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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"
Dmitry Krivenokd60b20c2013-10-21 12:08:44 +040030#include "net/eth.h"
Paolo Bonzinifd9400b2012-10-24 11:27:28 +020031#include "util.h"
Paolo Bonzinia245fc12012-09-17 18:43:51 +020032
Paolo Bonzini83c90892012-12-17 18:19:49 +010033#include "monitor/monitor.h"
Mark McLoughlin1df49e02009-11-25 18:48:58 +000034#include "qemu-common.h"
Markus Armbrustercc7a8ea2015-03-17 17:22:46 +010035#include "qapi/qmp/qerror.h"
Markus Armbrusterd49b6832015-03-17 18:29:20 +010036#include "qemu/error-report.h"
Paolo Bonzini1de7afc2012-12-17 18:20:00 +010037#include "qemu/sockets.h"
38#include "qemu/config-file.h"
Luiz Capitulino4b371562011-11-23 13:11:55 -020039#include "qmp-commands.h"
Amit Shah75422b02010-02-25 17:24:43 +053040#include "hw/qdev.h"
Paolo Bonzini1de7afc2012-12-17 18:20:00 +010041#include "qemu/iov.h"
Alex Bligh6a1751b2013-08-21 16:02:47 +010042#include "qemu/main-loop.h"
Laszlo Ersek6687b792012-07-17 16:17:13 +020043#include "qapi-visit.h"
44#include "qapi/opts-visitor.h"
Paolo Bonzini7b1b5d12012-12-17 18:19:43 +010045#include "qapi/dealloc-visitor.h"
zhanghailiange1d64c02014-08-26 16:06:17 +080046#include "sysemu/sysemu.h"
Yang Hongyangfdccce42015-10-07 11:52:14 +080047#include "net/filter.h"
blueswir1511d2b12009-03-07 15:32:56 +000048
Stefan Weil2944e4e2012-02-04 09:24:46 +010049/* Net bridge is currently not supported for W32. */
50#if !defined(_WIN32)
51# define CONFIG_NET_BRIDGE
52#endif
53
Michael S. Tsirkinca77d852014-09-04 11:39:13 +030054static VMChangeStateEntry *net_change_state_entry;
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +010055static QTAILQ_HEAD(, NetClientState) net_clients;
aliguori63a01ef2008-10-31 19:10:00 +000056
Hani Benhabiles84007e82014-05-27 23:39:33 +010057const char *host_net_devices[] = {
58 "tap",
59 "socket",
60 "dump",
61#ifdef CONFIG_NET_BRIDGE
62 "bridge",
63#endif
Stefan Hajnoczi027a2472015-05-27 17:16:48 +010064#ifdef CONFIG_NETMAP
65 "netmap",
66#endif
Hani Benhabiles84007e82014-05-27 23:39:33 +010067#ifdef CONFIG_SLIRP
68 "user",
69#endif
70#ifdef CONFIG_VDE
71 "vde",
72#endif
Nikolay Nikolaev03ce5742014-06-10 13:02:16 +030073 "vhost-user",
Hani Benhabiles84007e82014-05-27 23:39:33 +010074 NULL,
75};
76
Gerd Hoffmanncb4522c2009-12-08 13:11:47 +010077int default_net = 1;
78
aliguori63a01ef2008-10-31 19:10:00 +000079/***********************************************************/
80/* network device redirectors */
81
Mark McLoughlin68ac40d2009-11-25 18:48:54 +000082#if defined(DEBUG_NET)
aliguori63a01ef2008-10-31 19:10:00 +000083static void hex_dump(FILE *f, const uint8_t *buf, int size)
84{
85 int len, i, j, c;
86
87 for(i=0;i<size;i+=16) {
88 len = size - i;
89 if (len > 16)
90 len = 16;
91 fprintf(f, "%08x ", i);
92 for(j=0;j<16;j++) {
93 if (j < len)
94 fprintf(f, " %02x", buf[i+j]);
95 else
96 fprintf(f, " ");
97 }
98 fprintf(f, " ");
99 for(j=0;j<len;j++) {
100 c = buf[i+j];
101 if (c < ' ' || c > '~')
102 c = '.';
103 fprintf(f, "%c", c);
104 }
105 fprintf(f, "\n");
106 }
107}
108#endif
109
aliguori63a01ef2008-10-31 19:10:00 +0000110static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
111{
112 const char *p, *p1;
113 int len;
114 p = *pp;
115 p1 = strchr(p, sep);
116 if (!p1)
117 return -1;
118 len = p1 - p;
119 p1++;
120 if (buf_size > 0) {
121 if (len > buf_size - 1)
122 len = buf_size - 1;
123 memcpy(buf, p, len);
124 buf[len] = '\0';
125 }
126 *pp = p1;
127 return 0;
128}
129
aliguori63a01ef2008-10-31 19:10:00 +0000130int parse_host_port(struct sockaddr_in *saddr, const char *str)
131{
132 char buf[512];
133 struct hostent *he;
134 const char *p, *r;
135 int port;
136
137 p = str;
138 if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
139 return -1;
140 saddr->sin_family = AF_INET;
141 if (buf[0] == '\0') {
142 saddr->sin_addr.s_addr = 0;
143 } else {
blueswir1cd390082008-11-16 13:53:32 +0000144 if (qemu_isdigit(buf[0])) {
aliguori63a01ef2008-10-31 19:10:00 +0000145 if (!inet_aton(buf, &saddr->sin_addr))
146 return -1;
147 } else {
148 if ((he = gethostbyname(buf)) == NULL)
149 return - 1;
150 saddr->sin_addr = *(struct in_addr *)he->h_addr;
151 }
152 }
153 port = strtol(p, (char **)&r, 0);
154 if (r == p)
155 return -1;
156 saddr->sin_port = htons(port);
157 return 0;
158}
159
Scott Feldman890ee6a2015-03-13 21:09:25 -0700160char *qemu_mac_strdup_printf(const uint8_t *macaddr)
161{
162 return g_strdup_printf("%.2x:%.2x:%.2x:%.2x:%.2x:%.2x",
163 macaddr[0], macaddr[1], macaddr[2],
164 macaddr[3], macaddr[4], macaddr[5]);
165}
166
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100167void qemu_format_nic_info_str(NetClientState *nc, uint8_t macaddr[6])
aliguori7cb7434b2009-01-07 17:46:21 +0000168{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100169 snprintf(nc->info_str, sizeof(nc->info_str),
aliguori4dda4062009-01-08 19:01:37 +0000170 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100171 nc->model,
aliguori7cb7434b2009-01-07 17:46:21 +0000172 macaddr[0], macaddr[1], macaddr[2],
173 macaddr[3], macaddr[4], macaddr[5]);
174}
175
Shannon Zhao2bc22a52015-05-21 17:44:48 +0800176static int mac_table[256] = {0};
177
178static void qemu_macaddr_set_used(MACAddr *macaddr)
179{
180 int index;
181
182 for (index = 0x56; index < 0xFF; index++) {
183 if (macaddr->a[5] == index) {
184 mac_table[index]++;
185 }
186 }
187}
188
189static void qemu_macaddr_set_free(MACAddr *macaddr)
190{
191 int index;
192 static const MACAddr base = { .a = { 0x52, 0x54, 0x00, 0x12, 0x34, 0 } };
193
194 if (memcmp(macaddr->a, &base.a, (sizeof(base.a) - 1)) != 0) {
195 return;
196 }
197 for (index = 0x56; index < 0xFF; index++) {
198 if (macaddr->a[5] == index) {
199 mac_table[index]--;
200 }
201 }
202}
203
204static int qemu_macaddr_get_free(void)
205{
206 int index;
207
208 for (index = 0x56; index < 0xFF; index++) {
209 if (mac_table[index] == 0) {
210 return index;
211 }
212 }
213
214 return -1;
215}
216
Gerd Hoffmann76d32cb2009-10-21 15:25:22 +0200217void qemu_macaddr_default_if_unset(MACAddr *macaddr)
218{
Gerd Hoffmann76d32cb2009-10-21 15:25:22 +0200219 static const MACAddr zero = { .a = { 0,0,0,0,0,0 } };
Shannon Zhao2bc22a52015-05-21 17:44:48 +0800220 static const MACAddr base = { .a = { 0x52, 0x54, 0x00, 0x12, 0x34, 0 } };
Gerd Hoffmann76d32cb2009-10-21 15:25:22 +0200221
Shannon Zhao2bc22a52015-05-21 17:44:48 +0800222 if (memcmp(macaddr, &zero, sizeof(zero)) != 0) {
223 if (memcmp(macaddr->a, &base.a, (sizeof(base.a) - 1)) != 0) {
224 return;
225 } else {
226 qemu_macaddr_set_used(macaddr);
227 return;
228 }
229 }
230
Gerd Hoffmann76d32cb2009-10-21 15:25:22 +0200231 macaddr->a[0] = 0x52;
232 macaddr->a[1] = 0x54;
233 macaddr->a[2] = 0x00;
234 macaddr->a[3] = 0x12;
235 macaddr->a[4] = 0x34;
Shannon Zhao2bc22a52015-05-21 17:44:48 +0800236 macaddr->a[5] = qemu_macaddr_get_free();
237 qemu_macaddr_set_used(macaddr);
Gerd Hoffmann76d32cb2009-10-21 15:25:22 +0200238}
239
Stefan Hajnoczid33d93b2012-07-24 16:35:05 +0100240/**
241 * Generate a name for net client
242 *
Amos Kongc9635302013-04-15 18:55:19 +0800243 * Only net clients created with the legacy -net option and NICs need this.
