]>
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" |
d40cdb10 | 26 | |
1422e32d | 27 | #include "net/net.h" |
fd9400b3 PB |
28 | #include "clients.h" |
29 | #include "hub.h" | |
a27bd6c7 | 30 | #include "hw/qdev-properties.h" |
1422e32d | 31 | #include "net/slirp.h" |
d60b20cf | 32 | #include "net/eth.h" |
fd9400b3 | 33 | #include "util.h" |
a245fc18 | 34 | |
83c9089e | 35 | #include "monitor/monitor.h" |
f348b6d1 | 36 | #include "qemu/help_option.h" |
9af23989 MA |
37 | #include "qapi/qapi-commands-net.h" |
38 | #include "qapi/qapi-visit-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" |
559964a1 | 54 | #include "sysemu/qtest.h" |
54d31236 MA |
55 | #include "sysemu/runstate.h" |
56 | #include "sysemu/sysemu.h" | |
fdccce45 | 57 | #include "net/filter.h" |
aa9156f4 | 58 | #include "qapi/string-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 | { |
35277d14 | 133 | snprintf(nc->info_str, sizeof(nc->info_str), |
4dda4063 | 134 | "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x", |
35277d14 | 135 | nc->model, |
7cb7434b AL |
136 | macaddr[0], macaddr[1], macaddr[2], |
137 | macaddr[3], macaddr[4], macaddr[5]); | |
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); | |
f7860455 JW |
356 | if (nc->destructor) { |
357 | nc->destructor(nc); | |
358 | } | |
63a01ef8 AL |
359 | } |
360 | ||
b20c6b9e | 361 | void qemu_del_net_client(NetClientState *nc) |
a083a89d | 362 | { |
1ceef9f2 JW |
363 | NetClientState *ncs[MAX_QUEUE_NUM]; |
364 | int queues, i; | |
fdccce45 | 365 | NetFilterState *nf, *next; |
1ceef9f2 | 366 | |
f394b2e2 | 367 | assert(nc->info->type != NET_CLIENT_DRIVER_NIC); |
7fb43911 | 368 | |
1ceef9f2 JW |
369 | /* If the NetClientState belongs to a multiqueue backend, we will change all |
370 | * other NetClientStates also. | |
371 | */ | |
372 | queues = qemu_find_net_clients_except(nc->name, ncs, | |
f394b2e2 | 373 | NET_CLIENT_DRIVER_NIC, |
1ceef9f2 JW |
374 | MAX_QUEUE_NUM); |
375 | assert(queues != 0); | |
376 | ||
fdccce45 YH |
377 | QTAILQ_FOREACH_SAFE(nf, &nc->filters, next, next) { |
378 | object_unparent(OBJECT(nf)); | |
379 | } | |
380 | ||
a083a89d | 381 | /* If there is a peer NIC, delete and cleanup client, but do not free. */ |
f394b2e2 | 382 | if (nc->peer && nc->peer->info->type == NET_CLIENT_DRIVER_NIC) { |
cc1f0f45 | 383 | NICState *nic = qemu_get_nic(nc->peer); |
a083a89d MT |
384 | if (nic->peer_deleted) { |
385 | return; | |
386 | } | |
387 | nic->peer_deleted = true; | |
1ceef9f2 JW |
388 | |
389 | for (i = 0; i < queues; i++) { | |
390 | ncs[i]->peer->link_down = true; | |
391 | } | |
392 | ||
35277d14 SH |
393 | if (nc->peer->info->link_status_changed) { |
394 | nc->peer->info->link_status_changed(nc->peer); | |
a083a89d | 395 | } |
1ceef9f2 JW |
396 | |
397 | for (i = 0; i < queues; i++) { | |
398 | qemu_cleanup_net_client(ncs[i]); | |
399 | } | |
400 | ||
a083a89d MT |
401 | return; |
402 | } | |
403 | ||
1ceef9f2 JW |
404 | for (i = 0; i < queues; i++) { |
405 | qemu_cleanup_net_client(ncs[i]); | |
406 | qemu_free_net_client(ncs[i]); | |
407 | } | |
948ecf21 JW |
408 | } |
409 | ||
410 | void qemu_del_nic(NICState *nic) | |
411 | { | |
575a1c0e | 412 | int i, queues = MAX(nic->conf->peers.queues, 1); |
1ceef9f2 | 413 | |
2bc22a58 SZ |
414 | qemu_macaddr_set_free(&nic->conf->macaddr); |
415 | ||
d2abc563 YB |
416 | for (i = 0; i < queues; i++) { |
417 | NetClientState *nc = qemu_get_subqueue(nic, i); | |
418 | /* If this is a peer NIC and peer has already been deleted, free it now. */ | |
419 | if (nic->peer_deleted) { | |
420 | qemu_free_net_client(nc->peer); | |
421 | } else if (nc->peer) { | |
422 | /* if there are RX packets pending, complete them */ | |
423 | qemu_purge_queued_packets(nc->peer); | |
1a609520 JK |
424 | } |
425 | } | |
1a609520 | 426 | |
1ceef9f2 JW |
427 | for (i = queues - 1; i >= 0; i--) { |
428 | NetClientState *nc = qemu_get_subqueue(nic, i); | |
429 | ||
430 | qemu_cleanup_net_client(nc); | |
431 | qemu_free_net_client(nc); | |
432 | } | |
f6b26cf2 JW |
433 | |
434 | g_free(nic); | |
1a609520 JK |
435 | } |
436 | ||
57f9ef17 MM |
437 | void qemu_foreach_nic(qemu_nic_foreach func, void *opaque) |
438 | { | |
4e68f7a0 | 439 | NetClientState *nc; |
57f9ef17 | 440 | |
94878994 | 441 | QTAILQ_FOREACH(nc, &net_clients, next) { |
f394b2e2 | 442 | if (nc->info->type == NET_CLIENT_DRIVER_NIC) { |
1ceef9f2 JW |
443 | if (nc->queue_index == 0) { |
444 | func(qemu_get_nic(nc), opaque); | |
445 | } | |
57f9ef17 MM |
446 | } |
447 | } | |
57f9ef17 MM |
448 | } |
449 | ||
d6085e3a | 450 | bool qemu_has_ufo(NetClientState *nc) |
1f55ac45 | 451 | { |
d6085e3a | 452 | if (!nc || !nc->info->has_ufo) { |
1f55ac45 VM |
453 | return false; |
454 | } | |
455 | ||
d6085e3a | 456 | return nc->info->has_ufo(nc); |
1f55ac45 VM |
457 | } |
458 | ||
d6085e3a | 459 | bool qemu_has_vnet_hdr(NetClientState *nc) |
1f55ac45 | 460 | { |
d6085e3a | 461 | if (!nc || !nc->info->has_vnet_hdr) { |
1f55ac45 VM |
462 | return false; |
463 | } | |
464 | ||
d6085e3a | 465 | return nc->info->has_vnet_hdr(nc); |
1f55ac45 VM |
466 | } |
467 | ||
d6085e3a | 468 | bool qemu_has_vnet_hdr_len(NetClientState *nc, int len) |
1f55ac45 | 469 | { |
d6085e3a | 470 | if (!nc || !nc->info->has_vnet_hdr_len) { |
1f55ac45 VM |
471 | return false; |
472 | } | |
473 | ||
d6085e3a | 474 | return nc->info->has_vnet_hdr_len(nc, len); |
1f55ac45 VM |
475 | } |
476 | ||
d6085e3a | 477 | void qemu_using_vnet_hdr(NetClientState *nc, bool enable) |
1f55ac45 | 478 | { |
d6085e3a | 479 | if (!nc || !nc->info->using_vnet_hdr) { |
1f55ac45 VM |
480 | return; |
481 | } | |
482 | ||
d6085e3a | 483 | nc->info->using_vnet_hdr(nc, enable); |
1f55ac45 VM |
484 | } |
485 | ||
d6085e3a | 486 | void qemu_set_offload(NetClientState *nc, int csum, int tso4, int tso6, |
1f55ac45 VM |
487 | int ecn, int ufo) |
488 | { | |
d6085e3a | 489 | if (!nc || !nc->info->set_offload) { |
1f55ac45 VM |
490 | return; |
491 | } | |
492 | ||
d6085e3a | 493 | nc->info->set_offload(nc, csum, tso4, tso6, ecn, ufo); |
1f55ac45 VM |
494 | } |
