root / net.c @ a08784dd
History | View | Annotate | Download (38.5 kB)
| 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 |
*/
|
| 24 |
#include "net.h" |
| 25 |
|
| 26 |
#include "config-host.h" |
| 27 |
|
| 28 |
#include "net/tap.h" |
| 29 |
#include "net/socket.h" |
| 30 |
#include "net/dump.h" |
| 31 |
#include "net/slirp.h" |
| 32 |
#include "net/vde.h" |
| 33 |
#include "net/util.h" |
| 34 |
#include "monitor.h" |
| 35 |
#include "qemu-common.h" |
| 36 |
#include "qemu_socket.h" |
| 37 |
#include "hw/qdev.h" |
| 38 |
#include "iov.h" |
| 39 |
|
| 40 |
static QTAILQ_HEAD(, VLANState) vlans;
|
| 41 |
static QTAILQ_HEAD(, VLANClientState) non_vlan_clients;
|
| 42 |
|
| 43 |
int default_net = 1; |
| 44 |
|
| 45 |
/***********************************************************/
|
| 46 |
/* network device redirectors */
|
| 47 |
|
| 48 |
#if defined(DEBUG_NET)
|
| 49 |
static void hex_dump(FILE *f, const uint8_t *buf, int size) |
| 50 |
{
|
| 51 |
int len, i, j, c;
|
| 52 |
|
| 53 |
for(i=0;i<size;i+=16) { |
| 54 |
len = size - i; |
| 55 |
if (len > 16) |
| 56 |
len = 16;
|
| 57 |
fprintf(f, "%08x ", i);
|
| 58 |
for(j=0;j<16;j++) { |
| 59 |
if (j < len)
|
| 60 |
fprintf(f, " %02x", buf[i+j]);
|
| 61 |
else
|
| 62 |
fprintf(f, " ");
|
| 63 |
} |
| 64 |
fprintf(f, " ");
|
| 65 |
for(j=0;j<len;j++) { |
| 66 |
c = buf[i+j]; |
| 67 |
if (c < ' ' || c > '~') |
| 68 |
c = '.';
|
| 69 |
fprintf(f, "%c", c);
|
| 70 |
} |
| 71 |
fprintf(f, "\n");
|
| 72 |
} |
| 73 |
} |
| 74 |
#endif
|
| 75 |
|
| 76 |
static int get_str_sep(char *buf, int buf_size, const char **pp, int sep) |
| 77 |
{
|
| 78 |
const char *p, *p1; |
| 79 |
int len;
|
| 80 |
p = *pp; |
| 81 |
p1 = strchr(p, sep); |
| 82 |
if (!p1)
|
| 83 |
return -1; |
| 84 |
len = p1 - p; |
| 85 |
p1++; |
| 86 |
if (buf_size > 0) { |
| 87 |
if (len > buf_size - 1) |
| 88 |
len = buf_size - 1;
|
| 89 |
memcpy(buf, p, len); |
| 90 |
buf[len] = '\0';
|
| 91 |
} |
| 92 |
*pp = p1; |
| 93 |
return 0; |
| 94 |
} |
| 95 |
|
| 96 |
int parse_host_port(struct sockaddr_in *saddr, const char *str) |
| 97 |
{
|
| 98 |
char buf[512]; |
| 99 |
struct hostent *he;
|
| 100 |
const char *p, *r; |
| 101 |
int port;
|
| 102 |
|
| 103 |
p = str; |
| 104 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) |
| 105 |
return -1; |
| 106 |
saddr->sin_family = AF_INET; |
| 107 |
if (buf[0] == '\0') { |
| 108 |
saddr->sin_addr.s_addr = 0;
|
| 109 |
} else {
|
| 110 |
if (qemu_isdigit(buf[0])) { |
| 111 |
if (!inet_aton(buf, &saddr->sin_addr))
|
| 112 |
return -1; |
| 113 |
} else {
|
| 114 |
if ((he = gethostbyname(buf)) == NULL) |
| 115 |
return - 1; |
| 116 |
saddr->sin_addr = *(struct in_addr *)he->h_addr;
|
| 117 |
} |
| 118 |
} |
| 119 |
port = strtol(p, (char **)&r, 0); |
| 120 |
if (r == p)
|
| 121 |
return -1; |
| 122 |
saddr->sin_port = htons(port); |
| 123 |
return 0; |
| 124 |
} |
| 125 |
|
| 126 |
void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6]) |
| 127 |
{
|
| 128 |
snprintf(vc->info_str, sizeof(vc->info_str),
|
| 129 |
"model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
|
| 130 |
vc->model, |
| 131 |
macaddr[0], macaddr[1], macaddr[2], |
| 132 |
macaddr[3], macaddr[4], macaddr[5]); |
| 133 |
} |
| 134 |
|
| 135 |
void qemu_macaddr_default_if_unset(MACAddr *macaddr)
|
| 136 |
{
|
| 137 |
static int index = 0; |
| 138 |
static const MACAddr zero = { .a = { 0,0,0,0,0,0 } }; |
| 139 |
|
| 140 |
if (memcmp(macaddr, &zero, sizeof(zero)) != 0) |
| 141 |
return;
|
| 142 |
macaddr->a[0] = 0x52; |
| 143 |
macaddr->a[1] = 0x54; |
| 144 |
macaddr->a[2] = 0x00; |
| 145 |
macaddr->a[3] = 0x12; |
| 146 |
macaddr->a[4] = 0x34; |
| 147 |
macaddr->a[5] = 0x56 + index++; |
| 148 |
} |
| 149 |
|
| 150 |
static char *assign_name(VLANClientState *vc1, const char *model) |
| 151 |
{
|
| 152 |
VLANState *vlan; |
| 153 |
char buf[256]; |
| 154 |
int id = 0; |
| 155 |
|
| 156 |
QTAILQ_FOREACH(vlan, &vlans, next) {
|
| 157 |
VLANClientState *vc; |
| 158 |
|
| 159 |
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
| 160 |
if (vc != vc1 && strcmp(vc->model, model) == 0) { |
| 161 |
id++; |
| 162 |
} |
| 163 |
} |
| 164 |
} |
| 165 |
|
| 166 |
snprintf(buf, sizeof(buf), "%s.%d", model, id); |
| 167 |
|
| 168 |
return qemu_strdup(buf);
|
| 169 |
} |
| 170 |
|
| 171 |
static ssize_t qemu_deliver_packet(VLANClientState *sender,
|
| 172 |
unsigned flags,
|
| 173 |
const uint8_t *data,
|
| 174 |
size_t size, |
| 175 |
void *opaque);
|
| 176 |
static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
|
| 177 |
unsigned flags,
|
| 178 |
const struct iovec *iov, |
| 179 |
int iovcnt,
|
| 180 |
void *opaque);
|
| 181 |
|
| 182 |
VLANClientState *qemu_new_net_client(NetClientInfo *info, |
| 183 |
VLANState *vlan, |
| 184 |
VLANClientState *peer, |
| 185 |
const char *model, |
| 186 |
const char *name) |
| 187 |
{
|
| 188 |
VLANClientState *vc; |
| 189 |
|
| 190 |
assert(info->size >= sizeof(VLANClientState));
|
| 191 |
|
| 192 |
vc = qemu_mallocz(info->size); |
| 193 |
|
| 194 |
vc->info = info; |
| 195 |
vc->model = qemu_strdup(model); |
| 196 |
if (name) {
|
| 197 |
vc->name = qemu_strdup(name); |
| 198 |
} else {
|
| 199 |
vc->name = assign_name(vc, model); |
| 200 |
} |
| 201 |
|
| 202 |
if (vlan) {
|
| 203 |
assert(!peer); |
| 204 |
vc->vlan = vlan; |
| 205 |
