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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; |
4e68f7a0 | 66 | static QTAILQ_HEAD(, NetClientState) 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 | ||
d6085e3a | 498 | bool qemu_has_vnet_hdr(NetClientState *nc) |
1f55ac45 | 499 | { |
d6085e3a | 500 | if (!nc || !nc->info->has_vnet_hdr) { |
1f55ac45 VM |
501 | return false; |
502 | } | |
503 | ||
d6085e3a | 504 | return nc->info->has_vnet_hdr(nc); |
1f55ac45 VM |
505 | } |
506 | ||
d6085e3a | 507 | bool qemu_has_vnet_hdr_len(NetClientState *nc, int len) |
1f55ac45 | 508 | { |
d6085e3a | 509 | if (!nc || !nc->info->has_vnet_hdr_len) { |
1f55ac45 VM |
510 | return false; |
511 | } | |
512 | ||
d6085e3a | 513 | return nc->info->has_vnet_hdr_len(nc, len); |
1f55ac45 VM |
514 | } |
515 | ||
d6085e3a | 516 | void qemu_using_vnet_hdr(NetClientState *nc, bool enable) |
1f55ac45 | 517 | { |
d6085e3a | 518 | if (!nc || !nc->info->using_vnet_hdr) { |
1f55ac45 VM |
519 | return; |
520 | } | |
521 | ||
d6085e3a | 522 | nc->info->using_vnet_hdr(nc, enable); |
1f55ac45 VM |
523 | } |
524 | ||
d6085e3a | 525 | void qemu_set_offload(NetClientState *nc, int csum, int tso4, int tso6, |
1f55ac45 VM |
526 | int ecn, int ufo) |
527 | { | |
d6085e3a | 528 | if (!nc || !nc->info->set_offload) { |
1f55ac45 VM |
529 | return; |
530 | } | |
531 | ||
d6085e3a | 532 | nc->info->set_offload(nc, csum, tso4, tso6, ecn, ufo); |
1f55ac45 VM |
533 | } |
534 | ||
d6085e3a | 535 | void qemu_set_vnet_hdr_len(NetClientState *nc, int len) |
1f55ac45 | 536 | { |
d6085e3a | 537 | if (!nc || !nc->info->set_vnet_hdr_len) { |
1f55ac45 VM |
538 | return; |
539 | } | |
540 | ||
d6b732e9 | 541 | nc->vnet_hdr_len = len; |
d6085e3a | 542 | nc->info->set_vnet_hdr_len(nc, len); |
1f55ac45 VM |
543 | } |
544 | ||
c80cd6bb GK |
545 | int qemu_set_vnet_le(NetClientState *nc, bool is_le) |
546 | { | |
e03b5686 | 547 | #if HOST_BIG_ENDIAN |
c80cd6bb GK |
548 | if (!nc || !nc->info->set_vnet_le) { |
549 | return -ENOSYS; | |
550 | } | |
551 | ||
552 | return nc->info->set_vnet_le(nc, is_le); | |
052bd52f MT |
553 | #else |
554 | return 0; | |
555 | #endif | |
c80cd6bb GK |
556 | } |
557 | ||
558 | int qemu_set_vnet_be(NetClientState *nc, bool is_be) | |
559 | { | |
e03b5686 | 560 | #if HOST_BIG_ENDIAN |
052bd52f MT |
561 | return 0; |
562 | #else | |
c80cd6bb GK |
563 | if (!nc || !nc->info->set_vnet_be) { |
564 | return -ENOSYS; | |
565 | } | |
566 | ||
567 | return nc->info->set_vnet_be(nc, is_be); | |
052bd52f | 568 | #endif |
c80cd6bb GK |
569 | } |
570 | ||
705df546 JW |
571 | int qemu_can_receive_packet(NetClientState *nc) |
572 | { | |
573 | if (nc->receive_disabled) { | |
574 | return 0; | |
575 | } else if (nc->info->can_receive && | |
576 | !nc->info->can_receive(nc)) { | |
577 | return 0; | |
578 | } | |
579 | return 1; | |
580 | } | |
581 | ||
4e68f7a0 | 582 | int qemu_can_send_packet(NetClientState *sender) |
63a01ef8 | 583 | { |
e1d64c08 HZ |
584 | int vm_running = runstate_is_running(); |
585 | ||
586 | if (!vm_running) { | |
587 | return 0; | |
588 | } | |
589 | ||
a005d073 | 590 | if (!sender->peer) { |
d80b9fc6 MM |
591 | return 1; |
592 | } | |
593 | ||
705df546 | 594 | return qemu_can_receive_packet(sender->peer); |
63a01ef8 AL |
595 | } |
596 | ||
e64c770d YH |
597 | static ssize_t filter_receive_iov(NetClientState *nc, |
598 | NetFilterDirection direction, | |
599 | NetClientState *sender, | |
600 | unsigned flags, | |
601 | const struct iovec *iov, | |
602 | int iovcnt, | |
603 | NetPacketSent *sent_cb) | |
604 | { | |
605 | ssize_t ret = 0; | |
606 | NetFilterState *nf = NULL; | |
607 | ||
25aaadf0 LZ |
608 | if (direction == NET_FILTER_DIRECTION_TX) { |
609 | QTAILQ_FOREACH(nf, &nc->filters, next) { | |
610 | ret = qemu_netfilter_receive(nf, direction, sender, flags, iov, | |
611 | iovcnt, sent_cb); | |
612 | if (ret) { | |
613 | return ret; | |
614 | } | |
615 | } | |
616 | } else { | |
eae3eb3e | 617 | QTAILQ_FOREACH_REVERSE(nf, &nc->filters, next) { |
25aaadf0 LZ |
618 | ret = qemu_netfilter_receive(nf, direction, sender, flags, iov, |
619 | iovcnt, sent_cb); | |
620 | if (ret) { | |
621 | return ret; | |
622 | } | |
e64c770d YH |
623 | } |
624 | } | |
625 | ||
626 | return ret; | |
627 | } | |
628 | ||
629 | static ssize_t filter_receive(NetClientState *nc, | |
630 | NetFilterDirection direction, | |
631 | NetClientState *sender, | |
632 | unsigned flags, | |
633 | const uint8_t *data, | |
634 | size_t size, | |
635 | NetPacketSent *sent_cb) | |
636 | { | |
637 | struct iovec iov = { | |
638 | .iov_base = (void *)data, | |
639 | .iov_len = size | |
640 | }; | |
641 | ||
642 | return filter_receive_iov(nc, direction, sender, flags, &iov, 1, sent_cb); | |
643 | } | |
644 | ||
35277d14 | 645 | void qemu_purge_queued_packets(NetClientState *nc) |
8cad5516 | 646 | { |
35277d14 | 647 | if (!nc->peer) { |
d80b9fc6 | 648 | return; |
9a6ecb30 | 649 | } |
d80b9fc6 | 650 | |
067404be | 651 | qemu_net_queue_purge(nc->peer->incoming_queue, nc); |
8cad5516 MM |
652 | } |
653 | ||
ca77d85e | 654 | void qemu_flush_or_purge_queued_packets(NetClientState *nc, bool purge) |
e94667b9 | 655 | { |
35277d14 | 656 | nc->receive_disabled = 0; |
9a6ecb30 | 657 | |
f394b2e2 | 658 | if (nc->peer && nc->peer->info->type == NET_CLIENT_DRIVER_HUBPORT) { |
199ee608 LR |
659 | if (net_hub_flush(nc->peer)) { |
660 | qemu_notify_event(); | |
661 | } | |
199ee608 | 662 | } |
067404be | 663 | if (qemu_net_queue_flush(nc->incoming_queue)) { |
987a9b48 PB |
664 | /* We emptied the queue successfully, signal to the IO thread to repoll |
665 | * the file descriptor (for tap, for example). | |
666 | */ | |
667 | qemu_notify_event(); | |
ca77d85e MT |
668 | } else if (purge) { |
669 | /* Unable to empty the queue, purge remaining packets */ | |
5fe19fb8 | 670 | qemu_net_queue_purge(nc->incoming_queue, nc->peer); |
987a9b48 | 671 | } |
e94667b9 MM |
672 | } |
673 | ||
ca77d85e MT |
674 | void qemu_flush_queued_packets(NetClientState *nc) |
