1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2016 Intel Corporation
11 #include <ethdev_driver.h>
12 #include <rte_memcpy.h>
13 #include <rte_string_fns.h>
14 #include <rte_memzone.h>
15 #include <rte_malloc.h>
16 #include <rte_branch_prediction.h>
17 #include <rte_ether.h>
20 #include <rte_common.h>
21 #include <rte_errno.h>
22 #include <rte_cpuflags.h>
24 #include <rte_memory.h>
25 #include <rte_eal_paging.h>
28 #include <rte_cycles.h>
29 #include <rte_kvargs.h>
31 #include "virtio_ethdev.h"
33 #include "virtio_logs.h"
34 #include "virtqueue.h"
35 #include "virtio_rxtx.h"
36 #include "virtio_user/virtio_user_dev.h"
38 static int virtio_dev_configure(struct rte_eth_dev *dev);
39 static int virtio_dev_start(struct rte_eth_dev *dev);
40 static int virtio_dev_promiscuous_enable(struct rte_eth_dev *dev);
41 static int virtio_dev_promiscuous_disable(struct rte_eth_dev *dev);
42 static int virtio_dev_allmulticast_enable(struct rte_eth_dev *dev);
43 static int virtio_dev_allmulticast_disable(struct rte_eth_dev *dev);
44 static uint32_t virtio_dev_speed_capa_get(uint32_t speed);
45 static int virtio_dev_devargs_parse(struct rte_devargs *devargs,
48 static int virtio_dev_info_get(struct rte_eth_dev *dev,
49 struct rte_eth_dev_info *dev_info);
50 static int virtio_dev_link_update(struct rte_eth_dev *dev,
51 int wait_to_complete);
52 static int virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask);
54 static void virtio_set_hwaddr(struct virtio_hw *hw);
55 static void virtio_get_hwaddr(struct virtio_hw *hw);
57 static int virtio_dev_stats_get(struct rte_eth_dev *dev,
58 struct rte_eth_stats *stats);
59 static int virtio_dev_xstats_get(struct rte_eth_dev *dev,
60 struct rte_eth_xstat *xstats, unsigned n);
61 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev,
62 struct rte_eth_xstat_name *xstats_names,
64 static int virtio_dev_stats_reset(struct rte_eth_dev *dev);
65 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev);
66 static int virtio_vlan_filter_set(struct rte_eth_dev *dev,
67 uint16_t vlan_id, int on);
68 static int virtio_mac_addr_add(struct rte_eth_dev *dev,
69 struct rte_ether_addr *mac_addr,
70 uint32_t index, uint32_t vmdq);
71 static void virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index);
72 static int virtio_mac_addr_set(struct rte_eth_dev *dev,
73 struct rte_ether_addr *mac_addr);
75 static int virtio_intr_disable(struct rte_eth_dev *dev);
77 static int virtio_dev_queue_stats_mapping_set(
78 struct rte_eth_dev *eth_dev,
83 static void virtio_notify_peers(struct rte_eth_dev *dev);
84 static void virtio_ack_link_announce(struct rte_eth_dev *dev);
86 struct rte_virtio_xstats_name_off {
87 char name[RTE_ETH_XSTATS_NAME_SIZE];
91 /* [rt]x_qX_ is prepended to the name string here */
92 static const struct rte_virtio_xstats_name_off rte_virtio_rxq_stat_strings[] = {
93 {"good_packets", offsetof(struct virtnet_rx, stats.packets)},
94 {"good_bytes", offsetof(struct virtnet_rx, stats.bytes)},
95 {"errors", offsetof(struct virtnet_rx, stats.errors)},
96 {"multicast_packets", offsetof(struct virtnet_rx, stats.multicast)},
97 {"broadcast_packets", offsetof(struct virtnet_rx, stats.broadcast)},
98 {"undersize_packets", offsetof(struct virtnet_rx, stats.size_bins[0])},
99 {"size_64_packets", offsetof(struct virtnet_rx, stats.size_bins[1])},
100 {"size_65_127_packets", offsetof(struct virtnet_rx, stats.size_bins[2])},
101 {"size_128_255_packets", offsetof(struct virtnet_rx, stats.size_bins[3])},
102 {"size_256_511_packets", offsetof(struct virtnet_rx, stats.size_bins[4])},
103 {"size_512_1023_packets", offsetof(struct virtnet_rx, stats.size_bins[5])},
104 {"size_1024_1518_packets", offsetof(struct virtnet_rx, stats.size_bins[6])},
105 {"size_1519_max_packets", offsetof(struct virtnet_rx, stats.size_bins[7])},
108 /* [rt]x_qX_ is prepended to the name string here */
109 static const struct rte_virtio_xstats_name_off rte_virtio_txq_stat_strings[] = {
110 {"good_packets", offsetof(struct virtnet_tx, stats.packets)},
111 {"good_bytes", offsetof(struct virtnet_tx, stats.bytes)},
