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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" |
e1d64c08 | 44 | #include "sysemu/sysemu.h" |
511d2b14 | 45 | |
2944e4ec SW |
46 | /* Net bridge is currently not supported for W32. */ |
47 | #if !defined(_WIN32) | |
48 | # define CONFIG_NET_BRIDGE | |
49 | #endif | |
50 | ||
ca77d85e | 51 | static VMChangeStateEntry *net_change_state_entry; |
4e68f7a0 | 52 | static QTAILQ_HEAD(, NetClientState) net_clients; |
63a01ef8 | 53 | |
84007e81 HB |
54 | const char *host_net_devices[] = { |
55 | "tap", | |
56 | "socket", | |
57 | "dump", | |
58 | #ifdef CONFIG_NET_BRIDGE | |
59 | "bridge", | |
60 | #endif | |
61 | #ifdef CONFIG_SLIRP | |
62 | "user", | |
63 | #endif | |
64 | #ifdef CONFIG_VDE | |
65 | "vde", | |
66 | #endif | |
03ce5744 | 67 | "vhost-user", |
84007e81 HB |
68 | NULL, |
69 | }; | |
70 | ||
cb4522cc GH |
71 | int default_net = 1; |
72 | ||
63a01ef8 AL |
73 | /***********************************************************/ |
74 | /* network device redirectors */ | |
75 | ||
68ac40d2 | 76 | #if defined(DEBUG_NET) |
63a01ef8 AL |
77 | static void hex_dump(FILE *f, const uint8_t *buf, int size) |
78 | { | |
79 | int len, i, j, c; | |
80 | ||
81 | for(i=0;i<size;i+=16) { | |
82 | len = size - i; | |
83 | if (len > 16) | |
84 | len = 16; | |
85 | fprintf(f, "%08x ", i); | |
86 | for(j=0;j<16;j++) { | |
87 | if (j < len) | |
88 | fprintf(f, " %02x", buf[i+j]); | |
89 | else | |
90 | fprintf(f, " "); | |
91 | } | |
92 | fprintf(f, " "); | |
93 | for(j=0;j<len;j++) { | |
94 | c = buf[i+j]; | |
95 | if (c < ' ' || c > '~') | |
96 | c = '.'; | |
97 | fprintf(f, "%c", c); | |
98 | } | |
99 | fprintf(f, "\n"); | |
100 | } | |
101 | } | |
102 | #endif | |
103 | ||
63a01ef8 AL |
104 | static int get_str_sep(char *buf, int buf_size, const char **pp, int sep) |
105 | { | |
106 | const char *p, *p1; | |
107 | int len; | |
108 | p = *pp; | |
109 | p1 = strchr(p, sep); | |
110 | if (!p1) | |
111 | return -1; | |
112 | len = p1 - p; | |
113 | p1++; | |
114 | if (buf_size > 0) { | |
115 | if (len > buf_size - 1) | |
116 | len = buf_size - 1; | |
117 | memcpy(buf, p, len); | |
118 | buf[len] = '\0'; | |
119 | } | |
120 | *pp = p1; | |
121 | return 0; | |
122 | } | |
123 | ||
63a01ef8 AL |
124 | int parse_host_port(struct sockaddr_in *saddr, const char *str) |
125 | { | |
126 | char buf[512]; | |
127 | struct hostent *he; | |
128 | const char *p, *r; | |
129 | int port; | |
130 | ||
131 | p = str; | |
132 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) | |
133 | return -1; | |
134 | saddr->sin_family = AF_INET; | |
135 | if (buf[0] == '\0') { | |
136 | saddr->sin_addr.s_addr = 0; | |
137 | } else { | |
cd390083 | 138 | if (qemu_isdigit(buf[0])) { |
63a01ef8 AL |
139 | if (!inet_aton(buf, &saddr->sin_addr)) |
140 | return -1; | |
141 | } else { | |
142 | if ((he = gethostbyname(buf)) == NULL) | |
143 | return - 1; | |
144 | saddr->sin_addr = *(struct in_addr *)he->h_addr; | |
145 | } | |
146 | } | |
147 | port = strtol(p, (char **)&r, 0); | |
148 | if (r == p) | |
149 | return -1; | |
150 | saddr->sin_port = htons(port); | |
151 | return 0; | |
152 | } | |
153 | ||
890ee6ab SF |
154 | char *qemu_mac_strdup_printf(const uint8_t *macaddr) |
155 | { | |
156 | return g_strdup_printf("%.2x:%.2x:%.2x:%.2x:%.2x:%.2x", | |
157 | macaddr[0], macaddr[1], macaddr[2], | |
158 | macaddr[3], macaddr[4], macaddr[5]); | |
159 | } | |
160 | ||
35277d14 | 161 | void qemu_format_nic_info_str(NetClientState *nc, uint8_t macaddr[6]) |
7cb7434b | 162 | { |
35277d14 | 163 | snprintf(nc->info_str, sizeof(nc->info_str), |
4dda4063 | 164 | "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x", |
35277d14 | 165 | nc->model, |
7cb7434b AL |
166 | macaddr[0], macaddr[1], macaddr[2], |
167 | macaddr[3], macaddr[4], macaddr[5]); | |
168 | } | |
169 | ||
2bc22a58 SZ |
170 | static int mac_table[256] = {0}; |
171 | ||
172 | static void qemu_macaddr_set_used(MACAddr *macaddr) | |
173 | { | |
174 | int index; | |
175 | ||
176 | for (index = 0x56; index < 0xFF; index++) { | |
177 | if (macaddr->a[5] == index) { | |
178 | mac_table[index]++; | |
179 | } | |
180 | } | |
181 | } | |
182 | ||
183 | static void qemu_macaddr_set_free(MACAddr *macaddr) | |
184 | { | |
185 | int index; | |
186 | static const MACAddr base = { .a = { 0x52, 0x54, 0x00, 0x12, 0x34, 0 } }; | |
187 | ||
188 | if (memcmp(macaddr->a, &base.a, (sizeof(base.a) - 1)) != 0) { | |
189 | return; | |
190 | } | |
191 | for (index = 0x56; index < 0xFF; index++) { | |
192 | if (macaddr->a[5] == index) { | |
193 | mac_table[index]--; | |
194 | } | |
195 | } | |
196 | } | |
197 | ||
198 | static int qemu_macaddr_get_free(void) | |
199 | { | |
200 | int index; | |
201 | ||
202 | for (index = 0x56; index < 0xFF; index++) { | |
203 | if (mac_table[index] == 0) { | |
204 | return index; | |
205 | } | |
206 | } | |
207 | ||
208 | return -1; | |
209 | } | |
210 | ||
76d32cba GH |
211 | void qemu_macaddr_default_if_unset(MACAddr *macaddr) |
212 | { | |
76d32cba | 213 | static const MACAddr zero = { .a = { 0,0,0,0,0,0 } }; |
2bc22a58 SZ |
214 | static const MACAddr base = { .a = { 0x52, 0x54, 0x00, 0x12, 0x34, 0 } }; |
215 | ||
216 | if (memcmp(macaddr, &zero, sizeof(zero)) != 0) { | |
217 | if (memcmp(macaddr->a, &base.a, (sizeof(base.a) - 1)) != 0) { | |
218 | return; | |
219 | } else { | |
220 | qemu_macaddr_set_used(macaddr); | |
221 | return; | |
222 | } | |
223 | } | |
76d32cba | 224 | |
76d32cba GH |
225 | macaddr->a[0] = 0x52; |
226 | macaddr->a[1] = 0x54; | |
227 | macaddr->a[2] = 0x00; | |
228 | macaddr->a[3] = 0x12; | |
229 | macaddr->a[4] = 0x34; | |
2bc22a58 SZ |
230 | macaddr->a[5] = qemu_macaddr_get_free(); |
231 | qemu_macaddr_set_used(macaddr); | |
76d32cba GH |
232 | } |
233 | ||
d33d93b2 SH |
234 | /** |
235 | * Generate a name for net client | |
236 | * | |
c963530a | 237 | * Only net clients created with the legacy -net option and NICs need this. |
d33d93b2 | 238 | */ |
35277d14 | 239 | static char *assign_name(NetClientState *nc1, const char *model) |
676cff29 | 240 | { |
35277d14 | 241 | NetClientState *nc; |
676cff29 AL |
242 | int id = 0; |
243 | ||
