]>
Commit | Line | Data |
---|---|---|
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 | ||
9b8bfe21 | 14 | #include "qemu/osdep.h" |
9711cd0d | 15 | #include "qemu/atomic.h" |
1de7afc9 | 16 | #include "qemu/iov.h" |
db725815 | 17 | #include "qemu/main-loop.h" |
0b8fa32f | 18 | #include "qemu/module.h" |
0d09e41a | 19 | #include "hw/virtio/virtio.h" |
1422e32d | 20 | #include "net/net.h" |
7200ac3c | 21 | #include "net/checksum.h" |
a8ed73f7 | 22 | #include "net/tap.h" |
1de7afc9 PB |
23 | #include "qemu/error-report.h" |
24 | #include "qemu/timer.h" | |
9711cd0d JF |
25 | #include "qemu/option.h" |
26 | #include "qemu/option_int.h" | |
27 | #include "qemu/config-file.h" | |
28 | #include "qapi/qmp/qdict.h" | |
0d09e41a PB |
29 | #include "hw/virtio/virtio-net.h" |
30 | #include "net/vhost_net.h" | |
9d8c6a25 | 31 | #include "net/announce.h" |
17ec5a86 | 32 | #include "hw/virtio/virtio-bus.h" |
e688df6b | 33 | #include "qapi/error.h" |
9af23989 | 34 | #include "qapi/qapi-events-net.h" |
a27bd6c7 | 35 | #include "hw/qdev-properties.h" |
9711cd0d JF |
36 | #include "qapi/qapi-types-migration.h" |
37 | #include "qapi/qapi-events-migration.h" | |
1399c60d | 38 | #include "hw/virtio/virtio-access.h" |
f8d806c9 | 39 | #include "migration/misc.h" |
9473939e | 40 | #include "standard-headers/linux/ethtool.h" |
2f780b6a | 41 | #include "sysemu/sysemu.h" |
9d8c6a25 | 42 | #include "trace.h" |
9711cd0d JF |
43 | #include "monitor/qdev.h" |
44 | #include "hw/pci/pci.h" | |
fbe78f4f | 45 | |
0ce0e8f4 | 46 | #define VIRTIO_NET_VM_VERSION 11 |
b6503ed9 | 47 | |
4ffb17f5 | 48 | #define MAC_TABLE_ENTRIES 64 |
f21c0ed9 | 49 | #define MAX_VLAN (1 << 12) /* Per 802.1Q definition */ |
9d6271b8 | 50 | |
1c0fbfa3 MT |
51 | /* previously fixed value */ |
52 | #define VIRTIO_NET_RX_QUEUE_DEFAULT_SIZE 256 | |
9b02e161 WW |
53 | #define VIRTIO_NET_TX_QUEUE_DEFAULT_SIZE 256 |
54 | ||
1c0fbfa3 MT |
55 | /* for now, only allow larger queues; with virtio-1, guest can downsize */ |
56 | #define VIRTIO_NET_RX_QUEUE_MIN_SIZE VIRTIO_NET_RX_QUEUE_DEFAULT_SIZE | |
9b02e161 | 57 | #define VIRTIO_NET_TX_QUEUE_MIN_SIZE VIRTIO_NET_TX_QUEUE_DEFAULT_SIZE |
1c0fbfa3 | 58 | |
2974e916 YB |
59 | #define VIRTIO_NET_IP4_ADDR_SIZE 8 /* ipv4 saddr + daddr */ |
60 | ||
61 | #define VIRTIO_NET_TCP_FLAG 0x3F | |
62 | #define VIRTIO_NET_TCP_HDR_LENGTH 0xF000 | |
63 | ||
64 | /* IPv4 max payload, 16 bits in the header */ | |
65 | #define VIRTIO_NET_MAX_IP4_PAYLOAD (65535 - sizeof(struct ip_header)) | |
66 | #define VIRTIO_NET_MAX_TCP_PAYLOAD 65535 | |
67 | ||
68 | /* header length value in ip header without option */ | |
69 | #define VIRTIO_NET_IP4_HEADER_LENGTH 5 | |
70 | ||
71 | #define VIRTIO_NET_IP6_ADDR_SIZE 32 /* ipv6 saddr + daddr */ | |
72 | #define VIRTIO_NET_MAX_IP6_PAYLOAD VIRTIO_NET_MAX_TCP_PAYLOAD | |
73 | ||
74 | /* Purge coalesced packets timer interval, This value affects the performance | |
75 | a lot, and should be tuned carefully, '300000'(300us) is the recommended | |
76 | value to pass the WHQL test, '50000' can gain 2x netperf throughput with | |
77 | tso/gso/gro 'off'. */ | |
78 | #define VIRTIO_NET_RSC_DEFAULT_INTERVAL 300000 | |
79 | ||
80 | /* temporary until standard header include it */ | |
81 | #if !defined(VIRTIO_NET_HDR_F_RSC_INFO) | |
82 | ||
83 | #define VIRTIO_NET_HDR_F_RSC_INFO 4 /* rsc_ext data in csum_ fields */ | |
d47e5e31 | 84 | #define VIRTIO_NET_F_RSC_EXT 61 |
2974e916 YB |
85 | |
86 | static inline __virtio16 *virtio_net_rsc_ext_num_packets( | |
87 | struct virtio_net_hdr *hdr) | |
88 | { | |
89 | return &hdr->csum_start; | |
90 | } | |
91 | ||
92 | static inline __virtio16 *virtio_net_rsc_ext_num_dupacks( | |
93 | struct virtio_net_hdr *hdr) | |
94 | { | |
95 | return &hdr->csum_offset; | |
96 | } | |
97 | ||
98 | #endif | |
99 | ||
14f9b664 | 100 | static VirtIOFeature feature_sizes[] = { |
127833ee | 101 | {.flags = 1ULL << VIRTIO_NET_F_MAC, |
5d5b33c0 | 102 | .end = endof(struct virtio_net_config, mac)}, |
127833ee | 103 | {.flags = 1ULL << VIRTIO_NET_F_STATUS, |
5d5b33c0 | 104 | .end = endof(struct virtio_net_config, status)}, |
127833ee | 105 | {.flags = 1ULL << VIRTIO_NET_F_MQ, |
5d5b33c0 | 106 | .end = endof(struct virtio_net_config, max_virtqueue_pairs)}, |
127833ee | 107 | {.flags = 1ULL << VIRTIO_NET_F_MTU, |
5d5b33c0 | 108 | .end = endof(struct virtio_net_config, mtu)}, |
9473939e | 109 | {.flags = 1ULL << VIRTIO_NET_F_SPEED_DUPLEX, |
5d5b33c0 | 110 | .end = endof(struct virtio_net_config, duplex)}, |
14f9b664 JL |
111 | {} |
112 | }; | |
113 | ||
fed699f9 | 114 | static VirtIONetQueue *virtio_net_get_subqueue(NetClientState *nc) |
0c87e93e JW |
115 | { |
116 | VirtIONet *n = qemu_get_nic_opaque(nc); | |
117 | ||
fed699f9 | 118 | return &n->vqs[nc->queue_index]; |
0c87e93e | 119 | } |
fed699f9 JW |
120 | |
121 | static int vq2q(int queue_index) | |
122 | { | |
123 | return queue_index / 2; | |
124 | } | |
125 | ||
fbe78f4f AL |
126 | /* TODO |
127 | * - we could suppress RX interrupt if we were so inclined. | |
128 | */ | |
129 | ||
0f03eca6 | 130 | static void virtio_net_get_config(VirtIODevice *vdev, uint8_t *config) |
fbe78f4f | 131 | { |
17a0ca55 | 132 | VirtIONet *n = VIRTIO_NET(vdev); |
fbe78f4f AL |
133 | struct virtio_net_config netcfg; |
134 | ||
1399c60d RR |
135 | virtio_stw_p(vdev, &netcfg.status, n->status); |
136 | virtio_stw_p(vdev, &netcfg.max_virtqueue_pairs, n->max_queues); | |
a93e599d | 137 | virtio_stw_p(vdev, &netcfg.mtu, n->net_conf.mtu); |
79674068 | 138 | memcpy(netcfg.mac, n->mac, ETH_ALEN); |
9473939e JB |
139 | virtio_stl_p(vdev, &netcfg.speed, n->net_conf.speed); |
140 | netcfg.duplex = n->net_conf.duplex; | |
14f9b664 | 141 | memcpy(config, &netcfg, n->config_size); |
fbe78f4f AL |
142 | } |
143 | ||
0f03eca6 AL |
144 | static void virtio_net_set_config(VirtIODevice *vdev, const uint8_t *config) |
145 | { | |
17a0ca55 | 146 | VirtIONet *n = VIRTIO_NET(vdev); |
14f9b664 | 147 | struct virtio_net_config netcfg = {}; |
0f03eca6 | 148 | |
14f9b664 | 149 | memcpy(&netcfg, config, n->config_size); |
0f03eca6 | 150 | |
95129d6f CH |
151 | if (!virtio_vdev_has_feature(vdev, VIRTIO_NET_F_CTRL_MAC_ADDR) && |
152 | !virtio_vdev_has_feature(vdev, VIRTIO_F_VERSION_1) && | |
c1943a3f | 153 | memcmp(netcfg.mac, n->mac, ETH_ALEN)) { |
79674068 | 154 | memcpy(n->mac, netcfg.mac, ETH_ALEN); |
b356f76d | 155 | qemu_format_nic_info_str(qemu_get_queue(n->nic), n->mac); |
0f03eca6 AL |
156 | } |
157 | } | |
158 | ||
783e7706 MT |
159 | static bool virtio_net_started(VirtIONet *n, uint8_t status) |
160 | { | |
17a0ca55 | 161 | VirtIODevice *vdev = VIRTIO_DEVICE(n); |
783e7706 | 162 | return (status & VIRTIO_CONFIG_S_DRIVER_OK) && |
17a0ca55 | 163 | (n->status & VIRTIO_NET_S_LINK_UP) && vdev->vm_running; |
783e7706 MT |
164 | } |
165 | ||
b2c929f0 DDAG |
166 | static void virtio_net_announce_notify(VirtIONet *net) |
167 | { | |
168 | VirtIODevice *vdev = VIRTIO_DEVICE(net); | |
169 | trace_virtio_net_announce_notify(); | |
170 | ||
171 | net->status |= VIRTIO_NET_S_ANNOUNCE; | |
172 | virtio_notify_config(vdev); | |
173 | } | |
174 | ||
f57fcf70 JW |
175 | static void virtio_net_announce_timer(void *opaque) |
176 | { | |
177 | VirtIONet *n = opaque; | |
9d8c6a25 | 178 | trace_virtio_net_announce_timer(n->announce_timer.round); |
f57fcf70 | 179 | |
9d8c6a25 | 180 | n->announce_timer.round--; |
b2c929f0 DDAG |
181 | virtio_net_announce_notify(n); |
182 | } | |
183 | ||
184 | static void virtio_net_announce(NetClientState *nc) | |
185 | { | |
186 | VirtIONet *n = qemu_get_nic_opaque(nc); | |
187 | VirtIODevice *vdev = VIRTIO_DEVICE(n); | |
188 | ||
189 | /* | |
190 | * Make sure the virtio migration announcement timer isn't running | |
191 | * If it is, let it trigger announcement so that we do not cause | |
192 | * confusion. | |
193 | */ | |
194 | if (n->announce_timer.round) { | |
195 | return; | |
196 | } | |
197 | ||
198 | if (virtio_vdev_has_feature(vdev, VIRTIO_NET_F_GUEST_ANNOUNCE) && | |
199 | virtio_vdev_has_feature(vdev, VIRTIO_NET_F_CTRL_VQ)) { | |
200 | virtio_net_announce_notify(n); | |
201 | } | |
f57fcf70 JW |
202 | } |
203 | ||
783e7706 | 204 | static void virtio_net_vhost_status(VirtIONet *n, uint8_t status) |
afbaa7b4 | 205 | { |
17a0ca55 | 206 | VirtIODevice *vdev = VIRTIO_DEVICE(n); |
b356f76d | 207 | NetClientState *nc = qemu_get_queue(n->nic); |
fed699f9 | 208 | int queues = n->multiqueue ? n->max_queues : 1; |
b356f76d | 209 | |
ed8b4afe | 210 | if (!get_vhost_net(nc->peer)) { |
afbaa7b4 MT |
211 | return; |
212 | } | |
fed699f9 | 213 | |
8c1ac475 RK |
214 | if ((virtio_net_started(n, status) && !nc->peer->link_down) == |
215 | !!n->vhost_started) { | |
afbaa7b4 MT |
216 | return; |
217 | } | |
218 | if (!n->vhost_started) { | |
086abc1c MT |
219 | int r, i; |
220 | ||
1bfa316c GK |
221 | if (n->needs_vnet_hdr_swap) { |
222 | error_report("backend does not support %s vnet headers; " | |
223 | "falling back on userspace virtio", | |
224 | virtio_is_big_endian(vdev) ? "BE" : "LE"); | |
225 | return; | |
226 | } | |
227 | ||
086abc1c MT |
228 | /* Any packets outstanding? Purge them to avoid touching rings |
229 | * when vhost is running. | |
230 | */ | |
231 | for (i = 0; i < queues; i++) { | |
232 | NetClientState *qnc = qemu_get_subqueue(n->nic, i); | |
233 | ||
234 | /* Purge both directions: TX and RX. */ | |
235 | qemu_net_queue_purge(qnc->peer->incoming_queue, qnc); | |
236 | qemu_net_queue_purge(qnc->incoming_queue, qnc->peer); | |
237 | } | |
238 | ||
a93e599d MC |
239 | if (virtio_has_feature(vdev->guest_features, VIRTIO_NET_F_MTU)) { |
240 | r = vhost_net_set_mtu(get_vhost_net(nc->peer), n->net_conf.mtu); | |
241 | if (r < 0) { | |
242 | error_report("%uBytes MTU not supported by the backend", | |
243 | n->net_conf.mtu); | |
244 | ||
245 | return; | |
246 | } | |
247 | } | |
248 | ||
1830b80f | 249 | n->vhost_started = 1; |
17a0ca55 | 250 | r = vhost_net_start(vdev, n->nic->ncs, queues); |
afbaa7b4 | 251 | if (r < 0) { |
e7b43f7e SH |
252 | error_report("unable to start vhost net: %d: " |
253 | "falling back on userspace virtio", -r); | |
1830b80f | 254 | n->vhost_started = 0; |
afbaa7b4 MT |
255 | } |
256 | } else { | |
17a0ca55 | 257 | vhost_net_stop(vdev, n->nic->ncs, queues); |
afbaa7b4 MT |
258 | n->vhost_started = 0; |
259 | } | |
260 | } | |
261 | ||
1bfa316c GK |
262 | static int virtio_net_set_vnet_endian_one(VirtIODevice *vdev, |
263 | NetClientState *peer, | |
264 | bool enable) | |
265 | { | |
266 | if (virtio_is_big_endian(vdev)) { | |
267 | return qemu_set_vnet_be(peer, enable); | |
268 | } else { | |
269 | return qemu_set_vnet_le(peer, enable); | |
270 | } | |
271 | } | |
272 | ||
273 | static bool virtio_net_set_vnet_endian(VirtIODevice *vdev, NetClientState *ncs, | |
274 | int queues, bool enable) | |
275 | { | |
276 | int i; | |
277 | ||
278 | for (i = 0; i < queues; i++) { | |
279 | if (virtio_net_set_vnet_endian_one(vdev, ncs[i].peer, enable) < 0 && | |
280 | enable) { | |
281 | while (--i >= 0) { | |
282 | virtio_net_set_vnet_endian_one(vdev, ncs[i].peer, false); | |
283 | } | |
284 | ||
285 | return true; | |
286 | } | |
287 | } | |
288 | ||
289 | return false; | |
290 | } | |
291 | ||
292 | static void virtio_net_vnet_endian_status(VirtIONet *n, uint8_t status) | |
293 | { | |
294 | VirtIODevice *vdev = VIRTIO_DEVICE(n); | |
295 | int queues = n->multiqueue ? n->max_queues : 1; | |
296 | ||
297 | if (virtio_net_started(n, status)) { | |
298 | /* Before using the device, we tell the network backend about the | |
299 | * endianness to use when parsing vnet headers. If the backend | |
300 | * can't do it, we fallback onto fixing the headers in the core | |
301 | * virtio-net code. | |
302 | */ | |
303 | n->needs_vnet_hdr_swap = virtio_net_set_vnet_endian(vdev, n->nic->ncs, | |
304 | queues, true); | |
305 | } else if (virtio_net_started(n, vdev->status)) { | |
306 | /* After using the device, we need to reset the network backend to | |
307 | * the default (guest native endianness), otherwise the guest may | |
308 | * lose network connectivity if it is rebooted into a different | |
309 | * endianness. | |
310 | */ | |
311 | virtio_net_set_vnet_endian(vdev, n->nic->ncs, queues, false); | |
312 | } | |
313 | } | |
314 | ||
283e2c2a YB |
315 | static void virtio_net_drop_tx_queue_data(VirtIODevice *vdev, VirtQueue *vq) |
316 | { | |
317 | unsigned int dropped = virtqueue_drop_all(vq); | |
318 | if (dropped) { | |
319 | virtio_notify(vdev, vq); | |
320 | } | |
321 | } | |
322 | ||
783e7706 MT |
323 | static void virtio_net_set_status(struct VirtIODevice *vdev, uint8_t status) |
324 | { | |
17a0ca55 | 325 | VirtIONet *n = VIRTIO_NET(vdev); |
fed699f9 JW |
326 | VirtIONetQueue *q; |
327 | int i; | |
328 | uint8_t queue_status; | |
783e7706 | 329 | |
1bfa316c | 330 | virtio_net_vnet_endian_status(n, status); |
783e7706 MT |
331 | virtio_net_vhost_status(n, status); |
332 | ||
fed699f9 | 333 | for (i = 0; i < n->max_queues; i++) { |
38705bb5 FZ |
334 | NetClientState *ncs = qemu_get_subqueue(n->nic, i); |
335 | bool queue_started; | |
fed699f9 | 336 | q = &n->vqs[i]; |
783e7706 | 337 | |
fed699f9 JW |
338 | if ((!n->multiqueue && i != 0) || i >= n->curr_queues) { |
339 | queue_status = 0; | |
783e7706 | 340 | } else { |
fed699f9 | 341 | queue_status = status; |
783e7706 | 342 | } |
38705bb5 FZ |
343 | queue_started = |
344 | virtio_net_started(n, queue_status) && !n->vhost_started; | |
345 | ||
346 | if (queue_started) { | |
347 | qemu_flush_queued_packets(ncs); | |
348 | } | |
fed699f9 JW |
349 | |
350 | if (!q->tx_waiting) { | |
351 | continue; | |
352 | } | |
353 | ||
38705bb5 | 354 | if (queue_started) { |
fed699f9 | 355 | if (q->tx_timer) { |
bc72ad67 AB |
356 | timer_mod(q->tx_timer, |
357 | qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + n->tx_timeout); | |
fed699f9 JW |
358 | } else { |
359 | qemu_bh_schedule(q->tx_bh); | |
360 | } | |
783e7706 | 361 | } else { |
fed699f9 | 362 | if (q->tx_timer) { |
bc72ad67 | 363 | timer_del(q->tx_timer); |
fed699f9 JW |
364 | } else { |
365 | qemu_bh_cancel(q->tx_bh); | |
366 | } | |
283e2c2a | 367 | if ((n->status & VIRTIO_NET_S_LINK_UP) == 0 && |
70e53e6e JW |
368 | (queue_status & VIRTIO_CONFIG_S_DRIVER_OK) && |
369 | vdev->vm_running) { | |
283e2c2a YB |
370 | /* if tx is waiting we are likely have some packets in tx queue |
371 | * and disabled notification */ | |
372 | q->tx_waiting = 0; | |
373 | virtio_queue_set_notification(q->tx_vq, 1); | |
374 | virtio_net_drop_tx_queue_data(vdev, q->tx_vq); | |
375 | } | |
783e7706 MT |
376 | } |
377 | } | |
378 | } | |
379 | ||
4e68f7a0 | 380 | static void virtio_net_set_link_status(NetClientState *nc) |
554c97dd | 381 | { |
cc1f0f45 | 382 | VirtIONet *n = qemu_get_nic_opaque(nc); |
17a0ca55 | 383 | VirtIODevice *vdev = VIRTIO_DEVICE(n); |
554c97dd AL |
384 | uint16_t old_status = n->status; |
385 | ||
eb6b6c12 | 386 | if (nc->link_down) |
554c97dd AL |
387 | n->status &= ~VIRTIO_NET_S_LINK_UP; |
388 | else | |
389 | n->status |= VIRTIO_NET_S_LINK_UP; | |
390 | ||
391 | if (n->status != old_status) | |
17a0ca55 | 392 | virtio_notify_config(vdev); |
afbaa7b4 | 393 | |
17a0ca55 | 394 | virtio_net_set_status(vdev, vdev->status); |
554c97dd AL |
395 | } |
396 | ||
b1be4280 AK |
397 | static void rxfilter_notify(NetClientState *nc) |
398 | { | |
b1be4280 AK |
399 | VirtIONet *n = qemu_get_nic_opaque(nc); |
400 | ||
401 | if (nc->rxfilter_notify_enabled) { | |
96e35046 | 402 | gchar *path = object_get_canonical_path(OBJECT(n->qdev)); |
06150279 | 403 | qapi_event_send_nic_rx_filter_changed(!!n->netclient_name, |
3ab72385 | 404 | n->netclient_name, path); |
96e35046 | 405 | g_free(path); |
b1be4280 AK |
406 | |
407 | /* disable event notification to avoid events flooding */ | |
408 | nc->rxfilter_notify_enabled = 0; | |
409 | } | |
410 | } | |
411 | ||
f7bc8ef8 AK |
412 | static intList *get_vlan_table(VirtIONet *n) |
413 | { | |
414 | intList *list, *entry; | |
