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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" |
d49b6836 | 35 | #include "qemu/error-report.h" |
1de7afc9 PB |
36 | #include "qemu/sockets.h" |
37 | #include "qemu/config-file.h" | |
4b37156c | 38 | #include "qmp-commands.h" |
75422b0d | 39 | #include "hw/qdev.h" |
1de7afc9 | 40 | #include "qemu/iov.h" |
6a1751b7 | 41 | #include "qemu/main-loop.h" |
6687b79d LE |
42 | #include "qapi-visit.h" |
43 | #include "qapi/opts-visitor.h" | |
7b1b5d19 | 44 | #include "qapi/dealloc-visitor.h" |
e1d64c08 | 45 | #include "sysemu/sysemu.h" |
511d2b14 | 46 | |
2944e4ec SW |
47 | /* Net bridge is currently not supported for W32. */ |
48 | #if !defined(_WIN32) | |
49 | # define CONFIG_NET_BRIDGE | |
50 | #endif | |
51 | ||
ca77d85e | 52 | static VMChangeStateEntry *net_change_state_entry; |
4e68f7a0 | 53 | static QTAILQ_HEAD(, NetClientState) net_clients; |
63a01ef8 | 54 | |
84007e81 HB |
55 | const char *host_net_devices[] = { |
56 | "tap", | |
57 | "socket", | |
58 | "dump", | |
59 | #ifdef CONFIG_NET_BRIDGE | |
60 | "bridge", | |
61 | #endif | |
62 | #ifdef CONFIG_SLIRP | |
63 | "user", | |
64 | #endif | |
65 | #ifdef CONFIG_VDE | |
66 | "vde", | |
67 | #endif | |
03ce5744 | 68 | "vhost-user", |
84007e81 HB |
69 | NULL, |
70 | }; | |
71 | ||
cb4522cc GH |
72 | int default_net = 1; |
73 | ||
63a01ef8 AL |
74 | /***********************************************************/ |
75 | /* network device redirectors */ | |
76 | ||
68ac40d2 | 77 | #if defined(DEBUG_NET) |
63a01ef8 AL |
78 | static void hex_dump(FILE *f, const uint8_t *buf, int size) |
79 | { | |
80 | int len, i, j, c; | |
81 | ||
82 | for(i=0;i<size;i+=16) { | |
83 | len = size - i; | |
84 | if (len > 16) | |
85 | len = 16; | |
86 | fprintf(f, "%08x ", i); | |
87 | for(j=0;j<16;j++) { | |
88 | if (j < len) | |
89 | fprintf(f, " %02x", buf[i+j]); | |
90 | else | |
91 | fprintf(f, " "); | |
92 | } | |
93 | fprintf(f, " "); | |
94 | for(j=0;j<len;j++) { | |
95 | c = buf[i+j]; | |
96 | if (c < ' ' || c > '~') | |
97 | c = '.'; | |
98 | fprintf(f, "%c", c); | |
99 | } | |
100 | fprintf(f, "\n"); | |
101 | } | |
102 | } | |
103 | #endif | |
104 | ||
63a01ef8 AL |
105 | static int get_str_sep(char *buf, int buf_size, const char **pp, int sep) |
106 | { | |
107 | const char *p, *p1; | |
108 | int len; | |
109 | p = *pp; | |
110 | p1 = strchr(p, sep); | |
111 | if (!p1) | |
112 | return -1; | |
113 | len = p1 - p; | |
114 | p1++; | |
115 | if (buf_size > 0) { | |
116 | if (len > buf_size - 1) | |
117 | len = buf_size - 1; | |
118 | memcpy(buf, p, len); | |
119 | buf[len] = '\0'; | |
120 | } | |
121 | *pp = p1; | |
122 | return 0; | |
123 | } | |
124 | ||
63a01ef8 AL |
125 | int parse_host_port(struct sockaddr_in *saddr, const char *str) |
126 | { | |
127 | char buf[512]; | |
128 | struct hostent *he; | |
129 | const char *p, *r; | |
130 | int port; | |
131 | ||
132 | p = str; | |
133 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) | |
134 | return -1; | |
135 | saddr->sin_family = AF_INET; | |
136 | if (buf[0] == '\0') { | |
137 | saddr->sin_addr.s_addr = 0; | |
138 | } else { | |
cd390083 | 139 | if (qemu_isdigit(buf[0])) { |
63a01ef8 AL |
140 | if (!inet_aton(buf, &saddr->sin_addr)) |
141 | return -1; | |
142 | } else { | |
143 | if ((he = gethostbyname(buf)) == NULL) | |
144 | return - 1; | |
145 | saddr->sin_addr = *(struct in_addr *)he->h_addr; | |
146 | } | |
147 | } | |
148 | port = strtol(p, (char **)&r, 0); | |
149 | if (r == p) | |
150 | return -1; | |
151 | saddr->sin_port = htons(port); | |
152 | return 0; | |
153 | } | |
154 | ||
890ee6ab SF |
155 | char *qemu_mac_strdup_printf(const uint8_t *macaddr) |
156 | { | |
157 | return g_strdup_printf("%.2x:%.2x:%.2x:%.2x:%.2x:%.2x", | |
158 | macaddr[0], macaddr[1], macaddr[2], | |
159 | macaddr[3], macaddr[4], macaddr[5]); | |
160 | } | |
161 | ||
35277d14 | 162 | void qemu_format_nic_info_str(NetClientState *nc, uint8_t macaddr[6]) |
7cb7434b | 163 | { |
35277d14 | 164 | snprintf(nc->info_str, sizeof(nc->info_str), |
4dda4063 | 165 | "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x", |
35277d14 | 166 | nc->model, |
7cb7434b AL |
167 | macaddr[0], macaddr[1], macaddr[2], |
168 | macaddr[3], macaddr[4], macaddr[5]); | |
169 | } | |
170 | ||
2bc22a58 SZ |
171 | static int mac_table[256] = {0}; |
172 | ||
173 | static void qemu_macaddr_set_used(MACAddr *macaddr) | |
174 | { | |
175 | int index; | |
176 | ||
177 | for (index = 0x56; index < 0xFF; index++) { | |
178 | if (macaddr->a[5] == index) { | |
179 | mac_table[index]++; | |
180 | } | |
181 | } | |
182 | } | |
183 | ||
184 | static void qemu_macaddr_set_free(MACAddr *macaddr) | |
185 | { | |
186 | int index; | |
187 | static const MACAddr base = { .a = { 0x52, 0x54, 0x00, 0x12, 0x34, 0 } }; | |
188 | ||
189 | if (memcmp(macaddr->a, &base.a, (sizeof(base.a) - 1)) != 0) { | |
190 | return; | |
191 | } | |
192 | for (index = 0x56; index < 0xFF; index++) { | |
193 | if (macaddr->a[5] == index) { | |
194 | mac_table[index]--; | |
195 | } | |
196 | } | |
197 | } | |
198 | ||
199 | static int qemu_macaddr_get_free(void) | |
200 | { | |
201 | int index; | |
202 | ||
203 | for (index = 0x56; index < 0xFF; index++) { | |
204 | if (mac_table[index] == 0) { | |
205 | return index; | |
206 | } | |
207 | } | |
208 | ||
209 | return -1; | |
210 | } | |
211 | ||
76d32cba GH |
212 | void qemu_macaddr_default_if_unset(MACAddr *macaddr) |
213 | { | |
76d32cba | 214 | static const MACAddr zero = { .a = { 0,0,0,0,0,0 } }; |
2bc22a58 SZ |
215 | static const MACAddr base = { .a = { 0x52, 0x54, 0x00, 0x12, 0x34, 0 } }; |
216 | ||
217 | if (memcmp(macaddr, &zero, sizeof(zero)) != 0) { | |
218 | if (memcmp(macaddr->a, &base.a, (sizeof(base.a) - 1)) != 0) { | |
219 | return; | |
220 | } else { | |
221 | qemu_macaddr_set_used(macaddr); | |
222 | return; | |
223 | } | |
224 | } | |
76d32cba | 225 | |
76d32cba GH |
226 | macaddr->a[0] = 0x52; |
227 | macaddr->a[1] = 0x54; | |
228 | macaddr->a[2] = 0x00; | |
229 | macaddr->a[3] = 0x12; | |
230 | macaddr->a[4] = 0x34; | |
2bc22a58 SZ |
231 | macaddr->a[5] = qemu_macaddr_get_free(); |
232 | qemu_macaddr_set_used(macaddr); | |
76d32cba GH |
233 | } |