675 | { | |
676 | qemu_flush_or_purge_queued_packets(nc, false); | |
677 | } | |
678 | ||
4e68f7a0 | 679 | static ssize_t qemu_send_packet_async_with_flags(NetClientState *sender, |
ca77d175 MM |
680 | unsigned flags, |
681 | const uint8_t *buf, int size, | |
682 | NetPacketSent *sent_cb) | |
764a4d1d | 683 | { |
9a6ecb30 | 684 | NetQueue *queue; |
e64c770d | 685 | int ret; |
436e5e53 | 686 | |
63a01ef8 | 687 | #ifdef DEBUG_NET |
d80b9fc6 | 688 | printf("qemu_send_packet_async:\n"); |
b42581f5 | 689 | qemu_hexdump(stdout, "net", buf, size); |
63a01ef8 | 690 | #endif |
f3b6c7fc | 691 | |
a005d073 | 692 | if (sender->link_down || !sender->peer) { |
9a6ecb30 MM |
693 | return size; |
694 | } | |
695 | ||
e64c770d YH |
696 | /* Let filters handle the packet first */ |
697 | ret = filter_receive(sender, NET_FILTER_DIRECTION_TX, | |
698 | sender, flags, buf, size, sent_cb); | |
699 | if (ret) { | |
700 | return ret; | |
701 | } | |
702 | ||
703 | ret = filter_receive(sender->peer, NET_FILTER_DIRECTION_RX, | |
704 | sender, flags, buf, size, sent_cb); | |
705 | if (ret) { | |
706 | return ret; | |
707 | } | |
708 | ||
067404be | 709 | queue = sender->peer->incoming_queue; |
9a6ecb30 | 710 | |
ca77d175 MM |
711 | return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb); |
712 | } | |
713 | ||
4e68f7a0 | 714 | ssize_t qemu_send_packet_async(NetClientState *sender, |
ca77d175 MM |
715 | const uint8_t *buf, int size, |
716 | NetPacketSent *sent_cb) | |
717 | { | |
718 | return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE, | |
719 | buf, size, sent_cb); | |
f3b6c7fc MM |
720 | } |
721 | ||
625a526b | 722 | ssize_t qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size) |
f3b6c7fc | 723 | { |
625a526b | 724 | return qemu_send_packet_async(nc, buf, size, NULL); |
63a01ef8 AL |
725 | } |
726 | ||
705df546 JW |
727 | ssize_t qemu_receive_packet(NetClientState *nc, const uint8_t *buf, int size) |
728 | { | |
729 | if (!qemu_can_receive_packet(nc)) { | |
730 | return 0; | |
731 | } | |
732 | ||
733 | return qemu_net_queue_receive(nc->incoming_queue, buf, size); | |
734 | } | |
735 | ||
736 | ssize_t qemu_receive_packet_iov(NetClientState *nc, const struct iovec *iov, | |
737 | int iovcnt) | |
738 | { | |
739 | if (!qemu_can_receive_packet(nc)) { | |
740 | return 0; | |
741 | } | |
742 | ||
743 | return qemu_net_queue_receive_iov(nc->incoming_queue, iov, iovcnt); | |
744 | } | |
745 | ||
35277d14 | 746 | ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size) |
ca77d175 | 747 | { |
35277d14 | 748 | return qemu_send_packet_async_with_flags(nc, QEMU_NET_PACKET_FLAG_RAW, |
ca77d175 MM |
749 | buf, size, NULL); |
750 | } | |
751 | ||
35277d14 | 752 | static ssize_t nc_sendv_compat(NetClientState *nc, const struct iovec *iov, |
fefe2a78 | 753 | int iovcnt, unsigned flags) |
fbe78f4f | 754 | { |
74044c8f | 755 | uint8_t *buf = NULL; |
fefe2a78 | 756 | uint8_t *buffer; |
ce053661 | 757 | size_t offset; |
74044c8f | 758 | ssize_t ret; |
fbe78f4f | 759 | |
fefe2a78 YH |
760 | if (iovcnt == 1) { |
761 | buffer = iov[0].iov_base; | |
762 | offset = iov[0].iov_len; | |
763 | } else { | |
47f9f158 PL |
764 | offset = iov_size(iov, iovcnt); |
765 | if (offset > NET_BUFSIZE) { | |
766 | return -1; | |
767 | } | |
768 | buf = g_malloc(offset); | |
fefe2a78 | 769 | buffer = buf; |
47f9f158 | 770 | offset = iov_to_buf(iov, iovcnt, 0, buf, offset); |
fefe2a78 | 771 | } |
fbe78f4f | 772 | |
fefe2a78 | 773 | if (flags & QEMU_NET_PACKET_FLAG_RAW && nc->info->receive_raw) { |
74044c8f | 774 | ret = nc->info->receive_raw(nc, buffer, offset); |
fefe2a78 | 775 | } else { |
74044c8f | 776 | ret = nc->info->receive(nc, buffer, offset); |
fefe2a78 | 777 | } |
74044c8f PD |
778 | |
779 | g_free(buf); | |
780 | return ret; | |
fbe78f4f AL |
781 | } |
782 | ||
25c01bd1 JW |
783 | static ssize_t qemu_deliver_packet_iov(NetClientState *sender, |
784 | unsigned flags, | |
785 | const struct iovec *iov, | |
786 | int iovcnt, | |
787 | void *opaque) | |
9a6ecb30 | 788 | { |
35277d14 | 789 | NetClientState *nc = opaque; |
c67f5dc1 | 790 | int ret; |
9a6ecb30 | 791 | |
1592a994 | 792 | |
35277d14 | 793 | if (nc->link_down) { |
25c01bd1 | 794 | return iov_size(iov, iovcnt); |
9a6ecb30 MM |
795 | } |
796 | ||
c67f5dc1 SH |
797 | if (nc->receive_disabled) { |
798 | return 0; | |
799 | } | |
800 | ||
ca1ee3d6 | 801 | if (nc->info->receive_iov && !(flags & QEMU_NET_PACKET_FLAG_RAW)) { |
c67f5dc1 | 802 | ret = nc->info->receive_iov(nc, iov, iovcnt); |
9a6ecb30 | 803 | } else { |
fefe2a78 | 804 | ret = nc_sendv_compat(nc, iov, iovcnt, flags); |
c67f5dc1 SH |
805 | } |
806 | ||
807 | if (ret == 0) { | |
808 | nc->receive_disabled = 1; | |
e94667b9 | 809 | } |
c67f5dc1 SH |
810 | |
811 | return ret; | |
e94667b9 MM |
812 | } |
813 | ||
4e68f7a0 | 814 | ssize_t qemu_sendv_packet_async(NetClientState *sender, |
f3b6c7fc MM |
815 | const struct iovec *iov, int iovcnt, |
816 | NetPacketSent *sent_cb) | |
e94667b9 | 817 | { |
9a6ecb30 | 818 | NetQueue *queue; |
25c01bd1 | 819 | size_t size = iov_size(iov, iovcnt); |
e64c770d | 820 | int ret; |
9a6ecb30 | 821 | |
25c01bd1 JW |
822 | if (size > NET_BUFSIZE) { |
823 | return size; | |
824 | } | |
825 | ||
a005d073 | 826 | if (sender->link_down || !sender->peer) { |
25c01bd1 | 827 | return size; |
e94667b9 MM |
828 | } |
829 | ||
e64c770d YH |
830 | /* Let filters handle the packet first */ |
831 | ret = filter_receive_iov(sender, NET_FILTER_DIRECTION_TX, sender, | |
832 | QEMU_NET_PACKET_FLAG_NONE, iov, iovcnt, sent_cb); | |
833 | if (ret) { | |
834 | return ret; | |
835 | } | |
836 | ||
837 | ret = filter_receive_iov(sender->peer, NET_FILTER_DIRECTION_RX, sender, | |
838 | QEMU_NET_PACKET_FLAG_NONE, iov, iovcnt, sent_cb); | |
839 | if (ret) { | |
840 | return ret; | |
841 | } | |
842 | ||
067404be | 843 | queue = sender->peer->incoming_queue; |
9a6ecb30 | 844 | |
c0b8e49c MM |
845 | return qemu_net_queue_send_iov(queue, sender, |
846 | QEMU_NET_PACKET_FLAG_NONE, | |
