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Commit | Line | Data |
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63a01ef8 AL |
1 | /* |
2 | * QEMU System Emulator | |
3 | * | |
4 | * Copyright (c) 2003-2008 Fabrice Bellard | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
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" |
856dfd8a | 44 | #include "qemu/ctype.h" |
75422b0d | 45 | #include "hw/qdev.h" |
1de7afc9 | 46 | #include "qemu/iov.h" |
6a1751b7 | 47 | #include "qemu/main-loop.h" |
922a01a0 | 48 | #include "qemu/option.h" |
e688df6b | 49 | #include "qapi/error.h" |
6687b79d | 50 | #include "qapi/opts-visitor.h" |
e1d64c08 | 51 | #include "sysemu/sysemu.h" |
559964a1 | 52 | #include "sysemu/qtest.h" |
fdccce45 | 53 | #include "net/filter.h" |
aa9156f4 | 54 | #include "qapi/string-output-visitor.h" |
511d2b14 | 55 | |
2944e4ec SW |
56 | /* Net bridge is currently not supported for W32. */ |
57 | #if !defined(_WIN32) | |
58 | # define CONFIG_NET_BRIDGE | |
59 | #endif | |
60 | ||
ca77d85e | 61 | static VMChangeStateEntry *net_change_state_entry; |
4e68f7a0 | 62 | static QTAILQ_HEAD(, NetClientState) net_clients; |
63a01ef8 AL |
63 | |
64 | /***********************************************************/ | |
65 | /* network device redirectors */ | |
66 | ||
63a01ef8 AL |
67 | static int get_str_sep(char *buf, int buf_size, const char **pp, int sep) |
68 | { | |
69 | const char *p, *p1; | |
70 | int len; | |
71 | p = *pp; | |
72 | p1 = strchr(p, sep); | |
73 | if (!p1) | |
74 | return -1; | |
75 | len = p1 - p; | |
76 | p1++; | |
77 | if (buf_size > 0) { | |
78 | if (len > buf_size - 1) | |
79 | len = buf_size - 1; | |
80 | memcpy(buf, p, len); | |
81 | buf[len] = '\0'; | |
82 | } | |
83 | *pp = p1; | |
84 | return 0; | |
85 | } | |
86 | ||
bcd4dfd6 MZ |
87 | int parse_host_port(struct sockaddr_in *saddr, const char *str, |
88 | Error **errp) | |
63a01ef8 | 89 | { |
add99347 | 90 | gchar **substrings; |
63a01ef8 | 91 | struct hostent *he; |
add99347 SG |
92 | const char *addr, *p, *r; |
93 | int port, ret = 0; | |
63a01ef8 | 94 | |
add99347 SG |
95 | substrings = g_strsplit(str, ":", 2); |
96 | if (!substrings || !substrings[0] || !substrings[1]) { | |
bcd4dfd6 MZ |
97 | error_setg(errp, "host address '%s' doesn't contain ':' " |
98 | "separating host from port", str); | |
add99347 SG |
99 | ret = -1; |
100 | goto out; | |
bcd4dfd6 | 101 | } |
add99347 SG |
102 | |
103 | addr = substrings[0]; | |
104 | p = substrings[1]; | |
105 | ||
63a01ef8 | 106 | saddr->sin_family = AF_INET; |
add99347 | 107 | if (addr[0] == '\0') { |
63a01ef8 AL |
108 | saddr->sin_addr.s_addr = 0; |
109 | } else { | |
add99347 SG |
110 | if (qemu_isdigit(addr[0])) { |
111 | if (!inet_aton(addr, &saddr->sin_addr)) { | |
bcd4dfd6 | 112 | error_setg(errp, "host address '%s' is not a valid " |
add99347 SG |
113 | "IPv4 address", addr); |
114 | ret = -1; | |
115 | goto out; | |
bcd4dfd6 | 116 | } |
63a01ef8 | 117 | } else { |
add99347 | 118 | he = gethostbyname(addr); |
bcd4dfd6 | 119 | if (he == NULL) { |
add99347 SG |
120 | error_setg(errp, "can't resolve host address '%s'", addr); |
121 | ret = -1; | |
122 | goto out; | |
bcd4dfd6 | 123 | } |
63a01ef8 AL |
124 | saddr->sin_addr = *(struct in_addr *)he->h_addr; |
125 | } | |
126 | } | |
127 | port = strtol(p, (char **)&r, 0); | |
bcd4dfd6 MZ |
128 | if (r == p) { |
129 | error_setg(errp, "port number '%s' is invalid", p); | |
add99347 SG |
130 | ret = -1; |
131 | goto out; | |
bcd4dfd6 | 132 | } |
63a01ef8 | 133 | saddr->sin_port = htons(port); |
add99347 SG |
134 | |
135 | out: | |
136 | g_strfreev(substrings); | |
137 | return ret; | |
63a01ef8 AL |
138 | } |
139 | ||
890ee6ab SF |
140 | char *qemu_mac_strdup_printf(const uint8_t *macaddr) |
141 | { | |
142 | return g_strdup_printf("%.2x:%.2x:%.2x:%.2x:%.2x:%.2x", | |
143 | macaddr[0], macaddr[1], macaddr[2], | |
144 | macaddr[3], macaddr[4], macaddr[5]); | |
145 | } | |
146 | ||
35277d14 | 147 | void qemu_format_nic_info_str(NetClientState *nc, uint8_t macaddr[6]) |
7cb7434b | 148 | { |
35277d14 | 149 | snprintf(nc->info_str, sizeof(nc->info_str), |
4dda4063 | 150 | "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x", |
35277d14 | 151 | nc->model, |
7cb7434b AL |
152 | macaddr[0], macaddr[1], macaddr[2], |
153 | macaddr[3], macaddr[4], macaddr[5]); | |
154 | } | |
155 | ||
2bc22a58 SZ |
156 | static int mac_table[256] = {0}; |
157 | ||
158 | static void qemu_macaddr_set_used(MACAddr *macaddr) | |
159 | { | |
160 | int index; | |
161 | ||
162 | for (index = 0x56; index < 0xFF; index++) { | |
163 | if (macaddr->a[5] == index) { | |
164 | mac_table[index]++; | |
165 | } | |
166 | } | |
167 | } | |
168 | ||
169 | static void qemu_macaddr_set_free(MACAddr *macaddr) | |
170 | { | |
171 | int index; | |
172 | static const MACAddr base = { .a = { 0x52, 0x54, 0x00, 0x12, 0x34, 0 } }; | |
173 | ||
174 | if (memcmp(macaddr->a, &base.a, (sizeof(base.a) - 1)) != 0) { | |
175 | return; | |
176 | } | |
177 | for (index = 0x56; index < 0xFF; index++) { | |
178 | if (macaddr->a[5] == index) { | |
179 | mac_table[index]--; | |
180 | } | |
181 | } | |
182 | } | |
183 | ||
184 | static int qemu_macaddr_get_free(void) | |
185 | { | |
186 | int index; | |
187 | ||
188 | for (index = 0x56; index < 0xFF; index++) { | |
189 | if (mac_table[index] == 0) { | |
190 | return index; | |
191 | } | |
192 | } | |
193 | ||
194 | return -1; | |
195 | } | |
196 | ||
76d32cba GH |
197 | void qemu_macaddr_default_if_unset(MACAddr *macaddr) |
198 | { | |
76d32cba | 199 | static const MACAddr zero = { .a = { 0,0,0,0,0,0 } }; |
2bc22a58 SZ |
200 | static const MACAddr base = { .a = { 0x52, 0x54, 0x00, 0x12, 0x34, 0 } }; |
201 | ||
202 | if (memcmp(macaddr, &zero, sizeof(zero)) != 0) { | |
203 | if (memcmp(macaddr->a, &base.a, (sizeof(base.a) - 1)) != 0) { | |
204 | return; | |
205 | } else { | |
206 | qemu_macaddr_set_used(macaddr); | |
207 | return; | |
208 | } | |
209 | } | |
76d32cba | 210 | |
76d32cba GH |
211 | macaddr->a[0] = 0x52; |
212 | macaddr->a[1] = 0x54; | |
213 | macaddr->a[2] = 0x00; | |
214 | macaddr->a[3] = 0x12; | |
215 | macaddr->a[4] = 0x34; | |
2bc22a58 SZ |
216 | macaddr->a[5] = qemu_macaddr_get_free(); |
217 | qemu_macaddr_set_used(macaddr); | |
76d32cba GH |
218 | } |
219 | ||
d33d93b2 SH |
220 | /** |
221 | * Generate a name for net client | |
222 | * | |
c963530a | 223 | * Only net clients created with the legacy -net option and NICs need this. |
d33d93b2 | 224 | */ |
35277d14 | 225 | static char *assign_name(NetClientState *nc1, const char *model) |
676cff29 | 226 | { |
35277d14 | 227 | NetClientState *nc; |
676cff29 AL |
228 | int id = 0; |
229 | ||
35277d14 SH |
230 | QTAILQ_FOREACH(nc, &net_clients, next) { |
231 | if (nc == nc1) { | |
d33d93b2 | 232 | continue; |
5610c3aa | 233 | } |
c963530a | 234 | if (strcmp(nc->model, model) == 0) { |
53e51d85 MA |
235 | id++; |
236 | } | |
237 | } | |
238 | ||
4bf2c138 | 239 | return g_strdup_printf("%s.%d", model, id); |
676cff29 AL |
240 | } |
241 | ||
f7860455 JW |
242 | static void qemu_net_client_destructor(NetClientState *nc) |
243 | { | |
244 | g_free(nc); | |
245 | } | |
25c01bd1 JW |
246 | static ssize_t qemu_deliver_packet_iov(NetClientState *sender, |
247 | unsigned flags, | |
248 | const struct iovec *iov, | |
249 | int iovcnt, | |
250 | void *opaque); | |
f7860455 | 251 | |
18a1541a JW |
252 | static void qemu_net_client_setup(NetClientState *nc, |
253 | NetClientInfo *info, | |
254 | NetClientState *peer, | |
255 | const char *model, | |
f7860455 JW |
256 | const char *name, |
257 | NetClientDestructor *destructor) | |