Stefan Hajnoczid33d93b2012-07-24 16:35:05 +0100244 */
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100245static char *assign_name(NetClientState *nc1, const char *model)
aliguori676cff22009-01-07 17:43:44 +0000246{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100247 NetClientState *nc;
aliguori676cff22009-01-07 17:43:44 +0000248 int id = 0;
249
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100250 QTAILQ_FOREACH(nc, &net_clients, next) {
251 if (nc == nc1) {
Stefan Hajnoczid33d93b2012-07-24 16:35:05 +0100252 continue;
Mark McLoughlin5610c3a2009-10-08 19:58:23 +0100253 }
Amos Kongc9635302013-04-15 18:55:19 +0800254 if (strcmp(nc->model, model) == 0) {
Markus Armbruster53e51d82011-06-16 18:45:36 +0200255 id++;
256 }
257 }
258
Hani Benhabiles4bf2c132014-01-09 19:34:27 +0100259 return g_strdup_printf("%s.%d", model, id);
aliguori676cff22009-01-07 17:43:44 +0000260}
261
Jason Wangf7860452013-01-30 19:12:27 +0800262static void qemu_net_client_destructor(NetClientState *nc)
263{
264 g_free(nc);
265}
266
Jason Wang18a15412013-01-30 19:12:26 +0800267static void qemu_net_client_setup(NetClientState *nc,
268 NetClientInfo *info,
269 NetClientState *peer,
270 const char *model,
Jason Wangf7860452013-01-30 19:12:27 +0800271 const char *name,
272 NetClientDestructor *destructor)
aliguori63a01ef2008-10-31 19:10:00 +0000273{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100274 nc->info = info;
275 nc->model = g_strdup(model);
Mark McLoughlin45460d12009-11-25 18:49:02 +0000276 if (name) {
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100277 nc->name = g_strdup(name);
Mark McLoughlin45460d12009-11-25 18:49:02 +0000278 } else {
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100279 nc->name = assign_name(nc, model);
Mark McLoughlin45460d12009-11-25 18:49:02 +0000280 }
aliguori63a01ef2008-10-31 19:10:00 +0000281
Stefan Hajnocziab5f3f82012-07-24 16:35:08 +0100282 if (peer) {
283 assert(!peer->peer);
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100284 nc->peer = peer;
285 peer->peer = nc;
Mark McLoughlind80b9fc2009-10-08 19:58:24 +0100286 }
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100287 QTAILQ_INSERT_TAIL(&net_clients, nc, next);
Mark McLoughlin5610c3a2009-10-08 19:58:23 +0100288
Yang Hongyang3e033a42015-10-07 11:52:17 +0800289 nc->incoming_queue = qemu_new_net_queue(qemu_deliver_packet_iov, nc);
Jason Wangf7860452013-01-30 19:12:27 +0800290 nc->destructor = destructor;
Yang Hongyangfdccce42015-10-07 11:52:14 +0800291 QTAILQ_INIT(&nc->filters);
Jason Wang18a15412013-01-30 19:12:26 +0800292}
293
294NetClientState *qemu_new_net_client(NetClientInfo *info,
295 NetClientState *peer,
296 const char *model,
297 const char *name)
298{
299 NetClientState *nc;
300
301 assert(info->size >= sizeof(NetClientState));
302
303 nc = g_malloc0(info->size);
Jason Wangf7860452013-01-30 19:12:27 +0800304 qemu_net_client_setup(nc, info, peer, model, name,
305 qemu_net_client_destructor);
Jason Wang18a15412013-01-30 19:12:26 +0800306
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100307 return nc;
aliguori63a01ef2008-10-31 19:10:00 +0000308}
309
Mark McLoughlinebef2c02009-11-25 18:49:10 +0000310NICState *qemu_new_nic(NetClientInfo *info,
311 NICConf *conf,
312 const char *model,
313 const char *name,
314 void *opaque)
315{
Jason Wang1ceef9f2013-01-30 19:12:28 +0800316 NetClientState **peers = conf->peers.ncs;
Mark McLoughlinebef2c02009-11-25 18:49:10 +0000317 NICState *nic;
Jiri Pirko575a1c02014-05-26 12:04:08 +0200318 int i, queues = MAX(1, conf->peers.queues);
Mark McLoughlinebef2c02009-11-25 18:49:10 +0000319
Laszlo Ersek2be64a62012-07-17 16:17:12 +0200320 assert(info->type == NET_CLIENT_OPTIONS_KIND_NIC);
Mark McLoughlinebef2c02009-11-25 18:49:10 +0000321 assert(info->size >= sizeof(NICState));
322
Jason Wangf6b26cf2013-02-22 23:15:06 +0800323 nic = g_malloc0(info->size + sizeof(NetClientState) * queues);
324 nic->ncs = (void *)nic + info->size;
Mark McLoughlinebef2c02009-11-25 18:49:10 +0000325 nic->conf = conf;
326 nic->opaque = opaque;
327
Jason Wangf6b26cf2013-02-22 23:15:06 +0800328 for (i = 0; i < queues; i++) {
329 qemu_net_client_setup(&nic->ncs[i], info, peers[i], model, name,
Jason Wang1ceef9f2013-01-30 19:12:28 +0800330 NULL);
331 nic->ncs[i].queue_index = i;
332 }
333
Mark McLoughlinebef2c02009-11-25 18:49:10 +0000334 return nic;
335}
336
Jason Wang1ceef9f2013-01-30 19:12:28 +0800337NetClientState *qemu_get_subqueue(NICState *nic, int queue_index)
338{
Jason Wangf6b26cf2013-02-22 23:15:06 +0800339 return nic->ncs + queue_index;
Jason Wang1ceef9f2013-01-30 19:12:28 +0800340}
341
Jason Wangb356f762013-01-30 19:12:22 +0800342NetClientState *qemu_get_queue(NICState *nic)
343{
Jason Wang1ceef9f2013-01-30 19:12:28 +0800344 return qemu_get_subqueue(nic, 0);
Jason Wangb356f762013-01-30 19:12:22 +0800345}
346
Jason Wangcc1f0f42013-01-30 19:12:23 +0800347NICState *qemu_get_nic(NetClientState *nc)
348{
Jason Wang1ceef9f2013-01-30 19:12:28 +0800349 NetClientState *nc0 = nc - nc->queue_index;
350
Jason Wangf6b26cf2013-02-22 23:15:06 +0800351 return (NICState *)((void *)nc0 - nc->info->size);
Jason Wangcc1f0f42013-01-30 19:12:23 +0800352}
353
354void *qemu_get_nic_opaque(NetClientState *nc)
355{
356 NICState *nic = qemu_get_nic(nc);
357
358 return nic->opaque;
359}
360
Stefan Hajnoczib20c6b92012-07-24 16:35:15 +0100361static void qemu_cleanup_net_client(NetClientState *nc)
aliguori63a01ef2008-10-31 19:10:00 +0000362{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100363 QTAILQ_REMOVE(&net_clients, nc, next);
aliguori63a01ef2008-10-31 19:10:00 +0000364
Andreas Färbercc2a9042013-02-12 23:16:06 +0100365 if (nc->info->cleanup) {
366 nc->info->cleanup(nc);
367 }
Michael S. Tsirkina083a892010-09-20 18:08:41 +0200368}
Mark McLoughlin5610c3a2009-10-08 19:58:23 +0100369
Stefan Hajnoczib20c6b92012-07-24 16:35:15 +0100370static void qemu_free_net_client(NetClientState *nc)
Michael S. Tsirkina083a892010-09-20 18:08:41 +0200371{
Jan Kiszka067404b2013-08-02 21:47:08 +0200372 if (nc->incoming_queue) {
373 qemu_del_net_queue(nc->incoming_queue);
Michael S. Tsirkina083a892010-09-20 18:08:41 +0200374 }
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100375 if (nc->peer) {
376 nc->peer->peer = NULL;
Mark McLoughlin5610c3a2009-10-08 19:58:23 +0100377 }
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100378 g_free(nc->name);
379 g_free(nc->model);
Jason Wangf7860452013-01-30 19:12:27 +0800380 if (nc->destructor) {
381 nc->destructor(nc);
382 }
aliguori63a01ef2008-10-31 19:10:00 +0000383}
384
Stefan Hajnoczib20c6b92012-07-24 16:35:15 +0100385void qemu_del_net_client(NetClientState *nc)
Michael S. Tsirkina083a892010-09-20 18:08:41 +0200386{
Jason Wang1ceef9f2013-01-30 19:12:28 +0800387 NetClientState *ncs[MAX_QUEUE_NUM];
388 int queues, i;
Yang Hongyangfdccce42015-10-07 11:52:14 +0800389 NetFilterState *nf, *next;
Jason Wang1ceef9f2013-01-30 19:12:28 +0800390
Paolo Bonzini7fb43912014-12-23 17:53:20 +0100391 assert(nc->info->type != NET_CLIENT_OPTIONS_KIND_NIC);
392
Jason Wang1ceef9f2013-01-30 19:12:28 +0800393 /* If the NetClientState belongs to a multiqueue backend, we will change all
394 * other NetClientStates also.
