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Commit | Line | Data |
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fbe78f4f AL |
1 | /* |
2 | * Virtio Network Device | |
3 | * | |
4 | * Copyright IBM, Corp. 2007 | |
5 | * | |
6 | * Authors: | |
7 | * Anthony Liguori <aliguori@us.ibm.com> | |
8 | * | |
9 | * This work is licensed under the terms of the GNU GPL, version 2. See | |
10 | * the COPYING file in the top-level directory. | |
11 | * | |
12 | */ | |
13 | ||
1de7afc9 | 14 | #include "qemu/iov.h" |
0d09e41a | 15 | #include "hw/virtio/virtio.h" |
1422e32d | 16 | #include "net/net.h" |
7200ac3c | 17 | #include "net/checksum.h" |
a8ed73f7 | 18 | #include "net/tap.h" |
1de7afc9 PB |
19 | #include "qemu/error-report.h" |
20 | #include "qemu/timer.h" | |
0d09e41a PB |
21 | #include "hw/virtio/virtio-net.h" |
22 | #include "net/vhost_net.h" | |
17ec5a86 | 23 | #include "hw/virtio/virtio-bus.h" |
b1be4280 | 24 | #include "qapi/qmp/qjson.h" |
06150279 | 25 | #include "qapi-event.h" |
1399c60d | 26 | #include "hw/virtio/virtio-access.h" |
fbe78f4f | 27 | |
0ce0e8f4 | 28 | #define VIRTIO_NET_VM_VERSION 11 |
b6503ed9 | 29 | |
4ffb17f5 | 30 | #define MAC_TABLE_ENTRIES 64 |
f21c0ed9 | 31 | #define MAX_VLAN (1 << 12) /* Per 802.1Q definition */ |
9d6271b8 | 32 | |
14f9b664 JL |
33 | /* |
34 | * Calculate the number of bytes up to and including the given 'field' of | |
35 | * 'container'. | |
36 | */ | |
37 | #define endof(container, field) \ | |
38 | (offsetof(container, field) + sizeof(((container *)0)->field)) | |
39 | ||
40 | typedef struct VirtIOFeature { | |
41 | uint32_t flags; | |
42 | size_t end; | |
43 | } VirtIOFeature; | |
44 | ||
45 | static VirtIOFeature feature_sizes[] = { | |
46 | {.flags = 1 << VIRTIO_NET_F_MAC, | |
47 | .end = endof(struct virtio_net_config, mac)}, | |
48 | {.flags = 1 << VIRTIO_NET_F_STATUS, | |
49 | .end = endof(struct virtio_net_config, status)}, | |
50 | {.flags = 1 << VIRTIO_NET_F_MQ, | |
51 | .end = endof(struct virtio_net_config, max_virtqueue_pairs)}, | |
52 | {} | |
53 | }; | |
54 | ||
fed699f9 | 55 | static VirtIONetQueue *virtio_net_get_subqueue(NetClientState *nc) |
0c87e93e JW |
56 | { |
57 | VirtIONet *n = qemu_get_nic_opaque(nc); | |
58 | ||
fed699f9 | 59 | return &n->vqs[nc->queue_index]; |
0c87e93e | 60 | } |
fed699f9 JW |
61 | |
62 | static int vq2q(int queue_index) | |
63 | { | |
64 | return queue_index / 2; | |
65 | } | |
66 | ||
fbe78f4f AL |
67 | /* TODO |
68 | * - we could suppress RX interrupt if we were so inclined. | |
69 | */ | |
70 | ||
0f03eca6 | 71 | static void virtio_net_get_config(VirtIODevice *vdev, uint8_t *config) |
fbe78f4f | 72 | { |
17a0ca55 | 73 | VirtIONet *n = VIRTIO_NET(vdev); |
fbe78f4f AL |
74 | struct virtio_net_config netcfg; |
75 | ||
1399c60d RR |
76 | virtio_stw_p(vdev, &netcfg.status, n->status); |
77 | virtio_stw_p(vdev, &netcfg.max_virtqueue_pairs, n->max_queues); | |
79674068 | 78 | memcpy(netcfg.mac, n->mac, ETH_ALEN); |
14f9b664 | 79 | memcpy(config, &netcfg, n->config_size); |
fbe78f4f AL |
80 | } |
81 | ||
0f03eca6 AL |
82 | static void virtio_net_set_config(VirtIODevice *vdev, const uint8_t *config) |
83 | { | |
17a0ca55 | 84 | VirtIONet *n = VIRTIO_NET(vdev); |
14f9b664 | 85 | struct virtio_net_config netcfg = {}; |
0f03eca6 | 86 | |
14f9b664 | 87 | memcpy(&netcfg, config, n->config_size); |
0f03eca6 | 88 | |
ef546f12 | 89 | if (!virtio_has_feature(vdev, VIRTIO_NET_F_CTRL_MAC_ADDR) && |
b6a3cddb | 90 | !virtio_has_feature(vdev, VIRTIO_F_VERSION_1) && |
c1943a3f | 91 | memcmp(netcfg.mac, n->mac, ETH_ALEN)) { |
79674068 | 92 | memcpy(n->mac, netcfg.mac, ETH_ALEN); |
b356f76d | 93 | qemu_format_nic_info_str(qemu_get_queue(n->nic), n->mac); |
0f03eca6 AL |
94 | } |
95 | } | |
96 | ||
783e7706 MT |
97 | static bool virtio_net_started(VirtIONet *n, uint8_t status) |
98 | { | |
17a0ca55 | 99 | VirtIODevice *vdev = VIRTIO_DEVICE(n); |
783e7706 | 100 | return (status & VIRTIO_CONFIG_S_DRIVER_OK) && |
17a0ca55 | 101 | (n->status & VIRTIO_NET_S_LINK_UP) && vdev->vm_running; |
783e7706 MT |
102 | } |
103 | ||
f57fcf70 JW |
104 | static void virtio_net_announce_timer(void *opaque) |
105 | { | |
106 | VirtIONet *n = opaque; | |
107 | VirtIODevice *vdev = VIRTIO_DEVICE(n); | |
108 | ||
109 | n->announce_counter--; | |
110 | n->status |= VIRTIO_NET_S_ANNOUNCE; | |
111 | virtio_notify_config(vdev); | |
112 | } | |
113 | ||
783e7706 | 114 | static void virtio_net_vhost_status(VirtIONet *n, uint8_t status) |
afbaa7b4 | 115 | { |
17a0ca55 | 116 | VirtIODevice *vdev = VIRTIO_DEVICE(n); |
b356f76d | 117 | NetClientState *nc = qemu_get_queue(n->nic); |
fed699f9 | 118 | int queues = n->multiqueue ? n->max_queues : 1; |
b356f76d | 119 | |
ed8b4afe | 120 | if (!get_vhost_net(nc->peer)) { |
afbaa7b4 MT |
121 | return; |
122 | } | |
fed699f9 | 123 | |
8c1ac475 RK |
124 | if ((virtio_net_started(n, status) && !nc->peer->link_down) == |
125 | !!n->vhost_started) { | |
afbaa7b4 MT |
126 | return; |
127 | } | |
128 | if (!n->vhost_started) { | |
086abc1c MT |
129 | int r, i; |
130 | ||
086abc1c MT |
131 | /* Any packets outstanding? Purge them to avoid touching rings |
132 | * when vhost is running. | |
133 | */ | |
134 | for (i = 0; i < queues; i++) { | |
135 | NetClientState *qnc = qemu_get_subqueue(n->nic, i); | |
136 | ||
137 | /* Purge both directions: TX and RX. */ | |
138 | qemu_net_queue_purge(qnc->peer->incoming_queue, qnc); | |
139 | qemu_net_queue_purge(qnc->incoming_queue, qnc->peer); | |
140 | } | |
141 | ||
1830b80f | 142 | n->vhost_started = 1; |
17a0ca55 | 143 | r = vhost_net_start(vdev, n->nic->ncs, queues); |
afbaa7b4 | 144 | if (r < 0) { |
e7b43f7e SH |
145 | error_report("unable to start vhost net: %d: " |
146 | "falling back on userspace virtio", -r); | |
1830b80f | 147 | n->vhost_started = 0; |
afbaa7b4 MT |
148 | } |
149 | } else { | |
17a0ca55 | 150 | vhost_net_stop(vdev, n->nic->ncs, queues); |
afbaa7b4 MT |
151 | n->vhost_started = 0; |
152 | } | |
153 | } | |
154 | ||
783e7706 MT |
155 | static void virtio_net_set_status(struct VirtIODevice *vdev, uint8_t status) |
156 | { | |
17a0ca55 | 157 | VirtIONet *n = VIRTIO_NET(vdev); |
fed699f9 JW |
158 | VirtIONetQueue *q; |
159 | int i; | |
160 | uint8_t queue_status; | |
783e7706 MT |
161 | |
162 | virtio_net_vhost_status(n, status); | |
163 | ||
fed699f9 | 164 | for (i = 0; i < n->max_queues; i++) { |
38705bb5 FZ |
165 | NetClientState *ncs = qemu_get_subqueue(n->nic, i); |
166 | bool queue_started; | |
fed699f9 | 167 | q = &n->vqs[i]; |
783e7706 | 168 | |
fed699f9 JW |
169 | if ((!n->multiqueue && i != 0) || i >= n->curr_queues) { |
170 | queue_status = 0; | |
783e7706 | 171 | } else { |
fed699f9 | 172 | queue_status = status; |
783e7706 | 173 | } |
38705bb5 FZ |
174 | queue_started = |
175 | virtio_net_started(n, queue_status) && !n->vhost_started; | |
176 | ||
177 | if (queue_started) { | |
178 | qemu_flush_queued_packets(ncs); | |
179 | } | |
fed699f9 JW |
180 | |
181 | if (!q->tx_waiting) { | |
182 | continue; | |
183 | } | |
184 | ||
38705bb5 | 185 | if (queue_started) { |
fed699f9 | 186 | if (q->tx_timer) { |
bc72ad67 AB |
187 | timer_mod(q->tx_timer, |
188 | qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + n->tx_timeout); | |
fed699f9 JW |
189 | } else { |
190 | qemu_bh_schedule(q->tx_bh); | |
191 | } | |
783e7706 | 192 | } else { |
fed699f9 | 193 | if (q->tx_timer) { |
bc72ad67 | 194 | timer_del(q->tx_timer); |
fed699f9 JW |
195 | } else { |
196 | qemu_bh_cancel(q->tx_bh); | |
197 | } | |
783e7706 MT |
198 | } |
199 | } | |
200 | } | |
201 | ||
4e68f7a0 | 202 | static void virtio_net_set_link_status(NetClientState *nc) |
554c97dd | 203 | { |
cc1f0f45 | 204 | VirtIONet *n = qemu_get_nic_opaque(nc); |
17a0ca55 | 205 | VirtIODevice *vdev = VIRTIO_DEVICE(n); |
554c97dd AL |
206 | uint16_t old_status = n->status; |
207 | ||
eb6b6c12 | 208 | if (nc->link_down) |
554c97dd AL |
209 | n->status &= ~VIRTIO_NET_S_LINK_UP; |
210 | else | |
211 | n->status |= VIRTIO_NET_S_LINK_UP; | |
212 | ||
213 | if (n->status != old_status) | |
17a0ca55 | 214 | virtio_notify_config(vdev); |
afbaa7b4 | 215 | |
17a0ca55 | 216 | virtio_net_set_status(vdev, vdev->status); |
554c97dd AL |
217 | } |
218 | ||
b1be4280 AK |
219 | static void rxfilter_notify(NetClientState *nc) |
220 | { | |
b1be4280 AK |
221 | VirtIONet *n = qemu_get_nic_opaque(nc); |
222 | ||
223 | if (nc->rxfilter_notify_enabled) { | |
96e35046 | 224 | gchar *path = object_get_canonical_path(OBJECT(n->qdev)); |
06150279 WX |
225 | qapi_event_send_nic_rx_filter_changed(!!n->netclient_name, |
226 | n->netclient_name, path, &error_abort); | |
96e35046 | 227 | g_free(path); |
b1be4280 AK |
228 | |
229 | /* disable event notification to avoid events flooding */ | |
230 | nc->rxfilter_notify_enabled = 0; | |
231 | } | |
232 | } | |
233 | ||
f7bc8ef8 AK |
234 | static intList *get_vlan_table(VirtIONet *n) |
235 | { | |
236 | intList *list, *entry; | |
237 | int i, j; | |
238 | ||
239 | list = NULL; | |
240 | for (i = 0; i < MAX_VLAN >> 5; i++) { | |
241 | for (j = 0; n->vlans[i] && j <= 0x1f; j++) { | |
242 | if (n->vlans[i] & (1U << j)) { | |
243 | entry = g_malloc0(sizeof(*entry)); | |
244 | entry->value = (i << 5) + j; | |
245 | entry->next = list; | |
246 | list = entry; | |
247 | } | |
248 | } | |
249 | } | |
250 | ||
251 | return list; | |
252 | } | |
253 | ||
b1be4280 AK |
