]>
Commit | Line | Data |
---|---|---|
63a01ef8 AL |
1 | /* |
2 | * QEMU System Emulator | |
3 | * | |
4 | * Copyright (c) 2003-2008 Fabrice Bellard | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
e688df6b | 24 | |
2744d920 | 25 | #include "qemu/osdep.h" |
26d0586f | 26 | #include "qemu-common.h" |
d40cdb10 | 27 | |
1422e32d | 28 | #include "net/net.h" |
fd9400b3 PB |
29 | #include "clients.h" |
30 | #include "hub.h" | |
a27bd6c7 | 31 | #include "hw/qdev-properties.h" |
1422e32d | 32 | #include "net/slirp.h" |
d60b20cf | 33 | #include "net/eth.h" |
fd9400b3 | 34 | #include "util.h" |
a245fc18 | 35 | |
83c9089e | 36 | #include "monitor/monitor.h" |
f348b6d1 | 37 | #include "qemu/help_option.h" |
9af23989 | 38 | #include "qapi/qapi-commands-net.h" |
452fcdbc | 39 | #include "qapi/qmp/qdict.h" |
cc7a8ea7 | 40 | #include "qapi/qmp/qerror.h" |
d49b6836 | 41 | #include "qemu/error-report.h" |
1de7afc9 | 42 | #include "qemu/sockets.h" |
f348b6d1 | 43 | #include "qemu/cutils.h" |
1de7afc9 | 44 | #include "qemu/config-file.h" |
856dfd8a | 45 | #include "qemu/ctype.h" |
27eb3722 | 46 | #include "qemu/id.h" |
1de7afc9 | 47 | #include "qemu/iov.h" |
ad6f932f | 48 | #include "qemu/qemu-print.h" |
6a1751b7 | 49 | #include "qemu/main-loop.h" |
922a01a0 | 50 | #include "qemu/option.h" |
e688df6b | 51 | #include "qapi/error.h" |
6687b79d | 52 | #include "qapi/opts-visitor.h" |
e1d64c08 | 53 | #include "sysemu/sysemu.h" |
54d31236 MA |
54 | #include "sysemu/runstate.h" |
55 | #include "sysemu/sysemu.h" | |
fdccce45 | 56 | #include "net/filter.h" |
aa9156f4 | 57 | #include "qapi/string-output-visitor.h" |
a0724776 | 58 | #include "qapi/hmp-output-visitor.h" |
511d2b14 | 59 | |
2944e4ec SW |
60 | /* Net bridge is currently not supported for W32. */ |
61 | #if !defined(_WIN32) | |
62 | # define CONFIG_NET_BRIDGE | |
63 | #endif | |
64 | ||
ca77d85e | 65 | static VMChangeStateEntry *net_change_state_entry; |
4e68f7a0 | 66 | static QTAILQ_HEAD(, NetClientState) net_clients; |
63a01ef8 AL |
67 | |
68 | /***********************************************************/ | |
69 | /* network device redirectors */ | |
70 | ||
bcd4dfd6 MZ |
71 | int parse_host_port(struct sockaddr_in *saddr, const char *str, |
72 | Error **errp) | |
63a01ef8 | 73 | { |
add99347 | 74 | gchar **substrings; |
63a01ef8 | 75 | struct hostent *he; |
add99347 SG |
76 | const char *addr, *p, *r; |
77 | int port, ret = 0; | |
63a01ef8 | 78 | |
add99347 SG |
79 | substrings = g_strsplit(str, ":", 2); |
80 | if (!substrings || !substrings[0] || !substrings[1]) { | |
bcd4dfd6 MZ |
81 | error_setg(errp, "host address '%s' doesn't contain ':' " |
82 | "separating host from port", str); | |
add99347 SG |
83 | ret = -1; |
84 | goto out; | |
bcd4dfd6 | 85 | } |
add99347 SG |
86 | |
87 | addr = substrings[0]; | |
88 | p = substrings[1]; | |
89 | ||
63a01ef8 | 90 | saddr->sin_family = AF_INET; |
add99347 | 91 | if (addr[0] == '\0') { |
63a01ef8 AL |
92 | saddr->sin_addr.s_addr = 0; |
93 | } else { | |
add99347 SG |
94 | if (qemu_isdigit(addr[0])) { |
95 | if (!inet_aton(addr, &saddr->sin_addr)) { | |
bcd4dfd6 | 96 | error_setg(errp, "host address '%s' is not a valid " |
add99347 SG |
97 | "IPv4 address", addr); |
98 | ret = -1; | |
99 | goto out; | |
bcd4dfd6 | 100 | } |
63a01ef8 | 101 | } else { |
add99347 | 102 | he = gethostbyname(addr); |
bcd4dfd6 | 103 | if (he == NULL) { |
add99347 SG |
104 | error_setg(errp, "can't resolve host address '%s'", addr); |
105 | ret = -1; | |
106 | goto out; | |
bcd4dfd6 | 107 | } |
63a01ef8 AL |
108 | saddr->sin_addr = *(struct in_addr *)he->h_addr; |
109 | } | |
110 | } | |
111 | port = strtol(p, (char **)&r, 0); | |
bcd4dfd6 MZ |
112 | if (r == p) { |
113 | error_setg(errp, "port number '%s' is invalid", p); | |
add99347 SG |
114 | ret = -1; |
115 | goto out; | |
bcd4dfd6 | 116 | } |
63a01ef8 | 117 | saddr->sin_port = htons(port); |
add99347 SG |
118 | |
119 | out: | |
120 | g_strfreev(substrings); | |
121 | return ret; | |
63a01ef8 AL |
122 | } |
123 | ||
890ee6ab SF |
124 | char *qemu_mac_strdup_printf(const uint8_t *macaddr) |
125 | { | |
126 | return g_strdup_printf("%.2x:%.2x:%.2x:%.2x:%.2x:%.2x", | |
127 | macaddr[0], macaddr[1], macaddr[2], | |
128 | macaddr[3], macaddr[4], macaddr[5]); | |
129 | } | |
130 | ||
35277d14 | 131 | void qemu_format_nic_info_str(NetClientState *nc, uint8_t macaddr[6]) |
7cb7434b | 132 | { |
59b5437e AK |
133 | g_free(nc->info_str); |
134 | nc->info_str = g_strdup_printf( | |
135 | "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x", | |
136 | nc->model, | |
137 | macaddr[0], macaddr[1], macaddr[2], | |
138 | macaddr[3], macaddr[4], macaddr[5]); | |
7cb7434b AL |
139 | } |
140 | ||
2bc22a58 SZ |
141 | static int mac_table[256] = {0}; |
142 | ||
143 | static void qemu_macaddr_set_used(MACAddr *macaddr) | |
144 | { | |
145 | int index; | |
146 | ||
147 | for (index = 0x56; index < 0xFF; index++) { | |
148 | if (macaddr->a[5] == index) { | |
149 | mac_table[index]++; | |
150 | } | |
151 | } | |
152 | } | |
153 | ||
154 | static void qemu_macaddr_set_free(MACAddr *macaddr) | |
155 | { | |
156 | int index; | |
157 | static const MACAddr base = { .a = { 0x52, 0x54, 0x00, 0x12, 0x34, 0 } }; | |
158 | ||
159 | if (memcmp(macaddr->a, &base.a, (sizeof(base.a) - 1)) != 0) { | |
160 | return; | |
161 | } | |
162 | for (index = 0x56; index < 0xFF; index++) { | |
163 | if (macaddr->a[5] == index) { | |
164 | mac_table[index]--; | |
165 | } | |
166 | } | |
167 | } | |
168 | ||
169 | static int qemu_macaddr_get_free(void) | |
170 | { | |
171 | int index; | |
172 | ||
173 | for (index = 0x56; index < 0xFF; index++) { | |
174 | if (mac_table[index] == 0) { | |
175 | return index; | |
176 | } | |
177 | } | |
178 | ||
179 | return -1; | |
180 | } | |
181 | ||
76d32cba GH |
182 | void qemu_macaddr_default_if_unset(MACAddr *macaddr) |
183 | { | |
76d32cba | 184 | static const MACAddr zero = { .a = { 0,0,0,0,0,0 } }; |
2bc22a58 SZ |
185 | static const MACAddr base = { .a = { 0x52, 0x54, 0x00, 0x12, 0x34, 0 } }; |
186 | ||
187 | if (memcmp(macaddr, &zero, sizeof(zero)) != 0) { | |
188 | if (memcmp(macaddr->a, &base.a, (sizeof(base.a) - 1)) != 0) { | |
189 | return; | |
190 | } else { | |
191 | qemu_macaddr_set_used(macaddr); | |
192 | return; | |
193 | } | |
194 | } | |
76d32cba | 195 | |
76d32cba GH |
196 | macaddr->a[0] = 0x52; |
197 | macaddr->a[1] = 0x54; | |
198 | macaddr->a[2] = 0x00; | |
199 | macaddr->a[3] = 0x12; | |
200 | macaddr->a[4] = 0x34; | |
2bc22a58 SZ |
201 | macaddr->a[5] = qemu_macaddr_get_free(); |
202 | qemu_macaddr_set_used(macaddr); | |
76d32cba GH |
203 | } |
204 | ||
d33d93b2 SH |
205 | /** |
206 | * Generate a name for net client | |
207 | * | |
c963530a | 208 | * Only net clients created with the legacy -net option and NICs need this. |
d33d93b2 | 209 | */ |
35277d14 | 210 | static char *assign_name(NetClientState *nc1, const char *model) |
676cff29 | 211 | { |
35277d14 | 212 | NetClientState *nc; |
676cff29 AL |
213 | int id = 0; |
214 | ||
35277d14 SH |
215 | QTAILQ_FOREACH(nc, &net_clients, next) { |
216 | if (nc == nc1) { | |
d33d93b2 | 217 | continue; |
5610c3aa | 218 | } |
c963530a | 219 | if (strcmp(nc->model, model) == 0) { |
53e51d85 MA |
220 | id++; |
221 | } | |
222 | } | |
223 | ||
4bf2c138 | 224 | return g_strdup_printf("%s.%d", model, id); |
676cff29 AL |
225 | } |
226 | ||
f7860455 JW |
227 | static void qemu_net_client_destructor(NetClientState *nc) |
228 | { | |
229 | g_free(nc); | |
230 | } | |
25c01bd1 JW |
231 | static ssize_t qemu_deliver_packet_iov(NetClientState *sender, |
232 | unsigned flags, | |
233 | const struct iovec *iov, | |
234 | int iovcnt, | |
235 | void *opaque); | |
f7860455 | 236 | |
18a1541a JW |