QTAILQ_INSERT_TAIL(&vc->vlan->clients, vc, next); |
| 206 |
} else {
|
| 207 |
if (peer) {
|
| 208 |
assert(!peer->peer); |
| 209 |
vc->peer = peer; |
| 210 |
peer->peer = vc; |
| 211 |
} |
| 212 |
QTAILQ_INSERT_TAIL(&non_vlan_clients, vc, next); |
| 213 |
|
| 214 |
vc->send_queue = qemu_new_net_queue(qemu_deliver_packet, |
| 215 |
qemu_deliver_packet_iov, |
| 216 |
vc); |
| 217 |
} |
| 218 |
|
| 219 |
return vc;
|
| 220 |
} |
| 221 |
|
| 222 |
NICState *qemu_new_nic(NetClientInfo *info, |
| 223 |
NICConf *conf, |
| 224 |
const char *model, |
| 225 |
const char *name, |
| 226 |
void *opaque)
|
| 227 |
{
|
| 228 |
VLANClientState *nc; |
| 229 |
NICState *nic; |
| 230 |
|
| 231 |
assert(info->type == NET_CLIENT_TYPE_NIC); |
| 232 |
assert(info->size >= sizeof(NICState));
|
| 233 |
|
| 234 |
nc = qemu_new_net_client(info, conf->vlan, conf->peer, model, name); |
| 235 |
|
| 236 |
nic = DO_UPCAST(NICState, nc, nc); |
| 237 |
nic->conf = conf; |
| 238 |
nic->opaque = opaque; |
| 239 |
|
| 240 |
return nic;
|
| 241 |
} |
| 242 |
|
| 243 |
static void qemu_cleanup_vlan_client(VLANClientState *vc) |
| 244 |
{
|
| 245 |
if (vc->vlan) {
|
| 246 |
QTAILQ_REMOVE(&vc->vlan->clients, vc, next); |
| 247 |
} else {
|
| 248 |
QTAILQ_REMOVE(&non_vlan_clients, vc, next); |
| 249 |
} |
| 250 |
|
| 251 |
if (vc->info->cleanup) {
|
| 252 |
vc->info->cleanup(vc); |
| 253 |
} |
| 254 |
} |
| 255 |
|
| 256 |
static void qemu_free_vlan_client(VLANClientState *vc) |
| 257 |
{
|
| 258 |
if (!vc->vlan) {
|
| 259 |
if (vc->send_queue) {
|
| 260 |
qemu_del_net_queue(vc->send_queue); |
| 261 |
} |
| 262 |
if (vc->peer) {
|
| 263 |
vc->peer->peer = NULL;
|
| 264 |
} |
| 265 |
} |
| 266 |
qemu_free(vc->name); |
| 267 |
qemu_free(vc->model); |
| 268 |
qemu_free(vc); |
| 269 |
} |
| 270 |
|
| 271 |
void qemu_del_vlan_client(VLANClientState *vc)
|
| 272 |
{
|
| 273 |
/* If there is a peer NIC, delete and cleanup client, but do not free. */
|
| 274 |
if (!vc->vlan && vc->peer && vc->peer->info->type == NET_CLIENT_TYPE_NIC) {
|
| 275 |
NICState *nic = DO_UPCAST(NICState, nc, vc->peer); |
| 276 |
if (nic->peer_deleted) {
|
| 277 |
return;
|
| 278 |
} |
| 279 |
nic->peer_deleted = true;
|
| 280 |
/* Let NIC know peer is gone. */
|
| 281 |
vc->peer->link_down = true;
|
| 282 |
if (vc->peer->info->link_status_changed) {
|
| 283 |
vc->peer->info->link_status_changed(vc->peer); |
| 284 |
} |
| 285 |
qemu_cleanup_vlan_client(vc); |
| 286 |
return;
|
| 287 |
} |
| 288 |
|
| 289 |
/* If this is a peer NIC and peer has already been deleted, free it now. */
|
| 290 |
if (!vc->vlan && vc->peer && vc->info->type == NET_CLIENT_TYPE_NIC) {
|
| 291 |
NICState *nic = DO_UPCAST(NICState, nc, vc); |
| 292 |
if (nic->peer_deleted) {
|
| 293 |
qemu_free_vlan_client(vc->peer); |
| 294 |
} |
| 295 |
} |
| 296 |
|
| 297 |
qemu_cleanup_vlan_client(vc); |
| 298 |
qemu_free_vlan_client(vc); |
| 299 |
} |
| 300 |
|
| 301 |
VLANClientState * |
| 302 |
qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
|
| 303 |
const char *client_str) |
| 304 |
{
|
| 305 |
VLANState *vlan; |
| 306 |
VLANClientState *vc; |
| 307 |
|
| 308 |
vlan = qemu_find_vlan(vlan_id, 0);
|
| 309 |
if (!vlan) {
|
| 310 |
monitor_printf(mon, "unknown VLAN %d\n", vlan_id);
|
| 311 |
return NULL; |
| 312 |
} |
| 313 |
|
| 314 |
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
| 315 |
if (!strcmp(vc->name, client_str)) {
|
| 316 |
break;
|
| 317 |
} |
| 318 |
} |
| 319 |
if (!vc) {
|
| 320 |
monitor_printf(mon, "can't find device %s on VLAN %d\n",
|
| 321 |
client_str, vlan_id); |
| 322 |
} |
| 323 |
|
| 324 |
return vc;
|
| 325 |
} |
| 326 |
|
| 327 |
void qemu_foreach_nic(qemu_nic_foreach func, void *opaque) |
| 328 |
{
|
| 329 |
VLANClientState *nc; |
| 330 |
VLANState *vlan; |
| 331 |
|
| 332 |
QTAILQ_FOREACH(nc, &non_vlan_clients, next) {
|
| 333 |
if (nc->info->type == NET_CLIENT_TYPE_NIC) {
|
| 334 |
func(DO_UPCAST(NICState, nc, nc), opaque); |
| 335 |
} |
| 336 |
} |
| 337 |
|
| 338 |
QTAILQ_FOREACH(vlan, &vlans, next) {
|
| 339 |
QTAILQ_FOREACH(nc, &vlan->clients, next) {
|
| 340 |
if (nc->info->type == NET_CLIENT_TYPE_NIC) {
|
| 341 |
func(DO_UPCAST(NICState, nc, nc), opaque); |
| 342 |
} |
| 343 |
} |
| 344 |
} |
| 345 |
} |
| 346 |
|
| 347 |
int qemu_can_send_packet(VLANClientState *sender)
|
| 348 |
{
|
| 349 |
VLANState *vlan = sender->vlan; |
| 350 |
VLANClientState *vc; |
| 351 |
|
| 352 |
if (sender->peer) {
|
| 353 |
if (sender->peer->receive_disabled) {
|
| 354 |
return 0; |
| 355 |
} else if (sender->peer->info->can_receive && |
| 356 |
!sender->peer->info->can_receive(sender->peer)) {
|
| 357 |
return 0; |
| 358 |
} else {
|
| 359 |
return 1; |
| 360 |
} |
| 361 |
} |
| 362 |
|
| 363 |
if (!sender->vlan) {
|
| 364 |
return 1; |
| 365 |
} |
| 366 |
|
| 367 |
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
| 368 |
if (vc == sender) {
|
| 369 |
continue;
|
| 370 |
} |
| 371 |
|
| 372 |
/* no can_receive() handler, they can always receive */
|
| 373 |
if (vc->info->can_receive && !vc->info->can_receive(vc)) {
|
| 374 |
return 0; |
| 375 |
} |
| 376 |
} |
| 377 |
return 1; |
| 378 |
} |
| 379 |
|
| 380 |
static ssize_t qemu_deliver_packet(VLANClientState *sender,
|
| 381 |
unsigned flags,
|
| 382 |
const uint8_t *data,
|
| 383 |
size_t size, |
| 384 |
void *opaque)