234 | ||
d33d93b2 SH |
235 | /** |
236 | * Generate a name for net client | |
237 | * | |
c963530a | 238 | * Only net clients created with the legacy -net option and NICs need this. |
d33d93b2 | 239 | */ |
35277d14 | 240 | static char *assign_name(NetClientState *nc1, const char *model) |
676cff29 | 241 | { |
35277d14 | 242 | NetClientState *nc; |
676cff29 AL |
243 | int id = 0; |
244 | ||
35277d14 SH |
245 | QTAILQ_FOREACH(nc, &net_clients, next) { |
246 | if (nc == nc1) { | |
d33d93b2 | 247 | continue; |
5610c3aa | 248 | } |
c963530a | 249 | if (strcmp(nc->model, model) == 0) { |
53e51d85 MA |
250 | id++; |
251 | } | |
252 | } | |
253 | ||
4bf2c138 | 254 | return g_strdup_printf("%s.%d", model, id); |
676cff29 AL |
255 | } |
256 | ||
f7860455 JW |
257 | static void qemu_net_client_destructor(NetClientState *nc) |
258 | { | |
259 | g_free(nc); | |
260 | } | |
261 | ||
18a1541a JW |
262 | static void qemu_net_client_setup(NetClientState *nc, |
263 | NetClientInfo *info, | |
264 | NetClientState *peer, | |
265 | const char *model, | |
f7860455 JW |
266 | const char *name, |
267 | NetClientDestructor *destructor) | |
63a01ef8 | 268 | { |
35277d14 SH |
269 | nc->info = info; |
270 | nc->model = g_strdup(model); | |
45460d1a | 271 | if (name) { |
35277d14 | 272 | nc->name = g_strdup(name); |
45460d1a | 273 | } else { |
35277d14 | 274 | nc->name = assign_name(nc, model); |
45460d1a | 275 | } |
5610c3aa | 276 | |
ab5f3f84 SH |
277 | if (peer) { |
278 | assert(!peer->peer); | |
35277d14 SH |
279 | nc->peer = peer; |
280 | peer->peer = nc; | |
d80b9fc6 | 281 | } |
35277d14 | 282 | QTAILQ_INSERT_TAIL(&net_clients, nc, next); |
63a01ef8 | 283 | |
067404be | 284 | nc->incoming_queue = qemu_new_net_queue(nc); |
f7860455 | 285 | nc->destructor = destructor; |
18a1541a JW |
286 | } |
287 | ||
288 | NetClientState *qemu_new_net_client(NetClientInfo *info, | |
289 | NetClientState *peer, | |
290 | const char *model, | |
291 | const char *name) | |
292 | { | |
293 | NetClientState *nc; | |
294 | ||
295 | assert(info->size >= sizeof(NetClientState)); | |
296 | ||
297 | nc = g_malloc0(info->size); | |
f7860455 JW |
298 | qemu_net_client_setup(nc, info, peer, model, name, |
299 | qemu_net_client_destructor); | |
18a1541a | 300 | |
35277d14 | 301 | return nc; |
63a01ef8 AL |
302 | } |
303 | ||
ebef2c09 MM |
304 | NICState *qemu_new_nic(NetClientInfo *info, |
305 | NICConf *conf, | |
306 | const char *model, | |
307 | const char *name, | |
308 | void *opaque) | |
309 | { | |
1ceef9f2 | 310 | NetClientState **peers = conf->peers.ncs; |
ebef2c09 | 311 | NICState *nic; |
575a1c0e | 312 | int i, queues = MAX(1, conf->peers.queues); |
ebef2c09 | 313 | |
2be64a68 | 314 | assert(info->type == NET_CLIENT_OPTIONS_KIND_NIC); |
ebef2c09 MM |
315 | assert(info->size >= sizeof(NICState)); |
316 | ||
f6b26cf2 JW |
317 | nic = g_malloc0(info->size + sizeof(NetClientState) * queues); |
318 | nic->ncs = (void *)nic + info->size; | |
ebef2c09 MM |
319 | nic->conf = conf; |
320 | nic->opaque = opaque; | |
321 | ||
f6b26cf2 JW |
322 | for (i = 0; i < queues; i++) { |
323 | qemu_net_client_setup(&nic->ncs[i], info, peers[i], model, name, | |
1ceef9f2 JW |
324 | NULL); |
325 | nic->ncs[i].queue_index = i; | |
326 | } | |
327 | ||
ebef2c09 MM |
328 | return nic; |
329 | } | |
330 | ||
1ceef9f2 JW |
331 | NetClientState *qemu_get_subqueue(NICState *nic, int queue_index) |
332 | { | |
f6b26cf2 | 333 | return nic->ncs + queue_index; |
1ceef9f2 JW |
334 | } |
335 | ||
b356f76d JW |
336 | NetClientState *qemu_get_queue(NICState *nic) |
337 | { | |
1ceef9f2 | 338 | return qemu_get_subqueue(nic, 0); |
b356f76d JW |
339 | } |
340 | ||
cc1f0f45 JW |
341 | NICState *qemu_get_nic(NetClientState *nc) |
342 | { | |
1ceef9f2 JW |
343 | NetClientState *nc0 = nc - nc->queue_index; |
344 | ||
f6b26cf2 | 345 | return (NICState *)((void *)nc0 - nc->info->size); |
cc1f0f45 JW |
346 | } |
347 | ||
348 | void *qemu_get_nic_opaque(NetClientState *nc) | |
349 | { | |
350 | NICState *nic = qemu_get_nic(nc); | |
351 | ||
352 | return nic->opaque; | |
353 | } | |
354 | ||
b20c6b9e | 355 | static void qemu_cleanup_net_client(NetClientState *nc) |
63a01ef8 | 356 | { |
35277d14 | 357 | QTAILQ_REMOVE(&net_clients, nc, next); |
63a01ef8 | 358 | |
cc2a9043 AF |
359 | if (nc->info->cleanup) { |
360 | nc->info->cleanup(nc); | |
361 | } | |
a083a89d | 362 | } |
5610c3aa | 363 | |
b20c6b9e | 364 | static void qemu_free_net_client(NetClientState *nc) |
a083a89d | 365 | { |
067404be JK |
366 | if (nc->incoming_queue) { |
367 | qemu_del_net_queue(nc->incoming_queue); | |
a005d073 | 368 | } |
35277d14 SH |
369 | if (nc->peer) { |
370 | nc->peer->peer = NULL; | |
a083a89d | 371 | } |
35277d14 SH |
372 | g_free(nc->name); |
373 | g_free(nc->model); | |
f7860455 JW |
374 | if (nc->destructor) { |
375 | nc->destructor(nc); | |
376 | } | |
63a01ef8 AL |
377 | } |
378 | ||
b20c6b9e | 379 | void qemu_del_net_client(NetClientState *nc) |
a083a89d | 380 | { |
1ceef9f2 JW |
381 | NetClientState *ncs[MAX_QUEUE_NUM]; |
382 | int queues, i; | |
383 | ||
7fb43911 PB |
384 | assert(nc->info->type != NET_CLIENT_OPTIONS_KIND_NIC); |
385 | ||
1ceef9f2 JW |
386 | /* If the NetClientState belongs to a multiqueue backend, we will change all |
387 | * other NetClientStates also. | |
388 | */ | |
389 | queues = qemu_find_net_clients_except(nc->name, ncs, | |
390 | NET_CLIENT_OPTIONS_KIND_NIC, | |
391 | MAX_QUEUE_NUM); | |
392 | assert(queues != 0); | |
393 | ||
a083a89d | 394 | /* If there is a peer NIC, delete and cleanup client, but do not free. */ |
35277d14 | 395 | if (nc->peer && nc->peer->info->type == NET_CLIENT_OPTIONS_KIND_NIC) { |
cc1f0f45 | 396 | NICState *nic = qemu_get_nic(nc->peer); |
a083a89d MT |
397 | if (nic->peer_deleted) { |
398 | return; | |
399 | } | |
400 | nic->peer_deleted = true; | |
1ceef9f2 JW |
401 | |
402 | for (i = 0; i < queues; i++) { | |
403 | ncs[i]->peer->link_down = true; | |
404 | } | |
405 | ||
35277d14 SH |
406 | if (nc->peer->info->link_status_changed) { |
407 | nc->peer->info->link_status_changed(nc->peer); | |
a083a89d | 408 | } |
1ceef9f2 JW |
409 | |
410 | for (i = 0; i < queues; i++) { | |
411 | qemu_cleanup_net_client(ncs[i]); | |
412 | } | |
413 | ||
