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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 MA |
37 | #include "qapi/qapi-commands-net.h" |
38 | #include "qapi/qapi-visit-net.h" | |
452fcdbc | 39 | #include "qapi/qmp/qdict.h" |
cc7a8ea7 | 40 | #include "qapi/qmp/qerror.h" |
d49b6836 | 41 | #include "qemu/error-report.h" |
1de7afc9 | 42 | #include "qemu/sockets.h" |
f348b6d1 | 43 | #include "qemu/cutils.h" |
1de7afc9 | 44 | #include "qemu/config-file.h" |
856dfd8a | 45 | #include "qemu/ctype.h" |
1de7afc9 | 46 | #include "qemu/iov.h" |
6a1751b7 | 47 | #include "qemu/main-loop.h" |
922a01a0 | 48 | #include "qemu/option.h" |
e688df6b | 49 | #include "qapi/error.h" |
6687b79d | 50 | #include "qapi/opts-visitor.h" |
e1d64c08 | 51 | #include "sysemu/sysemu.h" |
559964a1 | 52 | #include "sysemu/qtest.h" |
54d31236 MA |
53 | #include "sysemu/runstate.h" |
54 | #include "sysemu/sysemu.h" | |
fdccce45 | 55 | #include "net/filter.h" |
aa9156f4 | 56 | #include "qapi/string-output-visitor.h" |
511d2b14 | 57 | |
2944e4ec SW |
58 | /* Net bridge is currently not supported for W32. */ |
59 | #if !defined(_WIN32) | |
60 | # define CONFIG_NET_BRIDGE | |
61 | #endif | |
62 | ||
ca77d85e | 63 | static VMChangeStateEntry *net_change_state_entry; |
4e68f7a0 | 64 | static QTAILQ_HEAD(, NetClientState) net_clients; |
63a01ef8 AL |
65 | |
66 | /***********************************************************/ | |
67 | /* network device redirectors */ | |
68 | ||
bcd4dfd6 MZ |
69 | int parse_host_port(struct sockaddr_in *saddr, const char *str, |
70 | Error **errp) | |
63a01ef8 | 71 | { |
add99347 | 72 | gchar **substrings; |
63a01ef8 | 73 | struct hostent *he; |
add99347 SG |
74 | const char *addr, *p, *r; |
75 | int port, ret = 0; | |
63a01ef8 | 76 | |
add99347 SG |
77 | substrings = g_strsplit(str, ":", 2); |
78 | if (!substrings || !substrings[0] || !substrings[1]) { | |
bcd4dfd6 MZ |
79 | error_setg(errp, "host address '%s' doesn't contain ':' " |
80 | "separating host from port", str); | |
add99347 SG |
81 | ret = -1; |
82 | goto out; | |
bcd4dfd6 | 83 | } |
add99347 SG |
84 | |
85 | addr = substrings[0]; | |
86 | p = substrings[1]; | |
87 | ||
63a01ef8 | 88 | saddr->sin_family = AF_INET; |
add99347 | 89 | if (addr[0] == '\0') { |
63a01ef8 AL |
90 | saddr->sin_addr.s_addr = 0; |
91 | } else { | |
add99347 SG |
92 | if (qemu_isdigit(addr[0])) { |
93 | if (!inet_aton(addr, &saddr->sin_addr)) { | |
bcd4dfd6 | 94 | error_setg(errp, "host address '%s' is not a valid " |
add99347 SG |
95 | "IPv4 address", addr); |
96 | ret = -1; | |
97 | goto out; | |
bcd4dfd6 | 98 | } |
63a01ef8 | 99 | } else { |
add99347 | 100 | he = gethostbyname(addr); |
bcd4dfd6 | 101 | if (he == NULL) { |
add99347 SG |
102 | error_setg(errp, "can't resolve host address '%s'", addr); |
103 | ret = -1; | |
104 | goto out; | |
bcd4dfd6 | 105 | } |
63a01ef8 AL |
106 | saddr->sin_addr = *(struct in_addr *)he->h_addr; |
107 | } | |
108 | } | |
109 | port = strtol(p, (char **)&r, 0); | |
bcd4dfd6 MZ |
110 | if (r == p) { |
111 | error_setg(errp, "port number '%s' is invalid", p); | |
add99347 SG |
112 | ret = -1; |
113 | goto out; | |
bcd4dfd6 | 114 | } |
63a01ef8 | 115 | saddr->sin_port = htons(port); |
add99347 SG |
116 | |
117 | out: | |
118 | g_strfreev(substrings); | |
119 | return ret; | |
63a01ef8 AL |
120 | } |
121 | ||
890ee6ab SF |
122 | char *qemu_mac_strdup_printf(const uint8_t *macaddr) |
123 | { | |
124 | return g_strdup_printf("%.2x:%.2x:%.2x:%.2x:%.2x:%.2x", | |
125 | macaddr[0], macaddr[1], macaddr[2], | |
126 | macaddr[3], macaddr[4], macaddr[5]); | |
127 | } | |
128 | ||
35277d14 | 129 | void qemu_format_nic_info_str(NetClientState *nc, uint8_t macaddr[6]) |
7cb7434b | 130 | { |
35277d14 | 131 | snprintf(nc->info_str, sizeof(nc->info_str), |
4dda4063 | 132 | "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x", |
35277d14 | 133 | nc->model, |
7cb7434b AL |
134 | macaddr[0], macaddr[1], macaddr[2], |
135 | macaddr[3], macaddr[4], macaddr[5]); | |
136 | } | |
137 | ||
2bc22a58 SZ |
138 | static int mac_table[256] = {0}; |
139 | ||
140 | static void qemu_macaddr_set_used(MACAddr *macaddr) | |
141 | { | |
142 | int index; | |
143 | ||
144 | for (index = 0x56; index < 0xFF; index++) { | |
145 | if (macaddr->a[5] == index) { | |
146 | mac_table[index]++; | |
147 | } | |
148 | } | |
149 | } | |
150 | ||
151 | static void qemu_macaddr_set_free(MACAddr *macaddr) | |
152 | { | |
153 | int index; | |
154 | static const MACAddr base = { .a = { 0x52, 0x54, 0x00, 0x12, 0x34, 0 } }; | |
155 | ||
156 | if (memcmp(macaddr->a, &base.a, (sizeof(base.a) - 1)) != 0) { | |
157 | return; | |
158 | } | |
159 | for (index = 0x56; index < 0xFF; index++) { | |
160 | if (macaddr->a[5] == index) { | |
161 | mac_table[index]--; | |
162 | } | |
163 | } | |
164 | } | |
165 | ||
166 | static int qemu_macaddr_get_free(void) | |
167 | { | |
168 | int index; | |
169 | ||
170 | for (index = 0x56; index < 0xFF; index++) { | |
171 | if (mac_table[index] == 0) { | |
172 | return index; | |
173 | } | |
174 | } | |
175 | ||
176 | return -1; | |
177 | } | |
178 | ||
76d32cba GH |
179 | void qemu_macaddr_default_if_unset(MACAddr *macaddr) |
180 | { | |
76d32cba | 181 | static const MACAddr zero = { .a = { 0,0,0,0,0,0 } }; |
2bc22a58 SZ |
182 | static const MACAddr base = { .a = { 0x52, 0x54, 0x00, 0x12, 0x34, 0 } }; |
183 | ||
184 | if (memcmp(macaddr, &zero, sizeof(zero)) != 0) { | |
185 | if (memcmp(macaddr->a, &base.a, (sizeof(base.a) - 1)) != 0) { | |
186 | return; | |
187 | } else { | |
188 | qemu_macaddr_set_used(macaddr); | |
189 | return; | |
190 | } | |
191 | } | |
76d32cba | 192 | |
76d32cba GH |
193 | macaddr->a[0] = 0x52; |
194 | macaddr->a[1] = 0x54; | |
195 | macaddr->a[2] = 0x00; | |
196 | macaddr->a[3] = 0x12; | |
197 | macaddr->a[4] = 0x34; | |
2bc22a58 SZ |
198 | macaddr->a[5] = qemu_macaddr_get_free(); |
199 | qemu_macaddr_set_used(macaddr); | |
76d32cba GH |
200 | } |
201 | ||
d33d93b2 SH |
202 | /** |
203 | * Generate a name for net client | |
204 | * | |
c963530a | 205 | * Only net clients created with the legacy -net option and NICs need this. |
d33d93b2 | 206 | */ |
35277d14 | 207 | static char *assign_name(NetClientState *nc1, const char *model) |
676cff29 | 208 | { |
35277d14 | 209 | NetClientState *nc; |
676cff29 AL |
210 | int id = 0; |
211 | ||
35277d14 SH |
212 | QTAILQ_FOREACH(nc, &net_clients, next) { |
213 | if (nc == nc1) { | |
d33d93b2 | 214 | continue; |
5610c3aa | 215 | } |
c963530a | 216 | if (strcmp(nc->model, model) == 0) { |
53e51d85 MA |
217 | id++; |
218 | } | |
219 | } | |
220 | ||
4bf2c138 | 221 | return g_strdup_printf("%s.%d", model, id); |
676cff29 AL |
222 | } |
223 | ||
f7860455 JW |
224 | static void qemu_net_client_destructor(NetClientState *nc) |
225 | { | |
226 | g_free(nc); | |
227 | } | |
25c01bd1 JW |
228 | static ssize_t qemu_deliver_packet_iov(NetClientState *sender, |
229 | unsigned flags, | |
230 | const struct iovec *iov, | |
231 | int iovcnt, | |
232 | void *opaque); | |
f7860455 | 233 | |
18a1541a JW |
234 | static void qemu_net_client_setup(NetClientState *nc, |
235 | NetClientInfo *info, | |
236 | NetClientState *peer, | |
237 | const char *model, | |