237 | static void qemu_net_client_setup(NetClientState *nc, |
238 | NetClientInfo *info, | |
239 | NetClientState *peer, | |
240 | const char *model, | |
f7860455 JW |
241 | const char *name, |
242 | NetClientDestructor *destructor) | |
63a01ef8 | 243 | { |
35277d14 SH |
244 | nc->info = info; |
245 | nc->model = g_strdup(model); | |
45460d1a | 246 | if (name) { |
35277d14 | 247 | nc->name = g_strdup(name); |
45460d1a | 248 | } else { |
35277d14 | 249 | nc->name = assign_name(nc, model); |
45460d1a | 250 | } |
5610c3aa | 251 | |
ab5f3f84 SH |
252 | if (peer) { |
253 | assert(!peer->peer); | |
35277d14 SH |
254 | nc->peer = peer; |
255 | peer->peer = nc; | |
d80b9fc6 | 256 | } |
35277d14 | 257 | QTAILQ_INSERT_TAIL(&net_clients, nc, next); |
63a01ef8 | 258 | |
3e033a46 | 259 | nc->incoming_queue = qemu_new_net_queue(qemu_deliver_packet_iov, nc); |
f7860455 | 260 | nc->destructor = destructor; |
fdccce45 | 261 | QTAILQ_INIT(&nc->filters); |
18a1541a JW |
262 | } |
263 | ||
264 | NetClientState *qemu_new_net_client(NetClientInfo *info, | |
265 | NetClientState *peer, | |
266 | const char *model, | |
267 | const char *name) | |
268 | { | |
269 | NetClientState *nc; | |
270 | ||
271 | assert(info->size >= sizeof(NetClientState)); | |
272 | ||
273 | nc = g_malloc0(info->size); | |
f7860455 JW |
274 | qemu_net_client_setup(nc, info, peer, model, name, |
275 | qemu_net_client_destructor); | |
18a1541a | 276 | |
35277d14 | 277 | return nc; |
63a01ef8 AL |
278 | } |
279 | ||
ebef2c09 MM |
280 | NICState *qemu_new_nic(NetClientInfo *info, |
281 | NICConf *conf, | |
282 | const char *model, | |
283 | const char *name, | |
284 | void *opaque) | |
285 | { | |
1ceef9f2 | 286 | NetClientState **peers = conf->peers.ncs; |
ebef2c09 | 287 | NICState *nic; |
575a1c0e | 288 | int i, queues = MAX(1, conf->peers.queues); |
ebef2c09 | 289 | |
f394b2e2 | 290 | assert(info->type == NET_CLIENT_DRIVER_NIC); |
ebef2c09 MM |
291 | assert(info->size >= sizeof(NICState)); |
292 | ||
f6b26cf2 JW |
293 | nic = g_malloc0(info->size + sizeof(NetClientState) * queues); |
294 | nic->ncs = (void *)nic + info->size; | |
ebef2c09 MM |
295 | nic->conf = conf; |
296 | nic->opaque = opaque; | |
297 | ||
f6b26cf2 JW |
298 | for (i = 0; i < queues; i++) { |
299 | qemu_net_client_setup(&nic->ncs[i], info, peers[i], model, name, | |
1ceef9f2 JW |
300 | NULL); |
301 | nic->ncs[i].queue_index = i; | |
302 | } | |
303 | ||
ebef2c09 MM |
304 | return nic; |
305 | } | |
306 | ||
1ceef9f2 JW |
307 | NetClientState *qemu_get_subqueue(NICState *nic, int queue_index) |
308 | { | |
f6b26cf2 | 309 | return nic->ncs + queue_index; |
1ceef9f2 JW |
310 | } |
311 | ||
b356f76d JW |
312 | NetClientState *qemu_get_queue(NICState *nic) |
313 | { | |
1ceef9f2 | 314 | return qemu_get_subqueue(nic, 0); |
b356f76d JW |
315 | } |
316 | ||
cc1f0f45 JW |
317 | NICState *qemu_get_nic(NetClientState *nc) |
318 | { | |
1ceef9f2 JW |
319 | NetClientState *nc0 = nc - nc->queue_index; |
320 | ||
f6b26cf2 | 321 | return (NICState *)((void *)nc0 - nc->info->size); |
cc1f0f45 JW |
322 | } |
323 | ||
324 | void *qemu_get_nic_opaque(NetClientState *nc) | |
325 | { | |
326 | NICState *nic = qemu_get_nic(nc); | |
327 | ||
328 | return nic->opaque; | |
329 | } | |
330 | ||
0165daae CL |
331 | NetClientState *qemu_get_peer(NetClientState *nc, int queue_index) |
332 | { | |
333 | assert(nc != NULL); | |
334 | NetClientState *ncs = nc + queue_index; | |
335 | return ncs->peer; | |
336 | } | |
337 | ||
b20c6b9e | 338 | static void qemu_cleanup_net_client(NetClientState *nc) |
63a01ef8 | 339 | { |
35277d14 | 340 | QTAILQ_REMOVE(&net_clients, nc, next); |
63a01ef8 | 341 | |
cc2a9043 AF |
342 | if (nc->info->cleanup) { |
343 | nc->info->cleanup(nc); | |
344 | } | |
a083a89d | 345 | } |
5610c3aa | 346 | |
b20c6b9e | 347 | static void qemu_free_net_client(NetClientState *nc) |
a083a89d | 348 | { |
067404be JK |
349 | if (nc->incoming_queue) { |
350 | qemu_del_net_queue(nc->incoming_queue); | |
a005d073 | 351 | } |
35277d14 SH |
352 | if (nc->peer) { |
353 | nc->peer->peer = NULL; | |
a083a89d | 354 | } |
35277d14 SH |
355 | g_free(nc->name); |
356 | g_free(nc->model); | |
59b5437e | 357 | g_free(nc->info_str); |
d32ad10a | 358 | qapi_free_NetdevInfo(nc->stored_config); |
f7860455 JW |
359 | if (nc->destructor) { |
360 | nc->destructor(nc); | |
361 | } | |
63a01ef8 AL |
362 | } |
363 | ||
b20c6b9e | 364 | void qemu_del_net_client(NetClientState *nc) |
a083a89d | 365 | { |
1ceef9f2 JW |
366 | NetClientState *ncs[MAX_QUEUE_NUM]; |
367 | int queues, i; | |
fdccce45 | 368 | NetFilterState *nf, *next; |
1ceef9f2 | 369 | |
f394b2e2 | 370 | assert(nc->info->type != NET_CLIENT_DRIVER_NIC); |
7fb43911 | 371 | |
1ceef9f2 JW |
372 | /* If the NetClientState belongs to a multiqueue backend, we will change all |
373 | * other NetClientStates also. | |
374 | */ | |
375 | queues = qemu_find_net_clients_except(nc->name, ncs, | |
f394b2e2 | 376 | NET_CLIENT_DRIVER_NIC, |
1ceef9f2 JW |
377 | MAX_QUEUE_NUM); |
378 | assert(queues != 0); | |
379 | ||
fdccce45 YH |
380 | QTAILQ_FOREACH_SAFE(nf, &nc->filters, next, next) { |
381 | object_unparent(OBJECT(nf)); | |
382 | } | |
383 | ||
a083a89d | 384 | /* If there is a peer NIC, delete and cleanup client, but do not free. */ |
f394b2e2 | 385 | if (nc->peer && nc->peer->info->type == NET_CLIENT_DRIVER_NIC) { |
cc1f0f45 | 386 | NICState *nic = qemu_get_nic(nc->peer); |
a083a89d MT |
387 | if (nic->peer_deleted) { |
388 | return; | |
389 | } | |
390 | nic->peer_deleted = true; | |
1ceef9f2 JW |
391 | |
392 | for (i = 0; i < queues; i++) { | |
393 | ncs[i]->peer->link_down = true; | |
394 | } | |
395 | ||
35277d14 SH |
396 | if (nc->peer->info->link_status_changed) { |
397 | nc->peer->info->link_status_changed(nc->peer); | |
a083a89d | 398 | } |
1ceef9f2 JW |
399 | |
400 | for (i = 0; i < queues; i++) { | |
401 | qemu_cleanup_net_client(ncs[i]); | |
402 | } | |
403 | ||
a083a89d MT |
404 | return; |
405 | } | |
406 | ||
1ceef9f2 JW |
407 | for (i = 0; i < queues; i++) { |
408 | qemu_cleanup_net_client(ncs[i]); | |
409 | qemu_free_net_client(ncs[i]); | |
410 | } | |
948ecf21 JW |
411 | } |
412 | ||
413 | void qemu_del_nic(NICState *nic) | |
414 | { | |
575a1c0e | 415 | int i, queues = MAX(nic->conf->peers.queues, 1); |
1ceef9f2 | 416 | |
2bc22a58 SZ |
417 | qemu_macaddr_set_free(&nic->conf->macaddr); |
418 | ||
d2abc563 YB |
419 | for (i = 0; i < queues; i++) { |
420 | NetClientState *nc = qemu_get_subqueue(nic, i); | |
421 | /* If this is a peer NIC and peer has already been deleted, free it now. */ | |
422 | if (nic->peer_deleted) { | |
423 | qemu_free_net_client(nc->peer); | |
424 | } else if (nc->peer) { | |
425 | /* if there are RX packets pending, complete them */ | |
426 | qemu_purge_queued_packets(nc->peer); | |
1a609520 JK |
427 | } |
428 | } | |
1a609520 | 429 | |
1ceef9f2 JW |
430 | for (i = queues - 1; i >= 0; i--) { |
431 | NetClientState *nc = qemu_get_subqueue(nic, i); | |
432 | ||
433 | qemu_cleanup_net_client(nc); | |
434 | qemu_free_net_client(nc); | |
435 | } | |
f6b26cf2 JW |
436 | |
437 | g_free(nic); | |
1a609520 JK |
438 | } |
439 | ||
57f9ef17 MM |
440 | void qemu_foreach_nic(qemu_nic_foreach func, void *opaque) |
441 | { | |
4e68f7a0 | 442 | NetClientState *nc; |
57f9ef17 | 443 | |
94878994 | 444 | QTAILQ_FOREACH(nc, &net_clients, next) { |
f394b2e2 | 445 | if (nc->info->type == NET_CLIENT_DRIVER_NIC) { |
1ceef9f2 JW |
446 | if (nc->queue_index == 0) { |
447 | func(qemu_get_nic(nc), opaque); | |
448 | } | |
57f9ef17 MM |
449 | } |
450 | } | |
57f9ef17 MM |
451 | } |
452 | ||
d6085e3a | 453 | bool qemu_has_ufo(NetClientState *nc) |
1f55ac45 | 454 | { |
d6085e3a | 455 | if (!nc || !nc->info->has_ufo) { |
