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Commit | Line | Data |
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63a01ef8 AL |
1 | /* |
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 | */ | |
d40cdb10 BS |
24 | #include "config-host.h" |
25 | ||
1422e32d | 26 | #include "net/net.h" |
fd9400b3 PB |
27 | #include "clients.h" |
28 | #include "hub.h" | |
1422e32d | 29 | #include "net/slirp.h" |
d60b20cf | 30 | #include "net/eth.h" |
fd9400b3 | 31 | #include "util.h" |
a245fc18 | 32 | |
83c9089e | 33 | #include "monitor/monitor.h" |
1df49e04 | 34 | #include "qemu-common.h" |
1de7afc9 PB |
35 | #include "qemu/sockets.h" |
36 | #include "qemu/config-file.h" | |
4b37156c | 37 | #include "qmp-commands.h" |
75422b0d | 38 | #include "hw/qdev.h" |
1de7afc9 | 39 | #include "qemu/iov.h" |
6a1751b7 | 40 | #include "qemu/main-loop.h" |
6687b79d LE |
41 | #include "qapi-visit.h" |
42 | #include "qapi/opts-visitor.h" | |
7b1b5d19 | 43 | #include "qapi/dealloc-visitor.h" |
511d2b14 | 44 | |
2944e4ec SW |
45 | /* Net bridge is currently not supported for W32. */ |
46 | #if !defined(_WIN32) | |
47 | # define CONFIG_NET_BRIDGE | |
48 | #endif | |
49 | ||
4e68f7a0 | 50 | static QTAILQ_HEAD(, NetClientState) net_clients; |
63a01ef8 | 51 | |
cb4522cc GH |
52 | int default_net = 1; |
53 | ||
63a01ef8 AL |
54 | /***********************************************************/ |
55 | /* network device redirectors */ | |
56 | ||
68ac40d2 | 57 | #if defined(DEBUG_NET) |
63a01ef8 AL |
58 | static void hex_dump(FILE *f, const uint8_t *buf, int size) |
59 | { | |
60 | int len, i, j, c; | |
61 | ||
62 | for(i=0;i<size;i+=16) { | |
63 | len = size - i; | |
64 | if (len > 16) | |
65 | len = 16; | |
66 | fprintf(f, "%08x ", i); | |
67 | for(j=0;j<16;j++) { | |
68 | if (j < len) | |
69 | fprintf(f, " %02x", buf[i+j]); | |
70 | else | |
71 | fprintf(f, " "); | |
72 | } | |
73 | fprintf(f, " "); | |
74 | for(j=0;j<len;j++) { | |
75 | c = buf[i+j]; | |
76 | if (c < ' ' || c > '~') | |
77 | c = '.'; | |
78 | fprintf(f, "%c", c); | |
79 | } | |
80 | fprintf(f, "\n"); | |
81 | } | |
82 | } | |
83 | #endif | |
84 | ||
63a01ef8 AL |
85 | static int get_str_sep(char *buf, int buf_size, const char **pp, int sep) |
86 | { | |
87 | const char *p, *p1; | |
88 | int len; | |
89 | p = *pp; | |
90 | p1 = strchr(p, sep); | |
91 | if (!p1) | |
92 | return -1; | |
93 | len = p1 - p; | |
94 | p1++; | |
95 | if (buf_size > 0) { | |
96 | if (len > buf_size - 1) | |
97 | len = buf_size - 1; | |
98 | memcpy(buf, p, len); | |
99 | buf[len] = '\0'; | |
100 | } | |
101 | *pp = p1; | |
102 | return 0; | |
103 | } | |
104 | ||
63a01ef8 AL |
105 | int parse_host_port(struct sockaddr_in *saddr, const char *str) |
106 | { | |
107 | char buf[512]; | |
108 | struct hostent *he; | |
109 | const char *p, *r; | |
110 | int port; | |
111 | ||
112 | p = str; | |
113 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) | |
114 | return -1; | |
115 | saddr->sin_family = AF_INET; | |
116 | if (buf[0] == '\0') { | |
117 | saddr->sin_addr.s_addr = 0; | |
118 | } else { | |
cd390083 | 119 | if (qemu_isdigit(buf[0])) { |
63a01ef8 AL |
120 | if (!inet_aton(buf, &saddr->sin_addr)) |
121 | return -1; | |
122 | } else { | |
123 | if ((he = gethostbyname(buf)) == NULL) | |
124 | return - 1; | |
125 | saddr->sin_addr = *(struct in_addr *)he->h_addr; | |
126 | } | |
127 | } | |
128 | port = strtol(p, (char **)&r, 0); | |
129 | if (r == p) | |
130 | return -1; | |
131 | saddr->sin_port = htons(port); | |
132 | return 0; | |
133 | } | |
134 | ||
35277d14 | 135 | void qemu_format_nic_info_str(NetClientState *nc, uint8_t macaddr[6]) |
7cb7434b | 136 | { |
35277d14 | 137 | snprintf(nc->info_str, sizeof(nc->info_str), |
4dda4063 | 138 | "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x", |
35277d14 | 139 | nc->model, |
7cb7434b AL |
140 | macaddr[0], macaddr[1], macaddr[2], |
141 | macaddr[3], macaddr[4], macaddr[5]); | |
142 | } | |
143 | ||
76d32cba GH |
144 | void qemu_macaddr_default_if_unset(MACAddr *macaddr) |
145 | { | |
146 | static int index = 0; | |
147 | static const MACAddr zero = { .a = { 0,0,0,0,0,0 } }; | |
148 | ||
149 | if (memcmp(macaddr, &zero, sizeof(zero)) != 0) | |
150 | return; | |
151 | macaddr->a[0] = 0x52; | |
152 | macaddr->a[1] = 0x54; | |
153 | macaddr->a[2] = 0x00; | |
154 | macaddr->a[3] = 0x12; | |
155 | macaddr->a[4] = 0x34; | |
156 | macaddr->a[5] = 0x56 + index++; | |
157 | } | |
158 | ||
d33d93b2 SH |
159 | /** |
160 | * Generate a name for net client | |
161 | * | |
c963530a | 162 | * Only net clients created with the legacy -net option and NICs need this. |
d33d93b2 | 163 | */ |
35277d14 | 164 | static char *assign_name(NetClientState *nc1, const char *model) |
676cff29 | 165 | { |
35277d14 | 166 | NetClientState *nc; |
676cff29 AL |
167 | char buf[256]; |
168 | int id = 0; | |
169 | ||
35277d14 SH |
170 | QTAILQ_FOREACH(nc, &net_clients, next) { |
171 | if (nc == nc1) { | |
d33d93b2 | 172 | continue; |
5610c3aa | 173 | } |
c963530a | 174 | if (strcmp(nc->model, model) == 0) { |
53e51d85 MA |
175 | id++; |
176 | } | |
177 | } | |
178 | ||
676cff29 AL |
179 | snprintf(buf, sizeof(buf), "%s.%d", model, id); |
180 | ||
7267c094 | 181 | return g_strdup(buf); |
676cff29 AL |
182 | } |
183 | ||
f7860455 JW |
184 | static void qemu_net_client_destructor(NetClientState *nc) |