847 | iov, iovcnt, sent_cb); | |
fbe78f4f AL |
848 | } |
849 | ||
f3b6c7fc | 850 | ssize_t |
35277d14 | 851 | qemu_sendv_packet(NetClientState *nc, const struct iovec *iov, int iovcnt) |
f3b6c7fc | 852 | { |
35277d14 | 853 | return qemu_sendv_packet_async(nc, iov, iovcnt, NULL); |
63a01ef8 AL |
854 | } |
855 | ||
4e68f7a0 | 856 | NetClientState *qemu_find_netdev(const char *id) |
5869c4d5 | 857 | { |
35277d14 | 858 | NetClientState *nc; |
5869c4d5 | 859 | |
35277d14 | 860 | QTAILQ_FOREACH(nc, &net_clients, next) { |
f394b2e2 | 861 | if (nc->info->type == NET_CLIENT_DRIVER_NIC) |
85dde9a9 | 862 | continue; |
35277d14 SH |
863 | if (!strcmp(nc->name, id)) { |
864 | return nc; | |
5869c4d5 MM |
865 | } |
866 | } | |
867 | ||
868 | return NULL; | |
869 | } | |
870 | ||
6c51ae73 | 871 | int qemu_find_net_clients_except(const char *id, NetClientState **ncs, |
f394b2e2 | 872 | NetClientDriver type, int max) |
6c51ae73 JW |
873 | { |
874 | NetClientState *nc; | |
875 | int ret = 0; | |
876 | ||
877 | QTAILQ_FOREACH(nc, &net_clients, next) { | |
878 | if (nc->info->type == type) { | |
879 | continue; | |
880 | } | |
40d19394 | 881 | if (!id || !strcmp(nc->name, id)) { |
6c51ae73 JW |
882 | if (ret < max) { |
883 | ncs[ret] = nc; | |
884 | } | |
885 | ret++; | |
886 | } | |
887 | } | |
888 | ||
889 | return ret; | |
890 | } | |
891 | ||
7697079b AL |
892 | static int nic_get_free_idx(void) |
893 | { | |
894 | int index; | |
895 | ||
896 | for (index = 0; index < MAX_NICS; index++) | |
897 | if (!nd_table[index].used) | |
898 | return index; | |
899 | return -1; | |
900 | } | |
901 | ||
07caea31 MA |
902 | int qemu_show_nic_models(const char *arg, const char *const *models) |
903 | { | |
904 | int i; | |
905 | ||
c8057f95 | 906 | if (!arg || !is_help_option(arg)) { |
07caea31 | 907 | return 0; |
c8057f95 | 908 | } |
07caea31 | 909 | |
7b71e03a TH |
910 | printf("Supported NIC models:\n"); |
911 | for (i = 0 ; models[i]; i++) { | |
912 | printf("%s\n", models[i]); | |
913 | } | |
07caea31 MA |
914 | return 1; |
915 | } | |
916 | ||
d07f22c5 AL |
917 | void qemu_check_nic_model(NICInfo *nd, const char *model) |
918 | { | |
919 | const char *models[2]; | |
920 | ||
921 | models[0] = model; | |
922 | models[1] = NULL; | |
923 | ||
07caea31 MA |
924 | if (qemu_show_nic_models(nd->model, models)) |
925 | exit(0); | |
926 | if (qemu_find_nic_model(nd, models, model) < 0) | |
927 | exit(1); | |
d07f22c5 AL |
928 | } |
929 | ||
07caea31 MA |
930 | int qemu_find_nic_model(NICInfo *nd, const char * const *models, |
931 | const char *default_model) | |
d07f22c5 | 932 | { |
07caea31 | 933 | int i; |
d07f22c5 AL |
934 | |
935 | if (!nd->model) | |
7267c094 | 936 | nd->model = g_strdup(default_model); |
d07f22c5 | 937 | |
07caea31 MA |
938 | for (i = 0 ; models[i]; i++) { |
939 | if (strcmp(nd->model, models[i]) == 0) | |
940 | return i; | |
d07f22c5 AL |
941 | } |
942 | ||
6daf194d | 943 | error_report("Unsupported NIC model: %s", nd->model); |
07caea31 | 944 | return -1; |
d07f22c5 AL |
945 | } |
946 | ||
cebea510 | 947 | static int net_init_nic(const Netdev *netdev, const char *name, |
a30ecde6 | 948 | NetClientState *peer, Error **errp) |
f83c6e10 MM |
949 | { |
950 | int idx; | |
951 | NICInfo *nd; | |
2456f36f LE |
952 | const NetLegacyNicOptions *nic; |
953 | ||
f394b2e2 EB |
954 | assert(netdev->type == NET_CLIENT_DRIVER_NIC); |
955 | nic = &netdev->u.nic; | |
f83c6e10 MM |
956 | |
957 | idx = nic_get_free_idx(); | |
958 | if (idx == -1 || nb_nics >= MAX_NICS) { | |
66308868 | 959 | error_setg(errp, "too many NICs"); |
f83c6e10 MM |
960 | return -1; |
961 | } | |
962 | ||
963 | nd = &nd_table[idx]; | |
964 | ||
965 | memset(nd, 0, sizeof(*nd)); | |
966 | ||
7480874a | 967 | if (nic->netdev) { |
2456f36f | 968 | nd->netdev = qemu_find_netdev(nic->netdev); |
5869c4d5 | 969 | if (!nd->netdev) { |
66308868 | 970 | error_setg(errp, "netdev '%s' not found", nic->netdev); |
5869c4d5 MM |
971 | return -1; |
972 | } | |
973 | } else { | |
d33d93b2 SH |
974 | assert(peer); |
975 | nd->netdev = peer; | |
5869c4d5 | 976 | } |
c64f50d1 | 977 | nd->name = g_strdup(name); |
7480874a | 978 | if (nic->model) { |
2456f36f | 979 | nd->model = g_strdup(nic->model); |
f83c6e10 | 980 | } |
7480874a | 981 | if (nic->addr) { |
2456f36f | 982 | nd->devaddr = g_strdup(nic->addr); |
f83c6e10 MM |
983 | } |
984 | ||
7480874a | 985 | if (nic->macaddr && |
2456f36f | 986 | net_parse_macaddr(nd->macaddr.a, nic->macaddr) < 0) { |
66308868 | 987 | error_setg(errp, "invalid syntax for ethernet address"); |
f83c6e10 MM |
988 | return -1; |
989 | } | |
7480874a | 990 | if (nic->macaddr && |
d60b20cf | 991 | is_multicast_ether_addr(nd->macaddr.a)) { |
66308868 MA |
992 | error_setg(errp, |
993 | "NIC cannot have multicast MAC address (odd 1st byte)"); | |
d60b20cf DK |
994 | return -1; |
995 | } | |
6eed1856 | 996 | qemu_macaddr_default_if_unset(&nd->macaddr); |
f83c6e10 | 997 | |
2456f36f LE |
998 | if (nic->has_vectors) { |
999 | if (nic->vectors > 0x7ffffff) { | |
66308868 | 1000 | error_setg(errp, "invalid # of vectors: %"PRIu32, nic->vectors); |
2456f36f LE |
1001 | return -1; |
1002 | } | |
1003 | nd->nvectors = nic->vectors; | |
1004 | } else { | |
1005 | nd->nvectors = DEV_NVECTORS_UNSPECIFIED; | |
f83c6e10 MM |
1006 | } |
1007 | ||
1008 | nd->used = 1; | |
f83c6e10 MM |
1009 | nb_nics++; |
1010 | ||
1011 | return idx; | |
1012 | } | |
1013 | ||
6687b79d | 1014 | |
f394b2e2 | 1015 | static int (* const net_client_init_fun[NET_CLIENT_DRIVER__MAX])( |
cebea510 | 1016 | const Netdev *netdev, |
6687b79d | 1017 | const char *name, |
a30ecde6 | 1018 | NetClientState *peer, Error **errp) = { |
f394b2e2 | 1019 | [NET_CLIENT_DRIVER_NIC] = net_init_nic, |
ec302ffd | 1020 | #ifdef CONFIG_SLIRP |
f394b2e2 | 1021 | [NET_CLIENT_DRIVER_USER] = net_init_slirp, |
2944e4ec | 1022 | #endif |
f394b2e2 EB |
1023 | [NET_CLIENT_DRIVER_TAP] = net_init_tap, |
1024 | [NET_CLIENT_DRIVER_SOCKET] = net_init_socket, | |
5166fe0a LV |
1025 | [NET_CLIENT_DRIVER_STREAM] = net_init_stream, |