112 {"multicast_packets", offsetof(struct virtnet_tx, stats.multicast)},
113 {"broadcast_packets", offsetof(struct virtnet_tx, stats.broadcast)},
114 {"undersize_packets", offsetof(struct virtnet_tx, stats.size_bins[0])},
115 {"size_64_packets", offsetof(struct virtnet_tx, stats.size_bins[1])},
116 {"size_65_127_packets", offsetof(struct virtnet_tx, stats.size_bins[2])},
117 {"size_128_255_packets", offsetof(struct virtnet_tx, stats.size_bins[3])},
118 {"size_256_511_packets", offsetof(struct virtnet_tx, stats.size_bins[4])},
119 {"size_512_1023_packets", offsetof(struct virtnet_tx, stats.size_bins[5])},
120 {"size_1024_1518_packets", offsetof(struct virtnet_tx, stats.size_bins[6])},
121 {"size_1519_max_packets", offsetof(struct virtnet_tx, stats.size_bins[7])},
124 #define VIRTIO_NB_RXQ_XSTATS (sizeof(rte_virtio_rxq_stat_strings) / \
125 sizeof(rte_virtio_rxq_stat_strings[0]))
126 #define VIRTIO_NB_TXQ_XSTATS (sizeof(rte_virtio_txq_stat_strings) / \
127 sizeof(rte_virtio_txq_stat_strings[0]))
129 struct virtio_hw_internal virtio_hw_internal[RTE_MAX_ETHPORTS];
131 static struct virtio_pmd_ctrl *
132 virtio_send_command_packed(struct virtnet_ctl *cvq,
133 struct virtio_pmd_ctrl *ctrl,
134 int *dlen, int pkt_num)
136 struct virtqueue *vq = virtnet_cq_to_vq(cvq);
138 struct vring_packed_desc *desc = vq->vq_packed.ring.desc;
139 struct virtio_pmd_ctrl *result;
146 * Format is enforced in qemu code:
147 * One TX packet for header;
148 * At least one TX packet per argument;
149 * One RX packet for ACK.
151 head = vq->vq_avail_idx;
152 flags = vq->vq_packed.cached_flags;
153 desc[head].addr = cvq->virtio_net_hdr_mem;
154 desc[head].len = sizeof(struct virtio_net_ctrl_hdr);
157 if (++vq->vq_avail_idx >= vq->vq_nentries) {
158 vq->vq_avail_idx -= vq->vq_nentries;
159 vq->vq_packed.cached_flags ^= VRING_PACKED_DESC_F_AVAIL_USED;
162 for (k = 0; k < pkt_num; k++) {
163 desc[vq->vq_avail_idx].addr = cvq->virtio_net_hdr_mem
164 + sizeof(struct virtio_net_ctrl_hdr)
165 + sizeof(ctrl->status) + sizeof(uint8_t) * sum;
166 desc[vq->vq_avail_idx].len = dlen[k];
167 desc[vq->vq_avail_idx].flags = VRING_DESC_F_NEXT |
168 vq->vq_packed.cached_flags;
172 if (++vq->vq_avail_idx >= vq->vq_nentries) {
173 vq->vq_avail_idx -= vq->vq_nentries;
174 vq->vq_packed.cached_flags ^=
175 VRING_PACKED_DESC_F_AVAIL_USED;
179 desc[vq->vq_avail_idx].addr = cvq->virtio_net_hdr_mem
180 + sizeof(struct virtio_net_ctrl_hdr);
181 desc[vq->vq_avail_idx].len = sizeof(ctrl->status);
182 desc[vq->vq_avail_idx].flags = VRING_DESC_F_WRITE |
183 vq->vq_packed.cached_flags;
186 if (++vq->vq_avail_idx >= vq->vq_nentries) {
187 vq->vq_avail_idx -= vq->vq_nentries;
188 vq->vq_packed.cached_flags ^= VRING_PACKED_DESC_F_AVAIL_USED;
191 virtqueue_store_flags_packed(&desc[head], VRING_DESC_F_NEXT | flags,
192 vq->hw->weak_barriers);
194 virtio_wmb(vq->hw->weak_barriers);
195 virtqueue_notify(vq);
197 /* wait for used desc in virtqueue
198 * desc_is_used has a load-acquire or rte_io_rmb inside
200 while (!desc_is_used(&desc[head], vq))
203 /* now get used descriptors */
204 vq->vq_free_cnt += nb_descs;
205 vq->vq_used_cons_idx += nb_descs;
206 if (vq->vq_used_cons_idx >= vq->vq_nentries) {
207 vq->vq_used_cons_idx -= vq->vq_nentries;
208 vq->vq_packed.used_wrap_counter ^= 1;
211 PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\n"
212 "vq->vq_avail_idx=%d\n"
213 "vq->vq_used_cons_idx=%d\n"
214 "vq->vq_packed.cached_flags=0x%x\n"
215 "vq->vq_packed.used_wrap_counter=%d\n",
218 vq->vq_used_cons_idx,
219 vq->vq_packed.cached_flags,
220 vq->vq_packed.used_wrap_counter);
222 result = cvq->virtio_net_hdr_mz->addr;
226 static struct virtio_pmd_ctrl *
227 virtio_send_command_split(struct virtnet_ctl *cvq,
228 struct virtio_pmd_ctrl *ctrl,
229 int *dlen, int pkt_num)
231 struct virtio_pmd_ctrl *result;
232 struct virtqueue *vq = virtnet_cq_to_vq(cvq);
236 head = vq->vq_desc_head_idx;
239 * Format is enforced in qemu code:
240 * One TX packet for header;
241 * At least one TX packet per argument;
242 * One RX packet for ACK.
