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[ceph.git] / ceph / src / seastar / dpdk / drivers / net / virtio / virtio_ethdev.c
1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2016 Intel Corporation
3 */
4
5 #include <stdint.h>
6 #include <string.h>
7 #include <stdio.h>
8 #include <errno.h>
9 #include <unistd.h>
10
11 #include <rte_ethdev_driver.h>
12 #include <rte_ethdev_pci.h>
13 #include <rte_memcpy.h>
14 #include <rte_string_fns.h>
15 #include <rte_memzone.h>
16 #include <rte_malloc.h>
17 #include <rte_branch_prediction.h>
18 #include <rte_pci.h>
19 #include <rte_bus_pci.h>
20 #include <rte_ether.h>
21 #include <rte_ip.h>
22 #include <rte_arp.h>
23 #include <rte_common.h>
24 #include <rte_errno.h>
25 #include <rte_cpuflags.h>
26
27 #include <rte_memory.h>
28 #include <rte_eal.h>
29 #include <rte_dev.h>
30 #include <rte_cycles.h>
31 #include <rte_kvargs.h>
32
33 #include "virtio_ethdev.h"
34 #include "virtio_pci.h"
35 #include "virtio_logs.h"
36 #include "virtqueue.h"
37 #include "virtio_rxtx.h"
38
39 static int eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev);
40 static int virtio_dev_configure(struct rte_eth_dev *dev);
41 static int virtio_dev_start(struct rte_eth_dev *dev);
42 static void virtio_dev_stop(struct rte_eth_dev *dev);
43 static void virtio_dev_promiscuous_enable(struct rte_eth_dev *dev);
44 static void virtio_dev_promiscuous_disable(struct rte_eth_dev *dev);
45 static void virtio_dev_allmulticast_enable(struct rte_eth_dev *dev);
46 static void virtio_dev_allmulticast_disable(struct rte_eth_dev *dev);
47 static void virtio_dev_info_get(struct rte_eth_dev *dev,
48 struct rte_eth_dev_info *dev_info);
49 static int virtio_dev_link_update(struct rte_eth_dev *dev,
50 int wait_to_complete);
51 static int virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask);
52
53 static void virtio_set_hwaddr(struct virtio_hw *hw);
54 static void virtio_get_hwaddr(struct virtio_hw *hw);
55
56 static int virtio_dev_stats_get(struct rte_eth_dev *dev,
57 struct rte_eth_stats *stats);
58 static int virtio_dev_xstats_get(struct rte_eth_dev *dev,
59 struct rte_eth_xstat *xstats, unsigned n);
60 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev,
61 struct rte_eth_xstat_name *xstats_names,
62 unsigned limit);
63 static void virtio_dev_stats_reset(struct rte_eth_dev *dev);
64 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev);
65 static int virtio_vlan_filter_set(struct rte_eth_dev *dev,
66 uint16_t vlan_id, int on);
67 static int virtio_mac_addr_add(struct rte_eth_dev *dev,
68 struct ether_addr *mac_addr,
69 uint32_t index, uint32_t vmdq);
70 static void virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index);
71 static int virtio_mac_addr_set(struct rte_eth_dev *dev,
72 struct ether_addr *mac_addr);
73
74 static int virtio_intr_disable(struct rte_eth_dev *dev);
75
76 static int virtio_dev_queue_stats_mapping_set(
77 struct rte_eth_dev *eth_dev,
78 uint16_t queue_id,
79 uint8_t stat_idx,
80 uint8_t is_rx);
81
82 int virtio_logtype_init;
83 int virtio_logtype_driver;
84
85 static void virtio_notify_peers(struct rte_eth_dev *dev);
86 static void virtio_ack_link_announce(struct rte_eth_dev *dev);
87
88 /*
89 * The set of PCI devices this driver supports
90 */
91 static const struct rte_pci_id pci_id_virtio_map[] = {
92 { RTE_PCI_DEVICE(VIRTIO_PCI_VENDORID, VIRTIO_PCI_LEGACY_DEVICEID_NET) },
93 { RTE_PCI_DEVICE(VIRTIO_PCI_VENDORID, VIRTIO_PCI_MODERN_DEVICEID_NET) },
94 { .vendor_id = 0, /* sentinel */ },
95 };
96
97 struct rte_virtio_xstats_name_off {
98 char name[RTE_ETH_XSTATS_NAME_SIZE];
99 unsigned offset;
100 };
101
102 /* [rt]x_qX_ is prepended to the name string here */
103 static const struct rte_virtio_xstats_name_off rte_virtio_rxq_stat_strings[] = {
104 {"good_packets", offsetof(struct virtnet_rx, stats.packets)},
105 {"good_bytes", offsetof(struct virtnet_rx, stats.bytes)},
106 {"errors", offsetof(struct virtnet_rx, stats.errors)},
107 {"multicast_packets", offsetof(struct virtnet_rx, stats.multicast)},
108 {"broadcast_packets", offsetof(struct virtnet_rx, stats.broadcast)},
109 {"undersize_packets", offsetof(struct virtnet_rx, stats.size_bins[0])},
110 {"size_64_packets", offsetof(struct virtnet_rx, stats.size_bins[1])},
111 {"size_65_127_packets", offsetof(struct virtnet_rx, stats.size_bins[2])},
112 {"size_128_255_packets", offsetof(struct virtnet_rx, stats.size_bins[3])},
113 {"size_256_511_packets", offsetof(struct virtnet_rx, stats.size_bins[4])},
114 {"size_512_1023_packets", offsetof(struct virtnet_rx, stats.size_bins[5])},
115 {"size_1024_1518_packets", offsetof(struct virtnet_rx, stats.size_bins[6])},
116 {"size_1519_max_packets", offsetof(struct virtnet_rx, stats.size_bins[7])},
117 };
118
119 /* [rt]x_qX_ is prepended to the name string here */
120 static const struct rte_virtio_xstats_name_off rte_virtio_txq_stat_strings[] = {
121 {"good_packets", offsetof(struct virtnet_tx, stats.packets)},
122 {"good_bytes", offsetof(struct virtnet_tx, stats.bytes)},
123 {"errors", offsetof(struct virtnet_tx, stats.errors)},
124 {"multicast_packets", offsetof(struct virtnet_tx, stats.multicast)},
125 {"broadcast_packets", offsetof(struct virtnet_tx, stats.broadcast)},
126 {"undersize_packets", offsetof(struct virtnet_tx, stats.size_bins[0])},
127 {"size_64_packets", offsetof(struct virtnet_tx, stats.size_bins[1])},
128 {"size_65_127_packets", offsetof(struct virtnet_tx, stats.size_bins[2])},
129 {"size_128_255_packets", offsetof(struct virtnet_tx, stats.size_bins[3])},
130 {"size_256_511_packets", offsetof(struct virtnet_tx, stats.size_bins[4])},
131 {"size_512_1023_packets", offsetof(struct virtnet_tx, stats.size_bins[5])},
132 {"size_1024_1518_packets", offsetof(struct virtnet_tx, stats.size_bins[6])},
133 {"size_1519_max_packets", offsetof(struct virtnet_tx, stats.size_bins[7])},
134 };
135
136 #define VIRTIO_NB_RXQ_XSTATS (sizeof(rte_virtio_rxq_stat_strings) / \
137 sizeof(rte_virtio_rxq_stat_strings[0]))
138 #define VIRTIO_NB_TXQ_XSTATS (sizeof(rte_virtio_txq_stat_strings) / \
139 sizeof(rte_virtio_txq_stat_strings[0]))
140
141 struct virtio_hw_internal virtio_hw_internal[RTE_MAX_ETHPORTS];
142
143 static struct virtio_pmd_ctrl *
144 virtio_send_command_packed(struct virtnet_ctl *cvq,
145 struct virtio_pmd_ctrl *ctrl,
146 int *dlen, int pkt_num)
147 {
148 struct virtqueue *vq = cvq->vq;
149 int head;
150 struct vring_packed_desc *desc = vq->vq_packed.ring.desc;
151 struct virtio_pmd_ctrl *result;
152 uint16_t flags;
153 int sum = 0;
154 int nb_descs = 0;
155 int k;
156
157 /*
158 * Format is enforced in qemu code:
159 * One TX packet for header;
160 * At least one TX packet per argument;
161 * One RX packet for ACK.
162 */
163 head = vq->vq_avail_idx;
164 flags = vq->vq_packed.cached_flags;
165 desc[head].addr = cvq->virtio_net_hdr_mem;
166 desc[head].len = sizeof(struct virtio_net_ctrl_hdr);
167 vq->vq_free_cnt--;
168 nb_descs++;
169 if (++vq->vq_avail_idx >= vq->vq_nentries) {
170 vq->vq_avail_idx -= vq->vq_nentries;
171 vq->vq_packed.cached_flags ^= VRING_PACKED_DESC_F_AVAIL_USED;
172 }
173
174 for (k = 0; k < pkt_num; k++) {
175 desc[vq->vq_avail_idx].addr = cvq->virtio_net_hdr_mem
176 + sizeof(struct virtio_net_ctrl_hdr)
177 + sizeof(ctrl->status) + sizeof(uint8_t) * sum;
178 desc[vq->vq_avail_idx].len = dlen[k];
179 desc[vq->vq_avail_idx].flags = VRING_DESC_F_NEXT |
180 vq->vq_packed.cached_flags;
181 sum += dlen[k];
182 vq->vq_free_cnt--;
183 nb_descs++;
184 if (++vq->vq_avail_idx >= vq->vq_nentries) {
185 vq->vq_avail_idx -= vq->vq_nentries;
186 vq->vq_packed.cached_flags ^=
187 VRING_PACKED_DESC_F_AVAIL_USED;
188 }
189 }
190
191 desc[vq->vq_avail_idx].addr = cvq->virtio_net_hdr_mem
192 + sizeof(struct virtio_net_ctrl_hdr);
193 desc[vq->vq_avail_idx].len = sizeof(ctrl->status);
194 desc[vq->vq_avail_idx].flags = VRING_DESC_F_WRITE |
195 vq->vq_packed.cached_flags;
196 vq->vq_free_cnt--;
197 nb_descs++;
198 if (++vq->vq_avail_idx >= vq->vq_nentries) {
199 vq->vq_avail_idx -= vq->vq_nentries;
200 vq->vq_packed.cached_flags ^= VRING_PACKED_DESC_F_AVAIL_USED;
201 }
202
203 virtio_wmb(vq->hw->weak_barriers);
204 desc[head].flags = VRING_DESC_F_NEXT | flags;
205
206 virtio_wmb(vq->hw->weak_barriers);
207 virtqueue_notify(vq);
208
209 /* wait for used descriptors in virtqueue */
210 while (!desc_is_used(&desc[head], vq))
211 usleep(100);
212
213 virtio_rmb(vq->hw->weak_barriers);
214
215 /* now get used descriptors */
216 vq->vq_free_cnt += nb_descs;
217 vq->vq_used_cons_idx += nb_descs;
218 if (vq->vq_used_cons_idx >= vq->vq_nentries) {
219 vq->vq_used_cons_idx -= vq->vq_nentries;
220 vq->vq_packed.used_wrap_counter ^= 1;
221 }
222
223 PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\n"
224 "vq->vq_avail_idx=%d\n"
225 "vq->vq_used_cons_idx=%d\n"
226 "vq->vq_packed.cached_flags=0x%x\n"
227 "vq->vq_packed.used_wrap_counter=%d\n",
228 vq->vq_free_cnt,
229 vq->vq_avail_idx,
230 vq->vq_used_cons_idx,
231 vq->vq_packed.cached_flags,
232 vq->vq_packed.used_wrap_counter);
233
234 result = cvq->virtio_net_hdr_mz->addr;
235 return result;
236 }
237
238 static struct virtio_pmd_ctrl *
239 virtio_send_command_split(struct virtnet_ctl *cvq,
240 struct virtio_pmd_ctrl *ctrl,
241 int *dlen, int pkt_num)
242 {
243 struct virtio_pmd_ctrl *result;
244 struct virtqueue *vq = cvq->vq;
245 uint32_t head, i;
246 int k, sum = 0;
247
248 head = vq->vq_desc_head_idx;
249
250 /*
251 * Format is enforced in qemu code:
252 * One TX packet for header;
253 * At least one TX packet per argument;
254 * One RX packet for ACK.