1f55ac45 VM |
456 | return false; |
457 | } | |
458 | ||
d6085e3a | 459 | return nc->info->has_ufo(nc); |
1f55ac45 VM |
460 | } |
461 | ||
d6085e3a | 462 | bool qemu_has_vnet_hdr(NetClientState *nc) |
1f55ac45 | 463 | { |
d6085e3a | 464 | if (!nc || !nc->info->has_vnet_hdr) { |
1f55ac45 VM |
465 | return false; |
466 | } | |
467 | ||
d6085e3a | 468 | return nc->info->has_vnet_hdr(nc); |
1f55ac45 VM |
469 | } |
470 | ||
d6085e3a | 471 | bool qemu_has_vnet_hdr_len(NetClientState *nc, int len) |
1f55ac45 | 472 | { |
d6085e3a | 473 | if (!nc || !nc->info->has_vnet_hdr_len) { |
1f55ac45 VM |
474 | return false; |
475 | } | |
476 | ||
d6085e3a | 477 | return nc->info->has_vnet_hdr_len(nc, len); |
1f55ac45 VM |
478 | } |
479 | ||
d6085e3a | 480 | void qemu_using_vnet_hdr(NetClientState *nc, bool enable) |
1f55ac45 | 481 | { |
d6085e3a | 482 | if (!nc || !nc->info->using_vnet_hdr) { |
1f55ac45 VM |
483 | return; |
484 | } | |
485 | ||
d6085e3a | 486 | nc->info->using_vnet_hdr(nc, enable); |
1f55ac45 VM |
487 | } |
488 | ||
d6085e3a | 489 | void qemu_set_offload(NetClientState *nc, int csum, int tso4, int tso6, |
1f55ac45 VM |
490 | int ecn, int ufo) |
491 | { | |
d6085e3a | 492 | if (!nc || !nc->info->set_offload) { |
1f55ac45 VM |
493 | return; |
494 | } | |
495 | ||
d6085e3a | 496 | nc->info->set_offload(nc, csum, tso4, tso6, ecn, ufo); |
1f55ac45 VM |
497 | } |
498 | ||
d6085e3a | 499 | void qemu_set_vnet_hdr_len(NetClientState *nc, int len) |
1f55ac45 | 500 | { |
d6085e3a | 501 | if (!nc || !nc->info->set_vnet_hdr_len) { |
1f55ac45 VM |
502 | return; |
503 | } | |
504 | ||
d6b732e9 | 505 | nc->vnet_hdr_len = len; |
d6085e3a | 506 | nc->info->set_vnet_hdr_len(nc, len); |
1f55ac45 VM |
507 | } |
508 | ||
c80cd6bb GK |
509 | int qemu_set_vnet_le(NetClientState *nc, bool is_le) |
510 | { | |
052bd52f | 511 | #ifdef HOST_WORDS_BIGENDIAN |
c80cd6bb GK |
512 | if (!nc || !nc->info->set_vnet_le) { |
513 | return -ENOSYS; | |
514 | } | |
515 | ||
516 | return nc->info->set_vnet_le(nc, is_le); | |
052bd52f MT |
517 | #else |
518 | return 0; | |
519 | #endif | |
c80cd6bb GK |
520 | } |
521 | ||
522 | int qemu_set_vnet_be(NetClientState *nc, bool is_be) | |
523 | { | |
052bd52f MT |
524 | #ifdef HOST_WORDS_BIGENDIAN |
525 | return 0; | |
526 | #else | |
c80cd6bb GK |
527 | if (!nc || !nc->info->set_vnet_be) { |
528 | return -ENOSYS; | |
529 | } | |
530 | ||
531 | return nc->info->set_vnet_be(nc, is_be); | |
052bd52f | 532 | #endif |
c80cd6bb GK |
533 | } |
534 | ||
705df546 JW |
535 | int qemu_can_receive_packet(NetClientState *nc) |
536 | { | |
537 | if (nc->receive_disabled) { | |
538 | return 0; | |
539 | } else if (nc->info->can_receive && | |
540 | !nc->info->can_receive(nc)) { | |
541 | return 0; | |
542 | } | |
543 | return 1; | |
544 | } | |
545 | ||
4e68f7a0 | 546 | int qemu_can_send_packet(NetClientState *sender) |
63a01ef8 | 547 | { |
e1d64c08 HZ |
548 | int vm_running = runstate_is_running(); |
549 | ||
550 | if (!vm_running) { | |
551 | return 0; | |
552 | } | |
553 | ||
a005d073 | 554 | if (!sender->peer) { |
d80b9fc6 MM |
555 | return 1; |
556 | } | |
557 | ||
705df546 | 558 | return qemu_can_receive_packet(sender->peer); |
63a01ef8 AL |
559 | } |
560 | ||
e64c770d YH |
561 | static ssize_t filter_receive_iov(NetClientState *nc, |
562 | NetFilterDirection direction, | |
563 | NetClientState *sender, | |
564 | unsigned flags, | |
565 | const struct iovec *iov, | |
566 | int iovcnt, | |
567 | NetPacketSent *sent_cb) | |
568 | { | |
569 | ssize_t ret = 0; | |
570 | NetFilterState *nf = NULL; | |
571 | ||
25aaadf0 LZ |
572 | if (direction == NET_FILTER_DIRECTION_TX) { |
573 | QTAILQ_FOREACH(nf, &nc->filters, next) { | |
574 | ret = qemu_netfilter_receive(nf, direction, sender, flags, iov, | |
575 | iovcnt, sent_cb); | |
576 | if (ret) { | |
577 | return ret; | |
578 | } | |
579 | } | |
580 | } else { | |
eae3eb3e | 581 | QTAILQ_FOREACH_REVERSE(nf, &nc->filters, next) { |
25aaadf0 LZ |
582 | ret = qemu_netfilter_receive(nf, direction, sender, flags, iov, |
583 | iovcnt, sent_cb); | |
584 | if (ret) { | |
585 | return ret; | |
586 | } | |
e64c770d YH |
587 | } |
588 | } | |
589 | ||
590 | return ret; | |
591 | } | |
592 | ||
593 | static ssize_t filter_receive(NetClientState *nc, | |
594 | NetFilterDirection direction, | |
595 | NetClientState *sender, | |
596 | unsigned flags, | |
597 | const uint8_t *data, | |
598 | size_t size, | |
599 | NetPacketSent *sent_cb) | |
600 | { | |
601 | struct iovec iov = { | |
602 | .iov_base = (void *)data, | |
603 | .iov_len = size | |
604 | }; | |
605 | ||
606 | return filter_receive_iov(nc, direction, sender, flags, &iov, 1, sent_cb); | |
607 | } | |
608 | ||
35277d14 | 609 | void qemu_purge_queued_packets(NetClientState *nc) |
8cad5516 | 610 | { |
35277d14 | 611 | if (!nc->peer) { |
d80b9fc6 | 612 | return; |
9a6ecb30 | 613 | } |
d80b9fc6 | 614 | |
067404be | 615 | qemu_net_queue_purge(nc->peer->incoming_queue, nc); |
8cad5516 MM |
616 | } |
617 | ||
ca77d85e | 618 | void qemu_flush_or_purge_queued_packets(NetClientState *nc, bool purge) |
e94667b9 | 619 | { |
35277d14 | 620 | nc->receive_disabled = 0; |
9a6ecb30 | 621 | |
f394b2e2 | 622 | if (nc->peer && nc->peer->info->type == NET_CLIENT_DRIVER_HUBPORT) { |
199ee608 LR |
623 | if (net_hub_flush(nc->peer)) { |
624 | qemu_notify_event(); | |
625 | } | |
199ee608 | 626 | } |
067404be | 627 | if (qemu_net_queue_flush(nc->incoming_queue)) { |
987a9b48 PB |
628 | /* We emptied the queue successfully, signal to the IO thread to repoll |
629 | * the file descriptor (for tap, for example). | |
630 | */ | |
631 | qemu_notify_event(); | |
ca77d85e MT |
632 | } else if (purge) { |
633 | /* Unable to empty the queue, purge remaining packets */ | |
5fe19fb8 | 634 | qemu_net_queue_purge(nc->incoming_queue, nc->peer); |
987a9b48 | 635 | } |
e94667b9 MM |
636 | } |
637 | ||
ca77d85e MT |
638 | void qemu_flush_queued_packets(NetClientState *nc) |
639 | { | |
640 | qemu_flush_or_purge_queued_packets(nc, false); | |
641 | } | |
642 | ||
4e68f7a0 | 643 | static ssize_t qemu_send_packet_async_with_flags(NetClientState *sender, |
ca77d175 MM |
644 | unsigned flags, |
645 | const uint8_t *buf, int size, | |
646 | NetPacketSent *sent_cb) | |
764a4d1d | 647 | { |
9a6ecb30 | 648 | NetQueue *queue; |
e64c770d | 649 | int ret; |
436e5e53 | 650 | |
63a01ef8 | 651 | #ifdef DEBUG_NET |
d80b9fc6 | 652 | printf("qemu_send_packet_async:\n"); |
b42581f5 | 653 | qemu_hexdump(stdout, "net", buf, size); |
63a01ef8 | 654 | #endif |
f3b6c7fc | 655 | |
a005d073 | 656 | if (sender->link_down || !sender->peer) { |
9a6ecb30 MM |
657 | return size; |
658 | } | |
659 | ||
e64c770d YH |
660 | /* Let filters handle the packet first */ |
661 | ret = filter_receive(sender, NET_FILTER_DIRECTION_TX, | |
662 | sender, flags, buf, size, sent_cb); | |
663 | if (ret) { | |
664 | return ret; | |
665 | } | |
666 | ||
667 | ret = filter_receive(sender->peer, NET_FILTER_DIRECTION_RX, | |
668 | sender, flags, buf, size, sent_cb); | |
669 | if (ret) { | |
670 | return ret; | |
671 | } | |
672 | ||
067404be | 673 | queue = sender->peer->incoming_queue; |
9a6ecb30 | 674 | |
ca77d175 MM |
675 | return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb); |
676 | } | |
677 | ||
4e68f7a0 | 678 | ssize_t qemu_send_packet_async(NetClientState *sender, |
ca77d175 MM |
679 | const uint8_t *buf, int size, |
680 | NetPacketSent *sent_cb) | |
681 | { | |
682 | return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE, | |
683 | buf, size, sent_cb); | |
f3b6c7fc MM |
684 | } |
685 | ||
625a526b | 686 | ssize_t qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size) |
f3b6c7fc | 687 | { |
625a526b | 688 | return qemu_send_packet_async(nc, buf, size, NULL); |
