1ceef9f273
This patch adds basic multiqueue support for qemu. The idea is simple, an array of NetClientStates were introduced in NICState, parse_netdev() were extended to find and match all NetClientStates belongs to the backend and place their pointers in NICConf. Then qemu_new_nic can setup a N:N mapping between NICStates that belongs to a nic and NICStates belongs to the netdev. And a queue_index were introduced in NetClientState to track its index. After this, each peers of a NICState were abstracted as a queue. After this change, all NetClientState that belongs to the same backend/nic has the same id. When use want to change the link status, all NetClientStates that belongs to the same backend/nic will be also changed. When user want to delete a device or netdev, all NetClientStates that belongs to the same backend/nic will be deleted also. Changing or deleting an specific queue is not allowed. Signed-off-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
194 lines
6.8 KiB
C
194 lines
6.8 KiB
C
#ifndef QEMU_NET_H
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#define QEMU_NET_H
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#include "qemu/queue.h"
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#include "qemu-common.h"
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#include "qapi/qmp/qdict.h"
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#include "qemu/option.h"
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#include "net/queue.h"
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#include "migration/vmstate.h"
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#include "qapi-types.h"
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#define MAX_QUEUE_NUM 1024
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struct MACAddr {
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uint8_t a[6];
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};
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/* qdev nic properties */
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typedef struct NICPeers {
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NetClientState *ncs[MAX_QUEUE_NUM];
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} NICPeers;
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typedef struct NICConf {
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MACAddr macaddr;
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NICPeers peers;
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int32_t bootindex;
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int32_t queues;
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} NICConf;
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#define DEFINE_NIC_PROPERTIES(_state, _conf) \
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DEFINE_PROP_MACADDR("mac", _state, _conf.macaddr), \
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DEFINE_PROP_VLAN("vlan", _state, _conf.peers), \
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DEFINE_PROP_NETDEV("netdev", _state, _conf.peers), \
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DEFINE_PROP_INT32("bootindex", _state, _conf.bootindex, -1)
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/* Net clients */
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typedef void (NetPoll)(NetClientState *, bool enable);
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typedef int (NetCanReceive)(NetClientState *);
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typedef ssize_t (NetReceive)(NetClientState *, const uint8_t *, size_t);
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typedef ssize_t (NetReceiveIOV)(NetClientState *, const struct iovec *, int);
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typedef void (NetCleanup) (NetClientState *);
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typedef void (LinkStatusChanged)(NetClientState *);
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typedef void (NetClientDestructor)(NetClientState *);
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typedef struct NetClientInfo {
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NetClientOptionsKind type;
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size_t size;
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NetReceive *receive;
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NetReceive *receive_raw;
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NetReceiveIOV *receive_iov;
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NetCanReceive *can_receive;
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NetCleanup *cleanup;
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LinkStatusChanged *link_status_changed;
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NetPoll *poll;
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} NetClientInfo;
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struct NetClientState {
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NetClientInfo *info;
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int link_down;
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QTAILQ_ENTRY(NetClientState) next;
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NetClientState *peer;
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NetQueue *send_queue;
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char *model;
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char *name;
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char info_str[256];
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unsigned receive_disabled : 1;
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NetClientDestructor *destructor;
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unsigned int queue_index;
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};
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typedef struct NICState {
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NetClientState ncs[MAX_QUEUE_NUM];
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NICConf *conf;
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void *opaque;
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bool peer_deleted;
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} NICState;
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NetClientState *qemu_find_netdev(const char *id);
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int qemu_find_net_clients_except(const char *id, NetClientState **ncs,
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NetClientOptionsKind type, int max);
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NetClientState *qemu_new_net_client(NetClientInfo *info,
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NetClientState *peer,
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const char *model,
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const char *name);
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NICState *qemu_new_nic(NetClientInfo *info,
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NICConf *conf,
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const char *model,
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const char *name,
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void *opaque);
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void qemu_del_nic(NICState *nic);
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NetClientState *qemu_get_subqueue(NICState *nic, int queue_index);
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NetClientState *qemu_get_queue(NICState *nic);
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NICState *qemu_get_nic(NetClientState *nc);
