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63a01ef8 AL |
1 | /* |
2 | * QEMU System Emulator | |
3 | * | |
4 | * Copyright (c) 2003-2008 Fabrice Bellard | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
e688df6b | 24 | |
2744d920 | 25 | #include "qemu/osdep.h" |
d40cdb10 | 26 | |
1422e32d | 27 | #include "net/net.h" |
fd9400b3 PB |
28 | #include "clients.h" |
29 | #include "hub.h" | |
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 | 37 | #include "qapi/qapi-commands-net.h" |
f9bb0c1f | 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" |
5166fe0a | 51 | #include "qemu/keyval.h" |
e688df6b | 52 | #include "qapi/error.h" |
6687b79d | 53 | #include "qapi/opts-visitor.h" |
54d31236 | 54 | #include "sysemu/runstate.h" |
0c7af1a7 | 55 | #include "net/colo-compare.h" |
fdccce45 | 56 | #include "net/filter.h" |
aa9156f4 | 57 | #include "qapi/string-output-visitor.h" |
f3eedcdd | 58 | #include "qapi/qobject-input-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; |
ae71d13d | 66 | NetClientStateList net_clients; |
63a01ef8 | 67 | |
f3eedcdd LV |
68 | typedef struct NetdevQueueEntry { |
69 | Netdev *nd; | |
70 | Location loc; | |
71 | QSIMPLEQ_ENTRY(NetdevQueueEntry) entry; | |
72 | } NetdevQueueEntry; | |
73 | ||
74 | typedef QSIMPLEQ_HEAD(, NetdevQueueEntry) NetdevQueue; | |
75 | ||
76 | static NetdevQueue nd_queue = QSIMPLEQ_HEAD_INITIALIZER(nd_queue); | |
77 | ||
63a01ef8 AL |
78 | /***********************************************************/ |
79 | /* network device redirectors */ | |
80 | ||
30e4226b LV |
81 | int convert_host_port(struct sockaddr_in *saddr, const char *host, |
82 | const char *port, Error **errp) | |
63a01ef8 | 83 | { |
63a01ef8 | 84 | struct hostent *he; |
30e4226b LV |
85 | const char *r; |
86 | long p; | |
63a01ef8 | 87 | |
59292384 PM |
88 | memset(saddr, 0, sizeof(*saddr)); |
89 | ||
63a01ef8 | 90 | saddr->sin_family = AF_INET; |
30e4226b | 91 | if (host[0] == '\0') { |
63a01ef8 AL |
92 | saddr->sin_addr.s_addr = 0; |
93 | } else { | |
30e4226b LV |
94 | if (qemu_isdigit(host[0])) { |
95 | if (!inet_aton(host, &saddr->sin_addr)) { | |
bcd4dfd6 | 96 | error_setg(errp, "host address '%s' is not a valid " |
30e4226b LV |
97 | "IPv4 address", host); |
98 | return -1; | |
bcd4dfd6 | 99 | } |
63a01ef8 | 100 | } else { |
30e4226b | 101 | he = gethostbyname(host); |
bcd4dfd6 | 102 | if (he == NULL) { |
30e4226b LV |
103 | error_setg(errp, "can't resolve host address '%s'", host); |
104 | return -1; | |
bcd4dfd6 | 105 | } |
63a01ef8 AL |
106 | saddr->sin_addr = *(struct in_addr *)he->h_addr; |
107 | } | |
108 | } | |
30e4226b LV |
109 | if (qemu_strtol(port, &r, 0, &p) != 0) { |
110 | error_setg(errp, "port number '%s' is invalid", port); | |
111 | return -1; | |
112 | } | |
113 | saddr->sin_port = htons(p); | |
114 | return 0; | |
115 | } | |
116 | ||
117 | int parse_host_port(struct sockaddr_in *saddr, const char *str, | |
118 | Error **errp) | |
119 | { | |
120 | gchar **substrings; | |
121 | int ret; | |
122 | ||
123 | substrings = g_strsplit(str, ":", 2); | |
124 | if (!substrings || !substrings[0] || !substrings[1]) { | |
125 | error_setg(errp, "host address '%s' doesn't contain ':' " | |
126 | "separating host from port", str); | |
add99347 SG |
127 | ret = -1; |
128 | goto out; | |
bcd4dfd6 | 129 | } |
30e4226b LV |
130 | |
131 | ret = convert_host_port(saddr, substrings[0], substrings[1], errp); | |
add99347 SG |
132 | |
133 | out: | |
134 | g_strfreev(substrings); | |
135 | return ret; | |
63a01ef8 AL |
136 | } |
137 | ||
890ee6ab SF |
138 | char *qemu_mac_strdup_printf(const uint8_t *macaddr) |
139 | { | |
140 | return g_strdup_printf("%.2x:%.2x:%.2x:%.2x:%.2x:%.2x", | |
141 | macaddr[0], macaddr[1], macaddr[2], | |
142 | macaddr[3], macaddr[4], macaddr[5]); | |
143 | } | |
144 | ||
53b85d95 LV |
145 | void qemu_set_info_str(NetClientState *nc, const char *fmt, ...) |
146 | { | |
147 | va_list ap; | |
148 | ||
149 | va_start(ap, fmt); | |
150 | vsnprintf(nc->info_str, sizeof(nc->info_str), fmt, ap); | |
151 | va_end(ap); | |
152 | } | |
153 | ||
35277d14 | 154 | void qemu_format_nic_info_str(NetClientState *nc, uint8_t macaddr[6]) |
7cb7434b | 155 | { |
53b85d95 LV |
156 | qemu_set_info_str(nc, "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x", |
157 | nc->model, macaddr[0], macaddr[1], macaddr[2], | |
158 | macaddr[3], macaddr[4], macaddr[5]); | |
7cb7434b AL |
159 | } |
160 | ||
2bc22a58 SZ |
161 | static int mac_table[256] = {0}; |
162 | ||
163 | static void qemu_macaddr_set_used(MACAddr *macaddr) | |
164 | { | |
165 | int index; | |
166 | ||
167 | for (index = 0x56; index < 0xFF; index++) { | |
168 | if (macaddr->a[5] == index) { | |
169 | mac_table[index]++; | |
170 | } | |
171 | } | |
172 | } | |
173 | ||
174 | static void qemu_macaddr_set_free(MACAddr *macaddr) | |
175 | { | |
176 | int index; | |
177 | static const MACAddr base = { .a = { 0x52, 0x54, 0x00, 0x12, 0x34, 0 } }; | |
178 | ||
179 | if (memcmp(macaddr->a, &base.a, (sizeof(base.a) - 1)) != 0) { | |
180 | return; | |
181 | } | |
182 | for (index = 0x56; index < 0xFF; index++) { | |
183 | if (macaddr->a[5] == index) { | |
184 | mac_table[index]--; | |
185 | } | |
186 | } | |
187 | } | |
188 | ||
189 | static int qemu_macaddr_get_free(void) | |
190 | { | |
191 | int index; | |
192 | ||
193 | for (index = 0x56; index < 0xFF; index++) { | |
194 | if (mac_table[index] == 0) { | |
195 | return index; | |
196 | } | |
197 | } | |
198 | ||
199 | return -1; | |
200 | } | |
201 | ||
76d32cba GH |
202 | void qemu_macaddr_default_if_unset(MACAddr *macaddr) |
203 | { | |
76d32cba | 204 | static const MACAddr zero = { .a = { 0,0,0,0,0,0 } }; |
2bc22a58 SZ |
205 | static const MACAddr base = { .a = { 0x52, 0x54, 0x00, 0x12, 0x34, 0 } }; |
206 | ||
207 | if (memcmp(macaddr, &zero, sizeof(zero)) != 0) { | |
208 | if (memcmp(macaddr->a, &base.a, (sizeof(base.a) - 1)) != 0) { | |
209 | return; | |
210 | } else { | |
211 | qemu_macaddr_set_used(macaddr); | |
212 | return; | |
213 | } | |
214 | } | |
76d32cba | 215 | |
76d32cba GH |
216 | macaddr->a[0] = 0x52; |
217 | macaddr->a[1] = 0x54; | |
218 | macaddr->a[2] = 0x00; | |
219 | macaddr->a[3] = 0x12; | |
220 | macaddr->a[4] = 0x34; | |
2bc22a58 SZ |
221 | macaddr->a[5] = qemu_macaddr_get_free(); |
222 | qemu_macaddr_set_used(macaddr); | |
76d32cba GH |
223 | } |
224 | ||
d33d93b2 SH |
225 | /** |
226 | * Generate a name for net client | |
227 | * | |
c963530a | 228 | * Only net clients created with the legacy -net option and NICs need this. |
d33d93b2 | 229 | */ |
35277d14 | 230 | static char *assign_name(NetClientState *nc1, const char *model) |
676cff29 | 231 | { |
35277d14 | 232 | NetClientState *nc; |
676cff29 AL |
233 | int id = 0; |
234 | ||
35277d14 SH |
235 | QTAILQ_FOREACH(nc, &net_clients, next) { |
236 | if (nc == nc1) { | |
d33d93b2 | 237 | continue; |
5610c3aa | 238 | } |
c963530a | 239 | if (strcmp(nc->model, model) == 0) { |
53e51d85 MA |
240 | id++; |
241 | } | |
242 | } | |
243 | ||
4bf2c138 | 244 | return g_strdup_printf("%s.%d", model, id); |
676cff29 AL |
245 | } |
246 | ||
f7860455 JW |
247 | static void qemu_net_client_destructor(NetClientState *nc) |
248 | { | |
249 | g_free(nc); | |
250 | } | |
25c01bd1 JW |
251 | static ssize_t qemu_deliver_packet_iov(NetClientState *sender, |
252 | unsigned flags, | |
253 | const struct iovec *iov, | |
254 | int iovcnt, | |
255 | void *opaque); | |
f7860455 | 256 | |
18a1541a JW |
257 | static void qemu_net_client_setup(NetClientState *nc, |
258 | NetClientInfo *info, | |
259 | NetClientState *peer, | |
260 | const char *model, | |
f7860455 | 261 | const char *name, |
2f849dbd JW |
262 | NetClientDestructor *destructor, |
263 | bool is_datapath) | |
63a01ef8 | 264 | { |
35277d14 SH |
265 | nc->info = info; |
266 | nc->model = g_strdup(model); | |
45460d1a | 267 | if (name) { |
35277d14 | 268 | nc->name = g_strdup(name); |
45460d1a | 269 | } else { |
35277d14 | 270 | nc->name = assign_name(nc, model); |
45460d1a | 271 | } |
5610c3aa | 272 | |
ab5f3f84 SH |
273 | if (peer) { |
274 | assert(!peer->peer); | |
35277d14 SH |
275 | nc->peer = peer; |
276 | peer->peer = nc; | |
d80b9fc6 | 277 | } |
