]>
Commit | Line | Data |
---|---|---|
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" |
cc7a8ea7 | 35 | #include "qapi/qmp/qerror.h" |
d49b6836 | 36 | #include "qemu/error-report.h" |
1de7afc9 PB |
37 | #include "qemu/sockets.h" |
38 | #include "qemu/config-file.h" | |
4b37156c | 39 | #include "qmp-commands.h" |
75422b0d | 40 | #include "hw/qdev.h" |
1de7afc9 | 41 | #include "qemu/iov.h" |
6a1751b7 | 42 | #include "qemu/main-loop.h" |
6687b79d LE |
43 | #include "qapi-visit.h" |
44 | #include "qapi/opts-visitor.h" | |
7b1b5d19 | 45 | #include "qapi/dealloc-visitor.h" |
e1d64c08 | 46 | #include "sysemu/sysemu.h" |
511d2b14 | 47 | |
2944e4ec SW |
48 | /* Net bridge is currently not supported for W32. */ |
49 | #if !defined(_WIN32) | |
50 | # define CONFIG_NET_BRIDGE | |
51 | #endif | |
52 | ||
ca77d85e | 53 | static VMChangeStateEntry *net_change_state_entry; |
4e68f7a0 | 54 | static QTAILQ_HEAD(, NetClientState) net_clients; |
63a01ef8 | 55 | |
84007e81 HB |
56 | const char *host_net_devices[] = { |
57 | "tap", | |
58 | "socket", | |
59 | "dump", | |
60 | #ifdef CONFIG_NET_BRIDGE | |
61 | "bridge", | |
62 | #endif | |
027a247b SH |
63 | #ifdef CONFIG_NETMAP |
64 | "netmap", | |
65 | #endif | |
84007e81 HB |
66 | #ifdef CONFIG_SLIRP |
67 | "user", | |
68 | #endif | |
69 | #ifdef CONFIG_VDE | |
70 | "vde", | |
71 | #endif | |
03ce5744 | 72 | "vhost-user", |
84007e81 HB |
73 | NULL, |
74 | }; | |
75 | ||
cb4522cc GH |
76 | int default_net = 1; |
77 | ||
63a01ef8 AL |
78 | /***********************************************************/ |
79 | /* network device redirectors */ | |
80 | ||
68ac40d2 | 81 | #if defined(DEBUG_NET) |
63a01ef8 AL |
82 | static void hex_dump(FILE *f, const uint8_t *buf, int size) |
83 | { | |
84 | int len, i, j, c; | |
85 | ||
86 | for(i=0;i<size;i+=16) { | |
87 | len = size - i; | |
88 | if (len > 16) | |
89 | len = 16; | |
90 | fprintf(f, "%08x ", i); | |
91 | for(j=0;j<16;j++) { | |
92 | if (j < len) | |
93 | fprintf(f, " %02x", buf[i+j]); | |
94 | else | |
95 | fprintf(f, " "); | |
96 | } | |
97 | fprintf(f, " "); | |
98 | for(j=0;j<len;j++) { | |
99 | c = buf[i+j]; | |
100 | if (c < ' ' || c > '~') | |
101 | c = '.'; | |
102 | fprintf(f, "%c", c); | |
103 | } | |
104 | fprintf(f, "\n"); | |
105 | } | |
106 | } | |
107 | #endif | |
108 | ||
63a01ef8 AL |
109 | static int get_str_sep(char *buf, int buf_size, const char **pp, int sep) |
110 | { | |
111 | const char *p, *p1; | |
112 | int len; | |
113 | p = *pp; | |
114 | p1 = strchr(p, sep); | |
115 | if (!p1) | |
116 | return -1; | |
117 | len = p1 - p; | |
118 | p1++; | |
119 | if (buf_size > 0) { | |
120 | if (len > buf_size - 1) | |
121 | len = buf_size - 1; | |
122 | memcpy(buf, p, len); | |
123 | buf[len] = '\0'; | |
124 | } | |
125 | *pp = p1; | |
126 | return 0; | |
127 | } | |
128 | ||
63a01ef8 AL |
129 | int parse_host_port(struct sockaddr_in *saddr, const char *str) |
130 | { | |
131 | char buf[512]; | |
132 | struct hostent *he; | |
133 | const char *p, *r; | |
134 | int port; | |
135 | ||
136 | p = str; | |
137 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) | |
138 | return -1; | |
139 | saddr->sin_family = AF_INET; | |
140 | if (buf[0] == '\0') { | |
141 | saddr->sin_addr.s_addr = 0; | |
142 | } else { | |
cd390083 | 143 | if (qemu_isdigit(buf[0])) { |
63a01ef8 AL |
144 | if (!inet_aton(buf, &saddr->sin_addr)) |
145 | return -1; | |
146 | } else { | |
147 | if ((he = gethostbyname(buf)) == NULL) | |
148 | return - 1; | |
149 | saddr->sin_addr = *(struct in_addr *)he->h_addr; | |
150 | } | |
151 | } | |
152 | port = strtol(p, (char **)&r, 0); | |
153 | if (r == p) | |
154 | return -1; | |
155 | saddr->sin_port = htons(port); | |
156 | return 0; | |
157 | } | |
158 | ||
890ee6ab SF |
159 | char *qemu_mac_strdup_printf(const uint8_t *macaddr) |
160 | { | |
161 | return g_strdup_printf("%.2x:%.2x:%.2x:%.2x:%.2x:%.2x", | |
162 | macaddr[0], macaddr[1], macaddr[2], | |
163 | macaddr[3], macaddr[4], macaddr[5]); | |
164 | } | |
165 | ||
35277d14 | 166 | void qemu_format_nic_info_str(NetClientState *nc, uint8_t macaddr[6]) |
7cb7434b | 167 | { |
35277d14 | 168 | snprintf(nc->info_str, sizeof(nc->info_str), |
4dda4063 | 169 | "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x", |
35277d14 | 170 | nc->model, |
7cb7434b AL |
171 | macaddr[0], macaddr[1], macaddr[2], |
172 | macaddr[3], macaddr[4], macaddr[5]); | |
173 | } | |
174 | ||
2bc22a58 SZ |
175 | static int mac_table[256] = {0}; |
176 | ||
177 | static void qemu_macaddr_set_used(MACAddr *macaddr) | |
178 | { | |
179 | int index; | |
180 | ||
181 | for (index = 0x56; index < 0xFF; index++) { | |
182 | if (macaddr->a[5] == index) { | |
183 | mac_table[index]++; | |
184 | } | |
185 | } | |
186 | } | |
187 | ||
188 | static void qemu_macaddr_set_free(MACAddr *macaddr) | |
189 | { | |
190 | int index; | |
191 | static const MACAddr base = { .a = { 0x52, 0x54, 0x00, 0x12, 0x34, 0 } }; | |
192 | ||
193 | if (memcmp(macaddr->a, &base.a, (sizeof(base.a) - 1)) != 0) { | |
194 | return; | |
195 | } | |
196 | for (index = 0x56; index < 0xFF; index++) { | |
197 | if (macaddr->a[5] == index) { | |
198 | mac_table[index]--; | |
199 | } | |
200 | } | |
201 | } | |
202 | ||
203 | static int qemu_macaddr_get_free(void) | |
204 | { | |
205 | int index; | |
206 | ||
207 | for (index = 0x56; index < 0xFF; index++) { | |
208 | if (mac_table[index] == 0) { | |
209 | return index; | |
210 | } | |
211 | } | |
212 | ||
213 | return -1; | |
214 | } | |
215 | ||
76d32cba GH |
216 | void qemu_macaddr_default_if_unset(MACAddr *macaddr) |
217 | { | |
76d32cba | 218 | static const MACAddr zero = { .a = { 0,0,0,0,0,0 } }; |
2bc22a58 SZ |
219 | static const MACAddr base = { .a = { 0x52, 0x54, 0x00, 0x12, 0x34, 0 } }; |
220 | ||
221 | if (memcmp(macaddr, &zero, sizeof(zero)) != 0) { | |
222 | if (memcmp(macaddr->a, &base.a, (sizeof(base.a) - 1)) != 0) { | |
223 | return; | |
224 | } else { | |
225 | qemu_macaddr_set_used(macaddr); | |
226 | return; | |
227 | } | |
228 | } | |
76d32cba | 229 | |
76d32cba GH |
230 | macaddr->a[0] = 0x52; |
231 | macaddr->a[1] = 0x54; | |
232 | macaddr->a[2] = 0x00; | |
