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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 | */ | |
e688df6b | 24 | |
2744d920 | 25 | #include "qemu/osdep.h" |
d40cdb10 | 26 | |
1422e32d | 27 | #include "net/net.h" |
fd9400b3 PB |
28 | #include "clients.h" |
29 | #include "hub.h" | |
1422e32d | 30 | #include "net/slirp.h" |
d60b20cf | 31 | #include "net/eth.h" |
fd9400b3 | 32 | #include "util.h" |
a245fc18 | 33 | |
83c9089e | 34 | #include "monitor/monitor.h" |
f348b6d1 | 35 | #include "qemu/help_option.h" |
9af23989 MA |
36 | #include "qapi/qapi-commands-net.h" |
37 | #include "qapi/qapi-visit-net.h" | |
452fcdbc | 38 | #include "qapi/qmp/qdict.h" |
cc7a8ea7 | 39 | #include "qapi/qmp/qerror.h" |
d49b6836 | 40 | #include "qemu/error-report.h" |
1de7afc9 | 41 | #include "qemu/sockets.h" |
f348b6d1 | 42 | #include "qemu/cutils.h" |
1de7afc9 | 43 | #include "qemu/config-file.h" |
75422b0d | 44 | #include "hw/qdev.h" |
1de7afc9 | 45 | #include "qemu/iov.h" |
6a1751b7 | 46 | #include "qemu/main-loop.h" |
922a01a0 | 47 | #include "qemu/option.h" |
e688df6b | 48 | #include "qapi/error.h" |
6687b79d | 49 | #include "qapi/opts-visitor.h" |
e1d64c08 | 50 | #include "sysemu/sysemu.h" |
559964a1 | 51 | #include "sysemu/qtest.h" |
fdccce45 | 52 | #include "net/filter.h" |
aa9156f4 | 53 | #include "qapi/string-output-visitor.h" |
511d2b14 | 54 | |
2944e4ec SW |
55 | /* Net bridge is currently not supported for W32. */ |
56 | #if !defined(_WIN32) | |
57 | # define CONFIG_NET_BRIDGE | |
58 | #endif | |
59 | ||
ca77d85e | 60 | static VMChangeStateEntry *net_change_state_entry; |
4e68f7a0 | 61 | static QTAILQ_HEAD(, NetClientState) net_clients; |
63a01ef8 AL |
62 | |
63 | /***********************************************************/ | |
64 | /* network device redirectors */ | |
65 | ||
63a01ef8 AL |
66 | static int get_str_sep(char *buf, int buf_size, const char **pp, int sep) |
67 | { | |
68 | const char *p, *p1; | |
69 | int len; | |
70 | p = *pp; | |
71 | p1 = strchr(p, sep); | |
72 | if (!p1) | |
73 | return -1; | |
74 | len = p1 - p; | |
75 | p1++; | |
76 | if (buf_size > 0) { | |
77 | if (len > buf_size - 1) | |
78 | len = buf_size - 1; | |
79 | memcpy(buf, p, len); | |
80 | buf[len] = '\0'; | |
81 | } | |
82 | *pp = p1; | |
83 | return 0; | |
84 | } | |
85 | ||
bcd4dfd6 MZ |
86 | int parse_host_port(struct sockaddr_in *saddr, const char *str, |
87 | Error **errp) | |
63a01ef8 AL |
88 | { |
89 | char buf[512]; | |
90 | struct hostent *he; | |
91 | const char *p, *r; | |
92 | int port; | |
93 | ||
94 | p = str; | |
bcd4dfd6 MZ |
95 | if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) { |
96 | error_setg(errp, "host address '%s' doesn't contain ':' " | |
97 | "separating host from port", str); | |
63a01ef8 | 98 | return -1; |
bcd4dfd6 | 99 | } |
63a01ef8 AL |
100 | saddr->sin_family = AF_INET; |
101 | if (buf[0] == '\0') { | |
102 | saddr->sin_addr.s_addr = 0; | |
103 | } else { | |
cd390083 | 104 | if (qemu_isdigit(buf[0])) { |
bcd4dfd6 MZ |
105 | if (!inet_aton(buf, &saddr->sin_addr)) { |
106 | error_setg(errp, "host address '%s' is not a valid " | |
107 | "IPv4 address", buf); | |
63a01ef8 | 108 | return -1; |
bcd4dfd6 | 109 | } |
63a01ef8 | 110 | } else { |
bcd4dfd6 MZ |
111 | he = gethostbyname(buf); |
112 | if (he == NULL) { | |
113 | error_setg(errp, "can't resolve host address '%s'", buf); | |
63a01ef8 | 114 | return - 1; |
bcd4dfd6 | 115 | } |
63a01ef8 AL |
116 | saddr->sin_addr = *(struct in_addr *)he->h_addr; |
117 | } | |
118 | } | |
119 | port = strtol(p, (char **)&r, 0); | |
bcd4dfd6 MZ |
120 | if (r == p) { |
121 | error_setg(errp, "port number '%s' is invalid", p); | |
63a01ef8 | 122 | return -1; |
bcd4dfd6 | 123 | } |
63a01ef8 AL |
124 | saddr->sin_port = htons(port); |
125 | return 0; | |
126 | } | |
127 | ||
890ee6ab SF |
128 | char *qemu_mac_strdup_printf(const uint8_t *macaddr) |
129 | { | |
130 | return g_strdup_printf("%.2x:%.2x:%.2x:%.2x:%.2x:%.2x", | |
131 | macaddr[0], macaddr[1], macaddr[2], | |
132 | macaddr[3], macaddr[4], macaddr[5]); | |
133 | } | |
134 | ||
35277d14 | 135 | void qemu_format_nic_info_str(NetClientState *nc, uint8_t macaddr[6]) |
7cb7434b | 136 | { |
35277d14 | 137 | snprintf(nc->info_str, sizeof(nc->info_str), |
4dda4063 | 138 | "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x", |
35277d14 | 139 | nc->model, |
7cb7434b AL |
140 | macaddr[0], macaddr[1], macaddr[2], |
141 | macaddr[3], macaddr[4], macaddr[5]); | |
142 | } | |
143 | ||
2bc22a58 SZ |
144 | static int mac_table[256] = {0}; |
145 | ||
146 | static void qemu_macaddr_set_used(MACAddr *macaddr) | |
147 | { | |
148 | int index; | |
149 | ||
150 | for (index = 0x56; index < 0xFF; index++) { | |
151 | if (macaddr->a[5] == index) { | |
152 | mac_table[index]++; | |
153 | } | |
154 | } | |
155 | } | |
156 | ||
157 | static void qemu_macaddr_set_free(MACAddr *macaddr) | |
158 | { | |
159 | int index; | |
160 | static const MACAddr base = { .a = { 0x52, 0x54, 0x00, 0x12, 0x34, 0 } }; | |
161 | ||
162 | if (memcmp(macaddr->a, &base.a, (sizeof(base.a) - 1)) != 0) { | |
163 | return; | |
164 | } | |
165 | for (index = 0x56; index < 0xFF; index++) { | |
166 | if (macaddr->a[5] == index) { | |
167 | mac_table[index]--; | |
168 | } | |
169 | } | |
170 | } | |
171 | ||
172 | static int qemu_macaddr_get_free(void) | |
173 | { | |
174 | int index; | |
175 | ||
176 | for (index = 0x56; index < 0xFF; index++) { | |
177 | if (mac_table[index] == 0) { | |
178 | return index; | |
179 | } | |
180 | } | |
181 | ||
182 | return -1; | |
183 | } | |
184 | ||
76d32cba GH |
185 | void qemu_macaddr_default_if_unset(MACAddr *macaddr) |
186 | { | |
76d32cba | 187 | static const MACAddr zero = { .a = { 0,0,0,0,0,0 } }; |
2bc22a58 SZ |
188 | static const MACAddr base = { .a = { 0x52, 0x54, 0x00, 0x12, 0x34, 0 } }; |
189 | ||
190 | if (memcmp(macaddr, &zero, sizeof(zero)) != 0) { | |
191 | if (memcmp(macaddr->a, &base.a, (sizeof(base.a) - 1)) != 0) { | |
192 | return; | |
193 | } else { | |
194 | qemu_macaddr_set_used(macaddr); | |
195 | return; | |
196 | } | |
197 | } | |
76d32cba | 198 | |
76d32cba GH |
199 | macaddr->a[0] = 0x52; |
200 | macaddr->a[1] = 0x54; | |
201 | macaddr->a[2] = 0x00; | |
202 | macaddr->a[3] = 0x12; | |
203 | macaddr->a[4] = 0x34; | |
2bc22a58 SZ |
204 | macaddr->a[5] = qemu_macaddr_get_free(); |
205 | qemu_macaddr_set_used(macaddr); | |
76d32cba GH |
206 | } |
207 | ||
d33d93b2 SH |
208 | /** |
209 | * Generate a name for net client | |
210 | * | |
c963530a | 211 | * Only net clients created with the legacy -net option and NICs need this. |
d33d93b2 | 212 | */ |
35277d14 | 213 | static char *assign_name(NetClientState *nc1, const char *model) |
676cff29 | 214 | { |
35277d14 | 215 | NetClientState *nc; |
676cff29 AL |
216 | int id = 0; |
217 | ||
35277d14 SH |
218 | QTAILQ_FOREACH(nc, &net_clients, next) { |
219 | if (nc == nc1) { | |
d33d93b2 | 220 | continue; |
5610c3aa | 221 | } |
c963530a | 222 | if (strcmp(nc->model, model) == 0) { |
53e51d85 MA |
223 | id++; |
224 | } | |
225 | } | |
226 | ||
4bf2c138 | 227 | return g_strdup_printf("%s.%d", model, id); |
676cff29 AL |
228 | } |
229 | ||
f7860455 JW |
230 | static void qemu_net_client_destructor(NetClientState *nc) |
231 | { | |
232 | g_free(nc); | |
233 | } | |
25c01bd1 JW |
234 | static ssize_t qemu_deliver_packet_iov(NetClientState *sender, |
235 | unsigned flags, | |
236 | const struct iovec *iov, | |
237 | int iovcnt, | |
238 | void *opaque); | |
f7860455 | 239 | |
18a1541a JW |
240 | static void qemu_net_client_setup(NetClientState *nc, |
241 | NetClientInfo *info, | |
