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aliguori63a01ef2008-10-31 19:10:00 +00001/*
2 * QEMU System Emulator
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
blueswir1d40cdb12009-03-07 16:52:02 +000024#include "config-host.h"
25
Paolo Bonzinia245fc12012-09-17 18:43:51 +020026#include "net.h"
27#include "net/clients.h"
Stefan Hajnoczif6c874e2012-07-24 16:35:04 +010028#include "net/hub.h"
Paolo Bonzinia245fc12012-09-17 18:43:51 +020029#include "net/slirp.h"
Mark McLoughlinf1d078c2009-11-25 18:49:27 +000030#include "net/util.h"
Paolo Bonzinia245fc12012-09-17 18:43:51 +020031
blueswir1511d2b12009-03-07 15:32:56 +000032#include "monitor.h"
Mark McLoughlin1df49e02009-11-25 18:48:58 +000033#include "qemu-common.h"
blueswir1511d2b12009-03-07 15:32:56 +000034#include "qemu_socket.h"
Luiz Capitulino4b371562011-11-23 13:11:55 -020035#include "qmp-commands.h"
Amit Shah75422b02010-02-25 17:24:43 +053036#include "hw/qdev.h"
Benjamin Poirierce053662011-02-23 19:57:21 -050037#include "iov.h"
Laszlo Ersek6687b792012-07-17 16:17:13 +020038#include "qapi-visit.h"
39#include "qapi/opts-visitor.h"
40#include "qapi/qapi-dealloc-visitor.h"
blueswir1511d2b12009-03-07 15:32:56 +000041
Stefan Weil2944e4e2012-02-04 09:24:46 +010042/* Net bridge is currently not supported for W32. */
43#if !defined(_WIN32)
44# define CONFIG_NET_BRIDGE
45#endif
46
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +010047static QTAILQ_HEAD(, NetClientState) net_clients;
aliguori63a01ef2008-10-31 19:10:00 +000048
Gerd Hoffmanncb4522c2009-12-08 13:11:47 +010049int default_net = 1;
50
aliguori63a01ef2008-10-31 19:10:00 +000051/***********************************************************/
52/* network device redirectors */
53
Mark McLoughlin68ac40d2009-11-25 18:48:54 +000054#if defined(DEBUG_NET)
aliguori63a01ef2008-10-31 19:10:00 +000055static void hex_dump(FILE *f, const uint8_t *buf, int size)
56{
57 int len, i, j, c;
58
59 for(i=0;i<size;i+=16) {
60 len = size - i;
61 if (len > 16)
62 len = 16;
63 fprintf(f, "%08x ", i);
64 for(j=0;j<16;j++) {
65 if (j < len)
66 fprintf(f, " %02x", buf[i+j]);
67 else
68 fprintf(f, " ");
69 }
70 fprintf(f, " ");
71 for(j=0;j<len;j++) {
72 c = buf[i+j];
73 if (c < ' ' || c > '~')
74 c = '.';
75 fprintf(f, "%c", c);
76 }
77 fprintf(f, "\n");
78 }
79}
80#endif
81
aliguori63a01ef2008-10-31 19:10:00 +000082static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
83{
84 const char *p, *p1;
85 int len;
86 p = *pp;
87 p1 = strchr(p, sep);
88 if (!p1)
89 return -1;
90 len = p1 - p;
91 p1++;
92 if (buf_size > 0) {
93 if (len > buf_size - 1)
94 len = buf_size - 1;
95 memcpy(buf, p, len);
96 buf[len] = '\0';
97 }
98 *pp = p1;
99 return 0;
100}
101
aliguori63a01ef2008-10-31 19:10:00 +0000102int parse_host_port(struct sockaddr_in *saddr, const char *str)
103{
104 char buf[512];
105 struct hostent *he;
106 const char *p, *r;
107 int port;
108
109 p = str;
110 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
111 return -1;
112 saddr->sin_family = AF_INET;
113 if (buf[0] == '\0') {
114 saddr->sin_addr.s_addr = 0;
115 } else {
blueswir1cd390082008-11-16 13:53:32 +0000116 if (qemu_isdigit(buf[0])) {
aliguori63a01ef2008-10-31 19:10:00 +0000117 if (!inet_aton(buf, &saddr->sin_addr))
118 return -1;
119 } else {
120 if ((he = gethostbyname(buf)) == NULL)
121 return - 1;
122 saddr->sin_addr = *(struct in_addr *)he->h_addr;
123 }
124 }
125 port = strtol(p, (char **)&r, 0);
126 if (r == p)
127 return -1;
128 saddr->sin_port = htons(port);
129 return 0;
130}
131
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100132void qemu_format_nic_info_str(NetClientState *nc, uint8_t macaddr[6])
aliguori7cb7434b2009-01-07 17:46:21 +0000133{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100134 snprintf(nc->info_str, sizeof(nc->info_str),
aliguori4dda4062009-01-08 19:01:37 +0000135 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100136 nc->model,
aliguori7cb7434b2009-01-07 17:46:21 +0000137 macaddr[0], macaddr[1], macaddr[2],
138 macaddr[3], macaddr[4], macaddr[5]);
139}
140
Gerd Hoffmann76d32cb2009-10-21 15:25:22 +0200141void qemu_macaddr_default_if_unset(MACAddr *macaddr)
142{
143 static int index = 0;
144 static const MACAddr zero = { .a = { 0,0,0,0,0,0 } };
145
146 if (memcmp(macaddr, &zero, sizeof(zero)) != 0)
147 return;
148 macaddr->a[0] = 0x52;
149 macaddr->a[1] = 0x54;
150 macaddr->a[2] = 0x00;
151 macaddr->a[3] = 0x12;
152 macaddr->a[4] = 0x34;
153 macaddr->a[5] = 0x56 + index++;
154}
155
Stefan Hajnoczid33d93b2012-07-24 16:35:05 +0100156/**
157 * Generate a name for net client
158 *
159 * Only net clients created with the legacy -net option need this. Naming is
160 * mandatory for net clients created with -netdev.
