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| 1 |
/*
|
|---|---|
| 2 |
* QEMU System Emulator
|
| 3 |
*
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| 4 |
* Copyright (c) 2003-2008 Fabrice Bellard
|
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*
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| 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
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| 10 |
* copies of the Software, and to permit persons to whom the Software is
|
| 11 |
* furnished to do so, subject to the following conditions:
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*
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* 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 "sysemu.h" |
| 36 |
#include "qemu-common.h" |
| 37 |
#include "qemu_socket.h" |
| 38 |
|
| 39 |
static QTAILQ_HEAD(, VLANState) vlans;
|
| 40 |
static QTAILQ_HEAD(, VLANClientState) non_vlan_clients;
|
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|
| 42 |
/***********************************************************/
|
| 43 |
/* network device redirectors */
|
| 44 |
|
| 45 |
#if defined(DEBUG_NET)
|
| 46 |
static void hex_dump(FILE *f, const uint8_t *buf, int size) |
| 47 |
{
|
| 48 |
int len, i, j, c;
|
| 49 |
|
| 50 |
for(i=0;i<size;i+=16) { |
| 51 |
len = size - i; |
| 52 |
if (len > 16) |
| 53 |
len = 16;
|
| 54 |
fprintf(f, "%08x ", i);
|
| 55 |
for(j=0;j<16;j++) { |
| 56 |
if (j < len)
|
| 57 |
fprintf(f, " %02x", buf[i+j]);
|
| 58 |
else
|
| 59 |
fprintf(f, " ");
|
| 60 |
} |
| 61 |
fprintf(f, " ");
|
| 62 |
for(j=0;j<len;j++) { |
| 63 |
c = buf[i+j]; |
| 64 |
if (c < ' ' || c > '~') |
| 65 |
c = '.';
|
| 66 |
fprintf(f, "%c", c);
|
| 67 |
} |
| 68 |
fprintf(f, "\n");
|
| 69 |
} |
| 70 |
} |
| 71 |
#endif
|
| 72 |
|
| 73 |
static int get_str_sep(char *buf, int buf_size, const char **pp, int sep) |
| 74 |
{
|
| 75 |
const char *p, *p1; |
| 76 |
int len;
|
| 77 |
p = *pp; |
| 78 |
p1 = strchr(p, sep); |
| 79 |
if (!p1)
|
| 80 |
return -1; |
| 81 |
len = p1 - p; |
| 82 |
p1++; |
| 83 |
if (buf_size > 0) { |
| 84 |
if (len > buf_size - 1) |
| 85 |
len = buf_size - 1;
|
| 86 |
memcpy(buf, p, len); |
| 87 |
buf[len] = '\0';
|
| 88 |
} |
| 89 |
*pp = p1; |
| 90 |
return 0; |
| 91 |
} |
| 92 |
|
| 93 |
int parse_host_src_port(struct sockaddr_in *haddr, |
| 94 |
struct sockaddr_in *saddr,
|
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const char *input_str) |
| 96 |
{
|
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char *str = strdup(input_str);
|
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char *host_str = str;
|
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char *src_str;
|
| 100 |
const char *src_str2; |
| 101 |
char *ptr;
|
| 102 |
|
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/*
|
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* Chop off any extra arguments at the end of the string which
|
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* would start with a comma, then fill in the src port information
|
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* if it was provided else use the "any address" and "any port".
|
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*/
|
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if ((ptr = strchr(str,','))) |
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*ptr = '\0';
|
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|
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if ((src_str = strchr(input_str,'@'))) { |
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*src_str = '\0';
|
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src_str++; |
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} |
| 115 |
|
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if (parse_host_port(haddr, host_str) < 0) |
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goto fail;
|
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|
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src_str2 = src_str; |
| 120 |
if (!src_str || *src_str == '\0') |
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src_str2 = ":0";
|
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|
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if (parse_host_port(saddr, src_str2) < 0) |
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goto fail;
|
| 125 |
|
| 126 |
free(str); |
| 127 |
return(0); |
| 128 |
|
| 129 |
fail:
|
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free(str); |
| 131 |
return -1; |
| 132 |
} |
| 133 |
|
| 134 |
int parse_host_port(struct sockaddr_in *saddr, const char *str) |
| 135 |
{
|
| 136 |
char buf[512]; |
| 137 |
struct hostent *he;
|
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const char *p, *r; |
| 139 |
int port;
|
| 140 |
|
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p = str; |
| 142 |
if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) |
| 143 |
return -1; |
| 144 |
saddr->sin_family = AF_INET; |
| 145 |
if (buf[0] == '\0') { |
| 146 |
saddr->sin_addr.s_addr = 0;
|
| 147 |
} else {
|
| 148 |
if (qemu_isdigit(buf[0])) { |
| 149 |
if (!inet_aton(buf, &saddr->sin_addr))
|
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return -1; |
| 151 |
} else {
|
| 152 |