f7860455 JW |
238 | const char *name, |
239 | NetClientDestructor *destructor) | |
63a01ef8 | 240 | { |
35277d14 SH |
241 | nc->info = info; |
242 | nc->model = g_strdup(model); | |
45460d1a | 243 | if (name) { |
35277d14 | 244 | nc->name = g_strdup(name); |
45460d1a | 245 | } else { |
35277d14 | 246 | nc->name = assign_name(nc, model); |
45460d1a | 247 | } |
5610c3aa | 248 | |
ab5f3f84 SH |
249 | if (peer) { |
250 | assert(!peer->peer); | |
35277d14 SH |
251 | nc->peer = peer; |
252 | peer->peer = nc; | |
d80b9fc6 | 253 | } |
35277d14 | 254 | QTAILQ_INSERT_TAIL(&net_clients, nc, next); |
63a01ef8 | 255 | |
3e033a46 | 256 | nc->incoming_queue = qemu_new_net_queue(qemu_deliver_packet_iov, nc); |
f7860455 | 257 | nc->destructor = destructor; |
fdccce45 | 258 | QTAILQ_INIT(&nc->filters); |
18a1541a JW |
259 | } |
260 | ||
261 | NetClientState *qemu_new_net_client(NetClientInfo *info, | |
262 | NetClientState *peer, | |
263 | const char *model, | |
264 | const char *name) | |
265 | { | |
266 | NetClientState *nc; | |
267 | ||
268 | assert(info->size >= sizeof(NetClientState)); | |
269 | ||
270 | nc = g_malloc0(info->size); | |
f7860455 JW |
271 | qemu_net_client_setup(nc, info, peer, model, name, |
272 | qemu_net_client_destructor); | |
18a1541a | 273 | |
35277d14 | 274 | return nc; |
63a01ef8 AL |
275 | } |
276 | ||
ebef2c09 MM |
277 | NICState *qemu_new_nic(NetClientInfo *info, |
278 | NICConf *conf, | |
279 | const char *model, | |
280 | const char *name, | |
281 | void *opaque) | |
282 | { | |
1ceef9f2 | 283 | NetClientState **peers = conf->peers.ncs; |
ebef2c09 | 284 | NICState *nic; |
575a1c0e | 285 | int i, queues = MAX(1, conf->peers.queues); |
ebef2c09 | 286 | |
f394b2e2 | 287 | assert(info->type == NET_CLIENT_DRIVER_NIC); |
ebef2c09 MM |
288 | assert(info->size >= sizeof(NICState)); |
289 | ||
f6b26cf2 JW |
290 | nic = g_malloc0(info->size + sizeof(NetClientState) * queues); |
291 | nic->ncs = (void *)nic + info->size; | |
ebef2c09 MM |
292 | nic->conf = conf; |
293 | nic->opaque = opaque; | |
294 | ||
f6b26cf2 JW |
295 | for (i = 0; i < queues; i++) { |
296 | qemu_net_client_setup(&nic->ncs[i], info, peers[i], model, name, | |
1ceef9f2 JW |
297 | NULL); |
298 | nic->ncs[i].queue_index = i; | |
299 | } | |
300 | ||
ebef2c09 MM |
301 | return nic; |
302 | } | |
303 | ||
1ceef9f2 JW |
304 | NetClientState *qemu_get_subqueue(NICState *nic, int queue_index) |
305 | { | |
f6b26cf2 | 306 | return nic->ncs + queue_index; |
1ceef9f2 JW |
307 | } |
308 | ||
b356f76d JW |
309 | NetClientState *qemu_get_queue(NICState *nic) |
310 | { | |
1ceef9f2 | 311 | return qemu_get_subqueue(nic, 0); |
b356f76d JW |
312 | } |
313 | ||
cc1f0f45 JW |
314 | NICState *qemu_get_nic(NetClientState *nc) |
315 | { | |
1ceef9f2 JW |
316 | NetClientState *nc0 = nc - nc->queue_index; |
317 | ||
f6b26cf2 | 318 | return (NICState *)((void *)nc0 - nc->info->size); |
cc1f0f45 JW |
319 | } |
320 | ||
321 | void *qemu_get_nic_opaque(NetClientState *nc) | |
322 | { | |
323 | NICState *nic = qemu_get_nic(nc); | |
324 | ||
325 | return nic->opaque; | |
326 | } | |
327 | ||
0165daae CL |
328 | NetClientState *qemu_get_peer(NetClientState *nc, int queue_index) |
329 | { | |
330 | assert(nc != NULL); | |
331 | NetClientState *ncs = nc + queue_index; | |
332 | return ncs->peer; | |
333 | } | |
334 | ||
b20c6b9e | 335 | static void qemu_cleanup_net_client(NetClientState *nc) |
63a01ef8 | 336 | { |
35277d14 | 337 | QTAILQ_REMOVE(&net_clients, nc, next); |
63a01ef8 | 338 | |
cc2a9043 AF |
339 | if (nc->info->cleanup) { |
340 | nc->info->cleanup(nc); | |
341 | } | |
a083a89d | 342 | } |
5610c3aa | 343 | |
b20c6b9e | 344 | static void qemu_free_net_client(NetClientState *nc) |
a083a89d | 345 | { |
067404be JK |
346 | if (nc->incoming_queue) { |
347 | qemu_del_net_queue(nc->incoming_queue); | |
a005d073 | 348 | } |
35277d14 SH |
349 | if (nc->peer) { |
350 | nc->peer->peer = NULL; | |
a083a89d | 351 | } |
35277d14 SH |
352 | g_free(nc->name); |
353 | g_free(nc->model); | |
f7860455 JW |
354 | if (nc->destructor) { |
355 | nc->destructor(nc); | |
356 | } | |
63a01ef8 AL |
357 | } |
358 | ||
b20c6b9e | 359 | void qemu_del_net_client(NetClientState *nc) |
a083a89d | 360 | { |
1ceef9f2 JW |
361 | NetClientState *ncs[MAX_QUEUE_NUM]; |
362 | int queues, i; | |
fdccce45 | 363 | NetFilterState *nf, *next; |
1ceef9f2 | 364 | |
f394b2e2 | 365 | assert(nc->info->type != NET_CLIENT_DRIVER_NIC); |
7fb43911 | 366 | |
1ceef9f2 JW |
367 | /* If the NetClientState belongs to a multiqueue backend, we will change all |
368 | * other NetClientStates also. | |
369 | */ | |
370 | queues = qemu_find_net_clients_except(nc->name, ncs, | |
f394b2e2 | 371 | NET_CLIENT_DRIVER_NIC, |
1ceef9f2 JW |
372 | MAX_QUEUE_NUM); |
373 | assert(queues != 0); | |
374 | ||
fdccce45 YH |
375 | QTAILQ_FOREACH_SAFE(nf, &nc->filters, next, next) { |
376 | object_unparent(OBJECT(nf)); | |
377 | } | |
378 | ||
a083a89d | 379 | /* If there is a peer NIC, delete and cleanup client, but do not free. */ |
f394b2e2 | 380 | if (nc->peer && nc->peer->info->type == NET_CLIENT_DRIVER_NIC) { |
cc1f0f45 | 381 | NICState *nic = qemu_get_nic(nc->peer); |
a083a89d MT |
382 | if (nic->peer_deleted) { |
383 | return; | |
384 | } | |
385 | nic->peer_deleted = true; | |
1ceef9f2 JW |
386 | |
387 | for (i = 0; i < queues; i++) { | |
388 | ncs[i]->peer->link_down = true; | |
389 | } | |
390 | ||
35277d14 SH |
391 | if (nc->peer->info->link_status_changed) { |
392 | nc->peer->info->link_status_changed(nc->peer); | |
a083a89d | 393 | } |
1ceef9f2 JW |
394 | |
395 | for (i = 0; i < queues; i++) { | |
396 | qemu_cleanup_net_client(ncs[i]); | |
397 | } | |
398 | ||
a083a89d MT |
399 | return; |
400 | } | |
401 | ||
1ceef9f2 JW |
402 | for (i = 0; i < queues; i++) { |
403 | qemu_cleanup_net_client(ncs[i]); | |
404 | qemu_free_net_client(ncs[i]); | |
405 | } | |
948ecf21 JW |
406 | } |
407 | ||
408 | void qemu_del_nic(NICState *nic) | |
409 | { | |
575a1c0e | 410 | int i, queues = MAX(nic->conf->peers.queues, 1); |
1ceef9f2 | 411 | |
2bc22a58 SZ |
412 | qemu_macaddr_set_free(&nic->conf->macaddr); |
413 | ||
a083a89d | 414 | /* If this is a peer NIC and peer has already been deleted, free it now. */ |
1ceef9f2 JW |
415 | if (nic->peer_deleted) { |
416 | for (i = 0; i < queues; i++) { | |
417 | qemu_free_net_client(qemu_get_subqueue(nic, i)->peer); | |
1a609520 JK |
418 | } |
419 | } | |
1a609520 | 420 | |
1ceef9f2 JW |
421 | for (i = queues - 1; i >= 0; i--) { |
422 | NetClientState *nc = qemu_get_subqueue(nic, i); | |
423 | ||
424 | qemu_cleanup_net_client(nc); | |
425 | qemu_free_net_client(nc); | |
426 | } | |
f6b26cf2 JW |
427 | |
428 | g_free(nic); | |
1a609520 JK |
429 | } |
430 | ||
57f9ef17 MM |
431 | void qemu_foreach_nic(qemu_nic_foreach func, void *opaque) |
432 | { | |
4e68f7a0 | 433 | NetClientState *nc; |
57f9ef17 | 434 | |
94878994 | 435 | QTAILQ_FOREACH(nc, &net_clients, next) { |
f394b2e2 | 436 | if (nc->info->type == NET_CLIENT_DRIVER_NIC) { |
1ceef9f2 JW |
437 | if (nc->queue_index == 0) { |
438 | func(qemu_get_nic(nc), opaque); | |
439 | } | |
57f9ef17 MM |
440 | } |
441 | } | |
57f9ef17 MM |
442 | } |
443 | ||
d6085e3a | 444 | bool qemu_has_ufo(NetClientState *nc) |