161 */
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100162static char *assign_name(NetClientState *nc1, const char *model)
aliguori676cff22009-01-07 17:43:44 +0000163{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100164 NetClientState *nc;
aliguori676cff22009-01-07 17:43:44 +0000165 char buf[256];
166 int id = 0;
167
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100168 QTAILQ_FOREACH(nc, &net_clients, next) {
169 if (nc == nc1) {
Stefan Hajnoczid33d93b2012-07-24 16:35:05 +0100170 continue;
Mark McLoughlin5610c3a2009-10-08 19:58:23 +0100171 }
Stefan Hajnoczid33d93b2012-07-24 16:35:05 +0100172 /* For compatibility only bump id for net clients on a vlan */
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100173 if (strcmp(nc->model, model) == 0 &&
174 net_hub_id_for_client(nc, NULL) == 0) {
Markus Armbruster53e51d82011-06-16 18:45:36 +0200175 id++;
176 }
177 }
178
aliguori676cff22009-01-07 17:43:44 +0000179 snprintf(buf, sizeof(buf), "%s.%d", model, id);
180
Anthony Liguori7267c092011-08-20 22:09:37 -0500181 return g_strdup(buf);
aliguori676cff22009-01-07 17:43:44 +0000182}
183
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100184NetClientState *qemu_new_net_client(NetClientInfo *info,
185 NetClientState *peer,
186 const char *model,
187 const char *name)
aliguori63a01ef2008-10-31 19:10:00 +0000188{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100189 NetClientState *nc;
Mark McLoughlin5610c3a2009-10-08 19:58:23 +0100190
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100191 assert(info->size >= sizeof(NetClientState));
Mark McLoughlin5610c3a2009-10-08 19:58:23 +0100192
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100193 nc = g_malloc0(info->size);
Mark McLoughlin45460d12009-11-25 18:49:02 +0000194
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100195 nc->info = info;
196 nc->model = g_strdup(model);
Mark McLoughlin45460d12009-11-25 18:49:02 +0000197 if (name) {
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100198 nc->name = g_strdup(name);
Mark McLoughlin45460d12009-11-25 18:49:02 +0000199 } else {
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100200 nc->name = assign_name(nc, model);
Mark McLoughlin45460d12009-11-25 18:49:02 +0000201 }
aliguori63a01ef2008-10-31 19:10:00 +0000202
Stefan Hajnocziab5f3f82012-07-24 16:35:08 +0100203 if (peer) {
204 assert(!peer->peer);
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100205 nc->peer = peer;
206 peer->peer = nc;
Mark McLoughlind80b9fc2009-10-08 19:58:24 +0100207 }
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100208 QTAILQ_INSERT_TAIL(&net_clients, nc, next);
Mark McLoughlin5610c3a2009-10-08 19:58:23 +0100209
Zhi Yong Wu86a77c32012-07-24 16:35:17 +0100210 nc->send_queue = qemu_new_net_queue(nc);
aliguori63a01ef2008-10-31 19:10:00 +0000211
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100212 return nc;
aliguori63a01ef2008-10-31 19:10:00 +0000213}
214
Mark McLoughlinebef2c02009-11-25 18:49:10 +0000215NICState *qemu_new_nic(NetClientInfo *info,
216 NICConf *conf,
217 const char *model,
218 const char *name,
219 void *opaque)
220{
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100221 NetClientState *nc;
Mark McLoughlinebef2c02009-11-25 18:49:10 +0000222 NICState *nic;
223
Laszlo Ersek2be64a62012-07-17 16:17:12 +0200224 assert(info->type == NET_CLIENT_OPTIONS_KIND_NIC);
Mark McLoughlinebef2c02009-11-25 18:49:10 +0000225 assert(info->size >= sizeof(NICState));
226
Stefan Hajnocziab5f3f82012-07-24 16:35:08 +0100227 nc = qemu_new_net_client(info, conf->peer, model, name);
Mark McLoughlinebef2c02009-11-25 18:49:10 +0000228
229 nic = DO_UPCAST(NICState, nc, nc);
230 nic->conf = conf;
231 nic->opaque = opaque;
232
233 return nic;
234}
235
Stefan Hajnoczib20c6b92012-07-24 16:35:15 +0100236static void qemu_cleanup_net_client(NetClientState *nc)
aliguori63a01ef2008-10-31 19:10:00 +0000237{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100238 QTAILQ_REMOVE(&net_clients, nc, next);
aliguori63a01ef2008-10-31 19:10:00 +0000239
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100240 if (nc->info->cleanup) {
241 nc->info->cleanup(nc);
Mark McLoughlin5610c3a2009-10-08 19:58:23 +0100242 }
Michael S. Tsirkina083a892010-09-20 18:08:41 +0200243}
Mark McLoughlin5610c3a2009-10-08 19:58:23 +0100244
Stefan Hajnoczib20c6b92012-07-24 16:35:15 +0100245static void qemu_free_net_client(NetClientState *nc)
Michael S. Tsirkina083a892010-09-20 18:08:41 +0200246{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100247 if (nc->send_queue) {
248 qemu_del_net_queue(nc->send_queue);
Michael S. Tsirkina083a892010-09-20 18:08:41 +0200249 }
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100250 if (nc->peer) {
251 nc->peer->peer = NULL;
Mark McLoughlin5610c3a2009-10-08 19:58:23 +0100252 }
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100253 g_free(nc->name);
254 g_free(nc->model);
255 g_free(nc);
aliguori63a01ef2008-10-31 19:10:00 +0000256}
257
Stefan Hajnoczib20c6b92012-07-24 16:35:15 +0100258void qemu_del_net_client(NetClientState *nc)
Michael S. Tsirkina083a892010-09-20 18:08:41 +0200259{
260 /* If there is a peer NIC, delete and cleanup client, but do not free. */
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100261 if (nc->peer && nc->peer->info->type == NET_CLIENT_OPTIONS_KIND_NIC) {
262 NICState *nic = DO_UPCAST(NICState, nc, nc->peer);
Michael S. Tsirkina083a892010-09-20 18:08:41 +0200263 if (nic->peer_deleted) {
264 return;
265 }
266 nic->peer_deleted = true;
267 /* Let NIC know peer is gone. */
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100268 nc->peer->link_down = true;
269 if (nc->peer->info->link_status_changed) {
270 nc->peer->info->link_status_changed(nc->peer);
Michael S. Tsirkina083a892010-09-20 18:08:41 +0200271 }
Stefan Hajnoczib20c6b92012-07-24 16:35:15 +0100272 qemu_cleanup_net_client(nc);
Michael S. Tsirkina083a892010-09-20 18:08:41 +0200273 return;
274 }
275
276 /* If this is a peer NIC and peer has already been deleted, free it now. */
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100277 if (nc->peer && nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC) {
278 NICState *nic = DO_UPCAST(NICState, nc, nc);
Michael S. Tsirkina083a892010-09-20 18:08:41 +0200279 if (nic->peer_deleted) {