244 vq->vq_split.ring.desc[head].flags = VRING_DESC_F_NEXT;
245 vq->vq_split.ring.desc[head].addr = cvq->virtio_net_hdr_mem;
246 vq->vq_split.ring.desc[head].len = sizeof(struct virtio_net_ctrl_hdr);
248 i = vq->vq_split.ring.desc[head].next;
250 for (k = 0; k < pkt_num; k++) {
251 vq->vq_split.ring.desc[i].flags = VRING_DESC_F_NEXT;
252 vq->vq_split.ring.desc[i].addr = cvq->virtio_net_hdr_mem
253 + sizeof(struct virtio_net_ctrl_hdr)
254 + sizeof(ctrl->status) + sizeof(uint8_t)*sum;
255 vq->vq_split.ring.desc[i].len = dlen[k];
258 i = vq->vq_split.ring.desc[i].next;
261 vq->vq_split.ring.desc[i].flags = VRING_DESC_F_WRITE;
262 vq->vq_split.ring.desc[i].addr = cvq->virtio_net_hdr_mem
263 + sizeof(struct virtio_net_ctrl_hdr);
264 vq->vq_split.ring.desc[i].len = sizeof(ctrl->status);
267 vq->vq_desc_head_idx = vq->vq_split.ring.desc[i].next;
269 vq_update_avail_ring(vq, head);
270 vq_update_avail_idx(vq);
272 PMD_INIT_LOG(DEBUG, "vq->vq_queue_index = %d", vq->vq_queue_index);
274 virtqueue_notify(vq);
276 while (virtqueue_nused(vq) == 0)
279 while (virtqueue_nused(vq)) {
280 uint32_t idx, desc_idx, used_idx;
281 struct vring_used_elem *uep;
283 used_idx = (uint32_t)(vq->vq_used_cons_idx
284 & (vq->vq_nentries - 1));
285 uep = &vq->vq_split.ring.used->ring[used_idx];
286 idx = (uint32_t) uep->id;
289 while (vq->vq_split.ring.desc[desc_idx].flags &
291 desc_idx = vq->vq_split.ring.desc[desc_idx].next;
295 vq->vq_split.ring.desc[desc_idx].next = vq->vq_desc_head_idx;
296 vq->vq_desc_head_idx = idx;
298 vq->vq_used_cons_idx++;
302 PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\nvq->vq_desc_head_idx=%d",
303 vq->vq_free_cnt, vq->vq_desc_head_idx);
305 result = cvq->virtio_net_hdr_mz->addr;
310 virtio_send_command(struct virtnet_ctl *cvq, struct virtio_pmd_ctrl *ctrl,
311 int *dlen, int pkt_num)
313 virtio_net_ctrl_ack status = ~0;
314 struct virtio_pmd_ctrl *result;
315 struct virtqueue *vq;
317 ctrl->status = status;
320 PMD_INIT_LOG(ERR, "Control queue is not supported.");
324 rte_spinlock_lock(&cvq->lock);
325 vq = virtnet_cq_to_vq(cvq);
327 PMD_INIT_LOG(DEBUG, "vq->vq_desc_head_idx = %d, status = %d, "
328 "vq->hw->cvq = %p vq = %p",
329 vq->vq_desc_head_idx, status, vq->hw->cvq, vq);
331 if (vq->vq_free_cnt < pkt_num + 2 || pkt_num < 1) {
332 rte_spinlock_unlock(&cvq->lock);
336 memcpy(cvq->virtio_net_hdr_mz->addr, ctrl,
337 sizeof(struct virtio_pmd_ctrl));
339 if (virtio_with_packed_queue(vq->hw))
340 result = virtio_send_command_packed(cvq, ctrl, dlen, pkt_num);
342 result = virtio_send_command_split(cvq, ctrl, dlen, pkt_num);
344 rte_spinlock_unlock(&cvq->lock);
345 return result->status;
349 virtio_set_multiple_queues(struct rte_eth_dev *dev, uint16_t nb_queues)
351 struct virtio_hw *hw = dev->data->dev_private;
352 struct virtio_pmd_ctrl ctrl;
356 ctrl.hdr.class = VIRTIO_NET_CTRL_MQ;
357 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET;
358 memcpy(ctrl.data, &nb_queues, sizeof(uint16_t));
360 dlen[0] = sizeof(uint16_t);
362 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
364 PMD_INIT_LOG(ERR, "Multiqueue configured but send command "
365 "failed, this is too late now...");
373 virtio_dev_queue_release(void *queue __rte_unused)
379 virtio_get_nr_vq(struct virtio_hw *hw)
381 uint16_t nr_vq = hw->max_queue_pairs * 2;
383 if (virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VQ))
390 virtio_init_vring(struct virtqueue *vq)
392 int size = vq->vq_nentries;
393 uint8_t *ring_mem = vq->vq_ring_virt_mem;
395 PMD_INIT_FUNC_TRACE();
397 memset(ring_mem, 0, vq->vq_ring_size);
399 vq->vq_used_cons_idx = 0;
400 vq->vq_desc_head_idx = 0;
401 vq->vq_avail_idx = 0;
402 vq->vq_desc_tail_idx = (uint16_t)(vq->vq_nentries - 1);
403 vq->vq_free_cnt = vq->vq_nentries;