1026 | [NET_CLIENT_DRIVER_DGRAM] = net_init_dgram, | |
dd51058d | 1027 | #ifdef CONFIG_VDE |
f394b2e2 | 1028 | [NET_CLIENT_DRIVER_VDE] = net_init_vde, |
58952137 VM |
1029 | #endif |
1030 | #ifdef CONFIG_NETMAP | |
f394b2e2 | 1031 | [NET_CLIENT_DRIVER_NETMAP] = net_init_netmap, |
dd51058d | 1032 | #endif |
2944e4ec | 1033 | #ifdef CONFIG_NET_BRIDGE |
f394b2e2 | 1034 | [NET_CLIENT_DRIVER_BRIDGE] = net_init_bridge, |
6687b79d | 1035 | #endif |
f394b2e2 | 1036 | [NET_CLIENT_DRIVER_HUBPORT] = net_init_hubport, |
56f41de7 | 1037 | #ifdef CONFIG_VHOST_NET_USER |
f394b2e2 | 1038 | [NET_CLIENT_DRIVER_VHOST_USER] = net_init_vhost_user, |
03ce5744 | 1039 | #endif |
1e0a84ea CL |
1040 | #ifdef CONFIG_VHOST_NET_VDPA |
1041 | [NET_CLIENT_DRIVER_VHOST_VDPA] = net_init_vhost_vdpa, | |
1042 | #endif | |
015a33bd | 1043 | #ifdef CONFIG_L2TPV3 |
f394b2e2 | 1044 | [NET_CLIENT_DRIVER_L2TPV3] = net_init_l2tpv3, |
3fb69aa1 | 1045 | #endif |
81ad2964 VY |
1046 | #ifdef CONFIG_VMNET |
1047 | [NET_CLIENT_DRIVER_VMNET_HOST] = net_init_vmnet_host, | |
1048 | [NET_CLIENT_DRIVER_VMNET_SHARED] = net_init_vmnet_shared, | |
1049 | [NET_CLIENT_DRIVER_VMNET_BRIDGED] = net_init_vmnet_bridged, | |
1050 | #endif /* CONFIG_VMNET */ | |
f83c6e10 MM |
1051 | }; |
1052 | ||
6687b79d | 1053 | |
71830d84 | 1054 | static int net_client_init1(const Netdev *netdev, bool is_netdev, Error **errp) |
f83c6e10 | 1055 | { |
4ef0defb | 1056 | NetClientState *peer = NULL; |
831734cc | 1057 | NetClientState *nc; |
f83c6e10 | 1058 | |
5294e2c7 | 1059 | if (is_netdev) { |
857d2087 | 1060 | if (netdev->type == NET_CLIENT_DRIVER_NIC || |
f394b2e2 | 1061 | !net_client_init_fun[netdev->type]) { |
7d0e12af DB |
1062 | error_setg(errp, "network backend '%s' is not compiled into this binary", |
1063 | NetClientDriver_str(netdev->type)); | |
f6b134ac MM |
1064 | return -1; |
1065 | } | |
6687b79d | 1066 | } else { |
71830d84 | 1067 | if (netdev->type == NET_CLIENT_DRIVER_NONE) { |
d139e9a6 | 1068 | return 0; /* nothing to do */ |
1e81aba5 | 1069 | } |
7d0e12af DB |
1070 | if (netdev->type == NET_CLIENT_DRIVER_HUBPORT) { |
1071 | error_setg(errp, "network backend '%s' is only supported with -netdev/-nic", | |
1072 | NetClientDriver_str(netdev->type)); | |
1073 | return -1; | |
1074 | } | |
1075 | ||
1076 | if (!net_client_init_fun[netdev->type]) { | |
1077 | error_setg(errp, "network backend '%s' is not compiled into this binary", | |
1078 | NetClientDriver_str(netdev->type)); | |
d139e9a6 SH |
1079 | return -1; |
1080 | } | |
f6b134ac | 1081 | |
af1a5c3e | 1082 | /* Do not add to a hub if it's a nic with a netdev= parameter. */ |
f394b2e2 | 1083 | if (netdev->type != NET_CLIENT_DRIVER_NIC || |
7480874a | 1084 | !netdev->u.nic.netdev) { |
af1a5c3e | 1085 | peer = net_hub_add_port(0, NULL, NULL); |
a2dbe135 | 1086 | } |
4ef0defb | 1087 | } |
6687b79d | 1088 | |
831734cc MA |
1089 | nc = qemu_find_netdev(netdev->id); |
1090 | if (nc) { | |
1091 | error_setg(errp, "Duplicate ID '%s'", netdev->id); | |
1092 | return -1; | |
1093 | } | |
1094 | ||
9d903f30 | 1095 | if (net_client_init_fun[netdev->type](netdev, netdev->id, peer, errp) < 0) { |
4ef0defb SH |
1096 | /* FIXME drop when all init functions store an Error */ |
1097 | if (errp && !*errp) { | |
f820af87 | 1098 | error_setg(errp, "Device '%s' could not be initialized", |
977c736f | 1099 | NetClientDriver_str(netdev->type)); |
f6b134ac | 1100 | } |
4ef0defb | 1101 | return -1; |
f6b134ac | 1102 | } |
08712fcb EB |
1103 | |
1104 | if (is_netdev) { | |
08712fcb EB |
1105 | nc = qemu_find_netdev(netdev->id); |
1106 | assert(nc); | |
1107 | nc->is_netdev = true; | |
1108 | } | |
1109 | ||
6687b79d LE |
1110 | return 0; |
1111 | } | |
1112 | ||
ad6f932f | 1113 | void show_netdevs(void) |
547203ea TH |
1114 | { |
1115 | int idx; | |
1116 | const char *available_netdevs[] = { | |
1117 | "socket", | |
5166fe0a LV |
1118 | "stream", |
1119 | "dgram", | |
547203ea TH |
1120 | "hubport", |
1121 | "tap", | |
1122 | #ifdef CONFIG_SLIRP | |
1123 | "user", | |
1124 | #endif | |
1125 | #ifdef CONFIG_L2TPV3 | |
1126 | "l2tpv3", | |
1127 | #endif | |
1128 | #ifdef CONFIG_VDE | |
1129 | "vde", | |
1130 | #endif | |
1131 | #ifdef CONFIG_NET_BRIDGE | |
1132 | "bridge", | |
1133 | #endif | |
1134 | #ifdef CONFIG_NETMAP | |
1135 | "netmap", | |
1136 | #endif | |
1137 | #ifdef CONFIG_POSIX | |
1138 | "vhost-user", | |
1bc211a1 CL |
1139 | #endif |
1140 | #ifdef CONFIG_VHOST_VDPA | |
1141 | "vhost-vdpa", | |
81ad2964 VY |
1142 | #endif |
1143 | #ifdef CONFIG_VMNET | |
1144 | "vmnet-host", | |
1145 | "vmnet-shared", | |
1146 | "vmnet-bridged", | |
547203ea TH |
1147 | #endif |
1148 | }; | |
1149 | ||
ad6f932f | 1150 | qemu_printf("Available netdev backend types:\n"); |
547203ea | 1151 | for (idx = 0; idx < ARRAY_SIZE(available_netdevs); idx++) { |
ad6f932f | 1152 | qemu_printf("%s\n", available_netdevs[idx]); |
547203ea TH |
1153 | } |
1154 | } | |
f6b134ac | 1155 | |
aa09a485 | 1156 | static int net_client_init(QemuOpts *opts, bool is_netdev, Error **errp) |
6687b79d | 1157 | { |
c1112b2d | 1158 | gchar **substrings = NULL; |
71830d84 | 1159 | Netdev *object = NULL; |
6687b79d | 1160 | int ret = -1; |
09204eac | 1161 | Visitor *v = opts_visitor_new(opts); |
f83c6e10 | 1162 | |
ad6f932f PB |
1163 | /* Parse convenience option format ip6-net=fec0::0[/64] */ |
1164 | const char *ip6_net = qemu_opt_get(opts, "ipv6-net"); | |
7aac531e | 1165 | |
ad6f932f PB |
1166 | if (ip6_net) { |
1167 | char *prefix_addr; | |
1168 | unsigned long prefix_len = 64; /* Default 64bit prefix length. */ | |
c1112b2d | 1169 | |
ad6f932f PB |
1170 | substrings = g_strsplit(ip6_net, "/", 2); |
1171 | if (!substrings || !substrings[0]) { | |
1172 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "ipv6-net", | |
1173 | "a valid IPv6 prefix"); | |
1174 | goto out; | |
1175 | } | |
c1112b2d | 1176 | |
ad6f932f | 1177 | prefix_addr = substrings[0]; |
7aac531e | 1178 | |
ad6f932f PB |
1179 | /* Handle user-specified prefix length. */ |