a083a89d MT |
414 | return; |
415 | } | |
416 | ||
1ceef9f2 JW |
417 | for (i = 0; i < queues; i++) { |
418 | qemu_cleanup_net_client(ncs[i]); | |
419 | qemu_free_net_client(ncs[i]); | |
420 | } | |
948ecf21 JW |
421 | } |
422 | ||
423 | void qemu_del_nic(NICState *nic) | |
424 | { | |
575a1c0e | 425 | int i, queues = MAX(nic->conf->peers.queues, 1); |
1ceef9f2 | 426 | |
2bc22a58 SZ |
427 | qemu_macaddr_set_free(&nic->conf->macaddr); |
428 | ||
a083a89d | 429 | /* If this is a peer NIC and peer has already been deleted, free it now. */ |
1ceef9f2 JW |
430 | if (nic->peer_deleted) { |
431 | for (i = 0; i < queues; i++) { | |
432 | qemu_free_net_client(qemu_get_subqueue(nic, i)->peer); | |
1a609520 JK |
433 | } |
434 | } | |
1a609520 | 435 | |
1ceef9f2 JW |
436 | for (i = queues - 1; i >= 0; i--) { |
437 | NetClientState *nc = qemu_get_subqueue(nic, i); | |
438 | ||
439 | qemu_cleanup_net_client(nc); | |
440 | qemu_free_net_client(nc); | |
441 | } | |
f6b26cf2 JW |
442 | |
443 | g_free(nic); | |
1a609520 JK |
444 | } |
445 | ||
57f9ef17 MM |
446 | void qemu_foreach_nic(qemu_nic_foreach func, void *opaque) |
447 | { | |
4e68f7a0 | 448 | NetClientState *nc; |
57f9ef17 | 449 | |
94878994 | 450 | QTAILQ_FOREACH(nc, &net_clients, next) { |
2be64a68 | 451 | if (nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC) { |
1ceef9f2 JW |
452 | if (nc->queue_index == 0) { |
453 | func(qemu_get_nic(nc), opaque); | |
454 | } | |
57f9ef17 MM |
455 | } |
456 | } | |
57f9ef17 MM |
457 | } |
458 | ||
d6085e3a | 459 | bool qemu_has_ufo(NetClientState *nc) |
1f55ac45 | 460 | { |
d6085e3a | 461 | if (!nc || !nc->info->has_ufo) { |
1f55ac45 VM |
462 | return false; |
463 | } | |
464 | ||
d6085e3a | 465 | return nc->info->has_ufo(nc); |
1f55ac45 VM |
466 | } |
467 | ||
d6085e3a | 468 | bool qemu_has_vnet_hdr(NetClientState *nc) |
1f55ac45 | 469 | { |
d6085e3a | 470 | if (!nc || !nc->info->has_vnet_hdr) { |
1f55ac45 VM |
471 | return false; |
472 | } | |
473 | ||
d6085e3a | 474 | return nc->info->has_vnet_hdr(nc); |
1f55ac45 VM |
475 | } |
476 | ||
d6085e3a | 477 | bool qemu_has_vnet_hdr_len(NetClientState *nc, int len) |
1f55ac45 | 478 | { |
d6085e3a | 479 | if (!nc || !nc->info->has_vnet_hdr_len) { |
1f55ac45 VM |
480 | return false; |
481 | } | |
482 | ||
d6085e3a | 483 | return nc->info->has_vnet_hdr_len(nc, len); |
1f55ac45 VM |
484 | } |
485 | ||
d6085e3a | 486 | void qemu_using_vnet_hdr(NetClientState *nc, bool enable) |
1f55ac45 | 487 | { |
d6085e3a | 488 | if (!nc || !nc->info->using_vnet_hdr) { |
1f55ac45 VM |
489 | return; |
490 | } | |
491 | ||
d6085e3a | 492 | nc->info->using_vnet_hdr(nc, enable); |
1f55ac45 VM |
493 | } |
494 | ||
d6085e3a | 495 | void qemu_set_offload(NetClientState *nc, int csum, int tso4, int tso6, |
1f55ac45 VM |
496 | int ecn, int ufo) |
497 | { | |
d6085e3a | 498 | if (!nc || !nc->info->set_offload) { |
1f55ac45 VM |
499 | return; |
500 | } | |
501 | ||
d6085e3a | 502 | nc->info->set_offload(nc, csum, tso4, tso6, ecn, ufo); |
1f55ac45 VM |
503 | } |
504 | ||
d6085e3a | 505 | void qemu_set_vnet_hdr_len(NetClientState *nc, int len) |
1f55ac45 | 506 | { |
d6085e3a | 507 | if (!nc || !nc->info->set_vnet_hdr_len) { |
1f55ac45 VM |
508 | return; |
509 | } | |
510 | ||
d6085e3a | 511 | nc->info->set_vnet_hdr_len(nc, len); |
1f55ac45 VM |
512 | } |
513 | ||
c80cd6bb GK |
514 | int qemu_set_vnet_le(NetClientState *nc, bool is_le) |
515 | { | |
516 | if (!nc || !nc->info->set_vnet_le) { | |
517 | return -ENOSYS; | |
518 | } | |
519 | ||
520 | return nc->info->set_vnet_le(nc, is_le); | |
521 | } | |
522 | ||
523 | int qemu_set_vnet_be(NetClientState *nc, bool is_be) | |
524 | { | |
525 | if (!nc || !nc->info->set_vnet_be) { | |
526 | return -ENOSYS; | |
527 | } | |
528 | ||
529 | return nc->info->set_vnet_be(nc, is_be); | |
530 | } | |
531 | ||
4e68f7a0 | 532 | int qemu_can_send_packet(NetClientState *sender) |
63a01ef8 | 533 | { |
e1d64c08 HZ |
534 | int vm_running = runstate_is_running(); |
535 | ||
536 | if (!vm_running) { | |
537 | return 0; | |
538 | } | |
539 | ||
a005d073 | 540 | if (!sender->peer) { |
d80b9fc6 MM |
541 | return 1; |
542 | } | |
543 | ||
a005d073 SH |
544 | if (sender->peer->receive_disabled) { |
545 | return 0; | |
546 | } else if (sender->peer->info->can_receive && | |
547 | !sender->peer->info->can_receive(sender->peer)) { | |
548 | return 0; | |
63a01ef8 | 549 | } |
60c07d93 | 550 | return 1; |
63a01ef8 AL |
551 | } |
552 | ||
86a77c38 ZYW |
553 | ssize_t qemu_deliver_packet(NetClientState *sender, |
554 | unsigned flags, | |
555 | const uint8_t *data, | |
556 | size_t size, | |
557 | void *opaque) | |
9a6ecb30 | 558 | { |
35277d14 | 559 | NetClientState *nc = opaque; |
893379ef | 560 | ssize_t ret; |
9a6ecb30 | 561 | |
35277d14 | 562 | if (nc->link_down) { |
9a6ecb30 MM |
563 | return size; |
564 | } | |
565 | ||
35277d14 | 566 | if (nc->receive_disabled) { |
893379ef MM |
567 | return 0; |
568 | } | |
569 | ||
35277d14 SH |
570 | if (flags & QEMU_NET_PACKET_FLAG_RAW && nc->info->receive_raw) { |
571 | ret = nc->info->receive_raw(nc, data, size); | |
893379ef | 572 | } else { |
35277d14 | 573 | ret = nc->info->receive(nc, data, size); |
893379ef MM |
574 | } |
575 | ||
576 | if (ret == 0) { | |
35277d14 | 577 | nc->receive_disabled = 1; |
b9259652 | 578 | } |
893379ef MM |
579 | |
580 | return ret; | |
9a6ecb30 MM |
581 | } |
582 | ||
35277d14 | 583 | void qemu_purge_queued_packets(NetClientState *nc) |
8cad5516 | 584 | { |
35277d14 | 585 | if (!nc->peer) { |
d80b9fc6 | 586 | return; |
9a6ecb30 | 587 | } |
d80b9fc6 | 588 | |
067404be | 589 | qemu_net_queue_purge(nc->peer->incoming_queue, nc); |
8cad5516 MM |
590 | } |
591 | ||
ca77d85e MT |
592 | static |
593 | void qemu_flush_or_purge_queued_packets(NetClientState *nc, bool purge) | |
e94667b9 | 594 | { |
35277d14 | 595 | nc->receive_disabled = 0; |
9a6ecb30 | 596 | |
199ee608 LR |
597 | if (nc->peer && nc->peer->info->type == NET_CLIENT_OPTIONS_KIND_HUBPORT) { |
598 | if (net_hub_flush(nc->peer)) { | |
599 | qemu_notify_event(); | |
600 | } | |
199ee608 | 601 | } |
067404be | 602 | if (qemu_net_queue_flush(nc->incoming_queue)) { |
987a9b48 PB |
603 | /* We emptied the queue successfully, signal to the IO thread to repoll |