63a01ef8 AL |
689 | } |
690 | ||
705df546 JW |
691 | ssize_t qemu_receive_packet(NetClientState *nc, const uint8_t *buf, int size) |
692 | { | |
693 | if (!qemu_can_receive_packet(nc)) { | |
694 | return 0; | |
695 | } | |
696 | ||
697 | return qemu_net_queue_receive(nc->incoming_queue, buf, size); | |
698 | } | |
699 | ||
700 | ssize_t qemu_receive_packet_iov(NetClientState *nc, const struct iovec *iov, | |
701 | int iovcnt) | |
702 | { | |
703 | if (!qemu_can_receive_packet(nc)) { | |
704 | return 0; | |
705 | } | |
706 | ||
707 | return qemu_net_queue_receive_iov(nc->incoming_queue, iov, iovcnt); | |
708 | } | |
709 | ||
35277d14 | 710 | ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size) |
ca77d175 | 711 | { |
35277d14 | 712 | return qemu_send_packet_async_with_flags(nc, QEMU_NET_PACKET_FLAG_RAW, |
ca77d175 MM |
713 | buf, size, NULL); |
714 | } | |
715 | ||
35277d14 | 716 | static ssize_t nc_sendv_compat(NetClientState *nc, const struct iovec *iov, |
fefe2a78 | 717 | int iovcnt, unsigned flags) |
fbe78f4f | 718 | { |
74044c8f | 719 | uint8_t *buf = NULL; |
fefe2a78 | 720 | uint8_t *buffer; |
ce053661 | 721 | size_t offset; |
74044c8f | 722 | ssize_t ret; |
fbe78f4f | 723 | |
fefe2a78 YH |
724 | if (iovcnt == 1) { |
725 | buffer = iov[0].iov_base; | |
726 | offset = iov[0].iov_len; | |
727 | } else { | |
47f9f158 PL |
728 | offset = iov_size(iov, iovcnt); |
729 | if (offset > NET_BUFSIZE) { | |
730 | return -1; | |
731 | } | |
732 | buf = g_malloc(offset); | |
fefe2a78 | 733 | buffer = buf; |
47f9f158 | 734 | offset = iov_to_buf(iov, iovcnt, 0, buf, offset); |
fefe2a78 | 735 | } |
fbe78f4f | 736 | |
fefe2a78 | 737 | if (flags & QEMU_NET_PACKET_FLAG_RAW && nc->info->receive_raw) { |
74044c8f | 738 | ret = nc->info->receive_raw(nc, buffer, offset); |
fefe2a78 | 739 | } else { |
74044c8f | 740 | ret = nc->info->receive(nc, buffer, offset); |
fefe2a78 | 741 | } |
74044c8f PD |
742 | |
743 | g_free(buf); | |
744 | return ret; | |
fbe78f4f AL |
745 | } |
746 | ||
25c01bd1 JW |
747 | static ssize_t qemu_deliver_packet_iov(NetClientState *sender, |
748 | unsigned flags, | |
749 | const struct iovec *iov, | |
750 | int iovcnt, | |
751 | void *opaque) | |
9a6ecb30 | 752 | { |
35277d14 | 753 | NetClientState *nc = opaque; |
c67f5dc1 | 754 | int ret; |
9a6ecb30 | 755 | |
1592a994 | 756 | |
35277d14 | 757 | if (nc->link_down) { |
25c01bd1 | 758 | return iov_size(iov, iovcnt); |
9a6ecb30 MM |
759 | } |
760 | ||
c67f5dc1 SH |
761 | if (nc->receive_disabled) { |
762 | return 0; | |
763 | } | |
764 | ||
ca1ee3d6 | 765 | if (nc->info->receive_iov && !(flags & QEMU_NET_PACKET_FLAG_RAW)) { |
c67f5dc1 | 766 | ret = nc->info->receive_iov(nc, iov, iovcnt); |
9a6ecb30 | 767 | } else { |
fefe2a78 | 768 | ret = nc_sendv_compat(nc, iov, iovcnt, flags); |
c67f5dc1 SH |
769 | } |
770 | ||
771 | if (ret == 0) { | |
772 | nc->receive_disabled = 1; | |
e94667b9 | 773 | } |
c67f5dc1 SH |
774 | |
775 | return ret; | |
e94667b9 MM |
776 | } |
777 | ||
4e68f7a0 | 778 | ssize_t qemu_sendv_packet_async(NetClientState *sender, |
f3b6c7fc MM |
779 | const struct iovec *iov, int iovcnt, |
780 | NetPacketSent *sent_cb) | |
e94667b9 | 781 | { |
9a6ecb30 | 782 | NetQueue *queue; |
25c01bd1 | 783 | size_t size = iov_size(iov, iovcnt); |
e64c770d | 784 | int ret; |
9a6ecb30 | 785 | |
25c01bd1 JW |
786 | if (size > NET_BUFSIZE) { |
787 | return size; | |
788 | } | |
789 | ||
a005d073 | 790 | if (sender->link_down || !sender->peer) { |
25c01bd1 | 791 | return size; |
e94667b9 MM |
792 | } |
793 | ||
e64c770d YH |
794 | /* Let filters handle the packet first */ |
795 | ret = filter_receive_iov(sender, NET_FILTER_DIRECTION_TX, sender, | |
796 | QEMU_NET_PACKET_FLAG_NONE, iov, iovcnt, sent_cb); | |
797 | if (ret) { | |
798 | return ret; | |
799 | } | |
800 | ||
801 | ret = filter_receive_iov(sender->peer, NET_FILTER_DIRECTION_RX, sender, | |
802 | QEMU_NET_PACKET_FLAG_NONE, iov, iovcnt, sent_cb); | |
803 | if (ret) { | |
804 | return ret; | |
805 | } | |
806 | ||
067404be | 807 | queue = sender->peer->incoming_queue; |
9a6ecb30 | 808 | |
c0b8e49c MM |
809 | return qemu_net_queue_send_iov(queue, sender, |
810 | QEMU_NET_PACKET_FLAG_NONE, | |
811 | iov, iovcnt, sent_cb); | |
fbe78f4f AL |
812 | } |
813 | ||
f3b6c7fc | 814 | ssize_t |
35277d14 | 815 | qemu_sendv_packet(NetClientState *nc, const struct iovec *iov, int iovcnt) |
f3b6c7fc | 816 | { |
35277d14 | 817 | return qemu_sendv_packet_async(nc, iov, iovcnt, NULL); |
63a01ef8 AL |
818 | } |
819 | ||
4e68f7a0 | 820 | NetClientState *qemu_find_netdev(const char *id) |
5869c4d5 | 821 | { |
35277d14 | 822 | NetClientState *nc; |
5869c4d5 | 823 | |
35277d14 | 824 | QTAILQ_FOREACH(nc, &net_clients, next) { |
f394b2e2 | 825 | if (nc->info->type == NET_CLIENT_DRIVER_NIC) |
85dde9a9 | 826 | continue; |
35277d14 SH |
827 | if (!strcmp(nc->name, id)) { |
828 | return nc; | |
5869c4d5 MM |
829 | } |
830 | } | |
831 | ||
832 | return NULL; | |
833 | } | |
834 | ||
6c51ae73 | 835 | int qemu_find_net_clients_except(const char *id, NetClientState **ncs, |
f394b2e2 | 836 | NetClientDriver type, int max) |
6c51ae73 JW |
837 | { |
838 | NetClientState *nc; | |
839 | int ret = 0; | |
840 | ||
841 | QTAILQ_FOREACH(nc, &net_clients, next) { | |
842 | if (nc->info->type == type) { | |
843 | continue; | |
844 | } | |
40d19394 | 845 | if (!id || !strcmp(nc->name, id)) { |
6c51ae73 JW |
846 | if (ret < max) { |
847 | ncs[ret] = nc; | |
848 | } | |
849 | ret++; | |
850 | } | |
851 | } | |
852 | ||
853 | return ret; | |
854 | } | |
855 | ||
7697079b AL |
856 | static int nic_get_free_idx(void) |
857 | { | |
858 | int index; | |
859 | ||
860 | for (index = 0; index < MAX_NICS; index++) | |
861 | if (!nd_table[index].used) | |
862 | return index; | |
863 | return -1; | |
864 | } | |
865 | ||
07caea31 MA |
866 | int qemu_show_nic_models(const char *arg, const char *const *models) |
867 | { | |
868 | int i; | |
869 | ||
c8057f95 | 870 | if (!arg || !is_help_option(arg)) { |
07caea31 | 871 | return 0; |
c8057f95 | 872 | } |
07caea31 | 873 | |
7b71e03a TH |
874 | printf("Supported NIC models:\n"); |
875 | for (i = 0 ; models[i]; i++) { | |
876 | printf("%s\n", models[i]); | |
877 | } | |
07caea31 MA |
878 | return 1; |
879 | } | |
880 | ||
d07f22c5 AL |
881 | void qemu_check_nic_model(NICInfo *nd, const char *model) |
882 | { | |
883 | const char *models[2]; | |
884 | ||
885 | models[0] = model; | |
886 | models[1] = NULL; | |
887 | ||
07caea31 MA |
888 | if (qemu_show_nic_models(nd->model, models)) |
889 | exit(0); | |
890 | if (qemu_find_nic_model(nd, models, model) < 0) | |
891 | exit(1); | |
d07f22c5 AL |
892 | } |
893 | ||
07caea31 MA |
894 | int qemu_find_nic_model(NICInfo *nd, const char * const *models, |
895 | const char *default_model) | |
d07f22c5 | 896 | { |
07caea31 | 897 | int i; |
d07f22c5 AL |
898 | |
899 | if (!nd->model) | |
7267c094 | 900 | nd->model = g_strdup(default_model); |
d07f22c5 | 901 | |
07caea31 MA |
902 | for (i = 0 ; models[i]; i++) { |
903 | if (strcmp(nd->model, models[i]) == 0) | |
904 | return i; | |
d07f22c5 AL |
905 | } |
906 | ||
6daf194d | 907 | error_report("Unsupported NIC model: %s", nd->model); |
07caea31 | 908 | return -1; |
d07f22c5 AL |
909 | } |
910 | ||
cebea510 | 911 | static int net_init_nic(const Netdev *netdev, const char *name, |
a30ecde6 | 912 | NetClientState *peer, Error **errp) |
f83c6e10 MM |
913 | { |
914 | int idx; | |
915 | NICInfo *nd; | |
2456f36f LE |
916 | const NetLegacyNicOptions *nic; |
917 | ||
f394b2e2 EB |
918 | assert(netdev->type == NET_CLIENT_DRIVER_NIC); |
919 | nic = &netdev->u.nic; | |
f83c6e10 MM |
920 | |
921 | idx = nic_get_free_idx(); | |
922 | if (idx == -1 || nb_nics >= MAX_NICS) { | |