63a01ef8 | 258 | { |
35277d14 SH |
259 | nc->info = info; |
260 | nc->model = g_strdup(model); | |
45460d1a | 261 | if (name) { |
35277d14 | 262 | nc->name = g_strdup(name); |
45460d1a | 263 | } else { |
35277d14 | 264 | nc->name = assign_name(nc, model); |
45460d1a | 265 | } |
5610c3aa | 266 | |
ab5f3f84 SH |
267 | if (peer) { |
268 | assert(!peer->peer); | |
35277d14 SH |
269 | nc->peer = peer; |
270 | peer->peer = nc; | |
d80b9fc6 | 271 | } |
35277d14 | 272 | QTAILQ_INSERT_TAIL(&net_clients, nc, next); |
63a01ef8 | 273 | |
3e033a46 | 274 | nc->incoming_queue = qemu_new_net_queue(qemu_deliver_packet_iov, nc); |
f7860455 | 275 | nc->destructor = destructor; |
fdccce45 | 276 | QTAILQ_INIT(&nc->filters); |
18a1541a JW |
277 | } |
278 | ||
279 | NetClientState *qemu_new_net_client(NetClientInfo *info, | |
280 | NetClientState *peer, | |
281 | const char *model, | |
282 | const char *name) | |
283 | { | |
284 | NetClientState *nc; | |
285 | ||
286 | assert(info->size >= sizeof(NetClientState)); | |
287 | ||
288 | nc = g_malloc0(info->size); | |
f7860455 JW |
289 | qemu_net_client_setup(nc, info, peer, model, name, |
290 | qemu_net_client_destructor); | |
18a1541a | 291 | |
35277d14 | 292 | return nc; |
63a01ef8 AL |
293 | } |
294 | ||
ebef2c09 MM |
295 | NICState *qemu_new_nic(NetClientInfo *info, |
296 | NICConf *conf, | |
297 | const char *model, | |
298 | const char *name, | |
299 | void *opaque) | |
300 | { | |
1ceef9f2 | 301 | NetClientState **peers = conf->peers.ncs; |
ebef2c09 | 302 | NICState *nic; |
575a1c0e | 303 | int i, queues = MAX(1, conf->peers.queues); |
ebef2c09 | 304 | |
f394b2e2 | 305 | assert(info->type == NET_CLIENT_DRIVER_NIC); |
ebef2c09 MM |
306 | assert(info->size >= sizeof(NICState)); |
307 | ||
f6b26cf2 JW |
308 | nic = g_malloc0(info->size + sizeof(NetClientState) * queues); |
309 | nic->ncs = (void *)nic + info->size; | |
ebef2c09 MM |
310 | nic->conf = conf; |
311 | nic->opaque = opaque; | |
312 | ||
f6b26cf2 JW |
313 | for (i = 0; i < queues; i++) { |
314 | qemu_net_client_setup(&nic->ncs[i], info, peers[i], model, name, | |
1ceef9f2 JW |
315 | NULL); |
316 | nic->ncs[i].queue_index = i; | |
317 | } | |
318 | ||
ebef2c09 MM |
319 | return nic; |
320 | } | |
321 | ||
1ceef9f2 JW |
322 | NetClientState *qemu_get_subqueue(NICState *nic, int queue_index) |
323 | { | |
f6b26cf2 | 324 | return nic->ncs + queue_index; |
1ceef9f2 JW |
325 | } |
326 | ||
b356f76d JW |
327 | NetClientState *qemu_get_queue(NICState *nic) |
328 | { | |
1ceef9f2 | 329 | return qemu_get_subqueue(nic, 0); |
b356f76d JW |
330 | } |
331 | ||
cc1f0f45 JW |
332 | NICState *qemu_get_nic(NetClientState *nc) |
333 | { | |
1ceef9f2 JW |
334 | NetClientState *nc0 = nc - nc->queue_index; |
335 | ||
f6b26cf2 | 336 | return (NICState *)((void *)nc0 - nc->info->size); |
cc1f0f45 JW |
337 | } |
338 | ||
339 | void *qemu_get_nic_opaque(NetClientState *nc) | |
340 | { | |
341 | NICState *nic = qemu_get_nic(nc); | |
342 | ||
343 | return nic->opaque; | |
344 | } | |
345 | ||
b20c6b9e | 346 | static void qemu_cleanup_net_client(NetClientState *nc) |
63a01ef8 | 347 | { |
35277d14 | 348 | QTAILQ_REMOVE(&net_clients, nc, next); |
63a01ef8 | 349 | |
cc2a9043 AF |
350 | if (nc->info->cleanup) { |
351 | nc->info->cleanup(nc); | |
352 | } | |
a083a89d | 353 | } |
5610c3aa | 354 | |
b20c6b9e | 355 | static void qemu_free_net_client(NetClientState *nc) |
a083a89d | 356 | { |
067404be JK |
357 | if (nc->incoming_queue) { |
358 | qemu_del_net_queue(nc->incoming_queue); | |
a005d073 | 359 | } |
35277d14 SH |
360 | if (nc->peer) { |
361 | nc->peer->peer = NULL; | |
a083a89d | 362 | } |
35277d14 SH |
363 | g_free(nc->name); |
364 | g_free(nc->model); | |
f7860455 JW |
365 | if (nc->destructor) { |
366 | nc->destructor(nc); | |
367 | } | |
63a01ef8 AL |
368 | } |
369 | ||
b20c6b9e | 370 | void qemu_del_net_client(NetClientState *nc) |
a083a89d | 371 | { |
1ceef9f2 JW |
372 | NetClientState *ncs[MAX_QUEUE_NUM]; |
373 | int queues, i; | |
fdccce45 | 374 | NetFilterState *nf, *next; |
1ceef9f2 | 375 | |
f394b2e2 | 376 | assert(nc->info->type != NET_CLIENT_DRIVER_NIC); |
7fb43911 | 377 | |
1ceef9f2 JW |
378 | /* If the NetClientState belongs to a multiqueue backend, we will change all |
379 | * other NetClientStates also. | |
380 | */ | |
381 | queues = qemu_find_net_clients_except(nc->name, ncs, | |
f394b2e2 | 382 | NET_CLIENT_DRIVER_NIC, |
1ceef9f2 JW |
383 | MAX_QUEUE_NUM); |
384 | assert(queues != 0); | |
385 | ||
fdccce45 YH |
386 | QTAILQ_FOREACH_SAFE(nf, &nc->filters, next, next) { |
387 | object_unparent(OBJECT(nf)); | |
388 | } | |
389 | ||
a083a89d | 390 | /* If there is a peer NIC, delete and cleanup client, but do not free. */ |
f394b2e2 | 391 | if (nc->peer && nc->peer->info->type == NET_CLIENT_DRIVER_NIC) { |
cc1f0f45 | 392 | NICState *nic = qemu_get_nic(nc->peer); |
a083a89d MT |
393 | if (nic->peer_deleted) { |
394 | return; | |
395 | } | |
396 | nic->peer_deleted = true; | |
1ceef9f2 JW |
397 | |
398 | for (i = 0; i < queues; i++) { | |
399 | ncs[i]->peer->link_down = true; | |
400 | } | |
401 | ||
35277d14 SH |
402 | if (nc->peer->info->link_status_changed) { |
403 | nc->peer->info->link_status_changed(nc->peer); | |
a083a89d | 404 | } |
1ceef9f2 JW |
405 | |
406 | for (i = 0; i < queues; i++) { | |
407 | qemu_cleanup_net_client(ncs[i]); | |
408 | } | |
409 | ||
a083a89d MT |
410 | return; |
411 | } | |
412 | ||
1ceef9f2 JW |
413 | for (i = 0; i < queues; i++) { |
414 | qemu_cleanup_net_client(ncs[i]); | |
415 | qemu_free_net_client(ncs[i]); | |
416 | } | |
948ecf21 JW |
417 | } |
418 | ||
419 | void qemu_del_nic(NICState *nic) | |
420 | { | |
575a1c0e | 421 | int i, queues = MAX(nic->conf->peers.queues, 1); |
1ceef9f2 | 422 | |
2bc22a58 SZ |
423 | qemu_macaddr_set_free(&nic->conf->macaddr); |
424 | ||
a083a89d | 425 | /* If this is a peer NIC and peer has already been deleted, free it now. */ |
1ceef9f2 JW |
426 | if (nic->peer_deleted) { |
427 | for (i = 0; i < queues; i++) { | |
428 | qemu_free_net_client(qemu_get_subqueue(nic, i)->peer); | |
1a609520 JK |
429 | } |
430 | } | |
1a609520 | 431 | |
1ceef9f2 JW |
432 | for (i = queues - 1; i >= 0; i--) { |
433 | NetClientState *nc = qemu_get_subqueue(nic, i); | |
434 | ||
435 | qemu_cleanup_net_client(nc); | |
436 | qemu_free_net_client(nc); | |
437 | } | |
f6b26cf2 JW |
438 | |
439 | g_free(nic); | |
1a609520 JK |
440 | } |
441 | ||
57f9ef17 MM |
442 | void qemu_foreach_nic(qemu_nic_foreach func, void *opaque) |
443 | { | |
4e68f7a0 | 444 | NetClientState *nc; |
57f9ef17 | 445 | |
94878994 | 446 | QTAILQ_FOREACH(nc, &net_clients, next) { |
f394b2e2 | 447 | if (nc->info->type == NET_CLIENT_DRIVER_NIC) { |
1ceef9f2 JW |
448 | if (nc->queue_index == 0) { |
449 | func(qemu_get_nic(nc), opaque); | |
450 | } | |
57f9ef17 MM |
451 | } |
452 | } | |
57f9ef17 MM |
453 | } |
454 | ||
d6085e3a | 455 | bool qemu_has_ufo(NetClientState *nc) |
1f55ac45 | 456 | { |
d6085e3a | 457 | if (!nc || !nc->info->has_ufo) { |
1f55ac45 VM |
458 | return false; |
459 | } | |
460 | ||
d6085e3a | 461 | return nc->info->has_ufo(nc); |
1f55ac45 VM |
462 | } |
463 | ||
d6085e3a | 464 | bool qemu_has_vnet_hdr(NetClientState *nc) |
1f55ac45 | 465 | { |
d6085e3a | 466 | if (!nc || !nc->info->has_vnet_hdr) { |
1f55ac45 VM |
467 | return false; |
468 | } | |
469 | ||
d6085e3a | 470 | return nc->info->has_vnet_hdr(nc); |
1f55ac45 VM |
471 | } |
472 | ||
d6085e3a | 473 | bool qemu_has_vnet_hdr_len(NetClientState *nc, int len) |
1f55ac45 | 474 | { |
d6085e3a | 475 | if (!nc || !nc->info->has_vnet_hdr_len) { |
1f55ac45 VM |
476 | return false; |
477 | } | |
478 | ||
