qemu-e2k/tests/vhost-user-bridge.c

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tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
/*
* Vhost User Bridge
*
* Copyright (c) 2015 Red Hat, Inc.
*
* Authors:
* Victor Kaplansky <victork@redhat.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or
* later. See the COPYING file in the top-level directory.
*/
/*
* TODO:
* - main should get parameters from the command line.
* - implement all request handlers. Still not implemented:
* vubr_get_queue_num_exec()
* vubr_send_rarp_exec()
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
* - test for broken requests and virtqueue.
* - implement features defined by Virtio 1.0 spec.
* - support mergeable buffers and indirect descriptors.
* - implement clean shutdown.
* - implement non-blocking writes to UDP backend.
* - implement polling strategy.
* - implement clean starting/stopping of vq processing
* - implement clean starting/stopping of used and buffers
* dirty page logging.
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
*/
#define _FILE_OFFSET_BITS 64
#include "qemu/osdep.h"
#include "qemu/atomic.h"
#include "qemu/ctype.h"
#include "qemu/iov.h"
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
#include "standard-headers/linux/virtio_net.h"
#include "libvhost-user.h"
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
#define VHOST_USER_BRIDGE_DEBUG 1
#define DPRINT(...) \
do { \
if (VHOST_USER_BRIDGE_DEBUG) { \
printf(__VA_ARGS__); \
} \
} while (0)
2019-06-26 09:48:13 +02:00
enum {
VHOST_USER_BRIDGE_MAX_QUEUES = 8,
};
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
typedef void (*CallbackFunc)(int sock, void *ctx);
typedef struct Event {
void *ctx;
CallbackFunc callback;
} Event;
typedef struct Dispatcher {
int max_sock;
fd_set fdset;
Event events[FD_SETSIZE];
} Dispatcher;
typedef struct VubrDev {
VuDev vudev;
Dispatcher dispatcher;
int backend_udp_sock;
struct sockaddr_in backend_udp_dest;
int hdrlen;
int sock;
int ready;
int quit;
struct {
int fd;
void *addr;
pthread_t thread;
} notifier;
} VubrDev;
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
static void
vubr_die(const char *s)
{
perror(s);
exit(1);
}
static int
dispatcher_init(Dispatcher *dispr)
{
FD_ZERO(&dispr->fdset);
dispr->max_sock = -1;
return 0;
}
static int
dispatcher_add(Dispatcher *dispr, int sock, void *ctx, CallbackFunc cb)
{
if (sock >= FD_SETSIZE) {
fprintf(stderr,
"Error: Failed to add new event. sock %d should be less than %d\n",
sock, FD_SETSIZE);
return -1;
}
dispr->events[sock].ctx = ctx;
dispr->events[sock].callback = cb;
FD_SET(sock, &dispr->fdset);
if (sock > dispr->max_sock) {
dispr->max_sock = sock;
}
DPRINT("Added sock %d for watching. max_sock: %d\n",
sock, dispr->max_sock);
return 0;
}
static int
dispatcher_remove(Dispatcher *dispr, int sock)
{
if (sock >= FD_SETSIZE) {
fprintf(stderr,
"Error: Failed to remove event. sock %d should be less than %d\n",
sock, FD_SETSIZE);
return -1;
}
FD_CLR(sock, &dispr->fdset);
DPRINT("Sock %d removed from dispatcher watch.\n", sock);
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
return 0;
}
/* timeout in us */
static int
dispatcher_wait(Dispatcher *dispr, uint32_t timeout)
{
struct timeval tv;
tv.tv_sec = timeout / 1000000;
tv.tv_usec = timeout % 1000000;
fd_set fdset = dispr->fdset;
/* wait until some of sockets become readable. */
int rc = select(dispr->max_sock + 1, &fdset, 0, 0, &tv);
if (rc == -1) {
vubr_die("select");
}
/* Timeout */
if (rc == 0) {
return 0;
}
/* Now call callback for every ready socket. */
int sock;
for (sock = 0; sock < dispr->max_sock + 1; sock++) {
/* The callback on a socket can remove other sockets from the
* dispatcher, thus we have to check that the socket is
* still not removed from dispatcher's list
*/
if (FD_ISSET(sock, &fdset) && FD_ISSET(sock, &dispr->fdset)) {
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