|
| 385 |
{
|
| 386 |
VLANClientState *vc = opaque; |
| 387 |
ssize_t ret; |
| 388 |
|
| 389 |
if (vc->link_down) {
|
| 390 |
return size;
|
| 391 |
} |
| 392 |
|
| 393 |
if (vc->receive_disabled) {
|
| 394 |
return 0; |
| 395 |
} |
| 396 |
|
| 397 |
if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->info->receive_raw) {
|
| 398 |
ret = vc->info->receive_raw(vc, data, size); |
| 399 |
} else {
|
| 400 |
ret = vc->info->receive(vc, data, size); |
| 401 |
} |
| 402 |
|
| 403 |
if (ret == 0) { |
| 404 |
vc->receive_disabled = 1;
|
| 405 |
}; |
| 406 |
|
| 407 |
return ret;
|
| 408 |
} |
| 409 |
|
| 410 |
static ssize_t qemu_vlan_deliver_packet(VLANClientState *sender,
|
| 411 |
unsigned flags,
|
| 412 |
const uint8_t *buf,
|
| 413 |
size_t size, |
| 414 |
void *opaque)
|
| 415 |
{
|
| 416 |
VLANState *vlan = opaque; |
| 417 |
VLANClientState *vc; |
| 418 |
ssize_t ret = -1;
|
| 419 |
|
| 420 |
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
| 421 |
ssize_t len; |
| 422 |
|
| 423 |
if (vc == sender) {
|
| 424 |
continue;
|
| 425 |
} |
| 426 |
|
| 427 |
if (vc->link_down) {
|
| 428 |
ret = size; |
| 429 |
continue;
|
| 430 |
} |
| 431 |
|
| 432 |
if (vc->receive_disabled) {
|
| 433 |
ret = 0;
|
| 434 |
continue;
|
| 435 |
} |
| 436 |
|
| 437 |
if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->info->receive_raw) {
|
| 438 |
len = vc->info->receive_raw(vc, buf, size); |
| 439 |
} else {
|
| 440 |
len = vc->info->receive(vc, buf, size); |
| 441 |
} |
| 442 |
|
| 443 |
if (len == 0) { |
| 444 |
vc->receive_disabled = 1;
|
| 445 |
} |
| 446 |
|
| 447 |
ret = (ret >= 0) ? ret : len;
|
| 448 |
|
| 449 |
} |
| 450 |
|
| 451 |
return ret;
|
| 452 |
} |
| 453 |
|
| 454 |
void qemu_purge_queued_packets(VLANClientState *vc)
|
| 455 |
{
|
| 456 |
NetQueue *queue; |
| 457 |
|
| 458 |
if (!vc->peer && !vc->vlan) {
|
| 459 |
return;
|
| 460 |
} |
| 461 |
|
| 462 |
if (vc->peer) {
|
| 463 |
queue = vc->peer->send_queue; |
| 464 |
} else {
|
| 465 |
queue = vc->vlan->send_queue; |
| 466 |
} |
| 467 |
|
| 468 |
qemu_net_queue_purge(queue, vc); |
| 469 |
} |
| 470 |
|
| 471 |
void qemu_flush_queued_packets(VLANClientState *vc)
|
| 472 |
{
|
| 473 |
NetQueue *queue; |
| 474 |
|
| 475 |
vc->receive_disabled = 0;
|
| 476 |
|
| 477 |
if (vc->vlan) {
|
| 478 |
queue = vc->vlan->send_queue; |
| 479 |
} else {
|
| 480 |
queue = vc->send_queue; |
| 481 |
} |
| 482 |
|
| 483 |
qemu_net_queue_flush(queue); |
| 484 |
} |
| 485 |
|
| 486 |
static ssize_t qemu_send_packet_async_with_flags(VLANClientState *sender,
|
| 487 |
unsigned flags,
|
| 488 |
const uint8_t *buf, int size, |
| 489 |
NetPacketSent *sent_cb) |
| 490 |
{
|
| 491 |
NetQueue *queue; |
| 492 |
|
| 493 |
#ifdef DEBUG_NET
|
| 494 |
printf("qemu_send_packet_async:\n");
|
| 495 |
hex_dump(stdout, buf, size); |
| 496 |
#endif
|
| 497 |
|
| 498 |
if (sender->link_down || (!sender->peer && !sender->vlan)) {
|
| 499 |
return size;
|
| 500 |
} |
| 501 |
|
| 502 |
if (sender->peer) {
|
| 503 |
queue = sender->peer->send_queue; |
| 504 |
} else {
|
| 505 |
queue = sender->vlan->send_queue; |
| 506 |
} |
| 507 |
|
| 508 |
return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb);
|
| 509 |
} |
| 510 |
|
| 511 |
ssize_t qemu_send_packet_async(VLANClientState *sender, |
| 512 |
const uint8_t *buf, int size, |
| 513 |
NetPacketSent *sent_cb) |
| 514 |
{
|
| 515 |
return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE,
|
| 516 |
buf, size, sent_cb); |
| 517 |
} |
| 518 |
|
| 519 |
void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size) |
| 520 |
{
|
| 521 |
qemu_send_packet_async(vc, buf, size, NULL);
|
| 522 |
} |
| 523 |
|
| 524 |
ssize_t qemu_send_packet_raw(VLANClientState *vc, const uint8_t *buf, int size) |
| 525 |
{
|
| 526 |
return qemu_send_packet_async_with_flags(vc, QEMU_NET_PACKET_FLAG_RAW,
|
| 527 |
buf, size, NULL);
|
| 528 |
} |
| 529 |
|
| 530 |
static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov, |
| 531 |
int iovcnt)
|
| 532 |
{
|
| 533 |
uint8_t buffer[4096];
|
| 534 |
size_t offset; |
| 535 |
|
| 536 |
offset = iov_to_buf(iov, iovcnt, buffer, 0, sizeof(buffer)); |
| 537 |
|
| 538 |
return vc->info->receive(vc, buffer, offset);
|
| 539 |
} |
| 540 |
|
| 541 |
static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
|
| 542 |
unsigned flags,
|
| 543 |
const struct iovec *iov, |
| 544 |
int iovcnt,
|
| 545 |
void *opaque)
|
| 546 |
{
|
| 547 |
VLANClientState *vc = opaque; |
| 548 |
|
| 549 |
if (vc->link_down) {
|
| 550 |
return iov_size(iov, iovcnt);
|
| 551 |
} |
| 552 |
|
| 553 |
if (vc->info->receive_iov) {
|
| 554 |
return vc->info->receive_iov(vc, iov, iovcnt);
|
| 555 |
} else {
|
| 556 |
return vc_sendv_compat(vc, iov, iovcnt);
|
| 557 |
} |
| 558 |
} |
| 559 |
|
| 560 |
static ssize_t qemu_vlan_deliver_packet_iov(VLANClientState *sender,
|
| 561 |
unsigned flags,
|
| 562 |
const struct iovec *iov, |
| 563 |
int iovcnt,
|
| 564 |
void *opaque)
|
| 565 |
{
|
| 566 |
VLANState *vlan = opaque; |
| 567 |
VLANClientState *vc; |
| 568 |
ssize_t ret = -1;
|
| 569 |
|
| 570 |
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
| 571 |
ssize_t len; |
| 572 |
|
| 573 |
if (vc == sender) {
|
| 574 |
continue;
|
| 575 |
} |
| 576 |
|
| 577 |
if (vc->link_down) {
|
| 578 |
ret = iov_size(iov, iovcnt); |
| 579 |