d6085e3a | 479 | return nc->info->has_vnet_hdr_len(nc, len); |
1f55ac45 VM |
480 | } |
481 | ||
d6085e3a | 482 | void qemu_using_vnet_hdr(NetClientState *nc, bool enable) |
1f55ac45 | 483 | { |
d6085e3a | 484 | if (!nc || !nc->info->using_vnet_hdr) { |
1f55ac45 VM |
485 | return; |
486 | } | |
487 | ||
d6085e3a | 488 | nc->info->using_vnet_hdr(nc, enable); |
1f55ac45 VM |
489 | } |
490 | ||
d6085e3a | 491 | void qemu_set_offload(NetClientState *nc, int csum, int tso4, int tso6, |
1f55ac45 VM |
492 | int ecn, int ufo) |
493 | { | |
d6085e3a | 494 | if (!nc || !nc->info->set_offload) { |
1f55ac45 VM |
495 | return; |
496 | } | |
497 | ||
d6085e3a | 498 | nc->info->set_offload(nc, csum, tso4, tso6, ecn, ufo); |
1f55ac45 VM |
499 | } |
500 | ||
d6085e3a | 501 | void qemu_set_vnet_hdr_len(NetClientState *nc, int len) |
1f55ac45 | 502 | { |
d6085e3a | 503 | if (!nc || !nc->info->set_vnet_hdr_len) { |
1f55ac45 VM |
504 | return; |
505 | } | |
506 | ||
d6b732e9 | 507 | nc->vnet_hdr_len = len; |
d6085e3a | 508 | nc->info->set_vnet_hdr_len(nc, len); |
1f55ac45 VM |
509 | } |
510 | ||
c80cd6bb GK |
511 | int qemu_set_vnet_le(NetClientState *nc, bool is_le) |
512 | { | |
052bd52f | 513 | #ifdef HOST_WORDS_BIGENDIAN |
c80cd6bb GK |
514 | if (!nc || !nc->info->set_vnet_le) { |
515 | return -ENOSYS; | |
516 | } | |
517 | ||
518 | return nc->info->set_vnet_le(nc, is_le); | |
052bd52f MT |
519 | #else |
520 | return 0; | |
521 | #endif | |
c80cd6bb GK |
522 | } |
523 | ||
524 | int qemu_set_vnet_be(NetClientState *nc, bool is_be) | |
525 | { | |
052bd52f MT |
526 | #ifdef HOST_WORDS_BIGENDIAN |
527 | return 0; | |
528 | #else | |
c80cd6bb GK |
529 | if (!nc || !nc->info->set_vnet_be) { |
530 | return -ENOSYS; | |
531 | } | |
532 | ||
533 | return nc->info->set_vnet_be(nc, is_be); | |
052bd52f | 534 | #endif |
c80cd6bb GK |
535 | } |
536 | ||
4e68f7a0 | 537 | int qemu_can_send_packet(NetClientState *sender) |
63a01ef8 | 538 | { |
e1d64c08 HZ |
539 | int vm_running = runstate_is_running(); |
540 | ||
541 | if (!vm_running) { | |
542 | return 0; | |
543 | } | |
544 | ||
a005d073 | 545 | if (!sender->peer) { |
d80b9fc6 MM |
546 | return 1; |
547 | } | |
548 | ||
a005d073 SH |
549 | if (sender->peer->receive_disabled) { |
550 | return 0; | |
551 | } else if (sender->peer->info->can_receive && | |
552 | !sender->peer->info->can_receive(sender->peer)) { | |
553 | return 0; | |
63a01ef8 | 554 | } |
60c07d93 | 555 | return 1; |
63a01ef8 AL |
556 | } |
557 | ||
e64c770d YH |
558 | static ssize_t filter_receive_iov(NetClientState *nc, |
559 | NetFilterDirection direction, | |
560 | NetClientState *sender, | |
561 | unsigned flags, | |
562 | const struct iovec *iov, | |
563 | int iovcnt, | |
564 | NetPacketSent *sent_cb) | |
565 | { | |
566 | ssize_t ret = 0; | |
567 | NetFilterState *nf = NULL; | |
568 | ||
25aaadf0 LZ |
569 | if (direction == NET_FILTER_DIRECTION_TX) { |
570 | QTAILQ_FOREACH(nf, &nc->filters, next) { | |
571 | ret = qemu_netfilter_receive(nf, direction, sender, flags, iov, | |
572 | iovcnt, sent_cb); | |
573 | if (ret) { | |
574 | return ret; | |
575 | } | |
576 | } | |
577 | } else { | |
eae3eb3e | 578 | QTAILQ_FOREACH_REVERSE(nf, &nc->filters, next) { |
25aaadf0 LZ |
579 | ret = qemu_netfilter_receive(nf, direction, sender, flags, iov, |
580 | iovcnt, sent_cb); | |
581 | if (ret) { | |
582 | return ret; | |
583 | } | |
e64c770d YH |
584 | } |
585 | } | |
586 | ||
587 | return ret; | |
588 | } | |
589 | ||
590 | static ssize_t filter_receive(NetClientState *nc, | |
591 | NetFilterDirection direction, | |
592 | NetClientState *sender, | |
593 | unsigned flags, | |
594 | const uint8_t *data, | |
595 | size_t size, | |
596 | NetPacketSent *sent_cb) | |
597 | { | |
598 | struct iovec iov = { | |
599 | .iov_base = (void *)data, | |
600 | .iov_len = size | |
601 | }; | |
602 | ||
603 | return filter_receive_iov(nc, direction, sender, flags, &iov, 1, sent_cb); | |
604 | } | |
605 | ||
35277d14 | 606 | void qemu_purge_queued_packets(NetClientState *nc) |
8cad5516 | 607 | { |
35277d14 | 608 | if (!nc->peer) { |
d80b9fc6 | 609 | return; |
9a6ecb30 | 610 | } |
d80b9fc6 | 611 | |
067404be | 612 | qemu_net_queue_purge(nc->peer->incoming_queue, nc); |
8cad5516 MM |
613 | } |
614 | ||
ca77d85e | 615 | void qemu_flush_or_purge_queued_packets(NetClientState *nc, bool purge) |
e94667b9 | 616 | { |
35277d14 | 617 | nc->receive_disabled = 0; |
9a6ecb30 | 618 | |
f394b2e2 | 619 | if (nc->peer && nc->peer->info->type == NET_CLIENT_DRIVER_HUBPORT) { |
199ee608 LR |
620 | if (net_hub_flush(nc->peer)) { |
621 | qemu_notify_event(); | |
622 | } | |
199ee608 | 623 | } |
067404be | 624 | if (qemu_net_queue_flush(nc->incoming_queue)) { |
987a9b48 PB |
625 | /* We emptied the queue successfully, signal to the IO thread to repoll |
626 | * the file descriptor (for tap, for example). | |
627 | */ | |
628 | qemu_notify_event(); | |
ca77d85e MT |
629 | } else if (purge) { |
630 | /* Unable to empty the queue, purge remaining packets */ | |
631 | qemu_net_queue_purge(nc->incoming_queue, nc); | |
987a9b48 | 632 | } |
e94667b9 MM |
633 | } |
634 | ||
ca77d85e MT |
635 | void qemu_flush_queued_packets(NetClientState *nc) |
636 | { | |
637 | qemu_flush_or_purge_queued_packets(nc, false); | |
638 | } | |
639 | ||
4e68f7a0 | 640 | static ssize_t qemu_send_packet_async_with_flags(NetClientState *sender, |
ca77d175 MM |
641 | unsigned flags, |
642 | const uint8_t *buf, int size, | |
643 | NetPacketSent *sent_cb) | |
764a4d1d | 644 | { |
9a6ecb30 | 645 | NetQueue *queue; |
e64c770d | 646 | int ret; |
436e5e53 | 647 | |
63a01ef8 | 648 | #ifdef DEBUG_NET |
d80b9fc6 | 649 | printf("qemu_send_packet_async:\n"); |
a1555559 | 650 | qemu_hexdump((const char *)buf, stdout, "net", size); |
63a01ef8 | 651 | #endif |
f3b6c7fc | 652 | |
a005d073 | 653 | if (sender->link_down || !sender->peer) { |
9a6ecb30 MM |
654 | return size; |
655 | } | |
656 | ||
e64c770d YH |
657 | /* Let filters handle the packet first */ |
658 | ret = filter_receive(sender, NET_FILTER_DIRECTION_TX, | |
659 | sender, flags, buf, size, sent_cb); | |
660 | if (ret) { | |
661 | return ret; | |
662 | } | |
663 | ||
664 | ret = filter_receive(sender->peer, NET_FILTER_DIRECTION_RX, | |
665 | sender, flags, buf, size, sent_cb); | |
666 | if (ret) { | |
667 | return ret; | |
668 | } | |
669 | ||
067404be | 670 | queue = sender->peer->incoming_queue; |
9a6ecb30 | 671 | |
ca77d175 MM |
672 | return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb); |
673 | } | |
674 | ||
4e68f7a0 | 675 | ssize_t qemu_send_packet_async(NetClientState *sender, |
ca77d175 MM |
676 | const uint8_t *buf, int size, |
677 | NetPacketSent *sent_cb) | |
678 | { | |
679 | return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE, | |
680 | buf, size, sent_cb); | |
f3b6c7fc MM |
681 | } |
682 | ||
625a526b | 683 | ssize_t qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size) |
f3b6c7fc | 684 | { |
625a526b | 685 | return qemu_send_packet_async(nc, buf, size, NULL); |
63a01ef8 AL |
686 | } |
687 | ||
35277d14 | 688 | ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size) |
ca77d175 | 689 | { |
35277d14 | 690 | return qemu_send_packet_async_with_flags(nc, QEMU_NET_PACKET_FLAG_RAW, |
ca77d175 MM |
691 | buf, size, NULL); |
692 | } | |
693 | ||
35277d14 | 694 | static ssize_t nc_sendv_compat(NetClientState *nc, const struct iovec *iov, |
fefe2a78 | 695 | int iovcnt, unsigned flags) |
fbe78f4f | 696 | { |
74044c8f | 697 | uint8_t *buf = NULL; |
fefe2a78 | 698 | uint8_t *buffer; |
ce053661 | 699 | size_t offset; |
74044c8f | 700 | ssize_t ret; |
fbe78f4f | 701 | |
fefe2a78 YH |
702 | if (iovcnt == 1) { |