604 | * the file descriptor (for tap, for example). | |
605 | */ | |
606 | qemu_notify_event(); | |
ca77d85e MT |
607 | } else if (purge) { |
608 | /* Unable to empty the queue, purge remaining packets */ | |
609 | qemu_net_queue_purge(nc->incoming_queue, nc); | |
987a9b48 | 610 | } |
e94667b9 MM |
611 | } |
612 | ||
ca77d85e MT |
613 | void qemu_flush_queued_packets(NetClientState *nc) |
614 | { | |
615 | qemu_flush_or_purge_queued_packets(nc, false); | |
616 | } | |
617 | ||
4e68f7a0 | 618 | static ssize_t qemu_send_packet_async_with_flags(NetClientState *sender, |
ca77d175 MM |
619 | unsigned flags, |
620 | const uint8_t *buf, int size, | |
621 | NetPacketSent *sent_cb) | |
764a4d1d | 622 | { |
9a6ecb30 | 623 | NetQueue *queue; |
436e5e53 | 624 | |
63a01ef8 | 625 | #ifdef DEBUG_NET |
d80b9fc6 | 626 | printf("qemu_send_packet_async:\n"); |
63a01ef8 AL |
627 | hex_dump(stdout, buf, size); |
628 | #endif | |
f3b6c7fc | 629 | |
a005d073 | 630 | if (sender->link_down || !sender->peer) { |
9a6ecb30 MM |
631 | return size; |
632 | } | |
633 | ||
067404be | 634 | queue = sender->peer->incoming_queue; |
9a6ecb30 | 635 | |
ca77d175 MM |
636 | return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb); |
637 | } | |
638 | ||
4e68f7a0 | 639 | ssize_t qemu_send_packet_async(NetClientState *sender, |
ca77d175 MM |
640 | const uint8_t *buf, int size, |
641 | NetPacketSent *sent_cb) | |
642 | { | |
643 | return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE, | |
644 | buf, size, sent_cb); | |
f3b6c7fc MM |
645 | } |
646 | ||
35277d14 | 647 | void qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size) |
f3b6c7fc | 648 | { |
35277d14 | 649 | qemu_send_packet_async(nc, buf, size, NULL); |
63a01ef8 AL |
650 | } |
651 | ||
35277d14 | 652 | ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size) |
ca77d175 | 653 | { |
35277d14 | 654 | return qemu_send_packet_async_with_flags(nc, QEMU_NET_PACKET_FLAG_RAW, |
ca77d175 MM |
655 | buf, size, NULL); |
656 | } | |
657 | ||
35277d14 | 658 | static ssize_t nc_sendv_compat(NetClientState *nc, const struct iovec *iov, |
fbe78f4f AL |
659 | int iovcnt) |
660 | { | |
d32fcad3 | 661 | uint8_t buffer[NET_BUFSIZE]; |
ce053661 | 662 | size_t offset; |
fbe78f4f | 663 | |
dcf6f5e1 | 664 | offset = iov_to_buf(iov, iovcnt, 0, buffer, sizeof(buffer)); |
fbe78f4f | 665 | |
35277d14 | 666 | return nc->info->receive(nc, buffer, offset); |
fbe78f4f AL |
667 | } |
668 | ||
86a77c38 ZYW |
669 | ssize_t qemu_deliver_packet_iov(NetClientState *sender, |
670 | unsigned flags, | |
671 | const struct iovec *iov, | |
672 | int iovcnt, | |
673 | void *opaque) | |
9a6ecb30 | 674 | { |
35277d14 | 675 | NetClientState *nc = opaque; |
c67f5dc1 | 676 | int ret; |
9a6ecb30 | 677 | |
35277d14 | 678 | if (nc->link_down) { |
ce053661 | 679 | return iov_size(iov, iovcnt); |
9a6ecb30 MM |
680 | } |
681 | ||
c67f5dc1 SH |
682 | if (nc->receive_disabled) { |
683 | return 0; | |
684 | } | |
685 | ||
35277d14 | 686 | if (nc->info->receive_iov) { |
c67f5dc1 | 687 | ret = nc->info->receive_iov(nc, iov, iovcnt); |
9a6ecb30 | 688 | } else { |
c67f5dc1 SH |
689 | ret = nc_sendv_compat(nc, iov, iovcnt); |
690 | } | |
691 | ||
692 | if (ret == 0) { | |
693 | nc->receive_disabled = 1; | |
e94667b9 | 694 | } |
c67f5dc1 SH |
695 | |
696 | return ret; | |
e94667b9 MM |
697 | } |
698 | ||
4e68f7a0 | 699 | ssize_t qemu_sendv_packet_async(NetClientState *sender, |
f3b6c7fc MM |
700 | const struct iovec *iov, int iovcnt, |
701 | NetPacketSent *sent_cb) | |
e94667b9 | 702 | { |
9a6ecb30 MM |
703 | NetQueue *queue; |
704 | ||
a005d073 | 705 | if (sender->link_down || !sender->peer) { |
ce053661 | 706 | return iov_size(iov, iovcnt); |
e94667b9 MM |
707 | } |
708 | ||
067404be | 709 | queue = sender->peer->incoming_queue; |
9a6ecb30 | 710 | |
c0b8e49c MM |
711 | return qemu_net_queue_send_iov(queue, sender, |
712 | QEMU_NET_PACKET_FLAG_NONE, | |
713 | iov, iovcnt, sent_cb); | |
fbe78f4f AL |
714 | } |
715 | ||
f3b6c7fc | 716 | ssize_t |
35277d14 | 717 | qemu_sendv_packet(NetClientState *nc, const struct iovec *iov, int iovcnt) |
f3b6c7fc | 718 | { |
35277d14 | 719 | return qemu_sendv_packet_async(nc, iov, iovcnt, NULL); |
63a01ef8 AL |
720 | } |
721 | ||
4e68f7a0 | 722 | NetClientState *qemu_find_netdev(const char *id) |
5869c4d5 | 723 | { |
35277d14 | 724 | NetClientState *nc; |
5869c4d5 | 725 | |
35277d14 SH |
726 | QTAILQ_FOREACH(nc, &net_clients, next) { |
727 | if (nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC) | |
85dde9a9 | 728 | continue; |
35277d14 SH |
729 | if (!strcmp(nc->name, id)) { |
730 | return nc; | |
5869c4d5 MM |
731 | } |
732 | } | |
733 | ||
734 | return NULL; | |
735 | } | |
736 | ||
6c51ae73 JW |
737 | int qemu_find_net_clients_except(const char *id, NetClientState **ncs, |
738 | NetClientOptionsKind type, int max) | |
739 | { | |
740 | NetClientState *nc; | |
741 | int ret = 0; | |
742 | ||
743 | QTAILQ_FOREACH(nc, &net_clients, next) { | |
744 | if (nc->info->type == type) { | |
745 | continue; | |
746 | } | |
40d19394 | 747 | if (!id || !strcmp(nc->name, id)) { |
6c51ae73 JW |
748 | if (ret < max) { |
749 | ncs[ret] = nc; | |
750 | } | |
751 | ret++; | |
752 | } | |
753 | } | |
754 | ||
755 | return ret; | |
756 | } | |
757 | ||
7697079b AL |
758 | static int nic_get_free_idx(void) |
759 | { | |
760 | int index; | |
761 | ||
762 | for (index = 0; index < MAX_NICS; index++) | |
763 | if (!nd_table[index].used) | |
764 | return index; | |
765 | return -1; | |
766 | } | |
767 | ||
07caea31 MA |
768 | int qemu_show_nic_models(const char *arg, const char *const *models) |
769 | { | |
770 | int i; | |
771 | ||
c8057f95 | 772 | if (!arg || !is_help_option(arg)) { |
07caea31 | 773 | return 0; |
c8057f95 | 774 | } |
07caea31 MA |
775 | |
776 | fprintf(stderr, "qemu: Supported NIC models: "); | |
777 | for (i = 0 ; models[i]; i++) | |
778 | fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n'); | |
779 | return 1; | |
780 | } | |
781 | ||
d07f22c5 AL |
782 | void qemu_check_nic_model(NICInfo *nd, const char *model) |
783 | { | |
784 | const char *models[2]; | |
785 | ||
786 | models[0] = model; | |
787 | models[1] = NULL; | |
788 | ||
07caea31 MA |
