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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 | ||
bcd4dfd6 MZ |
67 | int parse_host_port(struct sockaddr_in *saddr, const char *str, |
68 | Error **errp) | |
63a01ef8 | 69 | { |
add99347 | 70 | gchar **substrings; |
63a01ef8 | 71 | struct hostent *he; |
add99347 SG |
72 | const char *addr, *p, *r; |
73 | int port, ret = 0; | |
63a01ef8 | 74 | |
add99347 SG |
75 | substrings = g_strsplit(str, ":", 2); |
76 | if (!substrings || !substrings[0] || !substrings[1]) { | |
bcd4dfd6 MZ |
77 | error_setg(errp, "host address '%s' doesn't contain ':' " |
78 | "separating host from port", str); | |
add99347 SG |
79 | ret = -1; |
80 | goto out; | |
bcd4dfd6 | 81 | } |
add99347 SG |
82 | |
83 | addr = substrings[0]; | |
84 | p = substrings[1]; | |
85 | ||
63a01ef8 | 86 | saddr->sin_family = AF_INET; |
add99347 | 87 | if (addr[0] == '\0') { |
63a01ef8 AL |
88 | saddr->sin_addr.s_addr = 0; |
89 | } else { | |
add99347 SG |
90 | if (qemu_isdigit(addr[0])) { |
91 | if (!inet_aton(addr, &saddr->sin_addr)) { | |
bcd4dfd6 | 92 | error_setg(errp, "host address '%s' is not a valid " |
add99347 SG |
93 | "IPv4 address", addr); |
94 | ret = -1; | |
95 | goto out; | |
bcd4dfd6 | 96 | } |
63a01ef8 | 97 | } else { |
add99347 | 98 | he = gethostbyname(addr); |
bcd4dfd6 | 99 | if (he == NULL) { |
add99347 SG |
100 | error_setg(errp, "can't resolve host address '%s'", addr); |
101 | ret = -1; | |
102 | goto out; | |
bcd4dfd6 | 103 | } |
63a01ef8 AL |
104 | saddr->sin_addr = *(struct in_addr *)he->h_addr; |
105 | } | |
106 | } | |
107 | port = strtol(p, (char **)&r, 0); | |
bcd4dfd6 MZ |
108 | if (r == p) { |
109 | error_setg(errp, "port number '%s' is invalid", p); | |
add99347 SG |
110 | ret = -1; |
111 | goto out; | |
bcd4dfd6 | 112 | } |
63a01ef8 | 113 | saddr->sin_port = htons(port); |
add99347 SG |
114 | |
115 | out: | |
116 | g_strfreev(substrings); | |
117 | return ret; | |
63a01ef8 AL |
118 | } |
119 | ||
890ee6ab SF |
120 | char *qemu_mac_strdup_printf(const uint8_t *macaddr) |
121 | { | |
122 | return g_strdup_printf("%.2x:%.2x:%.2x:%.2x:%.2x:%.2x", | |
123 | macaddr[0], macaddr[1], macaddr[2], | |
124 | macaddr[3], macaddr[4], macaddr[5]); | |
125 | } | |
126 | ||
35277d14 | 127 | void qemu_format_nic_info_str(NetClientState *nc, uint8_t macaddr[6]) |
7cb7434b | 128 | { |
35277d14 | 129 | snprintf(nc->info_str, sizeof(nc->info_str), |
4dda4063 | 130 | "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x", |
35277d14 | 131 | nc->model, |
7cb7434b AL |
132 | macaddr[0], macaddr[1], macaddr[2], |
133 | macaddr[3], macaddr[4], macaddr[5]); | |
134 | } | |
135 | ||
2bc22a58 SZ |
136 | static int mac_table[256] = {0}; |
137 | ||
138 | static void qemu_macaddr_set_used(MACAddr *macaddr) | |
139 | { | |
140 | int index; | |
141 | ||
142 | for (index = 0x56; index < 0xFF; index++) { | |
143 | if (macaddr->a[5] == index) { | |
144 | mac_table[index]++; | |
145 | } | |
146 | } | |
147 | } | |
148 | ||
149 | static void qemu_macaddr_set_free(MACAddr *macaddr) | |
150 | { | |
151 | int index; | |
152 | static const MACAddr base = { .a = { 0x52, 0x54, 0x00, 0x12, 0x34, 0 } }; | |
153 | ||
154 | if (memcmp(macaddr->a, &base.a, (sizeof(base.a) - 1)) != 0) { | |
155 | return; | |
156 | } | |
157 | for (index = 0x56; index < 0xFF; index++) { | |
158 | if (macaddr->a[5] == index) { | |
159 | mac_table[index]--; | |
160 | } | |
161 | } | |
162 | } | |
163 | ||
164 | static int qemu_macaddr_get_free(void) | |
165 | { | |
166 | int index; | |
167 | ||
168 | for (index = 0x56; index < 0xFF; index++) { | |
169 | if (mac_table[index] == 0) { | |
170 | return index; | |
171 | } | |
172 | } | |
173 | ||
174 | return -1; | |
175 | } | |
176 | ||
76d32cba GH |
177 | void qemu_macaddr_default_if_unset(MACAddr *macaddr) |
178 | { | |
76d32cba | 179 | static const MACAddr zero = { .a = { 0,0,0,0,0,0 } }; |
2bc22a58 SZ |
180 | static const MACAddr base = { .a = { 0x52, 0x54, 0x00, 0x12, 0x34, 0 } }; |
181 | ||
182 | if (memcmp(macaddr, &zero, sizeof(zero)) != 0) { | |
183 | if (memcmp(macaddr->a, &base.a, (sizeof(base.a) - 1)) != 0) { | |
184 | return; | |
185 | } else { | |
186 | qemu_macaddr_set_used(macaddr); | |
187 | return; | |
188 | } | |
189 | } | |
76d32cba | 190 | |
76d32cba GH |
191 | macaddr->a[0] = 0x52; |
192 | macaddr->a[1] = 0x54; | |
193 | macaddr->a[2] = 0x00; | |
194 | macaddr->a[3] = 0x12; | |
195 | macaddr->a[4] = 0x34; | |
2bc22a58 SZ |
196 | macaddr->a[5] = qemu_macaddr_get_free(); |
197 | qemu_macaddr_set_used(macaddr); | |
76d32cba GH |
198 | } |
199 | ||
d33d93b2 SH |
200 | /** |
201 | * Generate a name for net client | |
202 | * | |
c963530a | 203 | * Only net clients created with the legacy -net option and NICs need this. |
d33d93b2 | 204 | */ |
35277d14 | 205 | static char *assign_name(NetClientState *nc1, const char *model) |