255 */
256 vq->vq_split.ring.desc[head].flags = VRING_DESC_F_NEXT;
257 vq->vq_split.ring.desc[head].addr = cvq->virtio_net_hdr_mem;
258 vq->vq_split.ring.desc[head].len = sizeof(struct virtio_net_ctrl_hdr);
259 vq->vq_free_cnt--;
260 i = vq->vq_split.ring.desc[head].next;
261
262 for (k = 0; k < pkt_num; k++) {
263 vq->vq_split.ring.desc[i].flags = VRING_DESC_F_NEXT;
264 vq->vq_split.ring.desc[i].addr = cvq->virtio_net_hdr_mem
265 + sizeof(struct virtio_net_ctrl_hdr)
266 + sizeof(ctrl->status) + sizeof(uint8_t)*sum;
267 vq->vq_split.ring.desc[i].len = dlen[k];
268 sum += dlen[k];
269 vq->vq_free_cnt--;
270 i = vq->vq_split.ring.desc[i].next;
271 }
272
273 vq->vq_split.ring.desc[i].flags = VRING_DESC_F_WRITE;
274 vq->vq_split.ring.desc[i].addr = cvq->virtio_net_hdr_mem
275 + sizeof(struct virtio_net_ctrl_hdr);
276 vq->vq_split.ring.desc[i].len = sizeof(ctrl->status);
277 vq->vq_free_cnt--;
278
279 vq->vq_desc_head_idx = vq->vq_split.ring.desc[i].next;
280
281 vq_update_avail_ring(vq, head);
282 vq_update_avail_idx(vq);
283
284 PMD_INIT_LOG(DEBUG, "vq->vq_queue_index = %d", vq->vq_queue_index);
285
286 virtqueue_notify(vq);
287
288 rte_rmb();
289 while (VIRTQUEUE_NUSED(vq) == 0) {
290 rte_rmb();
291 usleep(100);
292 }
293
294 while (VIRTQUEUE_NUSED(vq)) {
295 uint32_t idx, desc_idx, used_idx;
296 struct vring_used_elem *uep;
297
298 used_idx = (uint32_t)(vq->vq_used_cons_idx
299 & (vq->vq_nentries - 1));
300 uep = &vq->vq_split.ring.used->ring[used_idx];
301 idx = (uint32_t) uep->id;
302 desc_idx = idx;
303
304 while (vq->vq_split.ring.desc[desc_idx].flags &
305 VRING_DESC_F_NEXT) {
306 desc_idx = vq->vq_split.ring.desc[desc_idx].next;
307 vq->vq_free_cnt++;
308 }
309
310 vq->vq_split.ring.desc[desc_idx].next = vq->vq_desc_head_idx;
311 vq->vq_desc_head_idx = idx;
312
313 vq->vq_used_cons_idx++;
314 vq->vq_free_cnt++;
315 }
316
317 PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\nvq->vq_desc_head_idx=%d",
318 vq->vq_free_cnt, vq->vq_desc_head_idx);
319
320 result = cvq->virtio_net_hdr_mz->addr;
321 return result;
322 }
323
324 static int
325 virtio_send_command(struct virtnet_ctl *cvq, struct virtio_pmd_ctrl *ctrl,
326 int *dlen, int pkt_num)
327 {
328 virtio_net_ctrl_ack status = ~0;
329 struct virtio_pmd_ctrl *result;
330 struct virtqueue *vq;
331
332 ctrl->status = status;
333
334 if (!cvq || !cvq->vq) {
335 PMD_INIT_LOG(ERR, "Control queue is not supported.");
336 return -1;
337 }
338
339 rte_spinlock_lock(&cvq->lock);
340 vq = cvq->vq;
341
342 PMD_INIT_LOG(DEBUG, "vq->vq_desc_head_idx = %d, status = %d, "
343 "vq->hw->cvq = %p vq = %p",
344 vq->vq_desc_head_idx, status, vq->hw->cvq, vq);
345
346 if (vq->vq_free_cnt < pkt_num + 2 || pkt_num < 1) {
347 rte_spinlock_unlock(&cvq->lock);
348 return -1;
349 }
350
351 memcpy(cvq->virtio_net_hdr_mz->addr, ctrl,
352 sizeof(struct virtio_pmd_ctrl));
353
354 if (vtpci_packed_queue(vq->hw))
355 result = virtio_send_command_packed(cvq, ctrl, dlen, pkt_num);
356 else
357 result = virtio_send_command_split(cvq, ctrl, dlen, pkt_num);
358
359 rte_spinlock_unlock(&cvq->lock);
360 return result->status;
361 }
362
363 static int
364 virtio_set_multiple_queues(struct rte_eth_dev *dev, uint16_t nb_queues)
365 {
366 struct virtio_hw *hw = dev->data->dev_private;
367 struct virtio_pmd_ctrl ctrl;
368 int dlen[1];
369 int ret;
370
371 ctrl.hdr.class = VIRTIO_NET_CTRL_MQ;
372 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET;
373 memcpy(ctrl.data, &nb_queues, sizeof(uint16_t));
374
375 dlen[0] = sizeof(uint16_t);
376
377 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
378 if (ret) {
379 PMD_INIT_LOG(ERR, "Multiqueue configured but send command "
380 "failed, this is too late now...");
381 return -EINVAL;
382 }
383
384 return 0;
385 }
386
387 static void
388 virtio_dev_queue_release(void *queue __rte_unused)
389 {
390 /* do nothing */
391 }
392
393 static uint16_t
394 virtio_get_nr_vq(struct virtio_hw *hw)
395 {
396 uint16_t nr_vq = hw->max_queue_pairs * 2;
397
398 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ))
399 nr_vq += 1;
400
401 return nr_vq;
402 }
403
404 static void
405 virtio_init_vring(struct virtqueue *vq)
406 {
407 int size = vq->vq_nentries;
408 uint8_t *ring_mem = vq->vq_ring_virt_mem;
409
410 PMD_INIT_FUNC_TRACE();
411
412 memset(ring_mem, 0, vq->vq_ring_size);
413
414 vq->vq_used_cons_idx = 0;
415 vq->vq_desc_head_idx = 0;
416 vq->vq_avail_idx = 0;
417 vq->vq_desc_tail_idx = (uint16_t)(vq->vq_nentries - 1);
418 vq->vq_free_cnt = vq->vq_nentries;
419 memset(vq->vq_descx, 0, sizeof(struct vq_desc_extra) * vq->vq_nentries);
420 if (vtpci_packed_queue(vq->hw)) {
421 vring_init_packed(&vq->vq_packed.ring, ring_mem,
422 VIRTIO_PCI_VRING_ALIGN, size);
423 vring_desc_init_packed(vq, size);
424 } else {
425 struct vring *vr = &vq->vq_split.ring;
426
427 vring_init_split(vr, ring_mem, VIRTIO_PCI_VRING_ALIGN, size);
428 vring_desc_init_split(vr->desc, size);
429 }
430 /*
431 * Disable device(host) interrupting guest
432 */
433 virtqueue_disable_intr(vq);
434 }
435
436 static int
437 virtio_init_queue(struct rte_eth_dev *dev, uint16_t vtpci_queue_idx)
438 {
439 char vq_name[VIRTQUEUE_MAX_NAME_SZ];
440 char vq_hdr_name[VIRTQUEUE_MAX_NAME_SZ];
441 const struct rte_memzone *mz = NULL, *hdr_mz = NULL;
442 unsigned int vq_size, size;
443 struct virtio_hw *hw = dev->data->dev_private;
444 struct virtnet_rx *rxvq = NULL;
445 struct virtnet_tx *txvq = NULL;
446 struct virtnet_ctl *cvq = NULL;
447 struct virtqueue *vq;
448 size_t sz_hdr_mz = 0;
449 void *sw_ring = NULL;
450 int queue_type = virtio_get_queue_type(hw, vtpci_queue_idx);
451 int ret;
452 int numa_node = dev->device->numa_node;
453
454 PMD_INIT_LOG(INFO, "setting up queue: %u on NUMA node %d",
455 vtpci_queue_idx, numa_node);
456
457 /*
458 * Read the virtqueue size from the Queue Size field
459 * Always power of 2 and if 0 virtqueue does not exist
460 */
461 vq_size = VTPCI_OPS(hw)->get_queue_num(hw, vtpci_queue_idx);
462 PMD_INIT_LOG(DEBUG, "vq_size: %u", vq_size);
463 if (vq_size == 0) {
464 PMD_INIT_LOG(ERR, "virtqueue does not exist");
465 return -EINVAL;
466 }
467
468 if (!rte_is_power_of_2(vq_size)) {
469 PMD_INIT_LOG(ERR, "virtqueue size is not powerof 2");
470 return -EINVAL;
471 }
472
473 snprintf(vq_name, sizeof(vq_name), "port%d_vq%d",
474 dev->data->port_id, vtpci_queue_idx);
475
476 size = RTE_ALIGN_CEIL(sizeof(*vq) +
477 vq_size * sizeof(struct vq_desc_extra),
478 RTE_CACHE_LINE_SIZE);
479 if (queue_type == VTNET_TQ) {
480 /*
481 * For each xmit packet, allocate a virtio_net_hdr
482 * and indirect ring elements
483 */
484 sz_hdr_mz = vq_size * sizeof(struct virtio_tx_region);
485 } else if (queue_type == VTNET_CQ) {
486 /* Allocate a page for control vq command, data and status */
487 sz_hdr_mz = PAGE_SIZE;
488 }
489
490 vq = rte_zmalloc_socket(vq_name, size, RTE_CACHE_LINE_SIZE,
491 numa_node);
492 if (vq == NULL) {
493 PMD_INIT_LOG(ERR, "can not allocate vq");
494 return -ENOMEM;
495 }
496 hw->vqs[vtpci_queue_idx] = vq;
497
498 vq->hw = hw;
499 vq->vq_queue_index = vtpci_queue_idx;
500 vq->vq_nentries = vq_size;
501 if (vtpci_packed_queue(hw)) {
502 vq->vq_packed.used_wrap_counter = 1;
503 vq->vq_packed.cached_flags = VRING_PACKED_DESC_F_AVAIL;
504 vq->vq_packed.event_flags_shadow = 0;
505 if (queue_type == VTNET_RQ)
506 vq->vq_packed.cached_flags |= VRING_DESC_F_WRITE;
507 }
508
509 /*
510 * Reserve a memzone for vring elements
511 */
512 size = vring_size(hw, vq_size, VIRTIO_PCI_VRING_ALIGN);
513 vq->vq_ring_size = RTE_ALIGN_CEIL(size, VIRTIO_PCI_VRING_ALIGN);
514 PMD_INIT_LOG(DEBUG, "vring_size: %d, rounded_vring_size: %d",
515 size, vq->vq_ring_size);
516
517 mz = rte_memzone_reserve_aligned(vq_name, vq->vq_ring_size,
518 numa_node, RTE_MEMZONE_IOVA_CONTIG,
519 VIRTIO_PCI_VRING_ALIGN);
520 if (mz == NULL) {
521 if (rte_errno == EEXIST)
522 mz = rte_memzone_lookup(vq_name);
523 if (mz == NULL) {
524 ret = -ENOMEM;
525 goto fail_q_alloc;
526 }
527 }
528
529 memset(mz->addr, 0, mz->len);
530
531 vq->vq_ring_mem = mz->iova;
532 vq->vq_ring_virt_mem = mz->addr;
533 PMD_INIT_LOG(DEBUG, "vq->vq_ring_mem: 0x%" PRIx64,
534 (uint64_t)mz->iova);
535 PMD_INIT_LOG(DEBUG, "vq->vq_ring_virt_mem: 0x%" PRIx64,
536 (uint64_t)(uintptr_t)mz->addr);
537
538 virtio_init_vring(vq);
539
540 if (sz_hdr_mz) {
541 snprintf(vq_hdr_name, sizeof(vq_hdr_name), "port%d_vq%d_hdr",
542 dev->data->port_id, vtpci_queue_idx);
543 hdr_mz = rte_memzone_reserve_aligned(vq_hdr_name, sz_hdr_mz,
544 numa_node, RTE_MEMZONE_IOVA_CONTIG,
545 RTE_CACHE_LINE_SIZE);
546 if (hdr_mz == NULL) {
547 if (rte_errno == EEXIST)
548 hdr_mz = rte_memzone_lookup(vq_hdr_name);
549 if (hdr_mz == NULL) {
550 ret = -ENOMEM;
551 goto fail_q_alloc;
552 }
553 }
554 }
555
556 if (queue_type == VTNET_RQ) {
557 size_t sz_sw = (RTE_PMD_VIRTIO_RX_MAX_BURST + vq_size) *
558 sizeof(vq->sw_ring[0]);
559
560 sw_ring = rte_zmalloc_socket("sw_ring", sz_sw,
561 RTE_CACHE_LINE_SIZE, numa_node);
562 if (!sw_ring) {
563 PMD_INIT_LOG(ERR, "can not allocate RX soft ring");
564 ret = -ENOMEM;
565 goto fail_q_alloc;
566 }
567
568 vq->sw_ring = sw_ring;
569 rxvq = &vq->rxq;
570 rxvq->vq = vq;
571 rxvq->port_id = dev->data->port_id;
572 rxvq->mz = mz;
573 } else if (queue_type == VTNET_TQ) {
574 txvq = &vq->txq;
575 txvq->vq = vq;
576 txvq->port_id = dev->data->port_id;
577 txvq->mz = mz;
578 txvq->virtio_net_hdr_mz = hdr_mz;
579 txvq->virtio_net_hdr_mem = hdr_mz->iova;
580 } else if (queue_type == VTNET_CQ) {