789 | if (qemu_show_nic_models(nd->model, models)) |
790 | exit(0); | |
791 | if (qemu_find_nic_model(nd, models, model) < 0) | |
792 | exit(1); | |
d07f22c5 AL |
793 | } |
794 | ||
07caea31 MA |
795 | int qemu_find_nic_model(NICInfo *nd, const char * const *models, |
796 | const char *default_model) | |
d07f22c5 | 797 | { |
07caea31 | 798 | int i; |
d07f22c5 AL |
799 | |
800 | if (!nd->model) | |
7267c094 | 801 | nd->model = g_strdup(default_model); |
d07f22c5 | 802 | |
07caea31 MA |
803 | for (i = 0 ; models[i]; i++) { |
804 | if (strcmp(nd->model, models[i]) == 0) | |
805 | return i; | |
d07f22c5 AL |
806 | } |
807 | ||
6daf194d | 808 | error_report("Unsupported NIC model: %s", nd->model); |
07caea31 | 809 | return -1; |
d07f22c5 AL |
810 | } |
811 | ||
1a0c0958 | 812 | static int net_init_nic(const NetClientOptions *opts, const char *name, |
a30ecde6 | 813 | NetClientState *peer, Error **errp) |
f83c6e10 MM |
814 | { |
815 | int idx; | |
816 | NICInfo *nd; | |
2456f36f LE |
817 | const NetLegacyNicOptions *nic; |
818 | ||
819 | assert(opts->kind == NET_CLIENT_OPTIONS_KIND_NIC); | |
820 | nic = opts->nic; | |
f83c6e10 MM |
821 | |
822 | idx = nic_get_free_idx(); | |
823 | if (idx == -1 || nb_nics >= MAX_NICS) { | |
66308868 | 824 | error_setg(errp, "too many NICs"); |
f83c6e10 MM |
825 | return -1; |
826 | } | |
827 | ||
828 | nd = &nd_table[idx]; | |
829 | ||
830 | memset(nd, 0, sizeof(*nd)); | |
831 | ||
2456f36f LE |
832 | if (nic->has_netdev) { |
833 | nd->netdev = qemu_find_netdev(nic->netdev); | |
5869c4d5 | 834 | if (!nd->netdev) { |
66308868 | 835 | error_setg(errp, "netdev '%s' not found", nic->netdev); |
5869c4d5 MM |
836 | return -1; |
837 | } | |
838 | } else { | |
d33d93b2 SH |
839 | assert(peer); |
840 | nd->netdev = peer; | |
5869c4d5 | 841 | } |
c64f50d1 | 842 | nd->name = g_strdup(name); |
2456f36f LE |
843 | if (nic->has_model) { |
844 | nd->model = g_strdup(nic->model); | |
f83c6e10 | 845 | } |
2456f36f LE |
846 | if (nic->has_addr) { |
847 | nd->devaddr = g_strdup(nic->addr); | |
f83c6e10 MM |
848 | } |
849 | ||
2456f36f LE |
850 | if (nic->has_macaddr && |
851 | net_parse_macaddr(nd->macaddr.a, nic->macaddr) < 0) { | |
66308868 | 852 | error_setg(errp, "invalid syntax for ethernet address"); |
f83c6e10 MM |
853 | return -1; |
854 | } | |
d60b20cf DK |
855 | if (nic->has_macaddr && |
856 | is_multicast_ether_addr(nd->macaddr.a)) { | |
66308868 MA |
857 | error_setg(errp, |
858 | "NIC cannot have multicast MAC address (odd 1st byte)"); | |
d60b20cf DK |
859 | return -1; |
860 | } | |
6eed1856 | 861 | qemu_macaddr_default_if_unset(&nd->macaddr); |
f83c6e10 | 862 | |
2456f36f LE |
863 | if (nic->has_vectors) { |
864 | if (nic->vectors > 0x7ffffff) { | |
66308868 | 865 | error_setg(errp, "invalid # of vectors: %"PRIu32, nic->vectors); |
2456f36f LE |
866 | return -1; |
867 | } | |
868 | nd->nvectors = nic->vectors; | |
869 | } else { | |
870 | nd->nvectors = DEV_NVECTORS_UNSPECIFIED; | |
f83c6e10 MM |
871 | } |
872 | ||
873 | nd->used = 1; | |
f83c6e10 MM |
874 | nb_nics++; |
875 | ||
876 | return idx; | |
877 | } | |
878 | ||
6687b79d LE |
879 | |
880 | static int (* const net_client_init_fun[NET_CLIENT_OPTIONS_KIND_MAX])( | |
1a0c0958 | 881 | const NetClientOptions *opts, |
6687b79d | 882 | const char *name, |
a30ecde6 | 883 | NetClientState *peer, Error **errp) = { |
f6c874e3 | 884 | [NET_CLIENT_OPTIONS_KIND_NIC] = net_init_nic, |
ec302ffd | 885 | #ifdef CONFIG_SLIRP |
f6c874e3 | 886 | [NET_CLIENT_OPTIONS_KIND_USER] = net_init_slirp, |
2944e4ec | 887 | #endif |
f6c874e3 SH |
888 | [NET_CLIENT_OPTIONS_KIND_TAP] = net_init_tap, |
889 | [NET_CLIENT_OPTIONS_KIND_SOCKET] = net_init_socket, | |
dd51058d | 890 | #ifdef CONFIG_VDE |
f6c874e3 | 891 | [NET_CLIENT_OPTIONS_KIND_VDE] = net_init_vde, |
58952137 VM |
892 | #endif |
893 | #ifdef CONFIG_NETMAP | |
894 | [NET_CLIENT_OPTIONS_KIND_NETMAP] = net_init_netmap, | |
dd51058d | 895 | #endif |
f6c874e3 | 896 | [NET_CLIENT_OPTIONS_KIND_DUMP] = net_init_dump, |
2944e4ec | 897 | #ifdef CONFIG_NET_BRIDGE |
f6c874e3 | 898 | [NET_CLIENT_OPTIONS_KIND_BRIDGE] = net_init_bridge, |
6687b79d | 899 | #endif |
f6c874e3 | 900 | [NET_CLIENT_OPTIONS_KIND_HUBPORT] = net_init_hubport, |
03ce5744 NN |
901 | #ifdef CONFIG_VHOST_NET_USED |
902 | [NET_CLIENT_OPTIONS_KIND_VHOST_USER] = net_init_vhost_user, | |
903 | #endif | |
015a33bd | 904 | #ifdef CONFIG_L2TPV3 |
3fb69aa1 AI |
905 | [NET_CLIENT_OPTIONS_KIND_L2TPV3] = net_init_l2tpv3, |
906 | #endif | |
f83c6e10 MM |
907 | }; |
908 | ||
6687b79d | 909 | |
1a0c0958 | 910 | static int net_client_init1(const void *object, int is_netdev, Error **errp) |
f83c6e10 | 911 | { |
6687b79d LE |
912 | union { |
913 | const Netdev *netdev; | |
914 | const NetLegacy *net; | |
915 | } u; | |
916 | const NetClientOptions *opts; | |
6d952ebe | 917 | const char *name; |
f83c6e10 | 918 | |
5294e2c7 | 919 | if (is_netdev) { |
6687b79d LE |
920 | u.netdev = object; |
921 | opts = u.netdev->opts; | |
922 | name = u.netdev->id; | |
923 | ||
924 | switch (opts->kind) { | |
f6b134ac | 925 | #ifdef CONFIG_SLIRP |
6687b79d | 926 | case NET_CLIENT_OPTIONS_KIND_USER: |
f6b134ac | 927 | #endif |
6687b79d LE |
928 | case NET_CLIENT_OPTIONS_KIND_TAP: |
929 | case NET_CLIENT_OPTIONS_KIND_SOCKET: | |
f6b134ac | 930 | #ifdef CONFIG_VDE |
6687b79d LE |
931 | case NET_CLIENT_OPTIONS_KIND_VDE: |
932 | #endif | |
58952137 VM |
933 | #ifdef CONFIG_NETMAP |
934 | case NET_CLIENT_OPTIONS_KIND_NETMAP: | |
935 | #endif | |
6687b79d LE |
936 | #ifdef CONFIG_NET_BRIDGE |
937 | case NET_CLIENT_OPTIONS_KIND_BRIDGE: | |
f6b134ac | 938 | #endif |
f6c874e3 | 939 | case NET_CLIENT_OPTIONS_KIND_HUBPORT: |
03ce5744 NN |
940 | #ifdef CONFIG_VHOST_NET_USED |
941 | case NET_CLIENT_OPTIONS_KIND_VHOST_USER: | |
3fb69aa1 | 942 | #endif |
015a33bd | 943 | #ifdef CONFIG_L2TPV3 |
3fb69aa1 | 944 | case NET_CLIENT_OPTIONS_KIND_L2TPV3: |
03ce5744 | 945 | #endif |
6687b79d LE |
946 | break; |
947 | ||
948 | default: | |
c6bd8c70 MA |
949 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "type", |
950 | "a netdev backend type"); | |
f6b134ac MM |
951 | return -1; |
952 | } | |
6687b79d LE |
953 | } else { |
954 | u.net = object; | |
955 | opts = u.net->opts; | |