495 | ||
d6085e3a | 496 | void qemu_set_vnet_hdr_len(NetClientState *nc, int len) |
1f55ac45 | 497 | { |
d6085e3a | 498 | if (!nc || !nc->info->set_vnet_hdr_len) { |
1f55ac45 VM |
499 | return; |
500 | } | |
501 | ||
d6b732e9 | 502 | nc->vnet_hdr_len = len; |
d6085e3a | 503 | nc->info->set_vnet_hdr_len(nc, len); |
1f55ac45 VM |
504 | } |
505 | ||
c80cd6bb GK |
506 | int qemu_set_vnet_le(NetClientState *nc, bool is_le) |
507 | { | |
052bd52f | 508 | #ifdef HOST_WORDS_BIGENDIAN |
c80cd6bb GK |
509 | if (!nc || !nc->info->set_vnet_le) { |
510 | return -ENOSYS; | |
511 | } | |
512 | ||
513 | return nc->info->set_vnet_le(nc, is_le); | |
052bd52f MT |
514 | #else |
515 | return 0; | |
516 | #endif | |
c80cd6bb GK |
517 | } |
518 | ||
519 | int qemu_set_vnet_be(NetClientState *nc, bool is_be) | |
520 | { | |
052bd52f MT |
521 | #ifdef HOST_WORDS_BIGENDIAN |
522 | return 0; | |
523 | #else | |
c80cd6bb GK |
524 | if (!nc || !nc->info->set_vnet_be) { |
525 | return -ENOSYS; | |
526 | } | |
527 | ||
528 | return nc->info->set_vnet_be(nc, is_be); | |
052bd52f | 529 | #endif |
c80cd6bb GK |
530 | } |
531 | ||
4e68f7a0 | 532 | int qemu_can_send_packet(NetClientState *sender) |
63a01ef8 | 533 | { |
e1d64c08 HZ |
534 | int vm_running = runstate_is_running(); |
535 | ||
536 | if (!vm_running) { | |
537 | return 0; | |
538 | } | |
539 | ||
a005d073 | 540 | if (!sender->peer) { |
d80b9fc6 MM |
541 | return 1; |
542 | } | |
543 | ||
a005d073 SH |
544 | if (sender->peer->receive_disabled) { |
545 | return 0; | |
546 | } else if (sender->peer->info->can_receive && | |
547 | !sender->peer->info->can_receive(sender->peer)) { | |
548 | return 0; | |
63a01ef8 | 549 | } |
60c07d93 | 550 | return 1; |
63a01ef8 AL |
551 | } |
552 | ||
e64c770d YH |
553 | static ssize_t filter_receive_iov(NetClientState *nc, |
554 | NetFilterDirection direction, | |
555 | NetClientState *sender, | |
556 | unsigned flags, | |
557 | const struct iovec *iov, | |
558 | int iovcnt, | |
559 | NetPacketSent *sent_cb) | |
560 | { | |
561 | ssize_t ret = 0; | |
562 | NetFilterState *nf = NULL; | |
563 | ||
25aaadf0 LZ |
564 | if (direction == NET_FILTER_DIRECTION_TX) { |
565 | QTAILQ_FOREACH(nf, &nc->filters, next) { | |
566 | ret = qemu_netfilter_receive(nf, direction, sender, flags, iov, | |
567 | iovcnt, sent_cb); | |
568 | if (ret) { | |
569 | return ret; | |
570 | } | |
571 | } | |
572 | } else { | |
eae3eb3e | 573 | QTAILQ_FOREACH_REVERSE(nf, &nc->filters, next) { |
25aaadf0 LZ |
574 | ret = qemu_netfilter_receive(nf, direction, sender, flags, iov, |
575 | iovcnt, sent_cb); | |
576 | if (ret) { | |
577 | return ret; | |
578 | } | |
e64c770d YH |
579 | } |
580 | } | |
581 | ||
582 | return ret; | |
583 | } | |
584 | ||
585 | static ssize_t filter_receive(NetClientState *nc, | |
586 | NetFilterDirection direction, | |
587 | NetClientState *sender, | |
588 | unsigned flags, | |
589 | const uint8_t *data, | |
590 | size_t size, | |
591 | NetPacketSent *sent_cb) | |
592 | { | |
593 | struct iovec iov = { | |
594 | .iov_base = (void *)data, | |
595 | .iov_len = size | |
596 | }; | |
597 | ||
598 | return filter_receive_iov(nc, direction, sender, flags, &iov, 1, sent_cb); | |
599 | } | |
600 | ||
35277d14 | 601 | void qemu_purge_queued_packets(NetClientState *nc) |
8cad5516 | 602 | { |
35277d14 | 603 | if (!nc->peer) { |
d80b9fc6 | 604 | return; |
9a6ecb30 | 605 | } |
d80b9fc6 | 606 | |
067404be | 607 | qemu_net_queue_purge(nc->peer->incoming_queue, nc); |
8cad5516 MM |
608 | } |
609 | ||
ca77d85e | 610 | void qemu_flush_or_purge_queued_packets(NetClientState *nc, bool purge) |
e94667b9 | 611 | { |
35277d14 | 612 | nc->receive_disabled = 0; |
9a6ecb30 | 613 | |
f394b2e2 | 614 | if (nc->peer && nc->peer->info->type == NET_CLIENT_DRIVER_HUBPORT) { |
199ee608 LR |
615 | if (net_hub_flush(nc->peer)) { |
616 | qemu_notify_event(); | |
617 | } | |
199ee608 | 618 | } |
067404be | 619 | if (qemu_net_queue_flush(nc->incoming_queue)) { |
987a9b48 PB |
620 | /* We emptied the queue successfully, signal to the IO thread to repoll |
621 | * the file descriptor (for tap, for example). | |
622 | */ | |
623 | qemu_notify_event(); | |
ca77d85e MT |
624 | } else if (purge) { |
625 | /* Unable to empty the queue, purge remaining packets */ | |
5fe19fb8 | 626 | qemu_net_queue_purge(nc->incoming_queue, nc->peer); |
987a9b48 | 627 | } |
e94667b9 MM |
628 | } |
629 | ||
ca77d85e MT |
630 | void qemu_flush_queued_packets(NetClientState *nc) |
631 | { | |
632 | qemu_flush_or_purge_queued_packets(nc, false); | |
633 | } | |
634 | ||
4e68f7a0 | 635 | static ssize_t qemu_send_packet_async_with_flags(NetClientState *sender, |
ca77d175 MM |
636 | unsigned flags, |
637 | const uint8_t *buf, int size, | |
638 | NetPacketSent *sent_cb) | |
764a4d1d | 639 | { |
9a6ecb30 | 640 | NetQueue *queue; |
e64c770d | 641 | int ret; |
436e5e53 | 642 | |
63a01ef8 | 643 | #ifdef DEBUG_NET |
d80b9fc6 | 644 | printf("qemu_send_packet_async:\n"); |
b42581f5 | 645 | qemu_hexdump(stdout, "net", buf, size); |
63a01ef8 | 646 | #endif |
f3b6c7fc | 647 | |
a005d073 | 648 | if (sender->link_down || !sender->peer) { |
9a6ecb30 MM |
649 | return size; |
650 | } | |
651 | ||
e64c770d YH |
652 | /* Let filters handle the packet first */ |
653 | ret = filter_receive(sender, NET_FILTER_DIRECTION_TX, | |
654 | sender, flags, buf, size, sent_cb); | |
655 | if (ret) { | |
656 | return ret; | |
657 | } | |
658 | ||
659 | ret = filter_receive(sender->peer, NET_FILTER_DIRECTION_RX, | |
660 | sender, flags, buf, size, sent_cb); | |
661 | if (ret) { | |
662 | return ret; | |
663 | } | |
664 | ||
067404be | 665 | queue = sender->peer->incoming_queue; |
9a6ecb30 | 666 | |
ca77d175 MM |
667 | return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb); |
668 | } | |
669 | ||
4e68f7a0 | 670 | ssize_t qemu_send_packet_async(NetClientState *sender, |
ca77d175 MM |
671 | const uint8_t *buf, int size, |
672 | NetPacketSent *sent_cb) | |
673 | { | |
674 | return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE, | |
675 | buf, size, sent_cb); | |
