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Commit | Line | Data |
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63a01ef8 AL |
1 | /* |
2 | * QEMU System Emulator | |
3 | * | |
4 | * Copyright (c) 2003-2008 Fabrice Bellard | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
e688df6b | 24 | |
2744d920 | 25 | #include "qemu/osdep.h" |
d40cdb10 | 26 | |
1422e32d | 27 | #include "net/net.h" |
fd9400b3 PB |
28 | #include "clients.h" |
29 | #include "hub.h" | |
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, | |
7d0fefdf | 322 | MemReentrancyGuard *reentrancy_guard, |
ebef2c09 MM |
323 | void *opaque) |
324 | { | |
1ceef9f2 | 325 | NetClientState **peers = conf->peers.ncs; |
ebef2c09 | 326 | NICState *nic; |
575a1c0e | 327 | int i, queues = MAX(1, conf->peers.queues); |
ebef2c09 | 328 | |
f394b2e2 | 329 | assert(info->type == NET_CLIENT_DRIVER_NIC); |
ebef2c09 MM |
330 | assert(info->size >= sizeof(NICState)); |
331 | ||
f6b26cf2 JW |
332 | nic = g_malloc0(info->size + sizeof(NetClientState) * queues); |
333 | nic->ncs = (void *)nic + info->size; | |
ebef2c09 | 334 | nic->conf = conf; |
9050f976 | 335 | nic->reentrancy_guard = reentrancy_guard, |
ebef2c09 MM |
336 | nic->opaque = opaque; |
337 | ||
f6b26cf2 JW |
338 | for (i = 0; i < queues; i++) { |
339 | qemu_net_client_setup(&nic->ncs[i], info, peers[i], model, name, | |
2f849dbd | 340 | NULL, true); |
1ceef9f2 JW |
341 | nic->ncs[i].queue_index = i; |
342 | } | |
343 | ||
ebef2c09 MM |
344 | return nic; |
345 | } | |
346 | ||
1ceef9f2 JW |
347 | NetClientState *qemu_get_subqueue(NICState *nic, int queue_index) |
348 | { | |
f6b26cf2 | 349 | return nic->ncs + queue_index; |
1ceef9f2 JW |
350 | } |
351 | ||
b356f76d JW |
352 | NetClientState *qemu_get_queue(NICState *nic) |
353 | { | |
1ceef9f2 | 354 | return qemu_get_subqueue(nic, 0); |
b356f76d JW |
355 | } |
356 | ||
cc1f0f45 JW |
357 | NICState *qemu_get_nic(NetClientState *nc) |
358 | { | |
1ceef9f2 JW |
359 | NetClientState *nc0 = nc - nc->queue_index; |
360 | ||
f6b26cf2 | 361 | return (NICState *)((void *)nc0 - nc->info->size); |
cc1f0f45 JW |
362 | } |
363 | ||
364 | void *qemu_get_nic_opaque(NetClientState *nc) | |
365 | { | |
366 | NICState *nic = qemu_get_nic(nc); | |
367 | ||
368 | return nic->opaque; | |
369 | } | |
370 | ||
0165daae CL |
371 | NetClientState *qemu_get_peer(NetClientState *nc, int queue_index) |
372 | { | |
373 | assert(nc != NULL); | |
374 | NetClientState *ncs = nc + queue_index; | |
375 | return ncs->peer; | |
376 | } | |
377 | ||
b20c6b9e | 378 | static void qemu_cleanup_net_client(NetClientState *nc) |
63a01ef8 | 379 | { |
35277d14 | 380 | QTAILQ_REMOVE(&net_clients, nc, next); |
63a01ef8 | 381 | |
cc2a9043 AF |
382 | if (nc->info->cleanup) { |
383 | nc->info->cleanup(nc); | |
384 | } | |
a083a89d | 385 | } |
5610c3aa | 386 | |
b20c6b9e | 387 | static void qemu_free_net_client(NetClientState *nc) |
a083a89d | 388 | { |
067404be JK |
389 | if (nc->incoming_queue) { |
390 | qemu_del_net_queue(nc->incoming_queue); | |
a005d073 | 391 | } |
35277d14 SH |
392 | if (nc->peer) { |
393 | nc->peer->peer = NULL; | |
a083a89d | 394 | } |
35277d14 SH |
395 | g_free(nc->name); |
396 | g_free(nc->model); | |
f7860455 JW |
397 | if (nc->destructor) { |
398 | nc->destructor(nc); | |
399 | } | |
63a01ef8 AL |
400 | } |
401 | ||
b20c6b9e | 402 | void qemu_del_net_client(NetClientState *nc) |
a083a89d | 403 | { |
1ceef9f2 JW |
404 | NetClientState *ncs[MAX_QUEUE_NUM]; |
405 | int queues, i; | |
fdccce45 | 406 | NetFilterState *nf, *next; |
1ceef9f2 | 407 | |
f394b2e2 | 408 | assert(nc->info->type != NET_CLIENT_DRIVER_NIC); |
7fb43911 | 409 | |
1ceef9f2 JW |
410 | /* If the NetClientState belongs to a multiqueue backend, we will change all |
411 | * other NetClientStates also. | |
412 | */ | |
413 | queues = qemu_find_net_clients_except(nc->name, ncs, | |
f394b2e2 | 414 | NET_CLIENT_DRIVER_NIC, |
1ceef9f2 JW |
415 | MAX_QUEUE_NUM); |
416 | assert(queues != 0); | |
417 | ||
fdccce45 YH |
418 | QTAILQ_FOREACH_SAFE(nf, &nc->filters, next, next) { |
419 | object_unparent(OBJECT(nf)); | |
420 | } | |
421 | ||
a083a89d | 422 | /* If there is a peer NIC, delete and cleanup client, but do not free. */ |
f394b2e2 | 423 | if (nc->peer && nc->peer->info->type == NET_CLIENT_DRIVER_NIC) { |
cc1f0f45 | 424 | NICState *nic = qemu_get_nic(nc->peer); |
a083a89d MT |
425 | if (nic->peer_deleted) { |
426 | return; | |
427 | } | |
428 | nic->peer_deleted = true; | |
1ceef9f2 JW |
429 | |
430 | for (i = 0; i < queues; i++) { | |
431 | ncs[i]->peer->link_down = true; | |
432 | } | |
433 | ||
35277d14 SH |
434 | if (nc->peer->info->link_status_changed) { |
435 | nc->peer->info->link_status_changed(nc->peer); | |
a083a89d | 436 | } |
1ceef9f2 JW |
437 | |
438 | for (i = 0; i < queues; i++) { | |
439 | qemu_cleanup_net_client(ncs[i]); | |
440 | } | |
441 | ||
a083a89d MT |
442 | return; |
443 | } | |
444 | ||
1ceef9f2 JW |
445 | for (i = 0; i < queues; i++) { |
446 | qemu_cleanup_net_client(ncs[i]); | |
447 | qemu_free_net_client(ncs[i]); | |
448 | } | |
948ecf21 JW |
449 | } |
450 | ||
451 | void qemu_del_nic(NICState *nic) | |
452 | { | |
575a1c0e | 453 | int i, queues = MAX(nic->conf->peers.queues, 1); |
1ceef9f2 | 454 | |
2bc22a58 SZ |
455 | qemu_macaddr_set_free(&nic->conf->macaddr); |
456 | ||
d2abc563 YB |
457 | for (i = 0; i < queues; i++) { |
458 | NetClientState *nc = qemu_get_subqueue(nic, i); | |
459 | /* If this is a peer NIC and peer has already been deleted, free it now. */ | |
460 | if (nic->peer_deleted) { | |
461 | qemu_free_net_client(nc->peer); | |
462 | } else if (nc->peer) { | |
463 | /* if there are RX packets pending, complete them */ | |
464 | qemu_purge_queued_packets(nc->peer); | |
1a609520 JK |
465 | } |
466 | } | |
1a609520 | 467 | |
1ceef9f2 JW |
468 | for (i = queues - 1; i >= 0; i--) { |
469 | NetClientState *nc = qemu_get_subqueue(nic, i); | |
470 | ||
471 | qemu_cleanup_net_client(nc); | |
472 | qemu_free_net_client(nc); | |
473 | } | |
f6b26cf2 JW |
474 | |
475 | g_free(nic); | |
1a609520 JK |
476 | } |
477 | ||
57f9ef17 MM |
478 | void qemu_foreach_nic(qemu_nic_foreach func, void *opaque) |
479 | { | |
4e68f7a0 | 480 | NetClientState *nc; |
57f9ef17 | 481 | |
94878994 | 482 | QTAILQ_FOREACH(nc, &net_clients, next) { |
f394b2e2 | 483 | if (nc->info->type == NET_CLIENT_DRIVER_NIC) { |
1ceef9f2 JW |
484 | if (nc->queue_index == 0) { |
485 | func(qemu_get_nic(nc), opaque); | |
486 | } | |
57f9ef17 MM |
487 | } |
488 | } | |
57f9ef17 MM |
489 | } |
490 | ||
d6085e3a | 491 | bool qemu_has_ufo(NetClientState *nc) |
1f55ac45 | 492 | { |
d6085e3a | 493 | if (!nc || !nc->info->has_ufo) { |
1f55ac45 VM |
494 | return false; |
495 | } | |
496 | ||
d6085e3a | 497 | return nc->info->has_ufo(nc); |
1f55ac45 VM |
498 | } |
499 | ||
f03e0cf6 YB |
500 | bool qemu_has_uso(NetClientState *nc) |
501 | { | |
502 | if (!nc || !nc->info->has_uso) { | |
503 | return false; | |
504 | } | |
505 | ||
506 | return nc->info->has_uso(nc); | |
507 | } | |
508 | ||
d6085e3a | 509 | bool qemu_has_vnet_hdr(NetClientState *nc) |
1f55ac45 | 510 | { |