35277d14 SH |
244 | QTAILQ_FOREACH(nc, &net_clients, next) { |
245 | if (nc == nc1) { | |
d33d93b2 | 246 | continue; |
5610c3aa | 247 | } |
c963530a | 248 | if (strcmp(nc->model, model) == 0) { |
53e51d85 MA |
249 | id++; |
250 | } | |
251 | } | |
252 | ||
4bf2c138 | 253 | return g_strdup_printf("%s.%d", model, id); |
676cff29 AL |
254 | } |
255 | ||
f7860455 JW |
256 | static void qemu_net_client_destructor(NetClientState *nc) |
257 | { | |
258 | g_free(nc); | |
259 | } | |
260 | ||
18a1541a JW |
261 | static void qemu_net_client_setup(NetClientState *nc, |
262 | NetClientInfo *info, | |
263 | NetClientState *peer, | |
264 | const char *model, | |
f7860455 JW |
265 | const char *name, |
266 | NetClientDestructor *destructor) | |
63a01ef8 | 267 | { |
35277d14 SH |
268 | nc->info = info; |
269 | nc->model = g_strdup(model); | |
45460d1a | 270 | if (name) { |
35277d14 | 271 | nc->name = g_strdup(name); |
45460d1a | 272 | } else { |
35277d14 | 273 | nc->name = assign_name(nc, model); |
45460d1a | 274 | } |
5610c3aa | 275 | |
ab5f3f84 SH |
276 | if (peer) { |
277 | assert(!peer->peer); | |
35277d14 SH |
278 | nc->peer = peer; |
279 | peer->peer = nc; | |
d80b9fc6 | 280 | } |
35277d14 | 281 | QTAILQ_INSERT_TAIL(&net_clients, nc, next); |
63a01ef8 | 282 | |
067404be | 283 | nc->incoming_queue = qemu_new_net_queue(nc); |
f7860455 | 284 | nc->destructor = destructor; |
18a1541a JW |
285 | } |
286 | ||
287 | NetClientState *qemu_new_net_client(NetClientInfo *info, | |
288 | NetClientState *peer, | |
289 | const char *model, | |
290 | const char *name) | |
291 | { | |
292 | NetClientState *nc; | |
293 | ||
294 | assert(info->size >= sizeof(NetClientState)); | |
295 | ||
296 | nc = g_malloc0(info->size); | |
f7860455 JW |
297 | qemu_net_client_setup(nc, info, peer, model, name, |
298 | qemu_net_client_destructor); | |
18a1541a | 299 | |
35277d14 | 300 | return nc; |
63a01ef8 AL |
301 | } |
302 | ||
ebef2c09 MM |
303 | NICState *qemu_new_nic(NetClientInfo *info, |
304 | NICConf *conf, | |
305 | const char *model, | |
306 | const char *name, | |
307 | void *opaque) | |
308 | { | |
1ceef9f2 | 309 | NetClientState **peers = conf->peers.ncs; |
ebef2c09 | 310 | NICState *nic; |
575a1c0e | 311 | int i, queues = MAX(1, conf->peers.queues); |
ebef2c09 | 312 | |
2be64a68 | 313 | assert(info->type == NET_CLIENT_OPTIONS_KIND_NIC); |
ebef2c09 MM |
314 | assert(info->size >= sizeof(NICState)); |
315 | ||
f6b26cf2 JW |
316 | nic = g_malloc0(info->size + sizeof(NetClientState) * queues); |
317 | nic->ncs = (void *)nic + info->size; | |
ebef2c09 MM |
318 | nic->conf = conf; |
319 | nic->opaque = opaque; | |
320 | ||
f6b26cf2 JW |
321 | for (i = 0; i < queues; i++) { |
322 | qemu_net_client_setup(&nic->ncs[i], info, peers[i], model, name, | |
1ceef9f2 JW |
323 | NULL); |
324 | nic->ncs[i].queue_index = i; | |
325 | } | |
326 | ||
ebef2c09 MM |
327 | return nic; |
328 | } | |
329 | ||
1ceef9f2 JW |
330 | NetClientState *qemu_get_subqueue(NICState *nic, int queue_index) |
331 | { | |
f6b26cf2 | 332 | return nic->ncs + queue_index; |
1ceef9f2 JW |
333 | } |
334 | ||
b356f76d JW |
335 | NetClientState *qemu_get_queue(NICState *nic) |
336 | { | |
1ceef9f2 | 337 | return qemu_get_subqueue(nic, 0); |
b356f76d JW |
338 | } |
339 | ||
cc1f0f45 JW |
340 | NICState *qemu_get_nic(NetClientState *nc) |
341 | { | |
1ceef9f2 JW |
342 | NetClientState *nc0 = nc - nc->queue_index; |
343 | ||
f6b26cf2 | 344 | return (NICState *)((void *)nc0 - nc->info->size); |
cc1f0f45 JW |
345 | } |
346 | ||
347 | void *qemu_get_nic_opaque(NetClientState *nc) | |
348 | { | |
349 | NICState *nic = qemu_get_nic(nc); | |
350 | ||
351 | return nic->opaque; | |
352 | } | |
353 | ||
b20c6b9e | 354 | static void qemu_cleanup_net_client(NetClientState *nc) |
63a01ef8 | 355 | { |
35277d14 | 356 | QTAILQ_REMOVE(&net_clients, nc, next); |
63a01ef8 | 357 | |
cc2a9043 AF |
358 | if (nc->info->cleanup) { |
359 | nc->info->cleanup(nc); | |
360 | } | |
a083a89d | 361 | } |
5610c3aa | 362 | |
b20c6b9e | 363 | static void qemu_free_net_client(NetClientState *nc) |
a083a89d | 364 | { |
067404be JK |
365 | if (nc->incoming_queue) { |
366 | qemu_del_net_queue(nc->incoming_queue); | |
a005d073 | 367 | } |
35277d14 SH |
368 | if (nc->peer) { |
369 | nc->peer->peer = NULL; | |
a083a89d | 370 | } |
35277d14 SH |
371 | g_free(nc->name); |
372 | g_free(nc->model); | |
f7860455 JW |
373 | if (nc->destructor) { |
374 | nc->destructor(nc); | |
375 | } | |
63a01ef8 AL |
376 | } |
377 | ||
b20c6b9e | 378 | void qemu_del_net_client(NetClientState *nc) |
a083a89d | 379 | { |
1ceef9f2 JW |
380 | NetClientState *ncs[MAX_QUEUE_NUM]; |
381 | int queues, i; | |
382 | ||
7fb43911 PB |
383 | assert(nc->info->type != NET_CLIENT_OPTIONS_KIND_NIC); |
384 | ||
1ceef9f2 JW |
385 | /* If the NetClientState belongs to a multiqueue backend, we will change all |
386 | * other NetClientStates also. | |
387 | */ | |
388 | queues = qemu_find_net_clients_except(nc->name, ncs, | |
389 | NET_CLIENT_OPTIONS_KIND_NIC, | |
390 | MAX_QUEUE_NUM); | |
391 | assert(queues != 0); | |
392 | ||
a083a89d | 393 | /* If there is a peer NIC, delete and cleanup client, but do not free. */ |
35277d14 | 394 | if (nc->peer && nc->peer->info->type == NET_CLIENT_OPTIONS_KIND_NIC) { |
cc1f0f45 | 395 | NICState *nic = qemu_get_nic(nc->peer); |
a083a89d MT |
396 | if (nic->peer_deleted) { |
397 | return; | |
398 | } | |
399 | nic->peer_deleted = true; | |
1ceef9f2 JW |
400 | |
401 | for (i = 0; i < queues; i++) { | |
402 | ncs[i]->peer->link_down = true; | |
403 | } | |
404 | ||
35277d14 SH |
405 | if (nc->peer->info->link_status_changed) { |
406 | nc->peer->info->link_status_changed(nc->peer); | |
a083a89d | 407 | } |
1ceef9f2 JW |
408 | |
409 | for (i = 0; i < queues; i++) { | |
410 | qemu_cleanup_net_client(ncs[i]); | |
411 | } | |
412 | ||
a083a89d MT |
413 | return; |
414 | } | |
415 | ||
1ceef9f2 JW |
416 | for (i = 0; i < queues; i++) { |
417 | qemu_cleanup_net_client(ncs[i]); | |
418 | qemu_free_net_client(ncs[i]); | |
419 | } | |
948ecf21 JW |
420 | } |
421 | ||
422 | void qemu_del_nic(NICState *nic) | |
423 | { | |
575a1c0e | 424 | int i, queues = MAX(nic->conf->peers.queues, 1); |