185 | { | |
186 | g_free(nc); | |
187 | } | |
188 | ||
18a1541a JW |
189 | static void qemu_net_client_setup(NetClientState *nc, |
190 | NetClientInfo *info, | |
191 | NetClientState *peer, | |
192 | const char *model, | |
f7860455 JW |
193 | const char *name, |
194 | NetClientDestructor *destructor) | |
63a01ef8 | 195 | { |
35277d14 SH |
196 | nc->info = info; |
197 | nc->model = g_strdup(model); | |
45460d1a | 198 | if (name) { |
35277d14 | 199 | nc->name = g_strdup(name); |
45460d1a | 200 | } else { |
35277d14 | 201 | nc->name = assign_name(nc, model); |
45460d1a | 202 | } |
5610c3aa | 203 | |
ab5f3f84 SH |
204 | if (peer) { |
205 | assert(!peer->peer); | |
35277d14 SH |
206 | nc->peer = peer; |
207 | peer->peer = nc; | |
d80b9fc6 | 208 | } |
35277d14 | 209 | QTAILQ_INSERT_TAIL(&net_clients, nc, next); |
63a01ef8 | 210 | |
067404be | 211 | nc->incoming_queue = qemu_new_net_queue(nc); |
f7860455 | 212 | nc->destructor = destructor; |
18a1541a JW |
213 | } |
214 | ||
215 | NetClientState *qemu_new_net_client(NetClientInfo *info, | |
216 | NetClientState *peer, | |
217 | const char *model, | |
218 | const char *name) | |
219 | { | |
220 | NetClientState *nc; | |
221 | ||
222 | assert(info->size >= sizeof(NetClientState)); | |
223 | ||
224 | nc = g_malloc0(info->size); | |
f7860455 JW |
225 | qemu_net_client_setup(nc, info, peer, model, name, |
226 | qemu_net_client_destructor); | |
18a1541a | 227 | |
35277d14 | 228 | return nc; |
63a01ef8 AL |
229 | } |
230 | ||
ebef2c09 MM |
231 | NICState *qemu_new_nic(NetClientInfo *info, |
232 | NICConf *conf, | |
233 | const char *model, | |
234 | const char *name, | |
235 | void *opaque) | |
236 | { | |
1ceef9f2 | 237 | NetClientState **peers = conf->peers.ncs; |
ebef2c09 | 238 | NICState *nic; |
f6b26cf2 | 239 | int i, queues = MAX(1, conf->queues); |
ebef2c09 | 240 | |
2be64a68 | 241 | assert(info->type == NET_CLIENT_OPTIONS_KIND_NIC); |
ebef2c09 MM |
242 | assert(info->size >= sizeof(NICState)); |
243 | ||
f6b26cf2 JW |
244 | nic = g_malloc0(info->size + sizeof(NetClientState) * queues); |
245 | nic->ncs = (void *)nic + info->size; | |
ebef2c09 MM |
246 | nic->conf = conf; |
247 | nic->opaque = opaque; | |
248 | ||
f6b26cf2 JW |
249 | for (i = 0; i < queues; i++) { |
250 | qemu_net_client_setup(&nic->ncs[i], info, peers[i], model, name, | |
1ceef9f2 JW |
251 | NULL); |
252 | nic->ncs[i].queue_index = i; | |
253 | } | |
254 | ||
ebef2c09 MM |
255 | return nic; |
256 | } | |
257 | ||
1ceef9f2 JW |
258 | NetClientState *qemu_get_subqueue(NICState *nic, int queue_index) |
259 | { | |
f6b26cf2 | 260 | return nic->ncs + queue_index; |
1ceef9f2 JW |
261 | } |
262 | ||
b356f76d JW |
263 | NetClientState *qemu_get_queue(NICState *nic) |
264 | { | |
1ceef9f2 | 265 | return qemu_get_subqueue(nic, 0); |
b356f76d JW |
266 | } |
267 | ||
cc1f0f45 JW |
268 | NICState *qemu_get_nic(NetClientState *nc) |
269 | { | |
1ceef9f2 JW |
270 | NetClientState *nc0 = nc - nc->queue_index; |
271 | ||
f6b26cf2 | 272 | return (NICState *)((void *)nc0 - nc->info->size); |
cc1f0f45 JW |
273 | } |
274 | ||
275 | void *qemu_get_nic_opaque(NetClientState *nc) | |
276 | { | |
277 | NICState *nic = qemu_get_nic(nc); | |
278 | ||
279 | return nic->opaque; | |
280 | } | |
281 | ||
b20c6b9e | 282 | static void qemu_cleanup_net_client(NetClientState *nc) |
63a01ef8 | 283 | { |
35277d14 | 284 | QTAILQ_REMOVE(&net_clients, nc, next); |
63a01ef8 | 285 | |
cc2a9043 AF |
286 | if (nc->info->cleanup) { |
287 | nc->info->cleanup(nc); | |
288 | } | |
a083a89d | 289 | } |
5610c3aa | 290 | |
b20c6b9e | 291 | static void qemu_free_net_client(NetClientState *nc) |
a083a89d | 292 | { |
067404be JK |
293 | if (nc->incoming_queue) { |
294 | qemu_del_net_queue(nc->incoming_queue); | |
a005d073 | 295 | } |
35277d14 SH |
296 | if (nc->peer) { |
297 | nc->peer->peer = NULL; | |
a083a89d | 298 | } |
35277d14 SH |
299 | g_free(nc->name); |
300 | g_free(nc->model); | |
f7860455 JW |
301 | if (nc->destructor) { |
302 | nc->destructor(nc); | |
303 | } | |
63a01ef8 AL |
304 | } |
305 | ||
b20c6b9e | 306 | void qemu_del_net_client(NetClientState *nc) |
a083a89d | 307 | { |
1ceef9f2 JW |
308 | NetClientState *ncs[MAX_QUEUE_NUM]; |
309 | int queues, i; | |
310 | ||
311 | /* If the NetClientState belongs to a multiqueue backend, we will change all | |
312 | * other NetClientStates also. | |
313 | */ | |
314 | queues = qemu_find_net_clients_except(nc->name, ncs, | |
315 | NET_CLIENT_OPTIONS_KIND_NIC, | |
316 | MAX_QUEUE_NUM); | |
317 | assert(queues != 0); | |
318 | ||
a083a89d | 319 | /* If there is a peer NIC, delete and cleanup client, but do not free. */ |
35277d14 | 320 | if (nc->peer && nc->peer->info->type == NET_CLIENT_OPTIONS_KIND_NIC) { |
cc1f0f45 | 321 | NICState *nic = qemu_get_nic(nc->peer); |
a083a89d MT |
322 | if (nic->peer_deleted) { |
323 | return; | |
324 | } | |
325 | nic->peer_deleted = true; | |
1ceef9f2 JW |
326 | |
327 | for (i = 0; i < queues; i++) { | |
328 | ncs[i]->peer->link_down = true; | |
329 | } | |
330 | ||
35277d14 SH |
331 | if (nc->peer->info->link_status_changed) { |
332 | nc->peer->info->link_status_changed(nc->peer); | |
a083a89d | 333 | } |
1ceef9f2 JW |
334 | |
335 | for (i = 0; i < queues; i++) { | |
336 | qemu_cleanup_net_client(ncs[i]); | |
337 | } | |
338 | ||
a083a89d MT |