Event *e = &dispr->events[sock];
e->callback(sock, e->ctx);
}
}
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
return 0;
}
static void
vubr_handle_tx(VuDev *dev, int qidx)
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
{
VuVirtq *vq = vu_get_queue(dev, qidx);
VubrDev *vubr = container_of(dev, VubrDev, vudev);
int hdrlen = vubr->hdrlen;
VuVirtqElement *elem = NULL;
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
assert(qidx % 2);
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
for (;;) {
ssize_t ret;
unsigned int out_num;
struct iovec sg[VIRTQUEUE_MAX_SIZE], *out_sg;
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
elem = vu_queue_pop(dev, vq, sizeof(VuVirtqElement));
if (!elem) {
break;
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
}
out_num = elem->out_num;
out_sg = elem->out_sg;
if (out_num < 1) {
fprintf(stderr, "virtio-net header not in first element\n");
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
break;
}
if (VHOST_USER_BRIDGE_DEBUG) {
iov_hexdump(out_sg, out_num, stderr, "TX:", 1024);
}
if (hdrlen) {
unsigned sg_num = iov_copy(sg, ARRAY_SIZE(sg),
out_sg, out_num,
hdrlen, -1);
out_num = sg_num;
out_sg = sg;
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
}
struct msghdr msg = {
.msg_name = (struct sockaddr *) &vubr->backend_udp_dest,
.msg_namelen = sizeof(struct sockaddr_in),
.msg_iov = out_sg,
.msg_iovlen = out_num,
};
do {
ret = sendmsg(vubr->backend_udp_sock, &msg, 0);
} while (ret == -1 && (errno == EAGAIN || errno == EINTR));
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
if (ret == -1) {
vubr_die("sendmsg()");
}
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
vu_queue_push(dev, vq, elem, 0);
vu_queue_notify(dev, vq);
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
free(elem);
elem = NULL;
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
}
free(elem);
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
}
/* this function reverse the effect of iov_discard_front() it must be
* called with 'front' being the original struct iovec and 'bytes'
* being the number of bytes you shaved off
*/
static void
iov_restore_front(struct iovec *front, struct iovec *iov, size_t bytes)
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
{
struct iovec *cur;
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
for (cur = front; cur != iov; cur++) {
assert(bytes >= cur->iov_len);
bytes -= cur->iov_len;
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
}
cur->iov_base -= bytes;
cur->iov_len += bytes;
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
}
static void
iov_truncate(struct iovec *iov, unsigned iovc, size_t bytes)
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
{
unsigned i;
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
for (i = 0; i < iovc; i++, iov++) {
if (bytes < iov->iov_len) {
iov->iov_len = bytes;
return;
}
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
bytes -= iov->iov_len;
}
assert(!"couldn't truncate iov");
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
}
static void
vubr_backend_recv_cb(int sock, void *ctx)
{
VubrDev *vubr = (VubrDev *) ctx;
VuDev *dev = &vubr->vudev;
VuVirtq *vq = vu_get_queue(dev, 0);
VuVirtqElement *elem = NULL;
struct iovec mhdr_sg[VIRTQUEUE_MAX_SIZE];
struct virtio_net_hdr_mrg_rxbuf mhdr;
unsigned mhdr_cnt = 0;
int hdrlen = vubr->hdrlen;
int i = 0;
struct virtio_net_hdr hdr = {
.flags = 0,
.gso_type = VIRTIO_NET_HDR_GSO_NONE
};
DPRINT("\n\n *** IN UDP RECEIVE CALLBACK ***\n\n");
DPRINT(" hdrlen = %d\n", hdrlen);
if (!vu_queue_enabled(dev, vq) ||
!vu_queue_started(dev, vq) ||
!vu_queue_avail_bytes(dev, vq, hdrlen, 0)) {
DPRINT("Got UDP packet, but no available descriptors on RX virtq.\n");
return;
}
while (1) {
struct iovec *sg;
ssize_t ret, total = 0;
unsigned int num;
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