35277d14 | 278 | QTAILQ_INSERT_TAIL(&net_clients, nc, next); |
63a01ef8 | 279 | |
3e033a46 | 280 | nc->incoming_queue = qemu_new_net_queue(qemu_deliver_packet_iov, nc); |
f7860455 | 281 | nc->destructor = destructor; |
2f849dbd | 282 | nc->is_datapath = is_datapath; |
fdccce45 | 283 | QTAILQ_INIT(&nc->filters); |
18a1541a JW |
284 | } |
285 | ||
286 | NetClientState *qemu_new_net_client(NetClientInfo *info, | |
287 | NetClientState *peer, | |
288 | const char *model, | |
289 | const char *name) | |
290 | { | |
291 | NetClientState *nc; | |
292 | ||
293 | assert(info->size >= sizeof(NetClientState)); | |
294 | ||
295 | nc = g_malloc0(info->size); | |
f7860455 | 296 | qemu_net_client_setup(nc, info, peer, model, name, |
2f849dbd JW |
297 | qemu_net_client_destructor, true); |
298 | ||
299 | return nc; | |
300 | } | |
301 | ||
302 | NetClientState *qemu_new_net_control_client(NetClientInfo *info, | |
303 | NetClientState *peer, | |
304 | const char *model, | |
305 | const char *name) | |
306 | { | |
307 | NetClientState *nc; | |
308 | ||
309 | assert(info->size >= sizeof(NetClientState)); | |
310 | ||
311 | nc = g_malloc0(info->size); | |
312 | qemu_net_client_setup(nc, info, peer, model, name, | |
313 | qemu_net_client_destructor, false); | |
18a1541a | 314 | |
35277d14 | 315 | return nc; |
63a01ef8 AL |
316 | } |
317 | ||
ebef2c09 MM |
318 | NICState *qemu_new_nic(NetClientInfo *info, |
319 | NICConf *conf, | |
320 | const char *model, | |
321 | const char *name, | |
322 | void *opaque) | |
323 | { | |
1ceef9f2 | 324 | NetClientState **peers = conf->peers.ncs; |
ebef2c09 | 325 | NICState *nic; |
575a1c0e | 326 | int i, queues = MAX(1, conf->peers.queues); |
ebef2c09 | 327 | |
f394b2e2 | 328 | assert(info->type == NET_CLIENT_DRIVER_NIC); |
ebef2c09 MM |
329 | assert(info->size >= sizeof(NICState)); |
330 | ||
f6b26cf2 JW |
331 | nic = g_malloc0(info->size + sizeof(NetClientState) * queues); |
332 | nic->ncs = (void *)nic + info->size; | |
ebef2c09 MM |
333 | nic->conf = conf; |
334 | nic->opaque = opaque; | |
335 | ||
f6b26cf2 JW |
336 | for (i = 0; i < queues; i++) { |
337 | qemu_net_client_setup(&nic->ncs[i], info, peers[i], model, name, | |
2f849dbd | 338 | NULL, true); |
1ceef9f2 JW |
339 | nic->ncs[i].queue_index = i; |
340 | } | |
341 | ||
ebef2c09 MM |
342 | return nic; |
343 | } | |
344 | ||
1ceef9f2 JW |
345 | NetClientState *qemu_get_subqueue(NICState *nic, int queue_index) |
346 | { | |
f6b26cf2 | 347 | return nic->ncs + queue_index; |
1ceef9f2 JW |
348 | } |
349 | ||
b356f76d JW |
350 | NetClientState *qemu_get_queue(NICState *nic) |
351 | { | |
1ceef9f2 | 352 | return qemu_get_subqueue(nic, 0); |
b356f76d JW |
353 | } |
354 | ||
cc1f0f45 JW |
355 | NICState *qemu_get_nic(NetClientState *nc) |
356 | { | |
1ceef9f2 JW |
357 | NetClientState *nc0 = nc - nc->queue_index; |
358 | ||
f6b26cf2 | 359 | return (NICState *)((void *)nc0 - nc->info->size); |
cc1f0f45 JW |
360 | } |
361 | ||
362 | void *qemu_get_nic_opaque(NetClientState *nc) | |
363 | { | |
364 | NICState *nic = qemu_get_nic(nc); | |
365 | ||
366 | return nic->opaque; | |
367 | } | |
368 | ||
0165daae CL |
369 | NetClientState *qemu_get_peer(NetClientState *nc, int queue_index) |
370 | { | |
371 | assert(nc != NULL); | |
372 | NetClientState *ncs = nc + queue_index; | |
373 | return ncs->peer; | |
374 | } | |
375 | ||
b20c6b9e | 376 | static void qemu_cleanup_net_client(NetClientState *nc) |
63a01ef8 | 377 | { |
35277d14 | 378 | QTAILQ_REMOVE(&net_clients, nc, next); |
63a01ef8 | 379 | |
cc2a9043 AF |
380 | if (nc->info->cleanup) { |
381 | nc->info->cleanup(nc); | |
382 | } | |
a083a89d | 383 | } |
5610c3aa | 384 | |
b20c6b9e | 385 | static void qemu_free_net_client(NetClientState *nc) |
a083a89d | 386 | { |
067404be JK |
387 | if (nc->incoming_queue) { |
388 | qemu_del_net_queue(nc->incoming_queue); | |
a005d073 | 389 | } |
35277d14 SH |
390 | if (nc->peer) { |
391 | nc->peer->peer = NULL; | |
a083a89d | 392 | } |
35277d14 SH |
393 | g_free(nc->name); |
394 | g_free(nc->model); | |
f7860455 JW |
395 | if (nc->destructor) { |
396 | nc->destructor(nc); | |
397 | } | |
63a01ef8 AL |
398 | } |
399 | ||
b20c6b9e | 400 | void qemu_del_net_client(NetClientState *nc) |
a083a89d | 401 | { |
1ceef9f2 JW |
402 | NetClientState *ncs[MAX_QUEUE_NUM]; |
403 | int queues, i; | |
fdccce45 | 404 | NetFilterState *nf, *next; |
1ceef9f2 | 405 | |
f394b2e2 | 406 | assert(nc->info->type != NET_CLIENT_DRIVER_NIC); |
7fb43911 | 407 | |
1ceef9f2 JW |
408 | /* If the NetClientState belongs to a multiqueue backend, we will change all |
409 | * other NetClientStates also. | |
410 | */ | |
411 | queues = qemu_find_net_clients_except(nc->name, ncs, | |
f394b2e2 | 412 | NET_CLIENT_DRIVER_NIC, |
1ceef9f2 JW |
413 | MAX_QUEUE_NUM); |
414 | assert(queues != 0); | |
415 | ||
fdccce45 YH |
416 | QTAILQ_FOREACH_SAFE(nf, &nc->filters, next, next) { |
417 | object_unparent(OBJECT(nf)); | |
418 | } | |
419 | ||
a083a89d | 420 | /* If there is a peer NIC, delete and cleanup client, but do not free. */ |
f394b2e2 | 421 | if (nc->peer && nc->peer->info->type == NET_CLIENT_DRIVER_NIC) { |
cc1f0f45 | 422 | NICState *nic = qemu_get_nic(nc->peer); |
a083a89d MT |
423 | if (nic->peer_deleted) { |
424 | return; | |
425 | } | |
426 | nic->peer_deleted = true; | |
1ceef9f2 JW |
427 | |
428 | for (i = 0; i < queues; i++) { | |
429 | ncs[i]->peer->link_down = true; | |
430 | } | |
431 | ||
35277d14 SH |
432 | if (nc->peer->info->link_status_changed) { |
433 | nc->peer->info->link_status_changed(nc->peer); | |
a083a89d | 434 | } |
1ceef9f2 JW |
435 | |
436 | for (i = 0; i < queues; i++) { | |
437 | qemu_cleanup_net_client(ncs[i]); | |
438 | } | |
439 | ||
a083a89d MT |
440 | return; |
441 | } | |
442 | ||
1ceef9f2 JW |
443 | for (i = 0; i < queues; i++) { |
444 | qemu_cleanup_net_client(ncs[i]); | |
445 | qemu_free_net_client(ncs[i]); | |
446 | } | |
948ecf21 JW |
447 | } |
448 | ||
449 | void qemu_del_nic(NICState *nic) | |
450 | { | |
575a1c0e | 451 | int i, queues = MAX(nic->conf->peers.queues, 1); |
1ceef9f2 | 452 | |
2bc22a58 SZ |
453 | qemu_macaddr_set_free(&nic->conf->macaddr); |
454 | ||
d2abc563 YB |
455 | for (i = 0; i < queues; i++) { |
456 | NetClientState *nc = qemu_get_subqueue(nic, i); | |
457 | /* If this is a peer NIC and peer has already been deleted, free it now. */ | |
458 | if (nic->peer_deleted) { | |
459 | qemu_free_net_client(nc->peer); | |
460 | } else if (nc->peer) { | |
461 | /* if there are RX packets pending, complete them */ | |
462 | qemu_purge_queued_packets(nc->peer); | |
1a609520 JK |
463 | } |
464 | } | |
1a609520 | 465 | |
1ceef9f2 JW |
466 | for (i = queues - 1; i >= 0; i--) { |
467 | NetClientState *nc = qemu_get_subqueue(nic, i); | |
468 | ||
469 | qemu_cleanup_net_client(nc); | |
470 | qemu_free_net_client(nc); | |
471 | } | |
f6b26cf2 JW |
472 | |
473 | g_free(nic); | |
1a609520 JK |
474 | } |
475 | ||
57f9ef17 MM |
476 | void qemu_foreach_nic(qemu_nic_foreach func, void *opaque) |
477 | { | |
4e68f7a0 | 478 | NetClientState *nc; |
57f9ef17 | 479 | |
94878994 | 480 | QTAILQ_FOREACH(nc, &net_clients, next) { |
f394b2e2 | 481 | if (nc->info->type == NET_CLIENT_DRIVER_NIC) { |
1ceef9f2 JW |
482 | if (nc->queue_index == 0) { |
483 | func(qemu_get_nic(nc), opaque); | |
484 | } | |
57f9ef17 MM |
485 | } |
486 | } | |
57f9ef17 MM |
487 | } |
488 | ||
d6085e3a | 489 | bool qemu_has_ufo(NetClientState *nc) |
1f55ac45 | 490 | { |
d6085e3a | 491 | if (!nc || !nc->info->has_ufo) { |
1f55ac45 VM |
492 | return false; |
493 | } | |
494 | ||
d6085e3a | 495 | return nc->info->has_ufo(nc); |
1f55ac45 VM |
496 | } |
497 | ||
f03e0cf6 YB |
498 | bool qemu_has_uso(NetClientState *nc) |
499 | { | |
500 | if (!nc || !nc->info->has_uso) { | |
501 | return false; | |
502 | } | |
503 | ||
504 | return nc->info->has_uso(nc); | |
505 | } | |
506 | ||
d6085e3a | 507 | bool qemu_has_vnet_hdr(NetClientState *nc) |
1f55ac45 | 508 | { |
d6085e3a | 509 | if (!nc || !nc->info->has_vnet_hdr) { |
1f55ac45 VM |
510 | return false; |
511 | } | |
512 | ||
d6085e3a | 513 | return nc->info->has_vnet_hdr(nc); |
1f55ac45 VM |
514 | } |
515 | ||
d6085e3a | 516 | bool qemu_has_vnet_hdr_len(NetClientState *nc, int len) |