395 */
396 queues = qemu_find_net_clients_except(nc->name, ncs,
397 NET_CLIENT_OPTIONS_KIND_NIC,
398 MAX_QUEUE_NUM);
399 assert(queues != 0);
400
Yang Hongyangfdccce42015-10-07 11:52:14 +0800401 QTAILQ_FOREACH_SAFE(nf, &nc->filters, next, next) {
402 object_unparent(OBJECT(nf));
403 }
404
Michael S. Tsirkina083a892010-09-20 18:08:41 +0200405 /* If there is a peer NIC, delete and cleanup client, but do not free. */
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100406 if (nc->peer && nc->peer->info->type == NET_CLIENT_OPTIONS_KIND_NIC) {
Jason Wangcc1f0f42013-01-30 19:12:23 +0800407 NICState *nic = qemu_get_nic(nc->peer);
Michael S. Tsirkina083a892010-09-20 18:08:41 +0200408 if (nic->peer_deleted) {
409 return;
410 }
411 nic->peer_deleted = true;
Jason Wang1ceef9f2013-01-30 19:12:28 +0800412
413 for (i = 0; i < queues; i++) {
414 ncs[i]->peer->link_down = true;
415 }
416
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100417 if (nc->peer->info->link_status_changed) {
418 nc->peer->info->link_status_changed(nc->peer);
Michael S. Tsirkina083a892010-09-20 18:08:41 +0200419 }
Jason Wang1ceef9f2013-01-30 19:12:28 +0800420
421 for (i = 0; i < queues; i++) {
422 qemu_cleanup_net_client(ncs[i]);
423 }
424
Michael S. Tsirkina083a892010-09-20 18:08:41 +0200425 return;
426 }
427
Jason Wang1ceef9f2013-01-30 19:12:28 +0800428 for (i = 0; i < queues; i++) {
429 qemu_cleanup_net_client(ncs[i]);
430 qemu_free_net_client(ncs[i]);
431 }
Jason Wang948ecf22013-01-30 19:12:24 +0800432}
433
434void qemu_del_nic(NICState *nic)
435{
Jiri Pirko575a1c02014-05-26 12:04:08 +0200436 int i, queues = MAX(nic->conf->peers.queues, 1);
Jason Wang1ceef9f2013-01-30 19:12:28 +0800437
Shannon Zhao2bc22a52015-05-21 17:44:48 +0800438 qemu_macaddr_set_free(&nic->conf->macaddr);
439
Michael S. Tsirkina083a892010-09-20 18:08:41 +0200440 /* If this is a peer NIC and peer has already been deleted, free it now. */
Jason Wang1ceef9f2013-01-30 19:12:28 +0800441 if (nic->peer_deleted) {
442 for (i = 0; i < queues; i++) {
443 qemu_free_net_client(qemu_get_subqueue(nic, i)->peer);
Michael S. Tsirkina083a892010-09-20 18:08:41 +0200444 }
445 }
446
Jason Wang1ceef9f2013-01-30 19:12:28 +0800447 for (i = queues - 1; i >= 0; i--) {
448 NetClientState *nc = qemu_get_subqueue(nic, i);
449
450 qemu_cleanup_net_client(nc);
451 qemu_free_net_client(nc);
452 }
Jason Wangf6b26cf2013-02-22 23:15:06 +0800453
454 g_free(nic);
Jan Kiszka1a609522009-06-24 14:42:31 +0200455}
456
Mark McLoughlin57f9ef12009-11-25 18:49:31 +0000457void qemu_foreach_nic(qemu_nic_foreach func, void *opaque)
458{
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100459 NetClientState *nc;
Mark McLoughlin57f9ef12009-11-25 18:49:31 +0000460
Stefan Hajnoczi94878992012-07-24 16:35:12 +0100461 QTAILQ_FOREACH(nc, &net_clients, next) {
Laszlo Ersek2be64a62012-07-17 16:17:12 +0200462 if (nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC) {
Jason Wang1ceef9f2013-01-30 19:12:28 +0800463 if (nc->queue_index == 0) {
464 func(qemu_get_nic(nc), opaque);
465 }
Mark McLoughlin57f9ef12009-11-25 18:49:31 +0000466 }
467 }
Mark McLoughlin57f9ef12009-11-25 18:49:31 +0000468}
469
Stefan Hajnoczid6085e32014-02-20 12:14:07 +0100470bool qemu_has_ufo(NetClientState *nc)
Vincenzo Maffione1f55ac42014-02-06 17:02:16 +0100471{
Stefan Hajnoczid6085e32014-02-20 12:14:07 +0100472 if (!nc || !nc->info->has_ufo) {
Vincenzo Maffione1f55ac42014-02-06 17:02:16 +0100473 return false;
474 }
475
Stefan Hajnoczid6085e32014-02-20 12:14:07 +0100476 return nc->info->has_ufo(nc);
Vincenzo Maffione1f55ac42014-02-06 17:02:16 +0100477}
478
Stefan Hajnoczid6085e32014-02-20 12:14:07 +0100479bool qemu_has_vnet_hdr(NetClientState *nc)
Vincenzo Maffione1f55ac42014-02-06 17:02:16 +0100480{
Stefan Hajnoczid6085e32014-02-20 12:14:07 +0100481 if (!nc || !nc->info->has_vnet_hdr) {
Vincenzo Maffione1f55ac42014-02-06 17:02:16 +0100482 return false;
483 }
484
Stefan Hajnoczid6085e32014-02-20 12:14:07 +0100485 return nc->info->has_vnet_hdr(nc);
Vincenzo Maffione1f55ac42014-02-06 17:02:16 +0100486}
487
Stefan Hajnoczid6085e32014-02-20 12:14:07 +0100488bool qemu_has_vnet_hdr_len(NetClientState *nc, int len)
Vincenzo Maffione1f55ac42014-02-06 17:02:16 +0100489{
Stefan Hajnoczid6085e32014-02-20 12:14:07 +0100490 if (!nc || !nc->info->has_vnet_hdr_len) {
Vincenzo Maffione1f55ac42014-02-06 17:02:16 +0100491 return false;
492 }
493
Stefan Hajnoczid6085e32014-02-20 12:14:07 +0100494 return nc->info->has_vnet_hdr_len(nc, len);
Vincenzo Maffione1f55ac42014-02-06 17:02:16 +0100495}
496
Stefan Hajnoczid6085e32014-02-20 12:14:07 +0100497void qemu_using_vnet_hdr(NetClientState *nc, bool enable)
Vincenzo Maffione1f55ac42014-02-06 17:02:16 +0100498{
Stefan Hajnoczid6085e32014-02-20 12:14:07 +0100499 if (!nc || !nc->info->using_vnet_hdr) {
Vincenzo Maffione1f55ac42014-02-06 17:02:16 +0100500 return;
501 }
502
Stefan Hajnoczid6085e32014-02-20 12:14:07 +0100503 nc->info->using_vnet_hdr(nc, enable);
Vincenzo Maffione1f55ac42014-02-06 17:02:16 +0100504}
505
Stefan Hajnoczid6085e32014-02-20 12:14:07 +0100506void qemu_set_offload(NetClientState *nc, int csum, int tso4, int tso6,
Vincenzo Maffione1f55ac42014-02-06 17:02:16 +0100507 int ecn, int ufo)
508{
Stefan Hajnoczid6085e32014-02-20 12:14:07 +0100509 if (!nc || !nc->info->set_offload) {
Vincenzo Maffione1f55ac42014-02-06 17:02:16 +0100510 return;
511 }
512
Stefan Hajnoczid6085e32014-02-20 12:14:07 +0100513 nc->info->set_offload(nc, csum, tso4, tso6, ecn, ufo);
Vincenzo Maffione1f55ac42014-02-06 17:02:16 +0100514}
515
Stefan Hajnoczid6085e32014-02-20 12:14:07 +0100516void qemu_set_vnet_hdr_len(NetClientState *nc, int len)
Vincenzo Maffione1f55ac42014-02-06 17:02:16 +0100517{
Stefan Hajnoczid6085e32014-02-20 12:14:07 +0100518 if (!nc || !nc->info->set_vnet_hdr_len) {
Vincenzo Maffione1f55ac42014-02-06 17:02:16 +0100519 return;
520 }
521
Stefan Hajnoczid6085e32014-02-20 12:14:07 +0100522 nc->info->set_vnet_hdr_len(nc, len);
Vincenzo Maffione1f55ac42014-02-06 17:02:16 +0100523}
524
Greg Kurzc80cd6b2015-06-17 15:23:44 +0200525int qemu_set_vnet_le(NetClientState *nc, bool is_le)
526{
527 if (!nc || !nc->info->set_vnet_le) {
528 return -ENOSYS;
529 }
530
531 return nc->info->set_vnet_le(nc, is_le);
532}
533
534int qemu_set_vnet_be(NetClientState *nc, bool is_be)
535{
536 if (!nc || !nc->info->set_vnet_be) {
537 return -ENOSYS;
538 }
539
540 return nc->info->set_vnet_be(nc, is_be);
541}
542
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100543int qemu_can_send_packet(NetClientState *sender)
aliguori63a01ef2008-10-31 19:10:00 +0000544{
zhanghailiange1d64c02014-08-26 16:06:17 +0800545 int vm_running = runstate_is_running();
546
547 if (!vm_running) {
548 return 0;
549 }
550
Stefan Hajnoczia005d072012-07-24 16:35:11 +0100551 if (!sender->peer) {
Mark McLoughlind80b9fc2009-10-08 19:58:24 +0100552 return 1;
553 }
554
Stefan Hajnoczia005d072012-07-24 16:35:11 +0100555 if (sender->peer->receive_disabled) {
556 return 0;
557 } else if (sender->peer->info->can_receive &&
558 !sender->peer->info->can_receive(sender->peer)) {
559 return 0;
aliguori63a01ef2008-10-31 19:10:00 +0000560 }
Vincent Palatin60c07d92011-03-02 17:25:02 -0500561 return 1;
aliguori63a01ef2008-10-31 19:10:00 +0000562}
563
Yang Hongyange64c7702015-10-07 11:52:15 +0800564static ssize_t filter_receive_iov(NetClientState *nc,
565 NetFilterDirection direction,
566 NetClientState *sender,
567 unsigned flags,
568 const struct iovec *iov,
569 int iovcnt,
570 NetPacketSent *sent_cb)
571{
572 ssize_t ret = 0;
573 NetFilterState *nf = NULL;
574
575 QTAILQ_FOREACH(nf, &nc->filters, next) {
576 ret = qemu_netfilter_receive(nf, direction, sender, flags, iov,
577 iovcnt, sent_cb);
578 if (ret) {
579 return ret;
580 }
581 }
582
583 return ret;
584}
585
586static ssize_t filter_receive(NetClientState *nc,
587 NetFilterDirection direction,
588 NetClientState *sender,
589 unsigned flags,
590 const uint8_t *data,
591 size_t size,
592 NetPacketSent *sent_cb)
593{
594 struct iovec iov = {
595 .iov_base = (void *)data,
596 .iov_len = size
597 };
598
599 return filter_receive_iov(nc, direction, sender, flags, &iov, 1, sent_cb);
600}
601
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100602void qemu_purge_queued_packets(NetClientState *nc)
aliguori63a01ef2008-10-31 19:10:00 +0000603{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100604 if (!nc->peer) {
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100605 return;
606 }
607
Jan Kiszka067404b2013-08-02 21:47:08 +0200608 qemu_net_queue_purge(nc->peer->incoming_queue, nc);
Mark McLoughlin8cad5512009-06-18 18:21:29 +0100609}
610
Michael S. Tsirkinca77d852014-09-04 11:39:13 +0300611static
612void qemu_flush_or_purge_queued_packets(NetClientState *nc, bool purge)
Mark McLoughline94667b2009-04-29 11:48:12 +0100613{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100614 nc->receive_disabled = 0;
Mark McLoughlind80b9fc2009-10-08 19:58:24 +0100615
Luigi Rizzo199ee602013-02-05 17:53:31 +0100616 if (nc->peer && nc->peer->info->type == NET_CLIENT_OPTIONS_KIND_HUBPORT) {
617 if (net_hub_flush(nc->peer)) {
618 qemu_notify_event();
619 }
Luigi Rizzo199ee602013-02-05 17:53:31 +0100620 }
Jan Kiszka067404b2013-08-02 21:47:08 +0200621 if (qemu_net_queue_flush(nc->incoming_queue)) {
Paolo Bonzini987a9b42012-08-09 16:45:55 +0200622 /* We emptied the queue successfully, signal to the IO thread to repoll
623 * the file descriptor (for tap, for example).
