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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 Bonzini1422e322012-10-24 08:43:34 +020026#include "net/net.h"
Paolo Bonzinifd9400b2012-10-24 11:27:28 +020027#include "clients.h"
28#include "hub.h"
Paolo Bonzini1422e322012-10-24 08:43:34 +020029#include "net/slirp.h"
Paolo Bonzinifd9400b2012-10-24 11:27:28 +020030#include "util.h"
Paolo Bonzinia245fc12012-09-17 18:43:51 +020031
Paolo Bonzini83c90892012-12-17 18:19:49 +010032#include "monitor/monitor.h"
Mark McLoughlin1df49e02009-11-25 18:48:58 +000033#include "qemu-common.h"
Paolo Bonzini1de7afc2012-12-17 18:20:00 +010034#include "qemu/sockets.h"
35#include "qemu/config-file.h"
Luiz Capitulino4b371562011-11-23 13:11:55 -020036#include "qmp-commands.h"
Amit Shah75422b02010-02-25 17:24:43 +053037#include "hw/qdev.h"
Paolo Bonzini1de7afc2012-12-17 18:20:00 +010038#include "qemu/iov.h"
Laszlo Ersek6687b792012-07-17 16:17:13 +020039#include "qapi-visit.h"
40#include "qapi/opts-visitor.h"
Paolo Bonzini7b1b5d12012-12-17 18:19:43 +010041#include "qapi/dealloc-visitor.h"
blueswir1511d2b12009-03-07 15:32:56 +000042
Stefan Weil2944e4e2012-02-04 09:24:46 +010043/* Net bridge is currently not supported for W32. */
44#if !defined(_WIN32)
45# define CONFIG_NET_BRIDGE
46#endif
47
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +010048static QTAILQ_HEAD(, NetClientState) net_clients;
aliguori63a01ef2008-10-31 19:10:00 +000049
Gerd Hoffmanncb4522c2009-12-08 13:11:47 +010050int default_net = 1;
51
aliguori63a01ef2008-10-31 19:10:00 +000052/***********************************************************/
53/* network device redirectors */
54
Mark McLoughlin68ac40d2009-11-25 18:48:54 +000055#if defined(DEBUG_NET)
aliguori63a01ef2008-10-31 19:10:00 +000056static void hex_dump(FILE *f, const uint8_t *buf, int size)
57{
58 int len, i, j, c;
59
60 for(i=0;i<size;i+=16) {
61 len = size - i;
62 if (len > 16)
63 len = 16;
64 fprintf(f, "%08x ", i);
65 for(j=0;j<16;j++) {
66 if (j < len)
67 fprintf(f, " %02x", buf[i+j]);
68 else
69 fprintf(f, " ");
70 }
71 fprintf(f, " ");
72 for(j=0;j<len;j++) {
73 c = buf[i+j];
74 if (c < ' ' || c > '~')
75 c = '.';
76 fprintf(f, "%c", c);
77 }
78 fprintf(f, "\n");
79 }
80}
81#endif
82
aliguori63a01ef2008-10-31 19:10:00 +000083static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
84{
85 const char *p, *p1;
86 int len;
87 p = *pp;
88 p1 = strchr(p, sep);
89 if (!p1)
90 return -1;
91 len = p1 - p;
92 p1++;
93 if (buf_size > 0) {
94 if (len > buf_size - 1)
95 len = buf_size - 1;
96 memcpy(buf, p, len);
97 buf[len] = '\0';
98 }
99 *pp = p1;
100 return 0;
101}
102
aliguori63a01ef2008-10-31 19:10:00 +0000103int parse_host_port(struct sockaddr_in *saddr, const char *str)
104{
105 char buf[512];
106 struct hostent *he;
107 const char *p, *r;
108 int port;
109
110 p = str;
111 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
112 return -1;
113 saddr->sin_family = AF_INET;
114 if (buf[0] == '\0') {
115 saddr->sin_addr.s_addr = 0;
116 } else {
blueswir1cd390082008-11-16 13:53:32 +0000117 if (qemu_isdigit(buf[0])) {
aliguori63a01ef2008-10-31 19:10:00 +0000118 if (!inet_aton(buf, &saddr->sin_addr))
119 return -1;
120 } else {
121 if ((he = gethostbyname(buf)) == NULL)
122 return - 1;
123 saddr->sin_addr = *(struct in_addr *)he->h_addr;
124 }
125 }
126 port = strtol(p, (char **)&r, 0);
127 if (r == p)
128 return -1;
129 saddr->sin_port = htons(port);
130 return 0;
131}
132
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100133void qemu_format_nic_info_str(NetClientState *nc, uint8_t macaddr[6])
aliguori7cb7434b2009-01-07 17:46:21 +0000134{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100135 snprintf(nc->info_str, sizeof(nc->info_str),
aliguori4dda4062009-01-08 19:01:37 +0000136 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100137 nc->model,
aliguori7cb7434b2009-01-07 17:46:21 +0000138 macaddr[0], macaddr[1], macaddr[2],
139 macaddr[3], macaddr[4], macaddr[5]);
140}
141
Gerd Hoffmann76d32cb2009-10-21 15:25:22 +0200142void qemu_macaddr_default_if_unset(MACAddr *macaddr)
143{
144 static int index = 0;
145 static const MACAddr zero = { .a = { 0,0,0,0,0,0 } };
146
147 if (memcmp(macaddr, &zero, sizeof(zero)) != 0)
148 return;
149 macaddr->a[0] = 0x52;
150 macaddr->a[1] = 0x54;
151 macaddr->a[2] = 0x00;
152 macaddr->a[3] = 0x12;
153 macaddr->a[4] = 0x34;
154 macaddr->a[5] = 0x56 + index++;
155}
156
Stefan Hajnoczid33d93b2012-07-24 16:35:05 +0100157/**
158 * Generate a name for net client
159 *
160 * Only net clients created with the legacy -net option need this. Naming is
161 * mandatory for net clients created with -netdev.