676cff29 | 206 | { |
35277d14 | 207 | NetClientState *nc; |
676cff29 AL |
208 | int id = 0; |
209 | ||
35277d14 SH |
210 | QTAILQ_FOREACH(nc, &net_clients, next) { |
211 | if (nc == nc1) { | |
d33d93b2 | 212 | continue; |
5610c3aa | 213 | } |
c963530a | 214 | if (strcmp(nc->model, model) == 0) { |
53e51d85 MA |
215 | id++; |
216 | } | |
217 | } | |
218 | ||
4bf2c138 | 219 | return g_strdup_printf("%s.%d", model, id); |
676cff29 AL |
220 | } |
221 | ||
f7860455 JW |
222 | static void qemu_net_client_destructor(NetClientState *nc) |
223 | { | |
224 | g_free(nc); | |
225 | } | |
25c01bd1 JW |
226 | static ssize_t qemu_deliver_packet_iov(NetClientState *sender, |
227 | unsigned flags, | |
228 | const struct iovec *iov, | |
229 | int iovcnt, | |
230 | void *opaque); | |
f7860455 | 231 | |
18a1541a JW |
232 | static void qemu_net_client_setup(NetClientState *nc, |
233 | NetClientInfo *info, | |
234 | NetClientState *peer, | |
235 | const char *model, | |
f7860455 JW |
236 | const char *name, |
237 | NetClientDestructor *destructor) | |
63a01ef8 | 238 | { |
35277d14 SH |
239 | nc->info = info; |
240 | nc->model = g_strdup(model); | |
45460d1a | 241 | if (name) { |
35277d14 | 242 | nc->name = g_strdup(name); |
45460d1a | 243 | } else { |
35277d14 | 244 | nc->name = assign_name(nc, model); |
45460d1a | 245 | } |
5610c3aa | 246 | |
ab5f3f84 SH |
247 | if (peer) { |
248 | assert(!peer->peer); | |
35277d14 SH |
249 | nc->peer = peer; |
250 | peer->peer = nc; | |
d80b9fc6 | 251 | } |
35277d14 | 252 | QTAILQ_INSERT_TAIL(&net_clients, nc, next); |
63a01ef8 | 253 | |
3e033a46 | 254 | nc->incoming_queue = qemu_new_net_queue(qemu_deliver_packet_iov, nc); |
f7860455 | 255 | nc->destructor = destructor; |
fdccce45 | 256 | QTAILQ_INIT(&nc->filters); |
18a1541a JW |
257 | } |
258 | ||
259 | NetClientState *qemu_new_net_client(NetClientInfo *info, | |
260 | NetClientState *peer, | |
261 | const char *model, | |
262 | const char *name) | |
263 | { | |
264 | NetClientState *nc; | |
265 | ||
266 | assert(info->size >= sizeof(NetClientState)); | |
267 | ||
268 | nc = g_malloc0(info->size); | |
f7860455 JW |
269 | qemu_net_client_setup(nc, info, peer, model, name, |
270 | qemu_net_client_destructor); | |
18a1541a | 271 | |
35277d14 | 272 | return nc; |
63a01ef8 AL |
273 | } |
274 | ||
ebef2c09 MM |
275 | NICState *qemu_new_nic(NetClientInfo *info, |
276 | NICConf *conf, | |
277 | const char *model, | |
278 | const char *name, | |
279 | void *opaque) | |
280 | { | |
1ceef9f2 | 281 | NetClientState **peers = conf->peers.ncs; |
ebef2c09 | 282 | NICState *nic; |
575a1c0e | 283 | int i, queues = MAX(1, conf->peers.queues); |
ebef2c09 | 284 | |
f394b2e2 | 285 | assert(info->type == NET_CLIENT_DRIVER_NIC); |
ebef2c09 MM |
286 | assert(info->size >= sizeof(NICState)); |
287 | ||
f6b26cf2 JW |
288 | nic = g_malloc0(info->size + sizeof(NetClientState) * queues); |
289 | nic->ncs = (void *)nic + info->size; | |
ebef2c09 MM |
290 | nic->conf = conf; |
291 | nic->opaque = opaque; | |
292 | ||
f6b26cf2 JW |
293 | for (i = 0; i < queues; i++) { |
294 | qemu_net_client_setup(&nic->ncs[i], info, peers[i], model, name, | |
1ceef9f2 JW |
295 | NULL); |
296 | nic->ncs[i].queue_index = i; | |
297 | } | |
298 | ||
ebef2c09 MM |
299 | return nic; |
300 | } | |
301 | ||
1ceef9f2 JW |
302 | NetClientState *qemu_get_subqueue(NICState *nic, int queue_index) |
303 | { | |
f6b26cf2 | 304 | return nic->ncs + queue_index; |
1ceef9f2 JW |
305 | } |
306 | ||
b356f76d JW |
307 | NetClientState *qemu_get_queue(NICState *nic) |
308 | { | |
1ceef9f2 | 309 | return qemu_get_subqueue(nic, 0); |
b356f76d JW |
310 | } |
311 | ||
cc1f0f45 JW |
312 | NICState *qemu_get_nic(NetClientState *nc) |
313 | { | |
1ceef9f2 JW |
314 | NetClientState *nc0 = nc - nc->queue_index; |
315 | ||
f6b26cf2 | 316 | return (NICState *)((void *)nc0 - nc->info->size); |
cc1f0f45 JW |
317 | } |
318 | ||
319 | void *qemu_get_nic_opaque(NetClientState *nc) | |
320 | { | |
321 | NICState *nic = qemu_get_nic(nc); | |
322 | ||
323 | return nic->opaque; | |
324 | } | |
325 | ||
b20c6b9e | 326 | static void qemu_cleanup_net_client(NetClientState *nc) |
63a01ef8 | 327 | { |
35277d14 | 328 | QTAILQ_REMOVE(&net_clients, nc, next); |
63a01ef8 | 329 | |
cc2a9043 AF |
330 | if (nc->info->cleanup) { |
331 | nc->info->cleanup(nc); | |
332 | } | |
a083a89d | 333 | } |
5610c3aa | 334 | |
b20c6b9e | 335 | static void qemu_free_net_client(NetClientState *nc) |
a083a89d | 336 | { |
067404be JK |
337 | if (nc->incoming_queue) { |
338 | qemu_del_net_queue(nc->incoming_queue); | |
a005d073 | 339 | } |
35277d14 SH |
340 | if (nc->peer) { |
341 | nc->peer->peer = NULL; | |
a083a89d | 342 | } |
35277d14 SH |
343 | g_free(nc->name); |
344 | g_free(nc->model); | |
f7860455 JW |
345 | if (nc->destructor) { |
346 | nc->destructor(nc); | |