703 | buffer = iov[0].iov_base; | |
704 | offset = iov[0].iov_len; | |
705 | } else { | |
47f9f158 PL |
706 | offset = iov_size(iov, iovcnt); |
707 | if (offset > NET_BUFSIZE) { | |
708 | return -1; | |
709 | } | |
710 | buf = g_malloc(offset); | |
fefe2a78 | 711 | buffer = buf; |
47f9f158 | 712 | offset = iov_to_buf(iov, iovcnt, 0, buf, offset); |
fefe2a78 | 713 | } |
fbe78f4f | 714 | |
fefe2a78 | 715 | if (flags & QEMU_NET_PACKET_FLAG_RAW && nc->info->receive_raw) { |
74044c8f | 716 | ret = nc->info->receive_raw(nc, buffer, offset); |
fefe2a78 | 717 | } else { |
74044c8f | 718 | ret = nc->info->receive(nc, buffer, offset); |
fefe2a78 | 719 | } |
74044c8f PD |
720 | |
721 | g_free(buf); | |
722 | return ret; | |
fbe78f4f AL |
723 | } |
724 | ||
25c01bd1 JW |
725 | static ssize_t qemu_deliver_packet_iov(NetClientState *sender, |
726 | unsigned flags, | |
727 | const struct iovec *iov, | |
728 | int iovcnt, | |
729 | void *opaque) | |
9a6ecb30 | 730 | { |
35277d14 | 731 | NetClientState *nc = opaque; |
c67f5dc1 | 732 | int ret; |
9a6ecb30 | 733 | |
1592a994 | 734 | |
35277d14 | 735 | if (nc->link_down) { |
25c01bd1 | 736 | return iov_size(iov, iovcnt); |
9a6ecb30 MM |
737 | } |
738 | ||
c67f5dc1 SH |
739 | if (nc->receive_disabled) { |
740 | return 0; | |
741 | } | |
742 | ||
ca1ee3d6 | 743 | if (nc->info->receive_iov && !(flags & QEMU_NET_PACKET_FLAG_RAW)) { |
c67f5dc1 | 744 | ret = nc->info->receive_iov(nc, iov, iovcnt); |
9a6ecb30 | 745 | } else { |
fefe2a78 | 746 | ret = nc_sendv_compat(nc, iov, iovcnt, flags); |
c67f5dc1 SH |
747 | } |
748 | ||
749 | if (ret == 0) { | |
750 | nc->receive_disabled = 1; | |
e94667b9 | 751 | } |
c67f5dc1 SH |
752 | |
753 | return ret; | |
e94667b9 MM |
754 | } |
755 | ||
4e68f7a0 | 756 | ssize_t qemu_sendv_packet_async(NetClientState *sender, |
f3b6c7fc MM |
757 | const struct iovec *iov, int iovcnt, |
758 | NetPacketSent *sent_cb) | |
e94667b9 | 759 | { |
9a6ecb30 | 760 | NetQueue *queue; |
25c01bd1 | 761 | size_t size = iov_size(iov, iovcnt); |
e64c770d | 762 | int ret; |
9a6ecb30 | 763 | |
25c01bd1 JW |
764 | if (size > NET_BUFSIZE) { |
765 | return size; | |
766 | } | |
767 | ||
a005d073 | 768 | if (sender->link_down || !sender->peer) { |
25c01bd1 | 769 | return size; |
e94667b9 MM |
770 | } |
771 | ||
e64c770d YH |
772 | /* Let filters handle the packet first */ |
773 | ret = filter_receive_iov(sender, NET_FILTER_DIRECTION_TX, sender, | |
774 | QEMU_NET_PACKET_FLAG_NONE, iov, iovcnt, sent_cb); | |
775 | if (ret) { | |
776 | return ret; | |
777 | } | |
778 | ||
779 | ret = filter_receive_iov(sender->peer, NET_FILTER_DIRECTION_RX, sender, | |
780 | QEMU_NET_PACKET_FLAG_NONE, iov, iovcnt, sent_cb); | |
781 | if (ret) { | |
782 | return ret; | |
783 | } | |
784 | ||
067404be | 785 | queue = sender->peer->incoming_queue; |
9a6ecb30 | 786 | |
c0b8e49c MM |
787 | return qemu_net_queue_send_iov(queue, sender, |
788 | QEMU_NET_PACKET_FLAG_NONE, | |
789 | iov, iovcnt, sent_cb); | |
fbe78f4f AL |
790 | } |
791 | ||
f3b6c7fc | 792 | ssize_t |
35277d14 | 793 | qemu_sendv_packet(NetClientState *nc, const struct iovec *iov, int iovcnt) |
f3b6c7fc | 794 | { |
35277d14 | 795 | return qemu_sendv_packet_async(nc, iov, iovcnt, NULL); |
63a01ef8 AL |
796 | } |
797 | ||
4e68f7a0 | 798 | NetClientState *qemu_find_netdev(const char *id) |
5869c4d5 | 799 | { |
35277d14 | 800 | NetClientState *nc; |
5869c4d5 | 801 | |
35277d14 | 802 | QTAILQ_FOREACH(nc, &net_clients, next) { |
f394b2e2 | 803 | if (nc->info->type == NET_CLIENT_DRIVER_NIC) |
85dde9a9 | 804 | continue; |
35277d14 SH |
805 | if (!strcmp(nc->name, id)) { |
806 | return nc; | |
5869c4d5 MM |
807 | } |
808 | } | |
809 | ||
810 | return NULL; | |
811 | } | |
812 | ||
6c51ae73 | 813 | int qemu_find_net_clients_except(const char *id, NetClientState **ncs, |
f394b2e2 | 814 | NetClientDriver type, int max) |
6c51ae73 JW |
815 | { |
816 | NetClientState *nc; | |
817 | int ret = 0; | |
818 | ||
819 | QTAILQ_FOREACH(nc, &net_clients, next) { | |
820 | if (nc->info->type == type) { | |
821 | continue; | |
822 | } | |
40d19394 | 823 | if (!id || !strcmp(nc->name, id)) { |
6c51ae73 JW |
824 | if (ret < max) { |
825 | ncs[ret] = nc; | |
826 | } | |
827 | ret++; | |
828 | } | |
829 | } | |
830 | ||
831 | return ret; | |
832 | } | |
833 | ||
7697079b AL |
834 | static int nic_get_free_idx(void) |
835 | { | |
836 | int index; | |
837 | ||
838 | for (index = 0; index < MAX_NICS; index++) | |
839 | if (!nd_table[index].used) | |
840 | return index; | |
841 | return -1; | |
842 | } | |
843 | ||
07caea31 MA |
844 | int qemu_show_nic_models(const char *arg, const char *const *models) |
845 | { | |
846 | int i; | |
847 | ||
c8057f95 | 848 | if (!arg || !is_help_option(arg)) { |
07caea31 | 849 | return 0; |
c8057f95 | 850 | } |
07caea31 | 851 | |
7b71e03a TH |
852 | printf("Supported NIC models:\n"); |
853 | for (i = 0 ; models[i]; i++) { | |
854 | printf("%s\n", models[i]); | |
855 | } | |
07caea31 MA |
856 | return 1; |
857 | } | |
858 | ||
d07f22c5 AL |
859 | void qemu_check_nic_model(NICInfo *nd, const char *model) |
860 | { | |
861 | const char *models[2]; | |
862 | ||
863 | models[0] = model; | |
864 | models[1] = NULL; | |
865 | ||
07caea31 MA |
866 | if (qemu_show_nic_models(nd->model, models)) |
867 | exit(0); | |
868 | if (qemu_find_nic_model(nd, models, model) < 0) | |
869 | exit(1); | |
d07f22c5 AL |
870 | } |
871 | ||
07caea31 MA |
872 | int qemu_find_nic_model(NICInfo *nd, const char * const *models, |
873 | const char *default_model) | |
d07f22c5 | 874 | { |
07caea31 | 875 | int i; |
d07f22c5 AL |
876 | |
877 | if (!nd->model) | |
7267c094 | 878 | nd->model = g_strdup(default_model); |
d07f22c5 | 879 | |
07caea31 MA |
880 | for (i = 0 ; models[i]; i++) { |
881 | if (strcmp(nd->model, models[i]) == 0) | |
882 | return i; | |
d07f22c5 AL |
883 | } |
884 | ||
6daf194d | 885 | error_report("Unsupported NIC model: %s", nd->model); |
07caea31 | 886 | return -1; |
d07f22c5 AL |
887 | } |
888 | ||
cebea510 | 889 | static int net_init_nic(const Netdev *netdev, const char *name, |
a30ecde6 | 890 | NetClientState *peer, Error **errp) |
f83c6e10 MM |
891 | { |
892 | int idx; | |
893 | NICInfo *nd; | |
2456f36f LE |
894 | const NetLegacyNicOptions *nic; |
895 | ||
f394b2e2 EB |
896 | assert(netdev->type == NET_CLIENT_DRIVER_NIC); |
897 | nic = &netdev->u.nic; | |
f83c6e10 MM |
898 | |
899 | idx = nic_get_free_idx(); | |
900 | if (idx == -1 || nb_nics >= MAX_NICS) { | |
66308868 | 901 | error_setg(errp, "too many NICs"); |
f83c6e10 MM |
902 | return -1; |
903 | } | |
904 | ||
905 | nd = &nd_table[idx]; | |
906 | ||
907 | memset(nd, 0, sizeof(*nd)); | |
908 | ||
2456f36f LE |
909 | if (nic->has_netdev) { |
910 | nd->netdev = qemu_find_netdev(nic->netdev); | |
5869c4d5 | 911 | if (!nd->netdev) { |
66308868 | 912 | error_setg(errp, "netdev '%s' not found", nic->netdev); |
5869c4d5 MM |
913 | return -1; |
914 | } | |
915 | } else { | |
d33d93b2 SH |
916 | assert(peer); |
917 | nd->netdev = peer; | |
5869c4d5 | 918 | } |
c64f50d1 | 919 | nd->name = g_strdup(name); |
2456f36f LE |
920 | if (nic->has_model) { |
921 | nd->model = g_strdup(nic->model); | |
f83c6e10 | 922 | } |
2456f36f LE |
923 | if (nic->has_addr) { |
924 | nd->devaddr = g_strdup(nic->addr); | |
f83c6e10 MM |
925 | } |
926 | ||
2456f36f LE |
927 | if (nic->has_macaddr && |
928 | net_parse_macaddr(nd->macaddr.a, nic->macaddr) < 0) { | |
66308868 | 929 | error_setg(errp, "invalid syntax for ethernet address"); |
f83c6e10 MM |
930 | return -1; |
931 | } | |
d60b20cf DK |
932 | if (nic->has_macaddr && |
933 | is_multicast_ether_addr(nd->macaddr.a)) { | |
66308868 MA |
