blob: 11b505a6fd43f9f1d35df1e15dab69fe1f8f10ed [file] [log] [blame]
aliguori63a01ef2008-10-31 19:10:00 +00001/*
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 */
Markus Armbrustere688df62018-02-01 12:18:31 +010024
Peter Maydell2744d922016-01-29 17:50:00 +000025#include "qemu/osdep.h"
blueswir1d40cdb12009-03-07 16:52:02 +000026
Paolo Bonzini1422e322012-10-24 08:43:34 +020027#include "net/net.h"
Paolo Bonzinifd9400b2012-10-24 11:27:28 +020028#include "clients.h"
29#include "hub.h"
Markus Armbrustera27bd6c2019-08-12 07:23:51 +020030#include "hw/qdev-properties.h"
Paolo Bonzini1422e322012-10-24 08:43:34 +020031#include "net/slirp.h"
Dmitry Krivenokd60b20c2013-10-21 12:08:44 +040032#include "net/eth.h"
Paolo Bonzinifd9400b2012-10-24 11:27:28 +020033#include "util.h"
Paolo Bonzinia245fc12012-09-17 18:43:51 +020034
Paolo Bonzini83c90892012-12-17 18:19:49 +010035#include "monitor/monitor.h"
Veronia Bahaaf348b6d2016-03-20 19:16:19 +020036#include "qemu/help_option.h"
Markus Armbruster9af23982018-02-11 10:36:01 +010037#include "qapi/qapi-commands-net.h"
38#include "qapi/qapi-visit-net.h"
Markus Armbruster452fcdb2018-02-01 12:18:39 +010039#include "qapi/qmp/qdict.h"
Markus Armbrustercc7a8ea2015-03-17 17:22:46 +010040#include "qapi/qmp/qerror.h"
Markus Armbrusterd49b6832015-03-17 18:29:20 +010041#include "qemu/error-report.h"
Paolo Bonzini1de7afc2012-12-17 18:20:00 +010042#include "qemu/sockets.h"
Veronia Bahaaf348b6d2016-03-20 19:16:19 +020043#include "qemu/cutils.h"
Paolo Bonzini1de7afc2012-12-17 18:20:00 +010044#include "qemu/config-file.h"
Markus Armbruster856dfd82019-05-23 16:35:06 +020045#include "qemu/ctype.h"
Paolo Bonzini1de7afc2012-12-17 18:20:00 +010046#include "qemu/iov.h"
Alex Bligh6a1751b2013-08-21 16:02:47 +010047#include "qemu/main-loop.h"
Markus Armbruster922a01a2018-02-01 12:18:46 +010048#include "qemu/option.h"
Markus Armbrustere688df62018-02-01 12:18:31 +010049#include "qapi/error.h"
Laszlo Ersek6687b792012-07-17 16:17:13 +020050#include "qapi/opts-visitor.h"
zhanghailiange1d64c02014-08-26 16:06:17 +080051#include "sysemu/sysemu.h"
Thomas Huth559964a2017-05-15 15:32:56 +020052#include "sysemu/qtest.h"
Yang Hongyangfdccce42015-10-07 11:52:14 +080053#include "net/filter.h"
zhanghailiangaa9156f2016-01-26 14:43:33 +080054#include "qapi/string-output-visitor.h"
blueswir1511d2b12009-03-07 15:32:56 +000055
Stefan Weil2944e4e2012-02-04 09:24:46 +010056/* Net bridge is currently not supported for W32. */
57#if !defined(_WIN32)
58# define CONFIG_NET_BRIDGE
59#endif
60
Michael S. Tsirkinca77d852014-09-04 11:39:13 +030061static VMChangeStateEntry *net_change_state_entry;
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +010062static QTAILQ_HEAD(, NetClientState) net_clients;
aliguori63a01ef2008-10-31 19:10:00 +000063
64/***********************************************************/
65/* network device redirectors */
66
Mao Zhongyibcd4dfd2017-09-04 22:35:39 +080067int parse_host_port(struct sockaddr_in *saddr, const char *str,
68 Error **errp)
aliguori63a01ef2008-10-31 19:10:00 +000069{
Stefano Garzarellaadd99342019-05-17 15:47:47 +020070 gchar **substrings;
aliguori63a01ef2008-10-31 19:10:00 +000071 struct hostent *he;
Stefano Garzarellaadd99342019-05-17 15:47:47 +020072 const char *addr, *p, *r;
73 int port, ret = 0;
aliguori63a01ef2008-10-31 19:10:00 +000074
Stefano Garzarellaadd99342019-05-17 15:47:47 +020075 substrings = g_strsplit(str, ":", 2);
76 if (!substrings || !substrings[0] || !substrings[1]) {
Mao Zhongyibcd4dfd2017-09-04 22:35:39 +080077 error_setg(errp, "host address '%s' doesn't contain ':' "
78 "separating host from port", str);
Stefano Garzarellaadd99342019-05-17 15:47:47 +020079 ret = -1;
80 goto out;
Mao Zhongyibcd4dfd2017-09-04 22:35:39 +080081 }
Stefano Garzarellaadd99342019-05-17 15:47:47 +020082
83 addr = substrings[0];
84 p = substrings[1];
85
aliguori63a01ef2008-10-31 19:10:00 +000086 saddr->sin_family = AF_INET;
Stefano Garzarellaadd99342019-05-17 15:47:47 +020087 if (addr[0] == '\0') {
aliguori63a01ef2008-10-31 19:10:00 +000088 saddr->sin_addr.s_addr = 0;
89 } else {
Stefano Garzarellaadd99342019-05-17 15:47:47 +020090 if (qemu_isdigit(addr[0])) {
91 if (!inet_aton(addr, &saddr->sin_addr)) {
Mao Zhongyibcd4dfd2017-09-04 22:35:39 +080092 error_setg(errp, "host address '%s' is not a valid "
Stefano Garzarellaadd99342019-05-17 15:47:47 +020093 "IPv4 address", addr);
94 ret = -1;
95 goto out;
Mao Zhongyibcd4dfd2017-09-04 22:35:39 +080096 }
aliguori63a01ef2008-10-31 19:10:00 +000097 } else {
Stefano Garzarellaadd99342019-05-17 15:47:47 +020098 he = gethostbyname(addr);
Mao Zhongyibcd4dfd2017-09-04 22:35:39 +080099 if (he == NULL) {
Stefano Garzarellaadd99342019-05-17 15:47:47 +0200100 error_setg(errp, "can't resolve host address '%s'", addr);
101 ret = -1;
102 goto out;
Mao Zhongyibcd4dfd2017-09-04 22:35:39 +0800103 }
aliguori63a01ef2008-10-31 19:10:00 +0000104 saddr->sin_addr = *(struct in_addr *)he->h_addr;
105 }
106 }
107 port = strtol(p, (char **)&r, 0);
Mao Zhongyibcd4dfd2017-09-04 22:35:39 +0800108 if (r == p) {
109 error_setg(errp, "port number '%s' is invalid", p);
Stefano Garzarellaadd99342019-05-17 15:47:47 +0200110 ret = -1;
111 goto out;
Mao Zhongyibcd4dfd2017-09-04 22:35:39 +0800112 }
aliguori63a01ef2008-10-31 19:10:00 +0000113 saddr->sin_port = htons(port);
Stefano Garzarellaadd99342019-05-17 15:47:47 +0200114
115out:
116 g_strfreev(substrings);
117 return ret;
aliguori63a01ef2008-10-31 19:10:00 +0000118}
119
Scott Feldman890ee6a2015-03-13 21:09:25 -0700120char *qemu_mac_strdup_printf(const uint8_t *macaddr)
121{
122 return g_strdup_printf("%.2x:%.2x:%.2x:%.2x:%.2x:%.2x",
123 macaddr[0], macaddr[1], macaddr[2],
124 macaddr[3], macaddr[4], macaddr[5]);
125}
126
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100127void qemu_format_nic_info_str(NetClientState *nc, uint8_t macaddr[6])
aliguori7cb7434b2009-01-07 17:46:21 +0000128{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100129 snprintf(nc->info_str, sizeof(nc->info_str),
aliguori4dda4062009-01-08 19:01:37 +0000130 "model=%s,macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100131 nc->model,
aliguori7cb7434b2009-01-07 17:46:21 +0000132 macaddr[0], macaddr[1], macaddr[2],
133 macaddr[3], macaddr[4], macaddr[5]);
134}
135
Shannon Zhao2bc22a52015-05-21 17:44:48 +0800136static int mac_table[256] = {0};
137
138static void qemu_macaddr_set_used(MACAddr *macaddr)
139{
140 int index;
141
142 for (index = 0x56; index < 0xFF; index++) {
143 if (macaddr->a[5] == index) {
144 mac_table[index]++;
145 }
146 }
147}
148
149static void qemu_macaddr_set_free(MACAddr *macaddr)
150{
151 int index;
152 static const MACAddr base = { .a = { 0x52, 0x54, 0x00, 0x12, 0x34, 0 } };
153
154 if (memcmp(macaddr->a, &base.a, (sizeof(base.a) - 1)) != 0) {
155 return;
156 }
157 for (index = 0x56; index < 0xFF; index++) {
158 if (macaddr->a[5] == index) {
159 mac_table[index]--;
160 }
161 }
162}
163
164static int qemu_macaddr_get_free(void)
165{
166 int index;
167
168 for (index = 0x56; index < 0xFF; index++) {
169 if (mac_table[index] == 0) {
170 return index;
171 }
172 }
173
174 return -1;
175}
176
Gerd Hoffmann76d32cb2009-10-21 15:25:22 +0200177void qemu_macaddr_default_if_unset(MACAddr *macaddr)
178{
Gerd Hoffmann76d32cb2009-10-21 15:25:22 +0200179 static const MACAddr zero = { .a = { 0,0,0,0,0,0 } };
Shannon Zhao2bc22a52015-05-21 17:44:48 +0800180 static const MACAddr base = { .a = { 0x52, 0x54, 0x00, 0x12, 0x34, 0 } };
Gerd Hoffmann76d32cb2009-10-21 15:25:22 +0200181
Shannon Zhao2bc22a52015-05-21 17:44:48 +0800182 if (memcmp(macaddr, &zero, sizeof(zero)) != 0) {
183 if (memcmp(macaddr->a, &base.a, (sizeof(base.a) - 1)) != 0) {
184 return;
185 } else {
186 qemu_macaddr_set_used(macaddr);
187 return;
188 }
189 }
190
Gerd Hoffmann76d32cb2009-10-21 15:25:22 +0200191 macaddr->a[0] = 0x52;
192 macaddr->a[1] = 0x54;
193 macaddr->a[2] = 0x00;
194 macaddr->a[3] = 0x12;
195 macaddr->a[4] = 0x34;
Shannon Zhao2bc22a52015-05-21 17:44:48 +0800196 macaddr->a[5] = qemu_macaddr_get_free();
197 qemu_macaddr_set_used(macaddr);
Gerd Hoffmann76d32cb2009-10-21 15:25:22 +0200198}
199
Stefan Hajnoczid33d93b2012-07-24 16:35:05 +0100200/**
201 * Generate a name for net client
202 *
Amos Kongc9635302013-04-15 18:55:19 +0800203 * Only net clients created with the legacy -net option and NICs need this.