581 cvq = &vq->cq;
582 cvq->vq = vq;
583 cvq->mz = mz;
584 cvq->virtio_net_hdr_mz = hdr_mz;
585 cvq->virtio_net_hdr_mem = hdr_mz->iova;
586 memset(cvq->virtio_net_hdr_mz->addr, 0, PAGE_SIZE);
587
588 hw->cvq = cvq;
589 }
590
591 /* For virtio_user case (that is when hw->dev is NULL), we use
592 * virtual address. And we need properly set _offset_, please see
593 * VIRTIO_MBUF_DATA_DMA_ADDR in virtqueue.h for more information.
594 */
595 if (!hw->virtio_user_dev)
596 vq->offset = offsetof(struct rte_mbuf, buf_iova);
597 else {
598 vq->vq_ring_mem = (uintptr_t)mz->addr;
599 vq->offset = offsetof(struct rte_mbuf, buf_addr);
600 if (queue_type == VTNET_TQ)
601 txvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr;
602 else if (queue_type == VTNET_CQ)
603 cvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr;
604 }
605
606 if (queue_type == VTNET_TQ) {
607 struct virtio_tx_region *txr;
608 unsigned int i;
609
610 txr = hdr_mz->addr;
611 memset(txr, 0, vq_size * sizeof(*txr));
612 for (i = 0; i < vq_size; i++) {
613 struct vring_desc *start_dp = txr[i].tx_indir;
614
615 /* first indirect descriptor is always the tx header */
616 if (!vtpci_packed_queue(hw)) {
617 vring_desc_init_split(start_dp,
618 RTE_DIM(txr[i].tx_indir));
619 start_dp->addr = txvq->virtio_net_hdr_mem
620 + i * sizeof(*txr)
621 + offsetof(struct virtio_tx_region,
622 tx_hdr);
623 start_dp->len = hw->vtnet_hdr_size;
624 start_dp->flags = VRING_DESC_F_NEXT;
625 }
626 }
627 }
628
629 if (VTPCI_OPS(hw)->setup_queue(hw, vq) < 0) {
630 PMD_INIT_LOG(ERR, "setup_queue failed");
631 return -EINVAL;
632 }
633
634 return 0;
635
636 fail_q_alloc:
637 rte_free(sw_ring);
638 rte_memzone_free(hdr_mz);
639 rte_memzone_free(mz);
640 rte_free(vq);
641
642 return ret;
643 }
644
645 static void
646 virtio_free_queues(struct virtio_hw *hw)
647 {
648 uint16_t nr_vq = virtio_get_nr_vq(hw);
649 struct virtqueue *vq;
650 int queue_type;
651 uint16_t i;
652
653 if (hw->vqs == NULL)
654 return;
655
656 for (i = 0; i < nr_vq; i++) {
657 vq = hw->vqs[i];
658 if (!vq)
659 continue;
660
661 queue_type = virtio_get_queue_type(hw, i);
662 if (queue_type == VTNET_RQ) {
663 rte_free(vq->sw_ring);
664 rte_memzone_free(vq->rxq.mz);
665 } else if (queue_type == VTNET_TQ) {
666 rte_memzone_free(vq->txq.mz);
667 rte_memzone_free(vq->txq.virtio_net_hdr_mz);
668 } else {
669 rte_memzone_free(vq->cq.mz);
670 rte_memzone_free(vq->cq.virtio_net_hdr_mz);
671 }
672
673 rte_free(vq);
674 hw->vqs[i] = NULL;
675 }
676
677 rte_free(hw->vqs);
678 hw->vqs = NULL;
679 }
680
681 static int
682 virtio_alloc_queues(struct rte_eth_dev *dev)
683 {
684 struct virtio_hw *hw = dev->data->dev_private;
685 uint16_t nr_vq = virtio_get_nr_vq(hw);
686 uint16_t i;
687 int ret;
688
689 hw->vqs = rte_zmalloc(NULL, sizeof(struct virtqueue *) * nr_vq, 0);
690 if (!hw->vqs) {
691 PMD_INIT_LOG(ERR, "failed to allocate vqs");
692 return -ENOMEM;
693 }
694
695 for (i = 0; i < nr_vq; i++) {
696 ret = virtio_init_queue(dev, i);
697 if (ret < 0) {
698 virtio_free_queues(hw);
699 return ret;
700 }
701 }
702
703 return 0;
704 }
705
706 static void virtio_queues_unbind_intr(struct rte_eth_dev *dev);
707
708 static void
709 virtio_dev_close(struct rte_eth_dev *dev)
710 {
711 struct virtio_hw *hw = dev->data->dev_private;
712 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf;
713
714 PMD_INIT_LOG(DEBUG, "virtio_dev_close");
715
716 if (!hw->opened)
717 return;
718 hw->opened = false;
719
720 /* reset the NIC */
721 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
722 VTPCI_OPS(hw)->set_config_irq(hw, VIRTIO_MSI_NO_VECTOR);
723 if (intr_conf->rxq)
724 virtio_queues_unbind_intr(dev);
725
726 if (intr_conf->lsc || intr_conf->rxq) {
727 virtio_intr_disable(dev);
728 rte_intr_efd_disable(dev->intr_handle);
729 rte_free(dev->intr_handle->intr_vec);
730 dev->intr_handle->intr_vec = NULL;
731 }
732
733 vtpci_reset(hw);
734 virtio_dev_free_mbufs(dev);
735 virtio_free_queues(hw);
736 }
737
738 static void
739 virtio_dev_promiscuous_enable(struct rte_eth_dev *dev)
740 {
741 struct virtio_hw *hw = dev->data->dev_private;
742 struct virtio_pmd_ctrl ctrl;
743 int dlen[1];
744 int ret;
745
746 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
747 PMD_INIT_LOG(INFO, "host does not support rx control");
748 return;
749 }
750
751 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
752 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
753 ctrl.data[0] = 1;
754 dlen[0] = 1;
755
756 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
757 if (ret)
758 PMD_INIT_LOG(ERR, "Failed to enable promisc");
759 }
760
761 static void
762 virtio_dev_promiscuous_disable(struct rte_eth_dev *dev)
763 {
764 struct virtio_hw *hw = dev->data->dev_private;
765 struct virtio_pmd_ctrl ctrl;
766 int dlen[1];
767 int ret;
768
769 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
770 PMD_INIT_LOG(INFO, "host does not support rx control");
771 return;
772 }
773
774 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
775 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
776 ctrl.data[0] = 0;
777 dlen[0] = 1;
778
779 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
780 if (ret)
781 PMD_INIT_LOG(ERR, "Failed to disable promisc");
782 }
783
784 static void
785 virtio_dev_allmulticast_enable(struct rte_eth_dev *dev)
786 {
787 struct virtio_hw *hw = dev->data->dev_private;
788 struct virtio_pmd_ctrl ctrl;
789 int dlen[1];
790 int ret;
791
792 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
793 PMD_INIT_LOG(INFO, "host does not support rx control");
794 return;
795 }
796
797 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
798 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
799 ctrl.data[0] = 1;
800 dlen[0] = 1;
801
802 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
803 if (ret)
804 PMD_INIT_LOG(ERR, "Failed to enable allmulticast");
805 }
806
807 static void
808 virtio_dev_allmulticast_disable(struct rte_eth_dev *dev)
809 {
810 struct virtio_hw *hw = dev->data->dev_private;
811 struct virtio_pmd_ctrl ctrl;
812 int dlen[1];
813 int ret;
814
815 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
816 PMD_INIT_LOG(INFO, "host does not support rx control");
817 return;
818 }
819
820 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
821 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
822 ctrl.data[0] = 0;
823 dlen[0] = 1;
824
825 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
826 if (ret)
827 PMD_INIT_LOG(ERR, "Failed to disable allmulticast");
828 }
829
830 #define VLAN_TAG_LEN 4 /* 802.3ac tag (not DMA'd) */
831 static int
832 virtio_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
833 {
834 struct virtio_hw *hw = dev->data->dev_private;
835 uint32_t ether_hdr_len = ETHER_HDR_LEN + VLAN_TAG_LEN +
836 hw->vtnet_hdr_size;
837 uint32_t frame_size = mtu + ether_hdr_len;
838 uint32_t max_frame_size = hw->max_mtu + ether_hdr_len;
839
840 max_frame_size = RTE_MIN(max_frame_size, VIRTIO_MAX_RX_PKTLEN);
841
842 if (mtu < ETHER_MIN_MTU || frame_size > max_frame_size) {
843 PMD_INIT_LOG(ERR, "MTU should be between %d and %d",
844 ETHER_MIN_MTU, max_frame_size - ether_hdr_len);
845 return -EINVAL;
846 }
847 return 0;
848 }
849
850 static int
851 virtio_dev_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id)
852 {
853 struct virtio_hw *hw = dev->data->dev_private;
854 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id];
855 struct virtqueue *vq = rxvq->vq;
856
857 virtqueue_enable_intr(vq);
858 virtio_mb(hw->weak_barriers);
859 return 0;
860 }
861
862 static int
863 virtio_dev_rx_queue_intr_disable(struct rte_eth_dev *dev, uint16_t queue_id)
864 {
865 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id];
866 struct virtqueue *vq = rxvq->vq;
867
868 virtqueue_disable_intr(vq);
869 return 0;
870 }
871
872 /*
873 * dev_ops for virtio, bare necessities for basic operation
874 */
875 static const struct eth_dev_ops virtio_eth_dev_ops = {
876 .dev_configure = virtio_dev_configure,
877 .dev_start = virtio_dev_start,
878 .dev_stop = virtio_dev_stop,
879 .dev_close = virtio_dev_close,
880 .promiscuous_enable = virtio_dev_promiscuous_enable,
881 .promiscuous_disable = virtio_dev_promiscuous_disable,
882 .allmulticast_enable = virtio_dev_allmulticast_enable,
883 .allmulticast_disable = virtio_dev_allmulticast_disable,
884 .mtu_set = virtio_mtu_set,
885 .dev_infos_get = virtio_dev_info_get,
886 .stats_get = virtio_dev_stats_get,
887 .xstats_get = virtio_dev_xstats_get,
888 .xstats_get_names = virtio_dev_xstats_get_names,
889 .stats_reset = virtio_dev_stats_reset,
890 .xstats_reset = virtio_dev_stats_reset,
891 .link_update = virtio_dev_link_update,
892 .vlan_offload_set = virtio_dev_vlan_offload_set,
893 .rx_queue_setup = virtio_dev_rx_queue_setup,
894 .rx_queue_intr_enable = virtio_dev_rx_queue_intr_enable,
895 .rx_queue_intr_disable = virtio_dev_rx_queue_intr_disable,
896 .rx_queue_release = virtio_dev_queue_release,
897 .rx_descriptor_done = virtio_dev_rx_queue_done,
898 .tx_queue_setup = virtio_dev_tx_queue_setup,
899 .tx_queue_release = virtio_dev_queue_release,
900 /* collect stats per queue */
901 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set,
902 .vlan_filter_set = virtio_vlan_filter_set,
903 .mac_addr_add = virtio_mac_addr_add,
904 .mac_addr_remove = virtio_mac_addr_remove,
905 .mac_addr_set = virtio_mac_addr_set,
906 };
907
908 /*
909 * dev_ops for virtio-user in secondary processes, as we just have
910 * some limited supports currently.