242 | NetClientState *peer, | |
243 | const char *model, | |
f7860455 JW |
244 | const char *name, |
245 | NetClientDestructor *destructor) | |
63a01ef8 | 246 | { |
35277d14 SH |
247 | nc->info = info; |
248 | nc->model = g_strdup(model); | |
45460d1a | 249 | if (name) { |
35277d14 | 250 | nc->name = g_strdup(name); |
45460d1a | 251 | } else { |
35277d14 | 252 | nc->name = assign_name(nc, model); |
45460d1a | 253 | } |
5610c3aa | 254 | |
ab5f3f84 SH |
255 | if (peer) { |
256 | assert(!peer->peer); | |
35277d14 SH |
257 | nc->peer = peer; |
258 | peer->peer = nc; | |
d80b9fc6 | 259 | } |
35277d14 | 260 | QTAILQ_INSERT_TAIL(&net_clients, nc, next); |
63a01ef8 | 261 | |
3e033a46 | 262 | nc->incoming_queue = qemu_new_net_queue(qemu_deliver_packet_iov, nc); |
f7860455 | 263 | nc->destructor = destructor; |
fdccce45 | 264 | QTAILQ_INIT(&nc->filters); |
18a1541a JW |
265 | } |
266 | ||
267 | NetClientState *qemu_new_net_client(NetClientInfo *info, | |
268 | NetClientState *peer, | |
269 | const char *model, | |
270 | const char *name) | |
271 | { | |
272 | NetClientState *nc; | |
273 | ||
274 | assert(info->size >= sizeof(NetClientState)); | |
275 | ||
276 | nc = g_malloc0(info->size); | |
f7860455 JW |
277 | qemu_net_client_setup(nc, info, peer, model, name, |
278 | qemu_net_client_destructor); | |
18a1541a | 279 | |
35277d14 | 280 | return nc; |
63a01ef8 AL |
281 | } |
282 | ||
ebef2c09 MM |
283 | NICState *qemu_new_nic(NetClientInfo *info, |
284 | NICConf *conf, | |
285 | const char *model, | |
286 | const char *name, | |
287 | void *opaque) | |
288 | { | |
1ceef9f2 | 289 | NetClientState **peers = conf->peers.ncs; |
ebef2c09 | 290 | NICState *nic; |
575a1c0e | 291 | int i, queues = MAX(1, conf->peers.queues); |
ebef2c09 | 292 | |
f394b2e2 | 293 | assert(info->type == NET_CLIENT_DRIVER_NIC); |
ebef2c09 MM |
294 | assert(info->size >= sizeof(NICState)); |
295 | ||
f6b26cf2 JW |
296 | nic = g_malloc0(info->size + sizeof(NetClientState) * queues); |
297 | nic->ncs = (void *)nic + info->size; | |
ebef2c09 MM |
298 | nic->conf = conf; |
299 | nic->opaque = opaque; | |
300 | ||
f6b26cf2 JW |
301 | for (i = 0; i < queues; i++) { |
302 | qemu_net_client_setup(&nic->ncs[i], info, peers[i], model, name, | |
1ceef9f2 JW |
303 | NULL); |
304 | nic->ncs[i].queue_index = i; | |
305 | } | |
306 | ||
ebef2c09 MM |
307 | return nic; |
308 | } | |
309 | ||
1ceef9f2 JW |
310 | NetClientState *qemu_get_subqueue(NICState *nic, int queue_index) |
311 | { | |
f6b26cf2 | 312 | return nic->ncs + queue_index; |
1ceef9f2 JW |
313 | } |
314 | ||
b356f76d JW |
315 | NetClientState *qemu_get_queue(NICState *nic) |
316 | { | |
1ceef9f2 | 317 | return qemu_get_subqueue(nic, 0); |
b356f76d JW |
318 | } |
319 | ||
cc1f0f45 JW |
320 | NICState *qemu_get_nic(NetClientState *nc) |
321 | { | |
1ceef9f2 JW |
322 | NetClientState *nc0 = nc - nc->queue_index; |
323 | ||
f6b26cf2 | 324 | return (NICState *)((void *)nc0 - nc->info->size); |
cc1f0f45 JW |
325 | } |
326 | ||
327 | void *qemu_get_nic_opaque(NetClientState *nc) | |
328 | { | |
329 | NICState *nic = qemu_get_nic(nc); | |
330 | ||
331 | return nic->opaque; | |
332 | } | |
333 | ||
b20c6b9e | 334 | static void qemu_cleanup_net_client(NetClientState *nc) |
63a01ef8 | 335 | { |
35277d14 | 336 | QTAILQ_REMOVE(&net_clients, nc, next); |
63a01ef8 | 337 | |
cc2a9043 AF |
338 | if (nc->info->cleanup) { |
339 | nc->info->cleanup(nc); | |
340 | } | |
a083a89d | 341 | } |
5610c3aa | 342 | |
b20c6b9e | 343 | static void qemu_free_net_client(NetClientState *nc) |
a083a89d | 344 | { |
067404be JK |
345 | if (nc->incoming_queue) { |
346 | qemu_del_net_queue(nc->incoming_queue); | |
a005d073 | 347 | } |
35277d14 SH |
348 | if (nc->peer) { |
349 | nc->peer->peer = NULL; | |
a083a89d | 350 | } |
35277d14 SH |
351 | g_free(nc->name); |
352 | g_free(nc->model); | |
f7860455 JW |
353 | if (nc->destructor) { |
354 | nc->destructor(nc); | |
355 | } | |
63a01ef8 AL |
356 | } |
357 | ||
b20c6b9e | 358 | void qemu_del_net_client(NetClientState *nc) |
a083a89d | 359 | { |
1ceef9f2 JW |
360 | NetClientState *ncs[MAX_QUEUE_NUM]; |
361 | int queues, i; | |
fdccce45 | 362 | NetFilterState *nf, *next; |
1ceef9f2 | 363 | |
f394b2e2 | 364 | assert(nc->info->type != NET_CLIENT_DRIVER_NIC); |
7fb43911 | 365 | |
1ceef9f2 JW |
366 | /* If the NetClientState belongs to a multiqueue backend, we will change all |
367 | * other NetClientStates also. | |
368 | */ | |
369 | queues = qemu_find_net_clients_except(nc->name, ncs, | |
f394b2e2 | 370 | NET_CLIENT_DRIVER_NIC, |
1ceef9f2 JW |
371 | MAX_QUEUE_NUM); |
372 | assert(queues != 0); | |
373 | ||
fdccce45 YH |
374 | QTAILQ_FOREACH_SAFE(nf, &nc->filters, next, next) { |
375 | object_unparent(OBJECT(nf)); | |
376 | } | |
377 | ||
a083a89d | 378 | /* If there is a peer NIC, delete and cleanup client, but do not free. */ |
f394b2e2 | 379 | if (nc->peer && nc->peer->info->type == NET_CLIENT_DRIVER_NIC) { |
cc1f0f45 | 380 | NICState *nic = qemu_get_nic(nc->peer); |
a083a89d MT |
381 | if (nic->peer_deleted) { |
382 | return; | |
383 | } | |
384 | nic->peer_deleted = true; | |
1ceef9f2 JW |
385 | |
386 | for (i = 0; i < queues; i++) { | |
387 | ncs[i]->peer->link_down = true; | |
388 | } | |
389 | ||
35277d14 SH |
390 | if (nc->peer->info->link_status_changed) { |
391 | nc->peer->info->link_status_changed(nc->peer); | |
a083a89d | 392 | } |
1ceef9f2 JW |
393 | |
394 | for (i = 0; i < queues; i++) { | |
395 | qemu_cleanup_net_client(ncs[i]); | |
396 | } | |
397 | ||
a083a89d MT |
398 | return; |
399 | } | |
400 | ||
1ceef9f2 JW |
401 | for (i = 0; i < queues; i++) { |
402 | qemu_cleanup_net_client(ncs[i]); | |
403 | qemu_free_net_client(ncs[i]); | |
404 | } | |
948ecf21 JW |
405 | } |
406 | ||
407 | void qemu_del_nic(NICState *nic) | |
408 | { | |
575a1c0e | 409 | int i, queues = MAX(nic->conf->peers.queues, 1); |
1ceef9f2 | 410 | |
2bc22a58 SZ |
411 | qemu_macaddr_set_free(&nic->conf->macaddr); |
412 | ||
a083a89d | 413 | /* If this is a peer NIC and peer has already been deleted, free it now. */ |
1ceef9f2 JW |
414 | if (nic->peer_deleted) { |
415 | for (i = 0; i < queues; i++) { | |
416 | qemu_free_net_client(qemu_get_subqueue(nic, i)->peer); | |
1a609520 JK |
417 | } |
418 | } | |
1a609520 | 419 | |
1ceef9f2 JW |
420 | for (i = queues - 1; i >= 0; i--) { |
421 | NetClientState *nc = qemu_get_subqueue(nic, i); | |
422 | ||
423 | qemu_cleanup_net_client(nc); | |
424 | qemu_free_net_client(nc); | |
425 | } | |
f6b26cf2 JW |
426 | |
427 | g_free(nic); | |
1a609520 JK |
428 | } |
429 | ||
57f9ef17 MM |
430 | void qemu_foreach_nic(qemu_nic_foreach func, void *opaque) |
431 | { | |
4e68f7a0 | 432 | NetClientState *nc; |
57f9ef17 | 433 | |
94878994 | 434 | QTAILQ_FOREACH(nc, &net_clients, next) { |
f394b2e2 | 435 | if (nc->info->type == NET_CLIENT_DRIVER_NIC) { |
1ceef9f2 JW |
436 | if (nc->queue_index == 0) { |
437 | func(qemu_get_nic(nc), opaque); | |
438 | } | |
57f9ef17 MM |
439 | } |
440 | } | |
57f9ef17 MM |
441 | } |
442 | ||
d6085e3a | 443 | bool qemu_has_ufo(NetClientState *nc) |
1f55ac45 | 444 | { |
d6085e3a | 445 | if (!nc || !nc->info->has_ufo) { |
1f55ac45 VM |
446 | return false; |
447 | } | |
448 | ||
d6085e3a | 449 | return nc->info->has_ufo(nc); |
1f55ac45 VM |
450 | } |
451 | ||
d6085e3a | 452 | bool qemu_has_vnet_hdr(NetClientState *nc) |
1f55ac45 | 453 | { |
d6085e3a | 454 | if (!nc || !nc->info->has_vnet_hdr) { |
1f55ac45 VM |
455 | return false; |
456 | } | |
457 | ||
d6085e3a | 458 | return nc->info->has_vnet_hdr(nc); |
1f55ac45 VM |
459 | } |
460 | ||
d6085e3a | 461 | bool qemu_has_vnet_hdr_len(NetClientState *nc, int len) |