162 */
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100163static char *assign_name(NetClientState *nc1, const char *model)
aliguori676cff22009-01-07 17:43:44 +0000164{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100165 NetClientState *nc;
aliguori676cff22009-01-07 17:43:44 +0000166 char buf[256];
167 int id = 0;
168
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100169 QTAILQ_FOREACH(nc, &net_clients, next) {
170 if (nc == nc1) {
Stefan Hajnoczid33d93b2012-07-24 16:35:05 +0100171 continue;
Mark McLoughlin5610c3a2009-10-08 19:58:23 +0100172 }
Stefan Hajnoczid33d93b2012-07-24 16:35:05 +0100173 /* For compatibility only bump id for net clients on a vlan */
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100174 if (strcmp(nc->model, model) == 0 &&
175 net_hub_id_for_client(nc, NULL) == 0) {
Markus Armbruster53e51d82011-06-16 18:45:36 +0200176 id++;
177 }
178 }
179
aliguori676cff22009-01-07 17:43:44 +0000180 snprintf(buf, sizeof(buf), "%s.%d", model, id);
181
Anthony Liguori7267c092011-08-20 22:09:37 -0500182 return g_strdup(buf);
aliguori676cff22009-01-07 17:43:44 +0000183}
184
Jason Wangf7860452013-01-30 19:12:27 +0800185static void qemu_net_client_destructor(NetClientState *nc)
186{
187 g_free(nc);
188}
189
Jason Wang18a15412013-01-30 19:12:26 +0800190static void qemu_net_client_setup(NetClientState *nc,
191 NetClientInfo *info,
192 NetClientState *peer,
193 const char *model,
Jason Wangf7860452013-01-30 19:12:27 +0800194 const char *name,
195 NetClientDestructor *destructor)
aliguori63a01ef2008-10-31 19:10:00 +0000196{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100197 nc->info = info;
198 nc->model = g_strdup(model);
Mark McLoughlin45460d12009-11-25 18:49:02 +0000199 if (name) {
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100200 nc->name = g_strdup(name);
Mark McLoughlin45460d12009-11-25 18:49:02 +0000201 } else {
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100202 nc->name = assign_name(nc, model);
Mark McLoughlin45460d12009-11-25 18:49:02 +0000203 }
aliguori63a01ef2008-10-31 19:10:00 +0000204
Stefan Hajnocziab5f3f82012-07-24 16:35:08 +0100205 if (peer) {
206 assert(!peer->peer);
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100207 nc->peer = peer;
208 peer->peer = nc;
Mark McLoughlind80b9fc2009-10-08 19:58:24 +0100209 }
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100210 QTAILQ_INSERT_TAIL(&net_clients, nc, next);
Mark McLoughlin5610c3a2009-10-08 19:58:23 +0100211
Zhi Yong Wu86a77c32012-07-24 16:35:17 +0100212 nc->send_queue = qemu_new_net_queue(nc);
Jason Wangf7860452013-01-30 19:12:27 +0800213 nc->destructor = destructor;
Jason Wang18a15412013-01-30 19:12:26 +0800214}
215
216NetClientState *qemu_new_net_client(NetClientInfo *info,
217 NetClientState *peer,
218 const char *model,
219 const char *name)
220{
221 NetClientState *nc;
222
223 assert(info->size >= sizeof(NetClientState));
224
225 nc = g_malloc0(info->size);
Jason Wangf7860452013-01-30 19:12:27 +0800226 qemu_net_client_setup(nc, info, peer, model, name,
227 qemu_net_client_destructor);
Jason Wang18a15412013-01-30 19:12:26 +0800228
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100229 return nc;
aliguori63a01ef2008-10-31 19:10:00 +0000230}
231
Mark McLoughlinebef2c02009-11-25 18:49:10 +0000232NICState *qemu_new_nic(NetClientInfo *info,
233 NICConf *conf,
234 const char *model,
235 const char *name,
236 void *opaque)
237{
Jason Wang1ceef9f2013-01-30 19:12:28 +0800238 NetClientState **peers = conf->peers.ncs;
Mark McLoughlinebef2c02009-11-25 18:49:10 +0000239 NICState *nic;
Jason Wangf6b26cf2013-02-22 23:15:06 +0800240 int i, queues = MAX(1, conf->queues);
Mark McLoughlinebef2c02009-11-25 18:49:10 +0000241
Laszlo Ersek2be64a62012-07-17 16:17:12 +0200242 assert(info->type == NET_CLIENT_OPTIONS_KIND_NIC);
Mark McLoughlinebef2c02009-11-25 18:49:10 +0000243 assert(info->size >= sizeof(NICState));
244
Jason Wangf6b26cf2013-02-22 23:15:06 +0800245 nic = g_malloc0(info->size + sizeof(NetClientState) * queues);
246 nic->ncs = (void *)nic + info->size;
Mark McLoughlinebef2c02009-11-25 18:49:10 +0000247 nic->conf = conf;
248 nic->opaque = opaque;
249
Jason Wangf6b26cf2013-02-22 23:15:06 +0800250 for (i = 0; i < queues; i++) {
251 qemu_net_client_setup(&nic->ncs[i], info, peers[i], model, name,
Jason Wang1ceef9f2013-01-30 19:12:28 +0800252 NULL);
253 nic->ncs[i].queue_index = i;
254 }
255
Mark McLoughlinebef2c02009-11-25 18:49:10 +0000256 return nic;
257}
258
Jason Wang1ceef9f2013-01-30 19:12:28 +0800259NetClientState *qemu_get_subqueue(NICState *nic, int queue_index)
260{
Jason Wangf6b26cf2013-02-22 23:15:06 +0800261 return nic->ncs + queue_index;
Jason Wang1ceef9f2013-01-30 19:12:28 +0800262}
263
Jason Wangb356f762013-01-30 19:12:22 +0800264NetClientState *qemu_get_queue(NICState *nic)
265{
Jason Wang1ceef9f2013-01-30 19:12:28 +0800266 return qemu_get_subqueue(nic, 0);
Jason Wangb356f762013-01-30 19:12:22 +0800267}
268
Jason Wangcc1f0f42013-01-30 19:12:23 +0800269NICState *qemu_get_nic(NetClientState *nc)
270{
Jason Wang1ceef9f2013-01-30 19:12:28 +0800271 NetClientState *nc0 = nc - nc->queue_index;
272
Jason Wangf6b26cf2013-02-22 23:15:06 +0800273 return (NICState *)((void *)nc0 - nc->info->size);
Jason Wangcc1f0f42013-01-30 19:12:23 +0800274}
275
276void *qemu_get_nic_opaque(NetClientState *nc)
277{
278 NICState *nic = qemu_get_nic(nc);
279
280 return nic->opaque;
281}
282
Stefan Hajnoczib20c6b92012-07-24 16:35:15 +0100283static void qemu_cleanup_net_client(NetClientState *nc)
aliguori63a01ef2008-10-31 19:10:00 +0000284{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100285 QTAILQ_REMOVE(&net_clients, nc, next);
aliguori63a01ef2008-10-31 19:10:00 +0000286
Andreas Färbercc2a9042013-02-12 23:16:06 +0100287 if (nc->info->cleanup) {
288 nc->info->cleanup(nc);
289 }
Michael S. Tsirkina083a892010-09-20 18:08:41 +0200290}
Mark McLoughlin5610c3a2009-10-08 19:58:23 +0100291
Stefan Hajnoczib20c6b92012-07-24 16:35:15 +0100292static void qemu_free_net_client(NetClientState *nc)
Michael S. Tsirkina083a892010-09-20 18:08:41 +0200293{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100294 if (nc->send_queue) {
295 qemu_del_net_queue(nc->send_queue);
Michael S. Tsirkina083a892010-09-20 18:08:41 +0200296 }
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100297 if (nc->peer) {
298 nc->peer->peer = NULL;
Mark McLoughlin5610c3a2009-10-08 19:58:23 +0100299 }
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100300 g_free(nc->name);
301 g_free(nc->model);
Jason Wangf7860452013-01-30 19:12:27 +0800302 if (nc->destructor) {
303 nc->destructor(nc);
304 }
aliguori63a01ef2008-10-31 19:10:00 +0000305}
306
Stefan Hajnoczib20c6b92012-07-24 16:35:15 +0100307void qemu_del_net_client(NetClientState *nc)
Michael S. Tsirkina083a892010-09-20 18:08:41 +0200308{
Jason Wang1ceef9f2013-01-30 19:12:28 +0800309 NetClientState *ncs[MAX_QUEUE_NUM];
310 int queues, i;
311
312 /* If the NetClientState belongs to a multiqueue backend, we will change all
313 * other NetClientStates also.