911 */
912 const struct eth_dev_ops virtio_user_secondary_eth_dev_ops = {
913 .dev_infos_get = virtio_dev_info_get,
914 .stats_get = virtio_dev_stats_get,
915 .xstats_get = virtio_dev_xstats_get,
916 .xstats_get_names = virtio_dev_xstats_get_names,
917 .stats_reset = virtio_dev_stats_reset,
918 .xstats_reset = virtio_dev_stats_reset,
919 /* collect stats per queue */
920 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set,
921 };
922
923 static void
924 virtio_update_stats(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
925 {
926 unsigned i;
927
928 for (i = 0; i < dev->data->nb_tx_queues; i++) {
929 const struct virtnet_tx *txvq = dev->data->tx_queues[i];
930 if (txvq == NULL)
931 continue;
932
933 stats->opackets += txvq->stats.packets;
934 stats->obytes += txvq->stats.bytes;
935 stats->oerrors += txvq->stats.errors;
936
937 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
938 stats->q_opackets[i] = txvq->stats.packets;
939 stats->q_obytes[i] = txvq->stats.bytes;
940 }
941 }
942
943 for (i = 0; i < dev->data->nb_rx_queues; i++) {
944 const struct virtnet_rx *rxvq = dev->data->rx_queues[i];
945 if (rxvq == NULL)
946 continue;
947
948 stats->ipackets += rxvq->stats.packets;
949 stats->ibytes += rxvq->stats.bytes;
950 stats->ierrors += rxvq->stats.errors;
951
952 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
953 stats->q_ipackets[i] = rxvq->stats.packets;
954 stats->q_ibytes[i] = rxvq->stats.bytes;
955 }
956 }
957
958 stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed;
959 }
960
961 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev,
962 struct rte_eth_xstat_name *xstats_names,
963 __rte_unused unsigned limit)
964 {
965 unsigned i;
966 unsigned count = 0;
967 unsigned t;
968
969 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS +
970 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS;
971
972 if (xstats_names != NULL) {
973 /* Note: limit checked in rte_eth_xstats_names() */
974
975 for (i = 0; i < dev->data->nb_rx_queues; i++) {
976 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
977 if (rxvq == NULL)
978 continue;
979 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) {
980 snprintf(xstats_names[count].name,
981 sizeof(xstats_names[count].name),
982 "rx_q%u_%s", i,
983 rte_virtio_rxq_stat_strings[t].name);
984 count++;
985 }
986 }
987
988 for (i = 0; i < dev->data->nb_tx_queues; i++) {
989 struct virtnet_tx *txvq = dev->data->tx_queues[i];
990 if (txvq == NULL)
991 continue;
992 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) {
993 snprintf(xstats_names[count].name,
994 sizeof(xstats_names[count].name),
995 "tx_q%u_%s", i,
996 rte_virtio_txq_stat_strings[t].name);
997 count++;
998 }
999 }
1000 return count;
1001 }
1002 return nstats;
1003 }
1004
1005 static int
1006 virtio_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats,
1007 unsigned n)
1008 {
1009 unsigned i;
1010 unsigned count = 0;
1011
1012 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS +
1013 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS;
1014
1015 if (n < nstats)
1016 return nstats;
1017
1018 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1019 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
1020
1021 if (rxvq == NULL)
1022 continue;
1023
1024 unsigned t;
1025
1026 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) {
1027 xstats[count].value = *(uint64_t *)(((char *)rxvq) +
1028 rte_virtio_rxq_stat_strings[t].offset);
1029 xstats[count].id = count;
1030 count++;
1031 }
1032 }
1033
1034 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1035 struct virtnet_tx *txvq = dev->data->tx_queues[i];
1036
1037 if (txvq == NULL)
1038 continue;
1039
1040 unsigned t;
1041
1042 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) {
1043 xstats[count].value = *(uint64_t *)(((char *)txvq) +
1044 rte_virtio_txq_stat_strings[t].offset);
1045 xstats[count].id = count;
1046 count++;
1047 }
1048 }
1049
1050 return count;
1051 }
1052
1053 static int
1054 virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
1055 {
1056 virtio_update_stats(dev, stats);
1057
1058 return 0;
1059 }
1060
1061 static void
1062 virtio_dev_stats_reset(struct rte_eth_dev *dev)
1063 {
1064 unsigned int i;
1065
1066 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1067 struct virtnet_tx *txvq = dev->data->tx_queues[i];
1068 if (txvq == NULL)
1069 continue;
1070
1071 txvq->stats.packets = 0;
1072 txvq->stats.bytes = 0;
1073 txvq->stats.errors = 0;
1074 txvq->stats.multicast = 0;
1075 txvq->stats.broadcast = 0;
1076 memset(txvq->stats.size_bins, 0,
1077 sizeof(txvq->stats.size_bins[0]) * 8);
1078 }
1079
1080 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1081 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
1082 if (rxvq == NULL)
1083 continue;
1084
1085 rxvq->stats.packets = 0;
1086 rxvq->stats.bytes = 0;
1087 rxvq->stats.errors = 0;
1088 rxvq->stats.multicast = 0;
1089 rxvq->stats.broadcast = 0;
1090 memset(rxvq->stats.size_bins, 0,
1091 sizeof(rxvq->stats.size_bins[0]) * 8);
1092 }
1093 }
1094
1095 static void
1096 virtio_set_hwaddr(struct virtio_hw *hw)
1097 {
1098 vtpci_write_dev_config(hw,
1099 offsetof(struct virtio_net_config, mac),
1100 &hw->mac_addr, ETHER_ADDR_LEN);
1101 }
1102
1103 static void
1104 virtio_get_hwaddr(struct virtio_hw *hw)
1105 {
1106 if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) {
1107 vtpci_read_dev_config(hw,
1108 offsetof(struct virtio_net_config, mac),
1109 &hw->mac_addr, ETHER_ADDR_LEN);
1110 } else {
1111 eth_random_addr(&hw->mac_addr[0]);
1112 virtio_set_hwaddr(hw);
1113 }
1114 }
1115
1116 static int
1117 virtio_mac_table_set(struct virtio_hw *hw,
1118 const struct virtio_net_ctrl_mac *uc,
1119 const struct virtio_net_ctrl_mac *mc)
1120 {
1121 struct virtio_pmd_ctrl ctrl;
1122 int err, len[2];
1123
1124 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
1125 PMD_DRV_LOG(INFO, "host does not support mac table");
1126 return -1;
1127 }
1128
1129 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
1130 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET;
1131
1132 len[0] = uc->entries * ETHER_ADDR_LEN + sizeof(uc->entries);
1133 memcpy(ctrl.data, uc, len[0]);
1134
1135 len[1] = mc->entries * ETHER_ADDR_LEN + sizeof(mc->entries);
1136 memcpy(ctrl.data + len[0], mc, len[1]);
1137
1138 err = virtio_send_command(hw->cvq, &ctrl, len, 2);
1139 if (err != 0)
1140 PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err);
1141 return err;
1142 }
1143
1144 static int
1145 virtio_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac_addr,
1146 uint32_t index, uint32_t vmdq __rte_unused)
1147 {
1148 struct virtio_hw *hw = dev->data->dev_private;
1149 const struct ether_addr *addrs = dev->data->mac_addrs;
1150 unsigned int i;
1151 struct virtio_net_ctrl_mac *uc, *mc;
1152
1153 if (index >= VIRTIO_MAX_MAC_ADDRS) {
1154 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
1155 return -EINVAL;
1156 }
1157
1158 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
1159 uc->entries = 0;
1160 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
1161 mc->entries = 0;
1162
1163 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
1164 const struct ether_addr *addr
1165 = (i == index) ? mac_addr : addrs + i;
1166 struct virtio_net_ctrl_mac *tbl
1167 = is_multicast_ether_addr(addr) ? mc : uc;
1168
1169 memcpy(&tbl->macs[tbl->entries++], addr, ETHER_ADDR_LEN);
1170 }
1171
1172 return virtio_mac_table_set(hw, uc, mc);
1173 }
1174
1175 static void
1176 virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
1177 {
1178 struct virtio_hw *hw = dev->data->dev_private;
1179 struct ether_addr *addrs = dev->data->mac_addrs;
1180 struct virtio_net_ctrl_mac *uc, *mc;
1181 unsigned int i;
1182
1183 if (index >= VIRTIO_MAX_MAC_ADDRS) {
1184 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
1185 return;
1186 }
1187
1188 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
1189 uc->entries = 0;
1190 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
1191 mc->entries = 0;
1192
1193 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
1194 struct virtio_net_ctrl_mac *tbl;
1195
1196 if (i == index || is_zero_ether_addr(addrs + i))
1197 continue;
1198
1199 tbl = is_multicast_ether_addr(addrs + i) ? mc : uc;
1200 memcpy(&tbl->macs[tbl->entries++], addrs + i, ETHER_ADDR_LEN);
1201 }
1202
1203 virtio_mac_table_set(hw, uc, mc);
1204 }
1205
1206 static int
1207 virtio_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr)
1208 {
1209 struct virtio_hw *hw = dev->data->dev_private;
1210
1211 memcpy(hw->mac_addr, mac_addr, ETHER_ADDR_LEN);
1212
1213 /* Use atomic update if available */
1214 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
1215 struct virtio_pmd_ctrl ctrl;
1216 int len = ETHER_ADDR_LEN;
1217
1218 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
1219 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET;