elem = vu_queue_pop(dev, vq, sizeof(VuVirtqElement));
if (!elem) {
break;
}
if (elem->in_num < 1) {
fprintf(stderr, "virtio-net contains no in buffers\n");
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
break;
}
sg = elem->in_sg;
num = elem->in_num;
if (i == 0) {
if (hdrlen == 12) {
mhdr_cnt = iov_copy(mhdr_sg, ARRAY_SIZE(mhdr_sg),
sg, elem->in_num,
offsetof(typeof(mhdr), num_buffers),
sizeof(mhdr.num_buffers));
}
iov_from_buf(sg, elem->in_num, 0, &hdr, sizeof hdr);
total += hdrlen;
ret = iov_discard_front(&sg, &num, hdrlen);
assert(ret == hdrlen);
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
}
struct msghdr msg = {
.msg_name = (struct sockaddr *) &vubr->backend_udp_dest,
.msg_namelen = sizeof(struct sockaddr_in),
.msg_iov = sg,
vhost-user-bridge: fix recvmsg iovlen After iov_discard_front(), the iov may be smaller than its initial size. Fixes the heap-buffer-overflow spotted by ASAN: ==9036==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x6060000001e0 at pc 0x7fe632eca3f0 bp 0x7ffddc4a05a0 sp 0x7ffddc49fd48 WRITE of size 32 at 0x6060000001e0 thread T0 #0 0x7fe632eca3ef (/lib64/libasan.so.5+0x773ef) #1 0x7fe632ecad23 in __interceptor_recvmsg (/lib64/libasan.so.5+0x77d23) #2 0x561e7491936b in vubr_backend_recv_cb /home/elmarco/src/qemu/tests/vhost-user-bridge.c:333 #3 0x561e74917711 in dispatcher_wait /home/elmarco/src/qemu/tests/vhost-user-bridge.c:160 #4 0x561e7491c3b5 in vubr_run /home/elmarco/src/qemu/tests/vhost-user-bridge.c:725 #5 0x561e7491c85c in main /home/elmarco/src/qemu/tests/vhost-user-bridge.c:806 #6 0x7fe631a6c412 in __libc_start_main (/lib64/libc.so.6+0x24412) #7 0x561e7491667d in _start (/home/elmarco/src/qemu/build/tests/vhost-user-bridge+0x3967d) 0x6060000001e0 is located 0 bytes to the right of 64-byte region [0x6060000001a0,0x6060000001e0) allocated by thread T0 here: #0 0x7fe632f42848 in __interceptor_malloc (/lib64/libasan.so.5+0xef848) #1 0x561e7493acd8 in virtqueue_alloc_element /home/elmarco/src/qemu/contrib/libvhost-user/libvhost-user.c:1848 #2 0x561e7493c2a8 in vu_queue_pop /home/elmarco/src/qemu/contrib/libvhost-user/libvhost-user.c:1954 #3 0x561e749189bf in vubr_backend_recv_cb /home/elmarco/src/qemu/tests/vhost-user-bridge.c:297 #4 0x561e74917711 in dispatcher_wait /home/elmarco/src/qemu/tests/vhost-user-bridge.c:160 #5 0x561e7491c3b5 in vubr_run /home/elmarco/src/qemu/tests/vhost-user-bridge.c:725 #6 0x561e7491c85c in main /home/elmarco/src/qemu/tests/vhost-user-bridge.c:806 #7 0x7fe631a6c412 in __libc_start_main (/lib64/libc.so.6+0x24412) SUMMARY: AddressSanitizer: heap-buffer-overflow (/lib64/libasan.so.5+0x773ef) Shadow bytes around the buggy address: 0x0c0c7fff7fe0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x0c0c7fff7ff0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x0c0c7fff8000: fa fa fa fa 00 00 00 00 00 00 05 fa fa fa fa fa 0x0c0c7fff8010: 00 00 00 00 00 00 00 00 fa fa fa fa fd fd fd fd 0x0c0c7fff8020: fd fd fd fd fa fa fa fa fd fd fd fd fd fd fd fd =>0x0c0c7fff8030: fa fa fa fa 00 00 00 00 00 00 00 00[fa]fa fa fa 0x0c0c7fff8040: fd fd fd fd fd fd fd fd fa fa fa fa fd fd fd fd 0x0c0c7fff8050: fd fd fd fd fa fa fa fa fd fd fd fd fd fd fd fd 0x0c0c7fff8060: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c0c7fff8070: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c0c7fff8080: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20181109173028.3372-1-marcandre.lureau@redhat.com> Signed-off-by: Paolo BOnzini <pbonzini@redhat.com>
2018-11-09 18:30:28 +01:00
.msg_iovlen = num,
.msg_flags = MSG_DONTWAIT,
};
ret = RETRY_ON_EINTR(recvmsg(vubr->backend_udp_sock, &msg, 0));
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
if (i == 0) {
iov_restore_front(elem->in_sg, sg, hdrlen);
}
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
if (ret == -1) {
if (errno == EWOULDBLOCK) {
vu_queue_rewind(dev, vq, 1);