d6085e3a | 511 | if (!nc || !nc->info->has_vnet_hdr) { |
1f55ac45 VM |
512 | return false; |
513 | } | |
514 | ||
d6085e3a | 515 | return nc->info->has_vnet_hdr(nc); |
1f55ac45 VM |
516 | } |
517 | ||
d6085e3a | 518 | bool qemu_has_vnet_hdr_len(NetClientState *nc, int len) |
1f55ac45 | 519 | { |
d6085e3a | 520 | if (!nc || !nc->info->has_vnet_hdr_len) { |
1f55ac45 VM |
521 | return false; |
522 | } | |
523 | ||
d6085e3a | 524 | return nc->info->has_vnet_hdr_len(nc, len); |
1f55ac45 VM |
525 | } |
526 | ||
481c5232 AO |
527 | bool qemu_get_using_vnet_hdr(NetClientState *nc) |
528 | { | |
529 | if (!nc || !nc->info->get_using_vnet_hdr) { | |
530 | return false; | |
531 | } | |
532 | ||
533 | return nc->info->get_using_vnet_hdr(nc); | |
534 | } | |
535 | ||
d6085e3a | 536 | void qemu_using_vnet_hdr(NetClientState *nc, bool enable) |
1f55ac45 | 537 | { |
d6085e3a | 538 | if (!nc || !nc->info->using_vnet_hdr) { |
1f55ac45 VM |
539 | return; |
540 | } | |
541 | ||
d6085e3a | 542 | nc->info->using_vnet_hdr(nc, enable); |
1f55ac45 VM |
543 | } |
544 | ||
d6085e3a | 545 | void qemu_set_offload(NetClientState *nc, int csum, int tso4, int tso6, |
2ab0ec31 | 546 | int ecn, int ufo, int uso4, int uso6) |
1f55ac45 | 547 | { |
d6085e3a | 548 | if (!nc || !nc->info->set_offload) { |
1f55ac45 VM |
549 | return; |
550 | } | |
551 | ||
2ab0ec31 | 552 | nc->info->set_offload(nc, csum, tso4, tso6, ecn, ufo, uso4, uso6); |
1f55ac45 VM |
553 | } |
554 | ||
481c5232 AO |
555 | int qemu_get_vnet_hdr_len(NetClientState *nc) |
556 | { | |
557 | if (!nc || !nc->info->get_vnet_hdr_len) { | |
558 | return 0; | |
559 | } | |
560 | ||
561 | return nc->info->get_vnet_hdr_len(nc); | |
562 | } | |
563 | ||
d6085e3a | 564 | void qemu_set_vnet_hdr_len(NetClientState *nc, int len) |
1f55ac45 | 565 | { |
d6085e3a | 566 | if (!nc || !nc->info->set_vnet_hdr_len) { |
1f55ac45 VM |
567 | return; |
568 | } | |
569 | ||
d6b732e9 | 570 | nc->vnet_hdr_len = len; |
d6085e3a | 571 | nc->info->set_vnet_hdr_len(nc, len); |
1f55ac45 VM |
572 | } |
573 | ||
c80cd6bb GK |
574 | int qemu_set_vnet_le(NetClientState *nc, bool is_le) |
575 | { | |
e03b5686 | 576 | #if HOST_BIG_ENDIAN |
c80cd6bb GK |
577 | if (!nc || !nc->info->set_vnet_le) { |
578 | return -ENOSYS; | |
579 | } | |
580 | ||
581 | return nc->info->set_vnet_le(nc, is_le); | |
052bd52f MT |
582 | #else |
583 | return 0; | |
584 | #endif | |
c80cd6bb GK |
585 | } |
586 | ||
587 | int qemu_set_vnet_be(NetClientState *nc, bool is_be) | |
588 | { | |
e03b5686 | 589 | #if HOST_BIG_ENDIAN |
052bd52f MT |
590 | return 0; |
591 | #else | |
c80cd6bb GK |
592 | if (!nc || !nc->info->set_vnet_be) { |
593 | return -ENOSYS; | |
594 | } | |
595 | ||
596 | return nc->info->set_vnet_be(nc, is_be); | |
052bd52f | 597 | #endif |
c80cd6bb GK |
598 | } |
599 | ||
705df546 JW |
600 | int qemu_can_receive_packet(NetClientState *nc) |
601 | { | |
602 | if (nc->receive_disabled) { | |
603 | return 0; | |
604 | } else if (nc->info->can_receive && | |
605 | !nc->info->can_receive(nc)) { | |
606 | return 0; | |
607 | } | |
608 | return 1; | |
609 | } | |
610 | ||
4e68f7a0 | 611 | int qemu_can_send_packet(NetClientState *sender) |
63a01ef8 | 612 | { |
e1d64c08 HZ |
613 | int vm_running = runstate_is_running(); |
614 | ||
615 | if (!vm_running) { | |
616 | return 0; | |
617 | } | |
618 | ||
a005d073 | 619 | if (!sender->peer) { |
d80b9fc6 MM |
620 | return 1; |
621 | } | |
622 | ||
705df546 | 623 | return qemu_can_receive_packet(sender->peer); |
63a01ef8 AL |
624 | } |
625 | ||
e64c770d YH |
626 | static ssize_t filter_receive_iov(NetClientState *nc, |
627 | NetFilterDirection direction, | |
628 | NetClientState *sender, | |
629 | unsigned flags, | |
630 | const struct iovec *iov, | |
631 | int iovcnt, | |
632 | NetPacketSent *sent_cb) | |
633 | { | |
634 | ssize_t ret = 0; | |
635 | NetFilterState *nf = NULL; | |
636 | ||
25aaadf0 LZ |
637 | if (direction == NET_FILTER_DIRECTION_TX) { |
638 | QTAILQ_FOREACH(nf, &nc->filters, next) { | |
639 | ret = qemu_netfilter_receive(nf, direction, sender, flags, iov, | |
640 | iovcnt, sent_cb); | |
641 | if (ret) { | |
642 | return ret; | |
643 | } | |
644 | } | |
645 | } else { | |
eae3eb3e | 646 | QTAILQ_FOREACH_REVERSE(nf, &nc->filters, next) { |
25aaadf0 LZ |
647 | ret = qemu_netfilter_receive(nf, direction, sender, flags, iov, |
648 | iovcnt, sent_cb); | |
649 | if (ret) { | |
650 | return ret; | |
651 | } | |
e64c770d YH |
652 | } |
653 | } | |
654 | ||
655 | return ret; | |
656 | } | |
657 | ||
658 | static ssize_t filter_receive(NetClientState *nc, | |
659 | NetFilterDirection direction, | |
660 | NetClientState *sender, | |
661 | unsigned flags, | |
662 | const uint8_t *data, | |
663 | size_t size, | |
664 | NetPacketSent *sent_cb) | |
665 | { | |
666 | struct iovec iov = { | |
667 | .iov_base = (void *)data, | |
668 | .iov_len = size | |
669 | }; | |
670 | ||
671 | return filter_receive_iov(nc, direction, sender, flags, &iov, 1, sent_cb); | |
672 | } | |
673 | ||
35277d14 | 674 | void qemu_purge_queued_packets(NetClientState *nc) |
8cad5516 | 675 | { |
35277d14 | 676 | if (!nc->peer) { |
d80b9fc6 | 677 | return; |
9a6ecb30 | 678 | } |
d80b9fc6 | 679 | |
067404be | 680 | qemu_net_queue_purge(nc->peer->incoming_queue, nc); |
8cad5516 MM |
681 | } |
682 | ||
ca77d85e | 683 | void qemu_flush_or_purge_queued_packets(NetClientState *nc, bool purge) |
e94667b9 | 684 | { |
35277d14 | 685 | nc->receive_disabled = 0; |
9a6ecb30 | 686 | |
f394b2e2 | 687 | if (nc->peer && nc->peer->info->type == NET_CLIENT_DRIVER_HUBPORT) { |
199ee608 LR |
688 | if (net_hub_flush(nc->peer)) { |
689 | qemu_notify_event(); | |
690 | } | |
199ee608 | 691 | } |
067404be | 692 | if (qemu_net_queue_flush(nc->incoming_queue)) { |
987a9b48 PB |
693 | /* We emptied the queue successfully, signal to the IO thread to repoll |
694 | * the file descriptor (for tap, for example). | |
695 | */ | |
696 | qemu_notify_event(); | |
ca77d85e MT |
697 | } else if (purge) { |
698 | /* Unable to empty the queue, purge remaining packets */ | |
5fe19fb8 | 699 | qemu_net_queue_purge(nc->incoming_queue, nc->peer); |
987a9b48 | 700 | } |
e94667b9 MM |
701 | } |
702 | ||
ca77d85e MT |
703 | void qemu_flush_queued_packets(NetClientState *nc) |
704 | { | |
705 | qemu_flush_or_purge_queued_packets(nc, false); | |
706 | } | |
707 | ||
4e68f7a0 | 708 | static ssize_t qemu_send_packet_async_with_flags(NetClientState *sender, |
ca77d175 MM |
709 | unsigned flags, |
710 | const uint8_t *buf, int size, | |
711 | NetPacketSent *sent_cb) | |
764a4d1d | 712 | { |
9a6ecb30 | 713 | NetQueue *queue; |
e64c770d | 714 | int ret; |
436e5e53 | 715 | |
63a01ef8 | 716 | #ifdef DEBUG_NET |
d80b9fc6 | 717 | printf("qemu_send_packet_async:\n"); |
b42581f5 | 718 | qemu_hexdump(stdout, "net", buf, size); |
63a01ef8 | 719 | #endif |
f3b6c7fc | 720 | |
a005d073 | 721 | if (sender->link_down || !sender->peer) { |
9a6ecb30 MM |
722 | return size; |
723 | } | |
724 | ||
e64c770d YH |
725 | /* Let filters handle the packet first */ |
726 | ret = filter_receive(sender, NET_FILTER_DIRECTION_TX, | |
727 | sender, flags, buf, size, sent_cb); | |
728 | if (ret) { | |
