1389 lines
36 KiB
C
1389 lines
36 KiB
C
/*
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* QEMU System Emulator
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*
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* Copyright (c) 2003-2008 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "net.h"
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#include "config-host.h"
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#include "net/tap.h"
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#include "net/socket.h"
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#include "net/dump.h"
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#include "net/slirp.h"
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#include "net/vde.h"
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#include "net/util.h"
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#include "monitor.h"
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#include "sysemu.h"
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#include "qemu-common.h"
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#include "qemu_socket.h"
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#include "hw/qdev.h"
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static QTAILQ_HEAD(, VLANState) vlans;
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static QTAILQ_HEAD(, VLANClientState) non_vlan_clients;
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int default_net = 1;
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/***********************************************************/
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/* network device redirectors */
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#if defined(DEBUG_NET)
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static void hex_dump(FILE *f, const uint8_t *buf, int size)
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{
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int len, i, j, c;
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for(i=0;i<size;i+=16) {
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len = size - i;
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if (len > 16)
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len = 16;
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fprintf(f, "%08x ", i);
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for(j=0;j<16;j++) {
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if (j < len)
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fprintf(f, " %02x", buf[i+j]);
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else
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fprintf(f, " ");
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}
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fprintf(f, " ");
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for(j=0;j<len;j++) {
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c = buf[i+j];
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if (c < ' ' || c > '~')
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c = '.';
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fprintf(f, "%c", c);
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}
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fprintf(f, "\n");
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}
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}
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#endif
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static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
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{
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const char *p, *p1;
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int len;
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p = *pp;
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p1 = strchr(p, sep);
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if (!p1)
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return -1;
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len = p1 - p;
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p1++;
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if (buf_size > 0) {
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if (len > buf_size - 1)
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len = buf_size - 1;
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memcpy(buf, p, len);
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buf[len] = '\0';
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}
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*pp = p1;
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return 0;
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}
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int parse_host_src_port(struct sockaddr_in *haddr,
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struct sockaddr_in *saddr,
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const char *input_str)
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{
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char *str = qemu_strdup(input_str);
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char *host_str = str;
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char *src_str;
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const char *src_str2;
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char *ptr;
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/*
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* Chop off any extra arguments at the end of the string which
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* would start with a comma, then fill in the src port information
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* if it was provided else use the "any address" and "any port".
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*/
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if ((ptr = strchr(str,',')))
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*ptr = '\0';
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if ((src_str = strchr(input_str,'@'))) {
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*src_str = '\0';
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src_str++;