254 | static RxFilterInfo *virtio_net_query_rxfilter(NetClientState *nc) |
255 | { | |
256 | VirtIONet *n = qemu_get_nic_opaque(nc); | |
f7bc8ef8 | 257 | VirtIODevice *vdev = VIRTIO_DEVICE(n); |
b1be4280 AK |
258 | RxFilterInfo *info; |
259 | strList *str_list, *entry; | |
f7bc8ef8 | 260 | int i; |
b1be4280 AK |
261 | |
262 | info = g_malloc0(sizeof(*info)); | |
263 | info->name = g_strdup(nc->name); | |
264 | info->promiscuous = n->promisc; | |
265 | ||
266 | if (n->nouni) { | |
267 | info->unicast = RX_STATE_NONE; | |
268 | } else if (n->alluni) { | |
269 | info->unicast = RX_STATE_ALL; | |
270 | } else { | |
271 | info->unicast = RX_STATE_NORMAL; | |
272 | } | |
273 | ||
274 | if (n->nomulti) { | |
275 | info->multicast = RX_STATE_NONE; | |
276 | } else if (n->allmulti) { | |
277 | info->multicast = RX_STATE_ALL; | |
278 | } else { | |
279 | info->multicast = RX_STATE_NORMAL; | |
280 | } | |
281 | ||
282 | info->broadcast_allowed = n->nobcast; | |
283 | info->multicast_overflow = n->mac_table.multi_overflow; | |
284 | info->unicast_overflow = n->mac_table.uni_overflow; | |
285 | ||
b0575ba4 | 286 | info->main_mac = qemu_mac_strdup_printf(n->mac); |
b1be4280 AK |
287 | |
288 | str_list = NULL; | |
289 | for (i = 0; i < n->mac_table.first_multi; i++) { | |
290 | entry = g_malloc0(sizeof(*entry)); | |
b0575ba4 | 291 | entry->value = qemu_mac_strdup_printf(n->mac_table.macs + i * ETH_ALEN); |
b1be4280 AK |
292 | entry->next = str_list; |
293 | str_list = entry; | |
294 | } | |
295 | info->unicast_table = str_list; | |
296 | ||
297 | str_list = NULL; | |
298 | for (i = n->mac_table.first_multi; i < n->mac_table.in_use; i++) { | |
299 | entry = g_malloc0(sizeof(*entry)); | |
b0575ba4 | 300 | entry->value = qemu_mac_strdup_printf(n->mac_table.macs + i * ETH_ALEN); |
b1be4280 AK |
301 | entry->next = str_list; |
302 | str_list = entry; | |
303 | } | |
304 | info->multicast_table = str_list; | |
f7bc8ef8 | 305 | info->vlan_table = get_vlan_table(n); |
b1be4280 | 306 | |
ef546f12 | 307 | if (!virtio_has_feature(vdev, VIRTIO_NET_F_CTRL_VLAN)) { |
f7bc8ef8 AK |
308 | info->vlan = RX_STATE_ALL; |
309 | } else if (!info->vlan_table) { | |
310 | info->vlan = RX_STATE_NONE; | |
311 | } else { | |
312 | info->vlan = RX_STATE_NORMAL; | |
b1be4280 | 313 | } |
b1be4280 AK |
314 | |
315 | /* enable event notification after query */ | |
316 | nc->rxfilter_notify_enabled = 1; | |
317 | ||
318 | return info; | |
319 | } | |
320 | ||
002437cd AL |
321 | static void virtio_net_reset(VirtIODevice *vdev) |
322 | { | |
17a0ca55 | 323 | VirtIONet *n = VIRTIO_NET(vdev); |
002437cd AL |
324 | |
325 | /* Reset back to compatibility mode */ | |
326 | n->promisc = 1; | |
327 | n->allmulti = 0; | |
015cb166 AW |
328 | n->alluni = 0; |
329 | n->nomulti = 0; | |
330 | n->nouni = 0; | |
331 | n->nobcast = 0; | |
fed699f9 JW |
332 | /* multiqueue is disabled by default */ |
333 | n->curr_queues = 1; | |
f57fcf70 JW |
334 | timer_del(n->announce_timer); |
335 | n->announce_counter = 0; | |
336 | n->status &= ~VIRTIO_NET_S_ANNOUNCE; | |
b6503ed9 | 337 | |
f21c0ed9 | 338 | /* Flush any MAC and VLAN filter table state */ |
b6503ed9 | 339 | n->mac_table.in_use = 0; |
2d9aba39 | 340 | n->mac_table.first_multi = 0; |
8fd2a2f1 AW |
341 | n->mac_table.multi_overflow = 0; |
342 | n->mac_table.uni_overflow = 0; | |
b6503ed9 | 343 | memset(n->mac_table.macs, 0, MAC_TABLE_ENTRIES * ETH_ALEN); |
41dc8a67 | 344 | memcpy(&n->mac[0], &n->nic->conf->macaddr, sizeof(n->mac)); |
702d66a8 | 345 | qemu_format_nic_info_str(qemu_get_queue(n->nic), n->mac); |
f21c0ed9 | 346 | memset(n->vlans, 0, MAX_VLAN >> 3); |
002437cd AL |
347 | } |
348 | ||
6e371ab8 | 349 | static void peer_test_vnet_hdr(VirtIONet *n) |
3a330134 | 350 | { |
b356f76d JW |
351 | NetClientState *nc = qemu_get_queue(n->nic); |
352 | if (!nc->peer) { | |
6e371ab8 | 353 | return; |
b356f76d | 354 | } |
3a330134 | 355 | |
d6085e3a | 356 | n->has_vnet_hdr = qemu_has_vnet_hdr(nc->peer); |
6e371ab8 | 357 | } |
3a330134 | 358 | |
6e371ab8 MT |
359 | static int peer_has_vnet_hdr(VirtIONet *n) |
360 | { | |
3a330134 MM |
361 | return n->has_vnet_hdr; |
362 | } | |
363 | ||
0ce0e8f4 MM |
364 | static int peer_has_ufo(VirtIONet *n) |
365 | { | |
366 | if (!peer_has_vnet_hdr(n)) | |
367 | return 0; | |
368 | ||
d6085e3a | 369 | n->has_ufo = qemu_has_ufo(qemu_get_queue(n->nic)->peer); |
0ce0e8f4 MM |
370 | |
371 | return n->has_ufo; | |
372 | } | |
373 | ||
bb9d17f8 CH |
374 | static void virtio_net_set_mrg_rx_bufs(VirtIONet *n, int mergeable_rx_bufs, |
375 | int version_1) | |
ff3a8066 | 376 | { |
fed699f9 JW |
377 | int i; |
378 | NetClientState *nc; | |
379 | ||
ff3a8066 MT |
380 | n->mergeable_rx_bufs = mergeable_rx_bufs; |
381 | ||
bb9d17f8 CH |
382 | if (version_1) { |
383 | n->guest_hdr_len = sizeof(struct virtio_net_hdr_mrg_rxbuf); | |
384 | } else { | |
385 | n->guest_hdr_len = n->mergeable_rx_bufs ? | |
386 | sizeof(struct virtio_net_hdr_mrg_rxbuf) : | |
387 | sizeof(struct virtio_net_hdr); | |
388 | } | |
ff3a8066 | 389 | |
fed699f9 JW |
390 | for (i = 0; i < n->max_queues; i++) { |
391 | nc = qemu_get_subqueue(n->nic, i); | |
392 | ||
393 | if (peer_has_vnet_hdr(n) && | |
d6085e3a SH |
394 | qemu_has_vnet_hdr_len(nc->peer, n->guest_hdr_len)) { |
395 | qemu_set_vnet_hdr_len(nc->peer, n->guest_hdr_len); | |
fed699f9 JW |
396 | n->host_hdr_len = n->guest_hdr_len; |
397 | } | |
ff3a8066 MT |
398 | } |
399 | } | |
400 | ||
fed699f9 JW |
401 | static int peer_attach(VirtIONet *n, int index) |
402 | { | |
403 | NetClientState *nc = qemu_get_subqueue(n->nic, index); | |
404 | ||
405 | if (!nc->peer) { | |
406 | return 0; | |
407 | } | |
408 | ||
409 | if (nc->peer->info->type != NET_CLIENT_OPTIONS_KIND_TAP) { | |
410 | return 0; | |
411 | } | |
412 | ||
413 | return tap_enable(nc->peer); | |
414 | } | |
415 | ||
416 | static int peer_detach(VirtIONet *n, int index) | |
417 | { | |
418 | NetClientState *nc = qemu_get_subqueue(n->nic, index); | |
419 | ||
420 | if (!nc->peer) { | |
421 | return 0; | |
422 | } | |
423 | ||
424 | if (nc->peer->info->type != NET_CLIENT_OPTIONS_KIND_TAP) { | |
425 | return 0; | |
426 | } | |
427 | ||
428 | return tap_disable(nc->peer); | |
429 | } | |
430 | ||
431 | static void virtio_net_set_queues(VirtIONet *n) | |
432 | { | |
433 | int i; | |
ddfa83ea | 434 | int r; |
fed699f9 JW |
435 | |
436 | for (i = 0; i < n->max_queues; i++) { | |
437 | if (i < n->curr_queues) { | |
ddfa83ea JS |
438 | r = peer_attach(n, i); |
439 | assert(!r); | |
fed699f9 | 440 | } else { |
ddfa83ea JS |
441 | r = peer_detach(n, i); |
442 | assert(!r); | |
fed699f9 JW |
443 | } |
444 | } | |
445 | } | |
446 | ||
ec57db16 | 447 | static void virtio_net_set_multiqueue(VirtIONet *n, int multiqueue); |
fed699f9 | 448 | |
019a3edb | 449 | static uint64_t virtio_net_get_features(VirtIODevice *vdev, uint64_t features) |
fbe78f4f | 450 | { |
17a0ca55 | 451 | VirtIONet *n = VIRTIO_NET(vdev); |
b356f76d | 452 | NetClientState *nc = qemu_get_queue(n->nic); |
fbe78f4f | 453 | |
da3e8a23 SZ |
454 | /* Firstly sync all virtio-net possible supported features */ |
455 | features |= n->host_features; | |
456 | ||
0cd09c3a | 457 | virtio_add_feature(&features, VIRTIO_NET_F_MAC); |
c9f79a3f | 458 | |
6e371ab8 | 459 | if (!peer_has_vnet_hdr(n)) { |
0cd09c3a CH |
460 | virtio_clear_feature(&features, VIRTIO_NET_F_CSUM); |
461 | virtio_clear_feature(&features, VIRTIO_NET_F_HOST_TSO4); | |
462 | virtio_clear_feature(&features, VIRTIO_NET_F_HOST_TSO6); | |
463 | virtio_clear_feature(&features, VIRTIO_NET_F_HOST_ECN); | |
8172539d | 464 | |
0cd09c3a CH |
465 | virtio_clear_feature(&features, VIRTIO_NET_F_GUEST_CSUM); |
466 | virtio_clear_feature(&features, VIRTIO_NET_F_GUEST_TSO4); | |
467 | virtio_clear_feature(&features, VIRTIO_NET_F_GUEST_TSO6); | |
468 | virtio_clear_feature(&features, VIRTIO_NET_F_GUEST_ECN); | |
8172539d | 469 | } |
3a330134 | 470 | |
8172539d | 471 | if (!peer_has_vnet_hdr(n) || !peer_has_ufo(n)) { |
0cd09c3a CH |
472 | virtio_clear_feature(&features, VIRTIO_NET_F_GUEST_UFO); |
473 | virtio_clear_feature(&features, VIRTIO_NET_F_HOST_UFO); | |
3a330134 MM |
474 | } |
475 | ||
ed8b4afe | 476 | if (!get_vhost_net(nc->peer)) { |
9bc6304c MT |
477 | return features; |
478 | } | |
ed8b4afe | 479 | return vhost_net_get_features(get_vhost_net(nc->peer), features); |
fbe78f4f AL |
480 | } |
481 | ||
019a3edb | 482 | static uint64_t virtio_net_bad_features(VirtIODevice *vdev) |
8eca6b1b | 483 | { |
019a3edb | 484 | uint64_t features = 0; |
8eca6b1b AL |
485 | |
486 | /* Linux kernel 2.6.25. It understood MAC (as everyone must), | |
487 | * but also these: */ | |
0cd09c3a CH |
488 | virtio_add_feature(&features, VIRTIO_NET_F_MAC); |
489 | virtio_add_feature(&features, VIRTIO_NET_F_CSUM); | |
490 | virtio_add_feature(&features, VIRTIO_NET_F_HOST_TSO4); | |
491 | virtio_add_feature(&features, VIRTIO_NET_F_HOST_TSO6); | |
492 | virtio_add_feature(&features, VIRTIO_NET_F_HOST_ECN); | |
8eca6b1b | 493 | |
8172539d | 494 | return features; |
8eca6b1b AL |
495 | } |
496 | ||
644c9858 DF |
497 | static void virtio_net_apply_guest_offloads(VirtIONet *n) |
498 | { | |
ad37bb3b | 499 | qemu_set_offload(qemu_get_queue(n->nic)->peer, |
644c9858 DF |
500 | !!(n->curr_guest_offloads & (1ULL << VIRTIO_NET_F_GUEST_CSUM)), |
501 | !!(n->curr_guest_offloads & (1ULL << VIRTIO_NET_F_GUEST_TSO4)), | |