1ceef9f2 | 425 | |
2bc22a58 SZ |
426 | qemu_macaddr_set_free(&nic->conf->macaddr); |
427 | ||
a083a89d | 428 | /* If this is a peer NIC and peer has already been deleted, free it now. */ |
1ceef9f2 JW |
429 | if (nic->peer_deleted) { |
430 | for (i = 0; i < queues; i++) { | |
431 | qemu_free_net_client(qemu_get_subqueue(nic, i)->peer); | |
1a609520 JK |
432 | } |
433 | } | |
1a609520 | 434 | |
1ceef9f2 JW |
435 | for (i = queues - 1; i >= 0; i--) { |
436 | NetClientState *nc = qemu_get_subqueue(nic, i); | |
437 | ||
438 | qemu_cleanup_net_client(nc); | |
439 | qemu_free_net_client(nc); | |
440 | } | |
f6b26cf2 JW |
441 | |
442 | g_free(nic); | |
1a609520 JK |
443 | } |
444 | ||
57f9ef17 MM |
445 | void qemu_foreach_nic(qemu_nic_foreach func, void *opaque) |
446 | { | |
4e68f7a0 | 447 | NetClientState *nc; |
57f9ef17 | 448 | |
94878994 | 449 | QTAILQ_FOREACH(nc, &net_clients, next) { |
2be64a68 | 450 | if (nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC) { |
1ceef9f2 JW |
451 | if (nc->queue_index == 0) { |
452 | func(qemu_get_nic(nc), opaque); | |
453 | } | |
57f9ef17 MM |
454 | } |
455 | } | |
57f9ef17 MM |
456 | } |
457 | ||
d6085e3a | 458 | bool qemu_has_ufo(NetClientState *nc) |
1f55ac45 | 459 | { |
d6085e3a | 460 | if (!nc || !nc->info->has_ufo) { |
1f55ac45 VM |
461 | return false; |
462 | } | |
463 | ||
d6085e3a | 464 | return nc->info->has_ufo(nc); |
1f55ac45 VM |
465 | } |
466 | ||
d6085e3a | 467 | bool qemu_has_vnet_hdr(NetClientState *nc) |
1f55ac45 | 468 | { |
d6085e3a | 469 | if (!nc || !nc->info->has_vnet_hdr) { |
1f55ac45 VM |
470 | return false; |
471 | } | |
472 | ||
d6085e3a | 473 | return nc->info->has_vnet_hdr(nc); |
1f55ac45 VM |
474 | } |
475 | ||
d6085e3a | 476 | bool qemu_has_vnet_hdr_len(NetClientState *nc, int len) |
1f55ac45 | 477 | { |
d6085e3a | 478 | if (!nc || !nc->info->has_vnet_hdr_len) { |
1f55ac45 VM |
479 | return false; |
480 | } | |
481 | ||
d6085e3a | 482 | return nc->info->has_vnet_hdr_len(nc, len); |
1f55ac45 VM |
483 | } |
484 | ||
d6085e3a | 485 | void qemu_using_vnet_hdr(NetClientState *nc, bool enable) |
1f55ac45 | 486 | { |
d6085e3a | 487 | if (!nc || !nc->info->using_vnet_hdr) { |
1f55ac45 VM |
488 | return; |
489 | } | |
490 | ||
d6085e3a | 491 | nc->info->using_vnet_hdr(nc, enable); |
1f55ac45 VM |
492 | } |
493 | ||
d6085e3a | 494 | void qemu_set_offload(NetClientState *nc, int csum, int tso4, int tso6, |
1f55ac45 VM |
495 | int ecn, int ufo) |
496 | { | |
d6085e3a | 497 | if (!nc || !nc->info->set_offload) { |
1f55ac45 VM |
498 | return; |
499 | } | |
500 | ||
d6085e3a | 501 | nc->info->set_offload(nc, csum, tso4, tso6, ecn, ufo); |
1f55ac45 VM |
502 | } |
503 | ||
d6085e3a | 504 | void qemu_set_vnet_hdr_len(NetClientState *nc, int len) |
1f55ac45 | 505 | { |
d6085e3a | 506 | if (!nc || !nc->info->set_vnet_hdr_len) { |
1f55ac45 VM |
507 | return; |
508 | } | |
509 | ||
d6085e3a | 510 | nc->info->set_vnet_hdr_len(nc, len); |
1f55ac45 VM |
511 | } |
512 | ||
c80cd6bb GK |
513 | int qemu_set_vnet_le(NetClientState *nc, bool is_le) |
514 | { | |
515 | if (!nc || !nc->info->set_vnet_le) { | |
516 | return -ENOSYS; | |
517 | } | |
518 | ||
519 | return nc->info->set_vnet_le(nc, is_le); | |
520 | } | |
521 | ||
522 | int qemu_set_vnet_be(NetClientState *nc, bool is_be) | |
523 | { | |
524 | if (!nc || !nc->info->set_vnet_be) { | |
525 | return -ENOSYS; | |
526 | } | |
527 | ||
528 | return nc->info->set_vnet_be(nc, is_be); | |
529 | } | |
530 | ||
4e68f7a0 | 531 | int qemu_can_send_packet(NetClientState *sender) |
63a01ef8 | 532 | { |
e1d64c08 HZ |
533 | int vm_running = runstate_is_running(); |
534 | ||
535 | if (!vm_running) { | |
536 | return 0; | |
537 | } | |
538 | ||
a005d073 | 539 | if (!sender->peer) { |
d80b9fc6 MM |
540 | return 1; |
541 | } | |
542 | ||
a005d073 SH |
543 | if (sender->peer->receive_disabled) { |
544 | return 0; | |
545 | } else if (sender->peer->info->can_receive && | |
546 | !sender->peer->info->can_receive(sender->peer)) { | |
547 | return 0; | |
63a01ef8 | 548 | } |
60c07d93 | 549 | return 1; |
63a01ef8 AL |
550 | } |
551 | ||
86a77c38 ZYW |
552 | ssize_t qemu_deliver_packet(NetClientState *sender, |
553 | unsigned flags, | |
554 | const uint8_t *data, | |
555 | size_t size, | |
556 | void *opaque) | |
9a6ecb30 | 557 | { |
35277d14 | 558 | NetClientState *nc = opaque; |
893379ef | 559 | ssize_t ret; |
9a6ecb30 | 560 | |
35277d14 | 561 | if (nc->link_down) { |
9a6ecb30 MM |
562 | return size; |
563 | } | |
564 | ||
35277d14 | 565 | if (nc->receive_disabled) { |
893379ef MM |
566 | return 0; |
567 | } | |
568 | ||
35277d14 SH |
569 | if (flags & QEMU_NET_PACKET_FLAG_RAW && nc->info->receive_raw) { |
570 | ret = nc->info->receive_raw(nc, data, size); | |
893379ef | 571 | } else { |
35277d14 | 572 | ret = nc->info->receive(nc, data, size); |
893379ef MM |
573 | } |
574 | ||
575 | if (ret == 0) { | |
35277d14 | 576 | nc->receive_disabled = 1; |
b9259652 | 577 | } |
893379ef MM |
578 | |
579 | return ret; | |
9a6ecb30 MM |
580 | } |
581 | ||
35277d14 | 582 | void qemu_purge_queued_packets(NetClientState *nc) |
8cad5516 | 583 | { |
35277d14 | 584 | if (!nc->peer) { |
d80b9fc6 | 585 | return; |
9a6ecb30 | 586 | } |
d80b9fc6 | 587 | |
067404be | 588 | qemu_net_queue_purge(nc->peer->incoming_queue, nc); |
8cad5516 MM |
589 | } |
590 | ||
ca77d85e MT |
591 | static |
592 | void qemu_flush_or_purge_queued_packets(NetClientState *nc, bool purge) | |
e94667b9 | 593 | { |
35277d14 | 594 | nc->receive_disabled = 0; |
9a6ecb30 | 595 | |
199ee608 LR |
596 | if (nc->peer && nc->peer->info->type == NET_CLIENT_OPTIONS_KIND_HUBPORT) { |
597 | if (net_hub_flush(nc->peer)) { | |
598 | qemu_notify_event(); | |
599 | } | |
199ee608 | 600 | } |
067404be | 601 | if (qemu_net_queue_flush(nc->incoming_queue)) { |
987a9b48 PB |
602 | /* We emptied the queue successfully, signal to the IO thread to repoll |
603 | * the file descriptor (for tap, for example). | |
604 | */ | |
605 | qemu_notify_event(); | |
ca77d85e MT |
606 | } else if (purge) { |
607 | /* Unable to empty the queue, purge remaining packets */ | |
608 | qemu_net_queue_purge(nc->incoming_queue, nc); | |
