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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" |
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" |
511d2b14 | 58 | |
2944e4ec SW |
59 | /* Net bridge is currently not supported for W32. */ |
60 | #if !defined(_WIN32) | |
61 | # define CONFIG_NET_BRIDGE | |
62 | #endif | |
63 | ||
ca77d85e | 64 | static VMChangeStateEntry *net_change_state_entry; |
4e68f7a0 | 65 | static QTAILQ_HEAD(, NetClientState) net_clients; |
63a01ef8 AL |
66 | |
67 | /***********************************************************/ | |
68 | /* network device redirectors */ | |
69 | ||
bcd4dfd6 MZ |
70 | int parse_host_port(struct sockaddr_in *saddr, const char *str, |
71 | Error **errp) | |
63a01ef8 | 72 | { |
add99347 | 73 | gchar **substrings; |
63a01ef8 | 74 | struct hostent *he; |
add99347 SG |
75 | const char *addr, *p, *r; |
76 | int port, ret = 0; | |
63a01ef8 | 77 | |
add99347 SG |
78 | substrings = g_strsplit(str, ":", 2); |
79 | if (!substrings || !substrings[0] || !substrings[1]) { | |
bcd4dfd6 MZ |
80 | error_setg(errp, "host address '%s' doesn't contain ':' " |
81 | "separating host from port", str); | |
add99347 SG |
82 | ret = -1; |
83 | goto out; | |
bcd4dfd6 | 84 | } |
add99347 SG |
85 | |
86 | addr = substrings[0]; | |
87 | p = substrings[1]; | |
88 | ||
63a01ef8 | 89 | saddr->sin_family = AF_INET; |
add99347 | 90 | if (addr[0] == '\0') { |
63a01ef8 AL |
91 | saddr->sin_addr.s_addr = 0; |
92 | } else { | |
add99347 SG |
93 | if (qemu_isdigit(addr[0])) { |
94 | if (!inet_aton(addr, &saddr->sin_addr)) { | |
bcd4dfd6 | 95 | error_setg(errp, "host address '%s' is not a valid " |
add99347 SG |
96 | "IPv4 address", addr); |
97 | ret = -1; | |
98 | goto out; | |
bcd4dfd6 | 99 | } |
63a01ef8 | 100 | } else { |
add99347 | 101 | he = gethostbyname(addr); |
bcd4dfd6 | 102 | if (he == NULL) { |
add99347 SG |
103 | error_setg(errp, "can't resolve host address '%s'", addr); |
104 | ret = -1; | |
105 | goto out; | |
bcd4dfd6 | 106 | } |
63a01ef8 AL |
107 | saddr->sin_addr = *(struct in_addr *)he->h_addr; |
108 | } | |
109 | } | |
110 | port = strtol(p, (char **)&r, 0); | |
bcd4dfd6 MZ |
111 | if (r == p) { |
112 | error_setg(errp, "port number '%s' is invalid", p); | |
add99347 SG |
113 | ret = -1; |
114 | goto out; | |
bcd4dfd6 | 115 | } |
63a01ef8 | 116 | saddr->sin_port = htons(port); |
add99347 SG |
117 | |
118 | out: | |
119 | g_strfreev(substrings); | |
120 | return ret; | |
63a01ef8 AL |
121 | } |
122 | ||
890ee6ab SF |
123 | char *qemu_mac_strdup_printf(const uint8_t *macaddr) |
124 | { | |
125 | return g_strdup_printf("%.2x:%.2x:%.2x:%.2x:%.2x:%.2x", | |
126 | macaddr[0], macaddr[1], macaddr[2], | |
127 | macaddr[3], macaddr[4], macaddr[5]); | |
128 | } | |
129 | ||
35277d14 | 130 | void qemu_format_nic_info_str(NetClientState *nc, uint8_t macaddr[6]) |
7cb7434b | 131 | { |
59b5437e AK |
132 | g_free(nc->info_str); |
133 | nc->info_str = g_strdup_printf( | |
134 | "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x", | |
135 | nc->model, | |
136 | macaddr[0], macaddr[1], macaddr[2], | |
137 | macaddr[3], macaddr[4], macaddr[5]); | |
7cb7434b AL |
138 | } |
139 | ||
2bc22a58 SZ |
140 | static int mac_table[256] = {0}; |
141 | ||
142 | static void qemu_macaddr_set_used(MACAddr *macaddr) | |
143 | { | |
144 | int index; | |
145 | ||
146 | for (index = 0x56; index < 0xFF; index++) { | |
147 | if (macaddr->a[5] == index) { | |
148 | mac_table[index]++; | |
149 | } | |
150 | } | |
151 | } | |
152 | ||
153 | static void qemu_macaddr_set_free(MACAddr *macaddr) | |
154 | { | |
155 | int index; | |
156 | static const MACAddr base = { .a = { 0x52, 0x54, 0x00, 0x12, 0x34, 0 } }; | |
157 | ||
158 | if (memcmp(macaddr->a, &base.a, (sizeof(base.a) - 1)) != 0) { | |
159 | return; | |
160 | } | |
161 | for (index = 0x56; index < 0xFF; index++) { | |
162 | if (macaddr->a[5] == index) { | |
163 | mac_table[index]--; | |
164 | } | |
165 | } | |
166 | } | |
167 | ||
168 | static int qemu_macaddr_get_free(void) | |
169 | { | |
170 | int index; | |
171 | ||
172 | for (index = 0x56; index < 0xFF; index++) { | |
173 | if (mac_table[index] == 0) { | |
174 | return index; | |
175 | } | |
176 | } | |
177 | ||
178 | return -1; | |
179 | } | |
180 | ||
76d32cba GH |
181 | void qemu_macaddr_default_if_unset(MACAddr *macaddr) |
182 | { | |
76d32cba | 183 | static const MACAddr zero = { .a = { 0,0,0,0,0,0 } }; |
2bc22a58 SZ |
184 | static const MACAddr base = { .a = { 0x52, 0x54, 0x00, 0x12, 0x34, 0 } }; |
185 | ||
186 | if (memcmp(macaddr, &zero, sizeof(zero)) != 0) { | |
187 | if (memcmp(macaddr->a, &base.a, (sizeof(base.a) - 1)) != 0) { | |
188 | return; | |
189 | } else { | |
190 | qemu_macaddr_set_used(macaddr); | |
191 | return; | |
192 | } | |
193 | } | |
76d32cba | 194 | |
76d32cba GH |
195 | macaddr->a[0] = 0x52; |
196 | macaddr->a[1] = 0x54; | |
197 | macaddr->a[2] = 0x00; | |
198 | macaddr->a[3] = 0x12; | |
199 | macaddr->a[4] = 0x34; | |
2bc22a58 SZ |
200 | macaddr->a[5] = qemu_macaddr_get_free(); |
201 | qemu_macaddr_set_used(macaddr); | |
76d32cba GH |
202 | } |
203 | ||
d33d93b2 SH |
204 | /** |
205 | * Generate a name for net client | |
206 | * | |
c963530a | 207 | * Only net clients created with the legacy -net option and NICs need this. |
d33d93b2 | 208 | */ |
35277d14 | 209 | static char *assign_name(NetClientState *nc1, const char *model) |
676cff29 | 210 | { |
35277d14 | 211 | NetClientState *nc; |
676cff29 AL |
212 | int id = 0; |
213 | ||
35277d14 SH |
214 | QTAILQ_FOREACH(nc, &net_clients, next) { |
215 | if (nc == nc1) { | |
d33d93b2 | 216 | continue; |
5610c3aa | 217 | } |
c963530a | 218 | if (strcmp(nc->model, model) == 0) { |
53e51d85 MA |
219 | id++; |
220 | } | |
221 | } | |
222 | ||
4bf2c138 | 223 | return g_strdup_printf("%s.%d", model, id); |
676cff29 AL |
224 | } |
225 | ||
f7860455 JW |
226 | static void qemu_net_client_destructor(NetClientState *nc) |
227 | { | |
228 | g_free(nc); | |
229 | } | |
25c01bd1 JW |
230 | static ssize_t qemu_deliver_packet_iov(NetClientState *sender, |
231 | unsigned flags, | |
232 | const struct iovec *iov, | |
233 | int iovcnt, | |
234 | void *opaque); | |
f7860455 | 235 | |
18a1541a JW |
236 | static void qemu_net_client_setup(NetClientState *nc, |
237 | NetClientInfo *info, | |
238 | NetClientState *peer, | |
239 | const char *model, | |
f7860455 JW |
240 | const char *name, |
241 | NetClientDestructor *destructor) | |
63a01ef8 | 242 | { |
35277d14 SH |
243 | nc->info = info; |
244 | nc->model = g_strdup(model); | |
45460d1a | 245 | if (name) { |
35277d14 | 246 | nc->name = g_strdup(name); |
45460d1a | 247 | } else { |
35277d14 | 248 | nc->name = assign_name(nc, model); |
45460d1a | 249 | } |
5610c3aa | 250 | |
ab5f3f84 SH |
251 | if (peer) { |
252 | assert(!peer->peer); | |
35277d14 SH |
253 | nc->peer = peer; |
254 | peer->peer = nc; | |
d80b9fc6 | 255 | } |
35277d14 | 256 | QTAILQ_INSERT_TAIL(&net_clients, nc, next); |
63a01ef8 | 257 | |
3e033a46 | 258 | nc->incoming_queue = qemu_new_net_queue(qemu_deliver_packet_iov, nc); |
f7860455 | 259 | nc->destructor = destructor; |
fdccce45 | 260 | QTAILQ_INIT(&nc->filters); |
18a1541a JW |
261 | } |
262 | ||
263 | NetClientState *qemu_new_net_client(NetClientInfo *info, | |
264 | NetClientState *peer, | |
265 | const char *model, | |
266 | const char *name) | |
267 | { | |
268 | NetClientState *nc; | |
269 | ||
270 | assert(info->size >= sizeof(NetClientState)); | |