Stefan Hajnoczid33d93b2012-07-24 16:35:05 +0100204 */
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100205static char *assign_name(NetClientState *nc1, const char *model)
aliguori676cff22009-01-07 17:43:44 +0000206{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100207 NetClientState *nc;
aliguori676cff22009-01-07 17:43:44 +0000208 int id = 0;
209
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100210 QTAILQ_FOREACH(nc, &net_clients, next) {
211 if (nc == nc1) {
Stefan Hajnoczid33d93b2012-07-24 16:35:05 +0100212 continue;
Mark McLoughlin5610c3a2009-10-08 19:58:23 +0100213 }
Amos Kongc9635302013-04-15 18:55:19 +0800214 if (strcmp(nc->model, model) == 0) {
Markus Armbruster53e51d82011-06-16 18:45:36 +0200215 id++;
216 }
217 }
218
Hani Benhabiles4bf2c132014-01-09 19:34:27 +0100219 return g_strdup_printf("%s.%d", model, id);
aliguori676cff22009-01-07 17:43:44 +0000220}
221
Jason Wangf7860452013-01-30 19:12:27 +0800222static void qemu_net_client_destructor(NetClientState *nc)
223{
224 g_free(nc);
225}
Jason Wang25c01bd2018-12-04 11:53:43 +0800226static ssize_t qemu_deliver_packet_iov(NetClientState *sender,
227 unsigned flags,
228 const struct iovec *iov,
229 int iovcnt,
230 void *opaque);
Jason Wangf7860452013-01-30 19:12:27 +0800231
Jason Wang18a15412013-01-30 19:12:26 +0800232static void qemu_net_client_setup(NetClientState *nc,
233 NetClientInfo *info,
234 NetClientState *peer,
235 const char *model,
Jason Wangf7860452013-01-30 19:12:27 +0800236 const char *name,
237 NetClientDestructor *destructor)
aliguori63a01ef2008-10-31 19:10:00 +0000238{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100239 nc->info = info;
240 nc->model = g_strdup(model);
Mark McLoughlin45460d12009-11-25 18:49:02 +0000241 if (name) {
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100242 nc->name = g_strdup(name);
Mark McLoughlin45460d12009-11-25 18:49:02 +0000243 } else {
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100244 nc->name = assign_name(nc, model);
Mark McLoughlin45460d12009-11-25 18:49:02 +0000245 }
aliguori63a01ef2008-10-31 19:10:00 +0000246
Stefan Hajnocziab5f3f82012-07-24 16:35:08 +0100247 if (peer) {
248 assert(!peer->peer);
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100249 nc->peer = peer;
250 peer->peer = nc;
Mark McLoughlind80b9fc2009-10-08 19:58:24 +0100251 }
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100252 QTAILQ_INSERT_TAIL(&net_clients, nc, next);
Mark McLoughlin5610c3a2009-10-08 19:58:23 +0100253
Yang Hongyang3e033a42015-10-07 11:52:17 +0800254 nc->incoming_queue = qemu_new_net_queue(qemu_deliver_packet_iov, nc);
Jason Wangf7860452013-01-30 19:12:27 +0800255 nc->destructor = destructor;
Yang Hongyangfdccce42015-10-07 11:52:14 +0800256 QTAILQ_INIT(&nc->filters);
Jason Wang18a15412013-01-30 19:12:26 +0800257}
258
259NetClientState *qemu_new_net_client(NetClientInfo *info,
260 NetClientState *peer,
261 const char *model,
262 const char *name)
263{
264 NetClientState *nc;
265
266 assert(info->size >= sizeof(NetClientState));
267
268 nc = g_malloc0(info->size);
Jason Wangf7860452013-01-30 19:12:27 +0800269 qemu_net_client_setup(nc, info, peer, model, name,
270 qemu_net_client_destructor);
Jason Wang18a15412013-01-30 19:12:26 +0800271
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100272 return nc;
aliguori63a01ef2008-10-31 19:10:00 +0000273}
274
Mark McLoughlinebef2c02009-11-25 18:49:10 +0000275NICState *qemu_new_nic(NetClientInfo *info,
276 NICConf *conf,
277 const char *model,
278 const char *name,
279 void *opaque)
280{
Jason Wang1ceef9f2013-01-30 19:12:28 +0800281 NetClientState **peers = conf->peers.ncs;
Mark McLoughlinebef2c02009-11-25 18:49:10 +0000282 NICState *nic;
Jiri Pirko575a1c02014-05-26 12:04:08 +0200283 int i, queues = MAX(1, conf->peers.queues);
Mark McLoughlinebef2c02009-11-25 18:49:10 +0000284
Eric Blakef394b2e2016-07-13 21:50:23 -0600285 assert(info->type == NET_CLIENT_DRIVER_NIC);
Mark McLoughlinebef2c02009-11-25 18:49:10 +0000286 assert(info->size >= sizeof(NICState));
287
Jason Wangf6b26cf2013-02-22 23:15:06 +0800288 nic = g_malloc0(info->size + sizeof(NetClientState) * queues);
289 nic->ncs = (void *)nic + info->size;
Mark McLoughlinebef2c02009-11-25 18:49:10 +0000290 nic->conf = conf;
291 nic->opaque = opaque;
292
Jason Wangf6b26cf2013-02-22 23:15:06 +0800293 for (i = 0; i < queues; i++) {
294 qemu_net_client_setup(&nic->ncs[i], info, peers[i], model, name,
Jason Wang1ceef9f2013-01-30 19:12:28 +0800295 NULL);
296 nic->ncs[i].queue_index = i;
297 }
298
Mark McLoughlinebef2c02009-11-25 18:49:10 +0000299 return nic;
300}
301
Jason Wang1ceef9f2013-01-30 19:12:28 +0800302NetClientState *qemu_get_subqueue(NICState *nic, int queue_index)
303{
Jason Wangf6b26cf2013-02-22 23:15:06 +0800304 return nic->ncs + queue_index;
Jason Wang1ceef9f2013-01-30 19:12:28 +0800305}
306
Jason Wangb356f762013-01-30 19:12:22 +0800307NetClientState *qemu_get_queue(NICState *nic)
308{
Jason Wang1ceef9f2013-01-30 19:12:28 +0800309 return qemu_get_subqueue(nic, 0);
Jason Wangb356f762013-01-30 19:12:22 +0800310}
311
Jason Wangcc1f0f42013-01-30 19:12:23 +0800312NICState *qemu_get_nic(NetClientState *nc)
313{
Jason Wang1ceef9f2013-01-30 19:12:28 +0800314 NetClientState *nc0 = nc - nc->queue_index;
315
Jason Wangf6b26cf2013-02-22 23:15:06 +0800316 return (NICState *)((void *)nc0 - nc->info->size);
Jason Wangcc1f0f42013-01-30 19:12:23 +0800317}
318
319void *qemu_get_nic_opaque(NetClientState *nc)
320{
321 NICState *nic = qemu_get_nic(nc);
322
323 return nic->opaque;
324}
325
Stefan Hajnoczib20c6b92012-07-24 16:35:15 +0100326static void qemu_cleanup_net_client(NetClientState *nc)
aliguori63a01ef2008-10-31 19:10:00 +0000327{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100328 QTAILQ_REMOVE(&net_clients, nc, next);
aliguori63a01ef2008-10-31 19:10:00 +0000329
Andreas Färbercc2a9042013-02-12 23:16:06 +0100330 if (nc->info->cleanup) {
331 nc->info->cleanup(nc);
332 }
Michael S. Tsirkina083a892010-09-20 18:08:41 +0200333}
Mark McLoughlin5610c3a2009-10-08 19:58:23 +0100334
Stefan Hajnoczib20c6b92012-07-24 16:35:15 +0100335static void qemu_free_net_client(NetClientState *nc)
Michael S. Tsirkina083a892010-09-20 18:08:41 +0200336{
Jan Kiszka067404b2013-08-02 21:47:08 +0200337 if (nc->incoming_queue) {
338 qemu_del_net_queue(nc->incoming_queue);
Michael S. Tsirkina083a892010-09-20 18:08:41 +0200339 }
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100340 if (nc->peer) {
341 nc->peer->peer = NULL;
Mark McLoughlin5610c3a2009-10-08 19:58:23 +0100342 }
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100343 g_free(nc->name);
344 g_free(nc->model);
Jason Wangf7860452013-01-30 19:12:27 +0800345 if (nc->destructor) {
346 nc->destructor(nc);
347 }
aliguori63a01ef2008-10-31 19:10:00 +0000348}
349
Stefan Hajnoczib20c6b92012-07-24 16:35:15 +0100350void qemu_del_net_client(NetClientState *nc)
Michael S. Tsirkina083a892010-09-20 18:08:41 +0200351{
Jason Wang1ceef9f2013-01-30 19:12:28 +0800352 NetClientState *ncs[MAX_QUEUE_NUM];
353 int queues, i;
Yang Hongyangfdccce42015-10-07 11:52:14 +0800354 NetFilterState *nf, *next;
Jason Wang1ceef9f2013-01-30 19:12:28 +0800355
Eric Blakef394b2e2016-07-13 21:50:23 -0600356 assert(nc->info->type != NET_CLIENT_DRIVER_NIC);
Paolo Bonzini7fb43912014-12-23 17:53:20 +0100357
Jason Wang1ceef9f2013-01-30 19:12:28 +0800358 /* If the NetClientState belongs to a multiqueue backend, we will change all
359 * other NetClientStates also.
360 */
361 queues = qemu_find_net_clients_except(nc->name, ncs,
Eric Blakef394b2e2016-07-13 21:50:23 -0600362 NET_CLIENT_DRIVER_NIC,
Jason Wang1ceef9f2013-01-30 19:12:28 +0800363 MAX_QUEUE_NUM);
364 assert(queues != 0);
365
Yang Hongyangfdccce42015-10-07 11:52:14 +0800366 QTAILQ_FOREACH_SAFE(nf, &nc->filters, next, next) {
367 object_unparent(OBJECT(nf));
368 }
369
Michael S. Tsirkina083a892010-09-20 18:08:41 +0200370 /* If there is a peer NIC, delete and cleanup client, but do not free. */
Eric Blakef394b2e2016-07-13 21:50:23 -0600371 if (nc->peer && nc->peer->info->type == NET_CLIENT_DRIVER_NIC) {
Jason Wangcc1f0f42013-01-30 19:12:23 +0800372 NICState *nic = qemu_get_nic(nc->peer);
Michael S. Tsirkina083a892010-09-20 18:08:41 +0200373 if (nic->peer_deleted) {
374 return;
375 }
376 nic->peer_deleted = true;
Jason Wang1ceef9f2013-01-30 19:12:28 +0800377
378 for (i = 0; i < queues; i++) {
379 ncs[i]->peer->link_down = true;
380 }
381
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100382 if (nc->peer->info->link_status_changed) {
383 nc->peer->info->link_status_changed(nc->peer);
Michael S. Tsirkina083a892010-09-20 18:08:41 +0200384 }
Jason Wang1ceef9f2013-01-30 19:12:28 +0800385
386 for (i = 0; i < queues; i++) {
387 qemu_cleanup_net_client(ncs[i]);
388 }
389
Michael S. Tsirkina083a892010-09-20 18:08:41 +0200390 return;
391 }
392
Jason Wang1ceef9f2013-01-30 19:12:28 +0800393 for (i = 0; i < queues; i++) {
394 qemu_cleanup_net_client(ncs[i]);
395 qemu_free_net_client(ncs[i]);
396 }
Jason Wang948ecf22013-01-30 19:12:24 +0800397}
398
399void qemu_del_nic(NICState *nic)
400{
Jiri Pirko575a1c02014-05-26 12:04:08 +0200401 int i, queues = MAX(nic->conf->peers.queues, 1);
Jason Wang1ceef9f2013-01-30 19:12:28 +0800402
Shannon Zhao2bc22a52015-05-21 17:44:48 +0800403 qemu_macaddr_set_free(&nic->conf->macaddr);
404
Michael S. Tsirkina083a892010-09-20 18:08:41 +0200405 /* If this is a peer NIC and peer has already been deleted, free it now. */
Jason Wang1ceef9f2013-01-30 19:12:28 +0800406 if (nic->peer_deleted) {
407 for (i = 0; i < queues; i++) {
408 qemu_free_net_client(qemu_get_subqueue(nic, i)->peer);
Michael S. Tsirkina083a892010-09-20 18:08:41 +0200409 }
410 }
411
Jason Wang1ceef9f2013-01-30 19:12:28 +0800412 for (i = queues - 1; i >= 0; i--) {
413 NetClientState *nc = qemu_get_subqueue(nic, i);
414
415 qemu_cleanup_net_client(nc);
416 qemu_free_net_client(nc);
417 }
Jason Wangf6b26cf2013-02-22 23:15:06 +0800418
419 g_free(nic);
Jan Kiszka1a609522009-06-24 14:42:31 +0200420}
421