987a9b48 | 609 | } |
e94667b9 MM |
610 | } |
611 | ||
ca77d85e MT |
612 | void qemu_flush_queued_packets(NetClientState *nc) |
613 | { | |
614 | qemu_flush_or_purge_queued_packets(nc, false); | |
615 | } | |
616 | ||
4e68f7a0 | 617 | static ssize_t qemu_send_packet_async_with_flags(NetClientState *sender, |
ca77d175 MM |
618 | unsigned flags, |
619 | const uint8_t *buf, int size, | |
620 | NetPacketSent *sent_cb) | |
764a4d1d | 621 | { |
9a6ecb30 | 622 | NetQueue *queue; |
436e5e53 | 623 | |
63a01ef8 | 624 | #ifdef DEBUG_NET |
d80b9fc6 | 625 | printf("qemu_send_packet_async:\n"); |
63a01ef8 AL |
626 | hex_dump(stdout, buf, size); |
627 | #endif | |
f3b6c7fc | 628 | |
a005d073 | 629 | if (sender->link_down || !sender->peer) { |
9a6ecb30 MM |
630 | return size; |
631 | } | |
632 | ||
067404be | 633 | queue = sender->peer->incoming_queue; |
9a6ecb30 | 634 | |
ca77d175 MM |
635 | return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb); |
636 | } | |
637 | ||
4e68f7a0 | 638 | ssize_t qemu_send_packet_async(NetClientState *sender, |
ca77d175 MM |
639 | const uint8_t *buf, int size, |
640 | NetPacketSent *sent_cb) | |
641 | { | |
642 | return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE, | |
643 | buf, size, sent_cb); | |
f3b6c7fc MM |
644 | } |
645 | ||
35277d14 | 646 | void qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size) |
f3b6c7fc | 647 | { |
35277d14 | 648 | qemu_send_packet_async(nc, buf, size, NULL); |
63a01ef8 AL |
649 | } |
650 | ||
35277d14 | 651 | ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size) |
ca77d175 | 652 | { |
35277d14 | 653 | return qemu_send_packet_async_with_flags(nc, QEMU_NET_PACKET_FLAG_RAW, |
ca77d175 MM |
654 | buf, size, NULL); |
655 | } | |
656 | ||
35277d14 | 657 | static ssize_t nc_sendv_compat(NetClientState *nc, const struct iovec *iov, |
fbe78f4f AL |
658 | int iovcnt) |
659 | { | |
d32fcad3 | 660 | uint8_t buffer[NET_BUFSIZE]; |
ce053661 | 661 | size_t offset; |
fbe78f4f | 662 | |
dcf6f5e1 | 663 | offset = iov_to_buf(iov, iovcnt, 0, buffer, sizeof(buffer)); |
fbe78f4f | 664 | |
35277d14 | 665 | return nc->info->receive(nc, buffer, offset); |
fbe78f4f AL |
666 | } |
667 | ||
86a77c38 ZYW |
668 | ssize_t qemu_deliver_packet_iov(NetClientState *sender, |
669 | unsigned flags, | |
670 | const struct iovec *iov, | |
671 | int iovcnt, | |
672 | void *opaque) | |
9a6ecb30 | 673 | { |
35277d14 | 674 | NetClientState *nc = opaque; |
c67f5dc1 | 675 | int ret; |
9a6ecb30 | 676 | |
35277d14 | 677 | if (nc->link_down) { |
ce053661 | 678 | return iov_size(iov, iovcnt); |
9a6ecb30 MM |
679 | } |
680 | ||
c67f5dc1 SH |
681 | if (nc->receive_disabled) { |
682 | return 0; | |
683 | } | |
684 | ||
35277d14 | 685 | if (nc->info->receive_iov) { |
c67f5dc1 | 686 | ret = nc->info->receive_iov(nc, iov, iovcnt); |
9a6ecb30 | 687 | } else { |
c67f5dc1 SH |
688 | ret = nc_sendv_compat(nc, iov, iovcnt); |
689 | } | |
690 | ||
691 | if (ret == 0) { | |
692 | nc->receive_disabled = 1; | |
e94667b9 | 693 | } |
c67f5dc1 SH |
694 | |
695 | return ret; | |
e94667b9 MM |
696 | } |
697 | ||
4e68f7a0 | 698 | ssize_t qemu_sendv_packet_async(NetClientState *sender, |
f3b6c7fc MM |
699 | const struct iovec *iov, int iovcnt, |
700 | NetPacketSent *sent_cb) | |
e94667b9 | 701 | { |
9a6ecb30 MM |
702 | NetQueue *queue; |
703 | ||
a005d073 | 704 | if (sender->link_down || !sender->peer) { |
ce053661 | 705 | return iov_size(iov, iovcnt); |
e94667b9 MM |
706 | } |
707 | ||
067404be | 708 | queue = sender->peer->incoming_queue; |
9a6ecb30 | 709 | |
c0b8e49c MM |
710 | return qemu_net_queue_send_iov(queue, sender, |
711 | QEMU_NET_PACKET_FLAG_NONE, | |
712 | iov, iovcnt, sent_cb); | |
fbe78f4f AL |
713 | } |
714 | ||
f3b6c7fc | 715 | ssize_t |
35277d14 | 716 | qemu_sendv_packet(NetClientState *nc, const struct iovec *iov, int iovcnt) |
f3b6c7fc | 717 | { |
35277d14 | 718 | return qemu_sendv_packet_async(nc, iov, iovcnt, NULL); |
63a01ef8 AL |
719 | } |
720 | ||
4e68f7a0 | 721 | NetClientState *qemu_find_netdev(const char *id) |
5869c4d5 | 722 | { |
35277d14 | 723 | NetClientState *nc; |
5869c4d5 | 724 | |
35277d14 SH |
725 | QTAILQ_FOREACH(nc, &net_clients, next) { |
726 | if (nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC) | |
85dde9a9 | 727 | continue; |
35277d14 SH |
728 | if (!strcmp(nc->name, id)) { |
729 | return nc; | |
5869c4d5 MM |
730 | } |
731 | } | |
732 | ||
733 | return NULL; | |
734 | } | |
735 | ||
6c51ae73 JW |
736 | int qemu_find_net_clients_except(const char *id, NetClientState **ncs, |
737 | NetClientOptionsKind type, int max) | |
738 | { | |
739 | NetClientState *nc; | |
740 | int ret = 0; | |
741 | ||
742 | QTAILQ_FOREACH(nc, &net_clients, next) { | |
743 | if (nc->info->type == type) { | |
744 | continue; | |
745 | } | |
40d19394 | 746 | if (!id || !strcmp(nc->name, id)) { |
6c51ae73 JW |
747 | if (ret < max) { |
748 | ncs[ret] = nc; | |
749 | } | |
750 | ret++; | |
751 | } | |
752 | } | |
753 | ||
754 | return ret; | |
755 | } | |
756 | ||
7697079b AL |
757 | static int nic_get_free_idx(void) |
758 | { | |
759 | int index; | |
760 | ||
761 | for (index = 0; index < MAX_NICS; index++) | |
762 | if (!nd_table[index].used) | |
763 | return index; | |
764 | return -1; | |
765 | } | |
766 | ||
07caea31 MA |
767 | int qemu_show_nic_models(const char *arg, const char *const *models) |
768 | { | |
769 | int i; | |
770 | ||
c8057f95 | 771 | if (!arg || !is_help_option(arg)) { |
07caea31 | 772 | return 0; |
c8057f95 | 773 | } |
07caea31 MA |
774 | |
775 | fprintf(stderr, "qemu: Supported NIC models: "); | |
776 | for (i = 0 ; models[i]; i++) | |
777 | fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n'); | |
778 | return 1; | |
779 | } | |
780 | ||
d07f22c5 AL |
781 | void qemu_check_nic_model(NICInfo *nd, const char *model) |
782 | { | |
783 | const char *models[2]; | |
784 | ||
785 | models[0] = model; | |
786 | models[1] = NULL; | |
787 | ||
07caea31 MA |
788 | if (qemu_show_nic_models(nd->model, models)) |
789 | exit(0); | |
790 | if (qemu_find_nic_model(nd, models, model) < 0) | |
791 | exit(1); | |
d07f22c5 AL |
792 | } |
793 | ||
07caea31 MA |
794 | int qemu_find_nic_model(NICInfo *nd, const char * const *models, |