if ((he = gethostbyname(buf)) == NULL) |
| 153 |
return - 1; |
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saddr->sin_addr = *(struct in_addr *)he->h_addr;
|
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} |
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} |
| 157 |
port = strtol(p, (char **)&r, 0); |
| 158 |
if (r == p)
|
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return -1; |
| 160 |
saddr->sin_port = htons(port); |
| 161 |
return 0; |
| 162 |
} |
| 163 |
|
| 164 |
void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6]) |
| 165 |
{
|
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snprintf(vc->info_str, sizeof(vc->info_str),
|
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"model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
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vc->model, |
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macaddr[0], macaddr[1], macaddr[2], |
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macaddr[3], macaddr[4], macaddr[5]); |
| 171 |
} |
| 172 |
|
| 173 |
void qemu_macaddr_default_if_unset(MACAddr *macaddr)
|
| 174 |
{
|
| 175 |
static int index = 0; |
| 176 |
static const MACAddr zero = { .a = { 0,0,0,0,0,0 } }; |
| 177 |
|
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if (memcmp(macaddr, &zero, sizeof(zero)) != 0) |
| 179 |
return;
|
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macaddr->a[0] = 0x52; |
| 181 |
macaddr->a[1] = 0x54; |
| 182 |
macaddr->a[2] = 0x00; |
| 183 |
macaddr->a[3] = 0x12; |
| 184 |
macaddr->a[4] = 0x34; |
| 185 |
macaddr->a[5] = 0x56 + index++; |
| 186 |
} |
| 187 |
|
| 188 |
static char *assign_name(VLANClientState *vc1, const char *model) |
| 189 |
{
|
| 190 |
VLANState *vlan; |
| 191 |
char buf[256]; |
| 192 |
int id = 0; |
| 193 |
|
| 194 |
QTAILQ_FOREACH(vlan, &vlans, next) {
|
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VLANClientState *vc; |
| 196 |
|
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QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
| 198 |
if (vc != vc1 && strcmp(vc->model, model) == 0) { |
| 199 |
id++; |
| 200 |
} |
| 201 |
} |
| 202 |
} |
| 203 |
|
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snprintf(buf, sizeof(buf), "%s.%d", model, id); |
| 205 |
|
| 206 |
return qemu_strdup(buf);
|
| 207 |
} |
| 208 |
|
| 209 |
static ssize_t qemu_deliver_packet(VLANClientState *sender,
|
| 210 |
unsigned flags,
|
| 211 |
const uint8_t *data,
|
| 212 |
size_t size, |
| 213 |
void *opaque);
|
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static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
|
| 215 |
unsigned flags,
|
| 216 |
const struct iovec *iov, |
| 217 |
int iovcnt,
|
| 218 |
void *opaque);
|
| 219 |
|
| 220 |
VLANClientState *qemu_new_net_client(NetClientInfo *info, |
| 221 |
VLANState *vlan, |
| 222 |
VLANClientState *peer, |
| 223 |
const char *model, |
| 224 |
const char *name) |
| 225 |
{
|
| 226 |
VLANClientState *vc; |
| 227 |
|
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assert(info->size >= sizeof(VLANClientState));
|
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|
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vc = qemu_mallocz(info->size); |
| 231 |
|
| 232 |
vc->type = info->type; |
| 233 |
vc->model = qemu_strdup(model); |
| 234 |
if (name) {
|
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vc->name = qemu_strdup(name); |
| 236 |
} else {
|
| 237 |
vc->name = assign_name(vc, model); |
| 238 |
} |
| 239 |
vc->can_receive = info->can_receive; |
| 240 |
vc->receive = info->receive; |
| 241 |
vc->receive_raw = info->receive_raw; |
| 242 |
vc->receive_iov = info->receive_iov; |
| 243 |
vc->cleanup = info->cleanup; |
| 244 |
vc->link_status_changed = info->link_status_changed; |
| 245 |
|
| 246 |
if (vlan) {
|
| 247 |
assert(!peer); |
| 248 |
vc->vlan = vlan; |
| 249 |
QTAILQ_INSERT_TAIL(&vc->vlan->clients, vc, next); |
| 250 |
} else {
|
| 251 |
if (peer) {
|
| 252 |
vc->peer = peer; |
| 253 |
peer->peer = vc; |
| 254 |
} |
| 255 |
QTAILQ_INSERT_TAIL(&non_vlan_clients, vc, next); |
| 256 |
|
| 257 |
vc->send_queue = qemu_new_net_queue(qemu_deliver_packet, |
| 258 |
qemu_deliver_packet_iov, |
| 259 |
vc); |
| 260 |
} |
| 261 |
|
| 262 |
return vc;
|
| 263 |
} |
| 264 |
|
| 265 |
NICState *qemu_new_nic(NetClientInfo *info, |
| 266 |
NICConf *conf, |
| 267 |
const char *model, |
| 268 |
const char *name, |
| 269 |
void *opaque)
|
| 270 |
{
|
| 271 |
VLANClientState *nc; |
| 272 |
NICState *nic; |
| 273 |
|
| 274 |
assert(info->type == NET_CLIENT_TYPE_NIC); |
| 275 |
assert(info->size >= sizeof(NICState));
|
| 276 |
|
| 277 |
nc = qemu_new_net_client(info, conf->vlan, conf->peer, model, name); |
| 278 |
|
| 279 |
nic = DO_UPCAST(NICState, nc, nc); |
| 280 |
nic->conf = conf; |
| 281 |
nic->opaque = opaque; |
| 282 |
|
| 283 |
return nic;
|
| 284 |
} |
| 285 |
|
| 286 |
VLANClientState *qemu_new_vlan_client(net_client_type type, |
| 287 |
VLANState *vlan, |
| 288 |
VLANClientState *peer, |
| 289 |
const char *model, |
| 290 |
const char *name, |
| 291 |
NetCanReceive *can_receive, |
| 292 |
NetReceive *receive, |
| 293 |
NetReceive *receive_raw, |
| 294 |
NetReceiveIOV *receive_iov, |
| 295 |
NetCleanup *cleanup, |
| 296 |
void *opaque)
|