233 | macaddr->a[3] = 0x12; | |
234 | macaddr->a[4] = 0x34; | |
2bc22a58 SZ |
235 | macaddr->a[5] = qemu_macaddr_get_free(); |
236 | qemu_macaddr_set_used(macaddr); | |
76d32cba GH |
237 | } |
238 | ||
d33d93b2 SH |
239 | /** |
240 | * Generate a name for net client | |
241 | * | |
c963530a | 242 | * Only net clients created with the legacy -net option and NICs need this. |
d33d93b2 | 243 | */ |
35277d14 | 244 | static char *assign_name(NetClientState *nc1, const char *model) |
676cff29 | 245 | { |
35277d14 | 246 | NetClientState *nc; |
676cff29 AL |
247 | int id = 0; |
248 | ||
35277d14 SH |
249 | QTAILQ_FOREACH(nc, &net_clients, next) { |
250 | if (nc == nc1) { | |
d33d93b2 | 251 | continue; |
5610c3aa | 252 | } |
c963530a | 253 | if (strcmp(nc->model, model) == 0) { |
53e51d85 MA |
254 | id++; |
255 | } | |
256 | } | |
257 | ||
4bf2c138 | 258 | return g_strdup_printf("%s.%d", model, id); |
676cff29 AL |
259 | } |
260 | ||
f7860455 JW |
261 | static void qemu_net_client_destructor(NetClientState *nc) |
262 | { | |
263 | g_free(nc); | |
264 | } | |
265 | ||
18a1541a JW |
266 | static void qemu_net_client_setup(NetClientState *nc, |
267 | NetClientInfo *info, | |
268 | NetClientState *peer, | |
269 | const char *model, | |
f7860455 JW |
270 | const char *name, |
271 | NetClientDestructor *destructor) | |
63a01ef8 | 272 | { |
35277d14 SH |
273 | nc->info = info; |
274 | nc->model = g_strdup(model); | |
45460d1a | 275 | if (name) { |
35277d14 | 276 | nc->name = g_strdup(name); |
45460d1a | 277 | } else { |
35277d14 | 278 | nc->name = assign_name(nc, model); |
45460d1a | 279 | } |
5610c3aa | 280 | |
ab5f3f84 SH |
281 | if (peer) { |
282 | assert(!peer->peer); | |
35277d14 SH |
283 | nc->peer = peer; |
284 | peer->peer = nc; | |
d80b9fc6 | 285 | } |
35277d14 | 286 | QTAILQ_INSERT_TAIL(&net_clients, nc, next); |
63a01ef8 | 287 | |
067404be | 288 | nc->incoming_queue = qemu_new_net_queue(nc); |
f7860455 | 289 | nc->destructor = destructor; |
18a1541a JW |
290 | } |
291 | ||
292 | NetClientState *qemu_new_net_client(NetClientInfo *info, | |
293 | NetClientState *peer, | |
294 | const char *model, | |
295 | const char *name) | |
296 | { | |
297 | NetClientState *nc; | |
298 | ||
299 | assert(info->size >= sizeof(NetClientState)); | |
300 | ||
301 | nc = g_malloc0(info->size); | |
f7860455 JW |
302 | qemu_net_client_setup(nc, info, peer, model, name, |
303 | qemu_net_client_destructor); | |
18a1541a | 304 | |
35277d14 | 305 | return nc; |
63a01ef8 AL |
306 | } |
307 | ||
ebef2c09 MM |
308 | NICState *qemu_new_nic(NetClientInfo *info, |
309 | NICConf *conf, | |
310 | const char *model, | |
311 | const char *name, | |
312 | void *opaque) | |
313 | { | |
1ceef9f2 | 314 | NetClientState **peers = conf->peers.ncs; |
ebef2c09 | 315 | NICState *nic; |
575a1c0e | 316 | int i, queues = MAX(1, conf->peers.queues); |
ebef2c09 | 317 | |
2be64a68 | 318 | assert(info->type == NET_CLIENT_OPTIONS_KIND_NIC); |
ebef2c09 MM |
319 | assert(info->size >= sizeof(NICState)); |
320 | ||
f6b26cf2 JW |
321 | nic = g_malloc0(info->size + sizeof(NetClientState) * queues); |
322 | nic->ncs = (void *)nic + info->size; | |
ebef2c09 MM |
323 | nic->conf = conf; |
324 | nic->opaque = opaque; | |
325 | ||
f6b26cf2 JW |
326 | for (i = 0; i < queues; i++) { |
327 | qemu_net_client_setup(&nic->ncs[i], info, peers[i], model, name, | |
1ceef9f2 JW |
328 | NULL); |
329 | nic->ncs[i].queue_index = i; | |
330 | } | |
331 | ||
ebef2c09 MM |
332 | return nic; |
333 | } | |
334 | ||
1ceef9f2 JW |
335 | NetClientState *qemu_get_subqueue(NICState *nic, int queue_index) |
336 | { | |
f6b26cf2 | 337 | return nic->ncs + queue_index; |
1ceef9f2 JW |
338 | } |
339 | ||
b356f76d JW |
340 | NetClientState *qemu_get_queue(NICState *nic) |
341 | { | |
1ceef9f2 | 342 | return qemu_get_subqueue(nic, 0); |
b356f76d JW |
343 | } |
344 | ||
cc1f0f45 JW |
345 | NICState *qemu_get_nic(NetClientState *nc) |
346 | { | |
1ceef9f2 JW |
347 | NetClientState *nc0 = nc - nc->queue_index; |
348 | ||
f6b26cf2 | 349 | return (NICState *)((void *)nc0 - nc->info->size); |
cc1f0f45 JW |
350 | } |
351 | ||
352 | void *qemu_get_nic_opaque(NetClientState *nc) | |
353 | { | |
354 | NICState *nic = qemu_get_nic(nc); | |
355 | ||
356 | return nic->opaque; | |
357 | } | |
358 | ||
b20c6b9e | 359 | static void qemu_cleanup_net_client(NetClientState *nc) |
63a01ef8 | 360 | { |
35277d14 | 361 | QTAILQ_REMOVE(&net_clients, nc, next); |
63a01ef8 | 362 | |
cc2a9043 AF |
363 | if (nc->info->cleanup) { |
364 | nc->info->cleanup(nc); | |
365 | } | |
a083a89d | 366 | } |
5610c3aa | 367 | |
b20c6b9e | 368 | static void qemu_free_net_client(NetClientState *nc) |
a083a89d | 369 | { |
067404be JK |
370 | if (nc->incoming_queue) { |
371 | qemu_del_net_queue(nc->incoming_queue); | |
a005d073 | 372 | } |
35277d14 SH |
373 | if (nc->peer) { |
374 | nc->peer->peer = NULL; | |
a083a89d | 375 | } |
35277d14 SH |
376 | g_free(nc->name); |
377 | g_free(nc->model); | |
f7860455 JW |
378 | if (nc->destructor) { |
379 | nc->destructor(nc); | |
380 | } | |
63a01ef8 AL |
381 | } |
382 | ||
b20c6b9e | 383 | void qemu_del_net_client(NetClientState *nc) |
a083a89d | 384 | { |
1ceef9f2 JW |
385 | NetClientState *ncs[MAX_QUEUE_NUM]; |
386 | int queues, i; | |
387 | ||
7fb43911 PB |
388 | assert(nc->info->type != NET_CLIENT_OPTIONS_KIND_NIC); |
389 | ||
1ceef9f2 JW |
390 | /* If the NetClientState belongs to a multiqueue backend, we will change all |
391 | * other NetClientStates also. | |
392 | */ | |
393 | queues = qemu_find_net_clients_except(nc->name, ncs, | |
394 | NET_CLIENT_OPTIONS_KIND_NIC, | |
395 | MAX_QUEUE_NUM); | |
396 | assert(queues != 0); | |
397 | ||
a083a89d | 398 | /* If there is a peer NIC, delete and cleanup client, but do not free. */ |
35277d14 | 399 | if (nc->peer && nc->peer->info->type == NET_CLIENT_OPTIONS_KIND_NIC) { |
cc1f0f45 | 400 | NICState *nic = qemu_get_nic(nc->peer); |
a083a89d MT |
401 | if (nic->peer_deleted) { |
402 | return; | |
403 | } | |
404 | nic->peer_deleted = true; | |
1ceef9f2 JW |
405 | |
406 | for (i = 0; i < queues; i++) { | |
407 | ncs[i]->peer->link_down = true; | |
408 | } | |
409 | ||
35277d14 SH |