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}
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if (parse_host_port(haddr, host_str) < 0)
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goto fail;
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src_str2 = src_str;
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if (!src_str || *src_str == '\0')
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src_str2 = ":0";
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if (parse_host_port(saddr, src_str2) < 0)
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goto fail;
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free(str);
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return(0);
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fail:
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free(str);
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return -1;
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}
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int parse_host_port(struct sockaddr_in *saddr, const char *str)
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{
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char buf[512];
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struct hostent *he;
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const char *p, *r;
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int port;
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p = str;
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if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
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return -1;
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saddr->sin_family = AF_INET;
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if (buf[0] == '\0') {
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saddr->sin_addr.s_addr = 0;
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} else {
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if (qemu_isdigit(buf[0])) {
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if (!inet_aton(buf, &saddr->sin_addr))
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return -1;
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} else {
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if ((he = gethostbyname(buf)) == NULL)
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return - 1;
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saddr->sin_addr = *(struct in_addr *)he->h_addr;
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}
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}
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port = strtol(p, (char **)&r, 0);
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if (r == p)
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return -1;
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saddr->sin_port = htons(port);
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return 0;
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}
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void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6])
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{
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snprintf(vc->info_str, sizeof(vc->info_str),
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"model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
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vc->model,
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macaddr[0], macaddr[1], macaddr[2],
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macaddr[3], macaddr[4], macaddr[5]);
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}
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void qemu_macaddr_default_if_unset(MACAddr *macaddr)
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{
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static int index = 0;
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static const MACAddr zero = { .a = { 0,0,0,0,0,0 } };
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if (memcmp(macaddr, &zero, sizeof(zero)) != 0)
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return;
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macaddr->a[0] = 0x52;
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macaddr->a[1] = 0x54;
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macaddr->a[2] = 0x00;
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macaddr->a[3] = 0x12;
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macaddr->a[4] = 0x34;
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macaddr->a[5] = 0x56 + index++;
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}
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static char *assign_name(VLANClientState *vc1, const char *model)
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{
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VLANState *vlan;
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char buf[256];
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int id = 0;
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QTAILQ_FOREACH(vlan, &vlans, next) {
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VLANClientState *vc;
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QTAILQ_FOREACH(vc, &vlan->clients, next) {
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if (vc != vc1 && strcmp(vc->model, model) == 0) {
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id++;
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}
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}
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}
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snprintf(buf, sizeof(buf), "%s.%d", model, id);
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return qemu_strdup(buf);
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}
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static ssize_t qemu_deliver_packet(VLANClientState *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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static ssize_t qemu_deliver_packet_iov(VLANClientState *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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VLANClientState *qemu_new_net_client(NetClientInfo *info,