1f55ac45 | 517 | { |
d6085e3a | 518 | if (!nc || !nc->info->has_vnet_hdr_len) { |
1f55ac45 VM |
519 | return false; |
520 | } | |
521 | ||
d6085e3a | 522 | return nc->info->has_vnet_hdr_len(nc, len); |
1f55ac45 VM |
523 | } |
524 | ||
481c5232 AO |
525 | bool qemu_get_using_vnet_hdr(NetClientState *nc) |
526 | { | |
527 | if (!nc || !nc->info->get_using_vnet_hdr) { | |
528 | return false; | |
529 | } | |
530 | ||
531 | return nc->info->get_using_vnet_hdr(nc); | |
532 | } | |
533 | ||
d6085e3a | 534 | void qemu_using_vnet_hdr(NetClientState *nc, bool enable) |
1f55ac45 | 535 | { |
d6085e3a | 536 | if (!nc || !nc->info->using_vnet_hdr) { |
1f55ac45 VM |
537 | return; |
538 | } | |
539 | ||
d6085e3a | 540 | nc->info->using_vnet_hdr(nc, enable); |
1f55ac45 VM |
541 | } |
542 | ||
d6085e3a | 543 | void qemu_set_offload(NetClientState *nc, int csum, int tso4, int tso6, |
2ab0ec31 | 544 | int ecn, int ufo, int uso4, int uso6) |
1f55ac45 | 545 | { |
d6085e3a | 546 | if (!nc || !nc->info->set_offload) { |
1f55ac45 VM |
547 | return; |
548 | } | |
549 | ||
2ab0ec31 | 550 | nc->info->set_offload(nc, csum, tso4, tso6, ecn, ufo, uso4, uso6); |
1f55ac45 VM |
551 | } |
552 | ||
481c5232 AO |
553 | int qemu_get_vnet_hdr_len(NetClientState *nc) |
554 | { | |
555 | if (!nc || !nc->info->get_vnet_hdr_len) { | |
556 | return 0; | |
557 | } | |
558 | ||
559 | return nc->info->get_vnet_hdr_len(nc); | |
560 | } | |
561 | ||
d6085e3a | 562 | void qemu_set_vnet_hdr_len(NetClientState *nc, int len) |
1f55ac45 | 563 | { |
d6085e3a | 564 | if (!nc || !nc->info->set_vnet_hdr_len) { |
1f55ac45 VM |
565 | return; |
566 | } | |
567 | ||
d6b732e9 | 568 | nc->vnet_hdr_len = len; |
d6085e3a | 569 | nc->info->set_vnet_hdr_len(nc, len); |
1f55ac45 VM |
570 | } |
571 | ||
c80cd6bb GK |
572 | int qemu_set_vnet_le(NetClientState *nc, bool is_le) |
573 | { | |
e03b5686 | 574 | #if HOST_BIG_ENDIAN |
c80cd6bb GK |
575 | if (!nc || !nc->info->set_vnet_le) { |
576 | return -ENOSYS; | |
577 | } | |
578 | ||
579 | return nc->info->set_vnet_le(nc, is_le); | |
052bd52f MT |
580 | #else |
581 | return 0; | |
582 | #endif | |
c80cd6bb GK |
583 | } |
584 | ||
585 | int qemu_set_vnet_be(NetClientState *nc, bool is_be) | |
586 | { | |
e03b5686 | 587 | #if HOST_BIG_ENDIAN |
052bd52f MT |
588 | return 0; |
589 | #else | |
c80cd6bb GK |
590 | if (!nc || !nc->info->set_vnet_be) { |
591 | return -ENOSYS; | |
592 | } | |
593 | ||
594 | return nc->info->set_vnet_be(nc, is_be); | |
052bd52f | 595 | #endif |
c80cd6bb GK |
596 | } |
597 | ||
705df546 JW |
598 | int qemu_can_receive_packet(NetClientState *nc) |
599 | { | |
600 | if (nc->receive_disabled) { | |
601 | return 0; | |
602 | } else if (nc->info->can_receive && | |
603 | !nc->info->can_receive(nc)) { | |
604 | return 0; | |
605 | } | |
606 | return 1; | |
607 | } | |
608 | ||
4e68f7a0 | 609 | int qemu_can_send_packet(NetClientState *sender) |
63a01ef8 | 610 | { |
e1d64c08 HZ |
611 | int vm_running = runstate_is_running(); |
612 | ||
613 | if (!vm_running) { | |
614 | return 0; | |
615 | } | |
616 | ||
a005d073 | 617 | if (!sender->peer) { |
d80b9fc6 MM |
618 | return 1; |
619 | } | |
620 | ||
705df546 | 621 | return qemu_can_receive_packet(sender->peer); |
63a01ef8 AL |
622 | } |
623 | ||
e64c770d YH |
624 | static ssize_t filter_receive_iov(NetClientState *nc, |
625 | NetFilterDirection direction, | |
626 | NetClientState *sender, | |
627 | unsigned flags, | |
628 | const struct iovec *iov, | |
629 | int iovcnt, | |
630 | NetPacketSent *sent_cb) | |
631 | { | |
632 | ssize_t ret = 0; | |
633 | NetFilterState *nf = NULL; | |
634 | ||
25aaadf0 LZ |
635 | if (direction == NET_FILTER_DIRECTION_TX) { |
636 | QTAILQ_FOREACH(nf, &nc->filters, next) { | |
637 | ret = qemu_netfilter_receive(nf, direction, sender, flags, iov, | |
638 | iovcnt, sent_cb); | |
639 | if (ret) { | |
640 | return ret; | |
641 | } | |
642 | } | |
643 | } else { | |
eae3eb3e | 644 | QTAILQ_FOREACH_REVERSE(nf, &nc->filters, next) { |
25aaadf0 LZ |
645 | ret = qemu_netfilter_receive(nf, direction, sender, flags, iov, |
646 | iovcnt, sent_cb); | |
647 | if (ret) { | |
648 | return ret; | |
649 | } | |
e64c770d YH |
650 | } |
651 | } | |
652 | ||
653 | return ret; | |
654 | } | |
655 | ||
656 | static ssize_t filter_receive(NetClientState *nc, | |
657 | NetFilterDirection direction, | |
658 | NetClientState *sender, | |
659 | unsigned flags, | |
660 | const uint8_t *data, | |
661 | size_t size, | |
662 | NetPacketSent *sent_cb) | |
663 | { | |
664 | struct iovec iov = { | |
665 | .iov_base = (void *)data, | |
666 | .iov_len = size | |
667 | }; | |
668 | ||
669 | return filter_receive_iov(nc, direction, sender, flags, &iov, 1, sent_cb); | |
670 | } | |
671 | ||
35277d14 | 672 | void qemu_purge_queued_packets(NetClientState *nc) |
8cad5516 | 673 | { |
35277d14 | 674 | if (!nc->peer) { |
d80b9fc6 | 675 | return; |
9a6ecb30 | 676 | } |
d80b9fc6 | 677 | |
067404be | 678 | qemu_net_queue_purge(nc->peer->incoming_queue, nc); |
8cad5516 MM |
679 | } |
680 | ||
ca77d85e | 681 | void qemu_flush_or_purge_queued_packets(NetClientState *nc, bool purge) |
e94667b9 | 682 | { |
35277d14 | 683 | nc->receive_disabled = 0; |
9a6ecb30 | 684 | |
f394b2e2 | 685 | if (nc->peer && nc->peer->info->type == NET_CLIENT_DRIVER_HUBPORT) { |
199ee608 LR |
686 | if (net_hub_flush(nc->peer)) { |
687 | qemu_notify_event(); | |
688 | } | |
199ee608 | 689 | } |
067404be | 690 | if (qemu_net_queue_flush(nc->incoming_queue)) { |
987a9b48 PB |
691 | /* We emptied the queue successfully, signal to the IO thread to repoll |
692 | * the file descriptor (for tap, for example). | |
693 | */ | |
694 | qemu_notify_event(); | |
ca77d85e MT |
695 | } else if (purge) { |
696 | /* Unable to empty the queue, purge remaining packets */ | |
5fe19fb8 | 697 | qemu_net_queue_purge(nc->incoming_queue, nc->peer); |
987a9b48 | 698 | } |
e94667b9 MM |
699 | } |
700 | ||
ca77d85e MT |
701 | void qemu_flush_queued_packets(NetClientState *nc) |
702 | { | |
703 | qemu_flush_or_purge_queued_packets(nc, false); | |
704 | } | |
705 | ||
4e68f7a0 | 706 | static ssize_t qemu_send_packet_async_with_flags(NetClientState *sender, |
ca77d175 MM |
707 | unsigned flags, |
708 | const uint8_t *buf, int size, | |
709 | NetPacketSent *sent_cb) | |
764a4d1d | 710 | { |
9a6ecb30 | 711 | NetQueue *queue; |
e64c770d | 712 | int ret; |
436e5e53 | 713 | |
63a01ef8 | 714 | #ifdef DEBUG_NET |
d80b9fc6 | 715 | printf("qemu_send_packet_async:\n"); |
b42581f5 | 716 | qemu_hexdump(stdout, "net", buf, size); |
63a01ef8 | 717 | #endif |
f3b6c7fc | 718 | |
a005d073 | 719 | if (sender->link_down || !sender->peer) { |
9a6ecb30 MM |
720 | return size; |
721 | } | |
722 | ||
e64c770d YH |
723 | /* Let filters handle the packet first */ |
724 | ret = filter_receive(sender, NET_FILTER_DIRECTION_TX, | |
725 | sender, flags, buf, size, sent_cb); | |
726 | if (ret) { | |
727 | return ret; | |
728 | } | |
729 | ||
730 | ret = filter_receive(sender->peer, NET_FILTER_DIRECTION_RX, | |
731 | sender, flags, buf, size, sent_cb); | |
732 | if (ret) { | |
733 | return ret; | |
734 | } | |
735 | ||
067404be | 736 | queue = sender->peer->incoming_queue; |
9a6ecb30 | 737 | |
ca77d175 MM |
738 | return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb); |
739 | } | |
740 | ||
4e68f7a0 | 741 | ssize_t qemu_send_packet_async(NetClientState *sender, |
ca77d175 MM |
742 | const uint8_t *buf, int size, |
743 | NetPacketSent *sent_cb) | |
744 | { | |
745 | return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE, | |
746 | buf, size, sent_cb); | |
f3b6c7fc MM |
747 | } |
748 | ||
625a526b | 749 | ssize_t qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size) |
f3b6c7fc | 750 | { |
625a526b | 751 | return qemu_send_packet_async(nc, buf, size, NULL); |
63a01ef8 AL |
752 | } |
753 | ||
705df546 JW |
754 | ssize_t qemu_receive_packet(NetClientState *nc, const uint8_t *buf, int size) |
755 | { | |
756 | if (!qemu_can_receive_packet(nc)) { | |
757 | return 0; | |
758 | } | |
759 | ||
760 | return qemu_net_queue_receive(nc->incoming_queue, buf, size); | |
761 | } | |
762 | ||
763 | ssize_t qemu_receive_packet_iov(NetClientState *nc, const struct iovec *iov, | |