624 */
625 qemu_notify_event();
Michael S. Tsirkinca77d852014-09-04 11:39:13 +0300626 } else if (purge) {
627 /* Unable to empty the queue, purge remaining packets */
628 qemu_net_queue_purge(nc->incoming_queue, nc);
Paolo Bonzini987a9b42012-08-09 16:45:55 +0200629 }
Mark McLoughline94667b2009-04-29 11:48:12 +0100630}
631
Michael S. Tsirkinca77d852014-09-04 11:39:13 +0300632void qemu_flush_queued_packets(NetClientState *nc)
633{
634 qemu_flush_or_purge_queued_packets(nc, false);
635}
636
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100637static ssize_t qemu_send_packet_async_with_flags(NetClientState *sender,
Mark McLoughlinca77d172009-10-22 17:43:41 +0100638 unsigned flags,
639 const uint8_t *buf, int size,
640 NetPacketSent *sent_cb)
aliguori764a4d12009-04-21 19:56:41 +0000641{
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100642 NetQueue *queue;
Yang Hongyange64c7702015-10-07 11:52:15 +0800643 int ret;
Mark McLoughline94667b2009-04-29 11:48:12 +0100644
Mark McLoughlinf3b6c7f2009-04-29 12:15:26 +0100645#ifdef DEBUG_NET
Mark McLoughlind80b9fc2009-10-08 19:58:24 +0100646 printf("qemu_send_packet_async:\n");
Mark McLoughlinf3b6c7f2009-04-29 12:15:26 +0100647 hex_dump(stdout, buf, size);
648#endif
649
Stefan Hajnoczia005d072012-07-24 16:35:11 +0100650 if (sender->link_down || !sender->peer) {
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100651 return size;
652 }
653
Yang Hongyange64c7702015-10-07 11:52:15 +0800654 /* Let filters handle the packet first */
655 ret = filter_receive(sender, NET_FILTER_DIRECTION_TX,
656 sender, flags, buf, size, sent_cb);
657 if (ret) {
658 return ret;
659 }
660
661 ret = filter_receive(sender->peer, NET_FILTER_DIRECTION_RX,
662 sender, flags, buf, size, sent_cb);
663 if (ret) {
664 return ret;
665 }
666
Jan Kiszka067404b2013-08-02 21:47:08 +0200667 queue = sender->peer->incoming_queue;
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100668
Mark McLoughlinca77d172009-10-22 17:43:41 +0100669 return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb);
670}
671
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100672ssize_t qemu_send_packet_async(NetClientState *sender,
Mark McLoughlinca77d172009-10-22 17:43:41 +0100673 const uint8_t *buf, int size,
674 NetPacketSent *sent_cb)
675{
676 return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE,
677 buf, size, sent_cb);
Mark McLoughlinf3b6c7f2009-04-29 12:15:26 +0100678}
679
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100680void qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size)
Mark McLoughlinf3b6c7f2009-04-29 12:15:26 +0100681{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100682 qemu_send_packet_async(nc, buf, size, NULL);
aliguori63a01ef2008-10-31 19:10:00 +0000683}
684
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100685ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size)
Mark McLoughlinca77d172009-10-22 17:43:41 +0100686{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100687 return qemu_send_packet_async_with_flags(nc, QEMU_NET_PACKET_FLAG_RAW,
Mark McLoughlinca77d172009-10-22 17:43:41 +0100688 buf, size, NULL);
689}
690
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100691static ssize_t nc_sendv_compat(NetClientState *nc, const struct iovec *iov,
Yang Hongyangfefe2a72015-10-07 11:52:16 +0800692 int iovcnt, unsigned flags)
aliguorifbe78f42008-12-17 19:13:11 +0000693{
Yang Hongyangfefe2a72015-10-07 11:52:16 +0800694 uint8_t buf[NET_BUFSIZE];
695 uint8_t *buffer;
Benjamin Poirierce053662011-02-23 19:57:21 -0500696 size_t offset;
aliguorifbe78f42008-12-17 19:13:11 +0000697
Yang Hongyangfefe2a72015-10-07 11:52:16 +0800698 if (iovcnt == 1) {
699 buffer = iov[0].iov_base;
700 offset = iov[0].iov_len;
701 } else {
702 buffer = buf;
703 offset = iov_to_buf(iov, iovcnt, 0, buffer, sizeof(buffer));
704 }
aliguorifbe78f42008-12-17 19:13:11 +0000705
Yang Hongyangfefe2a72015-10-07 11:52:16 +0800706 if (flags & QEMU_NET_PACKET_FLAG_RAW && nc->info->receive_raw) {
707 return nc->info->receive_raw(nc, buffer, offset);
708 } else {
709 return nc->info->receive(nc, buffer, offset);
710 }
aliguorifbe78f42008-12-17 19:13:11 +0000711}
712
Zhi Yong Wu86a77c32012-07-24 16:35:17 +0100713ssize_t qemu_deliver_packet_iov(NetClientState *sender,
714 unsigned flags,
715 const struct iovec *iov,
716 int iovcnt,
717 void *opaque)
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100718{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100719 NetClientState *nc = opaque;
Stefan Hajnoczic67f5dc2012-08-17 21:16:42 +0100720 int ret;
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100721
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100722 if (nc->link_down) {
Benjamin Poirierce053662011-02-23 19:57:21 -0500723 return iov_size(iov, iovcnt);
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100724 }
725
Stefan Hajnoczic67f5dc2012-08-17 21:16:42 +0100726 if (nc->receive_disabled) {
727 return 0;
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100728 }
Stefan Hajnoczic67f5dc2012-08-17 21:16:42 +0100729
730 if (nc->info->receive_iov) {
731 ret = nc->info->receive_iov(nc, iov, iovcnt);
732 } else {
Yang Hongyangfefe2a72015-10-07 11:52:16 +0800733 ret = nc_sendv_compat(nc, iov, iovcnt, flags);
Stefan Hajnoczic67f5dc2012-08-17 21:16:42 +0100734 }
735
736 if (ret == 0) {
737 nc->receive_disabled = 1;
738 }
739
740 return ret;
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100741}
742
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100743ssize_t qemu_sendv_packet_async(NetClientState *sender,
Mark McLoughlinf3b6c7f2009-04-29 12:15:26 +0100744 const struct iovec *iov, int iovcnt,
745 NetPacketSent *sent_cb)
aliguorifbe78f42008-12-17 19:13:11 +0000746{
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100747 NetQueue *queue;
Yang Hongyange64c7702015-10-07 11:52:15 +0800748 int ret;
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100749
Stefan Hajnoczia005d072012-07-24 16:35:11 +0100750 if (sender->link_down || !sender->peer) {
Benjamin Poirierce053662011-02-23 19:57:21 -0500751 return iov_size(iov, iovcnt);
aliguorifbe78f42008-12-17 19:13:11 +0000752 }
753
Yang Hongyange64c7702015-10-07 11:52:15 +0800754 /* Let filters handle the packet first */
755 ret = filter_receive_iov(sender, NET_FILTER_DIRECTION_TX, sender,
756 QEMU_NET_PACKET_FLAG_NONE, iov, iovcnt, sent_cb);
757 if (ret) {
758 return ret;
759 }
760
761 ret = filter_receive_iov(sender->peer, NET_FILTER_DIRECTION_RX, sender,
762 QEMU_NET_PACKET_FLAG_NONE, iov, iovcnt, sent_cb);
763 if (ret) {
764 return ret;
765 }
766
Jan Kiszka067404b2013-08-02 21:47:08 +0200767 queue = sender->peer->incoming_queue;
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100768
Mark McLoughlinc0b8e492009-10-22 17:43:40 +0100769 return qemu_net_queue_send_iov(queue, sender,
770 QEMU_NET_PACKET_FLAG_NONE,
771 iov, iovcnt, sent_cb);
aliguorifbe78f42008-12-17 19:13:11 +0000772}
773
Mark McLoughlinf3b6c7f2009-04-29 12:15:26 +0100774ssize_t
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100775qemu_sendv_packet(NetClientState *nc, const struct iovec *iov, int iovcnt)
Mark McLoughlinf3b6c7f2009-04-29 12:15:26 +0100776{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100777 return qemu_sendv_packet_async(nc, iov, iovcnt, NULL);
Mark McLoughlinf3b6c7f2009-04-29 12:15:26 +0100778}
779
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100780NetClientState *qemu_find_netdev(const char *id)
aliguori63a01ef2008-10-31 19:10:00 +0000781{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100782 NetClientState *nc;
Mark McLoughlin5610c3a2009-10-08 19:58:23 +0100783
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100784 QTAILQ_FOREACH(nc, &net_clients, next) {
785 if (nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC)
Markus Armbruster85dde9a2011-06-16 18:45:37 +0200786 continue;
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100787 if (!strcmp(nc->name, id)) {
788 return nc;
Mark McLoughlin5869c4d2009-10-08 19:58:29 +0100789 }
790 }
791
792 return NULL;
793}
794
Jason Wang6c51ae72013-01-30 19:12:25 +0800795int qemu_find_net_clients_except(const char *id, NetClientState **ncs,
796 NetClientOptionsKind type, int max)
797{
798 NetClientState *nc;
799 int ret = 0;
800
801 QTAILQ_FOREACH(nc, &net_clients, next) {