415 | int i, j; | |
416 | ||
417 | list = NULL; | |
418 | for (i = 0; i < MAX_VLAN >> 5; i++) { | |
419 | for (j = 0; n->vlans[i] && j <= 0x1f; j++) { | |
420 | if (n->vlans[i] & (1U << j)) { | |
421 | entry = g_malloc0(sizeof(*entry)); | |
422 | entry->value = (i << 5) + j; | |
423 | entry->next = list; | |
424 | list = entry; | |
425 | } | |
426 | } | |
427 | } | |
428 | ||
429 | return list; | |
430 | } | |
431 | ||
b1be4280 AK |
432 | static RxFilterInfo *virtio_net_query_rxfilter(NetClientState *nc) |
433 | { | |
434 | VirtIONet *n = qemu_get_nic_opaque(nc); | |
f7bc8ef8 | 435 | VirtIODevice *vdev = VIRTIO_DEVICE(n); |
b1be4280 AK |
436 | RxFilterInfo *info; |
437 | strList *str_list, *entry; | |
f7bc8ef8 | 438 | int i; |
b1be4280 AK |
439 | |
440 | info = g_malloc0(sizeof(*info)); | |
441 | info->name = g_strdup(nc->name); | |
442 | info->promiscuous = n->promisc; | |
443 | ||
444 | if (n->nouni) { | |
445 | info->unicast = RX_STATE_NONE; | |
446 | } else if (n->alluni) { | |
447 | info->unicast = RX_STATE_ALL; | |
448 | } else { | |
449 | info->unicast = RX_STATE_NORMAL; | |
450 | } | |
451 | ||
452 | if (n->nomulti) { | |
453 | info->multicast = RX_STATE_NONE; | |
454 | } else if (n->allmulti) { | |
455 | info->multicast = RX_STATE_ALL; | |
456 | } else { | |
457 | info->multicast = RX_STATE_NORMAL; | |
458 | } | |
459 | ||
460 | info->broadcast_allowed = n->nobcast; | |
461 | info->multicast_overflow = n->mac_table.multi_overflow; | |
462 | info->unicast_overflow = n->mac_table.uni_overflow; | |
463 | ||
b0575ba4 | 464 | info->main_mac = qemu_mac_strdup_printf(n->mac); |
b1be4280 AK |
465 | |
466 | str_list = NULL; | |
467 | for (i = 0; i < n->mac_table.first_multi; i++) { | |
468 | entry = g_malloc0(sizeof(*entry)); | |
b0575ba4 | 469 | entry->value = qemu_mac_strdup_printf(n->mac_table.macs + i * ETH_ALEN); |
b1be4280 AK |
470 | entry->next = str_list; |
471 | str_list = entry; | |
472 | } | |
473 | info->unicast_table = str_list; | |
474 | ||
475 | str_list = NULL; | |
476 | for (i = n->mac_table.first_multi; i < n->mac_table.in_use; i++) { | |
477 | entry = g_malloc0(sizeof(*entry)); | |
b0575ba4 | 478 | entry->value = qemu_mac_strdup_printf(n->mac_table.macs + i * ETH_ALEN); |
b1be4280 AK |
479 | entry->next = str_list; |
480 | str_list = entry; | |
481 | } | |
482 | info->multicast_table = str_list; | |
f7bc8ef8 | 483 | info->vlan_table = get_vlan_table(n); |
b1be4280 | 484 | |
95129d6f | 485 | if (!virtio_vdev_has_feature(vdev, VIRTIO_NET_F_CTRL_VLAN)) { |
f7bc8ef8 AK |
486 | info->vlan = RX_STATE_ALL; |
487 | } else if (!info->vlan_table) { | |
488 | info->vlan = RX_STATE_NONE; | |
489 | } else { | |
490 | info->vlan = RX_STATE_NORMAL; | |
b1be4280 | 491 | } |
b1be4280 AK |
492 | |
493 | /* enable event notification after query */ | |
494 | nc->rxfilter_notify_enabled = 1; | |
495 | ||
496 | return info; | |
497 | } | |
498 | ||
002437cd AL |
499 | static void virtio_net_reset(VirtIODevice *vdev) |
500 | { | |
17a0ca55 | 501 | VirtIONet *n = VIRTIO_NET(vdev); |
94b52958 | 502 | int i; |
002437cd AL |
503 | |
504 | /* Reset back to compatibility mode */ | |
505 | n->promisc = 1; | |
506 | n->allmulti = 0; | |
015cb166 AW |
507 | n->alluni = 0; |
508 | n->nomulti = 0; | |
509 | n->nouni = 0; | |
510 | n->nobcast = 0; | |
fed699f9 JW |
511 | /* multiqueue is disabled by default */ |
512 | n->curr_queues = 1; | |
9d8c6a25 DDAG |
513 | timer_del(n->announce_timer.tm); |
514 | n->announce_timer.round = 0; | |
f57fcf70 | 515 | n->status &= ~VIRTIO_NET_S_ANNOUNCE; |
b6503ed9 | 516 | |
f21c0ed9 | 517 | /* Flush any MAC and VLAN filter table state */ |
b6503ed9 | 518 | n->mac_table.in_use = 0; |
2d9aba39 | 519 | n->mac_table.first_multi = 0; |
8fd2a2f1 AW |
520 | n->mac_table.multi_overflow = 0; |
521 | n->mac_table.uni_overflow = 0; | |
b6503ed9 | 522 | memset(n->mac_table.macs, 0, MAC_TABLE_ENTRIES * ETH_ALEN); |
41dc8a67 | 523 | memcpy(&n->mac[0], &n->nic->conf->macaddr, sizeof(n->mac)); |
702d66a8 | 524 | qemu_format_nic_info_str(qemu_get_queue(n->nic), n->mac); |
f21c0ed9 | 525 | memset(n->vlans, 0, MAX_VLAN >> 3); |
94b52958 GK |
526 | |
527 | /* Flush any async TX */ | |
528 | for (i = 0; i < n->max_queues; i++) { | |
529 | NetClientState *nc = qemu_get_subqueue(n->nic, i); | |
530 | ||
531 | if (nc->peer) { | |
532 | qemu_flush_or_purge_queued_packets(nc->peer, true); | |
533 | assert(!virtio_net_get_subqueue(nc)->async_tx.elem); | |
534 | } | |
535 | } | |
002437cd AL |
536 | } |
537 | ||
6e371ab8 | 538 | static void peer_test_vnet_hdr(VirtIONet *n) |
3a330134 | 539 | { |
b356f76d JW |
540 | NetClientState *nc = qemu_get_queue(n->nic); |
541 | if (!nc->peer) { | |
6e371ab8 | 542 | return; |
b356f76d | 543 | } |
3a330134 | 544 | |
d6085e3a | 545 | n->has_vnet_hdr = qemu_has_vnet_hdr(nc->peer); |
6e371ab8 | 546 | } |
3a330134 | 547 | |
6e371ab8 MT |
548 | static int peer_has_vnet_hdr(VirtIONet *n) |
549 | { | |
3a330134 MM |
550 | return n->has_vnet_hdr; |
551 | } | |
552 | ||
0ce0e8f4 MM |
553 | static int peer_has_ufo(VirtIONet *n) |
554 | { | |
555 | if (!peer_has_vnet_hdr(n)) | |
556 | return 0; | |
557 | ||
d6085e3a | 558 | n->has_ufo = qemu_has_ufo(qemu_get_queue(n->nic)->peer); |
0ce0e8f4 MM |
559 | |
560 | return n->has_ufo; | |
561 | } | |
562 | ||
bb9d17f8 CH |
563 | static void virtio_net_set_mrg_rx_bufs(VirtIONet *n, int mergeable_rx_bufs, |
564 | int version_1) | |
ff3a8066 | 565 | { |
fed699f9 JW |
566 | int i; |
567 | NetClientState *nc; | |
568 | ||
ff3a8066 MT |
569 | n->mergeable_rx_bufs = mergeable_rx_bufs; |
570 | ||
bb9d17f8 CH |
571 | if (version_1) { |
572 | n->guest_hdr_len = sizeof(struct virtio_net_hdr_mrg_rxbuf); | |
573 | } else { | |
574 | n->guest_hdr_len = n->mergeable_rx_bufs ? | |
575 | sizeof(struct virtio_net_hdr_mrg_rxbuf) : | |
576 | sizeof(struct virtio_net_hdr); | |
577 | } | |
ff3a8066 | 578 | |
fed699f9 JW |
579 | for (i = 0; i < n->max_queues; i++) { |
580 | nc = qemu_get_subqueue(n->nic, i); | |
581 | ||
582 | if (peer_has_vnet_hdr(n) && | |
d6085e3a SH |
583 | qemu_has_vnet_hdr_len(nc->peer, n->guest_hdr_len)) { |
584 | qemu_set_vnet_hdr_len(nc->peer, n->guest_hdr_len); | |
fed699f9 JW |
585 | n->host_hdr_len = n->guest_hdr_len; |
586 | } | |
ff3a8066 MT |
587 | } |
588 | } | |
589 | ||
2eef278b MT |
590 | static int virtio_net_max_tx_queue_size(VirtIONet *n) |
591 | { | |
592 | NetClientState *peer = n->nic_conf.peers.ncs[0]; | |
593 | ||
594 | /* | |
595 | * Backends other than vhost-user don't support max queue size. | |
596 | */ | |
597 | if (!peer) { | |
598 | return VIRTIO_NET_TX_QUEUE_DEFAULT_SIZE; | |
599 | } | |
600 | ||
601 | if (peer->info->type != NET_CLIENT_DRIVER_VHOST_USER) { | |
602 | return VIRTIO_NET_TX_QUEUE_DEFAULT_SIZE; | |
603 | } | |
604 | ||
605 | return VIRTQUEUE_MAX_SIZE; | |
606 | } | |
607 | ||
fed699f9 JW |
608 | static int peer_attach(VirtIONet *n, int index) |
609 | { | |
610 | NetClientState *nc = qemu_get_subqueue(n->nic, index); | |
611 | ||
612 | if (!nc->peer) { | |
613 | return 0; | |
614 | } | |
615 | ||
f394b2e2 | 616 | if (nc->peer->info->type == NET_CLIENT_DRIVER_VHOST_USER) { |
7263a0ad CO |
617 | vhost_set_vring_enable(nc->peer, 1); |
618 | } | |
619 | ||
f394b2e2 | 620 | if (nc->peer->info->type != NET_CLIENT_DRIVER_TAP) { |
fed699f9 JW |
621 | return 0; |
622 | } | |
623 | ||
1074b879 JW |
624 | if (n->max_queues == 1) { |
625 | return 0; | |
626 | } | |
627 | ||
fed699f9 JW |
628 | return tap_enable(nc->peer); |
629 | } | |
630 | ||
631 | static int peer_detach(VirtIONet *n, int index) | |
632 | { | |
633 | NetClientState *nc = qemu_get_subqueue(n->nic, index); | |
634 | ||
635 | if (!nc->peer) { | |
636 | return 0; | |
637 | } | |
638 | ||
f394b2e2 | 639 | if (nc->peer->info->type == NET_CLIENT_DRIVER_VHOST_USER) { |
7263a0ad CO |
640 | vhost_set_vring_enable(nc->peer, 0); |
641 | } | |
642 | ||
f394b2e2 | 643 | if (nc->peer->info->type != NET_CLIENT_DRIVER_TAP) { |
fed699f9 JW |
644 | return 0; |
645 | } | |
646 | ||
647 | return tap_disable(nc->peer); | |
648 | } | |
649 | ||
650 | static void virtio_net_set_queues(VirtIONet *n) | |
651 | { | |
652 | int i; | |
ddfa83ea | 653 | int r; |
fed699f9 | 654 | |
68b5f314 YB |
655 | if (n->nic->peer_deleted) { |
656 | return; | |
657 | } | |
658 | ||
fed699f9 JW |
659 | for (i = 0; i < n->max_queues; i++) { |
660 | if (i < n->curr_queues) { | |
ddfa83ea JS |
661 | r = peer_attach(n, i); |
662 | assert(!r); | |
fed699f9 | 663 | } else { |
ddfa83ea JS |
664 | r = peer_detach(n, i); |
665 | assert(!r); | |
fed699f9 JW |
666 | } |
667 | } | |
668 | } | |
669 | ||
ec57db16 | 670 | static void virtio_net_set_multiqueue(VirtIONet *n, int multiqueue); |
fed699f9 | 671 | |
9d5b731d JW |
672 | static uint64_t virtio_net_get_features(VirtIODevice *vdev, uint64_t features, |
673 | Error **errp) | |
fbe78f4f | 674 | { |
17a0ca55 | 675 | VirtIONet *n = VIRTIO_NET(vdev); |
b356f76d | 676 | NetClientState *nc = qemu_get_queue(n->nic); |
fbe78f4f | 677 | |
da3e8a23 SZ |
678 | /* Firstly sync all virtio-net possible supported features */ |
679 | features |= n->host_features; | |
680 | ||
0cd09c3a | 681 | virtio_add_feature(&features, VIRTIO_NET_F_MAC); |
c9f79a3f | 682 | |
6e371ab8 | 683 | if (!peer_has_vnet_hdr(n)) { |
0cd09c3a CH |
684 | virtio_clear_feature(&features, VIRTIO_NET_F_CSUM); |
685 | virtio_clear_feature(&features, VIRTIO_NET_F_HOST_TSO4); | |
686 | virtio_clear_feature(&features, VIRTIO_NET_F_HOST_TSO6); | |
687 | virtio_clear_feature(&features, VIRTIO_NET_F_HOST_ECN); | |
8172539d | 688 | |
0cd09c3a CH |
689 | virtio_clear_feature(&features, VIRTIO_NET_F_GUEST_CSUM); |
690 | virtio_clear_feature(&features, VIRTIO_NET_F_GUEST_TSO4); | |
691 | virtio_clear_feature(&features, VIRTIO_NET_F_GUEST_TSO6); | |
692 | virtio_clear_feature(&features, VIRTIO_NET_F_GUEST_ECN); | |
8172539d | 693 | } |
3a330134 | 694 | |
8172539d | 695 | if (!peer_has_vnet_hdr(n) || !peer_has_ufo(n)) { |
0cd09c3a CH |
696 | virtio_clear_feature(&features, VIRTIO_NET_F_GUEST_UFO); |
697 | virtio_clear_feature(&features, VIRTIO_NET_F_HOST_UFO); | |
3a330134 MM |
698 | } |
699 | ||
ed8b4afe | 700 | if (!get_vhost_net(nc->peer)) { |
9bc6304c MT |
701 | return features; |
702 | } | |
2974e916 | 703 | |
75ebec11 MC |
704 | features = vhost_net_get_features(get_vhost_net(nc->peer), features); |
705 | vdev->backend_features = features; | |
706 | ||
707 | if (n->mtu_bypass_backend && | |
708 | (n->host_features & 1ULL << VIRTIO_NET_F_MTU)) { | |
709 | features |= (1ULL << VIRTIO_NET_F_MTU); | |
710 | } | |
711 | ||
712 | return features; | |
fbe78f4f AL |
713 | } |
714 | ||
019a3edb | 715 | static uint64_t virtio_net_bad_features(VirtIODevice *vdev) |
8eca6b1b | 716 | { |
019a3edb | 717 | uint64_t features = 0; |
8eca6b1b AL |
718 | |
719 | /* Linux kernel 2.6.25. It understood MAC (as everyone must), | |
720 | * but also these: */ | |
0cd09c3a CH |
721 | virtio_add_feature(&features, VIRTIO_NET_F_MAC); |
722 | virtio_add_feature(&features, VIRTIO_NET_F_CSUM); | |
723 | virtio_add_feature(&features, VIRTIO_NET_F_HOST_TSO4); | |
724 | virtio_add_feature(&features, VIRTIO_NET_F_HOST_TSO6); | |
725 | virtio_add_feature(&features, VIRTIO_NET_F_HOST_ECN); | |
8eca6b1b | 726 | |
8172539d | 727 | return features; |
8eca6b1b AL |
728 | } |
729 | ||
644c9858 DF |
730 | static void virtio_net_apply_guest_offloads(VirtIONet *n) |
731 | { | |
ad37bb3b | 732 | qemu_set_offload(qemu_get_queue(n->nic)->peer, |
644c9858 DF |
733 | !!(n->curr_guest_offloads & (1ULL << VIRTIO_NET_F_GUEST_CSUM)), |
734 | !!(n->curr_guest_offloads & (1ULL << VIRTIO_NET_F_GUEST_TSO4)), | |
735 | !!(n->curr_guest_offloads & (1ULL << VIRTIO_NET_F_GUEST_TSO6)), | |
736 | !!(n->curr_guest_offloads & (1ULL << VIRTIO_NET_F_GUEST_ECN)), | |
737 | !!(n->curr_guest_offloads & (1ULL << VIRTIO_NET_F_GUEST_UFO))); | |
738 | } | |
739 | ||
740 | static uint64_t virtio_net_guest_offloads_by_features(uint32_t features) | |
741 | { | |
742 | static const uint64_t guest_offloads_mask = | |
743 | (1ULL << VIRTIO_NET_F_GUEST_CSUM) | | |
744 | (1ULL << VIRTIO_NET_F_GUEST_TSO4) | | |
745 | (1ULL << VIRTIO_NET_F_GUEST_TSO6) | | |
746 | (1ULL << VIRTIO_NET_F_GUEST_ECN) | | |
747 | (1ULL << VIRTIO_NET_F_GUEST_UFO); | |
748 | ||
749 | return guest_offloads_mask & features; | |
750 | } | |
751 | ||
752 | static inline uint64_t virtio_net_supported_guest_offloads(VirtIONet *n) | |
753 | { | |
754 | VirtIODevice *vdev = VIRTIO_DEVICE(n); | |
755 | return virtio_net_guest_offloads_by_features(vdev->guest_features); | |
756 | } | |
757 | ||
9711cd0d JF |
758 | static void failover_add_primary(VirtIONet *n, Error **errp) |
759 | { | |
760 | Error *err = NULL; | |
761 | ||
762 | n->primary_device_opts = qemu_opts_find(qemu_find_opts("device"), | |
763 | n->primary_device_id); | |
764 | if (n->primary_device_opts) { | |
765 | n->primary_dev = qdev_device_add(n->primary_device_opts, &err); | |
766 | if (err) { | |
767 | qemu_opts_del(n->primary_device_opts); | |
768 | } | |
769 | if (n->primary_dev) { | |
770 | n->primary_bus = n->primary_dev->parent_bus; | |
771 | if (err) { | |
772 | qdev_unplug(n->primary_dev, &err); | |
773 | qdev_set_id(n->primary_dev, ""); | |
774 | ||
775 | } | |
776 | } | |
777 | } else { | |
778 | error_setg(errp, "Primary device not found"); | |
779 | error_append_hint(errp, "Virtio-net failover will not work. Make " | |
780 | "sure primary device has parameter" | |
781 | " failover_pair_id=<virtio-net-id>\n"); | |
782 | } | |
783 | if (err) { | |
784 | error_propagate(errp, err); | |
785 | } | |
786 | } | |
787 | ||
788 | static int is_my_primary(void *opaque, QemuOpts *opts, Error **errp) | |
789 | { | |
790 | VirtIONet *n = opaque; | |
791 | int ret = 0; | |
792 | ||
793 | const char *standby_id = qemu_opt_get(opts, "failover_pair_id"); | |
794 | ||
795 | if (standby_id != NULL && (g_strcmp0(standby_id, n->netclient_name) == 0)) { | |
796 | n->primary_device_id = g_strdup(opts->id); | |
797 | ret = 1; | |
798 | } | |
799 | ||
800 | return ret; | |
801 | } | |
802 | ||
803 | static DeviceState *virtio_net_find_primary(VirtIONet *n, Error **errp) | |
804 | { | |
805 | DeviceState *dev = NULL; | |
806 | Error *err = NULL; | |
807 | ||
808 | if (qemu_opts_foreach(qemu_find_opts("device"), | |
809 | is_my_primary, n, &err)) { | |
810 | if (err) { | |
811 | error_propagate(errp, err); | |
812 | return NULL; | |
813 | } | |
814 | if (n->primary_device_id) { | |
815 | dev = qdev_find_recursive(sysbus_get_default(), | |
816 | n->primary_device_id); | |
817 | } else { | |
818 | error_setg(errp, "Primary device id not found"); | |
819 | return NULL; | |
820 | } | |
821 | } | |
822 | return dev; | |
823 | } | |
824 | ||
825 | ||
826 | ||
827 | static DeviceState *virtio_connect_failover_devices(VirtIONet *n, | |
828 | DeviceState *dev, | |
829 | Error **errp) | |
830 | { | |
831 | DeviceState *prim_dev = NULL; | |
832 | Error *err = NULL; | |
833 | ||
834 | prim_dev = virtio_net_find_primary(n, &err); | |
835 | if (prim_dev) { | |
836 | n->primary_device_id = g_strdup(prim_dev->id); | |
837 | n->primary_device_opts = prim_dev->opts; | |
838 | } else { | |
839 | if (err) { | |
840 | error_propagate(errp, err); | |
841 | } | |
842 | } | |
843 | ||
844 | return prim_dev; | |
845 | } | |
846 | ||
d5aaa1b0 | 847 | static void virtio_net_set_features(VirtIODevice *vdev, uint64_t features) |
fbe78f4f | 848 | { |
17a0ca55 | 849 | VirtIONet *n = VIRTIO_NET(vdev); |
9711cd0d | 850 | Error *err = NULL; |
fed699f9 JW |
851 | int i; |
852 | ||
75ebec11 MC |
853 | if (n->mtu_bypass_backend && |
854 | !virtio_has_feature(vdev->backend_features, VIRTIO_NET_F_MTU)) { | |
855 | features &= ~(1ULL << VIRTIO_NET_F_MTU); | |
856 | } | |
857 | ||
ef546f12 | 858 | virtio_net_set_multiqueue(n, |
95129d6f | 859 | virtio_has_feature(features, VIRTIO_NET_F_MQ)); |
fbe78f4f | 860 | |
ef546f12 | 861 | virtio_net_set_mrg_rx_bufs(n, |
95129d6f CH |