Stefan Hajnoczib20c6b92012-07-24 16:35:15 +0100280 qemu_free_net_client(nc->peer);
Michael S. Tsirkina083a892010-09-20 18:08:41 +0200281 }
282 }
283
Stefan Hajnoczib20c6b92012-07-24 16:35:15 +0100284 qemu_cleanup_net_client(nc);
285 qemu_free_net_client(nc);
Jan Kiszka1a609522009-06-24 14:42:31 +0200286}
287
Mark McLoughlin57f9ef12009-11-25 18:49:31 +0000288void qemu_foreach_nic(qemu_nic_foreach func, void *opaque)
289{
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100290 NetClientState *nc;
Mark McLoughlin57f9ef12009-11-25 18:49:31 +0000291
Stefan Hajnoczi94878992012-07-24 16:35:12 +0100292 QTAILQ_FOREACH(nc, &net_clients, next) {
Laszlo Ersek2be64a62012-07-17 16:17:12 +0200293 if (nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC) {
Mark McLoughlin57f9ef12009-11-25 18:49:31 +0000294 func(DO_UPCAST(NICState, nc, nc), opaque);
295 }
296 }
Mark McLoughlin57f9ef12009-11-25 18:49:31 +0000297}
298
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100299int qemu_can_send_packet(NetClientState *sender)
aliguori63a01ef2008-10-31 19:10:00 +0000300{
Stefan Hajnoczia005d072012-07-24 16:35:11 +0100301 if (!sender->peer) {
Mark McLoughlind80b9fc2009-10-08 19:58:24 +0100302 return 1;
303 }
304
Stefan Hajnoczia005d072012-07-24 16:35:11 +0100305 if (sender->peer->receive_disabled) {
306 return 0;
307 } else if (sender->peer->info->can_receive &&
308 !sender->peer->info->can_receive(sender->peer)) {
309 return 0;
aliguori63a01ef2008-10-31 19:10:00 +0000310 }
Vincent Palatin60c07d92011-03-02 17:25:02 -0500311 return 1;
aliguori63a01ef2008-10-31 19:10:00 +0000312}
313
Zhi Yong Wu86a77c32012-07-24 16:35:17 +0100314ssize_t qemu_deliver_packet(NetClientState *sender,
315 unsigned flags,
316 const uint8_t *data,
317 size_t size,
318 void *opaque)
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100319{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100320 NetClientState *nc = opaque;
Mark McLoughlin893379e2009-10-27 18:16:36 +0000321 ssize_t ret;
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100322
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100323 if (nc->link_down) {
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100324 return size;
325 }
326
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100327 if (nc->receive_disabled) {
Mark McLoughlin893379e2009-10-27 18:16:36 +0000328 return 0;
329 }
330
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100331 if (flags & QEMU_NET_PACKET_FLAG_RAW && nc->info->receive_raw) {
332 ret = nc->info->receive_raw(nc, data, size);
Mark McLoughlin893379e2009-10-27 18:16:36 +0000333 } else {
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100334 ret = nc->info->receive(nc, data, size);
Mark McLoughlin893379e2009-10-27 18:16:36 +0000335 }
336
337 if (ret == 0) {
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100338 nc->receive_disabled = 1;
Mark McLoughlin893379e2009-10-27 18:16:36 +0000339 };
340
341 return ret;
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100342}
343
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100344void qemu_purge_queued_packets(NetClientState *nc)
aliguori63a01ef2008-10-31 19:10:00 +0000345{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100346 if (!nc->peer) {
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100347 return;
348 }
349
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100350 qemu_net_queue_purge(nc->peer->send_queue, nc);
Mark McLoughlin8cad5512009-06-18 18:21:29 +0100351}
352
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100353void qemu_flush_queued_packets(NetClientState *nc)
Mark McLoughline94667b2009-04-29 11:48:12 +0100354{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100355 nc->receive_disabled = 0;
Mark McLoughlind80b9fc2009-10-08 19:58:24 +0100356
Paolo Bonzini987a9b42012-08-09 16:45:55 +0200357 if (qemu_net_queue_flush(nc->send_queue)) {
358 /* We emptied the queue successfully, signal to the IO thread to repoll
359 * the file descriptor (for tap, for example).
360 */
361 qemu_notify_event();
362 }
Mark McLoughline94667b2009-04-29 11:48:12 +0100363}
364
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100365static ssize_t qemu_send_packet_async_with_flags(NetClientState *sender,
Mark McLoughlinca77d172009-10-22 17:43:41 +0100366 unsigned flags,
367 const uint8_t *buf, int size,
368 NetPacketSent *sent_cb)
aliguori764a4d12009-04-21 19:56:41 +0000369{
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100370 NetQueue *queue;
Mark McLoughline94667b2009-04-29 11:48:12 +0100371
Mark McLoughlinf3b6c7f2009-04-29 12:15:26 +0100372#ifdef DEBUG_NET
Mark McLoughlind80b9fc2009-10-08 19:58:24 +0100373 printf("qemu_send_packet_async:\n");
Mark McLoughlinf3b6c7f2009-04-29 12:15:26 +0100374 hex_dump(stdout, buf, size);
375#endif
376
Stefan Hajnoczia005d072012-07-24 16:35:11 +0100377 if (sender->link_down || !sender->peer) {
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100378 return size;
379 }
380
Stefan Hajnoczia005d072012-07-24 16:35:11 +0100381 queue = sender->peer->send_queue;
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100382
Mark McLoughlinca77d172009-10-22 17:43:41 +0100383 return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb);
384}
385
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100386ssize_t qemu_send_packet_async(NetClientState *sender,
Mark McLoughlinca77d172009-10-22 17:43:41 +0100387 const uint8_t *buf, int size,
388 NetPacketSent *sent_cb)
389{
390 return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE,
391 buf, size, sent_cb);
Mark McLoughlinf3b6c7f2009-04-29 12:15:26 +0100392}
393
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100394void qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size)
Mark McLoughlinf3b6c7f2009-04-29 12:15:26 +0100395{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100396 qemu_send_packet_async(nc, buf, size, NULL);
aliguori63a01ef2008-10-31 19:10:00 +0000397}
398
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100399ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size)
Mark McLoughlinca77d172009-10-22 17:43:41 +0100400{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100401 return qemu_send_packet_async_with_flags(nc, QEMU_NET_PACKET_FLAG_RAW,
Mark McLoughlinca77d172009-10-22 17:43:41 +0100402 buf, size, NULL);