339 | return; |
340 | } | |
341 | ||
948ecf21 JW |
342 | assert(nc->info->type != NET_CLIENT_OPTIONS_KIND_NIC); |
343 | ||
1ceef9f2 JW |
344 | for (i = 0; i < queues; i++) { |
345 | qemu_cleanup_net_client(ncs[i]); | |
346 | qemu_free_net_client(ncs[i]); | |
347 | } | |
948ecf21 JW |
348 | } |
349 | ||
350 | void qemu_del_nic(NICState *nic) | |
351 | { | |
b8904921 | 352 | int i, queues = MAX(nic->conf->queues, 1); |
1ceef9f2 | 353 | |
a083a89d | 354 | /* If this is a peer NIC and peer has already been deleted, free it now. */ |
1ceef9f2 JW |
355 | if (nic->peer_deleted) { |
356 | for (i = 0; i < queues; i++) { | |
357 | qemu_free_net_client(qemu_get_subqueue(nic, i)->peer); | |
1a609520 JK |
358 | } |
359 | } | |
1a609520 | 360 | |
1ceef9f2 JW |
361 | for (i = queues - 1; i >= 0; i--) { |
362 | NetClientState *nc = qemu_get_subqueue(nic, i); | |
363 | ||
364 | qemu_cleanup_net_client(nc); | |
365 | qemu_free_net_client(nc); | |
366 | } | |
f6b26cf2 JW |
367 | |
368 | g_free(nic); | |
1a609520 JK |
369 | } |
370 | ||
57f9ef17 MM |
371 | void qemu_foreach_nic(qemu_nic_foreach func, void *opaque) |
372 | { | |
4e68f7a0 | 373 | NetClientState *nc; |
57f9ef17 | 374 | |
94878994 | 375 | QTAILQ_FOREACH(nc, &net_clients, next) { |
2be64a68 | 376 | if (nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC) { |
1ceef9f2 JW |
377 | if (nc->queue_index == 0) { |
378 | func(qemu_get_nic(nc), opaque); | |
379 | } | |
57f9ef17 MM |
380 | } |
381 | } | |
57f9ef17 MM |
382 | } |
383 | ||
4e68f7a0 | 384 | int qemu_can_send_packet(NetClientState *sender) |
63a01ef8 | 385 | { |
a005d073 | 386 | if (!sender->peer) { |
d80b9fc6 MM |
387 | return 1; |
388 | } | |
389 | ||
a005d073 SH |
390 | if (sender->peer->receive_disabled) { |
391 | return 0; | |
392 | } else if (sender->peer->info->can_receive && | |
393 | !sender->peer->info->can_receive(sender->peer)) { | |
394 | return 0; | |
63a01ef8 | 395 | } |
60c07d93 | 396 | return 1; |
63a01ef8 AL |
397 | } |
398 | ||
86a77c38 ZYW |
399 | ssize_t qemu_deliver_packet(NetClientState *sender, |
400 | unsigned flags, | |
401 | const uint8_t *data, | |
402 | size_t size, | |
403 | void *opaque) | |
9a6ecb30 | 404 | { |
35277d14 | 405 | NetClientState *nc = opaque; |
893379ef | 406 | ssize_t ret; |
9a6ecb30 | 407 | |
35277d14 | 408 | if (nc->link_down) { |
9a6ecb30 MM |
409 | return size; |
410 | } | |
411 | ||
35277d14 | 412 | if (nc->receive_disabled) { |
893379ef MM |
413 | return 0; |
414 | } | |
415 | ||
35277d14 SH |
416 | if (flags & QEMU_NET_PACKET_FLAG_RAW && nc->info->receive_raw) { |
417 | ret = nc->info->receive_raw(nc, data, size); | |
893379ef | 418 | } else { |
35277d14 | 419 | ret = nc->info->receive(nc, data, size); |
893379ef MM |
420 | } |
421 | ||
422 | if (ret == 0) { | |
35277d14 | 423 | nc->receive_disabled = 1; |
893379ef MM |
424 | }; |
425 | ||
426 | return ret; | |
9a6ecb30 MM |
427 | } |
428 | ||
35277d14 | 429 | void qemu_purge_queued_packets(NetClientState *nc) |
8cad5516 | 430 | { |
35277d14 | 431 | if (!nc->peer) { |
d80b9fc6 | 432 | return; |
9a6ecb30 | 433 | } |
d80b9fc6 | 434 | |
067404be | 435 | qemu_net_queue_purge(nc->peer->incoming_queue, nc); |
8cad5516 MM |
436 | } |
437 | ||
35277d14 | 438 | void qemu_flush_queued_packets(NetClientState *nc) |
e94667b9 | 439 | { |
35277d14 | 440 | nc->receive_disabled = 0; |
9a6ecb30 | 441 | |
199ee608 LR |
442 | if (nc->peer && nc->peer->info->type == NET_CLIENT_OPTIONS_KIND_HUBPORT) { |
443 | if (net_hub_flush(nc->peer)) { | |
444 | qemu_notify_event(); | |
445 | } | |
446 | return; | |
447 | } | |
067404be | 448 | if (qemu_net_queue_flush(nc->incoming_queue)) { |
987a9b48 PB |
449 | /* We emptied the queue successfully, signal to the IO thread to repoll |
450 | * the file descriptor (for tap, for example). | |
451 | */ | |
452 | qemu_notify_event(); | |
453 | } | |
e94667b9 MM |
454 | } |
455 | ||
4e68f7a0 | 456 | static ssize_t qemu_send_packet_async_with_flags(NetClientState *sender, |
ca77d175 MM |
457 | unsigned flags, |
458 | const uint8_t *buf, int size, | |
459 | NetPacketSent *sent_cb) | |
764a4d1d | 460 | { |
9a6ecb30 | 461 | NetQueue *queue; |
436e5e53 | 462 | |
63a01ef8 | 463 | #ifdef DEBUG_NET |
d80b9fc6 | 464 | printf("qemu_send_packet_async:\n"); |
63a01ef8 AL |
465 | hex_dump(stdout, buf, size); |
466 | #endif | |
f3b6c7fc | 467 | |
a005d073 | 468 | if (sender->link_down || !sender->peer) { |
9a6ecb30 MM |
469 | return size; |
470 | } | |
471 | ||
067404be | 472 | queue = sender->peer->incoming_queue; |
9a6ecb30 | 473 | |
ca77d175 MM |
474 | return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb); |
475 | } | |
476 | ||
4e68f7a0 | 477 | ssize_t qemu_send_packet_async(NetClientState *sender, |
ca77d175 MM |
478 | const uint8_t *buf, int size, |
479 | NetPacketSent *sent_cb) | |
480 | { | |
481 | return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE, | |
482 | buf, size, sent_cb); | |
f3b6c7fc MM |
483 | } |
484 | ||
35277d14 | 485 | void qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size) |
f3b6c7fc | 486 | { |
35277d14 | 487 | qemu_send_packet_async(nc, buf, size, NULL); |
63a01ef8 AL |
488 | } |
489 | ||
35277d14 | 490 | ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size) |
ca77d175 | 491 | { |
35277d14 | 492 | return qemu_send_packet_async_with_flags(nc, QEMU_NET_PACKET_FLAG_RAW, |