314 */
315 queues = qemu_find_net_clients_except(nc->name, ncs,
316 NET_CLIENT_OPTIONS_KIND_NIC,
317 MAX_QUEUE_NUM);
318 assert(queues != 0);
319
Michael S. Tsirkina083a892010-09-20 18:08:41 +0200320 /* If there is a peer NIC, delete and cleanup client, but do not free. */
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100321 if (nc->peer && nc->peer->info->type == NET_CLIENT_OPTIONS_KIND_NIC) {
Jason Wangcc1f0f42013-01-30 19:12:23 +0800322 NICState *nic = qemu_get_nic(nc->peer);
Michael S. Tsirkina083a892010-09-20 18:08:41 +0200323 if (nic->peer_deleted) {
324 return;
325 }
326 nic->peer_deleted = true;
Jason Wang1ceef9f2013-01-30 19:12:28 +0800327
328 for (i = 0; i < queues; i++) {
329 ncs[i]->peer->link_down = true;
330 }
331
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100332 if (nc->peer->info->link_status_changed) {
333 nc->peer->info->link_status_changed(nc->peer);
Michael S. Tsirkina083a892010-09-20 18:08:41 +0200334 }
Jason Wang1ceef9f2013-01-30 19:12:28 +0800335
336 for (i = 0; i < queues; i++) {
337 qemu_cleanup_net_client(ncs[i]);
338 }
339
Michael S. Tsirkina083a892010-09-20 18:08:41 +0200340 return;
341 }
342
Jason Wang948ecf22013-01-30 19:12:24 +0800343 assert(nc->info->type != NET_CLIENT_OPTIONS_KIND_NIC);
344
Jason Wang1ceef9f2013-01-30 19:12:28 +0800345 for (i = 0; i < queues; i++) {
346 qemu_cleanup_net_client(ncs[i]);
347 qemu_free_net_client(ncs[i]);
348 }
Jason Wang948ecf22013-01-30 19:12:24 +0800349}
350
351void qemu_del_nic(NICState *nic)
352{
Michael Rothb8904922013-02-06 18:25:48 -0600353 int i, queues = MAX(nic->conf->queues, 1);
Jason Wang1ceef9f2013-01-30 19:12:28 +0800354
Michael S. Tsirkina083a892010-09-20 18:08:41 +0200355 /* If this is a peer NIC and peer has already been deleted, free it now. */
Jason Wang1ceef9f2013-01-30 19:12:28 +0800356 if (nic->peer_deleted) {
357 for (i = 0; i < queues; i++) {
358 qemu_free_net_client(qemu_get_subqueue(nic, i)->peer);
Michael S. Tsirkina083a892010-09-20 18:08:41 +0200359 }
360 }
361
Jason Wang1ceef9f2013-01-30 19:12:28 +0800362 for (i = queues - 1; i >= 0; i--) {
363 NetClientState *nc = qemu_get_subqueue(nic, i);
364
365 qemu_cleanup_net_client(nc);
366 qemu_free_net_client(nc);
367 }
Jason Wangf6b26cf2013-02-22 23:15:06 +0800368
369 g_free(nic);
Jan Kiszka1a609522009-06-24 14:42:31 +0200370}
371
Mark McLoughlin57f9ef12009-11-25 18:49:31 +0000372void qemu_foreach_nic(qemu_nic_foreach func, void *opaque)
373{
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100374 NetClientState *nc;
Mark McLoughlin57f9ef12009-11-25 18:49:31 +0000375
Stefan Hajnoczi94878992012-07-24 16:35:12 +0100376 QTAILQ_FOREACH(nc, &net_clients, next) {
Laszlo Ersek2be64a62012-07-17 16:17:12 +0200377 if (nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC) {
Jason Wang1ceef9f2013-01-30 19:12:28 +0800378 if (nc->queue_index == 0) {
379 func(qemu_get_nic(nc), opaque);
380 }
Mark McLoughlin57f9ef12009-11-25 18:49:31 +0000381 }
382 }
Mark McLoughlin57f9ef12009-11-25 18:49:31 +0000383}
384
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100385int qemu_can_send_packet(NetClientState *sender)
aliguori63a01ef2008-10-31 19:10:00 +0000386{
Stefan Hajnoczia005d072012-07-24 16:35:11 +0100387 if (!sender->peer) {
Mark McLoughlind80b9fc2009-10-08 19:58:24 +0100388 return 1;
389 }
390
Stefan Hajnoczia005d072012-07-24 16:35:11 +0100391 if (sender->peer->receive_disabled) {
392 return 0;
393 } else if (sender->peer->info->can_receive &&
394 !sender->peer->info->can_receive(sender->peer)) {
395 return 0;
aliguori63a01ef2008-10-31 19:10:00 +0000396 }
Vincent Palatin60c07d92011-03-02 17:25:02 -0500397 return 1;
aliguori63a01ef2008-10-31 19:10:00 +0000398}
399
Zhi Yong Wu86a77c32012-07-24 16:35:17 +0100400ssize_t qemu_deliver_packet(NetClientState *sender,
401 unsigned flags,
402 const uint8_t *data,
403 size_t size,
404 void *opaque)
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100405{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100406 NetClientState *nc = opaque;
Mark McLoughlin893379e2009-10-27 18:16:36 +0000407 ssize_t ret;
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100408
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100409 if (nc->link_down) {
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100410 return size;
411 }
412
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100413 if (nc->receive_disabled) {
Mark McLoughlin893379e2009-10-27 18:16:36 +0000414 return 0;
415 }
416
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100417 if (flags & QEMU_NET_PACKET_FLAG_RAW && nc->info->receive_raw) {
418 ret = nc->info->receive_raw(nc, data, size);
Mark McLoughlin893379e2009-10-27 18:16:36 +0000419 } else {
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100420 ret = nc->info->receive(nc, data, size);
Mark McLoughlin893379e2009-10-27 18:16:36 +0000421 }
422
423 if (ret == 0) {
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100424 nc->receive_disabled = 1;
Mark McLoughlin893379e2009-10-27 18:16:36 +0000425 };
426
427 return ret;
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100428}
429
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100430void qemu_purge_queued_packets(NetClientState *nc)
aliguori63a01ef2008-10-31 19:10:00 +0000431{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100432 if (!nc->peer) {
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100433 return;
434 }
435
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100436 qemu_net_queue_purge(nc->peer->send_queue, nc);
Mark McLoughlin8cad5512009-06-18 18:21:29 +0100437}
438
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100439void qemu_flush_queued_packets(NetClientState *nc)
Mark McLoughline94667b2009-04-29 11:48:12 +0100440{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100441 nc->receive_disabled = 0;
Mark McLoughlind80b9fc2009-10-08 19:58:24 +0100442
Luigi Rizzo199ee602013-02-05 17:53:31 +0100443 if (nc->peer && nc->peer->info->type == NET_CLIENT_OPTIONS_KIND_HUBPORT) {
444 if (net_hub_flush(nc->peer)) {
445 qemu_notify_event();
446 }
447 return;
448 }
Paolo Bonzini987a9b42012-08-09 16:45:55 +0200449 if (qemu_net_queue_flush(nc->send_queue)) {
450 /* We emptied the queue successfully, signal to the IO thread to repoll
451 * the file descriptor (for tap, for example).