f3b6c7fc MM |
676 | } |
677 | ||
625a526b | 678 | ssize_t qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size) |
f3b6c7fc | 679 | { |
625a526b | 680 | return qemu_send_packet_async(nc, buf, size, NULL); |
63a01ef8 AL |
681 | } |
682 | ||
35277d14 | 683 | ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size) |
ca77d175 | 684 | { |
35277d14 | 685 | return qemu_send_packet_async_with_flags(nc, QEMU_NET_PACKET_FLAG_RAW, |
ca77d175 MM |
686 | buf, size, NULL); |
687 | } | |
688 | ||
35277d14 | 689 | static ssize_t nc_sendv_compat(NetClientState *nc, const struct iovec *iov, |
fefe2a78 | 690 | int iovcnt, unsigned flags) |
fbe78f4f | 691 | { |
74044c8f | 692 | uint8_t *buf = NULL; |
fefe2a78 | 693 | uint8_t *buffer; |
ce053661 | 694 | size_t offset; |
74044c8f | 695 | ssize_t ret; |
fbe78f4f | 696 | |
fefe2a78 YH |
697 | if (iovcnt == 1) { |
698 | buffer = iov[0].iov_base; | |
699 | offset = iov[0].iov_len; | |
700 | } else { | |
47f9f158 PL |
701 | offset = iov_size(iov, iovcnt); |
702 | if (offset > NET_BUFSIZE) { | |
703 | return -1; | |
704 | } | |
705 | buf = g_malloc(offset); | |
fefe2a78 | 706 | buffer = buf; |
47f9f158 | 707 | offset = iov_to_buf(iov, iovcnt, 0, buf, offset); |
fefe2a78 | 708 | } |
fbe78f4f | 709 | |
fefe2a78 | 710 | if (flags & QEMU_NET_PACKET_FLAG_RAW && nc->info->receive_raw) { |
74044c8f | 711 | ret = nc->info->receive_raw(nc, buffer, offset); |
fefe2a78 | 712 | } else { |
74044c8f | 713 | ret = nc->info->receive(nc, buffer, offset); |
fefe2a78 | 714 | } |
74044c8f PD |
715 | |
716 | g_free(buf); | |
717 | return ret; | |
fbe78f4f AL |
718 | } |
719 | ||
25c01bd1 JW |
720 | static ssize_t qemu_deliver_packet_iov(NetClientState *sender, |
721 | unsigned flags, | |
722 | const struct iovec *iov, | |
723 | int iovcnt, | |
724 | void *opaque) | |
9a6ecb30 | 725 | { |
35277d14 | 726 | NetClientState *nc = opaque; |
c67f5dc1 | 727 | int ret; |
9a6ecb30 | 728 | |
1592a994 | 729 | |
35277d14 | 730 | if (nc->link_down) { |
25c01bd1 | 731 | return iov_size(iov, iovcnt); |
9a6ecb30 MM |
732 | } |
733 | ||
c67f5dc1 SH |
734 | if (nc->receive_disabled) { |
735 | return 0; | |
736 | } | |
737 | ||
ca1ee3d6 | 738 | if (nc->info->receive_iov && !(flags & QEMU_NET_PACKET_FLAG_RAW)) { |
c67f5dc1 | 739 | ret = nc->info->receive_iov(nc, iov, iovcnt); |
9a6ecb30 | 740 | } else { |
fefe2a78 | 741 | ret = nc_sendv_compat(nc, iov, iovcnt, flags); |
c67f5dc1 SH |
742 | } |
743 | ||
744 | if (ret == 0) { | |
745 | nc->receive_disabled = 1; | |
e94667b9 | 746 | } |
c67f5dc1 SH |
747 | |
748 | return ret; | |
e94667b9 MM |
749 | } |
750 | ||
4e68f7a0 | 751 | ssize_t qemu_sendv_packet_async(NetClientState *sender, |
f3b6c7fc MM |
752 | const struct iovec *iov, int iovcnt, |
753 | NetPacketSent *sent_cb) | |
e94667b9 | 754 | { |
9a6ecb30 | 755 | NetQueue *queue; |
25c01bd1 | 756 | size_t size = iov_size(iov, iovcnt); |
e64c770d | 757 | int ret; |
9a6ecb30 | 758 | |
25c01bd1 JW |
759 | if (size > NET_BUFSIZE) { |
760 | return size; | |
761 | } | |
762 | ||
a005d073 | 763 | if (sender->link_down || !sender->peer) { |
25c01bd1 | 764 | return size; |
e94667b9 MM |
765 | } |
766 | ||
e64c770d YH |
767 | /* Let filters handle the packet first */ |
768 | ret = filter_receive_iov(sender, NET_FILTER_DIRECTION_TX, sender, | |
769 | QEMU_NET_PACKET_FLAG_NONE, iov, iovcnt, sent_cb); | |
770 | if (ret) { | |
771 | return ret; | |
772 | } | |
773 | ||
774 | ret = filter_receive_iov(sender->peer, NET_FILTER_DIRECTION_RX, sender, | |
775 | QEMU_NET_PACKET_FLAG_NONE, iov, iovcnt, sent_cb); | |
776 | if (ret) { | |
777 | return ret; | |
778 | } | |
779 | ||
067404be | 780 | queue = sender->peer->incoming_queue; |
9a6ecb30 | 781 | |
c0b8e49c MM |
782 | return qemu_net_queue_send_iov(queue, sender, |
783 | QEMU_NET_PACKET_FLAG_NONE, | |
784 | iov, iovcnt, sent_cb); | |
fbe78f4f AL |
785 | } |
786 | ||
f3b6c7fc | 787 | ssize_t |
35277d14 | 788 | qemu_sendv_packet(NetClientState *nc, const struct iovec *iov, int iovcnt) |
f3b6c7fc | 789 | { |
35277d14 | 790 | return qemu_sendv_packet_async(nc, iov, iovcnt, NULL); |
63a01ef8 AL |
791 | } |
792 | ||
4e68f7a0 | 793 | NetClientState *qemu_find_netdev(const char *id) |
5869c4d5 | 794 | { |
35277d14 | 795 | NetClientState *nc; |
5869c4d5 | 796 | |
35277d14 | 797 | QTAILQ_FOREACH(nc, &net_clients, next) { |
f394b2e2 | 798 | if (nc->info->type == NET_CLIENT_DRIVER_NIC) |
85dde9a9 | 799 | continue; |
35277d14 SH |
800 | if (!strcmp(nc->name, id)) { |
801 | return nc; | |
5869c4d5 MM |
802 | } |
803 | } | |
804 | ||
805 | return NULL; | |
806 | } | |
807 | ||
6c51ae73 | 808 | int qemu_find_net_clients_except(const char *id, NetClientState **ncs, |
f394b2e2 | 809 | NetClientDriver type, int max) |
6c51ae73 JW |
810 | { |
811 | NetClientState *nc; | |
812 | int ret = 0; | |
813 | ||
814 | QTAILQ_FOREACH(nc, &net_clients, next) { | |
815 | if (nc->info->type == type) { | |
816 | continue; | |
817 | } | |
40d19394 | 818 | if (!id || !strcmp(nc->name, id)) { |
6c51ae73 JW |
819 | if (ret < max) { |
820 | ncs[ret] = nc; | |
821 | } | |
822 | ret++; | |
823 | } | |
824 | } | |
825 | ||
826 | return ret; | |
827 | } | |
828 | ||
7697079b AL |
829 | static int nic_get_free_idx(void) |
830 | { | |
831 | int index; | |
832 | ||
833 | for (index = 0; index < MAX_NICS; index++) | |
834 | if (!nd_table[index].used) | |
835 | return index; | |
836 | return -1; | |
837 | } | |
838 | ||
07caea31 MA |
839 | int qemu_show_nic_models(const char *arg, const char *const *models) |
840 | { | |
841 | int i; | |
842 | ||
c8057f95 | 843 | if (!arg || !is_help_option(arg)) { |
07caea31 | 844 | return 0; |
c8057f95 | 845 | } |
07caea31 | 846 | |
7b71e03a TH |
847 | printf("Supported NIC models:\n"); |
848 | for (i = 0 ; models[i]; i++) { | |
849 | printf("%s\n", models[i]); | |
850 | } | |
07caea31 MA |
851 | return 1; |
852 | } | |
853 | ||
d07f22c5 AL |
854 | void qemu_check_nic_model(NICInfo *nd, const char *model) |
855 | { | |
856 | const char *models[2]; | |
857 | ||
858 | models[0] = model; | |
859 | models[1] = NULL; | |