1f55ac45 | 462 | { |
d6085e3a | 463 | if (!nc || !nc->info->has_vnet_hdr_len) { |
1f55ac45 VM |
464 | return false; |
465 | } | |
466 | ||
d6085e3a | 467 | return nc->info->has_vnet_hdr_len(nc, len); |
1f55ac45 VM |
468 | } |
469 | ||
d6085e3a | 470 | void qemu_using_vnet_hdr(NetClientState *nc, bool enable) |
1f55ac45 | 471 | { |
d6085e3a | 472 | if (!nc || !nc->info->using_vnet_hdr) { |
1f55ac45 VM |
473 | return; |
474 | } | |
475 | ||
d6085e3a | 476 | nc->info->using_vnet_hdr(nc, enable); |
1f55ac45 VM |
477 | } |
478 | ||
d6085e3a | 479 | void qemu_set_offload(NetClientState *nc, int csum, int tso4, int tso6, |
1f55ac45 VM |
480 | int ecn, int ufo) |
481 | { | |
d6085e3a | 482 | if (!nc || !nc->info->set_offload) { |
1f55ac45 VM |
483 | return; |
484 | } | |
485 | ||
d6085e3a | 486 | nc->info->set_offload(nc, csum, tso4, tso6, ecn, ufo); |
1f55ac45 VM |
487 | } |
488 | ||
d6085e3a | 489 | void qemu_set_vnet_hdr_len(NetClientState *nc, int len) |
1f55ac45 | 490 | { |
d6085e3a | 491 | if (!nc || !nc->info->set_vnet_hdr_len) { |
1f55ac45 VM |
492 | return; |
493 | } | |
494 | ||
d6b732e9 | 495 | nc->vnet_hdr_len = len; |
d6085e3a | 496 | nc->info->set_vnet_hdr_len(nc, len); |
1f55ac45 VM |
497 | } |
498 | ||
c80cd6bb GK |
499 | int qemu_set_vnet_le(NetClientState *nc, bool is_le) |
500 | { | |
052bd52f | 501 | #ifdef HOST_WORDS_BIGENDIAN |
c80cd6bb GK |
502 | if (!nc || !nc->info->set_vnet_le) { |
503 | return -ENOSYS; | |
504 | } | |
505 | ||
506 | return nc->info->set_vnet_le(nc, is_le); | |
052bd52f MT |
507 | #else |
508 | return 0; | |
509 | #endif | |
c80cd6bb GK |
510 | } |
511 | ||
512 | int qemu_set_vnet_be(NetClientState *nc, bool is_be) | |
513 | { | |
052bd52f MT |
514 | #ifdef HOST_WORDS_BIGENDIAN |
515 | return 0; | |
516 | #else | |
c80cd6bb GK |
517 | if (!nc || !nc->info->set_vnet_be) { |
518 | return -ENOSYS; | |
519 | } | |
520 | ||
521 | return nc->info->set_vnet_be(nc, is_be); | |
052bd52f | 522 | #endif |
c80cd6bb GK |
523 | } |
524 | ||
4e68f7a0 | 525 | int qemu_can_send_packet(NetClientState *sender) |
63a01ef8 | 526 | { |
e1d64c08 HZ |
527 | int vm_running = runstate_is_running(); |
528 | ||
529 | if (!vm_running) { | |
530 | return 0; | |
531 | } | |
532 | ||
a005d073 | 533 | if (!sender->peer) { |
d80b9fc6 MM |
534 | return 1; |
535 | } | |
536 | ||
a005d073 SH |
537 | if (sender->peer->receive_disabled) { |
538 | return 0; | |
539 | } else if (sender->peer->info->can_receive && | |
540 | !sender->peer->info->can_receive(sender->peer)) { | |
541 | return 0; | |
63a01ef8 | 542 | } |
60c07d93 | 543 | return 1; |
63a01ef8 AL |
544 | } |
545 | ||
e64c770d YH |
546 | static ssize_t filter_receive_iov(NetClientState *nc, |
547 | NetFilterDirection direction, | |
548 | NetClientState *sender, | |
549 | unsigned flags, | |
550 | const struct iovec *iov, | |
551 | int iovcnt, | |
552 | NetPacketSent *sent_cb) | |
553 | { | |
554 | ssize_t ret = 0; | |
555 | NetFilterState *nf = NULL; | |
556 | ||
25aaadf0 LZ |
557 | if (direction == NET_FILTER_DIRECTION_TX) { |
558 | QTAILQ_FOREACH(nf, &nc->filters, next) { | |
559 | ret = qemu_netfilter_receive(nf, direction, sender, flags, iov, | |
560 | iovcnt, sent_cb); | |
561 | if (ret) { | |
562 | return ret; | |
563 | } | |
564 | } | |
565 | } else { | |
eae3eb3e | 566 | QTAILQ_FOREACH_REVERSE(nf, &nc->filters, next) { |
25aaadf0 LZ |
567 | ret = qemu_netfilter_receive(nf, direction, sender, flags, iov, |
568 | iovcnt, sent_cb); | |
569 | if (ret) { | |
570 | return ret; | |
571 | } | |
e64c770d YH |
572 | } |
573 | } | |
574 | ||
575 | return ret; | |
576 | } | |
577 | ||
578 | static ssize_t filter_receive(NetClientState *nc, | |
579 | NetFilterDirection direction, | |
580 | NetClientState *sender, | |
581 | unsigned flags, | |
582 | const uint8_t *data, | |
583 | size_t size, | |
584 | NetPacketSent *sent_cb) | |
585 | { | |
586 | struct iovec iov = { | |
587 | .iov_base = (void *)data, | |
588 | .iov_len = size | |
589 | }; | |
590 | ||
591 | return filter_receive_iov(nc, direction, sender, flags, &iov, 1, sent_cb); | |
592 | } | |
593 | ||
35277d14 | 594 | void qemu_purge_queued_packets(NetClientState *nc) |
8cad5516 | 595 | { |
35277d14 | 596 | if (!nc->peer) { |
d80b9fc6 | 597 | return; |
9a6ecb30 | 598 | } |
d80b9fc6 | 599 | |
067404be | 600 | qemu_net_queue_purge(nc->peer->incoming_queue, nc); |
8cad5516 MM |
601 | } |
602 | ||
ca77d85e | 603 | void qemu_flush_or_purge_queued_packets(NetClientState *nc, bool purge) |
e94667b9 | 604 | { |
35277d14 | 605 | nc->receive_disabled = 0; |
9a6ecb30 | 606 | |
f394b2e2 | 607 | if (nc->peer && nc->peer->info->type == NET_CLIENT_DRIVER_HUBPORT) { |
199ee608 LR |
608 | if (net_hub_flush(nc->peer)) { |
609 | qemu_notify_event(); | |
610 | } | |
199ee608 | 611 | } |
067404be | 612 | if (qemu_net_queue_flush(nc->incoming_queue)) { |
987a9b48 PB |
613 | /* We emptied the queue successfully, signal to the IO thread to repoll |
614 | * the file descriptor (for tap, for example). | |
615 | */ | |
616 | qemu_notify_event(); | |
ca77d85e MT |
617 | } else if (purge) { |
618 | /* Unable to empty the queue, purge remaining packets */ | |
619 | qemu_net_queue_purge(nc->incoming_queue, nc); | |
987a9b48 | 620 | } |
e94667b9 MM |
621 | } |
622 | ||
ca77d85e MT |
623 | void qemu_flush_queued_packets(NetClientState *nc) |
624 | { | |
625 | qemu_flush_or_purge_queued_packets(nc, false); | |
626 | } | |
627 | ||
4e68f7a0 | 628 | static ssize_t qemu_send_packet_async_with_flags(NetClientState *sender, |
ca77d175 MM |
629 | unsigned flags, |
630 | const uint8_t *buf, int size, | |
631 | NetPacketSent *sent_cb) | |
764a4d1d | 632 | { |
9a6ecb30 | 633 | NetQueue *queue; |
e64c770d | 634 | int ret; |
436e5e53 | 635 | |
63a01ef8 | 636 | #ifdef DEBUG_NET |
d80b9fc6 | 637 | printf("qemu_send_packet_async:\n"); |
a1555559 | 638 | qemu_hexdump((const char *)buf, stdout, "net", size); |
63a01ef8 | 639 | #endif |
f3b6c7fc | 640 | |
a005d073 | 641 | if (sender->link_down || !sender->peer) { |
9a6ecb30 MM |
642 | return size; |
643 | } | |
644 | ||
e64c770d YH |
645 | /* Let filters handle the packet first */ |
646 | ret = filter_receive(sender, NET_FILTER_DIRECTION_TX, | |
647 | sender, flags, buf, size, sent_cb); | |
648 | if (ret) { | |
649 | return ret; | |
650 | } | |
651 | ||
652 | ret = filter_receive(sender->peer, NET_FILTER_DIRECTION_RX, | |
653 | sender, flags, buf, size, sent_cb); | |
654 | if (ret) { | |
655 | return ret; | |
656 | } | |
657 | ||
067404be | 658 | queue = sender->peer->incoming_queue; |
9a6ecb30 | 659 | |
ca77d175 MM |
660 | return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb); |
661 | } | |
662 | ||
4e68f7a0 | 663 | ssize_t qemu_send_packet_async(NetClientState *sender, |
ca77d175 MM |
664 | const uint8_t *buf, int size, |
665 | NetPacketSent *sent_cb) | |
666 | { | |
667 | return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE, | |
668 | buf, size, sent_cb); | |
f3b6c7fc MM |
669 | } |
670 | ||
625a526b | 671 | ssize_t qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size) |
f3b6c7fc | 672 | { |
625a526b | 673 | return qemu_send_packet_async(nc, buf, size, NULL); |
63a01ef8 AL |
674 | } |
675 | ||
35277d14 | 676 | ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size) |
ca77d175 | 677 | { |
35277d14 | 678 | return qemu_send_packet_async_with_flags(nc, QEMU_NET_PACKET_FLAG_RAW, |
ca77d175 MM |
679 | buf, size, NULL); |
680 | } | |
681 | ||
35277d14 | 682 | static ssize_t nc_sendv_compat(NetClientState *nc, const struct iovec *iov, |
fefe2a78 | 683 | int iovcnt, unsigned flags) |
fbe78f4f | 684 | { |