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VLANState *vlan,
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VLANClientState *peer,
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const char *model,
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const char *name)
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{
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VLANClientState *vc;
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assert(info->size >= sizeof(VLANClientState));
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vc = qemu_mallocz(info->size);
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vc->info = info;
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vc->model = qemu_strdup(model);
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if (name) {
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vc->name = qemu_strdup(name);
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} else {
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vc->name = assign_name(vc, model);
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}
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if (vlan) {
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assert(!peer);
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vc->vlan = vlan;
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QTAILQ_INSERT_TAIL(&vc->vlan->clients, vc, next);
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} else {
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if (peer) {
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assert(!peer->peer);
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vc->peer = peer;
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peer->peer = vc;
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}
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QTAILQ_INSERT_TAIL(&non_vlan_clients, vc, next);
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vc->send_queue = qemu_new_net_queue(qemu_deliver_packet,
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qemu_deliver_packet_iov,
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vc);
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}
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return vc;
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}
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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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{
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VLANClientState *nc;
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NICState *nic;
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assert(info->type == NET_CLIENT_TYPE_NIC);
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assert(info->size >= sizeof(NICState));
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nc = qemu_new_net_client(info, conf->vlan, conf->peer, model, name);
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nic = DO_UPCAST(NICState, nc, nc);
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nic->conf = conf;
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nic->opaque = opaque;
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return nic;
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}
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void qemu_del_vlan_client(VLANClientState *vc)
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{
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if (vc->vlan) {
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QTAILQ_REMOVE(&vc->vlan->clients, vc, next);
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} else {
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if (vc->send_queue) {
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qemu_del_net_queue(vc->send_queue);
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}
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QTAILQ_REMOVE(&non_vlan_clients, vc, next);
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if (vc->peer) {
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vc->peer->peer = NULL;
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}
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}
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if (vc->info->cleanup) {
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vc->info->cleanup(vc);
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}
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qemu_free(vc->name);
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qemu_free(vc->model);
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qemu_free(vc);
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}
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VLANClientState *
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qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
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const char *client_str)
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{
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VLANState *vlan;
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VLANClientState *vc;
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vlan = qemu_find_vlan(vlan_id, 0);
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if (!vlan) {
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monitor_printf(mon, "unknown VLAN %d\n", vlan_id);
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return NULL;
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}
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QTAILQ_FOREACH(vc, &vlan->clients, next) {
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if (!strcmp(vc->name, client_str)) {
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break;
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}
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}
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if (!vc) {
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monitor_printf(mon, "can't find device %s on VLAN %d\n",
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client_str, vlan_id);
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}