403}
404
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100405static ssize_t nc_sendv_compat(NetClientState *nc, const struct iovec *iov,
aliguorifbe78f42008-12-17 19:13:11 +0000406 int iovcnt)
407{
408 uint8_t buffer[4096];
Benjamin Poirierce053662011-02-23 19:57:21 -0500409 size_t offset;
aliguorifbe78f42008-12-17 19:13:11 +0000410
Michael Tokarevdcf6f5e2012-03-11 18:05:12 +0400411 offset = iov_to_buf(iov, iovcnt, 0, buffer, sizeof(buffer));
aliguorifbe78f42008-12-17 19:13:11 +0000412
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100413 return nc->info->receive(nc, buffer, offset);
aliguorifbe78f42008-12-17 19:13:11 +0000414}
415
Zhi Yong Wu86a77c32012-07-24 16:35:17 +0100416ssize_t qemu_deliver_packet_iov(NetClientState *sender,
417 unsigned flags,
418 const struct iovec *iov,
419 int iovcnt,
420 void *opaque)
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100421{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100422 NetClientState *nc = opaque;
Stefan Hajnoczic67f5dc2012-08-17 21:16:42 +0100423 int ret;
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100424
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100425 if (nc->link_down) {
Benjamin Poirierce053662011-02-23 19:57:21 -0500426 return iov_size(iov, iovcnt);
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100427 }
428
Stefan Hajnoczic67f5dc2012-08-17 21:16:42 +0100429 if (nc->receive_disabled) {
430 return 0;
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100431 }
Stefan Hajnoczic67f5dc2012-08-17 21:16:42 +0100432
433 if (nc->info->receive_iov) {
434 ret = nc->info->receive_iov(nc, iov, iovcnt);
435 } else {
436 ret = nc_sendv_compat(nc, iov, iovcnt);
437 }
438
439 if (ret == 0) {
440 nc->receive_disabled = 1;
441 }
442
443 return ret;
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100444}
445
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100446ssize_t qemu_sendv_packet_async(NetClientState *sender,
Mark McLoughlinf3b6c7f2009-04-29 12:15:26 +0100447 const struct iovec *iov, int iovcnt,
448 NetPacketSent *sent_cb)
aliguorifbe78f42008-12-17 19:13:11 +0000449{
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100450 NetQueue *queue;
451
Stefan Hajnoczia005d072012-07-24 16:35:11 +0100452 if (sender->link_down || !sender->peer) {
Benjamin Poirierce053662011-02-23 19:57:21 -0500453 return iov_size(iov, iovcnt);
aliguorifbe78f42008-12-17 19:13:11 +0000454 }
455
Stefan Hajnoczia005d072012-07-24 16:35:11 +0100456 queue = sender->peer->send_queue;
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100457
Mark McLoughlinc0b8e492009-10-22 17:43:40 +0100458 return qemu_net_queue_send_iov(queue, sender,
459 QEMU_NET_PACKET_FLAG_NONE,
460 iov, iovcnt, sent_cb);
aliguorifbe78f42008-12-17 19:13:11 +0000461}
462
Mark McLoughlinf3b6c7f2009-04-29 12:15:26 +0100463ssize_t
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100464qemu_sendv_packet(NetClientState *nc, const struct iovec *iov, int iovcnt)
Mark McLoughlinf3b6c7f2009-04-29 12:15:26 +0100465{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100466 return qemu_sendv_packet_async(nc, iov, iovcnt, NULL);
Mark McLoughlinf3b6c7f2009-04-29 12:15:26 +0100467}
468
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100469NetClientState *qemu_find_netdev(const char *id)
aliguori63a01ef2008-10-31 19:10:00 +0000470{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100471 NetClientState *nc;
Mark McLoughlin5610c3a2009-10-08 19:58:23 +0100472
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100473 QTAILQ_FOREACH(nc, &net_clients, next) {
474 if (nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC)
Markus Armbruster85dde9a2011-06-16 18:45:37 +0200475 continue;
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100476 if (!strcmp(nc->name, id)) {
477 return nc;
Mark McLoughlin5869c4d2009-10-08 19:58:29 +0100478 }
479 }
480
481 return NULL;
482}
483
aliguori76970792009-02-11 15:20:03 +0000484static int nic_get_free_idx(void)
485{
486 int index;
487
488 for (index = 0; index < MAX_NICS; index++)
489 if (!nd_table[index].used)
490 return index;
491 return -1;
492}
493
Markus Armbruster07caea32009-09-25 03:53:51 +0200494int qemu_show_nic_models(const char *arg, const char *const *models)
495{
496 int i;
497
Peter Maydellc8057f92012-08-02 13:45:54 +0100498 if (!arg || !is_help_option(arg)) {
Markus Armbruster07caea32009-09-25 03:53:51 +0200499 return 0;
Peter Maydellc8057f92012-08-02 13:45:54 +0100500 }
Markus Armbruster07caea32009-09-25 03:53:51 +0200501
502 fprintf(stderr, "qemu: Supported NIC models: ");
503 for (i = 0 ; models[i]; i++)
504 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
505 return 1;
506}
507
aliguorid07f22c2009-01-13 19:03:57 +0000508void qemu_check_nic_model(NICInfo *nd, const char *model)
509{
510 const char *models[2];
511
512 models[0] = model;
513 models[1] = NULL;
514
Markus Armbruster07caea32009-09-25 03:53:51 +0200515 if (qemu_show_nic_models(nd->model, models))
516 exit(0);
517 if (qemu_find_nic_model(nd, models, model) < 0)
518 exit(1);
aliguorid07f22c2009-01-13 19:03:57 +0000519}
520
Markus Armbruster07caea32009-09-25 03:53:51 +0200521int qemu_find_nic_model(NICInfo *nd, const char * const *models,
522 const char *default_model)
aliguorid07f22c2009-01-13 19:03:57 +0000523{
Markus Armbruster07caea32009-09-25 03:53:51 +0200524 int i;
aliguorid07f22c2009-01-13 19:03:57 +0000525
526 if (!nd->model)
Anthony Liguori7267c092011-08-20 22:09:37 -0500527 nd->model = g_strdup(default_model);
aliguorid07f22c2009-01-13 19:03:57 +0000528
Markus Armbruster07caea32009-09-25 03:53:51 +0200529 for (i = 0 ; models[i]; i++) {
530 if (strcmp(nd->model, models[i]) == 0)
531 return i;
aliguorid07f22c2009-01-13 19:03:57 +0000532 }
533
Markus Armbruster6daf1942011-06-22 14:03:54 +0200534 error_report("Unsupported NIC model: %s", nd->model);
Markus Armbruster07caea32009-09-25 03:53:51 +0200535 return -1;
aliguorid07f22c2009-01-13 19:03:57 +0000536}
537
Laszlo Ersek1a0c0952012-07-17 16:17:21 +0200538static int net_init_nic(const NetClientOptions *opts, const char *name,
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100539 NetClientState *peer)
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100540{
541 int idx;
542 NICInfo *nd;
Laszlo Ersek2456f362012-07-17 16:17:14 +0200543 const NetLegacyNicOptions *nic;