729 | return ret; | |
730 | } | |
731 | ||
732 | ret = filter_receive(sender->peer, NET_FILTER_DIRECTION_RX, | |
733 | sender, flags, buf, size, sent_cb); | |
734 | if (ret) { | |
735 | return ret; | |
736 | } | |
737 | ||
067404be | 738 | queue = sender->peer->incoming_queue; |
9a6ecb30 | 739 | |
ca77d175 MM |
740 | return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb); |
741 | } | |
742 | ||
4e68f7a0 | 743 | ssize_t qemu_send_packet_async(NetClientState *sender, |
ca77d175 MM |
744 | const uint8_t *buf, int size, |
745 | NetPacketSent *sent_cb) | |
746 | { | |
747 | return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE, | |
748 | buf, size, sent_cb); | |
f3b6c7fc MM |
749 | } |
750 | ||
625a526b | 751 | ssize_t qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size) |
f3b6c7fc | 752 | { |
625a526b | 753 | return qemu_send_packet_async(nc, buf, size, NULL); |
63a01ef8 AL |
754 | } |
755 | ||
705df546 JW |
756 | ssize_t qemu_receive_packet(NetClientState *nc, const uint8_t *buf, int size) |
757 | { | |
758 | if (!qemu_can_receive_packet(nc)) { | |
759 | return 0; | |
760 | } | |
761 | ||
762 | return qemu_net_queue_receive(nc->incoming_queue, buf, size); | |
763 | } | |
764 | ||
765 | ssize_t qemu_receive_packet_iov(NetClientState *nc, const struct iovec *iov, | |
766 | int iovcnt) | |
767 | { | |
768 | if (!qemu_can_receive_packet(nc)) { | |
769 | return 0; | |
770 | } | |
771 | ||
772 | return qemu_net_queue_receive_iov(nc->incoming_queue, iov, iovcnt); | |
773 | } | |
774 | ||
35277d14 | 775 | ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size) |
ca77d175 | 776 | { |
35277d14 | 777 | return qemu_send_packet_async_with_flags(nc, QEMU_NET_PACKET_FLAG_RAW, |
ca77d175 MM |
778 | buf, size, NULL); |
779 | } | |
780 | ||
35277d14 | 781 | static ssize_t nc_sendv_compat(NetClientState *nc, const struct iovec *iov, |
fefe2a78 | 782 | int iovcnt, unsigned flags) |
fbe78f4f | 783 | { |
74044c8f | 784 | uint8_t *buf = NULL; |
fefe2a78 | 785 | uint8_t *buffer; |
ce053661 | 786 | size_t offset; |
74044c8f | 787 | ssize_t ret; |
fbe78f4f | 788 | |
fefe2a78 YH |
789 | if (iovcnt == 1) { |
790 | buffer = iov[0].iov_base; | |
791 | offset = iov[0].iov_len; | |
792 | } else { | |
47f9f158 PL |
793 | offset = iov_size(iov, iovcnt); |
794 | if (offset > NET_BUFSIZE) { | |
795 | return -1; | |
796 | } | |
797 | buf = g_malloc(offset); | |
fefe2a78 | 798 | buffer = buf; |
47f9f158 | 799 | offset = iov_to_buf(iov, iovcnt, 0, buf, offset); |
fefe2a78 | 800 | } |
fbe78f4f | 801 | |
fefe2a78 | 802 | if (flags & QEMU_NET_PACKET_FLAG_RAW && nc->info->receive_raw) { |
74044c8f | 803 | ret = nc->info->receive_raw(nc, buffer, offset); |
fefe2a78 | 804 | } else { |
74044c8f | 805 | ret = nc->info->receive(nc, buffer, offset); |
fefe2a78 | 806 | } |
74044c8f PD |
807 | |
808 | g_free(buf); | |
809 | return ret; | |
fbe78f4f AL |
810 | } |
811 | ||
25c01bd1 JW |
812 | static ssize_t qemu_deliver_packet_iov(NetClientState *sender, |
813 | unsigned flags, | |
814 | const struct iovec *iov, | |
815 | int iovcnt, | |
816 | void *opaque) | |
9a6ecb30 | 817 | { |
9050f976 | 818 | MemReentrancyGuard *owned_reentrancy_guard; |
35277d14 | 819 | NetClientState *nc = opaque; |
c67f5dc1 | 820 | int ret; |
9a6ecb30 | 821 | |
1592a994 | 822 | |
35277d14 | 823 | if (nc->link_down) { |
25c01bd1 | 824 | return iov_size(iov, iovcnt); |
9a6ecb30 MM |
825 | } |
826 | ||
c67f5dc1 SH |
827 | if (nc->receive_disabled) { |
828 | return 0; | |
829 | } | |
830 | ||
9050f976 AO |
831 | if (nc->info->type != NET_CLIENT_DRIVER_NIC || |
832 | qemu_get_nic(nc)->reentrancy_guard->engaged_in_io) { | |
833 | owned_reentrancy_guard = NULL; | |
834 | } else { | |
835 | owned_reentrancy_guard = qemu_get_nic(nc)->reentrancy_guard; | |
836 | owned_reentrancy_guard->engaged_in_io = true; | |
837 | } | |
838 | ||
ca1ee3d6 | 839 | if (nc->info->receive_iov && !(flags & QEMU_NET_PACKET_FLAG_RAW)) { |
c67f5dc1 | 840 | ret = nc->info->receive_iov(nc, iov, iovcnt); |
9a6ecb30 | 841 | } else { |
fefe2a78 | 842 | ret = nc_sendv_compat(nc, iov, iovcnt, flags); |
c67f5dc1 SH |
843 | } |
844 | ||
9050f976 AO |
845 | if (owned_reentrancy_guard) { |
846 | owned_reentrancy_guard->engaged_in_io = false; | |
847 | } | |
848 | ||
c67f5dc1 SH |
849 | if (ret == 0) { |
850 | nc->receive_disabled = 1; | |
e94667b9 | 851 | } |
c67f5dc1 SH |
852 | |
853 | return ret; | |
e94667b9 MM |
854 | } |
855 | ||
4e68f7a0 | 856 | ssize_t qemu_sendv_packet_async(NetClientState *sender, |
f3b6c7fc MM |
857 | const struct iovec *iov, int iovcnt, |
858 | NetPacketSent *sent_cb) | |
e94667b9 | 859 | { |
9a6ecb30 | 860 | NetQueue *queue; |
25c01bd1 | 861 | size_t size = iov_size(iov, iovcnt); |
e64c770d | 862 | int ret; |
9a6ecb30 | 863 | |
25c01bd1 JW |
864 | if (size > NET_BUFSIZE) { |
865 | return size; | |
866 | } | |
867 | ||
a005d073 | 868 | if (sender->link_down || !sender->peer) { |
25c01bd1 | 869 | return size; |
e94667b9 MM |
870 | } |
871 | ||
e64c770d YH |
872 | /* Let filters handle the packet first */ |
873 | ret = filter_receive_iov(sender, NET_FILTER_DIRECTION_TX, sender, | |
874 | QEMU_NET_PACKET_FLAG_NONE, iov, iovcnt, sent_cb); | |
875 | if (ret) { | |
876 | return ret; | |
877 | } | |
878 | ||
879 | ret = filter_receive_iov(sender->peer, NET_FILTER_DIRECTION_RX, sender, | |
880 | QEMU_NET_PACKET_FLAG_NONE, iov, iovcnt, sent_cb); | |
881 | if (ret) { | |
882 | return ret; | |
883 | } | |
884 | ||
067404be | 885 | queue = sender->peer->incoming_queue; |
9a6ecb30 | 886 | |
c0b8e49c MM |
887 | return qemu_net_queue_send_iov(queue, sender, |
888 | QEMU_NET_PACKET_FLAG_NONE, | |
889 | iov, iovcnt, sent_cb); | |
fbe78f4f AL |
890 | } |
891 | ||
f3b6c7fc | 892 | ssize_t |
35277d14 | 893 | qemu_sendv_packet(NetClientState *nc, const struct iovec *iov, int iovcnt) |
f3b6c7fc | 894 | { |
35277d14 | 895 | return qemu_sendv_packet_async(nc, iov, iovcnt, NULL); |
63a01ef8 AL |
896 | } |
897 | ||
4e68f7a0 | 898 | NetClientState *qemu_find_netdev(const char *id) |
5869c4d5 | 899 | { |
35277d14 | 900 | NetClientState *nc; |
5869c4d5 | 901 | |
35277d14 | 902 | QTAILQ_FOREACH(nc, &net_clients, next) { |
f394b2e2 | 903 | if (nc->info->type == NET_CLIENT_DRIVER_NIC) |
85dde9a9 | 904 | continue; |
35277d14 SH |
905 | if (!strcmp(nc->name, id)) { |
906 | return nc; | |
5869c4d5 MM |
907 | } |
908 | } | |
909 | ||
910 | return NULL; | |
911 | } | |
912 | ||
6c51ae73 | 913 | int qemu_find_net_clients_except(const char *id, NetClientState **ncs, |
f394b2e2 | 914 | NetClientDriver type, int max) |
6c51ae73 JW |
915 | { |
916 | NetClientState *nc; | |
917 | int ret = 0; | |
918 | ||
919 | QTAILQ_FOREACH(nc, &net_clients, next) { | |
920 | if (nc->info->type == type) { | |
921 | continue; | |
922 | } | |
40d19394 | 923 | if (!id || !strcmp(nc->name, id)) { |
6c51ae73 JW |
924 | if (ret < max) { |
925 | ncs[ret] = nc; | |
926 | } | |
927 | ret++; | |
928 | } | |
929 | } | |
930 | ||
931 | return ret; | |
932 | } | |
933 | ||
7697079b AL |
934 | static int nic_get_free_idx(void) |
935 | { | |
936 | int index; | |
937 | ||
938 | for (index = 0; index < MAX_NICS; index++) | |