1220
1221 memcpy(ctrl.data, mac_addr, ETHER_ADDR_LEN);
1222 return virtio_send_command(hw->cvq, &ctrl, &len, 1);
1223 }
1224
1225 if (!vtpci_with_feature(hw, VIRTIO_NET_F_MAC))
1226 return -ENOTSUP;
1227
1228 virtio_set_hwaddr(hw);
1229 return 0;
1230 }
1231
1232 static int
1233 virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
1234 {
1235 struct virtio_hw *hw = dev->data->dev_private;
1236 struct virtio_pmd_ctrl ctrl;
1237 int len;
1238
1239 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN))
1240 return -ENOTSUP;
1241
1242 ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN;
1243 ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL;
1244 memcpy(ctrl.data, &vlan_id, sizeof(vlan_id));
1245 len = sizeof(vlan_id);
1246
1247 return virtio_send_command(hw->cvq, &ctrl, &len, 1);
1248 }
1249
1250 static int
1251 virtio_intr_enable(struct rte_eth_dev *dev)
1252 {
1253 struct virtio_hw *hw = dev->data->dev_private;
1254
1255 if (rte_intr_enable(dev->intr_handle) < 0)
1256 return -1;
1257
1258 if (!hw->virtio_user_dev)
1259 hw->use_msix = vtpci_msix_detect(RTE_ETH_DEV_TO_PCI(dev));
1260
1261 return 0;
1262 }
1263
1264 static int
1265 virtio_intr_disable(struct rte_eth_dev *dev)
1266 {
1267 struct virtio_hw *hw = dev->data->dev_private;
1268
1269 if (rte_intr_disable(dev->intr_handle) < 0)
1270 return -1;
1271
1272 if (!hw->virtio_user_dev)
1273 hw->use_msix = vtpci_msix_detect(RTE_ETH_DEV_TO_PCI(dev));
1274
1275 return 0;
1276 }
1277
1278 static int
1279 virtio_negotiate_features(struct virtio_hw *hw, uint64_t req_features)
1280 {
1281 uint64_t host_features;
1282
1283 /* Prepare guest_features: feature that driver wants to support */
1284 PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %" PRIx64,
1285 req_features);
1286
1287 /* Read device(host) feature bits */
1288 host_features = VTPCI_OPS(hw)->get_features(hw);
1289 PMD_INIT_LOG(DEBUG, "host_features before negotiate = %" PRIx64,
1290 host_features);
1291
1292 /* If supported, ensure MTU value is valid before acknowledging it. */
1293 if (host_features & req_features & (1ULL << VIRTIO_NET_F_MTU)) {
1294 struct virtio_net_config config;
1295
1296 vtpci_read_dev_config(hw,
1297 offsetof(struct virtio_net_config, mtu),
1298 &config.mtu, sizeof(config.mtu));
1299
1300 if (config.mtu < ETHER_MIN_MTU)
1301 req_features &= ~(1ULL << VIRTIO_NET_F_MTU);
1302 }
1303
1304 /*
1305 * Negotiate features: Subset of device feature bits are written back
1306 * guest feature bits.
1307 */
1308 hw->guest_features = req_features;
1309 hw->guest_features = vtpci_negotiate_features(hw, host_features);
1310 PMD_INIT_LOG(DEBUG, "features after negotiate = %" PRIx64,
1311 hw->guest_features);
1312
1313 if (hw->modern) {
1314 if (!vtpci_with_feature(hw, VIRTIO_F_VERSION_1)) {
1315 PMD_INIT_LOG(ERR,
1316 "VIRTIO_F_VERSION_1 features is not enabled.");
1317 return -1;
1318 }
1319 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_FEATURES_OK);
1320 if (!(vtpci_get_status(hw) & VIRTIO_CONFIG_STATUS_FEATURES_OK)) {
1321 PMD_INIT_LOG(ERR,
1322 "failed to set FEATURES_OK status!");
1323 return -1;
1324 }
1325 }
1326
1327 hw->req_guest_features = req_features;
1328
1329 return 0;
1330 }
1331
1332 int
1333 virtio_dev_pause(struct rte_eth_dev *dev)
1334 {
1335 struct virtio_hw *hw = dev->data->dev_private;
1336
1337 rte_spinlock_lock(&hw->state_lock);
1338
1339 if (hw->started == 0) {
1340 /* Device is just stopped. */
1341 rte_spinlock_unlock(&hw->state_lock);
1342 return -1;
1343 }
1344 hw->started = 0;
1345 /*
1346 * Prevent the worker threads from touching queues to avoid contention,
1347 * 1 ms should be enough for the ongoing Tx function to finish.
1348 */
1349 rte_delay_ms(1);
1350 return 0;
1351 }
1352
1353 /*
1354 * Recover hw state to let the worker threads continue.
1355 */
1356 void
1357 virtio_dev_resume(struct rte_eth_dev *dev)
1358 {
1359 struct virtio_hw *hw = dev->data->dev_private;
1360
1361 hw->started = 1;
1362 rte_spinlock_unlock(&hw->state_lock);
1363 }
1364
1365 /*
1366 * Should be called only after device is paused.
1367 */
1368 int
1369 virtio_inject_pkts(struct rte_eth_dev *dev, struct rte_mbuf **tx_pkts,
1370 int nb_pkts)
1371 {
1372 struct virtio_hw *hw = dev->data->dev_private;
1373 struct virtnet_tx *txvq = dev->data->tx_queues[0];
1374 int ret;
1375
1376 hw->inject_pkts = tx_pkts;
1377 ret = dev->tx_pkt_burst(txvq, tx_pkts, nb_pkts);
1378 hw->inject_pkts = NULL;
1379
1380 return ret;
1381 }
1382
1383 static void
1384 virtio_notify_peers(struct rte_eth_dev *dev)
1385 {
1386 struct virtio_hw *hw = dev->data->dev_private;
1387 struct virtnet_rx *rxvq;
1388 struct rte_mbuf *rarp_mbuf;
1389
1390 if (!dev->data->rx_queues)
1391 return;
1392
1393 rxvq = dev->data->rx_queues[0];
1394 if (!rxvq)
1395 return;
1396
1397 rarp_mbuf = rte_net_make_rarp_packet(rxvq->mpool,
1398 (struct ether_addr *)hw->mac_addr);
1399 if (rarp_mbuf == NULL) {
1400 PMD_DRV_LOG(ERR, "failed to make RARP packet.");
1401 return;
1402 }
1403
1404 /* If virtio port just stopped, no need to send RARP */
1405 if (virtio_dev_pause(dev) < 0) {
1406 rte_pktmbuf_free(rarp_mbuf);
1407 return;
1408 }
1409
1410 virtio_inject_pkts(dev, &rarp_mbuf, 1);
1411 virtio_dev_resume(dev);
1412 }
1413
1414 static void
1415 virtio_ack_link_announce(struct rte_eth_dev *dev)
1416 {
1417 struct virtio_hw *hw = dev->data->dev_private;
1418 struct virtio_pmd_ctrl ctrl;
1419
1420 ctrl.hdr.class = VIRTIO_NET_CTRL_ANNOUNCE;
1421 ctrl.hdr.cmd = VIRTIO_NET_CTRL_ANNOUNCE_ACK;
1422
1423 virtio_send_command(hw->cvq, &ctrl, NULL, 0);
1424 }
1425
1426 /*
1427 * Process virtio config changed interrupt. Call the callback
1428 * if link state changed, generate gratuitous RARP packet if
1429 * the status indicates an ANNOUNCE.
1430 */
1431 void
1432 virtio_interrupt_handler(void *param)
1433 {
1434 struct rte_eth_dev *dev = param;
1435 struct virtio_hw *hw = dev->data->dev_private;
1436 uint8_t isr;
1437 uint16_t status;
1438
1439 /* Read interrupt status which clears interrupt */
1440 isr = vtpci_isr(hw);
1441 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr);
1442
1443 if (virtio_intr_enable(dev) < 0)
1444 PMD_DRV_LOG(ERR, "interrupt enable failed");
1445
1446 if (isr & VIRTIO_PCI_ISR_CONFIG) {
1447 if (virtio_dev_link_update(dev, 0) == 0)
1448 _rte_eth_dev_callback_process(dev,
1449 RTE_ETH_EVENT_INTR_LSC,
1450 NULL);
1451
1452 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1453 vtpci_read_dev_config(hw,
1454 offsetof(struct virtio_net_config, status),
1455 &status, sizeof(status));
1456 if (status & VIRTIO_NET_S_ANNOUNCE) {
1457 virtio_notify_peers(dev);
1458 if (hw->cvq)
1459 virtio_ack_link_announce(dev);
1460 }
1461 }
1462 }
1463 }
1464
1465 /* set rx and tx handlers according to what is supported */
1466 static void
1467 set_rxtx_funcs(struct rte_eth_dev *eth_dev)
1468 {
1469 struct virtio_hw *hw = eth_dev->data->dev_private;
1470
1471 if (vtpci_packed_queue(hw)) {
1472 PMD_INIT_LOG(INFO,
1473 "virtio: using packed ring %s Tx path on port %u",
1474 hw->use_inorder_tx ? "inorder" : "standard",
1475 eth_dev->data->port_id);
1476 eth_dev->tx_pkt_burst = virtio_xmit_pkts_packed;
1477 } else {
1478 if (hw->use_inorder_tx) {
1479 PMD_INIT_LOG(INFO, "virtio: using inorder Tx path on port %u",
1480 eth_dev->data->port_id);
1481 eth_dev->tx_pkt_burst = virtio_xmit_pkts_inorder;
1482 } else {
1483 PMD_INIT_LOG(INFO, "virtio: using standard Tx path on port %u",
1484 eth_dev->data->port_id);
1485 eth_dev->tx_pkt_burst = virtio_xmit_pkts;
1486 }
1487 }
1488
1489 if (vtpci_packed_queue(hw)) {
1490 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
1491 PMD_INIT_LOG(INFO,
1492 "virtio: using packed ring mergeable buffer Rx path on port %u",
1493 eth_dev->data->port_id);
1494 eth_dev->rx_pkt_burst =
1495 &virtio_recv_mergeable_pkts_packed;
1496 } else {
1497 PMD_INIT_LOG(INFO,
1498 "virtio: using packed ring standard Rx path on port %u",
1499 eth_dev->data->port_id);
1500 eth_dev->rx_pkt_burst = &virtio_recv_pkts_packed;
1501 }
1502 } else {
1503 if (hw->use_simple_rx) {
1504 PMD_INIT_LOG(INFO, "virtio: using simple Rx path on port %u",
1505 eth_dev->data->port_id);
1506 eth_dev->rx_pkt_burst = virtio_recv_pkts_vec;
1507 } else if (hw->use_inorder_rx) {
1508 PMD_INIT_LOG(INFO,
1509 "virtio: using inorder Rx path on port %u",
1510 eth_dev->data->port_id);
1511 eth_dev->rx_pkt_burst = &virtio_recv_pkts_inorder;
1512 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
1513 PMD_INIT_LOG(INFO,
1514 "virtio: using mergeable buffer Rx path on port %u",
1515 eth_dev->data->port_id);
1516 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts;
1517 } else {
1518 PMD_INIT_LOG(INFO, "virtio: using standard Rx path on port %u",
1519 eth_dev->data->port_id);
1520 eth_dev->rx_pkt_burst = &virtio_recv_pkts;
1521 }
1522 }
1523
1524 }
1525
1526 /* Only support 1:1 queue/interrupt mapping so far.