66308868 | 923 | error_setg(errp, "too many NICs"); |
f83c6e10 MM |
924 | return -1; |
925 | } | |
926 | ||
927 | nd = &nd_table[idx]; | |
928 | ||
929 | memset(nd, 0, sizeof(*nd)); | |
930 | ||
2456f36f LE |
931 | if (nic->has_netdev) { |
932 | nd->netdev = qemu_find_netdev(nic->netdev); | |
5869c4d5 | 933 | if (!nd->netdev) { |
66308868 | 934 | error_setg(errp, "netdev '%s' not found", nic->netdev); |
5869c4d5 MM |
935 | return -1; |
936 | } | |
937 | } else { | |
d33d93b2 SH |
938 | assert(peer); |
939 | nd->netdev = peer; | |
5869c4d5 | 940 | } |
c64f50d1 | 941 | nd->name = g_strdup(name); |
2456f36f LE |
942 | if (nic->has_model) { |
943 | nd->model = g_strdup(nic->model); | |
f83c6e10 | 944 | } |
2456f36f LE |
945 | if (nic->has_addr) { |
946 | nd->devaddr = g_strdup(nic->addr); | |
f83c6e10 MM |
947 | } |
948 | ||
2456f36f LE |
949 | if (nic->has_macaddr && |
950 | net_parse_macaddr(nd->macaddr.a, nic->macaddr) < 0) { | |
66308868 | 951 | error_setg(errp, "invalid syntax for ethernet address"); |
f83c6e10 MM |
952 | return -1; |
953 | } | |
d60b20cf DK |
954 | if (nic->has_macaddr && |
955 | is_multicast_ether_addr(nd->macaddr.a)) { | |
66308868 MA |
956 | error_setg(errp, |
957 | "NIC cannot have multicast MAC address (odd 1st byte)"); | |
d60b20cf DK |
958 | return -1; |
959 | } | |
6eed1856 | 960 | qemu_macaddr_default_if_unset(&nd->macaddr); |
f83c6e10 | 961 | |
2456f36f LE |
962 | if (nic->has_vectors) { |
963 | if (nic->vectors > 0x7ffffff) { | |
66308868 | 964 | error_setg(errp, "invalid # of vectors: %"PRIu32, nic->vectors); |
2456f36f LE |
965 | return -1; |
966 | } | |
967 | nd->nvectors = nic->vectors; | |
968 | } else { | |
969 | nd->nvectors = DEV_NVECTORS_UNSPECIFIED; | |
f83c6e10 MM |
970 | } |
971 | ||
972 | nd->used = 1; | |
f83c6e10 MM |
973 | nb_nics++; |
974 | ||
975 | return idx; | |
976 | } | |
977 | ||
6687b79d | 978 | |
f394b2e2 | 979 | static int (* const net_client_init_fun[NET_CLIENT_DRIVER__MAX])( |
cebea510 | 980 | const Netdev *netdev, |
6687b79d | 981 | const char *name, |
a30ecde6 | 982 | NetClientState *peer, Error **errp) = { |
f394b2e2 | 983 | [NET_CLIENT_DRIVER_NIC] = net_init_nic, |
ec302ffd | 984 | #ifdef CONFIG_SLIRP |
f394b2e2 | 985 | [NET_CLIENT_DRIVER_USER] = net_init_slirp, |
2944e4ec | 986 | #endif |
f394b2e2 EB |
987 | [NET_CLIENT_DRIVER_TAP] = net_init_tap, |
988 | [NET_CLIENT_DRIVER_SOCKET] = net_init_socket, | |
dd51058d | 989 | #ifdef CONFIG_VDE |
f394b2e2 | 990 | [NET_CLIENT_DRIVER_VDE] = net_init_vde, |
58952137 VM |
991 | #endif |
992 | #ifdef CONFIG_NETMAP | |
f394b2e2 | 993 | [NET_CLIENT_DRIVER_NETMAP] = net_init_netmap, |
dd51058d | 994 | #endif |
2944e4ec | 995 | #ifdef CONFIG_NET_BRIDGE |
f394b2e2 | 996 | [NET_CLIENT_DRIVER_BRIDGE] = net_init_bridge, |
6687b79d | 997 | #endif |
f394b2e2 | 998 | [NET_CLIENT_DRIVER_HUBPORT] = net_init_hubport, |
56f41de7 | 999 | #ifdef CONFIG_VHOST_NET_USER |
f394b2e2 | 1000 | [NET_CLIENT_DRIVER_VHOST_USER] = net_init_vhost_user, |
03ce5744 | 1001 | #endif |
1e0a84ea CL |
1002 | #ifdef CONFIG_VHOST_NET_VDPA |
1003 | [NET_CLIENT_DRIVER_VHOST_VDPA] = net_init_vhost_vdpa, | |
1004 | #endif | |
015a33bd | 1005 | #ifdef CONFIG_L2TPV3 |
f394b2e2 | 1006 | [NET_CLIENT_DRIVER_L2TPV3] = net_init_l2tpv3, |
3fb69aa1 | 1007 | #endif |
f83c6e10 MM |
1008 | }; |
1009 | ||
6687b79d | 1010 | |
71830d84 | 1011 | static int net_client_init1(const Netdev *netdev, bool is_netdev, Error **errp) |
f83c6e10 | 1012 | { |
4ef0defb | 1013 | NetClientState *peer = NULL; |
831734cc | 1014 | NetClientState *nc; |
f83c6e10 | 1015 | |
5294e2c7 | 1016 | if (is_netdev) { |
857d2087 | 1017 | if (netdev->type == NET_CLIENT_DRIVER_NIC || |
f394b2e2 | 1018 | !net_client_init_fun[netdev->type]) { |
c6bd8c70 MA |
1019 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "type", |
1020 | "a netdev backend type"); | |
f6b134ac MM |
1021 | return -1; |
1022 | } | |
6687b79d | 1023 | } else { |
71830d84 | 1024 | if (netdev->type == NET_CLIENT_DRIVER_NONE) { |
d139e9a6 | 1025 | return 0; /* nothing to do */ |
1e81aba5 | 1026 | } |
71830d84 TH |
1027 | if (netdev->type == NET_CLIENT_DRIVER_HUBPORT || |
1028 | !net_client_init_fun[netdev->type]) { | |
d139e9a6 SH |
1029 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "type", |
1030 | "a net backend type (maybe it is not compiled " | |
1031 | "into this binary)"); | |
1032 | return -1; | |
1033 | } | |
f6b134ac | 1034 | |
af1a5c3e | 1035 | /* Do not add to a hub if it's a nic with a netdev= parameter. */ |
f394b2e2 | 1036 | if (netdev->type != NET_CLIENT_DRIVER_NIC || |
71830d84 | 1037 | !netdev->u.nic.has_netdev) { |
af1a5c3e | 1038 | peer = net_hub_add_port(0, NULL, NULL); |
a2dbe135 | 1039 | } |
4ef0defb | 1040 | } |
6687b79d | 1041 | |
831734cc MA |
1042 | nc = qemu_find_netdev(netdev->id); |
1043 | if (nc) { | |
1044 | error_setg(errp, "Duplicate ID '%s'", netdev->id); | |
1045 | return -1; | |
1046 | } | |
1047 | ||
9d903f30 | 1048 | if (net_client_init_fun[netdev->type](netdev, netdev->id, peer, errp) < 0) { |
4ef0defb SH |
1049 | /* FIXME drop when all init functions store an Error */ |
1050 | if (errp && !*errp) { | |
f820af87 | 1051 | error_setg(errp, "Device '%s' could not be initialized", |
977c736f | 1052 | NetClientDriver_str(netdev->type)); |
f6b134ac | 1053 | } |
4ef0defb | 1054 | return -1; |
f6b134ac | 1055 | } |
08712fcb EB |
1056 | |
1057 | if (is_netdev) { | |
08712fcb EB |
1058 | nc = qemu_find_netdev(netdev->id); |
1059 | assert(nc); | |
1060 | nc->is_netdev = true; | |
1061 | } | |
1062 | ||
6687b79d LE |
1063 | return 0; |
1064 | } | |
1065 | ||
ad6f932f | 1066 | void show_netdevs(void) |
547203ea TH |
1067 | { |
1068 | int idx; | |
1069 | const char *available_netdevs[] = { | |
1070 | "socket", | |
1071 | "hubport", | |
1072 | "tap", | |
1073 | #ifdef CONFIG_SLIRP | |
1074 | "user", | |
1075 | #endif | |
1076 | #ifdef CONFIG_L2TPV3 | |
1077 | "l2tpv3", | |
1078 | #endif | |
1079 | #ifdef CONFIG_VDE | |
1080 | "vde", | |
1081 | #endif | |
1082 | #ifdef CONFIG_NET_BRIDGE | |
1083 | "bridge", | |
1084 | #endif | |
1085 | #ifdef CONFIG_NETMAP | |
1086 | "netmap", | |
1087 | #endif | |
1088 | #ifdef CONFIG_POSIX | |
1089 | "vhost-user", | |
1bc211a1 CL |
1090 | #endif |
1091 | #ifdef CONFIG_VHOST_VDPA | |
1092 | "vhost-vdpa", | |
547203ea TH |
1093 | #endif |
1094 | }; | |
1095 | ||
ad6f932f | 1096 | qemu_printf("Available netdev backend types:\n"); |
547203ea | 1097 | for (idx = 0; idx < ARRAY_SIZE(available_netdevs); idx++) { |
ad6f932f | 1098 | qemu_printf("%s\n", available_netdevs[idx]); |
547203ea TH |
1099 | } |
1100 | } | |
f6b134ac | 1101 | |
aa09a485 | 1102 | static int net_client_init(QemuOpts *opts, bool is_netdev, Error **errp) |
6687b79d | 1103 | { |
c1112b2d | 1104 | gchar **substrings = NULL; |
71830d84 | 1105 | Netdev *object = NULL; |
6687b79d | 1106 | int ret = -1; |
09204eac | 1107 | Visitor *v = opts_visitor_new(opts); |
f83c6e10 | 1108 | |
ad6f932f PB |
1109 | /* Parse convenience option format ip6-net=fec0::0[/64] */ |
1110 | const char *ip6_net = qemu_opt_get(opts, "ipv6-net"); | |
7aac531e | 1111 | |
ad6f932f PB |
1112 | if (ip6_net) { |
1113 | char *prefix_addr; | |
1114 | unsigned long prefix_len = 64; /* Default 64bit prefix length. */ | |
c1112b2d | 1115 | |
ad6f932f PB |
1116 | substrings = g_strsplit(ip6_net, "/", 2); |
1117 | if (!substrings || !substrings[0]) { | |
1118 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "ipv6-net", | |
1119 | "a valid IPv6 prefix"); | |
1120 | goto out; | |
1121 | } | |
c1112b2d | 1122 | |
ad6f932f | 1123 | prefix_addr = substrings[0]; |
7aac531e | 1124 | |
ad6f932f PB |
1125 | /* Handle user-specified prefix length. */ |
1126 | if (substrings[1] && | |