74044c8f | 685 | uint8_t *buf = NULL; |
fefe2a78 | 686 | uint8_t *buffer; |
ce053661 | 687 | size_t offset; |
74044c8f | 688 | ssize_t ret; |
fbe78f4f | 689 | |
fefe2a78 YH |
690 | if (iovcnt == 1) { |
691 | buffer = iov[0].iov_base; | |
692 | offset = iov[0].iov_len; | |
693 | } else { | |
47f9f158 PL |
694 | offset = iov_size(iov, iovcnt); |
695 | if (offset > NET_BUFSIZE) { | |
696 | return -1; | |
697 | } | |
698 | buf = g_malloc(offset); | |
fefe2a78 | 699 | buffer = buf; |
47f9f158 | 700 | offset = iov_to_buf(iov, iovcnt, 0, buf, offset); |
fefe2a78 | 701 | } |
fbe78f4f | 702 | |
fefe2a78 | 703 | if (flags & QEMU_NET_PACKET_FLAG_RAW && nc->info->receive_raw) { |
74044c8f | 704 | ret = nc->info->receive_raw(nc, buffer, offset); |
fefe2a78 | 705 | } else { |
74044c8f | 706 | ret = nc->info->receive(nc, buffer, offset); |
fefe2a78 | 707 | } |
74044c8f PD |
708 | |
709 | g_free(buf); | |
710 | return ret; | |
fbe78f4f AL |
711 | } |
712 | ||
25c01bd1 JW |
713 | static ssize_t qemu_deliver_packet_iov(NetClientState *sender, |
714 | unsigned flags, | |
715 | const struct iovec *iov, | |
716 | int iovcnt, | |
717 | void *opaque) | |
9a6ecb30 | 718 | { |
35277d14 | 719 | NetClientState *nc = opaque; |
c67f5dc1 | 720 | int ret; |
9a6ecb30 | 721 | |
1592a994 | 722 | |
35277d14 | 723 | if (nc->link_down) { |
25c01bd1 | 724 | return iov_size(iov, iovcnt); |
9a6ecb30 MM |
725 | } |
726 | ||
c67f5dc1 SH |
727 | if (nc->receive_disabled) { |
728 | return 0; | |
729 | } | |
730 | ||
ca1ee3d6 | 731 | if (nc->info->receive_iov && !(flags & QEMU_NET_PACKET_FLAG_RAW)) { |
c67f5dc1 | 732 | ret = nc->info->receive_iov(nc, iov, iovcnt); |
9a6ecb30 | 733 | } else { |
fefe2a78 | 734 | ret = nc_sendv_compat(nc, iov, iovcnt, flags); |
c67f5dc1 SH |
735 | } |
736 | ||
737 | if (ret == 0) { | |
738 | nc->receive_disabled = 1; | |
e94667b9 | 739 | } |
c67f5dc1 SH |
740 | |
741 | return ret; | |
e94667b9 MM |
742 | } |
743 | ||
4e68f7a0 | 744 | ssize_t qemu_sendv_packet_async(NetClientState *sender, |
f3b6c7fc MM |
745 | const struct iovec *iov, int iovcnt, |
746 | NetPacketSent *sent_cb) | |
e94667b9 | 747 | { |
9a6ecb30 | 748 | NetQueue *queue; |
25c01bd1 | 749 | size_t size = iov_size(iov, iovcnt); |
e64c770d | 750 | int ret; |
9a6ecb30 | 751 | |
25c01bd1 JW |
752 | if (size > NET_BUFSIZE) { |
753 | return size; | |
754 | } | |
755 | ||
a005d073 | 756 | if (sender->link_down || !sender->peer) { |
25c01bd1 | 757 | return size; |
e94667b9 MM |
758 | } |
759 | ||
e64c770d YH |
760 | /* Let filters handle the packet first */ |
761 | ret = filter_receive_iov(sender, NET_FILTER_DIRECTION_TX, sender, | |
762 | QEMU_NET_PACKET_FLAG_NONE, iov, iovcnt, sent_cb); | |
763 | if (ret) { | |
764 | return ret; | |
765 | } | |
766 | ||
767 | ret = filter_receive_iov(sender->peer, NET_FILTER_DIRECTION_RX, sender, | |
768 | QEMU_NET_PACKET_FLAG_NONE, iov, iovcnt, sent_cb); | |
769 | if (ret) { | |
770 | return ret; | |
771 | } | |
772 | ||
067404be | 773 | queue = sender->peer->incoming_queue; |
9a6ecb30 | 774 | |
c0b8e49c MM |
775 | return qemu_net_queue_send_iov(queue, sender, |
776 | QEMU_NET_PACKET_FLAG_NONE, | |
777 | iov, iovcnt, sent_cb); | |
fbe78f4f AL |
778 | } |
779 | ||
f3b6c7fc | 780 | ssize_t |
35277d14 | 781 | qemu_sendv_packet(NetClientState *nc, const struct iovec *iov, int iovcnt) |
f3b6c7fc | 782 | { |
35277d14 | 783 | return qemu_sendv_packet_async(nc, iov, iovcnt, NULL); |
63a01ef8 AL |
784 | } |
785 | ||
4e68f7a0 | 786 | NetClientState *qemu_find_netdev(const char *id) |
5869c4d5 | 787 | { |
35277d14 | 788 | NetClientState *nc; |
5869c4d5 | 789 | |
35277d14 | 790 | QTAILQ_FOREACH(nc, &net_clients, next) { |
f394b2e2 | 791 | if (nc->info->type == NET_CLIENT_DRIVER_NIC) |
85dde9a9 | 792 | continue; |
35277d14 SH |
793 | if (!strcmp(nc->name, id)) { |
794 | return nc; | |
5869c4d5 MM |
795 | } |
796 | } | |
797 | ||
798 | return NULL; | |
799 | } | |
800 | ||
6c51ae73 | 801 | int qemu_find_net_clients_except(const char *id, NetClientState **ncs, |
f394b2e2 | 802 | NetClientDriver type, int max) |
6c51ae73 JW |
803 | { |
804 | NetClientState *nc; | |
805 | int ret = 0; | |
806 | ||
807 | QTAILQ_FOREACH(nc, &net_clients, next) { | |
808 | if (nc->info->type == type) { | |
809 | continue; | |
810 | } | |
40d19394 | 811 | if (!id || !strcmp(nc->name, id)) { |
6c51ae73 JW |
812 | if (ret < max) { |
813 | ncs[ret] = nc; | |
814 | } | |
815 | ret++; | |
816 | } | |
817 | } | |
818 | ||
819 | return ret; | |
820 | } | |
821 | ||
7697079b AL |
822 | static int nic_get_free_idx(void) |
823 | { | |
824 | int index; | |
825 | ||
826 | for (index = 0; index < MAX_NICS; index++) | |
827 | if (!nd_table[index].used) | |
828 | return index; | |
829 | return -1; | |
830 | } | |
831 | ||
07caea31 MA |
832 | int qemu_show_nic_models(const char *arg, const char *const *models) |
833 | { | |
834 | int i; | |
835 | ||
c8057f95 | 836 | if (!arg || !is_help_option(arg)) { |
07caea31 | 837 | return 0; |
c8057f95 | 838 | } |
07caea31 | 839 | |
7b71e03a TH |
840 | printf("Supported NIC models:\n"); |
841 | for (i = 0 ; models[i]; i++) { | |
842 | printf("%s\n", models[i]); | |
843 | } | |
07caea31 MA |
844 | return 1; |
845 | } | |
846 | ||
d07f22c5 AL |
847 | void qemu_check_nic_model(NICInfo *nd, const char *model) |
848 | { | |
849 | const char *models[2]; | |
850 | ||
851 | models[0] = model; | |
852 | models[1] = NULL; | |
853 | ||
07caea31 MA |
854 | if (qemu_show_nic_models(nd->model, models)) |
855 | exit(0); | |
856 | if (qemu_find_nic_model(nd, models, model) < 0) | |
857 | exit(1); | |
d07f22c5 AL |
858 | } |
859 | ||
07caea31 MA |
860 | int qemu_find_nic_model(NICInfo *nd, const char * const *models, |
861 | const char *default_model) | |
d07f22c5 | 862 | { |
07caea31 | 863 | int i; |
d07f22c5 AL |
864 | |
865 | if (!nd->model) | |
7267c094 | 866 | nd->model = g_strdup(default_model); |
d07f22c5 | 867 | |
07caea31 MA |
868 | for (i = 0 ; models[i]; i++) { |
869 | if (strcmp(nd->model, models[i]) == 0) | |
870 | return i; | |
d07f22c5 AL |
871 | } |
872 | ||
6daf194d | 873 | error_report("Unsupported NIC model: %s", nd->model); |
07caea31 | 874 | return -1; |
d07f22c5 AL |
875 | } |
876 | ||
cebea510 | 877 | static int net_init_nic(const Netdev *netdev, const char *name, |
a30ecde6 | 878 | NetClientState *peer, Error **errp) |
f83c6e10 MM |
879 | { |
880 | int idx; | |
881 | NICInfo *nd; | |
2456f36f LE |
882 | const NetLegacyNicOptions *nic; |
883 | ||
f394b2e2 EB |
884 | assert(netdev->type == NET_CLIENT_DRIVER_NIC); |
885 | nic = &netdev->u.nic; | |
f83c6e10 MM |
886 | |
887 | idx = nic_get_free_idx(); | |
888 | if (idx == -1 || nb_nics >= MAX_NICS) { | |
66308868 | 889 | error_setg(errp, "too many NICs"); |
f83c6e10 MM |
890 | return -1; |
891 | } | |
892 | ||
893 | nd = &nd_table[idx]; | |
894 | ||
895 | memset(nd, 0, sizeof(*nd)); | |
896 | ||
2456f36f LE |
897 | if (nic->has_netdev) { |
898 | nd->netdev = qemu_find_netdev(nic->netdev); | |
5869c4d5 | 899 | if (!nd->netdev) { |
66308868 | 900 | error_setg(errp, "netdev '%s' not found", nic->netdev); |
5869c4d5 MM |
901 | return -1; |
902 | } | |
903 | } else { | |
d33d93b2 SH |
904 | assert(peer); |
905 | nd->netdev = peer; | |
5869c4d5 | 906 | } |
c64f50d1 | 907 | nd->name = g_strdup(name); |
2456f36f LE |
908 | if (nic->has_model) { |
909 | nd->model = g_strdup(nic->model); | |
f83c6e10 | 910 | } |
2456f36f LE |
911 | if (nic->has_addr) { |
912 | nd->devaddr = g_strdup(nic->addr); | |
f83c6e10 MM |
913 | } |
914 | ||
2456f36f LE |
915 | if (nic->has_macaddr && |
916 | net_parse_macaddr(nd->macaddr.a, nic->macaddr) < 0) { | |