404 memset(vq->vq_descx, 0, sizeof(struct vq_desc_extra) * vq->vq_nentries);
405 if (virtio_with_packed_queue(vq->hw)) {
406 vring_init_packed(&vq->vq_packed.ring, ring_mem,
407 VIRTIO_VRING_ALIGN, size);
408 vring_desc_init_packed(vq, size);
410 struct vring *vr = &vq->vq_split.ring;
412 vring_init_split(vr, ring_mem, VIRTIO_VRING_ALIGN, size);
413 vring_desc_init_split(vr->desc, size);
416 * Disable device(host) interrupting guest
418 virtqueue_disable_intr(vq);
422 virtio_init_queue(struct rte_eth_dev *dev, uint16_t queue_idx)
424 char vq_name[VIRTQUEUE_MAX_NAME_SZ];
425 char vq_hdr_name[VIRTQUEUE_MAX_NAME_SZ];
426 const struct rte_memzone *mz = NULL, *hdr_mz = NULL;
427 unsigned int vq_size, size;
428 struct virtio_hw *hw = dev->data->dev_private;
429 struct virtnet_rx *rxvq = NULL;
430 struct virtnet_tx *txvq = NULL;
431 struct virtnet_ctl *cvq = NULL;
432 struct virtqueue *vq;
433 size_t sz_hdr_mz = 0;
434 void *sw_ring = NULL;
435 int queue_type = virtio_get_queue_type(hw, queue_idx);
437 int numa_node = dev->device->numa_node;
439 PMD_INIT_LOG(INFO, "setting up queue: %u on NUMA node %d",
440 queue_idx, numa_node);
443 * Read the virtqueue size from the Queue Size field
444 * Always power of 2 and if 0 virtqueue does not exist
446 vq_size = VIRTIO_OPS(hw)->get_queue_num(hw, queue_idx);
447 PMD_INIT_LOG(DEBUG, "vq_size: %u", vq_size);
449 PMD_INIT_LOG(ERR, "virtqueue does not exist");
453 if (!virtio_with_packed_queue(hw) && !rte_is_power_of_2(vq_size)) {
454 PMD_INIT_LOG(ERR, "split virtqueue size is not power of 2");
458 snprintf(vq_name, sizeof(vq_name), "port%d_vq%d",
459 dev->data->port_id, queue_idx);
461 size = RTE_ALIGN_CEIL(sizeof(*vq) +
462 vq_size * sizeof(struct vq_desc_extra),
463 RTE_CACHE_LINE_SIZE);
464 if (queue_type == VTNET_TQ) {
466 * For each xmit packet, allocate a virtio_net_hdr
467 * and indirect ring elements
469 sz_hdr_mz = vq_size * sizeof(struct virtio_tx_region);
470 } else if (queue_type == VTNET_CQ) {
471 /* Allocate a page for control vq command, data and status */
472 sz_hdr_mz = rte_mem_page_size();
475 vq = rte_zmalloc_socket(vq_name, size, RTE_CACHE_LINE_SIZE,
478 PMD_INIT_LOG(ERR, "can not allocate vq");
481 hw->vqs[queue_idx] = vq;
484 vq->vq_queue_index = queue_idx;
485 vq->vq_nentries = vq_size;
486 if (virtio_with_packed_queue(hw)) {
487 vq->vq_packed.used_wrap_counter = 1;
488 vq->vq_packed.cached_flags = VRING_PACKED_DESC_F_AVAIL;
489 vq->vq_packed.event_flags_shadow = 0;
490 if (queue_type == VTNET_RQ)
491 vq->vq_packed.cached_flags |= VRING_DESC_F_WRITE;
495 * Reserve a memzone for vring elements
497 size = vring_size(hw, vq_size, VIRTIO_VRING_ALIGN);
498 vq->vq_ring_size = RTE_ALIGN_CEIL(size, VIRTIO_VRING_ALIGN);
499 PMD_INIT_LOG(DEBUG, "vring_size: %d, rounded_vring_size: %d",
500 size, vq->vq_ring_size);
502 mz = rte_memzone_reserve_aligned(vq_name, vq->vq_ring_size,
503 numa_node, RTE_MEMZONE_IOVA_CONTIG,
506 if (rte_errno == EEXIST)
507 mz = rte_memzone_lookup(vq_name);
514 memset(mz->addr, 0, mz->len);
516 vq->vq_ring_mem = mz->iova;
517 vq->vq_ring_virt_mem = mz->addr;
518 PMD_INIT_LOG(DEBUG, "vq->vq_ring_mem: 0x%" PRIx64,
520 PMD_INIT_LOG(DEBUG, "vq->vq_ring_virt_mem: 0x%" PRIx64,
521 (uint64_t)(uintptr_t)mz->addr);
523 virtio_init_vring(vq);
526 snprintf(vq_hdr_name, sizeof(vq_hdr_name), "port%d_vq%d_hdr",
527 dev->data->port_id, queue_idx);
528 hdr_mz = rte_memzone_reserve_aligned(vq_hdr_name, sz_hdr_mz,
529 numa_node, RTE_MEMZONE_IOVA_CONTIG,
530 RTE_CACHE_LINE_SIZE);
531 if (hdr_mz == NULL) {
532 if (rte_errno == EEXIST)
533 hdr_mz = rte_memzone_lookup(vq_hdr_name);
534 if (hdr_mz == NULL) {
541 if (queue_type == VTNET_RQ) {
542 size_t sz_sw = (RTE_PMD_VIRTIO_RX_MAX_BURST + vq_size) *
543 sizeof(vq->sw_ring[0]);