Mark McLoughlin57f9ef12009-11-25 18:49:31 +0000422void qemu_foreach_nic(qemu_nic_foreach func, void *opaque)
423{
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100424 NetClientState *nc;
Mark McLoughlin57f9ef12009-11-25 18:49:31 +0000425
Stefan Hajnoczi94878992012-07-24 16:35:12 +0100426 QTAILQ_FOREACH(nc, &net_clients, next) {
Eric Blakef394b2e2016-07-13 21:50:23 -0600427 if (nc->info->type == NET_CLIENT_DRIVER_NIC) {
Jason Wang1ceef9f2013-01-30 19:12:28 +0800428 if (nc->queue_index == 0) {
429 func(qemu_get_nic(nc), opaque);
430 }
Mark McLoughlin57f9ef12009-11-25 18:49:31 +0000431 }
432 }
Mark McLoughlin57f9ef12009-11-25 18:49:31 +0000433}
434
Stefan Hajnoczid6085e32014-02-20 12:14:07 +0100435bool qemu_has_ufo(NetClientState *nc)
Vincenzo Maffione1f55ac42014-02-06 17:02:16 +0100436{
Stefan Hajnoczid6085e32014-02-20 12:14:07 +0100437 if (!nc || !nc->info->has_ufo) {
Vincenzo Maffione1f55ac42014-02-06 17:02:16 +0100438 return false;
439 }
440
Stefan Hajnoczid6085e32014-02-20 12:14:07 +0100441 return nc->info->has_ufo(nc);
Vincenzo Maffione1f55ac42014-02-06 17:02:16 +0100442}
443
Stefan Hajnoczid6085e32014-02-20 12:14:07 +0100444bool qemu_has_vnet_hdr(NetClientState *nc)
Vincenzo Maffione1f55ac42014-02-06 17:02:16 +0100445{
Stefan Hajnoczid6085e32014-02-20 12:14:07 +0100446 if (!nc || !nc->info->has_vnet_hdr) {
Vincenzo Maffione1f55ac42014-02-06 17:02:16 +0100447 return false;
448 }
449
Stefan Hajnoczid6085e32014-02-20 12:14:07 +0100450 return nc->info->has_vnet_hdr(nc);
Vincenzo Maffione1f55ac42014-02-06 17:02:16 +0100451}
452
Stefan Hajnoczid6085e32014-02-20 12:14:07 +0100453bool qemu_has_vnet_hdr_len(NetClientState *nc, int len)
Vincenzo Maffione1f55ac42014-02-06 17:02:16 +0100454{
Stefan Hajnoczid6085e32014-02-20 12:14:07 +0100455 if (!nc || !nc->info->has_vnet_hdr_len) {
Vincenzo Maffione1f55ac42014-02-06 17:02:16 +0100456 return false;
457 }
458
Stefan Hajnoczid6085e32014-02-20 12:14:07 +0100459 return nc->info->has_vnet_hdr_len(nc, len);
Vincenzo Maffione1f55ac42014-02-06 17:02:16 +0100460}
461
Stefan Hajnoczid6085e32014-02-20 12:14:07 +0100462void qemu_using_vnet_hdr(NetClientState *nc, bool enable)
Vincenzo Maffione1f55ac42014-02-06 17:02:16 +0100463{
Stefan Hajnoczid6085e32014-02-20 12:14:07 +0100464 if (!nc || !nc->info->using_vnet_hdr) {
Vincenzo Maffione1f55ac42014-02-06 17:02:16 +0100465 return;
466 }
467
Stefan Hajnoczid6085e32014-02-20 12:14:07 +0100468 nc->info->using_vnet_hdr(nc, enable);
Vincenzo Maffione1f55ac42014-02-06 17:02:16 +0100469}
470
Stefan Hajnoczid6085e32014-02-20 12:14:07 +0100471void qemu_set_offload(NetClientState *nc, int csum, int tso4, int tso6,
Vincenzo Maffione1f55ac42014-02-06 17:02:16 +0100472 int ecn, int ufo)
473{
Stefan Hajnoczid6085e32014-02-20 12:14:07 +0100474 if (!nc || !nc->info->set_offload) {
Vincenzo Maffione1f55ac42014-02-06 17:02:16 +0100475 return;
476 }
477
Stefan Hajnoczid6085e32014-02-20 12:14:07 +0100478 nc->info->set_offload(nc, csum, tso4, tso6, ecn, ufo);
Vincenzo Maffione1f55ac42014-02-06 17:02:16 +0100479}
480
Stefan Hajnoczid6085e32014-02-20 12:14:07 +0100481void qemu_set_vnet_hdr_len(NetClientState *nc, int len)
Vincenzo Maffione1f55ac42014-02-06 17:02:16 +0100482{
Stefan Hajnoczid6085e32014-02-20 12:14:07 +0100483 if (!nc || !nc->info->set_vnet_hdr_len) {
Vincenzo Maffione1f55ac42014-02-06 17:02:16 +0100484 return;
485 }
486
Zhang Chend6b732e2017-07-04 14:53:45 +0800487 nc->vnet_hdr_len = len;
Stefan Hajnoczid6085e32014-02-20 12:14:07 +0100488 nc->info->set_vnet_hdr_len(nc, len);
Vincenzo Maffione1f55ac42014-02-06 17:02:16 +0100489}
490
Greg Kurzc80cd6b2015-06-17 15:23:44 +0200491int qemu_set_vnet_le(NetClientState *nc, bool is_le)
492{
Michael S. Tsirkin052bd522015-10-14 12:11:27 +0300493#ifdef HOST_WORDS_BIGENDIAN
Greg Kurzc80cd6b2015-06-17 15:23:44 +0200494 if (!nc || !nc->info->set_vnet_le) {
495 return -ENOSYS;
496 }
497
498 return nc->info->set_vnet_le(nc, is_le);
Michael S. Tsirkin052bd522015-10-14 12:11:27 +0300499#else
500 return 0;
501#endif
Greg Kurzc80cd6b2015-06-17 15:23:44 +0200502}
503
504int qemu_set_vnet_be(NetClientState *nc, bool is_be)
505{
Michael S. Tsirkin052bd522015-10-14 12:11:27 +0300506#ifdef HOST_WORDS_BIGENDIAN
507 return 0;
508#else
Greg Kurzc80cd6b2015-06-17 15:23:44 +0200509 if (!nc || !nc->info->set_vnet_be) {
510 return -ENOSYS;
511 }
512
513 return nc->info->set_vnet_be(nc, is_be);
Michael S. Tsirkin052bd522015-10-14 12:11:27 +0300514#endif
Greg Kurzc80cd6b2015-06-17 15:23:44 +0200515}
516
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100517int qemu_can_send_packet(NetClientState *sender)
aliguori63a01ef2008-10-31 19:10:00 +0000518{
zhanghailiange1d64c02014-08-26 16:06:17 +0800519 int vm_running = runstate_is_running();
520
521 if (!vm_running) {
522 return 0;
523 }
524
Stefan Hajnoczia005d072012-07-24 16:35:11 +0100525 if (!sender->peer) {
Mark McLoughlind80b9fc2009-10-08 19:58:24 +0100526 return 1;
527 }
528
Stefan Hajnoczia005d072012-07-24 16:35:11 +0100529 if (sender->peer->receive_disabled) {
530 return 0;
531 } else if (sender->peer->info->can_receive &&
532 !sender->peer->info->can_receive(sender->peer)) {
533 return 0;
aliguori63a01ef2008-10-31 19:10:00 +0000534 }
Vincent Palatin60c07d92011-03-02 17:25:02 -0500535 return 1;
aliguori63a01ef2008-10-31 19:10:00 +0000536}
537
Yang Hongyange64c7702015-10-07 11:52:15 +0800538static ssize_t filter_receive_iov(NetClientState *nc,
539 NetFilterDirection direction,
540 NetClientState *sender,
541 unsigned flags,
542 const struct iovec *iov,
543 int iovcnt,
544 NetPacketSent *sent_cb)
545{
546 ssize_t ret = 0;
547 NetFilterState *nf = NULL;
548
Li Zhijian25aaadf2016-01-26 13:00:22 +0800549 if (direction == NET_FILTER_DIRECTION_TX) {
550 QTAILQ_FOREACH(nf, &nc->filters, next) {
551 ret = qemu_netfilter_receive(nf, direction, sender, flags, iov,
552 iovcnt, sent_cb);
553 if (ret) {
554 return ret;
555 }
556 }
557 } else {
Paolo Bonzinieae3eb32018-12-06 13:10:34 +0100558 QTAILQ_FOREACH_REVERSE(nf, &nc->filters, next) {
Li Zhijian25aaadf2016-01-26 13:00:22 +0800559 ret = qemu_netfilter_receive(nf, direction, sender, flags, iov,
560 iovcnt, sent_cb);
561 if (ret) {
562 return ret;
563 }
Yang Hongyange64c7702015-10-07 11:52:15 +0800564 }
565 }
566
567 return ret;
568}
569
570static ssize_t filter_receive(NetClientState *nc,
571 NetFilterDirection direction,
572 NetClientState *sender,
573 unsigned flags,
574 const uint8_t *data,
575 size_t size,
576 NetPacketSent *sent_cb)
577{
578 struct iovec iov = {
579 .iov_base = (void *)data,
580 .iov_len = size
581 };
582
583 return filter_receive_iov(nc, direction, sender, flags, &iov, 1, sent_cb);
584}
585
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100586void qemu_purge_queued_packets(NetClientState *nc)
aliguori63a01ef2008-10-31 19:10:00 +0000587{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100588 if (!nc->peer) {
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100589 return;
590 }
591
Jan Kiszka067404b2013-08-02 21:47:08 +0200592 qemu_net_queue_purge(nc->peer->incoming_queue, nc);
Mark McLoughlin8cad5512009-06-18 18:21:29 +0100593}
594
Michael S. Tsirkinca77d852014-09-04 11:39:13 +0300595void qemu_flush_or_purge_queued_packets(NetClientState *nc, bool purge)
Mark McLoughline94667b2009-04-29 11:48:12 +0100596{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100597 nc->receive_disabled = 0;
Mark McLoughlind80b9fc2009-10-08 19:58:24 +0100598
Eric Blakef394b2e2016-07-13 21:50:23 -0600599 if (nc->peer && nc->peer->info->type == NET_CLIENT_DRIVER_HUBPORT) {
Luigi Rizzo199ee602013-02-05 17:53:31 +0100600 if (net_hub_flush(nc->peer)) {
601 qemu_notify_event();
602 }
Luigi Rizzo199ee602013-02-05 17:53:31 +0100603 }
Jan Kiszka067404b2013-08-02 21:47:08 +0200604 if (qemu_net_queue_flush(nc->incoming_queue)) {
Paolo Bonzini987a9b42012-08-09 16:45:55 +0200605 /* We emptied the queue successfully, signal to the IO thread to repoll
606 * the file descriptor (for tap, for example).
607 */
608 qemu_notify_event();
Michael S. Tsirkinca77d852014-09-04 11:39:13 +0300609 } else if (purge) {
610 /* Unable to empty the queue, purge remaining packets */
611 qemu_net_queue_purge(nc->incoming_queue, nc);
Paolo Bonzini987a9b42012-08-09 16:45:55 +0200612 }
Mark McLoughline94667b2009-04-29 11:48:12 +0100613}
614
Michael S. Tsirkinca77d852014-09-04 11:39:13 +0300615void qemu_flush_queued_packets(NetClientState *nc)
616{
617 qemu_flush_or_purge_queued_packets(nc, false);
618}
619
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100620static ssize_t qemu_send_packet_async_with_flags(NetClientState *sender,
Mark McLoughlinca77d172009-10-22 17:43:41 +0100621 unsigned flags,
622 const uint8_t *buf, int size,
623 NetPacketSent *sent_cb)
aliguori764a4d12009-04-21 19:56:41 +0000624{
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100625 NetQueue *queue;
Yang Hongyange64c7702015-10-07 11:52:15 +0800626 int ret;
Mark McLoughline94667b2009-04-29 11:48:12 +0100627
Mark McLoughlinf3b6c7f2009-04-29 12:15:26 +0100628#ifdef DEBUG_NET
Mark McLoughlind80b9fc2009-10-08 19:58:24 +0100629 printf("qemu_send_packet_async:\n");
Isaac Lozanoa1555552016-03-25 03:42:15 -0700630 qemu_hexdump((const char *)buf, stdout, "net", size);
Mark McLoughlinf3b6c7f2009-04-29 12:15:26 +0100631#endif
632
Stefan Hajnoczia005d072012-07-24 16:35:11 +0100633 if (sender->link_down || !sender->peer) {
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100634 return size;
635 }
636
Yang Hongyange64c7702015-10-07 11:52:15 +0800637 /* Let filters handle the packet first */
638 ret = filter_receive(sender, NET_FILTER_DIRECTION_TX,
639 sender, flags, buf, size, sent_cb);
640 if (ret) {
641 return ret;
642 }
643
644 ret = filter_receive(sender->peer, NET_FILTER_DIRECTION_RX,
645 sender, flags, buf, size, sent_cb);
646 if (ret) {
647 return ret;
648 }
649
Jan Kiszka067404b2013-08-02 21:47:08 +0200650 queue = sender->peer->incoming_queue;
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100651
Mark McLoughlinca77d172009-10-22 17:43:41 +0100652 return qemu_net_queue_send(queue, sender, flags, buf, size, sent_cb);