410 | if (nc->peer->info->link_status_changed) { |
411 | nc->peer->info->link_status_changed(nc->peer); | |
a083a89d | 412 | } |
1ceef9f2 JW |
413 | |
414 | for (i = 0; i < queues; i++) { | |
415 | qemu_cleanup_net_client(ncs[i]); | |
416 | } | |
417 | ||
a083a89d MT |
418 | return; |
419 | } | |
420 | ||
1ceef9f2 JW |
421 | for (i = 0; i < queues; i++) { |
422 | qemu_cleanup_net_client(ncs[i]); | |
423 | qemu_free_net_client(ncs[i]); | |
424 | } | |
948ecf21 JW |
425 | } |
426 | ||
427 | void qemu_del_nic(NICState *nic) | |
428 | { | |
575a1c0e | 429 | int i, queues = MAX(nic->conf->peers.queues, 1); |
1ceef9f2 | 430 | |
2bc22a58 SZ |
431 | qemu_macaddr_set_free(&nic->conf->macaddr); |
432 | ||
a083a89d | 433 | /* If this is a peer NIC and peer has already been deleted, free it now. */ |
1ceef9f2 JW |
434 | if (nic->peer_deleted) { |
435 | for (i = 0; i < queues; i++) { | |
436 | qemu_free_net_client(qemu_get_subqueue(nic, i)->peer); | |
1a609520 JK |
437 | } |
438 | } | |
1a609520 | 439 | |
1ceef9f2 JW |
440 | for (i = queues - 1; i >= 0; i--) { |
441 | NetClientState *nc = qemu_get_subqueue(nic, i); | |
442 | ||
443 | qemu_cleanup_net_client(nc); | |
444 | qemu_free_net_client(nc); | |
445 | } | |
f6b26cf2 JW |
446 | |
447 | g_free(nic); | |
1a609520 JK |
448 | } |
449 | ||
57f9ef17 MM |
450 | void qemu_foreach_nic(qemu_nic_foreach func, void *opaque) |
451 | { | |
4e68f7a0 | 452 | NetClientState *nc; |
57f9ef17 | 453 | |
94878994 | 454 | QTAILQ_FOREACH(nc, &net_clients, next) { |
2be64a68 | 455 | if (nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC) { |
1ceef9f2 JW |
456 | if (nc->queue_index == 0) { |
457 | func(qemu_get_nic(nc), opaque); | |
458 | } | |
57f9ef17 MM |
459 | } |
460 | } | |
57f9ef17 MM |
461 | } |
462 | ||
d6085e3a | 463 | bool qemu_has_ufo(NetClientState *nc) |
1f55ac45 | 464 | { |
d6085e3a | 465 | if (!nc || !nc->info->has_ufo) { |
1f55ac45 VM |
466 | return false; |
467 | } | |
468 | ||
d6085e3a | 469 | return nc->info->has_ufo(nc); |
1f55ac45 VM |
470 | } |
471 | ||
d6085e3a | 472 | bool qemu_has_vnet_hdr(NetClientState *nc) |
1f55ac45 | 473 | { |
d6085e3a | 474 | if (!nc || !nc->info->has_vnet_hdr) { |
1f55ac45 VM |
475 | return false; |
476 | } | |
477 | ||
d6085e3a | 478 | return nc->info->has_vnet_hdr(nc); |
1f55ac45 VM |
479 | } |
480 | ||
d6085e3a | 481 | bool qemu_has_vnet_hdr_len(NetClientState *nc, int len) |
1f55ac45 | 482 | { |
d6085e3a | 483 | if (!nc || !nc->info->has_vnet_hdr_len) { |
1f55ac45 VM |
484 | return false; |
485 | } | |
486 | ||
d6085e3a | 487 | return nc->info->has_vnet_hdr_len(nc, len); |
1f55ac45 VM |
488 | } |
489 | ||
d6085e3a | 490 | void qemu_using_vnet_hdr(NetClientState *nc, bool enable) |
1f55ac45 | 491 | { |
d6085e3a | 492 | if (!nc || !nc->info->using_vnet_hdr) { |
1f55ac45 VM |
493 | return; |
494 | } | |
495 | ||
d6085e3a | 496 | nc->info->using_vnet_hdr(nc, enable); |
1f55ac45 VM |
497 | } |
498 | ||
d6085e3a | 499 | void qemu_set_offload(NetClientState *nc, int csum, int tso4, int tso6, |
1f55ac45 VM |
500 | int ecn, int ufo) |
501 | { | |
d6085e3a | 502 | if (!nc || !nc->info->set_offload) { |
1f55ac45 VM |
503 | return; |
504 | } | |
505 | ||
d6085e3a | 506 | nc->info->set_offload(nc, csum, tso4, tso6, ecn, ufo); |
1f55ac45 VM |
507 | } |
508 | ||
d6085e3a | 509 | void qemu_set_vnet_hdr_len(NetClientState *nc, int len) |
1f55ac45 | 510 | { |
d6085e3a | 511 | if (!nc || !nc->info->set_vnet_hdr_len) { |
1f55ac45 VM |
512 | return; |
513 | } | |
514 | ||
d6085e3a | 515 | nc->info->set_vnet_hdr_len(nc, len); |
1f55ac45 VM |
516 | } |
517 | ||
c80cd6bb GK |
518 | int qemu_set_vnet_le(NetClientState *nc, bool is_le) |
519 | { | |
520 | if (!nc || !nc->info->set_vnet_le) { | |
521 | return -ENOSYS; | |
522 | } | |
523 | ||
524 | return nc->info->set_vnet_le(nc, is_le); | |
525 | } | |
526 | ||
527 | int qemu_set_vnet_be(NetClientState *nc, bool is_be) | |
528 | { | |
529 | if (!nc || !nc->info->set_vnet_be) { | |
530 | return -ENOSYS; | |
531 | } | |
532 | ||
533 | return nc->info->set_vnet_be(nc, is_be); | |
534 | } | |
535 | ||
4e68f7a0 | 536 | int qemu_can_send_packet(NetClientState *sender) |
63a01ef8 | 537 | { |
e1d64c08 HZ |
538 | int vm_running = runstate_is_running(); |
539 | ||
540 | if (!vm_running) { | |
541 | return 0; | |
542 | } | |
543 | ||
a005d073 | 544 | if (!sender->peer) { |
d80b9fc6 MM |
545 | return 1; |
546 | } | |
547 | ||
a005d073 SH |
548 | if (sender->peer->receive_disabled) { |
549 | return 0; | |
550 | } else if (sender->peer->info->can_receive && | |
551 | !sender->peer->info->can_receive(sender->peer)) { | |
552 | return 0; | |
63a01ef8 | 553 | } |
60c07d93 | 554 | return 1; |
63a01ef8 AL |
555 | } |
556 | ||
86a77c38 ZYW |
557 | ssize_t qemu_deliver_packet(NetClientState *sender, |
558 | unsigned flags, | |
559 | const uint8_t *data, | |
560 | size_t size, | |
561 | void *opaque) | |
9a6ecb30 | 562 | { |
35277d14 | 563 | NetClientState *nc = opaque; |
893379ef | 564 | ssize_t ret; |
9a6ecb30 | 565 | |
35277d14 | 566 | if (nc->link_down) { |
9a6ecb30 MM |
567 | return size; |
568 | } | |
569 | ||
35277d14 | 570 | if (nc->receive_disabled) { |
893379ef MM |
571 | return 0; |
572 | } | |
573 | ||
35277d14 SH |
574 | if (flags & QEMU_NET_PACKET_FLAG_RAW && nc->info->receive_raw) { |
575 | ret = nc->info->receive_raw(nc, data, size); | |
893379ef | 576 | } else { |
35277d14 | 577 | ret = nc->info->receive(nc, data, size); |
893379ef MM |
578 | } |
579 | ||
580 | if (ret == 0) { | |
35277d14 | 581 | nc->receive_disabled = 1; |
b9259652 | 582 | } |
893379ef MM |
583 | |
584 | return ret; | |
9a6ecb30 MM |
585 | } |
586 | ||
35277d14 | 587 | void qemu_purge_queued_packets(NetClientState *nc) |
8cad5516 | 588 | { |
35277d14 | 589 | if (!nc->peer) { |
d80b9fc6 | 590 | return; |
9a6ecb30 | 591 | } |
d80b9fc6 | 592 | |
067404be | 593 | qemu_net_queue_purge(nc->peer->incoming_queue, nc); |
8cad5516 MM |
594 | } |
595 | ||
ca77d85e MT |
596 | static |
597 | void qemu_flush_or_purge_queued_packets(NetClientState *nc, bool purge) | |
e94667b9 | 598 | { |
35277d14 | 599 | nc->receive_disabled = 0; |
9a6ecb30 | 600 | |
199ee608 LR |