939 | if (!nd_table[index].used) | |
940 | return index; | |
941 | return -1; | |
942 | } | |
943 | ||
c6941b3b TH |
944 | GPtrArray *qemu_get_nic_models(const char *device_type) |
945 | { | |
946 | GPtrArray *nic_models = g_ptr_array_new(); | |
947 | GSList *list = object_class_get_list_sorted(device_type, false); | |
948 | ||
949 | while (list) { | |
950 | DeviceClass *dc = OBJECT_CLASS_CHECK(DeviceClass, list->data, | |
951 | TYPE_DEVICE); | |
952 | GSList *next; | |
953 | if (test_bit(DEVICE_CATEGORY_NETWORK, dc->categories) && | |
954 | dc->user_creatable) { | |
955 | const char *name = object_class_get_name(list->data); | |
956 | /* | |
957 | * A network device might also be something else than a NIC, see | |
958 | * e.g. the "rocker" device. Thus we have to look for the "netdev" | |
959 | * property, too. Unfortunately, some devices like virtio-net only | |
960 | * create this property during instance_init, so we have to create | |
961 | * a temporary instance here to be able to check it. | |
962 | */ | |
963 | Object *obj = object_new_with_class(OBJECT_CLASS(dc)); | |
964 | if (object_property_find(obj, "netdev")) { | |
965 | g_ptr_array_add(nic_models, (gpointer)name); | |
966 | } | |
967 | object_unref(obj); | |
968 | } | |
969 | next = list->next; | |
970 | g_slist_free_1(list); | |
971 | list = next; | |
972 | } | |
973 | g_ptr_array_add(nic_models, NULL); | |
974 | ||
975 | return nic_models; | |
976 | } | |
977 | ||
07caea31 MA |
978 | int qemu_show_nic_models(const char *arg, const char *const *models) |
979 | { | |
980 | int i; | |
981 | ||
c8057f95 | 982 | if (!arg || !is_help_option(arg)) { |
07caea31 | 983 | return 0; |
c8057f95 | 984 | } |
07caea31 | 985 | |
3b0cca8e | 986 | printf("Available NIC models:\n"); |
7b71e03a TH |
987 | for (i = 0 ; models[i]; i++) { |
988 | printf("%s\n", models[i]); | |
989 | } | |
07caea31 MA |
990 | return 1; |
991 | } | |
992 | ||
d07f22c5 AL |
993 | void qemu_check_nic_model(NICInfo *nd, const char *model) |
994 | { | |
995 | const char *models[2]; | |
996 | ||
997 | models[0] = model; | |
998 | models[1] = NULL; | |
999 | ||
07caea31 MA |
1000 | if (qemu_show_nic_models(nd->model, models)) |
1001 | exit(0); | |
1002 | if (qemu_find_nic_model(nd, models, model) < 0) | |
1003 | exit(1); | |
d07f22c5 AL |
1004 | } |
1005 | ||
07caea31 MA |
1006 | int qemu_find_nic_model(NICInfo *nd, const char * const *models, |
1007 | const char *default_model) | |
d07f22c5 | 1008 | { |
07caea31 | 1009 | int i; |
d07f22c5 AL |
1010 | |
1011 | if (!nd->model) | |
7267c094 | 1012 | nd->model = g_strdup(default_model); |
d07f22c5 | 1013 | |
07caea31 MA |
1014 | for (i = 0 ; models[i]; i++) { |
1015 | if (strcmp(nd->model, models[i]) == 0) | |
1016 | return i; | |
d07f22c5 AL |
1017 | } |
1018 | ||
6daf194d | 1019 | error_report("Unsupported NIC model: %s", nd->model); |
07caea31 | 1020 | return -1; |
d07f22c5 AL |
1021 | } |
1022 | ||
cebea510 | 1023 | static int net_init_nic(const Netdev *netdev, const char *name, |
a30ecde6 | 1024 | NetClientState *peer, Error **errp) |
f83c6e10 MM |
1025 | { |
1026 | int idx; | |
1027 | NICInfo *nd; | |
2456f36f LE |
1028 | const NetLegacyNicOptions *nic; |
1029 | ||
f394b2e2 EB |
1030 | assert(netdev->type == NET_CLIENT_DRIVER_NIC); |
1031 | nic = &netdev->u.nic; | |
f83c6e10 MM |
1032 | |
1033 | idx = nic_get_free_idx(); | |
1034 | if (idx == -1 || nb_nics >= MAX_NICS) { | |
66308868 | 1035 | error_setg(errp, "too many NICs"); |
f83c6e10 MM |
1036 | return -1; |
1037 | } | |
1038 | ||
1039 | nd = &nd_table[idx]; | |
1040 | ||
1041 | memset(nd, 0, sizeof(*nd)); | |
1042 | ||
7480874a | 1043 | if (nic->netdev) { |
2456f36f | 1044 | nd->netdev = qemu_find_netdev(nic->netdev); |
5869c4d5 | 1045 | if (!nd->netdev) { |
66308868 | 1046 | error_setg(errp, "netdev '%s' not found", nic->netdev); |
5869c4d5 MM |
1047 | return -1; |
1048 | } | |
1049 | } else { | |
d33d93b2 SH |
1050 | assert(peer); |
1051 | nd->netdev = peer; | |
5869c4d5 | 1052 | } |
c64f50d1 | 1053 | nd->name = g_strdup(name); |
7480874a | 1054 | if (nic->model) { |
2456f36f | 1055 | nd->model = g_strdup(nic->model); |
f83c6e10 | 1056 | } |
7480874a | 1057 | if (nic->addr) { |
2456f36f | 1058 | nd->devaddr = g_strdup(nic->addr); |
f83c6e10 MM |
1059 | } |
1060 | ||
7480874a | 1061 | if (nic->macaddr && |
2456f36f | 1062 | net_parse_macaddr(nd->macaddr.a, nic->macaddr) < 0) { |
66308868 | 1063 | error_setg(errp, "invalid syntax for ethernet address"); |
f83c6e10 MM |
1064 | return -1; |
1065 | } | |
7480874a | 1066 | if (nic->macaddr && |
d60b20cf | 1067 | is_multicast_ether_addr(nd->macaddr.a)) { |
66308868 MA |
1068 | error_setg(errp, |
1069 | "NIC cannot have multicast MAC address (odd 1st byte)"); | |
d60b20cf DK |
1070 | return -1; |
1071 | } | |
6eed1856 | 1072 | qemu_macaddr_default_if_unset(&nd->macaddr); |
f83c6e10 | 1073 | |
2456f36f LE |
1074 | if (nic->has_vectors) { |
1075 | if (nic->vectors > 0x7ffffff) { | |
66308868 | 1076 | error_setg(errp, "invalid # of vectors: %"PRIu32, nic->vectors); |
2456f36f LE |
1077 | return -1; |
1078 | } | |
1079 | nd->nvectors = nic->vectors; | |
1080 | } else { | |
1081 | nd->nvectors = DEV_NVECTORS_UNSPECIFIED; | |
f83c6e10 MM |
1082 | } |
1083 | ||
1084 | nd->used = 1; | |
f83c6e10 MM |
1085 | nb_nics++; |
1086 | ||
1087 | return idx; | |
1088 | } | |
1089 | ||
6687b79d | 1090 | |
f394b2e2 | 1091 | static int (* const net_client_init_fun[NET_CLIENT_DRIVER__MAX])( |
cebea510 | 1092 | const Netdev *netdev, |
6687b79d | 1093 | const char *name, |
a30ecde6 | 1094 | NetClientState *peer, Error **errp) = { |
f394b2e2 | 1095 | [NET_CLIENT_DRIVER_NIC] = net_init_nic, |
ec302ffd | 1096 | #ifdef CONFIG_SLIRP |
f394b2e2 | 1097 | [NET_CLIENT_DRIVER_USER] = net_init_slirp, |
2944e4ec | 1098 | #endif |
f394b2e2 EB |
1099 | [NET_CLIENT_DRIVER_TAP] = net_init_tap, |
1100 | [NET_CLIENT_DRIVER_SOCKET] = net_init_socket, | |
5166fe0a LV |
1101 | [NET_CLIENT_DRIVER_STREAM] = net_init_stream, |
1102 | [NET_CLIENT_DRIVER_DGRAM] = net_init_dgram, | |
dd51058d | 1103 | #ifdef CONFIG_VDE |
f394b2e2 | 1104 | [NET_CLIENT_DRIVER_VDE] = net_init_vde, |
58952137 VM |
1105 | #endif |
1106 | #ifdef CONFIG_NETMAP | |
f394b2e2 | 1107 | [NET_CLIENT_DRIVER_NETMAP] = net_init_netmap, |
dd51058d | 1108 | #endif |
cb039ef3 IM |
1109 | #ifdef CONFIG_AF_XDP |
1110 | [NET_CLIENT_DRIVER_AF_XDP] = net_init_af_xdp, | |
1111 | #endif | |
2944e4ec | 1112 | #ifdef CONFIG_NET_BRIDGE |
f394b2e2 | 1113 | [NET_CLIENT_DRIVER_BRIDGE] = net_init_bridge, |
6687b79d | 1114 | #endif |
f394b2e2 | 1115 | [NET_CLIENT_DRIVER_HUBPORT] = net_init_hubport, |
56f41de7 | 1116 | #ifdef CONFIG_VHOST_NET_USER |
f394b2e2 | 1117 | [NET_CLIENT_DRIVER_VHOST_USER] = net_init_vhost_user, |
03ce5744 | 1118 | #endif |
1e0a84ea CL |
1119 | #ifdef CONFIG_VHOST_NET_VDPA |
1120 | [NET_CLIENT_DRIVER_VHOST_VDPA] = net_init_vhost_vdpa, | |
1121 | #endif | |
015a33bd | 1122 | #ifdef CONFIG_L2TPV3 |
f394b2e2 | 1123 | [NET_CLIENT_DRIVER_L2TPV3] = net_init_l2tpv3, |
3fb69aa1 | 1124 | #endif |
81ad2964 VY |
1125 | #ifdef CONFIG_VMNET |
1126 | [NET_CLIENT_DRIVER_VMNET_HOST] = net_init_vmnet_host, | |