802 if (nc->info->type == type) {
803 continue;
804 }
Hani Benhabiles40d19392014-05-07 23:41:30 +0100805 if (!id || !strcmp(nc->name, id)) {
Jason Wang6c51ae72013-01-30 19:12:25 +0800806 if (ret < max) {
807 ncs[ret] = nc;
808 }
809 ret++;
810 }
811 }
812
813 return ret;
814}
815
aliguori76970792009-02-11 15:20:03 +0000816static int nic_get_free_idx(void)
817{
818 int index;
819
820 for (index = 0; index < MAX_NICS; index++)
821 if (!nd_table[index].used)
822 return index;
823 return -1;
824}
825
Markus Armbruster07caea32009-09-25 03:53:51 +0200826int qemu_show_nic_models(const char *arg, const char *const *models)
827{
828 int i;
829
Peter Maydellc8057f92012-08-02 13:45:54 +0100830 if (!arg || !is_help_option(arg)) {
Markus Armbruster07caea32009-09-25 03:53:51 +0200831 return 0;
Peter Maydellc8057f92012-08-02 13:45:54 +0100832 }
Markus Armbruster07caea32009-09-25 03:53:51 +0200833
834 fprintf(stderr, "qemu: Supported NIC models: ");
835 for (i = 0 ; models[i]; i++)
836 fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n');
837 return 1;
838}
839
aliguorid07f22c2009-01-13 19:03:57 +0000840void qemu_check_nic_model(NICInfo *nd, const char *model)
841{
842 const char *models[2];
843
844 models[0] = model;
845 models[1] = NULL;
846
Markus Armbruster07caea32009-09-25 03:53:51 +0200847 if (qemu_show_nic_models(nd->model, models))
848 exit(0);
849 if (qemu_find_nic_model(nd, models, model) < 0)
850 exit(1);
aliguorid07f22c2009-01-13 19:03:57 +0000851}
852
Markus Armbruster07caea32009-09-25 03:53:51 +0200853int qemu_find_nic_model(NICInfo *nd, const char * const *models,
854 const char *default_model)
aliguorid07f22c2009-01-13 19:03:57 +0000855{
Markus Armbruster07caea32009-09-25 03:53:51 +0200856 int i;
aliguorid07f22c2009-01-13 19:03:57 +0000857
858 if (!nd->model)
Anthony Liguori7267c092011-08-20 22:09:37 -0500859 nd->model = g_strdup(default_model);
aliguorid07f22c2009-01-13 19:03:57 +0000860
Markus Armbruster07caea32009-09-25 03:53:51 +0200861 for (i = 0 ; models[i]; i++) {
862 if (strcmp(nd->model, models[i]) == 0)
863 return i;
aliguorid07f22c2009-01-13 19:03:57 +0000864 }
865
Markus Armbruster6daf1942011-06-22 14:03:54 +0200866 error_report("Unsupported NIC model: %s", nd->model);
Markus Armbruster07caea32009-09-25 03:53:51 +0200867 return -1;
aliguorid07f22c2009-01-13 19:03:57 +0000868}
869
Laszlo Ersek1a0c0952012-07-17 16:17:21 +0200870static int net_init_nic(const NetClientOptions *opts, const char *name,
Markus Armbrustera30ecde2015-05-15 13:58:50 +0200871 NetClientState *peer, Error **errp)
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100872{
873 int idx;
874 NICInfo *nd;
Laszlo Ersek2456f362012-07-17 16:17:14 +0200875 const NetLegacyNicOptions *nic;
876
877 assert(opts->kind == NET_CLIENT_OPTIONS_KIND_NIC);
878 nic = opts->nic;
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100879
880 idx = nic_get_free_idx();
881 if (idx == -1 || nb_nics >= MAX_NICS) {
Markus Armbruster66308862015-05-15 13:58:51 +0200882 error_setg(errp, "too many NICs");
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100883 return -1;
884 }
885
886 nd = &nd_table[idx];
887
888 memset(nd, 0, sizeof(*nd));
889
Laszlo Ersek2456f362012-07-17 16:17:14 +0200890 if (nic->has_netdev) {
891 nd->netdev = qemu_find_netdev(nic->netdev);
Mark McLoughlin5869c4d2009-10-08 19:58:29 +0100892 if (!nd->netdev) {
Markus Armbruster66308862015-05-15 13:58:51 +0200893 error_setg(errp, "netdev '%s' not found", nic->netdev);
Mark McLoughlin5869c4d2009-10-08 19:58:29 +0100894 return -1;
895 }
896 } else {
Stefan Hajnoczid33d93b2012-07-24 16:35:05 +0100897 assert(peer);
898 nd->netdev = peer;
Mark McLoughlin5869c4d2009-10-08 19:58:29 +0100899 }
Markus Armbrusterc64f50d2013-01-22 11:07:57 +0100900 nd->name = g_strdup(name);
Laszlo Ersek2456f362012-07-17 16:17:14 +0200901 if (nic->has_model) {
902 nd->model = g_strdup(nic->model);
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100903 }
Laszlo Ersek2456f362012-07-17 16:17:14 +0200904 if (nic->has_addr) {
905 nd->devaddr = g_strdup(nic->addr);
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100906 }
907
Laszlo Ersek2456f362012-07-17 16:17:14 +0200908 if (nic->has_macaddr &&
909 net_parse_macaddr(nd->macaddr.a, nic->macaddr) < 0) {
Markus Armbruster66308862015-05-15 13:58:51 +0200910 error_setg(errp, "invalid syntax for ethernet address");
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100911 return -1;
912 }
Dmitry Krivenokd60b20c2013-10-21 12:08:44 +0400913 if (nic->has_macaddr &&
914 is_multicast_ether_addr(nd->macaddr.a)) {
Markus Armbruster66308862015-05-15 13:58:51 +0200915 error_setg(errp,
916 "NIC cannot have multicast MAC address (odd 1st byte)");
Dmitry Krivenokd60b20c2013-10-21 12:08:44 +0400917 return -1;
918 }
Jan Kiszka6eed1852011-07-20 12:20:22 +0200919 qemu_macaddr_default_if_unset(&nd->macaddr);
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100920
Laszlo Ersek2456f362012-07-17 16:17:14 +0200921 if (nic->has_vectors) {
922 if (nic->vectors > 0x7ffffff) {
Markus Armbruster66308862015-05-15 13:58:51 +0200923 error_setg(errp, "invalid # of vectors: %"PRIu32, nic->vectors);
Laszlo Ersek2456f362012-07-17 16:17:14 +0200924 return -1;
925 }
926 nd->nvectors = nic->vectors;
927 } else {
928 nd->nvectors = DEV_NVECTORS_UNSPECIFIED;
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100929 }
930
931 nd->used = 1;
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100932 nb_nics++;
933
934 return idx;
935}
936
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100937
Laszlo Ersek6687b792012-07-17 16:17:13 +0200938static int (* const net_client_init_fun[NET_CLIENT_OPTIONS_KIND_MAX])(
Laszlo Ersek1a0c0952012-07-17 16:17:21 +0200939 const NetClientOptions *opts,
Laszlo Ersek6687b792012-07-17 16:17:13 +0200940 const char *name,
Markus Armbrustera30ecde2015-05-15 13:58:50 +0200941 NetClientState *peer, Error **errp) = {
Stefan Hajnoczif6c874e2012-07-24 16:35:04 +0100942 [NET_CLIENT_OPTIONS_KIND_NIC] = net_init_nic,
Mark McLoughlinec302ff2009-10-06 12:17:07 +0100943#ifdef CONFIG_SLIRP
Stefan Hajnoczif6c874e2012-07-24 16:35:04 +0100944 [NET_CLIENT_OPTIONS_KIND_USER] = net_init_slirp,
Mark McLoughlinec302ff2009-10-06 12:17:07 +0100945#endif
Stefan Hajnoczif6c874e2012-07-24 16:35:04 +0100946 [NET_CLIENT_OPTIONS_KIND_TAP] = net_init_tap,
947 [NET_CLIENT_OPTIONS_KIND_SOCKET] = net_init_socket,
Mark McLoughlindd510582009-10-06 12:17:10 +0100948#ifdef CONFIG_VDE
Stefan Hajnoczif6c874e2012-07-24 16:35:04 +0100949 [NET_CLIENT_OPTIONS_KIND_VDE] = net_init_vde,
Mark McLoughlindd510582009-10-06 12:17:10 +0100950#endif
Vincenzo Maffione58952132013-11-06 11:44:06 +0100951#ifdef CONFIG_NETMAP
952 [NET_CLIENT_OPTIONS_KIND_NETMAP] = net_init_netmap,
953#endif
Stefan Hajnoczif6c874e2012-07-24 16:35:04 +0100954 [NET_CLIENT_OPTIONS_KIND_DUMP] = net_init_dump,
Stefan Weil2944e4e2012-02-04 09:24:46 +0100955#ifdef CONFIG_NET_BRIDGE
Stefan Hajnoczif6c874e2012-07-24 16:35:04 +0100956 [NET_CLIENT_OPTIONS_KIND_BRIDGE] = net_init_bridge,
Laszlo Ersek6687b792012-07-17 16:17:13 +0200957#endif
Stefan Hajnoczif6c874e2012-07-24 16:35:04 +0100958 [NET_CLIENT_OPTIONS_KIND_HUBPORT] = net_init_hubport,
Nikolay Nikolaev03ce5742014-06-10 13:02:16 +0300959#ifdef CONFIG_VHOST_NET_USED
960 [NET_CLIENT_OPTIONS_KIND_VHOST_USER] = net_init_vhost_user,
961#endif
Gonglei015a33b2014-07-01 20:58:08 +0800962#ifdef CONFIG_L2TPV3
Anton Ivanov3fb69aa2014-06-20 10:34:41 +0100963 [NET_CLIENT_OPTIONS_KIND_L2TPV3] = net_init_l2tpv3,
964#endif
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100965};
966
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100967
Laszlo Ersek1a0c0952012-07-17 16:17:21 +0200968static int net_client_init1(const void *object, int is_netdev, Error **errp)
Laszlo Ersek6687b792012-07-17 16:17:13 +0200969{
Laszlo Ersek6687b792012-07-17 16:17:13 +0200970 const NetClientOptions *opts;
971 const char *name;
Stefan Hajnoczi4ef0def2015-05-27 17:16:51 +0100972 NetClientState *peer = NULL;
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100973
Markus Armbruster5294e2c2010-03-25 17:22:38 +0100974 if (is_netdev) {
Stefan Hajnoczi1e81aba2015-05-27 17:16:52 +0100975 const Netdev *netdev = object;
976 opts = netdev->opts;
977 name = netdev->id;
Laszlo Ersek6687b792012-07-17 16:17:13 +0200978