break;
}
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
vubr_die("recvmsg()");
}
total += ret;
iov_truncate(elem->in_sg, elem->in_num, total);
vu_queue_fill(dev, vq, elem, total, i++);
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
free(elem);
elem = NULL;
break; /* could loop if DONTWAIT worked? */
}
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
if (mhdr_cnt) {
mhdr.num_buffers = i;
iov_from_buf(mhdr_sg, mhdr_cnt,
0,
&mhdr.num_buffers, sizeof mhdr.num_buffers);
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
}
vu_queue_flush(dev, vq, i);
vu_queue_notify(dev, vq);
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
free(elem);
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
}
static void
vubr_receive_cb(int sock, void *ctx)
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
{
VubrDev *vubr = (VubrDev *)ctx;
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
if (!vu_dispatch(&vubr->vudev)) {
fprintf(stderr, "Error while dispatching\n");
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
}
}
typedef struct WatchData {
VuDev *dev;
vu_watch_cb cb;
void *data;
} WatchData;
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
static void
watch_cb(int sock, void *ctx)
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
{
struct WatchData *wd = ctx;
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
wd->cb(wd->dev, VU_WATCH_IN, wd->data);
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
}
static void
vubr_set_watch(VuDev *dev, int fd, int condition,
vu_watch_cb cb, void *data)
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
{
VubrDev *vubr = container_of(dev, VubrDev, vudev);
static WatchData watches[FD_SETSIZE];
struct WatchData *wd = &watches[fd];
wd->cb = cb;
wd->data = data;
wd->dev = dev;
dispatcher_add(&vubr->dispatcher, fd, wd, watch_cb);
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
}
static void
vubr_remove_watch(VuDev *dev, int fd)
{
VubrDev *vubr = container_of(dev, VubrDev, vudev);
dispatcher_remove(&vubr->dispatcher, fd);
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
}
static int
vubr_send_rarp_exec(VuDev *dev, VhostUserMsg *vmsg)
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
{
DPRINT("Function %s() not implemented yet.\n", __func__);
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
return 0;
}
static int
vubr_process_msg(VuDev *dev, VhostUserMsg *vmsg, int *do_reply)
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
{
switch (vmsg->request) {
case VHOST_USER_SEND_RARP:
*do_reply = vubr_send_rarp_exec(dev, vmsg);
return 1;
default:
/* let the library handle the rest */
return 0;
}
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
return 0;
}
static void
vubr_set_features(VuDev *dev, uint64_t features)
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
{
VubrDev *vubr = container_of(dev, VubrDev, vudev);
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
if ((features & (1ULL << VIRTIO_F_VERSION_1)) ||
(features & (1ULL << VIRTIO_NET_F_MRG_RXBUF))) {
vubr->hdrlen = 12;
} else {
vubr->hdrlen = 10;
}
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
}
static uint64_t
vubr_get_features(VuDev *dev)
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
{
return 1ULL << VIRTIO_NET_F_GUEST_ANNOUNCE |
1ULL << VIRTIO_NET_F_MRG_RXBUF |
1ULL << VIRTIO_F_VERSION_1;
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
}
static void
vubr_queue_set_started(VuDev *dev, int qidx, bool started)
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
{
VubrDev *vubr = container_of(dev, VubrDev, vudev);
VuVirtq *vq = vu_get_queue(dev, qidx);
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
if (started && vubr->notifier.fd >= 0) {
vu_set_queue_host_notifier(dev, vq, vubr->notifier.fd,
qemu_real_host_page_size(),
qidx * qemu_real_host_page_size());
}
if (qidx % 2 == 1) {