1127 | [NET_CLIENT_DRIVER_VMNET_SHARED] = net_init_vmnet_shared, | |
1128 | [NET_CLIENT_DRIVER_VMNET_BRIDGED] = net_init_vmnet_bridged, | |
1129 | #endif /* CONFIG_VMNET */ | |
f83c6e10 MM |
1130 | }; |
1131 | ||
6687b79d | 1132 | |
71830d84 | 1133 | static int net_client_init1(const Netdev *netdev, bool is_netdev, Error **errp) |
f83c6e10 | 1134 | { |
4ef0defb | 1135 | NetClientState *peer = NULL; |
831734cc | 1136 | NetClientState *nc; |
f83c6e10 | 1137 | |
5294e2c7 | 1138 | if (is_netdev) { |
857d2087 | 1139 | if (netdev->type == NET_CLIENT_DRIVER_NIC || |
f394b2e2 | 1140 | !net_client_init_fun[netdev->type]) { |
7d0e12af DB |
1141 | error_setg(errp, "network backend '%s' is not compiled into this binary", |
1142 | NetClientDriver_str(netdev->type)); | |
f6b134ac MM |
1143 | return -1; |
1144 | } | |
6687b79d | 1145 | } else { |
71830d84 | 1146 | if (netdev->type == NET_CLIENT_DRIVER_NONE) { |
d139e9a6 | 1147 | return 0; /* nothing to do */ |
1e81aba5 | 1148 | } |
7d0e12af DB |
1149 | if (netdev->type == NET_CLIENT_DRIVER_HUBPORT) { |
1150 | error_setg(errp, "network backend '%s' is only supported with -netdev/-nic", | |
1151 | NetClientDriver_str(netdev->type)); | |
1152 | return -1; | |
1153 | } | |
1154 | ||
1155 | if (!net_client_init_fun[netdev->type]) { | |
1156 | error_setg(errp, "network backend '%s' is not compiled into this binary", | |
1157 | NetClientDriver_str(netdev->type)); | |
d139e9a6 SH |
1158 | return -1; |
1159 | } | |
f6b134ac | 1160 | |
af1a5c3e | 1161 | /* Do not add to a hub if it's a nic with a netdev= parameter. */ |
f394b2e2 | 1162 | if (netdev->type != NET_CLIENT_DRIVER_NIC || |
7480874a | 1163 | !netdev->u.nic.netdev) { |
af1a5c3e | 1164 | peer = net_hub_add_port(0, NULL, NULL); |
a2dbe135 | 1165 | } |
4ef0defb | 1166 | } |
6687b79d | 1167 | |
831734cc MA |
1168 | nc = qemu_find_netdev(netdev->id); |
1169 | if (nc) { | |
1170 | error_setg(errp, "Duplicate ID '%s'", netdev->id); | |
1171 | return -1; | |
1172 | } | |
1173 | ||
9d903f30 | 1174 | if (net_client_init_fun[netdev->type](netdev, netdev->id, peer, errp) < 0) { |
4ef0defb SH |
1175 | /* FIXME drop when all init functions store an Error */ |
1176 | if (errp && !*errp) { | |
f820af87 | 1177 | error_setg(errp, "Device '%s' could not be initialized", |
977c736f | 1178 | NetClientDriver_str(netdev->type)); |
f6b134ac | 1179 | } |
4ef0defb | 1180 | return -1; |
f6b134ac | 1181 | } |
08712fcb EB |
1182 | |
1183 | if (is_netdev) { | |
08712fcb EB |
1184 | nc = qemu_find_netdev(netdev->id); |
1185 | assert(nc); | |
1186 | nc->is_netdev = true; | |
1187 | } | |
1188 | ||
6687b79d LE |
1189 | return 0; |
1190 | } | |
1191 | ||
ad6f932f | 1192 | void show_netdevs(void) |
547203ea TH |
1193 | { |
1194 | int idx; | |
1195 | const char *available_netdevs[] = { | |
1196 | "socket", | |
5166fe0a LV |
1197 | "stream", |
1198 | "dgram", | |
547203ea TH |
1199 | "hubport", |
1200 | "tap", | |
1201 | #ifdef CONFIG_SLIRP | |
1202 | "user", | |
1203 | #endif | |
1204 | #ifdef CONFIG_L2TPV3 | |
1205 | "l2tpv3", | |
1206 | #endif | |
1207 | #ifdef CONFIG_VDE | |
1208 | "vde", | |
1209 | #endif | |
1210 | #ifdef CONFIG_NET_BRIDGE | |
1211 | "bridge", | |
1212 | #endif | |
1213 | #ifdef CONFIG_NETMAP | |
1214 | "netmap", | |
1215 | #endif | |
cb039ef3 IM |
1216 | #ifdef CONFIG_AF_XDP |
1217 | "af-xdp", | |
1218 | #endif | |
547203ea TH |
1219 | #ifdef CONFIG_POSIX |
1220 | "vhost-user", | |
1bc211a1 CL |
1221 | #endif |
1222 | #ifdef CONFIG_VHOST_VDPA | |
1223 | "vhost-vdpa", | |
81ad2964 VY |
1224 | #endif |
1225 | #ifdef CONFIG_VMNET | |
1226 | "vmnet-host", | |
1227 | "vmnet-shared", | |
1228 | "vmnet-bridged", | |
547203ea TH |
1229 | #endif |
1230 | }; | |
1231 | ||
ad6f932f | 1232 | qemu_printf("Available netdev backend types:\n"); |
547203ea | 1233 | for (idx = 0; idx < ARRAY_SIZE(available_netdevs); idx++) { |
ad6f932f | 1234 | qemu_printf("%s\n", available_netdevs[idx]); |
547203ea TH |
1235 | } |
1236 | } | |
f6b134ac | 1237 | |
aa09a485 | 1238 | static int net_client_init(QemuOpts *opts, bool is_netdev, Error **errp) |
6687b79d | 1239 | { |
c1112b2d | 1240 | gchar **substrings = NULL; |
71830d84 | 1241 | Netdev *object = NULL; |
6687b79d | 1242 | int ret = -1; |
09204eac | 1243 | Visitor *v = opts_visitor_new(opts); |
f83c6e10 | 1244 | |
0a4a1512 | 1245 | /* Parse convenience option format ipv6-net=fec0::0[/64] */ |
ad6f932f | 1246 | const char *ip6_net = qemu_opt_get(opts, "ipv6-net"); |
7aac531e | 1247 | |
ad6f932f PB |
1248 | if (ip6_net) { |
1249 | char *prefix_addr; | |
1250 | unsigned long prefix_len = 64; /* Default 64bit prefix length. */ | |
c1112b2d | 1251 | |
ad6f932f PB |
1252 | substrings = g_strsplit(ip6_net, "/", 2); |
1253 | if (!substrings || !substrings[0]) { | |
1254 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "ipv6-net", | |
1255 | "a valid IPv6 prefix"); | |
1256 | goto out; | |
1257 | } | |
c1112b2d | 1258 | |
ad6f932f | 1259 | prefix_addr = substrings[0]; |
7aac531e | 1260 | |
ad6f932f PB |
1261 | /* Handle user-specified prefix length. */ |
1262 | if (substrings[1] && | |
1263 | qemu_strtoul(substrings[1], NULL, 10, &prefix_len)) | |
1264 | { | |
0a4a1512 MA |
1265 | error_setg(errp, |
1266 | "parameter 'ipv6-net' expects a number after '/'"); | |
ad6f932f | 1267 | goto out; |
7aac531e | 1268 | } |
ad6f932f PB |
1269 | |
1270 | qemu_opt_set(opts, "ipv6-prefix", prefix_addr, &error_abort); | |
1271 | qemu_opt_set_number(opts, "ipv6-prefixlen", prefix_len, | |
1272 | &error_abort); | |
1273 | qemu_opt_unset(opts, "ipv6-net"); | |
7aac531e YB |
1274 | } |
1275 | ||
71830d84 TH |
1276 | /* Create an ID for -net if the user did not specify one */ |
1277 | if (!is_netdev && !qemu_opts_id(opts)) { | |
27eb3722 | 1278 | qemu_opts_set_id(opts, id_generate(ID_NET)); |
f83c6e10 MM |
1279 | } |
1280 | ||
14217038 MA |
1281 | if (visit_type_Netdev(v, NULL, &object, errp)) { |
1282 | ret = net_client_init1(object, is_netdev, errp); | |
6687b79d LE |
1283 | } |
1284 | ||
71830d84 | 1285 | qapi_free_Netdev(object); |
6687b79d | 1286 | |
21c520d0 | 1287 | out: |
c1112b2d | 1288 | g_strfreev(substrings); |
09204eac | 1289 | visit_free(v); |
6687b79d | 1290 | return ret; |
f83c6e10 MM |
1291 | } |
1292 | ||
928059a3 LC |
1293 | void netdev_add(QemuOpts *opts, Error **errp) |
1294 | { | |
0e55c381 | 1295 | net_client_init(opts, true, errp); |
928059a3 LC |
1296 | } |
1297 | ||
db2a380c | 1298 | void qmp_netdev_add(Netdev *netdev, Error **errp) |
ae82d324 | 1299 | { |
e73b4317 PB |
1300 | if (!id_wellformed(netdev->id)) { |
1301 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "id", "an identifier"); | |
1302 | return; | |
1303 | } | |
1304 | ||
08712fcb | 1305 | net_client_init1(netdev, true, errp); |
ae82d324 MA |
1306 | } |
1307 | ||
5f964155 | 1308 | void qmp_netdev_del(const char *id, Error **errp) |
ae82d324 | 1309 | { |
35277d14 | 1310 | NetClientState *nc; |
831734cc | 1311 | QemuOpts *opts; |
ae82d324 | 1312 | |
35277d14 SH |
1313 | nc = qemu_find_netdev(id); |
1314 | if (!nc) { | |
75158ebb MA |
1315 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
1316 | "Device '%s' not found", id); | |