66308868 | 917 | error_setg(errp, "invalid syntax for ethernet address"); |
f83c6e10 MM |
918 | return -1; |
919 | } | |
d60b20cf DK |
920 | if (nic->has_macaddr && |
921 | is_multicast_ether_addr(nd->macaddr.a)) { | |
66308868 MA |
922 | error_setg(errp, |
923 | "NIC cannot have multicast MAC address (odd 1st byte)"); | |
d60b20cf DK |
924 | return -1; |
925 | } | |
6eed1856 | 926 | qemu_macaddr_default_if_unset(&nd->macaddr); |
f83c6e10 | 927 | |
2456f36f LE |
928 | if (nic->has_vectors) { |
929 | if (nic->vectors > 0x7ffffff) { | |
66308868 | 930 | error_setg(errp, "invalid # of vectors: %"PRIu32, nic->vectors); |
2456f36f LE |
931 | return -1; |
932 | } | |
933 | nd->nvectors = nic->vectors; | |
934 | } else { | |
935 | nd->nvectors = DEV_NVECTORS_UNSPECIFIED; | |
f83c6e10 MM |
936 | } |
937 | ||
938 | nd->used = 1; | |
f83c6e10 MM |
939 | nb_nics++; |
940 | ||
941 | return idx; | |
942 | } | |
943 | ||
6687b79d | 944 | |
f394b2e2 | 945 | static int (* const net_client_init_fun[NET_CLIENT_DRIVER__MAX])( |
cebea510 | 946 | const Netdev *netdev, |
6687b79d | 947 | const char *name, |
a30ecde6 | 948 | NetClientState *peer, Error **errp) = { |
f394b2e2 | 949 | [NET_CLIENT_DRIVER_NIC] = net_init_nic, |
ec302ffd | 950 | #ifdef CONFIG_SLIRP |
f394b2e2 | 951 | [NET_CLIENT_DRIVER_USER] = net_init_slirp, |
2944e4ec | 952 | #endif |
f394b2e2 EB |
953 | [NET_CLIENT_DRIVER_TAP] = net_init_tap, |
954 | [NET_CLIENT_DRIVER_SOCKET] = net_init_socket, | |
dd51058d | 955 | #ifdef CONFIG_VDE |
f394b2e2 | 956 | [NET_CLIENT_DRIVER_VDE] = net_init_vde, |
58952137 VM |
957 | #endif |
958 | #ifdef CONFIG_NETMAP | |
f394b2e2 | 959 | [NET_CLIENT_DRIVER_NETMAP] = net_init_netmap, |
dd51058d | 960 | #endif |
2944e4ec | 961 | #ifdef CONFIG_NET_BRIDGE |
f394b2e2 | 962 | [NET_CLIENT_DRIVER_BRIDGE] = net_init_bridge, |
6687b79d | 963 | #endif |
f394b2e2 | 964 | [NET_CLIENT_DRIVER_HUBPORT] = net_init_hubport, |
56f41de7 | 965 | #ifdef CONFIG_VHOST_NET_USER |
f394b2e2 | 966 | [NET_CLIENT_DRIVER_VHOST_USER] = net_init_vhost_user, |
03ce5744 | 967 | #endif |
015a33bd | 968 | #ifdef CONFIG_L2TPV3 |
f394b2e2 | 969 | [NET_CLIENT_DRIVER_L2TPV3] = net_init_l2tpv3, |
3fb69aa1 | 970 | #endif |
f83c6e10 MM |
971 | }; |
972 | ||
6687b79d | 973 | |
0e55c381 | 974 | static int net_client_init1(const void *object, bool is_netdev, Error **errp) |
f83c6e10 | 975 | { |
cebea510 KZ |
976 | Netdev legacy = {0}; |
977 | const Netdev *netdev; | |
6d952ebe | 978 | const char *name; |
4ef0defb | 979 | NetClientState *peer = NULL; |
f83c6e10 | 980 | |
5294e2c7 | 981 | if (is_netdev) { |
cebea510 | 982 | netdev = object; |
1e81aba5 | 983 | name = netdev->id; |
6687b79d | 984 | |
857d2087 | 985 | if (netdev->type == NET_CLIENT_DRIVER_NIC || |
f394b2e2 | 986 | !net_client_init_fun[netdev->type]) { |
c6bd8c70 MA |
987 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "type", |
988 | "a netdev backend type"); | |
f6b134ac MM |
989 | return -1; |
990 | } | |
6687b79d | 991 | } else { |
1e81aba5 | 992 | const NetLegacy *net = object; |
f394b2e2 | 993 | const NetLegacyOptions *opts = net->opts; |
cebea510 | 994 | legacy.id = net->id; |
cebea510 | 995 | netdev = &legacy; |
6687b79d | 996 | /* missing optional values have been initialized to "all bits zero" */ |
1e81aba5 | 997 | name = net->has_id ? net->id : net->name; |
d139e9a6 | 998 | |
101625a4 TH |
999 | if (net->has_name) { |
1000 | warn_report("The 'name' parameter is deprecated, use 'id' instead"); | |
1001 | } | |
1002 | ||
f394b2e2 EB |
1003 | /* Map the old options to the new flat type */ |
1004 | switch (opts->type) { | |
d3be4b57 | 1005 | case NET_LEGACY_OPTIONS_TYPE_NONE: |
d139e9a6 | 1006 | return 0; /* nothing to do */ |
d3be4b57 | 1007 | case NET_LEGACY_OPTIONS_TYPE_NIC: |
f394b2e2 | 1008 | legacy.type = NET_CLIENT_DRIVER_NIC; |
d3be4b57 | 1009 | legacy.u.nic = opts->u.nic; |
f394b2e2 | 1010 | break; |
d3be4b57 | 1011 | case NET_LEGACY_OPTIONS_TYPE_USER: |
f394b2e2 | 1012 | legacy.type = NET_CLIENT_DRIVER_USER; |
d3be4b57 | 1013 | legacy.u.user = opts->u.user; |
f394b2e2 | 1014 | break; |
d3be4b57 | 1015 | case NET_LEGACY_OPTIONS_TYPE_TAP: |
f394b2e2 | 1016 | legacy.type = NET_CLIENT_DRIVER_TAP; |
d3be4b57 | 1017 | legacy.u.tap = opts->u.tap; |
f394b2e2 | 1018 | break; |
d3be4b57 | 1019 | case NET_LEGACY_OPTIONS_TYPE_L2TPV3: |
f394b2e2 | 1020 | legacy.type = NET_CLIENT_DRIVER_L2TPV3; |
d3be4b57 | 1021 | legacy.u.l2tpv3 = opts->u.l2tpv3; |
f394b2e2 | 1022 | break; |
d3be4b57 | 1023 | case NET_LEGACY_OPTIONS_TYPE_SOCKET: |
f394b2e2 | 1024 | legacy.type = NET_CLIENT_DRIVER_SOCKET; |
d3be4b57 | 1025 | legacy.u.socket = opts->u.socket; |
f394b2e2 | 1026 | break; |
d3be4b57 | 1027 | case NET_LEGACY_OPTIONS_TYPE_VDE: |
f394b2e2 | 1028 | legacy.type = NET_CLIENT_DRIVER_VDE; |
d3be4b57 | 1029 | legacy.u.vde = opts->u.vde; |
f394b2e2 | 1030 | break; |
d3be4b57 | 1031 | case NET_LEGACY_OPTIONS_TYPE_BRIDGE: |
f394b2e2 | 1032 | legacy.type = NET_CLIENT_DRIVER_BRIDGE; |
d3be4b57 | 1033 | legacy.u.bridge = opts->u.bridge; |
f394b2e2 | 1034 | break; |
d3be4b57 | 1035 | case NET_LEGACY_OPTIONS_TYPE_NETMAP: |
f394b2e2 | 1036 | legacy.type = NET_CLIENT_DRIVER_NETMAP; |
d3be4b57 | 1037 | legacy.u.netmap = opts->u.netmap; |
f394b2e2 | 1038 | break; |
d3be4b57 | 1039 | case NET_LEGACY_OPTIONS_TYPE_VHOST_USER: |
f394b2e2 | 1040 | legacy.type = NET_CLIENT_DRIVER_VHOST_USER; |
d3be4b57 | 1041 | legacy.u.vhost_user = opts->u.vhost_user; |
f394b2e2 EB |
1042 | break; |
1043 | default: | |
1044 | abort(); | |
1e81aba5 | 1045 | } |
d139e9a6 | 1046 | |
f394b2e2 | 1047 | if (!net_client_init_fun[netdev->type]) { |
d139e9a6 SH |
1048 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "type", |
1049 | "a net backend type (maybe it is not compiled " | |
1050 | "into this binary)"); | |
1051 | return -1; | |
1052 | } | |
f6b134ac | 1053 | |
af1a5c3e | 1054 | /* Do not add to a hub if it's a nic with a netdev= parameter. */ |
f394b2e2 | 1055 | if (netdev->type != NET_CLIENT_DRIVER_NIC || |
d3be4b57 | 1056 | !opts->u.nic.has_netdev) { |
af1a5c3e | 1057 | peer = net_hub_add_port(0, NULL, NULL); |
a2dbe135 | 1058 | } |
4ef0defb | 1059 | } |
6687b79d | 1060 | |
f394b2e2 | 1061 | if (net_client_init_fun[netdev->type](netdev, name, peer, errp) < 0) { |
4ef0defb SH |
1062 | /* FIXME drop when all init functions store an Error */ |
1063 | if (errp && !*errp) { | |
1064 | error_setg(errp, QERR_DEVICE_INIT_FAILED, | |
977c736f | 1065 | NetClientDriver_str(netdev->type)); |
f6b134ac | 1066 | } |
4ef0defb | 1067 | return -1; |
f6b134ac | 1068 | } |
6687b79d LE |
1069 | return 0; |
1070 | } | |
1071 | ||
547203ea TH |
1072 | static void show_netdevs(void) |
1073 | { | |
1074 | int idx; | |
1075 | const char *available_netdevs[] = { | |
1076 | "socket", | |
1077 | "hubport", | |
1078 | "tap", | |
1079 | #ifdef CONFIG_SLIRP | |
1080 | "user", | |
1081 | #endif | |
1082 | #ifdef CONFIG_L2TPV3 | |
1083 | "l2tpv3", | |
1084 | #endif | |
1085 | #ifdef CONFIG_VDE | |
1086 | "vde", | |
1087 | #endif | |
1088 | #ifdef CONFIG_NET_BRIDGE | |
1089 | "bridge", | |
1090 | #endif | |
1091 | #ifdef CONFIG_NETMAP | |
1092 | "netmap", | |
1093 | #endif | |
1094 | #ifdef CONFIG_POSIX | |
1095 | "vhost-user", | |
1096 | #endif | |
1097 | }; | |
1098 | ||
1099 | printf("Available netdev backend types:\n"); | |
1100 | for (idx = 0; idx < ARRAY_SIZE(available_netdevs); idx++) { | |
1101 | puts(available_netdevs[idx]); | |
1102 | } | |
1103 | } | |
f6b134ac | 1104 | |
aa09a485 | 1105 | static int net_client_init(QemuOpts *opts, bool is_netdev, Error **errp) |
6687b79d LE |
1106 | { |
1107 | void *object = NULL; | |