502 | !!(n->curr_guest_offloads & (1ULL << VIRTIO_NET_F_GUEST_TSO6)), | |
503 | !!(n->curr_guest_offloads & (1ULL << VIRTIO_NET_F_GUEST_ECN)), | |
504 | !!(n->curr_guest_offloads & (1ULL << VIRTIO_NET_F_GUEST_UFO))); | |
505 | } | |
506 | ||
507 | static uint64_t virtio_net_guest_offloads_by_features(uint32_t features) | |
508 | { | |
509 | static const uint64_t guest_offloads_mask = | |
510 | (1ULL << VIRTIO_NET_F_GUEST_CSUM) | | |
511 | (1ULL << VIRTIO_NET_F_GUEST_TSO4) | | |
512 | (1ULL << VIRTIO_NET_F_GUEST_TSO6) | | |
513 | (1ULL << VIRTIO_NET_F_GUEST_ECN) | | |
514 | (1ULL << VIRTIO_NET_F_GUEST_UFO); | |
515 | ||
516 | return guest_offloads_mask & features; | |
517 | } | |
518 | ||
519 | static inline uint64_t virtio_net_supported_guest_offloads(VirtIONet *n) | |
520 | { | |
521 | VirtIODevice *vdev = VIRTIO_DEVICE(n); | |
522 | return virtio_net_guest_offloads_by_features(vdev->guest_features); | |
523 | } | |
524 | ||
d5aaa1b0 | 525 | static void virtio_net_set_features(VirtIODevice *vdev, uint64_t features) |
fbe78f4f | 526 | { |
17a0ca55 | 527 | VirtIONet *n = VIRTIO_NET(vdev); |
fed699f9 JW |
528 | int i; |
529 | ||
ef546f12 CH |
530 | virtio_net_set_multiqueue(n, |
531 | __virtio_has_feature(features, VIRTIO_NET_F_MQ)); | |
fbe78f4f | 532 | |
ef546f12 CH |
533 | virtio_net_set_mrg_rx_bufs(n, |
534 | __virtio_has_feature(features, | |
bb9d17f8 CH |
535 | VIRTIO_NET_F_MRG_RXBUF), |
536 | __virtio_has_feature(features, | |
537 | VIRTIO_F_VERSION_1)); | |
f5436dd9 MM |
538 | |
539 | if (n->has_vnet_hdr) { | |
644c9858 DF |
540 | n->curr_guest_offloads = |
541 | virtio_net_guest_offloads_by_features(features); | |
542 | virtio_net_apply_guest_offloads(n); | |
f5436dd9 | 543 | } |
fed699f9 JW |
544 | |
545 | for (i = 0; i < n->max_queues; i++) { | |
546 | NetClientState *nc = qemu_get_subqueue(n->nic, i); | |
547 | ||
ed8b4afe | 548 | if (!get_vhost_net(nc->peer)) { |
fed699f9 JW |
549 | continue; |
550 | } | |
ed8b4afe | 551 | vhost_net_ack_features(get_vhost_net(nc->peer), features); |
dc14a397 | 552 | } |
0b1eaa88 | 553 | |
ef546f12 | 554 | if (__virtio_has_feature(features, VIRTIO_NET_F_CTRL_VLAN)) { |
0b1eaa88 SF |
555 | memset(n->vlans, 0, MAX_VLAN >> 3); |
556 | } else { | |
557 | memset(n->vlans, 0xff, MAX_VLAN >> 3); | |
558 | } | |
fbe78f4f AL |
559 | } |
560 | ||
002437cd | 561 | static int virtio_net_handle_rx_mode(VirtIONet *n, uint8_t cmd, |
921ac5d0 | 562 | struct iovec *iov, unsigned int iov_cnt) |
002437cd AL |
563 | { |
564 | uint8_t on; | |
921ac5d0 | 565 | size_t s; |
b1be4280 | 566 | NetClientState *nc = qemu_get_queue(n->nic); |
002437cd | 567 | |
921ac5d0 MT |
568 | s = iov_to_buf(iov, iov_cnt, 0, &on, sizeof(on)); |
569 | if (s != sizeof(on)) { | |
570 | return VIRTIO_NET_ERR; | |
002437cd AL |
571 | } |
572 | ||
dd23454b | 573 | if (cmd == VIRTIO_NET_CTRL_RX_PROMISC) { |
002437cd | 574 | n->promisc = on; |
dd23454b | 575 | } else if (cmd == VIRTIO_NET_CTRL_RX_ALLMULTI) { |
002437cd | 576 | n->allmulti = on; |
dd23454b | 577 | } else if (cmd == VIRTIO_NET_CTRL_RX_ALLUNI) { |
015cb166 | 578 | n->alluni = on; |
dd23454b | 579 | } else if (cmd == VIRTIO_NET_CTRL_RX_NOMULTI) { |
015cb166 | 580 | n->nomulti = on; |
dd23454b | 581 | } else if (cmd == VIRTIO_NET_CTRL_RX_NOUNI) { |
015cb166 | 582 | n->nouni = on; |
dd23454b | 583 | } else if (cmd == VIRTIO_NET_CTRL_RX_NOBCAST) { |
015cb166 | 584 | n->nobcast = on; |
921ac5d0 | 585 | } else { |
002437cd | 586 | return VIRTIO_NET_ERR; |
921ac5d0 | 587 | } |
002437cd | 588 | |
b1be4280 AK |
589 | rxfilter_notify(nc); |
590 | ||
002437cd AL |
591 | return VIRTIO_NET_OK; |
592 | } | |
593 | ||
644c9858 DF |
594 | static int virtio_net_handle_offloads(VirtIONet *n, uint8_t cmd, |
595 | struct iovec *iov, unsigned int iov_cnt) | |
596 | { | |
597 | VirtIODevice *vdev = VIRTIO_DEVICE(n); | |
598 | uint64_t offloads; | |
599 | size_t s; | |
600 | ||
ef546f12 | 601 | if (!virtio_has_feature(vdev, VIRTIO_NET_F_CTRL_GUEST_OFFLOADS)) { |
644c9858 DF |
602 | return VIRTIO_NET_ERR; |
603 | } | |
604 | ||
605 | s = iov_to_buf(iov, iov_cnt, 0, &offloads, sizeof(offloads)); | |
606 | if (s != sizeof(offloads)) { | |
607 | return VIRTIO_NET_ERR; | |
608 | } | |
609 | ||
610 | if (cmd == VIRTIO_NET_CTRL_GUEST_OFFLOADS_SET) { | |
611 | uint64_t supported_offloads; | |
612 | ||
613 | if (!n->has_vnet_hdr) { | |
614 | return VIRTIO_NET_ERR; | |
615 | } | |
616 | ||
617 | supported_offloads = virtio_net_supported_guest_offloads(n); | |
618 | if (offloads & ~supported_offloads) { | |
619 | return VIRTIO_NET_ERR; | |
620 | } | |
621 | ||
622 | n->curr_guest_offloads = offloads; | |
623 | virtio_net_apply_guest_offloads(n); | |
624 | ||
625 | return VIRTIO_NET_OK; | |
626 | } else { | |
627 | return VIRTIO_NET_ERR; | |
628 | } | |
629 | } | |
630 | ||
b6503ed9 | 631 | static int virtio_net_handle_mac(VirtIONet *n, uint8_t cmd, |
921ac5d0 | 632 | struct iovec *iov, unsigned int iov_cnt) |
b6503ed9 | 633 | { |
1399c60d | 634 | VirtIODevice *vdev = VIRTIO_DEVICE(n); |
b6503ed9 | 635 | struct virtio_net_ctrl_mac mac_data; |
921ac5d0 | 636 | size_t s; |
b1be4280 | 637 | NetClientState *nc = qemu_get_queue(n->nic); |
b6503ed9 | 638 | |
c1943a3f AK |
639 | if (cmd == VIRTIO_NET_CTRL_MAC_ADDR_SET) { |
640 | if (iov_size(iov, iov_cnt) != sizeof(n->mac)) { | |
641 | return VIRTIO_NET_ERR; | |
642 | } | |
643 | s = iov_to_buf(iov, iov_cnt, 0, &n->mac, sizeof(n->mac)); | |
644 | assert(s == sizeof(n->mac)); | |
b356f76d | 645 | qemu_format_nic_info_str(qemu_get_queue(n->nic), n->mac); |
b1be4280 AK |
646 | rxfilter_notify(nc); |
647 | ||
c1943a3f AK |
648 | return VIRTIO_NET_OK; |
649 | } | |
650 | ||
921ac5d0 | 651 | if (cmd != VIRTIO_NET_CTRL_MAC_TABLE_SET) { |
b6503ed9 | 652 | return VIRTIO_NET_ERR; |
921ac5d0 | 653 | } |
b6503ed9 | 654 | |
cae2e556 AK |
655 | int in_use = 0; |
656 | int first_multi = 0; | |
657 | uint8_t uni_overflow = 0; | |
658 | uint8_t multi_overflow = 0; | |
659 | uint8_t *macs = g_malloc0(MAC_TABLE_ENTRIES * ETH_ALEN); | |
b6503ed9 | 660 | |
921ac5d0 MT |
661 | s = iov_to_buf(iov, iov_cnt, 0, &mac_data.entries, |
662 | sizeof(mac_data.entries)); | |
1399c60d | 663 | mac_data.entries = virtio_ldl_p(vdev, &mac_data.entries); |
921ac5d0 | 664 | if (s != sizeof(mac_data.entries)) { |
b1be4280 | 665 | goto error; |
921ac5d0 MT |
666 | } |
667 | iov_discard_front(&iov, &iov_cnt, s); | |
b6503ed9 | 668 | |
921ac5d0 | 669 | if (mac_data.entries * ETH_ALEN > iov_size(iov, iov_cnt)) { |
b1be4280 | 670 | goto error; |
921ac5d0 | 671 | } |
b6503ed9 AL |
672 | |
673 | if (mac_data.entries <= MAC_TABLE_ENTRIES) { | |
cae2e556 | 674 | s = iov_to_buf(iov, iov_cnt, 0, macs, |
921ac5d0 MT |
675 | mac_data.entries * ETH_ALEN); |
676 | if (s != mac_data.entries * ETH_ALEN) { | |
b1be4280 | 677 | goto error; |
921ac5d0 | 678 | } |
cae2e556 | 679 | in_use += mac_data.entries; |
b6503ed9 | 680 | } else { |
cae2e556 | 681 | uni_overflow = 1; |
b6503ed9 AL |
682 | } |
683 | ||
921ac5d0 MT |
684 | iov_discard_front(&iov, &iov_cnt, mac_data.entries * ETH_ALEN); |
685 | ||
cae2e556 | 686 | first_multi = in_use; |
2d9aba39 | 687 | |
921ac5d0 MT |
688 | s = iov_to_buf(iov, iov_cnt, 0, &mac_data.entries, |
689 | sizeof(mac_data.entries)); | |
1399c60d | 690 | mac_data.entries = virtio_ldl_p(vdev, &mac_data.entries); |
921ac5d0 | 691 | if (s != sizeof(mac_data.entries)) { |
b1be4280 | 692 | goto error; |
921ac5d0 MT |
693 | } |
694 | ||
695 | iov_discard_front(&iov, &iov_cnt, s); | |
b6503ed9 | 696 | |
921ac5d0 | 697 | if (mac_data.entries * ETH_ALEN != iov_size(iov, iov_cnt)) { |
b1be4280 | 698 | goto error; |
921ac5d0 | 699 | } |
b6503ed9 | 700 | |
edc24385 | 701 | if (mac_data.entries <= MAC_TABLE_ENTRIES - in_use) { |
cae2e556 | 702 | s = iov_to_buf(iov, iov_cnt, 0, &macs[in_use * ETH_ALEN], |
921ac5d0 MT |
703 | mac_data.entries * ETH_ALEN); |
704 | if (s != mac_data.entries * ETH_ALEN) { | |
b1be4280 | 705 | goto error; |
8fd2a2f1 | 706 | } |
cae2e556 | 707 | in_use += mac_data.entries; |
921ac5d0 | 708 | } else { |
cae2e556 | 709 | multi_overflow = 1; |
b6503ed9 AL |
710 | } |
711 | ||
cae2e556 AK |
712 | n->mac_table.in_use = in_use; |
713 | n->mac_table.first_multi = first_multi; | |
714 | n->mac_table.uni_overflow = uni_overflow; | |
715 | n->mac_table.multi_overflow = multi_overflow; | |
716 | memcpy(n->mac_table.macs, macs, MAC_TABLE_ENTRIES * ETH_ALEN); | |
717 | g_free(macs); | |
b1be4280 AK |
718 | rxfilter_notify(nc); |
719 | ||
b6503ed9 | 720 | return VIRTIO_NET_OK; |
b1be4280 AK |
721 | |
722 | error: | |
cae2e556 | 723 | g_free(macs); |
b1be4280 | 724 | return VIRTIO_NET_ERR; |
b6503ed9 AL |
725 | } |
726 | ||
f21c0ed9 | 727 | static int virtio_net_handle_vlan_table(VirtIONet *n, uint8_t cmd, |
921ac5d0 | 728 | struct iovec *iov, unsigned int iov_cnt) |
f21c0ed9 | 729 | { |
1399c60d | 730 | VirtIODevice *vdev = VIRTIO_DEVICE(n); |
f21c0ed9 | 731 | uint16_t vid; |
921ac5d0 | 732 | size_t s; |
b1be4280 | 733 | NetClientState *nc = qemu_get_queue(n->nic); |
f21c0ed9 | 734 | |
921ac5d0 | 735 | s = iov_to_buf(iov, iov_cnt, 0, &vid, sizeof(vid)); |
1399c60d | 736 | vid = virtio_lduw_p(vdev, &vid); |
921ac5d0 | 737 | if (s != sizeof(vid)) { |
f21c0ed9 AL |
738 | return VIRTIO_NET_ERR; |
739 | } | |
740 | ||
f21c0ed9 AL |
741 | if (vid >= MAX_VLAN) |
742 | return VIRTIO_NET_ERR; | |
743 | ||