934 | error_setg(errp, |
935 | "NIC cannot have multicast MAC address (odd 1st byte)"); | |
d60b20cf DK |
936 | return -1; |
937 | } | |
6eed1856 | 938 | qemu_macaddr_default_if_unset(&nd->macaddr); |
f83c6e10 | 939 | |
2456f36f LE |
940 | if (nic->has_vectors) { |
941 | if (nic->vectors > 0x7ffffff) { | |
66308868 | 942 | error_setg(errp, "invalid # of vectors: %"PRIu32, nic->vectors); |
2456f36f LE |
943 | return -1; |
944 | } | |
945 | nd->nvectors = nic->vectors; | |
946 | } else { | |
947 | nd->nvectors = DEV_NVECTORS_UNSPECIFIED; | |
f83c6e10 MM |
948 | } |
949 | ||
950 | nd->used = 1; | |
f83c6e10 MM |
951 | nb_nics++; |
952 | ||
953 | return idx; | |
954 | } | |
955 | ||
6687b79d | 956 | |
f394b2e2 | 957 | static int (* const net_client_init_fun[NET_CLIENT_DRIVER__MAX])( |
cebea510 | 958 | const Netdev *netdev, |
6687b79d | 959 | const char *name, |
a30ecde6 | 960 | NetClientState *peer, Error **errp) = { |
f394b2e2 | 961 | [NET_CLIENT_DRIVER_NIC] = net_init_nic, |
ec302ffd | 962 | #ifdef CONFIG_SLIRP |
f394b2e2 | 963 | [NET_CLIENT_DRIVER_USER] = net_init_slirp, |
2944e4ec | 964 | #endif |
f394b2e2 EB |
965 | [NET_CLIENT_DRIVER_TAP] = net_init_tap, |
966 | [NET_CLIENT_DRIVER_SOCKET] = net_init_socket, | |
dd51058d | 967 | #ifdef CONFIG_VDE |
f394b2e2 | 968 | [NET_CLIENT_DRIVER_VDE] = net_init_vde, |
58952137 VM |
969 | #endif |
970 | #ifdef CONFIG_NETMAP | |
f394b2e2 | 971 | [NET_CLIENT_DRIVER_NETMAP] = net_init_netmap, |
dd51058d | 972 | #endif |
2944e4ec | 973 | #ifdef CONFIG_NET_BRIDGE |
f394b2e2 | 974 | [NET_CLIENT_DRIVER_BRIDGE] = net_init_bridge, |
6687b79d | 975 | #endif |
f394b2e2 | 976 | [NET_CLIENT_DRIVER_HUBPORT] = net_init_hubport, |
56f41de7 | 977 | #ifdef CONFIG_VHOST_NET_USER |
f394b2e2 | 978 | [NET_CLIENT_DRIVER_VHOST_USER] = net_init_vhost_user, |
03ce5744 | 979 | #endif |
015a33bd | 980 | #ifdef CONFIG_L2TPV3 |
f394b2e2 | 981 | [NET_CLIENT_DRIVER_L2TPV3] = net_init_l2tpv3, |
3fb69aa1 | 982 | #endif |
f83c6e10 MM |
983 | }; |
984 | ||
6687b79d | 985 | |
0e55c381 | 986 | static int net_client_init1(const void *object, bool is_netdev, Error **errp) |
f83c6e10 | 987 | { |
cebea510 KZ |
988 | Netdev legacy = {0}; |
989 | const Netdev *netdev; | |
6d952ebe | 990 | const char *name; |
4ef0defb | 991 | NetClientState *peer = NULL; |
f83c6e10 | 992 | |
5294e2c7 | 993 | if (is_netdev) { |
cebea510 | 994 | netdev = object; |
1e81aba5 | 995 | name = netdev->id; |
6687b79d | 996 | |
857d2087 | 997 | if (netdev->type == NET_CLIENT_DRIVER_NIC || |
f394b2e2 | 998 | !net_client_init_fun[netdev->type]) { |
c6bd8c70 MA |
999 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "type", |
1000 | "a netdev backend type"); | |
f6b134ac MM |
1001 | return -1; |
1002 | } | |
6687b79d | 1003 | } else { |
1e81aba5 | 1004 | const NetLegacy *net = object; |
f394b2e2 | 1005 | const NetLegacyOptions *opts = net->opts; |
cebea510 | 1006 | legacy.id = net->id; |
cebea510 | 1007 | netdev = &legacy; |
6687b79d | 1008 | /* missing optional values have been initialized to "all bits zero" */ |
1e81aba5 | 1009 | name = net->has_id ? net->id : net->name; |
d139e9a6 | 1010 | |
101625a4 TH |
1011 | if (net->has_name) { |
1012 | warn_report("The 'name' parameter is deprecated, use 'id' instead"); | |
1013 | } | |
1014 | ||
f394b2e2 EB |
1015 | /* Map the old options to the new flat type */ |
1016 | switch (opts->type) { | |
d3be4b57 | 1017 | case NET_LEGACY_OPTIONS_TYPE_NONE: |
d139e9a6 | 1018 | return 0; /* nothing to do */ |
d3be4b57 | 1019 | case NET_LEGACY_OPTIONS_TYPE_NIC: |
f394b2e2 | 1020 | legacy.type = NET_CLIENT_DRIVER_NIC; |
d3be4b57 | 1021 | legacy.u.nic = opts->u.nic; |
f394b2e2 | 1022 | break; |
d3be4b57 | 1023 | case NET_LEGACY_OPTIONS_TYPE_USER: |
f394b2e2 | 1024 | legacy.type = NET_CLIENT_DRIVER_USER; |
d3be4b57 | 1025 | legacy.u.user = opts->u.user; |
f394b2e2 | 1026 | break; |
d3be4b57 | 1027 | case NET_LEGACY_OPTIONS_TYPE_TAP: |
f394b2e2 | 1028 | legacy.type = NET_CLIENT_DRIVER_TAP; |
d3be4b57 | 1029 | legacy.u.tap = opts->u.tap; |
f394b2e2 | 1030 | break; |
d3be4b57 | 1031 | case NET_LEGACY_OPTIONS_TYPE_L2TPV3: |
f394b2e2 | 1032 | legacy.type = NET_CLIENT_DRIVER_L2TPV3; |
d3be4b57 | 1033 | legacy.u.l2tpv3 = opts->u.l2tpv3; |
f394b2e2 | 1034 | break; |
d3be4b57 | 1035 | case NET_LEGACY_OPTIONS_TYPE_SOCKET: |
f394b2e2 | 1036 | legacy.type = NET_CLIENT_DRIVER_SOCKET; |
d3be4b57 | 1037 | legacy.u.socket = opts->u.socket; |
f394b2e2 | 1038 | break; |
d3be4b57 | 1039 | case NET_LEGACY_OPTIONS_TYPE_VDE: |
f394b2e2 | 1040 | legacy.type = NET_CLIENT_DRIVER_VDE; |
d3be4b57 | 1041 | legacy.u.vde = opts->u.vde; |
f394b2e2 | 1042 | break; |
d3be4b57 | 1043 | case NET_LEGACY_OPTIONS_TYPE_BRIDGE: |
f394b2e2 | 1044 | legacy.type = NET_CLIENT_DRIVER_BRIDGE; |
d3be4b57 | 1045 | legacy.u.bridge = opts->u.bridge; |
f394b2e2 | 1046 | break; |
d3be4b57 | 1047 | case NET_LEGACY_OPTIONS_TYPE_NETMAP: |
f394b2e2 | 1048 | legacy.type = NET_CLIENT_DRIVER_NETMAP; |
d3be4b57 | 1049 | legacy.u.netmap = opts->u.netmap; |
f394b2e2 | 1050 | break; |
d3be4b57 | 1051 | case NET_LEGACY_OPTIONS_TYPE_VHOST_USER: |
f394b2e2 | 1052 | legacy.type = NET_CLIENT_DRIVER_VHOST_USER; |
d3be4b57 | 1053 | legacy.u.vhost_user = opts->u.vhost_user; |
f394b2e2 EB |
1054 | break; |
1055 | default: | |
1056 | abort(); | |
1e81aba5 | 1057 | } |
d139e9a6 | 1058 | |
f394b2e2 | 1059 | if (!net_client_init_fun[netdev->type]) { |
d139e9a6 SH |
1060 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "type", |
1061 | "a net backend type (maybe it is not compiled " | |
1062 | "into this binary)"); | |
1063 | return -1; | |
1064 | } | |
f6b134ac | 1065 | |
af1a5c3e | 1066 | /* Do not add to a hub if it's a nic with a netdev= parameter. */ |
f394b2e2 | 1067 | if (netdev->type != NET_CLIENT_DRIVER_NIC || |
d3be4b57 | 1068 | !opts->u.nic.has_netdev) { |
af1a5c3e | 1069 | peer = net_hub_add_port(0, NULL, NULL); |
a2dbe135 | 1070 | } |
4ef0defb | 1071 | } |
6687b79d | 1072 | |
f394b2e2 | 1073 | if (net_client_init_fun[netdev->type](netdev, name, peer, errp) < 0) { |
4ef0defb SH |
1074 | /* FIXME drop when all init functions store an Error */ |
1075 | if (errp && !*errp) { | |
1076 | error_setg(errp, QERR_DEVICE_INIT_FAILED, | |
977c736f | 1077 | NetClientDriver_str(netdev->type)); |
f6b134ac | 1078 | } |
4ef0defb | 1079 | return -1; |
f6b134ac | 1080 | } |
6687b79d LE |
1081 | return 0; |
1082 | } | |
1083 | ||
547203ea TH |
1084 | static void show_netdevs(void) |
1085 | { | |
1086 | int idx; | |
1087 | const char *available_netdevs[] = { | |
1088 | "socket", | |
1089 | "hubport", | |
1090 | "tap", | |
1091 | #ifdef CONFIG_SLIRP | |
1092 | "user", | |
1093 | #endif | |
1094 | #ifdef CONFIG_L2TPV3 | |
1095 | "l2tpv3", | |
1096 | #endif | |
1097 | #ifdef CONFIG_VDE | |
1098 | "vde", | |
1099 | #endif | |
1100 | #ifdef CONFIG_NET_BRIDGE | |
1101 | "bridge", | |
1102 | #endif | |
1103 | #ifdef CONFIG_NETMAP | |
1104 | "netmap", | |
1105 | #endif | |
1106 | #ifdef CONFIG_POSIX | |
1107 | "vhost-user", | |
1108 | #endif | |
1109 | }; | |
1110 | ||
1111 | printf("Available netdev backend types:\n"); | |
1112 | for (idx = 0; idx < ARRAY_SIZE(available_netdevs); idx++) { | |
1113 | puts(available_netdevs[idx]); | |
1114 | } | |
1115 | } | |
f6b134ac | 1116 | |
aa09a485 | 1117 | static int net_client_init(QemuOpts *opts, bool is_netdev, Error **errp) |
6687b79d | 1118 | { |
c1112b2d | 1119 | gchar **substrings = NULL; |
6687b79d LE |
1120 | void *object = NULL; |
1121 | Error *err = NULL; | |
1122 | int ret = -1; | |
09204eac | 1123 | Visitor *v = opts_visitor_new(opts); |
f83c6e10 | 1124 | |
8b43f964 LM |
1125 | const char *type = qemu_opt_get(opts, "type"); |