continue;
|
| 580 |
} |
| 581 |
|
| 582 |
assert(!(flags & QEMU_NET_PACKET_FLAG_RAW)); |
| 583 |
|
| 584 |
if (vc->info->receive_iov) {
|
| 585 |
len = vc->info->receive_iov(vc, iov, iovcnt); |
| 586 |
} else {
|
| 587 |
len = vc_sendv_compat(vc, iov, iovcnt); |
| 588 |
} |
| 589 |
|
| 590 |
ret = (ret >= 0) ? ret : len;
|
| 591 |
} |
| 592 |
|
| 593 |
return ret;
|
| 594 |
} |
| 595 |
|
| 596 |
ssize_t qemu_sendv_packet_async(VLANClientState *sender, |
| 597 |
const struct iovec *iov, int iovcnt, |
| 598 |
NetPacketSent *sent_cb) |
| 599 |
{
|
| 600 |
NetQueue *queue; |
| 601 |
|
| 602 |
if (sender->link_down || (!sender->peer && !sender->vlan)) {
|
| 603 |
return iov_size(iov, iovcnt);
|
| 604 |
} |
| 605 |
|
| 606 |
if (sender->peer) {
|
| 607 |
queue = sender->peer->send_queue; |
| 608 |
} else {
|
| 609 |
queue = sender->vlan->send_queue; |
| 610 |
} |
| 611 |
|
| 612 |
return qemu_net_queue_send_iov(queue, sender,
|
| 613 |
QEMU_NET_PACKET_FLAG_NONE, |
| 614 |
iov, iovcnt, sent_cb); |
| 615 |
} |
| 616 |
|
| 617 |
ssize_t |
| 618 |
qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt) |
| 619 |
{
|
| 620 |
return qemu_sendv_packet_async(vc, iov, iovcnt, NULL); |
| 621 |
} |
| 622 |
|
| 623 |
/* find or alloc a new VLAN */
|
| 624 |
VLANState *qemu_find_vlan(int id, int allocate) |
| 625 |
{
|
| 626 |
VLANState *vlan; |
| 627 |
|
| 628 |
QTAILQ_FOREACH(vlan, &vlans, next) {
|
| 629 |
if (vlan->id == id) {
|
| 630 |
return vlan;
|
| 631 |
} |
| 632 |
} |
| 633 |
|
| 634 |
if (!allocate) {
|
| 635 |
return NULL; |
| 636 |
} |
| 637 |
|
| 638 |
vlan = qemu_mallocz(sizeof(VLANState));
|
| 639 |
vlan->id = id; |
| 640 |
QTAILQ_INIT(&vlan->clients); |
| 641 |
|
| 642 |
vlan->send_queue = qemu_new_net_queue(qemu_vlan_deliver_packet, |
| 643 |
qemu_vlan_deliver_packet_iov, |
| 644 |
vlan); |
| 645 |
|
| 646 |
QTAILQ_INSERT_TAIL(&vlans, vlan, next); |
| 647 |
|
| 648 |
return vlan;
|
| 649 |
} |
| 650 |
|
| 651 |
VLANClientState *qemu_find_netdev(const char *id) |
| 652 |
{
|
| 653 |
VLANClientState *vc; |
| 654 |
|
| 655 |
QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
|
| 656 |
if (!strcmp(vc->name, id)) {
|
| 657 |
return vc;
|
| 658 |
} |
| 659 |
} |
| 660 |
|
| 661 |
return NULL; |
| 662 |
} |
| 663 |
|
| 664 |
static int nic_get_free_idx(void) |
| 665 |
{
|
| 666 |
int index;
|
| 667 |
|
| 668 |
for (index = 0; index < MAX_NICS; index++) |
| 669 |
if (!nd_table[index].used)
|
| 670 |
return index;
|
| 671 |
return -1; |
| 672 |
} |
| 673 |
|
| 674 |
int qemu_show_nic_models(const char *arg, const char *const *models) |
| 675 |
{
|
| 676 |
int i;
|
| 677 |
|
| 678 |
if (!arg || strcmp(arg, "?")) |
| 679 |
return 0; |
| 680 |
|
| 681 |
fprintf(stderr, "qemu: Supported NIC models: ");
|
| 682 |
for (i = 0 ; models[i]; i++) |
| 683 |
fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n'); |
| 684 |
return 1; |
| 685 |
} |
| 686 |
|
| 687 |
void qemu_check_nic_model(NICInfo *nd, const char *model) |
| 688 |
{
|
| 689 |
const char *models[2]; |
| 690 |
|
| 691 |
models[0] = model;
|
| 692 |
models[1] = NULL; |
| 693 |
|
| 694 |
if (qemu_show_nic_models(nd->model, models))
|
| 695 |
exit(0);
|
| 696 |
if (qemu_find_nic_model(nd, models, model) < 0) |
| 697 |
exit(1);
|
| 698 |
} |
| 699 |
|
| 700 |
int qemu_find_nic_model(NICInfo *nd, const char * const *models, |
| 701 |
const char *default_model) |
| 702 |
{
|
| 703 |
int i;
|
| 704 |
|
| 705 |
if (!nd->model)
|
| 706 |
nd->model = qemu_strdup(default_model); |
| 707 |
|
| 708 |
for (i = 0 ; models[i]; i++) { |
| 709 |
if (strcmp(nd->model, models[i]) == 0) |
| 710 |
return i;
|
| 711 |
} |
| 712 |
|
| 713 |
error_report("qemu: Unsupported NIC model: %s", nd->model);
|
| 714 |
return -1; |
| 715 |
} |
| 716 |
|
| 717 |
int net_handle_fd_param(Monitor *mon, const char *param) |
| 718 |
{
|
| 719 |
int fd;
|
| 720 |
|
| 721 |
if (!qemu_isdigit(param[0]) && mon) { |
| 722 |
|
| 723 |
fd = monitor_get_fd(mon, param); |
| 724 |
if (fd == -1) { |
| 725 |
error_report("No file descriptor named %s found", param);
|
| 726 |
return -1; |
| 727 |
} |
| 728 |
} else {
|
| 729 |
char *endptr = NULL; |
| 730 |
|
| 731 |
fd = strtol(param, &endptr, 10);
|
| 732 |
if (*endptr || (fd == 0 && param == endptr)) { |
| 733 |
return -1; |
| 734 |
} |
| 735 |
} |
| 736 |
|
| 737 |
return fd;
|
| 738 |
} |
| 739 |
|
| 740 |
static int net_init_nic(QemuOpts *opts, |
| 741 |
Monitor *mon, |
| 742 |
const char *name, |
| 743 |
VLANState *vlan) |
| 744 |
{
|
| 745 |
int idx;
|
| 746 |
NICInfo *nd; |
| 747 |
const char *netdev; |
| 748 |
|
| 749 |
idx = nic_get_free_idx(); |
| 750 |
if (idx == -1 || nb_nics >= MAX_NICS) { |
| 751 |
error_report("Too Many NICs");
|
| 752 |
return -1; |
| 753 |
} |
| 754 |
|
| 755 |
nd = &nd_table[idx]; |
| 756 |
|
| 757 |
memset(nd, 0, sizeof(*nd)); |
| 758 |
|
| 759 |
if ((netdev = qemu_opt_get(opts, "netdev"))) { |
| 760 |
nd->netdev = qemu_find_netdev(netdev); |
| 761 |
if (!nd->netdev) {
|
| 762 |
error_report("netdev '%s' not found", netdev);
|
| 763 |
return -1; |
| 764 |
} |
| 765 |
} else {
|
| 766 |
assert(vlan); |
| 767 |
nd->vlan = vlan; |
| 768 |
} |
| 769 |
if (name) {
|
| 770 |
nd->name = qemu_strdup(name); |
| 771 |
} |
| 772 |
if (qemu_opt_get(opts, "model")) { |
| 773 |
nd->model = qemu_strdup(qemu_opt_get(opts, "model"));