1180 | if (substrings[1] && | |
1181 | qemu_strtoul(substrings[1], NULL, 10, &prefix_len)) | |
1182 | { | |
1183 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, | |
1184 | "ipv6-prefixlen", "a number"); | |
1185 | goto out; | |
7aac531e | 1186 | } |
ad6f932f PB |
1187 | |
1188 | qemu_opt_set(opts, "ipv6-prefix", prefix_addr, &error_abort); | |
1189 | qemu_opt_set_number(opts, "ipv6-prefixlen", prefix_len, | |
1190 | &error_abort); | |
1191 | qemu_opt_unset(opts, "ipv6-net"); | |
7aac531e YB |
1192 | } |
1193 | ||
71830d84 TH |
1194 | /* Create an ID for -net if the user did not specify one */ |
1195 | if (!is_netdev && !qemu_opts_id(opts)) { | |
27eb3722 | 1196 | qemu_opts_set_id(opts, id_generate(ID_NET)); |
f83c6e10 MM |
1197 | } |
1198 | ||
14217038 MA |
1199 | if (visit_type_Netdev(v, NULL, &object, errp)) { |
1200 | ret = net_client_init1(object, is_netdev, errp); | |
6687b79d LE |
1201 | } |
1202 | ||
71830d84 | 1203 | qapi_free_Netdev(object); |
6687b79d | 1204 | |
21c520d0 | 1205 | out: |
c1112b2d | 1206 | g_strfreev(substrings); |
09204eac | 1207 | visit_free(v); |
6687b79d | 1208 | return ret; |
f83c6e10 MM |
1209 | } |
1210 | ||
928059a3 LC |
1211 | void netdev_add(QemuOpts *opts, Error **errp) |
1212 | { | |
0e55c381 | 1213 | net_client_init(opts, true, errp); |
928059a3 LC |
1214 | } |
1215 | ||
db2a380c | 1216 | void qmp_netdev_add(Netdev *netdev, Error **errp) |
ae82d324 | 1217 | { |
e73b4317 PB |
1218 | if (!id_wellformed(netdev->id)) { |
1219 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "id", "an identifier"); | |
1220 | return; | |
1221 | } | |
1222 | ||
08712fcb | 1223 | net_client_init1(netdev, true, errp); |
ae82d324 MA |
1224 | } |
1225 | ||
5f964155 | 1226 | void qmp_netdev_del(const char *id, Error **errp) |
ae82d324 | 1227 | { |
35277d14 | 1228 | NetClientState *nc; |
831734cc | 1229 | QemuOpts *opts; |
ae82d324 | 1230 | |
35277d14 SH |
1231 | nc = qemu_find_netdev(id); |
1232 | if (!nc) { | |
75158ebb MA |
1233 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
1234 | "Device '%s' not found", id); | |
5f964155 | 1235 | return; |
ae82d324 | 1236 | } |
5f964155 | 1237 | |
08712fcb | 1238 | if (!nc->is_netdev) { |
645c9496 SH |
1239 | error_setg(errp, "Device '%s' is not a netdev", id); |
1240 | return; | |
1241 | } | |
1242 | ||
b20c6b9e | 1243 | qemu_del_net_client(nc); |
831734cc MA |
1244 | |
1245 | /* | |
1246 | * Wart: we need to delete the QemuOpts associated with netdevs | |
1247 | * created via CLI or HMP, to avoid bogus "Duplicate ID" errors in | |
1248 | * HMP netdev_add. | |
1249 | */ | |
1250 | opts = qemu_opts_find(qemu_find_opts("netdev"), id); | |
1251 | if (opts) { | |
1252 | qemu_opts_del(opts); | |
1253 | } | |
ae82d324 MA |
1254 | } |
1255 | ||
aa9156f4 HZ |
1256 | static void netfilter_print_info(Monitor *mon, NetFilterState *nf) |
1257 | { | |
1258 | char *str; | |
1259 | ObjectProperty *prop; | |
1260 | ObjectPropertyIterator iter; | |
3b098d56 | 1261 | Visitor *v; |
aa9156f4 HZ |
1262 | |
1263 | /* generate info str */ | |
1264 | object_property_iter_init(&iter, OBJECT(nf)); | |
1265 | while ((prop = object_property_iter_next(&iter))) { | |
1266 | if (!strcmp(prop->name, "type")) { | |
1267 | continue; | |
1268 | } | |
3b098d56 | 1269 | v = string_output_visitor_new(false, &str); |
5325cc34 | 1270 | object_property_get(OBJECT(nf), prop->name, v, NULL); |
3b098d56 EB |
1271 | visit_complete(v, &str); |
1272 | visit_free(v); | |
aa9156f4 HZ |
1273 | monitor_printf(mon, ",%s=%s", prop->name, str); |
1274 | g_free(str); | |
1275 | } | |
1276 | monitor_printf(mon, "\n"); | |
1277 | } | |
1278 | ||
1a859593 | 1279 | void print_net_client(Monitor *mon, NetClientState *nc) |
44e798d3 | 1280 | { |
a4960f52 YH |
1281 | NetFilterState *nf; |
1282 | ||
1ceef9f2 JW |
1283 | monitor_printf(mon, "%s: index=%d,type=%s,%s\n", nc->name, |
1284 | nc->queue_index, | |
977c736f | 1285 | NetClientDriver_str(nc->info->type), |
56e6f594 | 1286 | nc->info_str); |
a4960f52 YH |
1287 | if (!QTAILQ_EMPTY(&nc->filters)) { |
1288 | monitor_printf(mon, "filters:\n"); | |
1289 | } | |
1290 | QTAILQ_FOREACH(nf, &nc->filters, next) { | |
7a309cc9 MA |
1291 | monitor_printf(mon, " - %s: type=%s", |
1292 | object_get_canonical_path_component(OBJECT(nf)), | |
aa9156f4 HZ |
1293 | object_get_typename(OBJECT(nf))); |
1294 | netfilter_print_info(mon, nf); | |
a4960f52 | 1295 | } |
44e798d3 JK |
1296 | } |
1297 | ||
7480874a | 1298 | RxFilterInfoList *qmp_query_rx_filter(const char *name, Error **errp) |
b1be4280 AK |
1299 | { |
1300 | NetClientState *nc; | |
95b3a8c8 | 1301 | RxFilterInfoList *filter_list = NULL, **tail = &filter_list; |
b1be4280 AK |
1302 | |
1303 | QTAILQ_FOREACH(nc, &net_clients, next) { | |
b1be4280 AK |
1304 | RxFilterInfo *info; |
1305 | ||
7480874a | 1306 | if (name && strcmp(nc->name, name) != 0) { |
b1be4280 AK |
1307 | continue; |
1308 | } | |
1309 | ||
1310 | /* only query rx-filter information of NIC */ | |
f394b2e2 | 1311 | if (nc->info->type != NET_CLIENT_DRIVER_NIC) { |
7480874a | 1312 | if (name) { |
b1be4280 | 1313 | error_setg(errp, "net client(%s) isn't a NIC", name); |
e9d635ea | 1314 | assert(!filter_list); |
9083da1d | 1315 | return NULL; |
b1be4280 AK |
1316 | } |
1317 | continue; | |
1318 | } | |
1319 | ||
5320c2ca VY |
1320 | /* only query information on queue 0 since the info is per nic, |
1321 | * not per queue | |
1322 | */ | |
1323 | if (nc->queue_index != 0) | |
1324 | continue; | |
1325 | ||
b1be4280 AK |
1326 | if (nc->info->query_rx_filter) { |
1327 | info = nc->info->query_rx_filter(nc); | |
95b3a8c8 | 1328 | QAPI_LIST_APPEND(tail, info); |
7480874a | 1329 | } else if (name) { |
b1be4280 AK |
1330 | error_setg(errp, "net client(%s) doesn't support" |
1331 | " rx-filter querying", name); | |
e9d635ea | 1332 | assert(!filter_list); |
9083da1d | 1333 | return NULL; |
b1be4280 | 1334 | } |
638fb141 | 1335 | |
7480874a | 1336 | if (name) { |
638fb141 MA |
1337 | break; |
1338 | } | |
b1be4280 AK |
1339 | } |