1126 | ||
1127 | if (is_netdev && type && is_help_option(type)) { | |
547203ea TH |
1128 | show_netdevs(); |
1129 | exit(0); | |
1130 | } else { | |
7aac531e | 1131 | /* Parse convenience option format ip6-net=fec0::0[/64] */ |
891a2bb5 | 1132 | const char *ip6_net = qemu_opt_get(opts, "ipv6-net"); |
7aac531e YB |
1133 | |
1134 | if (ip6_net) { | |
c1112b2d SG |
1135 | char *prefix_addr; |
1136 | unsigned long prefix_len = 64; /* Default 64bit prefix length. */ | |
1137 | ||
1138 | substrings = g_strsplit(ip6_net, "/", 2); | |
1139 | if (!substrings || !substrings[0]) { | |
1140 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "ipv6-net", | |
1141 | "a valid IPv6 prefix"); | |
1142 | goto out; | |
1143 | } | |
1144 | ||
1145 | prefix_addr = substrings[0]; | |
7aac531e | 1146 | |
c1112b2d | 1147 | if (substrings[1]) { |
7aac531e | 1148 | /* User-specified prefix length. */ |
7aac531e YB |
1149 | int err; |
1150 | ||
c1112b2d | 1151 | err = qemu_strtoul(substrings[1], NULL, 10, &prefix_len); |
7aac531e YB |
1152 | if (err) { |
1153 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, | |
21c520d0 SG |
1154 | "ipv6-prefixlen", "a number"); |
1155 | goto out; | |
7aac531e YB |
1156 | } |
1157 | } | |
c1112b2d SG |
1158 | |
1159 | qemu_opt_set(opts, "ipv6-prefix", prefix_addr, &error_abort); | |
1160 | qemu_opt_set_number(opts, "ipv6-prefixlen", prefix_len, | |
1161 | &error_abort); | |
891a2bb5 | 1162 | qemu_opt_unset(opts, "ipv6-net"); |
7aac531e YB |
1163 | } |
1164 | } | |
1165 | ||
96a1616c EB |
1166 | if (is_netdev) { |
1167 | visit_type_Netdev(v, NULL, (Netdev **)&object, &err); | |
1168 | } else { | |
1169 | visit_type_NetLegacy(v, NULL, (NetLegacy **)&object, &err); | |
f83c6e10 MM |
1170 | } |
1171 | ||
6687b79d | 1172 | if (!err) { |
1a0c0958 | 1173 | ret = net_client_init1(object, is_netdev, &err); |
6687b79d LE |
1174 | } |
1175 | ||
96a1616c EB |
1176 | if (is_netdev) { |
1177 | qapi_free_Netdev(object); | |
1178 | } else { | |
1179 | qapi_free_NetLegacy(object); | |
6687b79d LE |
1180 | } |
1181 | ||
21c520d0 | 1182 | out: |
6687b79d | 1183 | error_propagate(errp, err); |
c1112b2d | 1184 | g_strfreev(substrings); |
09204eac | 1185 | visit_free(v); |
6687b79d | 1186 | return ret; |
f83c6e10 MM |
1187 | } |
1188 | ||
928059a3 LC |
1189 | void netdev_add(QemuOpts *opts, Error **errp) |
1190 | { | |
0e55c381 | 1191 | net_client_init(opts, true, errp); |
928059a3 LC |
1192 | } |
1193 | ||
485febc6 | 1194 | void qmp_netdev_add(QDict *qdict, QObject **ret, Error **errp) |
ae82d324 | 1195 | { |
4e89978e | 1196 | Error *local_err = NULL; |
928059a3 | 1197 | QemuOptsList *opts_list; |
ae82d324 | 1198 | QemuOpts *opts; |
ae82d324 | 1199 | |
928059a3 | 1200 | opts_list = qemu_find_opts_err("netdev", &local_err); |
84d18f06 | 1201 | if (local_err) { |
485febc6 | 1202 | goto out; |
ae82d324 MA |
1203 | } |
1204 | ||
928059a3 | 1205 | opts = qemu_opts_from_qdict(opts_list, qdict, &local_err); |
84d18f06 | 1206 | if (local_err) { |
485febc6 | 1207 | goto out; |
928059a3 LC |
1208 | } |
1209 | ||
1210 | netdev_add(opts, &local_err); | |
84d18f06 | 1211 | if (local_err) { |
410cbafe | 1212 | qemu_opts_del(opts); |
485febc6 | 1213 | goto out; |
410cbafe YT |
1214 | } |
1215 | ||
485febc6 MA |
1216 | out: |
1217 | error_propagate(errp, local_err); | |
ae82d324 MA |
1218 | } |
1219 | ||
5f964155 | 1220 | void qmp_netdev_del(const char *id, Error **errp) |
ae82d324 | 1221 | { |
35277d14 | 1222 | NetClientState *nc; |
645c9496 | 1223 | QemuOpts *opts; |
ae82d324 | 1224 | |
35277d14 SH |
1225 | nc = qemu_find_netdev(id); |
1226 | if (!nc) { | |
75158ebb MA |
1227 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
1228 | "Device '%s' not found", id); | |
5f964155 | 1229 | return; |
ae82d324 | 1230 | } |
5f964155 | 1231 | |
645c9496 SH |
1232 | opts = qemu_opts_find(qemu_find_opts_err("netdev", NULL), id); |
1233 | if (!opts) { | |
1234 | error_setg(errp, "Device '%s' is not a netdev", id); | |
1235 | return; | |
1236 | } | |
1237 | ||
b20c6b9e | 1238 | qemu_del_net_client(nc); |
645c9496 | 1239 | qemu_opts_del(opts); |
ae82d324 MA |
1240 | } |
1241 | ||
aa9156f4 HZ |
1242 | static void netfilter_print_info(Monitor *mon, NetFilterState *nf) |
1243 | { | |
1244 | char *str; | |
1245 | ObjectProperty *prop; | |
1246 | ObjectPropertyIterator iter; | |
3b098d56 | 1247 | Visitor *v; |
aa9156f4 HZ |
1248 | |
1249 | /* generate info str */ | |
1250 | object_property_iter_init(&iter, OBJECT(nf)); | |
1251 | while ((prop = object_property_iter_next(&iter))) { | |
1252 | if (!strcmp(prop->name, "type")) { | |
1253 | continue; | |
1254 | } | |
3b098d56 EB |
1255 | v = string_output_visitor_new(false, &str); |
1256 | object_property_get(OBJECT(nf), v, prop->name, NULL); | |
1257 | visit_complete(v, &str); | |
1258 | visit_free(v); | |
aa9156f4 HZ |
1259 | monitor_printf(mon, ",%s=%s", prop->name, str); |
1260 | g_free(str); | |
1261 | } | |
1262 | monitor_printf(mon, "\n"); | |
1263 | } | |
1264 | ||
1a859593 | 1265 | void print_net_client(Monitor *mon, NetClientState *nc) |
44e798d3 | 1266 | { |
a4960f52 YH |
1267 | NetFilterState *nf; |
1268 | ||
1ceef9f2 JW |
1269 | monitor_printf(mon, "%s: index=%d,type=%s,%s\n", nc->name, |
1270 | nc->queue_index, | |
977c736f | 1271 | NetClientDriver_str(nc->info->type), |
1ceef9f2 | 1272 | nc->info_str); |
a4960f52 YH |
1273 | if (!QTAILQ_EMPTY(&nc->filters)) { |
1274 | monitor_printf(mon, "filters:\n"); | |
1275 | } | |
1276 | QTAILQ_FOREACH(nf, &nc->filters, next) { | |
a3e8a3f3 | 1277 | char *path = object_get_canonical_path_component(OBJECT(nf)); |
aa9156f4 HZ |
1278 | |
1279 | monitor_printf(mon, " - %s: type=%s", path, | |
1280 | object_get_typename(OBJECT(nf))); | |
1281 | netfilter_print_info(mon, nf); | |
a3e8a3f3 | 1282 | g_free(path); |
a4960f52 | 1283 | } |
44e798d3 JK |
1284 | } |
1285 | ||
b1be4280 AK |
1286 | RxFilterInfoList *qmp_query_rx_filter(bool has_name, const char *name, |
1287 | Error **errp) | |
1288 | { | |
1289 | NetClientState *nc; | |
1290 | RxFilterInfoList *filter_list = NULL, *last_entry = NULL; | |
1291 | ||
1292 | QTAILQ_FOREACH(nc, &net_clients, next) { | |
1293 | RxFilterInfoList *entry; | |
1294 | RxFilterInfo *info; | |
1295 | ||
1296 | if (has_name && strcmp(nc->name, name) != 0) { | |
1297 | continue; | |
1298 | } | |
1299 | ||
1300 | /* only query rx-filter information of NIC */ | |
f394b2e2 | 1301 | if (nc->info->type != NET_CLIENT_DRIVER_NIC) { |
b1be4280 AK |
1302 | if (has_name) { |
1303 | error_setg(errp, "net client(%s) isn't a NIC", name); | |
9083da1d | 1304 | return NULL; |
b1be4280 AK |
1305 | } |
1306 | continue; | |
1307 | } | |
1308 | ||
5320c2ca VY |
1309 | /* only query information on queue 0 since the info is per nic, |
1310 | * not per queue | |
1311 | */ | |
1312 | if (nc->queue_index != 0) | |
1313 | continue; | |
1314 | ||
b1be4280 AK |
1315 | if (nc->info->query_rx_filter) { |
1316 | info = nc->info->query_rx_filter(nc); | |
1317 | entry = g_malloc0(sizeof(*entry)); | |
1318 | entry->value = info; | |
1319 | ||
1320 | if (!filter_list) { | |
1321 | filter_list = entry; | |
1322 | } else { | |
1323 | last_entry->next = entry; | |
1324 | } | |
1325 | last_entry = entry; | |
1326 | } else if (has_name) { | |
1327 | error_setg(errp, "net client(%s) doesn't support" | |
1328 | " rx-filter querying", name); | |
9083da1d | 1329 | return NULL; |
b1be4280 | 1330 | } |
638fb141 MA |
1331 | |
1332 | if (has_name) { | |
1333 | break; | |
1334 | } | |
b1be4280 AK |
1335 | } |
1336 | ||
9083da1d | 1337 | if (filter_list == NULL && has_name) { |
b1be4280 AK |