347 | } | |
63a01ef8 AL |
348 | } |
349 | ||
b20c6b9e | 350 | void qemu_del_net_client(NetClientState *nc) |
a083a89d | 351 | { |
1ceef9f2 JW |
352 | NetClientState *ncs[MAX_QUEUE_NUM]; |
353 | int queues, i; | |
fdccce45 | 354 | NetFilterState *nf, *next; |
1ceef9f2 | 355 | |
f394b2e2 | 356 | assert(nc->info->type != NET_CLIENT_DRIVER_NIC); |
7fb43911 | 357 | |
1ceef9f2 JW |
358 | /* If the NetClientState belongs to a multiqueue backend, we will change all |
359 | * other NetClientStates also. | |
360 | */ | |
361 | queues = qemu_find_net_clients_except(nc->name, ncs, | |
f394b2e2 | 362 | NET_CLIENT_DRIVER_NIC, |
1ceef9f2 JW |
363 | MAX_QUEUE_NUM); |
364 | assert(queues != 0); | |
365 | ||
fdccce45 YH |
366 | QTAILQ_FOREACH_SAFE(nf, &nc->filters, next, next) { |
367 | object_unparent(OBJECT(nf)); | |
368 | } | |
369 | ||
a083a89d | 370 | /* If there is a peer NIC, delete and cleanup client, but do not free. */ |
f394b2e2 | 371 | if (nc->peer && nc->peer->info->type == NET_CLIENT_DRIVER_NIC) { |
cc1f0f45 | 372 | NICState *nic = qemu_get_nic(nc->peer); |
a083a89d MT |
373 | if (nic->peer_deleted) { |
374 | return; | |
375 | } | |
376 | nic->peer_deleted = true; | |
1ceef9f2 JW |
377 | |
378 | for (i = 0; i < queues; i++) { | |
379 | ncs[i]->peer->link_down = true; | |
380 | } | |
381 | ||
35277d14 SH |
382 | if (nc->peer->info->link_status_changed) { |
383 | nc->peer->info->link_status_changed(nc->peer); | |
a083a89d | 384 | } |
1ceef9f2 JW |
385 | |
386 | for (i = 0; i < queues; i++) { | |
387 | qemu_cleanup_net_client(ncs[i]); | |
388 | } | |
389 | ||
a083a89d MT |
390 | return; |
391 | } | |
392 | ||
1ceef9f2 JW |
393 | for (i = 0; i < queues; i++) { |
394 | qemu_cleanup_net_client(ncs[i]); | |
395 | qemu_free_net_client(ncs[i]); | |
396 | } | |
948ecf21 JW |
397 | } |
398 | ||
399 | void qemu_del_nic(NICState *nic) | |
400 | { | |
575a1c0e | 401 | int i, queues = MAX(nic->conf->peers.queues, 1); |
1ceef9f2 | 402 | |
2bc22a58 SZ |
403 | qemu_macaddr_set_free(&nic->conf->macaddr); |
404 | ||
a083a89d | 405 | /* If this is a peer NIC and peer has already been deleted, free it now. */ |
1ceef9f2 JW |
406 | if (nic->peer_deleted) { |
407 | for (i = 0; i < queues; i++) { | |
408 | qemu_free_net_client(qemu_get_subqueue(nic, i)->peer); | |
1a609520 JK |
409 | } |
410 | } | |
1a609520 | 411 | |
1ceef9f2 JW |
412 | for (i = queues - 1; i >= 0; i--) { |
413 | NetClientState *nc = qemu_get_subqueue(nic, i); | |
414 | ||
415 | qemu_cleanup_net_client(nc); | |
416 | qemu_free_net_client(nc); | |
417 | } | |
f6b26cf2 JW |
418 | |
419 | g_free(nic); | |
1a609520 JK |
420 | } |
421 | ||
57f9ef17 MM |
422 | void qemu_foreach_nic(qemu_nic_foreach func, void *opaque) |
423 | { | |
4e68f7a0 | 424 | NetClientState *nc; |
57f9ef17 | 425 | |
94878994 | 426 | QTAILQ_FOREACH(nc, &net_clients, next) { |
f394b2e2 | 427 | if (nc->info->type == NET_CLIENT_DRIVER_NIC) { |
1ceef9f2 JW |
428 | if (nc->queue_index == 0) { |
429 | func(qemu_get_nic(nc), opaque); | |
430 | } | |
57f9ef17 MM |
431 | } |
432 | } | |
57f9ef17 MM |
433 | } |
434 | ||
d6085e3a | 435 | bool qemu_has_ufo(NetClientState *nc) |
1f55ac45 | 436 | { |
d6085e3a | 437 | if (!nc || !nc->info->has_ufo) { |
1f55ac45 VM |
438 | return false; |
439 | } | |
440 | ||
d6085e3a | 441 | return nc->info->has_ufo(nc); |
1f55ac45 VM |
442 | } |
443 | ||
d6085e3a | 444 | bool qemu_has_vnet_hdr(NetClientState *nc) |
1f55ac45 | 445 | { |
d6085e3a | 446 | if (!nc || !nc->info->has_vnet_hdr) { |
1f55ac45 VM |
447 | return false; |
448 | } | |
449 | ||
d6085e3a | 450 | return nc->info->has_vnet_hdr(nc); |
1f55ac45 VM |
451 | } |
452 | ||
d6085e3a | 453 | bool qemu_has_vnet_hdr_len(NetClientState *nc, int len) |
1f55ac45 | 454 | { |
d6085e3a | 455 | if (!nc || !nc->info->has_vnet_hdr_len) { |
1f55ac45 VM |
456 | return false; |
457 | } | |
458 | ||
d6085e3a | 459 | return nc->info->has_vnet_hdr_len(nc, len); |
1f55ac45 VM |
460 | } |
461 | ||
d6085e3a | 462 | void qemu_using_vnet_hdr(NetClientState *nc, bool enable) |
1f55ac45 | 463 | { |
d6085e3a | 464 | if (!nc || !nc->info->using_vnet_hdr) { |
1f55ac45 VM |
465 | return; |
466 | } | |
467 | ||
d6085e3a | 468 | nc->info->using_vnet_hdr(nc, enable); |
1f55ac45 VM |
469 | } |
470 | ||
d6085e3a | 471 | void qemu_set_offload(NetClientState *nc, int csum, int tso4, int tso6, |
1f55ac45 VM |
472 | int ecn, int ufo) |
473 | { | |
d6085e3a | 474 | if (!nc || !nc->info->set_offload) { |
1f55ac45 VM |
475 | return; |
476 | } | |
477 | ||
d6085e3a | 478 | nc->info->set_offload(nc, csum, tso4, tso6, ecn, ufo); |
1f55ac45 VM |
479 | } |
480 | ||
d6085e3a | 481 | void qemu_set_vnet_hdr_len(NetClientState *nc, int len) |
1f55ac45 | 482 | { |
d6085e3a | 483 | if (!nc || !nc->info->set_vnet_hdr_len) { |
1f55ac45 VM |
484 | return; |
485 | } | |
486 | ||