452 */
453 qemu_notify_event();
454 }
Mark McLoughline94667b2009-04-29 11:48:12 +0100455}
456
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100457static ssize_t qemu_send_packet_async_with_flags(NetClientState *sender,
Mark McLoughlinca77d172009-10-22 17:43:41 +0100458 unsigned flags,
459 const uint8_t *buf, int size,
460 NetPacketSent *sent_cb)
aliguori764a4d12009-04-21 19:56:41 +0000461{
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100462 NetQueue *queue;
Mark McLoughline94667b2009-04-29 11:48:12 +0100463
Mark McLoughlinf3b6c7f2009-04-29 12:15:26 +0100464#ifdef DEBUG_NET
Mark McLoughlind80b9fc2009-10-08 19:58:24 +0100465 printf("qemu_send_packet_async:\n");
Mark McLoughlinf3b6c7f2009-04-29 12:15:26 +0100466 hex_dump(stdout, buf, size);
467#endif
468
Stefan Hajnoczia005d072012-07-24 16:35:11 +0100469 if (sender->link_down || !sender->peer) {
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100470 return size;
471 }
472
Stefan Hajnoczia005d072012-07-24 16:35:11 +0100473 queue = sender->peer->send_queue;
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100474
Mark McLoughlinca77d172009-10-22 17:43:41 +0100475 return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb);
476}
477
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100478ssize_t qemu_send_packet_async(NetClientState *sender,
Mark McLoughlinca77d172009-10-22 17:43:41 +0100479 const uint8_t *buf, int size,
480 NetPacketSent *sent_cb)
481{
482 return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE,
483 buf, size, sent_cb);
Mark McLoughlinf3b6c7f2009-04-29 12:15:26 +0100484}
485
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100486void qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size)
Mark McLoughlinf3b6c7f2009-04-29 12:15:26 +0100487{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100488 qemu_send_packet_async(nc, buf, size, NULL);
aliguori63a01ef2008-10-31 19:10:00 +0000489}
490
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100491ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size)
Mark McLoughlinca77d172009-10-22 17:43:41 +0100492{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100493 return qemu_send_packet_async_with_flags(nc, QEMU_NET_PACKET_FLAG_RAW,
Mark McLoughlinca77d172009-10-22 17:43:41 +0100494 buf, size, NULL);
495}
496
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100497static ssize_t nc_sendv_compat(NetClientState *nc, const struct iovec *iov,
aliguorifbe78f42008-12-17 19:13:11 +0000498 int iovcnt)
499{
500 uint8_t buffer[4096];
Benjamin Poirierce053662011-02-23 19:57:21 -0500501 size_t offset;
aliguorifbe78f42008-12-17 19:13:11 +0000502
Michael Tokarevdcf6f5e2012-03-11 18:05:12 +0400503 offset = iov_to_buf(iov, iovcnt, 0, buffer, sizeof(buffer));
aliguorifbe78f42008-12-17 19:13:11 +0000504
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100505 return nc->info->receive(nc, buffer, offset);
aliguorifbe78f42008-12-17 19:13:11 +0000506}
507
Zhi Yong Wu86a77c32012-07-24 16:35:17 +0100508ssize_t qemu_deliver_packet_iov(NetClientState *sender,
509 unsigned flags,
510 const struct iovec *iov,
511 int iovcnt,
512 void *opaque)
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100513{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100514 NetClientState *nc = opaque;
Stefan Hajnoczic67f5dc2012-08-17 21:16:42 +0100515 int ret;
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100516
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100517 if (nc->link_down) {
Benjamin Poirierce053662011-02-23 19:57:21 -0500518 return iov_size(iov, iovcnt);
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100519 }
520
Stefan Hajnoczic67f5dc2012-08-17 21:16:42 +0100521 if (nc->receive_disabled) {
522 return 0;
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100523 }
Stefan Hajnoczic67f5dc2012-08-17 21:16:42 +0100524
525 if (nc->info->receive_iov) {
526 ret = nc->info->receive_iov(nc, iov, iovcnt);
527 } else {
528 ret = nc_sendv_compat(nc, iov, iovcnt);
529 }
530
531 if (ret == 0) {
532 nc->receive_disabled = 1;
533 }
534
535 return ret;
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100536}
537
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100538ssize_t qemu_sendv_packet_async(NetClientState *sender,
Mark McLoughlinf3b6c7f2009-04-29 12:15:26 +0100539 const struct iovec *iov, int iovcnt,
540 NetPacketSent *sent_cb)
aliguorifbe78f42008-12-17 19:13:11 +0000541{
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100542 NetQueue *queue;
543
Stefan Hajnoczia005d072012-07-24 16:35:11 +0100544 if (sender->link_down || !sender->peer) {
Benjamin Poirierce053662011-02-23 19:57:21 -0500545 return iov_size(iov, iovcnt);
aliguorifbe78f42008-12-17 19:13:11 +0000546 }
547
Stefan Hajnoczia005d072012-07-24 16:35:11 +0100548 queue = sender->peer->send_queue;
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100549
Mark McLoughlinc0b8e492009-10-22 17:43:40 +0100550 return qemu_net_queue_send_iov(queue, sender,
551 QEMU_NET_PACKET_FLAG_NONE,
552 iov, iovcnt, sent_cb);
aliguorifbe78f42008-12-17 19:13:11 +0000553}
554
Mark McLoughlinf3b6c7f2009-04-29 12:15:26 +0100555ssize_t
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100556qemu_sendv_packet(NetClientState *nc, const struct iovec *iov, int iovcnt)
Mark McLoughlinf3b6c7f2009-04-29 12:15:26 +0100557{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100558 return qemu_sendv_packet_async(nc, iov, iovcnt, NULL);
Mark McLoughlinf3b6c7f2009-04-29 12:15:26 +0100559}
560
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100561NetClientState *qemu_find_netdev(const char *id)
aliguori63a01ef2008-10-31 19:10:00 +0000562{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100563 NetClientState *nc;
Mark McLoughlin5610c3a2009-10-08 19:58:23 +0100564
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100565 QTAILQ_FOREACH(nc, &net_clients, next) {
566 if (nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC)
Markus Armbruster85dde9a2011-06-16 18:45:37 +0200567 continue;
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100568 if (!strcmp(nc->name, id)) {
569 return nc;
Mark McLoughlin5869c4d2009-10-08 19:58:29 +0100570 }
571 }
572
573 return NULL;
574}
575
Jason Wang6c51ae72013-01-30 19:12:25 +0800576int qemu_find_net_clients_except(const char *id, NetClientState **ncs,
577 NetClientOptionsKind type, int max)
578{
579 NetClientState *nc;
580 int ret = 0;
581
582 QTAILQ_FOREACH(nc, &net_clients, next) {
583 if (nc->info->type == type) {
584 continue;
585 }
586 if (!strcmp(nc->name, id)) {
587 if (ret < max) {
588 ncs[ret] = nc;
589 }
590 ret++;
591 }
592 }
593
594 return ret;
595}
596
aliguori76970792009-02-11 15:20:03 +0000597static int nic_get_free_idx(void)
598{
599 int index;
600
601 for (index = 0; index < MAX_NICS; index++)
602 if (!nd_table[index].used)
603 return index;
604 return -1;
605}
606
Markus Armbruster07caea32009-09-25 03:53:51 +0200607int qemu_show_nic_models(const char *arg, const char *const *models)
608{
609 int i;
610