| 297 |
{
|
| 298 |
VLANClientState *ret; |
| 299 |
NetClientInfo info; |
| 300 |
|
| 301 |
info.type = type; |
| 302 |
info.size = sizeof(VLANClientState);
|
| 303 |
info.can_receive = can_receive; |
| 304 |
info.receive = receive; |
| 305 |
info.receive_raw = receive_raw; |
| 306 |
info.receive_iov = receive_iov; |
| 307 |
info.cleanup = cleanup; |
| 308 |
info.link_status_changed = NULL;
|
| 309 |
|
| 310 |
ret = qemu_new_net_client(&info, vlan, peer, model, name); |
| 311 |
|
| 312 |
ret->opaque = opaque; |
| 313 |
|
| 314 |
return ret;
|
| 315 |
} |
| 316 |
|
| 317 |
void qemu_del_vlan_client(VLANClientState *vc)
|
| 318 |
{
|
| 319 |
if (vc->vlan) {
|
| 320 |
QTAILQ_REMOVE(&vc->vlan->clients, vc, next); |
| 321 |
} else {
|
| 322 |
if (vc->send_queue) {
|
| 323 |
qemu_del_net_queue(vc->send_queue); |
| 324 |
} |
| 325 |
QTAILQ_REMOVE(&non_vlan_clients, vc, next); |
| 326 |
if (vc->peer) {
|
| 327 |
vc->peer->peer = NULL;
|
| 328 |
} |
| 329 |
} |
| 330 |
|
| 331 |
if (vc->cleanup) {
|
| 332 |
vc->cleanup(vc); |
| 333 |
} |
| 334 |
|
| 335 |
qemu_free(vc->name); |
| 336 |
qemu_free(vc->model); |
| 337 |
qemu_free(vc); |
| 338 |
} |
| 339 |
|
| 340 |
VLANClientState *qemu_find_vlan_client(VLANState *vlan, void *opaque)
|
| 341 |
{
|
| 342 |
VLANClientState *vc; |
| 343 |
|
| 344 |
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
| 345 |
if (vc->opaque == opaque) {
|
| 346 |
return vc;
|
| 347 |
} |
| 348 |
} |
| 349 |
|
| 350 |
return NULL; |
| 351 |
} |
| 352 |
|
| 353 |
VLANClientState * |
| 354 |
qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
|
| 355 |
const char *client_str) |
| 356 |
{
|
| 357 |
VLANState *vlan; |
| 358 |
VLANClientState *vc; |
| 359 |
|
| 360 |
vlan = qemu_find_vlan(vlan_id, 0);
|
| 361 |
if (!vlan) {
|
| 362 |
monitor_printf(mon, "unknown VLAN %d\n", vlan_id);
|
| 363 |
return NULL; |
| 364 |
} |
| 365 |
|
| 366 |
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
| 367 |
if (!strcmp(vc->name, client_str)) {
|
| 368 |
break;
|
| 369 |
} |
| 370 |
} |
| 371 |
if (!vc) {
|
| 372 |
monitor_printf(mon, "can't find device %s on VLAN %d\n",
|
| 373 |
client_str, vlan_id); |
| 374 |
} |
| 375 |
|
| 376 |
return vc;
|
| 377 |
} |
| 378 |
|
| 379 |
int qemu_can_send_packet(VLANClientState *sender)
|
| 380 |
{
|
| 381 |
VLANState *vlan = sender->vlan; |
| 382 |
VLANClientState *vc; |
| 383 |
|
| 384 |
if (sender->peer) {
|
| 385 |
if (sender->peer->receive_disabled) {
|
| 386 |
return 0; |
| 387 |
} else if (sender->peer->can_receive && |
| 388 |
!sender->peer->can_receive(sender->peer)) {
|
| 389 |
return 0; |
| 390 |
} else {
|
| 391 |
return 1; |
| 392 |
} |
| 393 |
} |
| 394 |
|
| 395 |
if (!sender->vlan) {
|
| 396 |
return 1; |
| 397 |
} |
| 398 |
|
| 399 |
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
| 400 |
if (vc == sender) {
|
| 401 |
continue;
|
| 402 |
} |
| 403 |
|
| 404 |
/* no can_receive() handler, they can always receive */
|
| 405 |
if (!vc->can_receive || vc->can_receive(vc)) {
|
| 406 |
return 1; |
| 407 |
} |
| 408 |
} |
| 409 |
return 0; |
| 410 |
} |
| 411 |
|
| 412 |
static ssize_t qemu_deliver_packet(VLANClientState *sender,
|
| 413 |
unsigned flags,
|
| 414 |
const uint8_t *data,
|
| 415 |
size_t size, |
| 416 |
void *opaque)
|
| 417 |
{
|
| 418 |
VLANClientState *vc = opaque; |
| 419 |
ssize_t ret; |
| 420 |
|
| 421 |
if (vc->link_down) {
|
| 422 |
return size;
|
| 423 |
} |
| 424 |
|
| 425 |
if (vc->receive_disabled) {
|
| 426 |
return 0; |
| 427 |
} |
| 428 |
|
| 429 |
if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->receive_raw) {
|
| 430 |
ret = vc->receive_raw(vc, data, size); |
| 431 |
} else {
|
| 432 |
ret = vc->receive(vc, data, size); |
| 433 |
} |
| 434 |
|
| 435 |
if (ret == 0) { |
| 436 |
vc->receive_disabled = 1;
|
| 437 |
}; |
| 438 |
|
| 439 |
return ret;
|
| 440 |
} |
| 441 |
|
| 442 |
static ssize_t qemu_vlan_deliver_packet(VLANClientState *sender,
|
| 443 |
unsigned flags,
|
| 444 |
const uint8_t *buf,
|
| 445 |
size_t size, |
| 446 |
void *opaque)
|
| 447 |
{
|
| 448 |
VLANState *vlan = opaque; |
| 449 |
VLANClientState *vc; |
| 450 |
ssize_t ret = -1;
|
| 451 |
|
| 452 |
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
| 453 |
ssize_t len; |
| 454 |
|
| 455 |
if (vc == sender) {
|
| 456 |
continue;
|
| 457 |
} |
| 458 |
|
| 459 |
if (vc->link_down) {
|
| 460 |
ret = size; |
| 461 |
continue;
|
| 462 |
} |
| 463 |
|
| 464 |
if (vc->receive_disabled) {
|
| 465 |
ret = 0;
|
| 466 |
continue;
|
| 467 |
} |
| 468 |
|
| 469 |
if (flags & QEMU_NET_PACKET_FLAG_RAW && vc->receive_raw) {
|
| 470 |
len = vc->receive_raw(vc, buf, size); |
| 471 |
} else {
|
| 472 |
len = vc->receive(vc, buf, size); |
| 473 |
} |
| 474 |
|
| 475 |
if (len == 0) { |
| 476 |
vc->receive_disabled = 1;
|
| 477 |
} |
| 478 |
|
| 479 |
ret = (ret >= 0) ? ret : len;
|
| 480 |
|
| 481 |
} |
| 482 |
|
| 483 |
return ret;
|
| 484 |
} |
| 485 |
|
| 486 |
void qemu_purge_queued_packets(VLANClientState *vc)
|
| 487 |
{
|
| 488 |
NetQueue *queue; |
| 489 |
|
| 490 |
if (!vc->peer && !vc->vlan) {
|
| 491 |
return;
|
| 492 |
} |
| 493 |
|
| 494 |
if (vc->peer) {
|
| 495 |
queue = vc->peer->send_queue; |
| 496 |
} else {
|
| 497 |
queue = vc->vlan->send_queue; |
| 498 |
} |
| 499 |
|
| 500 |