271 | ||
272 | nc = g_malloc0(info->size); | |
f7860455 JW |
273 | qemu_net_client_setup(nc, info, peer, model, name, |
274 | qemu_net_client_destructor); | |
18a1541a | 275 | |
35277d14 | 276 | return nc; |
63a01ef8 AL |
277 | } |
278 | ||
ebef2c09 MM |
279 | NICState *qemu_new_nic(NetClientInfo *info, |
280 | NICConf *conf, | |
281 | const char *model, | |
282 | const char *name, | |
283 | void *opaque) | |
284 | { | |
1ceef9f2 | 285 | NetClientState **peers = conf->peers.ncs; |
ebef2c09 | 286 | NICState *nic; |
575a1c0e | 287 | int i, queues = MAX(1, conf->peers.queues); |
ebef2c09 | 288 | |
f394b2e2 | 289 | assert(info->type == NET_CLIENT_DRIVER_NIC); |
ebef2c09 MM |
290 | assert(info->size >= sizeof(NICState)); |
291 | ||
f6b26cf2 JW |
292 | nic = g_malloc0(info->size + sizeof(NetClientState) * queues); |
293 | nic->ncs = (void *)nic + info->size; | |
ebef2c09 MM |
294 | nic->conf = conf; |
295 | nic->opaque = opaque; | |
296 | ||
f6b26cf2 JW |
297 | for (i = 0; i < queues; i++) { |
298 | qemu_net_client_setup(&nic->ncs[i], info, peers[i], model, name, | |
1ceef9f2 JW |
299 | NULL); |
300 | nic->ncs[i].queue_index = i; | |
301 | } | |
302 | ||
ebef2c09 MM |
303 | return nic; |
304 | } | |
305 | ||
1ceef9f2 JW |
306 | NetClientState *qemu_get_subqueue(NICState *nic, int queue_index) |
307 | { | |
f6b26cf2 | 308 | return nic->ncs + queue_index; |
1ceef9f2 JW |
309 | } |
310 | ||
b356f76d JW |
311 | NetClientState *qemu_get_queue(NICState *nic) |
312 | { | |
1ceef9f2 | 313 | return qemu_get_subqueue(nic, 0); |
b356f76d JW |
314 | } |
315 | ||
cc1f0f45 JW |
316 | NICState *qemu_get_nic(NetClientState *nc) |
317 | { | |
1ceef9f2 JW |
318 | NetClientState *nc0 = nc - nc->queue_index; |
319 | ||
f6b26cf2 | 320 | return (NICState *)((void *)nc0 - nc->info->size); |
cc1f0f45 JW |
321 | } |
322 | ||
323 | void *qemu_get_nic_opaque(NetClientState *nc) | |
324 | { | |
325 | NICState *nic = qemu_get_nic(nc); | |
326 | ||
327 | return nic->opaque; | |
328 | } | |
329 | ||
0165daae CL |
330 | NetClientState *qemu_get_peer(NetClientState *nc, int queue_index) |
331 | { | |
332 | assert(nc != NULL); | |
333 | NetClientState *ncs = nc + queue_index; | |
334 | return ncs->peer; | |
335 | } | |
336 | ||
b20c6b9e | 337 | static void qemu_cleanup_net_client(NetClientState *nc) |
63a01ef8 | 338 | { |
35277d14 | 339 | QTAILQ_REMOVE(&net_clients, nc, next); |
63a01ef8 | 340 | |
cc2a9043 AF |
341 | if (nc->info->cleanup) { |
342 | nc->info->cleanup(nc); | |
343 | } | |
a083a89d | 344 | } |
5610c3aa | 345 | |
b20c6b9e | 346 | static void qemu_free_net_client(NetClientState *nc) |
a083a89d | 347 | { |
067404be JK |
348 | if (nc->incoming_queue) { |
349 | qemu_del_net_queue(nc->incoming_queue); | |
a005d073 | 350 | } |
35277d14 SH |
351 | if (nc->peer) { |
352 | nc->peer->peer = NULL; | |
a083a89d | 353 | } |
35277d14 SH |
354 | g_free(nc->name); |
355 | g_free(nc->model); | |
59b5437e | 356 | g_free(nc->info_str); |
d32ad10a | 357 | qapi_free_NetdevInfo(nc->stored_config); |
f7860455 JW |
358 | if (nc->destructor) { |
359 | nc->destructor(nc); | |
360 | } | |
63a01ef8 AL |
361 | } |
362 | ||
b20c6b9e | 363 | void qemu_del_net_client(NetClientState *nc) |
a083a89d | 364 | { |
1ceef9f2 JW |
365 | NetClientState *ncs[MAX_QUEUE_NUM]; |
366 | int queues, i; | |
fdccce45 | 367 | NetFilterState *nf, *next; |
1ceef9f2 | 368 | |
f394b2e2 | 369 | assert(nc->info->type != NET_CLIENT_DRIVER_NIC); |
7fb43911 | 370 | |
1ceef9f2 JW |
371 | /* If the NetClientState belongs to a multiqueue backend, we will change all |
372 | * other NetClientStates also. | |
373 | */ | |
374 | queues = qemu_find_net_clients_except(nc->name, ncs, | |
f394b2e2 | 375 | NET_CLIENT_DRIVER_NIC, |
1ceef9f2 JW |
376 | MAX_QUEUE_NUM); |
377 | assert(queues != 0); | |
378 | ||
fdccce45 YH |
379 | QTAILQ_FOREACH_SAFE(nf, &nc->filters, next, next) { |
380 | object_unparent(OBJECT(nf)); | |
381 | } | |
382 | ||
a083a89d | 383 | /* If there is a peer NIC, delete and cleanup client, but do not free. */ |
f394b2e2 | 384 | if (nc->peer && nc->peer->info->type == NET_CLIENT_DRIVER_NIC) { |
cc1f0f45 | 385 | NICState *nic = qemu_get_nic(nc->peer); |
a083a89d MT |
386 | if (nic->peer_deleted) { |
387 | return; | |
388 | } | |
389 | nic->peer_deleted = true; | |
1ceef9f2 JW |
390 | |
391 | for (i = 0; i < queues; i++) { | |
392 | ncs[i]->peer->link_down = true; | |
393 | } | |
394 | ||
35277d14 SH |
395 | if (nc->peer->info->link_status_changed) { |
396 | nc->peer->info->link_status_changed(nc->peer); | |
a083a89d | 397 | } |
1ceef9f2 JW |
398 | |
399 | for (i = 0; i < queues; i++) { | |
400 | qemu_cleanup_net_client(ncs[i]); | |
401 | } | |
402 | ||
a083a89d MT |
403 | return; |
404 | } | |
405 | ||
1ceef9f2 JW |
406 | for (i = 0; i < queues; i++) { |
407 | qemu_cleanup_net_client(ncs[i]); | |
408 | qemu_free_net_client(ncs[i]); | |
409 | } | |
948ecf21 JW |
410 | } |
411 | ||
412 | void qemu_del_nic(NICState *nic) | |
413 | { | |
575a1c0e | 414 | int i, queues = MAX(nic->conf->peers.queues, 1); |
1ceef9f2 | 415 | |
2bc22a58 SZ |
416 | qemu_macaddr_set_free(&nic->conf->macaddr); |
417 | ||
d2abc563 YB |
418 | for (i = 0; i < queues; i++) { |
419 | NetClientState *nc = qemu_get_subqueue(nic, i); | |
420 | /* If this is a peer NIC and peer has already been deleted, free it now. */ | |
421 | if (nic->peer_deleted) { | |
422 | qemu_free_net_client(nc->peer); | |
423 | } else if (nc->peer) { | |
424 | /* if there are RX packets pending, complete them */ | |
425 | qemu_purge_queued_packets(nc->peer); | |
1a609520 JK |
426 | } |
427 | } | |
1a609520 | 428 | |
1ceef9f2 JW |
429 | for (i = queues - 1; i >= 0; i--) { |
430 | NetClientState *nc = qemu_get_subqueue(nic, i); | |
431 | ||
432 | qemu_cleanup_net_client(nc); | |
433 | qemu_free_net_client(nc); | |
434 | } | |
f6b26cf2 JW |
435 | |
436 | g_free(nic); | |
1a609520 JK |
437 | } |
438 | ||
57f9ef17 MM |
439 | void qemu_foreach_nic(qemu_nic_foreach func, void *opaque) |
440 | { | |
4e68f7a0 | 441 | NetClientState *nc; |
57f9ef17 | 442 | |
94878994 | 443 | QTAILQ_FOREACH(nc, &net_clients, next) { |
f394b2e2 | 444 | if (nc->info->type == NET_CLIENT_DRIVER_NIC) { |
1ceef9f2 JW |
445 | if (nc->queue_index == 0) { |
446 | func(qemu_get_nic(nc), opaque); | |
447 | } | |
57f9ef17 MM |
448 | } |
449 | } | |
57f9ef17 MM |
450 | } |
451 | ||
d6085e3a | 452 | bool qemu_has_ufo(NetClientState *nc) |
1f55ac45 | 453 | { |
d6085e3a | 454 | if (!nc || !nc->info->has_ufo) { |
1f55ac45 VM |
455 | return false; |
456 | } | |
457 | ||
d6085e3a | 458 | return nc->info->has_ufo(nc); |
1f55ac45 VM |
459 | } |
460 | ||
d6085e3a | 461 | bool qemu_has_vnet_hdr(NetClientState *nc) |
1f55ac45 | 462 | { |
d6085e3a | 463 | if (!nc || !nc->info->has_vnet_hdr) { |
1f55ac45 VM |
464 | return false; |
465 | } | |
466 | ||
d6085e3a | 467 | return nc->info->has_vnet_hdr(nc); |
1f55ac45 VM |
468 | } |
469 | ||
d6085e3a | 470 | bool qemu_has_vnet_hdr_len(NetClientState *nc, int len) |
1f55ac45 | 471 | { |
d6085e3a | 472 | if (!nc || !nc->info->has_vnet_hdr_len) { |
1f55ac45 VM |
473 | return false; |
474 | } | |
475 | ||
d6085e3a | 476 | return nc->info->has_vnet_hdr_len(nc, len); |
1f55ac45 VM |
477 | } |
478 | ||
d6085e3a | 479 | void qemu_using_vnet_hdr(NetClientState *nc, bool enable) |
1f55ac45 | 480 | { |
d6085e3a | 481 | if (!nc || !nc->info->using_vnet_hdr) { |
1f55ac45 VM |
482 | return; |
483 | } | |
484 | ||