1340 | ||
7480874a | 1341 | if (filter_list == NULL && name) { |
b1be4280 AK |
1342 | error_setg(errp, "invalid net client name: %s", name); |
1343 | } | |
1344 | ||
1345 | return filter_list; | |
1346 | } | |
1347 | ||
1ce6be24 | 1348 | void hmp_info_network(Monitor *mon, const QDict *qdict) |
63a01ef8 | 1349 | { |
35277d14 | 1350 | NetClientState *nc, *peer; |
f394b2e2 | 1351 | NetClientDriver type; |
63a01ef8 | 1352 | |
1a859593 ZYW |
1353 | net_hub_info(mon); |
1354 | ||
35277d14 SH |
1355 | QTAILQ_FOREACH(nc, &net_clients, next) { |
1356 | peer = nc->peer; | |
1357 | type = nc->info->type; | |
5610c3aa | 1358 | |
1a859593 ZYW |
1359 | /* Skip if already printed in hub info */ |
1360 | if (net_hub_id_for_client(nc, NULL) == 0) { | |
1361 | continue; | |
5610c3aa | 1362 | } |
1a859593 | 1363 | |
f394b2e2 | 1364 | if (!peer || type == NET_CLIENT_DRIVER_NIC) { |
35277d14 | 1365 | print_net_client(mon, nc); |
19061e63 | 1366 | } /* else it's a netdev connected to a NIC, printed with the NIC */ |
f394b2e2 | 1367 | if (peer && type == NET_CLIENT_DRIVER_NIC) { |
1a859593 | 1368 | monitor_printf(mon, " \\ "); |
44e798d3 | 1369 | print_net_client(mon, peer); |
a0104e0e | 1370 | } |
a0104e0e | 1371 | } |
63a01ef8 AL |
1372 | } |
1373 | ||
5fbba3d6 ZC |
1374 | void colo_notify_filters_event(int event, Error **errp) |
1375 | { | |
1376 | NetClientState *nc; | |
1377 | NetFilterState *nf; | |
1378 | NetFilterClass *nfc = NULL; | |
1379 | Error *local_err = NULL; | |
1380 | ||
1381 | QTAILQ_FOREACH(nc, &net_clients, next) { | |
1382 | QTAILQ_FOREACH(nf, &nc->filters, next) { | |
1383 | nfc = NETFILTER_GET_CLASS(OBJECT(nf)); | |
1384 | nfc->handle_event(nf, event, &local_err); | |
1385 | if (local_err) { | |
1386 | error_propagate(errp, local_err); | |
1387 | return; | |
1388 | } | |
1389 | } | |
1390 | } | |
1391 | } | |
1392 | ||
4b37156c | 1393 | void qmp_set_link(const char *name, bool up, Error **errp) |
436e5e53 | 1394 | { |
1ceef9f2 JW |
1395 | NetClientState *ncs[MAX_QUEUE_NUM]; |
1396 | NetClientState *nc; | |
1397 | int queues, i; | |
436e5e53 | 1398 | |
1ceef9f2 | 1399 | queues = qemu_find_net_clients_except(name, ncs, |
f394b2e2 | 1400 | NET_CLIENT_DRIVER__MAX, |
1ceef9f2 JW |
1401 | MAX_QUEUE_NUM); |
1402 | ||
1403 | if (queues == 0) { | |
75158ebb MA |
1404 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
1405 | "Device '%s' not found", name); | |
4b37156c | 1406 | return; |
436e5e53 | 1407 | } |
1ceef9f2 | 1408 | nc = ncs[0]; |
436e5e53 | 1409 | |
1ceef9f2 JW |
1410 | for (i = 0; i < queues; i++) { |
1411 | ncs[i]->link_down = !up; | |
1412 | } | |
436e5e53 | 1413 | |
35277d14 SH |
1414 | if (nc->info->link_status_changed) { |
1415 | nc->info->link_status_changed(nc); | |
665a3b07 | 1416 | } |
ab1cbe1c | 1417 | |
02d38fcb VY |
1418 | if (nc->peer) { |
1419 | /* Change peer link only if the peer is NIC and then notify peer. | |
1420 | * If the peer is a HUBPORT or a backend, we do not change the | |
1421 | * link status. | |
1422 | * | |
af1a5c3e | 1423 | * This behavior is compatible with qemu hubs where there could be |
02d38fcb VY |
1424 | * multiple clients that can still communicate with each other in |
1425 | * disconnected mode. For now maintain this compatibility. | |
1426 | */ | |
f394b2e2 | 1427 | if (nc->peer->info->type == NET_CLIENT_DRIVER_NIC) { |
02d38fcb VY |
1428 | for (i = 0; i < queues; i++) { |
1429 | ncs[i]->peer->link_down = !up; | |
1430 | } | |
1431 | } | |
1432 | if (nc->peer->info->link_status_changed) { | |
1433 | nc->peer->info->link_status_changed(nc->peer); | |
1434 | } | |
ab1cbe1c | 1435 | } |
436e5e53 AL |
1436 | } |
1437 | ||
538f0497 | 1438 | static void net_vm_change_state_handler(void *opaque, bool running, |
ca77d85e MT |
1439 | RunState state) |
1440 | { | |
625de449 FZ |
1441 | NetClientState *nc; |
1442 | NetClientState *tmp; | |
ca77d85e | 1443 | |
625de449 FZ |
1444 | QTAILQ_FOREACH_SAFE(nc, &net_clients, next, tmp) { |
1445 | if (running) { | |
1446 | /* Flush queued packets and wake up backends. */ | |
1447 | if (nc->peer && qemu_can_send_packet(nc)) { | |
1448 | qemu_flush_queued_packets(nc->peer); | |
1449 | } | |
1450 | } else { | |
1451 | /* Complete all queued packets, to guarantee we don't modify | |
1452 | * state later when VM is not running. | |
1453 | */ | |
ca77d85e MT |
1454 | qemu_flush_or_purge_queued_packets(nc, true); |
1455 | } | |
1456 | } | |
1457 | } | |
1458 | ||
63a01ef8 AL |
1459 | void net_cleanup(void) |
1460 | { | |
1ceef9f2 | 1461 | NetClientState *nc; |
577c4af9 | 1462 | |
0c7af1a7 RL |
1463 | /*cleanup colo compare module for COLO*/ |
1464 | colo_compare_cleanup(); | |
1465 | ||
1ceef9f2 JW |
1466 | /* We may del multiple entries during qemu_del_net_client(), |
1467 | * so QTAILQ_FOREACH_SAFE() is also not safe here. | |
1468 | */ | |
1469 | while (!QTAILQ_EMPTY(&net_clients)) { | |
1470 | nc = QTAILQ_FIRST(&net_clients); | |
f394b2e2 | 1471 | if (nc->info->type == NET_CLIENT_DRIVER_NIC) { |
948ecf21 JW |
1472 | qemu_del_nic(qemu_get_nic(nc)); |
1473 | } else { | |
1474 | qemu_del_net_client(nc); | |
1475 | } | |
577c4af9 | 1476 | } |
ca77d85e MT |
1477 | |
1478 | qemu_del_vm_change_state_handler(net_change_state_entry); | |
63a01ef8 AL |
1479 | } |
1480 | ||
668680f7 | 1481 | void net_check_clients(void) |
63a01ef8 | 1482 | { |
35277d14 | 1483 | NetClientState *nc; |
48e2faf2 | 1484 | int i; |
63a01ef8 | 1485 | |
81017645 | 1486 | net_hub_check_clients(); |
ac60cc18 | 1487 | |
35277d14 SH |
1488 | QTAILQ_FOREACH(nc, &net_clients, next) { |
1489 | if (!nc->peer) { | |
8297be80 | 1490 | warn_report("%s %s has no peer", |
b62e39b4 AF |
1491 | nc->info->type == NET_CLIENT_DRIVER_NIC |
1492 | ? "nic" : "netdev", | |
1493 | nc->name); | |
efe32fdd MA |
1494 | } |
1495 | } | |
48e2faf2 PM |
1496 | |
1497 | /* Check that all NICs requested via -net nic actually got created. | |
1498 | * NICs created via -device don't need to be checked here because | |
1499 | * they are always instantiated. | |
1500 | */ | |