Stefan Hajnoczi13226292015-05-27 17:16:49 +0100979 if (opts->kind == NET_CLIENT_OPTIONS_KIND_DUMP ||
980 opts->kind == NET_CLIENT_OPTIONS_KIND_NIC ||
981 !net_client_init_fun[opts->kind]) {
Markus Armbrusterc6bd8c72015-03-17 11:54:50 +0100982 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "type",
983 "a netdev backend type");
Mark McLoughlinf6b134a2009-10-08 19:58:27 +0100984 return -1;
985 }
Laszlo Ersek6687b792012-07-17 16:17:13 +0200986 } else {
Stefan Hajnoczi1e81aba2015-05-27 17:16:52 +0100987 const NetLegacy *net = object;
988 opts = net->opts;
989 /* missing optional values have been initialized to "all bits zero" */
990 name = net->has_id ? net->id : net->name;
991
992 if (opts->kind == NET_CLIENT_OPTIONS_KIND_NONE) {
993 return 0; /* nothing to do */
994 }
Markus Armbrusterca7eb182015-05-15 13:58:49 +0200995 if (opts->kind == NET_CLIENT_OPTIONS_KIND_HUBPORT) {
Markus Armbrusterc6bd8c72015-03-17 11:54:50 +0100996 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "type",
997 "a net type");
Markus Armbrusterca7eb182015-05-15 13:58:49 +0200998 return -1;
999 }
Stefan Hajnoczid139e9a2015-05-27 17:16:50 +01001000
1001 if (!net_client_init_fun[opts->kind]) {
1002 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "type",
1003 "a net backend type (maybe it is not compiled "
1004 "into this binary)");
1005 return -1;
1006 }
Mark McLoughlinf6b134a2009-10-08 19:58:27 +01001007
Stefan Hajnoczi1e81aba2015-05-27 17:16:52 +01001008 /* Do not add to a vlan if it's a nic with a netdev= parameter. */
1009 if (opts->kind != NET_CLIENT_OPTIONS_KIND_NIC ||
1010 !opts->nic->has_netdev) {
1011 peer = net_hub_add_port(net->has_vlan ? net->vlan : 0, NULL);
1012 }
Stefan Hajnoczi4ef0def2015-05-27 17:16:51 +01001013 }
Laszlo Ersek6687b792012-07-17 16:17:13 +02001014
Stefan Hajnoczi4ef0def2015-05-27 17:16:51 +01001015 if (net_client_init_fun[opts->kind](opts, name, peer, errp) < 0) {
1016 /* FIXME drop when all init functions store an Error */
1017 if (errp && !*errp) {
1018 error_setg(errp, QERR_DEVICE_INIT_FAILED,
1019 NetClientOptionsKind_lookup[opts->kind]);
Mark McLoughlinf6b134a2009-10-08 19:58:27 +01001020 }
Stefan Hajnoczi4ef0def2015-05-27 17:16:51 +01001021 return -1;
Mark McLoughlinf6b134a2009-10-08 19:58:27 +01001022 }
Laszlo Ersek6687b792012-07-17 16:17:13 +02001023 return 0;
Mark McLoughlinf83c6e12009-10-06 12:17:06 +01001024}
1025
Laszlo Ersek6687b792012-07-17 16:17:13 +02001026
1027static void net_visit(Visitor *v, int is_netdev, void **object, Error **errp)
1028{
1029 if (is_netdev) {
1030 visit_type_Netdev(v, (Netdev **)object, NULL, errp);
1031 } else {
1032 visit_type_NetLegacy(v, (NetLegacy **)object, NULL, errp);
1033 }
1034}
1035
1036
1037int net_client_init(QemuOpts *opts, int is_netdev, Error **errp)
1038{
1039 void *object = NULL;
1040 Error *err = NULL;
1041 int ret = -1;
1042
1043 {
1044 OptsVisitor *ov = opts_visitor_new(opts);
1045
1046 net_visit(opts_get_visitor(ov), is_netdev, &object, &err);
1047 opts_visitor_cleanup(ov);
1048 }
1049
1050 if (!err) {
Laszlo Ersek1a0c0952012-07-17 16:17:21 +02001051 ret = net_client_init1(object, is_netdev, &err);
Laszlo Ersek6687b792012-07-17 16:17:13 +02001052 }
1053
1054 if (object) {
1055 QapiDeallocVisitor *dv = qapi_dealloc_visitor_new();
1056
1057 net_visit(qapi_dealloc_get_visitor(dv), is_netdev, &object, NULL);
1058 qapi_dealloc_visitor_cleanup(dv);
1059 }
1060
1061 error_propagate(errp, err);
1062 return ret;
1063}
1064
1065
aliguori6f338c32009-02-11 15:21:54 +00001066static int net_host_check_device(const char *device)
1067{
1068 int i;
Hani Benhabiles84007e82014-05-27 23:39:33 +01001069 for (i = 0; host_net_devices[i]; i++) {
1070 if (!strncmp(host_net_devices[i], device,
1071 strlen(host_net_devices[i]))) {
aliguori6f338c32009-02-11 15:21:54 +00001072 return 1;
Hani Benhabiles84007e82014-05-27 23:39:33 +01001073 }
aliguori6f338c32009-02-11 15:21:54 +00001074 }
1075
1076 return 0;
1077}
1078
Markus Armbruster3e5a50d2015-02-06 13:55:43 +01001079void hmp_host_net_add(Monitor *mon, const QDict *qdict)
aliguori6f338c32009-02-11 15:21:54 +00001080{
Luiz Capitulinof18c16d2009-08-28 15:27:14 -03001081 const char *device = qdict_get_str(qdict, "device");
Mark McLoughlin7f1c9d22009-10-06 12:17:13 +01001082 const char *opts_str = qdict_get_try_str(qdict, "opts");
Luiz Capitulino4559a1d2012-04-20 16:50:25 -03001083 Error *local_err = NULL;
Mark McLoughlin7f1c9d22009-10-06 12:17:13 +01001084 QemuOpts *opts;
Luiz Capitulinof18c16d2009-08-28 15:27:14 -03001085
aliguori6f338c32009-02-11 15:21:54 +00001086 if (!net_host_check_device(device)) {
aliguori376253e2009-03-05 23:01:23 +00001087 monitor_printf(mon, "invalid host network device %s\n", device);
aliguori6f338c32009-02-11 15:21:54 +00001088 return;
1089 }
Mark McLoughlin7f1c9d22009-10-06 12:17:13 +01001090
Markus Armbruster70b94332015-02-13 12:50:26 +01001091 opts = qemu_opts_parse_noisily(qemu_find_opts("net"),
1092 opts_str ? opts_str : "", false);
Mark McLoughlin7f1c9d22009-10-06 12:17:13 +01001093 if (!opts) {
Mark McLoughlin7f1c9d22009-10-06 12:17:13 +01001094 return;
1095 }
1096
Markus Armbrusterf43e47d2015-02-12 17:52:20 +01001097 qemu_opt_set(opts, "type", device, &error_abort);
Mark McLoughlin7f1c9d22009-10-06 12:17:13 +01001098
Luiz Capitulino4559a1d2012-04-20 16:50:25 -03001099 net_client_init(opts, 0, &local_err);
Markus Armbruster84d18f02014-01-30 15:07:28 +01001100 if (local_err) {
Markus Armbruster12d0cc22015-02-10 15:02:06 +01001101 error_report_err(local_err);
aliguori5c8be672009-04-21 19:56:32 +00001102 monitor_printf(mon, "adding host network device %s failed\n", device);
1103 }
aliguori6f338c32009-02-11 15:21:54 +00001104}
1105
Markus Armbruster3e5a50d2015-02-06 13:55:43 +01001106void hmp_host_net_remove(Monitor *mon, const QDict *qdict)
aliguori6f338c32009-02-11 15:21:54 +00001107{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +01001108 NetClientState *nc;
Luiz Capitulinof18c16d2009-08-28 15:27:14 -03001109 int vlan_id = qdict_get_int(qdict, "vlan_id");
1110 const char *device = qdict_get_str(qdict, "device");
aliguori6f338c32009-02-11 15:21:54 +00001111
Stefan Hajnoczi35277d12012-07-24 16:35:14 +01001112 nc = net_hub_find_client_by_name(vlan_id, device);
1113 if (!nc) {
Hani Benhabiles86e11772014-04-01 00:05:14 +01001114 error_report("Host network device '%s' on hub '%d' not found",
1115 device, vlan_id);
aliguori6f338c32009-02-11 15:21:54 +00001116 return;
1117 }
Paolo Bonzini7fb43912014-12-23 17:53:20 +01001118 if (nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC) {
Hani Benhabiles86e11772014-04-01 00:05:14 +01001119 error_report("invalid host network device '%s'", device);
aliguorie8f1f9d2009-04-21 19:56:08 +00001120 return;
1121 }
Jason Wang64a55d62015-02-02 15:06:37 +08001122
1123 qemu_del_net_client(nc->peer);
Stefan Hajnoczib20c6b92012-07-24 16:35:15 +01001124 qemu_del_net_client(nc);
aliguori6f338c32009-02-11 15:21:54 +00001125}
1126
Luiz Capitulino928059a2012-04-18 17:34:15 -03001127void netdev_add(QemuOpts *opts, Error **errp)
1128{
1129 net_client_init(opts, 1, errp);
1130}
1131
Markus Armbruster485febc2015-03-13 17:25:50 +01001132void qmp_netdev_add(QDict *qdict, QObject **ret, Error **errp)
Markus Armbrusterae82d322010-03-25 17:22:40 +01001133{
Luiz Capitulino4e899782012-04-18 17:24:01 -03001134 Error *local_err = NULL;
Luiz Capitulino928059a2012-04-18 17:34:15 -03001135 QemuOptsList *opts_list;
Markus Armbrusterae82d322010-03-25 17:22:40 +01001136 QemuOpts *opts;
Markus Armbrusterae82d322010-03-25 17:22:40 +01001137
Luiz Capitulino928059a2012-04-18 17:34:15 -03001138 opts_list = qemu_find_opts_err("netdev", &local_err);
Markus Armbruster84d18f02014-01-30 15:07:28 +01001139 if (local_err) {
Markus Armbruster485febc2015-03-13 17:25:50 +01001140 goto out;
Markus Armbrusterae82d322010-03-25 17:22:40 +01001141 }
1142
Luiz Capitulino928059a2012-04-18 17:34:15 -03001143 opts = qemu_opts_from_qdict(opts_list, qdict, &local_err);
Markus Armbruster84d18f02014-01-30 15:07:28 +01001144 if (local_err) {
Markus Armbruster485febc2015-03-13 17:25:50 +01001145 goto out;
Luiz Capitulino928059a2012-04-18 17:34:15 -03001146 }
1147
1148 netdev_add(opts, &local_err);
Markus Armbruster84d18f02014-01-30 15:07:28 +01001149 if (local_err) {
Yoshiaki Tamura410cbaf2010-06-21 10:41:36 +09001150 qemu_opts_del(opts);