|
| 774 |
} |
| 775 |
if (qemu_opt_get(opts, "addr")) { |
| 776 |
nd->devaddr = qemu_strdup(qemu_opt_get(opts, "addr"));
|
| 777 |
} |
| 778 |
|
| 779 |
nd->macaddr[0] = 0x52; |
| 780 |
nd->macaddr[1] = 0x54; |
| 781 |
nd->macaddr[2] = 0x00; |
| 782 |
nd->macaddr[3] = 0x12; |
| 783 |
nd->macaddr[4] = 0x34; |
| 784 |
nd->macaddr[5] = 0x56 + idx; |
| 785 |
|
| 786 |
if (qemu_opt_get(opts, "macaddr") && |
| 787 |
net_parse_macaddr(nd->macaddr, qemu_opt_get(opts, "macaddr")) < 0) { |
| 788 |
error_report("invalid syntax for ethernet address");
|
| 789 |
return -1; |
| 790 |
} |
| 791 |
|
| 792 |
nd->nvectors = qemu_opt_get_number(opts, "vectors",
|
| 793 |
DEV_NVECTORS_UNSPECIFIED); |
| 794 |
if (nd->nvectors != DEV_NVECTORS_UNSPECIFIED &&
|
| 795 |
(nd->nvectors < 0 || nd->nvectors > 0x7ffffff)) { |
| 796 |
error_report("invalid # of vectors: %d", nd->nvectors);
|
| 797 |
return -1; |
| 798 |
} |
| 799 |
|
| 800 |
nd->used = 1;
|
| 801 |
nb_nics++; |
| 802 |
|
| 803 |
return idx;
|
| 804 |
} |
| 805 |
|
| 806 |
#define NET_COMMON_PARAMS_DESC \
|
| 807 |
{ \
|
| 808 |
.name = "type", \
|
| 809 |
.type = QEMU_OPT_STRING, \ |
| 810 |
.help = "net client type (nic, tap etc.)", \
|
| 811 |
}, { \
|
| 812 |
.name = "vlan", \
|
| 813 |
.type = QEMU_OPT_NUMBER, \ |
| 814 |
.help = "vlan number", \
|
| 815 |
}, { \
|
| 816 |
.name = "name", \
|
| 817 |
.type = QEMU_OPT_STRING, \ |
| 818 |
.help = "identifier for monitor commands", \
|
| 819 |
} |
| 820 |
|
| 821 |
typedef int (*net_client_init_func)(QemuOpts *opts, |
| 822 |
Monitor *mon, |
| 823 |
const char *name, |
| 824 |
VLANState *vlan); |
| 825 |
|
| 826 |
/* magic number, but compiler will warn if too small */
|
| 827 |
#define NET_MAX_DESC 20 |
| 828 |
|
| 829 |
static const struct { |
| 830 |
const char *type; |
| 831 |
net_client_init_func init; |
| 832 |
QemuOptDesc desc[NET_MAX_DESC]; |
| 833 |
} net_client_types[] = {
|
| 834 |
{
|
| 835 |
.type = "none",
|
| 836 |
.desc = {
|
| 837 |
NET_COMMON_PARAMS_DESC, |
| 838 |
{ /* end of list */ }
|
| 839 |
}, |
| 840 |
}, {
|
| 841 |
.type = "nic",
|
| 842 |
.init = net_init_nic, |
| 843 |
.desc = {
|
| 844 |
NET_COMMON_PARAMS_DESC, |
| 845 |
{
|
| 846 |
.name = "netdev",
|
| 847 |
.type = QEMU_OPT_STRING, |
| 848 |
.help = "id of -netdev to connect to",
|
| 849 |
}, |
| 850 |
{
|
| 851 |
.name = "macaddr",
|
| 852 |
.type = QEMU_OPT_STRING, |
| 853 |
.help = "MAC address",
|
| 854 |
}, {
|
| 855 |
.name = "model",
|
| 856 |
.type = QEMU_OPT_STRING, |
| 857 |
.help = "device model (e1000, rtl8139, virtio etc.)",
|
| 858 |
}, {
|
| 859 |
.name = "addr",
|
| 860 |
.type = QEMU_OPT_STRING, |
| 861 |
.help = "PCI device address",
|
| 862 |
}, {
|
| 863 |
.name = "vectors",
|
| 864 |
.type = QEMU_OPT_NUMBER, |
| 865 |
.help = "number of MSI-x vectors, 0 to disable MSI-X",
|
| 866 |
}, |
| 867 |
{ /* end of list */ }
|
| 868 |
}, |
| 869 |
#ifdef CONFIG_SLIRP
|
| 870 |
}, {
|
| 871 |
.type = "user",
|
| 872 |
.init = net_init_slirp, |
| 873 |
.desc = {
|
| 874 |
NET_COMMON_PARAMS_DESC, |
| 875 |
{
|
| 876 |
.name = "hostname",
|
| 877 |
.type = QEMU_OPT_STRING, |
| 878 |
.help = "client hostname reported by the builtin DHCP server",
|
| 879 |
}, {
|
| 880 |
.name = "restrict",
|
| 881 |
.type = QEMU_OPT_STRING, |
| 882 |
.help = "isolate the guest from the host (y|yes|n|no)",
|
| 883 |
}, {
|
| 884 |
.name = "ip",
|
| 885 |
.type = QEMU_OPT_STRING, |
| 886 |
.help = "legacy parameter, use net= instead",
|
| 887 |
}, {
|
| 888 |
.name = "net",
|
| 889 |
.type = QEMU_OPT_STRING, |
| 890 |
.help = "IP address and optional netmask",
|
| 891 |
}, {
|
| 892 |
.name = "host",
|
| 893 |
.type = QEMU_OPT_STRING, |
| 894 |
.help = "guest-visible address of the host",
|
| 895 |
}, {
|
| 896 |
.name = "tftp",
|
| 897 |
.type = QEMU_OPT_STRING, |
| 898 |
.help = "root directory of the built-in TFTP server",
|
| 899 |
}, {
|
| 900 |
.name = "bootfile",
|
| 901 |
.type = QEMU_OPT_STRING, |
| 902 |
.help = "BOOTP filename, for use with tftp=",
|
| 903 |
}, {
|
| 904 |
.name = "dhcpstart",
|
| 905 |
.type = QEMU_OPT_STRING, |
| 906 |
.help = "the first of the 16 IPs the built-in DHCP server can assign",
|
| 907 |
}, {
|
| 908 |
.name = "dns",
|
| 909 |
.type = QEMU_OPT_STRING, |
| 910 |
.help = "guest-visible address of the virtual nameserver",
|
| 911 |
}, {
|
| 912 |
.name = "smb",
|
| 913 |
.type = QEMU_OPT_STRING, |
| 914 |
.help = "root directory of the built-in SMB server",
|
| 915 |
}, {
|
| 916 |
.name = "smbserver",
|
| 917 |
.type = QEMU_OPT_STRING, |
| 918 |
.help = "IP address of the built-in SMB server",
|
| 919 |
}, {
|
| 920 |
.name = "hostfwd",
|
| 921 |
.type = QEMU_OPT_STRING, |
| 922 |
.help = "guest port number to forward incoming TCP or UDP connections",
|
| 923 |
}, {
|
| 924 |
.name = "guestfwd",
|
| 925 |
.type = QEMU_OPT_STRING, |
| 926 |
.help = "IP address and port to forward guest TCP connections",
|
| 927 |
}, |
| 928 |
{ /* end of list */ }
|
| 929 |
}, |
| 930 |
#endif
|
| 931 |
}, {
|
| 932 |
.type = "tap",
|
| 933 |
.init = net_init_tap, |
| 934 |
.desc = {
|
| 935 |
NET_COMMON_PARAMS_DESC, |
| 936 |
{
|
| 937 |
.name = "ifname",
|
| 938 |
.type = QEMU_OPT_STRING, |
| 939 |
.help = "interface name",
|
| 940 |
}, |
| 941 |
#ifndef _WIN32
|
| 942 |
{
|
| 943 |