862 | virtio_has_feature(features, |
863 | VIRTIO_NET_F_MRG_RXBUF), | |
864 | virtio_has_feature(features, | |
865 | VIRTIO_F_VERSION_1)); | |
f5436dd9 | 866 | |
2974e916 YB |
867 | n->rsc4_enabled = virtio_has_feature(features, VIRTIO_NET_F_RSC_EXT) && |
868 | virtio_has_feature(features, VIRTIO_NET_F_GUEST_TSO4); | |
869 | n->rsc6_enabled = virtio_has_feature(features, VIRTIO_NET_F_RSC_EXT) && | |
870 | virtio_has_feature(features, VIRTIO_NET_F_GUEST_TSO6); | |
871 | ||
f5436dd9 | 872 | if (n->has_vnet_hdr) { |
644c9858 DF |
873 | n->curr_guest_offloads = |
874 | virtio_net_guest_offloads_by_features(features); | |
875 | virtio_net_apply_guest_offloads(n); | |
f5436dd9 | 876 | } |
fed699f9 JW |
877 | |
878 | for (i = 0; i < n->max_queues; i++) { | |
879 | NetClientState *nc = qemu_get_subqueue(n->nic, i); | |
880 | ||
ed8b4afe | 881 | if (!get_vhost_net(nc->peer)) { |
fed699f9 JW |
882 | continue; |
883 | } | |
ed8b4afe | 884 | vhost_net_ack_features(get_vhost_net(nc->peer), features); |
dc14a397 | 885 | } |
0b1eaa88 | 886 | |
95129d6f | 887 | if (virtio_has_feature(features, VIRTIO_NET_F_CTRL_VLAN)) { |
0b1eaa88 SF |
888 | memset(n->vlans, 0, MAX_VLAN >> 3); |
889 | } else { | |
890 | memset(n->vlans, 0xff, MAX_VLAN >> 3); | |
891 | } | |
9711cd0d JF |
892 | |
893 | if (virtio_has_feature(features, VIRTIO_NET_F_STANDBY)) { | |
894 | qapi_event_send_failover_negotiated(n->netclient_name); | |
895 | atomic_set(&n->primary_should_be_hidden, false); | |
896 | failover_add_primary(n, &err); | |
897 | if (err) { | |
898 | n->primary_dev = virtio_connect_failover_devices(n, n->qdev, &err); | |
899 | if (err) { | |
900 | goto out_err; | |
901 | } | |
902 | failover_add_primary(n, &err); | |
903 | if (err) { | |
904 | goto out_err; | |
905 | } | |
906 | } | |
907 | } | |
908 | return; | |
909 | ||
910 | out_err: | |
911 | if (err) { | |
912 | warn_report_err(err); | |
913 | } | |
fbe78f4f AL |
914 | } |
915 | ||
002437cd | 916 | static int virtio_net_handle_rx_mode(VirtIONet *n, uint8_t cmd, |
921ac5d0 | 917 | struct iovec *iov, unsigned int iov_cnt) |
002437cd AL |
918 | { |
919 | uint8_t on; | |
921ac5d0 | 920 | size_t s; |
b1be4280 | 921 | NetClientState *nc = qemu_get_queue(n->nic); |
002437cd | 922 | |
921ac5d0 MT |
923 | s = iov_to_buf(iov, iov_cnt, 0, &on, sizeof(on)); |
924 | if (s != sizeof(on)) { | |
925 | return VIRTIO_NET_ERR; | |
002437cd AL |
926 | } |
927 | ||
dd23454b | 928 | if (cmd == VIRTIO_NET_CTRL_RX_PROMISC) { |
002437cd | 929 | n->promisc = on; |
dd23454b | 930 | } else if (cmd == VIRTIO_NET_CTRL_RX_ALLMULTI) { |
002437cd | 931 | n->allmulti = on; |
dd23454b | 932 | } else if (cmd == VIRTIO_NET_CTRL_RX_ALLUNI) { |
015cb166 | 933 | n->alluni = on; |
dd23454b | 934 | } else if (cmd == VIRTIO_NET_CTRL_RX_NOMULTI) { |
015cb166 | 935 | n->nomulti = on; |
dd23454b | 936 | } else if (cmd == VIRTIO_NET_CTRL_RX_NOUNI) { |
015cb166 | 937 | n->nouni = on; |
dd23454b | 938 | } else if (cmd == VIRTIO_NET_CTRL_RX_NOBCAST) { |
015cb166 | 939 | n->nobcast = on; |
921ac5d0 | 940 | } else { |
002437cd | 941 | return VIRTIO_NET_ERR; |
921ac5d0 | 942 | } |
002437cd | 943 | |
b1be4280 AK |
944 | rxfilter_notify(nc); |
945 | ||
002437cd AL |
946 | return VIRTIO_NET_OK; |
947 | } | |
948 | ||
644c9858 DF |
949 | static int virtio_net_handle_offloads(VirtIONet *n, uint8_t cmd, |
950 | struct iovec *iov, unsigned int iov_cnt) | |
951 | { | |
952 | VirtIODevice *vdev = VIRTIO_DEVICE(n); | |
953 | uint64_t offloads; | |
954 | size_t s; | |
955 | ||
95129d6f | 956 | if (!virtio_vdev_has_feature(vdev, VIRTIO_NET_F_CTRL_GUEST_OFFLOADS)) { |
644c9858 DF |
957 | return VIRTIO_NET_ERR; |
958 | } | |
959 | ||
960 | s = iov_to_buf(iov, iov_cnt, 0, &offloads, sizeof(offloads)); | |
961 | if (s != sizeof(offloads)) { | |
962 | return VIRTIO_NET_ERR; | |
963 | } | |
964 | ||
965 | if (cmd == VIRTIO_NET_CTRL_GUEST_OFFLOADS_SET) { | |
966 | uint64_t supported_offloads; | |
967 | ||
189ae6bb JW |
968 | offloads = virtio_ldq_p(vdev, &offloads); |
969 | ||
644c9858 DF |
970 | if (!n->has_vnet_hdr) { |
971 | return VIRTIO_NET_ERR; | |
972 | } | |
973 | ||
2974e916 YB |
974 | n->rsc4_enabled = virtio_has_feature(offloads, VIRTIO_NET_F_RSC_EXT) && |
975 | virtio_has_feature(offloads, VIRTIO_NET_F_GUEST_TSO4); | |
976 | n->rsc6_enabled = virtio_has_feature(offloads, VIRTIO_NET_F_RSC_EXT) && | |
977 | virtio_has_feature(offloads, VIRTIO_NET_F_GUEST_TSO6); | |
978 | virtio_clear_feature(&offloads, VIRTIO_NET_F_RSC_EXT); | |
979 | ||
644c9858 DF |
980 | supported_offloads = virtio_net_supported_guest_offloads(n); |
981 | if (offloads & ~supported_offloads) { | |
982 | return VIRTIO_NET_ERR; | |
983 | } | |
984 | ||
985 | n->curr_guest_offloads = offloads; | |
986 | virtio_net_apply_guest_offloads(n); | |
987 | ||
988 | return VIRTIO_NET_OK; | |
989 | } else { | |
990 | return VIRTIO_NET_ERR; | |
991 | } | |
992 | } | |
993 | ||
b6503ed9 | 994 | static int virtio_net_handle_mac(VirtIONet *n, uint8_t cmd, |
921ac5d0 | 995 | struct iovec *iov, unsigned int iov_cnt) |
b6503ed9 | 996 | { |
1399c60d | 997 | VirtIODevice *vdev = VIRTIO_DEVICE(n); |
b6503ed9 | 998 | struct virtio_net_ctrl_mac mac_data; |
921ac5d0 | 999 | size_t s; |
b1be4280 | 1000 | NetClientState *nc = qemu_get_queue(n->nic); |
b6503ed9 | 1001 | |
c1943a3f AK |
1002 | if (cmd == VIRTIO_NET_CTRL_MAC_ADDR_SET) { |
1003 | if (iov_size(iov, iov_cnt) != sizeof(n->mac)) { | |
1004 | return VIRTIO_NET_ERR; | |
1005 | } | |
1006 | s = iov_to_buf(iov, iov_cnt, 0, &n->mac, sizeof(n->mac)); | |
1007 | assert(s == sizeof(n->mac)); | |
b356f76d | 1008 | qemu_format_nic_info_str(qemu_get_queue(n->nic), n->mac); |
b1be4280 AK |
1009 | rxfilter_notify(nc); |
1010 | ||
c1943a3f AK |
1011 | return VIRTIO_NET_OK; |
1012 | } | |
1013 | ||
921ac5d0 | 1014 | if (cmd != VIRTIO_NET_CTRL_MAC_TABLE_SET) { |
b6503ed9 | 1015 | return VIRTIO_NET_ERR; |
921ac5d0 | 1016 | } |
b6503ed9 | 1017 | |
cae2e556 AK |
1018 | int in_use = 0; |
1019 | int first_multi = 0; | |
1020 | uint8_t uni_overflow = 0; | |
1021 | uint8_t multi_overflow = 0; | |
1022 | uint8_t *macs = g_malloc0(MAC_TABLE_ENTRIES * ETH_ALEN); | |
b6503ed9 | 1023 | |
921ac5d0 MT |
1024 | s = iov_to_buf(iov, iov_cnt, 0, &mac_data.entries, |
1025 | sizeof(mac_data.entries)); | |
1399c60d | 1026 | mac_data.entries = virtio_ldl_p(vdev, &mac_data.entries); |
921ac5d0 | 1027 | if (s != sizeof(mac_data.entries)) { |
b1be4280 | 1028 | goto error; |
921ac5d0 MT |
1029 | } |
1030 | iov_discard_front(&iov, &iov_cnt, s); | |
b6503ed9 | 1031 | |
921ac5d0 | 1032 | if (mac_data.entries * ETH_ALEN > iov_size(iov, iov_cnt)) { |
b1be4280 | 1033 | goto error; |
921ac5d0 | 1034 | } |
b6503ed9 AL |
1035 | |
1036 | if (mac_data.entries <= MAC_TABLE_ENTRIES) { | |
cae2e556 | 1037 | s = iov_to_buf(iov, iov_cnt, 0, macs, |
921ac5d0 MT |
1038 | mac_data.entries * ETH_ALEN); |
1039 | if (s != mac_data.entries * ETH_ALEN) { | |
b1be4280 | 1040 | goto error; |
921ac5d0 | 1041 | } |
cae2e556 | 1042 | in_use += mac_data.entries; |
b6503ed9 | 1043 | } else { |
cae2e556 | 1044 | uni_overflow = 1; |
b6503ed9 AL |
1045 | } |
1046 | ||
921ac5d0 MT |
1047 | iov_discard_front(&iov, &iov_cnt, mac_data.entries * ETH_ALEN); |
1048 | ||
cae2e556 | 1049 | first_multi = in_use; |
2d9aba39 | 1050 | |
921ac5d0 MT |
1051 | s = iov_to_buf(iov, iov_cnt, 0, &mac_data.entries, |
1052 | sizeof(mac_data.entries)); | |
1399c60d | 1053 | mac_data.entries = virtio_ldl_p(vdev, &mac_data.entries); |
921ac5d0 | 1054 | if (s != sizeof(mac_data.entries)) { |
b1be4280 | 1055 | goto error; |
921ac5d0 MT |
1056 | } |
1057 | ||
1058 | iov_discard_front(&iov, &iov_cnt, s); | |
b6503ed9 | 1059 | |
921ac5d0 | 1060 | if (mac_data.entries * ETH_ALEN != iov_size(iov, iov_cnt)) { |
b1be4280 | 1061 | goto error; |
921ac5d0 | 1062 | } |
b6503ed9 | 1063 | |
edc24385 | 1064 | if (mac_data.entries <= MAC_TABLE_ENTRIES - in_use) { |
cae2e556 | 1065 | s = iov_to_buf(iov, iov_cnt, 0, &macs[in_use * ETH_ALEN], |
921ac5d0 MT |
1066 | mac_data.entries * ETH_ALEN); |
1067 | if (s != mac_data.entries * ETH_ALEN) { | |
b1be4280 | 1068 | goto error; |
8fd2a2f1 | 1069 | } |
cae2e556 | 1070 | in_use += mac_data.entries; |
921ac5d0 | 1071 | } else { |
cae2e556 | 1072 | multi_overflow = 1; |
b6503ed9 AL |
1073 | } |
1074 | ||
cae2e556 AK |
1075 | n->mac_table.in_use = in_use; |
1076 | n->mac_table.first_multi = first_multi; | |
1077 | n->mac_table.uni_overflow = uni_overflow; | |
1078 | n->mac_table.multi_overflow = multi_overflow; | |
1079 | memcpy(n->mac_table.macs, macs, MAC_TABLE_ENTRIES * ETH_ALEN); | |
1080 | g_free(macs); | |
b1be4280 AK |
1081 | rxfilter_notify(nc); |
1082 | ||
b6503ed9 | 1083 | return VIRTIO_NET_OK; |
b1be4280 AK |
1084 | |
1085 | error: | |
cae2e556 | 1086 | g_free(macs); |
b1be4280 | 1087 | return VIRTIO_NET_ERR; |
b6503ed9 AL |
1088 | } |
1089 | ||
f21c0ed9 | 1090 | static int virtio_net_handle_vlan_table(VirtIONet *n, uint8_t cmd, |
921ac5d0 | 1091 | struct iovec *iov, unsigned int iov_cnt) |
f21c0ed9 | 1092 | { |
1399c60d | 1093 | VirtIODevice *vdev = VIRTIO_DEVICE(n); |
f21c0ed9 | 1094 | uint16_t vid; |
921ac5d0 | 1095 | size_t s; |
b1be4280 | 1096 | NetClientState *nc = qemu_get_queue(n->nic); |
f21c0ed9 | 1097 | |
921ac5d0 | 1098 | s = iov_to_buf(iov, iov_cnt, 0, &vid, sizeof(vid)); |
1399c60d | 1099 | vid = virtio_lduw_p(vdev, &vid); |
921ac5d0 | 1100 | if (s != sizeof(vid)) { |
f21c0ed9 AL |
1101 | return VIRTIO_NET_ERR; |
1102 | } | |
1103 | ||
f21c0ed9 AL |
1104 | if (vid >= MAX_VLAN) |
1105 | return VIRTIO_NET_ERR; | |
1106 | ||
1107 | if (cmd == VIRTIO_NET_CTRL_VLAN_ADD) | |
1108 | n->vlans[vid >> 5] |= (1U << (vid & 0x1f)); | |
1109 | else if (cmd == VIRTIO_NET_CTRL_VLAN_DEL) | |
1110 | n->vlans[vid >> 5] &= ~(1U << (vid & 0x1f)); | |
1111 | else | |
1112 | return VIRTIO_NET_ERR; | |
1113 | ||
b1be4280 AK |
1114 | rxfilter_notify(nc); |
1115 | ||
f21c0ed9 AL |
1116 | return VIRTIO_NET_OK; |
1117 | } | |
1118 | ||
f57fcf70 JW |
1119 | static int virtio_net_handle_announce(VirtIONet *n, uint8_t cmd, |
1120 | struct iovec *iov, unsigned int iov_cnt) | |
1121 | { | |
9d8c6a25 | 1122 | trace_virtio_net_handle_announce(n->announce_timer.round); |
f57fcf70 JW |
1123 | if (cmd == VIRTIO_NET_CTRL_ANNOUNCE_ACK && |
1124 | n->status & VIRTIO_NET_S_ANNOUNCE) { | |
1125 | n->status &= ~VIRTIO_NET_S_ANNOUNCE; | |
9d8c6a25 DDAG |
1126 | if (n->announce_timer.round) { |
1127 | qemu_announce_timer_step(&n->announce_timer); | |
f57fcf70 JW |
1128 | } |
1129 | return VIRTIO_NET_OK; | |
1130 | } else { | |
1131 | return VIRTIO_NET_ERR; | |
1132 | } | |
1133 | } | |
1134 | ||
fed699f9 | 1135 | static int virtio_net_handle_mq(VirtIONet *n, uint8_t cmd, |
f8f7c533 | 1136 | struct iovec *iov, unsigned int iov_cnt) |
fed699f9 | 1137 | { |
17a0ca55 | 1138 | VirtIODevice *vdev = VIRTIO_DEVICE(n); |
f8f7c533 JW |
1139 | struct virtio_net_ctrl_mq mq; |
1140 | size_t s; | |
1141 | uint16_t queues; | |
fed699f9 | 1142 | |
f8f7c533 JW |
1143 | s = iov_to_buf(iov, iov_cnt, 0, &mq, sizeof(mq)); |
1144 | if (s != sizeof(mq)) { | |
fed699f9 JW |
1145 | return VIRTIO_NET_ERR; |
1146 | } | |
1147 | ||
1148 | if (cmd != VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET) { | |
1149 | return VIRTIO_NET_ERR; | |
1150 | } | |
1151 | ||
1399c60d | 1152 | queues = virtio_lduw_p(vdev, &mq.virtqueue_pairs); |
fed699f9 | 1153 | |
f8f7c533 JW |
1154 | if (queues < VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MIN || |
1155 | queues > VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MAX || | |
1156 | queues > n->max_queues || | |
fed699f9 JW |
1157 | !n->multiqueue) { |
1158 | return VIRTIO_NET_ERR; | |
1159 | } | |
1160 | ||
f8f7c533 | 1161 | n->curr_queues = queues; |
fed699f9 JW |
1162 | /* stop the backend before changing the number of queues to avoid handling a |
1163 | * disabled queue */ | |
17a0ca55 | 1164 | virtio_net_set_status(vdev, vdev->status); |
fed699f9 JW |
1165 | virtio_net_set_queues(n); |
1166 | ||
1167 | return VIRTIO_NET_OK; | |
1168 | } | |
ba7eadb5 | 1169 | |
3d11d36c AL |
1170 | static void virtio_net_handle_ctrl(VirtIODevice *vdev, VirtQueue *vq) |
1171 | { | |
17a0ca55 | 1172 | VirtIONet *n = VIRTIO_NET(vdev); |
3d11d36c AL |
1173 | struct virtio_net_ctrl_hdr ctrl; |
1174 | virtio_net_ctrl_ack status = VIRTIO_NET_ERR; | |
51b19ebe | 1175 | VirtQueueElement *elem; |
921ac5d0 | 1176 | size_t s; |
771b6ed3 | 1177 | struct iovec *iov, *iov2; |
921ac5d0 | 1178 | unsigned int iov_cnt; |
3d11d36c | 1179 | |
51b19ebe PB |
1180 | for (;;) { |
1181 | elem = virtqueue_pop(vq, sizeof(VirtQueueElement)); | |
1182 | if (!elem) { | |
1183 | break; | |
1184 | } | |
1185 | if (iov_size(elem->in_sg, elem->in_num) < sizeof(status) || | |
1186 | iov_size(elem->out_sg, elem->out_num) < sizeof(ctrl)) { | |
ba7eadb5 GK |
1187 | virtio_error(vdev, "virtio-net ctrl missing headers"); |
1188 | virtqueue_detach_element(vq, elem, 0); | |
1189 | g_free(elem); | |
1190 | break; | |
3d11d36c AL |
1191 | } |
1192 | ||
51b19ebe PB |
1193 | iov_cnt = elem->out_num; |
1194 | iov2 = iov = g_memdup(elem->out_sg, sizeof(struct iovec) * elem->out_num); | |
921ac5d0 MT |
1195 | s = iov_to_buf(iov, iov_cnt, 0, &ctrl, sizeof(ctrl)); |
1196 | iov_discard_front(&iov, &iov_cnt, sizeof(ctrl)); | |
1197 | if (s != sizeof(ctrl)) { | |
1198 | status = VIRTIO_NET_ERR; | |
dd23454b | 1199 | } else if (ctrl.class == VIRTIO_NET_CTRL_RX) { |
921ac5d0 MT |
1200 | status = virtio_net_handle_rx_mode(n, ctrl.cmd, iov, iov_cnt); |
1201 | } else if (ctrl.class == VIRTIO_NET_CTRL_MAC) { | |
1202 | status = virtio_net_handle_mac(n, ctrl.cmd, iov, iov_cnt); | |
1203 | } else if (ctrl.class == VIRTIO_NET_CTRL_VLAN) { | |
1204 | status = virtio_net_handle_vlan_table(n, ctrl.cmd, iov, iov_cnt); | |
f57fcf70 JW |
1205 | } else if (ctrl.class == VIRTIO_NET_CTRL_ANNOUNCE) { |
1206 | status = virtio_net_handle_announce(n, ctrl.cmd, iov, iov_cnt); | |
fed699f9 | 1207 | } else if (ctrl.class == VIRTIO_NET_CTRL_MQ) { |
f8f7c533 | 1208 | status = virtio_net_handle_mq(n, ctrl.cmd, iov, iov_cnt); |
644c9858 DF |
1209 | } else if (ctrl.class == VIRTIO_NET_CTRL_GUEST_OFFLOADS) { |
1210 | status = virtio_net_handle_offloads(n, ctrl.cmd, iov, iov_cnt); | |
3d11d36c AL |
1211 | } |
1212 | ||
51b19ebe | 1213 | s = iov_from_buf(elem->in_sg, elem->in_num, 0, &status, sizeof(status)); |
921ac5d0 | 1214 | assert(s == sizeof(status)); |
3d11d36c | 1215 | |
51b19ebe | 1216 | virtqueue_push(vq, elem, sizeof(status)); |
3d11d36c | 1217 | virtio_notify(vdev, vq); |
771b6ed3 | 1218 | g_free(iov2); |
51b19ebe | 1219 | g_free(elem); |
3d11d36c AL |
1220 | } |
1221 | } | |
1222 | ||
fbe78f4f AL |
1223 | /* RX */ |
1224 | ||
1225 | static void virtio_net_handle_rx(VirtIODevice *vdev, VirtQueue *vq) | |
1226 | { | |
17a0ca55 | 1227 | VirtIONet *n = VIRTIO_NET(vdev); |
fed699f9 | 1228 | int queue_index = vq2q(virtio_get_queue_index(vq)); |
8aeff62d | 1229 | |
fed699f9 | 1230 | qemu_flush_queued_packets(qemu_get_subqueue(n->nic, queue_index)); |
fbe78f4f AL |
1231 | } |
1232 | ||
4e68f7a0 | 1233 | static int virtio_net_can_receive(NetClientState *nc) |
fbe78f4f | 1234 | { |
cc1f0f45 | 1235 | VirtIONet *n = qemu_get_nic_opaque(nc); |
17a0ca55 | 1236 | VirtIODevice *vdev = VIRTIO_DEVICE(n); |
fed699f9 | 1237 | VirtIONetQueue *q = virtio_net_get_subqueue(nc); |
0c87e93e | 1238 | |
17a0ca55 | 1239 | if (!vdev->vm_running) { |
95477323 MT |
1240 | return 0; |
1241 | } | |
cdd5cc12 | 1242 | |
fed699f9 JW |
1243 | if (nc->queue_index >= n->curr_queues) { |
1244 | return 0; | |
1245 | } | |
1246 | ||
0c87e93e | 1247 | if (!virtio_queue_ready(q->rx_vq) || |
17a0ca55 | 1248 | !(vdev->status & VIRTIO_CONFIG_S_DRIVER_OK)) { |
fbe78f4f | 1249 | return 0; |
0c87e93e | 1250 | } |
fbe78f4f | 1251 | |
cdd5cc12 MM |
1252 | return 1; |
1253 | } | |
1254 | ||
0c87e93e | 1255 | static int virtio_net_has_buffers(VirtIONetQueue *q, int bufsize) |
cdd5cc12 | 1256 | { |
0c87e93e JW |
1257 | VirtIONet *n = q->n; |