544
545 assert(opts->kind == NET_CLIENT_OPTIONS_KIND_NIC);
546 nic = opts->nic;
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100547
548 idx = nic_get_free_idx();
549 if (idx == -1 || nb_nics >= MAX_NICS) {
Markus Armbruster1ecda022010-02-18 17:25:24 +0100550 error_report("Too Many NICs");
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100551 return -1;
552 }
553
554 nd = &nd_table[idx];
555
556 memset(nd, 0, sizeof(*nd));
557
Laszlo Ersek2456f362012-07-17 16:17:14 +0200558 if (nic->has_netdev) {
559 nd->netdev = qemu_find_netdev(nic->netdev);
Mark McLoughlin5869c4d2009-10-08 19:58:29 +0100560 if (!nd->netdev) {
Laszlo Ersek2456f362012-07-17 16:17:14 +0200561 error_report("netdev '%s' not found", nic->netdev);
Mark McLoughlin5869c4d2009-10-08 19:58:29 +0100562 return -1;
563 }
564 } else {
Stefan Hajnoczid33d93b2012-07-24 16:35:05 +0100565 assert(peer);
566 nd->netdev = peer;
Mark McLoughlin5869c4d2009-10-08 19:58:29 +0100567 }
Mark McLoughlin6d952eb2009-10-08 19:58:21 +0100568 if (name) {
Anthony Liguori7267c092011-08-20 22:09:37 -0500569 nd->name = g_strdup(name);
Mark McLoughlin6d952eb2009-10-08 19:58:21 +0100570 }
Laszlo Ersek2456f362012-07-17 16:17:14 +0200571 if (nic->has_model) {
572 nd->model = g_strdup(nic->model);
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100573 }
Laszlo Ersek2456f362012-07-17 16:17:14 +0200574 if (nic->has_addr) {
575 nd->devaddr = g_strdup(nic->addr);
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100576 }
577
Laszlo Ersek2456f362012-07-17 16:17:14 +0200578 if (nic->has_macaddr &&
579 net_parse_macaddr(nd->macaddr.a, nic->macaddr) < 0) {
Markus Armbruster1ecda022010-02-18 17:25:24 +0100580 error_report("invalid syntax for ethernet address");
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100581 return -1;
582 }
Jan Kiszka6eed1852011-07-20 12:20:22 +0200583 qemu_macaddr_default_if_unset(&nd->macaddr);
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100584
Laszlo Ersek2456f362012-07-17 16:17:14 +0200585 if (nic->has_vectors) {
586 if (nic->vectors > 0x7ffffff) {
587 error_report("invalid # of vectors: %"PRIu32, nic->vectors);
588 return -1;
589 }
590 nd->nvectors = nic->vectors;
591 } else {
592 nd->nvectors = DEV_NVECTORS_UNSPECIFIED;
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100593 }
594
595 nd->used = 1;
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100596 nb_nics++;
597
598 return idx;
599}
600
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100601
Laszlo Ersek6687b792012-07-17 16:17:13 +0200602static int (* const net_client_init_fun[NET_CLIENT_OPTIONS_KIND_MAX])(
Laszlo Ersek1a0c0952012-07-17 16:17:21 +0200603 const NetClientOptions *opts,
Laszlo Ersek6687b792012-07-17 16:17:13 +0200604 const char *name,
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100605 NetClientState *peer) = {
Stefan Hajnoczif6c874e2012-07-24 16:35:04 +0100606 [NET_CLIENT_OPTIONS_KIND_NIC] = net_init_nic,
Mark McLoughlinec302ff2009-10-06 12:17:07 +0100607#ifdef CONFIG_SLIRP
Stefan Hajnoczif6c874e2012-07-24 16:35:04 +0100608 [NET_CLIENT_OPTIONS_KIND_USER] = net_init_slirp,
Mark McLoughlinec302ff2009-10-06 12:17:07 +0100609#endif
Stefan Hajnoczif6c874e2012-07-24 16:35:04 +0100610 [NET_CLIENT_OPTIONS_KIND_TAP] = net_init_tap,
611 [NET_CLIENT_OPTIONS_KIND_SOCKET] = net_init_socket,
Mark McLoughlindd510582009-10-06 12:17:10 +0100612#ifdef CONFIG_VDE
Stefan Hajnoczif6c874e2012-07-24 16:35:04 +0100613 [NET_CLIENT_OPTIONS_KIND_VDE] = net_init_vde,
Mark McLoughlindd510582009-10-06 12:17:10 +0100614#endif
Stefan Hajnoczif6c874e2012-07-24 16:35:04 +0100615 [NET_CLIENT_OPTIONS_KIND_DUMP] = net_init_dump,
Stefan Weil2944e4e2012-02-04 09:24:46 +0100616#ifdef CONFIG_NET_BRIDGE
Stefan Hajnoczif6c874e2012-07-24 16:35:04 +0100617 [NET_CLIENT_OPTIONS_KIND_BRIDGE] = net_init_bridge,
Laszlo Ersek6687b792012-07-17 16:17:13 +0200618#endif
Stefan Hajnoczif6c874e2012-07-24 16:35:04 +0100619 [NET_CLIENT_OPTIONS_KIND_HUBPORT] = net_init_hubport,
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100620};
621
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100622
Laszlo Ersek1a0c0952012-07-17 16:17:21 +0200623static int net_client_init1(const void *object, int is_netdev, Error **errp)
Laszlo Ersek6687b792012-07-17 16:17:13 +0200624{
625 union {
626 const Netdev *netdev;
627 const NetLegacy *net;
628 } u;
629 const NetClientOptions *opts;
630 const char *name;
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100631
Markus Armbruster5294e2c2010-03-25 17:22:38 +0100632 if (is_netdev) {
Laszlo Ersek6687b792012-07-17 16:17:13 +0200633 u.netdev = object;
634 opts = u.netdev->opts;
635 name = u.netdev->id;
636
637 switch (opts->kind) {
Mark McLoughlinf6b134a2009-10-08 19:58:27 +0100638#ifdef CONFIG_SLIRP
Laszlo Ersek6687b792012-07-17 16:17:13 +0200639 case NET_CLIENT_OPTIONS_KIND_USER:
Mark McLoughlinf6b134a2009-10-08 19:58:27 +0100640#endif
Laszlo Ersek6687b792012-07-17 16:17:13 +0200641 case NET_CLIENT_OPTIONS_KIND_TAP:
642 case NET_CLIENT_OPTIONS_KIND_SOCKET:
Mark McLoughlinf6b134a2009-10-08 19:58:27 +0100643#ifdef CONFIG_VDE
Laszlo Ersek6687b792012-07-17 16:17:13 +0200644 case NET_CLIENT_OPTIONS_KIND_VDE:
Mark McLoughlinf6b134a2009-10-08 19:58:27 +0100645#endif
Laszlo Ersek6687b792012-07-17 16:17:13 +0200646#ifdef CONFIG_NET_BRIDGE
647 case NET_CLIENT_OPTIONS_KIND_BRIDGE:
648#endif
Stefan Hajnoczif6c874e2012-07-24 16:35:04 +0100649 case NET_CLIENT_OPTIONS_KIND_HUBPORT:
Laszlo Ersek6687b792012-07-17 16:17:13 +0200650 break;
651
652 default:
Luiz Capitulino4559a1d2012-04-20 16:50:25 -0300653 error_set(errp, QERR_INVALID_PARAMETER_VALUE, "type",
654 "a netdev backend type");
Mark McLoughlinf6b134a2009-10-08 19:58:27 +0100655 return -1;
656 }
Laszlo Ersek6687b792012-07-17 16:17:13 +0200657 } else {
658 u.net = object;
659 opts = u.net->opts;
660 /* missing optional values have been initialized to "all bits zero" */
661 name = u.net->has_id ? u.net->id : u.net->name;
662 }
Mark McLoughlinf6b134a2009-10-08 19:58:27 +0100663
Laszlo Ersek6687b792012-07-17 16:17:13 +0200664 if (net_client_init_fun[opts->kind]) {
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100665 NetClientState *peer = NULL;
Laszlo Ersek6687b792012-07-17 16:17:13 +0200666