545 sw_ring = rte_zmalloc_socket("sw_ring", sz_sw,
546 RTE_CACHE_LINE_SIZE, numa_node);
548 PMD_INIT_LOG(ERR, "can not allocate RX soft ring");
553 vq->sw_ring = sw_ring;
555 rxvq->port_id = dev->data->port_id;
557 } else if (queue_type == VTNET_TQ) {
559 txvq->port_id = dev->data->port_id;
561 txvq->virtio_net_hdr_mz = hdr_mz;
562 txvq->virtio_net_hdr_mem = hdr_mz->iova;
563 } else if (queue_type == VTNET_CQ) {
566 cvq->virtio_net_hdr_mz = hdr_mz;
567 cvq->virtio_net_hdr_mem = hdr_mz->iova;
568 memset(cvq->virtio_net_hdr_mz->addr, 0, rte_mem_page_size());
573 if (queue_type == VTNET_TQ) {
574 struct virtio_tx_region *txr;
578 memset(txr, 0, vq_size * sizeof(*txr));
579 for (i = 0; i < vq_size; i++) {
580 /* first indirect descriptor is always the tx header */
581 if (!virtio_with_packed_queue(hw)) {
582 struct vring_desc *start_dp = txr[i].tx_indir;
583 vring_desc_init_split(start_dp,
584 RTE_DIM(txr[i].tx_indir));
585 start_dp->addr = txvq->virtio_net_hdr_mem
587 + offsetof(struct virtio_tx_region,
589 start_dp->len = hw->vtnet_hdr_size;
590 start_dp->flags = VRING_DESC_F_NEXT;
592 struct vring_packed_desc *start_dp =
593 txr[i].tx_packed_indir;
594 vring_desc_init_indirect_packed(start_dp,
595 RTE_DIM(txr[i].tx_packed_indir));
596 start_dp->addr = txvq->virtio_net_hdr_mem
598 + offsetof(struct virtio_tx_region,
600 start_dp->len = hw->vtnet_hdr_size;
605 if (VIRTIO_OPS(hw)->setup_queue(hw, vq) < 0) {
606 PMD_INIT_LOG(ERR, "setup_queue failed");
617 rte_memzone_free(hdr_mz);
619 rte_memzone_free(mz);
627 virtio_free_queues(struct virtio_hw *hw)
629 uint16_t nr_vq = virtio_get_nr_vq(hw);
630 struct virtqueue *vq;
637 for (i = 0; i < nr_vq; i++) {
642 queue_type = virtio_get_queue_type(hw, i);
643 if (queue_type == VTNET_RQ) {
644 rte_free(vq->sw_ring);
645 rte_memzone_free(vq->rxq.mz);
646 } else if (queue_type == VTNET_TQ) {
647 rte_memzone_free(vq->txq.mz);
648 rte_memzone_free(vq->txq.virtio_net_hdr_mz);
650 rte_memzone_free(vq->cq.mz);
651 rte_memzone_free(vq->cq.virtio_net_hdr_mz);
663 virtio_alloc_queues(struct rte_eth_dev *dev)
665 struct virtio_hw *hw = dev->data->dev_private;
666 uint16_t nr_vq = virtio_get_nr_vq(hw);
670 hw->vqs = rte_zmalloc(NULL, sizeof(struct virtqueue *) * nr_vq, 0);
672 PMD_INIT_LOG(ERR, "failed to allocate vqs");
676 for (i = 0; i < nr_vq; i++) {
677 ret = virtio_init_queue(dev, i);
679 virtio_free_queues(hw);
687 static void virtio_queues_unbind_intr(struct rte_eth_dev *dev);
690 virtio_dev_close(struct rte_eth_dev *dev)
692 struct virtio_hw *hw = dev->data->dev_private;
693 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf;
695 PMD_INIT_LOG(DEBUG, "virtio_dev_close");
696 if (rte_eal_process_type() != RTE_PROC_PRIMARY)
704 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
705 VIRTIO_OPS(hw)->set_config_irq(hw, VIRTIO_MSI_NO_VECTOR);
707 virtio_queues_unbind_intr(dev);
709 if (intr_conf->lsc || intr_conf->rxq) {
710 virtio_intr_disable(dev);
711 rte_intr_efd_disable(dev->intr_handle);
712 rte_free(dev->intr_handle->intr_vec);
713 dev->intr_handle->intr_vec = NULL;
717 virtio_dev_free_mbufs(dev);
718 virtio_free_queues(hw);
720 return VIRTIO_OPS(hw)->dev_close(hw);
724 virtio_dev_promiscuous_enable(struct rte_eth_dev *dev)
726 struct virtio_hw *hw = dev->data->dev_private;
727 struct virtio_pmd_ctrl ctrl;
731 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
732 PMD_INIT_LOG(INFO, "host does not support rx control");
736 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
737 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
741 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
743 PMD_INIT_LOG(ERR, "Failed to enable promisc");
751 virtio_dev_promiscuous_disable(struct rte_eth_dev *dev)
753 struct virtio_hw *hw = dev->data->dev_private;