795 | const char *default_model) | |
d07f22c5 | 796 | { |
07caea31 | 797 | int i; |
d07f22c5 AL |
798 | |
799 | if (!nd->model) | |
7267c094 | 800 | nd->model = g_strdup(default_model); |
d07f22c5 | 801 | |
07caea31 MA |
802 | for (i = 0 ; models[i]; i++) { |
803 | if (strcmp(nd->model, models[i]) == 0) | |
804 | return i; | |
d07f22c5 AL |
805 | } |
806 | ||
6daf194d | 807 | error_report("Unsupported NIC model: %s", nd->model); |
07caea31 | 808 | return -1; |
d07f22c5 AL |
809 | } |
810 | ||
1a0c0958 | 811 | static int net_init_nic(const NetClientOptions *opts, const char *name, |
a30ecde6 | 812 | NetClientState *peer, Error **errp) |
f83c6e10 MM |
813 | { |
814 | int idx; | |
815 | NICInfo *nd; | |
2456f36f LE |
816 | const NetLegacyNicOptions *nic; |
817 | ||
818 | assert(opts->kind == NET_CLIENT_OPTIONS_KIND_NIC); | |
819 | nic = opts->nic; | |
f83c6e10 MM |
820 | |
821 | idx = nic_get_free_idx(); | |
822 | if (idx == -1 || nb_nics >= MAX_NICS) { | |
66308868 | 823 | error_setg(errp, "too many NICs"); |
f83c6e10 MM |
824 | return -1; |
825 | } | |
826 | ||
827 | nd = &nd_table[idx]; | |
828 | ||
829 | memset(nd, 0, sizeof(*nd)); | |
830 | ||
2456f36f LE |
831 | if (nic->has_netdev) { |
832 | nd->netdev = qemu_find_netdev(nic->netdev); | |
5869c4d5 | 833 | if (!nd->netdev) { |
66308868 | 834 | error_setg(errp, "netdev '%s' not found", nic->netdev); |
5869c4d5 MM |
835 | return -1; |
836 | } | |
837 | } else { | |
d33d93b2 SH |
838 | assert(peer); |
839 | nd->netdev = peer; | |
5869c4d5 | 840 | } |
c64f50d1 | 841 | nd->name = g_strdup(name); |
2456f36f LE |
842 | if (nic->has_model) { |
843 | nd->model = g_strdup(nic->model); | |
f83c6e10 | 844 | } |
2456f36f LE |
845 | if (nic->has_addr) { |
846 | nd->devaddr = g_strdup(nic->addr); | |
f83c6e10 MM |
847 | } |
848 | ||
2456f36f LE |
849 | if (nic->has_macaddr && |
850 | net_parse_macaddr(nd->macaddr.a, nic->macaddr) < 0) { | |
66308868 | 851 | error_setg(errp, "invalid syntax for ethernet address"); |
f83c6e10 MM |
852 | return -1; |
853 | } | |
d60b20cf DK |
854 | if (nic->has_macaddr && |
855 | is_multicast_ether_addr(nd->macaddr.a)) { | |
66308868 MA |
856 | error_setg(errp, |
857 | "NIC cannot have multicast MAC address (odd 1st byte)"); | |
d60b20cf DK |
858 | return -1; |
859 | } | |
6eed1856 | 860 | qemu_macaddr_default_if_unset(&nd->macaddr); |
f83c6e10 | 861 | |
2456f36f LE |
862 | if (nic->has_vectors) { |
863 | if (nic->vectors > 0x7ffffff) { | |
66308868 | 864 | error_setg(errp, "invalid # of vectors: %"PRIu32, nic->vectors); |
2456f36f LE |
865 | return -1; |
866 | } | |
867 | nd->nvectors = nic->vectors; | |
868 | } else { | |
869 | nd->nvectors = DEV_NVECTORS_UNSPECIFIED; | |
f83c6e10 MM |
870 | } |
871 | ||
872 | nd->used = 1; | |
f83c6e10 MM |
873 | nb_nics++; |
874 | ||
875 | return idx; | |
876 | } | |
877 | ||
6687b79d LE |
878 | |
879 | static int (* const net_client_init_fun[NET_CLIENT_OPTIONS_KIND_MAX])( | |
1a0c0958 | 880 | const NetClientOptions *opts, |
6687b79d | 881 | const char *name, |
a30ecde6 | 882 | NetClientState *peer, Error **errp) = { |
f6c874e3 | 883 | [NET_CLIENT_OPTIONS_KIND_NIC] = net_init_nic, |
ec302ffd | 884 | #ifdef CONFIG_SLIRP |
f6c874e3 | 885 | [NET_CLIENT_OPTIONS_KIND_USER] = net_init_slirp, |
2944e4ec | 886 | #endif |
f6c874e3 SH |
887 | [NET_CLIENT_OPTIONS_KIND_TAP] = net_init_tap, |
888 | [NET_CLIENT_OPTIONS_KIND_SOCKET] = net_init_socket, | |
dd51058d | 889 | #ifdef CONFIG_VDE |
f6c874e3 | 890 | [NET_CLIENT_OPTIONS_KIND_VDE] = net_init_vde, |
58952137 VM |
891 | #endif |
892 | #ifdef CONFIG_NETMAP | |
893 | [NET_CLIENT_OPTIONS_KIND_NETMAP] = net_init_netmap, | |
dd51058d | 894 | #endif |
f6c874e3 | 895 | [NET_CLIENT_OPTIONS_KIND_DUMP] = net_init_dump, |
2944e4ec | 896 | #ifdef CONFIG_NET_BRIDGE |
f6c874e3 | 897 | [NET_CLIENT_OPTIONS_KIND_BRIDGE] = net_init_bridge, |
6687b79d | 898 | #endif |
f6c874e3 | 899 | [NET_CLIENT_OPTIONS_KIND_HUBPORT] = net_init_hubport, |
03ce5744 NN |
900 | #ifdef CONFIG_VHOST_NET_USED |
901 | [NET_CLIENT_OPTIONS_KIND_VHOST_USER] = net_init_vhost_user, | |
902 | #endif | |
015a33bd | 903 | #ifdef CONFIG_L2TPV3 |
3fb69aa1 AI |
904 | [NET_CLIENT_OPTIONS_KIND_L2TPV3] = net_init_l2tpv3, |
905 | #endif | |
f83c6e10 MM |
906 | }; |
907 | ||
6687b79d | 908 | |
1a0c0958 | 909 | static int net_client_init1(const void *object, int is_netdev, Error **errp) |
f83c6e10 | 910 | { |
6687b79d LE |
911 | union { |
912 | const Netdev *netdev; | |
913 | const NetLegacy *net; | |
914 | } u; | |
915 | const NetClientOptions *opts; | |
6d952ebe | 916 | const char *name; |
f83c6e10 | 917 | |
5294e2c7 | 918 | if (is_netdev) { |
6687b79d LE |
919 | u.netdev = object; |
920 | opts = u.netdev->opts; | |
921 | name = u.netdev->id; | |
922 | ||
923 | switch (opts->kind) { | |
f6b134ac | 924 | #ifdef CONFIG_SLIRP |
6687b79d | 925 | case NET_CLIENT_OPTIONS_KIND_USER: |
f6b134ac | 926 | #endif |
6687b79d LE |
927 | case NET_CLIENT_OPTIONS_KIND_TAP: |
928 | case NET_CLIENT_OPTIONS_KIND_SOCKET: | |
f6b134ac | 929 | #ifdef CONFIG_VDE |
6687b79d LE |
930 | case NET_CLIENT_OPTIONS_KIND_VDE: |
931 | #endif | |
58952137 VM |
932 | #ifdef CONFIG_NETMAP |
933 | case NET_CLIENT_OPTIONS_KIND_NETMAP: | |
934 | #endif | |
6687b79d LE |
935 | #ifdef CONFIG_NET_BRIDGE |
936 | case NET_CLIENT_OPTIONS_KIND_BRIDGE: | |
f6b134ac | 937 | #endif |
f6c874e3 | 938 | case NET_CLIENT_OPTIONS_KIND_HUBPORT: |
03ce5744 NN |
939 | #ifdef CONFIG_VHOST_NET_USED |
940 | case NET_CLIENT_OPTIONS_KIND_VHOST_USER: | |
3fb69aa1 | 941 | #endif |
015a33bd | 942 | #ifdef CONFIG_L2TPV3 |
3fb69aa1 | 943 | case NET_CLIENT_OPTIONS_KIND_L2TPV3: |
03ce5744 | 944 | #endif |
6687b79d LE |
945 | break; |
946 | ||
947 | default: | |
4559a1db LC |
948 | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "type", |
949 | "a netdev backend type"); | |
f6b134ac MM |
950 | return -1; |
951 | } | |
6687b79d LE |
952 | } else { |
953 | u.net = object; | |
954 | opts = u.net->opts; | |
ca7eb184 MA |
955 | if (opts->kind == NET_CLIENT_OPTIONS_KIND_HUBPORT) { |
956 | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "type", | |
957 | "a net type"); | |
958 | return -1; | |