667 /* Do not add to a vlan if it's a -netdev or a nic with a netdev=
668 * parameter. */
669 if (!is_netdev &&
670 (opts->kind != NET_CLIENT_OPTIONS_KIND_NIC ||
671 !opts->nic->has_netdev)) {
Stefan Hajnoczid33d93b2012-07-24 16:35:05 +0100672 peer = net_hub_add_port(u.net->has_vlan ? u.net->vlan : 0, NULL);
Mark McLoughlinf6b134a2009-10-08 19:58:27 +0100673 }
Laszlo Ersek6687b792012-07-17 16:17:13 +0200674
Stefan Hajnoczid33d93b2012-07-24 16:35:05 +0100675 if (net_client_init_fun[opts->kind](opts, name, peer) < 0) {
Laszlo Ersek6687b792012-07-17 16:17:13 +0200676 /* TODO push error reporting into init() methods */
677 error_set(errp, QERR_DEVICE_INIT_FAILED,
678 NetClientOptionsKind_lookup[opts->kind]);
Mark McLoughlinf6b134a2009-10-08 19:58:27 +0100679 return -1;
680 }
681 }
Laszlo Ersek6687b792012-07-17 16:17:13 +0200682 return 0;
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100683}
684
Laszlo Ersek6687b792012-07-17 16:17:13 +0200685
686static void net_visit(Visitor *v, int is_netdev, void **object, Error **errp)
687{
688 if (is_netdev) {
689 visit_type_Netdev(v, (Netdev **)object, NULL, errp);
690 } else {
691 visit_type_NetLegacy(v, (NetLegacy **)object, NULL, errp);
692 }
693}
694
695
696int net_client_init(QemuOpts *opts, int is_netdev, Error **errp)
697{
698 void *object = NULL;
699 Error *err = NULL;
700 int ret = -1;
701
702 {
703 OptsVisitor *ov = opts_visitor_new(opts);
704
705 net_visit(opts_get_visitor(ov), is_netdev, &object, &err);
706 opts_visitor_cleanup(ov);
707 }
708
709 if (!err) {
Laszlo Ersek1a0c0952012-07-17 16:17:21 +0200710 ret = net_client_init1(object, is_netdev, &err);
Laszlo Ersek6687b792012-07-17 16:17:13 +0200711 }
712
713 if (object) {
714 QapiDeallocVisitor *dv = qapi_dealloc_visitor_new();
715
716 net_visit(qapi_dealloc_get_visitor(dv), is_netdev, &object, NULL);
717 qapi_dealloc_visitor_cleanup(dv);
718 }
719
720 error_propagate(errp, err);
721 return ret;
722}
723
724
aliguori6f338c32009-02-11 15:21:54 +0000725static int net_host_check_device(const char *device)
726{
727 int i;
aliguoribb9ea792009-04-21 19:56:28 +0000728 const char *valid_param_list[] = { "tap", "socket", "dump"
Stefan Weil2944e4e2012-02-04 09:24:46 +0100729#ifdef CONFIG_NET_BRIDGE
730 , "bridge"
731#endif
aliguori6f338c32009-02-11 15:21:54 +0000732#ifdef CONFIG_SLIRP
733 ,"user"
734#endif
735#ifdef CONFIG_VDE
736 ,"vde"
737#endif
738 };
739 for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
740 if (!strncmp(valid_param_list[i], device,
741 strlen(valid_param_list[i])))
742 return 1;
743 }
744
745 return 0;
746}
747
Luiz Capitulinof18c16d2009-08-28 15:27:14 -0300748void net_host_device_add(Monitor *mon, const QDict *qdict)
aliguori6f338c32009-02-11 15:21:54 +0000749{
Luiz Capitulinof18c16d2009-08-28 15:27:14 -0300750 const char *device = qdict_get_str(qdict, "device");
Mark McLoughlin7f1c9d22009-10-06 12:17:13 +0100751 const char *opts_str = qdict_get_try_str(qdict, "opts");
Luiz Capitulino4559a1d2012-04-20 16:50:25 -0300752 Error *local_err = NULL;
Mark McLoughlin7f1c9d22009-10-06 12:17:13 +0100753 QemuOpts *opts;
Luiz Capitulinof18c16d2009-08-28 15:27:14 -0300754
aliguori6f338c32009-02-11 15:21:54 +0000755 if (!net_host_check_device(device)) {
aliguori376253e2009-03-05 23:01:23 +0000756 monitor_printf(mon, "invalid host network device %s\n", device);
aliguori6f338c32009-02-11 15:21:54 +0000757 return;
758 }
Mark McLoughlin7f1c9d22009-10-06 12:17:13 +0100759
Gerd Hoffmann3329f072010-08-20 13:52:01 +0200760 opts = qemu_opts_parse(qemu_find_opts("net"), opts_str ? opts_str : "", 0);
Mark McLoughlin7f1c9d22009-10-06 12:17:13 +0100761 if (!opts) {
Mark McLoughlin7f1c9d22009-10-06 12:17:13 +0100762 return;
763 }
764
765 qemu_opt_set(opts, "type", device);
766
Luiz Capitulino4559a1d2012-04-20 16:50:25 -0300767 net_client_init(opts, 0, &local_err);
768 if (error_is_set(&local_err)) {
769 qerror_report_err(local_err);
770 error_free(local_err);
aliguori5c8be672009-04-21 19:56:32 +0000771 monitor_printf(mon, "adding host network device %s failed\n", device);
772 }
aliguori6f338c32009-02-11 15:21:54 +0000773}
774
Luiz Capitulinof18c16d2009-08-28 15:27:14 -0300775void net_host_device_remove(Monitor *mon, const QDict *qdict)
aliguori6f338c32009-02-11 15:21:54 +0000776{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100777 NetClientState *nc;
Luiz Capitulinof18c16d2009-08-28 15:27:14 -0300778 int vlan_id = qdict_get_int(qdict, "vlan_id");
779 const char *device = qdict_get_str(qdict, "device");
aliguori6f338c32009-02-11 15:21:54 +0000780
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100781 nc = net_hub_find_client_by_name(vlan_id, device);
782 if (!nc) {
aliguori6f338c32009-02-11 15:21:54 +0000783 return;
784 }
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100785 if (!net_host_check_device(nc->model)) {
aliguorie8f1f9d2009-04-21 19:56:08 +0000786 monitor_printf(mon, "invalid host network device %s\n", device);
787 return;
788 }
Stefan Hajnoczib20c6b92012-07-24 16:35:15 +0100789 qemu_del_net_client(nc);
aliguori6f338c32009-02-11 15:21:54 +0000790}
791
Luiz Capitulino928059a2012-04-18 17:34:15 -0300792void netdev_add(QemuOpts *opts, Error **errp)
793{
794 net_client_init(opts, 1, errp);
795}
796
797int qmp_netdev_add(Monitor *mon, const QDict *qdict, QObject **ret)
Markus Armbrusterae82d322010-03-25 17:22:40 +0100798{
Luiz Capitulino4e899782012-04-18 17:24:01 -0300799 Error *local_err = NULL;
Luiz Capitulino928059a2012-04-18 17:34:15 -0300800 QemuOptsList *opts_list;
Markus Armbrusterae82d322010-03-25 17:22:40 +0100801 QemuOpts *opts;
Markus Armbrusterae82d322010-03-25 17:22:40 +0100802
Luiz Capitulino928059a2012-04-18 17:34:15 -0300803 opts_list = qemu_find_opts_err("netdev", &local_err);
804 if (error_is_set(&local_err)) {
805 goto exit_err;
Markus Armbrusterae82d322010-03-25 17:22:40 +0100806 }
807
Luiz Capitulino928059a2012-04-18 17:34:15 -0300808 opts = qemu_opts_from_qdict(opts_list, qdict, &local_err);
809 if (error_is_set(&local_err)) {
810 goto exit_err;
811 }
812
813 netdev_add(opts, &local_err);
814 if (error_is_set(&local_err)) {
Yoshiaki Tamura410cbaf2010-06-21 10:41:36 +0900815 qemu_opts_del(opts);
Luiz Capitulino928059a2012-04-18 17:34:15 -0300816 goto exit_err;
Yoshiaki Tamura410cbaf2010-06-21 10:41:36 +0900817 }
818
Luiz Capitulino928059a2012-04-18 17:34:15 -0300819 return 0;