754 struct virtio_pmd_ctrl ctrl;
758 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
759 PMD_INIT_LOG(INFO, "host does not support rx control");
763 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
764 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
768 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
770 PMD_INIT_LOG(ERR, "Failed to disable promisc");
778 virtio_dev_allmulticast_enable(struct rte_eth_dev *dev)
780 struct virtio_hw *hw = dev->data->dev_private;
781 struct virtio_pmd_ctrl ctrl;
785 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
786 PMD_INIT_LOG(INFO, "host does not support rx control");
790 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
791 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
795 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
797 PMD_INIT_LOG(ERR, "Failed to enable allmulticast");
805 virtio_dev_allmulticast_disable(struct rte_eth_dev *dev)
807 struct virtio_hw *hw = dev->data->dev_private;
808 struct virtio_pmd_ctrl ctrl;
812 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
813 PMD_INIT_LOG(INFO, "host does not support rx control");
817 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
818 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
822 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
824 PMD_INIT_LOG(ERR, "Failed to disable allmulticast");
831 #define VLAN_TAG_LEN 4 /* 802.3ac tag (not DMA'd) */
833 virtio_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
835 struct virtio_hw *hw = dev->data->dev_private;
836 uint32_t ether_hdr_len = RTE_ETHER_HDR_LEN + VLAN_TAG_LEN +
838 uint32_t frame_size = mtu + ether_hdr_len;
839 uint32_t max_frame_size = hw->max_mtu + ether_hdr_len;
841 max_frame_size = RTE_MIN(max_frame_size, VIRTIO_MAX_RX_PKTLEN);
843 if (mtu < RTE_ETHER_MIN_MTU || frame_size > max_frame_size) {
844 PMD_INIT_LOG(ERR, "MTU should be between %d and %d",
845 RTE_ETHER_MIN_MTU, max_frame_size - ether_hdr_len);
852 virtio_dev_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id)
854 struct virtio_hw *hw = dev->data->dev_private;
855 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id];
856 struct virtqueue *vq = virtnet_rxq_to_vq(rxvq);
858 virtqueue_enable_intr(vq);
859 virtio_mb(hw->weak_barriers);
864 virtio_dev_rx_queue_intr_disable(struct rte_eth_dev *dev, uint16_t queue_id)
866 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id];
867 struct virtqueue *vq = virtnet_rxq_to_vq(rxvq);
869 virtqueue_disable_intr(vq);
874 * dev_ops for virtio, bare necessities for basic operation
876 static const struct eth_dev_ops virtio_eth_dev_ops = {
877 .dev_configure = virtio_dev_configure,
878 .dev_start = virtio_dev_start,
879 .dev_stop = virtio_dev_stop,
880 .dev_close = virtio_dev_close,
881 .promiscuous_enable = virtio_dev_promiscuous_enable,
882 .promiscuous_disable = virtio_dev_promiscuous_disable,
883 .allmulticast_enable = virtio_dev_allmulticast_enable,
884 .allmulticast_disable = virtio_dev_allmulticast_disable,
885 .mtu_set = virtio_mtu_set,
886 .dev_infos_get = virtio_dev_info_get,
887 .stats_get = virtio_dev_stats_get,
888 .xstats_get = virtio_dev_xstats_get,
889 .xstats_get_names = virtio_dev_xstats_get_names,
890 .stats_reset = virtio_dev_stats_reset,
891 .xstats_reset = virtio_dev_stats_reset,
892 .link_update = virtio_dev_link_update,
893 .vlan_offload_set = virtio_dev_vlan_offload_set,
894 .rx_queue_setup = virtio_dev_rx_queue_setup,
895 .rx_queue_intr_enable = virtio_dev_rx_queue_intr_enable,
896 .rx_queue_intr_disable = virtio_dev_rx_queue_intr_disable,
897 .rx_queue_release = virtio_dev_queue_release,
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,
909 * dev_ops for virtio-user in secondary processes, as we just have
910 * some limited supports currently.