959 | } | |
6687b79d LE |
960 | /* missing optional values have been initialized to "all bits zero" */ |
961 | name = u.net->has_id ? u.net->id : u.net->name; | |
962 | } | |
f6b134ac | 963 | |
6687b79d | 964 | if (net_client_init_fun[opts->kind]) { |
4e68f7a0 | 965 | NetClientState *peer = NULL; |
6687b79d LE |
966 | |
967 | /* Do not add to a vlan if it's a -netdev or a nic with a netdev= | |
968 | * parameter. */ | |
969 | if (!is_netdev && | |
970 | (opts->kind != NET_CLIENT_OPTIONS_KIND_NIC || | |
971 | !opts->nic->has_netdev)) { | |
d33d93b2 | 972 | peer = net_hub_add_port(u.net->has_vlan ? u.net->vlan : 0, NULL); |
f6b134ac | 973 | } |
6687b79d | 974 | |
a30ecde6 MA |
975 | if (net_client_init_fun[opts->kind](opts, name, peer, errp) < 0) { |
976 | /* FIXME drop when all init functions store an Error */ | |
977 | if (errp && !*errp) { | |
978 | error_set(errp, QERR_DEVICE_INIT_FAILED, | |
979 | NetClientOptionsKind_lookup[opts->kind]); | |
980 | } | |
f6b134ac MM |
981 | return -1; |
982 | } | |
983 | } | |
6687b79d LE |
984 | return 0; |
985 | } | |
986 | ||
f6b134ac | 987 | |
6687b79d LE |
988 | static void net_visit(Visitor *v, int is_netdev, void **object, Error **errp) |
989 | { | |
990 | if (is_netdev) { | |
991 | visit_type_Netdev(v, (Netdev **)object, NULL, errp); | |
992 | } else { | |
993 | visit_type_NetLegacy(v, (NetLegacy **)object, NULL, errp); | |
6d952ebe | 994 | } |
6687b79d | 995 | } |
6d952ebe | 996 | |
f6b134ac | 997 | |
6687b79d LE |
998 | int net_client_init(QemuOpts *opts, int is_netdev, Error **errp) |
999 | { | |
1000 | void *object = NULL; | |
1001 | Error *err = NULL; | |
1002 | int ret = -1; | |
f83c6e10 | 1003 | |
6687b79d LE |
1004 | { |
1005 | OptsVisitor *ov = opts_visitor_new(opts); | |
f6b134ac | 1006 | |
6687b79d LE |
1007 | net_visit(opts_get_visitor(ov), is_netdev, &object, &err); |
1008 | opts_visitor_cleanup(ov); | |
f83c6e10 MM |
1009 | } |
1010 | ||
6687b79d | 1011 | if (!err) { |
1a0c0958 | 1012 | ret = net_client_init1(object, is_netdev, &err); |
6687b79d LE |
1013 | } |
1014 | ||
1015 | if (object) { | |
1016 | QapiDeallocVisitor *dv = qapi_dealloc_visitor_new(); | |
1017 | ||
1018 | net_visit(qapi_dealloc_get_visitor(dv), is_netdev, &object, NULL); | |
1019 | qapi_dealloc_visitor_cleanup(dv); | |
1020 | } | |
1021 | ||
1022 | error_propagate(errp, err); | |
1023 | return ret; | |
f83c6e10 MM |
1024 | } |
1025 | ||
6687b79d | 1026 | |
6f338c34 AL |
1027 | static int net_host_check_device(const char *device) |
1028 | { | |
1029 | int i; | |
84007e81 HB |
1030 | for (i = 0; host_net_devices[i]; i++) { |
1031 | if (!strncmp(host_net_devices[i], device, | |
1032 | strlen(host_net_devices[i]))) { | |
6f338c34 | 1033 | return 1; |
84007e81 | 1034 | } |
6f338c34 AL |
1035 | } |
1036 | ||
1037 | return 0; | |
1038 | } | |
1039 | ||
3e5a50d6 | 1040 | void hmp_host_net_add(Monitor *mon, const QDict *qdict) |
6f338c34 | 1041 | { |
f18c16de | 1042 | const char *device = qdict_get_str(qdict, "device"); |
7f1c9d20 | 1043 | const char *opts_str = qdict_get_try_str(qdict, "opts"); |
4559a1db | 1044 | Error *local_err = NULL; |
7f1c9d20 | 1045 | QemuOpts *opts; |
f18c16de | 1046 | |
6f338c34 | 1047 | if (!net_host_check_device(device)) { |
376253ec | 1048 | monitor_printf(mon, "invalid host network device %s\n", device); |
6f338c34 AL |
1049 | return; |
1050 | } | |
7f1c9d20 | 1051 | |
70b94331 MA |
1052 | opts = qemu_opts_parse_noisily(qemu_find_opts("net"), |
1053 | opts_str ? opts_str : "", false); | |
7f1c9d20 | 1054 | if (!opts) { |
7f1c9d20 MM |
1055 | return; |
1056 | } | |
1057 | ||
f43e47db | 1058 | qemu_opt_set(opts, "type", device, &error_abort); |
7f1c9d20 | 1059 | |
4559a1db | 1060 | net_client_init(opts, 0, &local_err); |
84d18f06 | 1061 | if (local_err) { |
12d0cc2d | 1062 | error_report_err(local_err); |
5c8be678 AL |
1063 | monitor_printf(mon, "adding host network device %s failed\n", device); |
1064 | } | |
6f338c34 AL |
1065 | } |
1066 | ||
3e5a50d6 | 1067 | void hmp_host_net_remove(Monitor *mon, const QDict *qdict) |
6f338c34 | 1068 | { |
35277d14 | 1069 | NetClientState *nc; |
f18c16de LC |
1070 | int vlan_id = qdict_get_int(qdict, "vlan_id"); |
1071 | const char *device = qdict_get_str(qdict, "device"); | |
6f338c34 | 1072 | |
35277d14 SH |
1073 | nc = net_hub_find_client_by_name(vlan_id, device); |
1074 | if (!nc) { | |
86e11772 HB |
1075 | error_report("Host network device '%s' on hub '%d' not found", |
1076 | device, vlan_id); | |
6f338c34 AL |
1077 | return; |
1078 | } | |
7fb43911 | 1079 | if (nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC) { |
86e11772 | 1080 | error_report("invalid host network device '%s'", device); |
e8f1f9db AL |
1081 | return; |
1082 | } | |
64a55d60 JW |
1083 | |
1084 | qemu_del_net_client(nc->peer); | |
b20c6b9e | 1085 | qemu_del_net_client(nc); |
6f338c34 AL |
1086 | } |
1087 | ||
928059a3 LC |
1088 | void netdev_add(QemuOpts *opts, Error **errp) |
1089 | { | |
1090 | net_client_init(opts, 1, errp); | |
1091 | } | |
1092 | ||
1093 | int qmp_netdev_add(Monitor *mon, const QDict *qdict, QObject **ret) | |
ae82d324 | 1094 | { |
4e89978e | 1095 | Error *local_err = NULL; |
928059a3 | 1096 | QemuOptsList *opts_list; |
ae82d324 | 1097 | QemuOpts *opts; |
ae82d324 | 1098 | |
928059a3 | 1099 | opts_list = qemu_find_opts_err("netdev", &local_err); |
84d18f06 | 1100 | if (local_err) { |
928059a3 | 1101 | goto exit_err; |
ae82d324 MA |
1102 | } |
1103 | ||
928059a3 | 1104 | opts = qemu_opts_from_qdict(opts_list, qdict, &local_err); |
84d18f06 | 1105 | if (local_err) { |
928059a3 LC |
1106 | goto exit_err; |
1107 | } | |
1108 | ||
1109 | netdev_add(opts, &local_err); | |
84d18f06 | 1110 | if (local_err) { |
410cbafe | 1111 | qemu_opts_del(opts); |
928059a3 | 1112 | goto exit_err; |
410cbafe YT |
1113 | } |
1114 | ||
928059a3 LC |
1115 | return 0; |
1116 | ||
1117 | exit_err: | |
1118 | qerror_report_err(local_err); | |
1119 | error_free(local_err); | |
1120 | return -1; | |
ae82d324 MA |
1121 | } |
1122 | ||
5f964155 | 1123 | void qmp_netdev_del(const char *id, Error **errp) |
ae82d324 | 1124 | { |
35277d14 | 1125 | NetClientState *nc; |