Peter Maydellc8057f92012-08-02 13:45:54 +0100611 if (!arg || !is_help_option(arg)) {
Markus Armbruster07caea32009-09-25 03:53:51 +0200612 return 0;
Peter Maydellc8057f92012-08-02 13:45:54 +0100613 }
Markus Armbruster07caea32009-09-25 03:53:51 +0200614
615 fprintf(stderr, "qemu: Supported NIC models: ");
616 for (i = 0 ; models[i]; i++)
617 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
618 return 1;
619}
620
aliguorid07f22c2009-01-13 19:03:57 +0000621void qemu_check_nic_model(NICInfo *nd, const char *model)
622{
623 const char *models[2];
624
625 models[0] = model;
626 models[1] = NULL;
627
Markus Armbruster07caea32009-09-25 03:53:51 +0200628 if (qemu_show_nic_models(nd->model, models))
629 exit(0);
630 if (qemu_find_nic_model(nd, models, model) < 0)
631 exit(1);
aliguorid07f22c2009-01-13 19:03:57 +0000632}
633
Markus Armbruster07caea32009-09-25 03:53:51 +0200634int qemu_find_nic_model(NICInfo *nd, const char * const *models,
635 const char *default_model)
aliguorid07f22c2009-01-13 19:03:57 +0000636{
Markus Armbruster07caea32009-09-25 03:53:51 +0200637 int i;
aliguorid07f22c2009-01-13 19:03:57 +0000638
639 if (!nd->model)
Anthony Liguori7267c092011-08-20 22:09:37 -0500640 nd->model = g_strdup(default_model);
aliguorid07f22c2009-01-13 19:03:57 +0000641
Markus Armbruster07caea32009-09-25 03:53:51 +0200642 for (i = 0 ; models[i]; i++) {
643 if (strcmp(nd->model, models[i]) == 0)
644 return i;
aliguorid07f22c2009-01-13 19:03:57 +0000645 }
646
Markus Armbruster6daf1942011-06-22 14:03:54 +0200647 error_report("Unsupported NIC model: %s", nd->model);
Markus Armbruster07caea32009-09-25 03:53:51 +0200648 return -1;
aliguorid07f22c2009-01-13 19:03:57 +0000649}
650
Laszlo Ersek1a0c0952012-07-17 16:17:21 +0200651static int net_init_nic(const NetClientOptions *opts, const char *name,
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100652 NetClientState *peer)
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100653{
654 int idx;
655 NICInfo *nd;
Laszlo Ersek2456f362012-07-17 16:17:14 +0200656 const NetLegacyNicOptions *nic;
657
658 assert(opts->kind == NET_CLIENT_OPTIONS_KIND_NIC);
659 nic = opts->nic;
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100660
661 idx = nic_get_free_idx();
662 if (idx == -1 || nb_nics >= MAX_NICS) {
Markus Armbruster1ecda022010-02-18 17:25:24 +0100663 error_report("Too Many NICs");
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100664 return -1;
665 }
666
667 nd = &nd_table[idx];
668
669 memset(nd, 0, sizeof(*nd));
670
Laszlo Ersek2456f362012-07-17 16:17:14 +0200671 if (nic->has_netdev) {
672 nd->netdev = qemu_find_netdev(nic->netdev);
Mark McLoughlin5869c4d2009-10-08 19:58:29 +0100673 if (!nd->netdev) {
Laszlo Ersek2456f362012-07-17 16:17:14 +0200674 error_report("netdev '%s' not found", nic->netdev);
Mark McLoughlin5869c4d2009-10-08 19:58:29 +0100675 return -1;
676 }
677 } else {
Stefan Hajnoczid33d93b2012-07-24 16:35:05 +0100678 assert(peer);
679 nd->netdev = peer;
Mark McLoughlin5869c4d2009-10-08 19:58:29 +0100680 }
Markus Armbrusterc64f50d2013-01-22 11:07:57 +0100681 nd->name = g_strdup(name);
Laszlo Ersek2456f362012-07-17 16:17:14 +0200682 if (nic->has_model) {
683 nd->model = g_strdup(nic->model);
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100684 }
Laszlo Ersek2456f362012-07-17 16:17:14 +0200685 if (nic->has_addr) {
686 nd->devaddr = g_strdup(nic->addr);
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100687 }
688
Laszlo Ersek2456f362012-07-17 16:17:14 +0200689 if (nic->has_macaddr &&
690 net_parse_macaddr(nd->macaddr.a, nic->macaddr) < 0) {
Markus Armbruster1ecda022010-02-18 17:25:24 +0100691 error_report("invalid syntax for ethernet address");
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100692 return -1;
693 }
Jan Kiszka6eed1852011-07-20 12:20:22 +0200694 qemu_macaddr_default_if_unset(&nd->macaddr);
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100695
Laszlo Ersek2456f362012-07-17 16:17:14 +0200696 if (nic->has_vectors) {
697 if (nic->vectors > 0x7ffffff) {
698 error_report("invalid # of vectors: %"PRIu32, nic->vectors);
699 return -1;
700 }
701 nd->nvectors = nic->vectors;
702 } else {
703 nd->nvectors = DEV_NVECTORS_UNSPECIFIED;
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100704 }
705
706 nd->used = 1;
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100707 nb_nics++;
708
709 return idx;
710}
711
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100712
Laszlo Ersek6687b792012-07-17 16:17:13 +0200713static int (* const net_client_init_fun[NET_CLIENT_OPTIONS_KIND_MAX])(
Laszlo Ersek1a0c0952012-07-17 16:17:21 +0200714 const NetClientOptions *opts,
Laszlo Ersek6687b792012-07-17 16:17:13 +0200715 const char *name,
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100716 NetClientState *peer) = {
Stefan Hajnoczif6c874e2012-07-24 16:35:04 +0100717 [NET_CLIENT_OPTIONS_KIND_NIC] = net_init_nic,
Mark McLoughlinec302ff2009-10-06 12:17:07 +0100718#ifdef CONFIG_SLIRP
Stefan Hajnoczif6c874e2012-07-24 16:35:04 +0100719 [NET_CLIENT_OPTIONS_KIND_USER] = net_init_slirp,
Mark McLoughlinec302ff2009-10-06 12:17:07 +0100720#endif
Stefan Hajnoczif6c874e2012-07-24 16:35:04 +0100721 [NET_CLIENT_OPTIONS_KIND_TAP] = net_init_tap,
722 [NET_CLIENT_OPTIONS_KIND_SOCKET] = net_init_socket,
Mark McLoughlindd510582009-10-06 12:17:10 +0100723#ifdef CONFIG_VDE
Stefan Hajnoczif6c874e2012-07-24 16:35:04 +0100724 [NET_CLIENT_OPTIONS_KIND_VDE] = net_init_vde,
Mark McLoughlindd510582009-10-06 12:17:10 +0100725#endif
Stefan Hajnoczif6c874e2012-07-24 16:35:04 +0100726 [NET_CLIENT_OPTIONS_KIND_DUMP] = net_init_dump,
Stefan Weil2944e4e2012-02-04 09:24:46 +0100727#ifdef CONFIG_NET_BRIDGE
Stefan Hajnoczif6c874e2012-07-24 16:35:04 +0100728 [NET_CLIENT_OPTIONS_KIND_BRIDGE] = net_init_bridge,
Laszlo Ersek6687b792012-07-17 16:17:13 +0200729#endif
Stefan Hajnoczif6c874e2012-07-24 16:35:04 +0100730 [NET_CLIENT_OPTIONS_KIND_HUBPORT] = net_init_hubport,
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100731};
732
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100733
Laszlo Ersek1a0c0952012-07-17 16:17:21 +0200734static int net_client_init1(const void *object, int is_netdev, Error **errp)
Laszlo Ersek6687b792012-07-17 16:17:13 +0200735{
736 union {
737 const Netdev *netdev;
738 const NetLegacy *net;
739 } u;
740 const NetClientOptions *opts;
741 const char *name;
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100742
Markus Armbruster5294e2c2010-03-25 17:22:38 +0100743 if (is_netdev) {
Laszlo Ersek6687b792012-07-17 16:17:13 +0200744 u.netdev = object;
745 opts = u.netdev->opts;
746 name = u.netdev->id;
747
748 switch (opts->kind) {
Mark McLoughlinf6b134a2009-10-08 19:58:27 +0100749#ifdef CONFIG_SLIRP
Laszlo Ersek6687b792012-07-17 16:17:13 +0200750 case NET_CLIENT_OPTIONS_KIND_USER:
Mark McLoughlinf6b134a2009-10-08 19:58:27 +0100751#endif
Laszlo Ersek6687b792012-07-17 16:17:13 +0200752 case NET_CLIENT_OPTIONS_KIND_TAP:
753 case NET_CLIENT_OPTIONS_KIND_SOCKET:
Mark McLoughlinf6b134a2009-10-08 19:58:27 +0100754#ifdef CONFIG_VDE