1338 | error_setg(errp, "invalid net client name: %s", name); |
1339 | } | |
1340 | ||
1341 | return filter_list; | |
1342 | } | |
1343 | ||
1ce6be24 | 1344 | void hmp_info_network(Monitor *mon, const QDict *qdict) |
63a01ef8 | 1345 | { |
35277d14 | 1346 | NetClientState *nc, *peer; |
f394b2e2 | 1347 | NetClientDriver type; |
63a01ef8 | 1348 | |
1a859593 ZYW |
1349 | net_hub_info(mon); |
1350 | ||
35277d14 SH |
1351 | QTAILQ_FOREACH(nc, &net_clients, next) { |
1352 | peer = nc->peer; | |
1353 | type = nc->info->type; | |
5610c3aa | 1354 | |
1a859593 ZYW |
1355 | /* Skip if already printed in hub info */ |
1356 | if (net_hub_id_for_client(nc, NULL) == 0) { | |
1357 | continue; | |
5610c3aa | 1358 | } |
1a859593 | 1359 | |
f394b2e2 | 1360 | if (!peer || type == NET_CLIENT_DRIVER_NIC) { |
35277d14 | 1361 | print_net_client(mon, nc); |
19061e63 | 1362 | } /* else it's a netdev connected to a NIC, printed with the NIC */ |
f394b2e2 | 1363 | if (peer && type == NET_CLIENT_DRIVER_NIC) { |
1a859593 | 1364 | monitor_printf(mon, " \\ "); |
44e798d3 | 1365 | print_net_client(mon, peer); |
a0104e0e | 1366 | } |
a0104e0e | 1367 | } |
63a01ef8 AL |
1368 | } |
1369 | ||
5fbba3d6 ZC |
1370 | void colo_notify_filters_event(int event, Error **errp) |
1371 | { | |
1372 | NetClientState *nc; | |
1373 | NetFilterState *nf; | |
1374 | NetFilterClass *nfc = NULL; | |
1375 | Error *local_err = NULL; | |
1376 | ||
1377 | QTAILQ_FOREACH(nc, &net_clients, next) { | |
1378 | QTAILQ_FOREACH(nf, &nc->filters, next) { | |
1379 | nfc = NETFILTER_GET_CLASS(OBJECT(nf)); | |
1380 | nfc->handle_event(nf, event, &local_err); | |
1381 | if (local_err) { | |
1382 | error_propagate(errp, local_err); | |
1383 | return; | |
1384 | } | |
1385 | } | |
1386 | } | |
1387 | } | |
1388 | ||
4b37156c | 1389 | void qmp_set_link(const char *name, bool up, Error **errp) |
436e5e53 | 1390 | { |
1ceef9f2 JW |
1391 | NetClientState *ncs[MAX_QUEUE_NUM]; |
1392 | NetClientState *nc; | |
1393 | int queues, i; | |
436e5e53 | 1394 | |
1ceef9f2 | 1395 | queues = qemu_find_net_clients_except(name, ncs, |
f394b2e2 | 1396 | NET_CLIENT_DRIVER__MAX, |
1ceef9f2 JW |
1397 | MAX_QUEUE_NUM); |
1398 | ||
1399 | if (queues == 0) { | |
75158ebb MA |
1400 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
1401 | "Device '%s' not found", name); | |
4b37156c | 1402 | return; |
436e5e53 | 1403 | } |
1ceef9f2 | 1404 | nc = ncs[0]; |
436e5e53 | 1405 | |
1ceef9f2 JW |
1406 | for (i = 0; i < queues; i++) { |
1407 | ncs[i]->link_down = !up; | |
1408 | } | |
436e5e53 | 1409 | |
35277d14 SH |
1410 | if (nc->info->link_status_changed) { |
1411 | nc->info->link_status_changed(nc); | |
665a3b07 | 1412 | } |
ab1cbe1c | 1413 | |
02d38fcb VY |
1414 | if (nc->peer) { |
1415 | /* Change peer link only if the peer is NIC and then notify peer. | |
1416 | * If the peer is a HUBPORT or a backend, we do not change the | |
1417 | * link status. | |
1418 | * | |
af1a5c3e | 1419 | * This behavior is compatible with qemu hubs where there could be |
02d38fcb VY |
1420 | * multiple clients that can still communicate with each other in |
1421 | * disconnected mode. For now maintain this compatibility. | |
1422 | */ | |
f394b2e2 | 1423 | if (nc->peer->info->type == NET_CLIENT_DRIVER_NIC) { |
02d38fcb VY |
1424 | for (i = 0; i < queues; i++) { |
1425 | ncs[i]->peer->link_down = !up; | |
1426 | } | |
1427 | } | |
1428 | if (nc->peer->info->link_status_changed) { | |
1429 | nc->peer->info->link_status_changed(nc->peer); | |
1430 | } | |
ab1cbe1c | 1431 | } |
436e5e53 AL |
1432 | } |
1433 | ||
ca77d85e MT |
1434 | static void net_vm_change_state_handler(void *opaque, int running, |
1435 | RunState state) | |
1436 | { | |
625de449 FZ |
1437 | NetClientState *nc; |
1438 | NetClientState *tmp; | |
ca77d85e | 1439 | |
625de449 FZ |
1440 | QTAILQ_FOREACH_SAFE(nc, &net_clients, next, tmp) { |
1441 | if (running) { | |
1442 | /* Flush queued packets and wake up backends. */ | |
1443 | if (nc->peer && qemu_can_send_packet(nc)) { | |
1444 | qemu_flush_queued_packets(nc->peer); | |
1445 | } | |
1446 | } else { | |
1447 | /* Complete all queued packets, to guarantee we don't modify | |
1448 | * state later when VM is not running. | |
1449 | */ | |
ca77d85e MT |
1450 | qemu_flush_or_purge_queued_packets(nc, true); |
1451 | } | |
1452 | } | |
1453 | } | |
1454 | ||
63a01ef8 AL |
1455 | void net_cleanup(void) |
1456 | { | |
1ceef9f2 | 1457 | NetClientState *nc; |
577c4af9 | 1458 | |
1ceef9f2 JW |
1459 | /* We may del multiple entries during qemu_del_net_client(), |
1460 | * so QTAILQ_FOREACH_SAFE() is also not safe here. | |
1461 | */ | |
1462 | while (!QTAILQ_EMPTY(&net_clients)) { | |
1463 | nc = QTAILQ_FIRST(&net_clients); | |
f394b2e2 | 1464 | if (nc->info->type == NET_CLIENT_DRIVER_NIC) { |
948ecf21 JW |
1465 | qemu_del_nic(qemu_get_nic(nc)); |
1466 | } else { | |
1467 | qemu_del_net_client(nc); | |
1468 | } | |
577c4af9 | 1469 | } |
ca77d85e MT |
1470 | |
1471 | qemu_del_vm_change_state_handler(net_change_state_entry); | |
63a01ef8 AL |
1472 | } |
1473 | ||
668680f7 | 1474 | void net_check_clients(void) |
63a01ef8 | 1475 | { |
35277d14 | 1476 | NetClientState *nc; |
48e2faf2 | 1477 | int i; |
63a01ef8 | 1478 | |
81017645 | 1479 | net_hub_check_clients(); |
ac60cc18 | 1480 | |
35277d14 SH |
1481 | QTAILQ_FOREACH(nc, &net_clients, next) { |
1482 | if (!nc->peer) { | |
8297be80 | 1483 | warn_report("%s %s has no peer", |
b62e39b4 AF |
1484 | nc->info->type == NET_CLIENT_DRIVER_NIC |
1485 | ? "nic" : "netdev", | |
1486 | nc->name); | |
efe32fdd MA |
1487 | } |
1488 | } | |
48e2faf2 PM |
1489 | |
1490 | /* Check that all NICs requested via -net nic actually got created. | |
1491 | * NICs created via -device don't need to be checked here because | |
1492 | * they are always instantiated. | |
1493 | */ | |
1494 | for (i = 0; i < MAX_NICS; i++) { | |
1495 | NICInfo *nd = &nd_table[i]; | |
1496 | if (nd->used && !nd->instantiated) { | |
8297be80 AF |
1497 | warn_report("requested NIC (%s, model %s) " |
1498 | "was not created (not supported by this machine?)", | |
1499 | nd->name ? nd->name : "anonymous", | |
1500 | nd->model ? nd->model : "unspecified"); | |
48e2faf2 PM |
1501 | } |
1502 | } | |
63a01ef8 | 1503 | } |
dc1c9fe8 | 1504 | |
28d0de7a | 1505 | static int net_init_client(void *dummy, QemuOpts *opts, Error **errp) |
dc1c9fe8 | 1506 | { |
34f708b0 | 1507 | return net_client_init(opts, false, errp); |
f6b134ac MM |
1508 | } |
1509 | ||
28d0de7a | 1510 | static int net_init_netdev(void *dummy, QemuOpts *opts, Error **errp) |
f6b134ac | 1511 | { |
34f708b0 | 1512 | return net_client_init(opts, true, errp); |
dc1c9fe8 | 1513 | } |
4559a1db | 1514 | |
78cd6f7b TH |
1515 | /* For the convenience "--nic" parameter */ |
1516 | static int net_param_nic(void *dummy, QemuOpts *opts, Error **errp) | |
1517 | { | |
1518 | char *mac, *nd_id; | |
1519 | int idx, ret; | |
1520 | NICInfo *ni; | |
1521 | const char *type; | |
1522 | ||
1523 | type = qemu_opt_get(opts, "type"); | |
1524 | if (type && g_str_equal(type, "none")) { | |
1525 | return 0; /* Nothing to do, default_net is cleared in vl.c */ | |
1526 | } | |
1527 | ||
1528 | idx = nic_get_free_idx(); | |
1529 | if (idx == -1 || nb_nics >= MAX_NICS) { | |
1530 | error_setg(errp, "no more on-board/default NIC slots available"); | |
4559a1db LC |
1531 | return -1; |
1532 | } | |
1533 | ||
78cd6f7b TH |
1534 | if (!type) { |
1535 | qemu_opt_set(opts, "type", "user", &error_abort); | |
1536 | } | |
1537 | ||
1538 | ni = &nd_table[idx]; | |
1539 | memset(ni, 0, sizeof(*ni)); | |
1540 | ni->model = qemu_opt_get_del(opts, "model"); | |
1541 | ||