601 | if (nc->peer && nc->peer->info->type == NET_CLIENT_OPTIONS_KIND_HUBPORT) { |
602 | if (net_hub_flush(nc->peer)) { | |
603 | qemu_notify_event(); | |
604 | } | |
199ee608 | 605 | } |
067404be | 606 | if (qemu_net_queue_flush(nc->incoming_queue)) { |
987a9b48 PB |
607 | /* We emptied the queue successfully, signal to the IO thread to repoll |
608 | * the file descriptor (for tap, for example). | |
609 | */ | |
610 | qemu_notify_event(); | |
ca77d85e MT |
611 | } else if (purge) { |
612 | /* Unable to empty the queue, purge remaining packets */ | |
613 | qemu_net_queue_purge(nc->incoming_queue, nc); | |
987a9b48 | 614 | } |
e94667b9 MM |
615 | } |
616 | ||
ca77d85e MT |
617 | void qemu_flush_queued_packets(NetClientState *nc) |
618 | { | |
619 | qemu_flush_or_purge_queued_packets(nc, false); | |
620 | } | |
621 | ||
4e68f7a0 | 622 | static ssize_t qemu_send_packet_async_with_flags(NetClientState *sender, |
ca77d175 MM |
623 | unsigned flags, |
624 | const uint8_t *buf, int size, | |
625 | NetPacketSent *sent_cb) | |
764a4d1d | 626 | { |
9a6ecb30 | 627 | NetQueue *queue; |
436e5e53 | 628 | |
63a01ef8 | 629 | #ifdef DEBUG_NET |
d80b9fc6 | 630 | printf("qemu_send_packet_async:\n"); |
63a01ef8 AL |
631 | hex_dump(stdout, buf, size); |
632 | #endif | |
f3b6c7fc | 633 | |
a005d073 | 634 | if (sender->link_down || !sender->peer) { |
9a6ecb30 MM |
635 | return size; |
636 | } | |
637 | ||
067404be | 638 | queue = sender->peer->incoming_queue; |
9a6ecb30 | 639 | |
ca77d175 MM |
640 | return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb); |
641 | } | |
642 | ||
4e68f7a0 | 643 | ssize_t qemu_send_packet_async(NetClientState *sender, |
ca77d175 MM |
644 | const uint8_t *buf, int size, |
645 | NetPacketSent *sent_cb) | |
646 | { | |
647 | return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE, | |
648 | buf, size, sent_cb); | |
f3b6c7fc MM |
649 | } |
650 | ||
35277d14 | 651 | void qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size) |
f3b6c7fc | 652 | { |
35277d14 | 653 | qemu_send_packet_async(nc, buf, size, NULL); |
63a01ef8 AL |
654 | } |
655 | ||
35277d14 | 656 | ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size) |
ca77d175 | 657 | { |
35277d14 | 658 | return qemu_send_packet_async_with_flags(nc, QEMU_NET_PACKET_FLAG_RAW, |
ca77d175 MM |
659 | buf, size, NULL); |
660 | } | |
661 | ||
35277d14 | 662 | static ssize_t nc_sendv_compat(NetClientState *nc, const struct iovec *iov, |
fbe78f4f AL |
663 | int iovcnt) |
664 | { | |
d32fcad3 | 665 | uint8_t buffer[NET_BUFSIZE]; |
ce053661 | 666 | size_t offset; |
fbe78f4f | 667 | |
dcf6f5e1 | 668 | offset = iov_to_buf(iov, iovcnt, 0, buffer, sizeof(buffer)); |
fbe78f4f | 669 | |
35277d14 | 670 | return nc->info->receive(nc, buffer, offset); |
fbe78f4f AL |
671 | } |
672 | ||
86a77c38 ZYW |
673 | ssize_t qemu_deliver_packet_iov(NetClientState *sender, |
674 | unsigned flags, | |
675 | const struct iovec *iov, | |
676 | int iovcnt, | |
677 | void *opaque) | |
9a6ecb30 | 678 | { |
35277d14 | 679 | NetClientState *nc = opaque; |
c67f5dc1 | 680 | int ret; |
9a6ecb30 | 681 | |
35277d14 | 682 | if (nc->link_down) { |
ce053661 | 683 | return iov_size(iov, iovcnt); |
9a6ecb30 MM |
684 | } |
685 | ||
c67f5dc1 SH |
686 | if (nc->receive_disabled) { |
687 | return 0; | |
688 | } | |
689 | ||
35277d14 | 690 | if (nc->info->receive_iov) { |
c67f5dc1 | 691 | ret = nc->info->receive_iov(nc, iov, iovcnt); |
9a6ecb30 | 692 | } else { |
c67f5dc1 SH |
693 | ret = nc_sendv_compat(nc, iov, iovcnt); |
694 | } | |
695 | ||
696 | if (ret == 0) { | |
697 | nc->receive_disabled = 1; | |
e94667b9 | 698 | } |
c67f5dc1 SH |
699 | |
700 | return ret; | |
e94667b9 MM |
701 | } |
702 | ||
4e68f7a0 | 703 | ssize_t qemu_sendv_packet_async(NetClientState *sender, |
f3b6c7fc MM |
704 | const struct iovec *iov, int iovcnt, |
705 | NetPacketSent *sent_cb) | |
e94667b9 | 706 | { |
9a6ecb30 MM |
707 | NetQueue *queue; |
708 | ||
a005d073 | 709 | if (sender->link_down || !sender->peer) { |
ce053661 | 710 | return iov_size(iov, iovcnt); |
e94667b9 MM |
711 | } |
712 | ||
067404be | 713 | queue = sender->peer->incoming_queue; |
9a6ecb30 | 714 | |
c0b8e49c MM |
715 | return qemu_net_queue_send_iov(queue, sender, |
716 | QEMU_NET_PACKET_FLAG_NONE, | |
717 | iov, iovcnt, sent_cb); | |
fbe78f4f AL |
718 | } |
719 | ||
f3b6c7fc | 720 | ssize_t |
35277d14 | 721 | qemu_sendv_packet(NetClientState *nc, const struct iovec *iov, int iovcnt) |
f3b6c7fc | 722 | { |
35277d14 | 723 | return qemu_sendv_packet_async(nc, iov, iovcnt, NULL); |
63a01ef8 AL |
724 | } |
725 | ||
4e68f7a0 | 726 | NetClientState *qemu_find_netdev(const char *id) |
5869c4d5 | 727 | { |
35277d14 | 728 | NetClientState *nc; |
5869c4d5 | 729 | |
35277d14 SH |
730 | QTAILQ_FOREACH(nc, &net_clients, next) { |
731 | if (nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC) | |
85dde9a9 | 732 | continue; |
35277d14 SH |
733 | if (!strcmp(nc->name, id)) { |
734 | return nc; | |
5869c4d5 MM |
735 | } |
736 | } | |
737 | ||
738 | return NULL; | |
739 | } | |
740 | ||
6c51ae73 JW |
741 | int qemu_find_net_clients_except(const char *id, NetClientState **ncs, |
742 | NetClientOptionsKind type, int max) | |
743 | { | |
744 | NetClientState *nc; | |
745 | int ret = 0; | |
746 | ||
747 | QTAILQ_FOREACH(nc, &net_clients, next) { | |
748 | if (nc->info->type == type) { | |
749 | continue; | |
750 | } | |
40d19394 | 751 | if (!id || !strcmp(nc->name, id)) { |
6c51ae73 JW |
752 | if (ret < max) { |
753 | ncs[ret] = nc; | |
754 | } | |
755 | ret++; | |
756 | } | |
757 | } | |
758 | ||
759 | return ret; | |
760 | } | |
761 | ||
7697079b AL |
762 | static int nic_get_free_idx(void) |
763 | { | |
764 | int index; | |
765 | ||
766 | for (index = 0; index < MAX_NICS; index++) | |
767 | if (!nd_table[index].used) | |
768 | return index; | |
769 | return -1; | |
770 | } | |
771 | ||
07caea31 MA |
772 | int qemu_show_nic_models(const char *arg, const char *const *models) |
773 | { | |
774 | int i; | |
775 | ||
c8057f95 | 776 | if (!arg || !is_help_option(arg)) { |
07caea31 | 777 | return 0; |
c8057f95 | 778 | } |
07caea31 MA |
779 | |
780 | fprintf(stderr, "qemu: Supported NIC models: "); | |