860 | ||
07caea31 MA |
861 | if (qemu_show_nic_models(nd->model, models)) |
862 | exit(0); | |
863 | if (qemu_find_nic_model(nd, models, model) < 0) | |
864 | exit(1); | |
d07f22c5 AL |
865 | } |
866 | ||
07caea31 MA |
867 | int qemu_find_nic_model(NICInfo *nd, const char * const *models, |
868 | const char *default_model) | |
d07f22c5 | 869 | { |
07caea31 | 870 | int i; |
d07f22c5 AL |
871 | |
872 | if (!nd->model) | |
7267c094 | 873 | nd->model = g_strdup(default_model); |
d07f22c5 | 874 | |
07caea31 MA |
875 | for (i = 0 ; models[i]; i++) { |
876 | if (strcmp(nd->model, models[i]) == 0) | |
877 | return i; | |
d07f22c5 AL |
878 | } |
879 | ||
6daf194d | 880 | error_report("Unsupported NIC model: %s", nd->model); |
07caea31 | 881 | return -1; |
d07f22c5 AL |
882 | } |
883 | ||
cebea510 | 884 | static int net_init_nic(const Netdev *netdev, const char *name, |
a30ecde6 | 885 | NetClientState *peer, Error **errp) |
f83c6e10 MM |
886 | { |
887 | int idx; | |
888 | NICInfo *nd; | |
2456f36f LE |
889 | const NetLegacyNicOptions *nic; |
890 | ||
f394b2e2 EB |
891 | assert(netdev->type == NET_CLIENT_DRIVER_NIC); |
892 | nic = &netdev->u.nic; | |
f83c6e10 MM |
893 | |
894 | idx = nic_get_free_idx(); | |
895 | if (idx == -1 || nb_nics >= MAX_NICS) { | |
66308868 | 896 | error_setg(errp, "too many NICs"); |
f83c6e10 MM |
897 | return -1; |
898 | } | |
899 | ||
900 | nd = &nd_table[idx]; | |
901 | ||
902 | memset(nd, 0, sizeof(*nd)); | |
903 | ||
2456f36f LE |
904 | if (nic->has_netdev) { |
905 | nd->netdev = qemu_find_netdev(nic->netdev); | |
5869c4d5 | 906 | if (!nd->netdev) { |
66308868 | 907 | error_setg(errp, "netdev '%s' not found", nic->netdev); |
5869c4d5 MM |
908 | return -1; |
909 | } | |
910 | } else { | |
d33d93b2 SH |
911 | assert(peer); |
912 | nd->netdev = peer; | |
5869c4d5 | 913 | } |
c64f50d1 | 914 | nd->name = g_strdup(name); |
2456f36f LE |
915 | if (nic->has_model) { |
916 | nd->model = g_strdup(nic->model); | |
f83c6e10 | 917 | } |
2456f36f LE |
918 | if (nic->has_addr) { |
919 | nd->devaddr = g_strdup(nic->addr); | |
f83c6e10 MM |
920 | } |
921 | ||
2456f36f LE |
922 | if (nic->has_macaddr && |
923 | net_parse_macaddr(nd->macaddr.a, nic->macaddr) < 0) { | |
66308868 | 924 | error_setg(errp, "invalid syntax for ethernet address"); |
f83c6e10 MM |
925 | return -1; |
926 | } | |
d60b20cf DK |
927 | if (nic->has_macaddr && |
928 | is_multicast_ether_addr(nd->macaddr.a)) { | |
66308868 MA |
929 | error_setg(errp, |
930 | "NIC cannot have multicast MAC address (odd 1st byte)"); | |
d60b20cf DK |
931 | return -1; |
932 | } | |
6eed1856 | 933 | qemu_macaddr_default_if_unset(&nd->macaddr); |
f83c6e10 | 934 | |
2456f36f LE |
935 | if (nic->has_vectors) { |
936 | if (nic->vectors > 0x7ffffff) { | |
66308868 | 937 | error_setg(errp, "invalid # of vectors: %"PRIu32, nic->vectors); |
2456f36f LE |
938 | return -1; |
939 | } | |
940 | nd->nvectors = nic->vectors; | |
941 | } else { | |
942 | nd->nvectors = DEV_NVECTORS_UNSPECIFIED; | |
f83c6e10 MM |
943 | } |
944 | ||
945 | nd->used = 1; | |
f83c6e10 MM |
946 | nb_nics++; |
947 | ||
948 | return idx; | |
949 | } | |
950 | ||
6687b79d | 951 | |
f394b2e2 | 952 | static int (* const net_client_init_fun[NET_CLIENT_DRIVER__MAX])( |
cebea510 | 953 | const Netdev *netdev, |
6687b79d | 954 | const char *name, |
a30ecde6 | 955 | NetClientState *peer, Error **errp) = { |
f394b2e2 | 956 | [NET_CLIENT_DRIVER_NIC] = net_init_nic, |
ec302ffd | 957 | #ifdef CONFIG_SLIRP |
f394b2e2 | 958 | [NET_CLIENT_DRIVER_USER] = net_init_slirp, |
2944e4ec | 959 | #endif |
f394b2e2 EB |
960 | [NET_CLIENT_DRIVER_TAP] = net_init_tap, |
961 | [NET_CLIENT_DRIVER_SOCKET] = net_init_socket, | |
dd51058d | 962 | #ifdef CONFIG_VDE |
f394b2e2 | 963 | [NET_CLIENT_DRIVER_VDE] = net_init_vde, |
58952137 VM |
964 | #endif |
965 | #ifdef CONFIG_NETMAP | |
f394b2e2 | 966 | [NET_CLIENT_DRIVER_NETMAP] = net_init_netmap, |
dd51058d | 967 | #endif |
2944e4ec | 968 | #ifdef CONFIG_NET_BRIDGE |
f394b2e2 | 969 | [NET_CLIENT_DRIVER_BRIDGE] = net_init_bridge, |
6687b79d | 970 | #endif |
f394b2e2 | 971 | [NET_CLIENT_DRIVER_HUBPORT] = net_init_hubport, |
56f41de7 | 972 | #ifdef CONFIG_VHOST_NET_USER |
f394b2e2 | 973 | [NET_CLIENT_DRIVER_VHOST_USER] = net_init_vhost_user, |
03ce5744 | 974 | #endif |
1e0a84ea CL |
975 | #ifdef CONFIG_VHOST_NET_VDPA |
976 | [NET_CLIENT_DRIVER_VHOST_VDPA] = net_init_vhost_vdpa, | |
977 | #endif | |
015a33bd | 978 | #ifdef CONFIG_L2TPV3 |
f394b2e2 | 979 | [NET_CLIENT_DRIVER_L2TPV3] = net_init_l2tpv3, |
3fb69aa1 | 980 | #endif |
f83c6e10 MM |
981 | }; |
982 | ||
6687b79d | 983 | |
71830d84 | 984 | static int net_client_init1(const Netdev *netdev, bool is_netdev, Error **errp) |
f83c6e10 | 985 | { |
4ef0defb | 986 | NetClientState *peer = NULL; |
831734cc | 987 | NetClientState *nc; |
f83c6e10 | 988 | |
5294e2c7 | 989 | if (is_netdev) { |
857d2087 | 990 | if (netdev->type == NET_CLIENT_DRIVER_NIC || |
f394b2e2 | 991 | !net_client_init_fun[netdev->type]) { |
c6bd8c70 MA |
992 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "type", |
993 | "a netdev backend type"); | |
f6b134ac MM |
994 | return -1; |
995 | } | |
6687b79d | 996 | } else { |
71830d84 | 997 | if (netdev->type == NET_CLIENT_DRIVER_NONE) { |
d139e9a6 | 998 | return 0; /* nothing to do */ |
1e81aba5 | 999 | } |
71830d84 TH |
1000 | if (netdev->type == NET_CLIENT_DRIVER_HUBPORT || |
1001 | !net_client_init_fun[netdev->type]) { | |
d139e9a6 SH |
1002 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "type", |
1003 | "a net backend type (maybe it is not compiled " | |
1004 | "into this binary)"); | |
1005 | return -1; | |
1006 | } | |
f6b134ac | 1007 | |
af1a5c3e | 1008 | /* Do not add to a hub if it's a nic with a netdev= parameter. */ |
f394b2e2 | 1009 | if (netdev->type != NET_CLIENT_DRIVER_NIC || |
71830d84 | 1010 | !netdev->u.nic.has_netdev) { |
af1a5c3e | 1011 | peer = net_hub_add_port(0, NULL, NULL); |
a2dbe135 | 1012 | } |
4ef0defb | 1013 | } |
6687b79d | 1014 | |
831734cc MA |
1015 | nc = qemu_find_netdev(netdev->id); |
1016 | if (nc) { | |