1542 | /* Create an ID if the user did not specify one */ | |
1543 | nd_id = g_strdup(qemu_opts_id(opts)); | |
1544 | if (!nd_id) { | |
1545 | nd_id = g_strdup_printf("__org.qemu.nic%i\n", idx); | |
1546 | qemu_opts_set_id(opts, nd_id); | |
1547 | } | |
1548 | ||
1549 | /* Handle MAC address */ | |
1550 | mac = qemu_opt_get_del(opts, "mac"); | |
1551 | if (mac) { | |
1552 | ret = net_parse_macaddr(ni->macaddr.a, mac); | |
1553 | g_free(mac); | |
1554 | if (ret) { | |
1555 | error_setg(errp, "invalid syntax for ethernet address"); | |
9d946191 | 1556 | goto out; |
78cd6f7b TH |
1557 | } |
1558 | if (is_multicast_ether_addr(ni->macaddr.a)) { | |
1559 | error_setg(errp, "NIC cannot have multicast MAC address"); | |
9d946191 TH |
1560 | ret = -1; |
1561 | goto out; | |
78cd6f7b TH |
1562 | } |
1563 | } | |
1564 | qemu_macaddr_default_if_unset(&ni->macaddr); | |
1565 | ||
1566 | ret = net_client_init(opts, true, errp); | |
1567 | if (ret == 0) { | |
1568 | ni->netdev = qemu_find_netdev(nd_id); | |
1569 | ni->used = true; | |
1570 | nb_nics++; | |
1571 | } | |
1572 | ||
9d946191 | 1573 | out: |
78cd6f7b | 1574 | g_free(nd_id); |
4559a1db | 1575 | return ret; |
dc1c9fe8 MM |
1576 | } |
1577 | ||
34f708b0 | 1578 | int net_init_clients(Error **errp) |
dc1c9fe8 | 1579 | { |
ca77d85e MT |
1580 | net_change_state_entry = |
1581 | qemu_add_vm_change_state_handler(net_vm_change_state_handler, NULL); | |
1582 | ||
94878994 | 1583 | QTAILQ_INIT(&net_clients); |
5610c3aa | 1584 | |
28d0de7a | 1585 | if (qemu_opts_foreach(qemu_find_opts("netdev"), |
34f708b0 | 1586 | net_init_netdev, NULL, errp)) { |
f6b134ac | 1587 | return -1; |
a4c7367f | 1588 | } |
f6b134ac | 1589 | |
78cd6f7b TH |
1590 | if (qemu_opts_foreach(qemu_find_opts("nic"), net_param_nic, NULL, errp)) { |
1591 | return -1; | |
1592 | } | |
1593 | ||
34f708b0 | 1594 | if (qemu_opts_foreach(qemu_find_opts("net"), net_init_client, NULL, errp)) { |
dc1c9fe8 MM |
1595 | return -1; |
1596 | } | |
1597 | ||
dc1c9fe8 MM |
1598 | return 0; |
1599 | } | |
1600 | ||
7f161aae | 1601 | int net_client_parse(QemuOptsList *opts_list, const char *optarg) |
dc1c9fe8 | 1602 | { |
70b94331 | 1603 | if (!qemu_opts_parse_noisily(opts_list, optarg, true)) { |
dc1c9fe8 MM |
1604 | return -1; |
1605 | } | |
1606 | ||
1607 | return 0; | |
1608 | } | |
7fc8d918 JW |
1609 | |
1610 | /* From FreeBSD */ | |
1611 | /* XXX: optimize */ | |
eaba8f34 | 1612 | uint32_t net_crc32(const uint8_t *p, int len) |
7fc8d918 JW |
1613 | { |
1614 | uint32_t crc; | |
1615 | int carry, i, j; | |
1616 | uint8_t b; | |
1617 | ||
1618 | crc = 0xffffffff; | |
eaba8f34 MCA |
1619 | for (i = 0; i < len; i++) { |
1620 | b = *p++; | |
7fc8d918 JW |
1621 | for (j = 0; j < 8; j++) { |
1622 | carry = ((crc & 0x80000000L) ? 1 : 0) ^ (b & 0x01); | |
1623 | crc <<= 1; | |
1624 | b >>= 1; | |
1625 | if (carry) { | |
eaba8f34 | 1626 | crc = ((crc ^ POLYNOMIAL_BE) | carry); |
7fc8d918 JW |
1627 | } |
1628 | } | |
1629 | } | |
eaba8f34 MCA |
1630 | |
1631 | return crc; | |
1632 | } | |
1633 | ||
f1a7deb9 MCA |
1634 | uint32_t net_crc32_le(const uint8_t *p, int len) |
1635 | { | |
1636 | uint32_t crc; | |
1637 | int carry, i, j; | |
1638 | uint8_t b; | |
1639 | ||
1640 | crc = 0xffffffff; | |
1641 | for (i = 0; i < len; i++) { | |
1642 | b = *p++; | |
1643 | for (j = 0; j < 8; j++) { | |
1644 | carry = (crc & 0x1) ^ (b & 0x01); | |
1645 | crc >>= 1; | |
1646 | b >>= 1; | |
1647 | if (carry) { | |
1648 | crc ^= POLYNOMIAL_LE; | |
1649 | } | |
1650 | } | |
1651 | } | |
1652 | ||
1653 | return crc; | |
1654 | } | |
1655 | ||
4d454574 PB |
1656 | QemuOptsList qemu_netdev_opts = { |
1657 | .name = "netdev", | |
1658 | .implied_opt_name = "type", | |
1659 | .head = QTAILQ_HEAD_INITIALIZER(qemu_netdev_opts.head), | |
78cd6f7b TH |
1660 | .desc = { |
1661 | /* | |
1662 | * no elements => accept any params | |
1663 | * validation will happen later | |
1664 | */ | |
1665 | { /* end of list */ } | |
1666 | }, | |
1667 | }; | |
1668 | ||
1669 | QemuOptsList qemu_nic_opts = { | |
1670 | .name = "nic", | |
1671 | .implied_opt_name = "type", | |
1672 | .head = QTAILQ_HEAD_INITIALIZER(qemu_nic_opts.head), | |
4d454574 PB |
1673 | .desc = { |
1674 | /* | |
1675 | * no elements => accept any params | |
1676 | * validation will happen later | |
1677 | */ | |
1678 | { /* end of list */ } | |
1679 | }, | |
1680 | }; | |
1681 | ||
1682 | QemuOptsList qemu_net_opts = { | |
1683 | .name = "net", | |
1684 | .implied_opt_name = "type", | |
1685 | .head = QTAILQ_HEAD_INITIALIZER(qemu_net_opts.head), | |
1686 | .desc = { | |
1687 | /* | |
1688 | * no elements => accept any params | |
1689 | * validation will happen later | |
1690 | */ | |
1691 | { /* end of list */ } | |
1692 | }, | |
1693 | }; | |
16a3df40 ZC |
1694 | |
1695 | void net_socket_rs_init(SocketReadState *rs, | |
3cde5ea2 ZC |
1696 | SocketReadStateFinalize *finalize, |
1697 | bool vnet_hdr) | |
16a3df40 ZC |
1698 | { |
1699 | rs->state = 0; | |
3cde5ea2 | 1700 | rs->vnet_hdr = vnet_hdr; |
16a3df40 ZC |
1701 | rs->index = 0; |
1702 | rs->packet_len = 0; | |
3cde5ea2 | 1703 | rs->vnet_hdr_len = 0; |
16a3df40 ZC |
1704 | memset(rs->buf, 0, sizeof(rs->buf)); |
1705 | rs->finalize = finalize; | |
1706 | } | |
1707 | ||
1708 | /* | |
1709 | * Returns | |
e9e0a585 ZC |
1710 | * 0: success |
1711 | * -1: error occurs | |
16a3df40 ZC |
1712 | */ |
1713 | int net_fill_rstate(SocketReadState *rs, const uint8_t *buf, int size) | |
1714 | { | |
1715 | unsigned int l; | |
1716 | ||
1717 | while (size > 0) { | |
3cde5ea2 ZC |
1718 | /* Reassemble a packet from the network. |
1719 | * 0 = getting length. | |
1720 | * 1 = getting vnet header length. | |
1721 | * 2 = getting data. | |
1722 | */ | |
1723 | switch (rs->state) { | |
16a3df40 ZC |
1724 | case 0: |
1725 | l = 4 - rs->index; | |
1726 | if (l > size) { | |
1727 | l = size; | |
1728 | } | |
1729 | memcpy(rs->buf + rs->index, buf, l); | |
1730 | buf += l; | |
1731 | size -= l; | |
1732 | rs->index += l; | |
1733 | if (rs->index == 4) { | |
1734 | /* got length */ | |
1735 | rs->packet_len = ntohl(*(uint32_t *)rs->buf); | |
1736 | rs->index = 0; | |
3cde5ea2 ZC |
1737 | if (rs->vnet_hdr) { |
1738 | rs->state = 1; | |
1739 | } else { | |
1740 | rs->state = 2; | |
1741 | rs->vnet_hdr_len = 0; | |
1742 | } | |
16a3df40 ZC |
1743 | } |
1744 | break; | |
1745 | case 1: | |
3cde5ea2 ZC |
1746 | l = 4 - rs->index; |
1747 | if (l > size) { | |
1748 | l = size; | |
1749 | } | |
1750 | memcpy(rs->buf + rs->index, buf, l); | |
1751 | buf += l; | |
1752 | size -= l; | |
1753 | rs->index += l; | |
1754 | if (rs->index == 4) { | |
1755 | /* got vnet header length */ | |
1756 | rs->vnet_hdr_len = ntohl(*(uint32_t *)rs->buf); | |
1757 | rs->index = 0; | |
1758 | rs->state = 2; | |
1759 | } | |
1760 | break; | |
1761 | case 2: | |
16a3df40 ZC |
1762 | l = rs->packet_len - rs->index; |
1763 | if (l > size) { | |
1764 | l = size; | |
1765 | } | |
1766 | if (rs->index + l <= sizeof(rs->buf)) { | |
1767 | memcpy(rs->buf + rs->index, buf, l); | |
1768 | } else { | |
1769 | fprintf(stderr, "serious error: oversized packet received," | |
1770 | "connection terminated.\n"); | |
1771 | rs->index = rs->state = 0; | |
1772 | return -1; | |
1773 | } | |
1774 | ||
1775 | rs->index += l; | |
1776 | buf += l; | |
1777 | size -= l; | |
1778 | if (rs->index >= rs->packet_len) { | |
1779 | rs->index = 0; | |
1780 | rs->state = 0; | |
e79cd406 DB |
1781 | assert(rs->finalize); |
1782 | rs->finalize(rs); | |
16a3df40 ZC |
1783 | } |
1784 | break; | |
1785 | } | |
1786 | } | |
e9e0a585 ZC |
1787 | |
1788 | assert(size == 0); | |
16a3df40 ZC |
1789 | return 0; |
1790 | } |