qemu_net_queue_purge(queue, vc); |
| 501 |
} |
| 502 |
|
| 503 |
void qemu_flush_queued_packets(VLANClientState *vc)
|
| 504 |
{
|
| 505 |
NetQueue *queue; |
| 506 |
|
| 507 |
vc->receive_disabled = 0;
|
| 508 |
|
| 509 |
if (vc->vlan) {
|
| 510 |
queue = vc->vlan->send_queue; |
| 511 |
} else {
|
| 512 |
queue = vc->send_queue; |
| 513 |
} |
| 514 |
|
| 515 |
qemu_net_queue_flush(queue); |
| 516 |
} |
| 517 |
|
| 518 |
static ssize_t qemu_send_packet_async_with_flags(VLANClientState *sender,
|
| 519 |
unsigned flags,
|
| 520 |
const uint8_t *buf, int size, |
| 521 |
NetPacketSent *sent_cb) |
| 522 |
{
|
| 523 |
NetQueue *queue; |
| 524 |
|
| 525 |
#ifdef DEBUG_NET
|
| 526 |
printf("qemu_send_packet_async:\n");
|
| 527 |
hex_dump(stdout, buf, size); |
| 528 |
#endif
|
| 529 |
|
| 530 |
if (sender->link_down || (!sender->peer && !sender->vlan)) {
|
| 531 |
return size;
|
| 532 |
} |
| 533 |
|
| 534 |
if (sender->peer) {
|
| 535 |
queue = sender->peer->send_queue; |
| 536 |
} else {
|
| 537 |
queue = sender->vlan->send_queue; |
| 538 |
} |
| 539 |
|
| 540 |
return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb);
|
| 541 |
} |
| 542 |
|
| 543 |
ssize_t qemu_send_packet_async(VLANClientState *sender, |
| 544 |
const uint8_t *buf, int size, |
| 545 |
NetPacketSent *sent_cb) |
| 546 |
{
|
| 547 |
return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE,
|
| 548 |
buf, size, sent_cb); |
| 549 |
} |
| 550 |
|
| 551 |
void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size) |
| 552 |
{
|
| 553 |
qemu_send_packet_async(vc, buf, size, NULL);
|
| 554 |
} |
| 555 |
|
| 556 |
ssize_t qemu_send_packet_raw(VLANClientState *vc, const uint8_t *buf, int size) |
| 557 |
{
|
| 558 |
return qemu_send_packet_async_with_flags(vc, QEMU_NET_PACKET_FLAG_RAW,
|
| 559 |
buf, size, NULL);
|
| 560 |
} |
| 561 |
|
| 562 |
static ssize_t vc_sendv_compat(VLANClientState *vc, const struct iovec *iov, |
| 563 |
int iovcnt)
|
| 564 |
{
|
| 565 |
uint8_t buffer[4096];
|
| 566 |
size_t offset = 0;
|
| 567 |
int i;
|
| 568 |
|
| 569 |
for (i = 0; i < iovcnt; i++) { |
| 570 |
size_t len; |
| 571 |
|
| 572 |
len = MIN(sizeof(buffer) - offset, iov[i].iov_len);
|
| 573 |
memcpy(buffer + offset, iov[i].iov_base, len); |
| 574 |
offset += len; |
| 575 |
} |
| 576 |
|
| 577 |
return vc->receive(vc, buffer, offset);
|
| 578 |
} |
| 579 |
|
| 580 |
static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt) |
| 581 |
{
|
| 582 |
size_t offset = 0;
|
| 583 |
int i;
|
| 584 |
|
| 585 |
for (i = 0; i < iovcnt; i++) |
| 586 |
offset += iov[i].iov_len; |
| 587 |
return offset;
|
| 588 |
} |
| 589 |
|
| 590 |
static ssize_t qemu_deliver_packet_iov(VLANClientState *sender,
|
| 591 |
unsigned flags,
|
| 592 |
const struct iovec *iov, |
| 593 |
int iovcnt,
|
| 594 |
void *opaque)
|
| 595 |
{
|
| 596 |
VLANClientState *vc = opaque; |
| 597 |
|
| 598 |
if (vc->link_down) {
|
| 599 |
return calc_iov_length(iov, iovcnt);
|
| 600 |
} |
| 601 |
|
| 602 |
if (vc->receive_iov) {
|
| 603 |
return vc->receive_iov(vc, iov, iovcnt);
|
| 604 |
} else {
|
| 605 |
return vc_sendv_compat(vc, iov, iovcnt);
|
| 606 |
} |
| 607 |
} |
| 608 |
|
| 609 |
static ssize_t qemu_vlan_deliver_packet_iov(VLANClientState *sender,
|
| 610 |
unsigned flags,
|
| 611 |
const struct iovec *iov, |
| 612 |
int iovcnt,
|
| 613 |
void *opaque)
|
| 614 |
{
|
| 615 |
VLANState *vlan = opaque; |
| 616 |
VLANClientState *vc; |
| 617 |
ssize_t ret = -1;
|
| 618 |
|
| 619 |
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
| 620 |
ssize_t len; |
| 621 |
|
| 622 |
if (vc == sender) {
|
| 623 |
continue;
|
| 624 |
} |
| 625 |
|
| 626 |
if (vc->link_down) {
|
| 627 |
ret = calc_iov_length(iov, iovcnt); |
| 628 |
continue;
|
| 629 |
} |
| 630 |
|
| 631 |
assert(!(flags & QEMU_NET_PACKET_FLAG_RAW)); |
| 632 |
|
| 633 |
if (vc->receive_iov) {
|
| 634 |
len = vc->receive_iov(vc, iov, iovcnt); |
| 635 |
} else {
|
| 636 |
len = vc_sendv_compat(vc, iov, iovcnt); |
| 637 |
} |
| 638 |
|
| 639 |
ret = (ret >= 0) ? ret : len;
|
| 640 |
} |
| 641 |
|
| 642 |
return ret;
|
| 643 |
} |
| 644 |
|
| 645 |
ssize_t qemu_sendv_packet_async(VLANClientState *sender, |
| 646 |
const struct iovec *iov, int iovcnt, |
| 647 |
NetPacketSent *sent_cb) |
| 648 |
{
|
| 649 |
NetQueue *queue; |
| 650 |
|
| 651 |
if (sender->link_down || (!sender->peer && !sender->vlan)) {
|
| 652 |
return calc_iov_length(iov, iovcnt);
|
| 653 |
} |
| 654 |
|
| 655 |
if (sender->peer) {
|
| 656 |
queue = sender->peer->send_queue; |
| 657 |
} else {
|
| 658 |
queue = sender->vlan->send_queue; |
| 659 |
} |
| 660 |
|
| 661 |
return qemu_net_queue_send_iov(queue, sender,
|
| 662 |
QEMU_NET_PACKET_FLAG_NONE, |
| 663 |
iov, iovcnt, sent_cb); |
| 664 |
} |
| 665 |
|
| 666 |
ssize_t |
| 667 |
qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov, int iovcnt) |
| 668 |
{
|
| 669 |
return qemu_sendv_packet_async(vc, iov, iovcnt, NULL); |
| 670 |
} |
| 671 |
|
| 672 |
/* find or alloc a new VLAN */
|
| 673 |
VLANState *qemu_find_vlan(int id, int allocate) |
| 674 |
{
|
| 675 |
VLANState *vlan; |
| 676 |
|
| 677 |
QTAILQ_FOREACH(vlan, &vlans, next) {
|
| 678 |
if (vlan->id == id) {
|
| 679 |
return vlan;
|
| 680 |
} |
| 681 |
} |
| 682 |
|
| 683 |
if (!allocate) {
|
| 684 |
return NULL; |
| 685 |
} |
| 686 |