d6085e3a | 485 | nc->info->using_vnet_hdr(nc, enable); |
1f55ac45 VM |
486 | } |
487 | ||
d6085e3a | 488 | void qemu_set_offload(NetClientState *nc, int csum, int tso4, int tso6, |
1f55ac45 VM |
489 | int ecn, int ufo) |
490 | { | |
d6085e3a | 491 | if (!nc || !nc->info->set_offload) { |
1f55ac45 VM |
492 | return; |
493 | } | |
494 | ||
d6085e3a | 495 | nc->info->set_offload(nc, csum, tso4, tso6, ecn, ufo); |
1f55ac45 VM |
496 | } |
497 | ||
d6085e3a | 498 | void qemu_set_vnet_hdr_len(NetClientState *nc, int len) |
1f55ac45 | 499 | { |
d6085e3a | 500 | if (!nc || !nc->info->set_vnet_hdr_len) { |
1f55ac45 VM |
501 | return; |
502 | } | |
503 | ||
d6b732e9 | 504 | nc->vnet_hdr_len = len; |
d6085e3a | 505 | nc->info->set_vnet_hdr_len(nc, len); |
1f55ac45 VM |
506 | } |
507 | ||
c80cd6bb GK |
508 | int qemu_set_vnet_le(NetClientState *nc, bool is_le) |
509 | { | |
052bd52f | 510 | #ifdef HOST_WORDS_BIGENDIAN |
c80cd6bb GK |
511 | if (!nc || !nc->info->set_vnet_le) { |
512 | return -ENOSYS; | |
513 | } | |
514 | ||
515 | return nc->info->set_vnet_le(nc, is_le); | |
052bd52f MT |
516 | #else |
517 | return 0; | |
518 | #endif | |
c80cd6bb GK |
519 | } |
520 | ||
521 | int qemu_set_vnet_be(NetClientState *nc, bool is_be) | |
522 | { | |
052bd52f MT |
523 | #ifdef HOST_WORDS_BIGENDIAN |
524 | return 0; | |
525 | #else | |
c80cd6bb GK |
526 | if (!nc || !nc->info->set_vnet_be) { |
527 | return -ENOSYS; | |
528 | } | |
529 | ||
530 | return nc->info->set_vnet_be(nc, is_be); | |
052bd52f | 531 | #endif |
c80cd6bb GK |
532 | } |
533 | ||
705df546 JW |
534 | int qemu_can_receive_packet(NetClientState *nc) |
535 | { | |
536 | if (nc->receive_disabled) { | |
537 | return 0; | |
538 | } else if (nc->info->can_receive && | |
539 | !nc->info->can_receive(nc)) { | |
540 | return 0; | |
541 | } | |
542 | return 1; | |
543 | } | |
544 | ||
4e68f7a0 | 545 | int qemu_can_send_packet(NetClientState *sender) |
63a01ef8 | 546 | { |
e1d64c08 HZ |
547 | int vm_running = runstate_is_running(); |
548 | ||
549 | if (!vm_running) { | |
550 | return 0; | |
551 | } | |
552 | ||
a005d073 | 553 | if (!sender->peer) { |
d80b9fc6 MM |
554 | return 1; |
555 | } | |
556 | ||
705df546 | 557 | return qemu_can_receive_packet(sender->peer); |
63a01ef8 AL |
558 | } |
559 | ||
e64c770d YH |
560 | static ssize_t filter_receive_iov(NetClientState *nc, |
561 | NetFilterDirection direction, | |
562 | NetClientState *sender, | |
563 | unsigned flags, | |
564 | const struct iovec *iov, | |
565 | int iovcnt, | |
566 | NetPacketSent *sent_cb) | |
567 | { | |
568 | ssize_t ret = 0; | |
569 | NetFilterState *nf = NULL; | |
570 | ||
25aaadf0 LZ |
571 | if (direction == NET_FILTER_DIRECTION_TX) { |
572 | QTAILQ_FOREACH(nf, &nc->filters, next) { | |
573 | ret = qemu_netfilter_receive(nf, direction, sender, flags, iov, | |
574 | iovcnt, sent_cb); | |
575 | if (ret) { | |
576 | return ret; | |
577 | } | |
578 | } | |
579 | } else { | |
eae3eb3e | 580 | QTAILQ_FOREACH_REVERSE(nf, &nc->filters, next) { |
25aaadf0 LZ |
581 | ret = qemu_netfilter_receive(nf, direction, sender, flags, iov, |
582 | iovcnt, sent_cb); | |
583 | if (ret) { | |
584 | return ret; | |
585 | } | |
e64c770d YH |
586 | } |
587 | } | |
588 | ||
589 | return ret; | |
590 | } | |
591 | ||
592 | static ssize_t filter_receive(NetClientState *nc, | |
593 | NetFilterDirection direction, | |
594 | NetClientState *sender, | |
595 | unsigned flags, | |
596 | const uint8_t *data, | |
597 | size_t size, | |
598 | NetPacketSent *sent_cb) | |
599 | { | |
600 | struct iovec iov = { | |
601 | .iov_base = (void *)data, | |
602 | .iov_len = size | |
603 | }; | |
604 | ||
605 | return filter_receive_iov(nc, direction, sender, flags, &iov, 1, sent_cb); | |
606 | } | |
607 | ||
35277d14 | 608 | void qemu_purge_queued_packets(NetClientState *nc) |
8cad5516 | 609 | { |
35277d14 | 610 | if (!nc->peer) { |
d80b9fc6 | 611 | return; |
9a6ecb30 | 612 | } |
d80b9fc6 | 613 | |
067404be | 614 | qemu_net_queue_purge(nc->peer->incoming_queue, nc); |
8cad5516 MM |
615 | } |
616 | ||
ca77d85e | 617 | void qemu_flush_or_purge_queued_packets(NetClientState *nc, bool purge) |
e94667b9 | 618 | { |
35277d14 | 619 | nc->receive_disabled = 0; |
9a6ecb30 | 620 | |
f394b2e2 | 621 | if (nc->peer && nc->peer->info->type == NET_CLIENT_DRIVER_HUBPORT) { |
199ee608 LR |
622 | if (net_hub_flush(nc->peer)) { |
623 | qemu_notify_event(); | |
624 | } | |
199ee608 | 625 | } |
067404be | 626 | if (qemu_net_queue_flush(nc->incoming_queue)) { |
987a9b48 PB |
627 | /* We emptied the queue successfully, signal to the IO thread to repoll |
628 | * the file descriptor (for tap, for example). | |
629 | */ | |
630 | qemu_notify_event(); | |
ca77d85e MT |
631 | } else if (purge) { |
632 | /* Unable to empty the queue, purge remaining packets */ | |
5fe19fb8 | 633 | qemu_net_queue_purge(nc->incoming_queue, nc->peer); |
987a9b48 | 634 | } |
e94667b9 MM |
635 | } |
636 | ||
ca77d85e MT |
637 | void qemu_flush_queued_packets(NetClientState *nc) |
638 | { | |
639 | qemu_flush_or_purge_queued_packets(nc, false); | |
640 | } | |
641 | ||
4e68f7a0 | 642 | static ssize_t qemu_send_packet_async_with_flags(NetClientState *sender, |
ca77d175 MM |
643 | unsigned flags, |
644 | const uint8_t *buf, int size, | |
645 | NetPacketSent *sent_cb) | |
764a4d1d | 646 | { |
9a6ecb30 | 647 | NetQueue *queue; |
e64c770d | 648 | int ret; |
436e5e53 | 649 | |
63a01ef8 | 650 | #ifdef DEBUG_NET |
d80b9fc6 | 651 | printf("qemu_send_packet_async:\n"); |
b42581f5 | 652 | qemu_hexdump(stdout, "net", buf, size); |
63a01ef8 | 653 | #endif |
f3b6c7fc | 654 | |
a005d073 | 655 | if (sender->link_down || !sender->peer) { |
9a6ecb30 MM |
656 | return size; |
657 | } | |
658 | ||
e64c770d YH |
659 | /* Let filters handle the packet first */ |
660 | ret = filter_receive(sender, NET_FILTER_DIRECTION_TX, | |
661 | sender, flags, buf, size, sent_cb); | |
662 | if (ret) { | |
663 | return ret; | |
664 | } | |
665 | ||
666 | ret = filter_receive(sender->peer, NET_FILTER_DIRECTION_RX, | |
667 | sender, flags, buf, size, sent_cb); | |
668 | if (ret) { | |
669 | return ret; | |
670 | } | |
671 | ||
067404be | 672 | queue = sender->peer->incoming_queue; |
9a6ecb30 | 673 | |
ca77d175 MM |
674 | return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb); |
675 | } | |
676 | ||
4e68f7a0 | 677 | ssize_t qemu_send_packet_async(NetClientState *sender, |
ca77d175 MM |
678 | const uint8_t *buf, int size, |
679 | NetPacketSent *sent_cb) | |
680 | { | |
681 | return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE, | |
682 | buf, size, sent_cb); | |
f3b6c7fc MM |
683 | } |
684 | ||
625a526b | 685 | ssize_t qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size) |
f3b6c7fc | 686 | { |
625a526b | 687 | return qemu_send_packet_async(nc, buf, size, NULL); |
63a01ef8 AL |
688 | } |
689 | ||
705df546 JW |
690 | ssize_t qemu_receive_packet(NetClientState *nc, const uint8_t *buf, int size) |
691 | { | |
692 | if (!qemu_can_receive_packet(nc)) { | |
693 | return 0; | |
694 | } | |
695 | ||
696 | return qemu_net_queue_receive(nc->incoming_queue, buf, size); | |
697 | } | |
698 | ||
699 | ssize_t qemu_receive_packet_iov(NetClientState *nc, const struct iovec *iov, | |
700 | int iovcnt) | |
701 | { | |
702 | if (!qemu_can_receive_packet(nc)) { | |
703 | return 0; | |
704 | } | |
705 | ||
706 | return qemu_net_queue_receive_iov(nc->incoming_queue, iov, iovcnt); | |
707 | } | |
708 | ||