Laszlo Ersek6687b792012-07-17 16:17:13 +0200755 case NET_CLIENT_OPTIONS_KIND_VDE:
Mark McLoughlinf6b134a2009-10-08 19:58:27 +0100756#endif
Laszlo Ersek6687b792012-07-17 16:17:13 +0200757#ifdef CONFIG_NET_BRIDGE
758 case NET_CLIENT_OPTIONS_KIND_BRIDGE:
759#endif
Stefan Hajnoczif6c874e2012-07-24 16:35:04 +0100760 case NET_CLIENT_OPTIONS_KIND_HUBPORT:
Laszlo Ersek6687b792012-07-17 16:17:13 +0200761 break;
762
763 default:
Luiz Capitulino4559a1d2012-04-20 16:50:25 -0300764 error_set(errp, QERR_INVALID_PARAMETER_VALUE, "type",
765 "a netdev backend type");
Mark McLoughlinf6b134a2009-10-08 19:58:27 +0100766 return -1;
767 }
Laszlo Ersek6687b792012-07-17 16:17:13 +0200768 } else {
769 u.net = object;
770 opts = u.net->opts;
771 /* missing optional values have been initialized to "all bits zero" */
772 name = u.net->has_id ? u.net->id : u.net->name;
773 }
Mark McLoughlinf6b134a2009-10-08 19:58:27 +0100774
Laszlo Ersek6687b792012-07-17 16:17:13 +0200775 if (net_client_init_fun[opts->kind]) {
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100776 NetClientState *peer = NULL;
Laszlo Ersek6687b792012-07-17 16:17:13 +0200777
778 /* Do not add to a vlan if it's a -netdev or a nic with a netdev=
779 * parameter. */
780 if (!is_netdev &&
781 (opts->kind != NET_CLIENT_OPTIONS_KIND_NIC ||
782 !opts->nic->has_netdev)) {
Stefan Hajnoczid33d93b2012-07-24 16:35:05 +0100783 peer = net_hub_add_port(u.net->has_vlan ? u.net->vlan : 0, NULL);
Mark McLoughlinf6b134a2009-10-08 19:58:27 +0100784 }
Laszlo Ersek6687b792012-07-17 16:17:13 +0200785
Stefan Hajnoczid33d93b2012-07-24 16:35:05 +0100786 if (net_client_init_fun[opts->kind](opts, name, peer) < 0) {
Laszlo Ersek6687b792012-07-17 16:17:13 +0200787 /* TODO push error reporting into init() methods */
788 error_set(errp, QERR_DEVICE_INIT_FAILED,
789 NetClientOptionsKind_lookup[opts->kind]);
Mark McLoughlinf6b134a2009-10-08 19:58:27 +0100790 return -1;
791 }
792 }
Laszlo Ersek6687b792012-07-17 16:17:13 +0200793 return 0;
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100794}
795
Laszlo Ersek6687b792012-07-17 16:17:13 +0200796
797static void net_visit(Visitor *v, int is_netdev, void **object, Error **errp)
798{
799 if (is_netdev) {
800 visit_type_Netdev(v, (Netdev **)object, NULL, errp);
801 } else {
802 visit_type_NetLegacy(v, (NetLegacy **)object, NULL, errp);
803 }
804}
805
806
807int net_client_init(QemuOpts *opts, int is_netdev, Error **errp)
808{
809 void *object = NULL;
810 Error *err = NULL;
811 int ret = -1;
812
813 {
814 OptsVisitor *ov = opts_visitor_new(opts);
815
816 net_visit(opts_get_visitor(ov), is_netdev, &object, &err);
817 opts_visitor_cleanup(ov);
818 }
819
820 if (!err) {
Laszlo Ersek1a0c0952012-07-17 16:17:21 +0200821 ret = net_client_init1(object, is_netdev, &err);
Laszlo Ersek6687b792012-07-17 16:17:13 +0200822 }
823
824 if (object) {
825 QapiDeallocVisitor *dv = qapi_dealloc_visitor_new();
826
827 net_visit(qapi_dealloc_get_visitor(dv), is_netdev, &object, NULL);
828 qapi_dealloc_visitor_cleanup(dv);
829 }
830
831 error_propagate(errp, err);
832 return ret;
833}
834
835
aliguori6f338c32009-02-11 15:21:54 +0000836static int net_host_check_device(const char *device)
837{
838 int i;
aliguoribb9ea792009-04-21 19:56:28 +0000839 const char *valid_param_list[] = { "tap", "socket", "dump"
Stefan Weil2944e4e2012-02-04 09:24:46 +0100840#ifdef CONFIG_NET_BRIDGE
841 , "bridge"
842#endif
aliguori6f338c32009-02-11 15:21:54 +0000843#ifdef CONFIG_SLIRP
844 ,"user"
845#endif
846#ifdef CONFIG_VDE
847 ,"vde"
848#endif
849 };
850 for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) {
851 if (!strncmp(valid_param_list[i], device,
852 strlen(valid_param_list[i])))
853 return 1;
854 }
855
856 return 0;
857}
858
Luiz Capitulinof18c16d2009-08-28 15:27:14 -0300859void net_host_device_add(Monitor *mon, const QDict *qdict)
aliguori6f338c32009-02-11 15:21:54 +0000860{
Luiz Capitulinof18c16d2009-08-28 15:27:14 -0300861 const char *device = qdict_get_str(qdict, "device");
Mark McLoughlin7f1c9d22009-10-06 12:17:13 +0100862 const char *opts_str = qdict_get_try_str(qdict, "opts");
Luiz Capitulino4559a1d2012-04-20 16:50:25 -0300863 Error *local_err = NULL;
Mark McLoughlin7f1c9d22009-10-06 12:17:13 +0100864 QemuOpts *opts;
Luiz Capitulinof18c16d2009-08-28 15:27:14 -0300865
aliguori6f338c32009-02-11 15:21:54 +0000866 if (!net_host_check_device(device)) {
aliguori376253e2009-03-05 23:01:23 +0000867 monitor_printf(mon, "invalid host network device %s\n", device);
aliguori6f338c32009-02-11 15:21:54 +0000868 return;
869 }
Mark McLoughlin7f1c9d22009-10-06 12:17:13 +0100870
Gerd Hoffmann3329f072010-08-20 13:52:01 +0200871 opts = qemu_opts_parse(qemu_find_opts("net"), opts_str ? opts_str : "", 0);
Mark McLoughlin7f1c9d22009-10-06 12:17:13 +0100872 if (!opts) {
Mark McLoughlin7f1c9d22009-10-06 12:17:13 +0100873 return;
874 }
875
876 qemu_opt_set(opts, "type", device);
877
Luiz Capitulino4559a1d2012-04-20 16:50:25 -0300878 net_client_init(opts, 0, &local_err);
879 if (error_is_set(&local_err)) {
880 qerror_report_err(local_err);
881 error_free(local_err);
aliguori5c8be672009-04-21 19:56:32 +0000882 monitor_printf(mon, "adding host network device %s failed\n", device);
883 }
aliguori6f338c32009-02-11 15:21:54 +0000884}
885
Luiz Capitulinof18c16d2009-08-28 15:27:14 -0300886void net_host_device_remove(Monitor *mon, const QDict *qdict)
aliguori6f338c32009-02-11 15:21:54 +0000887{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100888 NetClientState *nc;
Luiz Capitulinof18c16d2009-08-28 15:27:14 -0300889 int vlan_id = qdict_get_int(qdict, "vlan_id");
890 const char *device = qdict_get_str(qdict, "device");
aliguori6f338c32009-02-11 15:21:54 +0000891
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100892 nc = net_hub_find_client_by_name(vlan_id, device);
893 if (!nc) {
aliguori6f338c32009-02-11 15:21:54 +0000894 return;
895 }
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100896 if (!net_host_check_device(nc->model)) {
aliguorie8f1f9d2009-04-21 19:56:08 +0000897 monitor_printf(mon, "invalid host network device %s\n", device);
898 return;
899 }
Stefan Hajnoczib20c6b92012-07-24 16:35:15 +0100900 qemu_del_net_client(nc);
aliguori6f338c32009-02-11 15:21:54 +0000901}
902
Luiz Capitulino928059a2012-04-18 17:34:15 -0300903void netdev_add(QemuOpts *opts, Error **errp)
904{
905 net_client_init(opts, 1, errp);
906}
907
908int qmp_netdev_add(Monitor *mon, const QDict *qdict, QObject **ret)
Markus Armbrusterae82d322010-03-25 17:22:40 +0100909{
Luiz Capitulino4e899782012-04-18 17:24:01 -0300910 Error *local_err = NULL;
Luiz Capitulino928059a2012-04-18 17:34:15 -0300911 QemuOptsList *opts_list;
Markus Armbrusterae82d322010-03-25 17:22:40 +0100912 QemuOpts *opts;
Markus Armbrusterae82d322010-03-25 17:22:40 +0100913
Luiz Capitulino928059a2012-04-18 17:34:15 -0300914 opts_list = qemu_find_opts_err("netdev", &local_err);
915 if (error_is_set(&local_err)) {
916 goto exit_err;
Markus Armbrusterae82d322010-03-25 17:22:40 +0100917 }
918
Luiz Capitulino928059a2012-04-18 17:34:15 -0300919 opts = qemu_opts_from_qdict(opts_list, qdict, &local_err);