|
| 687 |
vlan = qemu_mallocz(sizeof(VLANState));
|
| 688 |
vlan->id = id; |
| 689 |
QTAILQ_INIT(&vlan->clients); |
| 690 |
|
| 691 |
vlan->send_queue = qemu_new_net_queue(qemu_vlan_deliver_packet, |
| 692 |
qemu_vlan_deliver_packet_iov, |
| 693 |
vlan); |
| 694 |
|
| 695 |
QTAILQ_INSERT_TAIL(&vlans, vlan, next); |
| 696 |
|
| 697 |
return vlan;
|
| 698 |
} |
| 699 |
|
| 700 |
VLANClientState *qemu_find_netdev(const char *id) |
| 701 |
{
|
| 702 |
VLANClientState *vc; |
| 703 |
|
| 704 |
QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
|
| 705 |
if (!strcmp(vc->name, id)) {
|
| 706 |
return vc;
|
| 707 |
} |
| 708 |
} |
| 709 |
|
| 710 |
return NULL; |
| 711 |
} |
| 712 |
|
| 713 |
static int nic_get_free_idx(void) |
| 714 |
{
|
| 715 |
int index;
|
| 716 |
|
| 717 |
for (index = 0; index < MAX_NICS; index++) |
| 718 |
if (!nd_table[index].used)
|
| 719 |
return index;
|
| 720 |
return -1; |
| 721 |
} |
| 722 |
|
| 723 |
int qemu_show_nic_models(const char *arg, const char *const *models) |
| 724 |
{
|
| 725 |
int i;
|
| 726 |
|
| 727 |
if (!arg || strcmp(arg, "?")) |
| 728 |
return 0; |
| 729 |
|
| 730 |
fprintf(stderr, "qemu: Supported NIC models: ");
|
| 731 |
for (i = 0 ; models[i]; i++) |
| 732 |
fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n'); |
| 733 |
return 1; |
| 734 |
} |
| 735 |
|
| 736 |
void qemu_check_nic_model(NICInfo *nd, const char *model) |
| 737 |
{
|
| 738 |
const char *models[2]; |
| 739 |
|
| 740 |
models[0] = model;
|
| 741 |
models[1] = NULL; |
| 742 |
|
| 743 |
if (qemu_show_nic_models(nd->model, models))
|
| 744 |
exit(0);
|
| 745 |
if (qemu_find_nic_model(nd, models, model) < 0) |
| 746 |
exit(1);
|
| 747 |
} |
| 748 |
|
| 749 |
int qemu_find_nic_model(NICInfo *nd, const char * const *models, |
| 750 |
const char *default_model) |
| 751 |
{
|
| 752 |
int i;
|
| 753 |
|
| 754 |
if (!nd->model)
|
| 755 |
nd->model = qemu_strdup(default_model); |
| 756 |
|
| 757 |
for (i = 0 ; models[i]; i++) { |
| 758 |
if (strcmp(nd->model, models[i]) == 0) |
| 759 |
return i;
|
| 760 |
} |
| 761 |
|
| 762 |
qemu_error("qemu: Unsupported NIC model: %s\n", nd->model);
|
| 763 |
return -1; |
| 764 |
} |
| 765 |
|
| 766 |
int net_handle_fd_param(Monitor *mon, const char *param) |
| 767 |
{
|
| 768 |
if (!qemu_isdigit(param[0])) { |
| 769 |
int fd;
|
| 770 |
|
| 771 |
fd = monitor_get_fd(mon, param); |
| 772 |
if (fd == -1) { |
| 773 |
qemu_error("No file descriptor named %s found", param);
|
| 774 |
return -1; |
| 775 |
} |
| 776 |
|
| 777 |
return fd;
|
| 778 |
} else {
|
| 779 |
return strtol(param, NULL, 0); |
| 780 |
} |
| 781 |
} |
| 782 |
|
| 783 |
static int net_init_nic(QemuOpts *opts, |
| 784 |
Monitor *mon, |
| 785 |
const char *name, |
| 786 |
VLANState *vlan) |
| 787 |
{
|
| 788 |
int idx;
|
| 789 |
NICInfo *nd; |
| 790 |
const char *netdev; |
| 791 |
|
| 792 |
idx = nic_get_free_idx(); |
| 793 |
if (idx == -1 || nb_nics >= MAX_NICS) { |
| 794 |
qemu_error("Too Many NICs\n");
|
| 795 |
return -1; |
| 796 |
} |
| 797 |
|
| 798 |
nd = &nd_table[idx]; |
| 799 |
|
| 800 |
memset(nd, 0, sizeof(*nd)); |
| 801 |
|
| 802 |
if ((netdev = qemu_opt_get(opts, "netdev"))) { |
| 803 |
nd->netdev = qemu_find_netdev(netdev); |
| 804 |
if (!nd->netdev) {
|
| 805 |
qemu_error("netdev '%s' not found\n", netdev);
|
| 806 |
return -1; |
| 807 |
} |
| 808 |
} else {
|
| 809 |
assert(vlan); |
| 810 |
nd->vlan = vlan; |
| 811 |
} |
| 812 |
if (name) {
|
| 813 |
nd->name = qemu_strdup(name); |
| 814 |
} |
| 815 |
if (qemu_opt_get(opts, "model")) { |
| 816 |
nd->model = qemu_strdup(qemu_opt_get(opts, "model"));
|
| 817 |
} |
| 818 |
if (qemu_opt_get(opts, "addr")) { |
| 819 |
nd->devaddr = qemu_strdup(qemu_opt_get(opts, "addr"));
|
| 820 |
} |
| 821 |
|
| 822 |
nd->macaddr[0] = 0x52; |
| 823 |
nd->macaddr[1] = 0x54; |
| 824 |
nd->macaddr[2] = 0x00; |
| 825 |
nd->macaddr[3] = 0x12; |
| 826 |
nd->macaddr[4] = 0x34; |
| 827 |
nd->macaddr[5] = 0x56 + idx; |
| 828 |
|
| 829 |
if (qemu_opt_get(opts, "macaddr") && |
| 830 |
net_parse_macaddr(nd->macaddr, qemu_opt_get(opts, "macaddr")) < 0) { |
| 831 |
qemu_error("invalid syntax for ethernet address\n");
|
| 832 |
return -1; |
| 833 |
} |
| 834 |
|
| 835 |
nd->nvectors = qemu_opt_get_number(opts, "vectors", NIC_NVECTORS_UNSPECIFIED);
|
| 836 |
if (nd->nvectors != NIC_NVECTORS_UNSPECIFIED &&
|
| 837 |
(nd->nvectors < 0 || nd->nvectors > 0x7ffffff)) { |
| 838 |
qemu_error("invalid # of vectors: %d\n", nd->nvectors);
|
| 839 |
return -1; |
| 840 |
} |
| 841 |
|
| 842 |
nd->used = 1;
|
| 843 |
if (vlan) {
|
| 844 |
nd->vlan->nb_guest_devs++; |
| 845 |
} |
| 846 |
nb_nics++; |
| 847 |
|
| 848 |
return idx;
|
| 849 |
} |
| 850 |
|
| 851 |
#define NET_COMMON_PARAMS_DESC \
|
| 852 |
{ \
|
| 853 |
.name = "type", \
|
| 854 |
.type = QEMU_OPT_STRING, \ |
| 855 |
.help = "net client type (nic, tap etc.)", \
|
| 856 |
}, { \
|
| 857 |
.name = "vlan", \
|
| 858 |
.type = QEMU_OPT_NUMBER, \ |
| 859 |
.help = "vlan number", \
|
| 860 |
}, { \
|
| 861 |
.name = "name", \
|
| 862 |
.type = QEMU_OPT_STRING, \ |
| 863 |
.help = "identifier for monitor commands", \
|
| 864 |
} |
| 865 |
|
| 866 |
typedef int (*net_client_init_func)(QemuOpts *opts, |
| 867 |
Monitor *mon, |
| 868 |
const char *name, |
| 869 |
VLANState *vlan); |