653}
654
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100655ssize_t qemu_send_packet_async(NetClientState *sender,
Mark McLoughlinca77d172009-10-22 17:43:41 +0100656 const uint8_t *buf, int size,
657 NetPacketSent *sent_cb)
658{
659 return qemu_send_packet_async_with_flags(sender, QEMU_NET_PACKET_FLAG_NONE,
660 buf, size, sent_cb);
Mark McLoughlinf3b6c7f2009-04-29 12:15:26 +0100661}
662
Marc-André Lureau625a5262019-01-17 15:43:54 +0400663ssize_t qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size)
Mark McLoughlinf3b6c7f2009-04-29 12:15:26 +0100664{
Marc-André Lureau625a5262019-01-17 15:43:54 +0400665 return qemu_send_packet_async(nc, buf, size, NULL);
aliguori63a01ef2008-10-31 19:10:00 +0000666}
667
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100668ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size)
Mark McLoughlinca77d172009-10-22 17:43:41 +0100669{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100670 return qemu_send_packet_async_with_flags(nc, QEMU_NET_PACKET_FLAG_RAW,
Mark McLoughlinca77d172009-10-22 17:43:41 +0100671 buf, size, NULL);
672}
673
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100674static ssize_t nc_sendv_compat(NetClientState *nc, const struct iovec *iov,
Yang Hongyangfefe2a72015-10-07 11:52:16 +0800675 int iovcnt, unsigned flags)
aliguorifbe78f42008-12-17 19:13:11 +0000676{
Pooja Dhannawat74044c82016-03-28 18:04:11 +0530677 uint8_t *buf = NULL;
Yang Hongyangfefe2a72015-10-07 11:52:16 +0800678 uint8_t *buffer;
Benjamin Poirierce053662011-02-23 19:57:21 -0500679 size_t offset;
Pooja Dhannawat74044c82016-03-28 18:04:11 +0530680 ssize_t ret;
aliguorifbe78f42008-12-17 19:13:11 +0000681
Yang Hongyangfefe2a72015-10-07 11:52:16 +0800682 if (iovcnt == 1) {
683 buffer = iov[0].iov_base;
684 offset = iov[0].iov_len;
685 } else {
Peter Lieven47f9f152016-06-30 11:49:40 +0200686 offset = iov_size(iov, iovcnt);
687 if (offset > NET_BUFSIZE) {
688 return -1;
689 }
690 buf = g_malloc(offset);
Yang Hongyangfefe2a72015-10-07 11:52:16 +0800691 buffer = buf;
Peter Lieven47f9f152016-06-30 11:49:40 +0200692 offset = iov_to_buf(iov, iovcnt, 0, buf, offset);
Yang Hongyangfefe2a72015-10-07 11:52:16 +0800693 }
aliguorifbe78f42008-12-17 19:13:11 +0000694
Yang Hongyangfefe2a72015-10-07 11:52:16 +0800695 if (flags & QEMU_NET_PACKET_FLAG_RAW && nc->info->receive_raw) {
Pooja Dhannawat74044c82016-03-28 18:04:11 +0530696 ret = nc->info->receive_raw(nc, buffer, offset);
Yang Hongyangfefe2a72015-10-07 11:52:16 +0800697 } else {
Pooja Dhannawat74044c82016-03-28 18:04:11 +0530698 ret = nc->info->receive(nc, buffer, offset);
Yang Hongyangfefe2a72015-10-07 11:52:16 +0800699 }
Pooja Dhannawat74044c82016-03-28 18:04:11 +0530700
701 g_free(buf);
702 return ret;
aliguorifbe78f42008-12-17 19:13:11 +0000703}
704
Jason Wang25c01bd2018-12-04 11:53:43 +0800705static ssize_t qemu_deliver_packet_iov(NetClientState *sender,
706 unsigned flags,
707 const struct iovec *iov,
708 int iovcnt,
709 void *opaque)
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100710{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100711 NetClientState *nc = opaque;
Stefan Hajnoczic67f5dc2012-08-17 21:16:42 +0100712 int ret;
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100713
Jason Wang1592a992018-05-30 13:16:36 +0800714
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100715 if (nc->link_down) {
Jason Wang25c01bd2018-12-04 11:53:43 +0800716 return iov_size(iov, iovcnt);
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100717 }
718
Stefan Hajnoczic67f5dc2012-08-17 21:16:42 +0100719 if (nc->receive_disabled) {
720 return 0;
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100721 }
Stefan Hajnoczic67f5dc2012-08-17 21:16:42 +0100722
Peter Lievenca1ee3d2016-06-09 11:39:27 +0200723 if (nc->info->receive_iov && !(flags & QEMU_NET_PACKET_FLAG_RAW)) {
Stefan Hajnoczic67f5dc2012-08-17 21:16:42 +0100724 ret = nc->info->receive_iov(nc, iov, iovcnt);
725 } else {
Yang Hongyangfefe2a72015-10-07 11:52:16 +0800726 ret = nc_sendv_compat(nc, iov, iovcnt, flags);
Stefan Hajnoczic67f5dc2012-08-17 21:16:42 +0100727 }
728
729 if (ret == 0) {
730 nc->receive_disabled = 1;
731 }
732
733 return ret;
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100734}
735
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100736ssize_t qemu_sendv_packet_async(NetClientState *sender,
Mark McLoughlinf3b6c7f2009-04-29 12:15:26 +0100737 const struct iovec *iov, int iovcnt,
738 NetPacketSent *sent_cb)
aliguorifbe78f42008-12-17 19:13:11 +0000739{
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100740 NetQueue *queue;
Jason Wang25c01bd2018-12-04 11:53:43 +0800741 size_t size = iov_size(iov, iovcnt);
Yang Hongyange64c7702015-10-07 11:52:15 +0800742 int ret;
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100743
Jason Wang25c01bd2018-12-04 11:53:43 +0800744 if (size > NET_BUFSIZE) {
745 return size;
746 }
747
Stefan Hajnoczia005d072012-07-24 16:35:11 +0100748 if (sender->link_down || !sender->peer) {
Jason Wang25c01bd2018-12-04 11:53:43 +0800749 return size;
aliguorifbe78f42008-12-17 19:13:11 +0000750 }
751
Yang Hongyange64c7702015-10-07 11:52:15 +0800752 /* Let filters handle the packet first */
753 ret = filter_receive_iov(sender, NET_FILTER_DIRECTION_TX, sender,
754 QEMU_NET_PACKET_FLAG_NONE, iov, iovcnt, sent_cb);
755 if (ret) {
756 return ret;
757 }
758
759 ret = filter_receive_iov(sender->peer, NET_FILTER_DIRECTION_RX, sender,
760 QEMU_NET_PACKET_FLAG_NONE, iov, iovcnt, sent_cb);
761 if (ret) {
762 return ret;
763 }
764
Jan Kiszka067404b2013-08-02 21:47:08 +0200765 queue = sender->peer->incoming_queue;
Mark McLoughlin9a6ecb32009-10-08 19:58:32 +0100766
Mark McLoughlinc0b8e492009-10-22 17:43:40 +0100767 return qemu_net_queue_send_iov(queue, sender,
768 QEMU_NET_PACKET_FLAG_NONE,
769 iov, iovcnt, sent_cb);
aliguorifbe78f42008-12-17 19:13:11 +0000770}
771
Mark McLoughlinf3b6c7f2009-04-29 12:15:26 +0100772ssize_t
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100773qemu_sendv_packet(NetClientState *nc, const struct iovec *iov, int iovcnt)
Mark McLoughlinf3b6c7f2009-04-29 12:15:26 +0100774{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100775 return qemu_sendv_packet_async(nc, iov, iovcnt, NULL);
Mark McLoughlinf3b6c7f2009-04-29 12:15:26 +0100776}
777
Stefan Hajnoczi4e68f7a2012-07-24 16:35:13 +0100778NetClientState *qemu_find_netdev(const char *id)
aliguori63a01ef2008-10-31 19:10:00 +0000779{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100780 NetClientState *nc;
Mark McLoughlin5610c3a2009-10-08 19:58:23 +0100781
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100782 QTAILQ_FOREACH(nc, &net_clients, next) {
Eric Blakef394b2e2016-07-13 21:50:23 -0600783 if (nc->info->type == NET_CLIENT_DRIVER_NIC)
Markus Armbruster85dde9a2011-06-16 18:45:37 +0200784 continue;
Stefan Hajnoczi35277d12012-07-24 16:35:14 +0100785 if (!strcmp(nc->name, id)) {
786 return nc;
Mark McLoughlin5869c4d2009-10-08 19:58:29 +0100787 }
788 }
789
790 return NULL;
791}
792
Jason Wang6c51ae72013-01-30 19:12:25 +0800793int qemu_find_net_clients_except(const char *id, NetClientState **ncs,
Eric Blakef394b2e2016-07-13 21:50:23 -0600794 NetClientDriver type, int max)
Jason Wang6c51ae72013-01-30 19:12:25 +0800795{
796 NetClientState *nc;
797 int ret = 0;
798
799 QTAILQ_FOREACH(nc, &net_clients, next) {
800 if (nc->info->type == type) {
801 continue;
802 }
Hani Benhabiles40d19392014-05-07 23:41:30 +0100803 if (!id || !strcmp(nc->name, id)) {
Jason Wang6c51ae72013-01-30 19:12:25 +0800804 if (ret < max) {
805 ncs[ret] = nc;
806 }
807 ret++;
808 }
809 }
810
811 return ret;
812}
813
aliguori76970792009-02-11 15:20:03 +0000814static int nic_get_free_idx(void)
815{
816 int index;
817
818 for (index = 0; index < MAX_NICS; index++)
819 if (!nd_table[index].used)
820 return index;
821 return -1;
822}
823
Markus Armbruster07caea32009-09-25 03:53:51 +0200824int qemu_show_nic_models(const char *arg, const char *const *models)
825{
826 int i;
827
Peter Maydellc8057f92012-08-02 13:45:54 +0100828 if (!arg || !is_help_option(arg)) {
Markus Armbruster07caea32009-09-25 03:53:51 +0200829 return 0;
Peter Maydellc8057f92012-08-02 13:45:54 +0100830 }
Markus Armbruster07caea32009-09-25 03:53:51 +0200831
Thomas Huth7b71e032019-04-23 18:06:08 +0200832 printf("Supported NIC models:\n");
833 for (i = 0 ; models[i]; i++) {
834 printf("%s\n", models[i]);
835 }
Markus Armbruster07caea32009-09-25 03:53:51 +0200836 return 1;
837}
838
aliguorid07f22c2009-01-13 19:03:57 +0000839void qemu_check_nic_model(NICInfo *nd, const char *model)
840{
841 const char *models[2];
842
843 models[0] = model;
844 models[1] = NULL;
845
Markus Armbruster07caea32009-09-25 03:53:51 +0200846 if (qemu_show_nic_models(nd->model, models))
847 exit(0);
848 if (qemu_find_nic_model(nd, models, model) < 0)
849 exit(1);
aliguorid07f22c2009-01-13 19:03:57 +0000850}
851
Markus Armbruster07caea32009-09-25 03:53:51 +0200852int qemu_find_nic_model(NICInfo *nd, const char * const *models,
853 const char *default_model)
aliguorid07f22c2009-01-13 19:03:57 +0000854{
Markus Armbruster07caea32009-09-25 03:53:51 +0200855 int i;
aliguorid07f22c2009-01-13 19:03:57 +0000856
857 if (!nd->model)
Anthony Liguori7267c092011-08-20 22:09:37 -0500858 nd->model = g_strdup(default_model);
aliguorid07f22c2009-01-13 19:03:57 +0000859
Markus Armbruster07caea32009-09-25 03:53:51 +0200860 for (i = 0 ; models[i]; i++) {
861 if (strcmp(nd->model, models[i]) == 0)
862 return i;
aliguorid07f22c2009-01-13 19:03:57 +0000863 }
864
Markus Armbruster6daf1942011-06-22 14:03:54 +0200865 error_report("Unsupported NIC model: %s", nd->model);
Markus Armbruster07caea32009-09-25 03:53:51 +0200866 return -1;
aliguorid07f22c2009-01-13 19:03:57 +0000867}
868
Kővágó, Zoltáncebea512016-07-13 21:50:12 -0600869static int net_init_nic(const Netdev *netdev, const char *name,
Markus Armbrustera30ecde2015-05-15 13:58:50 +0200870 NetClientState *peer, Error **errp)
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100871{
872 int idx;
873 NICInfo *nd;