ca77d175 MM |
493 | buf, size, NULL); |
494 | } | |
495 | ||
35277d14 | 496 | static ssize_t nc_sendv_compat(NetClientState *nc, const struct iovec *iov, |
fbe78f4f AL |
497 | int iovcnt) |
498 | { | |
d32fcad3 | 499 | uint8_t buffer[NET_BUFSIZE]; |
ce053661 | 500 | size_t offset; |
fbe78f4f | 501 | |
dcf6f5e1 | 502 | offset = iov_to_buf(iov, iovcnt, 0, buffer, sizeof(buffer)); |
fbe78f4f | 503 | |
35277d14 | 504 | return nc->info->receive(nc, buffer, offset); |
fbe78f4f AL |
505 | } |
506 | ||
86a77c38 ZYW |
507 | ssize_t qemu_deliver_packet_iov(NetClientState *sender, |
508 | unsigned flags, | |
509 | const struct iovec *iov, | |
510 | int iovcnt, | |
511 | void *opaque) | |
9a6ecb30 | 512 | { |
35277d14 | 513 | NetClientState *nc = opaque; |
c67f5dc1 | 514 | int ret; |
9a6ecb30 | 515 | |
35277d14 | 516 | if (nc->link_down) { |
ce053661 | 517 | return iov_size(iov, iovcnt); |
9a6ecb30 MM |
518 | } |
519 | ||
c67f5dc1 SH |
520 | if (nc->receive_disabled) { |
521 | return 0; | |
522 | } | |
523 | ||
35277d14 | 524 | if (nc->info->receive_iov) { |
c67f5dc1 | 525 | ret = nc->info->receive_iov(nc, iov, iovcnt); |
9a6ecb30 | 526 | } else { |
c67f5dc1 SH |
527 | ret = nc_sendv_compat(nc, iov, iovcnt); |
528 | } | |
529 | ||
530 | if (ret == 0) { | |
531 | nc->receive_disabled = 1; | |
e94667b9 | 532 | } |
c67f5dc1 SH |
533 | |
534 | return ret; | |
e94667b9 MM |
535 | } |
536 | ||
4e68f7a0 | 537 | ssize_t qemu_sendv_packet_async(NetClientState *sender, |
f3b6c7fc MM |
538 | const struct iovec *iov, int iovcnt, |
539 | NetPacketSent *sent_cb) | |
e94667b9 | 540 | { |
9a6ecb30 MM |
541 | NetQueue *queue; |
542 | ||
a005d073 | 543 | if (sender->link_down || !sender->peer) { |
ce053661 | 544 | return iov_size(iov, iovcnt); |
e94667b9 MM |
545 | } |
546 | ||
067404be | 547 | queue = sender->peer->incoming_queue; |
9a6ecb30 | 548 | |
c0b8e49c MM |
549 | return qemu_net_queue_send_iov(queue, sender, |
550 | QEMU_NET_PACKET_FLAG_NONE, | |
551 | iov, iovcnt, sent_cb); | |
fbe78f4f AL |
552 | } |
553 | ||
f3b6c7fc | 554 | ssize_t |
35277d14 | 555 | qemu_sendv_packet(NetClientState *nc, const struct iovec *iov, int iovcnt) |
f3b6c7fc | 556 | { |
35277d14 | 557 | return qemu_sendv_packet_async(nc, iov, iovcnt, NULL); |
63a01ef8 AL |
558 | } |
559 | ||
4e68f7a0 | 560 | NetClientState *qemu_find_netdev(const char *id) |
5869c4d5 | 561 | { |
35277d14 | 562 | NetClientState *nc; |
5869c4d5 | 563 | |
35277d14 SH |
564 | QTAILQ_FOREACH(nc, &net_clients, next) { |
565 | if (nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC) | |
85dde9a9 | 566 | continue; |
35277d14 SH |
567 | if (!strcmp(nc->name, id)) { |
568 | return nc; | |
5869c4d5 MM |
569 | } |
570 | } | |
571 | ||
572 | return NULL; | |
573 | } | |
574 | ||
6c51ae73 JW |
575 | int qemu_find_net_clients_except(const char *id, NetClientState **ncs, |
576 | NetClientOptionsKind type, int max) | |
577 | { | |
578 | NetClientState *nc; | |
579 | int ret = 0; | |
580 | ||
581 | QTAILQ_FOREACH(nc, &net_clients, next) { | |
582 | if (nc->info->type == type) { | |
583 | continue; | |
584 | } | |
585 | if (!strcmp(nc->name, id)) { | |
586 | if (ret < max) { | |
587 | ncs[ret] = nc; | |
588 | } | |
589 | ret++; | |
590 | } | |
591 | } | |
592 | ||
593 | return ret; | |
594 | } | |
595 | ||
7697079b AL |
596 | static int nic_get_free_idx(void) |
597 | { | |
598 | int index; | |
599 | ||
600 | for (index = 0; index < MAX_NICS; index++) | |
601 | if (!nd_table[index].used) | |
602 | return index; | |
603 | return -1; | |
604 | } | |
605 | ||
07caea31 MA |
606 | int qemu_show_nic_models(const char *arg, const char *const *models) |
607 | { | |
608 | int i; | |
609 | ||
c8057f95 | 610 | if (!arg || !is_help_option(arg)) { |
07caea31 | 611 | return 0; |
c8057f95 | 612 | } |
07caea31 MA |
613 | |
614 | fprintf(stderr, "qemu: Supported NIC models: "); | |
615 | for (i = 0 ; models[i]; i++) | |
616 | fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n'); | |
617 | return 1; | |
618 | } | |
619 | ||
d07f22c5 AL |
620 | void qemu_check_nic_model(NICInfo *nd, const char *model) |
621 | { | |
622 | const char *models[2]; | |
623 | ||
624 | models[0] = model; | |
625 | models[1] = NULL; | |
626 | ||
07caea31 MA |
627 | if (qemu_show_nic_models(nd->model, models)) |
628 | exit(0); | |
629 | if (qemu_find_nic_model(nd, models, model) < 0) | |
630 | exit(1); | |
d07f22c5 AL |
631 | } |
632 | ||
07caea31 MA |
633 | int qemu_find_nic_model(NICInfo *nd, const char * const *models, |
634 | const char *default_model) | |
d07f22c5 | 635 | { |
07caea31 | 636 | int i; |
d07f22c5 AL |
637 | |
638 | if (!nd->model) | |
7267c094 | 639 | nd->model = g_strdup(default_model); |
d07f22c5 | 640 | |
07caea31 MA |
641 | for (i = 0 ; models[i]; i++) { |
642 | if (strcmp(nd->model, models[i]) == 0) | |
643 | return i; | |
d07f22c5 AL |
644 | } |
645 | ||
6daf194d | 646 | error_report("Unsupported NIC model: %s", nd->model); |
07caea31 | 647 | return -1; |
d07f22c5 AL |
648 | } |
649 | ||
1a0c0958 | 650 | static int net_init_nic(const NetClientOptions *opts, const char *name, |
4e68f7a0 | 651 | NetClientState *peer) |
f83c6e10 MM |
652 | { |
653 | int idx; | |
654 | NICInfo *nd; | |
2456f36f LE |
655 | const NetLegacyNicOptions *nic; |
656 | ||
657 | assert(opts->kind == NET_CLIENT_OPTIONS_KIND_NIC); | |