| 870 |
|
| 871 |
/* magic number, but compiler will warn if too small */
|
| 872 |
#define NET_MAX_DESC 20 |
| 873 |
|
| 874 |
static struct { |
| 875 |
const char *type; |
| 876 |
net_client_init_func init; |
| 877 |
QemuOptDesc desc[NET_MAX_DESC]; |
| 878 |
} net_client_types[] = {
|
| 879 |
{
|
| 880 |
.type = "none",
|
| 881 |
.desc = {
|
| 882 |
NET_COMMON_PARAMS_DESC, |
| 883 |
{ /* end of list */ }
|
| 884 |
}, |
| 885 |
}, {
|
| 886 |
.type = "nic",
|
| 887 |
.init = net_init_nic, |
| 888 |
.desc = {
|
| 889 |
NET_COMMON_PARAMS_DESC, |
| 890 |
{
|
| 891 |
.name = "netdev",
|
| 892 |
.type = QEMU_OPT_STRING, |
| 893 |
.help = "id of -netdev to connect to",
|
| 894 |
}, |
| 895 |
{
|
| 896 |
.name = "macaddr",
|
| 897 |
.type = QEMU_OPT_STRING, |
| 898 |
.help = "MAC address",
|
| 899 |
}, {
|
| 900 |
.name = "model",
|
| 901 |
.type = QEMU_OPT_STRING, |
| 902 |
.help = "device model (e1000, rtl8139, virtio etc.)",
|
| 903 |
}, {
|
| 904 |
.name = "addr",
|
| 905 |
.type = QEMU_OPT_STRING, |
| 906 |
.help = "PCI device address",
|
| 907 |
}, {
|
| 908 |
.name = "vectors",
|
| 909 |
.type = QEMU_OPT_NUMBER, |
| 910 |
.help = "number of MSI-x vectors, 0 to disable MSI-X",
|
| 911 |
}, |
| 912 |
{ /* end of list */ }
|
| 913 |
}, |
| 914 |
#ifdef CONFIG_SLIRP
|
| 915 |
}, {
|
| 916 |
.type = "user",
|
| 917 |
.init = net_init_slirp, |
| 918 |
.desc = {
|
| 919 |
NET_COMMON_PARAMS_DESC, |
| 920 |
{
|
| 921 |
.name = "hostname",
|
| 922 |
.type = QEMU_OPT_STRING, |
| 923 |
.help = "client hostname reported by the builtin DHCP server",
|
| 924 |
}, {
|
| 925 |
.name = "restrict",
|
| 926 |
.type = QEMU_OPT_STRING, |
| 927 |
.help = "isolate the guest from the host (y|yes|n|no)",
|
| 928 |
}, {
|
| 929 |
.name = "ip",
|
| 930 |
.type = QEMU_OPT_STRING, |
| 931 |
.help = "legacy parameter, use net= instead",
|
| 932 |
}, {
|
| 933 |
.name = "net",
|
| 934 |
.type = QEMU_OPT_STRING, |
| 935 |
.help = "IP address and optional netmask",
|
| 936 |
}, {
|
| 937 |
.name = "host",
|
| 938 |
.type = QEMU_OPT_STRING, |
| 939 |
.help = "guest-visible address of the host",
|
| 940 |
}, {
|
| 941 |
.name = "tftp",
|
| 942 |
.type = QEMU_OPT_STRING, |
| 943 |
.help = "root directory of the built-in TFTP server",
|
| 944 |
}, {
|
| 945 |
.name = "bootfile",
|
| 946 |
.type = QEMU_OPT_STRING, |
| 947 |
.help = "BOOTP filename, for use with tftp=",
|
| 948 |
}, {
|
| 949 |
.name = "dhcpstart",
|
| 950 |
.type = QEMU_OPT_STRING, |
| 951 |
.help = "the first of the 16 IPs the built-in DHCP server can assign",
|
| 952 |
}, {
|
| 953 |
.name = "dns",
|
| 954 |
.type = QEMU_OPT_STRING, |
| 955 |
.help = "guest-visible address of the virtual nameserver",
|
| 956 |
}, {
|
| 957 |
.name = "smb",
|
| 958 |
.type = QEMU_OPT_STRING, |
| 959 |
.help = "root directory of the built-in SMB server",
|
| 960 |
}, {
|
| 961 |
.name = "smbserver",
|
| 962 |
.type = QEMU_OPT_STRING, |
| 963 |
.help = "IP address of the built-in SMB server",
|
| 964 |
}, {
|
| 965 |
.name = "hostfwd",
|
| 966 |
.type = QEMU_OPT_STRING, |
| 967 |
.help = "guest port number to forward incoming TCP or UDP connections",
|
| 968 |
}, {
|
| 969 |
.name = "guestfwd",
|
| 970 |
.type = QEMU_OPT_STRING, |
| 971 |
.help = "IP address and port to forward guest TCP connections",
|
| 972 |
}, |
| 973 |
{ /* end of list */ }
|
| 974 |
}, |
| 975 |
#endif
|
| 976 |
}, {
|
| 977 |
.type = "tap",
|
| 978 |
.init = net_init_tap, |
| 979 |
.desc = {
|
| 980 |
NET_COMMON_PARAMS_DESC, |
| 981 |
{
|
| 982 |
.name = "ifname",
|
| 983 |
.type = QEMU_OPT_STRING, |
| 984 |
.help = "interface name",
|
| 985 |
}, |
| 986 |
#ifndef _WIN32
|
| 987 |
{
|
| 988 |
.name = "fd",
|
| 989 |
.type = QEMU_OPT_STRING, |
| 990 |
.help = "file descriptor of an already opened tap",
|
| 991 |
}, {
|
| 992 |
.name = "script",
|
| 993 |
.type = QEMU_OPT_STRING, |
| 994 |
.help = "script to initialize the interface",
|
| 995 |
}, {
|
| 996 |
.name = "downscript",
|
| 997 |
.type = QEMU_OPT_STRING, |
| 998 |
.help = "script to shut down the interface",
|
| 999 |
}, {
|
| 1000 |
.name = "sndbuf",
|
| 1001 |
.type = QEMU_OPT_SIZE, |
| 1002 |
.help = "send buffer limit"
|
| 1003 |
}, {
|
| 1004 |
.name = "vnet_hdr",
|
| 1005 |
.type = QEMU_OPT_BOOL, |
| 1006 |
.help = "enable the IFF_VNET_HDR flag on the tap interface"
|
| 1007 |
}, |
| 1008 |
#endif /* _WIN32 */ |
| 1009 |
{ /* end of list */ }
|
| 1010 |
}, |
| 1011 |
}, {
|
| 1012 |
.type = "socket",
|
| 1013 |
.init = net_init_socket, |
| 1014 |
.desc = {
|
| 1015 |
NET_COMMON_PARAMS_DESC, |
| 1016 |
{
|
| 1017 |
.name = "fd",
|
| 1018 |
.type = QEMU_OPT_STRING, |
| 1019 |
.help = "file descriptor of an already opened socket",
|
| 1020 |
}, {
|
| 1021 |
.name = "listen",
|
| 1022 |
.type = QEMU_OPT_STRING, |
| 1023 |
.help = "port number, and optional hostname, to listen on",
|
| 1024 |
}, {
|
| 1025 |
.name = "connect",
|
| 1026 |
.type = QEMU_OPT_STRING, |
| 1027 |
.help = "port number, and optional hostname, to connect to",
|
| 1028 |
}, {
|
| 1029 |
.name = "mcast",
|
| 1030 |
.type = QEMU_OPT_STRING, |
| 1031 |
.help = "UDP multicast address and port number",
|
| 1032 |
}, |
| 1033 |
{ /* end of list */ }
|
| 1034 |
}, |
| 1035 |
#ifdef CONFIG_VDE
|
| 1036 |
}, {
|
| 1037 |
.type = "vde",
|
| 1038 |