1017 | error_setg(errp, "Duplicate ID '%s'", netdev->id); | |
1018 | return -1; | |
1019 | } | |
1020 | ||
9d903f30 | 1021 | if (net_client_init_fun[netdev->type](netdev, netdev->id, peer, errp) < 0) { |
4ef0defb SH |
1022 | /* FIXME drop when all init functions store an Error */ |
1023 | if (errp && !*errp) { | |
f820af87 | 1024 | error_setg(errp, "Device '%s' could not be initialized", |
977c736f | 1025 | NetClientDriver_str(netdev->type)); |
f6b134ac | 1026 | } |
4ef0defb | 1027 | return -1; |
f6b134ac | 1028 | } |
08712fcb EB |
1029 | |
1030 | if (is_netdev) { | |
08712fcb EB |
1031 | nc = qemu_find_netdev(netdev->id); |
1032 | assert(nc); | |
1033 | nc->is_netdev = true; | |
1034 | } | |
1035 | ||
6687b79d LE |
1036 | return 0; |
1037 | } | |
1038 | ||
ad6f932f | 1039 | void show_netdevs(void) |
547203ea TH |
1040 | { |
1041 | int idx; | |
1042 | const char *available_netdevs[] = { | |
1043 | "socket", | |
1044 | "hubport", | |
1045 | "tap", | |
1046 | #ifdef CONFIG_SLIRP | |
1047 | "user", | |
1048 | #endif | |
1049 | #ifdef CONFIG_L2TPV3 | |
1050 | "l2tpv3", | |
1051 | #endif | |
1052 | #ifdef CONFIG_VDE | |
1053 | "vde", | |
1054 | #endif | |
1055 | #ifdef CONFIG_NET_BRIDGE | |
1056 | "bridge", | |
1057 | #endif | |
1058 | #ifdef CONFIG_NETMAP | |
1059 | "netmap", | |
1060 | #endif | |
1061 | #ifdef CONFIG_POSIX | |
1062 | "vhost-user", | |
1bc211a1 CL |
1063 | #endif |
1064 | #ifdef CONFIG_VHOST_VDPA | |
1065 | "vhost-vdpa", | |
547203ea TH |
1066 | #endif |
1067 | }; | |
1068 | ||
ad6f932f | 1069 | qemu_printf("Available netdev backend types:\n"); |
547203ea | 1070 | for (idx = 0; idx < ARRAY_SIZE(available_netdevs); idx++) { |
ad6f932f | 1071 | qemu_printf("%s\n", available_netdevs[idx]); |
547203ea TH |
1072 | } |
1073 | } | |
f6b134ac | 1074 | |
aa09a485 | 1075 | static int net_client_init(QemuOpts *opts, bool is_netdev, Error **errp) |
6687b79d | 1076 | { |
c1112b2d | 1077 | gchar **substrings = NULL; |
71830d84 | 1078 | Netdev *object = NULL; |
6687b79d | 1079 | int ret = -1; |
09204eac | 1080 | Visitor *v = opts_visitor_new(opts); |
f83c6e10 | 1081 | |
ad6f932f PB |
1082 | /* Parse convenience option format ip6-net=fec0::0[/64] */ |
1083 | const char *ip6_net = qemu_opt_get(opts, "ipv6-net"); | |
7aac531e | 1084 | |
ad6f932f PB |
1085 | if (ip6_net) { |
1086 | char *prefix_addr; | |
1087 | unsigned long prefix_len = 64; /* Default 64bit prefix length. */ | |
c1112b2d | 1088 | |
ad6f932f PB |
1089 | substrings = g_strsplit(ip6_net, "/", 2); |
1090 | if (!substrings || !substrings[0]) { | |
1091 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "ipv6-net", | |
1092 | "a valid IPv6 prefix"); | |
1093 | goto out; | |
1094 | } | |
c1112b2d | 1095 | |
ad6f932f | 1096 | prefix_addr = substrings[0]; |
7aac531e | 1097 | |
ad6f932f PB |
1098 | /* Handle user-specified prefix length. */ |
1099 | if (substrings[1] && | |
1100 | qemu_strtoul(substrings[1], NULL, 10, &prefix_len)) | |
1101 | { | |
1102 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, | |
1103 | "ipv6-prefixlen", "a number"); | |
1104 | goto out; | |
7aac531e | 1105 | } |
ad6f932f PB |
1106 | |
1107 | qemu_opt_set(opts, "ipv6-prefix", prefix_addr, &error_abort); | |
1108 | qemu_opt_set_number(opts, "ipv6-prefixlen", prefix_len, | |
1109 | &error_abort); | |
1110 | qemu_opt_unset(opts, "ipv6-net"); | |
7aac531e YB |
1111 | } |
1112 | ||
71830d84 TH |
1113 | /* Create an ID for -net if the user did not specify one */ |
1114 | if (!is_netdev && !qemu_opts_id(opts)) { | |
27eb3722 | 1115 | qemu_opts_set_id(opts, id_generate(ID_NET)); |
f83c6e10 MM |
1116 | } |
1117 | ||
14217038 MA |
1118 | if (visit_type_Netdev(v, NULL, &object, errp)) { |
1119 | ret = net_client_init1(object, is_netdev, errp); | |
6687b79d LE |
1120 | } |
1121 | ||
71830d84 | 1122 | qapi_free_Netdev(object); |
6687b79d | 1123 | |
21c520d0 | 1124 | out: |
c1112b2d | 1125 | g_strfreev(substrings); |
09204eac | 1126 | visit_free(v); |
6687b79d | 1127 | return ret; |
f83c6e10 MM |
1128 | } |
1129 | ||
928059a3 LC |
1130 | void netdev_add(QemuOpts *opts, Error **errp) |
1131 | { | |
0e55c381 | 1132 | net_client_init(opts, true, errp); |
928059a3 LC |
1133 | } |
1134 | ||
db2a380c | 1135 | void qmp_netdev_add(Netdev *netdev, Error **errp) |
ae82d324 | 1136 | { |
08712fcb | 1137 | net_client_init1(netdev, true, errp); |
ae82d324 MA |
1138 | } |
1139 | ||
5f964155 | 1140 | void qmp_netdev_del(const char *id, Error **errp) |
ae82d324 | 1141 | { |
35277d14 | 1142 | NetClientState *nc; |
831734cc | 1143 | QemuOpts *opts; |
ae82d324 | 1144 | |
35277d14 SH |
1145 | nc = qemu_find_netdev(id); |
1146 | if (!nc) { | |
75158ebb MA |
1147 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
1148 | "Device '%s' not found", id); | |
5f964155 | 1149 | return; |
ae82d324 | 1150 | } |
5f964155 | 1151 | |
08712fcb | 1152 | if (!nc->is_netdev) { |
645c9496 SH |
1153 | error_setg(errp, "Device '%s' is not a netdev", id); |
1154 | return; | |
1155 | } | |
1156 | ||
b20c6b9e | 1157 | qemu_del_net_client(nc); |
831734cc MA |
1158 | |
1159 | /* | |
1160 | * Wart: we need to delete the QemuOpts associated with netdevs | |
1161 | * created via CLI or HMP, to avoid bogus "Duplicate ID" errors in | |
1162 | * HMP netdev_add. | |
1163 | */ | |
1164 | opts = qemu_opts_find(qemu_find_opts("netdev"), id); | |
1165 | if (opts) { | |
1166 | qemu_opts_del(opts); | |
1167 | } | |
ae82d324 MA |
1168 | } |
1169 | ||
aa9156f4 HZ |
1170 | static void netfilter_print_info(Monitor *mon, NetFilterState *nf) |
1171 | { | |
1172 | char *str; | |
1173 | ObjectProperty *prop; | |
1174 | ObjectPropertyIterator iter; | |
3b098d56 | 1175 | Visitor *v; |
aa9156f4 HZ |
1176 | |
1177 | /* generate info str */ | |
1178 | object_property_iter_init(&iter, OBJECT(nf)); | |
1179 | while ((prop = object_property_iter_next(&iter))) { | |
1180 | if (!strcmp(prop->name, "type")) { | |
1181 | continue; | |
1182 | } | |
3b098d56 | 1183 | v = string_output_visitor_new(false, &str); |
5325cc34 | 1184 | object_property_get(OBJECT(nf), prop->name, v, NULL); |