d6b732e9 | 487 | nc->vnet_hdr_len = len; |
d6085e3a | 488 | nc->info->set_vnet_hdr_len(nc, len); |
1f55ac45 VM |
489 | } |
490 | ||
c80cd6bb GK |
491 | int qemu_set_vnet_le(NetClientState *nc, bool is_le) |
492 | { | |
052bd52f | 493 | #ifdef HOST_WORDS_BIGENDIAN |
c80cd6bb GK |
494 | if (!nc || !nc->info->set_vnet_le) { |
495 | return -ENOSYS; | |
496 | } | |
497 | ||
498 | return nc->info->set_vnet_le(nc, is_le); | |
052bd52f MT |
499 | #else |
500 | return 0; | |
501 | #endif | |
c80cd6bb GK |
502 | } |
503 | ||
504 | int qemu_set_vnet_be(NetClientState *nc, bool is_be) | |
505 | { | |
052bd52f MT |
506 | #ifdef HOST_WORDS_BIGENDIAN |
507 | return 0; | |
508 | #else | |
c80cd6bb GK |
509 | if (!nc || !nc->info->set_vnet_be) { |
510 | return -ENOSYS; | |
511 | } | |
512 | ||
513 | return nc->info->set_vnet_be(nc, is_be); | |
052bd52f | 514 | #endif |
c80cd6bb GK |
515 | } |
516 | ||
4e68f7a0 | 517 | int qemu_can_send_packet(NetClientState *sender) |
63a01ef8 | 518 | { |
e1d64c08 HZ |
519 | int vm_running = runstate_is_running(); |
520 | ||
521 | if (!vm_running) { | |
522 | return 0; | |
523 | } | |
524 | ||
a005d073 | 525 | if (!sender->peer) { |
d80b9fc6 MM |
526 | return 1; |
527 | } | |
528 | ||
a005d073 SH |
529 | if (sender->peer->receive_disabled) { |
530 | return 0; | |
531 | } else if (sender->peer->info->can_receive && | |
532 | !sender->peer->info->can_receive(sender->peer)) { | |
533 | return 0; | |
63a01ef8 | 534 | } |
60c07d93 | 535 | return 1; |
63a01ef8 AL |
536 | } |
537 | ||
e64c770d YH |
538 | static ssize_t filter_receive_iov(NetClientState *nc, |
539 | NetFilterDirection direction, | |
540 | NetClientState *sender, | |
541 | unsigned flags, | |
542 | const struct iovec *iov, | |
543 | int iovcnt, | |
544 | NetPacketSent *sent_cb) | |
545 | { | |
546 | ssize_t ret = 0; | |
547 | NetFilterState *nf = NULL; | |
548 | ||
25aaadf0 LZ |
549 | if (direction == NET_FILTER_DIRECTION_TX) { |
550 | QTAILQ_FOREACH(nf, &nc->filters, next) { | |
551 | ret = qemu_netfilter_receive(nf, direction, sender, flags, iov, | |
552 | iovcnt, sent_cb); | |
553 | if (ret) { | |
554 | return ret; | |
555 | } | |
556 | } | |
557 | } else { | |
eae3eb3e | 558 | QTAILQ_FOREACH_REVERSE(nf, &nc->filters, next) { |
25aaadf0 LZ |
559 | ret = qemu_netfilter_receive(nf, direction, sender, flags, iov, |
560 | iovcnt, sent_cb); | |
561 | if (ret) { | |
562 | return ret; | |
563 | } | |
e64c770d YH |
564 | } |
565 | } | |
566 | ||
567 | return ret; | |
568 | } | |
569 | ||
570 | static ssize_t filter_receive(NetClientState *nc, | |
571 | NetFilterDirection direction, | |
572 | NetClientState *sender, | |
573 | unsigned flags, | |
574 | const uint8_t *data, | |
575 | size_t size, | |
576 | NetPacketSent *sent_cb) | |
577 | { | |
578 | struct iovec iov = { | |
579 | .iov_base = (void *)data, | |
580 | .iov_len = size | |
581 | }; | |
582 | ||
583 | return filter_receive_iov(nc, direction, sender, flags, &iov, 1, sent_cb); | |
584 | } | |
585 | ||
35277d14 | 586 | void qemu_purge_queued_packets(NetClientState *nc) |
8cad5516 | 587 | { |
35277d14 | 588 | if (!nc->peer) { |
d80b9fc6 | 589 | return; |
9a6ecb30 | 590 | } |
d80b9fc6 | 591 | |
067404be | 592 | qemu_net_queue_purge(nc->peer->incoming_queue, nc); |
8cad5516 MM |
593 | } |
594 | ||
ca77d85e | 595 | void qemu_flush_or_purge_queued_packets(NetClientState *nc, bool purge) |
e94667b9 | 596 | { |
35277d14 | 597 | nc->receive_disabled = 0; |
9a6ecb30 | 598 | |
f394b2e2 | 599 | if (nc->peer && nc->peer->info->type == NET_CLIENT_DRIVER_HUBPORT) { |
199ee608 LR |
600 | if (net_hub_flush(nc->peer)) { |
601 | qemu_notify_event(); | |
602 | } | |
199ee608 | 603 | } |
067404be | 604 | if (qemu_net_queue_flush(nc->incoming_queue)) { |
987a9b48 PB |
605 | /* We emptied the queue successfully, signal to the IO thread to repoll |
606 | * the file descriptor (for tap, for example). | |
607 | */ | |
608 | qemu_notify_event(); | |
ca77d85e MT |
609 | } else if (purge) { |
610 | /* Unable to empty the queue, purge remaining packets */ | |
611 | qemu_net_queue_purge(nc->incoming_queue, nc); | |
987a9b48 | 612 | } |
e94667b9 MM |
613 | } |
614 | ||
ca77d85e MT |
615 | void qemu_flush_queued_packets(NetClientState *nc) |
616 | { | |
617 | qemu_flush_or_purge_queued_packets(nc, false); | |
618 | } | |
619 | ||
4e68f7a0 | 620 | static ssize_t qemu_send_packet_async_with_flags(NetClientState *sender, |
ca77d175 MM |
621 | unsigned flags, |
622 | const uint8_t *buf, int size, | |
623 | NetPacketSent *sent_cb) | |
764a4d1d | 624 | { |
9a6ecb30 | 625 | NetQueue *queue; |
e64c770d | 626 | int ret; |
436e5e53 | 627 | |
63a01ef8 | 628 | #ifdef DEBUG_NET |
d80b9fc6 | 629 | printf("qemu_send_packet_async:\n"); |
a1555559 | 630 | qemu_hexdump((const char *)buf, stdout, "net", size); |
63a01ef8 | 631 | #endif |
f3b6c7fc | 632 | |