1258 | if (virtio_queue_empty(q->rx_vq) || | |
fbe78f4f | 1259 | (n->mergeable_rx_bufs && |
0c87e93e JW |
1260 | !virtqueue_avail_bytes(q->rx_vq, bufsize, 0))) { |
1261 | virtio_queue_set_notification(q->rx_vq, 1); | |
06b12970 TL |
1262 | |
1263 | /* To avoid a race condition where the guest has made some buffers | |
1264 | * available after the above check but before notification was | |
1265 | * enabled, check for available buffers again. | |
1266 | */ | |
0c87e93e | 1267 | if (virtio_queue_empty(q->rx_vq) || |
06b12970 | 1268 | (n->mergeable_rx_bufs && |
0c87e93e | 1269 | !virtqueue_avail_bytes(q->rx_vq, bufsize, 0))) { |
06b12970 | 1270 | return 0; |
0c87e93e | 1271 | } |
fbe78f4f AL |
1272 | } |
1273 | ||
0c87e93e | 1274 | virtio_queue_set_notification(q->rx_vq, 0); |
fbe78f4f AL |
1275 | return 1; |
1276 | } | |
1277 | ||
1399c60d | 1278 | static void virtio_net_hdr_swap(VirtIODevice *vdev, struct virtio_net_hdr *hdr) |
032a74a1 | 1279 | { |
1399c60d RR |
1280 | virtio_tswap16s(vdev, &hdr->hdr_len); |
1281 | virtio_tswap16s(vdev, &hdr->gso_size); | |
1282 | virtio_tswap16s(vdev, &hdr->csum_start); | |
1283 | virtio_tswap16s(vdev, &hdr->csum_offset); | |
032a74a1 CLG |
1284 | } |
1285 | ||
1d41b0c1 AL |
1286 | /* dhclient uses AF_PACKET but doesn't pass auxdata to the kernel so |
1287 | * it never finds out that the packets don't have valid checksums. This | |
1288 | * causes dhclient to get upset. Fedora's carried a patch for ages to | |
1289 | * fix this with Xen but it hasn't appeared in an upstream release of | |
1290 | * dhclient yet. | |
1291 | * | |
1292 | * To avoid breaking existing guests, we catch udp packets and add | |
1293 | * checksums. This is terrible but it's better than hacking the guest | |
1294 | * kernels. | |
1295 | * | |
1296 | * N.B. if we introduce a zero-copy API, this operation is no longer free so | |
1297 | * we should provide a mechanism to disable it to avoid polluting the host | |
1298 | * cache. | |
1299 | */ | |
1300 | static void work_around_broken_dhclient(struct virtio_net_hdr *hdr, | |
22cc84db | 1301 | uint8_t *buf, size_t size) |
1d41b0c1 AL |
1302 | { |
1303 | if ((hdr->flags & VIRTIO_NET_HDR_F_NEEDS_CSUM) && /* missing csum */ | |
1304 | (size > 27 && size < 1500) && /* normal sized MTU */ | |
1305 | (buf[12] == 0x08 && buf[13] == 0x00) && /* ethertype == IPv4 */ | |
1306 | (buf[23] == 17) && /* ip.protocol == UDP */ | |
1307 | (buf[34] == 0 && buf[35] == 67)) { /* udp.srcport == bootps */ | |
22cc84db | 1308 | net_checksum_calculate(buf, size); |
1d41b0c1 AL |
1309 | hdr->flags &= ~VIRTIO_NET_HDR_F_NEEDS_CSUM; |
1310 | } | |
1311 | } | |
1312 | ||
280598b7 MT |
1313 | static void receive_header(VirtIONet *n, const struct iovec *iov, int iov_cnt, |
1314 | const void *buf, size_t size) | |
fbe78f4f | 1315 | { |
3a330134 | 1316 | if (n->has_vnet_hdr) { |
22cc84db MT |
1317 | /* FIXME this cast is evil */ |
1318 | void *wbuf = (void *)buf; | |
280598b7 MT |
1319 | work_around_broken_dhclient(wbuf, wbuf + n->host_hdr_len, |
1320 | size - n->host_hdr_len); | |
1bfa316c GK |
1321 | |
1322 | if (n->needs_vnet_hdr_swap) { | |
1323 | virtio_net_hdr_swap(VIRTIO_DEVICE(n), wbuf); | |
1324 | } | |
280598b7 | 1325 | iov_from_buf(iov, iov_cnt, 0, buf, sizeof(struct virtio_net_hdr)); |
22cc84db MT |
1326 | } else { |
1327 | struct virtio_net_hdr hdr = { | |
1328 | .flags = 0, | |
1329 | .gso_type = VIRTIO_NET_HDR_GSO_NONE | |
1330 | }; | |
1331 | iov_from_buf(iov, iov_cnt, 0, &hdr, sizeof hdr); | |
3a330134 | 1332 | } |
fbe78f4f AL |
1333 | } |
1334 | ||
3831ab20 AL |
1335 | static int receive_filter(VirtIONet *n, const uint8_t *buf, int size) |
1336 | { | |
1337 | static const uint8_t bcast[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; | |
f21c0ed9 | 1338 | static const uint8_t vlan[] = {0x81, 0x00}; |
3831ab20 | 1339 | uint8_t *ptr = (uint8_t *)buf; |
b6503ed9 | 1340 | int i; |
3831ab20 AL |
1341 | |
1342 | if (n->promisc) | |
1343 | return 1; | |
1344 | ||
e043ebc6 | 1345 | ptr += n->host_hdr_len; |
3a330134 | 1346 | |
f21c0ed9 | 1347 | if (!memcmp(&ptr[12], vlan, sizeof(vlan))) { |
7542d3e7 | 1348 | int vid = lduw_be_p(ptr + 14) & 0xfff; |
f21c0ed9 AL |
1349 | if (!(n->vlans[vid >> 5] & (1U << (vid & 0x1f)))) |
1350 | return 0; | |
1351 | } | |
1352 | ||
bbe2f399 AW |
1353 | if (ptr[0] & 1) { // multicast |
1354 | if (!memcmp(ptr, bcast, sizeof(bcast))) { | |
015cb166 AW |
1355 | return !n->nobcast; |
1356 | } else if (n->nomulti) { | |
1357 | return 0; | |
8fd2a2f1 | 1358 | } else if (n->allmulti || n->mac_table.multi_overflow) { |
bbe2f399 AW |
1359 | return 1; |
1360 | } | |
2d9aba39 AW |
1361 | |
1362 | for (i = n->mac_table.first_multi; i < n->mac_table.in_use; i++) { | |
1363 | if (!memcmp(ptr, &n->mac_table.macs[i * ETH_ALEN], ETH_ALEN)) { | |
1364 | return 1; | |
1365 | } | |
1366 | } | |
bbe2f399 | 1367 | } else { // unicast |
015cb166 AW |
1368 | if (n->nouni) { |
1369 | return 0; | |
1370 | } else if (n->alluni || n->mac_table.uni_overflow) { | |
8fd2a2f1 AW |
1371 | return 1; |
1372 | } else if (!memcmp(ptr, n->mac, ETH_ALEN)) { | |
bbe2f399 AW |
1373 | return 1; |
1374 | } | |
3831ab20 | 1375 | |
2d9aba39 AW |
1376 | for (i = 0; i < n->mac_table.first_multi; i++) { |
1377 | if (!memcmp(ptr, &n->mac_table.macs[i * ETH_ALEN], ETH_ALEN)) { | |
1378 | return 1; | |
1379 | } | |
1380 | } | |
b6503ed9 AL |
1381 | } |
1382 | ||
3831ab20 AL |
1383 | return 0; |
1384 | } | |
1385 | ||
97cd965c PB |
1386 | static ssize_t virtio_net_receive_rcu(NetClientState *nc, const uint8_t *buf, |
1387 | size_t size) | |
fbe78f4f | 1388 | { |
cc1f0f45 | 1389 | VirtIONet *n = qemu_get_nic_opaque(nc); |
fed699f9 | 1390 | VirtIONetQueue *q = virtio_net_get_subqueue(nc); |
17a0ca55 | 1391 | VirtIODevice *vdev = VIRTIO_DEVICE(n); |
63c58728 MT |
1392 | struct iovec mhdr_sg[VIRTQUEUE_MAX_SIZE]; |
1393 | struct virtio_net_hdr_mrg_rxbuf mhdr; | |
1394 | unsigned mhdr_cnt = 0; | |
22cc84db | 1395 | size_t offset, i, guest_offset; |
fbe78f4f | 1396 | |
fed699f9 | 1397 | if (!virtio_net_can_receive(nc)) { |
cdd5cc12 | 1398 | return -1; |
b356f76d | 1399 | } |
cdd5cc12 | 1400 | |
940cda94 | 1401 | /* hdr_len refers to the header we supply to the guest */ |
0c87e93e | 1402 | if (!virtio_net_has_buffers(q, size + n->guest_hdr_len - n->host_hdr_len)) { |
8aeff62d | 1403 | return 0; |
0c87e93e | 1404 | } |
fbe78f4f | 1405 | |
3831ab20 | 1406 | if (!receive_filter(n, buf, size)) |
4f1c942b | 1407 | return size; |
3831ab20 | 1408 | |
fbe78f4f AL |
1409 | offset = i = 0; |
1410 | ||
1411 | while (offset < size) { | |
51b19ebe | 1412 | VirtQueueElement *elem; |
fbe78f4f | 1413 | int len, total; |
51b19ebe | 1414 | const struct iovec *sg; |
fbe78f4f | 1415 | |
22c253d9 | 1416 | total = 0; |
fbe78f4f | 1417 | |
51b19ebe PB |
1418 | elem = virtqueue_pop(q->rx_vq, sizeof(VirtQueueElement)); |
1419 | if (!elem) { | |
ba10b9c0 GK |
1420 | if (i) { |
1421 | virtio_error(vdev, "virtio-net unexpected empty queue: " | |
1422 | "i %zd mergeable %d offset %zd, size %zd, " | |
1423 | "guest hdr len %zd, host hdr len %zd " | |
1424 | "guest features 0x%" PRIx64, | |
1425 | i, n->mergeable_rx_bufs, offset, size, | |
1426 | n->guest_hdr_len, n->host_hdr_len, | |
1427 | vdev->guest_features); | |
1428 | } | |
1429 | return -1; | |
fbe78f4f AL |
1430 | } |
1431 | ||
51b19ebe | 1432 | if (elem->in_num < 1) { |
ba10b9c0 GK |
1433 | virtio_error(vdev, |
1434 | "virtio-net receive queue contains no in buffers"); | |
1435 | virtqueue_detach_element(q->rx_vq, elem, 0); | |
1436 | g_free(elem); | |
1437 | return -1; | |
fbe78f4f AL |
1438 | } |
1439 | ||
51b19ebe | 1440 | sg = elem->in_sg; |
fbe78f4f | 1441 | if (i == 0) { |
c8d28e7e | 1442 | assert(offset == 0); |
63c58728 MT |
1443 | if (n->mergeable_rx_bufs) { |
1444 | mhdr_cnt = iov_copy(mhdr_sg, ARRAY_SIZE(mhdr_sg), | |
51b19ebe | 1445 | sg, elem->in_num, |
63c58728 MT |
1446 | offsetof(typeof(mhdr), num_buffers), |
1447 | sizeof(mhdr.num_buffers)); | |
1448 | } | |
fbe78f4f | 1449 | |
51b19ebe | 1450 | receive_header(n, sg, elem->in_num, buf, size); |
c8d28e7e | 1451 | offset = n->host_hdr_len; |
e35e23f6 | 1452 | total += n->guest_hdr_len; |
22cc84db MT |
1453 | guest_offset = n->guest_hdr_len; |
1454 | } else { | |
1455 | guest_offset = 0; | |
fbe78f4f AL |
1456 | } |
1457 | ||
1458 | /* copy in packet. ugh */ | |
51b19ebe | 1459 | len = iov_from_buf(sg, elem->in_num, guest_offset, |
dcf6f5e1 | 1460 | buf + offset, size - offset); |
fbe78f4f | 1461 | total += len; |
279a4253 MT |
1462 | offset += len; |
1463 | /* If buffers can't be merged, at this point we | |
1464 | * must have consumed the complete packet. | |
1465 | * Otherwise, drop it. */ | |
1466 | if (!n->mergeable_rx_bufs && offset < size) { | |
27e57efe | 1467 | virtqueue_unpop(q->rx_vq, elem, total); |
51b19ebe | 1468 | g_free(elem); |
279a4253 MT |
1469 | return size; |
1470 | } | |
fbe78f4f AL |
1471 | |
1472 | /* signal other side */ | |
51b19ebe PB |
1473 | virtqueue_fill(q->rx_vq, elem, total, i++); |
1474 | g_free(elem); | |
fbe78f4f AL |
1475 | } |
1476 | ||
63c58728 | 1477 | if (mhdr_cnt) { |
1399c60d | 1478 | virtio_stw_p(vdev, &mhdr.num_buffers, i); |
63c58728 MT |
1479 | iov_from_buf(mhdr_sg, mhdr_cnt, |
1480 | 0, | |
1481 | &mhdr.num_buffers, sizeof mhdr.num_buffers); | |
44b15bc5 | 1482 | } |
fbe78f4f | 1483 | |
0c87e93e | 1484 | virtqueue_flush(q->rx_vq, i); |
17a0ca55 | 1485 | virtio_notify(vdev, q->rx_vq); |
4f1c942b MM |
1486 | |
1487 | return size; | |
fbe78f4f AL |
1488 | } |
1489 | ||
2974e916 | 1490 | static ssize_t virtio_net_do_receive(NetClientState *nc, const uint8_t *buf, |
97cd965c PB |
1491 | size_t size) |
1492 | { | |
068ddfa9 | 1493 | RCU_READ_LOCK_GUARD(); |
97cd965c | 1494 | |
068ddfa9 | 1495 | return virtio_net_receive_rcu(nc, buf, size); |
97cd965c PB |
1496 | } |
1497 | ||
2974e916 YB |
1498 | static void virtio_net_rsc_extract_unit4(VirtioNetRscChain *chain, |
1499 | const uint8_t *buf, | |
1500 | VirtioNetRscUnit *unit) | |
1501 | { | |
1502 | uint16_t ip_hdrlen; | |
1503 | struct ip_header *ip; | |
1504 | ||
1505 | ip = (struct ip_header *)(buf + chain->n->guest_hdr_len | |
1506 | + sizeof(struct eth_header)); | |
1507 | unit->ip = (void *)ip; | |
1508 | ip_hdrlen = (ip->ip_ver_len & 0xF) << 2; | |
1509 | unit->ip_plen = &ip->ip_len; | |
1510 | unit->tcp = (struct tcp_header *)(((uint8_t *)unit->ip) + ip_hdrlen); | |
1511 | unit->tcp_hdrlen = (htons(unit->tcp->th_offset_flags) & 0xF000) >> 10; | |
1512 | unit->payload = htons(*unit->ip_plen) - ip_hdrlen - unit->tcp_hdrlen; | |
1513 | } | |
1514 | ||
1515 | static void virtio_net_rsc_extract_unit6(VirtioNetRscChain *chain, | |
1516 | const uint8_t *buf, | |
1517 | VirtioNetRscUnit *unit) | |
1518 | { | |
1519 | struct ip6_header *ip6; | |
1520 | ||
1521 | ip6 = (struct ip6_header *)(buf + chain->n->guest_hdr_len | |
1522 | + sizeof(struct eth_header)); | |
1523 | unit->ip = ip6; | |
1524 | unit->ip_plen = &(ip6->ip6_ctlun.ip6_un1.ip6_un1_plen); | |
1525 | unit->tcp = (struct tcp_header *)(((uint8_t *)unit->ip)\ | |
1526 | + sizeof(struct ip6_header)); | |
1527 | unit->tcp_hdrlen = (htons(unit->tcp->th_offset_flags) & 0xF000) >> 10; | |
1528 | ||
1529 | /* There is a difference between payload lenght in ipv4 and v6, | |
1530 | ip header is excluded in ipv6 */ | |
1531 | unit->payload = htons(*unit->ip_plen) - unit->tcp_hdrlen; | |
1532 | } | |
1533 | ||
1534 | static size_t virtio_net_rsc_drain_seg(VirtioNetRscChain *chain, | |
1535 | VirtioNetRscSeg *seg) | |
1536 | { | |
1537 | int ret; | |
1538 | struct virtio_net_hdr *h; | |
1539 | ||
1540 | h = (struct virtio_net_hdr *)seg->buf; | |
1541 | h->flags = 0; | |
1542 | h->gso_type = VIRTIO_NET_HDR_GSO_NONE; | |
1543 | ||
1544 | if (seg->is_coalesced) { | |
1545 | *virtio_net_rsc_ext_num_packets(h) = seg->packets; | |
1546 | *virtio_net_rsc_ext_num_dupacks(h) = seg->dup_ack; | |
1547 | h->flags = VIRTIO_NET_HDR_F_RSC_INFO; | |
1548 | if (chain->proto == ETH_P_IP) { | |
1549 | h->gso_type = VIRTIO_NET_HDR_GSO_TCPV4; | |
1550 | } else { | |
1551 | h->gso_type = VIRTIO_NET_HDR_GSO_TCPV6; | |
1552 | } | |
1553 | } | |
1554 | ||
1555 | ret = virtio_net_do_receive(seg->nc, seg->buf, seg->size); | |
1556 | QTAILQ_REMOVE(&chain->buffers, seg, next); | |
1557 | g_free(seg->buf); | |
1558 | g_free(seg); | |
1559 | ||
1560 | return ret; | |
1561 | } | |
1562 | ||
1563 | static void virtio_net_rsc_purge(void *opq) | |
1564 | { | |
1565 | VirtioNetRscSeg *seg, *rn; | |
1566 | VirtioNetRscChain *chain = (VirtioNetRscChain *)opq; | |
1567 | ||
1568 | QTAILQ_FOREACH_SAFE(seg, &chain->buffers, next, rn) { | |
1569 | if (virtio_net_rsc_drain_seg(chain, seg) == 0) { | |
1570 | chain->stat.purge_failed++; | |
1571 | continue; | |
1572 | } | |
1573 | } | |
1574 | ||
1575 | chain->stat.timer++; | |
1576 | if (!QTAILQ_EMPTY(&chain->buffers)) { | |
1577 | timer_mod(chain->drain_timer, | |
1578 | qemu_clock_get_ns(QEMU_CLOCK_HOST) + chain->n->rsc_timeout); | |
1579 | } | |
1580 | } | |
1581 | ||
1582 | static void virtio_net_rsc_cleanup(VirtIONet *n) | |
1583 | { | |
1584 | VirtioNetRscChain *chain, *rn_chain; | |
1585 | VirtioNetRscSeg *seg, *rn_seg; | |
1586 | ||
1587 | QTAILQ_FOREACH_SAFE(chain, &n->rsc_chains, next, rn_chain) { | |
1588 | QTAILQ_FOREACH_SAFE(seg, &chain->buffers, next, rn_seg) { | |
1589 | QTAILQ_REMOVE(&chain->buffers, seg, next); | |
1590 | g_free(seg->buf); | |
1591 | g_free(seg); | |
1592 | } | |
1593 | ||
1594 | timer_del(chain->drain_timer); | |
1595 | timer_free(chain->drain_timer); | |
1596 | QTAILQ_REMOVE(&n->rsc_chains, chain, next); | |
1597 | g_free(chain); | |
1598 | } | |
1599 | } | |
1600 | ||
1601 | static void virtio_net_rsc_cache_buf(VirtioNetRscChain *chain, | |
1602 | NetClientState *nc, | |
1603 | const uint8_t *buf, size_t size) | |
1604 | { | |
1605 | uint16_t hdr_len; | |
1606 | VirtioNetRscSeg *seg; | |
1607 | ||
1608 | hdr_len = chain->n->guest_hdr_len; | |
1609 | seg = g_malloc(sizeof(VirtioNetRscSeg)); | |
1610 | seg->buf = g_malloc(hdr_len + sizeof(struct eth_header) | |
1611 | + sizeof(struct ip6_header) + VIRTIO_NET_MAX_TCP_PAYLOAD); | |
1612 | memcpy(seg->buf, buf, size); | |
1613 | seg->size = size; | |
1614 | seg->packets = 1; | |
1615 | seg->dup_ack = 0; | |
1616 | seg->is_coalesced = 0; | |
1617 | seg->nc = nc; | |
1618 | ||
1619 | QTAILQ_INSERT_TAIL(&chain->buffers, seg, next); | |
1620 | chain->stat.cache++; | |
1621 | ||
1622 | switch (chain->proto) { | |
1623 | case ETH_P_IP: | |
1624 | virtio_net_rsc_extract_unit4(chain, seg->buf, &seg->unit); | |
1625 | break; | |
1626 | case ETH_P_IPV6: | |
1627 | virtio_net_rsc_extract_unit6(chain, seg->buf, &seg->unit); | |
1628 | break; | |
1629 | default: | |
1630 | g_assert_not_reached(); | |
1631 | } | |
1632 | } | |
1633 | ||
1634 | static int32_t virtio_net_rsc_handle_ack(VirtioNetRscChain *chain, | |
1635 | VirtioNetRscSeg *seg, | |
1636 | const uint8_t *buf, | |
1637 | struct tcp_header *n_tcp, | |
1638 | struct tcp_header *o_tcp) | |
1639 | { | |
1640 | uint32_t nack, oack; | |
1641 | uint16_t nwin, owin; | |
1642 | ||
1643 | nack = htonl(n_tcp->th_ack); | |
1644 | nwin = htons(n_tcp->th_win); | |
1645 | oack = htonl(o_tcp->th_ack); | |
1646 | owin = htons(o_tcp->th_win); | |
1647 | ||
1648 | if ((nack - oack) >= VIRTIO_NET_MAX_TCP_PAYLOAD) { | |
1649 | chain->stat.ack_out_of_win++; | |
1650 | return RSC_FINAL; | |
1651 | } else if (nack == oack) { | |
1652 | /* duplicated ack or window probe */ | |
1653 | if (nwin == owin) { | |
1654 | /* duplicated ack, add dup ack count due to whql test up to 1 */ | |
1655 | chain->stat.dup_ack++; | |
1656 | return RSC_FINAL; | |
1657 | } else { | |
1658 | /* Coalesce window update */ | |
1659 | o_tcp->th_win = n_tcp->th_win; | |
1660 | chain->stat.win_update++; | |
1661 | return RSC_COALESCE; | |
1662 | } | |
1663 | } else { | |
1664 | /* pure ack, go to 'C', finalize*/ | |
1665 | chain->stat.pure_ack++; | |
1666 | return RSC_FINAL; | |