744 | if (cmd == VIRTIO_NET_CTRL_VLAN_ADD) | |
745 | n->vlans[vid >> 5] |= (1U << (vid & 0x1f)); | |
746 | else if (cmd == VIRTIO_NET_CTRL_VLAN_DEL) | |
747 | n->vlans[vid >> 5] &= ~(1U << (vid & 0x1f)); | |
748 | else | |
749 | return VIRTIO_NET_ERR; | |
750 | ||
b1be4280 AK |
751 | rxfilter_notify(nc); |
752 | ||
f21c0ed9 AL |
753 | return VIRTIO_NET_OK; |
754 | } | |
755 | ||
f57fcf70 JW |
756 | static int virtio_net_handle_announce(VirtIONet *n, uint8_t cmd, |
757 | struct iovec *iov, unsigned int iov_cnt) | |
758 | { | |
759 | if (cmd == VIRTIO_NET_CTRL_ANNOUNCE_ACK && | |
760 | n->status & VIRTIO_NET_S_ANNOUNCE) { | |
761 | n->status &= ~VIRTIO_NET_S_ANNOUNCE; | |
762 | if (n->announce_counter) { | |
763 | timer_mod(n->announce_timer, | |
764 | qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) + | |
765 | self_announce_delay(n->announce_counter)); | |
766 | } | |
767 | return VIRTIO_NET_OK; | |
768 | } else { | |
769 | return VIRTIO_NET_ERR; | |
770 | } | |
771 | } | |
772 | ||
fed699f9 | 773 | static int virtio_net_handle_mq(VirtIONet *n, uint8_t cmd, |
f8f7c533 | 774 | struct iovec *iov, unsigned int iov_cnt) |
fed699f9 | 775 | { |
17a0ca55 | 776 | VirtIODevice *vdev = VIRTIO_DEVICE(n); |
f8f7c533 JW |
777 | struct virtio_net_ctrl_mq mq; |
778 | size_t s; | |
779 | uint16_t queues; | |
fed699f9 | 780 | |
f8f7c533 JW |
781 | s = iov_to_buf(iov, iov_cnt, 0, &mq, sizeof(mq)); |
782 | if (s != sizeof(mq)) { | |
fed699f9 JW |
783 | return VIRTIO_NET_ERR; |
784 | } | |
785 | ||
786 | if (cmd != VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET) { | |
787 | return VIRTIO_NET_ERR; | |
788 | } | |
789 | ||
1399c60d | 790 | queues = virtio_lduw_p(vdev, &mq.virtqueue_pairs); |
fed699f9 | 791 | |
f8f7c533 JW |
792 | if (queues < VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MIN || |
793 | queues > VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MAX || | |
794 | queues > n->max_queues || | |
fed699f9 JW |
795 | !n->multiqueue) { |
796 | return VIRTIO_NET_ERR; | |
797 | } | |
798 | ||
f8f7c533 | 799 | n->curr_queues = queues; |
fed699f9 JW |
800 | /* stop the backend before changing the number of queues to avoid handling a |
801 | * disabled queue */ | |
17a0ca55 | 802 | virtio_net_set_status(vdev, vdev->status); |
fed699f9 JW |
803 | virtio_net_set_queues(n); |
804 | ||
805 | return VIRTIO_NET_OK; | |
806 | } | |
3d11d36c AL |
807 | static void virtio_net_handle_ctrl(VirtIODevice *vdev, VirtQueue *vq) |
808 | { | |
17a0ca55 | 809 | VirtIONet *n = VIRTIO_NET(vdev); |
3d11d36c AL |
810 | struct virtio_net_ctrl_hdr ctrl; |
811 | virtio_net_ctrl_ack status = VIRTIO_NET_ERR; | |
812 | VirtQueueElement elem; | |
921ac5d0 | 813 | size_t s; |
771b6ed3 | 814 | struct iovec *iov, *iov2; |
921ac5d0 | 815 | unsigned int iov_cnt; |
3d11d36c AL |
816 | |
817 | while (virtqueue_pop(vq, &elem)) { | |
921ac5d0 MT |
818 | if (iov_size(elem.in_sg, elem.in_num) < sizeof(status) || |
819 | iov_size(elem.out_sg, elem.out_num) < sizeof(ctrl)) { | |
e7b43f7e | 820 | error_report("virtio-net ctrl missing headers"); |
3d11d36c AL |
821 | exit(1); |
822 | } | |
823 | ||
921ac5d0 | 824 | iov_cnt = elem.out_num; |
771b6ed3 | 825 | iov2 = iov = g_memdup(elem.out_sg, sizeof(struct iovec) * elem.out_num); |
921ac5d0 MT |
826 | s = iov_to_buf(iov, iov_cnt, 0, &ctrl, sizeof(ctrl)); |
827 | iov_discard_front(&iov, &iov_cnt, sizeof(ctrl)); | |
828 | if (s != sizeof(ctrl)) { | |
829 | status = VIRTIO_NET_ERR; | |
dd23454b | 830 | } else if (ctrl.class == VIRTIO_NET_CTRL_RX) { |
921ac5d0 MT |
831 | status = virtio_net_handle_rx_mode(n, ctrl.cmd, iov, iov_cnt); |
832 | } else if (ctrl.class == VIRTIO_NET_CTRL_MAC) { | |
833 | status = virtio_net_handle_mac(n, ctrl.cmd, iov, iov_cnt); | |
834 | } else if (ctrl.class == VIRTIO_NET_CTRL_VLAN) { | |
835 | status = virtio_net_handle_vlan_table(n, ctrl.cmd, iov, iov_cnt); | |
f57fcf70 JW |
836 | } else if (ctrl.class == VIRTIO_NET_CTRL_ANNOUNCE) { |
837 | status = virtio_net_handle_announce(n, ctrl.cmd, iov, iov_cnt); | |
fed699f9 | 838 | } else if (ctrl.class == VIRTIO_NET_CTRL_MQ) { |
f8f7c533 | 839 | status = virtio_net_handle_mq(n, ctrl.cmd, iov, iov_cnt); |
644c9858 DF |
840 | } else if (ctrl.class == VIRTIO_NET_CTRL_GUEST_OFFLOADS) { |
841 | status = virtio_net_handle_offloads(n, ctrl.cmd, iov, iov_cnt); | |
3d11d36c AL |
842 | } |
843 | ||
921ac5d0 MT |
844 | s = iov_from_buf(elem.in_sg, elem.in_num, 0, &status, sizeof(status)); |
845 | assert(s == sizeof(status)); | |
3d11d36c AL |
846 | |
847 | virtqueue_push(vq, &elem, sizeof(status)); | |
848 | virtio_notify(vdev, vq); | |
771b6ed3 | 849 | g_free(iov2); |
3d11d36c AL |
850 | } |
851 | } | |
852 | ||
fbe78f4f AL |
853 | /* RX */ |
854 | ||
855 | static void virtio_net_handle_rx(VirtIODevice *vdev, VirtQueue *vq) | |
856 | { | |
17a0ca55 | 857 | VirtIONet *n = VIRTIO_NET(vdev); |
fed699f9 | 858 | int queue_index = vq2q(virtio_get_queue_index(vq)); |
8aeff62d | 859 | |
fed699f9 | 860 | qemu_flush_queued_packets(qemu_get_subqueue(n->nic, queue_index)); |
fbe78f4f AL |
861 | } |
862 | ||
4e68f7a0 | 863 | static int virtio_net_can_receive(NetClientState *nc) |
fbe78f4f | 864 | { |
cc1f0f45 | 865 | VirtIONet *n = qemu_get_nic_opaque(nc); |
17a0ca55 | 866 | VirtIODevice *vdev = VIRTIO_DEVICE(n); |
fed699f9 | 867 | VirtIONetQueue *q = virtio_net_get_subqueue(nc); |
0c87e93e | 868 | |
17a0ca55 | 869 | if (!vdev->vm_running) { |
95477323 MT |
870 | return 0; |
871 | } | |
cdd5cc12 | 872 | |
fed699f9 JW |
873 | if (nc->queue_index >= n->curr_queues) { |
874 | return 0; | |
875 | } | |
876 | ||
0c87e93e | 877 | if (!virtio_queue_ready(q->rx_vq) || |
17a0ca55 | 878 | !(vdev->status & VIRTIO_CONFIG_S_DRIVER_OK)) { |
fbe78f4f | 879 | return 0; |
0c87e93e | 880 | } |
fbe78f4f | 881 | |
cdd5cc12 MM |
882 | return 1; |
883 | } | |
884 | ||
0c87e93e | 885 | static int virtio_net_has_buffers(VirtIONetQueue *q, int bufsize) |
cdd5cc12 | 886 | { |
0c87e93e JW |
887 | VirtIONet *n = q->n; |
888 | if (virtio_queue_empty(q->rx_vq) || | |
fbe78f4f | 889 | (n->mergeable_rx_bufs && |
0c87e93e JW |
890 | !virtqueue_avail_bytes(q->rx_vq, bufsize, 0))) { |
891 | virtio_queue_set_notification(q->rx_vq, 1); | |
06b12970 TL |
892 | |
893 | /* To avoid a race condition where the guest has made some buffers | |
894 | * available after the above check but before notification was | |
895 | * enabled, check for available buffers again. | |
896 | */ | |
0c87e93e | 897 | if (virtio_queue_empty(q->rx_vq) || |
06b12970 | 898 | (n->mergeable_rx_bufs && |
0c87e93e | 899 | !virtqueue_avail_bytes(q->rx_vq, bufsize, 0))) { |
06b12970 | 900 | return 0; |
0c87e93e | 901 | } |
fbe78f4f AL |
902 | } |
903 | ||
0c87e93e | 904 | virtio_queue_set_notification(q->rx_vq, 0); |
fbe78f4f AL |
905 | return 1; |
906 | } | |
907 | ||
1399c60d | 908 | static void virtio_net_hdr_swap(VirtIODevice *vdev, struct virtio_net_hdr *hdr) |
032a74a1 | 909 | { |
1399c60d RR |
910 | virtio_tswap16s(vdev, &hdr->hdr_len); |
911 | virtio_tswap16s(vdev, &hdr->gso_size); | |
912 | virtio_tswap16s(vdev, &hdr->csum_start); | |
913 | virtio_tswap16s(vdev, &hdr->csum_offset); | |
032a74a1 CLG |
914 | } |
915 | ||
1d41b0c1 AL |
916 | /* dhclient uses AF_PACKET but doesn't pass auxdata to the kernel so |
917 | * it never finds out that the packets don't have valid checksums. This | |
918 | * causes dhclient to get upset. Fedora's carried a patch for ages to | |
919 | * fix this with Xen but it hasn't appeared in an upstream release of | |
920 | * dhclient yet. | |
921 | * | |
922 | * To avoid breaking existing guests, we catch udp packets and add | |
923 | * checksums. This is terrible but it's better than hacking the guest | |
924 | * kernels. | |
925 | * | |
926 | * N.B. if we introduce a zero-copy API, this operation is no longer free so | |
927 | * we should provide a mechanism to disable it to avoid polluting the host | |
928 | * cache. | |
929 | */ | |
930 | static void work_around_broken_dhclient(struct virtio_net_hdr *hdr, | |
22cc84db | 931 | uint8_t *buf, size_t size) |
1d41b0c1 AL |
932 | { |
933 | if ((hdr->flags & VIRTIO_NET_HDR_F_NEEDS_CSUM) && /* missing csum */ | |
934 | (size > 27 && size < 1500) && /* normal sized MTU */ | |
935 | (buf[12] == 0x08 && buf[13] == 0x00) && /* ethertype == IPv4 */ | |
936 | (buf[23] == 17) && /* ip.protocol == UDP */ | |
937 | (buf[34] == 0 && buf[35] == 67)) { /* udp.srcport == bootps */ | |
22cc84db | 938 | net_checksum_calculate(buf, size); |
1d41b0c1 AL |
939 | hdr->flags &= ~VIRTIO_NET_HDR_F_NEEDS_CSUM; |
940 | } | |
941 | } | |
942 | ||
280598b7 MT |
943 | static void receive_header(VirtIONet *n, const struct iovec *iov, int iov_cnt, |
944 | const void *buf, size_t size) | |
fbe78f4f | 945 | { |
3a330134 | 946 | if (n->has_vnet_hdr) { |
22cc84db MT |
947 | /* FIXME this cast is evil */ |
948 | void *wbuf = (void *)buf; | |
280598b7 MT |
949 | work_around_broken_dhclient(wbuf, wbuf + n->host_hdr_len, |
950 | size - n->host_hdr_len); | |
1399c60d | 951 | virtio_net_hdr_swap(VIRTIO_DEVICE(n), wbuf); |
280598b7 | 952 | iov_from_buf(iov, iov_cnt, 0, buf, sizeof(struct virtio_net_hdr)); |
22cc84db MT |
953 | } else { |
954 | struct virtio_net_hdr hdr = { | |
955 | .flags = 0, | |
956 | .gso_type = VIRTIO_NET_HDR_GSO_NONE | |
957 | }; | |
958 | iov_from_buf(iov, iov_cnt, 0, &hdr, sizeof hdr); | |
3a330134 | 959 | } |