a005d073 | 633 | if (sender->link_down || !sender->peer) { |
9a6ecb30 MM |
634 | return size; |
635 | } | |
636 | ||
e64c770d YH |
637 | /* Let filters handle the packet first */ |
638 | ret = filter_receive(sender, NET_FILTER_DIRECTION_TX, | |
639 | sender, flags, buf, size, sent_cb); | |
640 | if (ret) { | |
641 | return ret; | |
642 | } | |
643 | ||
644 | ret = filter_receive(sender->peer, NET_FILTER_DIRECTION_RX, | |
645 | sender, flags, buf, size, sent_cb); | |
646 | if (ret) { | |
647 | return ret; | |
648 | } | |
649 | ||
067404be | 650 | queue = sender->peer->incoming_queue; |
9a6ecb30 | 651 | |
ca77d175 MM |
652 | return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb); |
653 | } | |
654 | ||
4e68f7a0 | 655 | ssize_t qemu_send_packet_async(NetClientState *sender, |
ca77d175 MM |
656 | const uint8_t *buf, int size, |
657 | NetPacketSent *sent_cb) | |
658 | { | |
659 | return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE, | |
660 | buf, size, sent_cb); | |
f3b6c7fc MM |
661 | } |
662 | ||
625a526b | 663 | ssize_t qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size) |
f3b6c7fc | 664 | { |
625a526b | 665 | return qemu_send_packet_async(nc, buf, size, NULL); |
63a01ef8 AL |
666 | } |
667 | ||
35277d14 | 668 | ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size) |
ca77d175 | 669 | { |
35277d14 | 670 | return qemu_send_packet_async_with_flags(nc, QEMU_NET_PACKET_FLAG_RAW, |
ca77d175 MM |
671 | buf, size, NULL); |
672 | } | |
673 | ||
35277d14 | 674 | static ssize_t nc_sendv_compat(NetClientState *nc, const struct iovec *iov, |
fefe2a78 | 675 | int iovcnt, unsigned flags) |
fbe78f4f | 676 | { |
74044c8f | 677 | uint8_t *buf = NULL; |
fefe2a78 | 678 | uint8_t *buffer; |
ce053661 | 679 | size_t offset; |
74044c8f | 680 | ssize_t ret; |
fbe78f4f | 681 | |
fefe2a78 YH |
682 | if (iovcnt == 1) { |
683 | buffer = iov[0].iov_base; | |
684 | offset = iov[0].iov_len; | |
685 | } else { | |
47f9f158 PL |
686 | offset = iov_size(iov, iovcnt); |
687 | if (offset > NET_BUFSIZE) { | |
688 | return -1; | |
689 | } | |
690 | buf = g_malloc(offset); | |
fefe2a78 | 691 | buffer = buf; |
47f9f158 | 692 | offset = iov_to_buf(iov, iovcnt, 0, buf, offset); |
fefe2a78 | 693 | } |
fbe78f4f | 694 | |
fefe2a78 | 695 | if (flags & QEMU_NET_PACKET_FLAG_RAW && nc->info->receive_raw) { |
74044c8f | 696 | ret = nc->info->receive_raw(nc, buffer, offset); |
fefe2a78 | 697 | } else { |
74044c8f | 698 | ret = nc->info->receive(nc, buffer, offset); |
fefe2a78 | 699 | } |
74044c8f PD |
700 | |
701 | g_free(buf); | |
702 | return ret; | |
fbe78f4f AL |
703 | } |
704 | ||
25c01bd1 JW |
705 | static ssize_t qemu_deliver_packet_iov(NetClientState *sender, |
706 | unsigned flags, | |
707 | const struct iovec *iov, | |
708 | int iovcnt, | |
709 | void *opaque) | |
9a6ecb30 | 710 | { |
35277d14 | 711 | NetClientState *nc = opaque; |
c67f5dc1 | 712 | int ret; |
9a6ecb30 | 713 | |
1592a994 | 714 | |
35277d14 | 715 | if (nc->link_down) { |
25c01bd1 | 716 | return iov_size(iov, iovcnt); |
9a6ecb30 MM |
717 | } |
718 | ||
c67f5dc1 SH |
719 | if (nc->receive_disabled) { |
720 | return 0; | |
721 | } | |
722 | ||
ca1ee3d6 | 723 | if (nc->info->receive_iov && !(flags & QEMU_NET_PACKET_FLAG_RAW)) { |
c67f5dc1 | 724 | ret = nc->info->receive_iov(nc, iov, iovcnt); |
9a6ecb30 | 725 | } else { |
fefe2a78 | 726 | ret = nc_sendv_compat(nc, iov, iovcnt, flags); |
c67f5dc1 SH |
727 | } |
728 | ||
729 | if (ret == 0) { | |
730 | nc->receive_disabled = 1; | |
e94667b9 | 731 | } |
c67f5dc1 SH |
732 | |
733 | return ret; | |
e94667b9 MM |
734 | } |
735 | ||
4e68f7a0 | 736 | ssize_t qemu_sendv_packet_async(NetClientState *sender, |
f3b6c7fc MM |
737 | const struct iovec *iov, int iovcnt, |
738 | NetPacketSent *sent_cb) | |
e94667b9 | 739 | { |
9a6ecb30 | 740 | NetQueue *queue; |
25c01bd1 | 741 | size_t size = iov_size(iov, iovcnt); |
e64c770d | 742 | int ret; |
9a6ecb30 | 743 | |
25c01bd1 JW |
744 | if (size > NET_BUFSIZE) { |
745 | return size; | |
746 | } | |
747 | ||
a005d073 | 748 | if (sender->link_down || !sender->peer) { |
25c01bd1 | 749 | return size; |
e94667b9 MM |
750 | } |
751 | ||
e64c770d YH |
752 | /* Let filters handle the packet first */ |
753 | ret = filter_receive_iov(sender, NET_FILTER_DIRECTION_TX, sender, | |
754 | QEMU_NET_PACKET_FLAG_NONE, iov, iovcnt, sent_cb); | |
755 | if (ret) { | |
756 | return ret; | |
757 | } | |
758 | ||
759 | ret = filter_receive_iov(sender->peer, NET_FILTER_DIRECTION_RX, sender, | |
760 | QEMU_NET_PACKET_FLAG_NONE, iov, iovcnt, sent_cb); | |
761 | if (ret) { | |
762 | return ret; | |
763 | } | |
764 | ||
067404be | 765 | queue = sender->peer->incoming_queue; |
9a6ecb30 | 766 | |
c0b8e49c MM |
767 | return qemu_net_queue_send_iov(queue, sender, |
768 | QEMU_NET_PACKET_FLAG_NONE, | |
769 | iov, iovcnt, sent_cb); | |
fbe78f4f AL |
770 | } |