658 | nic = opts->nic; | |
f83c6e10 MM |
659 | |
660 | idx = nic_get_free_idx(); | |
661 | if (idx == -1 || nb_nics >= MAX_NICS) { | |
1ecda02b | 662 | error_report("Too Many NICs"); |
f83c6e10 MM |
663 | return -1; |
664 | } | |
665 | ||
666 | nd = &nd_table[idx]; | |
667 | ||
668 | memset(nd, 0, sizeof(*nd)); | |
669 | ||
2456f36f LE |
670 | if (nic->has_netdev) { |
671 | nd->netdev = qemu_find_netdev(nic->netdev); | |
5869c4d5 | 672 | if (!nd->netdev) { |
2456f36f | 673 | error_report("netdev '%s' not found", nic->netdev); |
5869c4d5 MM |
674 | return -1; |
675 | } | |
676 | } else { | |
d33d93b2 SH |
677 | assert(peer); |
678 | nd->netdev = peer; | |
5869c4d5 | 679 | } |
c64f50d1 | 680 | nd->name = g_strdup(name); |
2456f36f LE |
681 | if (nic->has_model) { |
682 | nd->model = g_strdup(nic->model); | |
f83c6e10 | 683 | } |
2456f36f LE |
684 | if (nic->has_addr) { |
685 | nd->devaddr = g_strdup(nic->addr); | |
f83c6e10 MM |
686 | } |
687 | ||
2456f36f LE |
688 | if (nic->has_macaddr && |
689 | net_parse_macaddr(nd->macaddr.a, nic->macaddr) < 0) { | |
1ecda02b | 690 | error_report("invalid syntax for ethernet address"); |
f83c6e10 MM |
691 | return -1; |
692 | } | |
d60b20cf DK |
693 | if (nic->has_macaddr && |
694 | is_multicast_ether_addr(nd->macaddr.a)) { | |
695 | error_report("NIC cannot have multicast MAC address (odd 1st byte)"); | |
696 | return -1; | |
697 | } | |
6eed1856 | 698 | qemu_macaddr_default_if_unset(&nd->macaddr); |
f83c6e10 | 699 | |
2456f36f LE |
700 | if (nic->has_vectors) { |
701 | if (nic->vectors > 0x7ffffff) { | |
702 | error_report("invalid # of vectors: %"PRIu32, nic->vectors); | |
703 | return -1; | |
704 | } | |
705 | nd->nvectors = nic->vectors; | |
706 | } else { | |
707 | nd->nvectors = DEV_NVECTORS_UNSPECIFIED; | |
f83c6e10 MM |
708 | } |
709 | ||
710 | nd->used = 1; | |
f83c6e10 MM |
711 | nb_nics++; |
712 | ||
713 | return idx; | |
714 | } | |
715 | ||
6687b79d LE |
716 | |
717 | static int (* const net_client_init_fun[NET_CLIENT_OPTIONS_KIND_MAX])( | |
1a0c0958 | 718 | const NetClientOptions *opts, |
6687b79d | 719 | const char *name, |
4e68f7a0 | 720 | NetClientState *peer) = { |
f6c874e3 | 721 | [NET_CLIENT_OPTIONS_KIND_NIC] = net_init_nic, |
ec302ffd | 722 | #ifdef CONFIG_SLIRP |
f6c874e3 | 723 | [NET_CLIENT_OPTIONS_KIND_USER] = net_init_slirp, |
2944e4ec | 724 | #endif |
f6c874e3 SH |
725 | [NET_CLIENT_OPTIONS_KIND_TAP] = net_init_tap, |
726 | [NET_CLIENT_OPTIONS_KIND_SOCKET] = net_init_socket, | |
dd51058d | 727 | #ifdef CONFIG_VDE |
f6c874e3 | 728 | [NET_CLIENT_OPTIONS_KIND_VDE] = net_init_vde, |
dd51058d | 729 | #endif |
f6c874e3 | 730 | [NET_CLIENT_OPTIONS_KIND_DUMP] = net_init_dump, |
2944e4ec | 731 | #ifdef CONFIG_NET_BRIDGE |
f6c874e3 | 732 | [NET_CLIENT_OPTIONS_KIND_BRIDGE] = net_init_bridge, |
6687b79d | 733 | #endif |
f6c874e3 | 734 | [NET_CLIENT_OPTIONS_KIND_HUBPORT] = net_init_hubport, |
f83c6e10 MM |
735 | }; |
736 | ||
6687b79d | 737 | |
1a0c0958 | 738 | static int net_client_init1(const void *object, int is_netdev, Error **errp) |
f83c6e10 | 739 | { |
6687b79d LE |
740 | union { |
741 | const Netdev *netdev; | |
742 | const NetLegacy *net; | |
743 | } u; | |
744 | const NetClientOptions *opts; | |
6d952ebe | 745 | const char *name; |
f83c6e10 | 746 | |
5294e2c7 | 747 | if (is_netdev) { |
6687b79d LE |
748 | u.netdev = object; |
749 | opts = u.netdev->opts; | |
750 | name = u.netdev->id; | |
751 | ||
752 | switch (opts->kind) { | |
f6b134ac | 753 | #ifdef CONFIG_SLIRP |
6687b79d | 754 | case NET_CLIENT_OPTIONS_KIND_USER: |
f6b134ac | 755 | #endif |
6687b79d LE |
756 | case NET_CLIENT_OPTIONS_KIND_TAP: |
757 | case NET_CLIENT_OPTIONS_KIND_SOCKET: | |
f6b134ac | 758 | #ifdef CONFIG_VDE |
6687b79d LE |
759 | case NET_CLIENT_OPTIONS_KIND_VDE: |
760 | #endif | |
761 | #ifdef CONFIG_NET_BRIDGE | |
762 | case NET_CLIENT_OPTIONS_KIND_BRIDGE: | |
f6b134ac | 763 | #endif |
f6c874e3 | 764 | case NET_CLIENT_OPTIONS_KIND_HUBPORT: |
6687b79d LE |
765 | break; |
766 | ||
767 | default: | |
4559a1db LC |
768 | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "type", |
769 | "a netdev backend type"); | |
f6b134ac MM |
770 | return -1; |
771 | } | |
6687b79d LE |
772 | } else { |
773 | u.net = object; | |
774 | opts = u.net->opts; | |
775 | /* missing optional values have been initialized to "all bits zero" */ | |
776 | name = u.net->has_id ? u.net->id : u.net->name; | |
777 | } | |
f6b134ac | 778 | |
6687b79d | 779 | if (net_client_init_fun[opts->kind]) { |
4e68f7a0 | 780 | NetClientState *peer = NULL; |
6687b79d LE |
781 | |
782 | /* Do not add to a vlan if it's a -netdev or a nic with a netdev= | |
783 | * parameter. */ | |
784 | if (!is_netdev && | |
785 | (opts->kind != NET_CLIENT_OPTIONS_KIND_NIC || | |
786 | !opts->nic->has_netdev)) { | |
d33d93b2 | 787 | peer = net_hub_add_port(u.net->has_vlan ? u.net->vlan : 0, NULL); |
f6b134ac | 788 | } |
6687b79d | 789 | |
d33d93b2 | 790 | if (net_client_init_fun[opts->kind](opts, name, peer) < 0) { |
6687b79d LE |
791 | /* TODO push error reporting into init() methods */ |
792 | error_set(errp, QERR_DEVICE_INIT_FAILED, | |
793 | NetClientOptionsKind_lookup[opts->kind]); | |
f6b134ac MM |
794 | return -1; |
795 | } | |
796 | } | |
6687b79d LE |
797 | return 0; |
798 | } | |
799 | ||
f6b134ac | 800 | |
6687b79d LE |