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,
924 virtio_update_stats(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
928 for (i = 0; i < dev->data->nb_tx_queues; i++) {
929 const struct virtnet_tx *txvq = dev->data->tx_queues[i];
933 stats->opackets += txvq->stats.packets;
934 stats->obytes += txvq->stats.bytes;
936 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
937 stats->q_opackets[i] = txvq->stats.packets;
938 stats->q_obytes[i] = txvq->stats.bytes;
942 for (i = 0; i < dev->data->nb_rx_queues; i++) {
943 const struct virtnet_rx *rxvq = dev->data->rx_queues[i];
947 stats->ipackets += rxvq->stats.packets;
948 stats->ibytes += rxvq->stats.bytes;
949 stats->ierrors += rxvq->stats.errors;
951 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
952 stats->q_ipackets[i] = rxvq->stats.packets;
953 stats->q_ibytes[i] = rxvq->stats.bytes;
957 stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed;
960 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev,
961 struct rte_eth_xstat_name *xstats_names,
962 __rte_unused unsigned limit)
968 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS +
969 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS;
971 if (xstats_names != NULL) {
972 /* Note: limit checked in rte_eth_xstats_names() */
974 for (i = 0; i < dev->data->nb_rx_queues; i++) {
975 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
978 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) {
979 snprintf(xstats_names[count].name,
980 sizeof(xstats_names[count].name),
982 rte_virtio_rxq_stat_strings[t].name);
987 for (i = 0; i < dev->data->nb_tx_queues; i++) {
988 struct virtnet_tx *txvq = dev->data->tx_queues[i];
991 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) {
992 snprintf(xstats_names[count].name,
993 sizeof(xstats_names[count].name),
995 rte_virtio_txq_stat_strings[t].name);
1005 virtio_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats,
1011 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS +
1012 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS;
1017 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1018 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
1025 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) {
1026 xstats[count].value = *(uint64_t *)(((char *)rxvq) +
1027 rte_virtio_rxq_stat_strings[t].offset);
1028 xstats[count].id = count;
1033 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1034 struct virtnet_tx *txvq = dev->data->tx_queues[i];
1041 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) {
1042 xstats[count].value = *(uint64_t *)(((char *)txvq) +
1043 rte_virtio_txq_stat_strings[t].offset);
1044 xstats[count].id = count;
1053 virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
1055 virtio_update_stats(dev, stats);
1061 virtio_dev_stats_reset(struct rte_eth_dev *dev)
1065 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1066 struct virtnet_tx *txvq = dev->data->tx_queues[i];
1070 txvq->stats.packets = 0;
1071 txvq->stats.bytes = 0;
1072 txvq->stats.multicast = 0;
1073 txvq->stats.broadcast = 0;
1074 memset(txvq->stats.size_bins, 0,
1075 sizeof(txvq->stats.size_bins[0]) * 8);
1078 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1079 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
1083 rxvq->stats.packets = 0;
1084 rxvq->stats.bytes = 0;
1085 rxvq->stats.errors = 0;
1086 rxvq->stats.multicast = 0;
1087 rxvq->stats.broadcast = 0;
1088 memset(rxvq->stats.size_bins, 0,
1089 sizeof(rxvq->stats.size_bins[0]) * 8);
1096 virtio_set_hwaddr(struct virtio_hw *hw)
1098 virtio_write_dev_config(hw,
1099 offsetof(struct virtio_net_config, mac),
1100 &hw->mac_addr, RTE_ETHER_ADDR_LEN);
1104 virtio_get_hwaddr(struct virtio_hw *hw)
1106 if (virtio_with_feature(hw, VIRTIO_NET_F_MAC)) {
1107 virtio_read_dev_config(hw,
1108 offsetof(struct virtio_net_config, mac),
1109 &hw->mac_addr, RTE_ETHER_ADDR_LEN);
1111 rte_eth_random_addr(&hw->mac_addr[0]);
1112 virtio_set_hwaddr(hw);
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)
1121 struct virtio_pmd_ctrl ctrl;
1124 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
1125 PMD_DRV_LOG(INFO, "host does not support mac table");
1129 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
1130 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET;
1132 len[0] = uc->entries * RTE_ETHER_ADDR_LEN + sizeof(uc->entries);
1133 memcpy(ctrl.data, uc, len[0]);
1135 len[1] = mc->entries * RTE_ETHER_ADDR_LEN + sizeof(mc->entries);
1136 memcpy(ctrl.data + len[0], mc, len[1]);
1138 err = virtio_send_command(hw->cvq, &ctrl, len, 2);
1140 PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err);
1145 virtio_mac_addr_add(struct rte_eth_dev *dev, struct rte_ether_addr *mac_addr,
1146 uint32_t index, uint32_t vmdq __rte_unused)
1148 struct virtio_hw *hw = dev->data->dev_private;
1149 const struct rte_ether_addr *addrs = dev->data->mac_addrs;
1151 struct virtio_net_ctrl_mac *uc, *mc;
1153 if (index >= VIRTIO_MAX_MAC_ADDRS) {
1154 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
1158 uc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN +
1159 sizeof(uc->entries));
1161 mc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN +
1162 sizeof(mc->entries));