771 | ||
f3b6c7fc | 772 | ssize_t |
35277d14 | 773 | qemu_sendv_packet(NetClientState *nc, const struct iovec *iov, int iovcnt) |
f3b6c7fc | 774 | { |
35277d14 | 775 | return qemu_sendv_packet_async(nc, iov, iovcnt, NULL); |
63a01ef8 AL |
776 | } |
777 | ||
4e68f7a0 | 778 | NetClientState *qemu_find_netdev(const char *id) |
5869c4d5 | 779 | { |
35277d14 | 780 | NetClientState *nc; |
5869c4d5 | 781 | |
35277d14 | 782 | QTAILQ_FOREACH(nc, &net_clients, next) { |
f394b2e2 | 783 | if (nc->info->type == NET_CLIENT_DRIVER_NIC) |
85dde9a9 | 784 | continue; |
35277d14 SH |
785 | if (!strcmp(nc->name, id)) { |
786 | return nc; | |
5869c4d5 MM |
787 | } |
788 | } | |
789 | ||
790 | return NULL; | |
791 | } | |
792 | ||
6c51ae73 | 793 | int qemu_find_net_clients_except(const char *id, NetClientState **ncs, |
f394b2e2 | 794 | NetClientDriver type, int max) |
6c51ae73 JW |
795 | { |
796 | NetClientState *nc; | |
797 | int ret = 0; | |
798 | ||
799 | QTAILQ_FOREACH(nc, &net_clients, next) { | |
800 | if (nc->info->type == type) { | |
801 | continue; | |
802 | } | |
40d19394 | 803 | if (!id || !strcmp(nc->name, id)) { |
6c51ae73 JW |
804 | if (ret < max) { |
805 | ncs[ret] = nc; | |
806 | } | |
807 | ret++; | |
808 | } | |
809 | } | |
810 | ||
811 | return ret; | |
812 | } | |
813 | ||
7697079b AL |
814 | static int nic_get_free_idx(void) |
815 | { | |
816 | int index; | |
817 | ||
818 | for (index = 0; index < MAX_NICS; index++) | |
819 | if (!nd_table[index].used) | |
820 | return index; | |
821 | return -1; | |
822 | } | |
823 | ||
07caea31 MA |
824 | int qemu_show_nic_models(const char *arg, const char *const *models) |
825 | { | |
826 | int i; | |
827 | ||
c8057f95 | 828 | if (!arg || !is_help_option(arg)) { |
07caea31 | 829 | return 0; |
c8057f95 | 830 | } |
07caea31 | 831 | |
7b71e03a TH |
832 | printf("Supported NIC models:\n"); |
833 | for (i = 0 ; models[i]; i++) { | |
834 | printf("%s\n", models[i]); | |
835 | } | |
07caea31 MA |
836 | return 1; |
837 | } | |
838 | ||
d07f22c5 AL |
839 | void qemu_check_nic_model(NICInfo *nd, const char *model) |
840 | { | |
841 | const char *models[2]; | |
842 | ||
843 | models[0] = model; | |
844 | models[1] = NULL; | |
845 | ||
07caea31 MA |
846 | if (qemu_show_nic_models(nd->model, models)) |
847 | exit(0); | |
848 | if (qemu_find_nic_model(nd, models, model) < 0) | |
849 | exit(1); | |
d07f22c5 AL |
850 | } |
851 | ||
07caea31 MA |
852 | int qemu_find_nic_model(NICInfo *nd, const char * const *models, |
853 | const char *default_model) | |
d07f22c5 | 854 | { |
07caea31 | 855 | int i; |
d07f22c5 AL |
856 | |
857 | if (!nd->model) | |
7267c094 | 858 | nd->model = g_strdup(default_model); |
d07f22c5 | 859 | |
07caea31 MA |
860 | for (i = 0 ; models[i]; i++) { |
861 | if (strcmp(nd->model, models[i]) == 0) | |
862 | return i; | |
d07f22c5 AL |
863 | } |
864 | ||
6daf194d | 865 | error_report("Unsupported NIC model: %s", nd->model); |
07caea31 | 866 | return -1; |
d07f22c5 AL |
867 | } |
868 | ||
cebea510 | 869 | static int net_init_nic(const Netdev *netdev, const char *name, |
a30ecde6 | 870 | NetClientState *peer, Error **errp) |
f83c6e10 MM |
871 | { |
872 | int idx; | |
873 | NICInfo *nd; | |
2456f36f LE |
874 | const NetLegacyNicOptions *nic; |
875 | ||
f394b2e2 EB |
876 | assert(netdev->type == NET_CLIENT_DRIVER_NIC); |
877 | nic = &netdev->u.nic; | |
f83c6e10 MM |
878 | |
879 | idx = nic_get_free_idx(); | |
880 | if (idx == -1 || nb_nics >= MAX_NICS) { | |
66308868 | 881 | error_setg(errp, "too many NICs"); |
f83c6e10 MM |
882 | return -1; |
883 | } | |
884 | ||
885 | nd = &nd_table[idx]; | |
886 | ||
887 | memset(nd, 0, sizeof(*nd)); | |
888 | ||
2456f36f LE |
889 | if (nic->has_netdev) { |
890 | nd->netdev = qemu_find_netdev(nic->netdev); | |
5869c4d5 | 891 | if (!nd->netdev) { |
66308868 | 892 | error_setg(errp, "netdev '%s' not found", nic->netdev); |
5869c4d5 MM |
893 | return -1; |
894 | } | |
895 | } else { | |
d33d93b2 SH |
896 | assert(peer); |
897 | nd->netdev = peer; | |
5869c4d5 | 898 | } |
c64f50d1 | 899 | nd->name = g_strdup(name); |
2456f36f LE |
900 | if (nic->has_model) { |
901 | nd->model = g_strdup(nic->model); | |
f83c6e10 | 902 | } |
2456f36f LE |
903 | if (nic->has_addr) { |
904 | nd->devaddr = g_strdup(nic->addr); | |
f83c6e10 MM |
905 | } |
906 | ||
2456f36f LE |
907 | if (nic->has_macaddr && |
908 | net_parse_macaddr(nd->macaddr.a, nic->macaddr) < 0) { | |
66308868 | 909 | error_setg(errp, "invalid syntax for ethernet address"); |
f83c6e10 MM |
910 | return -1; |
911 | } | |
d60b20cf DK |
912 | if (nic->has_macaddr && |
913 | is_multicast_ether_addr(nd->macaddr.a)) { | |
66308868 MA |
914 | error_setg(errp, |
915 | "NIC cannot have multicast MAC address (odd 1st byte)"); | |
d60b20cf DK |
916 | return -1; |
917 | } | |
6eed1856 | 918 | qemu_macaddr_default_if_unset(&nd->macaddr); |