801 | static void net_visit(Visitor *v, int is_netdev, void **object, Error **errp) |
802 | { | |
803 | if (is_netdev) { | |
804 | visit_type_Netdev(v, (Netdev **)object, NULL, errp); | |
805 | } else { | |
806 | visit_type_NetLegacy(v, (NetLegacy **)object, NULL, errp); | |
6d952ebe | 807 | } |
6687b79d | 808 | } |
6d952ebe | 809 | |
f6b134ac | 810 | |
6687b79d LE |
811 | int net_client_init(QemuOpts *opts, int is_netdev, Error **errp) |
812 | { | |
813 | void *object = NULL; | |
814 | Error *err = NULL; | |
815 | int ret = -1; | |
f83c6e10 | 816 | |
6687b79d LE |
817 | { |
818 | OptsVisitor *ov = opts_visitor_new(opts); | |
f6b134ac | 819 | |
6687b79d LE |
820 | net_visit(opts_get_visitor(ov), is_netdev, &object, &err); |
821 | opts_visitor_cleanup(ov); | |
f83c6e10 MM |
822 | } |
823 | ||
6687b79d | 824 | if (!err) { |
1a0c0958 | 825 | ret = net_client_init1(object, is_netdev, &err); |
6687b79d LE |
826 | } |
827 | ||
828 | if (object) { | |
829 | QapiDeallocVisitor *dv = qapi_dealloc_visitor_new(); | |
830 | ||
831 | net_visit(qapi_dealloc_get_visitor(dv), is_netdev, &object, NULL); | |
832 | qapi_dealloc_visitor_cleanup(dv); | |
833 | } | |
834 | ||
835 | error_propagate(errp, err); | |
836 | return ret; | |
f83c6e10 MM |
837 | } |
838 | ||
6687b79d | 839 | |
6f338c34 AL |
840 | static int net_host_check_device(const char *device) |
841 | { | |
842 | int i; | |
bb9ea79e | 843 | const char *valid_param_list[] = { "tap", "socket", "dump" |
2944e4ec SW |
844 | #ifdef CONFIG_NET_BRIDGE |
845 | , "bridge" | |
846 | #endif | |
6f338c34 AL |
847 | #ifdef CONFIG_SLIRP |
848 | ,"user" | |
849 | #endif | |
850 | #ifdef CONFIG_VDE | |
851 | ,"vde" | |
852 | #endif | |
853 | }; | |
854 | for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) { | |
855 | if (!strncmp(valid_param_list[i], device, | |
856 | strlen(valid_param_list[i]))) | |
857 | return 1; | |
858 | } | |
859 | ||
860 | return 0; | |
861 | } | |
862 | ||
f18c16de | 863 | void net_host_device_add(Monitor *mon, const QDict *qdict) |
6f338c34 | 864 | { |
f18c16de | 865 | const char *device = qdict_get_str(qdict, "device"); |
7f1c9d20 | 866 | const char *opts_str = qdict_get_try_str(qdict, "opts"); |
4559a1db | 867 | Error *local_err = NULL; |
7f1c9d20 | 868 | QemuOpts *opts; |
f18c16de | 869 | |
6f338c34 | 870 | if (!net_host_check_device(device)) { |
376253ec | 871 | monitor_printf(mon, "invalid host network device %s\n", device); |
6f338c34 AL |
872 | return; |
873 | } | |
7f1c9d20 | 874 | |
3329f07b | 875 | opts = qemu_opts_parse(qemu_find_opts("net"), opts_str ? opts_str : "", 0); |
7f1c9d20 | 876 | if (!opts) { |
7f1c9d20 MM |
877 | return; |
878 | } | |
879 | ||
880 | qemu_opt_set(opts, "type", device); | |
881 | ||
4559a1db LC |
882 | net_client_init(opts, 0, &local_err); |
883 | if (error_is_set(&local_err)) { | |
884 | qerror_report_err(local_err); | |
885 | error_free(local_err); | |
5c8be678 AL |
886 | monitor_printf(mon, "adding host network device %s failed\n", device); |
887 | } | |
6f338c34 AL |
888 | } |
889 | ||
f18c16de | 890 | void net_host_device_remove(Monitor *mon, const QDict *qdict) |
6f338c34 | 891 | { |
35277d14 | 892 | NetClientState *nc; |
f18c16de LC |
893 | int vlan_id = qdict_get_int(qdict, "vlan_id"); |
894 | const char *device = qdict_get_str(qdict, "device"); | |
6f338c34 | 895 | |
35277d14 SH |
896 | nc = net_hub_find_client_by_name(vlan_id, device); |
897 | if (!nc) { | |
6f338c34 AL |
898 | return; |
899 | } | |
35277d14 | 900 | if (!net_host_check_device(nc->model)) { |
e8f1f9db AL |
901 | monitor_printf(mon, "invalid host network device %s\n", device); |
902 | return; | |
903 | } | |
b20c6b9e | 904 | qemu_del_net_client(nc); |
6f338c34 AL |
905 | } |
906 | ||
928059a3 LC |
907 | void netdev_add(QemuOpts *opts, Error **errp) |
908 | { | |
909 | net_client_init(opts, 1, errp); | |
910 | } | |
911 | ||
912 | int qmp_netdev_add(Monitor *mon, const QDict *qdict, QObject **ret) | |
ae82d324 | 913 | { |
4e89978e | 914 | Error *local_err = NULL; |
928059a3 | 915 | QemuOptsList *opts_list; |
ae82d324 | 916 | QemuOpts *opts; |
ae82d324 | 917 | |
928059a3 LC |
918 | opts_list = qemu_find_opts_err("netdev", &local_err); |
919 | if (error_is_set(&local_err)) { | |
920 | goto exit_err; | |
ae82d324 MA |
921 | } |
922 | ||
928059a3 LC |
923 | opts = qemu_opts_from_qdict(opts_list, qdict, &local_err); |
924 | if (error_is_set(&local_err)) { | |
925 | goto exit_err; | |
926 | } | |
927 | ||
928 | netdev_add(opts, &local_err); | |
929 | if (error_is_set(&local_err)) { | |
410cbafe | 930 | qemu_opts_del(opts); |
928059a3 | 931 | goto exit_err; |
410cbafe YT |
932 | } |
933 | ||
928059a3 LC |
934 | return 0; |
935 | ||
936 | exit_err: | |
937 | qerror_report_err(local_err); | |
938 | error_free(local_err); | |
939 | return -1; | |
ae82d324 MA |
940 | } |
941 | ||
5f964155 | 942 | void qmp_netdev_del(const char *id, Error **errp) |
ae82d324 | 943 | { |
35277d14 | 944 | NetClientState *nc; |
645c9496 | 945 | QemuOpts *opts; |
ae82d324 | 946 | |
35277d14 SH |
947 | nc = qemu_find_netdev(id); |
948 | if (!nc) { | |
5f964155 LC |
949 | error_set(errp, QERR_DEVICE_NOT_FOUND, id); |
950 | return; | |
ae82d324 | 951 | } |
5f964155 | 952 | |
645c9496 SH |
953 | opts = qemu_opts_find(qemu_find_opts_err("netdev", NULL), id); |
954 | if (!opts) { | |