1127 | qemu_strtoul(substrings[1], NULL, 10, &prefix_len)) | |
1128 | { | |
1129 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, | |
1130 | "ipv6-prefixlen", "a number"); | |
1131 | goto out; | |
7aac531e | 1132 | } |
ad6f932f PB |
1133 | |
1134 | qemu_opt_set(opts, "ipv6-prefix", prefix_addr, &error_abort); | |
1135 | qemu_opt_set_number(opts, "ipv6-prefixlen", prefix_len, | |
1136 | &error_abort); | |
1137 | qemu_opt_unset(opts, "ipv6-net"); | |
7aac531e YB |
1138 | } |
1139 | ||
71830d84 TH |
1140 | /* Create an ID for -net if the user did not specify one */ |
1141 | if (!is_netdev && !qemu_opts_id(opts)) { | |
27eb3722 | 1142 | qemu_opts_set_id(opts, id_generate(ID_NET)); |
f83c6e10 MM |
1143 | } |
1144 | ||
14217038 MA |
1145 | if (visit_type_Netdev(v, NULL, &object, errp)) { |
1146 | ret = net_client_init1(object, is_netdev, errp); | |
6687b79d LE |
1147 | } |
1148 | ||
71830d84 | 1149 | qapi_free_Netdev(object); |
6687b79d | 1150 | |
21c520d0 | 1151 | out: |
c1112b2d | 1152 | g_strfreev(substrings); |
09204eac | 1153 | visit_free(v); |
6687b79d | 1154 | return ret; |
f83c6e10 MM |
1155 | } |
1156 | ||
928059a3 LC |
1157 | void netdev_add(QemuOpts *opts, Error **errp) |
1158 | { | |
0e55c381 | 1159 | net_client_init(opts, true, errp); |
928059a3 LC |
1160 | } |
1161 | ||
db2a380c | 1162 | void qmp_netdev_add(Netdev *netdev, Error **errp) |
ae82d324 | 1163 | { |
e73b4317 PB |
1164 | if (!id_wellformed(netdev->id)) { |
1165 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "id", "an identifier"); | |
1166 | return; | |
1167 | } | |
1168 | ||
08712fcb | 1169 | net_client_init1(netdev, true, errp); |
ae82d324 MA |
1170 | } |
1171 | ||
5f964155 | 1172 | void qmp_netdev_del(const char *id, Error **errp) |
ae82d324 | 1173 | { |
35277d14 | 1174 | NetClientState *nc; |
831734cc | 1175 | QemuOpts *opts; |
ae82d324 | 1176 | |
35277d14 SH |
1177 | nc = qemu_find_netdev(id); |
1178 | if (!nc) { | |
75158ebb MA |
1179 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
1180 | "Device '%s' not found", id); | |
5f964155 | 1181 | return; |
ae82d324 | 1182 | } |
5f964155 | 1183 | |
08712fcb | 1184 | if (!nc->is_netdev) { |
645c9496 SH |
1185 | error_setg(errp, "Device '%s' is not a netdev", id); |
1186 | return; | |
1187 | } | |
1188 | ||
b20c6b9e | 1189 | qemu_del_net_client(nc); |
831734cc MA |
1190 | |
1191 | /* | |
1192 | * Wart: we need to delete the QemuOpts associated with netdevs | |
1193 | * created via CLI or HMP, to avoid bogus "Duplicate ID" errors in | |
1194 | * HMP netdev_add. | |
1195 | */ | |
1196 | opts = qemu_opts_find(qemu_find_opts("netdev"), id); | |
1197 | if (opts) { | |
1198 | qemu_opts_del(opts); | |
1199 | } | |
ae82d324 MA |
1200 | } |
1201 | ||
aa9156f4 HZ |
1202 | static void netfilter_print_info(Monitor *mon, NetFilterState *nf) |
1203 | { | |
1204 | char *str; | |
1205 | ObjectProperty *prop; | |
1206 | ObjectPropertyIterator iter; | |
3b098d56 | 1207 | Visitor *v; |
aa9156f4 HZ |
1208 | |
1209 | /* generate info str */ | |
1210 | object_property_iter_init(&iter, OBJECT(nf)); | |
1211 | while ((prop = object_property_iter_next(&iter))) { | |
1212 | if (!strcmp(prop->name, "type")) { | |
1213 | continue; | |
1214 | } | |
3b098d56 | 1215 | v = string_output_visitor_new(false, &str); |
5325cc34 | 1216 | object_property_get(OBJECT(nf), prop->name, v, NULL); |
3b098d56 EB |
1217 | visit_complete(v, &str); |
1218 | visit_free(v); | |
aa9156f4 HZ |
1219 | monitor_printf(mon, ",%s=%s", prop->name, str); |
1220 | g_free(str); | |
1221 | } | |
1222 | monitor_printf(mon, "\n"); | |
1223 | } | |
1224 | ||
a0724776 AK |
1225 | static char *generate_info_str(NetClientState *nc) |
1226 | { | |
1227 | NetdevInfo *ni = nc->stored_config; | |
1228 | char *ret_out = NULL; | |
1229 | Visitor *v; | |
1230 | ||
1231 | /* Use legacy field info_str for NIC and hubports */ | |
1232 | if ((nc->info->type == NET_CLIENT_DRIVER_NIC) || | |
1233 | (nc->info->type == NET_CLIENT_DRIVER_HUBPORT)) { | |
1234 | return g_strdup(nc->info_str ? nc->info_str : ""); | |
1235 | } | |
1236 | ||
1237 | if (!ni) { | |
1238 | return g_malloc0(1); | |
1239 | } | |
1240 | ||
1241 | v = hmp_output_visitor_new(&ret_out); | |
1242 | if (visit_type_NetdevInfo(v, "", &ni, NULL)) { | |
1243 | visit_complete(v, &ret_out); | |
1244 | } | |
1245 | visit_free(v); | |
1246 | ||
1247 | return ret_out; | |
1248 | } | |
1249 | ||
1a859593 | 1250 | void print_net_client(Monitor *mon, NetClientState *nc) |
44e798d3 | 1251 | { |
a4960f52 | 1252 | NetFilterState *nf; |
a0724776 | 1253 | char *info_str = generate_info_str(nc); |
a4960f52 | 1254 | |
1ceef9f2 JW |
1255 | monitor_printf(mon, "%s: index=%d,type=%s,%s\n", nc->name, |
1256 | nc->queue_index, | |
977c736f | 1257 | NetClientDriver_str(nc->info->type), |
a0724776 AK |
1258 | info_str); |
1259 | g_free(info_str); | |
1260 | ||
a4960f52 YH |
1261 | if (!QTAILQ_EMPTY(&nc->filters)) { |
1262 | monitor_printf(mon, "filters:\n"); | |
1263 | } | |
1264 | QTAILQ_FOREACH(nf, &nc->filters, next) { | |
7a309cc9 MA |
1265 | monitor_printf(mon, " - %s: type=%s", |
1266 | object_get_canonical_path_component(OBJECT(nf)), | |
aa9156f4 HZ |
1267 | object_get_typename(OBJECT(nf))); |
1268 | netfilter_print_info(mon, nf); | |
a4960f52 | 1269 | } |
44e798d3 JK |
1270 | } |
1271 | ||
b1be4280 AK |
1272 | RxFilterInfoList *qmp_query_rx_filter(bool has_name, const char *name, |
1273 | Error **errp) | |
1274 | { | |
1275 | NetClientState *nc; | |
95b3a8c8 | 1276 | RxFilterInfoList *filter_list = NULL, **tail = &filter_list; |
b1be4280 AK |
1277 | |
1278 | QTAILQ_FOREACH(nc, &net_clients, next) { | |
b1be4280 AK |
1279 | RxFilterInfo *info; |
1280 | ||
1281 | if (has_name && strcmp(nc->name, name) != 0) { | |
1282 | continue; | |
1283 | } | |
1284 | ||
1285 | /* only query rx-filter information of NIC */ | |
f394b2e2 | 1286 | if (nc->info->type != NET_CLIENT_DRIVER_NIC) { |
b1be4280 AK |
1287 | if (has_name) { |
1288 | error_setg(errp, "net client(%s) isn't a NIC", name); | |
e9d635ea | 1289 | assert(!filter_list); |
9083da1d | 1290 | return NULL; |
b1be4280 AK |
1291 | } |
1292 | continue; | |
1293 | } | |
1294 | ||
5320c2ca VY |
1295 | /* only query information on queue 0 since the info is per nic, |
1296 | * not per queue | |
1297 | */ | |
1298 | if (nc->queue_index != 0) | |
1299 | continue; | |
1300 | ||
b1be4280 AK |
1301 | if (nc->info->query_rx_filter) { |
1302 | info = nc->info->query_rx_filter(nc); | |
95b3a8c8 | 1303 | QAPI_LIST_APPEND(tail, info); |
b1be4280 AK |
1304 | } else if (has_name) { |
1305 | error_setg(errp, "net client(%s) doesn't support" | |
1306 | " rx-filter querying", name); | |
e9d635ea | 1307 | assert(!filter_list); |
9083da1d | 1308 | return NULL; |
b1be4280 | 1309 | } |
638fb141 MA |
1310 | |
1311 | if (has_name) { | |
1312 | break; | |
1313 | } | |
b1be4280 AK |
1314 | } |
1315 | ||
9083da1d | 1316 | if (filter_list == NULL && has_name) { |
b1be4280 AK |
1317 | error_setg(errp, "invalid net client name: %s", name); |
1318 | } | |
1319 | ||
1320 | return filter_list; | |
1321 | } | |
1322 | ||
d32ad10a AK |
1323 | NetdevInfoList *qmp_query_netdev(Error **errp) |
1324 | { | |
1325 | NetdevInfoList *list = NULL; | |
1326 | NetClientState *nc; | |
1327 | ||
1328 | QTAILQ_FOREACH(nc, &net_clients, next) { | |
1329 | /* | |
1330 | * Only look at netdevs (backend network devices), not for each queue | |
1331 | * or NIC / hubport | |
1332 | */ | |
1333 | if (nc->stored_config) { | |
1334 | NetdevInfo *element = QAPI_CLONE(NetdevInfo, nc->stored_config); | |
1335 | ||
1336 | g_free(element->id); /* Need to dealloc empty id after clone */ | |
1337 | element->id = g_strdup(nc->name); | |
1338 | ||