35277d14 | 709 | ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size) |
ca77d175 | 710 | { |
35277d14 | 711 | return qemu_send_packet_async_with_flags(nc, QEMU_NET_PACKET_FLAG_RAW, |
ca77d175 MM |
712 | buf, size, NULL); |
713 | } | |
714 | ||
35277d14 | 715 | static ssize_t nc_sendv_compat(NetClientState *nc, const struct iovec *iov, |
fefe2a78 | 716 | int iovcnt, unsigned flags) |
fbe78f4f | 717 | { |
74044c8f | 718 | uint8_t *buf = NULL; |
fefe2a78 | 719 | uint8_t *buffer; |
ce053661 | 720 | size_t offset; |
74044c8f | 721 | ssize_t ret; |
fbe78f4f | 722 | |
fefe2a78 YH |
723 | if (iovcnt == 1) { |
724 | buffer = iov[0].iov_base; | |
725 | offset = iov[0].iov_len; | |
726 | } else { | |
47f9f158 PL |
727 | offset = iov_size(iov, iovcnt); |
728 | if (offset > NET_BUFSIZE) { | |
729 | return -1; | |
730 | } | |
731 | buf = g_malloc(offset); | |
fefe2a78 | 732 | buffer = buf; |
47f9f158 | 733 | offset = iov_to_buf(iov, iovcnt, 0, buf, offset); |
fefe2a78 | 734 | } |
fbe78f4f | 735 | |
fefe2a78 | 736 | if (flags & QEMU_NET_PACKET_FLAG_RAW && nc->info->receive_raw) { |
74044c8f | 737 | ret = nc->info->receive_raw(nc, buffer, offset); |
fefe2a78 | 738 | } else { |
74044c8f | 739 | ret = nc->info->receive(nc, buffer, offset); |
fefe2a78 | 740 | } |
74044c8f PD |
741 | |
742 | g_free(buf); | |
743 | return ret; | |
fbe78f4f AL |
744 | } |
745 | ||
25c01bd1 JW |
746 | static ssize_t qemu_deliver_packet_iov(NetClientState *sender, |
747 | unsigned flags, | |
748 | const struct iovec *iov, | |
749 | int iovcnt, | |
750 | void *opaque) | |
9a6ecb30 | 751 | { |
35277d14 | 752 | NetClientState *nc = opaque; |
c67f5dc1 | 753 | int ret; |
9a6ecb30 | 754 | |
1592a994 | 755 | |
35277d14 | 756 | if (nc->link_down) { |
25c01bd1 | 757 | return iov_size(iov, iovcnt); |
9a6ecb30 MM |
758 | } |
759 | ||
c67f5dc1 SH |
760 | if (nc->receive_disabled) { |
761 | return 0; | |
762 | } | |
763 | ||
ca1ee3d6 | 764 | if (nc->info->receive_iov && !(flags & QEMU_NET_PACKET_FLAG_RAW)) { |
c67f5dc1 | 765 | ret = nc->info->receive_iov(nc, iov, iovcnt); |
9a6ecb30 | 766 | } else { |
fefe2a78 | 767 | ret = nc_sendv_compat(nc, iov, iovcnt, flags); |
c67f5dc1 SH |
768 | } |
769 | ||
770 | if (ret == 0) { | |
771 | nc->receive_disabled = 1; | |
e94667b9 | 772 | } |
c67f5dc1 SH |
773 | |
774 | return ret; | |
e94667b9 MM |
775 | } |
776 | ||
4e68f7a0 | 777 | ssize_t qemu_sendv_packet_async(NetClientState *sender, |
f3b6c7fc MM |
778 | const struct iovec *iov, int iovcnt, |
779 | NetPacketSent *sent_cb) | |
e94667b9 | 780 | { |
9a6ecb30 | 781 | NetQueue *queue; |
25c01bd1 | 782 | size_t size = iov_size(iov, iovcnt); |
e64c770d | 783 | int ret; |
9a6ecb30 | 784 | |
25c01bd1 JW |
785 | if (size > NET_BUFSIZE) { |
786 | return size; | |
787 | } | |
788 | ||
a005d073 | 789 | if (sender->link_down || !sender->peer) { |
25c01bd1 | 790 | return size; |
e94667b9 MM |
791 | } |
792 | ||
e64c770d YH |
793 | /* Let filters handle the packet first */ |
794 | ret = filter_receive_iov(sender, NET_FILTER_DIRECTION_TX, sender, | |
795 | QEMU_NET_PACKET_FLAG_NONE, iov, iovcnt, sent_cb); | |
796 | if (ret) { | |
797 | return ret; | |
798 | } | |
799 | ||
800 | ret = filter_receive_iov(sender->peer, NET_FILTER_DIRECTION_RX, sender, | |
801 | QEMU_NET_PACKET_FLAG_NONE, iov, iovcnt, sent_cb); | |
802 | if (ret) { | |
803 | return ret; | |
804 | } | |
805 | ||
067404be | 806 | queue = sender->peer->incoming_queue; |
9a6ecb30 | 807 | |
c0b8e49c MM |
808 | return qemu_net_queue_send_iov(queue, sender, |
809 | QEMU_NET_PACKET_FLAG_NONE, | |
810 | iov, iovcnt, sent_cb); | |
fbe78f4f AL |
811 | } |
812 | ||
f3b6c7fc | 813 | ssize_t |
35277d14 | 814 | qemu_sendv_packet(NetClientState *nc, const struct iovec *iov, int iovcnt) |
f3b6c7fc | 815 | { |
35277d14 | 816 | return qemu_sendv_packet_async(nc, iov, iovcnt, NULL); |
63a01ef8 AL |
817 | } |
818 | ||
4e68f7a0 | 819 | NetClientState *qemu_find_netdev(const char *id) |
5869c4d5 | 820 | { |
35277d14 | 821 | NetClientState *nc; |
5869c4d5 | 822 | |
35277d14 | 823 | QTAILQ_FOREACH(nc, &net_clients, next) { |
f394b2e2 | 824 | if (nc->info->type == NET_CLIENT_DRIVER_NIC) |
85dde9a9 | 825 | continue; |
35277d14 SH |
826 | if (!strcmp(nc->name, id)) { |
827 | return nc; | |
5869c4d5 MM |
828 | } |
829 | } | |
830 | ||
831 | return NULL; | |
832 | } | |
833 | ||
6c51ae73 | 834 | int qemu_find_net_clients_except(const char *id, NetClientState **ncs, |
f394b2e2 | 835 | NetClientDriver type, int max) |
6c51ae73 JW |
836 | { |
837 | NetClientState *nc; | |
838 | int ret = 0; | |
839 | ||
840 | QTAILQ_FOREACH(nc, &net_clients, next) { | |
841 | if (nc->info->type == type) { | |
842 | continue; | |
843 | } | |
40d19394 | 844 | if (!id || !strcmp(nc->name, id)) { |
6c51ae73 JW |
845 | if (ret < max) { |
846 | ncs[ret] = nc; | |
847 | } | |
848 | ret++; | |
849 | } | |
850 | } | |
851 | ||
852 | return ret; | |
853 | } | |
854 | ||
7697079b AL |
855 | static int nic_get_free_idx(void) |
856 | { | |
857 | int index; | |
858 | ||
859 | for (index = 0; index < MAX_NICS; index++) | |
860 | if (!nd_table[index].used) | |
861 | return index; | |
862 | return -1; | |
863 | } | |
864 | ||
07caea31 MA |
865 | int qemu_show_nic_models(const char *arg, const char *const *models) |
866 | { | |
867 | int i; | |
868 | ||
c8057f95 | 869 | if (!arg || !is_help_option(arg)) { |
07caea31 | 870 | return 0; |
c8057f95 | 871 | } |
07caea31 | 872 | |
7b71e03a TH |
873 | printf("Supported NIC models:\n"); |
874 | for (i = 0 ; models[i]; i++) { | |
875 | printf("%s\n", models[i]); | |
876 | } | |
07caea31 MA |
877 | return 1; |
878 | } | |
879 | ||
d07f22c5 AL |
880 | void qemu_check_nic_model(NICInfo *nd, const char *model) |
881 | { | |
882 | const char *models[2]; | |
883 | ||
884 | models[0] = model; | |
885 | models[1] = NULL; | |
886 | ||
07caea31 MA |
887 | if (qemu_show_nic_models(nd->model, models)) |
888 | exit(0); | |
889 | if (qemu_find_nic_model(nd, models, model) < 0) | |
890 | exit(1); | |
d07f22c5 AL |
891 | } |
892 | ||
07caea31 MA |
893 | int qemu_find_nic_model(NICInfo *nd, const char * const *models, |
894 | const char *default_model) | |
d07f22c5 | 895 | { |
07caea31 | 896 | int i; |
d07f22c5 AL |
897 | |
898 | if (!nd->model) | |
7267c094 | 899 | nd->model = g_strdup(default_model); |
d07f22c5 | 900 | |
07caea31 MA |
901 | for (i = 0 ; models[i]; i++) { |
902 | if (strcmp(nd->model, models[i]) == 0) | |
903 | return i; | |
d07f22c5 AL |
904 | } |
905 | ||
6daf194d | 906 | error_report("Unsupported NIC model: %s", nd->model); |
07caea31 | 907 | return -1; |
d07f22c5 AL |
908 | } |
909 | ||
cebea510 | 910 | static int net_init_nic(const Netdev *netdev, const char *name, |
a30ecde6 | 911 | NetClientState *peer, Error **errp) |
f83c6e10 MM |
912 | { |
913 | int idx; | |
914 | NICInfo *nd; | |
2456f36f LE |
915 | const NetLegacyNicOptions *nic; |
916 | ||
f394b2e2 EB |
917 | assert(netdev->type == NET_CLIENT_DRIVER_NIC); |
918 | nic = &netdev->u.nic; | |
f83c6e10 MM |
919 | |
920 | idx = nic_get_free_idx(); | |
921 | if (idx == -1 || nb_nics >= MAX_NICS) { | |
66308868 | 922 | error_setg(errp, "too many NICs"); |
f83c6e10 MM |
923 | return -1; |
924 | } | |
925 | ||
926 | nd = &nd_table[idx]; | |
927 | ||
928 | memset(nd, 0, sizeof(*nd)); | |
929 | ||
2456f36f LE |
930 | if (nic->has_netdev) { |
931 | nd->netdev = qemu_find_netdev(nic->netdev); | |
5869c4d5 | 932 | if (!nd->netdev) { |
66308868 | 933 | error_setg(errp, "netdev '%s' not found", nic->netdev); |