1f55ac45 | 445 | { |
d6085e3a | 446 | if (!nc || !nc->info->has_ufo) { |
1f55ac45 VM |
447 | return false; |
448 | } | |
449 | ||
d6085e3a | 450 | return nc->info->has_ufo(nc); |
1f55ac45 VM |
451 | } |
452 | ||
d6085e3a | 453 | bool qemu_has_vnet_hdr(NetClientState *nc) |
1f55ac45 | 454 | { |
d6085e3a | 455 | if (!nc || !nc->info->has_vnet_hdr) { |
1f55ac45 VM |
456 | return false; |
457 | } | |
458 | ||
d6085e3a | 459 | return nc->info->has_vnet_hdr(nc); |
1f55ac45 VM |
460 | } |
461 | ||
d6085e3a | 462 | bool qemu_has_vnet_hdr_len(NetClientState *nc, int len) |
1f55ac45 | 463 | { |
d6085e3a | 464 | if (!nc || !nc->info->has_vnet_hdr_len) { |
1f55ac45 VM |
465 | return false; |
466 | } | |
467 | ||
d6085e3a | 468 | return nc->info->has_vnet_hdr_len(nc, len); |
1f55ac45 VM |
469 | } |
470 | ||
d6085e3a | 471 | void qemu_using_vnet_hdr(NetClientState *nc, bool enable) |
1f55ac45 | 472 | { |
d6085e3a | 473 | if (!nc || !nc->info->using_vnet_hdr) { |
1f55ac45 VM |
474 | return; |
475 | } | |
476 | ||
d6085e3a | 477 | nc->info->using_vnet_hdr(nc, enable); |
1f55ac45 VM |
478 | } |
479 | ||
d6085e3a | 480 | void qemu_set_offload(NetClientState *nc, int csum, int tso4, int tso6, |
1f55ac45 VM |
481 | int ecn, int ufo) |
482 | { | |
d6085e3a | 483 | if (!nc || !nc->info->set_offload) { |
1f55ac45 VM |
484 | return; |
485 | } | |
486 | ||
d6085e3a | 487 | nc->info->set_offload(nc, csum, tso4, tso6, ecn, ufo); |
1f55ac45 VM |
488 | } |
489 | ||
d6085e3a | 490 | void qemu_set_vnet_hdr_len(NetClientState *nc, int len) |
1f55ac45 | 491 | { |
d6085e3a | 492 | if (!nc || !nc->info->set_vnet_hdr_len) { |
1f55ac45 VM |
493 | return; |
494 | } | |
495 | ||
d6b732e9 | 496 | nc->vnet_hdr_len = len; |
d6085e3a | 497 | nc->info->set_vnet_hdr_len(nc, len); |
1f55ac45 VM |
498 | } |
499 | ||
c80cd6bb GK |
500 | int qemu_set_vnet_le(NetClientState *nc, bool is_le) |
501 | { | |
052bd52f | 502 | #ifdef HOST_WORDS_BIGENDIAN |
c80cd6bb GK |
503 | if (!nc || !nc->info->set_vnet_le) { |
504 | return -ENOSYS; | |
505 | } | |
506 | ||
507 | return nc->info->set_vnet_le(nc, is_le); | |
052bd52f MT |
508 | #else |
509 | return 0; | |
510 | #endif | |
c80cd6bb GK |
511 | } |
512 | ||
513 | int qemu_set_vnet_be(NetClientState *nc, bool is_be) | |
514 | { | |
052bd52f MT |
515 | #ifdef HOST_WORDS_BIGENDIAN |
516 | return 0; | |
517 | #else | |
c80cd6bb GK |
518 | if (!nc || !nc->info->set_vnet_be) { |
519 | return -ENOSYS; | |
520 | } | |
521 | ||
522 | return nc->info->set_vnet_be(nc, is_be); | |
052bd52f | 523 | #endif |
c80cd6bb GK |
524 | } |
525 | ||
4e68f7a0 | 526 | int qemu_can_send_packet(NetClientState *sender) |
63a01ef8 | 527 | { |
e1d64c08 HZ |
528 | int vm_running = runstate_is_running(); |
529 | ||
530 | if (!vm_running) { | |
531 | return 0; | |
532 | } | |
533 | ||
a005d073 | 534 | if (!sender->peer) { |
d80b9fc6 MM |
535 | return 1; |
536 | } | |
537 | ||
a005d073 SH |
538 | if (sender->peer->receive_disabled) { |
539 | return 0; | |
540 | } else if (sender->peer->info->can_receive && | |
541 | !sender->peer->info->can_receive(sender->peer)) { | |
542 | return 0; | |
63a01ef8 | 543 | } |
60c07d93 | 544 | return 1; |
63a01ef8 AL |
545 | } |
546 | ||
e64c770d YH |
547 | static ssize_t filter_receive_iov(NetClientState *nc, |
548 | NetFilterDirection direction, | |
549 | NetClientState *sender, | |
550 | unsigned flags, | |
551 | const struct iovec *iov, | |
552 | int iovcnt, | |
553 | NetPacketSent *sent_cb) | |
554 | { | |
555 | ssize_t ret = 0; | |
556 | NetFilterState *nf = NULL; | |
557 | ||
25aaadf0 LZ |
558 | if (direction == NET_FILTER_DIRECTION_TX) { |
559 | QTAILQ_FOREACH(nf, &nc->filters, next) { | |
560 | ret = qemu_netfilter_receive(nf, direction, sender, flags, iov, | |
561 | iovcnt, sent_cb); | |
562 | if (ret) { | |
563 | return ret; | |
564 | } | |
565 | } | |
566 | } else { | |
eae3eb3e | 567 | QTAILQ_FOREACH_REVERSE(nf, &nc->filters, next) { |
25aaadf0 LZ |
568 | ret = qemu_netfilter_receive(nf, direction, sender, flags, iov, |
569 | iovcnt, sent_cb); | |
570 | if (ret) { | |
571 | return ret; | |
572 | } | |
e64c770d YH |
573 | } |
574 | } | |
575 | ||
576 | return ret; | |
577 | } | |
578 | ||
579 | static ssize_t filter_receive(NetClientState *nc, | |
580 | NetFilterDirection direction, | |
581 | NetClientState *sender, | |
582 | unsigned flags, | |
583 | const uint8_t *data, | |
584 | size_t size, | |
585 | NetPacketSent *sent_cb) | |
586 | { | |
587 | struct iovec iov = { | |
588 | .iov_base = (void *)data, | |
589 | .iov_len = size | |
590 | }; | |
591 | ||
592 | return filter_receive_iov(nc, direction, sender, flags, &iov, 1, sent_cb); | |
593 | } | |
594 | ||
35277d14 | 595 | void qemu_purge_queued_packets(NetClientState *nc) |
8cad5516 | 596 | { |
35277d14 | 597 | if (!nc->peer) { |
d80b9fc6 | 598 | return; |
9a6ecb30 | 599 | } |
d80b9fc6 | 600 | |
067404be | 601 | qemu_net_queue_purge(nc->peer->incoming_queue, nc); |
8cad5516 MM |
602 | } |
603 | ||
ca77d85e | 604 | void qemu_flush_or_purge_queued_packets(NetClientState *nc, bool purge) |
e94667b9 | 605 | { |
35277d14 | 606 | nc->receive_disabled = 0; |
9a6ecb30 | 607 | |
f394b2e2 | 608 | if (nc->peer && nc->peer->info->type == NET_CLIENT_DRIVER_HUBPORT) { |
199ee608 LR |
609 | if (net_hub_flush(nc->peer)) { |
610 | qemu_notify_event(); | |
611 | } | |
199ee608 | 612 | } |
067404be | 613 | if (qemu_net_queue_flush(nc->incoming_queue)) { |
987a9b48 PB |
614 | /* We emptied the queue successfully, signal to the IO thread to repoll |
615 | * the file descriptor (for tap, for example). | |
616 | */ | |
617 | qemu_notify_event(); | |
ca77d85e MT |
618 | } else if (purge) { |
619 | /* Unable to empty the queue, purge remaining packets */ | |
5fe19fb8 | 620 | qemu_net_queue_purge(nc->incoming_queue, nc->peer); |
987a9b48 | 621 | } |
e94667b9 MM |
622 | } |
623 | ||
ca77d85e MT |
624 | void qemu_flush_queued_packets(NetClientState *nc) |
625 | { | |
626 | qemu_flush_or_purge_queued_packets(nc, false); | |
627 | } | |
628 | ||
4e68f7a0 | 629 | static ssize_t qemu_send_packet_async_with_flags(NetClientState *sender, |
ca77d175 MM |
630 | unsigned flags, |
631 | const uint8_t *buf, int size, | |
632 | NetPacketSent *sent_cb) | |
764a4d1d | 633 | { |
9a6ecb30 | 634 | NetQueue *queue; |
e64c770d | 635 | int ret; |
436e5e53 | 636 | |
63a01ef8 | 637 | #ifdef DEBUG_NET |
d80b9fc6 | 638 | printf("qemu_send_packet_async:\n"); |
b42581f5 | 639 | qemu_hexdump(stdout, "net", buf, size); |
63a01ef8 | 640 | #endif |
f3b6c7fc | 641 | |
a005d073 | 642 | if (sender->link_down || !sender->peer) { |
9a6ecb30 MM |
643 | return size; |
644 | } | |
645 | ||
e64c770d YH |
646 | /* Let filters handle the packet first */ |
647 | ret = filter_receive(sender, NET_FILTER_DIRECTION_TX, | |
648 | sender, flags, buf, size, sent_cb); | |
649 | if (ret) { | |
650 | return ret; | |
651 | } | |
652 | ||
653 | ret = filter_receive(sender->peer, NET_FILTER_DIRECTION_RX, | |
654 | sender, flags, buf, size, sent_cb); | |
655 | if (ret) { | |
656 | return ret; | |
657 | } | |
658 | ||
067404be | 659 | queue = sender->peer->incoming_queue; |
9a6ecb30 | 660 | |
ca77d175 MM |
661 | return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb); |