f83c6e10 | 919 | |
2456f36f LE |
920 | if (nic->has_vectors) { |
921 | if (nic->vectors > 0x7ffffff) { | |
66308868 | 922 | error_setg(errp, "invalid # of vectors: %"PRIu32, nic->vectors); |
2456f36f LE |
923 | return -1; |
924 | } | |
925 | nd->nvectors = nic->vectors; | |
926 | } else { | |
927 | nd->nvectors = DEV_NVECTORS_UNSPECIFIED; | |
f83c6e10 MM |
928 | } |
929 | ||
930 | nd->used = 1; | |
f83c6e10 MM |
931 | nb_nics++; |
932 | ||
933 | return idx; | |
934 | } | |
935 | ||
6687b79d | 936 | |
f394b2e2 | 937 | static int (* const net_client_init_fun[NET_CLIENT_DRIVER__MAX])( |
cebea510 | 938 | const Netdev *netdev, |
6687b79d | 939 | const char *name, |
a30ecde6 | 940 | NetClientState *peer, Error **errp) = { |
f394b2e2 | 941 | [NET_CLIENT_DRIVER_NIC] = net_init_nic, |
ec302ffd | 942 | #ifdef CONFIG_SLIRP |
f394b2e2 | 943 | [NET_CLIENT_DRIVER_USER] = net_init_slirp, |
2944e4ec | 944 | #endif |
f394b2e2 EB |
945 | [NET_CLIENT_DRIVER_TAP] = net_init_tap, |
946 | [NET_CLIENT_DRIVER_SOCKET] = net_init_socket, | |
dd51058d | 947 | #ifdef CONFIG_VDE |
f394b2e2 | 948 | [NET_CLIENT_DRIVER_VDE] = net_init_vde, |
58952137 VM |
949 | #endif |
950 | #ifdef CONFIG_NETMAP | |
f394b2e2 | 951 | [NET_CLIENT_DRIVER_NETMAP] = net_init_netmap, |
dd51058d | 952 | #endif |
2944e4ec | 953 | #ifdef CONFIG_NET_BRIDGE |
f394b2e2 | 954 | [NET_CLIENT_DRIVER_BRIDGE] = net_init_bridge, |
6687b79d | 955 | #endif |
f394b2e2 | 956 | [NET_CLIENT_DRIVER_HUBPORT] = net_init_hubport, |
56f41de7 | 957 | #ifdef CONFIG_VHOST_NET_USER |
f394b2e2 | 958 | [NET_CLIENT_DRIVER_VHOST_USER] = net_init_vhost_user, |
03ce5744 | 959 | #endif |
015a33bd | 960 | #ifdef CONFIG_L2TPV3 |
f394b2e2 | 961 | [NET_CLIENT_DRIVER_L2TPV3] = net_init_l2tpv3, |
3fb69aa1 | 962 | #endif |
f83c6e10 MM |
963 | }; |
964 | ||
6687b79d | 965 | |
0e55c381 | 966 | static int net_client_init1(const void *object, bool is_netdev, Error **errp) |
f83c6e10 | 967 | { |
cebea510 KZ |
968 | Netdev legacy = {0}; |
969 | const Netdev *netdev; | |
6d952ebe | 970 | const char *name; |
4ef0defb | 971 | NetClientState *peer = NULL; |
f83c6e10 | 972 | |
5294e2c7 | 973 | if (is_netdev) { |
cebea510 | 974 | netdev = object; |
1e81aba5 | 975 | name = netdev->id; |
6687b79d | 976 | |
857d2087 | 977 | if (netdev->type == NET_CLIENT_DRIVER_NIC || |
f394b2e2 | 978 | !net_client_init_fun[netdev->type]) { |
c6bd8c70 MA |
979 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "type", |
980 | "a netdev backend type"); | |
f6b134ac MM |
981 | return -1; |
982 | } | |
6687b79d | 983 | } else { |
1e81aba5 | 984 | const NetLegacy *net = object; |
f394b2e2 | 985 | const NetLegacyOptions *opts = net->opts; |
cebea510 | 986 | legacy.id = net->id; |
cebea510 | 987 | netdev = &legacy; |
6687b79d | 988 | /* missing optional values have been initialized to "all bits zero" */ |
1e81aba5 | 989 | name = net->has_id ? net->id : net->name; |
d139e9a6 | 990 | |
101625a4 TH |
991 | if (net->has_name) { |
992 | warn_report("The 'name' parameter is deprecated, use 'id' instead"); | |
993 | } | |
994 | ||
f394b2e2 EB |
995 | /* Map the old options to the new flat type */ |
996 | switch (opts->type) { | |
d3be4b57 | 997 | case NET_LEGACY_OPTIONS_TYPE_NONE: |
d139e9a6 | 998 | return 0; /* nothing to do */ |
d3be4b57 | 999 | case NET_LEGACY_OPTIONS_TYPE_NIC: |
f394b2e2 | 1000 | legacy.type = NET_CLIENT_DRIVER_NIC; |
d3be4b57 | 1001 | legacy.u.nic = opts->u.nic; |
f394b2e2 | 1002 | break; |
d3be4b57 | 1003 | case NET_LEGACY_OPTIONS_TYPE_USER: |
f394b2e2 | 1004 | legacy.type = NET_CLIENT_DRIVER_USER; |
d3be4b57 | 1005 | legacy.u.user = opts->u.user; |
f394b2e2 | 1006 | break; |
d3be4b57 | 1007 | case NET_LEGACY_OPTIONS_TYPE_TAP: |
f394b2e2 | 1008 | legacy.type = NET_CLIENT_DRIVER_TAP; |
d3be4b57 | 1009 | legacy.u.tap = opts->u.tap; |
f394b2e2 | 1010 | break; |
d3be4b57 | 1011 | case NET_LEGACY_OPTIONS_TYPE_L2TPV3: |
f394b2e2 | 1012 | legacy.type = NET_CLIENT_DRIVER_L2TPV3; |
d3be4b57 | 1013 | legacy.u.l2tpv3 = opts->u.l2tpv3; |
f394b2e2 | 1014 | break; |
d3be4b57 | 1015 | case NET_LEGACY_OPTIONS_TYPE_SOCKET: |
f394b2e2 | 1016 | legacy.type = NET_CLIENT_DRIVER_SOCKET; |
d3be4b57 | 1017 | legacy.u.socket = opts->u.socket; |
f394b2e2 | 1018 | break; |
d3be4b57 | 1019 | case NET_LEGACY_OPTIONS_TYPE_VDE: |
f394b2e2 | 1020 | legacy.type = NET_CLIENT_DRIVER_VDE; |
d3be4b57 | 1021 | legacy.u.vde = opts->u.vde; |
f394b2e2 | 1022 | break; |
d3be4b57 | 1023 | case NET_LEGACY_OPTIONS_TYPE_BRIDGE: |
f394b2e2 | 1024 | legacy.type = NET_CLIENT_DRIVER_BRIDGE; |
d3be4b57 | 1025 | legacy.u.bridge = opts->u.bridge; |
f394b2e2 | 1026 | break; |
d3be4b57 | 1027 | case NET_LEGACY_OPTIONS_TYPE_NETMAP: |
f394b2e2 | 1028 | legacy.type = NET_CLIENT_DRIVER_NETMAP; |
d3be4b57 | 1029 | legacy.u.netmap = opts->u.netmap; |
f394b2e2 | 1030 | break; |