5869c4d5 MM |
934 | return -1; |
935 | } | |
936 | } else { | |
d33d93b2 SH |
937 | assert(peer); |
938 | nd->netdev = peer; | |
5869c4d5 | 939 | } |
c64f50d1 | 940 | nd->name = g_strdup(name); |
2456f36f LE |
941 | if (nic->has_model) { |
942 | nd->model = g_strdup(nic->model); | |
f83c6e10 | 943 | } |
2456f36f LE |
944 | if (nic->has_addr) { |
945 | nd->devaddr = g_strdup(nic->addr); | |
f83c6e10 MM |
946 | } |
947 | ||
2456f36f LE |
948 | if (nic->has_macaddr && |
949 | net_parse_macaddr(nd->macaddr.a, nic->macaddr) < 0) { | |
66308868 | 950 | error_setg(errp, "invalid syntax for ethernet address"); |
f83c6e10 MM |
951 | return -1; |
952 | } | |
d60b20cf DK |
953 | if (nic->has_macaddr && |
954 | is_multicast_ether_addr(nd->macaddr.a)) { | |
66308868 MA |
955 | error_setg(errp, |
956 | "NIC cannot have multicast MAC address (odd 1st byte)"); | |
d60b20cf DK |
957 | return -1; |
958 | } | |
6eed1856 | 959 | qemu_macaddr_default_if_unset(&nd->macaddr); |
f83c6e10 | 960 | |
2456f36f LE |
961 | if (nic->has_vectors) { |
962 | if (nic->vectors > 0x7ffffff) { | |
66308868 | 963 | error_setg(errp, "invalid # of vectors: %"PRIu32, nic->vectors); |
2456f36f LE |
964 | return -1; |
965 | } | |
966 | nd->nvectors = nic->vectors; | |
967 | } else { | |
968 | nd->nvectors = DEV_NVECTORS_UNSPECIFIED; | |
f83c6e10 MM |
969 | } |
970 | ||
971 | nd->used = 1; | |
f83c6e10 MM |
972 | nb_nics++; |
973 | ||
974 | return idx; | |
975 | } | |
976 | ||
6687b79d | 977 | |
f394b2e2 | 978 | static int (* const net_client_init_fun[NET_CLIENT_DRIVER__MAX])( |
cebea510 | 979 | const Netdev *netdev, |
6687b79d | 980 | const char *name, |
a30ecde6 | 981 | NetClientState *peer, Error **errp) = { |
f394b2e2 | 982 | [NET_CLIENT_DRIVER_NIC] = net_init_nic, |
ec302ffd | 983 | #ifdef CONFIG_SLIRP |
f394b2e2 | 984 | [NET_CLIENT_DRIVER_USER] = net_init_slirp, |
2944e4ec | 985 | #endif |
f394b2e2 EB |
986 | [NET_CLIENT_DRIVER_TAP] = net_init_tap, |
987 | [NET_CLIENT_DRIVER_SOCKET] = net_init_socket, | |
dd51058d | 988 | #ifdef CONFIG_VDE |
f394b2e2 | 989 | [NET_CLIENT_DRIVER_VDE] = net_init_vde, |
58952137 VM |
990 | #endif |
991 | #ifdef CONFIG_NETMAP | |
f394b2e2 | 992 | [NET_CLIENT_DRIVER_NETMAP] = net_init_netmap, |
dd51058d | 993 | #endif |
2944e4ec | 994 | #ifdef CONFIG_NET_BRIDGE |
f394b2e2 | 995 | [NET_CLIENT_DRIVER_BRIDGE] = net_init_bridge, |
6687b79d | 996 | #endif |
f394b2e2 | 997 | [NET_CLIENT_DRIVER_HUBPORT] = net_init_hubport, |
56f41de7 | 998 | #ifdef CONFIG_VHOST_NET_USER |
f394b2e2 | 999 | [NET_CLIENT_DRIVER_VHOST_USER] = net_init_vhost_user, |
03ce5744 | 1000 | #endif |
1e0a84ea CL |
1001 | #ifdef CONFIG_VHOST_NET_VDPA |
1002 | [NET_CLIENT_DRIVER_VHOST_VDPA] = net_init_vhost_vdpa, | |
1003 | #endif | |
015a33bd | 1004 | #ifdef CONFIG_L2TPV3 |
f394b2e2 | 1005 | [NET_CLIENT_DRIVER_L2TPV3] = net_init_l2tpv3, |
3fb69aa1 | 1006 | #endif |
f83c6e10 MM |
1007 | }; |
1008 | ||
6687b79d | 1009 | |
71830d84 | 1010 | static int net_client_init1(const Netdev *netdev, bool is_netdev, Error **errp) |
f83c6e10 | 1011 | { |
4ef0defb | 1012 | NetClientState *peer = NULL; |
831734cc | 1013 | NetClientState *nc; |
f83c6e10 | 1014 | |
5294e2c7 | 1015 | if (is_netdev) { |
857d2087 | 1016 | if (netdev->type == NET_CLIENT_DRIVER_NIC || |
f394b2e2 | 1017 | !net_client_init_fun[netdev->type]) { |
c6bd8c70 MA |
1018 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "type", |
1019 | "a netdev backend type"); | |
f6b134ac MM |
1020 | return -1; |
1021 | } | |
6687b79d | 1022 | } else { |
71830d84 | 1023 | if (netdev->type == NET_CLIENT_DRIVER_NONE) { |
d139e9a6 | 1024 | return 0; /* nothing to do */ |
1e81aba5 | 1025 | } |
71830d84 TH |
1026 | if (netdev->type == NET_CLIENT_DRIVER_HUBPORT || |
1027 | !net_client_init_fun[netdev->type]) { | |
d139e9a6 SH |
1028 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "type", |
1029 | "a net backend type (maybe it is not compiled " | |
1030 | "into this binary)"); | |
1031 | return -1; | |
1032 | } | |
f6b134ac | 1033 | |
af1a5c3e | 1034 | /* Do not add to a hub if it's a nic with a netdev= parameter. */ |
f394b2e2 | 1035 | if (netdev->type != NET_CLIENT_DRIVER_NIC || |
71830d84 | 1036 | !netdev->u.nic.has_netdev) { |
af1a5c3e | 1037 | peer = net_hub_add_port(0, NULL, NULL); |
a2dbe135 | 1038 | } |
4ef0defb | 1039 | } |
6687b79d | 1040 | |
831734cc MA |
1041 | nc = qemu_find_netdev(netdev->id); |
1042 | if (nc) { | |
1043 | error_setg(errp, "Duplicate ID '%s'", netdev->id); | |
1044 | return -1; | |
1045 | } | |
1046 | ||
9d903f30 | 1047 | if (net_client_init_fun[netdev->type](netdev, netdev->id, peer, errp) < 0) { |
4ef0defb SH |
1048 | /* FIXME drop when all init functions store an Error */ |
1049 | if (errp && !*errp) { | |
f820af87 | 1050 | error_setg(errp, "Device '%s' could not be initialized", |
977c736f | 1051 | NetClientDriver_str(netdev->type)); |
f6b134ac | 1052 | } |
4ef0defb | 1053 | return -1; |
f6b134ac | 1054 | } |
08712fcb EB |
1055 | |
1056 | if (is_netdev) { | |
08712fcb EB |
1057 | nc = qemu_find_netdev(netdev->id); |
1058 | assert(nc); | |
1059 | nc->is_netdev = true; | |
1060 | } | |
1061 | ||
6687b79d LE |
1062 | return 0; |
1063 | } | |
1064 | ||
ad6f932f | 1065 | void show_netdevs(void) |
547203ea TH |
1066 | { |
1067 | int idx; | |
1068 | const char *available_netdevs[] = { | |
1069 | "socket", | |
1070 | "hubport", | |
1071 | "tap", | |
1072 | #ifdef CONFIG_SLIRP | |
1073 | "user", | |
1074 | #endif | |
1075 | #ifdef CONFIG_L2TPV3 | |
1076 | "l2tpv3", | |
1077 | #endif | |
1078 | #ifdef CONFIG_VDE | |
1079 | "vde", | |
1080 | #endif | |
1081 | #ifdef CONFIG_NET_BRIDGE | |
1082 | "bridge", | |
1083 | #endif | |
1084 | #ifdef CONFIG_NETMAP | |
1085 | "netmap", | |
1086 | #endif | |
1087 | #ifdef CONFIG_POSIX | |
1088 | "vhost-user", | |
1bc211a1 CL |
1089 | #endif |
1090 | #ifdef CONFIG_VHOST_VDPA | |
1091 | "vhost-vdpa", | |
547203ea TH |
1092 | #endif |
1093 | }; | |
1094 | ||
ad6f932f | 1095 | qemu_printf("Available netdev backend types:\n"); |
547203ea | 1096 | for (idx = 0; idx < ARRAY_SIZE(available_netdevs); idx++) { |
ad6f932f | 1097 | qemu_printf("%s\n", available_netdevs[idx]); |
547203ea TH |
1098 | } |
1099 | } | |
f6b134ac | 1100 | |
aa09a485 | 1101 | static int net_client_init(QemuOpts *opts, bool is_netdev, Error **errp) |
6687b79d | 1102 | { |
c1112b2d | 1103 | gchar **substrings = NULL; |
71830d84 | 1104 | Netdev *object = NULL; |
6687b79d | 1105 | int ret = -1; |
09204eac | 1106 | Visitor *v = opts_visitor_new(opts); |
f83c6e10 | 1107 | |
ad6f932f PB |
1108 | /* Parse convenience option format ip6-net=fec0::0[/64] */ |
1109 | const char *ip6_net = qemu_opt_get(opts, "ipv6-net"); | |
7aac531e | 1110 | |
ad6f932f PB |
1111 | if (ip6_net) { |
1112 | char *prefix_addr; | |
1113 | unsigned long prefix_len = 64; /* Default 64bit prefix length. */ | |
c1112b2d | 1114 | |
ad6f932f PB |
1115 | substrings = g_strsplit(ip6_net, "/", 2); |
1116 | if (!substrings || !substrings[0]) { | |
1117 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "ipv6-net", | |
1118 | "a valid IPv6 prefix"); | |
1119 | goto out; | |
1120 | } | |
c1112b2d | 1121 | |
ad6f932f | 1122 | prefix_addr = substrings[0]; |
7aac531e | 1123 | |
ad6f932f PB |
1124 | /* Handle user-specified prefix length. */ |
1125 | if (substrings[1] && | |
1126 | qemu_strtoul(substrings[1], NULL, 10, &prefix_len)) | |
1127 | { | |
1128 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, | |