ca7eb184 | 956 | if (opts->kind == NET_CLIENT_OPTIONS_KIND_HUBPORT) { |
c6bd8c70 MA |
957 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "type", |
958 | "a net type"); | |
ca7eb184 MA |
959 | return -1; |
960 | } | |
6687b79d LE |
961 | /* missing optional values have been initialized to "all bits zero" */ |
962 | name = u.net->has_id ? u.net->id : u.net->name; | |
963 | } | |
f6b134ac | 964 | |
6687b79d | 965 | if (net_client_init_fun[opts->kind]) { |
4e68f7a0 | 966 | NetClientState *peer = NULL; |
6687b79d LE |
967 | |
968 | /* Do not add to a vlan if it's a -netdev or a nic with a netdev= | |
969 | * parameter. */ | |
970 | if (!is_netdev && | |
971 | (opts->kind != NET_CLIENT_OPTIONS_KIND_NIC || | |
972 | !opts->nic->has_netdev)) { | |
d33d93b2 | 973 | peer = net_hub_add_port(u.net->has_vlan ? u.net->vlan : 0, NULL); |
f6b134ac | 974 | } |
6687b79d | 975 | |
a30ecde6 MA |
976 | if (net_client_init_fun[opts->kind](opts, name, peer, errp) < 0) { |
977 | /* FIXME drop when all init functions store an Error */ | |
978 | if (errp && !*errp) { | |
c6bd8c70 MA |
979 | error_setg(errp, QERR_DEVICE_INIT_FAILED, |
980 | NetClientOptionsKind_lookup[opts->kind]); | |
a30ecde6 | 981 | } |
f6b134ac MM |
982 | return -1; |
983 | } | |
984 | } | |
6687b79d LE |
985 | return 0; |
986 | } | |
987 | ||
f6b134ac | 988 | |
6687b79d LE |
989 | static void net_visit(Visitor *v, int is_netdev, void **object, Error **errp) |
990 | { | |
991 | if (is_netdev) { | |
992 | visit_type_Netdev(v, (Netdev **)object, NULL, errp); | |
993 | } else { | |
994 | visit_type_NetLegacy(v, (NetLegacy **)object, NULL, errp); | |
6d952ebe | 995 | } |
6687b79d | 996 | } |
6d952ebe | 997 | |
f6b134ac | 998 | |
6687b79d LE |
999 | int net_client_init(QemuOpts *opts, int is_netdev, Error **errp) |
1000 | { | |
1001 | void *object = NULL; | |
1002 | Error *err = NULL; | |
1003 | int ret = -1; | |
f83c6e10 | 1004 | |
6687b79d LE |
1005 | { |
1006 | OptsVisitor *ov = opts_visitor_new(opts); | |
f6b134ac | 1007 | |
6687b79d LE |
1008 | net_visit(opts_get_visitor(ov), is_netdev, &object, &err); |
1009 | opts_visitor_cleanup(ov); | |
f83c6e10 MM |
1010 | } |
1011 | ||
6687b79d | 1012 | if (!err) { |
1a0c0958 | 1013 | ret = net_client_init1(object, is_netdev, &err); |
6687b79d LE |
1014 | } |
1015 | ||
1016 | if (object) { | |
1017 | QapiDeallocVisitor *dv = qapi_dealloc_visitor_new(); | |
1018 | ||
1019 | net_visit(qapi_dealloc_get_visitor(dv), is_netdev, &object, NULL); | |
1020 | qapi_dealloc_visitor_cleanup(dv); | |
1021 | } | |
1022 | ||
1023 | error_propagate(errp, err); | |
1024 | return ret; | |
f83c6e10 MM |
1025 | } |
1026 | ||
6687b79d | 1027 | |
6f338c34 AL |
1028 | static int net_host_check_device(const char *device) |
1029 | { | |
1030 | int i; | |
84007e81 HB |
1031 | for (i = 0; host_net_devices[i]; i++) { |
1032 | if (!strncmp(host_net_devices[i], device, | |
1033 | strlen(host_net_devices[i]))) { | |
6f338c34 | 1034 | return 1; |
84007e81 | 1035 | } |
6f338c34 AL |
1036 | } |
1037 | ||
1038 | return 0; | |
1039 | } | |
1040 | ||
3e5a50d6 | 1041 | void hmp_host_net_add(Monitor *mon, const QDict *qdict) |
6f338c34 | 1042 | { |
f18c16de | 1043 | const char *device = qdict_get_str(qdict, "device"); |
7f1c9d20 | 1044 | const char *opts_str = qdict_get_try_str(qdict, "opts"); |
4559a1db | 1045 | Error *local_err = NULL; |
7f1c9d20 | 1046 | QemuOpts *opts; |
f18c16de | 1047 | |
6f338c34 | 1048 | if (!net_host_check_device(device)) { |
376253ec | 1049 | monitor_printf(mon, "invalid host network device %s\n", device); |
6f338c34 AL |
1050 | return; |
1051 | } | |
7f1c9d20 | 1052 | |
70b94331 MA |
1053 | opts = qemu_opts_parse_noisily(qemu_find_opts("net"), |
1054 | opts_str ? opts_str : "", false); | |
7f1c9d20 | 1055 | if (!opts) { |
7f1c9d20 MM |
1056 | return; |
1057 | } | |
1058 | ||
f43e47db | 1059 | qemu_opt_set(opts, "type", device, &error_abort); |
7f1c9d20 | 1060 | |
4559a1db | 1061 | net_client_init(opts, 0, &local_err); |
84d18f06 | 1062 | if (local_err) { |
12d0cc2d | 1063 | error_report_err(local_err); |
5c8be678 AL |
1064 | monitor_printf(mon, "adding host network device %s failed\n", device); |
1065 | } | |
6f338c34 AL |
1066 | } |
1067 | ||
3e5a50d6 | 1068 | void hmp_host_net_remove(Monitor *mon, const QDict *qdict) |
6f338c34 | 1069 | { |
35277d14 | 1070 | NetClientState *nc; |
f18c16de LC |
1071 | int vlan_id = qdict_get_int(qdict, "vlan_id"); |
1072 | const char *device = qdict_get_str(qdict, "device"); | |
6f338c34 | 1073 | |
35277d14 SH |
1074 | nc = net_hub_find_client_by_name(vlan_id, device); |
1075 | if (!nc) { | |
86e11772 HB |
1076 | error_report("Host network device '%s' on hub '%d' not found", |
1077 | device, vlan_id); | |
6f338c34 AL |
1078 | return; |
1079 | } | |
7fb43911 | 1080 | if (nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC) { |
86e11772 | 1081 | error_report("invalid host network device '%s'", device); |
e8f1f9db AL |
1082 | return; |
1083 | } | |
64a55d60 JW |
1084 | |
1085 | qemu_del_net_client(nc->peer); | |
b20c6b9e | 1086 | qemu_del_net_client(nc); |
6f338c34 AL |
1087 | } |
1088 | ||
928059a3 LC |
1089 | void netdev_add(QemuOpts *opts, Error **errp) |
1090 | { | |
1091 | net_client_init(opts, 1, errp); | |
1092 | } | |
1093 | ||
485febc6 | 1094 | void qmp_netdev_add(QDict *qdict, QObject **ret, Error **errp) |
ae82d324 | 1095 | { |
4e89978e | 1096 | Error *local_err = NULL; |
928059a3 | 1097 | QemuOptsList *opts_list; |
ae82d324 | 1098 | QemuOpts *opts; |
ae82d324 | 1099 | |
928059a3 | 1100 | opts_list = qemu_find_opts_err("netdev", &local_err); |
84d18f06 | 1101 | if (local_err) { |
485febc6 | 1102 | goto out; |
ae82d324 MA |
1103 | } |
1104 | ||
928059a3 | 1105 | opts = qemu_opts_from_qdict(opts_list, qdict, &local_err); |
84d18f06 | 1106 | if (local_err) { |
485febc6 | 1107 | goto out; |
928059a3 LC |
1108 | } |
1109 | ||
1110 | netdev_add(opts, &local_err); | |
84d18f06 | 1111 | if (local_err) { |
410cbafe | 1112 | qemu_opts_del(opts); |
485febc6 | 1113 | goto out; |
410cbafe YT |
1114 | } |
1115 | ||
485febc6 MA |
1116 | out: |
1117 | error_propagate(errp, local_err); | |
ae82d324 MA |
1118 | } |
1119 | ||
5f964155 | 1120 | void qmp_netdev_del(const char *id, Error **errp) |