645c9496 | 1126 | QemuOpts *opts; |
ae82d324 | 1127 | |
35277d14 SH |
1128 | nc = qemu_find_netdev(id); |
1129 | if (!nc) { | |
75158ebb MA |
1130 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
1131 | "Device '%s' not found", id); | |
5f964155 | 1132 | return; |
ae82d324 | 1133 | } |
5f964155 | 1134 | |
645c9496 SH |
1135 | opts = qemu_opts_find(qemu_find_opts_err("netdev", NULL), id); |
1136 | if (!opts) { | |
1137 | error_setg(errp, "Device '%s' is not a netdev", id); | |
1138 | return; | |
1139 | } | |
1140 | ||
b20c6b9e | 1141 | qemu_del_net_client(nc); |
645c9496 | 1142 | qemu_opts_del(opts); |
ae82d324 MA |
1143 | } |
1144 | ||
1a859593 | 1145 | void print_net_client(Monitor *mon, NetClientState *nc) |
44e798d3 | 1146 | { |
1ceef9f2 JW |
1147 | monitor_printf(mon, "%s: index=%d,type=%s,%s\n", nc->name, |
1148 | nc->queue_index, | |
1149 | NetClientOptionsKind_lookup[nc->info->type], | |
1150 | nc->info_str); | |
44e798d3 JK |
1151 | } |
1152 | ||
b1be4280 AK |
1153 | RxFilterInfoList *qmp_query_rx_filter(bool has_name, const char *name, |
1154 | Error **errp) | |
1155 | { | |
1156 | NetClientState *nc; | |
1157 | RxFilterInfoList *filter_list = NULL, *last_entry = NULL; | |
1158 | ||
1159 | QTAILQ_FOREACH(nc, &net_clients, next) { | |
1160 | RxFilterInfoList *entry; | |
1161 | RxFilterInfo *info; | |
1162 | ||
1163 | if (has_name && strcmp(nc->name, name) != 0) { | |
1164 | continue; | |
1165 | } | |
1166 | ||
1167 | /* only query rx-filter information of NIC */ | |
1168 | if (nc->info->type != NET_CLIENT_OPTIONS_KIND_NIC) { | |
1169 | if (has_name) { | |
1170 | error_setg(errp, "net client(%s) isn't a NIC", name); | |
9083da1d | 1171 | return NULL; |
b1be4280 AK |
1172 | } |
1173 | continue; | |
1174 | } | |
1175 | ||
1176 | if (nc->info->query_rx_filter) { | |
1177 | info = nc->info->query_rx_filter(nc); | |
1178 | entry = g_malloc0(sizeof(*entry)); | |
1179 | entry->value = info; | |
1180 | ||
1181 | if (!filter_list) { | |
1182 | filter_list = entry; | |
1183 | } else { | |
1184 | last_entry->next = entry; | |
1185 | } | |
1186 | last_entry = entry; | |
1187 | } else if (has_name) { | |
1188 | error_setg(errp, "net client(%s) doesn't support" | |
1189 | " rx-filter querying", name); | |
9083da1d | 1190 | return NULL; |
b1be4280 | 1191 | } |
638fb141 MA |
1192 | |
1193 | if (has_name) { | |
1194 | break; | |
1195 | } | |
b1be4280 AK |
1196 | } |
1197 | ||
9083da1d | 1198 | if (filter_list == NULL && has_name) { |
b1be4280 AK |
1199 | error_setg(errp, "invalid net client name: %s", name); |
1200 | } | |
1201 | ||
1202 | return filter_list; | |
1203 | } | |
1204 | ||
1ce6be24 | 1205 | void hmp_info_network(Monitor *mon, const QDict *qdict) |
63a01ef8 | 1206 | { |
35277d14 | 1207 | NetClientState *nc, *peer; |
2be64a68 | 1208 | NetClientOptionsKind type; |
63a01ef8 | 1209 | |
1a859593 ZYW |
1210 | net_hub_info(mon); |
1211 | ||
35277d14 SH |
1212 | QTAILQ_FOREACH(nc, &net_clients, next) { |
1213 | peer = nc->peer; | |
1214 | type = nc->info->type; | |
5610c3aa | 1215 | |
1a859593 ZYW |
1216 | /* Skip if already printed in hub info */ |
1217 | if (net_hub_id_for_client(nc, NULL) == 0) { | |
1218 | continue; | |
5610c3aa | 1219 | } |
1a859593 | 1220 | |
2be64a68 | 1221 | if (!peer || type == NET_CLIENT_OPTIONS_KIND_NIC) { |
35277d14 | 1222 | print_net_client(mon, nc); |
19061e63 | 1223 | } /* else it's a netdev connected to a NIC, printed with the NIC */ |
2be64a68 | 1224 | if (peer && type == NET_CLIENT_OPTIONS_KIND_NIC) { |
1a859593 | 1225 | monitor_printf(mon, " \\ "); |
44e798d3 | 1226 | print_net_client(mon, peer); |
a0104e0e | 1227 | } |
a0104e0e | 1228 | } |
63a01ef8 AL |
1229 | } |
1230 | ||
4b37156c | 1231 | void qmp_set_link(const char *name, bool up, Error **errp) |
436e5e53 | 1232 | { |
1ceef9f2 JW |
1233 | NetClientState *ncs[MAX_QUEUE_NUM]; |
1234 | NetClientState *nc; | |
1235 | int queues, i; | |
436e5e53 | 1236 | |
1ceef9f2 JW |
1237 | queues = qemu_find_net_clients_except(name, ncs, |
1238 | NET_CLIENT_OPTIONS_KIND_MAX, | |
1239 | MAX_QUEUE_NUM); | |
1240 | ||
1241 | if (queues == 0) { | |
75158ebb MA |
1242 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
1243 | "Device '%s' not found", name); | |
4b37156c | 1244 | return; |
436e5e53 | 1245 | } |
1ceef9f2 | 1246 | nc = ncs[0]; |
436e5e53 | 1247 | |
1ceef9f2 JW |
1248 | for (i = 0; i < queues; i++) { |
1249 | ncs[i]->link_down = !up; | |
1250 | } | |
436e5e53 | 1251 | |
35277d14 SH |
1252 | if (nc->info->link_status_changed) { |
1253 | nc->info->link_status_changed(nc); | |
665a3b07 | 1254 | } |
ab1cbe1c | 1255 | |
02d38fcb VY |
1256 | if (nc->peer) { |
1257 | /* Change peer link only if the peer is NIC and then notify peer. | |
1258 | * If the peer is a HUBPORT or a backend, we do not change the | |
1259 | * link status. | |
1260 | * | |
1261 | * This behavior is compatible with qemu vlans where there could be | |
1262 | * multiple clients that can still communicate with each other in | |
1263 | * disconnected mode. For now maintain this compatibility. | |
1264 | */ | |
1265 | if (nc->peer->info->type == NET_CLIENT_OPTIONS_KIND_NIC) { | |
1266 | for (i = 0; i < queues; i++) { | |
1267 | ncs[i]->peer->link_down = !up; | |
1268 | } | |
1269 | } | |
1270 | if (nc->peer->info->link_status_changed) { | |
1271 | nc->peer->info->link_status_changed(nc->peer); | |
1272 | } | |
ab1cbe1c | 1273 | } |
436e5e53 AL |
1274 | } |
1275 | ||
ca77d85e MT |
1276 | static void net_vm_change_state_handler(void *opaque, int running, |
1277 | RunState state) | |
1278 | { | |
1279 | /* Complete all queued packets, to guarantee we don't modify | |
1280 | * state later when VM is not running. | |
1281 | */ | |
1282 | if (!running) { | |
1283 | NetClientState *nc; | |
1284 | NetClientState *tmp; | |
1285 | ||
1286 | QTAILQ_FOREACH_SAFE(nc, &net_clients, next, tmp) { | |
1287 | qemu_flush_or_purge_queued_packets(nc, true); | |
1288 | } | |
1289 | } | |
1290 | } | |
1291 | ||
63a01ef8 AL |
1292 | void net_cleanup(void) |
1293 | { | |
1ceef9f2 | 1294 | NetClientState *nc; |
577c4af9 | 1295 | |
1ceef9f2 JW |
1296 | /* We may del multiple entries during qemu_del_net_client(), |