1129 | "ipv6-prefixlen", "a number"); | |
1130 | goto out; | |
7aac531e | 1131 | } |
ad6f932f PB |
1132 | |
1133 | qemu_opt_set(opts, "ipv6-prefix", prefix_addr, &error_abort); | |
1134 | qemu_opt_set_number(opts, "ipv6-prefixlen", prefix_len, | |
1135 | &error_abort); | |
1136 | qemu_opt_unset(opts, "ipv6-net"); | |
7aac531e YB |
1137 | } |
1138 | ||
71830d84 TH |
1139 | /* Create an ID for -net if the user did not specify one */ |
1140 | if (!is_netdev && !qemu_opts_id(opts)) { | |
27eb3722 | 1141 | qemu_opts_set_id(opts, id_generate(ID_NET)); |
f83c6e10 MM |
1142 | } |
1143 | ||
14217038 MA |
1144 | if (visit_type_Netdev(v, NULL, &object, errp)) { |
1145 | ret = net_client_init1(object, is_netdev, errp); | |
6687b79d LE |
1146 | } |
1147 | ||
71830d84 | 1148 | qapi_free_Netdev(object); |
6687b79d | 1149 | |
21c520d0 | 1150 | out: |
c1112b2d | 1151 | g_strfreev(substrings); |
09204eac | 1152 | visit_free(v); |
6687b79d | 1153 | return ret; |
f83c6e10 MM |
1154 | } |
1155 | ||
928059a3 LC |
1156 | void netdev_add(QemuOpts *opts, Error **errp) |
1157 | { | |
0e55c381 | 1158 | net_client_init(opts, true, errp); |
928059a3 LC |
1159 | } |
1160 | ||
db2a380c | 1161 | void qmp_netdev_add(Netdev *netdev, Error **errp) |
ae82d324 | 1162 | { |
e73b4317 PB |
1163 | if (!id_wellformed(netdev->id)) { |
1164 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "id", "an identifier"); | |
1165 | return; | |
1166 | } | |
1167 | ||
08712fcb | 1168 | net_client_init1(netdev, true, errp); |
ae82d324 MA |
1169 | } |
1170 | ||
5f964155 | 1171 | void qmp_netdev_del(const char *id, Error **errp) |
ae82d324 | 1172 | { |
35277d14 | 1173 | NetClientState *nc; |
831734cc | 1174 | QemuOpts *opts; |
ae82d324 | 1175 | |
35277d14 SH |
1176 | nc = qemu_find_netdev(id); |
1177 | if (!nc) { | |
75158ebb MA |
1178 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
1179 | "Device '%s' not found", id); | |
5f964155 | 1180 | return; |
ae82d324 | 1181 | } |
5f964155 | 1182 | |
08712fcb | 1183 | if (!nc->is_netdev) { |
645c9496 SH |
1184 | error_setg(errp, "Device '%s' is not a netdev", id); |
1185 | return; | |
1186 | } | |
1187 | ||
b20c6b9e | 1188 | qemu_del_net_client(nc); |
831734cc MA |
1189 | |
1190 | /* | |
1191 | * Wart: we need to delete the QemuOpts associated with netdevs | |
1192 | * created via CLI or HMP, to avoid bogus "Duplicate ID" errors in | |
1193 | * HMP netdev_add. | |
1194 | */ | |
1195 | opts = qemu_opts_find(qemu_find_opts("netdev"), id); | |
1196 | if (opts) { | |
1197 | qemu_opts_del(opts); | |
1198 | } | |
ae82d324 MA |
1199 | } |
1200 | ||
aa9156f4 HZ |
1201 | static void netfilter_print_info(Monitor *mon, NetFilterState *nf) |
1202 | { | |
1203 | char *str; | |
1204 | ObjectProperty *prop; | |
1205 | ObjectPropertyIterator iter; | |
3b098d56 | 1206 | Visitor *v; |
aa9156f4 HZ |
1207 | |
1208 | /* generate info str */ | |
1209 | object_property_iter_init(&iter, OBJECT(nf)); | |
1210 | while ((prop = object_property_iter_next(&iter))) { | |
1211 | if (!strcmp(prop->name, "type")) { | |
1212 | continue; | |
1213 | } | |
3b098d56 | 1214 | v = string_output_visitor_new(false, &str); |
5325cc34 | 1215 | object_property_get(OBJECT(nf), prop->name, v, NULL); |
3b098d56 EB |
1216 | visit_complete(v, &str); |
1217 | visit_free(v); | |
aa9156f4 HZ |
1218 | monitor_printf(mon, ",%s=%s", prop->name, str); |
1219 | g_free(str); | |
1220 | } | |
1221 | monitor_printf(mon, "\n"); | |
1222 | } | |
1223 | ||
1a859593 | 1224 | void print_net_client(Monitor *mon, NetClientState *nc) |
44e798d3 | 1225 | { |
a4960f52 YH |
1226 | NetFilterState *nf; |
1227 | ||
1ceef9f2 JW |
1228 | monitor_printf(mon, "%s: index=%d,type=%s,%s\n", nc->name, |
1229 | nc->queue_index, | |
977c736f | 1230 | NetClientDriver_str(nc->info->type), |
603f2f7c | 1231 | nc->info_str ? nc->info_str : ""); |
a4960f52 YH |
1232 | if (!QTAILQ_EMPTY(&nc->filters)) { |
1233 | monitor_printf(mon, "filters:\n"); | |
1234 | } | |
1235 | QTAILQ_FOREACH(nf, &nc->filters, next) { | |
7a309cc9 MA |
1236 | monitor_printf(mon, " - %s: type=%s", |
1237 | object_get_canonical_path_component(OBJECT(nf)), | |
aa9156f4 HZ |
1238 | object_get_typename(OBJECT(nf))); |
1239 | netfilter_print_info(mon, nf); | |
a4960f52 | 1240 | } |
44e798d3 JK |
1241 | } |
1242 | ||
b1be4280 AK |
1243 | RxFilterInfoList *qmp_query_rx_filter(bool has_name, const char *name, |
1244 | Error **errp) | |
1245 | { | |
1246 | NetClientState *nc; | |
95b3a8c8 | 1247 | RxFilterInfoList *filter_list = NULL, **tail = &filter_list; |
b1be4280 AK |
1248 | |
1249 | QTAILQ_FOREACH(nc, &net_clients, next) { | |
b1be4280 AK |
1250 | RxFilterInfo *info; |
1251 | ||
1252 | if (has_name && strcmp(nc->name, name) != 0) { | |
1253 | continue; | |
1254 | } | |
1255 | ||
1256 | /* only query rx-filter information of NIC */ | |
f394b2e2 | 1257 | if (nc->info->type != NET_CLIENT_DRIVER_NIC) { |
b1be4280 AK |
1258 | if (has_name) { |
1259 | error_setg(errp, "net client(%s) isn't a NIC", name); | |
e9d635ea | 1260 | assert(!filter_list); |
9083da1d | 1261 | return NULL; |
b1be4280 AK |
1262 | } |
1263 | continue; | |
1264 | } | |
1265 | ||
5320c2ca VY |
1266 | /* only query information on queue 0 since the info is per nic, |
1267 | * not per queue | |
1268 | */ | |
1269 | if (nc->queue_index != 0) | |
1270 | continue; | |
1271 | ||
b1be4280 AK |
1272 | if (nc->info->query_rx_filter) { |
1273 | info = nc->info->query_rx_filter(nc); | |
95b3a8c8 | 1274 | QAPI_LIST_APPEND(tail, info); |
b1be4280 AK |
1275 | } else if (has_name) { |
1276 | error_setg(errp, "net client(%s) doesn't support" | |
1277 | " rx-filter querying", name); | |
e9d635ea | 1278 | assert(!filter_list); |
9083da1d | 1279 | return NULL; |
b1be4280 | 1280 | } |
638fb141 MA |
1281 | |
1282 | if (has_name) { | |
1283 | break; | |
1284 | } | |
b1be4280 AK |
1285 | } |
1286 | ||
9083da1d | 1287 | if (filter_list == NULL && has_name) { |
b1be4280 AK |
1288 | error_setg(errp, "invalid net client name: %s", name); |
1289 | } | |
1290 | ||
1291 | return filter_list; | |
1292 | } | |
1293 | ||
d32ad10a AK |
1294 | NetdevInfoList *qmp_query_netdev(Error **errp) |
1295 | { | |
1296 | NetdevInfoList *list = NULL; | |
1297 | NetClientState *nc; | |
1298 | ||
1299 | QTAILQ_FOREACH(nc, &net_clients, next) { | |
1300 | /* | |
1301 | * Only look at netdevs (backend network devices), not for each queue | |
1302 | * or NIC / hubport | |
1303 | */ | |
1304 | if (nc->stored_config) { | |
1305 | NetdevInfo *element = QAPI_CLONE(NetdevInfo, nc->stored_config); | |
1306 | ||
1307 | g_free(element->id); /* Need to dealloc empty id after clone */ | |
1308 | element->id = g_strdup(nc->name); | |
1309 | ||
1310 | element->has_peer_id = nc->peer != NULL; | |
1311 | if (element->has_peer_id) { | |
1312 | element->peer_id = g_strdup(nc->peer->name); | |
1313 | } | |
1314 | ||
1315 | QAPI_LIST_PREPEND(list, element); | |
1316 | } | |
1317 | } | |
1318 | ||
1319 | return list; | |
1320 | } | |
1321 | ||
1ce6be24 | 1322 | void hmp_info_network(Monitor *mon, const QDict *qdict) |
63a01ef8 | 1323 | { |
35277d14 | 1324 | NetClientState *nc, *peer; |
f394b2e2 | 1325 | NetClientDriver type; |
63a01ef8 | 1326 | |
1a859593 ZYW |
1327 | net_hub_info(mon); |
1328 | ||
35277d14 SH |
1329 | QTAILQ_FOREACH(nc, &net_clients, next) { |
1330 | peer = nc->peer; | |
1331 | type = nc->info->type; | |
5610c3aa | 1332 | |
1a859593 ZYW |
1333 | /* Skip if already printed in hub info */ |