.name = "fd",
|
| 944 |
.type = QEMU_OPT_STRING, |
| 945 |
.help = "file descriptor of an already opened tap",
|
| 946 |
}, {
|
| 947 |
.name = "script",
|
| 948 |
.type = QEMU_OPT_STRING, |
| 949 |
.help = "script to initialize the interface",
|
| 950 |
}, {
|
| 951 |
.name = "downscript",
|
| 952 |
.type = QEMU_OPT_STRING, |
| 953 |
.help = "script to shut down the interface",
|
| 954 |
}, {
|
| 955 |
.name = "sndbuf",
|
| 956 |
.type = QEMU_OPT_SIZE, |
| 957 |
.help = "send buffer limit"
|
| 958 |
}, {
|
| 959 |
.name = "vnet_hdr",
|
| 960 |
.type = QEMU_OPT_BOOL, |
| 961 |
.help = "enable the IFF_VNET_HDR flag on the tap interface"
|
| 962 |
}, {
|
| 963 |
.name = "vhost",
|
| 964 |
.type = QEMU_OPT_BOOL, |
| 965 |
.help = "enable vhost-net network accelerator",
|
| 966 |
}, {
|
| 967 |
.name = "vhostfd",
|
| 968 |
.type = QEMU_OPT_STRING, |
| 969 |
.help = "file descriptor of an already opened vhost net device",
|
| 970 |
}, {
|
| 971 |
.name = "vhostforce",
|
| 972 |
.type = QEMU_OPT_BOOL, |
| 973 |
.help = "force vhost on for non-MSIX virtio guests",
|
| 974 |
}, |
| 975 |
#endif /* _WIN32 */ |
| 976 |
{ /* end of list */ }
|
| 977 |
}, |
| 978 |
}, {
|
| 979 |
.type = "socket",
|
| 980 |
.init = net_init_socket, |
| 981 |
.desc = {
|
| 982 |
NET_COMMON_PARAMS_DESC, |
| 983 |
{
|
| 984 |
.name = "fd",
|
| 985 |
.type = QEMU_OPT_STRING, |
| 986 |
.help = "file descriptor of an already opened socket",
|
| 987 |
}, {
|
| 988 |
.name = "listen",
|
| 989 |
.type = QEMU_OPT_STRING, |
| 990 |
.help = "port number, and optional hostname, to listen on",
|
| 991 |
}, {
|
| 992 |
.name = "connect",
|
| 993 |
.type = QEMU_OPT_STRING, |
| 994 |
.help = "port number, and optional hostname, to connect to",
|
| 995 |
}, {
|
| 996 |
.name = "mcast",
|
| 997 |
.type = QEMU_OPT_STRING, |
| 998 |
.help = "UDP multicast address and port number",
|
| 999 |
}, {
|
| 1000 |
.name = "localaddr",
|
| 1001 |
.type = QEMU_OPT_STRING, |
| 1002 |
.help = "source address for multicast packets",
|
| 1003 |
}, |
| 1004 |
{ /* end of list */ }
|
| 1005 |
}, |
| 1006 |
#ifdef CONFIG_VDE
|
| 1007 |
}, {
|
| 1008 |
.type = "vde",
|
| 1009 |
.init = net_init_vde, |
| 1010 |
.desc = {
|
| 1011 |
NET_COMMON_PARAMS_DESC, |
| 1012 |
{
|
| 1013 |
.name = "sock",
|
| 1014 |
.type = QEMU_OPT_STRING, |
| 1015 |
.help = "socket path",
|
| 1016 |
}, {
|
| 1017 |
.name = "port",
|
| 1018 |
.type = QEMU_OPT_NUMBER, |
| 1019 |
.help = "port number",
|
| 1020 |
}, {
|
| 1021 |
.name = "group",
|
| 1022 |
.type = QEMU_OPT_STRING, |
| 1023 |
.help = "group owner of socket",
|
| 1024 |
}, {
|
| 1025 |
.name = "mode",
|
| 1026 |
.type = QEMU_OPT_NUMBER, |
| 1027 |
.help = "permissions for socket",
|
| 1028 |
}, |
| 1029 |
{ /* end of list */ }
|
| 1030 |
}, |
| 1031 |
#endif
|
| 1032 |
}, {
|
| 1033 |
.type = "dump",
|
| 1034 |
.init = net_init_dump, |
| 1035 |
.desc = {
|
| 1036 |
NET_COMMON_PARAMS_DESC, |
| 1037 |
{
|
| 1038 |
.name = "len",
|
| 1039 |
.type = QEMU_OPT_SIZE, |
| 1040 |
.help = "per-packet size limit (64k default)",
|
| 1041 |
}, {
|
| 1042 |
.name = "file",
|
| 1043 |
.type = QEMU_OPT_STRING, |
| 1044 |
.help = "dump file path (default is qemu-vlan0.pcap)",
|
| 1045 |
}, |
| 1046 |
{ /* end of list */ }
|
| 1047 |
}, |
| 1048 |
}, |
| 1049 |
{ /* end of list */ }
|
| 1050 |
}; |
| 1051 |
|
| 1052 |
int net_client_init(Monitor *mon, QemuOpts *opts, int is_netdev) |
| 1053 |
{
|
| 1054 |
const char *name; |
| 1055 |
const char *type; |
| 1056 |
int i;
|
| 1057 |
|
| 1058 |
type = qemu_opt_get(opts, "type");
|
| 1059 |
if (!type) {
|
| 1060 |
qerror_report(QERR_MISSING_PARAMETER, "type");
|
| 1061 |
return -1; |
| 1062 |
} |
| 1063 |
|
| 1064 |
if (is_netdev) {
|
| 1065 |
if (strcmp(type, "tap") != 0 && |
| 1066 |
#ifdef CONFIG_SLIRP
|
| 1067 |
strcmp(type, "user") != 0 && |
| 1068 |
#endif
|
| 1069 |
#ifdef CONFIG_VDE
|
| 1070 |
strcmp(type, "vde") != 0 && |
| 1071 |
#endif
|
| 1072 |
strcmp(type, "socket") != 0) { |
| 1073 |
qerror_report(QERR_INVALID_PARAMETER_VALUE, "type",
|
| 1074 |
"a netdev backend type");
|
| 1075 |
return -1; |
| 1076 |
} |
| 1077 |
|
| 1078 |
if (qemu_opt_get(opts, "vlan")) { |
| 1079 |
qerror_report(QERR_INVALID_PARAMETER, "vlan");
|
| 1080 |
return -1; |
| 1081 |
} |
| 1082 |
if (qemu_opt_get(opts, "name")) { |
| 1083 |
qerror_report(QERR_INVALID_PARAMETER, "name");
|
| 1084 |
return -1; |
| 1085 |
} |
| 1086 |
if (!qemu_opts_id(opts)) {
|
| 1087 |
qerror_report(QERR_MISSING_PARAMETER, "id");
|
| 1088 |
return -1; |
| 1089 |
} |
| 1090 |
} |
| 1091 |
|
| 1092 |
name = qemu_opts_id(opts); |
| 1093 |
if (!name) {
|
| 1094 |
name = qemu_opt_get(opts, "name");
|
| 1095 |
} |
| 1096 |
|
| 1097 |
for (i = 0; net_client_types[i].type != NULL; i++) { |
| 1098 |
if (!strcmp(net_client_types[i].type, type)) {
|
| 1099 |
VLANState *vlan = NULL;
|
| 1100 |
int ret;
|
| 1101 |
|
| 1102 |
if (qemu_opts_validate(opts, &net_client_types[i].desc[0]) == -1) { |
| 1103 |
return -1; |
| 1104 |
} |
| 1105 |
|
| 1106 |
/* Do not add to a vlan if it's a -netdev or a nic with a
|
| 1107 |
* netdev= parameter. */
|
| 1108 |
if (!(is_netdev ||
|
| 1109 |
(strcmp(type, "nic") == 0 && qemu_opt_get(opts, "netdev")))) { |
| 1110 |
vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1); |
| 1111 |
} |
| 1112 |
|
| 1113 |