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return vc;
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}
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void qemu_foreach_nic(qemu_nic_foreach func, void *opaque)
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{
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VLANClientState *nc;
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VLANState *vlan;
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QTAILQ_FOREACH(nc, &non_vlan_clients, next) {
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if (nc->info->type == NET_CLIENT_TYPE_NIC) {
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func(DO_UPCAST(NICState, nc, nc), opaque);
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}
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}
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QTAILQ_FOREACH(vlan, &vlans, next) {
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QTAILQ_FOREACH(nc, &vlan->clients, next) {
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if (nc->info->type == NET_CLIENT_TYPE_NIC) {
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func(DO_UPCAST(NICState, nc, nc), opaque);
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}
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}
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}
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}
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int qemu_can_send_packet(VLANClientState *sender)
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{
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VLANState *vlan = sender->vlan;
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VLANClientState *vc;
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if (sender->peer) {
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if (sender->peer->receive_disabled) {
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return 0;
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} else if (sender->peer->info->can_receive &&
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!sender->peer->info->can_receive(sender->peer)) {
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return 0;
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} else {
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return 1;
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}
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}
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if (!sender->vlan) {
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return 1;
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}
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QTAILQ_FOREACH(vc, &vlan->clients, next) {
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if (vc == sender) {
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continue;
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}
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/* no can_receive() handler, they can always receive */
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if (!vc->info->can_receive || vc->info->can_receive(vc)) {
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return 1;
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}
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}
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return 0;
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}
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static ssize_t qemu_deliver_packet(VLANClientState *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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{
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VLANClientState *vc = opaque;
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ssize_t ret;
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if (vc->link_down) {
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return size;
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}
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if (vc->receive_disabled) {
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return 0;
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}
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if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->info->receive_raw) {
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ret = vc->info->receive_raw(vc, data, size);
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} else {
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ret = vc->info->receive(vc, data, size);
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}
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if (ret == 0) {
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vc->receive_disabled = 1;
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};
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return ret;
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}
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static ssize_t qemu_vlan_deliver_packet(VLANClientState *sender,
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unsigned flags,
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const uint8_t *buf,
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size_t size,
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void *opaque)
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{
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VLANState *vlan = opaque;
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VLANClientState *vc;
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ssize_t ret = -1;
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QTAILQ_FOREACH(vc, &vlan->clients, next) {
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ssize_t len;
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if (vc == sender) {
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continue;
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}
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if (vc->link_down) {
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ret = size;
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continue;
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}
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|