662 | } | |
663 | ||
4e68f7a0 | 664 | ssize_t qemu_send_packet_async(NetClientState *sender, |
ca77d175 MM |
665 | const uint8_t *buf, int size, |
666 | NetPacketSent *sent_cb) | |
667 | { | |
668 | return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE, | |
669 | buf, size, sent_cb); | |
f3b6c7fc MM |
670 | } |
671 | ||
625a526b | 672 | ssize_t qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size) |
f3b6c7fc | 673 | { |
625a526b | 674 | return qemu_send_packet_async(nc, buf, size, NULL); |
63a01ef8 AL |
675 | } |
676 | ||
35277d14 | 677 | ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size) |
ca77d175 | 678 | { |
35277d14 | 679 | return qemu_send_packet_async_with_flags(nc, QEMU_NET_PACKET_FLAG_RAW, |
ca77d175 MM |
680 | buf, size, NULL); |
681 | } | |
682 | ||
35277d14 | 683 | static ssize_t nc_sendv_compat(NetClientState *nc, const struct iovec *iov, |
fefe2a78 | 684 | int iovcnt, unsigned flags) |
fbe78f4f | 685 | { |
74044c8f | 686 | uint8_t *buf = NULL; |
fefe2a78 | 687 | uint8_t *buffer; |
ce053661 | 688 | size_t offset; |
74044c8f | 689 | ssize_t ret; |
fbe78f4f | 690 | |
fefe2a78 YH |
691 | if (iovcnt == 1) { |
692 | buffer = iov[0].iov_base; | |
693 | offset = iov[0].iov_len; | |
694 | } else { | |
47f9f158 PL |
695 | offset = iov_size(iov, iovcnt); |
696 | if (offset > NET_BUFSIZE) { | |
697 | return -1; | |
698 | } | |
699 | buf = g_malloc(offset); | |
fefe2a78 | 700 | buffer = buf; |
47f9f158 | 701 | offset = iov_to_buf(iov, iovcnt, 0, buf, offset); |
fefe2a78 | 702 | } |
fbe78f4f | 703 | |
fefe2a78 | 704 | if (flags & QEMU_NET_PACKET_FLAG_RAW && nc->info->receive_raw) { |
74044c8f | 705 | ret = nc->info->receive_raw(nc, buffer, offset); |
fefe2a78 | 706 | } else { |
74044c8f | 707 | ret = nc->info->receive(nc, buffer, offset); |
fefe2a78 | 708 | } |
74044c8f PD |
709 | |
710 | g_free(buf); | |
711 | return ret; | |
fbe78f4f AL |
712 | } |
713 | ||
25c01bd1 JW |
714 | static ssize_t qemu_deliver_packet_iov(NetClientState *sender, |
715 | unsigned flags, | |
716 | const struct iovec *iov, | |
717 | int iovcnt, | |
718 | void *opaque) | |
9a6ecb30 | 719 | { |
35277d14 | 720 | NetClientState *nc = opaque; |
c67f5dc1 | 721 | int ret; |
9a6ecb30 | 722 | |
1592a994 | 723 | |
35277d14 | 724 | if (nc->link_down) { |
25c01bd1 | 725 | return iov_size(iov, iovcnt); |
9a6ecb30 MM |
726 | } |
727 | ||
c67f5dc1 SH |
728 | if (nc->receive_disabled) { |
729 | return 0; | |
730 | } | |
731 | ||
ca1ee3d6 | 732 | if (nc->info->receive_iov && !(flags & QEMU_NET_PACKET_FLAG_RAW)) { |
c67f5dc1 | 733 | ret = nc->info->receive_iov(nc, iov, iovcnt); |
9a6ecb30 | 734 | } else { |
fefe2a78 | 735 | ret = nc_sendv_compat(nc, iov, iovcnt, flags); |
c67f5dc1 SH |
736 | } |
737 | ||
738 | if (ret == 0) { | |
739 | nc->receive_disabled = 1; | |
e94667b9 | 740 | } |
c67f5dc1 SH |
741 | |
742 | return ret; | |
e94667b9 MM |
743 | } |
744 | ||
4e68f7a0 | 745 | ssize_t qemu_sendv_packet_async(NetClientState *sender, |
f3b6c7fc MM |
746 | const struct iovec *iov, int iovcnt, |
747 | NetPacketSent *sent_cb) | |
e94667b9 | 748 | { |
9a6ecb30 | 749 | NetQueue *queue; |
25c01bd1 | 750 | size_t size = iov_size(iov, iovcnt); |
e64c770d | 751 | int ret; |
9a6ecb30 | 752 | |
25c01bd1 JW |
753 | if (size > NET_BUFSIZE) { |
754 | return size; | |
755 | } | |
756 | ||
a005d073 | 757 | if (sender->link_down || !sender->peer) { |
25c01bd1 | 758 | return size; |
e94667b9 MM |
759 | } |
760 | ||
e64c770d YH |
761 | /* Let filters handle the packet first */ |
762 | ret = filter_receive_iov(sender, NET_FILTER_DIRECTION_TX, sender, | |
763 | QEMU_NET_PACKET_FLAG_NONE, iov, iovcnt, sent_cb); | |
764 | if (ret) { | |
765 | return ret; | |
766 | } | |
767 | ||
768 | ret = filter_receive_iov(sender->peer, NET_FILTER_DIRECTION_RX, sender, | |
769 | QEMU_NET_PACKET_FLAG_NONE, iov, iovcnt, sent_cb); | |
770 | if (ret) { | |
771 | return ret; | |
772 | } | |
773 | ||
067404be | 774 | queue = sender->peer->incoming_queue; |
9a6ecb30 | 775 | |
c0b8e49c MM |
776 | return qemu_net_queue_send_iov(queue, sender, |
777 | QEMU_NET_PACKET_FLAG_NONE, | |
778 | iov, iovcnt, sent_cb); | |
fbe78f4f AL |
779 | } |
780 | ||
f3b6c7fc | 781 | ssize_t |
35277d14 | 782 | qemu_sendv_packet(NetClientState *nc, const struct iovec *iov, int iovcnt) |
f3b6c7fc | 783 | { |
35277d14 | 784 | return qemu_sendv_packet_async(nc, iov, iovcnt, NULL); |
63a01ef8 AL |
785 | } |
786 | ||
4e68f7a0 | 787 | NetClientState *qemu_find_netdev(const char *id) |
5869c4d5 | 788 | { |
35277d14 | 789 | NetClientState *nc; |
5869c4d5 | 790 | |
35277d14 | 791 | QTAILQ_FOREACH(nc, &net_clients, next) { |
f394b2e2 | 792 | if (nc->info->type == NET_CLIENT_DRIVER_NIC) |
85dde9a9 | 793 | continue; |
35277d14 SH |
794 | if (!strcmp(nc->name, id)) { |
795 | return nc; | |
5869c4d5 MM |
796 | } |
797 | } | |
798 | ||
799 | return NULL; | |
800 | } | |
801 | ||
6c51ae73 | 802 | int qemu_find_net_clients_except(const char *id, NetClientState **ncs, |
f394b2e2 | 803 | NetClientDriver type, int max) |
6c51ae73 JW |
804 | { |
805 | NetClientState *nc; | |
806 | int ret = 0; | |
807 | ||
808 | QTAILQ_FOREACH(nc, &net_clients, next) { | |
809 | if (nc->info->type == type) { | |
810 | continue; | |
811 | } | |
40d19394 | 812 | if (!id || !strcmp(nc->name, id)) { |
6c51ae73 JW |
813 | if (ret < max) { |
814 | ncs[ret] = nc; | |
815 | } | |
816 | ret++; | |
817 | } | |
818 | } | |
819 | ||
820 | return ret; | |
821 | } | |
822 | ||
7697079b AL |
823 | static int nic_get_free_idx(void) |
824 | { | |
825 | int index; | |
826 | ||
827 | for (index = 0; index < MAX_NICS; index++) | |
828 | if (!nd_table[index].used) | |
829 | return index; | |
830 | return -1; | |
831 | } | |
832 | ||
07caea31 MA |
833 | int qemu_show_nic_models(const char *arg, const char *const *models) |
834 | { | |
835 | int i; | |
836 | ||
c8057f95 | 837 | if (!arg || !is_help_option(arg)) { |
07caea31 | 838 | return 0; |
c8057f95 | 839 | } |
07caea31 | 840 | |
7b71e03a TH |
841 | printf("Supported NIC models:\n"); |
842 | for (i = 0 ; models[i]; i++) { | |
843 | printf("%s\n", models[i]); | |
844 | } | |
07caea31 MA |
845 | return 1; |
846 | } | |
847 | ||
d07f22c5 AL |
848 | void qemu_check_nic_model(NICInfo *nd, const char *model) |
849 | { | |
850 | const char *models[2]; | |
851 | ||
852 | models[0] = model; | |
853 | models[1] = NULL; | |
854 | ||
07caea31 MA |
855 | if (qemu_show_nic_models(nd->model, models)) |
856 | exit(0); | |
857 | if (qemu_find_nic_model(nd, models, model) < 0) | |
858 | exit(1); | |
d07f22c5 AL |
859 | } |
860 | ||
07caea31 MA |
861 | int qemu_find_nic_model(NICInfo *nd, const char * const *models, |
862 | const char *default_model) | |
d07f22c5 | 863 | { |
07caea31 | 864 | int i; |
d07f22c5 AL |
865 | |
866 | if (!nd->model) | |
7267c094 | 867 | nd->model = g_strdup(default_model); |
d07f22c5 | 868 | |
07caea31 MA |
869 | for (i = 0 ; models[i]; i++) { |
870 | if (strcmp(nd->model, models[i]) == 0) | |
871 | return i; | |
d07f22c5 AL |
872 | } |
873 | ||
6daf194d | 874 | error_report("Unsupported NIC model: %s", nd->model); |
07caea31 | 875 | return -1; |
d07f22c5 AL |
876 | } |
877 | ||
cebea510 | 878 | static int net_init_nic(const Netdev *netdev, const char *name, |