764 | int iovcnt) | |
765 | { | |
766 | if (!qemu_can_receive_packet(nc)) { | |
767 | return 0; | |
768 | } | |
769 | ||
770 | return qemu_net_queue_receive_iov(nc->incoming_queue, iov, iovcnt); | |
771 | } | |
772 | ||
35277d14 | 773 | ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size) |
ca77d175 | 774 | { |
35277d14 | 775 | return qemu_send_packet_async_with_flags(nc, QEMU_NET_PACKET_FLAG_RAW, |
ca77d175 MM |
776 | buf, size, NULL); |
777 | } | |
778 | ||
35277d14 | 779 | static ssize_t nc_sendv_compat(NetClientState *nc, const struct iovec *iov, |
fefe2a78 | 780 | int iovcnt, unsigned flags) |
fbe78f4f | 781 | { |
74044c8f | 782 | uint8_t *buf = NULL; |
fefe2a78 | 783 | uint8_t *buffer; |
ce053661 | 784 | size_t offset; |
74044c8f | 785 | ssize_t ret; |
fbe78f4f | 786 | |
fefe2a78 YH |
787 | if (iovcnt == 1) { |
788 | buffer = iov[0].iov_base; | |
789 | offset = iov[0].iov_len; | |
790 | } else { | |
47f9f158 PL |
791 | offset = iov_size(iov, iovcnt); |
792 | if (offset > NET_BUFSIZE) { | |
793 | return -1; | |
794 | } | |
795 | buf = g_malloc(offset); | |
fefe2a78 | 796 | buffer = buf; |
47f9f158 | 797 | offset = iov_to_buf(iov, iovcnt, 0, buf, offset); |
fefe2a78 | 798 | } |
fbe78f4f | 799 | |
fefe2a78 | 800 | if (flags & QEMU_NET_PACKET_FLAG_RAW && nc->info->receive_raw) { |
74044c8f | 801 | ret = nc->info->receive_raw(nc, buffer, offset); |
fefe2a78 | 802 | } else { |
74044c8f | 803 | ret = nc->info->receive(nc, buffer, offset); |
fefe2a78 | 804 | } |
74044c8f PD |
805 | |
806 | g_free(buf); | |
807 | return ret; | |
fbe78f4f AL |
808 | } |
809 | ||
25c01bd1 JW |
810 | static ssize_t qemu_deliver_packet_iov(NetClientState *sender, |
811 | unsigned flags, | |
812 | const struct iovec *iov, | |
813 | int iovcnt, | |
814 | void *opaque) | |
9a6ecb30 | 815 | { |
35277d14 | 816 | NetClientState *nc = opaque; |
c67f5dc1 | 817 | int ret; |
9a6ecb30 | 818 | |
1592a994 | 819 | |
35277d14 | 820 | if (nc->link_down) { |
25c01bd1 | 821 | return iov_size(iov, iovcnt); |
9a6ecb30 MM |
822 | } |
823 | ||
c67f5dc1 SH |
824 | if (nc->receive_disabled) { |
825 | return 0; | |
826 | } | |
827 | ||
ca1ee3d6 | 828 | if (nc->info->receive_iov && !(flags & QEMU_NET_PACKET_FLAG_RAW)) { |
c67f5dc1 | 829 | ret = nc->info->receive_iov(nc, iov, iovcnt); |
9a6ecb30 | 830 | } else { |
fefe2a78 | 831 | ret = nc_sendv_compat(nc, iov, iovcnt, flags); |
c67f5dc1 SH |
832 | } |
833 | ||
834 | if (ret == 0) { | |
835 | nc->receive_disabled = 1; | |
e94667b9 | 836 | } |
c67f5dc1 SH |
837 | |
838 | return ret; | |
e94667b9 MM |
839 | } |
840 | ||
4e68f7a0 | 841 | ssize_t qemu_sendv_packet_async(NetClientState *sender, |
f3b6c7fc MM |
842 | const struct iovec *iov, int iovcnt, |
843 | NetPacketSent *sent_cb) | |
e94667b9 | 844 | { |
9a6ecb30 | 845 | NetQueue *queue; |
25c01bd1 | 846 | size_t size = iov_size(iov, iovcnt); |
e64c770d | 847 | int ret; |
9a6ecb30 | 848 | |
25c01bd1 JW |
849 | if (size > NET_BUFSIZE) { |
850 | return size; | |
851 | } | |
852 | ||
a005d073 | 853 | if (sender->link_down || !sender->peer) { |
25c01bd1 | 854 | return size; |
e94667b9 MM |
855 | } |
856 | ||
e64c770d YH |
857 | /* Let filters handle the packet first */ |
858 | ret = filter_receive_iov(sender, NET_FILTER_DIRECTION_TX, sender, | |
859 | QEMU_NET_PACKET_FLAG_NONE, iov, iovcnt, sent_cb); | |
860 | if (ret) { | |
861 | return ret; | |
862 | } | |
863 | ||
864 | ret = filter_receive_iov(sender->peer, NET_FILTER_DIRECTION_RX, sender, | |
865 | QEMU_NET_PACKET_FLAG_NONE, iov, iovcnt, sent_cb); | |
866 | if (ret) { | |
867 | return ret; | |
868 | } | |
869 | ||
067404be | 870 | queue = sender->peer->incoming_queue; |
9a6ecb30 | 871 | |
c0b8e49c MM |
872 | return qemu_net_queue_send_iov(queue, sender, |
873 | QEMU_NET_PACKET_FLAG_NONE, | |
874 | iov, iovcnt, sent_cb); | |
fbe78f4f AL |
875 | } |
876 | ||
f3b6c7fc | 877 | ssize_t |
35277d14 | 878 | qemu_sendv_packet(NetClientState *nc, const struct iovec *iov, int iovcnt) |
f3b6c7fc | 879 | { |
35277d14 | 880 | return qemu_sendv_packet_async(nc, iov, iovcnt, NULL); |
63a01ef8 AL |
881 | } |
882 | ||
4e68f7a0 | 883 | NetClientState *qemu_find_netdev(const char *id) |
5869c4d5 | 884 | { |
35277d14 | 885 | NetClientState *nc; |
5869c4d5 | 886 | |
35277d14 | 887 | QTAILQ_FOREACH(nc, &net_clients, next) { |
f394b2e2 | 888 | if (nc->info->type == NET_CLIENT_DRIVER_NIC) |
85dde9a9 | 889 | continue; |
35277d14 SH |
890 | if (!strcmp(nc->name, id)) { |
891 | return nc; | |
5869c4d5 MM |
892 | } |
893 | } | |
894 | ||
895 | return NULL; | |
896 | } | |
897 | ||
6c51ae73 | 898 | int qemu_find_net_clients_except(const char *id, NetClientState **ncs, |
f394b2e2 | 899 | NetClientDriver type, int max) |
6c51ae73 JW |
900 | { |
901 | NetClientState *nc; | |
902 | int ret = 0; | |
903 | ||
904 | QTAILQ_FOREACH(nc, &net_clients, next) { | |
905 | if (nc->info->type == type) { | |
906 | continue; | |
907 | } | |
40d19394 | 908 | if (!id || !strcmp(nc->name, id)) { |
6c51ae73 JW |
909 | if (ret < max) { |
910 | ncs[ret] = nc; | |
911 | } | |
912 | ret++; | |
913 | } | |
914 | } | |
915 | ||
916 | return ret; | |
917 | } | |
918 | ||
7697079b AL |
919 | static int nic_get_free_idx(void) |
920 | { | |
921 | int index; | |
922 | ||
923 | for (index = 0; index < MAX_NICS; index++) | |
924 | if (!nd_table[index].used) | |
925 | return index; | |
926 | return -1; | |
927 | } | |
928 | ||
c6941b3b TH |
929 | GPtrArray *qemu_get_nic_models(const char *device_type) |
930 | { | |
931 | GPtrArray *nic_models = g_ptr_array_new(); | |
932 | GSList *list = object_class_get_list_sorted(device_type, false); | |
933 | ||
934 | while (list) { | |
935 | DeviceClass *dc = OBJECT_CLASS_CHECK(DeviceClass, list->data, | |
936 | TYPE_DEVICE); | |
937 | GSList *next; | |
938 | if (test_bit(DEVICE_CATEGORY_NETWORK, dc->categories) && | |
939 | dc->user_creatable) { | |
940 | const char *name = object_class_get_name(list->data); | |
941 | /* | |
942 | * A network device might also be something else than a NIC, see | |
943 | * e.g. the "rocker" device. Thus we have to look for the "netdev" | |
944 | * property, too. Unfortunately, some devices like virtio-net only | |
945 | * create this property during instance_init, so we have to create | |
946 | * a temporary instance here to be able to check it. | |
947 | */ | |
948 | Object *obj = object_new_with_class(OBJECT_CLASS(dc)); | |
949 | if (object_property_find(obj, "netdev")) { | |
950 | g_ptr_array_add(nic_models, (gpointer)name); | |
951 | } | |
952 | object_unref(obj); | |
953 | } | |
954 | next = list->next; | |
955 | g_slist_free_1(list); | |
956 | list = next; | |
957 | } | |
958 | g_ptr_array_add(nic_models, NULL); | |
959 | ||
960 | return nic_models; | |
961 | } | |
962 | ||
07caea31 MA |
963 | int qemu_show_nic_models(const char *arg, const char *const *models) |
964 | { | |
965 | int i; | |
966 | ||
c8057f95 | 967 | if (!arg || !is_help_option(arg)) { |
07caea31 | 968 | return 0; |
c8057f95 | 969 | } |
07caea31 | 970 | |
3b0cca8e | 971 | printf("Available NIC models:\n"); |
7b71e03a TH |
972 | for (i = 0 ; models[i]; i++) { |
973 | printf("%s\n", models[i]); | |
974 | } | |
07caea31 MA |
975 | return 1; |
976 | } | |
977 | ||
d07f22c5 AL |
978 | void qemu_check_nic_model(NICInfo *nd, const char *model) |
979 | { | |
980 | const char *models[2]; | |
981 | ||
982 | models[0] = model; | |
983 | models[1] = NULL; | |
984 | ||
07caea31 MA |
985 | if (qemu_show_nic_models(nd->model, models)) |
986 | exit(0); | |
987 | if (qemu_find_nic_model(nd, models, model) < 0) | |
988 | exit(1); | |
d07f22c5 AL |
989 | } |
990 | ||
07caea31 MA |
991 | int qemu_find_nic_model(NICInfo *nd, const char * const *models, |
992 | const char *default_model) | |
d07f22c5 | 993 | { |
07caea31 | 994 | int i; |
d07f22c5 AL |
995 | |
996 | if (!nd->model) | |
7267c094 | 997 | nd->model = g_strdup(default_model); |
d07f22c5 | 998 | |
07caea31 MA |
999 | for (i = 0 ; models[i]; i++) { |
1000 | if (strcmp(nd->model, models[i]) == 0) | |
1001 | return i; | |
d07f22c5 AL |
1002 | } |
1003 | ||
6daf194d | 1004 | error_report("Unsupported NIC model: %s", nd->model); |
07caea31 | 1005 | return -1; |
d07f22c5 AL |