1527 * TODO: support n:1 queue/interrupt mapping when there are limited number of
1528 * interrupt vectors (<N+1).
1529 */
1530 static int
1531 virtio_queues_bind_intr(struct rte_eth_dev *dev)
1532 {
1533 uint32_t i;
1534 struct virtio_hw *hw = dev->data->dev_private;
1535
1536 PMD_INIT_LOG(INFO, "queue/interrupt binding");
1537 for (i = 0; i < dev->data->nb_rx_queues; ++i) {
1538 dev->intr_handle->intr_vec[i] = i + 1;
1539 if (VTPCI_OPS(hw)->set_queue_irq(hw, hw->vqs[i * 2], i + 1) ==
1540 VIRTIO_MSI_NO_VECTOR) {
1541 PMD_DRV_LOG(ERR, "failed to set queue vector");
1542 return -EBUSY;
1543 }
1544 }
1545
1546 return 0;
1547 }
1548
1549 static void
1550 virtio_queues_unbind_intr(struct rte_eth_dev *dev)
1551 {
1552 uint32_t i;
1553 struct virtio_hw *hw = dev->data->dev_private;
1554
1555 PMD_INIT_LOG(INFO, "queue/interrupt unbinding");
1556 for (i = 0; i < dev->data->nb_rx_queues; ++i)
1557 VTPCI_OPS(hw)->set_queue_irq(hw,
1558 hw->vqs[i * VTNET_CQ],
1559 VIRTIO_MSI_NO_VECTOR);
1560 }
1561
1562 static int
1563 virtio_configure_intr(struct rte_eth_dev *dev)
1564 {
1565 struct virtio_hw *hw = dev->data->dev_private;
1566
1567 if (!rte_intr_cap_multiple(dev->intr_handle)) {
1568 PMD_INIT_LOG(ERR, "Multiple intr vector not supported");
1569 return -ENOTSUP;
1570 }
1571
1572 if (rte_intr_efd_enable(dev->intr_handle, dev->data->nb_rx_queues)) {
1573 PMD_INIT_LOG(ERR, "Fail to create eventfd");
1574 return -1;
1575 }
1576
1577 if (!dev->intr_handle->intr_vec) {
1578 dev->intr_handle->intr_vec =
1579 rte_zmalloc("intr_vec",
1580 hw->max_queue_pairs * sizeof(int), 0);
1581 if (!dev->intr_handle->intr_vec) {
1582 PMD_INIT_LOG(ERR, "Failed to allocate %u rxq vectors",
1583 hw->max_queue_pairs);
1584 return -ENOMEM;
1585 }
1586 }
1587
1588 /* Re-register callback to update max_intr */
1589 rte_intr_callback_unregister(dev->intr_handle,
1590 virtio_interrupt_handler,
1591 dev);
1592 rte_intr_callback_register(dev->intr_handle,
1593 virtio_interrupt_handler,
1594 dev);
1595
1596 /* DO NOT try to remove this! This function will enable msix, or QEMU
1597 * will encounter SIGSEGV when DRIVER_OK is sent.
1598 * And for legacy devices, this should be done before queue/vec binding
1599 * to change the config size from 20 to 24, or VIRTIO_MSI_QUEUE_VECTOR
1600 * (22) will be ignored.
1601 */
1602 if (virtio_intr_enable(dev) < 0) {
1603 PMD_DRV_LOG(ERR, "interrupt enable failed");
1604 return -1;
1605 }
1606
1607 if (virtio_queues_bind_intr(dev) < 0) {
1608 PMD_INIT_LOG(ERR, "Failed to bind queue/interrupt");
1609 return -1;
1610 }
1611
1612 return 0;
1613 }
1614
1615 /* reset device and renegotiate features if needed */
1616 static int
1617 virtio_init_device(struct rte_eth_dev *eth_dev, uint64_t req_features)
1618 {
1619 struct virtio_hw *hw = eth_dev->data->dev_private;
1620 struct virtio_net_config *config;
1621 struct virtio_net_config local_config;
1622 struct rte_pci_device *pci_dev = NULL;
1623 int ret;
1624
1625 /* Reset the device although not necessary at startup */
1626 vtpci_reset(hw);
1627
1628 if (hw->vqs) {
1629 virtio_dev_free_mbufs(eth_dev);
1630 virtio_free_queues(hw);
1631 }
1632
1633 /* Tell the host we've noticed this device. */
1634 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_ACK);
1635
1636 /* Tell the host we've known how to drive the device. */
1637 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER);
1638 if (virtio_negotiate_features(hw, req_features) < 0)
1639 return -1;
1640
1641 hw->weak_barriers = !vtpci_with_feature(hw, VIRTIO_F_ORDER_PLATFORM);
1642
1643 if (!hw->virtio_user_dev) {
1644 pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
1645 rte_eth_copy_pci_info(eth_dev, pci_dev);
1646 }
1647
1648 /* If host does not support both status and MSI-X then disable LSC */
1649 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS) &&
1650 hw->use_msix != VIRTIO_MSIX_NONE)
1651 eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC;
1652 else
1653 eth_dev->data->dev_flags &= ~RTE_ETH_DEV_INTR_LSC;
1654
1655 /* Setting up rx_header size for the device */
1656 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF) ||
1657 vtpci_with_feature(hw, VIRTIO_F_VERSION_1) ||
1658 vtpci_with_feature(hw, VIRTIO_F_RING_PACKED))
1659 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf);
1660 else
1661 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr);
1662
1663 /* Copy the permanent MAC address to: virtio_hw */
1664 virtio_get_hwaddr(hw);
1665 ether_addr_copy((struct ether_addr *) hw->mac_addr,
1666 &eth_dev->data->mac_addrs[0]);
1667 PMD_INIT_LOG(DEBUG,
1668 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1669 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2],
1670 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]);
1671
1672 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) {
1673 config = &local_config;
1674
1675 vtpci_read_dev_config(hw,
1676 offsetof(struct virtio_net_config, mac),
1677 &config->mac, sizeof(config->mac));
1678
1679 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1680 vtpci_read_dev_config(hw,
1681 offsetof(struct virtio_net_config, status),
1682 &config->status, sizeof(config->status));
1683 } else {
1684 PMD_INIT_LOG(DEBUG,
1685 "VIRTIO_NET_F_STATUS is not supported");
1686 config->status = 0;
1687 }
1688
1689 if (vtpci_with_feature(hw, VIRTIO_NET_F_MQ)) {
1690 vtpci_read_dev_config(hw,
1691 offsetof(struct virtio_net_config, max_virtqueue_pairs),
1692 &config->max_virtqueue_pairs,
1693 sizeof(config->max_virtqueue_pairs));
1694 } else {
1695 PMD_INIT_LOG(DEBUG,
1696 "VIRTIO_NET_F_MQ is not supported");
1697 config->max_virtqueue_pairs = 1;
1698 }
1699
1700 hw->max_queue_pairs = config->max_virtqueue_pairs;
1701
1702 if (vtpci_with_feature(hw, VIRTIO_NET_F_MTU)) {
1703 vtpci_read_dev_config(hw,
1704 offsetof(struct virtio_net_config, mtu),
1705 &config->mtu,
1706 sizeof(config->mtu));
1707
1708 /*
1709 * MTU value has already been checked at negotiation
1710 * time, but check again in case it has changed since
1711 * then, which should not happen.
1712 */
1713 if (config->mtu < ETHER_MIN_MTU) {
1714 PMD_INIT_LOG(ERR, "invalid max MTU value (%u)",
1715 config->mtu);
1716 return -1;
1717 }
1718
1719 hw->max_mtu = config->mtu;
1720 /* Set initial MTU to maximum one supported by vhost */
1721 eth_dev->data->mtu = config->mtu;
1722
1723 } else {
1724 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - ETHER_HDR_LEN -
1725 VLAN_TAG_LEN - hw->vtnet_hdr_size;
1726 }
1727
1728 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d",
1729 config->max_virtqueue_pairs);
1730 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status);
1731 PMD_INIT_LOG(DEBUG,
1732 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1733 config->mac[0], config->mac[1],
1734 config->mac[2], config->mac[3],
1735 config->mac[4], config->mac[5]);
1736 } else {
1737 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=1");
1738 hw->max_queue_pairs = 1;
1739 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - ETHER_HDR_LEN -
1740 VLAN_TAG_LEN - hw->vtnet_hdr_size;
1741 }
1742
1743 ret = virtio_alloc_queues(eth_dev);
1744 if (ret < 0)
1745 return ret;
1746
1747 if (eth_dev->data->dev_conf.intr_conf.rxq) {
1748 if (virtio_configure_intr(eth_dev) < 0) {
1749 PMD_INIT_LOG(ERR, "failed to configure interrupt");
1750 return -1;
1751 }
1752 }
1753
1754 vtpci_reinit_complete(hw);
1755
1756 if (pci_dev)
1757 PMD_INIT_LOG(DEBUG, "port %d vendorID=0x%x deviceID=0x%x",
1758 eth_dev->data->port_id, pci_dev->id.vendor_id,
1759 pci_dev->id.device_id);
1760
1761 return 0;
1762 }
1763
1764 /*
1765 * Remap the PCI device again (IO port map for legacy device and
1766 * memory map for modern device), so that the secondary process
1767 * could have the PCI initiated correctly.
1768 */
1769 static int
1770 virtio_remap_pci(struct rte_pci_device *pci_dev, struct virtio_hw *hw)
1771 {
1772 if (hw->modern) {
1773 /*
1774 * We don't have to re-parse the PCI config space, since
1775 * rte_pci_map_device() makes sure the mapped address
1776 * in secondary process would equal to the one mapped in
1777 * the primary process: error will be returned if that
1778 * requirement is not met.
1779 *
1780 * That said, we could simply reuse all cap pointers
1781 * (such as dev_cfg, common_cfg, etc.) parsed from the
1782 * primary process, which is stored in shared memory.
1783 */
1784 if (rte_pci_map_device(pci_dev)) {
1785 PMD_INIT_LOG(DEBUG, "failed to map pci device!");
1786 return -1;
1787 }
1788 } else {
1789 if (rte_pci_ioport_map(pci_dev, 0, VTPCI_IO(hw)) < 0)
1790 return -1;
1791 }
1792
1793 return 0;
1794 }
1795
1796 static void
1797 virtio_set_vtpci_ops(struct virtio_hw *hw)
1798 {
1799 #ifdef RTE_VIRTIO_USER
1800 if (hw->virtio_user_dev)
1801 VTPCI_OPS(hw) = &virtio_user_ops;
1802 else
1803 #endif
1804 if (hw->modern)
1805 VTPCI_OPS(hw) = &modern_ops;
1806 else
1807 VTPCI_OPS(hw) = &legacy_ops;
1808 }
1809
1810 /*
1811 * This function is based on probe() function in virtio_pci.c
1812 * It returns 0 on success.