.init = net_init_vde, |
| 1039 |
.desc = {
|
| 1040 |
NET_COMMON_PARAMS_DESC, |
| 1041 |
{
|
| 1042 |
.name = "sock",
|
| 1043 |
.type = QEMU_OPT_STRING, |
| 1044 |
.help = "socket path",
|
| 1045 |
}, {
|
| 1046 |
.name = "port",
|
| 1047 |
.type = QEMU_OPT_NUMBER, |
| 1048 |
.help = "port number",
|
| 1049 |
}, {
|
| 1050 |
.name = "group",
|
| 1051 |
.type = QEMU_OPT_STRING, |
| 1052 |
.help = "group owner of socket",
|
| 1053 |
}, {
|
| 1054 |
.name = "mode",
|
| 1055 |
.type = QEMU_OPT_NUMBER, |
| 1056 |
.help = "permissions for socket",
|
| 1057 |
}, |
| 1058 |
{ /* end of list */ }
|
| 1059 |
}, |
| 1060 |
#endif
|
| 1061 |
}, {
|
| 1062 |
.type = "dump",
|
| 1063 |
.init = net_init_dump, |
| 1064 |
.desc = {
|
| 1065 |
NET_COMMON_PARAMS_DESC, |
| 1066 |
{
|
| 1067 |
.name = "len",
|
| 1068 |
.type = QEMU_OPT_SIZE, |
| 1069 |
.help = "per-packet size limit (64k default)",
|
| 1070 |
}, {
|
| 1071 |
.name = "file",
|
| 1072 |
.type = QEMU_OPT_STRING, |
| 1073 |
.help = "dump file path (default is qemu-vlan0.pcap)",
|
| 1074 |
}, |
| 1075 |
{ /* end of list */ }
|
| 1076 |
}, |
| 1077 |
}, |
| 1078 |
{ /* end of list */ }
|
| 1079 |
}; |
| 1080 |
|
| 1081 |
int net_client_init(Monitor *mon, QemuOpts *opts, int is_netdev) |
| 1082 |
{
|
| 1083 |
const char *name; |
| 1084 |
const char *type; |
| 1085 |
int i;
|
| 1086 |
|
| 1087 |
type = qemu_opt_get(opts, "type");
|
| 1088 |
if (!type) {
|
| 1089 |
qemu_error("No type specified for -net\n");
|
| 1090 |
return -1; |
| 1091 |
} |
| 1092 |
|
| 1093 |
if (is_netdev) {
|
| 1094 |
if (strcmp(type, "tap") != 0 && |
| 1095 |
#ifdef CONFIG_SLIRP
|
| 1096 |
strcmp(type, "user") != 0 && |
| 1097 |
#endif
|
| 1098 |
#ifdef CONFIG_VDE
|
| 1099 |
strcmp(type, "vde") != 0 && |
| 1100 |
#endif
|
| 1101 |
strcmp(type, "socket") != 0) { |
| 1102 |
qemu_error("The '%s' network backend type is not valid with -netdev\n",
|
| 1103 |
type); |
| 1104 |
return -1; |
| 1105 |
} |
| 1106 |
|
| 1107 |
if (qemu_opt_get(opts, "vlan")) { |
| 1108 |
qemu_error("The 'vlan' parameter is not valid with -netdev\n");
|
| 1109 |
return -1; |
| 1110 |
} |
| 1111 |
if (qemu_opt_get(opts, "name")) { |
| 1112 |
qemu_error("The 'name' parameter is not valid with -netdev\n");
|
| 1113 |
return -1; |
| 1114 |
} |
| 1115 |
if (!qemu_opts_id(opts)) {
|
| 1116 |
qemu_error("The id= parameter is required with -netdev\n");
|
| 1117 |
return -1; |
| 1118 |
} |
| 1119 |
} |
| 1120 |
|
| 1121 |
name = qemu_opts_id(opts); |
| 1122 |
if (!name) {
|
| 1123 |
name = qemu_opt_get(opts, "name");
|
| 1124 |
} |
| 1125 |
|
| 1126 |
for (i = 0; net_client_types[i].type != NULL; i++) { |
| 1127 |
if (!strcmp(net_client_types[i].type, type)) {
|
| 1128 |
VLANState *vlan = NULL;
|
| 1129 |
|
| 1130 |
if (qemu_opts_validate(opts, &net_client_types[i].desc[0]) == -1) { |
| 1131 |
return -1; |
| 1132 |
} |
| 1133 |
|
| 1134 |
/* Do not add to a vlan if it's a -netdev or a nic with a
|
| 1135 |
* netdev= parameter. */
|
| 1136 |
if (!(is_netdev ||
|
| 1137 |
(strcmp(type, "nic") == 0 && qemu_opt_get(opts, "netdev")))) { |
| 1138 |
vlan = qemu_find_vlan(qemu_opt_get_number(opts, "vlan", 0), 1); |
| 1139 |
} |
| 1140 |
|
| 1141 |
if (net_client_types[i].init) {
|
| 1142 |
return net_client_types[i].init(opts, mon, name, vlan);
|
| 1143 |
} else {
|
| 1144 |
return 0; |
| 1145 |
} |
| 1146 |
} |
| 1147 |
} |
| 1148 |
|
| 1149 |
qemu_error("Invalid -net type '%s'\n", type);
|
| 1150 |
return -1; |
| 1151 |
} |
| 1152 |
|
| 1153 |
void net_client_uninit(NICInfo *nd)
|
| 1154 |
{
|
| 1155 |
if (nd->vlan) {
|
| 1156 |
nd->vlan->nb_guest_devs--; |
| 1157 |
} |
| 1158 |
nb_nics--; |
| 1159 |
|
| 1160 |
qemu_free(nd->model); |
| 1161 |
qemu_free(nd->name); |
| 1162 |
qemu_free(nd->devaddr); |
| 1163 |
|
| 1164 |
nd->used = 0;
|
| 1165 |
} |
| 1166 |
|
| 1167 |
static int net_host_check_device(const char *device) |
| 1168 |
{
|
| 1169 |
int i;
|
| 1170 |
const char *valid_param_list[] = { "tap", "socket", "dump" |
| 1171 |
#ifdef CONFIG_SLIRP
|
| 1172 |
,"user"
|
| 1173 |
#endif
|
| 1174 |
#ifdef CONFIG_VDE
|
| 1175 |
,"vde"
|
| 1176 |
#endif
|
| 1177 |
}; |
| 1178 |
for (i = 0; i < sizeof(valid_param_list) / sizeof(char *); i++) { |
| 1179 |
if (!strncmp(valid_param_list[i], device,
|
| 1180 |
strlen(valid_param_list[i]))) |
| 1181 |
return 1; |
| 1182 |
} |
| 1183 |
|
| 1184 |
return 0; |
| 1185 |
} |
| 1186 |
|
| 1187 |
void net_host_device_add(Monitor *mon, const QDict *qdict) |
| 1188 |
{
|
| 1189 |
const char *device = qdict_get_str(qdict, "device"); |
| 1190 |
const char *opts_str = qdict_get_try_str(qdict, "opts"); |
| 1191 |
QemuOpts *opts; |
| 1192 |
|
| 1193 |
if (!net_host_check_device(device)) {
|
| 1194 |
monitor_printf(mon, "invalid host network device %s\n", device);
|
| 1195 |
return;
|
| 1196 |
} |
| 1197 |
|
| 1198 |
opts = qemu_opts_parse(&qemu_net_opts, opts_str ? opts_str : "", NULL); |
| 1199 |
if (!opts) {
|
| 1200 |
monitor_printf(mon, "parsing network options '%s' failed\n",
|
| 1201 |
opts_str ? opts_str : "");
|
| 1202 |
return;
|
| 1203 |
} |
| 1204 |
|
| 1205 |
qemu_opt_set(opts, "type", device);
|
| 1206 |
|
| 1207 |
if (net_client_init(mon, opts, 0) < 0) { |
| 1208 |
monitor_printf(mon, "adding host network device %s failed\n", device);
|
| 1209 |
} |