3b098d56 EB |
1185 | visit_complete(v, &str); |
1186 | visit_free(v); | |
aa9156f4 HZ |
1187 | monitor_printf(mon, ",%s=%s", prop->name, str); |
1188 | g_free(str); | |
1189 | } | |
1190 | monitor_printf(mon, "\n"); | |
1191 | } | |
1192 | ||
1a859593 | 1193 | void print_net_client(Monitor *mon, NetClientState *nc) |
44e798d3 | 1194 | { |
a4960f52 YH |
1195 | NetFilterState *nf; |
1196 | ||
1ceef9f2 JW |
1197 | monitor_printf(mon, "%s: index=%d,type=%s,%s\n", nc->name, |
1198 | nc->queue_index, | |
977c736f | 1199 | NetClientDriver_str(nc->info->type), |
1ceef9f2 | 1200 | nc->info_str); |
a4960f52 YH |
1201 | if (!QTAILQ_EMPTY(&nc->filters)) { |
1202 | monitor_printf(mon, "filters:\n"); | |
1203 | } | |
1204 | QTAILQ_FOREACH(nf, &nc->filters, next) { | |
7a309cc9 MA |
1205 | monitor_printf(mon, " - %s: type=%s", |
1206 | object_get_canonical_path_component(OBJECT(nf)), | |
aa9156f4 HZ |
1207 | object_get_typename(OBJECT(nf))); |
1208 | netfilter_print_info(mon, nf); | |
a4960f52 | 1209 | } |
44e798d3 JK |
1210 | } |
1211 | ||
b1be4280 AK |
1212 | RxFilterInfoList *qmp_query_rx_filter(bool has_name, const char *name, |
1213 | Error **errp) | |
1214 | { | |
1215 | NetClientState *nc; | |
95b3a8c8 | 1216 | RxFilterInfoList *filter_list = NULL, **tail = &filter_list; |
b1be4280 AK |
1217 | |
1218 | QTAILQ_FOREACH(nc, &net_clients, next) { | |
b1be4280 AK |
1219 | RxFilterInfo *info; |
1220 | ||
1221 | if (has_name && strcmp(nc->name, name) != 0) { | |
1222 | continue; | |
1223 | } | |
1224 | ||
1225 | /* only query rx-filter information of NIC */ | |
f394b2e2 | 1226 | if (nc->info->type != NET_CLIENT_DRIVER_NIC) { |
b1be4280 AK |
1227 | if (has_name) { |
1228 | error_setg(errp, "net client(%s) isn't a NIC", name); | |
e9d635ea | 1229 | assert(!filter_list); |
9083da1d | 1230 | return NULL; |
b1be4280 AK |
1231 | } |
1232 | continue; | |
1233 | } | |
1234 | ||
5320c2ca VY |
1235 | /* only query information on queue 0 since the info is per nic, |
1236 | * not per queue | |
1237 | */ | |
1238 | if (nc->queue_index != 0) | |
1239 | continue; | |
1240 | ||
b1be4280 AK |
1241 | if (nc->info->query_rx_filter) { |
1242 | info = nc->info->query_rx_filter(nc); | |
95b3a8c8 | 1243 | QAPI_LIST_APPEND(tail, info); |
b1be4280 AK |
1244 | } else if (has_name) { |
1245 | error_setg(errp, "net client(%s) doesn't support" | |
1246 | " rx-filter querying", name); | |
e9d635ea | 1247 | assert(!filter_list); |
9083da1d | 1248 | return NULL; |
b1be4280 | 1249 | } |
638fb141 MA |
1250 | |
1251 | if (has_name) { | |
1252 | break; | |
1253 | } | |
b1be4280 AK |
1254 | } |
1255 | ||
9083da1d | 1256 | if (filter_list == NULL && has_name) { |
b1be4280 AK |
1257 | error_setg(errp, "invalid net client name: %s", name); |
1258 | } | |
1259 | ||
1260 | return filter_list; | |
1261 | } | |
1262 | ||
1ce6be24 | 1263 | void hmp_info_network(Monitor *mon, const QDict *qdict) |
63a01ef8 | 1264 | { |
35277d14 | 1265 | NetClientState *nc, *peer; |
f394b2e2 | 1266 | NetClientDriver type; |
63a01ef8 | 1267 | |
1a859593 ZYW |
1268 | net_hub_info(mon); |
1269 | ||
35277d14 SH |
1270 | QTAILQ_FOREACH(nc, &net_clients, next) { |
1271 | peer = nc->peer; | |
1272 | type = nc->info->type; | |
5610c3aa | 1273 | |
1a859593 ZYW |
1274 | /* Skip if already printed in hub info */ |
1275 | if (net_hub_id_for_client(nc, NULL) == 0) { | |
1276 | continue; | |
5610c3aa | 1277 | } |
1a859593 | 1278 | |
f394b2e2 | 1279 | if (!peer || type == NET_CLIENT_DRIVER_NIC) { |
35277d14 | 1280 | print_net_client(mon, nc); |
19061e63 | 1281 | } /* else it's a netdev connected to a NIC, printed with the NIC */ |
f394b2e2 | 1282 | if (peer && type == NET_CLIENT_DRIVER_NIC) { |
1a859593 | 1283 | monitor_printf(mon, " \\ "); |
44e798d3 | 1284 | print_net_client(mon, peer); |
a0104e0e | 1285 | } |
a0104e0e | 1286 | } |
63a01ef8 AL |
1287 | } |
1288 | ||
5fbba3d6 ZC |
1289 | void colo_notify_filters_event(int event, Error **errp) |
1290 | { | |
1291 | NetClientState *nc; | |
1292 | NetFilterState *nf; | |
1293 | NetFilterClass *nfc = NULL; | |
1294 | Error *local_err = NULL; | |
1295 | ||
1296 | QTAILQ_FOREACH(nc, &net_clients, next) { | |
1297 | QTAILQ_FOREACH(nf, &nc->filters, next) { | |
1298 | nfc = NETFILTER_GET_CLASS(OBJECT(nf)); | |
1299 | nfc->handle_event(nf, event, &local_err); | |
1300 | if (local_err) { | |
1301 | error_propagate(errp, local_err); | |
1302 | return; | |
1303 | } | |
1304 | } | |
1305 | } | |
1306 | } | |
1307 | ||
4b37156c | 1308 | void qmp_set_link(const char *name, bool up, Error **errp) |
436e5e53 | 1309 | { |
1ceef9f2 JW |
1310 | NetClientState *ncs[MAX_QUEUE_NUM]; |
1311 | NetClientState *nc; | |
1312 | int queues, i; | |
436e5e53 | 1313 | |
1ceef9f2 | 1314 | queues = qemu_find_net_clients_except(name, ncs, |
f394b2e2 | 1315 | NET_CLIENT_DRIVER__MAX, |
1ceef9f2 JW |
1316 | MAX_QUEUE_NUM); |
1317 | ||
1318 | if (queues == 0) { | |
75158ebb MA |
1319 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
1320 | "Device '%s' not found", name); | |
4b37156c | 1321 | return; |
436e5e53 | 1322 | } |
1ceef9f2 | 1323 | nc = ncs[0]; |
436e5e53 | 1324 | |
1ceef9f2 JW |
1325 | for (i = 0; i < queues; i++) { |
1326 | ncs[i]->link_down = !up; | |
1327 | } | |
436e5e53 | 1328 | |
35277d14 SH |
1329 | if (nc->info->link_status_changed) { |
1330 | nc->info->link_status_changed(nc); | |
665a3b07 | 1331 | } |
ab1cbe1c | 1332 | |
02d38fcb VY |
1333 | if (nc->peer) { |
1334 | /* Change peer link only if the peer is NIC and then notify peer. | |
1335 | * If the peer is a HUBPORT or a backend, we do not change the | |
1336 | * link status. | |
1337 | * | |
af1a5c3e | 1338 | * This behavior is compatible with qemu hubs where there could be |
02d38fcb VY |
1339 | * multiple clients that can still communicate with each other in |
1340 | * disconnected mode. For now maintain this compatibility. | |
1341 | */ | |
f394b2e2 | 1342 | if (nc->peer->info->type == NET_CLIENT_DRIVER_NIC) { |
02d38fcb VY |
1343 | for (i = 0; i < queues; i++) { |
1344 | ncs[i]->peer->link_down = !up; | |
1345 | } | |