ret = 0;
|
| 1114 |
if (net_client_types[i].init) {
|
| 1115 |
ret = net_client_types[i].init(opts, mon, name, vlan); |
| 1116 |
if (ret < 0) { |
| 1117 |
/* TODO push error reporting into init() methods */
|
| 1118 |
qerror_report(QERR_DEVICE_INIT_FAILED, type); |
| 1119 |
return -1; |
| 1120 |
} |
| 1121 |
} |
| 1122 |
return ret;
|
| 1123 |
} |
| 1124 |
} |
| 1125 |
|
| 1126 |
qerror_report(QERR_INVALID_PARAMETER_VALUE, "type",
|
| 1127 |
"a network client type");
|
| 1128 |
return -1; |
| 1129 |
} |
| 1130 |
|
| 1131 |
static int net_host_check_device(const char *device) |
| 1132 |
{
|
| 1133 |
int i;
|
| 1134 |
const char *valid_param_list[] = { "tap", "socket", "dump" |
| 1135 |
#ifdef CONFIG_SLIRP
|
| 1136 |
,"user"
|
| 1137 |
#endif
|
| 1138 |
#ifdef CONFIG_VDE
|
| 1139 |
,"vde"
|
| 1140 |
#endif
|
| 1141 |
}; |
| 1142 |
for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) { |
| 1143 |
if (!strncmp(valid_param_list[i], device,
|
| 1144 |
strlen(valid_param_list[i]))) |
| 1145 |
return 1; |
| 1146 |
} |
| 1147 |
|
| 1148 |
return 0; |
| 1149 |
} |
| 1150 |
|
| 1151 |
void net_host_device_add(Monitor *mon, const QDict *qdict) |
| 1152 |
{
|
| 1153 |
const char *device = qdict_get_str(qdict, "device"); |
| 1154 |
const char *opts_str = qdict_get_try_str(qdict, "opts"); |
| 1155 |
QemuOpts *opts; |
| 1156 |
|
| 1157 |
if (!net_host_check_device(device)) {
|
| 1158 |
monitor_printf(mon, "invalid host network device %s\n", device);
|
| 1159 |
return;
|
| 1160 |
} |
| 1161 |
|
| 1162 |
opts = qemu_opts_parse(qemu_find_opts("net"), opts_str ? opts_str : "", 0); |
| 1163 |
if (!opts) {
|
| 1164 |
return;
|
| 1165 |
} |
| 1166 |
|
| 1167 |
qemu_opt_set(opts, "type", device);
|
| 1168 |
|
| 1169 |
if (net_client_init(mon, opts, 0) < 0) { |
| 1170 |
monitor_printf(mon, "adding host network device %s failed\n", device);
|
| 1171 |
} |
| 1172 |
} |
| 1173 |
|
| 1174 |
void net_host_device_remove(Monitor *mon, const QDict *qdict) |
| 1175 |
{
|
| 1176 |
VLANClientState *vc; |
| 1177 |
int vlan_id = qdict_get_int(qdict, "vlan_id"); |
| 1178 |
const char *device = qdict_get_str(qdict, "device"); |
| 1179 |
|
| 1180 |
vc = qemu_find_vlan_client_by_name(mon, vlan_id, device); |
| 1181 |
if (!vc) {
|
| 1182 |
return;
|
| 1183 |
} |
| 1184 |
if (!net_host_check_device(vc->model)) {
|
| 1185 |
monitor_printf(mon, "invalid host network device %s\n", device);
|
| 1186 |
return;
|
| 1187 |
} |
| 1188 |
qemu_del_vlan_client(vc); |
| 1189 |
} |
| 1190 |
|
| 1191 |
int do_netdev_add(Monitor *mon, const QDict *qdict, QObject **ret_data) |
| 1192 |
{
|
| 1193 |
QemuOpts *opts; |
| 1194 |
int res;
|
| 1195 |
|
| 1196 |
opts = qemu_opts_from_qdict(qemu_find_opts("netdev"), qdict);
|
| 1197 |
if (!opts) {
|
| 1198 |
return -1; |
| 1199 |
} |
| 1200 |
|
| 1201 |
res = net_client_init(mon, opts, 1);
|
| 1202 |
if (res < 0) { |
| 1203 |
qemu_opts_del(opts); |
| 1204 |
} |
| 1205 |
|
| 1206 |
return res;
|
| 1207 |
} |
| 1208 |
|
| 1209 |
int do_netdev_del(Monitor *mon, const QDict *qdict, QObject **ret_data) |
| 1210 |
{
|
| 1211 |
const char *id = qdict_get_str(qdict, "id"); |
| 1212 |
VLANClientState *vc; |
| 1213 |
|
| 1214 |
vc = qemu_find_netdev(id); |
| 1215 |
if (!vc || vc->info->type == NET_CLIENT_TYPE_NIC) {
|
| 1216 |
qerror_report(QERR_DEVICE_NOT_FOUND, id); |
| 1217 |
return -1; |
| 1218 |
} |
| 1219 |
qemu_del_vlan_client(vc); |
| 1220 |
qemu_opts_del(qemu_opts_find(qemu_find_opts("netdev"), id));
|
| 1221 |
return 0; |
| 1222 |
} |
| 1223 |
|
| 1224 |
void do_info_network(Monitor *mon)
|
| 1225 |
{
|
| 1226 |
VLANState *vlan; |
| 1227 |
VLANClientState *vc; |
| 1228 |
|
| 1229 |
QTAILQ_FOREACH(vlan, &vlans, next) {
|
| 1230 |
monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
|
| 1231 |
|
| 1232 |
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
| 1233 |
monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
|
| 1234 |
} |
| 1235 |
} |
| 1236 |
monitor_printf(mon, "Devices not on any VLAN:\n");
|
| 1237 |
QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
|
| 1238 |
monitor_printf(mon, " %s: %s", vc->name, vc->info_str);
|
| 1239 |
if (vc->peer) {
|
| 1240 |
monitor_printf(mon, " peer=%s", vc->peer->name);
|
| 1241 |
} |
| 1242 |
monitor_printf(mon, "\n");
|
| 1243 |
} |
| 1244 |
} |
| 1245 |
|
| 1246 |
int do_set_link(Monitor *mon, const QDict *qdict, QObject **ret_data) |
| 1247 |
{
|
| 1248 |
VLANState *vlan; |
| 1249 |
VLANClientState *vc = NULL;
|
| 1250 |
const char *name = qdict_get_str(qdict, "name"); |
| 1251 |
int up = qdict_get_bool(qdict, "up"); |
| 1252 |
|
| 1253 |
QTAILQ_FOREACH(vlan, &vlans, next) {
|
| 1254 |
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
| 1255 |
if (strcmp(vc->name, name) == 0) { |
| 1256 |
goto done;
|
| 1257 |
} |
| 1258 |
} |
| 1259 |
} |
| 1260 |
vc = qemu_find_netdev(name); |
| 1261 |
done:
|
| 1262 |
|
| 1263 |
if (!vc) {
|
| 1264 |
qerror_report(QERR_DEVICE_NOT_FOUND, name); |
| 1265 |
return -1; |
| 1266 |
} |
| 1267 |
|
| 1268 |
vc->link_down = !up; |
| 1269 |
|
| 1270 |
if (vc->info->link_status_changed) {
|
| 1271 |
vc->info->link_status_changed(vc); |
| 1272 |
} |
| 1273 |
|
| 1274 |
/* Notify peer. Don't update peer link status: this makes it possible to
|
| 1275 |
* disconnect from host network without notifying the guest.