fbe78f4f AL |
960 | } |
961 | ||
3831ab20 AL |
962 | static int receive_filter(VirtIONet *n, const uint8_t *buf, int size) |
963 | { | |
964 | static const uint8_t bcast[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; | |
f21c0ed9 | 965 | static const uint8_t vlan[] = {0x81, 0x00}; |
3831ab20 | 966 | uint8_t *ptr = (uint8_t *)buf; |
b6503ed9 | 967 | int i; |
3831ab20 AL |
968 | |
969 | if (n->promisc) | |
970 | return 1; | |
971 | ||
e043ebc6 | 972 | ptr += n->host_hdr_len; |
3a330134 | 973 | |
f21c0ed9 AL |
974 | if (!memcmp(&ptr[12], vlan, sizeof(vlan))) { |
975 | int vid = be16_to_cpup((uint16_t *)(ptr + 14)) & 0xfff; | |
976 | if (!(n->vlans[vid >> 5] & (1U << (vid & 0x1f)))) | |
977 | return 0; | |
978 | } | |
979 | ||
bbe2f399 AW |
980 | if (ptr[0] & 1) { // multicast |
981 | if (!memcmp(ptr, bcast, sizeof(bcast))) { | |
015cb166 AW |
982 | return !n->nobcast; |
983 | } else if (n->nomulti) { | |
984 | return 0; | |
8fd2a2f1 | 985 | } else if (n->allmulti || n->mac_table.multi_overflow) { |
bbe2f399 AW |
986 | return 1; |
987 | } | |
2d9aba39 AW |
988 | |
989 | for (i = n->mac_table.first_multi; i < n->mac_table.in_use; i++) { | |
990 | if (!memcmp(ptr, &n->mac_table.macs[i * ETH_ALEN], ETH_ALEN)) { | |
991 | return 1; | |
992 | } | |
993 | } | |
bbe2f399 | 994 | } else { // unicast |
015cb166 AW |
995 | if (n->nouni) { |
996 | return 0; | |
997 | } else if (n->alluni || n->mac_table.uni_overflow) { | |
8fd2a2f1 AW |
998 | return 1; |
999 | } else if (!memcmp(ptr, n->mac, ETH_ALEN)) { | |
bbe2f399 AW |
1000 | return 1; |
1001 | } | |
3831ab20 | 1002 | |
2d9aba39 AW |
1003 | for (i = 0; i < n->mac_table.first_multi; i++) { |
1004 | if (!memcmp(ptr, &n->mac_table.macs[i * ETH_ALEN], ETH_ALEN)) { | |
1005 | return 1; | |
1006 | } | |
1007 | } | |
b6503ed9 AL |
1008 | } |
1009 | ||
3831ab20 AL |
1010 | return 0; |
1011 | } | |
1012 | ||
4e68f7a0 | 1013 | static ssize_t virtio_net_receive(NetClientState *nc, const uint8_t *buf, size_t size) |
fbe78f4f | 1014 | { |
cc1f0f45 | 1015 | VirtIONet *n = qemu_get_nic_opaque(nc); |
fed699f9 | 1016 | VirtIONetQueue *q = virtio_net_get_subqueue(nc); |
17a0ca55 | 1017 | VirtIODevice *vdev = VIRTIO_DEVICE(n); |
63c58728 MT |
1018 | struct iovec mhdr_sg[VIRTQUEUE_MAX_SIZE]; |
1019 | struct virtio_net_hdr_mrg_rxbuf mhdr; | |
1020 | unsigned mhdr_cnt = 0; | |
22cc84db | 1021 | size_t offset, i, guest_offset; |
fbe78f4f | 1022 | |
fed699f9 | 1023 | if (!virtio_net_can_receive(nc)) { |
cdd5cc12 | 1024 | return -1; |
b356f76d | 1025 | } |
cdd5cc12 | 1026 | |
940cda94 | 1027 | /* hdr_len refers to the header we supply to the guest */ |
0c87e93e | 1028 | if (!virtio_net_has_buffers(q, size + n->guest_hdr_len - n->host_hdr_len)) { |
8aeff62d | 1029 | return 0; |
0c87e93e | 1030 | } |
fbe78f4f | 1031 | |
3831ab20 | 1032 | if (!receive_filter(n, buf, size)) |
4f1c942b | 1033 | return size; |
3831ab20 | 1034 | |
fbe78f4f AL |
1035 | offset = i = 0; |
1036 | ||
1037 | while (offset < size) { | |
1038 | VirtQueueElement elem; | |
1039 | int len, total; | |
22cc84db | 1040 | const struct iovec *sg = elem.in_sg; |
fbe78f4f | 1041 | |
22c253d9 | 1042 | total = 0; |
fbe78f4f | 1043 | |
0c87e93e | 1044 | if (virtqueue_pop(q->rx_vq, &elem) == 0) { |
fbe78f4f | 1045 | if (i == 0) |
4f1c942b | 1046 | return -1; |
e7b43f7e | 1047 | error_report("virtio-net unexpected empty queue: " |
019a3edb GH |
1048 | "i %zd mergeable %d offset %zd, size %zd, " |
1049 | "guest hdr len %zd, host hdr len %zd " | |
1050 | "guest features 0x%" PRIx64, | |
1051 | i, n->mergeable_rx_bufs, offset, size, | |
1052 | n->guest_hdr_len, n->host_hdr_len, | |
1053 | vdev->guest_features); | |
fbe78f4f AL |
1054 | exit(1); |
1055 | } | |
1056 | ||
1057 | if (elem.in_num < 1) { | |
e7b43f7e | 1058 | error_report("virtio-net receive queue contains no in buffers"); |
fbe78f4f AL |
1059 | exit(1); |
1060 | } | |
1061 | ||
fbe78f4f | 1062 | if (i == 0) { |
c8d28e7e | 1063 | assert(offset == 0); |
63c58728 MT |
1064 | if (n->mergeable_rx_bufs) { |
1065 | mhdr_cnt = iov_copy(mhdr_sg, ARRAY_SIZE(mhdr_sg), | |
1066 | sg, elem.in_num, | |
1067 | offsetof(typeof(mhdr), num_buffers), | |
1068 | sizeof(mhdr.num_buffers)); | |
1069 | } | |
fbe78f4f | 1070 | |
c8d28e7e MT |
1071 | receive_header(n, sg, elem.in_num, buf, size); |
1072 | offset = n->host_hdr_len; | |
e35e23f6 | 1073 | total += n->guest_hdr_len; |
22cc84db MT |
1074 | guest_offset = n->guest_hdr_len; |
1075 | } else { | |
1076 | guest_offset = 0; | |
fbe78f4f AL |
1077 | } |
1078 | ||
1079 | /* copy in packet. ugh */ | |
22cc84db | 1080 | len = iov_from_buf(sg, elem.in_num, guest_offset, |
dcf6f5e1 | 1081 | buf + offset, size - offset); |
fbe78f4f | 1082 | total += len; |
279a4253 MT |
1083 | offset += len; |
1084 | /* If buffers can't be merged, at this point we | |
1085 | * must have consumed the complete packet. | |
1086 | * Otherwise, drop it. */ | |
1087 | if (!n->mergeable_rx_bufs && offset < size) { | |
1088 | #if 0 | |
e7b43f7e SH |
1089 | error_report("virtio-net truncated non-mergeable packet: " |
1090 | "i %zd mergeable %d offset %zd, size %zd, " | |
1091 | "guest hdr len %zd, host hdr len %zd", | |
1092 | i, n->mergeable_rx_bufs, | |
e35e23f6 | 1093 | offset, size, n->guest_hdr_len, n->host_hdr_len); |
279a4253 MT |
1094 | #endif |
1095 | return size; | |
1096 | } | |
fbe78f4f AL |
1097 | |
1098 | /* signal other side */ | |
0c87e93e | 1099 | virtqueue_fill(q->rx_vq, &elem, total, i++); |
fbe78f4f AL |
1100 | } |
1101 | ||
63c58728 | 1102 | if (mhdr_cnt) { |
1399c60d | 1103 | virtio_stw_p(vdev, &mhdr.num_buffers, i); |
63c58728 MT |
1104 | iov_from_buf(mhdr_sg, mhdr_cnt, |
1105 | 0, | |
1106 | &mhdr.num_buffers, sizeof mhdr.num_buffers); | |
44b15bc5 | 1107 | } |
fbe78f4f | 1108 | |
0c87e93e | 1109 | virtqueue_flush(q->rx_vq, i); |
17a0ca55 | 1110 | virtio_notify(vdev, q->rx_vq); |
4f1c942b MM |
1111 | |
1112 | return size; | |
fbe78f4f AL |
1113 | } |
1114 | ||
0c87e93e | 1115 | static int32_t virtio_net_flush_tx(VirtIONetQueue *q); |
6243375f | 1116 | |
4e68f7a0 | 1117 | static void virtio_net_tx_complete(NetClientState *nc, ssize_t len) |
6243375f | 1118 | { |
cc1f0f45 | 1119 | VirtIONet *n = qemu_get_nic_opaque(nc); |
fed699f9 | 1120 | VirtIONetQueue *q = virtio_net_get_subqueue(nc); |
17a0ca55 | 1121 | VirtIODevice *vdev = VIRTIO_DEVICE(n); |
6243375f | 1122 | |
0c87e93e | 1123 | virtqueue_push(q->tx_vq, &q->async_tx.elem, 0); |
17a0ca55 | 1124 | virtio_notify(vdev, q->tx_vq); |
6243375f | 1125 | |
0c87e93e | 1126 | q->async_tx.elem.out_num = q->async_tx.len = 0; |
6243375f | 1127 | |
0c87e93e JW |
1128 | virtio_queue_set_notification(q->tx_vq, 1); |
1129 | virtio_net_flush_tx(q); | |
6243375f MM |
1130 | } |
1131 | ||
fbe78f4f | 1132 | /* TX */ |
0c87e93e | 1133 | static int32_t virtio_net_flush_tx(VirtIONetQueue *q) |
fbe78f4f | 1134 | { |
0c87e93e | 1135 | VirtIONet *n = q->n; |
17a0ca55 | 1136 | VirtIODevice *vdev = VIRTIO_DEVICE(n); |
fbe78f4f | 1137 | VirtQueueElement elem; |
e3f30488 | 1138 | int32_t num_packets = 0; |
fed699f9 | 1139 | int queue_index = vq2q(virtio_get_queue_index(q->tx_vq)); |
17a0ca55 | 1140 | if (!(vdev->status & VIRTIO_CONFIG_S_DRIVER_OK)) { |
e3f30488 AW |
1141 | return num_packets; |
1142 | } | |
fbe78f4f | 1143 | |
0c87e93e JW |
1144 | if (q->async_tx.elem.out_num) { |
1145 | virtio_queue_set_notification(q->tx_vq, 0); | |
e3f30488 | 1146 | return num_packets; |
6243375f MM |
1147 | } |
1148 | ||
0c87e93e | 1149 | while (virtqueue_pop(q->tx_vq, &elem)) { |
14761f9c | 1150 | ssize_t ret, len; |
fbe78f4f AL |
1151 | unsigned int out_num = elem.out_num; |
1152 | struct iovec *out_sg = &elem.out_sg[0]; | |
feb93f36 JW |
1153 | struct iovec sg[VIRTQUEUE_MAX_SIZE], sg2[VIRTQUEUE_MAX_SIZE + 1]; |
1154 | struct virtio_net_hdr_mrg_rxbuf mhdr; | |
fbe78f4f | 1155 | |
7b80d08e | 1156 | if (out_num < 1) { |
e7b43f7e | 1157 | error_report("virtio-net header not in first element"); |
fbe78f4f AL |
1158 | exit(1); |
1159 | } | |
1160 | ||
032a74a1 | 1161 | if (n->has_vnet_hdr) { |
feb93f36 JW |
1162 | if (iov_to_buf(out_sg, out_num, 0, &mhdr, n->guest_hdr_len) < |
1163 | n->guest_hdr_len) { | |
032a74a1 CLG |
1164 | error_report("virtio-net header incorrect"); |
1165 | exit(1); | |
1166 | } | |
feb93f36 JW |
1167 | if (virtio_needs_swap(vdev)) { |
1168 | virtio_net_hdr_swap(vdev, (void *) &mhdr); | |
1169 | sg2[0].iov_base = &mhdr; | |
1170 | sg2[0].iov_len = n->guest_hdr_len; | |
1171 | out_num = iov_copy(&sg2[1], ARRAY_SIZE(sg2) - 1, | |
1172 | out_sg, out_num, | |
1173 | n->guest_hdr_len, -1); | |
1174 | if (out_num == VIRTQUEUE_MAX_SIZE) { | |
1175 | goto drop; | |
1176 | } | |
1177 | out_num += 1; | |
1178 | out_sg = sg2; | |
1179 | } | |
032a74a1 | 1180 | } |
14761f9c MT |
1181 | /* |
1182 | * If host wants to see the guest header as is, we can | |
1183 | * pass it on unchanged. Otherwise, copy just the parts | |
1184 | * that host is interested in. | |
1185 | */ | |
1186 | assert(n->host_hdr_len <= n->guest_hdr_len); | |
1187 | if (n->host_hdr_len != n->guest_hdr_len) { | |
1188 | unsigned sg_num = iov_copy(sg, ARRAY_SIZE(sg), | |
1189 | out_sg, out_num, | |
1190 | 0, n->host_hdr_len); | |
1191 | sg_num += iov_copy(sg + sg_num, ARRAY_SIZE(sg) - sg_num, | |
1192 | out_sg, out_num, | |
1193 | n->guest_hdr_len, -1); | |
1194 | out_num = sg_num; | |
1195 | out_sg = sg; | |