781 | for (i = 0 ; models[i]; i++) | |
782 | fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n'); | |
783 | return 1; | |
784 | } | |
785 | ||
d07f22c5 AL |
786 | void qemu_check_nic_model(NICInfo *nd, const char *model) |
787 | { | |
788 | const char *models[2]; | |
789 | ||
790 | models[0] = model; | |
791 | models[1] = NULL; | |
792 | ||
07caea31 MA |
793 | if (qemu_show_nic_models(nd->model, models)) |
794 | exit(0); | |
795 | if (qemu_find_nic_model(nd, models, model) < 0) | |
796 | exit(1); | |
d07f22c5 AL |
797 | } |
798 | ||
07caea31 MA |
799 | int qemu_find_nic_model(NICInfo *nd, const char * const *models, |
800 | const char *default_model) | |
d07f22c5 | 801 | { |
07caea31 | 802 | int i; |
d07f22c5 AL |
803 | |
804 | if (!nd->model) | |
7267c094 | 805 | nd->model = g_strdup(default_model); |
d07f22c5 | 806 | |
07caea31 MA |
807 | for (i = 0 ; models[i]; i++) { |
808 | if (strcmp(nd->model, models[i]) == 0) | |
809 | return i; | |
d07f22c5 AL |
810 | } |
811 | ||
6daf194d | 812 | error_report("Unsupported NIC model: %s", nd->model); |
07caea31 | 813 | return -1; |
d07f22c5 AL |
814 | } |
815 | ||
1a0c0958 | 816 | static int net_init_nic(const NetClientOptions *opts, const char *name, |
a30ecde6 | 817 | NetClientState *peer, Error **errp) |
f83c6e10 MM |
818 | { |
819 | int idx; | |
820 | NICInfo *nd; | |
2456f36f LE |
821 | const NetLegacyNicOptions *nic; |
822 | ||
823 | assert(opts->kind == NET_CLIENT_OPTIONS_KIND_NIC); | |
824 | nic = opts->nic; | |
f83c6e10 MM |
825 | |
826 | idx = nic_get_free_idx(); | |
827 | if (idx == -1 || nb_nics >= MAX_NICS) { | |
66308868 | 828 | error_setg(errp, "too many NICs"); |
f83c6e10 MM |
829 | return -1; |
830 | } | |
831 | ||
832 | nd = &nd_table[idx]; | |
833 | ||
834 | memset(nd, 0, sizeof(*nd)); | |
835 | ||
2456f36f LE |
836 | if (nic->has_netdev) { |
837 | nd->netdev = qemu_find_netdev(nic->netdev); | |
5869c4d5 | 838 | if (!nd->netdev) { |
66308868 | 839 | error_setg(errp, "netdev '%s' not found", nic->netdev); |
5869c4d5 MM |
840 | return -1; |
841 | } | |
842 | } else { | |
d33d93b2 SH |
843 | assert(peer); |
844 | nd->netdev = peer; | |
5869c4d5 | 845 | } |
c64f50d1 | 846 | nd->name = g_strdup(name); |
2456f36f LE |
847 | if (nic->has_model) { |
848 | nd->model = g_strdup(nic->model); | |
f83c6e10 | 849 | } |
2456f36f LE |
850 | if (nic->has_addr) { |
851 | nd->devaddr = g_strdup(nic->addr); | |
f83c6e10 MM |
852 | } |
853 | ||
2456f36f LE |
854 | if (nic->has_macaddr && |
855 | net_parse_macaddr(nd->macaddr.a, nic->macaddr) < 0) { | |
66308868 | 856 | error_setg(errp, "invalid syntax for ethernet address"); |
f83c6e10 MM |
857 | return -1; |
858 | } | |
d60b20cf DK |
859 | if (nic->has_macaddr && |
860 | is_multicast_ether_addr(nd->macaddr.a)) { | |
66308868 MA |
861 | error_setg(errp, |
862 | "NIC cannot have multicast MAC address (odd 1st byte)"); | |
d60b20cf DK |
863 | return -1; |
864 | } | |
6eed1856 | 865 | qemu_macaddr_default_if_unset(&nd->macaddr); |
f83c6e10 | 866 | |
2456f36f LE |
867 | if (nic->has_vectors) { |
868 | if (nic->vectors > 0x7ffffff) { | |
66308868 | 869 | error_setg(errp, "invalid # of vectors: %"PRIu32, nic->vectors); |
2456f36f LE |
870 | return -1; |
871 | } | |
872 | nd->nvectors = nic->vectors; | |
873 | } else { | |
874 | nd->nvectors = DEV_NVECTORS_UNSPECIFIED; | |
f83c6e10 MM |
875 | } |
876 | ||
877 | nd->used = 1; | |
f83c6e10 MM |
878 | nb_nics++; |
879 | ||
880 | return idx; | |
881 | } | |
882 | ||
6687b79d LE |
883 | |
884 | static int (* const net_client_init_fun[NET_CLIENT_OPTIONS_KIND_MAX])( | |
1a0c0958 | 885 | const NetClientOptions *opts, |
6687b79d | 886 | const char *name, |
a30ecde6 | 887 | NetClientState *peer, Error **errp) = { |
f6c874e3 | 888 | [NET_CLIENT_OPTIONS_KIND_NIC] = net_init_nic, |
ec302ffd | 889 | #ifdef CONFIG_SLIRP |
f6c874e3 | 890 | [NET_CLIENT_OPTIONS_KIND_USER] = net_init_slirp, |
2944e4ec | 891 | #endif |
f6c874e3 SH |
892 | [NET_CLIENT_OPTIONS_KIND_TAP] = net_init_tap, |
893 | [NET_CLIENT_OPTIONS_KIND_SOCKET] = net_init_socket, | |
dd51058d | 894 | #ifdef CONFIG_VDE |
f6c874e3 | 895 | [NET_CLIENT_OPTIONS_KIND_VDE] = net_init_vde, |
58952137 VM |
896 | #endif |
897 | #ifdef CONFIG_NETMAP | |
898 | [NET_CLIENT_OPTIONS_KIND_NETMAP] = net_init_netmap, | |
dd51058d | 899 | #endif |
f6c874e3 | 900 | [NET_CLIENT_OPTIONS_KIND_DUMP] = net_init_dump, |
2944e4ec | 901 | #ifdef CONFIG_NET_BRIDGE |
f6c874e3 | 902 | [NET_CLIENT_OPTIONS_KIND_BRIDGE] = net_init_bridge, |
6687b79d | 903 | #endif |
f6c874e3 | 904 | [NET_CLIENT_OPTIONS_KIND_HUBPORT] = net_init_hubport, |
03ce5744 NN |
905 | #ifdef CONFIG_VHOST_NET_USED |
906 | [NET_CLIENT_OPTIONS_KIND_VHOST_USER] = net_init_vhost_user, | |
907 | #endif | |
015a33bd | 908 | #ifdef CONFIG_L2TPV3 |
3fb69aa1 AI |
909 | [NET_CLIENT_OPTIONS_KIND_L2TPV3] = net_init_l2tpv3, |
910 | #endif | |
f83c6e10 MM |
911 | }; |
912 | ||
6687b79d | 913 | |
1a0c0958 | 914 | static int net_client_init1(const void *object, int is_netdev, Error **errp) |
f83c6e10 | 915 | { |
6687b79d | 916 | const NetClientOptions *opts; |
6d952ebe | 917 | const char *name; |
4ef0defb | 918 | NetClientState *peer = NULL; |
f83c6e10 | 919 | |
5294e2c7 | 920 | if (is_netdev) { |
1e81aba5 SH |
921 | const Netdev *netdev = object; |
922 | opts = netdev->opts; | |
923 | name = netdev->id; | |
6687b79d | 924 | |
1322629b SH |
925 | if (opts->kind == NET_CLIENT_OPTIONS_KIND_DUMP || |
926 | opts->kind == NET_CLIENT_OPTIONS_KIND_NIC || | |
927 | !net_client_init_fun[opts->kind]) { | |
c6bd8c70 MA |
928 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "type", |
929 | "a netdev backend type"); | |
f6b134ac MM |
930 | return -1; |
931 | } | |
6687b79d | 932 | } else { |
1e81aba5 SH |
933 | const NetLegacy *net = object; |
934 | opts = net->opts; | |
6687b79d | 935 | /* missing optional values have been initialized to "all bits zero" */ |
1e81aba5 | 936 | name = net->has_id ? net->id : net->name; |
d139e9a6 SH |
937 | |
938 | if (opts->kind == NET_CLIENT_OPTIONS_KIND_NONE) { | |
939 | return 0; /* nothing to do */ | |
940 | } | |
1e81aba5 SH |
941 | if (opts->kind == NET_CLIENT_OPTIONS_KIND_HUBPORT) { |