|
| 1276 |
* FIXME: is disconnected link status change operation useful?
|
| 1277 |
*
|
| 1278 |
* Current behaviour is compatible with qemu vlans where there could be
|
| 1279 |
* multiple clients that can still communicate with each other in
|
| 1280 |
* disconnected mode. For now maintain this compatibility. */
|
| 1281 |
if (vc->peer && vc->peer->info->link_status_changed) {
|
| 1282 |
vc->peer->info->link_status_changed(vc->peer); |
| 1283 |
} |
| 1284 |
return 0; |
| 1285 |
} |
| 1286 |
|
| 1287 |
void net_cleanup(void) |
| 1288 |
{
|
| 1289 |
VLANState *vlan; |
| 1290 |
VLANClientState *vc, *next_vc; |
| 1291 |
|
| 1292 |
QTAILQ_FOREACH(vlan, &vlans, next) {
|
| 1293 |
QTAILQ_FOREACH_SAFE(vc, &vlan->clients, next, next_vc) {
|
| 1294 |
qemu_del_vlan_client(vc); |
| 1295 |
} |
| 1296 |
} |
| 1297 |
|
| 1298 |
QTAILQ_FOREACH_SAFE(vc, &non_vlan_clients, next, next_vc) {
|
| 1299 |
qemu_del_vlan_client(vc); |
| 1300 |
} |
| 1301 |
} |
| 1302 |
|
| 1303 |
void net_check_clients(void) |
| 1304 |
{
|
| 1305 |
VLANState *vlan; |
| 1306 |
VLANClientState *vc; |
| 1307 |
int seen_nics = 0; |
| 1308 |
|
| 1309 |
/* Don't warn about the default network setup that you get if
|
| 1310 |
* no command line -net options are specified. There are two
|
| 1311 |
* cases that we would otherwise complain about:
|
| 1312 |
* (1) board doesn't support a NIC but the implicit "-net nic"
|
| 1313 |
* requested one; we'd otherwise complain about more NICs being
|
| 1314 |
* specified than we support, and also that the vlan set up by
|
| 1315 |
* the implicit "-net user" didn't have any NICs connected to it
|
| 1316 |
* (2) CONFIG_SLIRP not set: we'd otherwise complain about the
|
| 1317 |
* implicit "-net nic" setting up a nic that wasn't connected to
|
| 1318 |
* anything.
|
| 1319 |
*/
|
| 1320 |
if (default_net) {
|
| 1321 |
return;
|
| 1322 |
} |
| 1323 |
|
| 1324 |
QTAILQ_FOREACH(vlan, &vlans, next) {
|
| 1325 |
int has_nic = 0, has_host_dev = 0; |
| 1326 |
|
| 1327 |
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
| 1328 |
switch (vc->info->type) {
|
| 1329 |
case NET_CLIENT_TYPE_NIC:
|
| 1330 |
seen_nics++; |
| 1331 |
has_nic = 1;
|
| 1332 |
break;
|
| 1333 |
case NET_CLIENT_TYPE_SLIRP:
|
| 1334 |
case NET_CLIENT_TYPE_TAP:
|
| 1335 |
case NET_CLIENT_TYPE_SOCKET:
|
| 1336 |
case NET_CLIENT_TYPE_VDE:
|
| 1337 |
has_host_dev = 1;
|
| 1338 |
break;
|
| 1339 |
default: ;
|
| 1340 |
} |
| 1341 |
} |
| 1342 |
if (has_host_dev && !has_nic)
|
| 1343 |
fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
|
| 1344 |
if (has_nic && !has_host_dev)
|
| 1345 |
fprintf(stderr, |
| 1346 |
"Warning: vlan %d is not connected to host network\n",
|
| 1347 |
vlan->id); |
| 1348 |
} |
| 1349 |
QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
|
| 1350 |
if (vc->info->type == NET_CLIENT_TYPE_NIC) {
|
| 1351 |
seen_nics++; |
| 1352 |
} |
| 1353 |
if (!vc->peer) {
|
| 1354 |
fprintf(stderr, "Warning: %s %s has no peer\n",
|
| 1355 |
vc->info->type == NET_CLIENT_TYPE_NIC ? "nic" : "netdev", |
| 1356 |
vc->name); |
| 1357 |
} |
| 1358 |
} |
| 1359 |
if (seen_nics != nb_nics) {
|
| 1360 |
/* Number of NICs requested by user on command line doesn't match
|
| 1361 |
* the number the model actually registered with us.
|
| 1362 |
* This will generally only happen for models of embedded boards
|
| 1363 |
* with no PCI bus or similar. PCI based machines can instantiate
|
| 1364 |
* all requested NICs as PCI devices but usually embedded boards
|
| 1365 |
* only have a single NIC.
|
| 1366 |
*/
|
| 1367 |
fprintf(stderr, "Warning: more nics requested than this machine "
|
| 1368 |
"supports; some have been ignored\n");
|
| 1369 |
} |
| 1370 |
} |
| 1371 |
|
| 1372 |
static int net_init_client(QemuOpts *opts, void *dummy) |
| 1373 |
{
|
| 1374 |
if (net_client_init(NULL, opts, 0) < 0) |
| 1375 |
return -1; |
| 1376 |
return 0; |
| 1377 |
} |
| 1378 |
|
| 1379 |
static int net_init_netdev(QemuOpts *opts, void *dummy) |
| 1380 |
{
|
| 1381 |
return net_client_init(NULL, opts, 1); |
| 1382 |
} |
| 1383 |
|
| 1384 |
int net_init_clients(void) |
| 1385 |
{
|
| 1386 |
QemuOptsList *net = qemu_find_opts("net");
|
| 1387 |
|
| 1388 |
if (default_net) {
|
| 1389 |
/* if no clients, we use a default config */
|
| 1390 |
qemu_opts_set(net, NULL, "type", "nic"); |
| 1391 |
#ifdef CONFIG_SLIRP
|
| 1392 |
qemu_opts_set(net, NULL, "type", "user"); |
| 1393 |
#endif
|
| 1394 |
} |
| 1395 |
|
| 1396 |
QTAILQ_INIT(&vlans); |
| 1397 |
QTAILQ_INIT(&non_vlan_clients); |
| 1398 |
|
| 1399 |
if (qemu_opts_foreach(qemu_find_opts("netdev"), net_init_netdev, NULL, 1) == -1) |
| 1400 |
return -1; |
| 1401 |
|
| 1402 |
if (qemu_opts_foreach(net, net_init_client, NULL, 1) == -1) { |
| 1403 |
return -1; |
| 1404 |
} |
| 1405 |
|
| 1406 |
return 0; |
| 1407 |
} |
| 1408 |
|
| 1409 |
int net_client_parse(QemuOptsList *opts_list, const char *optarg) |
| 1410 |
{
|
| 1411 |
#if defined(CONFIG_SLIRP)
|
| 1412 |
int ret;
|
| 1413 |
if (net_slirp_parse_legacy(opts_list, optarg, &ret)) {
|
| 1414 |
return ret;
|
| 1415 |
} |
| 1416 |
#endif
|
| 1417 |
|
| 1418 |
if (!qemu_opts_parse(opts_list, optarg, 1)) { |
| 1419 |
return -1; |
| 1420 |
} |
| 1421 |
|
| 1422 |
default_net = 0;
|
| 1423 |
return 0; |
| 1424 |
} |