ae82d324 | 1121 | { |
35277d14 | 1122 | NetClientState *nc; |
645c9496 | 1123 | QemuOpts *opts; |
ae82d324 | 1124 | |
35277d14 SH |
1125 | nc = qemu_find_netdev(id); |
1126 | if (!nc) { | |
75158ebb MA |
1127 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
1128 | "Device '%s' not found", id); | |
5f964155 | 1129 | return; |
ae82d324 | 1130 | } |
5f964155 | 1131 | |
645c9496 SH |
1132 | opts = qemu_opts_find(qemu_find_opts_err("netdev", NULL), id); |
1133 | if (!opts) { | |
1134 | error_setg(errp, "Device '%s' is not a netdev", id); | |
1135 | return; | |
1136 | } | |
1137 | ||
b20c6b9e | 1138 | qemu_del_net_client(nc); |
645c9496 | 1139 | qemu_opts_del(opts); |
ae82d324 MA |
1140 | } |
1141 | ||
1a859593 | 1142 | void print_net_client(Monitor *mon, NetClientState *nc) |
44e798d3 | 1143 | { |
1ceef9f2 JW |
1144 | monitor_printf(mon, "%s: index=%d,type=%s,%s\n", nc->name, |
1145 | nc->queue_index, | |
1146 | NetClientOptionsKind_lookup[nc->info->type], | |
1147 | nc->info_str); | |
44e798d3 JK |
1148 | } |
1149 | ||
b1be4280 AK |
1150 | RxFilterInfoList *qmp_query_rx_filter(bool has_name, const char *name, |
1151 | Error **errp) | |
1152 | { | |
1153 | NetClientState *nc; | |
1154 | RxFilterInfoList *filter_list = NULL, *last_entry = NULL; | |
1155 | ||
1156 | QTAILQ_FOREACH(nc, &net_clients, next) { | |
1157 | RxFilterInfoList *entry; | |
1158 | RxFilterInfo *info; | |
1159 | ||
1160 | if (has_name && strcmp(nc->name, name) != 0) { | |
1161 | continue; | |
1162 | } | |
1163 | ||
1164 | /* only query rx-filter information of NIC */ | |
1165 | if (nc->info->type != NET_CLIENT_OPTIONS_KIND_NIC) { | |
1166 | if (has_name) { | |
1167 | error_setg(errp, "net client(%s) isn't a NIC", name); | |
9083da1d | 1168 | return NULL; |
b1be4280 AK |
1169 | } |
1170 | continue; | |
1171 | } | |
1172 | ||
1173 | if (nc->info->query_rx_filter) { | |
1174 | info = nc->info->query_rx_filter(nc); | |
1175 | entry = g_malloc0(sizeof(*entry)); | |
1176 | entry->value = info; | |
1177 | ||
1178 | if (!filter_list) { | |
1179 | filter_list = entry; | |
1180 | } else { | |
1181 | last_entry->next = entry; | |
1182 | } | |
1183 | last_entry = entry; | |
1184 | } else if (has_name) { | |
1185 | error_setg(errp, "net client(%s) doesn't support" | |
1186 | " rx-filter querying", name); | |
9083da1d | 1187 | return NULL; |
b1be4280 | 1188 | } |
638fb141 MA |
1189 | |
1190 | if (has_name) { | |
1191 | break; | |
1192 | } | |
b1be4280 AK |
1193 | } |
1194 | ||
9083da1d | 1195 | if (filter_list == NULL && has_name) { |
b1be4280 AK |
1196 | error_setg(errp, "invalid net client name: %s", name); |
1197 | } | |
1198 | ||
1199 | return filter_list; | |
1200 | } | |
1201 | ||
1ce6be24 | 1202 | void hmp_info_network(Monitor *mon, const QDict *qdict) |
63a01ef8 | 1203 | { |
35277d14 | 1204 | NetClientState *nc, *peer; |
2be64a68 | 1205 | NetClientOptionsKind type; |
63a01ef8 | 1206 | |
1a859593 ZYW |
1207 | net_hub_info(mon); |
1208 | ||
35277d14 SH |
1209 | QTAILQ_FOREACH(nc, &net_clients, next) { |
1210 | peer = nc->peer; | |
1211 | type = nc->info->type; | |
5610c3aa | 1212 | |
1a859593 ZYW |
1213 | /* Skip if already printed in hub info */ |
1214 | if (net_hub_id_for_client(nc, NULL) == 0) { | |
1215 | continue; | |
5610c3aa | 1216 | } |
1a859593 | 1217 | |
2be64a68 | 1218 | if (!peer || type == NET_CLIENT_OPTIONS_KIND_NIC) { |
35277d14 | 1219 | print_net_client(mon, nc); |
19061e63 | 1220 | } /* else it's a netdev connected to a NIC, printed with the NIC */ |
2be64a68 | 1221 | if (peer && type == NET_CLIENT_OPTIONS_KIND_NIC) { |
1a859593 | 1222 | monitor_printf(mon, " \\ "); |
44e798d3 | 1223 | print_net_client(mon, peer); |
a0104e0e | 1224 | } |
a0104e0e | 1225 | } |
63a01ef8 AL |
1226 | } |
1227 | ||
4b37156c | 1228 | void qmp_set_link(const char *name, bool up, Error **errp) |
436e5e53 | 1229 | { |
1ceef9f2 JW |
1230 | NetClientState *ncs[MAX_QUEUE_NUM]; |
1231 | NetClientState *nc; | |
1232 | int queues, i; | |
436e5e53 | 1233 | |
1ceef9f2 JW |
1234 | queues = qemu_find_net_clients_except(name, ncs, |
1235 | NET_CLIENT_OPTIONS_KIND_MAX, | |
1236 | MAX_QUEUE_NUM); | |
1237 | ||
1238 | if (queues == 0) { | |
75158ebb MA |
1239 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
1240 | "Device '%s' not found", name); | |
4b37156c | 1241 | return; |
436e5e53 | 1242 | } |
1ceef9f2 | 1243 | nc = ncs[0]; |
436e5e53 | 1244 | |
1ceef9f2 JW |
1245 | for (i = 0; i < queues; i++) { |
1246 | ncs[i]->link_down = !up; | |
1247 | } | |
436e5e53 | 1248 | |
35277d14 SH |
1249 | if (nc->info->link_status_changed) { |
1250 | nc->info->link_status_changed(nc); | |
665a3b07 | 1251 | } |
ab1cbe1c | 1252 | |
02d38fcb VY |
1253 | if (nc->peer) { |
1254 | /* Change peer link only if the peer is NIC and then notify peer. | |
1255 | * If the peer is a HUBPORT or a backend, we do not change the | |
1256 | * link status. | |
1257 | * | |
1258 | * This behavior is compatible with qemu vlans where there could be | |
1259 | * multiple clients that can still communicate with each other in | |
1260 | * disconnected mode. For now maintain this compatibility. | |
1261 | */ | |
1262 | if (nc->peer->info->type == NET_CLIENT_OPTIONS_KIND_NIC) { | |
1263 | for (i = 0; i < queues; i++) { | |
1264 | ncs[i]->peer->link_down = !up; | |
1265 | } | |
1266 | } | |
1267 | if (nc->peer->info->link_status_changed) { | |
1268 | nc->peer->info->link_status_changed(nc->peer); | |
1269 | } | |
ab1cbe1c | 1270 | } |
436e5e53 AL |
1271 | } |
1272 | ||
ca77d85e MT |
1273 | static void net_vm_change_state_handler(void *opaque, int running, |
1274 | RunState state) | |
1275 | { | |
1276 | /* Complete all queued packets, to guarantee we don't modify | |
1277 | * state later when VM is not running. | |
1278 | */ | |
1279 | if (!running) { | |
1280 | NetClientState *nc; | |
1281 | NetClientState *tmp; | |
1282 | ||
1283 | QTAILQ_FOREACH_SAFE(nc, &net_clients, next, tmp) { | |
1284 | qemu_flush_or_purge_queued_packets(nc, true); | |
1285 | } | |
1286 | } | |
1287 | } | |
1288 | ||
63a01ef8 AL |
1289 | void net_cleanup(void) |
1290 | { | |
1ceef9f2 | 1291 | NetClientState *nc; |
577c4af9 | 1292 | |
1ceef9f2 JW |
1293 | /* We may del multiple entries during qemu_del_net_client(), |