1667 | } | |
1668 | } | |
1669 | ||
1670 | static int32_t virtio_net_rsc_coalesce_data(VirtioNetRscChain *chain, | |
1671 | VirtioNetRscSeg *seg, | |
1672 | const uint8_t *buf, | |
1673 | VirtioNetRscUnit *n_unit) | |
1674 | { | |
1675 | void *data; | |
1676 | uint16_t o_ip_len; | |
1677 | uint32_t nseq, oseq; | |
1678 | VirtioNetRscUnit *o_unit; | |
1679 | ||
1680 | o_unit = &seg->unit; | |
1681 | o_ip_len = htons(*o_unit->ip_plen); | |
1682 | nseq = htonl(n_unit->tcp->th_seq); | |
1683 | oseq = htonl(o_unit->tcp->th_seq); | |
1684 | ||
1685 | /* out of order or retransmitted. */ | |
1686 | if ((nseq - oseq) > VIRTIO_NET_MAX_TCP_PAYLOAD) { | |
1687 | chain->stat.data_out_of_win++; | |
1688 | return RSC_FINAL; | |
1689 | } | |
1690 | ||
1691 | data = ((uint8_t *)n_unit->tcp) + n_unit->tcp_hdrlen; | |
1692 | if (nseq == oseq) { | |
1693 | if ((o_unit->payload == 0) && n_unit->payload) { | |
1694 | /* From no payload to payload, normal case, not a dup ack or etc */ | |
1695 | chain->stat.data_after_pure_ack++; | |
1696 | goto coalesce; | |
1697 | } else { | |
1698 | return virtio_net_rsc_handle_ack(chain, seg, buf, | |
1699 | n_unit->tcp, o_unit->tcp); | |
1700 | } | |
1701 | } else if ((nseq - oseq) != o_unit->payload) { | |
1702 | /* Not a consistent packet, out of order */ | |
1703 | chain->stat.data_out_of_order++; | |
1704 | return RSC_FINAL; | |
1705 | } else { | |
1706 | coalesce: | |
1707 | if ((o_ip_len + n_unit->payload) > chain->max_payload) { | |
1708 | chain->stat.over_size++; | |
1709 | return RSC_FINAL; | |
1710 | } | |
1711 | ||
1712 | /* Here comes the right data, the payload length in v4/v6 is different, | |
1713 | so use the field value to update and record the new data len */ | |
1714 | o_unit->payload += n_unit->payload; /* update new data len */ | |
1715 | ||
1716 | /* update field in ip header */ | |
1717 | *o_unit->ip_plen = htons(o_ip_len + n_unit->payload); | |
1718 | ||
1719 | /* Bring 'PUSH' big, the whql test guide says 'PUSH' can be coalesced | |
1720 | for windows guest, while this may change the behavior for linux | |
1721 | guest (only if it uses RSC feature). */ | |
1722 | o_unit->tcp->th_offset_flags = n_unit->tcp->th_offset_flags; | |
1723 | ||
1724 | o_unit->tcp->th_ack = n_unit->tcp->th_ack; | |
1725 | o_unit->tcp->th_win = n_unit->tcp->th_win; | |
1726 | ||
1727 | memmove(seg->buf + seg->size, data, n_unit->payload); | |
1728 | seg->size += n_unit->payload; | |
1729 | seg->packets++; | |
1730 | chain->stat.coalesced++; | |
1731 | return RSC_COALESCE; | |
1732 | } | |
1733 | } | |
1734 | ||
1735 | static int32_t virtio_net_rsc_coalesce4(VirtioNetRscChain *chain, | |
1736 | VirtioNetRscSeg *seg, | |
1737 | const uint8_t *buf, size_t size, | |
1738 | VirtioNetRscUnit *unit) | |
1739 | { | |
1740 | struct ip_header *ip1, *ip2; | |
1741 | ||
1742 | ip1 = (struct ip_header *)(unit->ip); | |
1743 | ip2 = (struct ip_header *)(seg->unit.ip); | |
1744 | if ((ip1->ip_src ^ ip2->ip_src) || (ip1->ip_dst ^ ip2->ip_dst) | |
1745 | || (unit->tcp->th_sport ^ seg->unit.tcp->th_sport) | |
1746 | || (unit->tcp->th_dport ^ seg->unit.tcp->th_dport)) { | |
1747 | chain->stat.no_match++; | |
1748 | return RSC_NO_MATCH; | |
1749 | } | |
1750 | ||
1751 | return virtio_net_rsc_coalesce_data(chain, seg, buf, unit); | |
1752 | } | |
1753 | ||
1754 | static int32_t virtio_net_rsc_coalesce6(VirtioNetRscChain *chain, | |
1755 | VirtioNetRscSeg *seg, | |
1756 | const uint8_t *buf, size_t size, | |
1757 | VirtioNetRscUnit *unit) | |
1758 | { | |
1759 | struct ip6_header *ip1, *ip2; | |
1760 | ||
1761 | ip1 = (struct ip6_header *)(unit->ip); | |
1762 | ip2 = (struct ip6_header *)(seg->unit.ip); | |
1763 | if (memcmp(&ip1->ip6_src, &ip2->ip6_src, sizeof(struct in6_address)) | |
1764 | || memcmp(&ip1->ip6_dst, &ip2->ip6_dst, sizeof(struct in6_address)) | |
1765 | || (unit->tcp->th_sport ^ seg->unit.tcp->th_sport) | |
1766 | || (unit->tcp->th_dport ^ seg->unit.tcp->th_dport)) { | |
1767 | chain->stat.no_match++; | |
1768 | return RSC_NO_MATCH; | |
1769 | } | |
1770 | ||
1771 | return virtio_net_rsc_coalesce_data(chain, seg, buf, unit); | |
1772 | } | |
1773 | ||
1774 | /* Packets with 'SYN' should bypass, other flag should be sent after drain | |
1775 | * to prevent out of order */ | |
1776 | static int virtio_net_rsc_tcp_ctrl_check(VirtioNetRscChain *chain, | |
1777 | struct tcp_header *tcp) | |
1778 | { | |
1779 | uint16_t tcp_hdr; | |
1780 | uint16_t tcp_flag; | |
1781 | ||
1782 | tcp_flag = htons(tcp->th_offset_flags); | |
1783 | tcp_hdr = (tcp_flag & VIRTIO_NET_TCP_HDR_LENGTH) >> 10; | |
1784 | tcp_flag &= VIRTIO_NET_TCP_FLAG; | |
1785 | tcp_flag = htons(tcp->th_offset_flags) & 0x3F; | |
1786 | if (tcp_flag & TH_SYN) { | |
1787 | chain->stat.tcp_syn++; | |
1788 | return RSC_BYPASS; | |
1789 | } | |
1790 | ||
1791 | if (tcp_flag & (TH_FIN | TH_URG | TH_RST | TH_ECE | TH_CWR)) { | |
1792 | chain->stat.tcp_ctrl_drain++; | |
1793 | return RSC_FINAL; | |
1794 | } | |
1795 | ||
1796 | if (tcp_hdr > sizeof(struct tcp_header)) { | |
1797 | chain->stat.tcp_all_opt++; | |
1798 | return RSC_FINAL; | |
1799 | } | |
1800 | ||
1801 | return RSC_CANDIDATE; | |
1802 | } | |
1803 | ||
1804 | static size_t virtio_net_rsc_do_coalesce(VirtioNetRscChain *chain, | |
1805 | NetClientState *nc, | |
1806 | const uint8_t *buf, size_t size, | |
1807 | VirtioNetRscUnit *unit) | |
1808 | { | |
1809 | int ret; | |
1810 | VirtioNetRscSeg *seg, *nseg; | |
1811 | ||
1812 | if (QTAILQ_EMPTY(&chain->buffers)) { | |
1813 | chain->stat.empty_cache++; | |
1814 | virtio_net_rsc_cache_buf(chain, nc, buf, size); | |
1815 | timer_mod(chain->drain_timer, | |
1816 | qemu_clock_get_ns(QEMU_CLOCK_HOST) + chain->n->rsc_timeout); | |
1817 | return size; | |
1818 | } | |
1819 | ||
1820 | QTAILQ_FOREACH_SAFE(seg, &chain->buffers, next, nseg) { | |
1821 | if (chain->proto == ETH_P_IP) { | |
1822 | ret = virtio_net_rsc_coalesce4(chain, seg, buf, size, unit); | |
1823 | } else { | |
1824 | ret = virtio_net_rsc_coalesce6(chain, seg, buf, size, unit); | |
1825 | } | |
1826 | ||
1827 | if (ret == RSC_FINAL) { | |
1828 | if (virtio_net_rsc_drain_seg(chain, seg) == 0) { | |
1829 | /* Send failed */ | |
1830 | chain->stat.final_failed++; | |
1831 | return 0; | |
1832 | } | |
1833 | ||
1834 | /* Send current packet */ | |
1835 | return virtio_net_do_receive(nc, buf, size); | |
1836 | } else if (ret == RSC_NO_MATCH) { | |
1837 | continue; | |
1838 | } else { | |
1839 | /* Coalesced, mark coalesced flag to tell calc cksum for ipv4 */ | |
1840 | seg->is_coalesced = 1; | |
1841 | return size; | |
1842 | } | |
1843 | } | |
1844 | ||
1845 | chain->stat.no_match_cache++; | |
1846 | virtio_net_rsc_cache_buf(chain, nc, buf, size); | |
1847 | return size; | |
1848 | } | |
1849 | ||
1850 | /* Drain a connection data, this is to avoid out of order segments */ | |
1851 | static size_t virtio_net_rsc_drain_flow(VirtioNetRscChain *chain, | |
1852 | NetClientState *nc, | |
1853 | const uint8_t *buf, size_t size, | |
1854 | uint16_t ip_start, uint16_t ip_size, | |
1855 | uint16_t tcp_port) | |
1856 | { | |
1857 | VirtioNetRscSeg *seg, *nseg; | |
1858 | uint32_t ppair1, ppair2; | |
1859 | ||
1860 | ppair1 = *(uint32_t *)(buf + tcp_port); | |
1861 | QTAILQ_FOREACH_SAFE(seg, &chain->buffers, next, nseg) { | |
1862 | ppair2 = *(uint32_t *)(seg->buf + tcp_port); | |
1863 | if (memcmp(buf + ip_start, seg->buf + ip_start, ip_size) | |
1864 | || (ppair1 != ppair2)) { | |
1865 | continue; | |
1866 | } | |
1867 | if (virtio_net_rsc_drain_seg(chain, seg) == 0) { | |
1868 | chain->stat.drain_failed++; | |
1869 | } | |
1870 | ||
1871 | break; | |
1872 | } | |
1873 | ||
1874 | return virtio_net_do_receive(nc, buf, size); | |
1875 | } | |
1876 | ||
1877 | static int32_t virtio_net_rsc_sanity_check4(VirtioNetRscChain *chain, | |
1878 | struct ip_header *ip, | |
1879 | const uint8_t *buf, size_t size) | |
1880 | { | |
1881 | uint16_t ip_len; | |
1882 | ||
1883 | /* Not an ipv4 packet */ | |
1884 | if (((ip->ip_ver_len & 0xF0) >> 4) != IP_HEADER_VERSION_4) { | |
1885 | chain->stat.ip_option++; | |
1886 | return RSC_BYPASS; | |
1887 | } | |
1888 | ||
1889 | /* Don't handle packets with ip option */ | |
1890 | if ((ip->ip_ver_len & 0xF) != VIRTIO_NET_IP4_HEADER_LENGTH) { | |
1891 | chain->stat.ip_option++; | |
1892 | return RSC_BYPASS; | |
1893 | } | |
1894 | ||
1895 | if (ip->ip_p != IPPROTO_TCP) { | |
1896 | chain->stat.bypass_not_tcp++; | |
1897 | return RSC_BYPASS; | |
1898 | } | |
1899 | ||
1900 | /* Don't handle packets with ip fragment */ | |
1901 | if (!(htons(ip->ip_off) & IP_DF)) { | |
1902 | chain->stat.ip_frag++; | |
1903 | return RSC_BYPASS; | |
1904 | } | |
1905 | ||
1906 | /* Don't handle packets with ecn flag */ | |
1907 | if (IPTOS_ECN(ip->ip_tos)) { | |
1908 | chain->stat.ip_ecn++; | |
1909 | return RSC_BYPASS; | |
1910 | } | |
1911 | ||
1912 | ip_len = htons(ip->ip_len); | |
1913 | if (ip_len < (sizeof(struct ip_header) + sizeof(struct tcp_header)) | |
1914 | || ip_len > (size - chain->n->guest_hdr_len - | |
1915 | sizeof(struct eth_header))) { | |
1916 | chain->stat.ip_hacked++; | |
1917 | return RSC_BYPASS; | |
1918 | } | |
1919 | ||
1920 | return RSC_CANDIDATE; | |
1921 | } | |
1922 | ||
1923 | static size_t virtio_net_rsc_receive4(VirtioNetRscChain *chain, | |
1924 | NetClientState *nc, | |
1925 | const uint8_t *buf, size_t size) | |
1926 | { | |
1927 | int32_t ret; | |
1928 | uint16_t hdr_len; | |
1929 | VirtioNetRscUnit unit; | |
1930 | ||
1931 | hdr_len = ((VirtIONet *)(chain->n))->guest_hdr_len; | |
1932 | ||
1933 | if (size < (hdr_len + sizeof(struct eth_header) + sizeof(struct ip_header) | |
1934 | + sizeof(struct tcp_header))) { | |
1935 | chain->stat.bypass_not_tcp++; | |
1936 | return virtio_net_do_receive(nc, buf, size); | |
1937 | } | |
1938 | ||
1939 | virtio_net_rsc_extract_unit4(chain, buf, &unit); | |
1940 | if (virtio_net_rsc_sanity_check4(chain, unit.ip, buf, size) | |
1941 | != RSC_CANDIDATE) { | |
1942 | return virtio_net_do_receive(nc, buf, size); | |
1943 | } | |
1944 | ||
1945 | ret = virtio_net_rsc_tcp_ctrl_check(chain, unit.tcp); | |
1946 | if (ret == RSC_BYPASS) { | |
1947 | return virtio_net_do_receive(nc, buf, size); | |
1948 | } else if (ret == RSC_FINAL) { | |
1949 | return virtio_net_rsc_drain_flow(chain, nc, buf, size, | |
1950 | ((hdr_len + sizeof(struct eth_header)) + 12), | |
1951 | VIRTIO_NET_IP4_ADDR_SIZE, | |
1952 | hdr_len + sizeof(struct eth_header) + sizeof(struct ip_header)); | |
1953 | } | |
1954 | ||
1955 | return virtio_net_rsc_do_coalesce(chain, nc, buf, size, &unit); | |
1956 | } | |
1957 | ||
1958 | static int32_t virtio_net_rsc_sanity_check6(VirtioNetRscChain *chain, | |
1959 | struct ip6_header *ip6, | |
1960 | const uint8_t *buf, size_t size) | |
1961 | { | |
1962 | uint16_t ip_len; | |
1963 | ||
1964 | if (((ip6->ip6_ctlun.ip6_un1.ip6_un1_flow & 0xF0) >> 4) | |
1965 | != IP_HEADER_VERSION_6) { | |
1966 | return RSC_BYPASS; | |
1967 | } | |
1968 | ||
1969 | /* Both option and protocol is checked in this */ | |
1970 | if (ip6->ip6_ctlun.ip6_un1.ip6_un1_nxt != IPPROTO_TCP) { | |
1971 | chain->stat.bypass_not_tcp++; | |
1972 | return RSC_BYPASS; | |
1973 | } | |
1974 | ||
1975 | ip_len = htons(ip6->ip6_ctlun.ip6_un1.ip6_un1_plen); | |
1976 | if (ip_len < sizeof(struct tcp_header) || | |
1977 | ip_len > (size - chain->n->guest_hdr_len - sizeof(struct eth_header) | |
1978 | - sizeof(struct ip6_header))) { | |
1979 | chain->stat.ip_hacked++; | |
1980 | return RSC_BYPASS; | |
1981 | } | |
1982 | ||
1983 | /* Don't handle packets with ecn flag */ | |
1984 | if (IP6_ECN(ip6->ip6_ctlun.ip6_un3.ip6_un3_ecn)) { | |
1985 | chain->stat.ip_ecn++; | |
1986 | return RSC_BYPASS; | |
1987 | } | |
1988 | ||
1989 | return RSC_CANDIDATE; | |
1990 | } | |
1991 | ||
1992 | static size_t virtio_net_rsc_receive6(void *opq, NetClientState *nc, | |
1993 | const uint8_t *buf, size_t size) | |
1994 | { | |
1995 | int32_t ret; | |
1996 | uint16_t hdr_len; | |
1997 | VirtioNetRscChain *chain; | |
1998 | VirtioNetRscUnit unit; | |
1999 | ||
2000 | chain = (VirtioNetRscChain *)opq; | |
2001 | hdr_len = ((VirtIONet *)(chain->n))->guest_hdr_len; | |
2002 | ||
2003 | if (size < (hdr_len + sizeof(struct eth_header) + sizeof(struct ip6_header) | |
2004 | + sizeof(tcp_header))) { | |
2005 | return virtio_net_do_receive(nc, buf, size); | |
2006 | } | |
2007 | ||
2008 | virtio_net_rsc_extract_unit6(chain, buf, &unit); | |
2009 | if (RSC_CANDIDATE != virtio_net_rsc_sanity_check6(chain, | |
2010 | unit.ip, buf, size)) { | |
2011 | return virtio_net_do_receive(nc, buf, size); | |
2012 | } | |
2013 | ||
2014 | ret = virtio_net_rsc_tcp_ctrl_check(chain, unit.tcp); | |
2015 | if (ret == RSC_BYPASS) { | |
2016 | return virtio_net_do_receive(nc, buf, size); | |
2017 | } else if (ret == RSC_FINAL) { | |
2018 | return virtio_net_rsc_drain_flow(chain, nc, buf, size, | |
2019 | ((hdr_len + sizeof(struct eth_header)) + 8), | |
2020 | VIRTIO_NET_IP6_ADDR_SIZE, | |
2021 | hdr_len + sizeof(struct eth_header) | |
2022 | + sizeof(struct ip6_header)); | |
2023 | } | |
2024 | ||
2025 | return virtio_net_rsc_do_coalesce(chain, nc, buf, size, &unit); | |
2026 | } | |
2027 | ||
2028 | static VirtioNetRscChain *virtio_net_rsc_lookup_chain(VirtIONet *n, | |
2029 | NetClientState *nc, | |
2030 | uint16_t proto) | |
2031 | { | |
2032 | VirtioNetRscChain *chain; | |
2033 | ||
2034 | if ((proto != (uint16_t)ETH_P_IP) && (proto != (uint16_t)ETH_P_IPV6)) { | |
2035 | return NULL; | |
2036 | } | |
2037 | ||
2038 | QTAILQ_FOREACH(chain, &n->rsc_chains, next) { | |
2039 | if (chain->proto == proto) { | |
2040 | return chain; | |
2041 | } | |
2042 | } | |
2043 | ||
2044 | chain = g_malloc(sizeof(*chain)); | |
2045 | chain->n = n; | |
2046 | chain->proto = proto; | |
2047 | if (proto == (uint16_t)ETH_P_IP) { | |
2048 | chain->max_payload = VIRTIO_NET_MAX_IP4_PAYLOAD; | |
2049 | chain->gso_type = VIRTIO_NET_HDR_GSO_TCPV4; | |
2050 | } else { | |
2051 | chain->max_payload = VIRTIO_NET_MAX_IP6_PAYLOAD; | |
2052 | chain->gso_type = VIRTIO_NET_HDR_GSO_TCPV6; | |
2053 | } | |
2054 | chain->drain_timer = timer_new_ns(QEMU_CLOCK_HOST, | |
2055 | virtio_net_rsc_purge, chain); | |
2056 | memset(&chain->stat, 0, sizeof(chain->stat)); | |
2057 | ||
2058 | QTAILQ_INIT(&chain->buffers); | |
2059 | QTAILQ_INSERT_TAIL(&n->rsc_chains, chain, next); | |
2060 | ||
2061 | return chain; | |
2062 | } | |
2063 | ||
2064 | static ssize_t virtio_net_rsc_receive(NetClientState *nc, | |
2065 | const uint8_t *buf, | |
2066 | size_t size) | |
2067 | { | |
2068 | uint16_t proto; | |
2069 | VirtioNetRscChain *chain; | |
2070 | struct eth_header *eth; | |
2071 | VirtIONet *n; | |
2072 | ||
2073 | n = qemu_get_nic_opaque(nc); | |
2074 | if (size < (n->host_hdr_len + sizeof(struct eth_header))) { | |
2075 | return virtio_net_do_receive(nc, buf, size); | |
2076 | } | |
2077 | ||
2078 | eth = (struct eth_header *)(buf + n->guest_hdr_len); | |
2079 | proto = htons(eth->h_proto); | |
2080 | ||
2081 | chain = virtio_net_rsc_lookup_chain(n, nc, proto); | |
2082 | if (chain) { | |
2083 | chain->stat.received++; | |
2084 | if (proto == (uint16_t)ETH_P_IP && n->rsc4_enabled) { | |
2085 | return virtio_net_rsc_receive4(chain, nc, buf, size); | |
2086 | } else if (proto == (uint16_t)ETH_P_IPV6 && n->rsc6_enabled) { | |
2087 | return virtio_net_rsc_receive6(chain, nc, buf, size); | |
2088 | } | |
2089 | } | |
2090 | return virtio_net_do_receive(nc, buf, size); | |
2091 | } | |
2092 | ||
2093 | static ssize_t virtio_net_receive(NetClientState *nc, const uint8_t *buf, | |
2094 | size_t size) | |
2095 | { | |
2096 | VirtIONet *n = qemu_get_nic_opaque(nc); | |
2097 | if ((n->rsc4_enabled || n->rsc6_enabled)) { | |
2098 | return virtio_net_rsc_receive(nc, buf, size); | |
2099 | } else { | |
2100 | return virtio_net_do_receive(nc, buf, size); | |
2101 | } | |
2102 | } | |
2103 | ||
0c87e93e | 2104 | static int32_t virtio_net_flush_tx(VirtIONetQueue *q); |