1006 | } |
1007 | ||
cebea510 | 1008 | static int net_init_nic(const Netdev *netdev, const char *name, |
a30ecde6 | 1009 | NetClientState *peer, Error **errp) |
f83c6e10 MM |
1010 | { |
1011 | int idx; | |
1012 | NICInfo *nd; | |
2456f36f LE |
1013 | const NetLegacyNicOptions *nic; |
1014 | ||
f394b2e2 EB |
1015 | assert(netdev->type == NET_CLIENT_DRIVER_NIC); |
1016 | nic = &netdev->u.nic; | |
f83c6e10 MM |
1017 | |
1018 | idx = nic_get_free_idx(); | |
1019 | if (idx == -1 || nb_nics >= MAX_NICS) { | |
66308868 | 1020 | error_setg(errp, "too many NICs"); |
f83c6e10 MM |
1021 | return -1; |
1022 | } | |
1023 | ||
1024 | nd = &nd_table[idx]; | |
1025 | ||
1026 | memset(nd, 0, sizeof(*nd)); | |
1027 | ||
7480874a | 1028 | if (nic->netdev) { |
2456f36f | 1029 | nd->netdev = qemu_find_netdev(nic->netdev); |
5869c4d5 | 1030 | if (!nd->netdev) { |
66308868 | 1031 | error_setg(errp, "netdev '%s' not found", nic->netdev); |
5869c4d5 MM |
1032 | return -1; |
1033 | } | |
1034 | } else { | |
d33d93b2 SH |
1035 | assert(peer); |
1036 | nd->netdev = peer; | |
5869c4d5 | 1037 | } |
c64f50d1 | 1038 | nd->name = g_strdup(name); |
7480874a | 1039 | if (nic->model) { |
2456f36f | 1040 | nd->model = g_strdup(nic->model); |
f83c6e10 | 1041 | } |
7480874a | 1042 | if (nic->addr) { |
2456f36f | 1043 | nd->devaddr = g_strdup(nic->addr); |
f83c6e10 MM |
1044 | } |
1045 | ||
7480874a | 1046 | if (nic->macaddr && |
2456f36f | 1047 | net_parse_macaddr(nd->macaddr.a, nic->macaddr) < 0) { |
66308868 | 1048 | error_setg(errp, "invalid syntax for ethernet address"); |
f83c6e10 MM |
1049 | return -1; |
1050 | } | |
7480874a | 1051 | if (nic->macaddr && |
d60b20cf | 1052 | is_multicast_ether_addr(nd->macaddr.a)) { |
66308868 MA |
1053 | error_setg(errp, |
1054 | "NIC cannot have multicast MAC address (odd 1st byte)"); | |
d60b20cf DK |
1055 | return -1; |
1056 | } | |
6eed1856 | 1057 | qemu_macaddr_default_if_unset(&nd->macaddr); |
f83c6e10 | 1058 | |
2456f36f LE |
1059 | if (nic->has_vectors) { |
1060 | if (nic->vectors > 0x7ffffff) { | |
66308868 | 1061 | error_setg(errp, "invalid # of vectors: %"PRIu32, nic->vectors); |
2456f36f LE |
1062 | return -1; |
1063 | } | |
1064 | nd->nvectors = nic->vectors; | |
1065 | } else { | |
1066 | nd->nvectors = DEV_NVECTORS_UNSPECIFIED; | |
f83c6e10 MM |
1067 | } |
1068 | ||
1069 | nd->used = 1; | |
f83c6e10 MM |
1070 | nb_nics++; |
1071 | ||
1072 | return idx; | |
1073 | } | |
1074 | ||
6687b79d | 1075 | |
f394b2e2 | 1076 | static int (* const net_client_init_fun[NET_CLIENT_DRIVER__MAX])( |
cebea510 | 1077 | const Netdev *netdev, |
6687b79d | 1078 | const char *name, |
a30ecde6 | 1079 | NetClientState *peer, Error **errp) = { |
f394b2e2 | 1080 | [NET_CLIENT_DRIVER_NIC] = net_init_nic, |
ec302ffd | 1081 | #ifdef CONFIG_SLIRP |
f394b2e2 | 1082 | [NET_CLIENT_DRIVER_USER] = net_init_slirp, |
2944e4ec | 1083 | #endif |
f394b2e2 EB |
1084 | [NET_CLIENT_DRIVER_TAP] = net_init_tap, |
1085 | [NET_CLIENT_DRIVER_SOCKET] = net_init_socket, | |
5166fe0a LV |
1086 | [NET_CLIENT_DRIVER_STREAM] = net_init_stream, |
1087 | [NET_CLIENT_DRIVER_DGRAM] = net_init_dgram, | |
dd51058d | 1088 | #ifdef CONFIG_VDE |
f394b2e2 | 1089 | [NET_CLIENT_DRIVER_VDE] = net_init_vde, |
58952137 VM |
1090 | #endif |
1091 | #ifdef CONFIG_NETMAP | |
f394b2e2 | 1092 | [NET_CLIENT_DRIVER_NETMAP] = net_init_netmap, |
dd51058d | 1093 | #endif |
cb039ef3 IM |
1094 | #ifdef CONFIG_AF_XDP |
1095 | [NET_CLIENT_DRIVER_AF_XDP] = net_init_af_xdp, | |
1096 | #endif | |
2944e4ec | 1097 | #ifdef CONFIG_NET_BRIDGE |
f394b2e2 | 1098 | [NET_CLIENT_DRIVER_BRIDGE] = net_init_bridge, |
6687b79d | 1099 | #endif |
f394b2e2 | 1100 | [NET_CLIENT_DRIVER_HUBPORT] = net_init_hubport, |
56f41de7 | 1101 | #ifdef CONFIG_VHOST_NET_USER |
f394b2e2 | 1102 | [NET_CLIENT_DRIVER_VHOST_USER] = net_init_vhost_user, |
03ce5744 | 1103 | #endif |
1e0a84ea CL |
1104 | #ifdef CONFIG_VHOST_NET_VDPA |
1105 | [NET_CLIENT_DRIVER_VHOST_VDPA] = net_init_vhost_vdpa, | |
1106 | #endif | |
015a33bd | 1107 | #ifdef CONFIG_L2TPV3 |
f394b2e2 | 1108 | [NET_CLIENT_DRIVER_L2TPV3] = net_init_l2tpv3, |
3fb69aa1 | 1109 | #endif |
81ad2964 VY |
1110 | #ifdef CONFIG_VMNET |
1111 | [NET_CLIENT_DRIVER_VMNET_HOST] = net_init_vmnet_host, | |
1112 | [NET_CLIENT_DRIVER_VMNET_SHARED] = net_init_vmnet_shared, | |
1113 | [NET_CLIENT_DRIVER_VMNET_BRIDGED] = net_init_vmnet_bridged, | |
1114 | #endif /* CONFIG_VMNET */ | |
f83c6e10 MM |
1115 | }; |
1116 | ||
6687b79d | 1117 | |
71830d84 | 1118 | static int net_client_init1(const Netdev *netdev, bool is_netdev, Error **errp) |
f83c6e10 | 1119 | { |
4ef0defb | 1120 | NetClientState *peer = NULL; |
831734cc | 1121 | NetClientState *nc; |
f83c6e10 | 1122 | |
5294e2c7 | 1123 | if (is_netdev) { |
857d2087 | 1124 | if (netdev->type == NET_CLIENT_DRIVER_NIC || |
f394b2e2 | 1125 | !net_client_init_fun[netdev->type]) { |
7d0e12af DB |
1126 | error_setg(errp, "network backend '%s' is not compiled into this binary", |
1127 | NetClientDriver_str(netdev->type)); | |
f6b134ac MM |
1128 | return -1; |
1129 | } | |
6687b79d | 1130 | } else { |
71830d84 | 1131 | if (netdev->type == NET_CLIENT_DRIVER_NONE) { |
d139e9a6 | 1132 | return 0; /* nothing to do */ |
1e81aba5 | 1133 | } |
7d0e12af DB |
1134 | if (netdev->type == NET_CLIENT_DRIVER_HUBPORT) { |
1135 | error_setg(errp, "network backend '%s' is only supported with -netdev/-nic", | |
1136 | NetClientDriver_str(netdev->type)); | |
1137 | return -1; | |
1138 | } | |
1139 | ||
1140 | if (!net_client_init_fun[netdev->type]) { | |
1141 | error_setg(errp, "network backend '%s' is not compiled into this binary", | |
1142 | NetClientDriver_str(netdev->type)); | |
d139e9a6 SH |
1143 | return -1; |
1144 | } | |
f6b134ac | 1145 | |
af1a5c3e | 1146 | /* Do not add to a hub if it's a nic with a netdev= parameter. */ |
f394b2e2 | 1147 | if (netdev->type != NET_CLIENT_DRIVER_NIC || |
7480874a | 1148 | !netdev->u.nic.netdev) { |
af1a5c3e | 1149 | peer = net_hub_add_port(0, NULL, NULL); |
a2dbe135 | 1150 | } |
4ef0defb | 1151 | } |
6687b79d | 1152 | |
831734cc MA |
1153 | nc = qemu_find_netdev(netdev->id); |
1154 | if (nc) { | |
1155 | error_setg(errp, "Duplicate ID '%s'", netdev->id); | |
1156 | return -1; | |
1157 | } | |
1158 | ||
9d903f30 | 1159 | if (net_client_init_fun[netdev->type](netdev, netdev->id, peer, errp) < 0) { |
4ef0defb SH |
1160 | /* FIXME drop when all init functions store an Error */ |
1161 | if (errp && !*errp) { | |
f820af87 | 1162 | error_setg(errp, "Device '%s' could not be initialized", |
977c736f | 1163 | NetClientDriver_str(netdev->type)); |
f6b134ac | 1164 | } |
4ef0defb | 1165 | return -1; |
f6b134ac | 1166 | } |
08712fcb EB |
1167 | |
1168 | if (is_netdev) { | |
08712fcb EB |
1169 | nc = qemu_find_netdev(netdev->id); |
1170 | assert(nc); | |
1171 | nc->is_netdev = true; | |
1172 | } | |
1173 | ||
6687b79d LE |
1174 | return 0; |
1175 | } | |
1176 | ||
ad6f932f | 1177 | void show_netdevs(void) |
547203ea TH |
1178 | { |
1179 | int idx; | |
1180 | const char *available_netdevs[] = { | |
1181 | "socket", | |
5166fe0a LV |
1182 | "stream", |
1183 | "dgram", | |
547203ea TH |
1184 | "hubport", |
1185 | "tap", | |
1186 | #ifdef CONFIG_SLIRP | |
1187 | "user", | |
1188 | #endif | |
1189 | #ifdef CONFIG_L2TPV3 | |
1190 | "l2tpv3", | |
1191 | #endif | |
1192 | #ifdef CONFIG_VDE | |
1193 | "vde", | |
1194 | #endif | |
1195 | #ifdef CONFIG_NET_BRIDGE | |
1196 | "bridge", | |
1197 | #endif | |
1198 | #ifdef CONFIG_NETMAP | |
1199 | "netmap", | |
1200 | #endif | |
cb039ef3 IM |
1201 | #ifdef CONFIG_AF_XDP |
1202 | "af-xdp", | |
1203 | #endif | |
547203ea TH |
1204 | #ifdef CONFIG_POSIX |
1205 | "vhost-user", | |
1bc211a1 CL |
1206 | #endif |
1207 | #ifdef CONFIG_VHOST_VDPA | |
1208 | "vhost-vdpa", | |
81ad2964 VY |
1209 | #endif |
1210 | #ifdef CONFIG_VMNET | |
1211 | "vmnet-host", | |
1212 | "vmnet-shared", | |
1213 | "vmnet-bridged", | |
547203ea TH |
1214 | #endif |
1215 | }; | |
1216 | ||
ad6f932f | 1217 | qemu_printf("Available netdev backend types:\n"); |
547203ea | 1218 | for (idx = 0; idx < ARRAY_SIZE(available_netdevs); idx++) { |
ad6f932f | 1219 | qemu_printf("%s\n", available_netdevs[idx]); |
547203ea TH |
1220 | } |