920 if (error_is_set(&local_err)) {
921 goto exit_err;
922 }
923
924 netdev_add(opts, &local_err);
925 if (error_is_set(&local_err)) {
Yoshiaki Tamura410cbaf2010-06-21 10:41:36 +0900926 qemu_opts_del(opts);
Luiz Capitulino928059a2012-04-18 17:34:15 -0300927 goto exit_err;
Yoshiaki Tamura410cbaf2010-06-21 10:41:36 +0900928 }
929
Luiz Capitulino928059a2012-04-18 17:34:15 -0300930 return 0;
931
932exit_err:
933 qerror_report_err(local_err);
934 error_free(local_err);
935 return -1;
Markus Armbrusterae82d322010-03-25 17:22:40 +0100936}
937
Luiz Capitulino5f964152012-04-16 14:36:32 -0300938void qmp_netdev_del(const char *id, Error **errp)
Markus Armbrusterae82d322010-03-25 17:22:40 +0100939{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100940 NetClientState *nc;
Stefan Hajnoczi645c9492012-10-24 14:34:12 +0200941 QemuOpts *opts;
Markus Armbrusterae82d322010-03-25 17:22:40 +0100942
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100943 nc = qemu_find_netdev(id);
944 if (!nc) {
Luiz Capitulino5f964152012-04-16 14:36:32 -0300945 error_set(errp, QERR_DEVICE_NOT_FOUND, id);
946 return;
Markus Armbrusterae82d322010-03-25 17:22:40 +0100947 }
Luiz Capitulino5f964152012-04-16 14:36:32 -0300948
Stefan Hajnoczi645c9492012-10-24 14:34:12 +0200949 opts = qemu_opts_find(qemu_find_opts_err("netdev", NULL), id);
950 if (!opts) {
951 error_setg(errp, "Device '%s' is not a netdev", id);
952 return;
953 }
954
Stefan Hajnoczib20c6b92012-07-24 16:35:15 +0100955 qemu_del_net_client(nc);
Stefan Hajnoczi645c9492012-10-24 14:34:12 +0200956 qemu_opts_del(opts);
Markus Armbrusterae82d322010-03-25 17:22:40 +0100957}
958
Zhi Yong Wu1a859592012-07-24 16:35:16 +0100959void print_net_client(Monitor *mon, NetClientState *nc)
Jan Kiszka44e798d2011-07-20 12:20:21 +0200960{
Jason Wang1ceef9f2013-01-30 19:12:28 +0800961 monitor_printf(mon, "%s: index=%d,type=%s,%s\n", nc->name,
962 nc->queue_index,
963 NetClientOptionsKind_lookup[nc->info->type],
964 nc->info_str);
Jan Kiszka44e798d2011-07-20 12:20:21 +0200965}
966
Wenchao Xia84f2d0e2013-01-14 14:06:25 +0800967void do_info_network(Monitor *mon, const QDict *qdict)
aliguori63a01ef2008-10-31 19:10:00 +0000968{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100969 NetClientState *nc, *peer;
Laszlo Ersek2be64a62012-07-17 16:17:12 +0200970 NetClientOptionsKind type;
aliguori63a01ef2008-10-31 19:10:00 +0000971
Zhi Yong Wu1a859592012-07-24 16:35:16 +0100972 net_hub_info(mon);
Mark McLoughlin5610c3a2009-10-08 19:58:23 +0100973
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100974 QTAILQ_FOREACH(nc, &net_clients, next) {
975 peer = nc->peer;
976 type = nc->info->type;
Zhi Yong Wu1a859592012-07-24 16:35:16 +0100977
978 /* Skip if already printed in hub info */
979 if (net_hub_id_for_client(nc, NULL) == 0) {
980 continue;
Mark McLoughlin5610c3a2009-10-08 19:58:23 +0100981 }
Zhi Yong Wu1a859592012-07-24 16:35:16 +0100982
Laszlo Ersek2be64a62012-07-17 16:17:12 +0200983 if (!peer || type == NET_CLIENT_OPTIONS_KIND_NIC) {
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100984 print_net_client(mon, nc);
Jan Kiszka19061e62011-07-20 12:20:19 +0200985 } /* else it's a netdev connected to a NIC, printed with the NIC */
Laszlo Ersek2be64a62012-07-17 16:17:12 +0200986 if (peer && type == NET_CLIENT_OPTIONS_KIND_NIC) {
Zhi Yong Wu1a859592012-07-24 16:35:16 +0100987 monitor_printf(mon, " \\ ");
Jan Kiszka44e798d2011-07-20 12:20:21 +0200988 print_net_client(mon, peer);
Markus Armbrustera0104e02010-02-11 14:45:01 +0100989 }
Markus Armbrustera0104e02010-02-11 14:45:01 +0100990 }
aliguori63a01ef2008-10-31 19:10:00 +0000991}
992
Luiz Capitulino4b371562011-11-23 13:11:55 -0200993void qmp_set_link(const char *name, bool up, Error **errp)
aliguori436e5e52009-01-08 19:44:06 +0000994{
Jason Wang1ceef9f2013-01-30 19:12:28 +0800995 NetClientState *ncs[MAX_QUEUE_NUM];
996 NetClientState *nc;
997 int queues, i;
aliguori436e5e52009-01-08 19:44:06 +0000998
Jason Wang1ceef9f2013-01-30 19:12:28 +0800999 queues = qemu_find_net_clients_except(name, ncs,
1000 NET_CLIENT_OPTIONS_KIND_MAX,
1001 MAX_QUEUE_NUM);
1002
1003 if (queues == 0) {
Luiz Capitulino4b371562011-11-23 13:11:55 -02001004 error_set(errp, QERR_DEVICE_NOT_FOUND, name);
1005 return;
aliguori436e5e52009-01-08 19:44:06 +00001006 }
Jason Wang1ceef9f2013-01-30 19:12:28 +08001007 nc = ncs[0];
aliguori436e5e52009-01-08 19:44:06 +00001008
Jason Wang1ceef9f2013-01-30 19:12:28 +08001009 for (i = 0; i < queues; i++) {
1010 ncs[i]->link_down = !up;
1011 }
aliguori436e5e52009-01-08 19:44:06 +00001012
Stefan Hajnoczi35277d12012-07-24 16:35:14 +01001013 if (nc->info->link_status_changed) {
1014 nc->info->link_status_changed(nc);
Mark McLoughlin665a3b02009-11-25 18:49:30 +00001015 }
Michael S. Tsirkinab1cbe12011-02-09 18:45:04 +02001016
1017 /* Notify peer. Don't update peer link status: this makes it possible to
1018 * disconnect from host network without notifying the guest.
1019 * FIXME: is disconnected link status change operation useful?
1020 *
1021 * Current behaviour is compatible with qemu vlans where there could be
1022 * multiple clients that can still communicate with each other in
1023 * disconnected mode. For now maintain this compatibility. */
Stefan Hajnoczi35277d12012-07-24 16:35:14 +01001024 if (nc->peer && nc->peer->info->link_status_changed) {
1025 nc->peer->info->link_status_changed(nc->peer);
Michael S. Tsirkinab1cbe12011-02-09 18:45:04 +02001026 }
aliguori436e5e52009-01-08 19:44:06 +00001027}
1028
aliguori63a01ef2008-10-31 19:10:00 +00001029void net_cleanup(void)
1030{
Jason Wang1ceef9f2013-01-30 19:12:28 +08001031 NetClientState *nc;
aliguori63a01ef2008-10-31 19:10:00 +00001032
Jason Wang1ceef9f2013-01-30 19:12:28 +08001033 /* We may del multiple entries during qemu_del_net_client(),
1034 * so QTAILQ_FOREACH_SAFE() is also not safe here.
1035 */
1036 while (!QTAILQ_EMPTY(&net_clients)) {
1037 nc = QTAILQ_FIRST(&net_clients);
Jason Wang948ecf22013-01-30 19:12:24 +08001038 if (nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC) {
1039 qemu_del_nic(qemu_get_nic(nc));
1040 } else {
1041 qemu_del_net_client(nc);
1042 }
Mark McLoughlin577c4af2009-10-08 19:58:28 +01001043 }
aliguori63a01ef2008-10-31 19:10:00 +00001044}
1045
Markus Armbruster668680f2010-02-11 14:44:58 +01001046void net_check_clients(void)
aliguori63a01ef2008-10-31 19:10:00 +00001047{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +01001048 NetClientState *nc;
Peter Maydell48e2faf2011-05-20 16:50:01 +01001049 int i;
aliguori63a01ef2008-10-31 19:10:00 +00001050
Peter Maydell641f6ea2011-05-20 16:50:00 +01001051 /* Don't warn about the default network setup that you get if
1052 * no command line -net or -netdev options are specified. There
1053 * are two cases that we would otherwise complain about:
1054 * (1) board doesn't support a NIC but the implicit "-net nic"
1055 * requested one
1056 * (2) CONFIG_SLIRP not set, in which case the implicit "-net nic"
1057 * sets up a nic that isn't connected to anything.