vu_set_queue_handler(dev, vq, started ? vubr_handle_tx : NULL);
}
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
}
static void
vubr_panic(VuDev *dev, const char *msg)
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
{
VubrDev *vubr = container_of(dev, VubrDev, vudev);
fprintf(stderr, "PANIC: %s\n", msg);
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
dispatcher_remove(&vubr->dispatcher, dev->sock);
vubr->quit = 1;
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
}
static bool
vubr_queue_is_processed_in_order(VuDev *dev, int qidx)
{
return true;
}
static const VuDevIface vuiface = {
.get_features = vubr_get_features,
.set_features = vubr_set_features,
.process_msg = vubr_process_msg,
.queue_set_started = vubr_queue_set_started,
.queue_is_processed_in_order = vubr_queue_is_processed_in_order,
};
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
static void
vubr_accept_cb(int sock, void *ctx)
{
VubrDev *dev = (VubrDev *)ctx;
int conn_fd;
struct sockaddr_un un;
socklen_t len = sizeof(un);
conn_fd = accept(sock, (struct sockaddr *) &un, &len);
if (conn_fd == -1) {
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
vubr_die("accept()");
}
DPRINT("Got connection from remote peer on sock %d\n", conn_fd);
2019-06-26 09:48:13 +02:00
if (!vu_init(&dev->vudev,
VHOST_USER_BRIDGE_MAX_QUEUES,
conn_fd,
vubr_panic,
NULL,
2019-06-26 09:48:13 +02:00
vubr_set_watch,
vubr_remove_watch,
&vuiface)) {
fprintf(stderr, "Failed to initialize libvhost-user\n");
exit(1);
}
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
dispatcher_add(&dev->dispatcher, conn_fd, ctx, vubr_receive_cb);
dispatcher_remove(&dev->dispatcher, sock);
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
}
static VubrDev *
vubr_new(const char *path, bool client)
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
{
VubrDev *dev = (VubrDev *) calloc(1, sizeof(VubrDev));
struct sockaddr_un un;
CallbackFunc cb;
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
size_t len;
if (strlen(path) >= sizeof(un.sun_path)) {
fprintf(stderr, "unix domain socket path '%s' is too long\n", path);
exit(1);
}
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
/* Get a UNIX socket. */
dev->sock = socket(AF_UNIX, SOCK_STREAM, 0);
if (dev->sock == -1) {
vubr_die("socket");
}
dev->notifier.fd = -1;
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
un.sun_family = AF_UNIX;
strcpy(un.sun_path, path);
len = sizeof(un.sun_family) + strlen(path);
if (!client) {
unlink(path);
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
if (bind(dev->sock, (struct sockaddr *) &un, len) == -1) {
vubr_die("bind");
}
if (listen(dev->sock, 1) == -1) {
vubr_die("listen");
}
cb = vubr_accept_cb;
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
DPRINT("Waiting for connections on UNIX socket %s ...\n", path);
} else {
if (connect(dev->sock, (struct sockaddr *)&un, len) == -1) {
vubr_die("connect");
}
2019-06-26 09:48:13 +02:00
if (!vu_init(&dev->vudev,
VHOST_USER_BRIDGE_MAX_QUEUES,
dev->sock,
vubr_panic,
NULL,
2019-06-26 09:48:13 +02:00
vubr_set_watch,
vubr_remove_watch,
&vuiface)) {
fprintf(stderr, "Failed to initialize libvhost-user\n");
exit(1);
}
cb = vubr_receive_cb;
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
}
dispatcher_init(&dev->dispatcher);
dispatcher_add(&dev->dispatcher, dev->sock, (void *)dev, cb);
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
return dev;
}
static void *notifier_thread(void *arg)
{
VuDev *dev = (VuDev *)arg;
VubrDev *vubr = container_of(dev, VubrDev, vudev);
int pagesize = qemu_real_host_page_size();
int qidx;
while (true) {
2019-06-26 09:48:13 +02:00
for (qidx = 0; qidx < VHOST_USER_BRIDGE_MAX_QUEUES; qidx++) {
uint16_t *n = vubr->notifier.addr + pagesize * qidx;
if (*n == qidx) {
*n = 0xffff;
/* We won't miss notifications if we reset
* the memory first. */
smp_mb();