Markus Armbruster485febc2015-03-13 17:25:50 +01001151 goto out;
Yoshiaki Tamura410cbaf2010-06-21 10:41:36 +09001152 }
1153
Markus Armbruster485febc2015-03-13 17:25:50 +01001154out:
1155 error_propagate(errp, local_err);
Markus Armbrusterae82d322010-03-25 17:22:40 +01001156}
1157
Luiz Capitulino5f964152012-04-16 14:36:32 -03001158void qmp_netdev_del(const char *id, Error **errp)
Markus Armbrusterae82d322010-03-25 17:22:40 +01001159{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +01001160 NetClientState *nc;
Stefan Hajnoczi645c9492012-10-24 14:34:12 +02001161 QemuOpts *opts;
Markus Armbrusterae82d322010-03-25 17:22:40 +01001162
Stefan Hajnoczi35277d12012-07-24 16:35:14 +01001163 nc = qemu_find_netdev(id);
1164 if (!nc) {
Markus Armbruster75158eb2015-03-16 08:57:47 +01001165 error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
1166 "Device '%s' not found", id);
Luiz Capitulino5f964152012-04-16 14:36:32 -03001167 return;
Markus Armbrusterae82d322010-03-25 17:22:40 +01001168 }
Luiz Capitulino5f964152012-04-16 14:36:32 -03001169
Stefan Hajnoczi645c9492012-10-24 14:34:12 +02001170 opts = qemu_opts_find(qemu_find_opts_err("netdev", NULL), id);
1171 if (!opts) {
1172 error_setg(errp, "Device '%s' is not a netdev", id);
1173 return;
1174 }
1175
Stefan Hajnoczib20c6b92012-07-24 16:35:15 +01001176 qemu_del_net_client(nc);
Stefan Hajnoczi645c9492012-10-24 14:34:12 +02001177 qemu_opts_del(opts);
Markus Armbrusterae82d322010-03-25 17:22:40 +01001178}
1179
Zhi Yong Wu1a859592012-07-24 16:35:16 +01001180void print_net_client(Monitor *mon, NetClientState *nc)
Jan Kiszka44e798d2011-07-20 12:20:21 +02001181{
Yang Hongyanga4960f52015-10-07 11:52:19 +08001182 NetFilterState *nf;
1183
Jason Wang1ceef9f2013-01-30 19:12:28 +08001184 monitor_printf(mon, "%s: index=%d,type=%s,%s\n", nc->name,
1185 nc->queue_index,
1186 NetClientOptionsKind_lookup[nc->info->type],
1187 nc->info_str);
Yang Hongyanga4960f52015-10-07 11:52:19 +08001188 if (!QTAILQ_EMPTY(&nc->filters)) {
1189 monitor_printf(mon, "filters:\n");
1190 }
1191 QTAILQ_FOREACH(nf, &nc->filters, next) {
1192 monitor_printf(mon, " - %s: type=%s%s\n",
1193 object_get_canonical_path_component(OBJECT(nf)),
1194 object_get_typename(OBJECT(nf)),
1195 nf->info_str);
1196 }
Jan Kiszka44e798d2011-07-20 12:20:21 +02001197}
1198
Amos Kongb1be4282013-06-14 15:45:52 +08001199RxFilterInfoList *qmp_query_rx_filter(bool has_name, const char *name,
1200 Error **errp)
1201{
1202 NetClientState *nc;
1203 RxFilterInfoList *filter_list = NULL, *last_entry = NULL;
1204
1205 QTAILQ_FOREACH(nc, &net_clients, next) {
1206 RxFilterInfoList *entry;
1207 RxFilterInfo *info;
1208
1209 if (has_name && strcmp(nc->name, name) != 0) {
1210 continue;
1211 }
1212
1213 /* only query rx-filter information of NIC */
1214 if (nc->info->type != NET_CLIENT_OPTIONS_KIND_NIC) {
1215 if (has_name) {
1216 error_setg(errp, "net client(%s) isn't a NIC", name);
Markus Armbruster9083da12014-04-24 15:44:18 +02001217 return NULL;
Amos Kongb1be4282013-06-14 15:45:52 +08001218 }
1219 continue;
1220 }
1221
1222 if (nc->info->query_rx_filter) {
1223 info = nc->info->query_rx_filter(nc);
1224 entry = g_malloc0(sizeof(*entry));
1225 entry->value = info;
1226
1227 if (!filter_list) {
1228 filter_list = entry;
1229 } else {
1230 last_entry->next = entry;
1231 }
1232 last_entry = entry;
1233 } else if (has_name) {
1234 error_setg(errp, "net client(%s) doesn't support"
1235 " rx-filter querying", name);
Markus Armbruster9083da12014-04-24 15:44:18 +02001236 return NULL;
Amos Kongb1be4282013-06-14 15:45:52 +08001237 }
Markus Armbruster638fb142014-04-24 15:44:17 +02001238
1239 if (has_name) {
1240 break;
1241 }
Amos Kongb1be4282013-06-14 15:45:52 +08001242 }
1243
Markus Armbruster9083da12014-04-24 15:44:18 +02001244 if (filter_list == NULL && has_name) {
Amos Kongb1be4282013-06-14 15:45:52 +08001245 error_setg(errp, "invalid net client name: %s", name);
1246 }
1247
1248 return filter_list;
1249}
1250
Markus Armbruster1ce6be22015-02-06 14:18:24 +01001251void hmp_info_network(Monitor *mon, const QDict *qdict)
aliguori63a01ef2008-10-31 19:10:00 +00001252{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +01001253 NetClientState *nc, *peer;
Laszlo Ersek2be64a62012-07-17 16:17:12 +02001254 NetClientOptionsKind type;
aliguori63a01ef2008-10-31 19:10:00 +00001255
Zhi Yong Wu1a859592012-07-24 16:35:16 +01001256 net_hub_info(mon);
Mark McLoughlin5610c3a2009-10-08 19:58:23 +01001257
Stefan Hajnoczi35277d12012-07-24 16:35:14 +01001258 QTAILQ_FOREACH(nc, &net_clients, next) {
1259 peer = nc->peer;
1260 type = nc->info->type;
Zhi Yong Wu1a859592012-07-24 16:35:16 +01001261
1262 /* Skip if already printed in hub info */
1263 if (net_hub_id_for_client(nc, NULL) == 0) {
1264 continue;
Mark McLoughlin5610c3a2009-10-08 19:58:23 +01001265 }
Zhi Yong Wu1a859592012-07-24 16:35:16 +01001266
Laszlo Ersek2be64a62012-07-17 16:17:12 +02001267 if (!peer || type == NET_CLIENT_OPTIONS_KIND_NIC) {
Stefan Hajnoczi35277d12012-07-24 16:35:14 +01001268 print_net_client(mon, nc);
Jan Kiszka19061e62011-07-20 12:20:19 +02001269 } /* else it's a netdev connected to a NIC, printed with the NIC */
Laszlo Ersek2be64a62012-07-17 16:17:12 +02001270 if (peer && type == NET_CLIENT_OPTIONS_KIND_NIC) {
Zhi Yong Wu1a859592012-07-24 16:35:16 +01001271 monitor_printf(mon, " \\ ");
Jan Kiszka44e798d2011-07-20 12:20:21 +02001272 print_net_client(mon, peer);
Markus Armbrustera0104e02010-02-11 14:45:01 +01001273 }
Markus Armbrustera0104e02010-02-11 14:45:01 +01001274 }
aliguori63a01ef2008-10-31 19:10:00 +00001275}
1276
Luiz Capitulino4b371562011-11-23 13:11:55 -02001277void qmp_set_link(const char *name, bool up, Error **errp)
aliguori436e5e52009-01-08 19:44:06 +00001278{
Jason Wang1ceef9f2013-01-30 19:12:28 +08001279 NetClientState *ncs[MAX_QUEUE_NUM];
1280 NetClientState *nc;
1281 int queues, i;
aliguori436e5e52009-01-08 19:44:06 +00001282
Jason Wang1ceef9f2013-01-30 19:12:28 +08001283 queues = qemu_find_net_clients_except(name, ncs,
1284 NET_CLIENT_OPTIONS_KIND_MAX,
1285 MAX_QUEUE_NUM);
1286
1287 if (queues == 0) {
Markus Armbruster75158eb2015-03-16 08:57:47 +01001288 error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
1289 "Device '%s' not found", name);
Luiz Capitulino4b371562011-11-23 13:11:55 -02001290 return;
aliguori436e5e52009-01-08 19:44:06 +00001291 }
Jason Wang1ceef9f2013-01-30 19:12:28 +08001292 nc = ncs[0];
aliguori436e5e52009-01-08 19:44:06 +00001293
Jason Wang1ceef9f2013-01-30 19:12:28 +08001294 for (i = 0; i < queues; i++) {
1295 ncs[i]->link_down = !up;
1296 }
aliguori436e5e52009-01-08 19:44:06 +00001297
Stefan Hajnoczi35277d12012-07-24 16:35:14 +01001298 if (nc->info->link_status_changed) {
1299 nc->info->link_status_changed(nc);
Mark McLoughlin665a3b02009-11-25 18:49:30 +00001300 }
Michael S. Tsirkinab1cbe12011-02-09 18:45:04 +02001301
Vlad Yasevich02d38fc2013-11-21 21:05:51 -05001302 if (nc->peer) {
1303 /* Change peer link only if the peer is NIC and then notify peer.
1304 * If the peer is a HUBPORT or a backend, we do not change the
1305 * link status.
1306 *
1307 * This behavior is compatible with qemu vlans where there could be
1308 * multiple clients that can still communicate with each other in
1309 * disconnected mode. For now maintain this compatibility.
1310 */
1311 if (nc->peer->info->type == NET_CLIENT_OPTIONS_KIND_NIC) {
1312 for (i = 0; i < queues; i++) {
1313 ncs[i]->peer->link_down = !up;
1314 }
1315 }
1316 if (nc->peer->info->link_status_changed) {
1317 nc->peer->info->link_status_changed(nc->peer);
1318 }
Michael S. Tsirkinab1cbe12011-02-09 18:45:04 +02001319 }
aliguori436e5e52009-01-08 19:44:06 +00001320}
1321
Michael S. Tsirkinca77d852014-09-04 11:39:13 +03001322static void net_vm_change_state_handler(void *opaque, int running,
1323 RunState state)
1324{
Fam Zheng625de442015-07-07 09:21:07 +08001325 NetClientState *nc;
1326 NetClientState *tmp;
Michael S. Tsirkinca77d852014-09-04 11:39:13 +03001327
Fam Zheng625de442015-07-07 09:21:07 +08001328 QTAILQ_FOREACH_SAFE(nc, &net_clients, next, tmp) {
1329 if (running) {
1330 /* Flush queued packets and wake up backends. */
1331 if (nc->peer && qemu_can_send_packet(nc)) {
1332 qemu_flush_queued_packets(nc->peer);
1333 }
1334 } else {
1335 /* Complete all queued packets, to guarantee we don't modify
1336 * state later when VM is not running.