1339 | element->has_peer_id = nc->peer != NULL; | |
1340 | if (element->has_peer_id) { | |
1341 | element->peer_id = g_strdup(nc->peer->name); | |
1342 | } | |
1343 | ||
1344 | QAPI_LIST_PREPEND(list, element); | |
1345 | } | |
1346 | } | |
1347 | ||
1348 | return list; | |
1349 | } | |
1350 | ||
1ce6be24 | 1351 | void hmp_info_network(Monitor *mon, const QDict *qdict) |
63a01ef8 | 1352 | { |
35277d14 | 1353 | NetClientState *nc, *peer; |
f394b2e2 | 1354 | NetClientDriver type; |
63a01ef8 | 1355 | |
1a859593 ZYW |
1356 | net_hub_info(mon); |
1357 | ||
35277d14 SH |
1358 | QTAILQ_FOREACH(nc, &net_clients, next) { |
1359 | peer = nc->peer; | |
1360 | type = nc->info->type; | |
5610c3aa | 1361 | |
1a859593 ZYW |
1362 | /* Skip if already printed in hub info */ |
1363 | if (net_hub_id_for_client(nc, NULL) == 0) { | |
1364 | continue; | |
5610c3aa | 1365 | } |
1a859593 | 1366 | |
f394b2e2 | 1367 | if (!peer || type == NET_CLIENT_DRIVER_NIC) { |
35277d14 | 1368 | print_net_client(mon, nc); |
19061e63 | 1369 | } /* else it's a netdev connected to a NIC, printed with the NIC */ |
f394b2e2 | 1370 | if (peer && type == NET_CLIENT_DRIVER_NIC) { |
1a859593 | 1371 | monitor_printf(mon, " \\ "); |
44e798d3 | 1372 | print_net_client(mon, peer); |
a0104e0e | 1373 | } |
a0104e0e | 1374 | } |
63a01ef8 AL |
1375 | } |
1376 | ||
5fbba3d6 ZC |
1377 | void colo_notify_filters_event(int event, Error **errp) |
1378 | { | |
1379 | NetClientState *nc; | |
1380 | NetFilterState *nf; | |
1381 | NetFilterClass *nfc = NULL; | |
1382 | Error *local_err = NULL; | |
1383 | ||
1384 | QTAILQ_FOREACH(nc, &net_clients, next) { | |
1385 | QTAILQ_FOREACH(nf, &nc->filters, next) { | |
1386 | nfc = NETFILTER_GET_CLASS(OBJECT(nf)); | |
1387 | nfc->handle_event(nf, event, &local_err); | |
1388 | if (local_err) { | |
1389 | error_propagate(errp, local_err); | |
1390 | return; | |
1391 | } | |
1392 | } | |
1393 | } | |
1394 | } | |
1395 | ||
4b37156c | 1396 | void qmp_set_link(const char *name, bool up, Error **errp) |
436e5e53 | 1397 | { |
1ceef9f2 JW |
1398 | NetClientState *ncs[MAX_QUEUE_NUM]; |
1399 | NetClientState *nc; | |
1400 | int queues, i; | |
436e5e53 | 1401 | |
1ceef9f2 | 1402 | queues = qemu_find_net_clients_except(name, ncs, |
f394b2e2 | 1403 | NET_CLIENT_DRIVER__MAX, |
1ceef9f2 JW |
1404 | MAX_QUEUE_NUM); |
1405 | ||
1406 | if (queues == 0) { | |
75158ebb MA |
1407 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
1408 | "Device '%s' not found", name); | |
4b37156c | 1409 | return; |
436e5e53 | 1410 | } |
1ceef9f2 | 1411 | nc = ncs[0]; |
436e5e53 | 1412 | |
1ceef9f2 JW |
1413 | for (i = 0; i < queues; i++) { |
1414 | ncs[i]->link_down = !up; | |
1415 | } | |
436e5e53 | 1416 | |
35277d14 SH |
1417 | if (nc->info->link_status_changed) { |
1418 | nc->info->link_status_changed(nc); | |
665a3b07 | 1419 | } |
ab1cbe1c | 1420 | |
02d38fcb VY |
1421 | if (nc->peer) { |
1422 | /* Change peer link only if the peer is NIC and then notify peer. | |
1423 | * If the peer is a HUBPORT or a backend, we do not change the | |
1424 | * link status. | |
1425 | * | |
af1a5c3e | 1426 | * This behavior is compatible with qemu hubs where there could be |
02d38fcb VY |
1427 | * multiple clients that can still communicate with each other in |
1428 | * disconnected mode. For now maintain this compatibility. | |
1429 | */ | |
f394b2e2 | 1430 | if (nc->peer->info->type == NET_CLIENT_DRIVER_NIC) { |
02d38fcb VY |
1431 | for (i = 0; i < queues; i++) { |
1432 | ncs[i]->peer->link_down = !up; | |
1433 | } | |
1434 | } | |
1435 | if (nc->peer->info->link_status_changed) { | |
1436 | nc->peer->info->link_status_changed(nc->peer); | |
1437 | } | |
ab1cbe1c | 1438 | } |
436e5e53 AL |
1439 | } |
1440 | ||
538f0497 | 1441 | static void net_vm_change_state_handler(void *opaque, bool running, |
ca77d85e MT |
1442 | RunState state) |
1443 | { | |
625de449 FZ |
1444 | NetClientState *nc; |
1445 | NetClientState *tmp; | |
ca77d85e | 1446 | |
625de449 FZ |
1447 | QTAILQ_FOREACH_SAFE(nc, &net_clients, next, tmp) { |
1448 | if (running) { | |
1449 | /* Flush queued packets and wake up backends. */ | |
1450 | if (nc->peer && qemu_can_send_packet(nc)) { | |
1451 | qemu_flush_queued_packets(nc->peer); | |
1452 | } | |
1453 | } else { | |
1454 | /* Complete all queued packets, to guarantee we don't modify | |
1455 | * state later when VM is not running. | |
1456 | */ | |
ca77d85e MT |
1457 | qemu_flush_or_purge_queued_packets(nc, true); |
1458 | } | |
1459 | } | |
1460 | } | |
1461 | ||
63a01ef8 AL |
1462 | void net_cleanup(void) |
1463 | { | |
1ceef9f2 | 1464 | NetClientState *nc; |
577c4af9 | 1465 | |
1ceef9f2 JW |
1466 | /* We may del multiple entries during qemu_del_net_client(), |
1467 | * so QTAILQ_FOREACH_SAFE() is also not safe here. | |
1468 | */ | |
1469 | while (!QTAILQ_EMPTY(&net_clients)) { | |
1470 | nc = QTAILQ_FIRST(&net_clients); | |
f394b2e2 | 1471 | if (nc->info->type == NET_CLIENT_DRIVER_NIC) { |
948ecf21 JW |
1472 | qemu_del_nic(qemu_get_nic(nc)); |
1473 | } else { | |
1474 | qemu_del_net_client(nc); | |
1475 | } | |
577c4af9 | 1476 | } |
ca77d85e MT |
1477 | |
1478 | qemu_del_vm_change_state_handler(net_change_state_entry); | |
63a01ef8 AL |
1479 | } |
1480 | ||
668680f7 | 1481 | void net_check_clients(void) |
63a01ef8 | 1482 | { |
35277d14 | 1483 | NetClientState *nc; |
48e2faf2 | 1484 | int i; |
63a01ef8 | 1485 | |
81017645 | 1486 | net_hub_check_clients(); |
ac60cc18 | 1487 | |
35277d14 SH |
1488 | QTAILQ_FOREACH(nc, &net_clients, next) { |
1489 | if (!nc->peer) { | |
8297be80 | 1490 | warn_report("%s %s has no peer", |
b62e39b4 AF |
1491 | nc->info->type == NET_CLIENT_DRIVER_NIC |
1492 | ? "nic" : "netdev", | |
1493 | nc->name); | |
efe32fdd MA |
1494 | } |
1495 | } | |
48e2faf2 PM |
1496 | |
1497 | /* Check that all NICs requested via -net nic actually got created. | |
1498 | * NICs created via -device don't need to be checked here because | |
1499 | * they are always instantiated. | |
1500 | */ | |
1501 | for (i = 0; i < MAX_NICS; i++) { | |
1502 | NICInfo *nd = &nd_table[i]; | |
1503 | if (nd->used && !nd->instantiated) { | |
8297be80 AF |
1504 | warn_report("requested NIC (%s, model %s) " |
1505 | "was not created (not supported by this machine?)", | |
1506 | nd->name ? nd->name : "anonymous", | |
1507 | nd->model ? nd->model : "unspecified"); | |
48e2faf2 PM |
1508 | } |
1509 | } | |
63a01ef8 | 1510 | } |
dc1c9fe8 | 1511 | |
28d0de7a | 1512 | static int net_init_client(void *dummy, QemuOpts *opts, Error **errp) |
dc1c9fe8 | 1513 | { |
34f708b0 | 1514 | return net_client_init(opts, false, errp); |
f6b134ac MM |
1515 | } |
1516 | ||
28d0de7a | 1517 | static int net_init_netdev(void *dummy, QemuOpts *opts, Error **errp) |
f6b134ac | 1518 | { |
ad6f932f PB |
1519 | const char *type = qemu_opt_get(opts, "type"); |
1520 | ||
1521 | if (type && is_help_option(type)) { | |
1522 | show_netdevs(); | |
1523 | exit(0); | |
1524 | } | |
34f708b0 | 1525 | return net_client_init(opts, true, errp); |
dc1c9fe8 | 1526 | } |
4559a1db | 1527 | |
78cd6f7b TH |
1528 | /* For the convenience "--nic" parameter */ |
1529 | static int net_param_nic(void *dummy, QemuOpts *opts, Error **errp) | |
1530 | { | |
1531 | char *mac, *nd_id; | |
1532 | int idx, ret; | |
1533 | NICInfo *ni; | |
1534 | const char *type; | |
1535 | ||
1536 | type = qemu_opt_get(opts, "type"); | |
1537 | if (type && g_str_equal(type, "none")) { | |
1538 | return 0; /* Nothing to do, default_net is cleared in vl.c */ | |
1539 | } | |
1540 | ||
1541 | idx = nic_get_free_idx(); | |
1542 | if (idx == -1 || nb_nics >= MAX_NICS) { | |
1543 | error_setg(errp, "no more on-board/default NIC slots available"); | |
4559a1db LC |
1544 | return -1; |
1545 | } | |
1546 | ||
78cd6f7b TH |