DPRINT("Got a notification for queue%d via host notifier.\n",
qidx);
if (qidx % 2 == 1) {
vubr_handle_tx(dev, qidx);
}
}
usleep(1000);
}
}
return NULL;
}
static void
vubr_host_notifier_setup(VubrDev *dev)
{
pthread_t thread;
size_t length;
void *addr;
int fd;
length = qemu_real_host_page_size() * VHOST_USER_BRIDGE_MAX_QUEUES;
fd = g_file_open_tmp("vubr-XXXXXX", NULL, NULL);
if (fd < 0) {
vubr_die("mkstemp()");
}
if (posix_fallocate(fd, 0, length) != 0) {
vubr_die("posix_fallocate()");
}
addr = mmap(NULL, length, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
if (addr == MAP_FAILED) {
vubr_die("mmap()");
}
memset(addr, 0xff, length);
if (pthread_create(&thread, NULL, notifier_thread, &dev->vudev) != 0) {
vubr_die("pthread_create()");
}
dev->notifier.fd = fd;
dev->notifier.addr = addr;
dev->notifier.thread = thread;
}
static void
vubr_set_host(struct sockaddr_in *saddr, const char *host)
{
if (qemu_isdigit(host[0])) {
if (!inet_aton(host, &saddr->sin_addr)) {
fprintf(stderr, "inet_aton() failed.\n");
exit(1);
}
} else {
struct hostent *he = gethostbyname(host);
if (!he) {
fprintf(stderr, "gethostbyname() failed.\n");
exit(1);
}
saddr->sin_addr = *(struct in_addr *)he->h_addr;
}
}
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
static void
vubr_backend_udp_setup(VubrDev *dev,
const char *local_host,
const char *local_port,
const char *remote_host,
const char *remote_port)
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
{
int sock;
const char *r;
int lport, rport;
lport = strtol(local_port, (char **)&r, 0);
if (r == local_port) {
fprintf(stderr, "lport parsing failed.\n");
exit(1);
}
rport = strtol(remote_port, (char **)&r, 0);
if (r == remote_port) {
fprintf(stderr, "rport parsing failed.\n");
exit(1);
}
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
struct sockaddr_in si_local = {
.sin_family = AF_INET,
.sin_port = htons(lport),
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
};
vubr_set_host(&si_local, local_host);
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
/* setup destination for sends */
dev->backend_udp_dest = (struct sockaddr_in) {
.sin_family = AF_INET,
.sin_port = htons(rport),
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
};
vubr_set_host(&dev->backend_udp_dest, remote_host);
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if (sock == -1) {
vubr_die("socket");
}
if (bind(sock, (struct sockaddr *)&si_local, sizeof(si_local)) == -1) {
vubr_die("bind");
}
dev->backend_udp_sock = sock;
dispatcher_add(&dev->dispatcher, sock, dev, vubr_backend_recv_cb);
DPRINT("Waiting for data from udp backend on %s:%d...\n",
local_host, lport);
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
}
static void
vubr_run(VubrDev *dev)
{
while (!dev->quit) {
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
/* timeout 200ms */
dispatcher_wait(&dev->dispatcher, 200000);
/* Here one can try polling strategy. */
}
}
static int
vubr_parse_host_port(const char **host, const char **port, const char *buf)
{
char *p = strchr(buf, ':');
if (!p) {
return -1;
}
*p = '\0';
*host = strdup(buf);
*port = strdup(p + 1);
return 0;
}
#define DEFAULT_UD_SOCKET "/tmp/vubr.sock"
#define DEFAULT_LHOST "127.0.0.1"
#define DEFAULT_LPORT "4444"
#define DEFAULT_RHOST "127.0.0.1"
#define DEFAULT_RPORT "5555"
static const char *ud_socket_path = DEFAULT_UD_SOCKET;
static const char *lhost = DEFAULT_LHOST;
static const char *lport = DEFAULT_LPORT;
static const char *rhost = DEFAULT_RHOST;
static const char *rport = DEFAULT_RPORT;
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
int
main(int argc, char *argv[])
{
VubrDev *dev;
int opt;
bool client = false;
bool host_notifier = false;
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
while ((opt = getopt(argc, argv, "l:r:u:cH")) != -1) {
switch (opt) {
case 'l':
if (vubr_parse_host_port(&lhost, &lport, optarg) < 0) {
goto out;
}