820
821exit_err:
822 qerror_report_err(local_err);
823 error_free(local_err);
824 return -1;
Markus Armbrusterae82d322010-03-25 17:22:40 +0100825}
826
Luiz Capitulino5f964152012-04-16 14:36:32 -0300827void qmp_netdev_del(const char *id, Error **errp)
Markus Armbrusterae82d322010-03-25 17:22:40 +0100828{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100829 NetClientState *nc;
Stefan Hajnoczi645c9492012-10-24 14:34:12 +0200830 QemuOpts *opts;
Markus Armbrusterae82d322010-03-25 17:22:40 +0100831
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100832 nc = qemu_find_netdev(id);
833 if (!nc) {
Luiz Capitulino5f964152012-04-16 14:36:32 -0300834 error_set(errp, QERR_DEVICE_NOT_FOUND, id);
835 return;
Markus Armbrusterae82d322010-03-25 17:22:40 +0100836 }
Luiz Capitulino5f964152012-04-16 14:36:32 -0300837
Stefan Hajnoczi645c9492012-10-24 14:34:12 +0200838 opts = qemu_opts_find(qemu_find_opts_err("netdev", NULL), id);
839 if (!opts) {
840 error_setg(errp, "Device '%s' is not a netdev", id);
841 return;
842 }
843
Stefan Hajnoczib20c6b92012-07-24 16:35:15 +0100844 qemu_del_net_client(nc);
Stefan Hajnoczi645c9492012-10-24 14:34:12 +0200845 qemu_opts_del(opts);
Markus Armbrusterae82d322010-03-25 17:22:40 +0100846}
847
Zhi Yong Wu1a859592012-07-24 16:35:16 +0100848void print_net_client(Monitor *mon, NetClientState *nc)
Jan Kiszka44e798d2011-07-20 12:20:21 +0200849{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100850 monitor_printf(mon, "%s: type=%s,%s\n", nc->name,
851 NetClientOptionsKind_lookup[nc->info->type], nc->info_str);
Jan Kiszka44e798d2011-07-20 12:20:21 +0200852}
853
aliguori376253e2009-03-05 23:01:23 +0000854void do_info_network(Monitor *mon)
aliguori63a01ef2008-10-31 19:10:00 +0000855{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100856 NetClientState *nc, *peer;
Laszlo Ersek2be64a62012-07-17 16:17:12 +0200857 NetClientOptionsKind type;
aliguori63a01ef2008-10-31 19:10:00 +0000858
Zhi Yong Wu1a859592012-07-24 16:35:16 +0100859 net_hub_info(mon);
Mark McLoughlin5610c3a2009-10-08 19:58:23 +0100860
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100861 QTAILQ_FOREACH(nc, &net_clients, next) {
862 peer = nc->peer;
863 type = nc->info->type;
Zhi Yong Wu1a859592012-07-24 16:35:16 +0100864
865 /* Skip if already printed in hub info */
866 if (net_hub_id_for_client(nc, NULL) == 0) {
867 continue;
Mark McLoughlin5610c3a2009-10-08 19:58:23 +0100868 }
Zhi Yong Wu1a859592012-07-24 16:35:16 +0100869
Laszlo Ersek2be64a62012-07-17 16:17:12 +0200870 if (!peer || type == NET_CLIENT_OPTIONS_KIND_NIC) {
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100871 print_net_client(mon, nc);
Jan Kiszka19061e62011-07-20 12:20:19 +0200872 } /* else it's a netdev connected to a NIC, printed with the NIC */
Laszlo Ersek2be64a62012-07-17 16:17:12 +0200873 if (peer && type == NET_CLIENT_OPTIONS_KIND_NIC) {
Zhi Yong Wu1a859592012-07-24 16:35:16 +0100874 monitor_printf(mon, " \\ ");
Jan Kiszka44e798d2011-07-20 12:20:21 +0200875 print_net_client(mon, peer);
Markus Armbrustera0104e02010-02-11 14:45:01 +0100876 }
Markus Armbrustera0104e02010-02-11 14:45:01 +0100877 }
aliguori63a01ef2008-10-31 19:10:00 +0000878}
879
Luiz Capitulino4b371562011-11-23 13:11:55 -0200880void qmp_set_link(const char *name, bool up, Error **errp)
aliguori436e5e52009-01-08 19:44:06 +0000881{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100882 NetClientState *nc = NULL;
aliguori436e5e52009-01-08 19:44:06 +0000883
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100884 QTAILQ_FOREACH(nc, &net_clients, next) {
885 if (!strcmp(nc->name, name)) {
Markus Armbruster85dde9a2011-06-16 18:45:37 +0200886 goto done;
887 }
888 }
edgar_igldd5de372009-01-09 00:48:28 +0000889done:
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100890 if (!nc) {
Luiz Capitulino4b371562011-11-23 13:11:55 -0200891 error_set(errp, QERR_DEVICE_NOT_FOUND, name);
892 return;
aliguori436e5e52009-01-08 19:44:06 +0000893 }
894
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100895 nc->link_down = !up;
aliguori436e5e52009-01-08 19:44:06 +0000896
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100897 if (nc->info->link_status_changed) {
898 nc->info->link_status_changed(nc);
Mark McLoughlin665a3b02009-11-25 18:49:30 +0000899 }
Michael S. Tsirkinab1cbe12011-02-09 18:45:04 +0200900
901 /* Notify peer. Don't update peer link status: this makes it possible to
902 * disconnect from host network without notifying the guest.
903 * FIXME: is disconnected link status change operation useful?
904 *
905 * Current behaviour is compatible with qemu vlans where there could be
906 * multiple clients that can still communicate with each other in
907 * disconnected mode. For now maintain this compatibility. */
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100908 if (nc->peer && nc->peer->info->link_status_changed) {
909 nc->peer->info->link_status_changed(nc->peer);
Michael S. Tsirkinab1cbe12011-02-09 18:45:04 +0200910 }
aliguori436e5e52009-01-08 19:44:06 +0000911}
912
aliguori63a01ef2008-10-31 19:10:00 +0000913void net_cleanup(void)
914{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100915 NetClientState *nc, *next_vc;
aliguori63a01ef2008-10-31 19:10:00 +0000916
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100917 QTAILQ_FOREACH_SAFE(nc, &net_clients, next, next_vc) {
Stefan Hajnoczib20c6b92012-07-24 16:35:15 +0100918 qemu_del_net_client(nc);
Mark McLoughlin577c4af2009-10-08 19:58:28 +0100919 }
aliguori63a01ef2008-10-31 19:10:00 +0000920}
921
Markus Armbruster668680f2010-02-11 14:44:58 +0100922void net_check_clients(void)
aliguori63a01ef2008-10-31 19:10:00 +0000923{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100924 NetClientState *nc;
Peter Maydell48e2faf2011-05-20 16:50:01 +0100925 int i;
aliguori63a01ef2008-10-31 19:10:00 +0000926
Peter Maydell641f6ea2011-05-20 16:50:00 +0100927 /* Don't warn about the default network setup that you get if
928 * no command line -net or -netdev options are specified. There
929 * are two cases that we would otherwise complain about:
930 * (1) board doesn't support a NIC but the implicit "-net nic"
931 * requested one
932 * (2) CONFIG_SLIRP not set, in which case the implicit "-net nic"
933 * sets up a nic that isn't connected to anything.