1108 | Error *err = NULL; | |
1109 | int ret = -1; | |
09204eac | 1110 | Visitor *v = opts_visitor_new(opts); |
f83c6e10 | 1111 | |
8b43f964 LM |
1112 | const char *type = qemu_opt_get(opts, "type"); |
1113 | ||
1114 | if (is_netdev && type && is_help_option(type)) { | |
547203ea TH |
1115 | show_netdevs(); |
1116 | exit(0); | |
1117 | } else { | |
7aac531e | 1118 | /* Parse convenience option format ip6-net=fec0::0[/64] */ |
891a2bb5 | 1119 | const char *ip6_net = qemu_opt_get(opts, "ipv6-net"); |
7aac531e YB |
1120 | |
1121 | if (ip6_net) { | |
1122 | char buf[strlen(ip6_net) + 1]; | |
1123 | ||
1124 | if (get_str_sep(buf, sizeof(buf), &ip6_net, '/') < 0) { | |
1125 | /* Default 64bit prefix length. */ | |
891a2bb5 ST |
1126 | qemu_opt_set(opts, "ipv6-prefix", ip6_net, &error_abort); |
1127 | qemu_opt_set_number(opts, "ipv6-prefixlen", 64, &error_abort); | |
7aac531e YB |
1128 | } else { |
1129 | /* User-specified prefix length. */ | |
1130 | unsigned long len; | |
1131 | int err; | |
1132 | ||
891a2bb5 | 1133 | qemu_opt_set(opts, "ipv6-prefix", buf, &error_abort); |
7aac531e YB |
1134 | err = qemu_strtoul(ip6_net, NULL, 10, &len); |
1135 | ||
1136 | if (err) { | |
1137 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, | |
891a2bb5 | 1138 | "ipv6-prefix", "a number"); |
7aac531e | 1139 | } else { |
891a2bb5 | 1140 | qemu_opt_set_number(opts, "ipv6-prefixlen", len, |
7aac531e YB |
1141 | &error_abort); |
1142 | } | |
1143 | } | |
891a2bb5 | 1144 | qemu_opt_unset(opts, "ipv6-net"); |
7aac531e YB |
1145 | } |
1146 | } | |
1147 | ||
96a1616c EB |
1148 | if (is_netdev) { |
1149 | visit_type_Netdev(v, NULL, (Netdev **)&object, &err); | |
1150 | } else { | |
1151 | visit_type_NetLegacy(v, NULL, (NetLegacy **)&object, &err); | |
f83c6e10 MM |
1152 | } |
1153 | ||
6687b79d | 1154 | if (!err) { |
1a0c0958 | 1155 | ret = net_client_init1(object, is_netdev, &err); |
6687b79d LE |
1156 | } |
1157 | ||
96a1616c EB |
1158 | if (is_netdev) { |
1159 | qapi_free_Netdev(object); | |
1160 | } else { | |
1161 | qapi_free_NetLegacy(object); | |
6687b79d LE |
1162 | } |
1163 | ||
1164 | error_propagate(errp, err); | |
09204eac | 1165 | visit_free(v); |
6687b79d | 1166 | return ret; |
f83c6e10 MM |
1167 | } |
1168 | ||
928059a3 LC |
1169 | void netdev_add(QemuOpts *opts, Error **errp) |
1170 | { | |
0e55c381 | 1171 | net_client_init(opts, true, errp); |
928059a3 LC |
1172 | } |
1173 | ||
485febc6 | 1174 | void qmp_netdev_add(QDict *qdict, QObject **ret, Error **errp) |
ae82d324 | 1175 | { |
4e89978e | 1176 | Error *local_err = NULL; |
928059a3 | 1177 | QemuOptsList *opts_list; |
ae82d324 | 1178 | QemuOpts *opts; |
ae82d324 | 1179 | |
928059a3 | 1180 | opts_list = qemu_find_opts_err("netdev", &local_err); |
84d18f06 | 1181 | if (local_err) { |
485febc6 | 1182 | goto out; |
ae82d324 MA |
1183 | } |
1184 | ||
928059a3 | 1185 | opts = qemu_opts_from_qdict(opts_list, qdict, &local_err); |
84d18f06 | 1186 | if (local_err) { |
485febc6 | 1187 | goto out; |
928059a3 LC |
1188 | } |
1189 | ||
1190 | netdev_add(opts, &local_err); | |
84d18f06 | 1191 | if (local_err) { |
410cbafe | 1192 | qemu_opts_del(opts); |
485febc6 | 1193 | goto out; |
410cbafe YT |
1194 | } |
1195 | ||
485febc6 MA |
1196 | out: |
1197 | error_propagate(errp, local_err); | |
ae82d324 MA |
1198 | } |
1199 | ||
5f964155 | 1200 | void qmp_netdev_del(const char *id, Error **errp) |
ae82d324 | 1201 | { |
35277d14 | 1202 | NetClientState *nc; |
645c9496 | 1203 | QemuOpts *opts; |
ae82d324 | 1204 | |
35277d14 SH |
1205 | nc = qemu_find_netdev(id); |
1206 | if (!nc) { | |
75158ebb MA |
1207 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
1208 | "Device '%s' not found", id); | |
5f964155 | 1209 | return; |
ae82d324 | 1210 | } |
5f964155 | 1211 | |
645c9496 SH |
1212 | opts = qemu_opts_find(qemu_find_opts_err("netdev", NULL), id); |
1213 | if (!opts) { | |
1214 | error_setg(errp, "Device '%s' is not a netdev", id); | |
1215 | return; | |
1216 | } | |
1217 | ||
b20c6b9e | 1218 | qemu_del_net_client(nc); |
645c9496 | 1219 | qemu_opts_del(opts); |
ae82d324 MA |
1220 | } |
1221 | ||
aa9156f4 HZ |
1222 | static void netfilter_print_info(Monitor *mon, NetFilterState *nf) |
1223 | { | |
1224 | char *str; | |
1225 | ObjectProperty *prop; | |
1226 | ObjectPropertyIterator iter; | |
3b098d56 | 1227 | Visitor *v; |
aa9156f4 HZ |
1228 | |
1229 | /* generate info str */ | |
1230 | object_property_iter_init(&iter, OBJECT(nf)); | |
1231 | while ((prop = object_property_iter_next(&iter))) { | |
1232 | if (!strcmp(prop->name, "type")) { | |
1233 | continue; | |
1234 | } | |
3b098d56 EB |
1235 | v = string_output_visitor_new(false, &str); |
1236 | object_property_get(OBJECT(nf), v, prop->name, NULL); | |
1237 | visit_complete(v, &str); | |
1238 | visit_free(v); | |
aa9156f4 HZ |
1239 | monitor_printf(mon, ",%s=%s", prop->name, str); |
1240 | g_free(str); | |
1241 | } | |
1242 | monitor_printf(mon, "\n"); | |
1243 | } | |
1244 | ||
1a859593 | 1245 | void print_net_client(Monitor *mon, NetClientState *nc) |
44e798d3 | 1246 | { |
a4960f52 YH |
1247 | NetFilterState *nf; |
1248 | ||
1ceef9f2 JW |
1249 | monitor_printf(mon, "%s: index=%d,type=%s,%s\n", nc->name, |
1250 | nc->queue_index, | |
977c736f | 1251 | NetClientDriver_str(nc->info->type), |
1ceef9f2 | 1252 | nc->info_str); |
a4960f52 YH |
1253 | if (!QTAILQ_EMPTY(&nc->filters)) { |
1254 | monitor_printf(mon, "filters:\n"); | |
1255 | } | |
1256 | QTAILQ_FOREACH(nf, &nc->filters, next) { | |
a3e8a3f3 | 1257 | char *path = object_get_canonical_path_component(OBJECT(nf)); |
aa9156f4 HZ |
1258 | |
1259 | monitor_printf(mon, " - %s: type=%s", path, | |
1260 | object_get_typename(OBJECT(nf))); | |
1261 | netfilter_print_info(mon, nf); | |
a3e8a3f3 | 1262 | g_free(path); |
a4960f52 | 1263 | } |
44e798d3 JK |
1264 | } |
1265 | ||
b1be4280 AK |
1266 | RxFilterInfoList *qmp_query_rx_filter(bool has_name, const char *name, |
1267 | Error **errp) | |
1268 | { | |
1269 | NetClientState *nc; | |
1270 | RxFilterInfoList *filter_list = NULL, *last_entry = NULL; | |
1271 | ||
1272 | QTAILQ_FOREACH(nc, &net_clients, next) { | |
1273 | RxFilterInfoList *entry; | |
1274 | RxFilterInfo *info; | |
1275 | ||
1276 | if (has_name && strcmp(nc->name, name) != 0) { | |
1277 | continue; | |
1278 | } | |
1279 | ||
1280 | /* only query rx-filter information of NIC */ | |
f394b2e2 | 1281 | if (nc->info->type != NET_CLIENT_DRIVER_NIC) { |
b1be4280 AK |
1282 | if (has_name) { |
1283 | error_setg(errp, "net client(%s) isn't a NIC", name); | |
9083da1d | 1284 | return NULL; |
b1be4280 AK |
1285 | } |
1286 | continue; | |
1287 | } | |
1288 | ||
5320c2ca VY |
1289 | /* only query information on queue 0 since the info is per nic, |
1290 | * not per queue | |
1291 | */ | |
1292 | if (nc->queue_index != 0) | |
1293 | continue; | |
1294 | ||
b1be4280 AK |
1295 | if (nc->info->query_rx_filter) { |
1296 | info = nc->info->query_rx_filter(nc); | |
1297 | entry = g_malloc0(sizeof(*entry)); | |
1298 | entry->value = info; | |
1299 | ||
1300 | if (!filter_list) { | |
1301 | filter_list = entry; | |
1302 | } else { | |
1303 | last_entry->next = entry; | |
1304 | } | |
1305 | last_entry = entry; | |
1306 | } else if (has_name) { | |
1307 | error_setg(errp, "net client(%s) doesn't support" | |
1308 | " rx-filter querying", name); | |
9083da1d | 1309 | return NULL; |
b1be4280 | 1310 | } |
638fb141 MA |
1311 | |
1312 | if (has_name) { | |
1313 | break; | |
1314 | } | |
b1be4280 AK |
1315 | } |
1316 | ||
9083da1d | 1317 | if (filter_list == NULL && has_name) { |
b1be4280 AK |
1318 | error_setg(errp, "invalid net client name: %s", name); |