1334 | if (net_hub_id_for_client(nc, NULL) == 0) { | |
1335 | continue; | |
5610c3aa | 1336 | } |
1a859593 | 1337 | |
f394b2e2 | 1338 | if (!peer || type == NET_CLIENT_DRIVER_NIC) { |
35277d14 | 1339 | print_net_client(mon, nc); |
19061e63 | 1340 | } /* else it's a netdev connected to a NIC, printed with the NIC */ |
f394b2e2 | 1341 | if (peer && type == NET_CLIENT_DRIVER_NIC) { |
1a859593 | 1342 | monitor_printf(mon, " \\ "); |
44e798d3 | 1343 | print_net_client(mon, peer); |
a0104e0e | 1344 | } |
a0104e0e | 1345 | } |
63a01ef8 AL |
1346 | } |
1347 | ||
5fbba3d6 ZC |
1348 | void colo_notify_filters_event(int event, Error **errp) |
1349 | { | |
1350 | NetClientState *nc; | |
1351 | NetFilterState *nf; | |
1352 | NetFilterClass *nfc = NULL; | |
1353 | Error *local_err = NULL; | |
1354 | ||
1355 | QTAILQ_FOREACH(nc, &net_clients, next) { | |
1356 | QTAILQ_FOREACH(nf, &nc->filters, next) { | |
1357 | nfc = NETFILTER_GET_CLASS(OBJECT(nf)); | |
1358 | nfc->handle_event(nf, event, &local_err); | |
1359 | if (local_err) { | |
1360 | error_propagate(errp, local_err); | |
1361 | return; | |
1362 | } | |
1363 | } | |
1364 | } | |
1365 | } | |
1366 | ||
4b37156c | 1367 | void qmp_set_link(const char *name, bool up, Error **errp) |
436e5e53 | 1368 | { |
1ceef9f2 JW |
1369 | NetClientState *ncs[MAX_QUEUE_NUM]; |
1370 | NetClientState *nc; | |
1371 | int queues, i; | |
436e5e53 | 1372 | |
1ceef9f2 | 1373 | queues = qemu_find_net_clients_except(name, ncs, |
f394b2e2 | 1374 | NET_CLIENT_DRIVER__MAX, |
1ceef9f2 JW |
1375 | MAX_QUEUE_NUM); |
1376 | ||
1377 | if (queues == 0) { | |
75158ebb MA |
1378 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
1379 | "Device '%s' not found", name); | |
4b37156c | 1380 | return; |
436e5e53 | 1381 | } |
1ceef9f2 | 1382 | nc = ncs[0]; |
436e5e53 | 1383 | |
1ceef9f2 JW |
1384 | for (i = 0; i < queues; i++) { |
1385 | ncs[i]->link_down = !up; | |
1386 | } | |
436e5e53 | 1387 | |
35277d14 SH |
1388 | if (nc->info->link_status_changed) { |
1389 | nc->info->link_status_changed(nc); | |
665a3b07 | 1390 | } |
ab1cbe1c | 1391 | |
02d38fcb VY |
1392 | if (nc->peer) { |
1393 | /* Change peer link only if the peer is NIC and then notify peer. | |
1394 | * If the peer is a HUBPORT or a backend, we do not change the | |
1395 | * link status. | |
1396 | * | |
af1a5c3e | 1397 | * This behavior is compatible with qemu hubs where there could be |
02d38fcb VY |
1398 | * multiple clients that can still communicate with each other in |
1399 | * disconnected mode. For now maintain this compatibility. | |
1400 | */ | |
f394b2e2 | 1401 | if (nc->peer->info->type == NET_CLIENT_DRIVER_NIC) { |
02d38fcb VY |
1402 | for (i = 0; i < queues; i++) { |
1403 | ncs[i]->peer->link_down = !up; | |
1404 | } | |
1405 | } | |
1406 | if (nc->peer->info->link_status_changed) { | |
1407 | nc->peer->info->link_status_changed(nc->peer); | |
1408 | } | |
ab1cbe1c | 1409 | } |
436e5e53 AL |
1410 | } |
1411 | ||
538f0497 | 1412 | static void net_vm_change_state_handler(void *opaque, bool running, |
ca77d85e MT |
1413 | RunState state) |
1414 | { | |
625de449 FZ |
1415 | NetClientState *nc; |
1416 | NetClientState *tmp; | |
ca77d85e | 1417 | |
625de449 FZ |
1418 | QTAILQ_FOREACH_SAFE(nc, &net_clients, next, tmp) { |
1419 | if (running) { | |
1420 | /* Flush queued packets and wake up backends. */ | |
1421 | if (nc->peer && qemu_can_send_packet(nc)) { | |
1422 | qemu_flush_queued_packets(nc->peer); | |
1423 | } | |
1424 | } else { | |
1425 | /* Complete all queued packets, to guarantee we don't modify | |
1426 | * state later when VM is not running. | |
1427 | */ | |
ca77d85e MT |
1428 | qemu_flush_or_purge_queued_packets(nc, true); |
1429 | } | |
1430 | } | |
1431 | } | |
1432 | ||
63a01ef8 AL |
1433 | void net_cleanup(void) |
1434 | { | |
1ceef9f2 | 1435 | NetClientState *nc; |
577c4af9 | 1436 | |
1ceef9f2 JW |
1437 | /* We may del multiple entries during qemu_del_net_client(), |
1438 | * so QTAILQ_FOREACH_SAFE() is also not safe here. | |
1439 | */ | |
1440 | while (!QTAILQ_EMPTY(&net_clients)) { | |
1441 | nc = QTAILQ_FIRST(&net_clients); | |
f394b2e2 | 1442 | if (nc->info->type == NET_CLIENT_DRIVER_NIC) { |
948ecf21 JW |
1443 | qemu_del_nic(qemu_get_nic(nc)); |
1444 | } else { | |
1445 | qemu_del_net_client(nc); | |
1446 | } | |
577c4af9 | 1447 | } |
ca77d85e MT |
1448 | |
1449 | qemu_del_vm_change_state_handler(net_change_state_entry); | |
63a01ef8 AL |
1450 | } |
1451 | ||
668680f7 | 1452 | void net_check_clients(void) |
63a01ef8 | 1453 | { |
35277d14 | 1454 | NetClientState *nc; |
48e2faf2 | 1455 | int i; |
63a01ef8 | 1456 | |
81017645 | 1457 | net_hub_check_clients(); |
ac60cc18 | 1458 | |
35277d14 SH |
1459 | QTAILQ_FOREACH(nc, &net_clients, next) { |
1460 | if (!nc->peer) { | |
8297be80 | 1461 | warn_report("%s %s has no peer", |
b62e39b4 AF |
1462 | nc->info->type == NET_CLIENT_DRIVER_NIC |
1463 | ? "nic" : "netdev", | |
1464 | nc->name); | |
efe32fdd MA |
1465 | } |
1466 | } | |
48e2faf2 PM |
1467 | |
1468 | /* Check that all NICs requested via -net nic actually got created. | |
1469 | * NICs created via -device don't need to be checked here because | |
1470 | * they are always instantiated. | |
1471 | */ | |
1472 | for (i = 0; i < MAX_NICS; i++) { | |
1473 | NICInfo *nd = &nd_table[i]; | |
1474 | if (nd->used && !nd->instantiated) { | |
8297be80 AF |
1475 | warn_report("requested NIC (%s, model %s) " |
1476 | "was not created (not supported by this machine?)", | |
1477 | nd->name ? nd->name : "anonymous", | |
1478 | nd->model ? nd->model : "unspecified"); | |
48e2faf2 PM |
1479 | } |
1480 | } | |
63a01ef8 | 1481 | } |
dc1c9fe8 | 1482 | |
28d0de7a | 1483 | static int net_init_client(void *dummy, QemuOpts *opts, Error **errp) |
dc1c9fe8 | 1484 | { |
34f708b0 | 1485 | return net_client_init(opts, false, errp); |
f6b134ac MM |
1486 | } |
1487 | ||
28d0de7a | 1488 | static int net_init_netdev(void *dummy, QemuOpts *opts, Error **errp) |
f6b134ac | 1489 | { |
ad6f932f PB |
1490 | const char *type = qemu_opt_get(opts, "type"); |
1491 | ||
1492 | if (type && is_help_option(type)) { | |
1493 | show_netdevs(); | |
1494 | exit(0); | |
1495 | } | |
34f708b0 | 1496 | return net_client_init(opts, true, errp); |
dc1c9fe8 | 1497 | } |
4559a1db | 1498 | |
78cd6f7b TH |
1499 | /* For the convenience "--nic" parameter */ |
1500 | static int net_param_nic(void *dummy, QemuOpts *opts, Error **errp) | |
1501 | { | |
1502 | char *mac, *nd_id; | |
1503 | int idx, ret; | |
1504 | NICInfo *ni; | |
1505 | const char *type; | |
1506 | ||
1507 | type = qemu_opt_get(opts, "type"); | |
1508 | if (type && g_str_equal(type, "none")) { | |
1509 | return 0; /* Nothing to do, default_net is cleared in vl.c */ | |
1510 | } | |
1511 | ||
1512 | idx = nic_get_free_idx(); | |
1513 | if (idx == -1 || nb_nics >= MAX_NICS) { | |
1514 | error_setg(errp, "no more on-board/default NIC slots available"); | |
4559a1db LC |
1515 | return -1; |
1516 | } | |
1517 | ||
78cd6f7b TH |
1518 | if (!type) { |
1519 | qemu_opt_set(opts, "type", "user", &error_abort); | |
1520 | } | |
1521 | ||
1522 | ni = &nd_table[idx]; | |
1523 | memset(ni, 0, sizeof(*ni)); | |
1524 | ni->model = qemu_opt_get_del(opts, "model"); | |
1525 | ||
1526 | /* Create an ID if the user did not specify one */ | |
1527 | nd_id = g_strdup(qemu_opts_id(opts)); | |
1528 | if (!nd_id) { | |
27eb3722 | 1529 | nd_id = id_generate(ID_NET); |
78cd6f7b TH |