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if (vc->receive_disabled) {
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ret = 0;
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continue;
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}
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if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->info->receive_raw) {
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len = vc->info->receive_raw(vc, buf, size);
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} else {
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len = vc->info->receive(vc, buf, size);
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}
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|
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if (len == 0) {
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vc->receive_disabled = 1;
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}
|
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|
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ret = (ret >= 0) ? ret : len;
|
|
|
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}
|
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|
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return ret;
|
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}
|
|
|
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void qemu_purge_queued_packets(VLANClientState *vc)
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{
|
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NetQueue *queue;
|
|
|
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if (!vc->peer && !vc->vlan) {
|
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return;
|
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}
|
|
|
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if (vc->peer) {
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queue = vc->peer->send_queue;
|
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} else {
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queue = vc->vlan->send_queue;
|
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}
|
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|
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qemu_net_queue_purge(queue, vc);
|
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}
|
|
|
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void qemu_flush_queued_packets(VLANClientState *vc)
|
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{
|
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NetQueue *queue;
|
|
|
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vc->receive_disabled = 0;
|
|
|
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if (vc->vlan) {
|
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queue = vc->vlan->send_queue;
|
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} else {
|
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queue = vc->send_queue;
|
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}
|
|
|
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qemu_net_queue_flush(queue);
|
|
}
|
|
|
|
static ssize_t qemu_send_packet_async_with_flags(VLANClientState *sender,
|
|
unsigned flags,
|
|
const uint8_t *buf, int size,
|
|
NetPacketSent *sent_cb)
|
|
{
|
|
NetQueue *queue;
|
|
|
|
#ifdef DEBUG_NET
|
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printf("qemu_send_packet_async:\n");
|
|
hex_dump(stdout, buf, size);
|
|
#endif
|
|
|
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if (sender->link_down || (!sender->peer && !sender->vlan)) {
|
|
return size;
|
|
}
|
|
|
|
if (sender->peer) {
|
|
queue = sender->peer->send_queue;
|
|
} else {
|
|
queue = sender->vlan->send_queue;
|
|
}
|
|
|
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return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb);
|
|
}
|
|
|
|
ssize_t qemu_send_packet_async(VLANClientState *sender,
|
|
const uint8_t *buf, int size,
|
|
NetPacketSent *sent_cb)
|
|
{
|
|
return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE,
|
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buf, size, sent_cb);
|
|
}
|
|
|
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void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size)
|
|
{
|
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qemu_send_packet_async(vc, buf, size, NULL);
|
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}
|
|
|
|
ssize_t qemu_send_packet_raw(VLANClientState *vc, const uint8_t *buf, int size)
|
|
{
|
|
return qemu_send_packet_async_with_flags(vc, QEMU_NET_PACKET_FLAG_RAW,
|
|
buf, size, NULL);
|
|
}
|
|
|
|
static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov,
|
|
int iovcnt)
|
|
{
|
|
uint8_t buffer[4096];
|
|
size_t offset = 0;
|
|
int i;
|
|
|
|
for (i = 0; i < iovcnt; i++) {
|
|
size_t len;
|
|
|
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len = MIN(sizeof(buffer) - offset, iov[i].iov_len);
|
|
memcpy(buffer + offset, iov[i].iov_base, len);
|
|
offset += len;
|
|
}
|
|
|
|
return vc->info->receive(vc, buffer, offset);
|
|
}
|
|
|
|
static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt)
|
|
{
|
|
size_t offset = 0;
|
|
int i;
|
|
|
|
for (i = 0; i < iovcnt; i++)
|
|
offset += iov[i].iov_len;
|
|
return offset;
|
|
}
|
|
|
|
static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
|
|
unsigned flags,
|
|
const struct iovec *iov,
|
|
int iovcnt,
|
|
void *opaque)
|
|
{
|
|
VLANClientState *vc = opaque;
|
|
|
|
if (vc->link_down) {
|
|
return calc_iov_length(iov, iovcnt);
|
|
}
|
|
|
|
if (vc->info->receive_iov) {
|
|
return vc->info->receive_iov(vc, iov, iovcnt);
|
|
} else {
|
|
return vc_sendv_compat(vc, iov, iovcnt);
|
|
}
|
|
}
|
|
|
|
static ssize_t qemu_vlan_deliver_packet_iov(VLANClientState *sender,
|
|
unsigned flags,
|
|
const struct iovec *iov,
|
|
int iovcnt,
|
|
void *opaque)
|
|
{
|
|
VLANState *vlan = opaque;
|
|
VLANClientState *vc;
|
|
ssize_t ret = -1;
|
|
|
|
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
|
ssize_t len;
|
|
|
|
if (vc == sender) {
|
|
continue;
|
|
}
|
|
|
|
if (vc->link_down) {
|
|
ret = calc_iov_length(iov, iovcnt);
|
|
continue;
|
|
}
|
|
|
|
assert(!(flags & QEMU_NET_PACKET_FLAG_RAW));
|
|
|
|
if (vc->info->receive_iov) {
|
|
len = vc->info->receive_iov(vc, iov, iovcnt);