6243375f | 2105 | |
4e68f7a0 | 2106 | static void virtio_net_tx_complete(NetClientState *nc, ssize_t len) |
6243375f | 2107 | { |
cc1f0f45 | 2108 | VirtIONet *n = qemu_get_nic_opaque(nc); |
fed699f9 | 2109 | VirtIONetQueue *q = virtio_net_get_subqueue(nc); |
17a0ca55 | 2110 | VirtIODevice *vdev = VIRTIO_DEVICE(n); |
6243375f | 2111 | |
51b19ebe | 2112 | virtqueue_push(q->tx_vq, q->async_tx.elem, 0); |
17a0ca55 | 2113 | virtio_notify(vdev, q->tx_vq); |
6243375f | 2114 | |
51b19ebe PB |
2115 | g_free(q->async_tx.elem); |
2116 | q->async_tx.elem = NULL; | |
6243375f | 2117 | |
0c87e93e JW |
2118 | virtio_queue_set_notification(q->tx_vq, 1); |
2119 | virtio_net_flush_tx(q); | |
6243375f MM |
2120 | } |
2121 | ||
fbe78f4f | 2122 | /* TX */ |
0c87e93e | 2123 | static int32_t virtio_net_flush_tx(VirtIONetQueue *q) |
fbe78f4f | 2124 | { |
0c87e93e | 2125 | VirtIONet *n = q->n; |
17a0ca55 | 2126 | VirtIODevice *vdev = VIRTIO_DEVICE(n); |
51b19ebe | 2127 | VirtQueueElement *elem; |
e3f30488 | 2128 | int32_t num_packets = 0; |
fed699f9 | 2129 | int queue_index = vq2q(virtio_get_queue_index(q->tx_vq)); |
17a0ca55 | 2130 | if (!(vdev->status & VIRTIO_CONFIG_S_DRIVER_OK)) { |
e3f30488 AW |
2131 | return num_packets; |
2132 | } | |
fbe78f4f | 2133 | |
51b19ebe | 2134 | if (q->async_tx.elem) { |
0c87e93e | 2135 | virtio_queue_set_notification(q->tx_vq, 0); |
e3f30488 | 2136 | return num_packets; |
6243375f MM |
2137 | } |
2138 | ||
51b19ebe | 2139 | for (;;) { |
bd89dd98 | 2140 | ssize_t ret; |
51b19ebe PB |
2141 | unsigned int out_num; |
2142 | struct iovec sg[VIRTQUEUE_MAX_SIZE], sg2[VIRTQUEUE_MAX_SIZE + 1], *out_sg; | |
feb93f36 | 2143 | struct virtio_net_hdr_mrg_rxbuf mhdr; |
fbe78f4f | 2144 | |
51b19ebe PB |
2145 | elem = virtqueue_pop(q->tx_vq, sizeof(VirtQueueElement)); |
2146 | if (!elem) { | |
2147 | break; | |
2148 | } | |
2149 | ||
2150 | out_num = elem->out_num; | |
2151 | out_sg = elem->out_sg; | |
7b80d08e | 2152 | if (out_num < 1) { |
fa5e56c2 GK |
2153 | virtio_error(vdev, "virtio-net header not in first element"); |
2154 | virtqueue_detach_element(q->tx_vq, elem, 0); | |
2155 | g_free(elem); | |
2156 | return -EINVAL; | |
fbe78f4f AL |
2157 | } |
2158 | ||
032a74a1 | 2159 | if (n->has_vnet_hdr) { |
feb93f36 JW |
2160 | if (iov_to_buf(out_sg, out_num, 0, &mhdr, n->guest_hdr_len) < |
2161 | n->guest_hdr_len) { | |
fa5e56c2 GK |
2162 | virtio_error(vdev, "virtio-net header incorrect"); |
2163 | virtqueue_detach_element(q->tx_vq, elem, 0); | |
2164 | g_free(elem); | |
2165 | return -EINVAL; | |
032a74a1 | 2166 | } |
1bfa316c | 2167 | if (n->needs_vnet_hdr_swap) { |
feb93f36 JW |
2168 | virtio_net_hdr_swap(vdev, (void *) &mhdr); |
2169 | sg2[0].iov_base = &mhdr; | |
2170 | sg2[0].iov_len = n->guest_hdr_len; | |
2171 | out_num = iov_copy(&sg2[1], ARRAY_SIZE(sg2) - 1, | |
2172 | out_sg, out_num, | |
2173 | n->guest_hdr_len, -1); | |
2174 | if (out_num == VIRTQUEUE_MAX_SIZE) { | |
2175 | goto drop; | |
7d37435b | 2176 | } |
feb93f36 JW |
2177 | out_num += 1; |
2178 | out_sg = sg2; | |
7d37435b | 2179 | } |
032a74a1 | 2180 | } |
14761f9c MT |
2181 | /* |
2182 | * If host wants to see the guest header as is, we can | |
2183 | * pass it on unchanged. Otherwise, copy just the parts | |
2184 | * that host is interested in. | |
2185 | */ | |
2186 | assert(n->host_hdr_len <= n->guest_hdr_len); | |
2187 | if (n->host_hdr_len != n->guest_hdr_len) { | |
2188 | unsigned sg_num = iov_copy(sg, ARRAY_SIZE(sg), | |
2189 | out_sg, out_num, | |
2190 | 0, n->host_hdr_len); | |
2191 | sg_num += iov_copy(sg + sg_num, ARRAY_SIZE(sg) - sg_num, | |
2192 | out_sg, out_num, | |
2193 | n->guest_hdr_len, -1); | |
2194 | out_num = sg_num; | |
2195 | out_sg = sg; | |
fbe78f4f AL |
2196 | } |
2197 | ||
fed699f9 JW |
2198 | ret = qemu_sendv_packet_async(qemu_get_subqueue(n->nic, queue_index), |
2199 | out_sg, out_num, virtio_net_tx_complete); | |
6243375f | 2200 | if (ret == 0) { |
0c87e93e JW |
2201 | virtio_queue_set_notification(q->tx_vq, 0); |
2202 | q->async_tx.elem = elem; | |
e3f30488 | 2203 | return -EBUSY; |
6243375f MM |
2204 | } |
2205 | ||
feb93f36 | 2206 | drop: |
51b19ebe | 2207 | virtqueue_push(q->tx_vq, elem, 0); |
17a0ca55 | 2208 | virtio_notify(vdev, q->tx_vq); |
51b19ebe | 2209 | g_free(elem); |
e3f30488 AW |
2210 | |
2211 | if (++num_packets >= n->tx_burst) { | |
2212 | break; | |
2213 | } | |
fbe78f4f | 2214 | } |
e3f30488 | 2215 | return num_packets; |
fbe78f4f AL |
2216 | } |
2217 | ||
a697a334 | 2218 | static void virtio_net_handle_tx_timer(VirtIODevice *vdev, VirtQueue *vq) |
fbe78f4f | 2219 | { |
17a0ca55 | 2220 | VirtIONet *n = VIRTIO_NET(vdev); |
fed699f9 | 2221 | VirtIONetQueue *q = &n->vqs[vq2q(virtio_get_queue_index(vq))]; |
fbe78f4f | 2222 | |
283e2c2a YB |
2223 | if (unlikely((n->status & VIRTIO_NET_S_LINK_UP) == 0)) { |
2224 | virtio_net_drop_tx_queue_data(vdev, vq); | |
2225 | return; | |
2226 | } | |
2227 | ||
783e7706 | 2228 | /* This happens when device was stopped but VCPU wasn't. */ |
17a0ca55 | 2229 | if (!vdev->vm_running) { |
0c87e93e | 2230 | q->tx_waiting = 1; |
783e7706 MT |
2231 | return; |
2232 | } | |
2233 | ||
0c87e93e | 2234 | if (q->tx_waiting) { |
fbe78f4f | 2235 | virtio_queue_set_notification(vq, 1); |
bc72ad67 | 2236 | timer_del(q->tx_timer); |
0c87e93e | 2237 | q->tx_waiting = 0; |
fa5e56c2 GK |
2238 | if (virtio_net_flush_tx(q) == -EINVAL) { |
2239 | return; | |
2240 | } | |
fbe78f4f | 2241 | } else { |
bc72ad67 AB |
2242 | timer_mod(q->tx_timer, |
2243 | qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + n->tx_timeout); | |
0c87e93e | 2244 | q->tx_waiting = 1; |
fbe78f4f AL |
2245 | virtio_queue_set_notification(vq, 0); |
2246 | } | |
2247 | } | |
2248 | ||
a697a334 AW |
2249 | static void virtio_net_handle_tx_bh(VirtIODevice *vdev, VirtQueue *vq) |
2250 | { | |
17a0ca55 | 2251 | VirtIONet *n = VIRTIO_NET(vdev); |
fed699f9 | 2252 | VirtIONetQueue *q = &n->vqs[vq2q(virtio_get_queue_index(vq))]; |
a697a334 | 2253 | |
283e2c2a YB |
2254 | if (unlikely((n->status & VIRTIO_NET_S_LINK_UP) == 0)) { |
2255 | virtio_net_drop_tx_queue_data(vdev, vq); | |
2256 | return; | |
2257 | } | |
2258 | ||
0c87e93e | 2259 | if (unlikely(q->tx_waiting)) { |
a697a334 AW |
2260 | return; |
2261 | } | |
0c87e93e | 2262 | q->tx_waiting = 1; |
783e7706 | 2263 | /* This happens when device was stopped but VCPU wasn't. */ |
17a0ca55 | 2264 | if (!vdev->vm_running) { |
783e7706 MT |
2265 | return; |
2266 | } | |
a697a334 | 2267 | virtio_queue_set_notification(vq, 0); |
0c87e93e | 2268 | qemu_bh_schedule(q->tx_bh); |
a697a334 AW |
2269 | } |
2270 | ||
fbe78f4f AL |
2271 | static void virtio_net_tx_timer(void *opaque) |
2272 | { | |
0c87e93e JW |
2273 | VirtIONetQueue *q = opaque; |
2274 | VirtIONet *n = q->n; | |
17a0ca55 | 2275 | VirtIODevice *vdev = VIRTIO_DEVICE(n); |
e8bcf842 MT |
2276 | /* This happens when device was stopped but BH wasn't. */ |
2277 | if (!vdev->vm_running) { | |
2278 | /* Make sure tx waiting is set, so we'll run when restarted. */ | |
2279 | assert(q->tx_waiting); | |
2280 | return; | |
2281 | } | |
fbe78f4f | 2282 | |
0c87e93e | 2283 | q->tx_waiting = 0; |
fbe78f4f AL |
2284 | |
2285 | /* Just in case the driver is not ready on more */ | |
17a0ca55 | 2286 | if (!(vdev->status & VIRTIO_CONFIG_S_DRIVER_OK)) { |
fbe78f4f | 2287 | return; |
17a0ca55 | 2288 | } |
fbe78f4f | 2289 | |
0c87e93e JW |
2290 | virtio_queue_set_notification(q->tx_vq, 1); |
2291 | virtio_net_flush_tx(q); | |
fbe78f4f AL |
2292 | } |
2293 | ||
a697a334 AW |
2294 | static void virtio_net_tx_bh(void *opaque) |
2295 | { | |
0c87e93e JW |
2296 | VirtIONetQueue *q = opaque; |
2297 | VirtIONet *n = q->n; | |
17a0ca55 | 2298 | VirtIODevice *vdev = VIRTIO_DEVICE(n); |
a697a334 AW |
2299 | int32_t ret; |
2300 | ||
e8bcf842 MT |
2301 | /* This happens when device was stopped but BH wasn't. */ |
2302 | if (!vdev->vm_running) { | |
2303 | /* Make sure tx waiting is set, so we'll run when restarted. */ | |
2304 | assert(q->tx_waiting); | |
2305 | return; | |
2306 | } | |
783e7706 | 2307 | |
0c87e93e | 2308 | q->tx_waiting = 0; |
a697a334 AW |
2309 | |
2310 | /* Just in case the driver is not ready on more */ | |
17a0ca55 | 2311 | if (unlikely(!(vdev->status & VIRTIO_CONFIG_S_DRIVER_OK))) { |
a697a334 | 2312 | return; |
17a0ca55 | 2313 | } |
a697a334 | 2314 | |
0c87e93e | 2315 | ret = virtio_net_flush_tx(q); |
fa5e56c2 GK |
2316 | if (ret == -EBUSY || ret == -EINVAL) { |
2317 | return; /* Notification re-enable handled by tx_complete or device | |
2318 | * broken */ | |
a697a334 AW |
2319 | } |
2320 | ||
2321 | /* If we flush a full burst of packets, assume there are | |
2322 | * more coming and immediately reschedule */ | |
2323 | if (ret >= n->tx_burst) { | |
0c87e93e JW |
2324 | qemu_bh_schedule(q->tx_bh); |
2325 | q->tx_waiting = 1; | |
a697a334 AW |
2326 | return; |
2327 | } | |
2328 | ||
2329 | /* If less than a full burst, re-enable notification and flush | |
2330 | * anything that may have come in while we weren't looking. If | |
2331 | * we find something, assume the guest is still active and reschedule */ | |
0c87e93e | 2332 | virtio_queue_set_notification(q->tx_vq, 1); |
fa5e56c2 GK |
2333 | ret = virtio_net_flush_tx(q); |
2334 | if (ret == -EINVAL) { | |
2335 | return; | |
2336 | } else if (ret > 0) { | |
0c87e93e JW |
2337 | virtio_queue_set_notification(q->tx_vq, 0); |
2338 | qemu_bh_schedule(q->tx_bh); | |
2339 | q->tx_waiting = 1; | |
a697a334 AW |
2340 | } |
2341 | } | |
2342 | ||
f9d6dbf0 WC |
2343 | static void virtio_net_add_queue(VirtIONet *n, int index) |
2344 | { | |
2345 | VirtIODevice *vdev = VIRTIO_DEVICE(n); | |
2346 | ||
1c0fbfa3 MT |
2347 | n->vqs[index].rx_vq = virtio_add_queue(vdev, n->net_conf.rx_queue_size, |
2348 | virtio_net_handle_rx); | |
9b02e161 | 2349 | |
f9d6dbf0 WC |
2350 | if (n->net_conf.tx && !strcmp(n->net_conf.tx, "timer")) { |
2351 | n->vqs[index].tx_vq = | |
9b02e161 WW |
2352 | virtio_add_queue(vdev, n->net_conf.tx_queue_size, |
2353 | virtio_net_handle_tx_timer); | |
f9d6dbf0 WC |
2354 | n->vqs[index].tx_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, |
2355 | virtio_net_tx_timer, | |
2356 | &n->vqs[index]); | |
2357 | } else { | |
2358 | n->vqs[index].tx_vq = | |
9b02e161 WW |
2359 | virtio_add_queue(vdev, n->net_conf.tx_queue_size, |
2360 | virtio_net_handle_tx_bh); | |
f9d6dbf0 WC |
2361 | n->vqs[index].tx_bh = qemu_bh_new(virtio_net_tx_bh, &n->vqs[index]); |
2362 | } | |
2363 | ||
2364 | n->vqs[index].tx_waiting = 0; | |
2365 | n->vqs[index].n = n; | |
2366 | } | |
2367 | ||
2368 | static void virtio_net_del_queue(VirtIONet *n, int index) | |
2369 | { | |
2370 | VirtIODevice *vdev = VIRTIO_DEVICE(n); | |
2371 | VirtIONetQueue *q = &n->vqs[index]; | |
2372 | NetClientState *nc = qemu_get_subqueue(n->nic, index); | |
2373 | ||
2374 | qemu_purge_queued_packets(nc); | |
2375 | ||
2376 | virtio_del_queue(vdev, index * 2); | |
2377 | if (q->tx_timer) { | |
2378 | timer_del(q->tx_timer); | |
2379 | timer_free(q->tx_timer); | |
f989c30c | 2380 | q->tx_timer = NULL; |
f9d6dbf0 WC |
2381 | } else { |
2382 | qemu_bh_delete(q->tx_bh); | |
f989c30c | 2383 | q->tx_bh = NULL; |
f9d6dbf0 | 2384 | } |
f989c30c | 2385 | q->tx_waiting = 0; |
f9d6dbf0 WC |
2386 | virtio_del_queue(vdev, index * 2 + 1); |
2387 | } | |
2388 | ||
2389 | static void virtio_net_change_num_queues(VirtIONet *n, int new_max_queues) | |
2390 | { | |
2391 | VirtIODevice *vdev = VIRTIO_DEVICE(n); | |
2392 | int old_num_queues = virtio_get_num_queues(vdev); | |
2393 | int new_num_queues = new_max_queues * 2 + 1; | |
2394 | int i; | |
2395 | ||
2396 | assert(old_num_queues >= 3); | |
2397 | assert(old_num_queues % 2 == 1); | |
2398 | ||
2399 | if (old_num_queues == new_num_queues) { | |
2400 | return; | |
2401 | } | |
2402 | ||
2403 | /* | |
2404 | * We always need to remove and add ctrl vq if | |
2405 | * old_num_queues != new_num_queues. Remove ctrl_vq first, | |
20f86a75 | 2406 | * and then we only enter one of the following two loops. |
f9d6dbf0 WC |
2407 | */ |
2408 | virtio_del_queue(vdev, old_num_queues - 1); | |
2409 | ||
2410 | for (i = new_num_queues - 1; i < old_num_queues - 1; i += 2) { | |
2411 | /* new_num_queues < old_num_queues */ | |
2412 | virtio_net_del_queue(n, i / 2); | |
2413 | } | |
2414 | ||
2415 | for (i = old_num_queues - 1; i < new_num_queues - 1; i += 2) { | |
2416 | /* new_num_queues > old_num_queues */ | |
2417 | virtio_net_add_queue(n, i / 2); | |
2418 | } | |
2419 | ||
2420 | /* add ctrl_vq last */ | |
2421 | n->ctrl_vq = virtio_add_queue(vdev, 64, virtio_net_handle_ctrl); | |
2422 | } | |
2423 | ||
ec57db16 | 2424 | static void virtio_net_set_multiqueue(VirtIONet *n, int multiqueue) |
fed699f9 | 2425 | { |
f9d6dbf0 WC |
2426 | int max = multiqueue ? n->max_queues : 1; |
2427 | ||
fed699f9 | 2428 | n->multiqueue = multiqueue; |
f9d6dbf0 | 2429 | virtio_net_change_num_queues(n, max); |
fed699f9 | 2430 | |
fed699f9 JW |
2431 | virtio_net_set_queues(n); |
2432 | } | |
2433 | ||
982b78c5 | 2434 | static int virtio_net_post_load_device(void *opaque, int version_id) |
037dab2f | 2435 | { |
982b78c5 DDAG |
2436 | VirtIONet *n = opaque; |
2437 | VirtIODevice *vdev = VIRTIO_DEVICE(n); | |
037dab2f | 2438 | int i, link_down; |
fbe78f4f | 2439 | |
9d8c6a25 | 2440 | trace_virtio_net_post_load_device(); |
982b78c5 | 2441 | virtio_net_set_mrg_rx_bufs(n, n->mergeable_rx_bufs, |
95129d6f CH |
2442 | virtio_vdev_has_feature(vdev, |
2443 | VIRTIO_F_VERSION_1)); | |
fbe78f4f | 2444 | |
76010cb3 | 2445 | /* MAC_TABLE_ENTRIES may be different from the saved image */ |
982b78c5 | 2446 | if (n->mac_table.in_use > MAC_TABLE_ENTRIES) { |
76010cb3 | 2447 | n->mac_table.in_use = 0; |
b6503ed9 | 2448 | } |
0ce0e8f4 | 2449 | |
982b78c5 | 2450 | if (!virtio_vdev_has_feature(vdev, VIRTIO_NET_F_CTRL_GUEST_OFFLOADS)) { |
6c666823 MT |
2451 | n->curr_guest_offloads = virtio_net_supported_guest_offloads(n); |
2452 | } | |
2453 | ||
7788c3f2 MS |
2454 | /* |
2455 | * curr_guest_offloads will be later overwritten by the | |
2456 | * virtio_set_features_nocheck call done from the virtio_load. | |
2457 | * Here we make sure it is preserved and restored accordingly | |
2458 | * in the virtio_net_post_load_virtio callback. | |
2459 | */ | |
2460 | n->saved_guest_offloads = n->curr_guest_offloads; | |
6c666823 | 2461 | |
5f800801 JW |
2462 | virtio_net_set_queues(n); |
2463 | ||
2d9aba39 AW |
2464 | /* Find the first multicast entry in the saved MAC filter */ |
2465 | for (i = 0; i < n->mac_table.in_use; i++) { | |
2466 | if (n->mac_table.macs[i * ETH_ALEN] & 1) { | |
2467 | break; | |
2468 | } | |
2469 | } | |
2470 | n->mac_table.first_multi = i; | |
98991481 AK |
2471 | |
2472 | /* nc.link_down can't be migrated, so infer link_down according | |
2473 | * to link status bit in n->status */ | |
5f800801 JW |
2474 | link_down = (n->status & VIRTIO_NET_S_LINK_UP) == 0; |
2475 | for (i = 0; i < n->max_queues; i++) { | |
2476 | qemu_get_subqueue(n->nic, i)->link_down = link_down; | |
2477 | } | |
98991481 | 2478 | |
6c666823 MT |
2479 | if (virtio_vdev_has_feature(vdev, VIRTIO_NET_F_GUEST_ANNOUNCE) && |
2480 | virtio_vdev_has_feature(vdev, VIRTIO_NET_F_CTRL_VQ)) { | |
9d8c6a25 DDAG |
2481 | qemu_announce_timer_reset(&n->announce_timer, migrate_announce_params(), |
2482 | QEMU_CLOCK_VIRTUAL, | |
2483 | virtio_net_announce_timer, n); | |
2484 | if (n->announce_timer.round) { | |
2485 | timer_mod(n->announce_timer.tm, | |
2486 | qemu_clock_get_ms(n->announce_timer.type)); | |
2487 | } else { | |
944458b6 | 2488 | qemu_announce_timer_del(&n->announce_timer, false); |
9d8c6a25 | 2489 | } |
6c666823 MT |
2490 | } |
2491 | ||
fbe78f4f AL |
2492 | return 0; |
2493 | } | |
2494 | ||
7788c3f2 MS |
2495 | static int virtio_net_post_load_virtio(VirtIODevice *vdev) |
2496 | { | |
2497 | VirtIONet *n = VIRTIO_NET(vdev); | |
2498 | /* | |
2499 | * The actual needed state is now in saved_guest_offloads, | |