955 | error_setg(errp, "Device '%s' is not a netdev", id); | |
956 | return; | |
957 | } | |
958 | ||
b20c6b9e | 959 | qemu_del_net_client(nc); |
645c9496 | 960 | qemu_opts_del(opts); |
ae82d324 MA |
961 | } |
962 | ||
1a859593 | 963 | void print_net_client(Monitor *mon, NetClientState *nc) |
44e798d3 | 964 | { |
1ceef9f2 JW |
965 | monitor_printf(mon, "%s: index=%d,type=%s,%s\n", nc->name, |
966 | nc->queue_index, | |
967 | NetClientOptionsKind_lookup[nc->info->type], | |
968 | nc->info_str); | |
44e798d3 JK |
969 | } |
970 | ||
b1be4280 AK |
971 | RxFilterInfoList *qmp_query_rx_filter(bool has_name, const char *name, |
972 | Error **errp) | |
973 | { | |
974 | NetClientState *nc; | |
975 | RxFilterInfoList *filter_list = NULL, *last_entry = NULL; | |
976 | ||
977 | QTAILQ_FOREACH(nc, &net_clients, next) { | |
978 | RxFilterInfoList *entry; | |
979 | RxFilterInfo *info; | |
980 | ||
981 | if (has_name && strcmp(nc->name, name) != 0) { | |
982 | continue; | |
983 | } | |
984 | ||
985 | /* only query rx-filter information of NIC */ | |
986 | if (nc->info->type != NET_CLIENT_OPTIONS_KIND_NIC) { | |
987 | if (has_name) { | |
988 | error_setg(errp, "net client(%s) isn't a NIC", name); | |
989 | break; | |
990 | } | |
991 | continue; | |
992 | } | |
993 | ||
994 | if (nc->info->query_rx_filter) { | |
995 | info = nc->info->query_rx_filter(nc); | |
996 | entry = g_malloc0(sizeof(*entry)); | |
997 | entry->value = info; | |
998 | ||
999 | if (!filter_list) { | |
1000 | filter_list = entry; | |
1001 | } else { | |
1002 | last_entry->next = entry; | |
1003 | } | |
1004 | last_entry = entry; | |
1005 | } else if (has_name) { | |
1006 | error_setg(errp, "net client(%s) doesn't support" | |
1007 | " rx-filter querying", name); | |
1008 | break; | |
1009 | } | |
1010 | } | |
1011 | ||
1012 | if (filter_list == NULL && !error_is_set(errp) && has_name) { | |
1013 | error_setg(errp, "invalid net client name: %s", name); | |
1014 | } | |
1015 | ||
1016 | return filter_list; | |
1017 | } | |
1018 | ||
84f2d0ea | 1019 | void do_info_network(Monitor *mon, const QDict *qdict) |
63a01ef8 | 1020 | { |
35277d14 | 1021 | NetClientState *nc, *peer; |
2be64a68 | 1022 | NetClientOptionsKind type; |
63a01ef8 | 1023 | |
1a859593 ZYW |
1024 | net_hub_info(mon); |
1025 | ||
35277d14 SH |
1026 | QTAILQ_FOREACH(nc, &net_clients, next) { |
1027 | peer = nc->peer; | |
1028 | type = nc->info->type; | |
5610c3aa | 1029 | |
1a859593 ZYW |
1030 | /* Skip if already printed in hub info */ |
1031 | if (net_hub_id_for_client(nc, NULL) == 0) { | |
1032 | continue; | |
5610c3aa | 1033 | } |
1a859593 | 1034 | |
2be64a68 | 1035 | if (!peer || type == NET_CLIENT_OPTIONS_KIND_NIC) { |
35277d14 | 1036 | print_net_client(mon, nc); |
19061e63 | 1037 | } /* else it's a netdev connected to a NIC, printed with the NIC */ |
2be64a68 | 1038 | if (peer && type == NET_CLIENT_OPTIONS_KIND_NIC) { |
1a859593 | 1039 | monitor_printf(mon, " \\ "); |
44e798d3 | 1040 | print_net_client(mon, peer); |
a0104e0e | 1041 | } |
a0104e0e | 1042 | } |
63a01ef8 AL |
1043 | } |
1044 | ||
4b37156c | 1045 | void qmp_set_link(const char *name, bool up, Error **errp) |
436e5e53 | 1046 | { |
1ceef9f2 JW |
1047 | NetClientState *ncs[MAX_QUEUE_NUM]; |
1048 | NetClientState *nc; | |
1049 | int queues, i; | |
436e5e53 | 1050 | |
1ceef9f2 JW |
1051 | queues = qemu_find_net_clients_except(name, ncs, |
1052 | NET_CLIENT_OPTIONS_KIND_MAX, | |
1053 | MAX_QUEUE_NUM); | |
1054 | ||
1055 | if (queues == 0) { | |
4b37156c LC |
1056 | error_set(errp, QERR_DEVICE_NOT_FOUND, name); |
1057 | return; | |
436e5e53 | 1058 | } |
1ceef9f2 | 1059 | nc = ncs[0]; |
436e5e53 | 1060 | |
1ceef9f2 JW |
1061 | for (i = 0; i < queues; i++) { |
1062 | ncs[i]->link_down = !up; | |
1063 | } | |
436e5e53 | 1064 | |
35277d14 SH |
1065 | if (nc->info->link_status_changed) { |
1066 | nc->info->link_status_changed(nc); | |
665a3b07 | 1067 | } |
ab1cbe1c MT |
1068 | |
1069 | /* Notify peer. Don't update peer link status: this makes it possible to | |
1070 | * disconnect from host network without notifying the guest. | |
1071 | * FIXME: is disconnected link status change operation useful? | |
1072 | * | |
1073 | * Current behaviour is compatible with qemu vlans where there could be | |
1074 | * multiple clients that can still communicate with each other in | |
1075 | * disconnected mode. For now maintain this compatibility. */ | |
35277d14 SH |
1076 | if (nc->peer && nc->peer->info->link_status_changed) { |
1077 | nc->peer->info->link_status_changed(nc->peer); | |
ab1cbe1c | 1078 | } |
436e5e53 AL |
1079 | } |
1080 | ||
63a01ef8 AL |
1081 | void net_cleanup(void) |
1082 | { | |
1ceef9f2 | 1083 | NetClientState *nc; |
577c4af9 | 1084 | |
1ceef9f2 JW |
1085 | /* We may del multiple entries during qemu_del_net_client(), |
1086 | * so QTAILQ_FOREACH_SAFE() is also not safe here. | |
1087 | */ | |
1088 | while (!QTAILQ_EMPTY(&net_clients)) { | |
1089 | nc = QTAILQ_FIRST(&net_clients); | |
948ecf21 JW |
1090 | if (nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC) { |
1091 | qemu_del_nic(qemu_get_nic(nc)); | |
1092 | } else { | |
1093 | qemu_del_net_client(nc); | |
1094 | } | |
577c4af9 | 1095 | } |
63a01ef8 AL |
1096 | } |
1097 | ||
668680f7 | 1098 | void net_check_clients(void) |
63a01ef8 | 1099 | { |
35277d14 | 1100 | NetClientState *nc; |