fbe78f4f AL |
1196 | } |
1197 | ||
7b80d08e | 1198 | len = n->guest_hdr_len; |
14761f9c | 1199 | |
fed699f9 JW |
1200 | ret = qemu_sendv_packet_async(qemu_get_subqueue(n->nic, queue_index), |
1201 | out_sg, out_num, virtio_net_tx_complete); | |
6243375f | 1202 | if (ret == 0) { |
0c87e93e JW |
1203 | virtio_queue_set_notification(q->tx_vq, 0); |
1204 | q->async_tx.elem = elem; | |
1205 | q->async_tx.len = len; | |
e3f30488 | 1206 | return -EBUSY; |
6243375f MM |
1207 | } |
1208 | ||
1209 | len += ret; | |
feb93f36 | 1210 | drop: |
0c87e93e | 1211 | virtqueue_push(q->tx_vq, &elem, 0); |
17a0ca55 | 1212 | virtio_notify(vdev, q->tx_vq); |
e3f30488 AW |
1213 | |
1214 | if (++num_packets >= n->tx_burst) { | |
1215 | break; | |
1216 | } | |
fbe78f4f | 1217 | } |
e3f30488 | 1218 | return num_packets; |
fbe78f4f AL |
1219 | } |
1220 | ||
a697a334 | 1221 | static void virtio_net_handle_tx_timer(VirtIODevice *vdev, VirtQueue *vq) |
fbe78f4f | 1222 | { |
17a0ca55 | 1223 | VirtIONet *n = VIRTIO_NET(vdev); |
fed699f9 | 1224 | VirtIONetQueue *q = &n->vqs[vq2q(virtio_get_queue_index(vq))]; |
fbe78f4f | 1225 | |
783e7706 | 1226 | /* This happens when device was stopped but VCPU wasn't. */ |
17a0ca55 | 1227 | if (!vdev->vm_running) { |
0c87e93e | 1228 | q->tx_waiting = 1; |
783e7706 MT |
1229 | return; |
1230 | } | |
1231 | ||
0c87e93e | 1232 | if (q->tx_waiting) { |
fbe78f4f | 1233 | virtio_queue_set_notification(vq, 1); |
bc72ad67 | 1234 | timer_del(q->tx_timer); |
0c87e93e JW |
1235 | q->tx_waiting = 0; |
1236 | virtio_net_flush_tx(q); | |
fbe78f4f | 1237 | } else { |
bc72ad67 AB |
1238 | timer_mod(q->tx_timer, |
1239 | qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + n->tx_timeout); | |
0c87e93e | 1240 | q->tx_waiting = 1; |
fbe78f4f AL |
1241 | virtio_queue_set_notification(vq, 0); |
1242 | } | |
1243 | } | |
1244 | ||
a697a334 AW |
1245 | static void virtio_net_handle_tx_bh(VirtIODevice *vdev, VirtQueue *vq) |
1246 | { | |
17a0ca55 | 1247 | VirtIONet *n = VIRTIO_NET(vdev); |
fed699f9 | 1248 | VirtIONetQueue *q = &n->vqs[vq2q(virtio_get_queue_index(vq))]; |
a697a334 | 1249 | |
0c87e93e | 1250 | if (unlikely(q->tx_waiting)) { |
a697a334 AW |
1251 | return; |
1252 | } | |
0c87e93e | 1253 | q->tx_waiting = 1; |
783e7706 | 1254 | /* This happens when device was stopped but VCPU wasn't. */ |
17a0ca55 | 1255 | if (!vdev->vm_running) { |
783e7706 MT |
1256 | return; |
1257 | } | |
a697a334 | 1258 | virtio_queue_set_notification(vq, 0); |
0c87e93e | 1259 | qemu_bh_schedule(q->tx_bh); |
a697a334 AW |
1260 | } |
1261 | ||
fbe78f4f AL |
1262 | static void virtio_net_tx_timer(void *opaque) |
1263 | { | |
0c87e93e JW |
1264 | VirtIONetQueue *q = opaque; |
1265 | VirtIONet *n = q->n; | |
17a0ca55 | 1266 | VirtIODevice *vdev = VIRTIO_DEVICE(n); |
e8bcf842 MT |
1267 | /* This happens when device was stopped but BH wasn't. */ |
1268 | if (!vdev->vm_running) { | |
1269 | /* Make sure tx waiting is set, so we'll run when restarted. */ | |
1270 | assert(q->tx_waiting); | |
1271 | return; | |
1272 | } | |
fbe78f4f | 1273 | |
0c87e93e | 1274 | q->tx_waiting = 0; |
fbe78f4f AL |
1275 | |
1276 | /* Just in case the driver is not ready on more */ | |
17a0ca55 | 1277 | if (!(vdev->status & VIRTIO_CONFIG_S_DRIVER_OK)) { |
fbe78f4f | 1278 | return; |
17a0ca55 | 1279 | } |
fbe78f4f | 1280 | |
0c87e93e JW |
1281 | virtio_queue_set_notification(q->tx_vq, 1); |
1282 | virtio_net_flush_tx(q); | |
fbe78f4f AL |
1283 | } |
1284 | ||
a697a334 AW |
1285 | static void virtio_net_tx_bh(void *opaque) |
1286 | { | |
0c87e93e JW |
1287 | VirtIONetQueue *q = opaque; |
1288 | VirtIONet *n = q->n; | |
17a0ca55 | 1289 | VirtIODevice *vdev = VIRTIO_DEVICE(n); |
a697a334 AW |
1290 | int32_t ret; |
1291 | ||
e8bcf842 MT |
1292 | /* This happens when device was stopped but BH wasn't. */ |
1293 | if (!vdev->vm_running) { | |
1294 | /* Make sure tx waiting is set, so we'll run when restarted. */ | |
1295 | assert(q->tx_waiting); | |
1296 | return; | |
1297 | } | |
783e7706 | 1298 | |
0c87e93e | 1299 | q->tx_waiting = 0; |
a697a334 AW |
1300 | |
1301 | /* Just in case the driver is not ready on more */ | |
17a0ca55 | 1302 | if (unlikely(!(vdev->status & VIRTIO_CONFIG_S_DRIVER_OK))) { |
a697a334 | 1303 | return; |
17a0ca55 | 1304 | } |
a697a334 | 1305 | |
0c87e93e | 1306 | ret = virtio_net_flush_tx(q); |
a697a334 AW |
1307 | if (ret == -EBUSY) { |
1308 | return; /* Notification re-enable handled by tx_complete */ | |
1309 | } | |
1310 | ||
1311 | /* If we flush a full burst of packets, assume there are | |
1312 | * more coming and immediately reschedule */ | |
1313 | if (ret >= n->tx_burst) { | |
0c87e93e JW |
1314 | qemu_bh_schedule(q->tx_bh); |
1315 | q->tx_waiting = 1; | |
a697a334 AW |
1316 | return; |
1317 | } | |
1318 | ||
1319 | /* If less than a full burst, re-enable notification and flush | |
1320 | * anything that may have come in while we weren't looking. If | |
1321 | * we find something, assume the guest is still active and reschedule */ | |
0c87e93e JW |
1322 | virtio_queue_set_notification(q->tx_vq, 1); |
1323 | if (virtio_net_flush_tx(q) > 0) { | |
1324 | virtio_queue_set_notification(q->tx_vq, 0); | |
1325 | qemu_bh_schedule(q->tx_bh); | |
1326 | q->tx_waiting = 1; | |
a697a334 AW |
1327 | } |
1328 | } | |
1329 | ||
f9d6dbf0 WC |
1330 | static void virtio_net_add_queue(VirtIONet *n, int index) |
1331 | { | |
1332 | VirtIODevice *vdev = VIRTIO_DEVICE(n); | |
1333 | ||
1334 | n->vqs[index].rx_vq = virtio_add_queue(vdev, 256, virtio_net_handle_rx); | |
1335 | if (n->net_conf.tx && !strcmp(n->net_conf.tx, "timer")) { | |
1336 | n->vqs[index].tx_vq = | |
1337 | virtio_add_queue(vdev, 256, virtio_net_handle_tx_timer); | |
1338 | n->vqs[index].tx_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, | |
1339 | virtio_net_tx_timer, | |
1340 | &n->vqs[index]); | |
1341 | } else { | |
1342 | n->vqs[index].tx_vq = | |
1343 | virtio_add_queue(vdev, 256, virtio_net_handle_tx_bh); | |
1344 | n->vqs[index].tx_bh = qemu_bh_new(virtio_net_tx_bh, &n->vqs[index]); | |
1345 | } | |
1346 | ||
1347 | n->vqs[index].tx_waiting = 0; | |
1348 | n->vqs[index].n = n; | |
1349 | } | |
1350 | ||
1351 | static void virtio_net_del_queue(VirtIONet *n, int index) | |
1352 | { | |
1353 | VirtIODevice *vdev = VIRTIO_DEVICE(n); | |
1354 | VirtIONetQueue *q = &n->vqs[index]; | |
1355 | NetClientState *nc = qemu_get_subqueue(n->nic, index); | |
1356 | ||
1357 | qemu_purge_queued_packets(nc); | |
1358 | ||
1359 | virtio_del_queue(vdev, index * 2); | |
1360 | if (q->tx_timer) { | |
1361 | timer_del(q->tx_timer); | |
1362 | timer_free(q->tx_timer); | |
1363 | } else { | |
1364 | qemu_bh_delete(q->tx_bh); | |
1365 | } | |
1366 | virtio_del_queue(vdev, index * 2 + 1); | |
1367 | } | |
1368 | ||
1369 | static void virtio_net_change_num_queues(VirtIONet *n, int new_max_queues) | |
1370 | { | |
1371 | VirtIODevice *vdev = VIRTIO_DEVICE(n); | |
1372 | int old_num_queues = virtio_get_num_queues(vdev); | |
1373 | int new_num_queues = new_max_queues * 2 + 1; | |
1374 | int i; | |
1375 | ||
1376 | assert(old_num_queues >= 3); | |
1377 | assert(old_num_queues % 2 == 1); | |
1378 | ||
1379 | if (old_num_queues == new_num_queues) { | |
1380 | return; | |
1381 | } | |
1382 | ||
1383 | /* | |
1384 | * We always need to remove and add ctrl vq if | |
1385 | * old_num_queues != new_num_queues. Remove ctrl_vq first, | |
1386 | * and then we only enter one of the following too loops. | |
1387 | */ | |
1388 | virtio_del_queue(vdev, old_num_queues - 1); | |
1389 | ||
1390 | for (i = new_num_queues - 1; i < old_num_queues - 1; i += 2) { | |
1391 | /* new_num_queues < old_num_queues */ | |
1392 | virtio_net_del_queue(n, i / 2); | |
1393 | } | |
1394 | ||
1395 | for (i = old_num_queues - 1; i < new_num_queues - 1; i += 2) { | |
1396 | /* new_num_queues > old_num_queues */ | |
1397 | virtio_net_add_queue(n, i / 2); | |
1398 | } | |
1399 | ||
1400 | /* add ctrl_vq last */ | |
1401 | n->ctrl_vq = virtio_add_queue(vdev, 64, virtio_net_handle_ctrl); | |
1402 | } | |
1403 | ||
ec57db16 | 1404 | static void virtio_net_set_multiqueue(VirtIONet *n, int multiqueue) |
fed699f9 | 1405 | { |
f9d6dbf0 WC |
1406 | int max = multiqueue ? n->max_queues : 1; |
1407 | ||
fed699f9 | 1408 | n->multiqueue = multiqueue; |
f9d6dbf0 | 1409 | virtio_net_change_num_queues(n, max); |
fed699f9 | 1410 | |
fed699f9 JW |
1411 | virtio_net_set_queues(n); |
1412 | } | |
1413 | ||
fbe78f4f AL |
1414 | static void virtio_net_save(QEMUFile *f, void *opaque) |
1415 | { | |
1416 | VirtIONet *n = opaque; | |
17a0ca55 | 1417 | VirtIODevice *vdev = VIRTIO_DEVICE(n); |
fbe78f4f | 1418 | |
afbaa7b4 MT |
1419 | /* At this point, backend must be stopped, otherwise |
1420 | * it might keep writing to memory. */ | |
1421 | assert(!n->vhost_started); | |
17a0ca55 | 1422 | virtio_save(vdev, f); |
037dab2f GK |
1423 | } |
1424 | ||
1425 | static void virtio_net_save_device(VirtIODevice *vdev, QEMUFile *f) | |
1426 | { | |
1427 | VirtIONet *n = VIRTIO_NET(vdev); | |
1428 | int i; | |
fbe78f4f | 1429 | |
79674068 | 1430 | qemu_put_buffer(f, n->mac, ETH_ALEN); |
5f800801 | 1431 | qemu_put_be32(f, n->vqs[0].tx_waiting); |
e46cb38f | 1432 | qemu_put_be32(f, n->mergeable_rx_bufs); |
9d6271b8 | 1433 | qemu_put_be16(f, n->status); |
f10c592e AW |
1434 | qemu_put_byte(f, n->promisc); |
1435 | qemu_put_byte(f, n->allmulti); | |