5f964155 | 1317 | return; |
ae82d324 | 1318 | } |
5f964155 | 1319 | |
08712fcb | 1320 | if (!nc->is_netdev) { |
645c9496 SH |
1321 | error_setg(errp, "Device '%s' is not a netdev", id); |
1322 | return; | |
1323 | } | |
1324 | ||
b20c6b9e | 1325 | qemu_del_net_client(nc); |
831734cc MA |
1326 | |
1327 | /* | |
1328 | * Wart: we need to delete the QemuOpts associated with netdevs | |
1329 | * created via CLI or HMP, to avoid bogus "Duplicate ID" errors in | |
1330 | * HMP netdev_add. | |
1331 | */ | |
1332 | opts = qemu_opts_find(qemu_find_opts("netdev"), id); | |
1333 | if (opts) { | |
1334 | qemu_opts_del(opts); | |
1335 | } | |
ae82d324 MA |
1336 | } |
1337 | ||
aa9156f4 HZ |
1338 | static void netfilter_print_info(Monitor *mon, NetFilterState *nf) |
1339 | { | |
1340 | char *str; | |
1341 | ObjectProperty *prop; | |
1342 | ObjectPropertyIterator iter; | |
3b098d56 | 1343 | Visitor *v; |
aa9156f4 HZ |
1344 | |
1345 | /* generate info str */ | |
1346 | object_property_iter_init(&iter, OBJECT(nf)); | |
1347 | while ((prop = object_property_iter_next(&iter))) { | |
1348 | if (!strcmp(prop->name, "type")) { | |
1349 | continue; | |
1350 | } | |
3b098d56 | 1351 | v = string_output_visitor_new(false, &str); |
5325cc34 | 1352 | object_property_get(OBJECT(nf), prop->name, v, NULL); |
3b098d56 EB |
1353 | visit_complete(v, &str); |
1354 | visit_free(v); | |
aa9156f4 HZ |
1355 | monitor_printf(mon, ",%s=%s", prop->name, str); |
1356 | g_free(str); | |
1357 | } | |
1358 | monitor_printf(mon, "\n"); | |
1359 | } | |
1360 | ||
1a859593 | 1361 | void print_net_client(Monitor *mon, NetClientState *nc) |
44e798d3 | 1362 | { |
a4960f52 YH |
1363 | NetFilterState *nf; |
1364 | ||
1ceef9f2 JW |
1365 | monitor_printf(mon, "%s: index=%d,type=%s,%s\n", nc->name, |
1366 | nc->queue_index, | |
977c736f | 1367 | NetClientDriver_str(nc->info->type), |
56e6f594 | 1368 | nc->info_str); |
a4960f52 YH |
1369 | if (!QTAILQ_EMPTY(&nc->filters)) { |
1370 | monitor_printf(mon, "filters:\n"); | |
1371 | } | |
1372 | QTAILQ_FOREACH(nf, &nc->filters, next) { | |
7a309cc9 MA |
1373 | monitor_printf(mon, " - %s: type=%s", |
1374 | object_get_canonical_path_component(OBJECT(nf)), | |
aa9156f4 HZ |
1375 | object_get_typename(OBJECT(nf))); |
1376 | netfilter_print_info(mon, nf); | |
a4960f52 | 1377 | } |
44e798d3 JK |
1378 | } |
1379 | ||
7480874a | 1380 | RxFilterInfoList *qmp_query_rx_filter(const char *name, Error **errp) |
b1be4280 AK |
1381 | { |
1382 | NetClientState *nc; | |
95b3a8c8 | 1383 | RxFilterInfoList *filter_list = NULL, **tail = &filter_list; |
b1be4280 AK |
1384 | |
1385 | QTAILQ_FOREACH(nc, &net_clients, next) { | |
b1be4280 AK |
1386 | RxFilterInfo *info; |
1387 | ||
7480874a | 1388 | if (name && strcmp(nc->name, name) != 0) { |
b1be4280 AK |
1389 | continue; |
1390 | } | |
1391 | ||
1392 | /* only query rx-filter information of NIC */ | |
f394b2e2 | 1393 | if (nc->info->type != NET_CLIENT_DRIVER_NIC) { |
7480874a | 1394 | if (name) { |
b1be4280 | 1395 | error_setg(errp, "net client(%s) isn't a NIC", name); |
e9d635ea | 1396 | assert(!filter_list); |
9083da1d | 1397 | return NULL; |
b1be4280 AK |
1398 | } |
1399 | continue; | |
1400 | } | |
1401 | ||
5320c2ca VY |
1402 | /* only query information on queue 0 since the info is per nic, |
1403 | * not per queue | |
1404 | */ | |
1405 | if (nc->queue_index != 0) | |
1406 | continue; | |
1407 | ||
b1be4280 AK |
1408 | if (nc->info->query_rx_filter) { |
1409 | info = nc->info->query_rx_filter(nc); | |
95b3a8c8 | 1410 | QAPI_LIST_APPEND(tail, info); |
7480874a | 1411 | } else if (name) { |
b1be4280 AK |
1412 | error_setg(errp, "net client(%s) doesn't support" |
1413 | " rx-filter querying", name); | |
e9d635ea | 1414 | assert(!filter_list); |
9083da1d | 1415 | return NULL; |
b1be4280 | 1416 | } |
638fb141 | 1417 | |
7480874a | 1418 | if (name) { |
638fb141 MA |
1419 | break; |
1420 | } | |
b1be4280 AK |
1421 | } |
1422 | ||
7480874a | 1423 | if (filter_list == NULL && name) { |
b1be4280 AK |
1424 | error_setg(errp, "invalid net client name: %s", name); |
1425 | } | |
1426 | ||
1427 | return filter_list; | |
1428 | } | |
1429 | ||
5fbba3d6 ZC |
1430 | void colo_notify_filters_event(int event, Error **errp) |
1431 | { | |
1432 | NetClientState *nc; | |
1433 | NetFilterState *nf; | |
1434 | NetFilterClass *nfc = NULL; | |
1435 | Error *local_err = NULL; | |
1436 | ||
1437 | QTAILQ_FOREACH(nc, &net_clients, next) { | |
1438 | QTAILQ_FOREACH(nf, &nc->filters, next) { | |
1439 | nfc = NETFILTER_GET_CLASS(OBJECT(nf)); | |
1440 | nfc->handle_event(nf, event, &local_err); | |
1441 | if (local_err) { | |
1442 | error_propagate(errp, local_err); | |
1443 | return; | |
1444 | } | |
1445 | } | |
1446 | } | |
1447 | } | |
1448 | ||
4b37156c | 1449 | void qmp_set_link(const char *name, bool up, Error **errp) |
436e5e53 | 1450 | { |
1ceef9f2 JW |
1451 | NetClientState *ncs[MAX_QUEUE_NUM]; |
1452 | NetClientState *nc; | |
1453 | int queues, i; | |
436e5e53 | 1454 | |
1ceef9f2 | 1455 | queues = qemu_find_net_clients_except(name, ncs, |
f394b2e2 | 1456 | NET_CLIENT_DRIVER__MAX, |
1ceef9f2 JW |
1457 | MAX_QUEUE_NUM); |
1458 | ||
1459 | if (queues == 0) { | |
75158ebb MA |
1460 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
1461 | "Device '%s' not found", name); | |
4b37156c | 1462 | return; |
436e5e53 | 1463 | } |
1ceef9f2 | 1464 | nc = ncs[0]; |
436e5e53 | 1465 | |
1ceef9f2 JW |
1466 | for (i = 0; i < queues; i++) { |
1467 | ncs[i]->link_down = !up; | |
1468 | } | |
436e5e53 | 1469 | |
35277d14 SH |
1470 | if (nc->info->link_status_changed) { |
1471 | nc->info->link_status_changed(nc); | |
665a3b07 | 1472 | } |
ab1cbe1c | 1473 | |
02d38fcb VY |
1474 | if (nc->peer) { |
1475 | /* Change peer link only if the peer is NIC and then notify peer. | |
1476 | * If the peer is a HUBPORT or a backend, we do not change the | |
1477 | * link status. | |
1478 | * | |
af1a5c3e | 1479 | * This behavior is compatible with qemu hubs where there could be |
02d38fcb VY |
1480 | * multiple clients that can still communicate with each other in |
1481 | * disconnected mode. For now maintain this compatibility. | |
1482 | */ | |
f394b2e2 | 1483 | if (nc->peer->info->type == NET_CLIENT_DRIVER_NIC) { |
02d38fcb VY |
1484 | for (i = 0; i < queues; i++) { |
1485 | ncs[i]->peer->link_down = !up; | |
1486 | } | |
1487 | } | |
1488 | if (nc->peer->info->link_status_changed) { | |
1489 | nc->peer->info->link_status_changed(nc->peer); | |
1490 | } | |
ab1cbe1c | 1491 | } |
436e5e53 AL |
1492 | } |
1493 | ||
538f0497 | 1494 | static void net_vm_change_state_handler(void *opaque, bool running, |
ca77d85e MT |
1495 | RunState state) |
1496 | { | |
625de449 FZ |
1497 | NetClientState *nc; |
1498 | NetClientState *tmp; | |
ca77d85e | 1499 | |
625de449 FZ |
1500 | QTAILQ_FOREACH_SAFE(nc, &net_clients, next, tmp) { |
1501 | if (running) { | |
1502 | /* Flush queued packets and wake up backends. */ | |
1503 | if (nc->peer && qemu_can_send_packet(nc)) { | |
1504 | qemu_flush_queued_packets(nc->peer); | |
1505 | } | |
1506 | } else { | |
1507 | /* Complete all queued packets, to guarantee we don't modify | |