Laszlo Ersek2456f362012-07-17 16:17:14 +0200874 const NetLegacyNicOptions *nic;
875
Eric Blakef394b2e2016-07-13 21:50:23 -0600876 assert(netdev->type == NET_CLIENT_DRIVER_NIC);
877 nic = &netdev->u.nic;
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100878
879 idx = nic_get_free_idx();
880 if (idx == -1 || nb_nics >= MAX_NICS) {
Markus Armbruster66308862015-05-15 13:58:51 +0200881 error_setg(errp, "too many NICs");
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100882 return -1;
883 }
884
885 nd = &nd_table[idx];
886
887 memset(nd, 0, sizeof(*nd));
888
Laszlo Ersek2456f362012-07-17 16:17:14 +0200889 if (nic->has_netdev) {
890 nd->netdev = qemu_find_netdev(nic->netdev);
Mark McLoughlin5869c4d2009-10-08 19:58:29 +0100891 if (!nd->netdev) {
Markus Armbruster66308862015-05-15 13:58:51 +0200892 error_setg(errp, "netdev '%s' not found", nic->netdev);
Mark McLoughlin5869c4d2009-10-08 19:58:29 +0100893 return -1;
894 }
895 } else {
Stefan Hajnoczid33d93b2012-07-24 16:35:05 +0100896 assert(peer);
897 nd->netdev = peer;
Mark McLoughlin5869c4d2009-10-08 19:58:29 +0100898 }
Markus Armbrusterc64f50d2013-01-22 11:07:57 +0100899 nd->name = g_strdup(name);
Laszlo Ersek2456f362012-07-17 16:17:14 +0200900 if (nic->has_model) {
901 nd->model = g_strdup(nic->model);
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100902 }
Laszlo Ersek2456f362012-07-17 16:17:14 +0200903 if (nic->has_addr) {
904 nd->devaddr = g_strdup(nic->addr);
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100905 }
906
Laszlo Ersek2456f362012-07-17 16:17:14 +0200907 if (nic->has_macaddr &&
908 net_parse_macaddr(nd->macaddr.a, nic->macaddr) < 0) {
Markus Armbruster66308862015-05-15 13:58:51 +0200909 error_setg(errp, "invalid syntax for ethernet address");
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100910 return -1;
911 }
Dmitry Krivenokd60b20c2013-10-21 12:08:44 +0400912 if (nic->has_macaddr &&
913 is_multicast_ether_addr(nd->macaddr.a)) {
Markus Armbruster66308862015-05-15 13:58:51 +0200914 error_setg(errp,
915 "NIC cannot have multicast MAC address (odd 1st byte)");
Dmitry Krivenokd60b20c2013-10-21 12:08:44 +0400916 return -1;
917 }
Jan Kiszka6eed1852011-07-20 12:20:22 +0200918 qemu_macaddr_default_if_unset(&nd->macaddr);
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100919
Laszlo Ersek2456f362012-07-17 16:17:14 +0200920 if (nic->has_vectors) {
921 if (nic->vectors > 0x7ffffff) {
Markus Armbruster66308862015-05-15 13:58:51 +0200922 error_setg(errp, "invalid # of vectors: %"PRIu32, nic->vectors);
Laszlo Ersek2456f362012-07-17 16:17:14 +0200923 return -1;
924 }
925 nd->nvectors = nic->vectors;
926 } else {
927 nd->nvectors = DEV_NVECTORS_UNSPECIFIED;
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100928 }
929
930 nd->used = 1;
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100931 nb_nics++;
932
933 return idx;
934}
935
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100936
Eric Blakef394b2e2016-07-13 21:50:23 -0600937static int (* const net_client_init_fun[NET_CLIENT_DRIVER__MAX])(
Kővágó, Zoltáncebea512016-07-13 21:50:12 -0600938 const Netdev *netdev,
Laszlo Ersek6687b792012-07-17 16:17:13 +0200939 const char *name,
Markus Armbrustera30ecde2015-05-15 13:58:50 +0200940 NetClientState *peer, Error **errp) = {
Eric Blakef394b2e2016-07-13 21:50:23 -0600941 [NET_CLIENT_DRIVER_NIC] = net_init_nic,
Mark McLoughlinec302ff2009-10-06 12:17:07 +0100942#ifdef CONFIG_SLIRP
Eric Blakef394b2e2016-07-13 21:50:23 -0600943 [NET_CLIENT_DRIVER_USER] = net_init_slirp,
Mark McLoughlinec302ff2009-10-06 12:17:07 +0100944#endif
Eric Blakef394b2e2016-07-13 21:50:23 -0600945 [NET_CLIENT_DRIVER_TAP] = net_init_tap,
946 [NET_CLIENT_DRIVER_SOCKET] = net_init_socket,
Mark McLoughlindd510582009-10-06 12:17:10 +0100947#ifdef CONFIG_VDE
Eric Blakef394b2e2016-07-13 21:50:23 -0600948 [NET_CLIENT_DRIVER_VDE] = net_init_vde,
Mark McLoughlindd510582009-10-06 12:17:10 +0100949#endif
Vincenzo Maffione58952132013-11-06 11:44:06 +0100950#ifdef CONFIG_NETMAP
Eric Blakef394b2e2016-07-13 21:50:23 -0600951 [NET_CLIENT_DRIVER_NETMAP] = net_init_netmap,
Vincenzo Maffione58952132013-11-06 11:44:06 +0100952#endif
Stefan Weil2944e4e2012-02-04 09:24:46 +0100953#ifdef CONFIG_NET_BRIDGE
Eric Blakef394b2e2016-07-13 21:50:23 -0600954 [NET_CLIENT_DRIVER_BRIDGE] = net_init_bridge,
Laszlo Ersek6687b792012-07-17 16:17:13 +0200955#endif
Eric Blakef394b2e2016-07-13 21:50:23 -0600956 [NET_CLIENT_DRIVER_HUBPORT] = net_init_hubport,
Paolo Bonzini56f41de2019-02-14 18:35:49 +0100957#ifdef CONFIG_VHOST_NET_USER
Eric Blakef394b2e2016-07-13 21:50:23 -0600958 [NET_CLIENT_DRIVER_VHOST_USER] = net_init_vhost_user,
Nikolay Nikolaev03ce5742014-06-10 13:02:16 +0300959#endif
Gonglei015a33b2014-07-01 20:58:08 +0800960#ifdef CONFIG_L2TPV3
Eric Blakef394b2e2016-07-13 21:50:23 -0600961 [NET_CLIENT_DRIVER_L2TPV3] = net_init_l2tpv3,
Anton Ivanov3fb69aa2014-06-20 10:34:41 +0100962#endif
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100963};
964
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100965
Eric Blake0e55c382016-07-13 21:50:24 -0600966static int net_client_init1(const void *object, bool is_netdev, Error **errp)
Laszlo Ersek6687b792012-07-17 16:17:13 +0200967{
Kővágó, Zoltáncebea512016-07-13 21:50:12 -0600968 Netdev legacy = {0};
969 const Netdev *netdev;
Laszlo Ersek6687b792012-07-17 16:17:13 +0200970 const char *name;
Stefan Hajnoczi4ef0def2015-05-27 17:16:51 +0100971 NetClientState *peer = NULL;
Mark McLoughlinf83c6e12009-10-06 12:17:06 +0100972
Markus Armbruster5294e2c2010-03-25 17:22:38 +0100973 if (is_netdev) {
Kővágó, Zoltáncebea512016-07-13 21:50:12 -0600974 netdev = object;
Stefan Hajnoczi1e81aba2015-05-27 17:16:52 +0100975 name = netdev->id;
Laszlo Ersek6687b792012-07-17 16:17:13 +0200976
Thomas Huth857d2082018-02-21 11:18:34 +0100977 if (netdev->type == NET_CLIENT_DRIVER_NIC ||
Eric Blakef394b2e2016-07-13 21:50:23 -0600978 !net_client_init_fun[netdev->type]) {
Markus Armbrusterc6bd8c72015-03-17 11:54:50 +0100979 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "type",
980 "a netdev backend type");
Mark McLoughlinf6b134a2009-10-08 19:58:27 +0100981 return -1;
982 }
Laszlo Ersek6687b792012-07-17 16:17:13 +0200983 } else {
Stefan Hajnoczi1e81aba2015-05-27 17:16:52 +0100984 const NetLegacy *net = object;
Eric Blakef394b2e2016-07-13 21:50:23 -0600985 const NetLegacyOptions *opts = net->opts;
Kővágó, Zoltáncebea512016-07-13 21:50:12 -0600986 legacy.id = net->id;
Kővágó, Zoltáncebea512016-07-13 21:50:12 -0600987 netdev = &legacy;
Stefan Hajnoczi1e81aba2015-05-27 17:16:52 +0100988 /* missing optional values have been initialized to "all bits zero" */
989 name = net->has_id ? net->id : net->name;
990
Thomas Huth101625a2018-09-20 10:14:08 +0200991 if (net->has_name) {
992 warn_report("The 'name' parameter is deprecated, use 'id' instead");
993 }
994
Eric Blakef394b2e2016-07-13 21:50:23 -0600995 /* Map the old options to the new flat type */
996 switch (opts->type) {
Markus Armbrusterd3be4b52017-02-21 21:46:27 +0100997 case NET_LEGACY_OPTIONS_TYPE_NONE:
Stefan Hajnoczi1e81aba2015-05-27 17:16:52 +0100998 return 0; /* nothing to do */
Markus Armbrusterd3be4b52017-02-21 21:46:27 +0100999 case NET_LEGACY_OPTIONS_TYPE_NIC:
Eric Blakef394b2e2016-07-13 21:50:23 -06001000 legacy.type = NET_CLIENT_DRIVER_NIC;
Markus Armbrusterd3be4b52017-02-21 21:46:27 +01001001 legacy.u.nic = opts->u.nic;
Eric Blakef394b2e2016-07-13 21:50:23 -06001002 break;
Markus Armbrusterd3be4b52017-02-21 21:46:27 +01001003 case NET_LEGACY_OPTIONS_TYPE_USER:
Eric Blakef394b2e2016-07-13 21:50:23 -06001004 legacy.type = NET_CLIENT_DRIVER_USER;
Markus Armbrusterd3be4b52017-02-21 21:46:27 +01001005 legacy.u.user = opts->u.user;
Eric Blakef394b2e2016-07-13 21:50:23 -06001006 break;
Markus Armbrusterd3be4b52017-02-21 21:46:27 +01001007 case NET_LEGACY_OPTIONS_TYPE_TAP:
Eric Blakef394b2e2016-07-13 21:50:23 -06001008 legacy.type = NET_CLIENT_DRIVER_TAP;
Markus Armbrusterd3be4b52017-02-21 21:46:27 +01001009 legacy.u.tap = opts->u.tap;
Eric Blakef394b2e2016-07-13 21:50:23 -06001010 break;
Markus Armbrusterd3be4b52017-02-21 21:46:27 +01001011 case NET_LEGACY_OPTIONS_TYPE_L2TPV3:
Eric Blakef394b2e2016-07-13 21:50:23 -06001012 legacy.type = NET_CLIENT_DRIVER_L2TPV3;
Markus Armbrusterd3be4b52017-02-21 21:46:27 +01001013 legacy.u.l2tpv3 = opts->u.l2tpv3;
Eric Blakef394b2e2016-07-13 21:50:23 -06001014 break;
Markus Armbrusterd3be4b52017-02-21 21:46:27 +01001015 case NET_LEGACY_OPTIONS_TYPE_SOCKET:
Eric Blakef394b2e2016-07-13 21:50:23 -06001016 legacy.type = NET_CLIENT_DRIVER_SOCKET;
Markus Armbrusterd3be4b52017-02-21 21:46:27 +01001017 legacy.u.socket = opts->u.socket;
Eric Blakef394b2e2016-07-13 21:50:23 -06001018 break;
Markus Armbrusterd3be4b52017-02-21 21:46:27 +01001019 case NET_LEGACY_OPTIONS_TYPE_VDE:
Eric Blakef394b2e2016-07-13 21:50:23 -06001020 legacy.type = NET_CLIENT_DRIVER_VDE;
Markus Armbrusterd3be4b52017-02-21 21:46:27 +01001021 legacy.u.vde = opts->u.vde;
Eric Blakef394b2e2016-07-13 21:50:23 -06001022 break;
Markus Armbrusterd3be4b52017-02-21 21:46:27 +01001023 case NET_LEGACY_OPTIONS_TYPE_BRIDGE:
Eric Blakef394b2e2016-07-13 21:50:23 -06001024 legacy.type = NET_CLIENT_DRIVER_BRIDGE;
Markus Armbrusterd3be4b52017-02-21 21:46:27 +01001025 legacy.u.bridge = opts->u.bridge;
Eric Blakef394b2e2016-07-13 21:50:23 -06001026 break;
Markus Armbrusterd3be4b52017-02-21 21:46:27 +01001027 case NET_LEGACY_OPTIONS_TYPE_NETMAP:
Eric Blakef394b2e2016-07-13 21:50:23 -06001028 legacy.type = NET_CLIENT_DRIVER_NETMAP;
Markus Armbrusterd3be4b52017-02-21 21:46:27 +01001029 legacy.u.netmap = opts->u.netmap;
Eric Blakef394b2e2016-07-13 21:50:23 -06001030 break;
Markus Armbrusterd3be4b52017-02-21 21:46:27 +01001031 case NET_LEGACY_OPTIONS_TYPE_VHOST_USER:
Eric Blakef394b2e2016-07-13 21:50:23 -06001032 legacy.type = NET_CLIENT_DRIVER_VHOST_USER;
Markus Armbrusterd3be4b52017-02-21 21:46:27 +01001033 legacy.u.vhost_user = opts->u.vhost_user;
Eric Blakef394b2e2016-07-13 21:50:23 -06001034 break;
1035 default:
1036 abort();