|
|
} else {
|
|
len = vc_sendv_compat(vc, iov, iovcnt);
|
|
}
|
|
|
|
ret = (ret >= 0) ? ret : len;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
ssize_t qemu_sendv_packet_async(VLANClientState *sender,
|
|
const struct iovec *iov, int iovcnt,
|
|
NetPacketSent *sent_cb)
|
|
{
|
|
NetQueue *queue;
|
|
|
|
if (sender->link_down || (!sender->peer && !sender->vlan)) {
|
|
return calc_iov_length(iov, iovcnt);
|
|
}
|
|
|
|
if (sender->peer) {
|
|
queue = sender->peer->send_queue;
|
|
} else {
|
|
queue = sender->vlan->send_queue;
|
|
}
|
|
|
|
return qemu_net_queue_send_iov(queue, sender,
|
|
QEMU_NET_PACKET_FLAG_NONE,
|
|
iov, iovcnt, sent_cb);
|
|
}
|
|
|
|
ssize_t
|
|
qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt)
|
|
{
|
|
return qemu_sendv_packet_async(vc, iov, iovcnt, NULL);
|
|
}
|
|
|
|
/* find or alloc a new VLAN */
|
|
VLANState *qemu_find_vlan(int id, int allocate)
|
|
{
|
|
VLANState *vlan;
|
|
|
|
QTAILQ_FOREACH(vlan, &vlans, next) {
|
|
if (vlan->id == id) {
|
|
return vlan;
|
|
}
|
|
}
|
|
|
|
if (!allocate) {
|
|
return NULL;
|
|
}
|
|
|
|
vlan = qemu_mallocz(sizeof(VLANState));
|
|
vlan->id = id;
|
|
QTAILQ_INIT(&vlan->clients);
|
|
|
|
vlan->send_queue = qemu_new_net_queue(qemu_vlan_deliver_packet,
|
|
qemu_vlan_deliver_packet_iov,
|
|
vlan);
|
|
|
|
QTAILQ_INSERT_TAIL(&vlans, vlan, next);
|
|
|
|
return vlan;
|
|
}
|
|
|
|
VLANClientState *qemu_find_netdev(const char *id)
|
|
{
|
|
VLANClientState *vc;
|
|
|
|
QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
|
|
if (!strcmp(vc->name, id)) {
|
|
return vc;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static int nic_get_free_idx(void)
|
|
{
|
|
int index;
|
|
|
|
for (index = 0; index < MAX_NICS; index++)
|
|
if (!nd_table[index].used)
|
|
return index;
|
|
return -1;
|
|
}
|
|
|
|
int qemu_show_nic_models(const char *arg, const char *const *models)
|
|
{
|
|
int i;
|
|
|
|
if (!arg || strcmp(arg, "?"))
|
|
return 0;
|
|
|
|
fprintf(stderr, "qemu: Supported NIC models: ");
|
|
for (i = 0 ; models[i]; i++)
|
|
fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
|
|
return 1;
|
|
}
|
|
|
|
void qemu_check_nic_model(NICInfo *nd, const char *model)
|
|
{
|
|
const char *models[2];
|
|
|
|
models[0] = model;
|
|
models[1] = NULL;
|
|
|
|
if (qemu_show_nic_models(nd->model, models))
|
|
exit(0);
|
|
if (qemu_find_nic_model(nd, models, model) < 0)
|
|
exit(1);
|
|
}
|
|
|
|
int qemu_find_nic_model(NICInfo *nd, const char * const *models,
|
|
const char *default_model)
|
|
{
|
|
int i;
|
|
|
|
if (!nd->model)
|
|
nd->model = qemu_strdup(default_model);
|
|
|
|
for (i = 0 ; models[i]; i++) {
|
|
if (strcmp(nd->model, models[i]) == 0)
|
|
return i;
|
|
}
|
|
|
|
error_report("qemu: Unsupported NIC model: %s", nd->model);
|
|
return -1;
|
|
}
|
|
|
|
int net_handle_fd_param(Monitor *mon, const char *param)
|
|
{
|
|
if (!qemu_isdigit(param[0])) {
|
|
int fd;
|
|
|
|
fd = monitor_get_fd(mon, param);
|
|
if (fd == -1) {
|
|
error_report("No file descriptor named %s found", param);
|
|
return -1;
|
|
}
|
|
|
|
return fd;
|
|
} else {
|
|
return strtol(param, NULL, 0);
|
|
}
|
|
}
|
|
|
|
static int net_init_nic(QemuOpts *opts,
|
|
Monitor *mon,
|
|
const char *name,
|
|
VLANState *vlan)
|
|
{
|
|
int idx;
|
|
NICInfo *nd;
|
|
const char *netdev;
|
|
|
|
idx = nic_get_free_idx();
|
|
if (idx == -1 || nb_nics >= MAX_NICS) {
|
|
error_report("Too Many NICs");
|
|
return -1;
|
|
}
|
|
|
|
nd = &nd_table[idx];
|
|
|
|
memset(nd, 0, sizeof(*nd));
|
|
|
|
if ((netdev = qemu_opt_get(opts, "netdev"))) {
|
|
nd->netdev = qemu_find_netdev(netdev);
|
|
if (!nd->netdev) {
|
|
error_report("netdev '%s' not found", netdev);
|
|
return -1;
|
|
}
|
|
} else {
|
|
assert(vlan);
|
|
nd->vlan = vlan;
|
|
}
|
|
if (name) {
|
|
nd->name = qemu_strdup(name);
|
|
}
|
|
if (qemu_opt_get(opts, "model")) {
|
|
nd->model = qemu_strdup(qemu_opt_get(opts, "model"));
|
|
}
|
|
if (qemu_opt_get(opts, "addr")) {
|
|
nd->devaddr = qemu_strdup(qemu_opt_get(opts, "addr"));
|
|
}
|
|
|
|
nd->macaddr[0] = 0x52;
|
|
nd->macaddr[1] = 0x54;
|
|
nd->macaddr[2] = 0x00;
|
|
nd->macaddr[3] = 0x12;
|
|
nd->macaddr[4] = 0x34;
|
|
nd->macaddr[5] = 0x56 + idx;
|
|
|
|
if (qemu_opt_get(opts, "macaddr") &&
|
|
net_parse_macaddr(nd->macaddr, qemu_opt_get(opts, "macaddr")) < 0) {
|
|
error_report("invalid syntax for ethernet address");
|
|
return -1;
|
|
}
|
|
|
|
nd->nvectors = qemu_opt_get_number(opts, "vectors",
|
|
DEV_NVECTORS_UNSPECIFIED);
|
|
if (nd->nvectors != DEV_NVECTORS_UNSPECIFIED &&
|
|
(nd->nvectors < 0 || nd->nvectors > 0x7ffffff)) {
|
|
error_report("invalid # of vectors: %d", nd->nvectors);
|
|
return -1;
|
|
}
|
|
|
|
nd->used = 1;
|
|
nb_nics++;
|
|
|
|
return idx;
|
|
}
|
|
|
|
#define NET_COMMON_PARAMS_DESC \
|
|
{ \
|
|
.name = "type", \
|
|
.type = QEMU_OPT_STRING, \
|
|
.help = "net client type (nic, tap etc.)", \
|
|
}, { \
|
|
.name = "vlan", \
|
|
.type = QEMU_OPT_NUMBER, \
|
|
.help = "vlan number", \
|
|
}, { \
|
|
.name = "name", \
|
|
.type = QEMU_OPT_STRING, \
|
|
.help = "identifier for monitor commands", \
|
|
}
|
|
|
|
typedef int (*net_client_init_func)(QemuOpts *opts,
|
|
Monitor *mon,
|
|
const char *name,
|
|
VLANState *vlan);
|
|
|
|
/* magic number, but compiler will warn if too small */
|
|
#define NET_MAX_DESC 20
|
|
|
|
static const struct {
|
|
const char *type;
|
|
net_client_init_func init;
|
|
QemuOptDesc desc[NET_MAX_DESC];
|
|
} net_client_types[] = {
|
|
{
|
|
.type = "none",
|
|
.desc = {
|
|
NET_COMMON_PARAMS_DESC,
|
|
{ /* end of list */ }
|
|
},
|
|
}, {
|
|
.type = "nic",
|
|
.init = net_init_nic,
|
|
.desc = {
|
|
NET_COMMON_PARAMS_DESC,
|
|
{
|
|
.name = "netdev",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "id of -netdev to connect to",
|
|
},
|
|
{
|
|
.name = "macaddr",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "MAC address",
|
|
}, {
|
|
.name = "model",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "device model (e1000, rtl8139, virtio etc.)",
|
|
}, {
|
|
.name = "addr",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "PCI device address",
|
|
}, {
|
|
.name = "vectors",
|
|
.type = QEMU_OPT_NUMBER,
|
|
.help = "number of MSI-x vectors, 0 to disable MSI-X",
|
|
},
|
|
{ /* end of list */ }
|
|
},
|
|
#ifdef CONFIG_SLIRP
|
|
}, {
|
|
.type = "user",
|
|