1346 | } | |
1347 | if (nc->peer->info->link_status_changed) { | |
1348 | nc->peer->info->link_status_changed(nc->peer); | |
1349 | } | |
ab1cbe1c | 1350 | } |
436e5e53 AL |
1351 | } |
1352 | ||
ca77d85e MT |
1353 | static void net_vm_change_state_handler(void *opaque, int running, |
1354 | RunState state) | |
1355 | { | |
625de449 FZ |
1356 | NetClientState *nc; |
1357 | NetClientState *tmp; | |
ca77d85e | 1358 | |
625de449 FZ |
1359 | QTAILQ_FOREACH_SAFE(nc, &net_clients, next, tmp) { |
1360 | if (running) { | |
1361 | /* Flush queued packets and wake up backends. */ | |
1362 | if (nc->peer && qemu_can_send_packet(nc)) { | |
1363 | qemu_flush_queued_packets(nc->peer); | |
1364 | } | |
1365 | } else { | |
1366 | /* Complete all queued packets, to guarantee we don't modify | |
1367 | * state later when VM is not running. | |
1368 | */ | |
ca77d85e MT |
1369 | qemu_flush_or_purge_queued_packets(nc, true); |
1370 | } | |
1371 | } | |
1372 | } | |
1373 | ||
63a01ef8 AL |
1374 | void net_cleanup(void) |
1375 | { | |
1ceef9f2 | 1376 | NetClientState *nc; |
577c4af9 | 1377 | |
1ceef9f2 JW |
1378 | /* We may del multiple entries during qemu_del_net_client(), |
1379 | * so QTAILQ_FOREACH_SAFE() is also not safe here. | |
1380 | */ | |
1381 | while (!QTAILQ_EMPTY(&net_clients)) { | |
1382 | nc = QTAILQ_FIRST(&net_clients); | |
f394b2e2 | 1383 | if (nc->info->type == NET_CLIENT_DRIVER_NIC) { |
948ecf21 JW |
1384 | qemu_del_nic(qemu_get_nic(nc)); |
1385 | } else { | |
1386 | qemu_del_net_client(nc); | |
1387 | } | |
577c4af9 | 1388 | } |
ca77d85e MT |
1389 | |
1390 | qemu_del_vm_change_state_handler(net_change_state_entry); | |
63a01ef8 AL |
1391 | } |
1392 | ||
668680f7 | 1393 | void net_check_clients(void) |
63a01ef8 | 1394 | { |
35277d14 | 1395 | NetClientState *nc; |
48e2faf2 | 1396 | int i; |
63a01ef8 | 1397 | |
81017645 | 1398 | net_hub_check_clients(); |
ac60cc18 | 1399 | |
35277d14 SH |
1400 | QTAILQ_FOREACH(nc, &net_clients, next) { |
1401 | if (!nc->peer) { | |
8297be80 | 1402 | warn_report("%s %s has no peer", |
b62e39b4 AF |
1403 | nc->info->type == NET_CLIENT_DRIVER_NIC |
1404 | ? "nic" : "netdev", | |
1405 | nc->name); | |
efe32fdd MA |
1406 | } |
1407 | } | |
48e2faf2 PM |
1408 | |
1409 | /* Check that all NICs requested via -net nic actually got created. | |
1410 | * NICs created via -device don't need to be checked here because | |
1411 | * they are always instantiated. | |
1412 | */ | |
1413 | for (i = 0; i < MAX_NICS; i++) { | |
1414 | NICInfo *nd = &nd_table[i]; | |
1415 | if (nd->used && !nd->instantiated) { | |
8297be80 AF |
1416 | warn_report("requested NIC (%s, model %s) " |
1417 | "was not created (not supported by this machine?)", | |
1418 | nd->name ? nd->name : "anonymous", | |
1419 | nd->model ? nd->model : "unspecified"); | |
48e2faf2 PM |
1420 | } |
1421 | } | |
63a01ef8 | 1422 | } |
dc1c9fe8 | 1423 | |
28d0de7a | 1424 | static int net_init_client(void *dummy, QemuOpts *opts, Error **errp) |
dc1c9fe8 | 1425 | { |
34f708b0 | 1426 | return net_client_init(opts, false, errp); |
f6b134ac MM |
1427 | } |
1428 | ||
28d0de7a | 1429 | static int net_init_netdev(void *dummy, QemuOpts *opts, Error **errp) |
f6b134ac | 1430 | { |
ad6f932f PB |
1431 | const char *type = qemu_opt_get(opts, "type"); |
1432 | ||
1433 | if (type && is_help_option(type)) { | |
1434 | show_netdevs(); | |
1435 | exit(0); | |
1436 | } | |
34f708b0 | 1437 | return net_client_init(opts, true, errp); |
dc1c9fe8 | 1438 | } |
4559a1db | 1439 | |
78cd6f7b TH |
1440 | /* For the convenience "--nic" parameter */ |
1441 | static int net_param_nic(void *dummy, QemuOpts *opts, Error **errp) | |
1442 | { | |
1443 | char *mac, *nd_id; | |
1444 | int idx, ret; | |
1445 | NICInfo *ni; | |
1446 | const char *type; | |
1447 | ||
1448 | type = qemu_opt_get(opts, "type"); | |
1449 | if (type && g_str_equal(type, "none")) { | |
1450 | return 0; /* Nothing to do, default_net is cleared in vl.c */ | |
1451 | } | |
1452 | ||
1453 | idx = nic_get_free_idx(); | |
1454 | if (idx == -1 || nb_nics >= MAX_NICS) { | |
1455 | error_setg(errp, "no more on-board/default NIC slots available"); | |
4559a1db LC |
1456 | return -1; |
1457 | } | |
1458 | ||
78cd6f7b TH |
1459 | if (!type) { |
1460 | qemu_opt_set(opts, "type", "user", &error_abort); | |
1461 | } | |
1462 | ||
1463 | ni = &nd_table[idx]; | |
1464 | memset(ni, 0, sizeof(*ni)); | |
1465 | ni->model = qemu_opt_get_del(opts, "model"); | |
1466 | ||
1467 | /* Create an ID if the user did not specify one */ | |
1468 | nd_id = g_strdup(qemu_opts_id(opts)); | |
1469 | if (!nd_id) { | |
27eb3722 | 1470 | nd_id = id_generate(ID_NET); |
78cd6f7b TH |
1471 | qemu_opts_set_id(opts, nd_id); |
1472 | } | |
1473 | ||
1474 | /* Handle MAC address */ | |
1475 | mac = qemu_opt_get_del(opts, "mac"); | |
1476 | if (mac) { | |
1477 | ret = net_parse_macaddr(ni->macaddr.a, mac); | |
1478 | g_free(mac); | |
1479 | if (ret) { | |
1480 | error_setg(errp, "invalid syntax for ethernet address"); | |
9d946191 | 1481 | goto out; |
78cd6f7b TH |
1482 | } |
1483 | if (is_multicast_ether_addr(ni->macaddr.a)) { | |
1484 | error_setg(errp, "NIC cannot have multicast MAC address"); | |
9d946191 TH |
1485 | ret = -1; |
1486 | goto out; | |
78cd6f7b TH |
1487 | } |
1488 | } | |
1489 | qemu_macaddr_default_if_unset(&ni->macaddr); | |
1490 | ||
1491 | ret = net_client_init(opts, true, errp); | |
1492 | if (ret == 0) { | |
1493 | ni->netdev = qemu_find_netdev(nd_id); | |
1494 | ni->used = true; | |
1495 | nb_nics++; | |
1496 | } | |
1497 | ||
9d946191 | 1498 | out: |
78cd6f7b | 1499 | g_free(nd_id); |
4559a1db | 1500 | return ret; |
dc1c9fe8 MM |
1501 | } |
1502 | ||
34f708b0 | 1503 | int net_init_clients(Error **errp) |
dc1c9fe8 | 1504 | { |
ca77d85e MT |
1505 | net_change_state_entry = |
1506 | qemu_add_vm_change_state_handler(net_vm_change_state_handler, NULL); | |
1507 | ||
94878994 | 1508 | QTAILQ_INIT(&net_clients); |
5610c3aa | 1509 | |
28d0de7a | 1510 | if (qemu_opts_foreach(qemu_find_opts("netdev"), |
34f708b0 | 1511 | net_init_netdev, NULL, errp)) { |