Markus Armbrusterca7eb182015-05-15 13:58:49 +02001037 }
Stefan Hajnoczid139e9a2015-05-27 17:16:50 +01001038
Eric Blakef394b2e2016-07-13 21:50:23 -06001039 if (!net_client_init_fun[netdev->type]) {
Stefan Hajnoczid139e9a2015-05-27 17:16:50 +01001040 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "type",
1041 "a net backend type (maybe it is not compiled "
1042 "into this binary)");
1043 return -1;
1044 }
Mark McLoughlinf6b134a2009-10-08 19:58:27 +01001045
Thomas Huthaf1a5c32018-04-30 20:02:23 +02001046 /* Do not add to a hub if it's a nic with a netdev= parameter. */
Eric Blakef394b2e2016-07-13 21:50:23 -06001047 if (netdev->type != NET_CLIENT_DRIVER_NIC ||
Markus Armbrusterd3be4b52017-02-21 21:46:27 +01001048 !opts->u.nic.has_netdev) {
Thomas Huthaf1a5c32018-04-30 20:02:23 +02001049 peer = net_hub_add_port(0, NULL, NULL);
Thomas Hutha2dbe132017-01-24 10:42:49 +01001050 }
Stefan Hajnoczi4ef0def2015-05-27 17:16:51 +01001051 }
Laszlo Ersek6687b792012-07-17 16:17:13 +02001052
Eric Blakef394b2e2016-07-13 21:50:23 -06001053 if (net_client_init_fun[netdev->type](netdev, name, peer, errp) < 0) {
Stefan Hajnoczi4ef0def2015-05-27 17:16:51 +01001054 /* FIXME drop when all init functions store an Error */
1055 if (errp && !*errp) {
1056 error_setg(errp, QERR_DEVICE_INIT_FAILED,
Markus Armbruster977c7362017-08-24 10:46:08 +02001057 NetClientDriver_str(netdev->type));
Mark McLoughlinf6b134a2009-10-08 19:58:27 +01001058 }
Stefan Hajnoczi4ef0def2015-05-27 17:16:51 +01001059 return -1;
Mark McLoughlinf6b134a2009-10-08 19:58:27 +01001060 }
Laszlo Ersek6687b792012-07-17 16:17:13 +02001061 return 0;
Mark McLoughlinf83c6e12009-10-06 12:17:06 +01001062}
1063
Thomas Huth547203e2018-02-21 11:18:31 +01001064static void show_netdevs(void)
1065{
1066 int idx;
1067 const char *available_netdevs[] = {
1068 "socket",
1069 "hubport",
1070 "tap",
1071#ifdef CONFIG_SLIRP
1072 "user",
1073#endif
1074#ifdef CONFIG_L2TPV3
1075 "l2tpv3",
1076#endif
1077#ifdef CONFIG_VDE
1078 "vde",
1079#endif
1080#ifdef CONFIG_NET_BRIDGE
1081 "bridge",
1082#endif
1083#ifdef CONFIG_NETMAP
1084 "netmap",
1085#endif
1086#ifdef CONFIG_POSIX
1087 "vhost-user",
1088#endif
1089 };
Laszlo Ersek6687b792012-07-17 16:17:13 +02001090
Thomas Huth547203e2018-02-21 11:18:31 +01001091 printf("Available netdev backend types:\n");
1092 for (idx = 0; idx < ARRAY_SIZE(available_netdevs); idx++) {
1093 puts(available_netdevs[idx]);
1094 }
1095}
Laszlo Ersek6687b792012-07-17 16:17:13 +02001096
Thomas Huthaa09a482018-02-21 11:18:33 +01001097static int net_client_init(QemuOpts *opts, bool is_netdev, Error **errp)
Laszlo Ersek6687b792012-07-17 16:17:13 +02001098{
Stefano Garzarellac1112b22019-05-17 15:47:46 +02001099 gchar **substrings = NULL;
Laszlo Ersek6687b792012-07-17 16:17:13 +02001100 void *object = NULL;
1101 Error *err = NULL;
1102 int ret = -1;
Eric Blake09204ea2016-06-09 10:48:36 -06001103 Visitor *v = opts_visitor_new(opts);
Laszlo Ersek6687b792012-07-17 16:17:13 +02001104
Lin Ma8b43f962018-06-11 17:23:05 +08001105 const char *type = qemu_opt_get(opts, "type");
1106
1107 if (is_netdev && type && is_help_option(type)) {
Thomas Huth547203e2018-02-21 11:18:31 +01001108 show_netdevs();
1109 exit(0);
1110 } else {
Yann Bordenave7aac5312016-03-15 10:31:22 +01001111 /* Parse convenience option format ip6-net=fec0::0[/64] */
Samuel Thibault891a2bb2016-03-31 00:52:50 +02001112 const char *ip6_net = qemu_opt_get(opts, "ipv6-net");
Yann Bordenave7aac5312016-03-15 10:31:22 +01001113
1114 if (ip6_net) {
Stefano Garzarellac1112b22019-05-17 15:47:46 +02001115 char *prefix_addr;
1116 unsigned long prefix_len = 64; /* Default 64bit prefix length. */
Yann Bordenave7aac5312016-03-15 10:31:22 +01001117
Stefano Garzarellac1112b22019-05-17 15:47:46 +02001118 substrings = g_strsplit(ip6_net, "/", 2);
1119 if (!substrings || !substrings[0]) {
1120 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "ipv6-net",
1121 "a valid IPv6 prefix");
1122 goto out;
1123 }
1124
1125 prefix_addr = substrings[0];
1126
1127 if (substrings[1]) {
Yann Bordenave7aac5312016-03-15 10:31:22 +01001128 /* User-specified prefix length. */
Yann Bordenave7aac5312016-03-15 10:31:22 +01001129 int err;
1130
Stefano Garzarellac1112b22019-05-17 15:47:46 +02001131 err = qemu_strtoul(substrings[1], NULL, 10, &prefix_len);
Yann Bordenave7aac5312016-03-15 10:31:22 +01001132 if (err) {
1133 error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
Stefano Garzarella21c520d2019-05-17 15:47:45 +02001134 "ipv6-prefixlen", "a number");
1135 goto out;
Yann Bordenave7aac5312016-03-15 10:31:22 +01001136 }
1137 }
Stefano Garzarellac1112b22019-05-17 15:47:46 +02001138
1139 qemu_opt_set(opts, "ipv6-prefix", prefix_addr, &error_abort);
1140 qemu_opt_set_number(opts, "ipv6-prefixlen", prefix_len,
1141 &error_abort);
Samuel Thibault891a2bb2016-03-31 00:52:50 +02001142 qemu_opt_unset(opts, "ipv6-net");
Yann Bordenave7aac5312016-03-15 10:31:22 +01001143 }
1144 }
1145
Eric Blake96a16162016-02-23 14:14:33 -07001146 if (is_netdev) {
1147 visit_type_Netdev(v, NULL, (Netdev **)&object, &err);
1148 } else {
1149 visit_type_NetLegacy(v, NULL, (NetLegacy **)&object, &err);
Laszlo Ersek6687b792012-07-17 16:17:13 +02001150 }
1151
1152 if (!err) {
Laszlo Ersek1a0c0952012-07-17 16:17:21 +02001153 ret = net_client_init1(object, is_netdev, &err);
Laszlo Ersek6687b792012-07-17 16:17:13 +02001154 }
1155
Eric Blake96a16162016-02-23 14:14:33 -07001156 if (is_netdev) {
1157 qapi_free_Netdev(object);
1158 } else {
1159 qapi_free_NetLegacy(object);
Laszlo Ersek6687b792012-07-17 16:17:13 +02001160 }
1161
Stefano Garzarella21c520d2019-05-17 15:47:45 +02001162out:
Laszlo Ersek6687b792012-07-17 16:17:13 +02001163 error_propagate(errp, err);
Stefano Garzarellac1112b22019-05-17 15:47:46 +02001164 g_strfreev(substrings);
Eric Blake09204ea2016-06-09 10:48:36 -06001165 visit_free(v);
Laszlo Ersek6687b792012-07-17 16:17:13 +02001166 return ret;
1167}
1168
Luiz Capitulino928059a2012-04-18 17:34:15 -03001169void netdev_add(QemuOpts *opts, Error **errp)
1170{
Eric Blake0e55c382016-07-13 21:50:24 -06001171 net_client_init(opts, true, errp);
Luiz Capitulino928059a2012-04-18 17:34:15 -03001172}
1173
Markus Armbruster485febc2015-03-13 17:25:50 +01001174void qmp_netdev_add(QDict *qdict, QObject **ret, Error **errp)
Markus Armbrusterae82d322010-03-25 17:22:40 +01001175{
Luiz Capitulino4e899782012-04-18 17:24:01 -03001176 Error *local_err = NULL;
Luiz Capitulino928059a2012-04-18 17:34:15 -03001177 QemuOptsList *opts_list;
Markus Armbrusterae82d322010-03-25 17:22:40 +01001178 QemuOpts *opts;
Markus Armbrusterae82d322010-03-25 17:22:40 +01001179
Luiz Capitulino928059a2012-04-18 17:34:15 -03001180 opts_list = qemu_find_opts_err("netdev", &local_err);
Markus Armbruster84d18f02014-01-30 15:07:28 +01001181 if (local_err) {
Markus Armbruster485febc2015-03-13 17:25:50 +01001182 goto out;
Markus Armbrusterae82d322010-03-25 17:22:40 +01001183 }
1184
Luiz Capitulino928059a2012-04-18 17:34:15 -03001185 opts = qemu_opts_from_qdict(opts_list, qdict, &local_err);
Markus Armbruster84d18f02014-01-30 15:07:28 +01001186 if (local_err) {
Markus Armbruster485febc2015-03-13 17:25:50 +01001187 goto out;
Luiz Capitulino928059a2012-04-18 17:34:15 -03001188 }
1189
1190 netdev_add(opts, &local_err);
Markus Armbruster84d18f02014-01-30 15:07:28 +01001191 if (local_err) {
Yoshiaki Tamura410cbaf2010-06-21 10:41:36 +09001192 qemu_opts_del(opts);
Markus Armbruster485febc2015-03-13 17:25:50 +01001193 goto out;
Yoshiaki Tamura410cbaf2010-06-21 10:41:36 +09001194 }
1195
Markus Armbruster485febc2015-03-13 17:25:50 +01001196out:
1197 error_propagate(errp, local_err);
Markus Armbrusterae82d322010-03-25 17:22:40 +01001198}
1199
Luiz Capitulino5f964152012-04-16 14:36:32 -03001200void qmp_netdev_del(const char *id, Error **errp)
Markus Armbrusterae82d322010-03-25 17:22:40 +01001201{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +01001202 NetClientState *nc;
Stefan Hajnoczi645c9492012-10-24 14:34:12 +02001203 QemuOpts *opts;
Markus Armbrusterae82d322010-03-25 17:22:40 +01001204
Stefan Hajnoczi35277d12012-07-24 16:35:14 +01001205 nc = qemu_find_netdev(id);
1206 if (!nc) {
Markus Armbruster75158eb2015-03-16 08:57:47 +01001207 error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
1208 "Device '%s' not found", id);
Luiz Capitulino5f964152012-04-16 14:36:32 -03001209 return;
Markus Armbrusterae82d322010-03-25 17:22:40 +01001210 }
Luiz Capitulino5f964152012-04-16 14:36:32 -03001211
Stefan Hajnoczi645c9492012-10-24 14:34:12 +02001212 opts = qemu_opts_find(qemu_find_opts_err("netdev", NULL), id);
1213 if (!opts) {
1214 error_setg(errp, "Device '%s' is not a netdev", id);
1215 return;
1216 }
1217
Stefan Hajnoczib20c6b92012-07-24 16:35:15 +01001218 qemu_del_net_client(nc);
Stefan Hajnoczi645c9492012-10-24 14:34:12 +02001219 qemu_opts_del(opts);
Markus Armbrusterae82d322010-03-25 17:22:40 +01001220}
1221
zhanghailiangaa9156f2016-01-26 14:43:33 +08001222static void netfilter_print_info(Monitor *mon, NetFilterState *nf)
1223{
1224 char *str;
1225 ObjectProperty *prop;
1226 ObjectPropertyIterator iter;
Eric Blake3b098d52016-06-09 10:48:43 -06001227 Visitor *v;
zhanghailiangaa9156f2016-01-26 14:43:33 +08001228
1229 /* generate info str */
1230 object_property_iter_init(&iter, OBJECT(nf));
1231 while ((prop = object_property_iter_next(&iter))) {
1232 if (!strcmp(prop->name, "type")) {
1233 continue;
1234 }
Eric Blake3b098d52016-06-09 10:48:43 -06001235 v = string_output_visitor_new(false, &str);
1236 object_property_get(OBJECT(nf), v, prop->name, NULL);
1237 visit_complete(v, &str);
1238 visit_free(v);
zhanghailiangaa9156f2016-01-26 14:43:33 +08001239 monitor_printf(mon, ",%s=%s", prop->name, str);
1240 g_free(str);
1241 }
1242 monitor_printf(mon, "\n");
1243}
1244
Zhi Yong Wu1a859592012-07-24 16:35:16 +01001245void print_net_client(Monitor *mon, NetClientState *nc)
Jan Kiszka44e798d2011-07-20 12:20:21 +02001246{
Yang Hongyanga4960f52015-10-07 11:52:19 +08001247 NetFilterState *nf;
1248
Jason Wang1ceef9f2013-01-30 19:12:28 +08001249 monitor_printf(mon, "%s: index=%d,type=%s,%s\n", nc->name,