a30ecde6 | 879 | NetClientState *peer, Error **errp) |
f83c6e10 MM |
880 | { |
881 | int idx; | |
882 | NICInfo *nd; | |
2456f36f LE |
883 | const NetLegacyNicOptions *nic; |
884 | ||
f394b2e2 EB |
885 | assert(netdev->type == NET_CLIENT_DRIVER_NIC); |
886 | nic = &netdev->u.nic; | |
f83c6e10 MM |
887 | |
888 | idx = nic_get_free_idx(); | |
889 | if (idx == -1 || nb_nics >= MAX_NICS) { | |
66308868 | 890 | error_setg(errp, "too many NICs"); |
f83c6e10 MM |
891 | return -1; |
892 | } | |
893 | ||
894 | nd = &nd_table[idx]; | |
895 | ||
896 | memset(nd, 0, sizeof(*nd)); | |
897 | ||
2456f36f LE |
898 | if (nic->has_netdev) { |
899 | nd->netdev = qemu_find_netdev(nic->netdev); | |
5869c4d5 | 900 | if (!nd->netdev) { |
66308868 | 901 | error_setg(errp, "netdev '%s' not found", nic->netdev); |
5869c4d5 MM |
902 | return -1; |
903 | } | |
904 | } else { | |
d33d93b2 SH |
905 | assert(peer); |
906 | nd->netdev = peer; | |
5869c4d5 | 907 | } |
c64f50d1 | 908 | nd->name = g_strdup(name); |
2456f36f LE |
909 | if (nic->has_model) { |
910 | nd->model = g_strdup(nic->model); | |
f83c6e10 | 911 | } |
2456f36f LE |
912 | if (nic->has_addr) { |
913 | nd->devaddr = g_strdup(nic->addr); | |
f83c6e10 MM |
914 | } |
915 | ||
2456f36f LE |
916 | if (nic->has_macaddr && |
917 | net_parse_macaddr(nd->macaddr.a, nic->macaddr) < 0) { | |
66308868 | 918 | error_setg(errp, "invalid syntax for ethernet address"); |
f83c6e10 MM |
919 | return -1; |
920 | } | |
d60b20cf DK |
921 | if (nic->has_macaddr && |
922 | is_multicast_ether_addr(nd->macaddr.a)) { | |
66308868 MA |
923 | error_setg(errp, |
924 | "NIC cannot have multicast MAC address (odd 1st byte)"); | |
d60b20cf DK |
925 | return -1; |
926 | } | |
6eed1856 | 927 | qemu_macaddr_default_if_unset(&nd->macaddr); |
f83c6e10 | 928 | |
2456f36f LE |
929 | if (nic->has_vectors) { |
930 | if (nic->vectors > 0x7ffffff) { | |
66308868 | 931 | error_setg(errp, "invalid # of vectors: %"PRIu32, nic->vectors); |
2456f36f LE |
932 | return -1; |
933 | } | |
934 | nd->nvectors = nic->vectors; | |
935 | } else { | |
936 | nd->nvectors = DEV_NVECTORS_UNSPECIFIED; | |
f83c6e10 MM |
937 | } |
938 | ||
939 | nd->used = 1; | |
f83c6e10 MM |
940 | nb_nics++; |
941 | ||
942 | return idx; | |
943 | } | |
944 | ||
6687b79d | 945 | |
f394b2e2 | 946 | static int (* const net_client_init_fun[NET_CLIENT_DRIVER__MAX])( |
cebea510 | 947 | const Netdev *netdev, |
6687b79d | 948 | const char *name, |
a30ecde6 | 949 | NetClientState *peer, Error **errp) = { |
f394b2e2 | 950 | [NET_CLIENT_DRIVER_NIC] = net_init_nic, |
ec302ffd | 951 | #ifdef CONFIG_SLIRP |
f394b2e2 | 952 | [NET_CLIENT_DRIVER_USER] = net_init_slirp, |
2944e4ec | 953 | #endif |
f394b2e2 EB |
954 | [NET_CLIENT_DRIVER_TAP] = net_init_tap, |
955 | [NET_CLIENT_DRIVER_SOCKET] = net_init_socket, | |
dd51058d | 956 | #ifdef CONFIG_VDE |
f394b2e2 | 957 | [NET_CLIENT_DRIVER_VDE] = net_init_vde, |
58952137 VM |
958 | #endif |
959 | #ifdef CONFIG_NETMAP | |
f394b2e2 | 960 | [NET_CLIENT_DRIVER_NETMAP] = net_init_netmap, |
dd51058d | 961 | #endif |
2944e4ec | 962 | #ifdef CONFIG_NET_BRIDGE |
f394b2e2 | 963 | [NET_CLIENT_DRIVER_BRIDGE] = net_init_bridge, |
6687b79d | 964 | #endif |
f394b2e2 | 965 | [NET_CLIENT_DRIVER_HUBPORT] = net_init_hubport, |
56f41de7 | 966 | #ifdef CONFIG_VHOST_NET_USER |
f394b2e2 | 967 | [NET_CLIENT_DRIVER_VHOST_USER] = net_init_vhost_user, |
03ce5744 | 968 | #endif |
1e0a84ea CL |
969 | #ifdef CONFIG_VHOST_NET_VDPA |
970 | [NET_CLIENT_DRIVER_VHOST_VDPA] = net_init_vhost_vdpa, | |
971 | #endif | |
015a33bd | 972 | #ifdef CONFIG_L2TPV3 |
f394b2e2 | 973 | [NET_CLIENT_DRIVER_L2TPV3] = net_init_l2tpv3, |
3fb69aa1 | 974 | #endif |
f83c6e10 MM |
975 | }; |
976 | ||
6687b79d | 977 | |
71830d84 | 978 | static int net_client_init1(const Netdev *netdev, bool is_netdev, Error **errp) |
f83c6e10 | 979 | { |
4ef0defb | 980 | NetClientState *peer = NULL; |
f83c6e10 | 981 | |
5294e2c7 | 982 | if (is_netdev) { |
857d2087 | 983 | if (netdev->type == NET_CLIENT_DRIVER_NIC || |
f394b2e2 | 984 | !net_client_init_fun[netdev->type]) { |
c6bd8c70 MA |
985 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "type", |
986 | "a netdev backend type"); | |
f6b134ac MM |
987 | return -1; |
988 | } | |
6687b79d | 989 | } else { |
71830d84 | 990 | if (netdev->type == NET_CLIENT_DRIVER_NONE) { |
d139e9a6 | 991 | return 0; /* nothing to do */ |
1e81aba5 | 992 | } |
71830d84 TH |
993 | if (netdev->type == NET_CLIENT_DRIVER_HUBPORT || |
994 | !net_client_init_fun[netdev->type]) { | |
d139e9a6 SH |
995 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "type", |
996 | "a net backend type (maybe it is not compiled " | |
997 | "into this binary)"); | |
998 | return -1; | |
999 | } | |
f6b134ac | 1000 | |
af1a5c3e | 1001 | /* Do not add to a hub if it's a nic with a netdev= parameter. */ |
f394b2e2 | 1002 | if (netdev->type != NET_CLIENT_DRIVER_NIC || |
71830d84 | 1003 | !netdev->u.nic.has_netdev) { |
af1a5c3e | 1004 | peer = net_hub_add_port(0, NULL, NULL); |
a2dbe135 | 1005 | } |
4ef0defb | 1006 | } |
6687b79d | 1007 | |
9d903f30 | 1008 | if (net_client_init_fun[netdev->type](netdev, netdev->id, peer, errp) < 0) { |
4ef0defb SH |
1009 | /* FIXME drop when all init functions store an Error */ |
1010 | if (errp && !*errp) { | |
1011 | error_setg(errp, QERR_DEVICE_INIT_FAILED, | |
977c736f | 1012 | NetClientDriver_str(netdev->type)); |
f6b134ac | 1013 | } |
4ef0defb | 1014 | return -1; |
f6b134ac | 1015 | } |
08712fcb EB |
1016 | |
1017 | if (is_netdev) { | |
1018 | NetClientState *nc; | |
1019 | ||
1020 | nc = qemu_find_netdev(netdev->id); | |
1021 | assert(nc); | |
1022 | nc->is_netdev = true; | |
1023 | } | |
1024 | ||
6687b79d LE |
1025 | return 0; |
1026 | } | |
1027 | ||
547203ea TH |
1028 | static void show_netdevs(void) |
1029 | { | |
1030 | int idx; | |
1031 | const char *available_netdevs[] = { | |
1032 | "socket", | |
1033 | "hubport", | |
1034 | "tap", | |
1035 | #ifdef CONFIG_SLIRP | |
1036 | "user", | |
1037 | #endif | |
1038 | #ifdef CONFIG_L2TPV3 | |
1039 | "l2tpv3", | |
1040 | #endif | |
1041 | #ifdef CONFIG_VDE | |
1042 | "vde", | |
1043 | #endif | |
1044 | #ifdef CONFIG_NET_BRIDGE | |
1045 | "bridge", | |
1046 | #endif | |
1047 | #ifdef CONFIG_NETMAP | |
1048 | "netmap", | |
1049 | #endif | |
1050 | #ifdef CONFIG_POSIX | |
1051 | "vhost-user", | |
1052 | #endif | |
1053 | }; | |
1054 | ||
1055 | printf("Available netdev backend types:\n"); | |
1056 | for (idx = 0; idx < ARRAY_SIZE(available_netdevs); idx++) { | |
1057 | puts(available_netdevs[idx]); | |
1058 | } | |
1059 | } | |
f6b134ac | 1060 | |
aa09a485 | 1061 | static int net_client_init(QemuOpts *opts, bool is_netdev, Error **errp) |
6687b79d | 1062 | { |
c1112b2d | 1063 | gchar **substrings = NULL; |
71830d84 | 1064 | Netdev *object = NULL; |
6687b79d | 1065 | int ret = -1; |
09204eac | 1066 | Visitor *v = opts_visitor_new(opts); |
f83c6e10 | 1067 | |
8b43f964 LM |
1068 | const char *type = qemu_opt_get(opts, "type"); |
1069 | ||
1070 | if (is_netdev && type && is_help_option(type)) { | |
547203ea TH |
1071 | show_netdevs(); |
1072 | exit(0); | |
1073 | } else { | |
7aac531e | 1074 | /* Parse convenience option format ip6-net=fec0::0[/64] */ |