942 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "type", | |
943 | "a net type"); | |
944 | return -1; | |
945 | } | |
d139e9a6 SH |
946 | |
947 | if (!net_client_init_fun[opts->kind]) { | |
948 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "type", | |
949 | "a net backend type (maybe it is not compiled " | |
950 | "into this binary)"); | |
951 | return -1; | |
952 | } | |
f6b134ac | 953 | |
1e81aba5 SH |
954 | /* Do not add to a vlan if it's a nic with a netdev= parameter. */ |
955 | if (opts->kind != NET_CLIENT_OPTIONS_KIND_NIC || | |
956 | !opts->nic->has_netdev) { | |
957 | peer = net_hub_add_port(net->has_vlan ? net->vlan : 0, NULL); | |
958 | } | |
4ef0defb | 959 | } |
6687b79d | 960 | |
4ef0defb SH |
961 | if (net_client_init_fun[opts->kind](opts, name, peer, errp) < 0) { |
962 | /* FIXME drop when all init functions store an Error */ | |
963 | if (errp && !*errp) { | |
964 | error_setg(errp, QERR_DEVICE_INIT_FAILED, | |
965 | NetClientOptionsKind_lookup[opts->kind]); | |
f6b134ac | 966 | } |
4ef0defb | 967 | return -1; |
f6b134ac | 968 | } |
6687b79d LE |
969 | return 0; |
970 | } | |
971 | ||
f6b134ac | 972 | |
6687b79d LE |
973 | static void net_visit(Visitor *v, int is_netdev, void **object, Error **errp) |
974 | { | |
975 | if (is_netdev) { | |
976 | visit_type_Netdev(v, (Netdev **)object, NULL, errp); | |
977 | } else { | |
978 | visit_type_NetLegacy(v, (NetLegacy **)object, NULL, errp); | |
6d952ebe | 979 | } |
6687b79d | 980 | } |
6d952ebe | 981 | |
f6b134ac | 982 | |
6687b79d LE |
983 | int net_client_init(QemuOpts *opts, int is_netdev, Error **errp) |
984 | { | |
985 | void *object = NULL; | |
986 | Error *err = NULL; | |
987 | int ret = -1; | |
f83c6e10 | 988 | |
6687b79d LE |
989 | { |
990 | OptsVisitor *ov = opts_visitor_new(opts); | |
f6b134ac | 991 | |
6687b79d LE |
992 | net_visit(opts_get_visitor(ov), is_netdev, &object, &err); |
993 | opts_visitor_cleanup(ov); | |
f83c6e10 MM |
994 | } |
995 | ||
6687b79d | 996 | if (!err) { |
1a0c0958 | 997 | ret = net_client_init1(object, is_netdev, &err); |
6687b79d LE |
998 | } |
999 | ||
1000 | if (object) { | |
1001 | QapiDeallocVisitor *dv = qapi_dealloc_visitor_new(); | |
1002 | ||
1003 | net_visit(qapi_dealloc_get_visitor(dv), is_netdev, &object, NULL); | |
1004 | qapi_dealloc_visitor_cleanup(dv); | |
1005 | } | |
1006 | ||
1007 | error_propagate(errp, err); | |
1008 | return ret; | |
f83c6e10 MM |
1009 | } |
1010 | ||
6687b79d | 1011 | |
6f338c34 AL |
1012 | static int net_host_check_device(const char *device) |
1013 | { | |
1014 | int i; | |
84007e81 HB |
1015 | for (i = 0; host_net_devices[i]; i++) { |
1016 | if (!strncmp(host_net_devices[i], device, | |
1017 | strlen(host_net_devices[i]))) { | |
6f338c34 | 1018 | return 1; |
84007e81 | 1019 | } |
6f338c34 AL |
1020 | } |
1021 | ||
1022 | return 0; | |
1023 | } | |
1024 | ||
3e5a50d6 | 1025 | void hmp_host_net_add(Monitor *mon, const QDict *qdict) |
6f338c34 | 1026 | { |
f18c16de | 1027 | const char *device = qdict_get_str(qdict, "device"); |
7f1c9d20 | 1028 | const char *opts_str = qdict_get_try_str(qdict, "opts"); |
4559a1db | 1029 | Error *local_err = NULL; |
7f1c9d20 | 1030 | QemuOpts *opts; |
f18c16de | 1031 | |
6f338c34 | 1032 | if (!net_host_check_device(device)) { |
376253ec | 1033 | monitor_printf(mon, "invalid host network device %s\n", device); |
6f338c34 AL |
1034 | return; |
1035 | } | |
7f1c9d20 | 1036 | |
70b94331 MA |
1037 | opts = qemu_opts_parse_noisily(qemu_find_opts("net"), |
1038 | opts_str ? opts_str : "", false); | |
7f1c9d20 | 1039 | if (!opts) { |
7f1c9d20 MM |
1040 | return; |
1041 | } | |
1042 | ||
f43e47db | 1043 | qemu_opt_set(opts, "type", device, &error_abort); |
7f1c9d20 | 1044 | |
4559a1db | 1045 | net_client_init(opts, 0, &local_err); |
84d18f06 | 1046 | if (local_err) { |
12d0cc2d | 1047 | error_report_err(local_err); |
5c8be678 AL |
1048 | monitor_printf(mon, "adding host network device %s failed\n", device); |
1049 | } | |
6f338c34 AL |
1050 | } |
1051 | ||
3e5a50d6 | 1052 | void hmp_host_net_remove(Monitor *mon, const QDict *qdict) |
6f338c34 | 1053 | { |
35277d14 | 1054 | NetClientState *nc; |
f18c16de LC |
1055 | int vlan_id = qdict_get_int(qdict, "vlan_id"); |
1056 | const char *device = qdict_get_str(qdict, "device"); | |
6f338c34 | 1057 | |
35277d14 SH |
1058 | nc = net_hub_find_client_by_name(vlan_id, device); |
1059 | if (!nc) { | |
86e11772 HB |
1060 | error_report("Host network device '%s' on hub '%d' not found", |
1061 | device, vlan_id); | |
6f338c34 AL |
1062 | return; |
1063 | } | |
7fb43911 | 1064 | if (nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC) { |
86e11772 | 1065 | error_report("invalid host network device '%s'", device); |
e8f1f9db AL |
1066 | return; |
1067 | } | |
64a55d60 JW |
1068 | |
1069 | qemu_del_net_client(nc->peer); | |
b20c6b9e | 1070 | qemu_del_net_client(nc); |
6f338c34 AL |
1071 | } |
1072 | ||
928059a3 LC |
1073 | void netdev_add(QemuOpts *opts, Error **errp) |
1074 | { | |
1075 | net_client_init(opts, 1, errp); | |
1076 | } | |
1077 | ||
485febc6 | 1078 | void qmp_netdev_add(QDict *qdict, QObject **ret, Error **errp) |
ae82d324 | 1079 | { |
4e89978e | 1080 | Error *local_err = NULL; |
928059a3 | 1081 | QemuOptsList *opts_list; |
ae82d324 | 1082 | QemuOpts *opts; |
ae82d324 | 1083 | |
928059a3 | 1084 | opts_list = qemu_find_opts_err("netdev", &local_err); |
84d18f06 | 1085 | if (local_err) { |
485febc6 | 1086 | goto out; |
ae82d324 MA |
1087 | } |
1088 | ||
928059a3 | 1089 | opts = qemu_opts_from_qdict(opts_list, qdict, &local_err); |
84d18f06 | 1090 | if (local_err) { |
485febc6 | 1091 | goto out; |
928059a3 LC |
1092 | } |
1093 | ||
1094 | netdev_add(opts, &local_err); | |
84d18f06 | 1095 | if (local_err) { |
410cbafe | 1096 | qemu_opts_del(opts); |
485febc6 | 1097 | goto out; |
410cbafe YT |
1098 | } |
1099 | ||
485febc6 MA |
1100 | out: |
1101 | error_propagate(errp, local_err); | |
ae82d324 MA |
1102 | } |
1103 | ||
5f964155 | 1104 | void qmp_netdev_del(const char *id, Error **errp) |
ae82d324 | 1105 | { |
35277d14 | 1106 | NetClientState *nc; |
645c9496 | 1107 | QemuOpts *opts; |