1813 */
1814 int
1815 eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
1816 {
1817 struct virtio_hw *hw = eth_dev->data->dev_private;
1818 int ret;
1819
1820 RTE_BUILD_BUG_ON(RTE_PKTMBUF_HEADROOM < sizeof(struct virtio_net_hdr_mrg_rxbuf));
1821
1822 eth_dev->dev_ops = &virtio_eth_dev_ops;
1823
1824 if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
1825 if (!hw->virtio_user_dev) {
1826 ret = virtio_remap_pci(RTE_ETH_DEV_TO_PCI(eth_dev), hw);
1827 if (ret)
1828 return ret;
1829 }
1830
1831 virtio_set_vtpci_ops(hw);
1832 set_rxtx_funcs(eth_dev);
1833
1834 return 0;
1835 }
1836
1837 /* Allocate memory for storing MAC addresses */
1838 eth_dev->data->mac_addrs = rte_zmalloc("virtio", VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN, 0);
1839 if (eth_dev->data->mac_addrs == NULL) {
1840 PMD_INIT_LOG(ERR,
1841 "Failed to allocate %d bytes needed to store MAC addresses",
1842 VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN);
1843 return -ENOMEM;
1844 }
1845
1846 hw->port_id = eth_dev->data->port_id;
1847 /* For virtio_user case the hw->virtio_user_dev is populated by
1848 * virtio_user_eth_dev_alloc() before eth_virtio_dev_init() is called.
1849 */
1850 if (!hw->virtio_user_dev) {
1851 ret = vtpci_init(RTE_ETH_DEV_TO_PCI(eth_dev), hw);
1852 if (ret)
1853 goto out;
1854 }
1855
1856 /* reset device and negotiate default features */
1857 ret = virtio_init_device(eth_dev, VIRTIO_PMD_DEFAULT_GUEST_FEATURES);
1858 if (ret < 0)
1859 goto out;
1860
1861 return 0;
1862
1863 out:
1864 rte_free(eth_dev->data->mac_addrs);
1865 eth_dev->data->mac_addrs = NULL;
1866 return ret;
1867 }
1868
1869 static int
1870 eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev)
1871 {
1872 PMD_INIT_FUNC_TRACE();
1873
1874 if (rte_eal_process_type() == RTE_PROC_SECONDARY)
1875 return 0;
1876
1877 virtio_dev_stop(eth_dev);
1878 virtio_dev_close(eth_dev);
1879
1880 eth_dev->dev_ops = NULL;
1881 eth_dev->tx_pkt_burst = NULL;
1882 eth_dev->rx_pkt_burst = NULL;
1883
1884 if (eth_dev->device)
1885 rte_pci_unmap_device(RTE_ETH_DEV_TO_PCI(eth_dev));
1886
1887 PMD_INIT_LOG(DEBUG, "dev_uninit completed");
1888
1889 return 0;
1890 }
1891
1892 static int vdpa_check_handler(__rte_unused const char *key,
1893 const char *value, __rte_unused void *opaque)
1894 {
1895 if (strcmp(value, "1"))
1896 return -1;
1897
1898 return 0;
1899 }
1900
1901 static int
1902 vdpa_mode_selected(struct rte_devargs *devargs)
1903 {
1904 struct rte_kvargs *kvlist;
1905 const char *key = "vdpa";
1906 int ret = 0;
1907
1908 if (devargs == NULL)
1909 return 0;
1910
1911 kvlist = rte_kvargs_parse(devargs->args, NULL);
1912 if (kvlist == NULL)
1913 return 0;
1914
1915 if (!rte_kvargs_count(kvlist, key))
1916 goto exit;
1917
1918 /* vdpa mode selected when there's a key-value pair: vdpa=1 */
1919 if (rte_kvargs_process(kvlist, key,
1920 vdpa_check_handler, NULL) < 0) {
1921 goto exit;
1922 }
1923 ret = 1;
1924
1925 exit:
1926 rte_kvargs_free(kvlist);
1927 return ret;
1928 }
1929
1930 static int eth_virtio_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
1931 struct rte_pci_device *pci_dev)
1932 {
1933 if (rte_eal_iopl_init() != 0) {
1934 PMD_INIT_LOG(ERR, "IOPL call failed - cannot use virtio PMD");
1935 return 1;
1936 }
1937
1938 /* virtio pmd skips probe if device needs to work in vdpa mode */
1939 if (vdpa_mode_selected(pci_dev->device.devargs))
1940 return 1;
1941
1942 return rte_eth_dev_pci_generic_probe(pci_dev, sizeof(struct virtio_hw),
1943 eth_virtio_dev_init);
1944 }
1945
1946 static int eth_virtio_pci_remove(struct rte_pci_device *pci_dev)
1947 {
1948 return rte_eth_dev_pci_generic_remove(pci_dev, eth_virtio_dev_uninit);
1949 }
1950
1951 static struct rte_pci_driver rte_virtio_pmd = {
1952 .driver = {
1953 .name = "net_virtio",
1954 },
1955 .id_table = pci_id_virtio_map,
1956 .drv_flags = 0,
1957 .probe = eth_virtio_pci_probe,
1958 .remove = eth_virtio_pci_remove,
1959 };
1960
1961 RTE_INIT(rte_virtio_pmd_init)
1962 {
1963 rte_eal_iopl_init();
1964 rte_pci_register(&rte_virtio_pmd);
1965 }
1966
1967 static bool
1968 rx_offload_enabled(struct virtio_hw *hw)
1969 {
1970 return vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM) ||
1971 vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) ||
1972 vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6);
1973 }
1974
1975 static bool
1976 tx_offload_enabled(struct virtio_hw *hw)
1977 {
1978 return vtpci_with_feature(hw, VIRTIO_NET_F_CSUM) ||
1979 vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO4) ||
1980 vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO6);
1981 }
1982
1983 /*
1984 * Configure virtio device
1985 * It returns 0 on success.
1986 */
1987 static int
1988 virtio_dev_configure(struct rte_eth_dev *dev)
1989 {
1990 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
1991 const struct rte_eth_txmode *txmode = &dev->data->dev_conf.txmode;
1992 struct virtio_hw *hw = dev->data->dev_private;
1993 uint32_t ether_hdr_len = ETHER_HDR_LEN + VLAN_TAG_LEN +
1994 hw->vtnet_hdr_size;
1995 uint64_t rx_offloads = rxmode->offloads;
1996 uint64_t tx_offloads = txmode->offloads;
1997 uint64_t req_features;
1998 int ret;
1999
2000 PMD_INIT_LOG(DEBUG, "configure");
2001 req_features = VIRTIO_PMD_DEFAULT_GUEST_FEATURES;
2002
2003 if (dev->data->dev_conf.intr_conf.rxq) {
2004 ret = virtio_init_device(dev, hw->req_guest_features);
2005 if (ret < 0)
2006 return ret;
2007 }
2008
2009 if (rxmode->max_rx_pkt_len > hw->max_mtu + ether_hdr_len)
2010 req_features &= ~(1ULL << VIRTIO_NET_F_MTU);
2011
2012 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM |
2013 DEV_RX_OFFLOAD_TCP_CKSUM))
2014 req_features |= (1ULL << VIRTIO_NET_F_GUEST_CSUM);
2015
2016 if (rx_offloads & DEV_RX_OFFLOAD_TCP_LRO)
2017 req_features |=
2018 (1ULL << VIRTIO_NET_F_GUEST_TSO4) |
2019 (1ULL << VIRTIO_NET_F_GUEST_TSO6);
2020
2021 if (tx_offloads & (DEV_TX_OFFLOAD_UDP_CKSUM |
2022 DEV_TX_OFFLOAD_TCP_CKSUM))
2023 req_features |= (1ULL << VIRTIO_NET_F_CSUM);
2024
2025 if (tx_offloads & DEV_TX_OFFLOAD_TCP_TSO)
2026 req_features |=
2027 (1ULL << VIRTIO_NET_F_HOST_TSO4) |
2028 (1ULL << VIRTIO_NET_F_HOST_TSO6);
2029
2030 /* if request features changed, reinit the device */
2031 if (req_features != hw->req_guest_features) {
2032 ret = virtio_init_device(dev, req_features);
2033 if (ret < 0)
2034 return ret;
2035 }
2036
2037 if ((rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM |
2038 DEV_RX_OFFLOAD_TCP_CKSUM)) &&
2039 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM)) {
2040 PMD_DRV_LOG(ERR,
2041 "rx checksum not available on this host");
2042 return -ENOTSUP;
2043 }
2044
2045 if ((rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) &&
2046 (!vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) ||
2047 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6))) {
2048 PMD_DRV_LOG(ERR,
2049 "Large Receive Offload not available on this host");
2050 return -ENOTSUP;
2051 }
2052
2053 /* start control queue */
2054 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ))
2055 virtio_dev_cq_start(dev);
2056
2057 if (rx_offloads & DEV_RX_OFFLOAD_VLAN_STRIP)
2058 hw->vlan_strip = 1;
2059
2060 if ((rx_offloads & DEV_RX_OFFLOAD_VLAN_FILTER)
2061 && !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
2062 PMD_DRV_LOG(ERR,
2063 "vlan filtering not available on this host");
2064 return -ENOTSUP;
2065 }
2066
2067 hw->has_tx_offload = tx_offload_enabled(hw);
2068 hw->has_rx_offload = rx_offload_enabled(hw);
2069
2070 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
2071 /* Enable vector (0) for Link State Intrerrupt */
2072 if (VTPCI_OPS(hw)->set_config_irq(hw, 0) ==
2073 VIRTIO_MSI_NO_VECTOR) {
2074 PMD_DRV_LOG(ERR, "failed to set config vector");
2075 return -EBUSY;
2076 }
2077
2078 rte_spinlock_init(&hw->state_lock);
2079
2080 hw->use_simple_rx = 1;
2081
2082 if (vtpci_with_feature(hw, VIRTIO_F_IN_ORDER)) {
2083 hw->use_inorder_tx = 1;
2084 hw->use_inorder_rx = 1;
2085 hw->use_simple_rx = 0;
2086 }
2087
2088 if (vtpci_packed_queue(hw)) {
2089 hw->use_simple_rx = 0;
2090 hw->use_inorder_rx = 0;
2091 }
2092
2093 #if defined RTE_ARCH_ARM64 || defined RTE_ARCH_ARM
2094 if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON)) {
2095 hw->use_simple_rx = 0;
2096 }
2097 #endif
2098 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
2099 hw->use_simple_rx = 0;
2100 }
2101
2102 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM |
2103 DEV_RX_OFFLOAD_TCP_CKSUM |
2104 DEV_RX_OFFLOAD_TCP_LRO |
2105 DEV_RX_OFFLOAD_VLAN_STRIP))
2106 hw->use_simple_rx = 0;
2107
2108 hw->opened = true;
2109
2110 return 0;
2111 }
2112
2113
2114 static int
2115 virtio_dev_start(struct rte_eth_dev *dev)
2116 {
2117 uint16_t nb_queues, i;
2118 struct virtnet_rx *rxvq;
2119 struct virtnet_tx *txvq __rte_unused;
2120 struct virtio_hw *hw = dev->data->dev_private;
2121 int ret;
2122
2123 /* Finish the initialization of the queues */
2124 for (i = 0; i < dev->data->nb_rx_queues; i++) {
2125 ret = virtio_dev_rx_queue_setup_finish(dev, i);
2126 if (ret < 0)
2127 return ret;
2128 }
2129 for (i = 0; i < dev->data->nb_tx_queues; i++) {
2130 ret = virtio_dev_tx_queue_setup_finish(dev, i);
2131 if (ret < 0)
2132 return ret;
2133 }
2134
2135 /* check if lsc interrupt feature is enabled */
2136 if (dev->data->dev_conf.intr_conf.lsc) {
2137 if (!(dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)) {
2138 PMD_DRV_LOG(ERR, "link status not supported by host");
2139 return -ENOTSUP;
2140 }
2141 }
2142
2143 /* Enable uio/vfio intr/eventfd mapping: althrough we already did that
2144 * in device configure, but it could be unmapped when device is
2145 * stopped.