1530 | qemu_opts_set_id(opts, nd_id); |
1531 | } | |
1532 | ||
1533 | /* Handle MAC address */ | |
1534 | mac = qemu_opt_get_del(opts, "mac"); | |
1535 | if (mac) { | |
1536 | ret = net_parse_macaddr(ni->macaddr.a, mac); | |
1537 | g_free(mac); | |
1538 | if (ret) { | |
1539 | error_setg(errp, "invalid syntax for ethernet address"); | |
9d946191 | 1540 | goto out; |
78cd6f7b TH |
1541 | } |
1542 | if (is_multicast_ether_addr(ni->macaddr.a)) { | |
1543 | error_setg(errp, "NIC cannot have multicast MAC address"); | |
9d946191 TH |
1544 | ret = -1; |
1545 | goto out; | |
78cd6f7b TH |
1546 | } |
1547 | } | |
1548 | qemu_macaddr_default_if_unset(&ni->macaddr); | |
1549 | ||
1550 | ret = net_client_init(opts, true, errp); | |
1551 | if (ret == 0) { | |
1552 | ni->netdev = qemu_find_netdev(nd_id); | |
1553 | ni->used = true; | |
1554 | nb_nics++; | |
1555 | } | |
1556 | ||
9d946191 | 1557 | out: |
78cd6f7b | 1558 | g_free(nd_id); |
4559a1db | 1559 | return ret; |
dc1c9fe8 MM |
1560 | } |
1561 | ||
34f708b0 | 1562 | int net_init_clients(Error **errp) |
dc1c9fe8 | 1563 | { |
ca77d85e MT |
1564 | net_change_state_entry = |
1565 | qemu_add_vm_change_state_handler(net_vm_change_state_handler, NULL); | |
1566 | ||
94878994 | 1567 | QTAILQ_INIT(&net_clients); |
5610c3aa | 1568 | |
28d0de7a | 1569 | if (qemu_opts_foreach(qemu_find_opts("netdev"), |
34f708b0 | 1570 | net_init_netdev, NULL, errp)) { |
f6b134ac | 1571 | return -1; |
a4c7367f | 1572 | } |
f6b134ac | 1573 | |
78cd6f7b TH |
1574 | if (qemu_opts_foreach(qemu_find_opts("nic"), net_param_nic, NULL, errp)) { |
1575 | return -1; | |
1576 | } | |
1577 | ||
34f708b0 | 1578 | if (qemu_opts_foreach(qemu_find_opts("net"), net_init_client, NULL, errp)) { |
dc1c9fe8 MM |
1579 | return -1; |
1580 | } | |
1581 | ||
dc1c9fe8 MM |
1582 | return 0; |
1583 | } | |
1584 | ||
7f161aae | 1585 | int net_client_parse(QemuOptsList *opts_list, const char *optarg) |
dc1c9fe8 | 1586 | { |
70b94331 | 1587 | if (!qemu_opts_parse_noisily(opts_list, optarg, true)) { |
dc1c9fe8 MM |
1588 | return -1; |
1589 | } | |
1590 | ||
1591 | return 0; | |
1592 | } | |
7fc8d918 JW |
1593 | |
1594 | /* From FreeBSD */ | |
1595 | /* XXX: optimize */ | |
eaba8f34 | 1596 | uint32_t net_crc32(const uint8_t *p, int len) |
7fc8d918 JW |
1597 | { |
1598 | uint32_t crc; | |
1599 | int carry, i, j; | |
1600 | uint8_t b; | |
1601 | ||
1602 | crc = 0xffffffff; | |
eaba8f34 MCA |
1603 | for (i = 0; i < len; i++) { |
1604 | b = *p++; | |
7fc8d918 JW |
1605 | for (j = 0; j < 8; j++) { |
1606 | carry = ((crc & 0x80000000L) ? 1 : 0) ^ (b & 0x01); | |
1607 | crc <<= 1; | |
1608 | b >>= 1; | |
1609 | if (carry) { | |
eaba8f34 | 1610 | crc = ((crc ^ POLYNOMIAL_BE) | carry); |
7fc8d918 JW |
1611 | } |
1612 | } | |
1613 | } | |
eaba8f34 MCA |
1614 | |
1615 | return crc; | |
1616 | } | |
1617 | ||
f1a7deb9 MCA |
1618 | uint32_t net_crc32_le(const uint8_t *p, int len) |
1619 | { | |
1620 | uint32_t crc; | |
1621 | int carry, i, j; | |
1622 | uint8_t b; | |
1623 | ||
1624 | crc = 0xffffffff; | |
1625 | for (i = 0; i < len; i++) { | |
1626 | b = *p++; | |
1627 | for (j = 0; j < 8; j++) { | |
1628 | carry = (crc & 0x1) ^ (b & 0x01); | |
1629 | crc >>= 1; | |
1630 | b >>= 1; | |
1631 | if (carry) { | |
1632 | crc ^= POLYNOMIAL_LE; | |
1633 | } | |
1634 | } | |
1635 | } | |
1636 | ||
1637 | return crc; | |
1638 | } | |
1639 | ||
4d454574 PB |
1640 | QemuOptsList qemu_netdev_opts = { |
1641 | .name = "netdev", | |
1642 | .implied_opt_name = "type", | |
1643 | .head = QTAILQ_HEAD_INITIALIZER(qemu_netdev_opts.head), | |
78cd6f7b TH |
1644 | .desc = { |
1645 | /* | |
1646 | * no elements => accept any params | |
1647 | * validation will happen later | |
1648 | */ | |
1649 | { /* end of list */ } | |
1650 | }, | |
1651 | }; | |
1652 | ||
1653 | QemuOptsList qemu_nic_opts = { | |
1654 | .name = "nic", | |
1655 | .implied_opt_name = "type", | |
1656 | .head = QTAILQ_HEAD_INITIALIZER(qemu_nic_opts.head), | |
4d454574 PB |
1657 | .desc = { |
1658 | /* | |
1659 | * no elements => accept any params | |
1660 | * validation will happen later | |
1661 | */ | |
1662 | { /* end of list */ } | |
1663 | }, | |
1664 | }; | |
1665 | ||
1666 | QemuOptsList qemu_net_opts = { | |
1667 | .name = "net", | |
1668 | .implied_opt_name = "type", | |
1669 | .head = QTAILQ_HEAD_INITIALIZER(qemu_net_opts.head), | |
1670 | .desc = { | |
1671 | /* | |
1672 | * no elements => accept any params | |
1673 | * validation will happen later | |
1674 | */ | |
1675 | { /* end of list */ } | |
1676 | }, | |
1677 | }; | |
16a3df40 ZC |
1678 | |
1679 | void net_socket_rs_init(SocketReadState *rs, | |
3cde5ea2 ZC |
1680 | SocketReadStateFinalize *finalize, |
1681 | bool vnet_hdr) | |
16a3df40 ZC |
1682 | { |
1683 | rs->state = 0; | |
3cde5ea2 | 1684 | rs->vnet_hdr = vnet_hdr; |
16a3df40 ZC |
1685 | rs->index = 0; |
1686 | rs->packet_len = 0; | |
3cde5ea2 | 1687 | rs->vnet_hdr_len = 0; |
16a3df40 ZC |
1688 | memset(rs->buf, 0, sizeof(rs->buf)); |
1689 | rs->finalize = finalize; | |
1690 | } | |
1691 | ||
1692 | /* | |
1693 | * Returns | |
e9e0a585 ZC |
1694 | * 0: success |
1695 | * -1: error occurs | |
16a3df40 ZC |
1696 | */ |
1697 | int net_fill_rstate(SocketReadState *rs, const uint8_t *buf, int size) | |
1698 | { | |
1699 | unsigned int l; | |
1700 | ||
1701 | while (size > 0) { | |
3cde5ea2 ZC |
1702 | /* Reassemble a packet from the network. |
1703 | * 0 = getting length. | |
1704 | * 1 = getting vnet header length. | |
1705 | * 2 = getting data. | |
1706 | */ | |
1707 | switch (rs->state) { | |
16a3df40 ZC |
1708 | case 0: |
1709 | l = 4 - rs->index; | |
1710 | if (l > size) { | |
1711 | l = size; | |
1712 | } | |
1713 | memcpy(rs->buf + rs->index, buf, l); | |
1714 | buf += l; | |
1715 | size -= l; | |
1716 | rs->index += l; | |
1717 | if (rs->index == 4) { | |
1718 | /* got length */ | |
1719 | rs->packet_len = ntohl(*(uint32_t *)rs->buf); | |
1720 | rs->index = 0; | |
3cde5ea2 ZC |
1721 | if (rs->vnet_hdr) { |
1722 | rs->state = 1; | |
1723 | } else { | |
1724 | rs->state = 2; | |
1725 | rs->vnet_hdr_len = 0; | |
1726 | } | |
16a3df40 ZC |
1727 | } |
1728 | break; | |
1729 | case 1: | |
3cde5ea2 ZC |
1730 | l = 4 - rs->index; |
1731 | if (l > size) { | |
1732 | l = size; | |
1733 | } | |
1734 | memcpy(rs->buf + rs->index, buf, l); | |
1735 | buf += l; | |
1736 | size -= l; | |
1737 | rs->index += l; | |
1738 | if (rs->index == 4) { | |
1739 | /* got vnet header length */ | |
1740 | rs->vnet_hdr_len = ntohl(*(uint32_t *)rs->buf); | |
1741 | rs->index = 0; | |
1742 | rs->state = 2; | |
1743 | } | |
1744 | break; | |
1745 | case 2: | |
16a3df40 ZC |
1746 | l = rs->packet_len - rs->index; |
1747 | if (l > size) { | |
1748 | l = size; | |
1749 | } | |
1750 | if (rs->index + l <= sizeof(rs->buf)) { | |
1751 | memcpy(rs->buf + rs->index, buf, l); | |
1752 | } else { | |
1753 | fprintf(stderr, "serious error: oversized packet received," | |
1754 | "connection terminated.\n"); | |
1755 | rs->index = rs->state = 0; | |
1756 | return -1; | |
1757 | } | |
1758 | ||
1759 | rs->index += l; | |
1760 | buf += l; | |
1761 | size -= l; | |
1762 | if (rs->index >= rs->packet_len) { | |
1763 | rs->index = 0; | |
1764 | rs->state = 0; | |
e79cd406 DB |
1765 | assert(rs->finalize); |
1766 | rs->finalize(rs); | |
16a3df40 ZC |
1767 | } |
1768 | break; | |
1769 | } | |
1770 | } | |
e9e0a585 ZC |
1771 | |
1772 | assert(size == 0); | |
16a3df40 ZC |
1773 | return 0; |
1774 | } |