1221 | } | |
f6b134ac | 1222 | |
aa09a485 | 1223 | static int net_client_init(QemuOpts *opts, bool is_netdev, Error **errp) |
6687b79d | 1224 | { |
c1112b2d | 1225 | gchar **substrings = NULL; |
71830d84 | 1226 | Netdev *object = NULL; |
6687b79d | 1227 | int ret = -1; |
09204eac | 1228 | Visitor *v = opts_visitor_new(opts); |
f83c6e10 | 1229 | |
ad6f932f PB |
1230 | /* Parse convenience option format ip6-net=fec0::0[/64] */ |
1231 | const char *ip6_net = qemu_opt_get(opts, "ipv6-net"); | |
7aac531e | 1232 | |
ad6f932f PB |
1233 | if (ip6_net) { |
1234 | char *prefix_addr; | |
1235 | unsigned long prefix_len = 64; /* Default 64bit prefix length. */ | |
c1112b2d | 1236 | |
ad6f932f PB |
1237 | substrings = g_strsplit(ip6_net, "/", 2); |
1238 | if (!substrings || !substrings[0]) { | |
1239 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "ipv6-net", | |
1240 | "a valid IPv6 prefix"); | |
1241 | goto out; | |
1242 | } | |
c1112b2d | 1243 | |
ad6f932f | 1244 | prefix_addr = substrings[0]; |
7aac531e | 1245 | |
ad6f932f PB |
1246 | /* Handle user-specified prefix length. */ |
1247 | if (substrings[1] && | |
1248 | qemu_strtoul(substrings[1], NULL, 10, &prefix_len)) | |
1249 | { | |
1250 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, | |
1251 | "ipv6-prefixlen", "a number"); | |
1252 | goto out; | |
7aac531e | 1253 | } |
ad6f932f PB |
1254 | |
1255 | qemu_opt_set(opts, "ipv6-prefix", prefix_addr, &error_abort); | |
1256 | qemu_opt_set_number(opts, "ipv6-prefixlen", prefix_len, | |
1257 | &error_abort); | |
1258 | qemu_opt_unset(opts, "ipv6-net"); | |
7aac531e YB |
1259 | } |
1260 | ||
71830d84 TH |
1261 | /* Create an ID for -net if the user did not specify one */ |
1262 | if (!is_netdev && !qemu_opts_id(opts)) { | |
27eb3722 | 1263 | qemu_opts_set_id(opts, id_generate(ID_NET)); |
f83c6e10 MM |
1264 | } |
1265 | ||
14217038 MA |
1266 | if (visit_type_Netdev(v, NULL, &object, errp)) { |
1267 | ret = net_client_init1(object, is_netdev, errp); | |
6687b79d LE |
1268 | } |
1269 | ||
71830d84 | 1270 | qapi_free_Netdev(object); |
6687b79d | 1271 | |
21c520d0 | 1272 | out: |
c1112b2d | 1273 | g_strfreev(substrings); |
09204eac | 1274 | visit_free(v); |
6687b79d | 1275 | return ret; |
f83c6e10 MM |
1276 | } |
1277 | ||
928059a3 LC |
1278 | void netdev_add(QemuOpts *opts, Error **errp) |
1279 | { | |
0e55c381 | 1280 | net_client_init(opts, true, errp); |
928059a3 LC |
1281 | } |
1282 | ||
db2a380c | 1283 | void qmp_netdev_add(Netdev *netdev, Error **errp) |
ae82d324 | 1284 | { |
e73b4317 PB |
1285 | if (!id_wellformed(netdev->id)) { |
1286 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "id", "an identifier"); | |
1287 | return; | |
1288 | } | |
1289 | ||
08712fcb | 1290 | net_client_init1(netdev, true, errp); |
ae82d324 MA |
1291 | } |
1292 | ||
5f964155 | 1293 | void qmp_netdev_del(const char *id, Error **errp) |
ae82d324 | 1294 | { |
35277d14 | 1295 | NetClientState *nc; |
831734cc | 1296 | QemuOpts *opts; |
ae82d324 | 1297 | |
35277d14 SH |
1298 | nc = qemu_find_netdev(id); |
1299 | if (!nc) { | |
75158ebb MA |
1300 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
1301 | "Device '%s' not found", id); | |
5f964155 | 1302 | return; |
ae82d324 | 1303 | } |
5f964155 | 1304 | |
08712fcb | 1305 | if (!nc->is_netdev) { |
645c9496 SH |
1306 | error_setg(errp, "Device '%s' is not a netdev", id); |
1307 | return; | |
1308 | } | |
1309 | ||
b20c6b9e | 1310 | qemu_del_net_client(nc); |
831734cc MA |
1311 | |
1312 | /* | |
1313 | * Wart: we need to delete the QemuOpts associated with netdevs | |
1314 | * created via CLI or HMP, to avoid bogus "Duplicate ID" errors in | |
1315 | * HMP netdev_add. | |
1316 | */ | |
1317 | opts = qemu_opts_find(qemu_find_opts("netdev"), id); | |
1318 | if (opts) { | |
1319 | qemu_opts_del(opts); | |
1320 | } | |
ae82d324 MA |
1321 | } |
1322 | ||
aa9156f4 HZ |
1323 | static void netfilter_print_info(Monitor *mon, NetFilterState *nf) |
1324 | { | |
1325 | char *str; | |
1326 | ObjectProperty *prop; | |
1327 | ObjectPropertyIterator iter; | |
3b098d56 | 1328 | Visitor *v; |
aa9156f4 HZ |
1329 | |
1330 | /* generate info str */ | |
1331 | object_property_iter_init(&iter, OBJECT(nf)); | |
1332 | while ((prop = object_property_iter_next(&iter))) { | |
1333 | if (!strcmp(prop->name, "type")) { | |
1334 | continue; | |
1335 | } | |
3b098d56 | 1336 | v = string_output_visitor_new(false, &str); |
5325cc34 | 1337 | object_property_get(OBJECT(nf), prop->name, v, NULL); |
3b098d56 EB |
1338 | visit_complete(v, &str); |
1339 | visit_free(v); | |
aa9156f4 HZ |
1340 | monitor_printf(mon, ",%s=%s", prop->name, str); |
1341 | g_free(str); | |
1342 | } | |
1343 | monitor_printf(mon, "\n"); | |
1344 | } | |
1345 | ||
1a859593 | 1346 | void print_net_client(Monitor *mon, NetClientState *nc) |
44e798d3 | 1347 | { |
a4960f52 YH |
1348 | NetFilterState *nf; |
1349 | ||
1ceef9f2 JW |
1350 | monitor_printf(mon, "%s: index=%d,type=%s,%s\n", nc->name, |
1351 | nc->queue_index, | |
977c736f | 1352 | NetClientDriver_str(nc->info->type), |
56e6f594 | 1353 | nc->info_str); |
a4960f52 YH |
1354 | if (!QTAILQ_EMPTY(&nc->filters)) { |
1355 | monitor_printf(mon, "filters:\n"); | |
1356 | } | |
1357 | QTAILQ_FOREACH(nf, &nc->filters, next) { | |
7a309cc9 MA |
1358 | monitor_printf(mon, " - %s: type=%s", |
1359 | object_get_canonical_path_component(OBJECT(nf)), | |
aa9156f4 HZ |
1360 | object_get_typename(OBJECT(nf))); |
1361 | netfilter_print_info(mon, nf); | |
a4960f52 | 1362 | } |
44e798d3 JK |
1363 | } |
1364 | ||
7480874a | 1365 | RxFilterInfoList *qmp_query_rx_filter(const char *name, Error **errp) |
b1be4280 AK |
1366 | { |
1367 | NetClientState *nc; | |
95b3a8c8 | 1368 | RxFilterInfoList *filter_list = NULL, **tail = &filter_list; |
b1be4280 AK |
1369 | |
1370 | QTAILQ_FOREACH(nc, &net_clients, next) { | |
b1be4280 AK |
1371 | RxFilterInfo *info; |
1372 | ||
7480874a | 1373 | if (name && strcmp(nc->name, name) != 0) { |
b1be4280 AK |
1374 | continue; |
1375 | } | |
1376 | ||
1377 | /* only query rx-filter information of NIC */ | |
f394b2e2 | 1378 | if (nc->info->type != NET_CLIENT_DRIVER_NIC) { |
7480874a | 1379 | if (name) { |
b1be4280 | 1380 | error_setg(errp, "net client(%s) isn't a NIC", name); |
e9d635ea | 1381 | assert(!filter_list); |
9083da1d | 1382 | return NULL; |
b1be4280 AK |
1383 | } |
1384 | continue; | |
1385 | } | |
1386 | ||
5320c2ca VY |
1387 | /* only query information on queue 0 since the info is per nic, |
1388 | * not per queue | |
1389 | */ | |
1390 | if (nc->queue_index != 0) | |
1391 | continue; | |
1392 | ||
b1be4280 AK |
1393 | if (nc->info->query_rx_filter) { |
1394 | info = nc->info->query_rx_filter(nc); | |
95b3a8c8 | 1395 | QAPI_LIST_APPEND(tail, info); |
7480874a | 1396 | } else if (name) { |
b1be4280 AK |
1397 | error_setg(errp, "net client(%s) doesn't support" |
1398 | " rx-filter querying", name); | |
e9d635ea | 1399 | assert(!filter_list); |
9083da1d | 1400 | return NULL; |
b1be4280 | 1401 | } |
638fb141 | 1402 | |
7480874a | 1403 | if (name) { |
638fb141 MA |
1404 | break; |
1405 | } | |
b1be4280 AK |
1406 | } |
1407 | ||
7480874a | 1408 | if (filter_list == NULL && name) { |
b1be4280 AK |
1409 | error_setg(errp, "invalid net client name: %s", name); |
1410 | } | |
1411 | ||
1412 | return filter_list; | |
1413 | } | |
1414 | ||
5fbba3d6 ZC |
1415 | void colo_notify_filters_event(int event, Error **errp) |
1416 | { | |
1417 | NetClientState *nc; | |
1418 | NetFilterState *nf; | |
1419 | NetFilterClass *nfc = NULL; | |
1420 | Error *local_err = NULL; | |
1421 | ||
1422 | QTAILQ_FOREACH(nc, &net_clients, next) { | |
1423 | QTAILQ_FOREACH(nf, &nc->filters, next) { | |
1424 | nfc = NETFILTER_GET_CLASS(OBJECT(nf)); | |
1425 | nfc->handle_event(nf, event, &local_err); | |
1426 | if (local_err) { | |
1427 | error_propagate(errp, local_err); | |
1428 | return; | |
1429 | } | |
1430 | } | |
1431 | } | |
1432 | } | |
1433 | ||
4b37156c | 1434 | void qmp_set_link(const char *name, bool up, Error **errp) |
436e5e53 | 1435 | { |
1ceef9f2 JW |
1436 | NetClientState *ncs[MAX_QUEUE_NUM]; |
1437 | NetClientState *nc; | |
1438 | int queues, i; | |
436e5e53 | 1439 | |