1547 | if (!type) { |
1548 | qemu_opt_set(opts, "type", "user", &error_abort); | |
1549 | } | |
1550 | ||
1551 | ni = &nd_table[idx]; | |
1552 | memset(ni, 0, sizeof(*ni)); | |
1553 | ni->model = qemu_opt_get_del(opts, "model"); | |
1554 | ||
1555 | /* Create an ID if the user did not specify one */ | |
1556 | nd_id = g_strdup(qemu_opts_id(opts)); | |
1557 | if (!nd_id) { | |
27eb3722 | 1558 | nd_id = id_generate(ID_NET); |
78cd6f7b TH |
1559 | qemu_opts_set_id(opts, nd_id); |
1560 | } | |
1561 | ||
1562 | /* Handle MAC address */ | |
1563 | mac = qemu_opt_get_del(opts, "mac"); | |
1564 | if (mac) { | |
1565 | ret = net_parse_macaddr(ni->macaddr.a, mac); | |
1566 | g_free(mac); | |
1567 | if (ret) { | |
1568 | error_setg(errp, "invalid syntax for ethernet address"); | |
9d946191 | 1569 | goto out; |
78cd6f7b TH |
1570 | } |
1571 | if (is_multicast_ether_addr(ni->macaddr.a)) { | |
1572 | error_setg(errp, "NIC cannot have multicast MAC address"); | |
9d946191 TH |
1573 | ret = -1; |
1574 | goto out; | |
78cd6f7b TH |
1575 | } |
1576 | } | |
1577 | qemu_macaddr_default_if_unset(&ni->macaddr); | |
1578 | ||
1579 | ret = net_client_init(opts, true, errp); | |
1580 | if (ret == 0) { | |
1581 | ni->netdev = qemu_find_netdev(nd_id); | |
1582 | ni->used = true; | |
1583 | nb_nics++; | |
1584 | } | |
1585 | ||
9d946191 | 1586 | out: |
78cd6f7b | 1587 | g_free(nd_id); |
4559a1db | 1588 | return ret; |
dc1c9fe8 MM |
1589 | } |
1590 | ||
34f708b0 | 1591 | int net_init_clients(Error **errp) |
dc1c9fe8 | 1592 | { |
ca77d85e MT |
1593 | net_change_state_entry = |
1594 | qemu_add_vm_change_state_handler(net_vm_change_state_handler, NULL); | |
1595 | ||
94878994 | 1596 | QTAILQ_INIT(&net_clients); |
5610c3aa | 1597 | |
28d0de7a | 1598 | if (qemu_opts_foreach(qemu_find_opts("netdev"), |
34f708b0 | 1599 | net_init_netdev, NULL, errp)) { |
f6b134ac | 1600 | return -1; |
a4c7367f | 1601 | } |
f6b134ac | 1602 | |
78cd6f7b TH |
1603 | if (qemu_opts_foreach(qemu_find_opts("nic"), net_param_nic, NULL, errp)) { |
1604 | return -1; | |
1605 | } | |
1606 | ||
34f708b0 | 1607 | if (qemu_opts_foreach(qemu_find_opts("net"), net_init_client, NULL, errp)) { |
dc1c9fe8 MM |
1608 | return -1; |
1609 | } | |
1610 | ||
dc1c9fe8 MM |
1611 | return 0; |
1612 | } | |
1613 | ||
7f161aae | 1614 | int net_client_parse(QemuOptsList *opts_list, const char *optarg) |
dc1c9fe8 | 1615 | { |
70b94331 | 1616 | if (!qemu_opts_parse_noisily(opts_list, optarg, true)) { |
dc1c9fe8 MM |
1617 | return -1; |
1618 | } | |
1619 | ||
1620 | return 0; | |
1621 | } | |
7fc8d918 JW |
1622 | |
1623 | /* From FreeBSD */ | |
1624 | /* XXX: optimize */ | |
eaba8f34 | 1625 | uint32_t net_crc32(const uint8_t *p, int len) |
7fc8d918 JW |
1626 | { |
1627 | uint32_t crc; | |
1628 | int carry, i, j; | |
1629 | uint8_t b; | |
1630 | ||
1631 | crc = 0xffffffff; | |
eaba8f34 MCA |
1632 | for (i = 0; i < len; i++) { |
1633 | b = *p++; | |
7fc8d918 JW |
1634 | for (j = 0; j < 8; j++) { |
1635 | carry = ((crc & 0x80000000L) ? 1 : 0) ^ (b & 0x01); | |
1636 | crc <<= 1; | |
1637 | b >>= 1; | |
1638 | if (carry) { | |
eaba8f34 | 1639 | crc = ((crc ^ POLYNOMIAL_BE) | carry); |
7fc8d918 JW |
1640 | } |
1641 | } | |
1642 | } | |
eaba8f34 MCA |
1643 | |
1644 | return crc; | |
1645 | } | |
1646 | ||
f1a7deb9 MCA |
1647 | uint32_t net_crc32_le(const uint8_t *p, int len) |
1648 | { | |
1649 | uint32_t crc; | |
1650 | int carry, i, j; | |
1651 | uint8_t b; | |
1652 | ||
1653 | crc = 0xffffffff; | |
1654 | for (i = 0; i < len; i++) { | |
1655 | b = *p++; | |
1656 | for (j = 0; j < 8; j++) { | |
1657 | carry = (crc & 0x1) ^ (b & 0x01); | |
1658 | crc >>= 1; | |
1659 | b >>= 1; | |
1660 | if (carry) { | |
1661 | crc ^= POLYNOMIAL_LE; | |
1662 | } | |
1663 | } | |
1664 | } | |
1665 | ||
1666 | return crc; | |
1667 | } | |
1668 | ||
4d454574 PB |
1669 | QemuOptsList qemu_netdev_opts = { |
1670 | .name = "netdev", | |
1671 | .implied_opt_name = "type", | |
1672 | .head = QTAILQ_HEAD_INITIALIZER(qemu_netdev_opts.head), | |
78cd6f7b TH |
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_nic_opts = { | |
1683 | .name = "nic", | |
1684 | .implied_opt_name = "type", | |
1685 | .head = QTAILQ_HEAD_INITIALIZER(qemu_nic_opts.head), | |
4d454574 PB |
1686 | .desc = { |
1687 | /* | |
1688 | * no elements => accept any params | |
1689 | * validation will happen later | |
1690 | */ | |
1691 | { /* end of list */ } | |
1692 | }, | |
1693 | }; | |
1694 | ||
1695 | QemuOptsList qemu_net_opts = { | |
1696 | .name = "net", | |
1697 | .implied_opt_name = "type", | |
1698 | .head = QTAILQ_HEAD_INITIALIZER(qemu_net_opts.head), | |
1699 | .desc = { | |
1700 | /* | |
1701 | * no elements => accept any params | |
1702 | * validation will happen later | |
1703 | */ | |
1704 | { /* end of list */ } | |
1705 | }, | |
1706 | }; | |
16a3df40 ZC |
1707 | |
1708 | void net_socket_rs_init(SocketReadState *rs, | |
3cde5ea2 ZC |
1709 | SocketReadStateFinalize *finalize, |
1710 | bool vnet_hdr) | |
16a3df40 ZC |
1711 | { |
1712 | rs->state = 0; | |
3cde5ea2 | 1713 | rs->vnet_hdr = vnet_hdr; |
16a3df40 ZC |
1714 | rs->index = 0; |
1715 | rs->packet_len = 0; | |
3cde5ea2 | 1716 | rs->vnet_hdr_len = 0; |
16a3df40 ZC |
1717 | memset(rs->buf, 0, sizeof(rs->buf)); |
1718 | rs->finalize = finalize; | |
1719 | } | |
1720 | ||
1721 | /* | |
1722 | * Returns | |
e9e0a585 ZC |
1723 | * 0: success |
1724 | * -1: error occurs | |
16a3df40 ZC |
1725 | */ |
1726 | int net_fill_rstate(SocketReadState *rs, const uint8_t *buf, int size) | |
1727 | { | |
1728 | unsigned int l; | |
1729 | ||
1730 | while (size > 0) { | |
3cde5ea2 ZC |
1731 | /* Reassemble a packet from the network. |
1732 | * 0 = getting length. | |
1733 | * 1 = getting vnet header length. | |
1734 | * 2 = getting data. | |
1735 | */ | |
1736 | switch (rs->state) { | |
16a3df40 ZC |
1737 | case 0: |
1738 | l = 4 - rs->index; | |
1739 | if (l > size) { | |
1740 | l = size; | |
1741 | } | |
1742 | memcpy(rs->buf + rs->index, buf, l); | |
1743 | buf += l; | |
1744 | size -= l; | |
1745 | rs->index += l; | |
1746 | if (rs->index == 4) { | |
1747 | /* got length */ | |
1748 | rs->packet_len = ntohl(*(uint32_t *)rs->buf); | |
1749 | rs->index = 0; | |
3cde5ea2 ZC |
1750 | if (rs->vnet_hdr) { |
1751 | rs->state = 1; | |
1752 | } else { | |
1753 | rs->state = 2; | |
1754 | rs->vnet_hdr_len = 0; | |
1755 | } | |
16a3df40 ZC |
1756 | } |
1757 | break; | |
1758 | case 1: | |
3cde5ea2 ZC |
1759 | l = 4 - rs->index; |
1760 | if (l > size) { | |
1761 | l = size; | |
1762 | } | |
1763 | memcpy(rs->buf + rs->index, buf, l); | |
1764 | buf += l; | |
1765 | size -= l; | |
1766 | rs->index += l; | |
1767 | if (rs->index == 4) { | |
1768 | /* got vnet header length */ | |
1769 | rs->vnet_hdr_len = ntohl(*(uint32_t *)rs->buf); | |
1770 | rs->index = 0; | |
1771 | rs->state = 2; | |
1772 | } | |
1773 | break; | |
1774 | case 2: | |
16a3df40 ZC |
1775 | l = rs->packet_len - rs->index; |
1776 | if (l > size) { | |
1777 | l = size; | |
1778 | } | |
1779 | if (rs->index + l <= sizeof(rs->buf)) { | |
1780 | memcpy(rs->buf + rs->index, buf, l); | |
1781 | } else { | |
1782 | fprintf(stderr, "serious error: oversized packet received," | |
1783 | "connection terminated.\n"); | |
1784 | rs->index = rs->state = 0; | |
1785 | return -1; | |
1786 | } | |
1787 | ||
1788 | rs->index += l; | |
1789 | buf += l; | |
1790 | size -= l; | |
1791 | if (rs->index >= rs->packet_len) { | |
1792 | rs->index = 0; | |
1793 | rs->state = 0; | |
e79cd406 DB |
1794 | assert(rs->finalize); |
1795 | rs->finalize(rs); | |
16a3df40 ZC |
1796 | } |
1797 | break; | |
1798 | } | |
1799 | } | |
e9e0a585 ZC |
1800 | |
1801 | assert(size == 0); | |
16a3df40 ZC |
1802 | return 0; |
1803 | } |