891a2bb5 | 1075 | const char *ip6_net = qemu_opt_get(opts, "ipv6-net"); |
7aac531e YB |
1076 | |
1077 | if (ip6_net) { | |
c1112b2d SG |
1078 | char *prefix_addr; |
1079 | unsigned long prefix_len = 64; /* Default 64bit prefix length. */ | |
1080 | ||
1081 | substrings = g_strsplit(ip6_net, "/", 2); | |
1082 | if (!substrings || !substrings[0]) { | |
1083 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "ipv6-net", | |
1084 | "a valid IPv6 prefix"); | |
1085 | goto out; | |
1086 | } | |
1087 | ||
1088 | prefix_addr = substrings[0]; | |
7aac531e | 1089 | |
33c9642f VSO |
1090 | /* Handle user-specified prefix length. */ |
1091 | if (substrings[1] && | |
1092 | qemu_strtoul(substrings[1], NULL, 10, &prefix_len)) | |
1093 | { | |
1094 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, | |
1095 | "ipv6-prefixlen", "a number"); | |
1096 | goto out; | |
7aac531e | 1097 | } |
c1112b2d SG |
1098 | |
1099 | qemu_opt_set(opts, "ipv6-prefix", prefix_addr, &error_abort); | |
1100 | qemu_opt_set_number(opts, "ipv6-prefixlen", prefix_len, | |
1101 | &error_abort); | |
891a2bb5 | 1102 | qemu_opt_unset(opts, "ipv6-net"); |
7aac531e YB |
1103 | } |
1104 | } | |
1105 | ||
71830d84 TH |
1106 | /* Create an ID for -net if the user did not specify one */ |
1107 | if (!is_netdev && !qemu_opts_id(opts)) { | |
1108 | static int idx; | |
1109 | qemu_opts_set_id(opts, g_strdup_printf("__org.qemu.net%i", idx++)); | |
f83c6e10 MM |
1110 | } |
1111 | ||
14217038 MA |
1112 | if (visit_type_Netdev(v, NULL, &object, errp)) { |
1113 | ret = net_client_init1(object, is_netdev, errp); | |
6687b79d LE |
1114 | } |
1115 | ||
71830d84 | 1116 | qapi_free_Netdev(object); |
6687b79d | 1117 | |
21c520d0 | 1118 | out: |
c1112b2d | 1119 | g_strfreev(substrings); |
09204eac | 1120 | visit_free(v); |
6687b79d | 1121 | return ret; |
f83c6e10 MM |
1122 | } |
1123 | ||
928059a3 LC |
1124 | void netdev_add(QemuOpts *opts, Error **errp) |
1125 | { | |
0e55c381 | 1126 | net_client_init(opts, true, errp); |
928059a3 LC |
1127 | } |
1128 | ||
db2a380c | 1129 | void qmp_netdev_add(Netdev *netdev, Error **errp) |
ae82d324 | 1130 | { |
08712fcb | 1131 | net_client_init1(netdev, true, errp); |
ae82d324 MA |
1132 | } |
1133 | ||
5f964155 | 1134 | void qmp_netdev_del(const char *id, Error **errp) |
ae82d324 | 1135 | { |
35277d14 | 1136 | NetClientState *nc; |
ae82d324 | 1137 | |
35277d14 SH |
1138 | nc = qemu_find_netdev(id); |
1139 | if (!nc) { | |
75158ebb MA |
1140 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
1141 | "Device '%s' not found", id); | |
5f964155 | 1142 | return; |
ae82d324 | 1143 | } |
5f964155 | 1144 | |
08712fcb | 1145 | if (!nc->is_netdev) { |
645c9496 SH |
1146 | error_setg(errp, "Device '%s' is not a netdev", id); |
1147 | return; | |
1148 | } | |
1149 | ||
b20c6b9e | 1150 | qemu_del_net_client(nc); |
ae82d324 MA |
1151 | } |
1152 | ||
aa9156f4 HZ |
1153 | static void netfilter_print_info(Monitor *mon, NetFilterState *nf) |
1154 | { | |
1155 | char *str; | |
1156 | ObjectProperty *prop; | |
1157 | ObjectPropertyIterator iter; | |
3b098d56 | 1158 | Visitor *v; |
aa9156f4 HZ |
1159 | |
1160 | /* generate info str */ | |
1161 | object_property_iter_init(&iter, OBJECT(nf)); | |
1162 | while ((prop = object_property_iter_next(&iter))) { | |
1163 | if (!strcmp(prop->name, "type")) { | |
1164 | continue; | |
1165 | } | |
3b098d56 | 1166 | v = string_output_visitor_new(false, &str); |
5325cc34 | 1167 | object_property_get(OBJECT(nf), prop->name, v, NULL); |
3b098d56 EB |
1168 | visit_complete(v, &str); |
1169 | visit_free(v); | |
aa9156f4 HZ |
1170 | monitor_printf(mon, ",%s=%s", prop->name, str); |
1171 | g_free(str); | |
1172 | } | |
1173 | monitor_printf(mon, "\n"); | |
1174 | } | |
1175 | ||
1a859593 | 1176 | void print_net_client(Monitor *mon, NetClientState *nc) |
44e798d3 | 1177 | { |
a4960f52 YH |
1178 | NetFilterState *nf; |
1179 | ||
1ceef9f2 JW |
1180 | monitor_printf(mon, "%s: index=%d,type=%s,%s\n", nc->name, |
1181 | nc->queue_index, | |
977c736f | 1182 | NetClientDriver_str(nc->info->type), |
1ceef9f2 | 1183 | nc->info_str); |
a4960f52 YH |
1184 | if (!QTAILQ_EMPTY(&nc->filters)) { |
1185 | monitor_printf(mon, "filters:\n"); | |
1186 | } | |
1187 | QTAILQ_FOREACH(nf, &nc->filters, next) { | |
7a309cc9 MA |
1188 | monitor_printf(mon, " - %s: type=%s", |
1189 | object_get_canonical_path_component(OBJECT(nf)), | |
aa9156f4 HZ |
1190 | object_get_typename(OBJECT(nf))); |
1191 | netfilter_print_info(mon, nf); | |
a4960f52 | 1192 | } |
44e798d3 JK |
1193 | } |
1194 | ||
b1be4280 AK |
1195 | RxFilterInfoList *qmp_query_rx_filter(bool has_name, const char *name, |
1196 | Error **errp) | |
1197 | { | |
1198 | NetClientState *nc; | |
1199 | RxFilterInfoList *filter_list = NULL, *last_entry = NULL; | |
1200 | ||
1201 | QTAILQ_FOREACH(nc, &net_clients, next) { | |
1202 | RxFilterInfoList *entry; | |
1203 | RxFilterInfo *info; | |
1204 | ||
1205 | if (has_name && strcmp(nc->name, name) != 0) { | |
1206 | continue; | |
1207 | } | |
1208 | ||
1209 | /* only query rx-filter information of NIC */ | |
f394b2e2 | 1210 | if (nc->info->type != NET_CLIENT_DRIVER_NIC) { |
b1be4280 AK |
1211 | if (has_name) { |
1212 | error_setg(errp, "net client(%s) isn't a NIC", name); | |
9083da1d | 1213 | return NULL; |
b1be4280 AK |
1214 | } |
1215 | continue; | |
1216 | } | |
1217 | ||
5320c2ca VY |
1218 | /* only query information on queue 0 since the info is per nic, |
1219 | * not per queue | |
1220 | */ | |
1221 | if (nc->queue_index != 0) | |
1222 | continue; | |
1223 | ||
b1be4280 AK |
1224 | if (nc->info->query_rx_filter) { |
1225 | info = nc->info->query_rx_filter(nc); | |
1226 | entry = g_malloc0(sizeof(*entry)); | |
1227 | entry->value = info; | |
1228 | ||
1229 | if (!filter_list) { | |
1230 | filter_list = entry; | |
1231 | } else { | |
1232 | last_entry->next = entry; | |
1233 | } | |
1234 | last_entry = entry; | |
1235 | } else if (has_name) { | |
1236 | error_setg(errp, "net client(%s) doesn't support" | |
1237 | " rx-filter querying", name); | |
9083da1d | 1238 | return NULL; |
b1be4280 | 1239 | } |
638fb141 MA |
1240 | |
1241 | if (has_name) { | |
1242 | break; | |
1243 | } | |
b1be4280 AK |
1244 | } |
1245 | ||
9083da1d | 1246 | if (filter_list == NULL && has_name) { |
b1be4280 AK |
1247 | error_setg(errp, "invalid net client name: %s", name); |
1248 | } | |
1249 | ||
1250 | return filter_list; | |
1251 | } | |
1252 | ||
1ce6be24 | 1253 | void hmp_info_network(Monitor *mon, const QDict *qdict) |
63a01ef8 | 1254 | { |
35277d14 | 1255 | NetClientState *nc, *peer; |
f394b2e2 | 1256 | NetClientDriver type; |
63a01ef8 | 1257 | |
1a859593 ZYW |
1258 | net_hub_info(mon); |
1259 | ||
35277d14 SH |
1260 | QTAILQ_FOREACH(nc, &net_clients, next) { |
1261 | peer = nc->peer; | |
1262 | type = nc->info->type; | |
5610c3aa | 1263 | |
1a859593 ZYW |
1264 | /* Skip if already printed in hub info */ |
1265 | if (net_hub_id_for_client(nc, NULL) == 0) { | |
1266 | continue; | |
5610c3aa | 1267 | } |
1a859593 | 1268 | |
f394b2e2 | 1269 | if (!peer || type == NET_CLIENT_DRIVER_NIC) { |
35277d14 | 1270 | print_net_client(mon, nc); |
19061e63 | 1271 | } /* else it's a netdev connected to a NIC, printed with the NIC */ |