1319 | } | |
1320 | ||
1321 | return filter_list; | |
1322 | } | |
1323 | ||
1ce6be24 | 1324 | void hmp_info_network(Monitor *mon, const QDict *qdict) |
63a01ef8 | 1325 | { |
35277d14 | 1326 | NetClientState *nc, *peer; |
f394b2e2 | 1327 | NetClientDriver type; |
63a01ef8 | 1328 | |
1a859593 ZYW |
1329 | net_hub_info(mon); |
1330 | ||
35277d14 SH |
1331 | QTAILQ_FOREACH(nc, &net_clients, next) { |
1332 | peer = nc->peer; | |
1333 | type = nc->info->type; | |
5610c3aa | 1334 | |
1a859593 ZYW |
1335 | /* Skip if already printed in hub info */ |
1336 | if (net_hub_id_for_client(nc, NULL) == 0) { | |
1337 | continue; | |
5610c3aa | 1338 | } |
1a859593 | 1339 | |
f394b2e2 | 1340 | if (!peer || type == NET_CLIENT_DRIVER_NIC) { |
35277d14 | 1341 | print_net_client(mon, nc); |
19061e63 | 1342 | } /* else it's a netdev connected to a NIC, printed with the NIC */ |
f394b2e2 | 1343 | if (peer && type == NET_CLIENT_DRIVER_NIC) { |
1a859593 | 1344 | monitor_printf(mon, " \\ "); |
44e798d3 | 1345 | print_net_client(mon, peer); |
a0104e0e | 1346 | } |
a0104e0e | 1347 | } |
63a01ef8 AL |
1348 | } |
1349 | ||
5fbba3d6 ZC |
1350 | void colo_notify_filters_event(int event, Error **errp) |
1351 | { | |
1352 | NetClientState *nc; | |
1353 | NetFilterState *nf; | |
1354 | NetFilterClass *nfc = NULL; | |
1355 | Error *local_err = NULL; | |
1356 | ||
1357 | QTAILQ_FOREACH(nc, &net_clients, next) { | |
1358 | QTAILQ_FOREACH(nf, &nc->filters, next) { | |
1359 | nfc = NETFILTER_GET_CLASS(OBJECT(nf)); | |
1360 | nfc->handle_event(nf, event, &local_err); | |
1361 | if (local_err) { | |
1362 | error_propagate(errp, local_err); | |
1363 | return; | |
1364 | } | |
1365 | } | |
1366 | } | |
1367 | } | |
1368 | ||
4b37156c | 1369 | void qmp_set_link(const char *name, bool up, Error **errp) |
436e5e53 | 1370 | { |
1ceef9f2 JW |
1371 | NetClientState *ncs[MAX_QUEUE_NUM]; |
1372 | NetClientState *nc; | |
1373 | int queues, i; | |
436e5e53 | 1374 | |
1ceef9f2 | 1375 | queues = qemu_find_net_clients_except(name, ncs, |
f394b2e2 | 1376 | NET_CLIENT_DRIVER__MAX, |
1ceef9f2 JW |
1377 | MAX_QUEUE_NUM); |
1378 | ||
1379 | if (queues == 0) { | |
75158ebb MA |
1380 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
1381 | "Device '%s' not found", name); | |
4b37156c | 1382 | return; |
436e5e53 | 1383 | } |
1ceef9f2 | 1384 | nc = ncs[0]; |
436e5e53 | 1385 | |
1ceef9f2 JW |
1386 | for (i = 0; i < queues; i++) { |
1387 | ncs[i]->link_down = !up; | |
1388 | } | |
436e5e53 | 1389 | |
35277d14 SH |
1390 | if (nc->info->link_status_changed) { |
1391 | nc->info->link_status_changed(nc); | |
665a3b07 | 1392 | } |
ab1cbe1c | 1393 | |
02d38fcb VY |
1394 | if (nc->peer) { |
1395 | /* Change peer link only if the peer is NIC and then notify peer. | |
1396 | * If the peer is a HUBPORT or a backend, we do not change the | |
1397 | * link status. | |
1398 | * | |
af1a5c3e | 1399 | * This behavior is compatible with qemu hubs where there could be |
02d38fcb VY |
1400 | * multiple clients that can still communicate with each other in |
1401 | * disconnected mode. For now maintain this compatibility. | |
1402 | */ | |
f394b2e2 | 1403 | if (nc->peer->info->type == NET_CLIENT_DRIVER_NIC) { |
02d38fcb VY |
1404 | for (i = 0; i < queues; i++) { |
1405 | ncs[i]->peer->link_down = !up; | |
1406 | } | |
1407 | } | |
1408 | if (nc->peer->info->link_status_changed) { | |
1409 | nc->peer->info->link_status_changed(nc->peer); | |
1410 | } | |
ab1cbe1c | 1411 | } |
436e5e53 AL |
1412 | } |
1413 | ||
ca77d85e MT |
1414 | static void net_vm_change_state_handler(void *opaque, int running, |
1415 | RunState state) | |
1416 | { | |
625de449 FZ |
1417 | NetClientState *nc; |
1418 | NetClientState *tmp; | |
ca77d85e | 1419 | |
625de449 FZ |
1420 | QTAILQ_FOREACH_SAFE(nc, &net_clients, next, tmp) { |
1421 | if (running) { | |
1422 | /* Flush queued packets and wake up backends. */ | |
1423 | if (nc->peer && qemu_can_send_packet(nc)) { | |
1424 | qemu_flush_queued_packets(nc->peer); | |
1425 | } | |
1426 | } else { | |
1427 | /* Complete all queued packets, to guarantee we don't modify | |
1428 | * state later when VM is not running. | |
1429 | */ | |
ca77d85e MT |
1430 | qemu_flush_or_purge_queued_packets(nc, true); |
1431 | } | |
1432 | } | |
1433 | } | |
1434 | ||
63a01ef8 AL |
1435 | void net_cleanup(void) |
1436 | { | |
1ceef9f2 | 1437 | NetClientState *nc; |
577c4af9 | 1438 | |
1ceef9f2 JW |
1439 | /* We may del multiple entries during qemu_del_net_client(), |
1440 | * so QTAILQ_FOREACH_SAFE() is also not safe here. | |
1441 | */ | |
1442 | while (!QTAILQ_EMPTY(&net_clients)) { | |
1443 | nc = QTAILQ_FIRST(&net_clients); | |
f394b2e2 | 1444 | if (nc->info->type == NET_CLIENT_DRIVER_NIC) { |
948ecf21 JW |
1445 | qemu_del_nic(qemu_get_nic(nc)); |
1446 | } else { | |
1447 | qemu_del_net_client(nc); | |
1448 | } | |
577c4af9 | 1449 | } |
ca77d85e MT |
1450 | |
1451 | qemu_del_vm_change_state_handler(net_change_state_entry); | |
63a01ef8 AL |
1452 | } |
1453 | ||
668680f7 | 1454 | void net_check_clients(void) |
63a01ef8 | 1455 | { |
35277d14 | 1456 | NetClientState *nc; |
48e2faf2 | 1457 | int i; |
63a01ef8 | 1458 | |
81017645 | 1459 | net_hub_check_clients(); |
ac60cc18 | 1460 | |
35277d14 SH |
1461 | QTAILQ_FOREACH(nc, &net_clients, next) { |
1462 | if (!nc->peer) { | |
8297be80 | 1463 | warn_report("%s %s has no peer", |
b62e39b4 AF |
1464 | nc->info->type == NET_CLIENT_DRIVER_NIC |
1465 | ? "nic" : "netdev", | |
1466 | nc->name); | |
efe32fdd MA |
1467 | } |
1468 | } | |
48e2faf2 PM |
1469 | |
1470 | /* Check that all NICs requested via -net nic actually got created. | |
1471 | * NICs created via -device don't need to be checked here because | |
1472 | * they are always instantiated. | |
1473 | */ | |
1474 | for (i = 0; i < MAX_NICS; i++) { | |
1475 | NICInfo *nd = &nd_table[i]; | |
1476 | if (nd->used && !nd->instantiated) { | |
8297be80 AF |
1477 | warn_report("requested NIC (%s, model %s) " |
1478 | "was not created (not supported by this machine?)", | |
1479 | nd->name ? nd->name : "anonymous", | |
1480 | nd->model ? nd->model : "unspecified"); | |
48e2faf2 PM |
1481 | } |
1482 | } | |
63a01ef8 | 1483 | } |
dc1c9fe8 | 1484 | |
28d0de7a | 1485 | static int net_init_client(void *dummy, QemuOpts *opts, Error **errp) |
dc1c9fe8 | 1486 | { |
34f708b0 | 1487 | return net_client_init(opts, false, errp); |
f6b134ac MM |
1488 | } |
1489 | ||
28d0de7a | 1490 | static int net_init_netdev(void *dummy, QemuOpts *opts, Error **errp) |
f6b134ac | 1491 | { |
34f708b0 | 1492 | return net_client_init(opts, true, errp); |
dc1c9fe8 | 1493 | } |
4559a1db | 1494 | |
78cd6f7b TH |
1495 | /* For the convenience "--nic" parameter */ |
1496 | static int net_param_nic(void *dummy, QemuOpts *opts, Error **errp) | |
1497 | { | |
1498 | char *mac, *nd_id; | |
1499 | int idx, ret; | |
1500 | NICInfo *ni; | |
1501 | const char *type; | |
1502 | ||
1503 | type = qemu_opt_get(opts, "type"); | |
1504 | if (type && g_str_equal(type, "none")) { | |
1505 | return 0; /* Nothing to do, default_net is cleared in vl.c */ | |
1506 | } | |
1507 | ||
1508 | idx = nic_get_free_idx(); | |
1509 | if (idx == -1 || nb_nics >= MAX_NICS) { | |
1510 | error_setg(errp, "no more on-board/default NIC slots available"); | |
4559a1db LC |
1511 | return -1; |
1512 | } | |
1513 | ||
78cd6f7b TH |
1514 | if (!type) { |
1515 | qemu_opt_set(opts, "type", "user", &error_abort); | |
1516 | } | |
1517 | ||
1518 | ni = &nd_table[idx]; | |
1519 | memset(ni, 0, sizeof(*ni)); | |
1520 | ni->model = qemu_opt_get_del(opts, "model"); | |
1521 | ||
1522 | /* Create an ID if the user did not specify one */ | |