1ceef9f2 | 1440 | queues = qemu_find_net_clients_except(name, ncs, |
f394b2e2 | 1441 | NET_CLIENT_DRIVER__MAX, |
1ceef9f2 JW |
1442 | MAX_QUEUE_NUM); |
1443 | ||
1444 | if (queues == 0) { | |
75158ebb MA |
1445 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
1446 | "Device '%s' not found", name); | |
4b37156c | 1447 | return; |
436e5e53 | 1448 | } |
1ceef9f2 | 1449 | nc = ncs[0]; |
436e5e53 | 1450 | |
1ceef9f2 JW |
1451 | for (i = 0; i < queues; i++) { |
1452 | ncs[i]->link_down = !up; | |
1453 | } | |
436e5e53 | 1454 | |
35277d14 SH |
1455 | if (nc->info->link_status_changed) { |
1456 | nc->info->link_status_changed(nc); | |
665a3b07 | 1457 | } |
ab1cbe1c | 1458 | |
02d38fcb VY |
1459 | if (nc->peer) { |
1460 | /* Change peer link only if the peer is NIC and then notify peer. | |
1461 | * If the peer is a HUBPORT or a backend, we do not change the | |
1462 | * link status. | |
1463 | * | |
af1a5c3e | 1464 | * This behavior is compatible with qemu hubs where there could be |
02d38fcb VY |
1465 | * multiple clients that can still communicate with each other in |
1466 | * disconnected mode. For now maintain this compatibility. | |
1467 | */ | |
f394b2e2 | 1468 | if (nc->peer->info->type == NET_CLIENT_DRIVER_NIC) { |
02d38fcb VY |
1469 | for (i = 0; i < queues; i++) { |
1470 | ncs[i]->peer->link_down = !up; | |
1471 | } | |
1472 | } | |
1473 | if (nc->peer->info->link_status_changed) { | |
1474 | nc->peer->info->link_status_changed(nc->peer); | |
1475 | } | |
ab1cbe1c | 1476 | } |
436e5e53 AL |
1477 | } |
1478 | ||
538f0497 | 1479 | static void net_vm_change_state_handler(void *opaque, bool running, |
ca77d85e MT |
1480 | RunState state) |
1481 | { | |
625de449 FZ |
1482 | NetClientState *nc; |
1483 | NetClientState *tmp; | |
ca77d85e | 1484 | |
625de449 FZ |
1485 | QTAILQ_FOREACH_SAFE(nc, &net_clients, next, tmp) { |
1486 | if (running) { | |
1487 | /* Flush queued packets and wake up backends. */ | |
1488 | if (nc->peer && qemu_can_send_packet(nc)) { | |
1489 | qemu_flush_queued_packets(nc->peer); | |
1490 | } | |
1491 | } else { | |
1492 | /* Complete all queued packets, to guarantee we don't modify | |
1493 | * state later when VM is not running. | |
1494 | */ | |
ca77d85e MT |
1495 | qemu_flush_or_purge_queued_packets(nc, true); |
1496 | } | |
1497 | } | |
1498 | } | |
1499 | ||
63a01ef8 AL |
1500 | void net_cleanup(void) |
1501 | { | |
1ceef9f2 | 1502 | NetClientState *nc; |
577c4af9 | 1503 | |
0c7af1a7 RL |
1504 | /*cleanup colo compare module for COLO*/ |
1505 | colo_compare_cleanup(); | |
1506 | ||
1ceef9f2 JW |
1507 | /* We may del multiple entries during qemu_del_net_client(), |
1508 | * so QTAILQ_FOREACH_SAFE() is also not safe here. | |
1509 | */ | |
1510 | while (!QTAILQ_EMPTY(&net_clients)) { | |
1511 | nc = QTAILQ_FIRST(&net_clients); | |
f394b2e2 | 1512 | if (nc->info->type == NET_CLIENT_DRIVER_NIC) { |
948ecf21 JW |
1513 | qemu_del_nic(qemu_get_nic(nc)); |
1514 | } else { | |
1515 | qemu_del_net_client(nc); | |
1516 | } | |
577c4af9 | 1517 | } |
ca77d85e MT |
1518 | |
1519 | qemu_del_vm_change_state_handler(net_change_state_entry); | |
63a01ef8 AL |
1520 | } |
1521 | ||
668680f7 | 1522 | void net_check_clients(void) |
63a01ef8 | 1523 | { |
35277d14 | 1524 | NetClientState *nc; |
48e2faf2 | 1525 | int i; |
63a01ef8 | 1526 | |
81017645 | 1527 | net_hub_check_clients(); |
ac60cc18 | 1528 | |
35277d14 SH |
1529 | QTAILQ_FOREACH(nc, &net_clients, next) { |
1530 | if (!nc->peer) { | |
8297be80 | 1531 | warn_report("%s %s has no peer", |
b62e39b4 AF |
1532 | nc->info->type == NET_CLIENT_DRIVER_NIC |
1533 | ? "nic" : "netdev", | |
1534 | nc->name); | |
efe32fdd MA |
1535 | } |
1536 | } | |
48e2faf2 PM |
1537 | |
1538 | /* Check that all NICs requested via -net nic actually got created. | |
1539 | * NICs created via -device don't need to be checked here because | |
1540 | * they are always instantiated. | |
1541 | */ | |
1542 | for (i = 0; i < MAX_NICS; i++) { | |
1543 | NICInfo *nd = &nd_table[i]; | |
1544 | if (nd->used && !nd->instantiated) { | |
8297be80 AF |
1545 | warn_report("requested NIC (%s, model %s) " |
1546 | "was not created (not supported by this machine?)", | |
1547 | nd->name ? nd->name : "anonymous", | |
1548 | nd->model ? nd->model : "unspecified"); | |
48e2faf2 PM |
1549 | } |
1550 | } | |
63a01ef8 | 1551 | } |
dc1c9fe8 | 1552 | |
28d0de7a | 1553 | static int net_init_client(void *dummy, QemuOpts *opts, Error **errp) |
dc1c9fe8 | 1554 | { |
34f708b0 | 1555 | return net_client_init(opts, false, errp); |
f6b134ac MM |
1556 | } |
1557 | ||
28d0de7a | 1558 | static int net_init_netdev(void *dummy, QemuOpts *opts, Error **errp) |
f6b134ac | 1559 | { |
ad6f932f PB |
1560 | const char *type = qemu_opt_get(opts, "type"); |
1561 | ||
1562 | if (type && is_help_option(type)) { | |
1563 | show_netdevs(); | |
1564 | exit(0); | |
1565 | } | |
34f708b0 | 1566 | return net_client_init(opts, true, errp); |
dc1c9fe8 | 1567 | } |
4559a1db | 1568 | |
78cd6f7b TH |
1569 | /* For the convenience "--nic" parameter */ |
1570 | static int net_param_nic(void *dummy, QemuOpts *opts, Error **errp) | |
1571 | { | |
1572 | char *mac, *nd_id; | |
1573 | int idx, ret; | |
1574 | NICInfo *ni; | |
1575 | const char *type; | |
1576 | ||
1577 | type = qemu_opt_get(opts, "type"); | |
27c81924 TH |
1578 | if (type) { |
1579 | if (g_str_equal(type, "none")) { | |
1580 | return 0; /* Nothing to do, default_net is cleared in vl.c */ | |
1581 | } | |
1582 | if (is_help_option(type)) { | |
1583 | GPtrArray *nic_models = qemu_get_nic_models(TYPE_DEVICE); | |
1584 | show_netdevs(); | |
1585 | printf("\n"); | |
1586 | qemu_show_nic_models(type, (const char **)nic_models->pdata); | |
1587 | g_ptr_array_free(nic_models, true); | |
1588 | exit(0); | |
1589 | } | |
78cd6f7b TH |
1590 | } |
1591 | ||
1592 | idx = nic_get_free_idx(); | |
1593 | if (idx == -1 || nb_nics >= MAX_NICS) { | |
1594 | error_setg(errp, "no more on-board/default NIC slots available"); | |
4559a1db LC |
1595 | return -1; |
1596 | } | |
1597 | ||
78cd6f7b TH |
1598 | if (!type) { |
1599 | qemu_opt_set(opts, "type", "user", &error_abort); | |
1600 | } | |
1601 | ||
1602 | ni = &nd_table[idx]; | |
1603 | memset(ni, 0, sizeof(*ni)); | |
1604 | ni->model = qemu_opt_get_del(opts, "model"); | |
1605 | ||
1606 | /* Create an ID if the user did not specify one */ | |
1607 | nd_id = g_strdup(qemu_opts_id(opts)); | |
1608 | if (!nd_id) { | |
27eb3722 | 1609 | nd_id = id_generate(ID_NET); |
78cd6f7b TH |
1610 | qemu_opts_set_id(opts, nd_id); |
1611 | } | |
1612 | ||
1613 | /* Handle MAC address */ | |
1614 | mac = qemu_opt_get_del(opts, "mac"); | |
1615 | if (mac) { | |
1616 | ret = net_parse_macaddr(ni->macaddr.a, mac); | |
1617 | g_free(mac); | |
1618 | if (ret) { | |
1619 | error_setg(errp, "invalid syntax for ethernet address"); | |
9d946191 | 1620 | goto out; |
78cd6f7b TH |
1621 | } |
1622 | if (is_multicast_ether_addr(ni->macaddr.a)) { | |
1623 | error_setg(errp, "NIC cannot have multicast MAC address"); | |
9d946191 TH |
1624 | ret = -1; |
1625 | goto out; | |
78cd6f7b TH |
1626 | } |
1627 | } | |
1628 | qemu_macaddr_default_if_unset(&ni->macaddr); | |
1629 | ||
1630 | ret = net_client_init(opts, true, errp); | |
1631 | if (ret == 0) { | |
1632 | ni->netdev = qemu_find_netdev(nd_id); | |
1633 | ni->used = true; | |
1634 | nb_nics++; | |
1635 | } | |
1636 | ||
9d946191 | 1637 | out: |
78cd6f7b | 1638 | g_free(nd_id); |
4559a1db | 1639 | return ret; |
dc1c9fe8 MM |
1640 | } |
1641 | ||
f3eedcdd LV |
1642 | static void netdev_init_modern(void) |
1643 | { | |
1644 | while (!QSIMPLEQ_EMPTY(&nd_queue)) { | |
1645 | NetdevQueueEntry *nd = QSIMPLEQ_FIRST(&nd_queue); | |
1646 | ||
1647 | QSIMPLEQ_REMOVE_HEAD(&nd_queue, entry); | |
1648 | loc_push_restore(&nd->loc); | |
1649 | net_client_init1(nd->nd, true, &error_fatal); | |
1650 | loc_pop(&nd->loc); | |
1651 | qapi_free_Netdev(nd->nd); | |
1652 | g_free(nd); | |
1653 | } | |
1654 | } | |
1655 | ||
d63ef17b | 1656 | void net_init_clients(void) |
dc1c9fe8 | 1657 | { |
ca77d85e MT |
1658 | net_change_state_entry = |
1659 | qemu_add_vm_change_state_handler(net_vm_change_state_handler, NULL); | |
1660 | ||
94878994 | 1661 | QTAILQ_INIT(&net_clients); |