1508 | * state later when VM is not running. | |
1509 | */ | |
ca77d85e MT |
1510 | qemu_flush_or_purge_queued_packets(nc, true); |
1511 | } | |
1512 | } | |
1513 | } | |
1514 | ||
63a01ef8 AL |
1515 | void net_cleanup(void) |
1516 | { | |
1ceef9f2 | 1517 | NetClientState *nc; |
577c4af9 | 1518 | |
0c7af1a7 RL |
1519 | /*cleanup colo compare module for COLO*/ |
1520 | colo_compare_cleanup(); | |
1521 | ||
1ceef9f2 JW |
1522 | /* We may del multiple entries during qemu_del_net_client(), |
1523 | * so QTAILQ_FOREACH_SAFE() is also not safe here. | |
1524 | */ | |
1525 | while (!QTAILQ_EMPTY(&net_clients)) { | |
1526 | nc = QTAILQ_FIRST(&net_clients); | |
f394b2e2 | 1527 | if (nc->info->type == NET_CLIENT_DRIVER_NIC) { |
948ecf21 JW |
1528 | qemu_del_nic(qemu_get_nic(nc)); |
1529 | } else { | |
1530 | qemu_del_net_client(nc); | |
1531 | } | |
577c4af9 | 1532 | } |
ca77d85e MT |
1533 | |
1534 | qemu_del_vm_change_state_handler(net_change_state_entry); | |
63a01ef8 AL |
1535 | } |
1536 | ||
668680f7 | 1537 | void net_check_clients(void) |
63a01ef8 | 1538 | { |
35277d14 | 1539 | NetClientState *nc; |
48e2faf2 | 1540 | int i; |
63a01ef8 | 1541 | |
81017645 | 1542 | net_hub_check_clients(); |
ac60cc18 | 1543 | |
35277d14 SH |
1544 | QTAILQ_FOREACH(nc, &net_clients, next) { |
1545 | if (!nc->peer) { | |
8297be80 | 1546 | warn_report("%s %s has no peer", |
b62e39b4 AF |
1547 | nc->info->type == NET_CLIENT_DRIVER_NIC |
1548 | ? "nic" : "netdev", | |
1549 | nc->name); | |
efe32fdd MA |
1550 | } |
1551 | } | |
48e2faf2 PM |
1552 | |
1553 | /* Check that all NICs requested via -net nic actually got created. | |
1554 | * NICs created via -device don't need to be checked here because | |
1555 | * they are always instantiated. | |
1556 | */ | |
1557 | for (i = 0; i < MAX_NICS; i++) { | |
1558 | NICInfo *nd = &nd_table[i]; | |
1559 | if (nd->used && !nd->instantiated) { | |
8297be80 AF |
1560 | warn_report("requested NIC (%s, model %s) " |
1561 | "was not created (not supported by this machine?)", | |
1562 | nd->name ? nd->name : "anonymous", | |
1563 | nd->model ? nd->model : "unspecified"); | |
48e2faf2 PM |
1564 | } |
1565 | } | |
63a01ef8 | 1566 | } |
dc1c9fe8 | 1567 | |
28d0de7a | 1568 | static int net_init_client(void *dummy, QemuOpts *opts, Error **errp) |
dc1c9fe8 | 1569 | { |
34f708b0 | 1570 | return net_client_init(opts, false, errp); |
f6b134ac MM |
1571 | } |
1572 | ||
28d0de7a | 1573 | static int net_init_netdev(void *dummy, QemuOpts *opts, Error **errp) |
f6b134ac | 1574 | { |
ad6f932f PB |
1575 | const char *type = qemu_opt_get(opts, "type"); |
1576 | ||
1577 | if (type && is_help_option(type)) { | |
1578 | show_netdevs(); | |
1579 | exit(0); | |
1580 | } | |
34f708b0 | 1581 | return net_client_init(opts, true, errp); |
dc1c9fe8 | 1582 | } |
4559a1db | 1583 | |
78cd6f7b TH |
1584 | /* For the convenience "--nic" parameter */ |
1585 | static int net_param_nic(void *dummy, QemuOpts *opts, Error **errp) | |
1586 | { | |
1587 | char *mac, *nd_id; | |
1588 | int idx, ret; | |
1589 | NICInfo *ni; | |
1590 | const char *type; | |
1591 | ||
1592 | type = qemu_opt_get(opts, "type"); | |
27c81924 TH |
1593 | if (type) { |
1594 | if (g_str_equal(type, "none")) { | |
1595 | return 0; /* Nothing to do, default_net is cleared in vl.c */ | |
1596 | } | |
1597 | if (is_help_option(type)) { | |
1598 | GPtrArray *nic_models = qemu_get_nic_models(TYPE_DEVICE); | |
1599 | show_netdevs(); | |
1600 | printf("\n"); | |
1601 | qemu_show_nic_models(type, (const char **)nic_models->pdata); | |
1602 | g_ptr_array_free(nic_models, true); | |
1603 | exit(0); | |
1604 | } | |
78cd6f7b TH |
1605 | } |
1606 | ||
1607 | idx = nic_get_free_idx(); | |
1608 | if (idx == -1 || nb_nics >= MAX_NICS) { | |
1609 | error_setg(errp, "no more on-board/default NIC slots available"); | |
4559a1db LC |
1610 | return -1; |
1611 | } | |
1612 | ||
78cd6f7b TH |
1613 | if (!type) { |
1614 | qemu_opt_set(opts, "type", "user", &error_abort); | |
1615 | } | |
1616 | ||
1617 | ni = &nd_table[idx]; | |
1618 | memset(ni, 0, sizeof(*ni)); | |
1619 | ni->model = qemu_opt_get_del(opts, "model"); | |
1620 | ||
1621 | /* Create an ID if the user did not specify one */ | |
1622 | nd_id = g_strdup(qemu_opts_id(opts)); | |
1623 | if (!nd_id) { | |
27eb3722 | 1624 | nd_id = id_generate(ID_NET); |
78cd6f7b TH |
1625 | qemu_opts_set_id(opts, nd_id); |
1626 | } | |
1627 | ||
1628 | /* Handle MAC address */ | |
1629 | mac = qemu_opt_get_del(opts, "mac"); | |
1630 | if (mac) { | |
1631 | ret = net_parse_macaddr(ni->macaddr.a, mac); | |
1632 | g_free(mac); | |
1633 | if (ret) { | |
1634 | error_setg(errp, "invalid syntax for ethernet address"); | |
9d946191 | 1635 | goto out; |
78cd6f7b TH |
1636 | } |
1637 | if (is_multicast_ether_addr(ni->macaddr.a)) { | |
1638 | error_setg(errp, "NIC cannot have multicast MAC address"); | |
9d946191 TH |
1639 | ret = -1; |
1640 | goto out; | |
78cd6f7b TH |
1641 | } |
1642 | } | |
1643 | qemu_macaddr_default_if_unset(&ni->macaddr); | |
1644 | ||
1645 | ret = net_client_init(opts, true, errp); | |
1646 | if (ret == 0) { | |
1647 | ni->netdev = qemu_find_netdev(nd_id); | |
1648 | ni->used = true; | |
1649 | nb_nics++; | |
1650 | } | |
1651 | ||
9d946191 | 1652 | out: |
78cd6f7b | 1653 | g_free(nd_id); |
4559a1db | 1654 | return ret; |
dc1c9fe8 MM |
1655 | } |
1656 | ||
f3eedcdd LV |
1657 | static void netdev_init_modern(void) |
1658 | { | |
1659 | while (!QSIMPLEQ_EMPTY(&nd_queue)) { | |
1660 | NetdevQueueEntry *nd = QSIMPLEQ_FIRST(&nd_queue); | |
1661 | ||
1662 | QSIMPLEQ_REMOVE_HEAD(&nd_queue, entry); | |
1663 | loc_push_restore(&nd->loc); | |
1664 | net_client_init1(nd->nd, true, &error_fatal); | |
1665 | loc_pop(&nd->loc); | |
1666 | qapi_free_Netdev(nd->nd); | |
1667 | g_free(nd); | |
1668 | } | |
1669 | } | |
1670 | ||
d63ef17b | 1671 | void net_init_clients(void) |
dc1c9fe8 | 1672 | { |
ca77d85e MT |
1673 | net_change_state_entry = |
1674 | qemu_add_vm_change_state_handler(net_vm_change_state_handler, NULL); | |
1675 | ||
94878994 | 1676 | QTAILQ_INIT(&net_clients); |
5610c3aa | 1677 | |
f3eedcdd LV |
1678 | netdev_init_modern(); |
1679 | ||
d63ef17b LV |
1680 | qemu_opts_foreach(qemu_find_opts("netdev"), net_init_netdev, NULL, |
1681 | &error_fatal); | |
78cd6f7b | 1682 | |
d63ef17b LV |
1683 | qemu_opts_foreach(qemu_find_opts("nic"), net_param_nic, NULL, |
1684 | &error_fatal); | |
dc1c9fe8 | 1685 | |
d63ef17b LV |
1686 | qemu_opts_foreach(qemu_find_opts("net"), net_init_client, NULL, |
1687 | &error_fatal); | |
dc1c9fe8 MM |
1688 | } |
1689 | ||
f3eedcdd LV |
1690 | /* |
1691 | * Does this -netdev argument use modern rather than traditional syntax? | |
1692 | * Modern syntax is to be parsed with netdev_parse_modern(). | |
1693 | * Traditional syntax is to be parsed with net_client_parse(). | |
1694 | */ | |
73071f19 | 1695 | bool netdev_is_modern(const char *optstr) |
f3eedcdd | 1696 | { |
5166fe0a LV |
1697 | QemuOpts *opts; |
1698 | bool is_modern; | |
1699 | const char *type; | |
1700 | static QemuOptsList dummy_opts = { | |
1701 | .name = "netdev", | |
1702 | .implied_opt_name = "type", | |