1523 | nd_id = g_strdup(qemu_opts_id(opts)); | |
1524 | if (!nd_id) { | |
1525 | nd_id = g_strdup_printf("__org.qemu.nic%i\n", idx); | |
1526 | qemu_opts_set_id(opts, nd_id); | |
1527 | } | |
1528 | ||
1529 | /* Handle MAC address */ | |
1530 | mac = qemu_opt_get_del(opts, "mac"); | |
1531 | if (mac) { | |
1532 | ret = net_parse_macaddr(ni->macaddr.a, mac); | |
1533 | g_free(mac); | |
1534 | if (ret) { | |
1535 | error_setg(errp, "invalid syntax for ethernet address"); | |
9d946191 | 1536 | goto out; |
78cd6f7b TH |
1537 | } |
1538 | if (is_multicast_ether_addr(ni->macaddr.a)) { | |
1539 | error_setg(errp, "NIC cannot have multicast MAC address"); | |
9d946191 TH |
1540 | ret = -1; |
1541 | goto out; | |
78cd6f7b TH |
1542 | } |
1543 | } | |
1544 | qemu_macaddr_default_if_unset(&ni->macaddr); | |
1545 | ||
1546 | ret = net_client_init(opts, true, errp); | |
1547 | if (ret == 0) { | |
1548 | ni->netdev = qemu_find_netdev(nd_id); | |
1549 | ni->used = true; | |
1550 | nb_nics++; | |
1551 | } | |
1552 | ||
9d946191 | 1553 | out: |
78cd6f7b | 1554 | g_free(nd_id); |
4559a1db | 1555 | return ret; |
dc1c9fe8 MM |
1556 | } |
1557 | ||
34f708b0 | 1558 | int net_init_clients(Error **errp) |
dc1c9fe8 | 1559 | { |
ca77d85e MT |
1560 | net_change_state_entry = |
1561 | qemu_add_vm_change_state_handler(net_vm_change_state_handler, NULL); | |
1562 | ||
94878994 | 1563 | QTAILQ_INIT(&net_clients); |
5610c3aa | 1564 | |
28d0de7a | 1565 | if (qemu_opts_foreach(qemu_find_opts("netdev"), |
34f708b0 | 1566 | net_init_netdev, NULL, errp)) { |
f6b134ac | 1567 | return -1; |
a4c7367f | 1568 | } |
f6b134ac | 1569 | |
78cd6f7b TH |
1570 | if (qemu_opts_foreach(qemu_find_opts("nic"), net_param_nic, NULL, errp)) { |
1571 | return -1; | |
1572 | } | |
1573 | ||
34f708b0 | 1574 | if (qemu_opts_foreach(qemu_find_opts("net"), net_init_client, NULL, errp)) { |
dc1c9fe8 MM |
1575 | return -1; |
1576 | } | |
1577 | ||
dc1c9fe8 MM |
1578 | return 0; |
1579 | } | |
1580 | ||
7f161aae | 1581 | int net_client_parse(QemuOptsList *opts_list, const char *optarg) |
dc1c9fe8 | 1582 | { |
70b94331 | 1583 | if (!qemu_opts_parse_noisily(opts_list, optarg, true)) { |
dc1c9fe8 MM |
1584 | return -1; |
1585 | } | |
1586 | ||
1587 | return 0; | |
1588 | } | |
7fc8d918 JW |
1589 | |
1590 | /* From FreeBSD */ | |
1591 | /* XXX: optimize */ | |
eaba8f34 | 1592 | uint32_t net_crc32(const uint8_t *p, int len) |
7fc8d918 JW |
1593 | { |
1594 | uint32_t crc; | |
1595 | int carry, i, j; | |
1596 | uint8_t b; | |
1597 | ||
1598 | crc = 0xffffffff; | |
eaba8f34 MCA |
1599 | for (i = 0; i < len; i++) { |
1600 | b = *p++; | |
7fc8d918 JW |
1601 | for (j = 0; j < 8; j++) { |
1602 | carry = ((crc & 0x80000000L) ? 1 : 0) ^ (b & 0x01); | |
1603 | crc <<= 1; | |
1604 | b >>= 1; | |
1605 | if (carry) { | |
eaba8f34 | 1606 | crc = ((crc ^ POLYNOMIAL_BE) | carry); |
7fc8d918 JW |
1607 | } |
1608 | } | |
1609 | } | |
eaba8f34 MCA |
1610 | |
1611 | return crc; | |
1612 | } | |
1613 | ||
f1a7deb9 MCA |
1614 | uint32_t net_crc32_le(const uint8_t *p, int len) |
1615 | { | |
1616 | uint32_t crc; | |
1617 | int carry, i, j; | |
1618 | uint8_t b; | |
1619 | ||
1620 | crc = 0xffffffff; | |
1621 | for (i = 0; i < len; i++) { | |
1622 | b = *p++; | |
1623 | for (j = 0; j < 8; j++) { | |
1624 | carry = (crc & 0x1) ^ (b & 0x01); | |
1625 | crc >>= 1; | |
1626 | b >>= 1; | |
1627 | if (carry) { | |
1628 | crc ^= POLYNOMIAL_LE; | |
1629 | } | |
1630 | } | |
1631 | } | |
1632 | ||
1633 | return crc; | |
1634 | } | |
1635 | ||
4d454574 PB |
1636 | QemuOptsList qemu_netdev_opts = { |
1637 | .name = "netdev", | |
1638 | .implied_opt_name = "type", | |
1639 | .head = QTAILQ_HEAD_INITIALIZER(qemu_netdev_opts.head), | |
78cd6f7b TH |
1640 | .desc = { |
1641 | /* | |
1642 | * no elements => accept any params | |
1643 | * validation will happen later | |
1644 | */ | |
1645 | { /* end of list */ } | |
1646 | }, | |
1647 | }; | |
1648 | ||
1649 | QemuOptsList qemu_nic_opts = { | |
1650 | .name = "nic", | |
1651 | .implied_opt_name = "type", | |
1652 | .head = QTAILQ_HEAD_INITIALIZER(qemu_nic_opts.head), | |
4d454574 PB |
1653 | .desc = { |
1654 | /* | |
1655 | * no elements => accept any params | |
1656 | * validation will happen later | |
1657 | */ | |
1658 | { /* end of list */ } | |
1659 | }, | |
1660 | }; | |
1661 | ||
1662 | QemuOptsList qemu_net_opts = { | |
1663 | .name = "net", | |
1664 | .implied_opt_name = "type", | |
1665 | .head = QTAILQ_HEAD_INITIALIZER(qemu_net_opts.head), | |
1666 | .desc = { | |
1667 | /* | |
1668 | * no elements => accept any params | |
1669 | * validation will happen later | |
1670 | */ | |
1671 | { /* end of list */ } | |
1672 | }, | |
1673 | }; | |
16a3df40 ZC |
1674 | |
1675 | void net_socket_rs_init(SocketReadState *rs, | |
3cde5ea2 ZC |
1676 | SocketReadStateFinalize *finalize, |
1677 | bool vnet_hdr) | |
16a3df40 ZC |
1678 | { |
1679 | rs->state = 0; | |
3cde5ea2 | 1680 | rs->vnet_hdr = vnet_hdr; |
16a3df40 ZC |
1681 | rs->index = 0; |
1682 | rs->packet_len = 0; | |
3cde5ea2 | 1683 | rs->vnet_hdr_len = 0; |
16a3df40 ZC |
1684 | memset(rs->buf, 0, sizeof(rs->buf)); |
1685 | rs->finalize = finalize; | |
1686 | } | |
1687 | ||
1688 | /* | |
1689 | * Returns | |
e9e0a585 ZC |
1690 | * 0: success |
1691 | * -1: error occurs | |
16a3df40 ZC |
1692 | */ |
1693 | int net_fill_rstate(SocketReadState *rs, const uint8_t *buf, int size) | |
1694 | { | |
1695 | unsigned int l; | |
1696 | ||
1697 | while (size > 0) { | |
3cde5ea2 ZC |
1698 | /* Reassemble a packet from the network. |
1699 | * 0 = getting length. | |
1700 | * 1 = getting vnet header length. | |
1701 | * 2 = getting data. | |
1702 | */ | |
1703 | switch (rs->state) { | |
16a3df40 ZC |
1704 | case 0: |
1705 | l = 4 - rs->index; | |
1706 | if (l > size) { | |
1707 | l = size; | |
1708 | } | |
1709 | memcpy(rs->buf + rs->index, buf, l); | |
1710 | buf += l; | |
1711 | size -= l; | |
1712 | rs->index += l; | |
1713 | if (rs->index == 4) { | |
1714 | /* got length */ | |
1715 | rs->packet_len = ntohl(*(uint32_t *)rs->buf); | |
1716 | rs->index = 0; | |
3cde5ea2 ZC |
1717 | if (rs->vnet_hdr) { |
1718 | rs->state = 1; | |
1719 | } else { | |
1720 | rs->state = 2; | |
1721 | rs->vnet_hdr_len = 0; | |
1722 | } | |
16a3df40 ZC |
1723 | } |
1724 | break; | |
1725 | case 1: | |
3cde5ea2 ZC |
1726 | l = 4 - rs->index; |
1727 | if (l > size) { | |
1728 | l = size; | |
1729 | } | |
1730 | memcpy(rs->buf + rs->index, buf, l); | |
1731 | buf += l; | |
1732 | size -= l; | |
1733 | rs->index += l; | |
1734 | if (rs->index == 4) { | |
1735 | /* got vnet header length */ | |
1736 | rs->vnet_hdr_len = ntohl(*(uint32_t *)rs->buf); | |
1737 | rs->index = 0; | |
1738 | rs->state = 2; | |
1739 | } | |
1740 | break; | |
1741 | case 2: | |
16a3df40 ZC |
1742 | l = rs->packet_len - rs->index; |
1743 | if (l > size) { | |
1744 | l = size; | |
1745 | } | |
1746 | if (rs->index + l <= sizeof(rs->buf)) { | |
1747 | memcpy(rs->buf + rs->index, buf, l); | |
1748 | } else { | |
1749 | fprintf(stderr, "serious error: oversized packet received," | |
1750 | "connection terminated.\n"); | |
1751 | rs->index = rs->state = 0; | |
1752 | return -1; | |
1753 | } | |
1754 | ||
1755 | rs->index += l; | |
1756 | buf += l; | |
1757 | size -= l; | |
1758 | if (rs->index >= rs->packet_len) { | |
1759 | rs->index = 0; | |
1760 | rs->state = 0; | |
e79cd406 DB |
1761 | assert(rs->finalize); |
1762 | rs->finalize(rs); | |
16a3df40 ZC |
1763 | } |
1764 | break; | |
1765 | } | |
1766 | } | |
e9e0a585 ZC |
1767 | |
1768 | assert(size == 0); | |
16a3df40 ZC |
1769 | return 0; |
1770 | } |