5610c3aa | 1662 | |
f3eedcdd LV |
1663 | netdev_init_modern(); |
1664 | ||
d63ef17b LV |
1665 | qemu_opts_foreach(qemu_find_opts("netdev"), net_init_netdev, NULL, |
1666 | &error_fatal); | |
78cd6f7b | 1667 | |
d63ef17b LV |
1668 | qemu_opts_foreach(qemu_find_opts("nic"), net_param_nic, NULL, |
1669 | &error_fatal); | |
dc1c9fe8 | 1670 | |
d63ef17b LV |
1671 | qemu_opts_foreach(qemu_find_opts("net"), net_init_client, NULL, |
1672 | &error_fatal); | |
dc1c9fe8 MM |
1673 | } |
1674 | ||
f3eedcdd LV |
1675 | /* |
1676 | * Does this -netdev argument use modern rather than traditional syntax? | |
1677 | * Modern syntax is to be parsed with netdev_parse_modern(). | |
1678 | * Traditional syntax is to be parsed with net_client_parse(). | |
1679 | */ | |
73071f19 | 1680 | bool netdev_is_modern(const char *optstr) |
f3eedcdd | 1681 | { |
5166fe0a LV |
1682 | QemuOpts *opts; |
1683 | bool is_modern; | |
1684 | const char *type; | |
1685 | static QemuOptsList dummy_opts = { | |
1686 | .name = "netdev", | |
1687 | .implied_opt_name = "type", | |
1688 | .head = QTAILQ_HEAD_INITIALIZER(dummy_opts.head), | |
1689 | .desc = { { } }, | |
1690 | }; | |
1691 | ||
73071f19 | 1692 | if (optstr[0] == '{') { |
5166fe0a LV |
1693 | /* This is JSON, which means it's modern syntax */ |
1694 | return true; | |
1695 | } | |
1696 | ||
1697 | opts = qemu_opts_create(&dummy_opts, NULL, false, &error_abort); | |
73071f19 | 1698 | qemu_opts_do_parse(opts, optstr, dummy_opts.implied_opt_name, |
5166fe0a LV |
1699 | &error_abort); |
1700 | type = qemu_opt_get(opts, "type"); | |
1701 | is_modern = !g_strcmp0(type, "stream") || !g_strcmp0(type, "dgram"); | |
1702 | ||
1703 | qemu_opts_reset(&dummy_opts); | |
1704 | ||
1705 | return is_modern; | |
f3eedcdd LV |
1706 | } |
1707 | ||
1708 | /* | |
1709 | * netdev_parse_modern() uses modern, more expressive syntax than | |
1710 | * net_client_parse(), but supports only the -netdev option. | |
1711 | * netdev_parse_modern() appends to @nd_queue, whereas net_client_parse() | |
1712 | * appends to @qemu_netdev_opts. | |
1713 | */ | |
73071f19 | 1714 | void netdev_parse_modern(const char *optstr) |
f3eedcdd LV |
1715 | { |
1716 | Visitor *v; | |
1717 | NetdevQueueEntry *nd; | |
1718 | ||
73071f19 | 1719 | v = qobject_input_visitor_new_str(optstr, "type", &error_fatal); |
f3eedcdd LV |
1720 | nd = g_new(NetdevQueueEntry, 1); |
1721 | visit_type_Netdev(v, NULL, &nd->nd, &error_fatal); | |
1722 | visit_free(v); | |
1723 | loc_save(&nd->loc); | |
1724 | ||
1725 | QSIMPLEQ_INSERT_TAIL(&nd_queue, nd, entry); | |
1726 | } | |
1727 | ||
73071f19 | 1728 | void net_client_parse(QemuOptsList *opts_list, const char *optstr) |
dc1c9fe8 | 1729 | { |
73071f19 | 1730 | if (!qemu_opts_parse_noisily(opts_list, optstr, true)) { |
21fccb2c | 1731 | exit(1); |
dc1c9fe8 | 1732 | } |
dc1c9fe8 | 1733 | } |
7fc8d918 JW |
1734 | |
1735 | /* From FreeBSD */ | |
1736 | /* XXX: optimize */ | |
eaba8f34 | 1737 | uint32_t net_crc32(const uint8_t *p, int len) |
7fc8d918 JW |
1738 | { |
1739 | uint32_t crc; | |
1740 | int carry, i, j; | |
1741 | uint8_t b; | |
1742 | ||
1743 | crc = 0xffffffff; | |
eaba8f34 MCA |
1744 | for (i = 0; i < len; i++) { |
1745 | b = *p++; | |
7fc8d918 JW |
1746 | for (j = 0; j < 8; j++) { |
1747 | carry = ((crc & 0x80000000L) ? 1 : 0) ^ (b & 0x01); | |
1748 | crc <<= 1; | |
1749 | b >>= 1; | |
1750 | if (carry) { | |
eaba8f34 | 1751 | crc = ((crc ^ POLYNOMIAL_BE) | carry); |
7fc8d918 JW |
1752 | } |
1753 | } | |
1754 | } | |
eaba8f34 MCA |
1755 | |
1756 | return crc; | |
1757 | } | |
1758 | ||
f1a7deb9 MCA |
1759 | uint32_t net_crc32_le(const uint8_t *p, int len) |
1760 | { | |
1761 | uint32_t crc; | |
1762 | int carry, i, j; | |
1763 | uint8_t b; | |
1764 | ||
1765 | crc = 0xffffffff; | |
1766 | for (i = 0; i < len; i++) { | |
1767 | b = *p++; | |
1768 | for (j = 0; j < 8; j++) { | |
1769 | carry = (crc & 0x1) ^ (b & 0x01); | |
1770 | crc >>= 1; | |
1771 | b >>= 1; | |
1772 | if (carry) { | |
1773 | crc ^= POLYNOMIAL_LE; | |
1774 | } | |
1775 | } | |
1776 | } | |
1777 | ||
1778 | return crc; | |
1779 | } | |
1780 | ||
4d454574 PB |
1781 | QemuOptsList qemu_netdev_opts = { |
1782 | .name = "netdev", | |
1783 | .implied_opt_name = "type", | |
1784 | .head = QTAILQ_HEAD_INITIALIZER(qemu_netdev_opts.head), | |
78cd6f7b TH |
1785 | .desc = { |
1786 | /* | |
1787 | * no elements => accept any params | |
1788 | * validation will happen later | |
1789 | */ | |
1790 | { /* end of list */ } | |
1791 | }, | |
1792 | }; | |
1793 | ||
1794 | QemuOptsList qemu_nic_opts = { | |
1795 | .name = "nic", | |
1796 | .implied_opt_name = "type", | |
1797 | .head = QTAILQ_HEAD_INITIALIZER(qemu_nic_opts.head), | |
4d454574 PB |
1798 | .desc = { |
1799 | /* | |
1800 | * no elements => accept any params | |
1801 | * validation will happen later | |
1802 | */ | |
1803 | { /* end of list */ } | |
1804 | }, | |
1805 | }; | |
1806 | ||
1807 | QemuOptsList qemu_net_opts = { | |
1808 | .name = "net", | |
1809 | .implied_opt_name = "type", | |
1810 | .head = QTAILQ_HEAD_INITIALIZER(qemu_net_opts.head), | |
1811 | .desc = { | |
1812 | /* | |
1813 | * no elements => accept any params | |
1814 | * validation will happen later | |
1815 | */ | |
1816 | { /* end of list */ } | |
1817 | }, | |
1818 | }; | |
16a3df40 ZC |
1819 | |
1820 | void net_socket_rs_init(SocketReadState *rs, | |
3cde5ea2 ZC |
1821 | SocketReadStateFinalize *finalize, |
1822 | bool vnet_hdr) | |
16a3df40 ZC |
1823 | { |
1824 | rs->state = 0; | |
3cde5ea2 | 1825 | rs->vnet_hdr = vnet_hdr; |
16a3df40 ZC |
1826 | rs->index = 0; |
1827 | rs->packet_len = 0; | |
3cde5ea2 | 1828 | rs->vnet_hdr_len = 0; |
16a3df40 ZC |
1829 | memset(rs->buf, 0, sizeof(rs->buf)); |
1830 | rs->finalize = finalize; | |
1831 | } | |
1832 | ||
1833 | /* | |
1834 | * Returns | |
e9e0a585 ZC |
1835 | * 0: success |
1836 | * -1: error occurs | |
16a3df40 ZC |
1837 | */ |
1838 | int net_fill_rstate(SocketReadState *rs, const uint8_t *buf, int size) | |
1839 | { | |
1840 | unsigned int l; | |
1841 | ||
1842 | while (size > 0) { | |
3cde5ea2 ZC |
1843 | /* Reassemble a packet from the network. |
1844 | * 0 = getting length. | |
1845 | * 1 = getting vnet header length. | |
1846 | * 2 = getting data. | |
1847 | */ | |
1848 | switch (rs->state) { | |
16a3df40 ZC |
1849 | case 0: |
1850 | l = 4 - rs->index; | |
1851 | if (l > size) { | |
1852 | l = size; | |
1853 | } | |
1854 | memcpy(rs->buf + rs->index, buf, l); | |
1855 | buf += l; | |
1856 | size -= l; | |
1857 | rs->index += l; | |
1858 | if (rs->index == 4) { | |
1859 | /* got length */ | |
1860 | rs->packet_len = ntohl(*(uint32_t *)rs->buf); | |
1861 | rs->index = 0; | |
3cde5ea2 ZC |
1862 | if (rs->vnet_hdr) { |
1863 | rs->state = 1; | |
1864 | } else { | |
1865 | rs->state = 2; | |
1866 | rs->vnet_hdr_len = 0; | |
1867 | } | |
16a3df40 ZC |
1868 | } |
1869 | break; | |
1870 | case 1: | |
3cde5ea2 ZC |
1871 | l = 4 - rs->index; |
1872 | if (l > size) { | |
1873 | l = size; | |
1874 | } | |
1875 | memcpy(rs->buf + rs->index, buf, l); | |
1876 | buf += l; | |
1877 | size -= l; | |
1878 | rs->index += l; | |
1879 | if (rs->index == 4) { | |
1880 | /* got vnet header length */ | |
1881 | rs->vnet_hdr_len = ntohl(*(uint32_t *)rs->buf); | |
1882 | rs->index = 0; | |
1883 | rs->state = 2; | |
1884 | } | |
1885 | break; | |
1886 | case 2: | |
16a3df40 ZC |
1887 | l = rs->packet_len - rs->index; |
1888 | if (l > size) { | |
1889 | l = size; | |
1890 | } | |
1891 | if (rs->index + l <= sizeof(rs->buf)) { | |
1892 | memcpy(rs->buf + rs->index, buf, l); | |
1893 | } else { | |
1894 | fprintf(stderr, "serious error: oversized packet received," | |
1895 | "connection terminated.\n"); | |
1896 | rs->index = rs->state = 0; | |
1897 | return -1; | |
1898 | } | |
1899 | ||
1900 | rs->index += l; | |
1901 | buf += l; | |
1902 | size -= l; | |
1903 | if (rs->index >= rs->packet_len) { | |
1904 | rs->index = 0; | |
1905 | rs->state = 0; | |
e79cd406 DB |
1906 | assert(rs->finalize); |
1907 | rs->finalize(rs); | |
16a3df40 ZC |
1908 | } |
1909 | break; | |
1910 | } | |
1911 | } | |
e9e0a585 ZC |
1912 | |
1913 | assert(size == 0); | |
16a3df40 ZC |
1914 | return 0; |
1915 | } |