b6503ed9 AL |
1436 | qemu_put_be32(f, n->mac_table.in_use); |
1437 | qemu_put_buffer(f, n->mac_table.macs, n->mac_table.in_use * ETH_ALEN); | |
f21c0ed9 | 1438 | qemu_put_buffer(f, (uint8_t *)n->vlans, MAX_VLAN >> 3); |
3a330134 | 1439 | qemu_put_be32(f, n->has_vnet_hdr); |
8fd2a2f1 AW |
1440 | qemu_put_byte(f, n->mac_table.multi_overflow); |
1441 | qemu_put_byte(f, n->mac_table.uni_overflow); | |
015cb166 AW |
1442 | qemu_put_byte(f, n->alluni); |
1443 | qemu_put_byte(f, n->nomulti); | |
1444 | qemu_put_byte(f, n->nouni); | |
1445 | qemu_put_byte(f, n->nobcast); | |
0ce0e8f4 | 1446 | qemu_put_byte(f, n->has_ufo); |
5f800801 JW |
1447 | if (n->max_queues > 1) { |
1448 | qemu_put_be16(f, n->max_queues); | |
1449 | qemu_put_be16(f, n->curr_queues); | |
1450 | for (i = 1; i < n->curr_queues; i++) { | |
1451 | qemu_put_be32(f, n->vqs[i].tx_waiting); | |
1452 | } | |
1453 | } | |
644c9858 | 1454 | |
ef546f12 | 1455 | if (virtio_has_feature(vdev, VIRTIO_NET_F_CTRL_GUEST_OFFLOADS)) { |
644c9858 DF |
1456 | qemu_put_be64(f, n->curr_guest_offloads); |
1457 | } | |
fbe78f4f AL |
1458 | } |
1459 | ||
1460 | static int virtio_net_load(QEMUFile *f, void *opaque, int version_id) | |
1461 | { | |
1462 | VirtIONet *n = opaque; | |
17a0ca55 | 1463 | VirtIODevice *vdev = VIRTIO_DEVICE(n); |
fbe78f4f | 1464 | |
9d6271b8 | 1465 | if (version_id < 2 || version_id > VIRTIO_NET_VM_VERSION) |
fbe78f4f AL |
1466 | return -EINVAL; |
1467 | ||
037dab2f GK |
1468 | return virtio_load(vdev, f, version_id); |
1469 | } | |
1470 | ||
1471 | static int virtio_net_load_device(VirtIODevice *vdev, QEMUFile *f, | |
1472 | int version_id) | |
1473 | { | |
1474 | VirtIONet *n = VIRTIO_NET(vdev); | |
1475 | int i, link_down; | |
fbe78f4f | 1476 | |
79674068 | 1477 | qemu_get_buffer(f, n->mac, ETH_ALEN); |
5f800801 | 1478 | n->vqs[0].tx_waiting = qemu_get_be32(f); |
ff3a8066 | 1479 | |
bb9d17f8 CH |
1480 | virtio_net_set_mrg_rx_bufs(n, qemu_get_be32(f), |
1481 | virtio_has_feature(vdev, VIRTIO_F_VERSION_1)); | |
fbe78f4f | 1482 | |
9d6271b8 AL |
1483 | if (version_id >= 3) |
1484 | n->status = qemu_get_be16(f); | |
1485 | ||
002437cd | 1486 | if (version_id >= 4) { |
f10c592e AW |
1487 | if (version_id < 8) { |
1488 | n->promisc = qemu_get_be32(f); | |
1489 | n->allmulti = qemu_get_be32(f); | |
1490 | } else { | |
1491 | n->promisc = qemu_get_byte(f); | |
1492 | n->allmulti = qemu_get_byte(f); | |
1493 | } | |
002437cd AL |
1494 | } |
1495 | ||
b6503ed9 AL |
1496 | if (version_id >= 5) { |
1497 | n->mac_table.in_use = qemu_get_be32(f); | |
1498 | /* MAC_TABLE_ENTRIES may be different from the saved image */ | |
1499 | if (n->mac_table.in_use <= MAC_TABLE_ENTRIES) { | |
1500 | qemu_get_buffer(f, n->mac_table.macs, | |
1501 | n->mac_table.in_use * ETH_ALEN); | |
98f93ddd MT |
1502 | } else { |
1503 | int64_t i; | |
1504 | ||
1505 | /* Overflow detected - can happen if source has a larger MAC table. | |
1506 | * We simply set overflow flag so there's no need to maintain the | |
1507 | * table of addresses, discard them all. | |
1508 | * Note: 64 bit math to avoid integer overflow. | |
1509 | */ | |
1510 | for (i = 0; i < (int64_t)n->mac_table.in_use * ETH_ALEN; ++i) { | |
1511 | qemu_get_byte(f); | |
1512 | } | |
8fd2a2f1 | 1513 | n->mac_table.multi_overflow = n->mac_table.uni_overflow = 1; |
b6503ed9 AL |
1514 | n->mac_table.in_use = 0; |
1515 | } | |
1516 | } | |
1517 | ||
f21c0ed9 AL |
1518 | if (version_id >= 6) |
1519 | qemu_get_buffer(f, (uint8_t *)n->vlans, MAX_VLAN >> 3); | |
1520 | ||
3a330134 MM |
1521 | if (version_id >= 7) { |
1522 | if (qemu_get_be32(f) && !peer_has_vnet_hdr(n)) { | |
1ecda02b | 1523 | error_report("virtio-net: saved image requires vnet_hdr=on"); |
3a330134 MM |
1524 | return -1; |
1525 | } | |
6c042c16 AW |
1526 | } |
1527 | ||
8fd2a2f1 AW |
1528 | if (version_id >= 9) { |
1529 | n->mac_table.multi_overflow = qemu_get_byte(f); | |
1530 | n->mac_table.uni_overflow = qemu_get_byte(f); | |
1531 | } | |
1532 | ||
015cb166 AW |
1533 | if (version_id >= 10) { |
1534 | n->alluni = qemu_get_byte(f); | |
1535 | n->nomulti = qemu_get_byte(f); | |
1536 | n->nouni = qemu_get_byte(f); | |
1537 | n->nobcast = qemu_get_byte(f); | |
1538 | } | |
1539 | ||
0ce0e8f4 MM |
1540 | if (version_id >= 11) { |
1541 | if (qemu_get_byte(f) && !peer_has_ufo(n)) { | |
1ecda02b | 1542 | error_report("virtio-net: saved image requires TUN_F_UFO support"); |
0ce0e8f4 MM |
1543 | return -1; |
1544 | } | |
1545 | } | |
1546 | ||
5f800801 JW |
1547 | if (n->max_queues > 1) { |
1548 | if (n->max_queues != qemu_get_be16(f)) { | |
1549 | error_report("virtio-net: different max_queues "); | |
1550 | return -1; | |
1551 | } | |
1552 | ||
1553 | n->curr_queues = qemu_get_be16(f); | |
eea750a5 MT |
1554 | if (n->curr_queues > n->max_queues) { |
1555 | error_report("virtio-net: curr_queues %x > max_queues %x", | |
1556 | n->curr_queues, n->max_queues); | |
1557 | return -1; | |
1558 | } | |
5f800801 JW |
1559 | for (i = 1; i < n->curr_queues; i++) { |
1560 | n->vqs[i].tx_waiting = qemu_get_be32(f); | |
1561 | } | |
1562 | } | |
1563 | ||
ef546f12 | 1564 | if (virtio_has_feature(vdev, VIRTIO_NET_F_CTRL_GUEST_OFFLOADS)) { |
644c9858 DF |
1565 | n->curr_guest_offloads = qemu_get_be64(f); |
1566 | } else { | |
1567 | n->curr_guest_offloads = virtio_net_supported_guest_offloads(n); | |
1568 | } | |
1569 | ||
1570 | if (peer_has_vnet_hdr(n)) { | |
1571 | virtio_net_apply_guest_offloads(n); | |
1572 | } | |
1573 | ||
5f800801 JW |
1574 | virtio_net_set_queues(n); |
1575 | ||
2d9aba39 AW |
1576 | /* Find the first multicast entry in the saved MAC filter */ |
1577 | for (i = 0; i < n->mac_table.in_use; i++) { | |
1578 | if (n->mac_table.macs[i * ETH_ALEN] & 1) { | |
1579 | break; | |
1580 | } | |
1581 | } | |
1582 | n->mac_table.first_multi = i; | |
98991481 AK |
1583 | |
1584 | /* nc.link_down can't be migrated, so infer link_down according | |
1585 | * to link status bit in n->status */ | |
5f800801 JW |
1586 | link_down = (n->status & VIRTIO_NET_S_LINK_UP) == 0; |
1587 | for (i = 0; i < n->max_queues; i++) { | |
1588 | qemu_get_subqueue(n->nic, i)->link_down = link_down; | |
1589 | } | |
98991481 | 1590 | |
ef546f12 CH |
1591 | if (virtio_has_feature(vdev, VIRTIO_NET_F_GUEST_ANNOUNCE) && |
1592 | virtio_has_feature(vdev, VIRTIO_NET_F_CTRL_VQ)) { | |
f57fcf70 JW |
1593 | n->announce_counter = SELF_ANNOUNCE_ROUNDS; |
1594 | timer_mod(n->announce_timer, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL)); | |
1595 | } | |
1596 | ||
fbe78f4f AL |
1597 | return 0; |
1598 | } | |
1599 | ||
eb6b6c12 | 1600 | static NetClientInfo net_virtio_info = { |
2be64a68 | 1601 | .type = NET_CLIENT_OPTIONS_KIND_NIC, |
eb6b6c12 MM |
1602 | .size = sizeof(NICState), |
1603 | .can_receive = virtio_net_can_receive, | |
1604 | .receive = virtio_net_receive, | |
eb6b6c12 | 1605 | .link_status_changed = virtio_net_set_link_status, |
b1be4280 | 1606 | .query_rx_filter = virtio_net_query_rxfilter, |
eb6b6c12 MM |
1607 | }; |
1608 | ||
f56a1247 MT |
1609 | static bool virtio_net_guest_notifier_pending(VirtIODevice *vdev, int idx) |
1610 | { | |
17a0ca55 | 1611 | VirtIONet *n = VIRTIO_NET(vdev); |
fed699f9 | 1612 | NetClientState *nc = qemu_get_subqueue(n->nic, vq2q(idx)); |
f56a1247 | 1613 | assert(n->vhost_started); |
ed8b4afe | 1614 | return vhost_net_virtqueue_pending(get_vhost_net(nc->peer), idx); |
f56a1247 MT |
1615 | } |
1616 | ||
1617 | static void virtio_net_guest_notifier_mask(VirtIODevice *vdev, int idx, | |
1618 | bool mask) | |
1619 | { | |
17a0ca55 | 1620 | VirtIONet *n = VIRTIO_NET(vdev); |
fed699f9 | 1621 | NetClientState *nc = qemu_get_subqueue(n->nic, vq2q(idx)); |
f56a1247 | 1622 | assert(n->vhost_started); |
ed8b4afe | 1623 | vhost_net_virtqueue_mask(get_vhost_net(nc->peer), |
f56a1247 MT |
1624 | vdev, idx, mask); |
1625 | } | |
1626 | ||
019a3edb | 1627 | static void virtio_net_set_config_size(VirtIONet *n, uint64_t host_features) |
fbe78f4f | 1628 | { |
14f9b664 | 1629 | int i, config_size = 0; |
0cd09c3a | 1630 | virtio_add_feature(&host_features, VIRTIO_NET_F_MAC); |
14f9b664 JL |
1631 | for (i = 0; feature_sizes[i].flags != 0; i++) { |
1632 | if (host_features & feature_sizes[i].flags) { | |
1633 | config_size = MAX(feature_sizes[i].end, config_size); | |
1634 | } | |
1635 | } | |
17ec5a86 FK |
1636 | n->config_size = config_size; |
1637 | } | |
1638 | ||
8a253ec2 FK |
1639 | void virtio_net_set_netclient_name(VirtIONet *n, const char *name, |
1640 | const char *type) | |
1641 | { | |
1642 | /* | |
1643 | * The name can be NULL, the netclient name will be type.x. | |
1644 | */ | |
1645 | assert(type != NULL); | |
1646 | ||
9e288406 | 1647 | g_free(n->netclient_name); |
9e288406 | 1648 | g_free(n->netclient_type); |
80e0090a | 1649 | n->netclient_name = g_strdup(name); |
8a253ec2 FK |
1650 | n->netclient_type = g_strdup(type); |
1651 | } | |
1652 | ||
e6f746b3 | 1653 | static void virtio_net_device_realize(DeviceState *dev, Error **errp) |
17ec5a86 | 1654 | { |
e6f746b3 | 1655 | VirtIODevice *vdev = VIRTIO_DEVICE(dev); |
284a32f0 | 1656 | VirtIONet *n = VIRTIO_NET(dev); |
b1be4280 | 1657 | NetClientState *nc; |
284a32f0 | 1658 | int i; |
1773d9ee | 1659 | |
da3e8a23 | 1660 | virtio_net_set_config_size(n, n->host_features); |
284a32f0 | 1661 | virtio_init(vdev, "virtio-net", VIRTIO_ID_NET, n->config_size); |