1703 | .head = QTAILQ_HEAD_INITIALIZER(dummy_opts.head), | |
1704 | .desc = { { } }, | |
1705 | }; | |
1706 | ||
73071f19 | 1707 | if (optstr[0] == '{') { |
5166fe0a LV |
1708 | /* This is JSON, which means it's modern syntax */ |
1709 | return true; | |
1710 | } | |
1711 | ||
1712 | opts = qemu_opts_create(&dummy_opts, NULL, false, &error_abort); | |
73071f19 | 1713 | qemu_opts_do_parse(opts, optstr, dummy_opts.implied_opt_name, |
5166fe0a LV |
1714 | &error_abort); |
1715 | type = qemu_opt_get(opts, "type"); | |
1716 | is_modern = !g_strcmp0(type, "stream") || !g_strcmp0(type, "dgram"); | |
1717 | ||
1718 | qemu_opts_reset(&dummy_opts); | |
1719 | ||
1720 | return is_modern; | |
f3eedcdd LV |
1721 | } |
1722 | ||
1723 | /* | |
1724 | * netdev_parse_modern() uses modern, more expressive syntax than | |
1725 | * net_client_parse(), but supports only the -netdev option. | |
1726 | * netdev_parse_modern() appends to @nd_queue, whereas net_client_parse() | |
1727 | * appends to @qemu_netdev_opts. | |
1728 | */ | |
73071f19 | 1729 | void netdev_parse_modern(const char *optstr) |
f3eedcdd LV |
1730 | { |
1731 | Visitor *v; | |
1732 | NetdevQueueEntry *nd; | |
1733 | ||
73071f19 | 1734 | v = qobject_input_visitor_new_str(optstr, "type", &error_fatal); |
f3eedcdd LV |
1735 | nd = g_new(NetdevQueueEntry, 1); |
1736 | visit_type_Netdev(v, NULL, &nd->nd, &error_fatal); | |
1737 | visit_free(v); | |
1738 | loc_save(&nd->loc); | |
1739 | ||
1740 | QSIMPLEQ_INSERT_TAIL(&nd_queue, nd, entry); | |
1741 | } | |
1742 | ||
73071f19 | 1743 | void net_client_parse(QemuOptsList *opts_list, const char *optstr) |
dc1c9fe8 | 1744 | { |
73071f19 | 1745 | if (!qemu_opts_parse_noisily(opts_list, optstr, true)) { |
21fccb2c | 1746 | exit(1); |
dc1c9fe8 | 1747 | } |
dc1c9fe8 | 1748 | } |
7fc8d918 JW |
1749 | |
1750 | /* From FreeBSD */ | |
1751 | /* XXX: optimize */ | |
eaba8f34 | 1752 | uint32_t net_crc32(const uint8_t *p, int len) |
7fc8d918 JW |
1753 | { |
1754 | uint32_t crc; | |
1755 | int carry, i, j; | |
1756 | uint8_t b; | |
1757 | ||
1758 | crc = 0xffffffff; | |
eaba8f34 MCA |
1759 | for (i = 0; i < len; i++) { |
1760 | b = *p++; | |
7fc8d918 JW |
1761 | for (j = 0; j < 8; j++) { |
1762 | carry = ((crc & 0x80000000L) ? 1 : 0) ^ (b & 0x01); | |
1763 | crc <<= 1; | |
1764 | b >>= 1; | |
1765 | if (carry) { | |
eaba8f34 | 1766 | crc = ((crc ^ POLYNOMIAL_BE) | carry); |
7fc8d918 JW |
1767 | } |
1768 | } | |
1769 | } | |
eaba8f34 MCA |
1770 | |
1771 | return crc; | |
1772 | } | |
1773 | ||
f1a7deb9 MCA |
1774 | uint32_t net_crc32_le(const uint8_t *p, int len) |
1775 | { | |
1776 | uint32_t crc; | |
1777 | int carry, i, j; | |
1778 | uint8_t b; | |
1779 | ||
1780 | crc = 0xffffffff; | |
1781 | for (i = 0; i < len; i++) { | |
1782 | b = *p++; | |
1783 | for (j = 0; j < 8; j++) { | |
1784 | carry = (crc & 0x1) ^ (b & 0x01); | |
1785 | crc >>= 1; | |
1786 | b >>= 1; | |
1787 | if (carry) { | |
1788 | crc ^= POLYNOMIAL_LE; | |
1789 | } | |
1790 | } | |
1791 | } | |
1792 | ||
1793 | return crc; | |
1794 | } | |
1795 | ||
4d454574 PB |
1796 | QemuOptsList qemu_netdev_opts = { |
1797 | .name = "netdev", | |
1798 | .implied_opt_name = "type", | |
1799 | .head = QTAILQ_HEAD_INITIALIZER(qemu_netdev_opts.head), | |
78cd6f7b TH |
1800 | .desc = { |
1801 | /* | |
1802 | * no elements => accept any params | |
1803 | * validation will happen later | |
1804 | */ | |
1805 | { /* end of list */ } | |
1806 | }, | |
1807 | }; | |
1808 | ||
1809 | QemuOptsList qemu_nic_opts = { | |
1810 | .name = "nic", | |
1811 | .implied_opt_name = "type", | |
1812 | .head = QTAILQ_HEAD_INITIALIZER(qemu_nic_opts.head), | |
4d454574 PB |
1813 | .desc = { |
1814 | /* | |
1815 | * no elements => accept any params | |
1816 | * validation will happen later | |
1817 | */ | |
1818 | { /* end of list */ } | |
1819 | }, | |
1820 | }; | |
1821 | ||
1822 | QemuOptsList qemu_net_opts = { | |
1823 | .name = "net", | |
1824 | .implied_opt_name = "type", | |
1825 | .head = QTAILQ_HEAD_INITIALIZER(qemu_net_opts.head), | |
1826 | .desc = { | |
1827 | /* | |
1828 | * no elements => accept any params | |
1829 | * validation will happen later | |
1830 | */ | |
1831 | { /* end of list */ } | |
1832 | }, | |
1833 | }; | |
16a3df40 ZC |
1834 | |
1835 | void net_socket_rs_init(SocketReadState *rs, | |
3cde5ea2 ZC |
1836 | SocketReadStateFinalize *finalize, |
1837 | bool vnet_hdr) | |
16a3df40 ZC |
1838 | { |
1839 | rs->state = 0; | |
3cde5ea2 | 1840 | rs->vnet_hdr = vnet_hdr; |
16a3df40 ZC |
1841 | rs->index = 0; |
1842 | rs->packet_len = 0; | |
3cde5ea2 | 1843 | rs->vnet_hdr_len = 0; |
16a3df40 ZC |
1844 | memset(rs->buf, 0, sizeof(rs->buf)); |
1845 | rs->finalize = finalize; | |
1846 | } | |
1847 | ||
1848 | /* | |
1849 | * Returns | |
e9e0a585 ZC |
1850 | * 0: success |
1851 | * -1: error occurs | |
16a3df40 ZC |
1852 | */ |
1853 | int net_fill_rstate(SocketReadState *rs, const uint8_t *buf, int size) | |
1854 | { | |
1855 | unsigned int l; | |
1856 | ||
1857 | while (size > 0) { | |
3cde5ea2 ZC |
1858 | /* Reassemble a packet from the network. |
1859 | * 0 = getting length. | |
1860 | * 1 = getting vnet header length. | |
1861 | * 2 = getting data. | |
1862 | */ | |
1863 | switch (rs->state) { | |
16a3df40 ZC |
1864 | case 0: |
1865 | l = 4 - rs->index; | |
1866 | if (l > size) { | |
1867 | l = size; | |
1868 | } | |
1869 | memcpy(rs->buf + rs->index, buf, l); | |
1870 | buf += l; | |
1871 | size -= l; | |
1872 | rs->index += l; | |
1873 | if (rs->index == 4) { | |
1874 | /* got length */ | |
1875 | rs->packet_len = ntohl(*(uint32_t *)rs->buf); | |
1876 | rs->index = 0; | |
3cde5ea2 ZC |
1877 | if (rs->vnet_hdr) { |
1878 | rs->state = 1; | |
1879 | } else { | |
1880 | rs->state = 2; | |
1881 | rs->vnet_hdr_len = 0; | |
1882 | } | |
16a3df40 ZC |
1883 | } |
1884 | break; | |
1885 | case 1: | |
3cde5ea2 ZC |
1886 | l = 4 - rs->index; |
1887 | if (l > size) { | |
1888 | l = size; | |
1889 | } | |
1890 | memcpy(rs->buf + rs->index, buf, l); | |
1891 | buf += l; | |
1892 | size -= l; | |
1893 | rs->index += l; | |
1894 | if (rs->index == 4) { | |
1895 | /* got vnet header length */ | |
1896 | rs->vnet_hdr_len = ntohl(*(uint32_t *)rs->buf); | |
1897 | rs->index = 0; | |
1898 | rs->state = 2; | |
1899 | } | |
1900 | break; | |
1901 | case 2: | |
16a3df40 ZC |
1902 | l = rs->packet_len - rs->index; |
1903 | if (l > size) { | |
1904 | l = size; | |
1905 | } | |
1906 | if (rs->index + l <= sizeof(rs->buf)) { | |
1907 | memcpy(rs->buf + rs->index, buf, l); | |
1908 | } else { | |
1909 | fprintf(stderr, "serious error: oversized packet received," | |
1910 | "connection terminated.\n"); | |
1911 | rs->index = rs->state = 0; | |
1912 | return -1; | |
1913 | } | |
1914 | ||
1915 | rs->index += l; | |
1916 | buf += l; | |
1917 | size -= l; | |
1918 | if (rs->index >= rs->packet_len) { | |
1919 | rs->index = 0; | |
1920 | rs->state = 0; | |
e79cd406 DB |
1921 | assert(rs->finalize); |
1922 | rs->finalize(rs); | |
16a3df40 ZC |
1923 | } |
1924 | break; | |
1925 | } | |
1926 | } | |
e9e0a585 ZC |
1927 | |
1928 | assert(size == 0); | |
16a3df40 ZC |
1929 | return 0; |
1930 | } |