f6b134ac | 1512 | return -1; |
a4c7367f | 1513 | } |
f6b134ac | 1514 | |
78cd6f7b TH |
1515 | if (qemu_opts_foreach(qemu_find_opts("nic"), net_param_nic, NULL, errp)) { |
1516 | return -1; | |
1517 | } | |
1518 | ||
34f708b0 | 1519 | if (qemu_opts_foreach(qemu_find_opts("net"), net_init_client, NULL, errp)) { |
dc1c9fe8 MM |
1520 | return -1; |
1521 | } | |
1522 | ||
dc1c9fe8 MM |
1523 | return 0; |
1524 | } | |
1525 | ||
7f161aae | 1526 | int net_client_parse(QemuOptsList *opts_list, const char *optarg) |
dc1c9fe8 | 1527 | { |
70b94331 | 1528 | if (!qemu_opts_parse_noisily(opts_list, optarg, true)) { |
dc1c9fe8 MM |
1529 | return -1; |
1530 | } | |
1531 | ||
1532 | return 0; | |
1533 | } | |
7fc8d918 JW |
1534 | |
1535 | /* From FreeBSD */ | |
1536 | /* XXX: optimize */ | |
eaba8f34 | 1537 | uint32_t net_crc32(const uint8_t *p, int len) |
7fc8d918 JW |
1538 | { |
1539 | uint32_t crc; | |
1540 | int carry, i, j; | |
1541 | uint8_t b; | |
1542 | ||
1543 | crc = 0xffffffff; | |
eaba8f34 MCA |
1544 | for (i = 0; i < len; i++) { |
1545 | b = *p++; | |
7fc8d918 JW |
1546 | for (j = 0; j < 8; j++) { |
1547 | carry = ((crc & 0x80000000L) ? 1 : 0) ^ (b & 0x01); | |
1548 | crc <<= 1; | |
1549 | b >>= 1; | |
1550 | if (carry) { | |
eaba8f34 | 1551 | crc = ((crc ^ POLYNOMIAL_BE) | carry); |
7fc8d918 JW |
1552 | } |
1553 | } | |
1554 | } | |
eaba8f34 MCA |
1555 | |
1556 | return crc; | |
1557 | } | |
1558 | ||
f1a7deb9 MCA |
1559 | uint32_t net_crc32_le(const uint8_t *p, int len) |
1560 | { | |
1561 | uint32_t crc; | |
1562 | int carry, i, j; | |
1563 | uint8_t b; | |
1564 | ||
1565 | crc = 0xffffffff; | |
1566 | for (i = 0; i < len; i++) { | |
1567 | b = *p++; | |
1568 | for (j = 0; j < 8; j++) { | |
1569 | carry = (crc & 0x1) ^ (b & 0x01); | |
1570 | crc >>= 1; | |
1571 | b >>= 1; | |
1572 | if (carry) { | |
1573 | crc ^= POLYNOMIAL_LE; | |
1574 | } | |
1575 | } | |
1576 | } | |
1577 | ||
1578 | return crc; | |
1579 | } | |
1580 | ||
4d454574 PB |
1581 | QemuOptsList qemu_netdev_opts = { |
1582 | .name = "netdev", | |
1583 | .implied_opt_name = "type", | |
1584 | .head = QTAILQ_HEAD_INITIALIZER(qemu_netdev_opts.head), | |
78cd6f7b TH |
1585 | .desc = { |
1586 | /* | |
1587 | * no elements => accept any params | |
1588 | * validation will happen later | |
1589 | */ | |
1590 | { /* end of list */ } | |
1591 | }, | |
1592 | }; | |
1593 | ||
1594 | QemuOptsList qemu_nic_opts = { | |
1595 | .name = "nic", | |
1596 | .implied_opt_name = "type", | |
1597 | .head = QTAILQ_HEAD_INITIALIZER(qemu_nic_opts.head), | |
4d454574 PB |
1598 | .desc = { |
1599 | /* | |
1600 | * no elements => accept any params | |
1601 | * validation will happen later | |
1602 | */ | |
1603 | { /* end of list */ } | |
1604 | }, | |
1605 | }; | |
1606 | ||
1607 | QemuOptsList qemu_net_opts = { | |
1608 | .name = "net", | |
1609 | .implied_opt_name = "type", | |
1610 | .head = QTAILQ_HEAD_INITIALIZER(qemu_net_opts.head), | |
1611 | .desc = { | |
1612 | /* | |
1613 | * no elements => accept any params | |
1614 | * validation will happen later | |
1615 | */ | |
1616 | { /* end of list */ } | |
1617 | }, | |
1618 | }; | |
16a3df40 ZC |
1619 | |
1620 | void net_socket_rs_init(SocketReadState *rs, | |
3cde5ea2 ZC |
1621 | SocketReadStateFinalize *finalize, |
1622 | bool vnet_hdr) | |
16a3df40 ZC |
1623 | { |
1624 | rs->state = 0; | |
3cde5ea2 | 1625 | rs->vnet_hdr = vnet_hdr; |
16a3df40 ZC |
1626 | rs->index = 0; |
1627 | rs->packet_len = 0; | |
3cde5ea2 | 1628 | rs->vnet_hdr_len = 0; |
16a3df40 ZC |
1629 | memset(rs->buf, 0, sizeof(rs->buf)); |
1630 | rs->finalize = finalize; | |
1631 | } | |
1632 | ||
1633 | /* | |
1634 | * Returns | |
e9e0a585 ZC |
1635 | * 0: success |
1636 | * -1: error occurs | |
16a3df40 ZC |
1637 | */ |
1638 | int net_fill_rstate(SocketReadState *rs, const uint8_t *buf, int size) | |
1639 | { | |
1640 | unsigned int l; | |
1641 | ||
1642 | while (size > 0) { | |
3cde5ea2 ZC |
1643 | /* Reassemble a packet from the network. |
1644 | * 0 = getting length. | |
1645 | * 1 = getting vnet header length. | |
1646 | * 2 = getting data. | |
1647 | */ | |
1648 | switch (rs->state) { | |
16a3df40 ZC |
1649 | case 0: |
1650 | l = 4 - rs->index; | |
1651 | if (l > size) { | |
1652 | l = size; | |
1653 | } | |
1654 | memcpy(rs->buf + rs->index, buf, l); | |
1655 | buf += l; | |
1656 | size -= l; | |
1657 | rs->index += l; | |
1658 | if (rs->index == 4) { | |
1659 | /* got length */ | |
1660 | rs->packet_len = ntohl(*(uint32_t *)rs->buf); | |
1661 | rs->index = 0; | |
3cde5ea2 ZC |
1662 | if (rs->vnet_hdr) { |
1663 | rs->state = 1; | |
1664 | } else { | |
1665 | rs->state = 2; | |
1666 | rs->vnet_hdr_len = 0; | |
1667 | } | |
16a3df40 ZC |
1668 | } |
1669 | break; | |
1670 | case 1: | |
3cde5ea2 ZC |
1671 | l = 4 - rs->index; |
1672 | if (l > size) { | |
1673 | l = size; | |
1674 | } | |
1675 | memcpy(rs->buf + rs->index, buf, l); | |
1676 | buf += l; | |
1677 | size -= l; | |
1678 | rs->index += l; | |
1679 | if (rs->index == 4) { | |
1680 | /* got vnet header length */ | |
1681 | rs->vnet_hdr_len = ntohl(*(uint32_t *)rs->buf); | |
1682 | rs->index = 0; | |
1683 | rs->state = 2; | |
1684 | } | |
1685 | break; | |
1686 | case 2: | |
16a3df40 ZC |
1687 | l = rs->packet_len - rs->index; |
1688 | if (l > size) { | |
1689 | l = size; | |
1690 | } | |
1691 | if (rs->index + l <= sizeof(rs->buf)) { | |
1692 | memcpy(rs->buf + rs->index, buf, l); | |
1693 | } else { | |
1694 | fprintf(stderr, "serious error: oversized packet received," | |
1695 | "connection terminated.\n"); | |
1696 | rs->index = rs->state = 0; | |
1697 | return -1; | |
1698 | } | |
1699 | ||
1700 | rs->index += l; | |
1701 | buf += l; | |
1702 | size -= l; | |
1703 | if (rs->index >= rs->packet_len) { | |
1704 | rs->index = 0; | |
1705 | rs->state = 0; | |
e79cd406 DB |
1706 | assert(rs->finalize); |
1707 | rs->finalize(rs); | |
16a3df40 ZC |
1708 | } |
1709 | break; | |
1710 | } | |
1711 | } | |
e9e0a585 ZC |
1712 | |
1713 | assert(size == 0); | |
16a3df40 ZC |
1714 | return 0; |
1715 | } |