2500 | * see virtio_net_post_load_device for detail. | |
2501 | * Restore it back and apply the desired offloads. | |
2502 | */ | |
2503 | n->curr_guest_offloads = n->saved_guest_offloads; | |
2504 | if (peer_has_vnet_hdr(n)) { | |
2505 | virtio_net_apply_guest_offloads(n); | |
2506 | } | |
2507 | ||
2508 | return 0; | |
2509 | } | |
2510 | ||
982b78c5 DDAG |
2511 | /* tx_waiting field of a VirtIONetQueue */ |
2512 | static const VMStateDescription vmstate_virtio_net_queue_tx_waiting = { | |
2513 | .name = "virtio-net-queue-tx_waiting", | |
2514 | .fields = (VMStateField[]) { | |
2515 | VMSTATE_UINT32(tx_waiting, VirtIONetQueue), | |
2516 | VMSTATE_END_OF_LIST() | |
2517 | }, | |
2518 | }; | |
2519 | ||
2520 | static bool max_queues_gt_1(void *opaque, int version_id) | |
2521 | { | |
2522 | return VIRTIO_NET(opaque)->max_queues > 1; | |
2523 | } | |
2524 | ||
2525 | static bool has_ctrl_guest_offloads(void *opaque, int version_id) | |
2526 | { | |
2527 | return virtio_vdev_has_feature(VIRTIO_DEVICE(opaque), | |
2528 | VIRTIO_NET_F_CTRL_GUEST_OFFLOADS); | |
2529 | } | |
2530 | ||
2531 | static bool mac_table_fits(void *opaque, int version_id) | |
2532 | { | |
2533 | return VIRTIO_NET(opaque)->mac_table.in_use <= MAC_TABLE_ENTRIES; | |
2534 | } | |
2535 | ||
2536 | static bool mac_table_doesnt_fit(void *opaque, int version_id) | |
2537 | { | |
2538 | return !mac_table_fits(opaque, version_id); | |
2539 | } | |
2540 | ||
2541 | /* This temporary type is shared by all the WITH_TMP methods | |
2542 | * although only some fields are used by each. | |
2543 | */ | |
2544 | struct VirtIONetMigTmp { | |
2545 | VirtIONet *parent; | |
2546 | VirtIONetQueue *vqs_1; | |
2547 | uint16_t curr_queues_1; | |
2548 | uint8_t has_ufo; | |
2549 | uint32_t has_vnet_hdr; | |
2550 | }; | |
2551 | ||
2552 | /* The 2nd and subsequent tx_waiting flags are loaded later than | |
2553 | * the 1st entry in the queues and only if there's more than one | |
2554 | * entry. We use the tmp mechanism to calculate a temporary | |
2555 | * pointer and count and also validate the count. | |
2556 | */ | |
2557 | ||
44b1ff31 | 2558 | static int virtio_net_tx_waiting_pre_save(void *opaque) |
982b78c5 DDAG |
2559 | { |
2560 | struct VirtIONetMigTmp *tmp = opaque; | |
2561 | ||
2562 | tmp->vqs_1 = tmp->parent->vqs + 1; | |
2563 | tmp->curr_queues_1 = tmp->parent->curr_queues - 1; | |
2564 | if (tmp->parent->curr_queues == 0) { | |
2565 | tmp->curr_queues_1 = 0; | |
2566 | } | |
44b1ff31 DDAG |
2567 | |
2568 | return 0; | |
982b78c5 DDAG |
2569 | } |
2570 | ||
2571 | static int virtio_net_tx_waiting_pre_load(void *opaque) | |
2572 | { | |
2573 | struct VirtIONetMigTmp *tmp = opaque; | |
2574 | ||
2575 | /* Reuse the pointer setup from save */ | |
2576 | virtio_net_tx_waiting_pre_save(opaque); | |
2577 | ||
2578 | if (tmp->parent->curr_queues > tmp->parent->max_queues) { | |
2579 | error_report("virtio-net: curr_queues %x > max_queues %x", | |
2580 | tmp->parent->curr_queues, tmp->parent->max_queues); | |
2581 | ||
2582 | return -EINVAL; | |
2583 | } | |
2584 | ||
2585 | return 0; /* all good */ | |
2586 | } | |
2587 | ||
2588 | static const VMStateDescription vmstate_virtio_net_tx_waiting = { | |
2589 | .name = "virtio-net-tx_waiting", | |
2590 | .pre_load = virtio_net_tx_waiting_pre_load, | |
2591 | .pre_save = virtio_net_tx_waiting_pre_save, | |
2592 | .fields = (VMStateField[]) { | |
2593 | VMSTATE_STRUCT_VARRAY_POINTER_UINT16(vqs_1, struct VirtIONetMigTmp, | |
2594 | curr_queues_1, | |
2595 | vmstate_virtio_net_queue_tx_waiting, | |
2596 | struct VirtIONetQueue), | |
2597 | VMSTATE_END_OF_LIST() | |
2598 | }, | |
2599 | }; | |
2600 | ||
2601 | /* the 'has_ufo' flag is just tested; if the incoming stream has the | |
2602 | * flag set we need to check that we have it | |
2603 | */ | |
2604 | static int virtio_net_ufo_post_load(void *opaque, int version_id) | |
2605 | { | |
2606 | struct VirtIONetMigTmp *tmp = opaque; | |
2607 | ||
2608 | if (tmp->has_ufo && !peer_has_ufo(tmp->parent)) { | |
2609 | error_report("virtio-net: saved image requires TUN_F_UFO support"); | |
2610 | return -EINVAL; | |
2611 | } | |
2612 | ||
2613 | return 0; | |
2614 | } | |
2615 | ||
44b1ff31 | 2616 | static int virtio_net_ufo_pre_save(void *opaque) |
982b78c5 DDAG |
2617 | { |
2618 | struct VirtIONetMigTmp *tmp = opaque; | |
2619 | ||
2620 | tmp->has_ufo = tmp->parent->has_ufo; | |
44b1ff31 DDAG |
2621 | |
2622 | return 0; | |
982b78c5 DDAG |
2623 | } |
2624 | ||
2625 | static const VMStateDescription vmstate_virtio_net_has_ufo = { | |
2626 | .name = "virtio-net-ufo", | |
2627 | .post_load = virtio_net_ufo_post_load, | |
2628 | .pre_save = virtio_net_ufo_pre_save, | |
2629 | .fields = (VMStateField[]) { | |
2630 | VMSTATE_UINT8(has_ufo, struct VirtIONetMigTmp), | |
2631 | VMSTATE_END_OF_LIST() | |
2632 | }, | |
2633 | }; | |
2634 | ||
2635 | /* the 'has_vnet_hdr' flag is just tested; if the incoming stream has the | |
2636 | * flag set we need to check that we have it | |
2637 | */ | |
2638 | static int virtio_net_vnet_post_load(void *opaque, int version_id) | |
2639 | { | |
2640 | struct VirtIONetMigTmp *tmp = opaque; | |
2641 | ||
2642 | if (tmp->has_vnet_hdr && !peer_has_vnet_hdr(tmp->parent)) { | |
2643 | error_report("virtio-net: saved image requires vnet_hdr=on"); | |
2644 | return -EINVAL; | |
2645 | } | |
2646 | ||
2647 | return 0; | |
2648 | } | |
2649 | ||
44b1ff31 | 2650 | static int virtio_net_vnet_pre_save(void *opaque) |
982b78c5 DDAG |
2651 | { |
2652 | struct VirtIONetMigTmp *tmp = opaque; | |
2653 | ||
2654 | tmp->has_vnet_hdr = tmp->parent->has_vnet_hdr; | |
44b1ff31 DDAG |
2655 | |
2656 | return 0; | |
982b78c5 DDAG |
2657 | } |
2658 | ||
2659 | static const VMStateDescription vmstate_virtio_net_has_vnet = { | |
2660 | .name = "virtio-net-vnet", | |
2661 | .post_load = virtio_net_vnet_post_load, | |
2662 | .pre_save = virtio_net_vnet_pre_save, | |
2663 | .fields = (VMStateField[]) { | |
2664 | VMSTATE_UINT32(has_vnet_hdr, struct VirtIONetMigTmp), | |
2665 | VMSTATE_END_OF_LIST() | |
2666 | }, | |
2667 | }; | |
2668 | ||
2669 | static const VMStateDescription vmstate_virtio_net_device = { | |
2670 | .name = "virtio-net-device", | |
2671 | .version_id = VIRTIO_NET_VM_VERSION, | |
2672 | .minimum_version_id = VIRTIO_NET_VM_VERSION, | |
2673 | .post_load = virtio_net_post_load_device, | |
2674 | .fields = (VMStateField[]) { | |
2675 | VMSTATE_UINT8_ARRAY(mac, VirtIONet, ETH_ALEN), | |
2676 | VMSTATE_STRUCT_POINTER(vqs, VirtIONet, | |
2677 | vmstate_virtio_net_queue_tx_waiting, | |
2678 | VirtIONetQueue), | |
2679 | VMSTATE_UINT32(mergeable_rx_bufs, VirtIONet), | |
2680 | VMSTATE_UINT16(status, VirtIONet), | |
2681 | VMSTATE_UINT8(promisc, VirtIONet), | |
2682 | VMSTATE_UINT8(allmulti, VirtIONet), | |
2683 | VMSTATE_UINT32(mac_table.in_use, VirtIONet), | |
2684 | ||
2685 | /* Guarded pair: If it fits we load it, else we throw it away | |
2686 | * - can happen if source has a larger MAC table.; post-load | |
2687 | * sets flags in this case. | |
2688 | */ | |
2689 | VMSTATE_VBUFFER_MULTIPLY(mac_table.macs, VirtIONet, | |
2690 | 0, mac_table_fits, mac_table.in_use, | |
2691 | ETH_ALEN), | |
2692 | VMSTATE_UNUSED_VARRAY_UINT32(VirtIONet, mac_table_doesnt_fit, 0, | |
2693 | mac_table.in_use, ETH_ALEN), | |
2694 | ||
2695 | /* Note: This is an array of uint32's that's always been saved as a | |
2696 | * buffer; hold onto your endiannesses; it's actually used as a bitmap | |
2697 | * but based on the uint. | |
2698 | */ | |
2699 | VMSTATE_BUFFER_POINTER_UNSAFE(vlans, VirtIONet, 0, MAX_VLAN >> 3), | |
2700 | VMSTATE_WITH_TMP(VirtIONet, struct VirtIONetMigTmp, | |
2701 | vmstate_virtio_net_has_vnet), | |
2702 | VMSTATE_UINT8(mac_table.multi_overflow, VirtIONet), | |
2703 | VMSTATE_UINT8(mac_table.uni_overflow, VirtIONet), | |
2704 | VMSTATE_UINT8(alluni, VirtIONet), | |
2705 | VMSTATE_UINT8(nomulti, VirtIONet), | |
2706 | VMSTATE_UINT8(nouni, VirtIONet), | |
2707 | VMSTATE_UINT8(nobcast, VirtIONet), | |
2708 | VMSTATE_WITH_TMP(VirtIONet, struct VirtIONetMigTmp, | |
2709 | vmstate_virtio_net_has_ufo), | |
2710 | VMSTATE_SINGLE_TEST(max_queues, VirtIONet, max_queues_gt_1, 0, | |
2711 | vmstate_info_uint16_equal, uint16_t), | |
2712 | VMSTATE_UINT16_TEST(curr_queues, VirtIONet, max_queues_gt_1), | |
2713 | VMSTATE_WITH_TMP(VirtIONet, struct VirtIONetMigTmp, | |
2714 | vmstate_virtio_net_tx_waiting), | |
2715 | VMSTATE_UINT64_TEST(curr_guest_offloads, VirtIONet, | |
2716 | has_ctrl_guest_offloads), | |
2717 | VMSTATE_END_OF_LIST() | |
2718 | }, | |
2719 | }; | |
2720 | ||
eb6b6c12 | 2721 | static NetClientInfo net_virtio_info = { |
f394b2e2 | 2722 | .type = NET_CLIENT_DRIVER_NIC, |
eb6b6c12 MM |
2723 | .size = sizeof(NICState), |
2724 | .can_receive = virtio_net_can_receive, | |
2725 | .receive = virtio_net_receive, | |
eb6b6c12 | 2726 | .link_status_changed = virtio_net_set_link_status, |
b1be4280 | 2727 | .query_rx_filter = virtio_net_query_rxfilter, |
b2c929f0 | 2728 | .announce = virtio_net_announce, |
eb6b6c12 MM |
2729 | }; |
2730 | ||
f56a1247 MT |
2731 | static bool virtio_net_guest_notifier_pending(VirtIODevice *vdev, int idx) |
2732 | { | |
17a0ca55 | 2733 | VirtIONet *n = VIRTIO_NET(vdev); |
fed699f9 | 2734 | NetClientState *nc = qemu_get_subqueue(n->nic, vq2q(idx)); |
f56a1247 | 2735 | assert(n->vhost_started); |
ed8b4afe | 2736 | return vhost_net_virtqueue_pending(get_vhost_net(nc->peer), idx); |
f56a1247 MT |
2737 | } |
2738 | ||
2739 | static void virtio_net_guest_notifier_mask(VirtIODevice *vdev, int idx, | |
2740 | bool mask) | |
2741 | { | |
17a0ca55 | 2742 | VirtIONet *n = VIRTIO_NET(vdev); |
fed699f9 | 2743 | NetClientState *nc = qemu_get_subqueue(n->nic, vq2q(idx)); |
f56a1247 | 2744 | assert(n->vhost_started); |
ed8b4afe | 2745 | vhost_net_virtqueue_mask(get_vhost_net(nc->peer), |
f56a1247 MT |
2746 | vdev, idx, mask); |
2747 | } | |
2748 | ||
019a3edb | 2749 | static void virtio_net_set_config_size(VirtIONet *n, uint64_t host_features) |
fbe78f4f | 2750 | { |
0cd09c3a | 2751 | virtio_add_feature(&host_features, VIRTIO_NET_F_MAC); |
a93e599d | 2752 | |
ba550851 SG |
2753 | n->config_size = virtio_feature_get_config_size(feature_sizes, |
2754 | host_features); | |
17ec5a86 FK |
2755 | } |
2756 | ||
8a253ec2 FK |
2757 | void virtio_net_set_netclient_name(VirtIONet *n, const char *name, |
2758 | const char *type) | |
2759 | { | |
2760 | /* | |
2761 | * The name can be NULL, the netclient name will be type.x. | |
2762 | */ | |
2763 | assert(type != NULL); | |
2764 | ||
9e288406 | 2765 | g_free(n->netclient_name); |
9e288406 | 2766 | g_free(n->netclient_type); |
80e0090a | 2767 | n->netclient_name = g_strdup(name); |
8a253ec2 FK |
2768 | n->netclient_type = g_strdup(type); |
2769 | } | |
2770 | ||
9711cd0d JF |
2771 | static bool failover_unplug_primary(VirtIONet *n) |
2772 | { | |
2773 | HotplugHandler *hotplug_ctrl; | |
2774 | PCIDevice *pci_dev; | |
2775 | Error *err = NULL; | |
2776 | ||
2777 | hotplug_ctrl = qdev_get_hotplug_handler(n->primary_dev); | |
2778 | if (hotplug_ctrl) { | |
2779 | pci_dev = PCI_DEVICE(n->primary_dev); | |
2780 | pci_dev->partially_hotplugged = true; | |
2781 | hotplug_handler_unplug_request(hotplug_ctrl, n->primary_dev, &err); | |
2782 | if (err) { | |
2783 | error_report_err(err); | |
2784 | return false; | |
2785 | } | |
2786 | } else { | |
2787 | return false; | |
2788 | } | |
2789 | return true; | |
2790 | } | |
2791 | ||
2792 | static bool failover_replug_primary(VirtIONet *n, Error **errp) | |
2793 | { | |
2794 | HotplugHandler *hotplug_ctrl; | |
2795 | PCIDevice *pdev = PCI_DEVICE(n->primary_dev); | |
2796 | ||
2797 | if (!pdev->partially_hotplugged) { | |
2798 | return true; | |
2799 | } | |
2800 | if (!n->primary_device_opts) { | |
2801 | n->primary_device_opts = qemu_opts_from_qdict( | |
2802 | qemu_find_opts("device"), | |
2803 | n->primary_device_dict, errp); | |
2804 | } | |
2805 | if (n->primary_device_opts) { | |
2806 | if (n->primary_dev) { | |
2807 | n->primary_bus = n->primary_dev->parent_bus; | |
2808 | } | |
2809 | qdev_set_parent_bus(n->primary_dev, n->primary_bus); | |
2810 | n->primary_should_be_hidden = false; | |
2811 | qemu_opt_set_bool(n->primary_device_opts, | |
2812 | "partially_hotplugged", true, errp); | |
2813 | hotplug_ctrl = qdev_get_hotplug_handler(n->primary_dev); | |
2814 | if (hotplug_ctrl) { | |
2815 | hotplug_handler_pre_plug(hotplug_ctrl, n->primary_dev, errp); | |
2816 | hotplug_handler_plug(hotplug_ctrl, n->primary_dev, errp); | |
2817 | } | |
2818 | if (!n->primary_dev) { | |
2819 | error_setg(errp, "virtio_net: couldn't find primary device"); | |
2820 | } | |
2821 | } | |
2822 | return *errp != NULL; | |
2823 | } | |
2824 | ||
2825 | static void virtio_net_handle_migration_primary(VirtIONet *n, | |
2826 | MigrationState *s) | |
2827 | { | |
2828 | bool should_be_hidden; | |
2829 | Error *err = NULL; | |
2830 | ||
2831 | should_be_hidden = atomic_read(&n->primary_should_be_hidden); | |
2832 | ||
2833 | if (!n->primary_dev) { | |
2834 | n->primary_dev = virtio_connect_failover_devices(n, n->qdev, &err); | |
2835 | if (!n->primary_dev) { | |
2836 | return; | |
2837 | } | |
2838 | } | |
2839 | ||
2840 | if (migration_in_setup(s) && !should_be_hidden && | |
2841 | n->primary_dev) { | |
2842 | if (failover_unplug_primary(n)) { | |
2843 | vmstate_unregister(n->primary_dev, qdev_get_vmsd(n->primary_dev), | |
2844 | n->primary_dev); | |
2845 | qapi_event_send_unplug_primary(n->primary_device_id); | |
2846 | atomic_set(&n->primary_should_be_hidden, true); | |
2847 | } else { | |
2848 | warn_report("couldn't unplug primary device"); | |
2849 | } | |
2850 | } else if (migration_has_failed(s)) { | |
2851 | /* We already unplugged the device let's plugged it back */ | |
2852 | if (!failover_replug_primary(n, &err)) { | |
2853 | if (err) { | |
2854 | error_report_err(err); | |
2855 | } | |
2856 | } | |
2857 | } | |
2858 | } | |
2859 | ||
2860 | static void virtio_net_migration_state_notifier(Notifier *notifier, void *data) | |
2861 | { | |
2862 | MigrationState *s = data; | |
2863 | VirtIONet *n = container_of(notifier, VirtIONet, migration_state); | |
2864 | virtio_net_handle_migration_primary(n, s); | |
2865 | } | |
2866 | ||
2867 | static int virtio_net_primary_should_be_hidden(DeviceListener *listener, | |
2868 | QemuOpts *device_opts) | |
2869 | { | |
2870 | VirtIONet *n = container_of(listener, VirtIONet, primary_listener); | |
2871 | bool match_found; | |
2872 | bool hide; | |
2873 | ||
2874 | n->primary_device_dict = qemu_opts_to_qdict(device_opts, | |
2875 | n->primary_device_dict); | |
2876 | if (n->primary_device_dict) { | |
2877 | g_free(n->standby_id); | |
2878 | n->standby_id = g_strdup(qdict_get_try_str(n->primary_device_dict, | |
2879 | "failover_pair_id")); | |
2880 | } | |
2881 | if (device_opts && g_strcmp0(n->standby_id, n->netclient_name) == 0) { | |
2882 | match_found = true; | |
2883 | } else { | |
2884 | match_found = false; | |
2885 | hide = false; | |
2886 | g_free(n->standby_id); | |
2887 | n->primary_device_dict = NULL; | |
2888 | goto out; | |
2889 | } | |
2890 | ||
2891 | n->primary_device_opts = device_opts; | |
2892 | ||
2893 | /* primary_should_be_hidden is set during feature negotiation */ | |
2894 | hide = atomic_read(&n->primary_should_be_hidden); | |
2895 | ||
2896 | if (n->primary_device_dict) { | |
2897 | g_free(n->primary_device_id); | |
2898 | n->primary_device_id = g_strdup(qdict_get_try_str( | |
2899 | n->primary_device_dict, "id")); | |
2900 | if (!n->primary_device_id) { | |
2901 | warn_report("primary_device_id not set"); | |
2902 | } | |
2903 | } | |
2904 | ||
2905 | out: | |
2906 | if (match_found && hide) { | |
2907 | return 1; | |
2908 | } else if (match_found && !hide) { | |
2909 | return 0; | |
2910 | } else { | |
2911 | return -1; | |
2912 | } | |
2913 | } | |
2914 | ||
e6f746b3 | 2915 | static void virtio_net_device_realize(DeviceState *dev, Error **errp) |