fbe78f4f | 1662 | |
575a1c0e | 1663 | n->max_queues = MAX(n->nic_conf.peers.queues, 1); |
87b3bd1c | 1664 | if (n->max_queues * 2 + 1 > VIRTIO_QUEUE_MAX) { |
7e0e736e | 1665 | error_setg(errp, "Invalid number of queues (= %" PRIu32 "), " |
631b22ea | 1666 | "must be a positive integer less than %d.", |
87b3bd1c | 1667 | n->max_queues, (VIRTIO_QUEUE_MAX - 1) / 2); |
7e0e736e JW |
1668 | virtio_cleanup(vdev); |
1669 | return; | |
1670 | } | |
f6b26cf2 | 1671 | n->vqs = g_malloc0(sizeof(VirtIONetQueue) * n->max_queues); |
fed699f9 | 1672 | n->curr_queues = 1; |
1773d9ee | 1673 | n->tx_timeout = n->net_conf.txtimer; |
a697a334 | 1674 | |
1773d9ee FK |
1675 | if (n->net_conf.tx && strcmp(n->net_conf.tx, "timer") |
1676 | && strcmp(n->net_conf.tx, "bh")) { | |
e7b43f7e SH |
1677 | error_report("virtio-net: " |
1678 | "Unknown option tx=%s, valid options: \"timer\" \"bh\"", | |
1773d9ee | 1679 | n->net_conf.tx); |
e7b43f7e | 1680 | error_report("Defaulting to \"bh\""); |
a697a334 AW |
1681 | } |
1682 | ||
da51a335 | 1683 | for (i = 0; i < n->max_queues; i++) { |
f9d6dbf0 | 1684 | virtio_net_add_queue(n, i); |
a697a334 | 1685 | } |
da51a335 | 1686 | |
17a0ca55 | 1687 | n->ctrl_vq = virtio_add_queue(vdev, 64, virtio_net_handle_ctrl); |
1773d9ee FK |
1688 | qemu_macaddr_default_if_unset(&n->nic_conf.macaddr); |
1689 | memcpy(&n->mac[0], &n->nic_conf.macaddr, sizeof(n->mac)); | |
554c97dd | 1690 | n->status = VIRTIO_NET_S_LINK_UP; |
f57fcf70 JW |
1691 | n->announce_timer = timer_new_ms(QEMU_CLOCK_VIRTUAL, |
1692 | virtio_net_announce_timer, n); | |
fbe78f4f | 1693 | |
8a253ec2 FK |
1694 | if (n->netclient_type) { |
1695 | /* | |
1696 | * Happen when virtio_net_set_netclient_name has been called. | |
1697 | */ | |
1698 | n->nic = qemu_new_nic(&net_virtio_info, &n->nic_conf, | |
1699 | n->netclient_type, n->netclient_name, n); | |
1700 | } else { | |
1701 | n->nic = qemu_new_nic(&net_virtio_info, &n->nic_conf, | |
284a32f0 | 1702 | object_get_typename(OBJECT(dev)), dev->id, n); |
8a253ec2 FK |
1703 | } |
1704 | ||
6e371ab8 MT |
1705 | peer_test_vnet_hdr(n); |
1706 | if (peer_has_vnet_hdr(n)) { | |
fed699f9 | 1707 | for (i = 0; i < n->max_queues; i++) { |
d6085e3a | 1708 | qemu_using_vnet_hdr(qemu_get_subqueue(n->nic, i)->peer, true); |
fed699f9 | 1709 | } |
6e371ab8 MT |
1710 | n->host_hdr_len = sizeof(struct virtio_net_hdr); |
1711 | } else { | |
1712 | n->host_hdr_len = 0; | |
1713 | } | |
eb6b6c12 | 1714 | |
1773d9ee | 1715 | qemu_format_nic_info_str(qemu_get_queue(n->nic), n->nic_conf.macaddr.a); |
96d5e201 | 1716 | |
fed699f9 | 1717 | n->vqs[0].tx_waiting = 0; |
1773d9ee | 1718 | n->tx_burst = n->net_conf.txburst; |
bb9d17f8 | 1719 | virtio_net_set_mrg_rx_bufs(n, 0, 0); |
002437cd | 1720 | n->promisc = 1; /* for compatibility */ |
fbe78f4f | 1721 | |
7267c094 | 1722 | n->mac_table.macs = g_malloc0(MAC_TABLE_ENTRIES * ETH_ALEN); |
b6503ed9 | 1723 | |
7267c094 | 1724 | n->vlans = g_malloc0(MAX_VLAN >> 3); |
f21c0ed9 | 1725 | |
b1be4280 AK |
1726 | nc = qemu_get_queue(n->nic); |
1727 | nc->rxfilter_notify_enabled = 1; | |
1728 | ||
284a32f0 AF |
1729 | n->qdev = dev; |
1730 | register_savevm(dev, "virtio-net", -1, VIRTIO_NET_VM_VERSION, | |
fbe78f4f | 1731 | virtio_net_save, virtio_net_load, n); |
17ec5a86 FK |
1732 | } |
1733 | ||
306ec6c3 | 1734 | static void virtio_net_device_unrealize(DeviceState *dev, Error **errp) |
17ec5a86 | 1735 | { |
306ec6c3 AF |
1736 | VirtIODevice *vdev = VIRTIO_DEVICE(dev); |
1737 | VirtIONet *n = VIRTIO_NET(dev); | |
f9d6dbf0 | 1738 | int i, max_queues; |
17ec5a86 FK |
1739 | |
1740 | /* This will stop vhost backend if appropriate. */ | |
1741 | virtio_net_set_status(vdev, 0); | |
1742 | ||
306ec6c3 | 1743 | unregister_savevm(dev, "virtio-net", n); |
17ec5a86 | 1744 | |
9e288406 MA |
1745 | g_free(n->netclient_name); |
1746 | n->netclient_name = NULL; | |
1747 | g_free(n->netclient_type); | |
1748 | n->netclient_type = NULL; | |
8a253ec2 | 1749 | |
17ec5a86 FK |
1750 | g_free(n->mac_table.macs); |
1751 | g_free(n->vlans); | |
1752 | ||
f9d6dbf0 WC |
1753 | max_queues = n->multiqueue ? n->max_queues : 1; |
1754 | for (i = 0; i < max_queues; i++) { | |
1755 | virtio_net_del_queue(n, i); | |
17ec5a86 FK |
1756 | } |
1757 | ||
f57fcf70 JW |
1758 | timer_del(n->announce_timer); |
1759 | timer_free(n->announce_timer); | |
17ec5a86 FK |
1760 | g_free(n->vqs); |
1761 | qemu_del_nic(n->nic); | |
6a1a8cc7 | 1762 | virtio_cleanup(vdev); |
17ec5a86 FK |
1763 | } |
1764 | ||
1765 | static void virtio_net_instance_init(Object *obj) | |
1766 | { | |
1767 | VirtIONet *n = VIRTIO_NET(obj); | |
1768 | ||
1769 | /* | |
1770 | * The default config_size is sizeof(struct virtio_net_config). | |
1771 | * Can be overriden with virtio_net_set_config_size. | |
1772 | */ | |
1773 | n->config_size = sizeof(struct virtio_net_config); | |
aa4197c3 GA |
1774 | device_add_bootindex_property(obj, &n->nic_conf.bootindex, |
1775 | "bootindex", "/ethernet-phy@0", | |
1776 | DEVICE(n), NULL); | |
17ec5a86 FK |
1777 | } |
1778 | ||
1779 | static Property virtio_net_properties[] = { | |
87108bb2 SZ |
1780 | DEFINE_PROP_BIT("csum", VirtIONet, host_features, VIRTIO_NET_F_CSUM, true), |
1781 | DEFINE_PROP_BIT("guest_csum", VirtIONet, host_features, | |
1782 | VIRTIO_NET_F_GUEST_CSUM, true), | |
1783 | DEFINE_PROP_BIT("gso", VirtIONet, host_features, VIRTIO_NET_F_GSO, true), | |
1784 | DEFINE_PROP_BIT("guest_tso4", VirtIONet, host_features, | |
1785 | VIRTIO_NET_F_GUEST_TSO4, true), | |
1786 | DEFINE_PROP_BIT("guest_tso6", VirtIONet, host_features, | |
1787 | VIRTIO_NET_F_GUEST_TSO6, true), | |
1788 | DEFINE_PROP_BIT("guest_ecn", VirtIONet, host_features, | |
1789 | VIRTIO_NET_F_GUEST_ECN, true), | |
1790 | DEFINE_PROP_BIT("guest_ufo", VirtIONet, host_features, | |
1791 | VIRTIO_NET_F_GUEST_UFO, true), | |
1792 | DEFINE_PROP_BIT("guest_announce", VirtIONet, host_features, | |
1793 | VIRTIO_NET_F_GUEST_ANNOUNCE, true), | |
1794 | DEFINE_PROP_BIT("host_tso4", VirtIONet, host_features, | |
1795 | VIRTIO_NET_F_HOST_TSO4, true), | |
1796 | DEFINE_PROP_BIT("host_tso6", VirtIONet, host_features, | |
1797 | VIRTIO_NET_F_HOST_TSO6, true), | |
1798 | DEFINE_PROP_BIT("host_ecn", VirtIONet, host_features, | |
1799 | VIRTIO_NET_F_HOST_ECN, true), | |
1800 | DEFINE_PROP_BIT("host_ufo", VirtIONet, host_features, | |
1801 | VIRTIO_NET_F_HOST_UFO, true), | |
1802 | DEFINE_PROP_BIT("mrg_rxbuf", VirtIONet, host_features, | |
1803 | VIRTIO_NET_F_MRG_RXBUF, true), | |
1804 | DEFINE_PROP_BIT("status", VirtIONet, host_features, | |
1805 | VIRTIO_NET_F_STATUS, true), | |
1806 | DEFINE_PROP_BIT("ctrl_vq", VirtIONet, host_features, | |
1807 | VIRTIO_NET_F_CTRL_VQ, true), | |
1808 | DEFINE_PROP_BIT("ctrl_rx", VirtIONet, host_features, | |
1809 | VIRTIO_NET_F_CTRL_RX, true), | |
1810 | DEFINE_PROP_BIT("ctrl_vlan", VirtIONet, host_features, | |
1811 | VIRTIO_NET_F_CTRL_VLAN, true), | |
1812 | DEFINE_PROP_BIT("ctrl_rx_extra", VirtIONet, host_features, | |
1813 | VIRTIO_NET_F_CTRL_RX_EXTRA, true), | |
1814 | DEFINE_PROP_BIT("ctrl_mac_addr", VirtIONet, host_features, | |
1815 | VIRTIO_NET_F_CTRL_MAC_ADDR, true), | |
1816 | DEFINE_PROP_BIT("ctrl_guest_offloads", VirtIONet, host_features, | |
1817 | VIRTIO_NET_F_CTRL_GUEST_OFFLOADS, true), | |
1818 | DEFINE_PROP_BIT("mq", VirtIONet, host_features, VIRTIO_NET_F_MQ, false), | |
17ec5a86 FK |
1819 | DEFINE_NIC_PROPERTIES(VirtIONet, nic_conf), |
1820 | DEFINE_PROP_UINT32("x-txtimer", VirtIONet, net_conf.txtimer, | |
87108bb2 | 1821 | TX_TIMER_INTERVAL), |
17ec5a86 FK |
1822 | DEFINE_PROP_INT32("x-txburst", VirtIONet, net_conf.txburst, TX_BURST), |
1823 | DEFINE_PROP_STRING("tx", VirtIONet, net_conf.tx), | |
1824 | DEFINE_PROP_END_OF_LIST(), | |
1825 | }; | |
1826 | ||
1827 | static void virtio_net_class_init(ObjectClass *klass, void *data) | |
1828 | { | |
1829 | DeviceClass *dc = DEVICE_CLASS(klass); | |
1830 | VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass); | |
e6f746b3 | 1831 | |
17ec5a86 | 1832 | dc->props = virtio_net_properties; |
125ee0ed | 1833 | set_bit(DEVICE_CATEGORY_NETWORK, dc->categories); |
e6f746b3 | 1834 | vdc->realize = virtio_net_device_realize; |
306ec6c3 | 1835 | vdc->unrealize = virtio_net_device_unrealize; |
17ec5a86 FK |
1836 | vdc->get_config = virtio_net_get_config; |
1837 | vdc->set_config = virtio_net_set_config; | |
1838 | vdc->get_features = virtio_net_get_features; | |
1839 | vdc->set_features = virtio_net_set_features; | |
1840 | vdc->bad_features = virtio_net_bad_features; | |
1841 | vdc->reset = virtio_net_reset; | |
1842 | vdc->set_status = virtio_net_set_status; | |
1843 | vdc->guest_notifier_mask = virtio_net_guest_notifier_mask; | |
1844 | vdc->guest_notifier_pending = virtio_net_guest_notifier_pending; | |
037dab2f GK |
1845 | vdc->load = virtio_net_load_device; |
1846 | vdc->save = virtio_net_save_device; | |
17ec5a86 FK |
1847 | } |
1848 | ||
1849 | static const TypeInfo virtio_net_info = { | |
1850 | .name = TYPE_VIRTIO_NET, | |
1851 | .parent = TYPE_VIRTIO_DEVICE, | |
1852 | .instance_size = sizeof(VirtIONet), | |
1853 | .instance_init = virtio_net_instance_init, | |
1854 | .class_init = virtio_net_class_init, | |
1855 | }; | |
1856 | ||
1857 | static void virtio_register_types(void) | |
1858 | { | |
1859 | type_register_static(&virtio_net_info); | |
1860 | } | |
1861 | ||
1862 | type_init(virtio_register_types) |