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void *qemu_get_nic_opaque(NetClientState *nc);
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void qemu_del_net_client(NetClientState *nc);
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NetClientState *qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
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const char *client_str);
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typedef void (*qemu_nic_foreach)(NICState *nic, void *opaque);
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void qemu_foreach_nic(qemu_nic_foreach func, void *opaque);
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int qemu_can_send_packet(NetClientState *nc);
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ssize_t qemu_sendv_packet(NetClientState *nc, const struct iovec *iov,
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int iovcnt);
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ssize_t qemu_sendv_packet_async(NetClientState *nc, const struct iovec *iov,
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int iovcnt, NetPacketSent *sent_cb);
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void qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size);
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ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size);
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ssize_t qemu_send_packet_async(NetClientState *nc, const uint8_t *buf,
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int size, NetPacketSent *sent_cb);
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void qemu_purge_queued_packets(NetClientState *nc);
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void qemu_flush_queued_packets(NetClientState *nc);
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void qemu_format_nic_info_str(NetClientState *nc, uint8_t macaddr[6]);
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void qemu_macaddr_default_if_unset(MACAddr *macaddr);
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int qemu_show_nic_models(const char *arg, const char *const *models);
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void qemu_check_nic_model(NICInfo *nd, const char *model);
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int qemu_find_nic_model(NICInfo *nd, const char * const *models,
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const char *default_model);
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ssize_t qemu_deliver_packet(NetClientState *sender,
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unsigned flags,
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const uint8_t *data,
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size_t size,
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void *opaque);
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ssize_t qemu_deliver_packet_iov(NetClientState *sender,
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unsigned flags,
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const struct iovec *iov,
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int iovcnt,
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void *opaque);
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void print_net_client(Monitor *mon, NetClientState *nc);
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void do_info_network(Monitor *mon, const QDict *qdict);
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/* NIC info */
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#define MAX_NICS 8
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struct NICInfo {
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MACAddr macaddr;
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char *model;
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char *name;
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char *devaddr;
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NetClientState *netdev;
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int used; /* is this slot in nd_table[] being used? */
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int instantiated; /* does this NICInfo correspond to an instantiated NIC? */
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int nvectors;
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};
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extern int nb_nics;
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extern NICInfo nd_table[MAX_NICS];
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extern int default_net;
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/* from net.c */
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extern const char *legacy_tftp_prefix;
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extern const char *legacy_bootp_filename;
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int net_client_init(QemuOpts *opts, int is_netdev, Error **errp);
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int net_client_parse(QemuOptsList *opts_list, const char *str);
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int net_init_clients(void);
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void net_check_clients(void);
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void net_cleanup(void);
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void net_host_device_add(Monitor *mon, const QDict *qdict);
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void net_host_device_remove(Monitor *mon, const QDict *qdict);
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void netdev_add(QemuOpts *opts, Error **errp);
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int qmp_netdev_add(Monitor *mon, const QDict *qdict, QObject **ret);
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int net_hub_id_for_client(NetClientState *nc, int *id);
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NetClientState *net_hub_port_find(int hub_id);
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#define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup"
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#define DEFAULT_NETWORK_DOWN_SCRIPT "/etc/qemu-ifdown"
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#define DEFAULT_BRIDGE_HELPER CONFIG_QEMU_HELPERDIR "/qemu-bridge-helper"
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#define DEFAULT_BRIDGE_INTERFACE "br0"
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void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd);
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#define POLYNOMIAL 0x04c11db6
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unsigned compute_mcast_idx(const uint8_t *ep);
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#define vmstate_offset_macaddr(_state, _field) \
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vmstate_offset_array(_state, _field.a, uint8_t, \
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sizeof(typeof_field(_state, _field)))
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#define VMSTATE_MACADDR(_field, _state) { \
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.name = (stringify(_field)), \
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.size = sizeof(MACAddr), \
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.info = &vmstate_info_buffer, \
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.flags = VMS_BUFFER, \
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.offset = vmstate_offset_macaddr(_state, _field), \
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}
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#endif
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