1294 | * so QTAILQ_FOREACH_SAFE() is also not safe here. | |
1295 | */ | |
1296 | while (!QTAILQ_EMPTY(&net_clients)) { | |
1297 | nc = QTAILQ_FIRST(&net_clients); | |
948ecf21 JW |
1298 | if (nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC) { |
1299 | qemu_del_nic(qemu_get_nic(nc)); | |
1300 | } else { | |
1301 | qemu_del_net_client(nc); | |
1302 | } | |
577c4af9 | 1303 | } |
ca77d85e MT |
1304 | |
1305 | qemu_del_vm_change_state_handler(net_change_state_entry); | |
63a01ef8 AL |
1306 | } |
1307 | ||
668680f7 | 1308 | void net_check_clients(void) |
63a01ef8 | 1309 | { |
35277d14 | 1310 | NetClientState *nc; |
48e2faf2 | 1311 | int i; |
63a01ef8 | 1312 | |
641f6eae PM |
1313 | /* Don't warn about the default network setup that you get if |
1314 | * no command line -net or -netdev options are specified. There | |
1315 | * are two cases that we would otherwise complain about: | |
1316 | * (1) board doesn't support a NIC but the implicit "-net nic" | |
1317 | * requested one | |
1318 | * (2) CONFIG_SLIRP not set, in which case the implicit "-net nic" | |
1319 | * sets up a nic that isn't connected to anything. | |
1320 | */ | |
1321 | if (default_net) { | |
1322 | return; | |
1323 | } | |
1324 | ||
81017645 | 1325 | net_hub_check_clients(); |
ac60cc18 | 1326 | |
35277d14 SH |
1327 | QTAILQ_FOREACH(nc, &net_clients, next) { |
1328 | if (!nc->peer) { | |
efe32fdd | 1329 | fprintf(stderr, "Warning: %s %s has no peer\n", |
35277d14 SH |
1330 | nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC ? |
1331 | "nic" : "netdev", nc->name); | |
efe32fdd MA |
1332 | } |
1333 | } | |
48e2faf2 PM |
1334 | |
1335 | /* Check that all NICs requested via -net nic actually got created. | |
1336 | * NICs created via -device don't need to be checked here because | |
1337 | * they are always instantiated. | |
1338 | */ | |
1339 | for (i = 0; i < MAX_NICS; i++) { | |
1340 | NICInfo *nd = &nd_table[i]; | |
1341 | if (nd->used && !nd->instantiated) { | |
1342 | fprintf(stderr, "Warning: requested NIC (%s, model %s) " | |
1343 | "was not created (not supported by this machine?)\n", | |
1344 | nd->name ? nd->name : "anonymous", | |
1345 | nd->model ? nd->model : "unspecified"); | |
1346 | } | |
1347 | } | |
63a01ef8 | 1348 | } |
dc1c9fe8 | 1349 | |
28d0de7a | 1350 | static int net_init_client(void *dummy, QemuOpts *opts, Error **errp) |
dc1c9fe8 | 1351 | { |
4559a1db LC |
1352 | Error *local_err = NULL; |
1353 | ||
1354 | net_client_init(opts, 0, &local_err); | |
84d18f06 | 1355 | if (local_err) { |
12d0cc2d | 1356 | error_report_err(local_err); |
c1671a08 | 1357 | return -1; |
4559a1db LC |
1358 | } |
1359 | ||
c1671a08 | 1360 | return 0; |
f6b134ac MM |
1361 | } |
1362 | ||
28d0de7a | 1363 | static int net_init_netdev(void *dummy, QemuOpts *opts, Error **errp) |
f6b134ac | 1364 | { |
4559a1db LC |
1365 | Error *local_err = NULL; |
1366 | int ret; | |
1367 | ||
1368 | ret = net_client_init(opts, 1, &local_err); | |
84d18f06 | 1369 | if (local_err) { |
12d0cc2d | 1370 | error_report_err(local_err); |
4559a1db LC |
1371 | return -1; |
1372 | } | |
1373 | ||
1374 | return ret; | |
dc1c9fe8 MM |
1375 | } |
1376 | ||
1377 | int net_init_clients(void) | |
1378 | { | |
3329f07b GH |
1379 | QemuOptsList *net = qemu_find_opts("net"); |
1380 | ||
cb4522cc | 1381 | if (default_net) { |
dc1c9fe8 | 1382 | /* if no clients, we use a default config */ |
79087c78 | 1383 | qemu_opts_set(net, NULL, "type", "nic", &error_abort); |
dc1c9fe8 | 1384 | #ifdef CONFIG_SLIRP |
79087c78 | 1385 | qemu_opts_set(net, NULL, "type", "user", &error_abort); |
dc1c9fe8 MM |
1386 | #endif |
1387 | } | |
1388 | ||
ca77d85e MT |
1389 | net_change_state_entry = |
1390 | qemu_add_vm_change_state_handler(net_vm_change_state_handler, NULL); | |
1391 | ||
94878994 | 1392 | QTAILQ_INIT(&net_clients); |
5610c3aa | 1393 | |
28d0de7a MA |
1394 | if (qemu_opts_foreach(qemu_find_opts("netdev"), |
1395 | net_init_netdev, NULL, NULL)) { | |
f6b134ac | 1396 | return -1; |
a4c7367f | 1397 | } |
f6b134ac | 1398 | |
28d0de7a | 1399 | if (qemu_opts_foreach(net, net_init_client, NULL, NULL)) { |
dc1c9fe8 MM |
1400 | return -1; |
1401 | } | |
1402 | ||
dc1c9fe8 MM |
1403 | return 0; |
1404 | } | |
1405 | ||
7f161aae | 1406 | int net_client_parse(QemuOptsList *opts_list, const char *optarg) |
dc1c9fe8 | 1407 | { |
a3a766e7 | 1408 | #if defined(CONFIG_SLIRP) |
68ac40d2 MM |
1409 | int ret; |
1410 | if (net_slirp_parse_legacy(opts_list, optarg, &ret)) { | |
dc1c9fe8 MM |
1411 | return ret; |
1412 | } | |
a3a766e7 | 1413 | #endif |
68ac40d2 | 1414 | |
70b94331 | 1415 | if (!qemu_opts_parse_noisily(opts_list, optarg, true)) { |
dc1c9fe8 MM |
1416 | return -1; |
1417 | } | |
1418 | ||
cb4522cc | 1419 | default_net = 0; |
dc1c9fe8 MM |
1420 | return 0; |
1421 | } | |
7fc8d918 JW |
1422 | |
1423 | /* From FreeBSD */ | |
1424 | /* XXX: optimize */ | |
1425 | unsigned compute_mcast_idx(const uint8_t *ep) | |
1426 | { | |
1427 | uint32_t crc; | |
1428 | int carry, i, j; | |
1429 | uint8_t b; | |
1430 | ||
1431 | crc = 0xffffffff; | |
1432 | for (i = 0; i < 6; i++) { | |
1433 | b = *ep++; | |
1434 | for (j = 0; j < 8; j++) { | |
1435 | carry = ((crc & 0x80000000L) ? 1 : 0) ^ (b & 0x01); | |
1436 | crc <<= 1; | |
1437 | b >>= 1; | |
1438 | if (carry) { | |
1439 | crc = ((crc ^ POLYNOMIAL) | carry); | |
1440 | } | |
1441 | } | |
1442 | } | |
1443 | return crc >> 26; | |
1444 | } | |
4d454574 PB |
1445 | |
1446 | QemuOptsList qemu_netdev_opts = { | |
1447 | .name = "netdev", | |
1448 | .implied_opt_name = "type", | |
1449 | .head = QTAILQ_HEAD_INITIALIZER(qemu_netdev_opts.head), | |
1450 | .desc = { | |
1451 | /* | |
1452 | * no elements => accept any params | |
1453 | * validation will happen later | |
1454 | */ | |
1455 | { /* end of list */ } | |
1456 | }, | |
1457 | }; | |
1458 | ||
1459 | QemuOptsList qemu_net_opts = { | |
1460 | .name = "net", | |
1461 | .implied_opt_name = "type", | |
1462 | .head = QTAILQ_HEAD_INITIALIZER(qemu_net_opts.head), | |
1463 | .desc = { | |
1464 | /* | |
1465 | * no elements => accept any params | |
1466 | * validation will happen later | |
1467 | */ | |
1468 | { /* end of list */ } | |
1469 | }, | |
1470 | }; |