1297 | * so QTAILQ_FOREACH_SAFE() is also not safe here. | |
1298 | */ | |
1299 | while (!QTAILQ_EMPTY(&net_clients)) { | |
1300 | nc = QTAILQ_FIRST(&net_clients); | |
948ecf21 JW |
1301 | if (nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC) { |
1302 | qemu_del_nic(qemu_get_nic(nc)); | |
1303 | } else { | |
1304 | qemu_del_net_client(nc); | |
1305 | } | |
577c4af9 | 1306 | } |
ca77d85e MT |
1307 | |
1308 | qemu_del_vm_change_state_handler(net_change_state_entry); | |
63a01ef8 AL |
1309 | } |
1310 | ||
668680f7 | 1311 | void net_check_clients(void) |
63a01ef8 | 1312 | { |
35277d14 | 1313 | NetClientState *nc; |
48e2faf2 | 1314 | int i; |
63a01ef8 | 1315 | |
641f6eae PM |
1316 | /* Don't warn about the default network setup that you get if |
1317 | * no command line -net or -netdev options are specified. There | |
1318 | * are two cases that we would otherwise complain about: | |
1319 | * (1) board doesn't support a NIC but the implicit "-net nic" | |
1320 | * requested one | |
1321 | * (2) CONFIG_SLIRP not set, in which case the implicit "-net nic" | |
1322 | * sets up a nic that isn't connected to anything. | |
1323 | */ | |
1324 | if (default_net) { | |
1325 | return; | |
1326 | } | |
1327 | ||
81017645 | 1328 | net_hub_check_clients(); |
ac60cc18 | 1329 | |
35277d14 SH |
1330 | QTAILQ_FOREACH(nc, &net_clients, next) { |
1331 | if (!nc->peer) { | |
efe32fdd | 1332 | fprintf(stderr, "Warning: %s %s has no peer\n", |
35277d14 SH |
1333 | nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC ? |
1334 | "nic" : "netdev", nc->name); | |
efe32fdd MA |
1335 | } |
1336 | } | |
48e2faf2 PM |
1337 | |
1338 | /* Check that all NICs requested via -net nic actually got created. | |
1339 | * NICs created via -device don't need to be checked here because | |
1340 | * they are always instantiated. | |
1341 | */ | |
1342 | for (i = 0; i < MAX_NICS; i++) { | |
1343 | NICInfo *nd = &nd_table[i]; | |
1344 | if (nd->used && !nd->instantiated) { | |
1345 | fprintf(stderr, "Warning: requested NIC (%s, model %s) " | |
1346 | "was not created (not supported by this machine?)\n", | |
1347 | nd->name ? nd->name : "anonymous", | |
1348 | nd->model ? nd->model : "unspecified"); | |
1349 | } | |
1350 | } | |
63a01ef8 | 1351 | } |
dc1c9fe8 | 1352 | |
28d0de7a | 1353 | static int net_init_client(void *dummy, QemuOpts *opts, Error **errp) |
dc1c9fe8 | 1354 | { |
4559a1db LC |
1355 | Error *local_err = NULL; |
1356 | ||
1357 | net_client_init(opts, 0, &local_err); | |
84d18f06 | 1358 | if (local_err) { |
12d0cc2d | 1359 | error_report_err(local_err); |
c1671a08 | 1360 | return -1; |
4559a1db LC |
1361 | } |
1362 | ||
c1671a08 | 1363 | return 0; |
f6b134ac MM |
1364 | } |
1365 | ||
28d0de7a | 1366 | static int net_init_netdev(void *dummy, QemuOpts *opts, Error **errp) |
f6b134ac | 1367 | { |
4559a1db LC |
1368 | Error *local_err = NULL; |
1369 | int ret; | |
1370 | ||
1371 | ret = net_client_init(opts, 1, &local_err); | |
84d18f06 | 1372 | if (local_err) { |
12d0cc2d | 1373 | error_report_err(local_err); |
4559a1db LC |
1374 | return -1; |
1375 | } | |
1376 | ||
1377 | return ret; | |
dc1c9fe8 MM |
1378 | } |
1379 | ||
1380 | int net_init_clients(void) | |
1381 | { | |
3329f07b GH |
1382 | QemuOptsList *net = qemu_find_opts("net"); |
1383 | ||
cb4522cc | 1384 | if (default_net) { |
dc1c9fe8 | 1385 | /* if no clients, we use a default config */ |
79087c78 | 1386 | qemu_opts_set(net, NULL, "type", "nic", &error_abort); |
dc1c9fe8 | 1387 | #ifdef CONFIG_SLIRP |
79087c78 | 1388 | qemu_opts_set(net, NULL, "type", "user", &error_abort); |
dc1c9fe8 MM |
1389 | #endif |
1390 | } | |
1391 | ||
ca77d85e MT |
1392 | net_change_state_entry = |
1393 | qemu_add_vm_change_state_handler(net_vm_change_state_handler, NULL); | |
1394 | ||
94878994 | 1395 | QTAILQ_INIT(&net_clients); |
5610c3aa | 1396 | |
28d0de7a MA |
1397 | if (qemu_opts_foreach(qemu_find_opts("netdev"), |
1398 | net_init_netdev, NULL, NULL)) { | |
f6b134ac | 1399 | return -1; |
a4c7367f | 1400 | } |
f6b134ac | 1401 | |
28d0de7a | 1402 | if (qemu_opts_foreach(net, net_init_client, NULL, NULL)) { |
dc1c9fe8 MM |
1403 | return -1; |
1404 | } | |
1405 | ||
dc1c9fe8 MM |
1406 | return 0; |
1407 | } | |
1408 | ||
7f161aae | 1409 | int net_client_parse(QemuOptsList *opts_list, const char *optarg) |
dc1c9fe8 | 1410 | { |
a3a766e7 | 1411 | #if defined(CONFIG_SLIRP) |
68ac40d2 MM |
1412 | int ret; |
1413 | if (net_slirp_parse_legacy(opts_list, optarg, &ret)) { | |
dc1c9fe8 MM |
1414 | return ret; |
1415 | } | |
a3a766e7 | 1416 | #endif |
68ac40d2 | 1417 | |
70b94331 | 1418 | if (!qemu_opts_parse_noisily(opts_list, optarg, true)) { |
dc1c9fe8 MM |
1419 | return -1; |
1420 | } | |
1421 | ||
cb4522cc | 1422 | default_net = 0; |
dc1c9fe8 MM |
1423 | return 0; |
1424 | } | |
7fc8d918 JW |
1425 | |
1426 | /* From FreeBSD */ | |
1427 | /* XXX: optimize */ | |
1428 | unsigned compute_mcast_idx(const uint8_t *ep) | |
1429 | { | |
1430 | uint32_t crc; | |
1431 | int carry, i, j; | |
1432 | uint8_t b; | |
1433 | ||
1434 | crc = 0xffffffff; | |
1435 | for (i = 0; i < 6; i++) { | |
1436 | b = *ep++; | |
1437 | for (j = 0; j < 8; j++) { | |
1438 | carry = ((crc & 0x80000000L) ? 1 : 0) ^ (b & 0x01); | |
1439 | crc <<= 1; | |
1440 | b >>= 1; | |
1441 | if (carry) { | |
1442 | crc = ((crc ^ POLYNOMIAL) | carry); | |
1443 | } | |
1444 | } | |
1445 | } | |
1446 | return crc >> 26; | |
1447 | } | |
4d454574 PB |
1448 | |
1449 | QemuOptsList qemu_netdev_opts = { | |
1450 | .name = "netdev", | |
1451 | .implied_opt_name = "type", | |
1452 | .head = QTAILQ_HEAD_INITIALIZER(qemu_netdev_opts.head), | |
1453 | .desc = { | |
1454 | /* | |
1455 | * no elements => accept any params | |
1456 | * validation will happen later | |
1457 | */ | |
1458 | { /* end of list */ } | |
1459 | }, | |
1460 | }; | |
1461 | ||
1462 | QemuOptsList qemu_net_opts = { | |
1463 | .name = "net", | |
1464 | .implied_opt_name = "type", | |
1465 | .head = QTAILQ_HEAD_INITIALIZER(qemu_net_opts.head), | |
1466 | .desc = { | |
1467 | /* | |
1468 | * no elements => accept any params | |
1469 | * validation will happen later | |
1470 | */ | |
1471 | { /* end of list */ } | |
1472 | }, | |
1473 | }; |