break;
case 'r':
if (vubr_parse_host_port(&rhost, &rport, optarg) < 0) {
goto out;
}
break;
case 'u':
ud_socket_path = strdup(optarg);
break;
case 'c':
client = true;
break;
case 'H':
host_notifier = true;
break;
default:
goto out;
}
}
DPRINT("ud socket: %s (%s)\n", ud_socket_path,
client ? "client" : "server");
DPRINT("local: %s:%s\n", lhost, lport);
DPRINT("remote: %s:%s\n", rhost, rport);
dev = vubr_new(ud_socket_path, client);
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
if (!dev) {
return 1;
}
if (host_notifier) {
vubr_host_notifier_setup(dev);
}
vubr_backend_udp_setup(dev, lhost, lport, rhost, rport);
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
vubr_run(dev);
vu_deinit(&dev->vudev);
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
return 0;
out:
fprintf(stderr, "Usage: %s ", argv[0]);
fprintf(stderr, "[-c] [-H] [-u ud_socket_path] [-l lhost:lport] [-r rhost:rport]\n");
fprintf(stderr, "\t-u path to unix domain socket. default: %s\n",
DEFAULT_UD_SOCKET);
fprintf(stderr, "\t-l local host and port. default: %s:%s\n",
DEFAULT_LHOST, DEFAULT_LPORT);
fprintf(stderr, "\t-r remote host and port. default: %s:%s\n",
DEFAULT_RHOST, DEFAULT_RPORT);
fprintf(stderr, "\t-c client mode\n");
fprintf(stderr, "\t-H use host notifier\n");
return 1;
tests/vhost-user-bridge: add vhost-user bridge application The test existing in QEMU for vhost-user feature is good for testing the management protocol, but does not allow actual traffic. This patch proposes Vhost-User Bridge application, which can serve the QEMU community as a comprehensive test by running real internet traffic by means of vhost-user interface. Essentially the Vhost-User Bridge is a very basic vhost-user backend for QEMU. It runs as a standalone user-level process. For packet processing Vhost-User Bridge uses an additional QEMU instance with a backend configured by "-net socket" as a shared VLAN. This way another QEMU virtual machine can effectively serve as a shared bus by means of UDP communication. For a more simple setup, the another QEMU instance running the SLiRP backend can be the same QEMU instance running vhost-user client. This Vhost-User Bridge implementation is very preliminary. It is missing many features. I has been studying vhost-user protocol internals, so I've written vhost-user-bridge bit by bit as I progressed through the protocol. Most probably its internal architecture will change significantly. To run Vhost-User Bridge application: 1. Build vhost-user-bridge with a regular procedure. This will create a vhost-user-bridge executable under tests directory: $ configure; make tests/vhost-user-bridge 2. Ensure the machine has hugepages enabled in kernel with command line like: default_hugepagesz=2M hugepagesz=2M hugepages=2048 3. Run Vhost-User Bridge with: $ tests/vhost-user-bridge The above will run vhost-user server listening for connections on UNIX domain socket /tmp/vubr.sock, and will try to connect by UDP to VLAN bridge to localhost:5555, while listening on localhost:4444 Run qemu with a virtio-net backed by vhost-user: $ qemu \ -enable-kvm -m 512 -smp 2 \ -object memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on \ -numa node,memdev=mem -mem-prealloc \ -chardev socket,id=char0,path=/tmp/vubr.sock \ -netdev type=vhost-user,id=mynet1,chardev=char0,vhostforce \ -device virtio-net-pci,netdev=mynet1 \ -net none \ -net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \ -net user,vlan=0 \ disk.img vhost-user-bridge was tested very lightly: it's able to bringup a linux on client VM with the virtio-net driver, and execute transmits and receives to the internet. I tested with "wget redhat.com", "dig redhat.com". PS. I've consulted DPDK's code for vhost-user during Vhost-User Bridge implementation. Signed-off-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2015-10-28 13:53:07 +01:00
}