ae82d324 | 1108 | |
35277d14 SH |
1109 | nc = qemu_find_netdev(id); |
1110 | if (!nc) { | |
75158ebb MA |
1111 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
1112 | "Device '%s' not found", id); | |
5f964155 | 1113 | return; |
ae82d324 | 1114 | } |
5f964155 | 1115 | |
645c9496 SH |
1116 | opts = qemu_opts_find(qemu_find_opts_err("netdev", NULL), id); |
1117 | if (!opts) { | |
1118 | error_setg(errp, "Device '%s' is not a netdev", id); | |
1119 | return; | |
1120 | } | |
1121 | ||
b20c6b9e | 1122 | qemu_del_net_client(nc); |
645c9496 | 1123 | qemu_opts_del(opts); |
ae82d324 MA |
1124 | } |
1125 | ||
1a859593 | 1126 | void print_net_client(Monitor *mon, NetClientState *nc) |
44e798d3 | 1127 | { |
1ceef9f2 JW |
1128 | monitor_printf(mon, "%s: index=%d,type=%s,%s\n", nc->name, |
1129 | nc->queue_index, | |
1130 | NetClientOptionsKind_lookup[nc->info->type], | |
1131 | nc->info_str); | |
44e798d3 JK |
1132 | } |
1133 | ||
b1be4280 AK |
1134 | RxFilterInfoList *qmp_query_rx_filter(bool has_name, const char *name, |
1135 | Error **errp) | |
1136 | { | |
1137 | NetClientState *nc; | |
1138 | RxFilterInfoList *filter_list = NULL, *last_entry = NULL; | |
1139 | ||
1140 | QTAILQ_FOREACH(nc, &net_clients, next) { | |
1141 | RxFilterInfoList *entry; | |
1142 | RxFilterInfo *info; | |
1143 | ||
1144 | if (has_name && strcmp(nc->name, name) != 0) { | |
1145 | continue; | |
1146 | } | |
1147 | ||
1148 | /* only query rx-filter information of NIC */ | |
1149 | if (nc->info->type != NET_CLIENT_OPTIONS_KIND_NIC) { | |
1150 | if (has_name) { | |
1151 | error_setg(errp, "net client(%s) isn't a NIC", name); | |
9083da1d | 1152 | return NULL; |
b1be4280 AK |
1153 | } |
1154 | continue; | |
1155 | } | |
1156 | ||
1157 | if (nc->info->query_rx_filter) { | |
1158 | info = nc->info->query_rx_filter(nc); | |
1159 | entry = g_malloc0(sizeof(*entry)); | |
1160 | entry->value = info; | |
1161 | ||
1162 | if (!filter_list) { | |
1163 | filter_list = entry; | |
1164 | } else { | |
1165 | last_entry->next = entry; | |
1166 | } | |
1167 | last_entry = entry; | |
1168 | } else if (has_name) { | |
1169 | error_setg(errp, "net client(%s) doesn't support" | |
1170 | " rx-filter querying", name); | |
9083da1d | 1171 | return NULL; |
b1be4280 | 1172 | } |
638fb141 MA |
1173 | |
1174 | if (has_name) { | |
1175 | break; | |
1176 | } | |
b1be4280 AK |
1177 | } |
1178 | ||
9083da1d | 1179 | if (filter_list == NULL && has_name) { |
b1be4280 AK |
1180 | error_setg(errp, "invalid net client name: %s", name); |
1181 | } | |
1182 | ||
1183 | return filter_list; | |
1184 | } | |
1185 | ||
1ce6be24 | 1186 | void hmp_info_network(Monitor *mon, const QDict *qdict) |
63a01ef8 | 1187 | { |
35277d14 | 1188 | NetClientState *nc, *peer; |
2be64a68 | 1189 | NetClientOptionsKind type; |
63a01ef8 | 1190 | |
1a859593 ZYW |
1191 | net_hub_info(mon); |
1192 | ||
35277d14 SH |
1193 | QTAILQ_FOREACH(nc, &net_clients, next) { |
1194 | peer = nc->peer; | |
1195 | type = nc->info->type; | |
5610c3aa | 1196 | |
1a859593 ZYW |
1197 | /* Skip if already printed in hub info */ |
1198 | if (net_hub_id_for_client(nc, NULL) == 0) { | |
1199 | continue; | |
5610c3aa | 1200 | } |
1a859593 | 1201 | |
2be64a68 | 1202 | if (!peer || type == NET_CLIENT_OPTIONS_KIND_NIC) { |
35277d14 | 1203 | print_net_client(mon, nc); |
19061e63 | 1204 | } /* else it's a netdev connected to a NIC, printed with the NIC */ |
2be64a68 | 1205 | if (peer && type == NET_CLIENT_OPTIONS_KIND_NIC) { |
1a859593 | 1206 | monitor_printf(mon, " \\ "); |
44e798d3 | 1207 | print_net_client(mon, peer); |
a0104e0e | 1208 | } |
a0104e0e | 1209 | } |
63a01ef8 AL |
1210 | } |
1211 | ||
4b37156c | 1212 | void qmp_set_link(const char *name, bool up, Error **errp) |
436e5e53 | 1213 | { |
1ceef9f2 JW |
1214 | NetClientState *ncs[MAX_QUEUE_NUM]; |
1215 | NetClientState *nc; | |
1216 | int queues, i; | |
436e5e53 | 1217 | |
1ceef9f2 JW |
1218 | queues = qemu_find_net_clients_except(name, ncs, |
1219 | NET_CLIENT_OPTIONS_KIND_MAX, | |
1220 | MAX_QUEUE_NUM); | |
1221 | ||
1222 | if (queues == 0) { | |
75158ebb MA |
1223 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
1224 | "Device '%s' not found", name); | |
4b37156c | 1225 | return; |
436e5e53 | 1226 | } |
1ceef9f2 | 1227 | nc = ncs[0]; |
436e5e53 | 1228 | |
1ceef9f2 JW |
1229 | for (i = 0; i < queues; i++) { |
1230 | ncs[i]->link_down = !up; | |
1231 | } | |
436e5e53 | 1232 | |
35277d14 SH |
1233 | if (nc->info->link_status_changed) { |
1234 | nc->info->link_status_changed(nc); | |
665a3b07 | 1235 | } |
ab1cbe1c | 1236 | |
02d38fcb VY |
1237 | if (nc->peer) { |
1238 | /* Change peer link only if the peer is NIC and then notify peer. | |
1239 | * If the peer is a HUBPORT or a backend, we do not change the | |
1240 | * link status. | |
1241 | * | |
1242 | * This behavior is compatible with qemu vlans where there could be | |
1243 | * multiple clients that can still communicate with each other in | |
1244 | * disconnected mode. For now maintain this compatibility. | |
1245 | */ | |
1246 | if (nc->peer->info->type == NET_CLIENT_OPTIONS_KIND_NIC) { | |
1247 | for (i = 0; i < queues; i++) { | |
1248 | ncs[i]->peer->link_down = !up; | |
1249 | } | |
1250 | } | |
1251 | if (nc->peer->info->link_status_changed) { | |
1252 | nc->peer->info->link_status_changed(nc->peer); | |
1253 | } | |
ab1cbe1c | 1254 | } |
436e5e53 AL |
1255 | } |
1256 | ||
ca77d85e MT |
1257 | static void net_vm_change_state_handler(void *opaque, int running, |
1258 | RunState state) | |
1259 | { | |
1260 | /* Complete all queued packets, to guarantee we don't modify | |
1261 | * state later when VM is not running. | |
1262 | */ | |
1263 | if (!running) { | |
1264 | NetClientState *nc; | |
1265 | NetClientState *tmp; | |
1266 | ||
1267 | QTAILQ_FOREACH_SAFE(nc, &net_clients, next, tmp) { | |
1268 | qemu_flush_or_purge_queued_packets(nc, true); | |
1269 | } | |
1270 | } | |
1271 | } | |
1272 | ||
63a01ef8 AL |
1273 | void net_cleanup(void) |
1274 | { | |
1ceef9f2 | 1275 | NetClientState *nc; |
577c4af9 | 1276 | |
1ceef9f2 JW |
1277 | /* We may del multiple entries during qemu_del_net_client(), |