.init = net_init_slirp,
|
|
.desc = {
|
|
NET_COMMON_PARAMS_DESC,
|
|
{
|
|
.name = "hostname",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "client hostname reported by the builtin DHCP server",
|
|
}, {
|
|
.name = "restrict",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "isolate the guest from the host (y|yes|n|no)",
|
|
}, {
|
|
.name = "ip",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "legacy parameter, use net= instead",
|
|
}, {
|
|
.name = "net",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "IP address and optional netmask",
|
|
}, {
|
|
.name = "host",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "guest-visible address of the host",
|
|
}, {
|
|
.name = "tftp",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "root directory of the built-in TFTP server",
|
|
}, {
|
|
.name = "bootfile",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "BOOTP filename, for use with tftp=",
|
|
}, {
|
|
.name = "dhcpstart",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "the first of the 16 IPs the built-in DHCP server can assign",
|
|
}, {
|
|
.name = "dns",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "guest-visible address of the virtual nameserver",
|
|
}, {
|
|
.name = "smb",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "root directory of the built-in SMB server",
|
|
}, {
|
|
.name = "smbserver",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "IP address of the built-in SMB server",
|
|
}, {
|
|
.name = "hostfwd",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "guest port number to forward incoming TCP or UDP connections",
|
|
}, {
|
|
.name = "guestfwd",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "IP address and port to forward guest TCP connections",
|
|
},
|
|
{ /* end of list */ }
|
|
},
|
|
#endif
|
|
}, {
|
|
.type = "tap",
|
|
.init = net_init_tap,
|
|
.desc = {
|
|
NET_COMMON_PARAMS_DESC,
|
|
{
|
|
.name = "ifname",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "interface name",
|
|
},
|
|
#ifndef _WIN32
|
|
{
|
|
.name = "fd",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "file descriptor of an already opened tap",
|
|
}, {
|
|
.name = "script",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "script to initialize the interface",
|
|
}, {
|
|
.name = "downscript",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "script to shut down the interface",
|
|
}, {
|
|
.name = "sndbuf",
|
|
.type = QEMU_OPT_SIZE,
|
|
.help = "send buffer limit"
|
|
}, {
|
|
.name = "vnet_hdr",
|
|
.type = QEMU_OPT_BOOL,
|
|
.help = "enable the IFF_VNET_HDR flag on the tap interface"
|
|
}, {
|
|
.name = "vhost",
|
|
.type = QEMU_OPT_BOOL,
|
|
.help = "enable vhost-net network accelerator",
|
|
}, {
|
|
.name = "vhostfd",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "file descriptor of an already opened vhost net device",
|
|
},
|
|
#endif /* _WIN32 */
|
|
{ /* end of list */ }
|
|
},
|
|
}, {
|
|
.type = "socket",
|
|
.init = net_init_socket,
|
|
.desc = {
|
|
NET_COMMON_PARAMS_DESC,
|
|
{
|
|
.name = "fd",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "file descriptor of an already opened socket",
|
|
}, {
|
|
.name = "listen",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "port number, and optional hostname, to listen on",
|
|
}, {
|
|
.name = "connect",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "port number, and optional hostname, to connect to",
|
|
}, {
|
|
.name = "mcast",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "UDP multicast address and port number",
|
|
},
|
|
{ /* end of list */ }
|
|
},
|
|
#ifdef CONFIG_VDE
|
|
}, {
|
|
.type = "vde",
|
|
.init = net_init_vde,
|
|
.desc = {
|
|
NET_COMMON_PARAMS_DESC,
|
|
{
|
|
.name = "sock",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "socket path",
|
|
}, {
|
|
.name = "port",
|
|
.type = QEMU_OPT_NUMBER,
|
|
.help = "port number",
|
|
}, {
|
|
.name = "group",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "group owner of socket",
|
|
}, {
|
|
.name = "mode",
|
|
.type = QEMU_OPT_NUMBER,
|
|
.help = "permissions for socket",
|
|
},
|
|
{ /* end of list */ }
|
|
},
|
|
#endif
|
|
}, {
|
|
.type = "dump",
|
|
.init = net_init_dump,
|
|
.desc = {
|
|
NET_COMMON_PARAMS_DESC,
|
|
{
|
|
.name = "len",
|
|
.type = QEMU_OPT_SIZE,
|
|
.help = "per-packet size limit (64k default)",
|
|
}, {
|
|
.name = "file",
|
|
.type = QEMU_OPT_STRING,
|
|
.help = "dump file path (default is qemu-vlan0.pcap)",
|
|
},
|
|
{ /* end of list */ }
|
|
},
|
|
},
|
|
{ /* end of list */ }
|
|
};
|
|
|
|
int net_client_init(Monitor *mon, QemuOpts *opts, int is_netdev)
|
|
{
|
|
const char *name;
|
|
const char *type;
|
|
int i;
|
|
|
|
type = qemu_opt_get(opts, "type");
|
|
if (!type) {
|
|
qerror_report(QERR_MISSING_PARAMETER, "type");
|
|
return -1;
|
|
}
|
|
|
|
if (is_netdev) {
|
|
if (strcmp(type, "tap") != 0 &&
|
|
#ifdef CONFIG_SLIRP
|
|
strcmp(type, "user") != 0 &&
|
|
#endif
|
|
#ifdef CONFIG_VDE
|
|
strcmp(type, "vde") != 0 &&
|
|
#endif
|
|
strcmp(type, "socket") != 0) {
|
|
qerror_report(QERR_INVALID_PARAMETER_VALUE, "type",
|
|
"a netdev backend type");
|
|
return -1;
|
|
}
|
|
|
|
if (qemu_opt_get(opts, "vlan")) {
|
|
qerror_report(QERR_INVALID_PARAMETER, "vlan");
|
|
return -1;
|
|
}
|
|
if (qemu_opt_get(opts, "name")) {
|
|
qerror_report(QERR_INVALID_PARAMETER, "name");
|
|
return -1;
|
|
}
|
|
if (!qemu_opts_id(opts)) {
|
|
qerror_report(QERR_MISSING_PARAMETER, "id");
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
name = qemu_opts_id(opts);
|
|
if (!name) {
|
|
name = qemu_opt_get(opts, "name");
|
|
}
|
|
|
|
for (i = 0; net_client_types[i].type != NULL; i++) {
|
|
if (!strcmp(net_client_types[i].type, type)) {
|
|
VLANState *vlan = NULL;
|
|
int ret;
|
|
|
|
if (qemu_opts_validate(opts, &net_client_types[i].desc[0]) == -1) {
|
|
return -1;
|
|
}
|
|
|
|
/* Do not add to a vlan if it's a -netdev or a nic with a
|
|
* netdev= parameter. */
|
|
if (!(is_netdev ||
|
|
(strcmp(type, "nic") == 0 && qemu_opt_get(opts, "netdev")))) {
|
|
vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1);
|
|
}
|
|
|
|
ret = -1;
|
|
if (net_client_types[i].init) {
|
|
ret = net_client_types[i].init(opts, mon, name, vlan);
|
|
if (ret < 0) {
|
|
/* TODO push error reporting into init() methods */
|
|
qerror_report(QERR_DEVICE_INIT_FAILED, type);