1058 */
1059 if (default_net) {
1060 return;
1061 }
1062
Stefan Hajnoczi81017642012-07-24 16:35:07 +01001063 net_hub_check_clients();
Tristan Gingoldac60cc12011-03-15 14:20:54 +01001064
Stefan Hajnoczi35277d12012-07-24 16:35:14 +01001065 QTAILQ_FOREACH(nc, &net_clients, next) {
1066 if (!nc->peer) {
Markus Armbrusterefe32fd2010-02-11 14:45:00 +01001067 fprintf(stderr, "Warning: %s %s has no peer\n",
Stefan Hajnoczi35277d12012-07-24 16:35:14 +01001068 nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC ?
1069 "nic" : "netdev", nc->name);
Markus Armbrusterefe32fd2010-02-11 14:45:00 +01001070 }
1071 }
Peter Maydell48e2faf2011-05-20 16:50:01 +01001072
1073 /* Check that all NICs requested via -net nic actually got created.
1074 * NICs created via -device don't need to be checked here because
1075 * they are always instantiated.
1076 */
1077 for (i = 0; i < MAX_NICS; i++) {
1078 NICInfo *nd = &nd_table[i];
1079 if (nd->used && !nd->instantiated) {
1080 fprintf(stderr, "Warning: requested NIC (%s, model %s) "
1081 "was not created (not supported by this machine?)\n",
1082 nd->name ? nd->name : "anonymous",
1083 nd->model ? nd->model : "unspecified");
1084 }
1085 }
aliguori63a01ef2008-10-31 19:10:00 +00001086}
Mark McLoughlindc1c9fe2009-10-06 12:17:16 +01001087
1088static int net_init_client(QemuOpts *opts, void *dummy)
1089{
Luiz Capitulino4559a1d2012-04-20 16:50:25 -03001090 Error *local_err = NULL;
1091
1092 net_client_init(opts, 0, &local_err);
1093 if (error_is_set(&local_err)) {
1094 qerror_report_err(local_err);
1095 error_free(local_err);
Mark McLoughlinc1671a02009-10-12 09:52:00 +01001096 return -1;
Luiz Capitulino4559a1d2012-04-20 16:50:25 -03001097 }
1098
Mark McLoughlinc1671a02009-10-12 09:52:00 +01001099 return 0;
Mark McLoughlinf6b134a2009-10-08 19:58:27 +01001100}
1101
1102static int net_init_netdev(QemuOpts *opts, void *dummy)
1103{
Luiz Capitulino4559a1d2012-04-20 16:50:25 -03001104 Error *local_err = NULL;
1105 int ret;
1106
1107 ret = net_client_init(opts, 1, &local_err);
1108 if (error_is_set(&local_err)) {
1109 qerror_report_err(local_err);
1110 error_free(local_err);
1111 return -1;
1112 }
1113
1114 return ret;
Mark McLoughlindc1c9fe2009-10-06 12:17:16 +01001115}
1116
1117int net_init_clients(void)
1118{
Gerd Hoffmann3329f072010-08-20 13:52:01 +02001119 QemuOptsList *net = qemu_find_opts("net");
1120
Gerd Hoffmanncb4522c2009-12-08 13:11:47 +01001121 if (default_net) {
Mark McLoughlindc1c9fe2009-10-06 12:17:16 +01001122 /* if no clients, we use a default config */
Gerd Hoffmann3329f072010-08-20 13:52:01 +02001123 qemu_opts_set(net, NULL, "type", "nic");
Mark McLoughlindc1c9fe2009-10-06 12:17:16 +01001124#ifdef CONFIG_SLIRP
Gerd Hoffmann3329f072010-08-20 13:52:01 +02001125 qemu_opts_set(net, NULL, "type", "user");
Mark McLoughlindc1c9fe2009-10-06 12:17:16 +01001126#endif
1127 }
1128
Stefan Hajnoczi94878992012-07-24 16:35:12 +01001129 QTAILQ_INIT(&net_clients);
Mark McLoughlin5610c3a2009-10-08 19:58:23 +01001130
Gerd Hoffmann3329f072010-08-20 13:52:01 +02001131 if (qemu_opts_foreach(qemu_find_opts("netdev"), net_init_netdev, NULL, 1) == -1)
Mark McLoughlinf6b134a2009-10-08 19:58:27 +01001132 return -1;
1133
Gerd Hoffmann3329f072010-08-20 13:52:01 +02001134 if (qemu_opts_foreach(net, net_init_client, NULL, 1) == -1) {
Mark McLoughlindc1c9fe2009-10-06 12:17:16 +01001135 return -1;
1136 }
1137
Mark McLoughlindc1c9fe2009-10-06 12:17:16 +01001138 return 0;
1139}
1140
Mark McLoughlin7f161aa2009-10-08 19:58:25 +01001141int net_client_parse(QemuOptsList *opts_list, const char *optarg)
Mark McLoughlindc1c9fe2009-10-06 12:17:16 +01001142{
Juan Quintelaa3a766e2009-10-07 23:44:15 +02001143#if defined(CONFIG_SLIRP)
Mark McLoughlin68ac40d2009-11-25 18:48:54 +00001144 int ret;
1145 if (net_slirp_parse_legacy(opts_list, optarg, &ret)) {
Mark McLoughlindc1c9fe2009-10-06 12:17:16 +01001146 return ret;
1147 }
Juan Quintelaa3a766e2009-10-07 23:44:15 +02001148#endif
Mark McLoughlin68ac40d2009-11-25 18:48:54 +00001149
Markus Armbruster8212c642010-02-10 19:52:18 +01001150 if (!qemu_opts_parse(opts_list, optarg, 1)) {
Mark McLoughlindc1c9fe2009-10-06 12:17:16 +01001151 return -1;
1152 }
1153
Gerd Hoffmanncb4522c2009-12-08 13:11:47 +01001154 default_net = 0;
Mark McLoughlindc1c9fe2009-10-06 12:17:16 +01001155 return 0;
1156}
Jason Wang7fc8d912012-03-05 11:08:50 +08001157
1158/* From FreeBSD */
1159/* XXX: optimize */
1160unsigned compute_mcast_idx(const uint8_t *ep)
1161{
1162 uint32_t crc;
1163 int carry, i, j;
1164 uint8_t b;
1165
1166 crc = 0xffffffff;
1167 for (i = 0; i < 6; i++) {
1168 b = *ep++;
1169 for (j = 0; j < 8; j++) {
1170 carry = ((crc & 0x80000000L) ? 1 : 0) ^ (b & 0x01);
1171 crc <<= 1;
1172 b >>= 1;
1173 if (carry) {
1174 crc = ((crc ^ POLYNOMIAL) | carry);
1175 }
1176 }
1177 }
1178 return crc >> 26;
1179}
Paolo Bonzini4d454572012-11-26 16:03:42 +01001180
1181QemuOptsList qemu_netdev_opts = {
1182 .name = "netdev",
1183 .implied_opt_name = "type",
1184 .head = QTAILQ_HEAD_INITIALIZER(qemu_netdev_opts.head),
1185 .desc = {
1186 /*
1187 * no elements => accept any params
1188 * validation will happen later
1189 */
1190 { /* end of list */ }
1191 },
1192};
1193
1194QemuOptsList qemu_net_opts = {
1195 .name = "net",
1196 .implied_opt_name = "type",
1197 .head = QTAILQ_HEAD_INITIALIZER(qemu_net_opts.head),
1198 .desc = {
1199 /*
1200 * no elements => accept any params
1201 * validation will happen later
1202 */
1203 { /* end of list */ }
1204 },
1205};