17ec5a86 | 2916 | { |
e6f746b3 | 2917 | VirtIODevice *vdev = VIRTIO_DEVICE(dev); |
284a32f0 | 2918 | VirtIONet *n = VIRTIO_NET(dev); |
b1be4280 | 2919 | NetClientState *nc; |
284a32f0 | 2920 | int i; |
1773d9ee | 2921 | |
a93e599d | 2922 | if (n->net_conf.mtu) { |
127833ee | 2923 | n->host_features |= (1ULL << VIRTIO_NET_F_MTU); |
a93e599d MC |
2924 | } |
2925 | ||
9473939e JB |
2926 | if (n->net_conf.duplex_str) { |
2927 | if (strncmp(n->net_conf.duplex_str, "half", 5) == 0) { | |
2928 | n->net_conf.duplex = DUPLEX_HALF; | |
2929 | } else if (strncmp(n->net_conf.duplex_str, "full", 5) == 0) { | |
2930 | n->net_conf.duplex = DUPLEX_FULL; | |
2931 | } else { | |
2932 | error_setg(errp, "'duplex' must be 'half' or 'full'"); | |
2933 | } | |
2934 | n->host_features |= (1ULL << VIRTIO_NET_F_SPEED_DUPLEX); | |
2935 | } else { | |
2936 | n->net_conf.duplex = DUPLEX_UNKNOWN; | |
2937 | } | |
2938 | ||
2939 | if (n->net_conf.speed < SPEED_UNKNOWN) { | |
2940 | error_setg(errp, "'speed' must be between 0 and INT_MAX"); | |
2941 | } else if (n->net_conf.speed >= 0) { | |
2942 | n->host_features |= (1ULL << VIRTIO_NET_F_SPEED_DUPLEX); | |
2943 | } | |
2944 | ||
9711cd0d JF |
2945 | if (n->failover) { |
2946 | n->primary_listener.should_be_hidden = | |
2947 | virtio_net_primary_should_be_hidden; | |
2948 | atomic_set(&n->primary_should_be_hidden, true); | |
2949 | device_listener_register(&n->primary_listener); | |
2950 | n->migration_state.notify = virtio_net_migration_state_notifier; | |
2951 | add_migration_state_change_notifier(&n->migration_state); | |
2952 | n->host_features |= (1ULL << VIRTIO_NET_F_STANDBY); | |
2953 | } | |
2954 | ||
da3e8a23 | 2955 | virtio_net_set_config_size(n, n->host_features); |
284a32f0 | 2956 | virtio_init(vdev, "virtio-net", VIRTIO_ID_NET, n->config_size); |
fbe78f4f | 2957 | |
1c0fbfa3 MT |
2958 | /* |
2959 | * We set a lower limit on RX queue size to what it always was. | |
2960 | * Guests that want a smaller ring can always resize it without | |
2961 | * help from us (using virtio 1 and up). | |
2962 | */ | |
2963 | if (n->net_conf.rx_queue_size < VIRTIO_NET_RX_QUEUE_MIN_SIZE || | |
2964 | n->net_conf.rx_queue_size > VIRTQUEUE_MAX_SIZE || | |
5f997fd1 | 2965 | !is_power_of_2(n->net_conf.rx_queue_size)) { |
1c0fbfa3 MT |
2966 | error_setg(errp, "Invalid rx_queue_size (= %" PRIu16 "), " |
2967 | "must be a power of 2 between %d and %d.", | |
2968 | n->net_conf.rx_queue_size, VIRTIO_NET_RX_QUEUE_MIN_SIZE, | |
2969 | VIRTQUEUE_MAX_SIZE); | |
2970 | virtio_cleanup(vdev); | |
2971 | return; | |
2972 | } | |
2973 | ||
9b02e161 WW |
2974 | if (n->net_conf.tx_queue_size < VIRTIO_NET_TX_QUEUE_MIN_SIZE || |
2975 | n->net_conf.tx_queue_size > VIRTQUEUE_MAX_SIZE || | |
2976 | !is_power_of_2(n->net_conf.tx_queue_size)) { | |
2977 | error_setg(errp, "Invalid tx_queue_size (= %" PRIu16 "), " | |
2978 | "must be a power of 2 between %d and %d", | |
2979 | n->net_conf.tx_queue_size, VIRTIO_NET_TX_QUEUE_MIN_SIZE, | |
2980 | VIRTQUEUE_MAX_SIZE); | |
2981 | virtio_cleanup(vdev); | |
2982 | return; | |
2983 | } | |
2984 | ||
575a1c0e | 2985 | n->max_queues = MAX(n->nic_conf.peers.queues, 1); |
87b3bd1c | 2986 | if (n->max_queues * 2 + 1 > VIRTIO_QUEUE_MAX) { |
7e0e736e | 2987 | error_setg(errp, "Invalid number of queues (= %" PRIu32 "), " |
631b22ea | 2988 | "must be a positive integer less than %d.", |
87b3bd1c | 2989 | n->max_queues, (VIRTIO_QUEUE_MAX - 1) / 2); |
7e0e736e JW |
2990 | virtio_cleanup(vdev); |
2991 | return; | |
2992 | } | |
f6b26cf2 | 2993 | n->vqs = g_malloc0(sizeof(VirtIONetQueue) * n->max_queues); |
fed699f9 | 2994 | n->curr_queues = 1; |
1773d9ee | 2995 | n->tx_timeout = n->net_conf.txtimer; |
a697a334 | 2996 | |
1773d9ee FK |
2997 | if (n->net_conf.tx && strcmp(n->net_conf.tx, "timer") |
2998 | && strcmp(n->net_conf.tx, "bh")) { | |
0765691e MA |
2999 | warn_report("virtio-net: " |
3000 | "Unknown option tx=%s, valid options: \"timer\" \"bh\"", | |
3001 | n->net_conf.tx); | |
3002 | error_printf("Defaulting to \"bh\""); | |
a697a334 AW |
3003 | } |
3004 | ||
2eef278b MT |
3005 | n->net_conf.tx_queue_size = MIN(virtio_net_max_tx_queue_size(n), |
3006 | n->net_conf.tx_queue_size); | |
9b02e161 | 3007 | |
da51a335 | 3008 | for (i = 0; i < n->max_queues; i++) { |
f9d6dbf0 | 3009 | virtio_net_add_queue(n, i); |
a697a334 | 3010 | } |
da51a335 | 3011 | |
17a0ca55 | 3012 | n->ctrl_vq = virtio_add_queue(vdev, 64, virtio_net_handle_ctrl); |
1773d9ee FK |
3013 | qemu_macaddr_default_if_unset(&n->nic_conf.macaddr); |
3014 | memcpy(&n->mac[0], &n->nic_conf.macaddr, sizeof(n->mac)); | |
554c97dd | 3015 | n->status = VIRTIO_NET_S_LINK_UP; |
9d8c6a25 DDAG |
3016 | qemu_announce_timer_reset(&n->announce_timer, migrate_announce_params(), |
3017 | QEMU_CLOCK_VIRTUAL, | |
3018 | virtio_net_announce_timer, n); | |
b2c929f0 | 3019 | n->announce_timer.round = 0; |
fbe78f4f | 3020 | |
8a253ec2 FK |
3021 | if (n->netclient_type) { |
3022 | /* | |
3023 | * Happen when virtio_net_set_netclient_name has been called. | |
3024 | */ | |
3025 | n->nic = qemu_new_nic(&net_virtio_info, &n->nic_conf, | |
3026 | n->netclient_type, n->netclient_name, n); | |
3027 | } else { | |
3028 | n->nic = qemu_new_nic(&net_virtio_info, &n->nic_conf, | |
284a32f0 | 3029 | object_get_typename(OBJECT(dev)), dev->id, n); |
8a253ec2 FK |
3030 | } |
3031 | ||
6e371ab8 MT |
3032 | peer_test_vnet_hdr(n); |
3033 | if (peer_has_vnet_hdr(n)) { | |
fed699f9 | 3034 | for (i = 0; i < n->max_queues; i++) { |
d6085e3a | 3035 | qemu_using_vnet_hdr(qemu_get_subqueue(n->nic, i)->peer, true); |
fed699f9 | 3036 | } |
6e371ab8 MT |
3037 | n->host_hdr_len = sizeof(struct virtio_net_hdr); |
3038 | } else { | |
3039 | n->host_hdr_len = 0; | |
3040 | } | |
eb6b6c12 | 3041 | |
1773d9ee | 3042 | qemu_format_nic_info_str(qemu_get_queue(n->nic), n->nic_conf.macaddr.a); |
96d5e201 | 3043 | |
fed699f9 | 3044 | n->vqs[0].tx_waiting = 0; |
1773d9ee | 3045 | n->tx_burst = n->net_conf.txburst; |
bb9d17f8 | 3046 | virtio_net_set_mrg_rx_bufs(n, 0, 0); |
002437cd | 3047 | n->promisc = 1; /* for compatibility */ |
fbe78f4f | 3048 | |
7267c094 | 3049 | n->mac_table.macs = g_malloc0(MAC_TABLE_ENTRIES * ETH_ALEN); |
b6503ed9 | 3050 | |
7267c094 | 3051 | n->vlans = g_malloc0(MAX_VLAN >> 3); |
f21c0ed9 | 3052 | |
b1be4280 AK |
3053 | nc = qemu_get_queue(n->nic); |
3054 | nc->rxfilter_notify_enabled = 1; | |
3055 | ||
2974e916 | 3056 | QTAILQ_INIT(&n->rsc_chains); |
284a32f0 | 3057 | n->qdev = dev; |
17ec5a86 FK |
3058 | } |
3059 | ||
306ec6c3 | 3060 | static void virtio_net_device_unrealize(DeviceState *dev, Error **errp) |
17ec5a86 | 3061 | { |
306ec6c3 AF |
3062 | VirtIODevice *vdev = VIRTIO_DEVICE(dev); |
3063 | VirtIONet *n = VIRTIO_NET(dev); | |
f9d6dbf0 | 3064 | int i, max_queues; |
17ec5a86 FK |
3065 | |
3066 | /* This will stop vhost backend if appropriate. */ | |
3067 | virtio_net_set_status(vdev, 0); | |
3068 | ||
9e288406 MA |
3069 | g_free(n->netclient_name); |
3070 | n->netclient_name = NULL; | |
3071 | g_free(n->netclient_type); | |
3072 | n->netclient_type = NULL; | |
8a253ec2 | 3073 | |
17ec5a86 FK |
3074 | g_free(n->mac_table.macs); |
3075 | g_free(n->vlans); | |
3076 | ||
9711cd0d JF |
3077 | if (n->failover) { |
3078 | g_free(n->primary_device_id); | |
3079 | g_free(n->standby_id); | |
3080 | qobject_unref(n->primary_device_dict); | |
3081 | n->primary_device_dict = NULL; | |
3082 | } | |
3083 | ||
f9d6dbf0 WC |
3084 | max_queues = n->multiqueue ? n->max_queues : 1; |
3085 | for (i = 0; i < max_queues; i++) { | |
3086 | virtio_net_del_queue(n, i); | |
17ec5a86 FK |
3087 | } |
3088 | ||
944458b6 | 3089 | qemu_announce_timer_del(&n->announce_timer, false); |
17ec5a86 FK |
3090 | g_free(n->vqs); |
3091 | qemu_del_nic(n->nic); | |
2974e916 | 3092 | virtio_net_rsc_cleanup(n); |
6a1a8cc7 | 3093 | virtio_cleanup(vdev); |
17ec5a86 FK |
3094 | } |
3095 | ||
3096 | static void virtio_net_instance_init(Object *obj) | |
3097 | { | |
3098 | VirtIONet *n = VIRTIO_NET(obj); | |
3099 | ||
3100 | /* | |
3101 | * The default config_size is sizeof(struct virtio_net_config). | |
3102 | * Can be overriden with virtio_net_set_config_size. | |
3103 | */ | |
3104 | n->config_size = sizeof(struct virtio_net_config); | |
aa4197c3 GA |
3105 | device_add_bootindex_property(obj, &n->nic_conf.bootindex, |
3106 | "bootindex", "/ethernet-phy@0", | |
3107 | DEVICE(n), NULL); | |
17ec5a86 FK |
3108 | } |
3109 | ||
44b1ff31 | 3110 | static int virtio_net_pre_save(void *opaque) |
4d45dcfb HP |
3111 | { |
3112 | VirtIONet *n = opaque; | |
3113 | ||
3114 | /* At this point, backend must be stopped, otherwise | |
3115 | * it might keep writing to memory. */ | |
3116 | assert(!n->vhost_started); | |
44b1ff31 DDAG |
3117 | |
3118 | return 0; | |
4d45dcfb HP |
3119 | } |
3120 | ||
9711cd0d JF |
3121 | static bool primary_unplug_pending(void *opaque) |
3122 | { | |
3123 | DeviceState *dev = opaque; | |
3124 | VirtIODevice *vdev = VIRTIO_DEVICE(dev); | |
3125 | VirtIONet *n = VIRTIO_NET(vdev); | |
3126 | ||
284f42a5 JF |
3127 | if (!virtio_vdev_has_feature(vdev, VIRTIO_NET_F_STANDBY)) { |
3128 | return false; | |
3129 | } | |
9711cd0d JF |
3130 | return n->primary_dev ? n->primary_dev->pending_deleted_event : false; |
3131 | } | |
3132 | ||
3133 | static bool dev_unplug_pending(void *opaque) | |
3134 | { | |
3135 | DeviceState *dev = opaque; | |
3136 | VirtioDeviceClass *vdc = VIRTIO_DEVICE_GET_CLASS(dev); | |
3137 | ||
3138 | return vdc->primary_unplug_pending(dev); | |
3139 | } | |
3140 | ||
4d45dcfb HP |
3141 | static const VMStateDescription vmstate_virtio_net = { |
3142 | .name = "virtio-net", | |
3143 | .minimum_version_id = VIRTIO_NET_VM_VERSION, | |
3144 | .version_id = VIRTIO_NET_VM_VERSION, | |
3145 | .fields = (VMStateField[]) { | |
3146 | VMSTATE_VIRTIO_DEVICE, | |
3147 | VMSTATE_END_OF_LIST() | |
3148 | }, | |
3149 | .pre_save = virtio_net_pre_save, | |
9711cd0d | 3150 | .dev_unplug_pending = dev_unplug_pending, |
4d45dcfb | 3151 | }; |
290c2428 | 3152 | |
17ec5a86 | 3153 | static Property virtio_net_properties[] = { |
127833ee JB |
3154 | DEFINE_PROP_BIT64("csum", VirtIONet, host_features, |
3155 | VIRTIO_NET_F_CSUM, true), | |
3156 | DEFINE_PROP_BIT64("guest_csum", VirtIONet, host_features, | |
87108bb2 | 3157 | VIRTIO_NET_F_GUEST_CSUM, true), |
127833ee JB |
3158 | DEFINE_PROP_BIT64("gso", VirtIONet, host_features, VIRTIO_NET_F_GSO, true), |
3159 | DEFINE_PROP_BIT64("guest_tso4", VirtIONet, host_features, | |
87108bb2 | 3160 | VIRTIO_NET_F_GUEST_TSO4, true), |
127833ee | 3161 | DEFINE_PROP_BIT64("guest_tso6", VirtIONet, host_features, |
87108bb2 | 3162 | VIRTIO_NET_F_GUEST_TSO6, true), |
127833ee | 3163 | DEFINE_PROP_BIT64("guest_ecn", VirtIONet, host_features, |
87108bb2 | 3164 | VIRTIO_NET_F_GUEST_ECN, true), |
127833ee | 3165 | DEFINE_PROP_BIT64("guest_ufo", VirtIONet, host_features, |
87108bb2 | 3166 | VIRTIO_NET_F_GUEST_UFO, true), |
127833ee | 3167 | DEFINE_PROP_BIT64("guest_announce", VirtIONet, host_features, |
87108bb2 | 3168 | VIRTIO_NET_F_GUEST_ANNOUNCE, true), |
127833ee | 3169 | DEFINE_PROP_BIT64("host_tso4", VirtIONet, host_features, |
87108bb2 | 3170 | VIRTIO_NET_F_HOST_TSO4, true), |
127833ee | 3171 | DEFINE_PROP_BIT64("host_tso6", VirtIONet, host_features, |
87108bb2 | 3172 | VIRTIO_NET_F_HOST_TSO6, true), |
127833ee | 3173 | DEFINE_PROP_BIT64("host_ecn", VirtIONet, host_features, |
87108bb2 | 3174 | VIRTIO_NET_F_HOST_ECN, true), |
127833ee | 3175 | DEFINE_PROP_BIT64("host_ufo", VirtIONet, host_features, |
87108bb2 | 3176 | VIRTIO_NET_F_HOST_UFO, true), |
127833ee | 3177 | DEFINE_PROP_BIT64("mrg_rxbuf", VirtIONet, host_features, |
87108bb2 | 3178 | VIRTIO_NET_F_MRG_RXBUF, true), |
127833ee | 3179 | DEFINE_PROP_BIT64("status", VirtIONet, host_features, |
87108bb2 | 3180 | VIRTIO_NET_F_STATUS, true), |
127833ee | 3181 | DEFINE_PROP_BIT64("ctrl_vq", VirtIONet, host_features, |
87108bb2 | 3182 | VIRTIO_NET_F_CTRL_VQ, true), |
127833ee | 3183 | DEFINE_PROP_BIT64("ctrl_rx", VirtIONet, host_features, |
87108bb2 | 3184 | VIRTIO_NET_F_CTRL_RX, true), |
127833ee | 3185 | DEFINE_PROP_BIT64("ctrl_vlan", VirtIONet, host_features, |
87108bb2 | 3186 | VIRTIO_NET_F_CTRL_VLAN, true), |
127833ee | 3187 | DEFINE_PROP_BIT64("ctrl_rx_extra", VirtIONet, host_features, |
87108bb2 | 3188 | VIRTIO_NET_F_CTRL_RX_EXTRA, true), |
127833ee | 3189 | DEFINE_PROP_BIT64("ctrl_mac_addr", VirtIONet, host_features, |
87108bb2 | 3190 | VIRTIO_NET_F_CTRL_MAC_ADDR, true), |
127833ee | 3191 | DEFINE_PROP_BIT64("ctrl_guest_offloads", VirtIONet, host_features, |
87108bb2 | 3192 | VIRTIO_NET_F_CTRL_GUEST_OFFLOADS, true), |
127833ee | 3193 | DEFINE_PROP_BIT64("mq", VirtIONet, host_features, VIRTIO_NET_F_MQ, false), |
2974e916 YB |
3194 | DEFINE_PROP_BIT64("guest_rsc_ext", VirtIONet, host_features, |
3195 | VIRTIO_NET_F_RSC_EXT, false), | |
3196 | DEFINE_PROP_UINT32("rsc_interval", VirtIONet, rsc_timeout, | |
3197 | VIRTIO_NET_RSC_DEFAULT_INTERVAL), | |
17ec5a86 FK |
3198 | DEFINE_NIC_PROPERTIES(VirtIONet, nic_conf), |
3199 | DEFINE_PROP_UINT32("x-txtimer", VirtIONet, net_conf.txtimer, | |
87108bb2 | 3200 | TX_TIMER_INTERVAL), |
17ec5a86 FK |
3201 | DEFINE_PROP_INT32("x-txburst", VirtIONet, net_conf.txburst, TX_BURST), |
3202 | DEFINE_PROP_STRING("tx", VirtIONet, net_conf.tx), | |
1c0fbfa3 MT |
3203 | DEFINE_PROP_UINT16("rx_queue_size", VirtIONet, net_conf.rx_queue_size, |
3204 | VIRTIO_NET_RX_QUEUE_DEFAULT_SIZE), | |
9b02e161 WW |
3205 | DEFINE_PROP_UINT16("tx_queue_size", VirtIONet, net_conf.tx_queue_size, |
3206 | VIRTIO_NET_TX_QUEUE_DEFAULT_SIZE), | |
a93e599d | 3207 | DEFINE_PROP_UINT16("host_mtu", VirtIONet, net_conf.mtu, 0), |
75ebec11 MC |
3208 | DEFINE_PROP_BOOL("x-mtu-bypass-backend", VirtIONet, mtu_bypass_backend, |
3209 | true), | |
9473939e JB |
3210 | DEFINE_PROP_INT32("speed", VirtIONet, net_conf.speed, SPEED_UNKNOWN), |
3211 | DEFINE_PROP_STRING("duplex", VirtIONet, net_conf.duplex_str), | |
9711cd0d | 3212 | DEFINE_PROP_BOOL("failover", VirtIONet, failover, false), |
17ec5a86 FK |
3213 | DEFINE_PROP_END_OF_LIST(), |
3214 | }; | |
3215 | ||
3216 | static void virtio_net_class_init(ObjectClass *klass, void *data) | |
3217 | { | |
3218 | DeviceClass *dc = DEVICE_CLASS(klass); | |
3219 | VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass); | |
e6f746b3 | 3220 | |
17ec5a86 | 3221 | dc->props = virtio_net_properties; |
290c2428 | 3222 | dc->vmsd = &vmstate_virtio_net; |
125ee0ed | 3223 | set_bit(DEVICE_CATEGORY_NETWORK, dc->categories); |
e6f746b3 | 3224 | vdc->realize = virtio_net_device_realize; |
306ec6c3 | 3225 | vdc->unrealize = virtio_net_device_unrealize; |
17ec5a86 FK |
3226 | vdc->get_config = virtio_net_get_config; |
3227 | vdc->set_config = virtio_net_set_config; | |
3228 | vdc->get_features = virtio_net_get_features; | |
3229 | vdc->set_features = virtio_net_set_features; | |
3230 | vdc->bad_features = virtio_net_bad_features; | |
3231 | vdc->reset = virtio_net_reset; | |
3232 | vdc->set_status = virtio_net_set_status; | |
3233 | vdc->guest_notifier_mask = virtio_net_guest_notifier_mask; | |
3234 | vdc->guest_notifier_pending = virtio_net_guest_notifier_pending; | |
2a083ffd | 3235 | vdc->legacy_features |= (0x1 << VIRTIO_NET_F_GSO); |
7788c3f2 | 3236 | vdc->post_load = virtio_net_post_load_virtio; |
982b78c5 | 3237 | vdc->vmsd = &vmstate_virtio_net_device; |
9711cd0d | 3238 | vdc->primary_unplug_pending = primary_unplug_pending; |
17ec5a86 FK |
3239 | } |
3240 | ||
3241 | static const TypeInfo virtio_net_info = { | |
3242 | .name = TYPE_VIRTIO_NET, | |
3243 | .parent = TYPE_VIRTIO_DEVICE, | |
3244 | .instance_size = sizeof(VirtIONet), | |
3245 | .instance_init = virtio_net_instance_init, | |
3246 | .class_init = virtio_net_class_init, | |
3247 | }; | |
3248 | ||
3249 | static void virtio_register_types(void) | |
3250 | { | |
3251 | type_register_static(&virtio_net_info); | |
3252 | } | |
3253 | ||
3254 | type_init(virtio_register_types) |