f394b2e2 | 1272 | if (peer && type == NET_CLIENT_DRIVER_NIC) { |
1a859593 | 1273 | monitor_printf(mon, " \\ "); |
44e798d3 | 1274 | print_net_client(mon, peer); |
a0104e0e | 1275 | } |
a0104e0e | 1276 | } |
63a01ef8 AL |
1277 | } |
1278 | ||
5fbba3d6 ZC |
1279 | void colo_notify_filters_event(int event, Error **errp) |
1280 | { | |
1281 | NetClientState *nc; | |
1282 | NetFilterState *nf; | |
1283 | NetFilterClass *nfc = NULL; | |
1284 | Error *local_err = NULL; | |
1285 | ||
1286 | QTAILQ_FOREACH(nc, &net_clients, next) { | |
1287 | QTAILQ_FOREACH(nf, &nc->filters, next) { | |
1288 | nfc = NETFILTER_GET_CLASS(OBJECT(nf)); | |
1289 | nfc->handle_event(nf, event, &local_err); | |
1290 | if (local_err) { | |
1291 | error_propagate(errp, local_err); | |
1292 | return; | |
1293 | } | |
1294 | } | |
1295 | } | |
1296 | } | |
1297 | ||
4b37156c | 1298 | void qmp_set_link(const char *name, bool up, Error **errp) |
436e5e53 | 1299 | { |
1ceef9f2 JW |
1300 | NetClientState *ncs[MAX_QUEUE_NUM]; |
1301 | NetClientState *nc; | |
1302 | int queues, i; | |
436e5e53 | 1303 | |
1ceef9f2 | 1304 | queues = qemu_find_net_clients_except(name, ncs, |
f394b2e2 | 1305 | NET_CLIENT_DRIVER__MAX, |
1ceef9f2 JW |
1306 | MAX_QUEUE_NUM); |
1307 | ||
1308 | if (queues == 0) { | |
75158ebb MA |
1309 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
1310 | "Device '%s' not found", name); | |
4b37156c | 1311 | return; |
436e5e53 | 1312 | } |
1ceef9f2 | 1313 | nc = ncs[0]; |
436e5e53 | 1314 | |
1ceef9f2 JW |
1315 | for (i = 0; i < queues; i++) { |
1316 | ncs[i]->link_down = !up; | |
1317 | } | |
436e5e53 | 1318 | |
35277d14 SH |
1319 | if (nc->info->link_status_changed) { |
1320 | nc->info->link_status_changed(nc); | |
665a3b07 | 1321 | } |
ab1cbe1c | 1322 | |
02d38fcb VY |
1323 | if (nc->peer) { |
1324 | /* Change peer link only if the peer is NIC and then notify peer. | |
1325 | * If the peer is a HUBPORT or a backend, we do not change the | |
1326 | * link status. | |
1327 | * | |
af1a5c3e | 1328 | * This behavior is compatible with qemu hubs where there could be |
02d38fcb VY |
1329 | * multiple clients that can still communicate with each other in |
1330 | * disconnected mode. For now maintain this compatibility. | |
1331 | */ | |
f394b2e2 | 1332 | if (nc->peer->info->type == NET_CLIENT_DRIVER_NIC) { |
02d38fcb VY |
1333 | for (i = 0; i < queues; i++) { |
1334 | ncs[i]->peer->link_down = !up; | |
1335 | } | |
1336 | } | |
1337 | if (nc->peer->info->link_status_changed) { | |
1338 | nc->peer->info->link_status_changed(nc->peer); | |
1339 | } | |
ab1cbe1c | 1340 | } |
436e5e53 AL |
1341 | } |
1342 | ||
ca77d85e MT |
1343 | static void net_vm_change_state_handler(void *opaque, int running, |
1344 | RunState state) | |
1345 | { | |
625de449 FZ |
1346 | NetClientState *nc; |
1347 | NetClientState *tmp; | |
ca77d85e | 1348 | |
625de449 FZ |
1349 | QTAILQ_FOREACH_SAFE(nc, &net_clients, next, tmp) { |
1350 | if (running) { | |
1351 | /* Flush queued packets and wake up backends. */ | |
1352 | if (nc->peer && qemu_can_send_packet(nc)) { | |
1353 | qemu_flush_queued_packets(nc->peer); | |
1354 | } | |
1355 | } else { | |
1356 | /* Complete all queued packets, to guarantee we don't modify | |
1357 | * state later when VM is not running. | |
1358 | */ | |
ca77d85e MT |
1359 | qemu_flush_or_purge_queued_packets(nc, true); |
1360 | } | |
1361 | } | |
1362 | } | |
1363 | ||
63a01ef8 AL |
1364 | void net_cleanup(void) |
1365 | { | |
1ceef9f2 | 1366 | NetClientState *nc; |
577c4af9 | 1367 | |
1ceef9f2 JW |
1368 | /* We may del multiple entries during qemu_del_net_client(), |
1369 | * so QTAILQ_FOREACH_SAFE() is also not safe here. | |
1370 | */ | |
1371 | while (!QTAILQ_EMPTY(&net_clients)) { | |
1372 | nc = QTAILQ_FIRST(&net_clients); | |
f394b2e2 | 1373 | if (nc->info->type == NET_CLIENT_DRIVER_NIC) { |
948ecf21 JW |
1374 | qemu_del_nic(qemu_get_nic(nc)); |
1375 | } else { | |
1376 | qemu_del_net_client(nc); | |
1377 | } | |
577c4af9 | 1378 | } |
ca77d85e MT |
1379 | |
1380 | qemu_del_vm_change_state_handler(net_change_state_entry); | |
63a01ef8 AL |
1381 | } |
1382 | ||
668680f7 | 1383 | void net_check_clients(void) |
63a01ef8 | 1384 | { |
35277d14 | 1385 | NetClientState *nc; |
48e2faf2 | 1386 | int i; |
63a01ef8 | 1387 | |
81017645 | 1388 | net_hub_check_clients(); |
ac60cc18 | 1389 | |
35277d14 SH |
1390 | QTAILQ_FOREACH(nc, &net_clients, next) { |
1391 | if (!nc->peer) { | |
8297be80 | 1392 | warn_report("%s %s has no peer", |
b62e39b4 AF |
1393 | nc->info->type == NET_CLIENT_DRIVER_NIC |
1394 | ? "nic" : "netdev", | |
1395 | nc->name); | |
efe32fdd MA |
1396 | } |
1397 | } | |
48e2faf2 PM |
1398 | |
1399 | /* Check that all NICs requested via -net nic actually got created. | |
1400 | * NICs created via -device don't need to be checked here because | |
1401 | * they are always instantiated. | |
1402 | */ | |
1403 | for (i = 0; i < MAX_NICS; i++) { | |
1404 | NICInfo *nd = &nd_table[i]; | |
1405 | if (nd->used && !nd->instantiated) { | |
8297be80 AF |
1406 | warn_report("requested NIC (%s, model %s) " |
1407 | "was not created (not supported by this machine?)", | |
1408 | nd->name ? nd->name : "anonymous", | |
1409 | nd->model ? nd->model : "unspecified"); | |
48e2faf2 PM |
1410 | } |
1411 | } | |
63a01ef8 | 1412 | } |
dc1c9fe8 | 1413 | |
28d0de7a | 1414 | static int net_init_client(void *dummy, QemuOpts *opts, Error **errp) |
dc1c9fe8 | 1415 | { |
34f708b0 | 1416 | return net_client_init(opts, false, errp); |
f6b134ac MM |
1417 | } |
1418 | ||
28d0de7a | 1419 | static int net_init_netdev(void *dummy, QemuOpts *opts, Error **errp) |
f6b134ac | 1420 | { |
34f708b0 | 1421 | return net_client_init(opts, true, errp); |
dc1c9fe8 | 1422 | } |
4559a1db | 1423 | |
78cd6f7b TH |
1424 | /* For the convenience "--nic" parameter */ |
1425 | static int net_param_nic(void *dummy, QemuOpts *opts, Error **errp) | |
1426 | { | |
1427 | char *mac, *nd_id; | |
1428 | int idx, ret; | |
1429 | NICInfo *ni; | |
1430 | const char *type; | |
1431 | ||
1432 | type = qemu_opt_get(opts, "type"); | |
1433 | if (type && g_str_equal(type, "none")) { | |
1434 | return 0; /* Nothing to do, default_net is cleared in vl.c */ | |
1435 | } | |
1436 | ||
1437 | idx = nic_get_free_idx(); | |
1438 | if (idx == -1 || nb_nics >= MAX_NICS) { | |
1439 | error_setg(errp, "no more on-board/default NIC slots available"); | |
4559a1db LC |
1440 | return -1; |
1441 | } | |
1442 | ||
78cd6f7b TH |
1443 | if (!type) { |
1444 | qemu_opt_set(opts, "type", "user", &error_abort); | |
1445 | } | |
1446 | ||
1447 | ni = &nd_table[idx]; | |
1448 | memset(ni, 0, sizeof(*ni)); | |
1449 | ni->model = qemu_opt_get_del(opts, "model"); | |
1450 | ||
1451 | /* Create an ID if the user did not specify one */ | |
1452 | nd_id = g_strdup(qemu_opts_id(opts)); | |
1453 | if (!nd_id) { | |
0561dfac | 1454 | nd_id = g_strdup_printf("__org.qemu.nic%i", idx); |
78cd6f7b TH |
1455 | qemu_opts_set_id(opts, nd_id); |
1456 | } | |
1457 | ||
1458 | /* Handle MAC address */ | |
1459 | mac = qemu_opt_get_del(opts, "mac"); | |
1460 | if (mac) { | |
1461 | ret = net_parse_macaddr(ni->macaddr.a, mac); | |
1462 | g_free(mac); | |