1501 | for (i = 0; i < MAX_NICS; i++) { | |
1502 | NICInfo *nd = &nd_table[i]; | |
1503 | if (nd->used && !nd->instantiated) { | |
8297be80 AF |
1504 | warn_report("requested NIC (%s, model %s) " |
1505 | "was not created (not supported by this machine?)", | |
1506 | nd->name ? nd->name : "anonymous", | |
1507 | nd->model ? nd->model : "unspecified"); | |
48e2faf2 PM |
1508 | } |
1509 | } | |
63a01ef8 | 1510 | } |
dc1c9fe8 | 1511 | |
28d0de7a | 1512 | static int net_init_client(void *dummy, QemuOpts *opts, Error **errp) |
dc1c9fe8 | 1513 | { |
34f708b0 | 1514 | return net_client_init(opts, false, errp); |
f6b134ac MM |
1515 | } |
1516 | ||
28d0de7a | 1517 | static int net_init_netdev(void *dummy, QemuOpts *opts, Error **errp) |
f6b134ac | 1518 | { |
ad6f932f PB |
1519 | const char *type = qemu_opt_get(opts, "type"); |
1520 | ||
1521 | if (type && is_help_option(type)) { | |
1522 | show_netdevs(); | |
1523 | exit(0); | |
1524 | } | |
34f708b0 | 1525 | return net_client_init(opts, true, errp); |
dc1c9fe8 | 1526 | } |
4559a1db | 1527 | |
78cd6f7b TH |
1528 | /* For the convenience "--nic" parameter */ |
1529 | static int net_param_nic(void *dummy, QemuOpts *opts, Error **errp) | |
1530 | { | |
1531 | char *mac, *nd_id; | |
1532 | int idx, ret; | |
1533 | NICInfo *ni; | |
1534 | const char *type; | |
1535 | ||
1536 | type = qemu_opt_get(opts, "type"); | |
1537 | if (type && g_str_equal(type, "none")) { | |
1538 | return 0; /* Nothing to do, default_net is cleared in vl.c */ | |
1539 | } | |
1540 | ||
1541 | idx = nic_get_free_idx(); | |
1542 | if (idx == -1 || nb_nics >= MAX_NICS) { | |
1543 | error_setg(errp, "no more on-board/default NIC slots available"); | |
4559a1db LC |
1544 | return -1; |
1545 | } | |
1546 | ||
78cd6f7b TH |
1547 | if (!type) { |
1548 | qemu_opt_set(opts, "type", "user", &error_abort); | |
1549 | } | |
1550 | ||
1551 | ni = &nd_table[idx]; | |
1552 | memset(ni, 0, sizeof(*ni)); | |
1553 | ni->model = qemu_opt_get_del(opts, "model"); | |
1554 | ||
1555 | /* Create an ID if the user did not specify one */ | |
1556 | nd_id = g_strdup(qemu_opts_id(opts)); | |
1557 | if (!nd_id) { | |
27eb3722 | 1558 | nd_id = id_generate(ID_NET); |
78cd6f7b TH |
1559 | qemu_opts_set_id(opts, nd_id); |
1560 | } | |
1561 | ||
1562 | /* Handle MAC address */ | |
1563 | mac = qemu_opt_get_del(opts, "mac"); | |
1564 | if (mac) { | |
1565 | ret = net_parse_macaddr(ni->macaddr.a, mac); | |
1566 | g_free(mac); | |
1567 | if (ret) { | |
1568 | error_setg(errp, "invalid syntax for ethernet address"); | |
9d946191 | 1569 | goto out; |
78cd6f7b TH |
1570 | } |
1571 | if (is_multicast_ether_addr(ni->macaddr.a)) { | |
1572 | error_setg(errp, "NIC cannot have multicast MAC address"); | |
9d946191 TH |
1573 | ret = -1; |
1574 | goto out; | |
78cd6f7b TH |
1575 | } |
1576 | } | |
1577 | qemu_macaddr_default_if_unset(&ni->macaddr); | |
1578 | ||
1579 | ret = net_client_init(opts, true, errp); | |
1580 | if (ret == 0) { | |
1581 | ni->netdev = qemu_find_netdev(nd_id); | |
1582 | ni->used = true; | |
1583 | nb_nics++; | |
1584 | } | |
1585 | ||
9d946191 | 1586 | out: |
78cd6f7b | 1587 | g_free(nd_id); |
4559a1db | 1588 | return ret; |
dc1c9fe8 MM |
1589 | } |
1590 | ||
f3eedcdd LV |
1591 | static void netdev_init_modern(void) |
1592 | { | |
1593 | while (!QSIMPLEQ_EMPTY(&nd_queue)) { | |
1594 | NetdevQueueEntry *nd = QSIMPLEQ_FIRST(&nd_queue); | |
1595 | ||
1596 | QSIMPLEQ_REMOVE_HEAD(&nd_queue, entry); | |
1597 | loc_push_restore(&nd->loc); | |
1598 | net_client_init1(nd->nd, true, &error_fatal); | |
1599 | loc_pop(&nd->loc); | |
1600 | qapi_free_Netdev(nd->nd); | |
1601 | g_free(nd); | |
1602 | } | |
1603 | } | |
1604 | ||
d63ef17b | 1605 | void net_init_clients(void) |
dc1c9fe8 | 1606 | { |
ca77d85e MT |
1607 | net_change_state_entry = |
1608 | qemu_add_vm_change_state_handler(net_vm_change_state_handler, NULL); | |
1609 | ||
94878994 | 1610 | QTAILQ_INIT(&net_clients); |
5610c3aa | 1611 | |
f3eedcdd LV |
1612 | netdev_init_modern(); |
1613 | ||
d63ef17b LV |
1614 | qemu_opts_foreach(qemu_find_opts("netdev"), net_init_netdev, NULL, |
1615 | &error_fatal); | |
78cd6f7b | 1616 | |
d63ef17b LV |
1617 | qemu_opts_foreach(qemu_find_opts("nic"), net_param_nic, NULL, |
1618 | &error_fatal); | |
dc1c9fe8 | 1619 | |
d63ef17b LV |
1620 | qemu_opts_foreach(qemu_find_opts("net"), net_init_client, NULL, |
1621 | &error_fatal); | |
dc1c9fe8 MM |
1622 | } |
1623 | ||
f3eedcdd LV |
1624 | /* |
1625 | * Does this -netdev argument use modern rather than traditional syntax? | |
1626 | * Modern syntax is to be parsed with netdev_parse_modern(). | |
1627 | * Traditional syntax is to be parsed with net_client_parse(). | |
1628 | */ | |
1629 | bool netdev_is_modern(const char *optarg) | |
1630 | { | |
5166fe0a LV |
1631 | QemuOpts *opts; |
1632 | bool is_modern; | |
1633 | const char *type; | |
1634 | static QemuOptsList dummy_opts = { | |
1635 | .name = "netdev", | |
1636 | .implied_opt_name = "type", | |
1637 | .head = QTAILQ_HEAD_INITIALIZER(dummy_opts.head), | |
1638 | .desc = { { } }, | |
1639 | }; | |
1640 | ||
1641 | if (optarg[0] == '{') { | |
1642 | /* This is JSON, which means it's modern syntax */ | |
1643 | return true; | |
1644 | } | |
1645 | ||
1646 | opts = qemu_opts_create(&dummy_opts, NULL, false, &error_abort); | |
1647 | qemu_opts_do_parse(opts, optarg, dummy_opts.implied_opt_name, | |
1648 | &error_abort); | |
1649 | type = qemu_opt_get(opts, "type"); | |
1650 | is_modern = !g_strcmp0(type, "stream") || !g_strcmp0(type, "dgram"); | |
1651 | ||
1652 | qemu_opts_reset(&dummy_opts); | |
1653 | ||
1654 | return is_modern; | |
f3eedcdd LV |
1655 | } |
1656 | ||
1657 | /* | |
1658 | * netdev_parse_modern() uses modern, more expressive syntax than | |
1659 | * net_client_parse(), but supports only the -netdev option. | |
1660 | * netdev_parse_modern() appends to @nd_queue, whereas net_client_parse() | |
1661 | * appends to @qemu_netdev_opts. | |
1662 | */ | |
1663 | void netdev_parse_modern(const char *optarg) | |