934 */
935 if (default_net) {
936 return;
937 }
938
Stefan Hajnoczi81017642012-07-24 16:35:07 +0100939 net_hub_check_clients();
Tristan Gingoldac60cc12011-03-15 14:20:54 +0100940
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100941 QTAILQ_FOREACH(nc, &net_clients, next) {
942 if (!nc->peer) {
Markus Armbrusterefe32fd2010-02-11 14:45:00 +0100943 fprintf(stderr, "Warning: %s %s has no peer\n",
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100944 nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC ?
945 "nic" : "netdev", nc->name);
Markus Armbrusterefe32fd2010-02-11 14:45:00 +0100946 }
947 }
Peter Maydell48e2faf2011-05-20 16:50:01 +0100948
949 /* Check that all NICs requested via -net nic actually got created.
950 * NICs created via -device don't need to be checked here because
951 * they are always instantiated.
952 */
953 for (i = 0; i < MAX_NICS; i++) {
954 NICInfo *nd = &nd_table[i];
955 if (nd->used && !nd->instantiated) {
956 fprintf(stderr, "Warning: requested NIC (%s, model %s) "
957 "was not created (not supported by this machine?)\n",
958 nd->name ? nd->name : "anonymous",
959 nd->model ? nd->model : "unspecified");
960 }
961 }
aliguori63a01ef2008-10-31 19:10:00 +0000962}
Mark McLoughlindc1c9fe2009-10-06 12:17:16 +0100963
964static int net_init_client(QemuOpts *opts, void *dummy)
965{
Luiz Capitulino4559a1d2012-04-20 16:50:25 -0300966 Error *local_err = NULL;
967
968 net_client_init(opts, 0, &local_err);
969 if (error_is_set(&local_err)) {
970 qerror_report_err(local_err);
971 error_free(local_err);
Mark McLoughlinc1671a02009-10-12 09:52:00 +0100972 return -1;
Luiz Capitulino4559a1d2012-04-20 16:50:25 -0300973 }
974
Mark McLoughlinc1671a02009-10-12 09:52:00 +0100975 return 0;
Mark McLoughlinf6b134a2009-10-08 19:58:27 +0100976}
977
978static int net_init_netdev(QemuOpts *opts, void *dummy)
979{
Luiz Capitulino4559a1d2012-04-20 16:50:25 -0300980 Error *local_err = NULL;
981 int ret;
982
983 ret = net_client_init(opts, 1, &local_err);
984 if (error_is_set(&local_err)) {
985 qerror_report_err(local_err);
986 error_free(local_err);
987 return -1;
988 }
989
990 return ret;
Mark McLoughlindc1c9fe2009-10-06 12:17:16 +0100991}
992
993int net_init_clients(void)
994{
Gerd Hoffmann3329f072010-08-20 13:52:01 +0200995 QemuOptsList *net = qemu_find_opts("net");
996
Gerd Hoffmanncb4522c2009-12-08 13:11:47 +0100997 if (default_net) {
Mark McLoughlindc1c9fe2009-10-06 12:17:16 +0100998 /* if no clients, we use a default config */
Gerd Hoffmann3329f072010-08-20 13:52:01 +0200999 qemu_opts_set(net, NULL, "type", "nic");
Mark McLoughlindc1c9fe2009-10-06 12:17:16 +01001000#ifdef CONFIG_SLIRP
Gerd Hoffmann3329f072010-08-20 13:52:01 +02001001 qemu_opts_set(net, NULL, "type", "user");
Mark McLoughlindc1c9fe2009-10-06 12:17:16 +01001002#endif
1003 }
1004
Stefan Hajnoczi94878992012-07-24 16:35:12 +01001005 QTAILQ_INIT(&net_clients);
Mark McLoughlin5610c3a2009-10-08 19:58:23 +01001006
Gerd Hoffmann3329f072010-08-20 13:52:01 +02001007 if (qemu_opts_foreach(qemu_find_opts("netdev"), net_init_netdev, NULL, 1) == -1)
Mark McLoughlinf6b134a2009-10-08 19:58:27 +01001008 return -1;
1009
Gerd Hoffmann3329f072010-08-20 13:52:01 +02001010 if (qemu_opts_foreach(net, net_init_client, NULL, 1) == -1) {
Mark McLoughlindc1c9fe2009-10-06 12:17:16 +01001011 return -1;
1012 }
1013
Mark McLoughlindc1c9fe2009-10-06 12:17:16 +01001014 return 0;
1015}
1016
Mark McLoughlin7f161aa2009-10-08 19:58:25 +01001017int net_client_parse(QemuOptsList *opts_list, const char *optarg)
Mark McLoughlindc1c9fe2009-10-06 12:17:16 +01001018{
Juan Quintelaa3a766e2009-10-07 23:44:15 +02001019#if defined(CONFIG_SLIRP)
Mark McLoughlin68ac40d2009-11-25 18:48:54 +00001020 int ret;
1021 if (net_slirp_parse_legacy(opts_list, optarg, &ret)) {
Mark McLoughlindc1c9fe2009-10-06 12:17:16 +01001022 return ret;
1023 }
Juan Quintelaa3a766e2009-10-07 23:44:15 +02001024#endif
Mark McLoughlin68ac40d2009-11-25 18:48:54 +00001025
Markus Armbruster8212c642010-02-10 19:52:18 +01001026 if (!qemu_opts_parse(opts_list, optarg, 1)) {
Mark McLoughlindc1c9fe2009-10-06 12:17:16 +01001027 return -1;
1028 }
1029
Gerd Hoffmanncb4522c2009-12-08 13:11:47 +01001030 default_net = 0;
Mark McLoughlindc1c9fe2009-10-06 12:17:16 +01001031 return 0;
1032}
Jason Wang7fc8d912012-03-05 11:08:50 +08001033
1034/* From FreeBSD */
1035/* XXX: optimize */
1036unsigned compute_mcast_idx(const uint8_t *ep)
1037{
1038 uint32_t crc;
1039 int carry, i, j;
1040 uint8_t b;
1041
1042 crc = 0xffffffff;
1043 for (i = 0; i < 6; i++) {
1044 b = *ep++;
1045 for (j = 0; j < 8; j++) {
1046 carry = ((crc & 0x80000000L) ? 1 : 0) ^ (b & 0x01);
1047 crc <<= 1;
1048 b >>= 1;
1049 if (carry) {
1050 crc = ((crc ^ POLYNOMIAL) | carry);
1051 }
1052 }
1053 }
1054 return crc >> 26;
1055}