d3be4b57 | 1031 | case NET_LEGACY_OPTIONS_TYPE_VHOST_USER: |
f394b2e2 | 1032 | legacy.type = NET_CLIENT_DRIVER_VHOST_USER; |
d3be4b57 | 1033 | legacy.u.vhost_user = opts->u.vhost_user; |
f394b2e2 EB |
1034 | break; |
1035 | default: | |
1036 | abort(); | |
1e81aba5 | 1037 | } |
d139e9a6 | 1038 | |
f394b2e2 | 1039 | if (!net_client_init_fun[netdev->type]) { |
d139e9a6 SH |
1040 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "type", |
1041 | "a net backend type (maybe it is not compiled " | |
1042 | "into this binary)"); | |
1043 | return -1; | |
1044 | } | |
f6b134ac | 1045 | |
af1a5c3e | 1046 | /* Do not add to a hub if it's a nic with a netdev= parameter. */ |
f394b2e2 | 1047 | if (netdev->type != NET_CLIENT_DRIVER_NIC || |
d3be4b57 | 1048 | !opts->u.nic.has_netdev) { |
af1a5c3e | 1049 | peer = net_hub_add_port(0, NULL, NULL); |
a2dbe135 | 1050 | } |
4ef0defb | 1051 | } |
6687b79d | 1052 | |
f394b2e2 | 1053 | if (net_client_init_fun[netdev->type](netdev, name, peer, errp) < 0) { |
4ef0defb SH |
1054 | /* FIXME drop when all init functions store an Error */ |
1055 | if (errp && !*errp) { | |
1056 | error_setg(errp, QERR_DEVICE_INIT_FAILED, | |
977c736f | 1057 | NetClientDriver_str(netdev->type)); |
f6b134ac | 1058 | } |
4ef0defb | 1059 | return -1; |
f6b134ac | 1060 | } |
6687b79d LE |
1061 | return 0; |
1062 | } | |
1063 | ||
547203ea TH |
1064 | static void show_netdevs(void) |
1065 | { | |
1066 | int idx; | |
1067 | const char *available_netdevs[] = { | |
1068 | "socket", | |
1069 | "hubport", | |
1070 | "tap", | |
1071 | #ifdef CONFIG_SLIRP | |
1072 | "user", | |
1073 | #endif | |
1074 | #ifdef CONFIG_L2TPV3 | |
1075 | "l2tpv3", | |
1076 | #endif | |
1077 | #ifdef CONFIG_VDE | |
1078 | "vde", | |
1079 | #endif | |
1080 | #ifdef CONFIG_NET_BRIDGE | |
1081 | "bridge", | |
1082 | #endif | |
1083 | #ifdef CONFIG_NETMAP | |
1084 | "netmap", | |
1085 | #endif | |
1086 | #ifdef CONFIG_POSIX | |
1087 | "vhost-user", | |
1088 | #endif | |
1089 | }; | |
1090 | ||
1091 | printf("Available netdev backend types:\n"); | |
1092 | for (idx = 0; idx < ARRAY_SIZE(available_netdevs); idx++) { | |
1093 | puts(available_netdevs[idx]); | |
1094 | } | |
1095 | } | |
f6b134ac | 1096 | |
aa09a485 | 1097 | static int net_client_init(QemuOpts *opts, bool is_netdev, Error **errp) |
6687b79d | 1098 | { |
c1112b2d | 1099 | gchar **substrings = NULL; |
6687b79d LE |
1100 | void *object = NULL; |
1101 | Error *err = NULL; | |
1102 | int ret = -1; | |
09204eac | 1103 | Visitor *v = opts_visitor_new(opts); |
f83c6e10 | 1104 | |
8b43f964 LM |
1105 | const char *type = qemu_opt_get(opts, "type"); |
1106 | ||
1107 | if (is_netdev && type && is_help_option(type)) { | |
547203ea TH |
1108 | show_netdevs(); |
1109 | exit(0); | |
1110 | } else { | |
7aac531e | 1111 | /* Parse convenience option format ip6-net=fec0::0[/64] */ |
891a2bb5 | 1112 | const char *ip6_net = qemu_opt_get(opts, "ipv6-net"); |
7aac531e YB |
1113 | |
1114 | if (ip6_net) { | |
c1112b2d SG |
1115 | char *prefix_addr; |
1116 | unsigned long prefix_len = 64; /* Default 64bit prefix length. */ | |
1117 | ||
1118 | substrings = g_strsplit(ip6_net, "/", 2); | |
1119 | if (!substrings || !substrings[0]) { | |
1120 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "ipv6-net", | |
1121 | "a valid IPv6 prefix"); | |
1122 | goto out; | |
1123 | } | |
1124 | ||
1125 | prefix_addr = substrings[0]; | |
7aac531e | 1126 | |
c1112b2d | 1127 | if (substrings[1]) { |
7aac531e | 1128 | /* User-specified prefix length. */ |
7aac531e YB |
1129 | int err; |
1130 | ||
c1112b2d | 1131 | err = qemu_strtoul(substrings[1], NULL, 10, &prefix_len); |
7aac531e YB |
1132 | if (err) { |
1133 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, | |
21c520d0 SG |
1134 | "ipv6-prefixlen", "a number"); |
1135 | goto out; | |
7aac531e YB |
1136 | } |
1137 | } | |
c1112b2d SG |
1138 | |
1139 | qemu_opt_set(opts, "ipv6-prefix", prefix_addr, &error_abort); | |
1140 | qemu_opt_set_number(opts, "ipv6-prefixlen", prefix_len, | |
1141 | &error_abort); | |
891a2bb5 | 1142 | qemu_opt_unset(opts, "ipv6-net"); |
7aac531e YB |
1143 | } |
1144 | } | |
1145 | ||
96a1616c EB |
1146 | if (is_netdev) { |
1147 | visit_type_Netdev(v, NULL, (Netdev **)&object, &err); | |
1148 | } else { | |
1149 | visit_type_NetLegacy(v, NULL, (NetLegacy **)&object, &err); | |
f83c6e10 MM |
1150 | } |
1151 | ||
6687b79d | 1152 | if (!err) { |
1a0c0958 | 1153 | ret = net_client_init1(object, is_netdev, &err); |
6687b79d LE |
1154 | } |
1155 | ||
96a1616c EB |
1156 | if (is_netdev) { |
1157 | qapi_free_Netdev(object); | |
1158 | } else { | |
1159 | qapi_free_NetLegacy(object); | |
6687b79d LE |
1160 | } |
1161 | ||
21c520d0 | 1162 | out: |
6687b79d | 1163 | error_propagate(errp, err); |
c1112b2d | 1164 | g_strfreev(substrings); |
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 | } |