48e2faf2 | 1101 | int i; |
63a01ef8 | 1102 | |
641f6eae PM |
1103 | /* Don't warn about the default network setup that you get if |
1104 | * no command line -net or -netdev options are specified. There | |
1105 | * are two cases that we would otherwise complain about: | |
1106 | * (1) board doesn't support a NIC but the implicit "-net nic" | |
1107 | * requested one | |
1108 | * (2) CONFIG_SLIRP not set, in which case the implicit "-net nic" | |
1109 | * sets up a nic that isn't connected to anything. | |
1110 | */ | |
1111 | if (default_net) { | |
1112 | return; | |
1113 | } | |
1114 | ||
81017645 | 1115 | net_hub_check_clients(); |
ac60cc18 | 1116 | |
35277d14 SH |
1117 | QTAILQ_FOREACH(nc, &net_clients, next) { |
1118 | if (!nc->peer) { | |
efe32fdd | 1119 | fprintf(stderr, "Warning: %s %s has no peer\n", |
35277d14 SH |
1120 | nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC ? |
1121 | "nic" : "netdev", nc->name); | |
efe32fdd MA |
1122 | } |
1123 | } | |
48e2faf2 PM |
1124 | |
1125 | /* Check that all NICs requested via -net nic actually got created. | |
1126 | * NICs created via -device don't need to be checked here because | |
1127 | * they are always instantiated. | |
1128 | */ | |
1129 | for (i = 0; i < MAX_NICS; i++) { | |
1130 | NICInfo *nd = &nd_table[i]; | |
1131 | if (nd->used && !nd->instantiated) { | |
1132 | fprintf(stderr, "Warning: requested NIC (%s, model %s) " | |
1133 | "was not created (not supported by this machine?)\n", | |
1134 | nd->name ? nd->name : "anonymous", | |
1135 | nd->model ? nd->model : "unspecified"); | |
1136 | } | |
1137 | } | |
63a01ef8 | 1138 | } |
dc1c9fe8 MM |
1139 | |
1140 | static int net_init_client(QemuOpts *opts, void *dummy) | |
1141 | { | |
4559a1db LC |
1142 | Error *local_err = NULL; |
1143 | ||
1144 | net_client_init(opts, 0, &local_err); | |
1145 | if (error_is_set(&local_err)) { | |
1146 | qerror_report_err(local_err); | |
1147 | error_free(local_err); | |
c1671a08 | 1148 | return -1; |
4559a1db LC |
1149 | } |
1150 | ||
c1671a08 | 1151 | return 0; |
f6b134ac MM |
1152 | } |
1153 | ||
1154 | static int net_init_netdev(QemuOpts *opts, void *dummy) | |
1155 | { | |
4559a1db LC |
1156 | Error *local_err = NULL; |
1157 | int ret; | |
1158 | ||
1159 | ret = net_client_init(opts, 1, &local_err); | |
1160 | if (error_is_set(&local_err)) { | |
1161 | qerror_report_err(local_err); | |
1162 | error_free(local_err); | |
1163 | return -1; | |
1164 | } | |
1165 | ||
1166 | return ret; | |
dc1c9fe8 MM |
1167 | } |
1168 | ||
1169 | int net_init_clients(void) | |
1170 | { | |
3329f07b GH |
1171 | QemuOptsList *net = qemu_find_opts("net"); |
1172 | ||
cb4522cc | 1173 | if (default_net) { |
dc1c9fe8 | 1174 | /* if no clients, we use a default config */ |
3329f07b | 1175 | qemu_opts_set(net, NULL, "type", "nic"); |
dc1c9fe8 | 1176 | #ifdef CONFIG_SLIRP |
3329f07b | 1177 | qemu_opts_set(net, NULL, "type", "user"); |
dc1c9fe8 MM |
1178 | #endif |
1179 | } | |
1180 | ||
94878994 | 1181 | QTAILQ_INIT(&net_clients); |
5610c3aa | 1182 | |
3329f07b | 1183 | if (qemu_opts_foreach(qemu_find_opts("netdev"), net_init_netdev, NULL, 1) == -1) |
f6b134ac MM |
1184 | return -1; |
1185 | ||
3329f07b | 1186 | if (qemu_opts_foreach(net, net_init_client, NULL, 1) == -1) { |
dc1c9fe8 MM |
1187 | return -1; |
1188 | } | |
1189 | ||
dc1c9fe8 MM |
1190 | return 0; |
1191 | } | |
1192 | ||
7f161aae | 1193 | int net_client_parse(QemuOptsList *opts_list, const char *optarg) |
dc1c9fe8 | 1194 | { |
a3a766e7 | 1195 | #if defined(CONFIG_SLIRP) |
68ac40d2 MM |
1196 | int ret; |
1197 | if (net_slirp_parse_legacy(opts_list, optarg, &ret)) { | |
dc1c9fe8 MM |
1198 | return ret; |
1199 | } | |
a3a766e7 | 1200 | #endif |
68ac40d2 | 1201 | |
8212c64f | 1202 | if (!qemu_opts_parse(opts_list, optarg, 1)) { |
dc1c9fe8 MM |
1203 | return -1; |
1204 | } | |
1205 | ||
cb4522cc | 1206 | default_net = 0; |
dc1c9fe8 MM |
1207 | return 0; |
1208 | } | |
7fc8d918 JW |
1209 | |
1210 | /* From FreeBSD */ | |
1211 | /* XXX: optimize */ | |
1212 | unsigned compute_mcast_idx(const uint8_t *ep) | |
1213 | { | |
1214 | uint32_t crc; | |
1215 | int carry, i, j; | |
1216 | uint8_t b; | |
1217 | ||
1218 | crc = 0xffffffff; | |
1219 | for (i = 0; i < 6; i++) { | |
1220 | b = *ep++; | |
1221 | for (j = 0; j < 8; j++) { | |
1222 | carry = ((crc & 0x80000000L) ? 1 : 0) ^ (b & 0x01); | |
1223 | crc <<= 1; | |
1224 | b >>= 1; | |
1225 | if (carry) { | |
1226 | crc = ((crc ^ POLYNOMIAL) | carry); | |
1227 | } | |
1228 | } | |
1229 | } | |
1230 | return crc >> 26; | |
1231 | } | |
4d454574 PB |
1232 | |
1233 | QemuOptsList qemu_netdev_opts = { | |
1234 | .name = "netdev", | |
1235 | .implied_opt_name = "type", | |
1236 | .head = QTAILQ_HEAD_INITIALIZER(qemu_netdev_opts.head), | |
1237 | .desc = { | |
1238 | /* | |
1239 | * no elements => accept any params | |
1240 | * validation will happen later | |
1241 | */ | |
1242 | { /* end of list */ } | |
1243 | }, | |
1244 | }; | |
1245 | ||
1246 | QemuOptsList qemu_net_opts = { | |
1247 | .name = "net", | |
1248 | .implied_opt_name = "type", | |
1249 | .head = QTAILQ_HEAD_INITIALIZER(qemu_net_opts.head), | |
1250 | .desc = { | |
1251 | /* | |
1252 | * no elements => accept any params | |
1253 | * validation will happen later | |
1254 | */ | |
1255 | { /* end of list */ } | |
1256 | }, | |
1257 | }; |