1463 | if (ret) { | |
1464 | error_setg(errp, "invalid syntax for ethernet address"); | |
9d946191 | 1465 | goto out; |
78cd6f7b TH |
1466 | } |
1467 | if (is_multicast_ether_addr(ni->macaddr.a)) { | |
1468 | error_setg(errp, "NIC cannot have multicast MAC address"); | |
9d946191 TH |
1469 | ret = -1; |
1470 | goto out; | |
78cd6f7b TH |
1471 | } |
1472 | } | |
1473 | qemu_macaddr_default_if_unset(&ni->macaddr); | |
1474 | ||
1475 | ret = net_client_init(opts, true, errp); | |
1476 | if (ret == 0) { | |
1477 | ni->netdev = qemu_find_netdev(nd_id); | |
1478 | ni->used = true; | |
1479 | nb_nics++; | |
1480 | } | |
1481 | ||
9d946191 | 1482 | out: |
78cd6f7b | 1483 | g_free(nd_id); |
4559a1db | 1484 | return ret; |
dc1c9fe8 MM |
1485 | } |
1486 | ||
34f708b0 | 1487 | int net_init_clients(Error **errp) |
dc1c9fe8 | 1488 | { |
ca77d85e MT |
1489 | net_change_state_entry = |
1490 | qemu_add_vm_change_state_handler(net_vm_change_state_handler, NULL); | |
1491 | ||
94878994 | 1492 | QTAILQ_INIT(&net_clients); |
5610c3aa | 1493 | |
28d0de7a | 1494 | if (qemu_opts_foreach(qemu_find_opts("netdev"), |
34f708b0 | 1495 | net_init_netdev, NULL, errp)) { |
f6b134ac | 1496 | return -1; |
a4c7367f | 1497 | } |
f6b134ac | 1498 | |
78cd6f7b TH |
1499 | if (qemu_opts_foreach(qemu_find_opts("nic"), net_param_nic, NULL, errp)) { |
1500 | return -1; | |
1501 | } | |
1502 | ||
34f708b0 | 1503 | if (qemu_opts_foreach(qemu_find_opts("net"), net_init_client, NULL, errp)) { |
dc1c9fe8 MM |
1504 | return -1; |
1505 | } | |
1506 | ||
dc1c9fe8 MM |
1507 | return 0; |
1508 | } | |
1509 | ||
7f161aae | 1510 | int net_client_parse(QemuOptsList *opts_list, const char *optarg) |
dc1c9fe8 | 1511 | { |
70b94331 | 1512 | if (!qemu_opts_parse_noisily(opts_list, optarg, true)) { |
dc1c9fe8 MM |
1513 | return -1; |
1514 | } | |
1515 | ||
1516 | return 0; | |
1517 | } | |
7fc8d918 JW |
1518 | |
1519 | /* From FreeBSD */ | |
1520 | /* XXX: optimize */ | |
eaba8f34 | 1521 | uint32_t net_crc32(const uint8_t *p, int len) |
7fc8d918 JW |
1522 | { |
1523 | uint32_t crc; | |
1524 | int carry, i, j; | |
1525 | uint8_t b; | |
1526 | ||
1527 | crc = 0xffffffff; | |
eaba8f34 MCA |
1528 | for (i = 0; i < len; i++) { |
1529 | b = *p++; | |
7fc8d918 JW |
1530 | for (j = 0; j < 8; j++) { |
1531 | carry = ((crc & 0x80000000L) ? 1 : 0) ^ (b & 0x01); | |
1532 | crc <<= 1; | |
1533 | b >>= 1; | |
1534 | if (carry) { | |
eaba8f34 | 1535 | crc = ((crc ^ POLYNOMIAL_BE) | carry); |
7fc8d918 JW |
1536 | } |
1537 | } | |
1538 | } | |
eaba8f34 MCA |
1539 | |
1540 | return crc; | |
1541 | } | |
1542 | ||
f1a7deb9 MCA |
1543 | uint32_t net_crc32_le(const uint8_t *p, int len) |
1544 | { | |
1545 | uint32_t crc; | |
1546 | int carry, i, j; | |
1547 | uint8_t b; | |
1548 | ||
1549 | crc = 0xffffffff; | |
1550 | for (i = 0; i < len; i++) { | |
1551 | b = *p++; | |
1552 | for (j = 0; j < 8; j++) { | |
1553 | carry = (crc & 0x1) ^ (b & 0x01); | |
1554 | crc >>= 1; | |
1555 | b >>= 1; | |
1556 | if (carry) { | |
1557 | crc ^= POLYNOMIAL_LE; | |
1558 | } | |
1559 | } | |
1560 | } | |
1561 | ||
1562 | return crc; | |
1563 | } | |
1564 | ||
4d454574 PB |
1565 | QemuOptsList qemu_netdev_opts = { |
1566 | .name = "netdev", | |
1567 | .implied_opt_name = "type", | |
1568 | .head = QTAILQ_HEAD_INITIALIZER(qemu_netdev_opts.head), | |
78cd6f7b TH |
1569 | .desc = { |
1570 | /* | |
1571 | * no elements => accept any params | |
1572 | * validation will happen later | |
1573 | */ | |
1574 | { /* end of list */ } | |
1575 | }, | |
1576 | }; | |
1577 | ||
1578 | QemuOptsList qemu_nic_opts = { | |
1579 | .name = "nic", | |
1580 | .implied_opt_name = "type", | |
1581 | .head = QTAILQ_HEAD_INITIALIZER(qemu_nic_opts.head), | |
4d454574 PB |
1582 | .desc = { |
1583 | /* | |
1584 | * no elements => accept any params | |
1585 | * validation will happen later | |
1586 | */ | |
1587 | { /* end of list */ } | |
1588 | }, | |
1589 | }; | |
1590 | ||
1591 | QemuOptsList qemu_net_opts = { | |
1592 | .name = "net", | |
1593 | .implied_opt_name = "type", | |
1594 | .head = QTAILQ_HEAD_INITIALIZER(qemu_net_opts.head), | |
1595 | .desc = { | |
1596 | /* | |
1597 | * no elements => accept any params | |
1598 | * validation will happen later | |
1599 | */ | |
1600 | { /* end of list */ } | |
1601 | }, | |
1602 | }; | |
16a3df40 ZC |
1603 | |
1604 | void net_socket_rs_init(SocketReadState *rs, | |
3cde5ea2 ZC |
1605 | SocketReadStateFinalize *finalize, |
1606 | bool vnet_hdr) | |
16a3df40 ZC |
1607 | { |
1608 | rs->state = 0; | |
3cde5ea2 | 1609 | rs->vnet_hdr = vnet_hdr; |
16a3df40 ZC |
1610 | rs->index = 0; |
1611 | rs->packet_len = 0; | |
3cde5ea2 | 1612 | rs->vnet_hdr_len = 0; |
16a3df40 ZC |
1613 | memset(rs->buf, 0, sizeof(rs->buf)); |
1614 | rs->finalize = finalize; | |
1615 | } | |
1616 | ||
1617 | /* | |
1618 | * Returns | |
e9e0a585 ZC |
1619 | * 0: success |
1620 | * -1: error occurs | |
16a3df40 ZC |
1621 | */ |
1622 | int net_fill_rstate(SocketReadState *rs, const uint8_t *buf, int size) | |
1623 | { | |
1624 | unsigned int l; | |
1625 | ||
1626 | while (size > 0) { | |
3cde5ea2 ZC |
1627 | /* Reassemble a packet from the network. |
1628 | * 0 = getting length. | |
1629 | * 1 = getting vnet header length. | |
1630 | * 2 = getting data. | |
1631 | */ | |
1632 | switch (rs->state) { | |
16a3df40 ZC |
1633 | case 0: |
1634 | l = 4 - rs->index; | |
1635 | if (l > size) { | |
1636 | l = size; | |
1637 | } | |
1638 | memcpy(rs->buf + rs->index, buf, l); | |
1639 | buf += l; | |
1640 | size -= l; | |
1641 | rs->index += l; | |
1642 | if (rs->index == 4) { | |
1643 | /* got length */ | |
1644 | rs->packet_len = ntohl(*(uint32_t *)rs->buf); | |
1645 | rs->index = 0; | |
3cde5ea2 ZC |
1646 | if (rs->vnet_hdr) { |
1647 | rs->state = 1; | |
1648 | } else { | |
1649 | rs->state = 2; | |
1650 | rs->vnet_hdr_len = 0; | |
1651 | } | |
16a3df40 ZC |
1652 | } |
1653 | break; | |
1654 | case 1: | |
3cde5ea2 ZC |
1655 | l = 4 - rs->index; |
1656 | if (l > size) { | |
1657 | l = size; | |
1658 | } | |
1659 | memcpy(rs->buf + rs->index, buf, l); | |
1660 | buf += l; | |
1661 | size -= l; | |
1662 | rs->index += l; | |
1663 | if (rs->index == 4) { | |
1664 | /* got vnet header length */ | |
1665 | rs->vnet_hdr_len = ntohl(*(uint32_t *)rs->buf); | |
1666 | rs->index = 0; | |
1667 | rs->state = 2; | |
1668 | } | |
1669 | break; | |
1670 | case 2: | |
16a3df40 ZC |
1671 | l = rs->packet_len - rs->index; |
1672 | if (l > size) { | |
1673 | l = size; | |
1674 | } | |
1675 | if (rs->index + l <= sizeof(rs->buf)) { | |
1676 | memcpy(rs->buf + rs->index, buf, l); | |
1677 | } else { | |
1678 | fprintf(stderr, "serious error: oversized packet received," | |
1679 | "connection terminated.\n"); | |
1680 | rs->index = rs->state = 0; | |
1681 | return -1; | |
1682 | } | |
1683 | ||
1684 | rs->index += l; | |
1685 | buf += l; | |
1686 | size -= l; | |
1687 | if (rs->index >= rs->packet_len) { | |
1688 | rs->index = 0; | |
1689 | rs->state = 0; | |
e79cd406 DB |
1690 | assert(rs->finalize); |
1691 | rs->finalize(rs); | |
16a3df40 ZC |
1692 | } |
1693 | break; | |
1694 | } | |
1695 | } | |
e9e0a585 ZC |
1696 | |
1697 | assert(size == 0); | |
16a3df40 ZC |
1698 | return 0; |
1699 | } |