2146 */
2147 if (dev->data->dev_conf.intr_conf.lsc ||
2148 dev->data->dev_conf.intr_conf.rxq) {
2149 virtio_intr_disable(dev);
2150
2151 /* Setup interrupt callback */
2152 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
2153 rte_intr_callback_register(dev->intr_handle,
2154 virtio_interrupt_handler,
2155 dev);
2156
2157 if (virtio_intr_enable(dev) < 0) {
2158 PMD_DRV_LOG(ERR, "interrupt enable failed");
2159 return -EIO;
2160 }
2161 }
2162
2163 /*Notify the backend
2164 *Otherwise the tap backend might already stop its queue due to fullness.
2165 *vhost backend will have no chance to be waked up
2166 */
2167 nb_queues = RTE_MAX(dev->data->nb_rx_queues, dev->data->nb_tx_queues);
2168 if (hw->max_queue_pairs > 1) {
2169 if (virtio_set_multiple_queues(dev, nb_queues) != 0)
2170 return -EINVAL;
2171 }
2172
2173 PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues);
2174
2175 for (i = 0; i < dev->data->nb_rx_queues; i++) {
2176 rxvq = dev->data->rx_queues[i];
2177 /* Flush the old packets */
2178 virtqueue_rxvq_flush(rxvq->vq);
2179 virtqueue_notify(rxvq->vq);
2180 }
2181
2182 for (i = 0; i < dev->data->nb_tx_queues; i++) {
2183 txvq = dev->data->tx_queues[i];
2184 virtqueue_notify(txvq->vq);
2185 }
2186
2187 PMD_INIT_LOG(DEBUG, "Notified backend at initialization");
2188
2189 for (i = 0; i < dev->data->nb_rx_queues; i++) {
2190 rxvq = dev->data->rx_queues[i];
2191 VIRTQUEUE_DUMP(rxvq->vq);
2192 }
2193
2194 for (i = 0; i < dev->data->nb_tx_queues; i++) {
2195 txvq = dev->data->tx_queues[i];
2196 VIRTQUEUE_DUMP(txvq->vq);
2197 }
2198
2199 set_rxtx_funcs(dev);
2200 hw->started = true;
2201
2202 /* Initialize Link state */
2203 virtio_dev_link_update(dev, 0);
2204
2205 return 0;
2206 }
2207
2208 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev)
2209 {
2210 struct virtio_hw *hw = dev->data->dev_private;
2211 uint16_t nr_vq = virtio_get_nr_vq(hw);
2212 const char *type __rte_unused;
2213 unsigned int i, mbuf_num = 0;
2214 struct virtqueue *vq;
2215 struct rte_mbuf *buf;
2216 int queue_type;
2217
2218 if (hw->vqs == NULL)
2219 return;
2220
2221 for (i = 0; i < nr_vq; i++) {
2222 vq = hw->vqs[i];
2223 if (!vq)
2224 continue;
2225
2226 queue_type = virtio_get_queue_type(hw, i);
2227 if (queue_type == VTNET_RQ)
2228 type = "rxq";
2229 else if (queue_type == VTNET_TQ)
2230 type = "txq";
2231 else
2232 continue;
2233
2234 PMD_INIT_LOG(DEBUG,
2235 "Before freeing %s[%d] used and unused buf",
2236 type, i);
2237 VIRTQUEUE_DUMP(vq);
2238
2239 while ((buf = virtqueue_detach_unused(vq)) != NULL) {
2240 rte_pktmbuf_free(buf);
2241 mbuf_num++;
2242 }
2243
2244 PMD_INIT_LOG(DEBUG,
2245 "After freeing %s[%d] used and unused buf",
2246 type, i);
2247 VIRTQUEUE_DUMP(vq);
2248 }
2249
2250 PMD_INIT_LOG(DEBUG, "%d mbufs freed", mbuf_num);
2251 }
2252
2253 /*
2254 * Stop device: disable interrupt and mark link down
2255 */
2256 static void
2257 virtio_dev_stop(struct rte_eth_dev *dev)
2258 {
2259 struct virtio_hw *hw = dev->data->dev_private;
2260 struct rte_eth_link link;
2261 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf;
2262
2263 PMD_INIT_LOG(DEBUG, "stop");
2264
2265 rte_spinlock_lock(&hw->state_lock);
2266 if (!hw->started)
2267 goto out_unlock;
2268 hw->started = false;
2269
2270 if (intr_conf->lsc || intr_conf->rxq) {
2271 virtio_intr_disable(dev);
2272
2273 /* Reset interrupt callback */
2274 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) {
2275 rte_intr_callback_unregister(dev->intr_handle,
2276 virtio_interrupt_handler,
2277 dev);
2278 }
2279 }
2280
2281 memset(&link, 0, sizeof(link));
2282 rte_eth_linkstatus_set(dev, &link);
2283 out_unlock:
2284 rte_spinlock_unlock(&hw->state_lock);
2285 }
2286
2287 static int
2288 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete)
2289 {
2290 struct rte_eth_link link;
2291 uint16_t status;
2292 struct virtio_hw *hw = dev->data->dev_private;
2293
2294 memset(&link, 0, sizeof(link));
2295 link.link_duplex = ETH_LINK_FULL_DUPLEX;
2296 link.link_speed = ETH_SPEED_NUM_10G;
2297 link.link_autoneg = ETH_LINK_FIXED;
2298
2299 if (!hw->started) {
2300 link.link_status = ETH_LINK_DOWN;
2301 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
2302 PMD_INIT_LOG(DEBUG, "Get link status from hw");
2303 vtpci_read_dev_config(hw,
2304 offsetof(struct virtio_net_config, status),
2305 &status, sizeof(status));
2306 if ((status & VIRTIO_NET_S_LINK_UP) == 0) {
2307 link.link_status = ETH_LINK_DOWN;
2308 PMD_INIT_LOG(DEBUG, "Port %d is down",
2309 dev->data->port_id);
2310 } else {
2311 link.link_status = ETH_LINK_UP;
2312 PMD_INIT_LOG(DEBUG, "Port %d is up",
2313 dev->data->port_id);
2314 }
2315 } else {
2316 link.link_status = ETH_LINK_UP;
2317 }
2318
2319 return rte_eth_linkstatus_set(dev, &link);
2320 }
2321
2322 static int
2323 virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask)
2324 {
2325 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
2326 struct virtio_hw *hw = dev->data->dev_private;
2327 uint64_t offloads = rxmode->offloads;
2328
2329 if (mask & ETH_VLAN_FILTER_MASK) {
2330 if ((offloads & DEV_RX_OFFLOAD_VLAN_FILTER) &&
2331 !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
2332
2333 PMD_DRV_LOG(NOTICE,
2334 "vlan filtering not available on this host");
2335
2336 return -ENOTSUP;
2337 }
2338 }
2339
2340 if (mask & ETH_VLAN_STRIP_MASK)
2341 hw->vlan_strip = !!(offloads & DEV_RX_OFFLOAD_VLAN_STRIP);
2342
2343 return 0;
2344 }
2345
2346 static void
2347 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
2348 {
2349 uint64_t tso_mask, host_features;
2350 struct virtio_hw *hw = dev->data->dev_private;
2351
2352 dev_info->speed_capa = ETH_LINK_SPEED_10G; /* fake value */
2353
2354 dev_info->max_rx_queues =
2355 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_RX_QUEUES);
2356 dev_info->max_tx_queues =
2357 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_TX_QUEUES);
2358 dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE;
2359 dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN;
2360 dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS;
2361
2362 host_features = VTPCI_OPS(hw)->get_features(hw);
2363 dev_info->rx_offload_capa = DEV_RX_OFFLOAD_VLAN_STRIP;
2364 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_JUMBO_FRAME;
2365 if (host_features & (1ULL << VIRTIO_NET_F_GUEST_CSUM)) {
2366 dev_info->rx_offload_capa |=
2367 DEV_RX_OFFLOAD_TCP_CKSUM |
2368 DEV_RX_OFFLOAD_UDP_CKSUM;
2369 }
2370 if (host_features & (1ULL << VIRTIO_NET_F_CTRL_VLAN))
2371 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_VLAN_FILTER;
2372 tso_mask = (1ULL << VIRTIO_NET_F_GUEST_TSO4) |
2373 (1ULL << VIRTIO_NET_F_GUEST_TSO6);
2374 if ((host_features & tso_mask) == tso_mask)
2375 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_TCP_LRO;
2376
2377 dev_info->tx_offload_capa = DEV_TX_OFFLOAD_MULTI_SEGS |
2378 DEV_TX_OFFLOAD_VLAN_INSERT;
2379 if (host_features & (1ULL << VIRTIO_NET_F_CSUM)) {
2380 dev_info->tx_offload_capa |=
2381 DEV_TX_OFFLOAD_UDP_CKSUM |
2382 DEV_TX_OFFLOAD_TCP_CKSUM;
2383 }
2384 tso_mask = (1ULL << VIRTIO_NET_F_HOST_TSO4) |
2385 (1ULL << VIRTIO_NET_F_HOST_TSO6);
2386 if ((host_features & tso_mask) == tso_mask)
2387 dev_info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO;
2388 }
2389
2390 /*
2391 * It enables testpmd to collect per queue stats.
2392 */
2393 static int
2394 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev,
2395 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx,
2396 __rte_unused uint8_t is_rx)
2397 {
2398 return 0;
2399 }
2400
2401 RTE_PMD_EXPORT_NAME(net_virtio, __COUNTER__);
2402 RTE_PMD_REGISTER_PCI_TABLE(net_virtio, pci_id_virtio_map);
2403 RTE_PMD_REGISTER_KMOD_DEP(net_virtio, "* igb_uio | uio_pci_generic | vfio-pci");
2404
2405 RTE_INIT(virtio_init_log)
2406 {
2407 virtio_logtype_init = rte_log_register("pmd.net.virtio.init");
2408 if (virtio_logtype_init >= 0)
2409 rte_log_set_level(virtio_logtype_init, RTE_LOG_NOTICE);
2410 virtio_logtype_driver = rte_log_register("pmd.net.virtio.driver");
2411 if (virtio_logtype_driver >= 0)
2412 rte_log_set_level(virtio_logtype_driver, RTE_LOG_NOTICE);
2413 }
Ceph