| 1210 |
} |
| 1211 |
|
| 1212 |
void net_host_device_remove(Monitor *mon, const QDict *qdict) |
| 1213 |
{
|
| 1214 |
VLANClientState *vc; |
| 1215 |
int vlan_id = qdict_get_int(qdict, "vlan_id"); |
| 1216 |
const char *device = qdict_get_str(qdict, "device"); |
| 1217 |
|
| 1218 |
vc = qemu_find_vlan_client_by_name(mon, vlan_id, device); |
| 1219 |
if (!vc) {
|
| 1220 |
return;
|
| 1221 |
} |
| 1222 |
if (!net_host_check_device(vc->model)) {
|
| 1223 |
monitor_printf(mon, "invalid host network device %s\n", device);
|
| 1224 |
return;
|
| 1225 |
} |
| 1226 |
qemu_del_vlan_client(vc); |
| 1227 |
} |
| 1228 |
|
| 1229 |
void net_set_boot_mask(int net_boot_mask) |
| 1230 |
{
|
| 1231 |
int i;
|
| 1232 |
|
| 1233 |
/* Only the first four NICs may be bootable */
|
| 1234 |
net_boot_mask = net_boot_mask & 0xF;
|
| 1235 |
|
| 1236 |
for (i = 0; i < nb_nics; i++) { |
| 1237 |
if (net_boot_mask & (1 << i)) { |
| 1238 |
nd_table[i].bootable = 1;
|
| 1239 |
net_boot_mask &= ~(1 << i);
|
| 1240 |
} |
| 1241 |
} |
| 1242 |
|
| 1243 |
if (net_boot_mask) {
|
| 1244 |
fprintf(stderr, "Cannot boot from non-existent NIC\n");
|
| 1245 |
exit(1);
|
| 1246 |
} |
| 1247 |
} |
| 1248 |
|
| 1249 |
void do_info_network(Monitor *mon)
|
| 1250 |
{
|
| 1251 |
VLANState *vlan; |
| 1252 |
|
| 1253 |
QTAILQ_FOREACH(vlan, &vlans, next) {
|
| 1254 |
VLANClientState *vc; |
| 1255 |
|
| 1256 |
monitor_printf(mon, "VLAN %d devices:\n", vlan->id);
|
| 1257 |
|
| 1258 |
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
| 1259 |
monitor_printf(mon, " %s: %s\n", vc->name, vc->info_str);
|
| 1260 |
} |
| 1261 |
} |
| 1262 |
} |
| 1263 |
|
| 1264 |
void do_set_link(Monitor *mon, const QDict *qdict) |
| 1265 |
{
|
| 1266 |
VLANState *vlan; |
| 1267 |
VLANClientState *vc = NULL;
|
| 1268 |
const char *name = qdict_get_str(qdict, "name"); |
| 1269 |
const char *up_or_down = qdict_get_str(qdict, "up_or_down"); |
| 1270 |
|
| 1271 |
QTAILQ_FOREACH(vlan, &vlans, next) {
|
| 1272 |
QTAILQ_FOREACH(vc, &vlan->clients, next) {
|
| 1273 |
if (strcmp(vc->name, name) == 0) { |
| 1274 |
goto done;
|
| 1275 |
} |
| 1276 |
} |
| 1277 |
} |
| 1278 |
done:
|
| 1279 |
|
| 1280 |
if (!vc) {
|
| 1281 |
monitor_printf(mon, "could not find network device '%s'\n", name);
|
| 1282 |
return;
|
| 1283 |
} |
| 1284 |
|
| 1285 |
if (strcmp(up_or_down, "up") == 0) |
| 1286 |
vc->link_down = 0;
|
| 1287 |
else if (strcmp(up_or_down, "down") == 0) |
| 1288 |
vc->link_down = 1;
|
| 1289 |
else
|
| 1290 |
monitor_printf(mon, "invalid link status '%s'; only 'up' or 'down' "
|
| 1291 |
"valid\n", up_or_down);
|
| 1292 |
|
| 1293 |
if (vc->link_status_changed)
|
| 1294 |
vc->link_status_changed(vc); |
| 1295 |
} |
| 1296 |
|
| 1297 |
void net_cleanup(void) |
| 1298 |
{
|
| 1299 |
VLANState *vlan; |
| 1300 |
VLANClientState *vc, *next_vc; |
| 1301 |
|
| 1302 |
QTAILQ_FOREACH(vlan, &vlans, next) {
|
| 1303 |
QTAILQ_FOREACH_SAFE(vc, &vlan->clients, next, next_vc) {
|
| 1304 |
qemu_del_vlan_client(vc); |
| 1305 |
} |
| 1306 |
} |
| 1307 |
|
| 1308 |
QTAILQ_FOREACH_SAFE(vc, &non_vlan_clients, next, next_vc) {
|
| 1309 |
qemu_del_vlan_client(vc); |
| 1310 |
} |
| 1311 |
} |
| 1312 |
|
| 1313 |
static void net_check_clients(void) |
| 1314 |
{
|
| 1315 |
VLANState *vlan; |
| 1316 |
|
| 1317 |
QTAILQ_FOREACH(vlan, &vlans, next) {
|
| 1318 |
if (vlan->nb_guest_devs == 0 && vlan->nb_host_devs == 0) |
| 1319 |
continue;
|
| 1320 |
if (vlan->nb_guest_devs == 0) |
| 1321 |
fprintf(stderr, "Warning: vlan %d with no nics\n", vlan->id);
|
| 1322 |
if (vlan->nb_host_devs == 0) |
| 1323 |
fprintf(stderr, |
| 1324 |
"Warning: vlan %d is not connected to host network\n",
|
| 1325 |
vlan->id); |
| 1326 |
} |
| 1327 |
} |
| 1328 |
|
| 1329 |
static int net_init_client(QemuOpts *opts, void *dummy) |
| 1330 |
{
|
| 1331 |
if (net_client_init(NULL, opts, 0) < 0) |
| 1332 |
return -1; |
| 1333 |
return 0; |
| 1334 |
} |
| 1335 |
|
| 1336 |
static int net_init_netdev(QemuOpts *opts, void *dummy) |
| 1337 |
{
|
| 1338 |
return net_client_init(NULL, opts, 1); |
| 1339 |
} |
| 1340 |
|
| 1341 |
int net_init_clients(void) |
| 1342 |
{
|
| 1343 |
if (QTAILQ_EMPTY(&qemu_net_opts.head)) {
|
| 1344 |
/* if no clients, we use a default config */
|
| 1345 |
qemu_opts_set(&qemu_net_opts, NULL, "type", "nic"); |
| 1346 |
#ifdef CONFIG_SLIRP
|
| 1347 |
qemu_opts_set(&qemu_net_opts, NULL, "type", "user"); |
| 1348 |
#endif
|
| 1349 |
} |
| 1350 |
|
| 1351 |
QTAILQ_INIT(&vlans); |
| 1352 |
QTAILQ_INIT(&non_vlan_clients); |
| 1353 |
|
| 1354 |
if (qemu_opts_foreach(&qemu_netdev_opts, net_init_netdev, NULL, 1) == -1) |
| 1355 |
return -1; |
| 1356 |
|
| 1357 |
if (qemu_opts_foreach(&qemu_net_opts, net_init_client, NULL, 1) == -1) { |
| 1358 |
return -1; |
| 1359 |
} |
| 1360 |
|
| 1361 |
net_check_clients(); |
| 1362 |
|
| 1363 |
return 0; |
| 1364 |
} |
| 1365 |
|
| 1366 |
int net_client_parse(QemuOptsList *opts_list, const char *optarg) |
| 1367 |
{
|
| 1368 |
#if defined(CONFIG_SLIRP)
|
| 1369 |
int ret;
|
| 1370 |
if (net_slirp_parse_legacy(opts_list, optarg, &ret)) {
|
| 1371 |
return ret;
|
| 1372 |
} |
| 1373 |
#endif
|
| 1374 |
|
| 1375 |
if (!qemu_opts_parse(opts_list, optarg, "type")) { |
| 1376 |
return -1; |
| 1377 |
} |
| 1378 |
|
| 1379 |
return 0; |
| 1380 |
} |