1250 nc->queue_index,
Markus Armbruster977c7362017-08-24 10:46:08 +02001251 NetClientDriver_str(nc->info->type),
Jason Wang1ceef9f2013-01-30 19:12:28 +08001252 nc->info_str);
Yang Hongyanga4960f52015-10-07 11:52:19 +08001253 if (!QTAILQ_EMPTY(&nc->filters)) {
1254 monitor_printf(mon, "filters:\n");
1255 }
1256 QTAILQ_FOREACH(nf, &nc->filters, next) {
Yang Hongyanga3e8a3f2015-10-20 09:51:26 +08001257 char *path = object_get_canonical_path_component(OBJECT(nf));
zhanghailiangaa9156f2016-01-26 14:43:33 +08001258
1259 monitor_printf(mon, " - %s: type=%s", path,
1260 object_get_typename(OBJECT(nf)));
1261 netfilter_print_info(mon, nf);
Yang Hongyanga3e8a3f2015-10-20 09:51:26 +08001262 g_free(path);
Yang Hongyanga4960f52015-10-07 11:52:19 +08001263 }
Jan Kiszka44e798d2011-07-20 12:20:21 +02001264}
1265
Amos Kongb1be4282013-06-14 15:45:52 +08001266RxFilterInfoList *qmp_query_rx_filter(bool has_name, const char *name,
1267 Error **errp)
1268{
1269 NetClientState *nc;
1270 RxFilterInfoList *filter_list = NULL, *last_entry = NULL;
1271
1272 QTAILQ_FOREACH(nc, &net_clients, next) {
1273 RxFilterInfoList *entry;
1274 RxFilterInfo *info;
1275
1276 if (has_name && strcmp(nc->name, name) != 0) {
1277 continue;
1278 }
1279
1280 /* only query rx-filter information of NIC */
Eric Blakef394b2e2016-07-13 21:50:23 -06001281 if (nc->info->type != NET_CLIENT_DRIVER_NIC) {
Amos Kongb1be4282013-06-14 15:45:52 +08001282 if (has_name) {
1283 error_setg(errp, "net client(%s) isn't a NIC", name);
Markus Armbruster9083da12014-04-24 15:44:18 +02001284 return NULL;
Amos Kongb1be4282013-06-14 15:45:52 +08001285 }
1286 continue;
1287 }
1288
Vladislav Yasevich5320c2c2015-10-19 09:04:38 -04001289 /* only query information on queue 0 since the info is per nic,
1290 * not per queue
1291 */
1292 if (nc->queue_index != 0)
1293 continue;
1294
Amos Kongb1be4282013-06-14 15:45:52 +08001295 if (nc->info->query_rx_filter) {
1296 info = nc->info->query_rx_filter(nc);
1297 entry = g_malloc0(sizeof(*entry));
1298 entry->value = info;
1299
1300 if (!filter_list) {
1301 filter_list = entry;
1302 } else {
1303 last_entry->next = entry;
1304 }
1305 last_entry = entry;
1306 } else if (has_name) {
1307 error_setg(errp, "net client(%s) doesn't support"
1308 " rx-filter querying", name);
Markus Armbruster9083da12014-04-24 15:44:18 +02001309 return NULL;
Amos Kongb1be4282013-06-14 15:45:52 +08001310 }
Markus Armbruster638fb142014-04-24 15:44:17 +02001311
1312 if (has_name) {
1313 break;
1314 }
Amos Kongb1be4282013-06-14 15:45:52 +08001315 }
1316
Markus Armbruster9083da12014-04-24 15:44:18 +02001317 if (filter_list == NULL && has_name) {
Amos Kongb1be4282013-06-14 15:45:52 +08001318 error_setg(errp, "invalid net client name: %s", name);
1319 }
1320
1321 return filter_list;
1322}
1323
Markus Armbruster1ce6be22015-02-06 14:18:24 +01001324void hmp_info_network(Monitor *mon, const QDict *qdict)
aliguori63a01ef2008-10-31 19:10:00 +00001325{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +01001326 NetClientState *nc, *peer;
Eric Blakef394b2e2016-07-13 21:50:23 -06001327 NetClientDriver type;
aliguori63a01ef2008-10-31 19:10:00 +00001328
Zhi Yong Wu1a859592012-07-24 16:35:16 +01001329 net_hub_info(mon);
Mark McLoughlin5610c3a2009-10-08 19:58:23 +01001330
Stefan Hajnoczi35277d12012-07-24 16:35:14 +01001331 QTAILQ_FOREACH(nc, &net_clients, next) {
1332 peer = nc->peer;
1333 type = nc->info->type;
Zhi Yong Wu1a859592012-07-24 16:35:16 +01001334
1335 /* Skip if already printed in hub info */
1336 if (net_hub_id_for_client(nc, NULL) == 0) {
1337 continue;
Mark McLoughlin5610c3a2009-10-08 19:58:23 +01001338 }
Zhi Yong Wu1a859592012-07-24 16:35:16 +01001339
Eric Blakef394b2e2016-07-13 21:50:23 -06001340 if (!peer || type == NET_CLIENT_DRIVER_NIC) {
Stefan Hajnoczi35277d12012-07-24 16:35:14 +01001341 print_net_client(mon, nc);
Jan Kiszka19061e62011-07-20 12:20:19 +02001342 } /* else it's a netdev connected to a NIC, printed with the NIC */
Eric Blakef394b2e2016-07-13 21:50:23 -06001343 if (peer && type == NET_CLIENT_DRIVER_NIC) {
Zhi Yong Wu1a859592012-07-24 16:35:16 +01001344 monitor_printf(mon, " \\ ");
Jan Kiszka44e798d2011-07-20 12:20:21 +02001345 print_net_client(mon, peer);
Markus Armbrustera0104e02010-02-11 14:45:01 +01001346 }
Markus Armbrustera0104e02010-02-11 14:45:01 +01001347 }
aliguori63a01ef2008-10-31 19:10:00 +00001348}
1349
Zhang Chen5fbba3d2018-09-03 12:38:56 +08001350void colo_notify_filters_event(int event, Error **errp)
1351{
1352 NetClientState *nc;
1353 NetFilterState *nf;
1354 NetFilterClass *nfc = NULL;
1355 Error *local_err = NULL;
1356
1357 QTAILQ_FOREACH(nc, &net_clients, next) {
1358 QTAILQ_FOREACH(nf, &nc->filters, next) {
1359 nfc = NETFILTER_GET_CLASS(OBJECT(nf));
1360 nfc->handle_event(nf, event, &local_err);
1361 if (local_err) {
1362 error_propagate(errp, local_err);
1363 return;
1364 }
1365 }
1366 }
1367}
1368
Luiz Capitulino4b371562011-11-23 13:11:55 -02001369void qmp_set_link(const char *name, bool up, Error **errp)
aliguori436e5e52009-01-08 19:44:06 +00001370{
Jason Wang1ceef9f2013-01-30 19:12:28 +08001371 NetClientState *ncs[MAX_QUEUE_NUM];
1372 NetClientState *nc;
1373 int queues, i;
aliguori436e5e52009-01-08 19:44:06 +00001374
Jason Wang1ceef9f2013-01-30 19:12:28 +08001375 queues = qemu_find_net_clients_except(name, ncs,
Eric Blakef394b2e2016-07-13 21:50:23 -06001376 NET_CLIENT_DRIVER__MAX,
Jason Wang1ceef9f2013-01-30 19:12:28 +08001377 MAX_QUEUE_NUM);
1378
1379 if (queues == 0) {
Markus Armbruster75158eb2015-03-16 08:57:47 +01001380 error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
1381 "Device '%s' not found", name);
Luiz Capitulino4b371562011-11-23 13:11:55 -02001382 return;
aliguori436e5e52009-01-08 19:44:06 +00001383 }
Jason Wang1ceef9f2013-01-30 19:12:28 +08001384 nc = ncs[0];
aliguori436e5e52009-01-08 19:44:06 +00001385
Jason Wang1ceef9f2013-01-30 19:12:28 +08001386 for (i = 0; i < queues; i++) {
1387 ncs[i]->link_down = !up;
1388 }
aliguori436e5e52009-01-08 19:44:06 +00001389
Stefan Hajnoczi35277d12012-07-24 16:35:14 +01001390 if (nc->info->link_status_changed) {
1391 nc->info->link_status_changed(nc);
Mark McLoughlin665a3b02009-11-25 18:49:30 +00001392 }
Michael S. Tsirkinab1cbe12011-02-09 18:45:04 +02001393
Vlad Yasevich02d38fc2013-11-21 21:05:51 -05001394 if (nc->peer) {
1395 /* Change peer link only if the peer is NIC and then notify peer.
1396 * If the peer is a HUBPORT or a backend, we do not change the
1397 * link status.
1398 *
Thomas Huthaf1a5c32018-04-30 20:02:23 +02001399 * This behavior is compatible with qemu hubs where there could be
Vlad Yasevich02d38fc2013-11-21 21:05:51 -05001400 * multiple clients that can still communicate with each other in
1401 * disconnected mode. For now maintain this compatibility.
1402 */
Eric Blakef394b2e2016-07-13 21:50:23 -06001403 if (nc->peer->info->type == NET_CLIENT_DRIVER_NIC) {
Vlad Yasevich02d38fc2013-11-21 21:05:51 -05001404 for (i = 0; i < queues; i++) {
1405 ncs[i]->peer->link_down = !up;
1406 }
1407 }
1408 if (nc->peer->info->link_status_changed) {
1409 nc->peer->info->link_status_changed(nc->peer);
1410 }
Michael S. Tsirkinab1cbe12011-02-09 18:45:04 +02001411 }
aliguori436e5e52009-01-08 19:44:06 +00001412}
1413
Michael S. Tsirkinca77d852014-09-04 11:39:13 +03001414static void net_vm_change_state_handler(void *opaque, int running,
1415 RunState state)
1416{
Fam Zheng625de442015-07-07 09:21:07 +08001417 NetClientState *nc;
1418 NetClientState *tmp;
Michael S. Tsirkinca77d852014-09-04 11:39:13 +03001419
Fam Zheng625de442015-07-07 09:21:07 +08001420 QTAILQ_FOREACH_SAFE(nc, &net_clients, next, tmp) {
1421 if (running) {
1422 /* Flush queued packets and wake up backends. */
1423 if (nc->peer && qemu_can_send_packet(nc)) {
1424 qemu_flush_queued_packets(nc->peer);
1425 }
1426 } else {
1427 /* Complete all queued packets, to guarantee we don't modify
1428 * state later when VM is not running.
1429 */
Michael S. Tsirkinca77d852014-09-04 11:39:13 +03001430 qemu_flush_or_purge_queued_packets(nc, true);
1431 }
1432 }
1433}
1434
aliguori63a01ef2008-10-31 19:10:00 +00001435void net_cleanup(void)
1436{
Jason Wang1ceef9f2013-01-30 19:12:28 +08001437 NetClientState *nc;
aliguori63a01ef2008-10-31 19:10:00 +00001438
Jason Wang1ceef9f2013-01-30 19:12:28 +08001439 /* We may del multiple entries during qemu_del_net_client(),
1440 * so QTAILQ_FOREACH_SAFE() is also not safe here.
1441 */
1442 while (!QTAILQ_EMPTY(&net_clients)) {
1443 nc = QTAILQ_FIRST(&net_clients);
Eric Blakef394b2e2016-07-13 21:50:23 -06001444 if (nc->info->type == NET_CLIENT_DRIVER_NIC) {
Jason Wang948ecf22013-01-30 19:12:24 +08001445 qemu_del_nic(qemu_get_nic(nc));
1446 } else {
1447 qemu_del_net_client(nc);
1448 }
Mark McLoughlin577c4af2009-10-08 19:58:28 +01001449 }
Michael S. Tsirkinca77d852014-09-04 11:39:13 +03001450
1451 qemu_del_vm_change_state_handler(net_change_state_entry);
aliguori63a01ef2008-10-31 19:10:00 +00001452}
1453
Markus Armbruster668680f2010-02-11 14:44:58 +01001454void net_check_clients(void)
aliguori63a01ef2008-10-31 19:10:00 +00001455{
Stefan Hajnoczi35277d12012-07-24 16:35:14 +01001456 NetClientState *nc;
Peter Maydell48e2faf2011-05-20 16:50:01 +01001457 int i;
aliguori63a01ef2008-10-31 19:10:00 +00001458
Stefan Hajnoczi81017642012-07-24 16:35:07 +01001459 net_hub_check_clients();
Tristan Gingoldac60cc12011-03-15 14:20:54 +01001460
Stefan Hajnoczi35277d12012-07-24 16:35:14 +01001461 QTAILQ_FOREACH(nc, &net_clients, next) {
1462 if (!nc->peer) {
Alistair Francis8297be82017-09-11 12:52:53 -07001463 warn_report("%s %s has no peer",
Alistair Francisb62e39b2017-09-11 12:52:56 -07001464 nc->info->type == NET_CLIENT_DRIVER_NIC
1465 ? "nic" : "netdev",
1466 nc->name);
Markus Armbrusterefe32fd2010-02-11 14:45:00 +01001467 }
1468 }
Peter Maydell48e2faf2011-05-20 16:50:01 +01001469
1470 /* Check that all NICs requested via -net nic actually got created.
1471 * NICs created via -device don't need to be checked here because
1472 * they are always instantiated.