1664 | { | |
1665 | Visitor *v; | |
1666 | NetdevQueueEntry *nd; | |
1667 | ||
1668 | v = qobject_input_visitor_new_str(optarg, "type", &error_fatal); | |
1669 | nd = g_new(NetdevQueueEntry, 1); | |
1670 | visit_type_Netdev(v, NULL, &nd->nd, &error_fatal); | |
1671 | visit_free(v); | |
1672 | loc_save(&nd->loc); | |
1673 | ||
1674 | QSIMPLEQ_INSERT_TAIL(&nd_queue, nd, entry); | |
1675 | } | |
1676 | ||
21fccb2c | 1677 | void net_client_parse(QemuOptsList *opts_list, const char *optarg) |
dc1c9fe8 | 1678 | { |
70b94331 | 1679 | if (!qemu_opts_parse_noisily(opts_list, optarg, true)) { |
21fccb2c | 1680 | exit(1); |
dc1c9fe8 | 1681 | } |
dc1c9fe8 | 1682 | } |
7fc8d918 JW |
1683 | |
1684 | /* From FreeBSD */ | |
1685 | /* XXX: optimize */ | |
eaba8f34 | 1686 | uint32_t net_crc32(const uint8_t *p, int len) |
7fc8d918 JW |
1687 | { |
1688 | uint32_t crc; | |
1689 | int carry, i, j; | |
1690 | uint8_t b; | |
1691 | ||
1692 | crc = 0xffffffff; | |
eaba8f34 MCA |
1693 | for (i = 0; i < len; i++) { |
1694 | b = *p++; | |
7fc8d918 JW |
1695 | for (j = 0; j < 8; j++) { |
1696 | carry = ((crc & 0x80000000L) ? 1 : 0) ^ (b & 0x01); | |
1697 | crc <<= 1; | |
1698 | b >>= 1; | |
1699 | if (carry) { | |
eaba8f34 | 1700 | crc = ((crc ^ POLYNOMIAL_BE) | carry); |
7fc8d918 JW |
1701 | } |
1702 | } | |
1703 | } | |
eaba8f34 MCA |
1704 | |
1705 | return crc; | |
1706 | } | |
1707 | ||
f1a7deb9 MCA |
1708 | uint32_t net_crc32_le(const uint8_t *p, int len) |
1709 | { | |
1710 | uint32_t crc; | |
1711 | int carry, i, j; | |
1712 | uint8_t b; | |
1713 | ||
1714 | crc = 0xffffffff; | |
1715 | for (i = 0; i < len; i++) { | |
1716 | b = *p++; | |
1717 | for (j = 0; j < 8; j++) { | |
1718 | carry = (crc & 0x1) ^ (b & 0x01); | |
1719 | crc >>= 1; | |
1720 | b >>= 1; | |
1721 | if (carry) { | |
1722 | crc ^= POLYNOMIAL_LE; | |
1723 | } | |
1724 | } | |
1725 | } | |
1726 | ||
1727 | return crc; | |
1728 | } | |
1729 | ||
4d454574 PB |
1730 | QemuOptsList qemu_netdev_opts = { |
1731 | .name = "netdev", | |
1732 | .implied_opt_name = "type", | |
1733 | .head = QTAILQ_HEAD_INITIALIZER(qemu_netdev_opts.head), | |
78cd6f7b TH |
1734 | .desc = { |
1735 | /* | |
1736 | * no elements => accept any params | |
1737 | * validation will happen later | |
1738 | */ | |
1739 | { /* end of list */ } | |
1740 | }, | |
1741 | }; | |
1742 | ||
1743 | QemuOptsList qemu_nic_opts = { | |
1744 | .name = "nic", | |
1745 | .implied_opt_name = "type", | |
1746 | .head = QTAILQ_HEAD_INITIALIZER(qemu_nic_opts.head), | |
4d454574 PB |
1747 | .desc = { |
1748 | /* | |
1749 | * no elements => accept any params | |
1750 | * validation will happen later | |
1751 | */ | |
1752 | { /* end of list */ } | |
1753 | }, | |
1754 | }; | |
1755 | ||
1756 | QemuOptsList qemu_net_opts = { | |
1757 | .name = "net", | |
1758 | .implied_opt_name = "type", | |
1759 | .head = QTAILQ_HEAD_INITIALIZER(qemu_net_opts.head), | |
1760 | .desc = { | |
1761 | /* | |
1762 | * no elements => accept any params | |
1763 | * validation will happen later | |
1764 | */ | |
1765 | { /* end of list */ } | |
1766 | }, | |
1767 | }; | |
16a3df40 ZC |
1768 | |
1769 | void net_socket_rs_init(SocketReadState *rs, | |
3cde5ea2 ZC |
1770 | SocketReadStateFinalize *finalize, |
1771 | bool vnet_hdr) | |
16a3df40 ZC |
1772 | { |
1773 | rs->state = 0; | |
3cde5ea2 | 1774 | rs->vnet_hdr = vnet_hdr; |
16a3df40 ZC |
1775 | rs->index = 0; |
1776 | rs->packet_len = 0; | |
3cde5ea2 | 1777 | rs->vnet_hdr_len = 0; |
16a3df40 ZC |
1778 | memset(rs->buf, 0, sizeof(rs->buf)); |
1779 | rs->finalize = finalize; | |
1780 | } | |
1781 | ||
1782 | /* | |
1783 | * Returns | |
e9e0a585 ZC |
1784 | * 0: success |
1785 | * -1: error occurs | |
16a3df40 ZC |
1786 | */ |
1787 | int net_fill_rstate(SocketReadState *rs, const uint8_t *buf, int size) | |
1788 | { | |
1789 | unsigned int l; | |
1790 | ||
1791 | while (size > 0) { | |
3cde5ea2 ZC |
1792 | /* Reassemble a packet from the network. |
1793 | * 0 = getting length. | |
1794 | * 1 = getting vnet header length. | |
1795 | * 2 = getting data. | |
1796 | */ | |
1797 | switch (rs->state) { | |
16a3df40 ZC |
1798 | case 0: |
1799 | l = 4 - rs->index; | |
1800 | if (l > size) { | |
1801 | l = size; | |
1802 | } | |
1803 | memcpy(rs->buf + rs->index, buf, l); | |
1804 | buf += l; | |
1805 | size -= l; | |
1806 | rs->index += l; | |
1807 | if (rs->index == 4) { | |
1808 | /* got length */ | |
1809 | rs->packet_len = ntohl(*(uint32_t *)rs->buf); | |
1810 | rs->index = 0; | |
3cde5ea2 ZC |
1811 | if (rs->vnet_hdr) { |
1812 | rs->state = 1; | |
1813 | } else { | |
1814 | rs->state = 2; | |
1815 | rs->vnet_hdr_len = 0; | |
1816 | } | |
16a3df40 ZC |
1817 | } |
1818 | break; | |
1819 | case 1: | |
3cde5ea2 ZC |
1820 | l = 4 - rs->index; |
1821 | if (l > size) { | |
1822 | l = size; | |
1823 | } | |
1824 | memcpy(rs->buf + rs->index, buf, l); | |
1825 | buf += l; | |
1826 | size -= l; | |
1827 | rs->index += l; | |
1828 | if (rs->index == 4) { | |
1829 | /* got vnet header length */ | |
1830 | rs->vnet_hdr_len = ntohl(*(uint32_t *)rs->buf); | |
1831 | rs->index = 0; | |
1832 | rs->state = 2; | |
1833 | } | |
1834 | break; | |
1835 | case 2: | |
16a3df40 ZC |
1836 | l = rs->packet_len - rs->index; |
1837 | if (l > size) { | |
1838 | l = size; | |
1839 | } | |
1840 | if (rs->index + l <= sizeof(rs->buf)) { | |
1841 | memcpy(rs->buf + rs->index, buf, l); | |
1842 | } else { | |
1843 | fprintf(stderr, "serious error: oversized packet received," | |
1844 | "connection terminated.\n"); | |
1845 | rs->index = rs->state = 0; | |
1846 | return -1; | |
1847 | } | |
1848 | ||
1849 | rs->index += l; | |
1850 | buf += l; | |
1851 | size -= l; | |
1852 | if (rs->index >= rs->packet_len) { | |
1853 | rs->index = 0; | |
1854 | rs->state = 0; | |
e79cd406 DB |
1855 | assert(rs->finalize); |
1856 | rs->finalize(rs); | |
16a3df40 ZC |
1857 | } |
1858 | break; | |
1859 | } | |
1860 | } | |
e9e0a585 ZC |
1861 | |
1862 | assert(size == 0); | |
16a3df40 ZC |
1863 | return 0; |
1864 | } |