1337 */
Michael S. Tsirkinca77d852014-09-04 11:39:13 +03001338 qemu_flush_or_purge_queued_packets(nc, true);
1339 }
1340 }
1341}
1342
aliguori63a01ef2008-10-31 19:10:00 +00001343void net_cleanup(void)
1344{
Jason Wang1ceef9f2013-01-30 19:12:28 +08001345 NetClientState *nc;
aliguori63a01ef2008-10-31 19:10:00 +00001346
Jason Wang1ceef9f2013-01-30 19:12:28 +08001347 /* We may del multiple entries during qemu_del_net_client(),
1348 * so QTAILQ_FOREACH_SAFE() is also not safe here.
1349 */
1350 while (!QTAILQ_EMPTY(&net_clients)) {
1351 nc = QTAILQ_FIRST(&net_clients);
Jason Wang948ecf22013-01-30 19:12:24 +08001352 if (nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC) {
1353 qemu_del_nic(qemu_get_nic(nc));
1354 } else {
1355 qemu_del_net_client(nc);
1356 }
Mark McLoughlin577c4af2009-10-08 19:58:28 +01001357 }
Michael S. Tsirkinca77d852014-09-04 11:39:13 +03001358
1359 qemu_del_vm_change_state_handler(net_change_state_entry);
aliguori63a01ef2008-10-31 19:10:00 +00001360}
1361
Markus Armbruster668680f2010-02-11 14:44:58 +01001362void net_check_clients(void)
aliguori63a01ef2008-10-31 19:10:00 +00001363{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +01001364 NetClientState *nc;
Peter Maydell48e2faf2011-05-20 16:50:01 +01001365 int i;
aliguori63a01ef2008-10-31 19:10:00 +00001366
Peter Maydell641f6ea2011-05-20 16:50:00 +01001367 /* Don't warn about the default network setup that you get if
1368 * no command line -net or -netdev options are specified. There
1369 * are two cases that we would otherwise complain about:
1370 * (1) board doesn't support a NIC but the implicit "-net nic"
1371 * requested one
1372 * (2) CONFIG_SLIRP not set, in which case the implicit "-net nic"
1373 * sets up a nic that isn't connected to anything.
1374 */
1375 if (default_net) {
1376 return;
1377 }
1378
Stefan Hajnoczi81017642012-07-24 16:35:07 +01001379 net_hub_check_clients();
Tristan Gingoldac60cc12011-03-15 14:20:54 +01001380
Stefan Hajnoczi35277d12012-07-24 16:35:14 +01001381 QTAILQ_FOREACH(nc, &net_clients, next) {
1382 if (!nc->peer) {
Markus Armbrusterefe32fd2010-02-11 14:45:00 +01001383 fprintf(stderr, "Warning: %s %s has no peer\n",
Stefan Hajnoczi35277d12012-07-24 16:35:14 +01001384 nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC ?
1385 "nic" : "netdev", nc->name);
Markus Armbrusterefe32fd2010-02-11 14:45:00 +01001386 }
1387 }
Peter Maydell48e2faf2011-05-20 16:50:01 +01001388
1389 /* Check that all NICs requested via -net nic actually got created.
1390 * NICs created via -device don't need to be checked here because
1391 * they are always instantiated.
1392 */
1393 for (i = 0; i < MAX_NICS; i++) {
1394 NICInfo *nd = &nd_table[i];
1395 if (nd->used && !nd->instantiated) {
1396 fprintf(stderr, "Warning: requested NIC (%s, model %s) "
1397 "was not created (not supported by this machine?)\n",
1398 nd->name ? nd->name : "anonymous",
1399 nd->model ? nd->model : "unspecified");
1400 }
1401 }
aliguori63a01ef2008-10-31 19:10:00 +00001402}
Mark McLoughlindc1c9fe2009-10-06 12:17:16 +01001403
Markus Armbruster28d0de72015-03-13 13:35:14 +01001404static int net_init_client(void *dummy, QemuOpts *opts, Error **errp)
Mark McLoughlindc1c9fe2009-10-06 12:17:16 +01001405{
Luiz Capitulino4559a1d2012-04-20 16:50:25 -03001406 Error *local_err = NULL;
1407
1408 net_client_init(opts, 0, &local_err);
Markus Armbruster84d18f02014-01-30 15:07:28 +01001409 if (local_err) {
Markus Armbruster12d0cc22015-02-10 15:02:06 +01001410 error_report_err(local_err);
Mark McLoughlinc1671a02009-10-12 09:52:00 +01001411 return -1;
Luiz Capitulino4559a1d2012-04-20 16:50:25 -03001412 }
1413
Mark McLoughlinc1671a02009-10-12 09:52:00 +01001414 return 0;
Mark McLoughlinf6b134a2009-10-08 19:58:27 +01001415}
1416
Markus Armbruster28d0de72015-03-13 13:35:14 +01001417static int net_init_netdev(void *dummy, QemuOpts *opts, Error **errp)
Mark McLoughlinf6b134a2009-10-08 19:58:27 +01001418{
Luiz Capitulino4559a1d2012-04-20 16:50:25 -03001419 Error *local_err = NULL;
1420 int ret;
1421
1422 ret = net_client_init(opts, 1, &local_err);
Markus Armbruster84d18f02014-01-30 15:07:28 +01001423 if (local_err) {
Markus Armbruster12d0cc22015-02-10 15:02:06 +01001424 error_report_err(local_err);
Luiz Capitulino4559a1d2012-04-20 16:50:25 -03001425 return -1;
1426 }
1427
1428 return ret;
Mark McLoughlindc1c9fe2009-10-06 12:17:16 +01001429}
1430
1431int net_init_clients(void)
1432{
Gerd Hoffmann3329f072010-08-20 13:52:01 +02001433 QemuOptsList *net = qemu_find_opts("net");
1434
Gerd Hoffmanncb4522c2009-12-08 13:11:47 +01001435 if (default_net) {
Mark McLoughlindc1c9fe2009-10-06 12:17:16 +01001436 /* if no clients, we use a default config */
Markus Armbruster79087c72015-02-12 17:07:34 +01001437 qemu_opts_set(net, NULL, "type", "nic", &error_abort);
Mark McLoughlindc1c9fe2009-10-06 12:17:16 +01001438#ifdef CONFIG_SLIRP
Markus Armbruster79087c72015-02-12 17:07:34 +01001439 qemu_opts_set(net, NULL, "type", "user", &error_abort);
Mark McLoughlindc1c9fe2009-10-06 12:17:16 +01001440#endif
1441 }
1442
Michael S. Tsirkinca77d852014-09-04 11:39:13 +03001443 net_change_state_entry =
1444 qemu_add_vm_change_state_handler(net_vm_change_state_handler, NULL);
1445
Stefan Hajnoczi94878992012-07-24 16:35:12 +01001446 QTAILQ_INIT(&net_clients);
Mark McLoughlin5610c3a2009-10-08 19:58:23 +01001447
Markus Armbruster28d0de72015-03-13 13:35:14 +01001448 if (qemu_opts_foreach(qemu_find_opts("netdev"),
1449 net_init_netdev, NULL, NULL)) {
Mark McLoughlinf6b134a2009-10-08 19:58:27 +01001450 return -1;
Markus Armbrustera4c73672015-03-13 11:07:24 +01001451 }
Mark McLoughlinf6b134a2009-10-08 19:58:27 +01001452
Markus Armbruster28d0de72015-03-13 13:35:14 +01001453 if (qemu_opts_foreach(net, net_init_client, NULL, NULL)) {
Mark McLoughlindc1c9fe2009-10-06 12:17:16 +01001454 return -1;
1455 }
1456
Mark McLoughlindc1c9fe2009-10-06 12:17:16 +01001457 return 0;
1458}
1459
Mark McLoughlin7f161aa2009-10-08 19:58:25 +01001460int net_client_parse(QemuOptsList *opts_list, const char *optarg)
Mark McLoughlindc1c9fe2009-10-06 12:17:16 +01001461{
Juan Quintelaa3a766e2009-10-07 23:44:15 +02001462#if defined(CONFIG_SLIRP)
Mark McLoughlin68ac40d2009-11-25 18:48:54 +00001463 int ret;
1464 if (net_slirp_parse_legacy(opts_list, optarg, &ret)) {
Mark McLoughlindc1c9fe2009-10-06 12:17:16 +01001465 return ret;
1466 }
Juan Quintelaa3a766e2009-10-07 23:44:15 +02001467#endif
Mark McLoughlin68ac40d2009-11-25 18:48:54 +00001468
Markus Armbruster70b94332015-02-13 12:50:26 +01001469 if (!qemu_opts_parse_noisily(opts_list, optarg, true)) {
Mark McLoughlindc1c9fe2009-10-06 12:17:16 +01001470 return -1;
1471 }
1472
Gerd Hoffmanncb4522c2009-12-08 13:11:47 +01001473 default_net = 0;
Mark McLoughlindc1c9fe2009-10-06 12:17:16 +01001474 return 0;
1475}
Jason Wang7fc8d912012-03-05 11:08:50 +08001476
1477/* From FreeBSD */
1478/* XXX: optimize */
1479unsigned compute_mcast_idx(const uint8_t *ep)
1480{
1481 uint32_t crc;
1482 int carry, i, j;
1483 uint8_t b;
1484
1485 crc = 0xffffffff;
1486 for (i = 0; i < 6; i++) {
1487 b = *ep++;
1488 for (j = 0; j < 8; j++) {
1489 carry = ((crc & 0x80000000L) ? 1 : 0) ^ (b & 0x01);
1490 crc <<= 1;
1491 b >>= 1;
1492 if (carry) {
1493 crc = ((crc ^ POLYNOMIAL) | carry);
1494 }
1495 }
1496 }
1497 return crc >> 26;
1498}
Paolo Bonzini4d454572012-11-26 16:03:42 +01001499
1500QemuOptsList qemu_netdev_opts = {
1501 .name = "netdev",
1502 .implied_opt_name = "type",
1503 .head = QTAILQ_HEAD_INITIALIZER(qemu_netdev_opts.head),
1504 .desc = {
1505 /*
1506 * no elements => accept any params
1507 * validation will happen later
1508 */
1509 { /* end of list */ }
1510 },
1511};
1512
1513QemuOptsList qemu_net_opts = {
1514 .name = "net",
1515 .implied_opt_name = "type",
1516 .head = QTAILQ_HEAD_INITIALIZER(qemu_net_opts.head),
1517 .desc = {
1518 /*
1519 * no elements => accept any params
1520 * validation will happen later
1521 */
1522 { /* end of list */ }
1523 },
1524};