1473 */
1474 for (i = 0; i < MAX_NICS; i++) {
1475 NICInfo *nd = &nd_table[i];
1476 if (nd->used && !nd->instantiated) {
Alistair Francis8297be82017-09-11 12:52:53 -07001477 warn_report("requested NIC (%s, model %s) "
1478 "was not created (not supported by this machine?)",
1479 nd->name ? nd->name : "anonymous",
1480 nd->model ? nd->model : "unspecified");
Peter Maydell48e2faf2011-05-20 16:50:01 +01001481 }
1482 }
aliguori63a01ef2008-10-31 19:10:00 +00001483}
Mark McLoughlindc1c9fe2009-10-06 12:17:16 +01001484
Markus Armbruster28d0de72015-03-13 13:35:14 +01001485static int net_init_client(void *dummy, QemuOpts *opts, Error **errp)
Mark McLoughlindc1c9fe2009-10-06 12:17:16 +01001486{
Thomas Huth34f708b2018-02-21 11:18:30 +01001487 return net_client_init(opts, false, errp);
Mark McLoughlinf6b134a2009-10-08 19:58:27 +01001488}
1489
Markus Armbruster28d0de72015-03-13 13:35:14 +01001490static int net_init_netdev(void *dummy, QemuOpts *opts, Error **errp)
Mark McLoughlinf6b134a2009-10-08 19:58:27 +01001491{
Thomas Huth34f708b2018-02-21 11:18:30 +01001492 return net_client_init(opts, true, errp);
Mark McLoughlindc1c9fe2009-10-06 12:17:16 +01001493}
Mark McLoughlindc1c9fe2009-10-06 12:17:16 +01001494
Thomas Huth78cd6f72018-02-21 11:18:36 +01001495/* For the convenience "--nic" parameter */
1496static int net_param_nic(void *dummy, QemuOpts *opts, Error **errp)
1497{
1498 char *mac, *nd_id;
1499 int idx, ret;
1500 NICInfo *ni;
1501 const char *type;
1502
1503 type = qemu_opt_get(opts, "type");
1504 if (type && g_str_equal(type, "none")) {
1505 return 0; /* Nothing to do, default_net is cleared in vl.c */
1506 }
1507
1508 idx = nic_get_free_idx();
1509 if (idx == -1 || nb_nics >= MAX_NICS) {
1510 error_setg(errp, "no more on-board/default NIC slots available");
Mark McLoughlinf6b134a2009-10-08 19:58:27 +01001511 return -1;
1512 }
Gerd Hoffmann3329f072010-08-20 13:52:01 +02001513
Thomas Huth78cd6f72018-02-21 11:18:36 +01001514 if (!type) {
1515 qemu_opt_set(opts, "type", "user", &error_abort);
1516 }
1517
1518 ni = &nd_table[idx];
1519 memset(ni, 0, sizeof(*ni));
1520 ni->model = qemu_opt_get_del(opts, "model");
1521
1522 /* Create an ID if the user did not specify one */
1523 nd_id = g_strdup(qemu_opts_id(opts));
1524 if (!nd_id) {
1525 nd_id = g_strdup_printf("__org.qemu.nic%i\n", idx);
1526 qemu_opts_set_id(opts, nd_id);
1527 }
1528
1529 /* Handle MAC address */
1530 mac = qemu_opt_get_del(opts, "mac");
1531 if (mac) {
1532 ret = net_parse_macaddr(ni->macaddr.a, mac);
1533 g_free(mac);
1534 if (ret) {
1535 error_setg(errp, "invalid syntax for ethernet address");
Thomas Huth9d946192018-04-30 09:26:45 +02001536 goto out;
Thomas Huth78cd6f72018-02-21 11:18:36 +01001537 }
1538 if (is_multicast_ether_addr(ni->macaddr.a)) {
1539 error_setg(errp, "NIC cannot have multicast MAC address");
Thomas Huth9d946192018-04-30 09:26:45 +02001540 ret = -1;
1541 goto out;
Thomas Huth78cd6f72018-02-21 11:18:36 +01001542 }
1543 }
1544 qemu_macaddr_default_if_unset(&ni->macaddr);
1545
1546 ret = net_client_init(opts, true, errp);
1547 if (ret == 0) {
1548 ni->netdev = qemu_find_netdev(nd_id);
1549 ni->used = true;
1550 nb_nics++;
1551 }
1552
Thomas Huth9d946192018-04-30 09:26:45 +02001553out:
Thomas Huth78cd6f72018-02-21 11:18:36 +01001554 g_free(nd_id);
Mark McLoughlindc1c9fe2009-10-06 12:17:16 +01001555 return ret;
1556}
1557
Thomas Huth34f708b2018-02-21 11:18:30 +01001558int net_init_clients(Error **errp)
aliguori63a01ef2008-10-31 19:10:00 +00001559{
Michael S. Tsirkinca77d852014-09-04 11:39:13 +03001560 net_change_state_entry =
1561 qemu_add_vm_change_state_handler(net_vm_change_state_handler, NULL);
1562
Stefan Hajnoczi94878992012-07-24 16:35:12 +01001563 QTAILQ_INIT(&net_clients);
aliguori63a01ef2008-10-31 19:10:00 +00001564
Markus Armbruster28d0de72015-03-13 13:35:14 +01001565 if (qemu_opts_foreach(qemu_find_opts("netdev"),
Thomas Huth34f708b2018-02-21 11:18:30 +01001566 net_init_netdev, NULL, errp)) {
aliguori63a01ef2008-10-31 19:10:00 +00001567 return -1;
Markus Armbrustera4c73672015-03-13 11:07:24 +01001568 }
aliguori63a01ef2008-10-31 19:10:00 +00001569
Thomas Huth78cd6f72018-02-21 11:18:36 +01001570 if (qemu_opts_foreach(qemu_find_opts("nic"), net_param_nic, NULL, errp)) {
1571 return -1;
1572 }
1573
Thomas Huth34f708b2018-02-21 11:18:30 +01001574 if (qemu_opts_foreach(qemu_find_opts("net"), net_init_client, NULL, errp)) {
aliguori63a01ef2008-10-31 19:10:00 +00001575 return -1;
1576 }
1577
aliguori63a01ef2008-10-31 19:10:00 +00001578 return 0;
1579}
1580
1581int net_client_parse(QemuOptsList *opts_list, const char *optarg)
1582{
Markus Armbruster70b94332015-02-13 12:50:26 +01001583 if (!qemu_opts_parse_noisily(opts_list, optarg, true)) {
aliguori63a01ef2008-10-31 19:10:00 +00001584 return -1;
1585 }
1586
aliguori63a01ef2008-10-31 19:10:00 +00001587 return 0;
1588}
Jason Wang7fc8d912012-03-05 11:08:50 +08001589
1590/* From FreeBSD */
1591/* XXX: optimize */
Mark Cave-Aylandeaba8f32017-12-15 18:41:43 +00001592uint32_t net_crc32(const uint8_t *p, int len)
Jason Wang7fc8d912012-03-05 11:08:50 +08001593{
1594 uint32_t crc;
1595 int carry, i, j;
1596 uint8_t b;
1597
1598 crc = 0xffffffff;
Mark Cave-Aylandeaba8f32017-12-15 18:41:43 +00001599 for (i = 0; i < len; i++) {
1600 b = *p++;
Jason Wang7fc8d912012-03-05 11:08:50 +08001601 for (j = 0; j < 8; j++) {
1602 carry = ((crc & 0x80000000L) ? 1 : 0) ^ (b & 0x01);
1603 crc <<= 1;
1604 b >>= 1;
1605 if (carry) {
Mark Cave-Aylandeaba8f32017-12-15 18:41:43 +00001606 crc = ((crc ^ POLYNOMIAL_BE) | carry);
Jason Wang7fc8d912012-03-05 11:08:50 +08001607 }
1608 }
1609 }
Mark Cave-Aylandeaba8f32017-12-15 18:41:43 +00001610
1611 return crc;
1612}
1613
Mark Cave-Aylandf1a7deb2017-12-15 18:41:44 +00001614uint32_t net_crc32_le(const uint8_t *p, int len)
1615{
1616 uint32_t crc;
1617 int carry, i, j;
1618 uint8_t b;
1619
1620 crc = 0xffffffff;
1621 for (i = 0; i < len; i++) {
1622 b = *p++;
1623 for (j = 0; j < 8; j++) {
1624 carry = (crc & 0x1) ^ (b & 0x01);
1625 crc >>= 1;
1626 b >>= 1;
1627 if (carry) {
1628 crc ^= POLYNOMIAL_LE;
1629 }
1630 }
1631 }
1632
1633 return crc;
1634}
1635
Paolo Bonzini4d454572012-11-26 16:03:42 +01001636QemuOptsList qemu_netdev_opts = {
1637 .name = "netdev",
1638 .implied_opt_name = "type",
1639 .head = QTAILQ_HEAD_INITIALIZER(qemu_netdev_opts.head),
1640 .desc = {
1641 /*
1642 * no elements => accept any params
1643 * validation will happen later
1644 */
1645 { /* end of list */ }
1646 },
1647};
1648
Thomas Huth78cd6f72018-02-21 11:18:36 +01001649QemuOptsList qemu_nic_opts = {
1650 .name = "nic",
1651 .implied_opt_name = "type",
1652 .head = QTAILQ_HEAD_INITIALIZER(qemu_nic_opts.head),
1653 .desc = {
1654 /*
1655 * no elements => accept any params
1656 * validation will happen later
1657 */
1658 { /* end of list */ }
1659 },
1660};
1661
Paolo Bonzini4d454572012-11-26 16:03:42 +01001662QemuOptsList qemu_net_opts = {
1663 .name = "net",
1664 .implied_opt_name = "type",
1665 .head = QTAILQ_HEAD_INITIALIZER(qemu_net_opts.head),
1666 .desc = {
1667 /*
1668 * no elements => accept any params
1669 * validation will happen later
1670 */
1671 { /* end of list */ }
1672 },
1673};
Zhang Chen16a3df42016-05-13 15:35:19 +08001674
1675void net_socket_rs_init(SocketReadState *rs,
Zhang Chen3cde5ea2017-07-04 14:53:46 +08001676 SocketReadStateFinalize *finalize,
1677 bool vnet_hdr)
Zhang Chen16a3df42016-05-13 15:35:19 +08001678{
1679 rs->state = 0;
Zhang Chen3cde5ea2017-07-04 14:53:46 +08001680 rs->vnet_hdr = vnet_hdr;
Zhang Chen16a3df42016-05-13 15:35:19 +08001681 rs->index = 0;
1682 rs->packet_len = 0;
Zhang Chen3cde5ea2017-07-04 14:53:46 +08001683 rs->vnet_hdr_len = 0;
Zhang Chen16a3df42016-05-13 15:35:19 +08001684 memset(rs->buf, 0, sizeof(rs->buf));
1685 rs->finalize = finalize;
1686}
1687
1688/*
1689 * Returns
Zhang Chene9e0a582016-08-18 11:23:25 +08001690 * 0: success
1691 * -1: error occurs
Zhang Chen16a3df42016-05-13 15:35:19 +08001692 */
1693int net_fill_rstate(SocketReadState *rs, const uint8_t *buf, int size)
1694{
1695 unsigned int l;
1696
1697 while (size > 0) {
Zhang Chen3cde5ea2017-07-04 14:53:46 +08001698 /* Reassemble a packet from the network.
1699 * 0 = getting length.
1700 * 1 = getting vnet header length.
1701 * 2 = getting data.
1702 */
1703 switch (rs->state) {
Zhang Chen16a3df42016-05-13 15:35:19 +08001704 case 0:
1705 l = 4 - rs->index;
1706 if (l > size) {
1707 l = size;
1708 }
1709 memcpy(rs->buf + rs->index, buf, l);
1710 buf += l;
1711 size -= l;
1712 rs->index += l;
1713 if (rs->index == 4) {
1714 /* got length */
1715 rs->packet_len = ntohl(*(uint32_t *)rs->buf);
1716 rs->index = 0;
Zhang Chen3cde5ea2017-07-04 14:53:46 +08001717 if (rs->vnet_hdr) {
1718 rs->state = 1;
1719 } else {
1720 rs->state = 2;
1721 rs->vnet_hdr_len = 0;
1722 }
Zhang Chen16a3df42016-05-13 15:35:19 +08001723 }
1724 break;
1725 case 1:
Zhang Chen3cde5ea2017-07-04 14:53:46 +08001726 l = 4 - rs->index;
1727 if (l > size) {
1728 l = size;
1729 }
1730 memcpy(rs->buf + rs->index, buf, l);
1731 buf += l;
1732 size -= l;
1733 rs->index += l;
1734 if (rs->index == 4) {
1735 /* got vnet header length */
1736 rs->vnet_hdr_len = ntohl(*(uint32_t *)rs->buf);
1737 rs->index = 0;
1738 rs->state = 2;
1739 }
1740 break;
1741 case 2:
Zhang Chen16a3df42016-05-13 15:35:19 +08001742 l = rs->packet_len - rs->index;
1743 if (l > size) {
1744 l = size;
1745 }
1746 if (rs->index + l <= sizeof(rs->buf)) {
1747 memcpy(rs->buf + rs->index, buf, l);
1748 } else {
1749 fprintf(stderr, "serious error: oversized packet received,"
1750 "connection terminated.\n");
1751 rs->index = rs->state = 0;
1752 return -1;
1753 }
1754
1755 rs->index += l;
1756 buf += l;
1757 size -= l;
1758 if (rs->index >= rs->packet_len) {
1759 rs->index = 0;
1760 rs->state = 0;
Daniel P. Berrangee79cd402016-11-04 15:46:33 +00001761 assert(rs->finalize);
1762 rs->finalize(rs);
Zhang Chen16a3df42016-05-13 15:35:19 +08001763 }
1764 break;
1765 }
1766 }
Zhang Chene9e0a582016-08-18 11:23:25 +08001767
1768 assert(size == 0);
Zhang Chen16a3df42016-05-13 15:35:19 +08001769 return 0;
1770}