1278 | * so QTAILQ_FOREACH_SAFE() is also not safe here. | |
1279 | */ | |
1280 | while (!QTAILQ_EMPTY(&net_clients)) { | |
1281 | nc = QTAILQ_FIRST(&net_clients); | |
948ecf21 JW |
1282 | if (nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC) { |
1283 | qemu_del_nic(qemu_get_nic(nc)); | |
1284 | } else { | |
1285 | qemu_del_net_client(nc); | |
1286 | } | |
577c4af9 | 1287 | } |
ca77d85e MT |
1288 | |
1289 | qemu_del_vm_change_state_handler(net_change_state_entry); | |
63a01ef8 AL |
1290 | } |
1291 | ||
668680f7 | 1292 | void net_check_clients(void) |
63a01ef8 | 1293 | { |
35277d14 | 1294 | NetClientState *nc; |
48e2faf2 | 1295 | int i; |
63a01ef8 | 1296 | |
641f6eae PM |
1297 | /* Don't warn about the default network setup that you get if |
1298 | * no command line -net or -netdev options are specified. There | |
1299 | * are two cases that we would otherwise complain about: | |
1300 | * (1) board doesn't support a NIC but the implicit "-net nic" | |
1301 | * requested one | |
1302 | * (2) CONFIG_SLIRP not set, in which case the implicit "-net nic" | |
1303 | * sets up a nic that isn't connected to anything. | |
1304 | */ | |
1305 | if (default_net) { | |
1306 | return; | |
1307 | } | |
1308 | ||
81017645 | 1309 | net_hub_check_clients(); |
ac60cc18 | 1310 | |
35277d14 SH |
1311 | QTAILQ_FOREACH(nc, &net_clients, next) { |
1312 | if (!nc->peer) { | |
efe32fdd | 1313 | fprintf(stderr, "Warning: %s %s has no peer\n", |
35277d14 SH |
1314 | nc->info->type == NET_CLIENT_OPTIONS_KIND_NIC ? |
1315 | "nic" : "netdev", nc->name); | |
efe32fdd MA |
1316 | } |
1317 | } | |
48e2faf2 PM |
1318 | |
1319 | /* Check that all NICs requested via -net nic actually got created. | |
1320 | * NICs created via -device don't need to be checked here because | |
1321 | * they are always instantiated. | |
1322 | */ | |
1323 | for (i = 0; i < MAX_NICS; i++) { | |
1324 | NICInfo *nd = &nd_table[i]; | |
1325 | if (nd->used && !nd->instantiated) { | |
1326 | fprintf(stderr, "Warning: requested NIC (%s, model %s) " | |
1327 | "was not created (not supported by this machine?)\n", | |
1328 | nd->name ? nd->name : "anonymous", | |
1329 | nd->model ? nd->model : "unspecified"); | |
1330 | } | |
1331 | } | |
63a01ef8 | 1332 | } |
dc1c9fe8 | 1333 | |
28d0de7a | 1334 | static int net_init_client(void *dummy, QemuOpts *opts, Error **errp) |
dc1c9fe8 | 1335 | { |
4559a1db LC |
1336 | Error *local_err = NULL; |
1337 | ||
1338 | net_client_init(opts, 0, &local_err); | |
84d18f06 | 1339 | if (local_err) { |
12d0cc2d | 1340 | error_report_err(local_err); |
c1671a08 | 1341 | return -1; |
4559a1db LC |
1342 | } |
1343 | ||
c1671a08 | 1344 | return 0; |
f6b134ac MM |
1345 | } |
1346 | ||
28d0de7a | 1347 | static int net_init_netdev(void *dummy, QemuOpts *opts, Error **errp) |
f6b134ac | 1348 | { |
4559a1db LC |
1349 | Error *local_err = NULL; |
1350 | int ret; | |
1351 | ||
1352 | ret = net_client_init(opts, 1, &local_err); | |
84d18f06 | 1353 | if (local_err) { |
12d0cc2d | 1354 | error_report_err(local_err); |
4559a1db LC |
1355 | return -1; |
1356 | } | |
1357 | ||
1358 | return ret; | |
dc1c9fe8 MM |
1359 | } |
1360 | ||
1361 | int net_init_clients(void) | |
1362 | { | |
3329f07b GH |
1363 | QemuOptsList *net = qemu_find_opts("net"); |
1364 | ||
cb4522cc | 1365 | if (default_net) { |
dc1c9fe8 | 1366 | /* if no clients, we use a default config */ |
79087c78 | 1367 | qemu_opts_set(net, NULL, "type", "nic", &error_abort); |
dc1c9fe8 | 1368 | #ifdef CONFIG_SLIRP |
79087c78 | 1369 | qemu_opts_set(net, NULL, "type", "user", &error_abort); |
dc1c9fe8 MM |
1370 | #endif |
1371 | } | |
1372 | ||
ca77d85e MT |
1373 | net_change_state_entry = |
1374 | qemu_add_vm_change_state_handler(net_vm_change_state_handler, NULL); | |
1375 | ||
94878994 | 1376 | QTAILQ_INIT(&net_clients); |
5610c3aa | 1377 | |
28d0de7a MA |
1378 | if (qemu_opts_foreach(qemu_find_opts("netdev"), |
1379 | net_init_netdev, NULL, NULL)) { | |
f6b134ac | 1380 | return -1; |
a4c7367f | 1381 | } |
f6b134ac | 1382 | |
28d0de7a | 1383 | if (qemu_opts_foreach(net, net_init_client, NULL, NULL)) { |
dc1c9fe8 MM |
1384 | return -1; |
1385 | } | |
1386 | ||
dc1c9fe8 MM |
1387 | return 0; |
1388 | } | |
1389 | ||
7f161aae | 1390 | int net_client_parse(QemuOptsList *opts_list, const char *optarg) |
dc1c9fe8 | 1391 | { |
a3a766e7 | 1392 | #if defined(CONFIG_SLIRP) |
68ac40d2 MM |
1393 | int ret; |
1394 | if (net_slirp_parse_legacy(opts_list, optarg, &ret)) { | |
dc1c9fe8 MM |
1395 | return ret; |
1396 | } | |
a3a766e7 | 1397 | #endif |
68ac40d2 | 1398 | |
70b94331 | 1399 | if (!qemu_opts_parse_noisily(opts_list, optarg, true)) { |
dc1c9fe8 MM |
1400 | return -1; |
1401 | } | |
1402 | ||
cb4522cc | 1403 | default_net = 0; |
dc1c9fe8 MM |
1404 | return 0; |
1405 | } | |
7fc8d918 JW |
1406 | |
1407 | /* From FreeBSD */ | |
1408 | /* XXX: optimize */ | |
1409 | unsigned compute_mcast_idx(const uint8_t *ep) | |
1410 | { | |
1411 | uint32_t crc; | |
1412 | int carry, i, j; | |
1413 | uint8_t b; | |
1414 | ||
1415 | crc = 0xffffffff; | |
1416 | for (i = 0; i < 6; i++) { | |
1417 | b = *ep++; | |
1418 | for (j = 0; j < 8; j++) { | |
1419 | carry = ((crc & 0x80000000L) ? 1 : 0) ^ (b & 0x01); | |
1420 | crc <<= 1; | |
1421 | b >>= 1; | |
1422 | if (carry) { | |
1423 | crc = ((crc ^ POLYNOMIAL) | carry); | |
1424 | } | |
1425 | } | |
1426 | } | |
1427 | return crc >> 26; | |
1428 | } | |
4d454574 PB |
1429 | |
1430 | QemuOptsList qemu_netdev_opts = { | |
1431 | .name = "netdev", | |
1432 | .implied_opt_name = "type", | |
1433 | .head = QTAILQ_HEAD_INITIALIZER(qemu_netdev_opts.head), | |
1434 | .desc = { | |
1435 | /* | |
1436 | * no elements => accept any params | |
1437 | * validation will happen later | |
1438 | */ | |
1439 | { /* end of list */ } | |
1440 | }, | |
1441 | }; | |
1442 | ||
1443 | QemuOptsList qemu_net_opts = { | |
1444 | .name = "net", | |
1445 | .implied_opt_name = "type", | |
1446 | .head = QTAILQ_HEAD_INITIALIZER(qemu_net_opts.head), | |
1447 | .desc = { | |
1448 | /* | |
1449 | * no elements => accept any params | |
1450 | * validation will happen later | |
1451 | */ | |
1452 | { /* end of list */ } | |
1453 | }, | |
1454 | }; |