|
|
return -1;
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
qerror_report(QERR_INVALID_PARAMETER_VALUE, "type",
|
|
"a network client type");
|
|
return -1;
|
|
}
|
|
|
|
static int net_host_check_device(const char *device)
|
|
{
|
|
int i;
|
|
const char *valid_param_list[] = { "tap", "socket", "dump"
|
|
#ifdef CONFIG_SLIRP
|
|
,"user"
|
|
#endif
|
|
#ifdef CONFIG_VDE
|
|
,"vde"
|
|
#endif
|
|
};
|
|
for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
|
|
if (!strncmp(valid_param_list[i], device,
|
|
strlen(valid_param_list[i])))
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void net_host_device_add(Monitor *mon, const QDict *qdict)
|
|
{
|
|
const char *device = qdict_get_str(qdict, "device");
|
|
const char *opts_str = qdict_get_try_str(qdict, "opts");
|
|
QemuOpts *opts;
|
|
|
|
if (!net_host_check_device(device)) {
|
|
monitor_printf(mon, "invalid host network device %s\n", device);
|
|
return;
|
|
}
|
|
|
|
opts = qemu_opts_parse(&qemu_net_opts, opts_str ? opts_str : "", 0);
|
|
if (!opts) {
|
|
return;
|
|
}
|
|
|
|
qemu_opt_set(opts, "type", device);
|
|
|
|
if (net_client_init(mon, opts, 0) < 0) {
|
|
monitor_printf(mon, "adding host network device %s failed\n", device);
|
|
}
|
|
}
|
|
|
|
void net_host_device_remove(Monitor *mon, const QDict *qdict)
|
|
{
|
|
VLANClientState *vc;
|
|
int vlan_id = qdict_get_int(qdict, "vlan_id");
|
|
const char *device = qdict_get_str(qdict, "device");
|
|
|
|
vc = qemu_find_vlan_client_by_name(mon, vlan_id, device);
|
|
if (!vc) {
|
|
return;
|
|
}
|
|
if (!net_host_check_device(vc->model)) {
|
|
monitor_printf(mon, "invalid host network device %s\n", device);
|
|
return;
|
|
}
|
|
qemu_del_vlan_client(vc);
|
|
}
|
|
|
|
int do_netdev_add(Monitor *mon, const QDict *qdict, QObject **ret_data)
|
|
{
|
|
QemuOpts *opts;
|
|
int res;
|
|
|
|
opts = qemu_opts_from_qdict(&qemu_netdev_opts, qdict);
|
|
if (!opts) {
|
|
return -1;
|
|
}
|
|
|
|
res = net_client_init(mon, opts, 1);
|
|
return res;
|
|
}
|
|
|
|
int do_netdev_del(Monitor *mon, const QDict *qdict, QObject **ret_data)
|
|
{
|
|
const char *id = qdict_get_str(qdict, "id");
|
|
VLANClientState *vc;
|
|
|
|
vc = qemu_find_netdev(id);
|
|
if (!vc || vc->info->type == NET_CLIENT_TYPE_NIC) {
|
|
qerror_report(QERR_DEVICE_NOT_FOUND, id);
|
|
return -1;
|
|
}
|
|
if (vc->peer) {
|
|
qerror_report(QERR_DEVICE_IN_USE, id);
|
|
return -1;
|
|
}
|
|
qemu_del_vlan_client(vc);
|
|
qemu_opts_del(qemu_opts_find(&qemu_netdev_opts, id));
|
|
return 0;
|
|
}
|
|
|
|
void do_info_network(Monitor *mon)
|
|
{
|
|
VLANState *vlan;
|
|
VLANClientState *vc;
|
|
|
|
QTAILQ_FOREACH(vlan, &vlans, next) {
|
|
monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
|
|
|
|
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
|
monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
|
|
}
|
|
}
|
|
monitor_printf(mon, "Devices not on any VLAN:\n");
|
|
QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
|
|
monitor_printf(mon, " %s: %s", vc->name, vc->info_str);
|
|
if (vc->peer) {
|
|
monitor_printf(mon, " peer=%s", vc->peer->name);
|
|
}
|
|
monitor_printf(mon, "\n");
|
|
}
|
|
}
|
|
|
|
int do_set_link(Monitor *mon, const QDict *qdict, QObject **ret_data)
|
|
{
|
|
VLANState *vlan;
|
|
VLANClientState *vc = NULL;
|
|
const char *name = qdict_get_str(qdict, "name");
|
|
int up = qdict_get_bool(qdict, "up");
|
|
|
|
QTAILQ_FOREACH(vlan, &vlans, next) {
|
|
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
|
if (strcmp(vc->name, name) == 0) {
|
|
goto done;
|
|
}
|
|
}
|
|
}
|
|
vc = qemu_find_netdev(name);
|
|
done:
|
|
|
|
if (!vc) {
|
|
qerror_report(QERR_DEVICE_NOT_FOUND, name);
|
|
return -1;
|
|
}
|
|
|
|
vc->link_down = !up;
|
|
|
|
if (vc->info->link_status_changed) {
|
|
vc->info->link_status_changed(vc);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void net_cleanup(void)
|
|
{
|
|
VLANState *vlan;
|
|
VLANClientState *vc, *next_vc;
|
|
|
|
QTAILQ_FOREACH(vlan, &vlans, next) {
|
|
QTAILQ_FOREACH_SAFE(vc, &vlan->clients, next, next_vc) {
|
|
qemu_del_vlan_client(vc);
|
|
}
|
|
}
|
|
|
|
QTAILQ_FOREACH_SAFE(vc, &non_vlan_clients, next, next_vc) {
|
|
qemu_del_vlan_client(vc);
|
|
}
|
|
}
|
|
|
|
void net_check_clients(void)
|
|
{
|
|
VLANState *vlan;
|
|
VLANClientState *vc;
|
|
int has_nic = 0, has_host_dev = 0;
|
|
|
|
QTAILQ_FOREACH(vlan, &vlans, next) {
|
|
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
|
switch (vc->info->type) {
|
|
case NET_CLIENT_TYPE_NIC:
|
|
has_nic = 1;
|
|
break;
|
|
case NET_CLIENT_TYPE_SLIRP:
|
|
case NET_CLIENT_TYPE_TAP:
|
|
case NET_CLIENT_TYPE_SOCKET:
|
|
case NET_CLIENT_TYPE_VDE:
|
|
has_host_dev = 1;
|
|
break;
|
|
default: ;
|
|
}
|
|
}
|
|
if (has_host_dev && !has_nic)
|
|
fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
|
|
if (has_nic && !has_host_dev)
|
|
fprintf(stderr,
|
|
"Warning: vlan %d is not connected to host network\n",
|
|
vlan->id);
|
|
}
|
|
QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
|
|
if (!vc->peer) {
|
|
fprintf(stderr, "Warning: %s %s has no peer\n",
|
|
vc->info->type == NET_CLIENT_TYPE_NIC ? "nic" : "netdev",
|
|
vc->name);
|
|
}
|
|
}
|
|
}
|
|
|
|
static int net_init_client(QemuOpts *opts, void *dummy)
|
|
{
|
|
if (net_client_init(NULL, opts, 0) < 0)
|
|
return -1;
|
|
return 0;
|
|
}
|
|
|
|
static int net_init_netdev(QemuOpts *opts, void *dummy)
|
|
{
|
|
return net_client_init(NULL, opts, 1);
|
|
}
|
|
|
|
int net_init_clients(void)
|
|
{
|
|
if (default_net) {
|
|
/* if no clients, we use a default config */
|
|
qemu_opts_set(&qemu_net_opts, NULL, "type", "nic");
|
|
#ifdef CONFIG_SLIRP
|
|
qemu_opts_set(&qemu_net_opts, NULL, "type", "user");
|
|
#endif
|
|
}
|
|
|
|
QTAILQ_INIT(&vlans);
|
|
QTAILQ_INIT(&non_vlan_clients);
|
|
|
|
if (qemu_opts_foreach(&qemu_netdev_opts, net_init_netdev, NULL, 1) == -1)
|
|
return -1;
|
|
|
|
if (qemu_opts_foreach(&qemu_net_opts, net_init_client, NULL, 1) == -1) {
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int net_client_parse(QemuOptsList *opts_list, const char *optarg)
|
|
{
|
|
#if defined(CONFIG_SLIRP)
|
|
int ret;
|
|
if (net_slirp_parse_legacy(opts_list, optarg, &ret)) {
|
|
return ret;
|
|
}
|
|
#endif
|
|
|
|
if (!qemu_opts_parse(opts_list, optarg, 1)) {
|
|
return -1;
|
|
}
|
|
|
|
default_net = 0;
|
|
return 0;
|
|
}
|