1165 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
1166 const struct rte_ether_addr *addr
1167 = (i == index) ? mac_addr : addrs + i;
1168 struct virtio_net_ctrl_mac *tbl
1169 = rte_is_multicast_ether_addr(addr) ? mc : uc;
1171 memcpy(&tbl->macs[tbl->entries++], addr, RTE_ETHER_ADDR_LEN);
1174 return virtio_mac_table_set(hw, uc, mc);
1178 virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
1180 struct virtio_hw *hw = dev->data->dev_private;
1181 struct rte_ether_addr *addrs = dev->data->mac_addrs;
1182 struct virtio_net_ctrl_mac *uc, *mc;
1185 if (index >= VIRTIO_MAX_MAC_ADDRS) {
1186 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
1190 uc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN +
1191 sizeof(uc->entries));
1193 mc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN +
1194 sizeof(mc->entries));
1197 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
1198 struct virtio_net_ctrl_mac *tbl;
1200 if (i == index || rte_is_zero_ether_addr(addrs + i))
1203 tbl = rte_is_multicast_ether_addr(addrs + i) ? mc : uc;
1204 memcpy(&tbl->macs[tbl->entries++], addrs + i,
1205 RTE_ETHER_ADDR_LEN);
1208 virtio_mac_table_set(hw, uc, mc);
1212 virtio_mac_addr_set(struct rte_eth_dev *dev, struct rte_ether_addr *mac_addr)
1214 struct virtio_hw *hw = dev->data->dev_private;
1216 memcpy(hw->mac_addr, mac_addr, RTE_ETHER_ADDR_LEN);
1218 /* Use atomic update if available */
1219 if (virtio_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
1220 struct virtio_pmd_ctrl ctrl;
1221 int len = RTE_ETHER_ADDR_LEN;
1223 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
1224 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET;
1226 memcpy(ctrl.data, mac_addr, RTE_ETHER_ADDR_LEN);
1227 return virtio_send_command(hw->cvq, &ctrl, &len, 1);
1230 if (!virtio_with_feature(hw, VIRTIO_NET_F_MAC))
1233 virtio_set_hwaddr(hw);
1238 virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
1240 struct virtio_hw *hw = dev->data->dev_private;
1241 struct virtio_pmd_ctrl ctrl;
1244 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN))
1247 ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN;
1248 ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL;
1249 memcpy(ctrl.data, &vlan_id, sizeof(vlan_id));
1250 len = sizeof(vlan_id);
1252 return virtio_send_command(hw->cvq, &ctrl, &len, 1);
1256 virtio_intr_unmask(struct rte_eth_dev *dev)
1258 struct virtio_hw *hw = dev->data->dev_private;
1260 if (rte_intr_ack(dev->intr_handle) < 0)
1263 if (VIRTIO_OPS(hw)->intr_detect)
1264 VIRTIO_OPS(hw)->intr_detect(hw);
1270 virtio_intr_enable(struct rte_eth_dev *dev)
1272 struct virtio_hw *hw = dev->data->dev_private;
1274 if (rte_intr_enable(dev->intr_handle) < 0)
1277 if (VIRTIO_OPS(hw)->intr_detect)
1278 VIRTIO_OPS(hw)->intr_detect(hw);
1284 virtio_intr_disable(struct rte_eth_dev *dev)
1286 struct virtio_hw *hw = dev->data->dev_private;
1288 if (rte_intr_disable(dev->intr_handle) < 0)
1291 if (VIRTIO_OPS(hw)->intr_detect)
1292 VIRTIO_OPS(hw)->intr_detect(hw);
1298 virtio_ethdev_negotiate_features(struct virtio_hw *hw, uint64_t req_features)
1300 uint64_t host_features;
1302 /* Prepare guest_features: feature that driver wants to support */
1303 PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %" PRIx64,
1306 /* Read device(host) feature bits */
1307 host_features = VIRTIO_OPS(hw)->get_features(hw);
1308 PMD_INIT_LOG(DEBUG, "host_features before negotiate = %" PRIx64,
1311 /* If supported, ensure MTU value is valid before acknowledging it. */
1312 if (host_features & req_features & (1ULL << VIRTIO_NET_F_MTU)) {
1313 struct virtio_net_config config;
1315 virtio_read_dev_config(hw,
1316 offsetof(struct virtio_net_config, mtu),
1317 &config.mtu, sizeof(config.mtu));
1319 if (config.mtu < RTE_ETHER_MIN_MTU)
1320 req_features &= ~(1ULL << VIRTIO_NET_F_MTU);
1324 * Negotiate features: Subset of device feature bits are written back
1325 * guest feature bits.
1327 hw->guest_features = req_features;
1328 hw->guest_features = virtio_negotiate_features(hw, host_features);
1329 PMD_INIT_LOG(DEBUG, "features after negotiate = %" PRIx64,
1330 hw->guest_features);
1332 if (VIRTIO_OPS(hw)->features_ok(hw) < 0)
1335 if (virtio_with_feature(hw, VIRTIO_F_VERSION_1)) {
1336 virtio_set_status(hw, VIRTIO_CONFIG_STATUS_FEATURES_OK);
1338 if (!(virtio_get_status(hw) & VIRTIO_CONFIG_STATUS_FEATURES_OK)) {
1339 PMD_INIT_LOG(ERR, "Failed to set FEATURES_OK status!");
1344 hw->req_guest_features = req_features;
1350 virtio_dev_pause(struct rte_eth_dev *dev)
1352 struct virtio_hw *hw = dev->data->dev_private;
1354 rte_spinlock_lock(&hw->state_lock);
1356 if (hw->started == 0) {
1357 /* Device is just stopped. */
1358 rte_spinlock_unlock(&hw->state_lock);
1363 * Prevent the worker threads from touching queues to avoid contention,
1364 * 1 ms should be enough for the ongoing Tx function to finish.
1371 * Recover hw state to let the worker threads continue.
1374 virtio_dev_resume(struct rte_eth_dev *dev)
1376 struct virtio_hw *hw = dev->data->dev_private;
1379 rte_spinlock_unlock(&hw->state_lock);
1383 * Should be called only after device is paused.
1386 virtio_inject_pkts(struct rte_eth_dev *dev, struct rte_mbuf **tx_pkts,
1389 struct virtio_hw *hw = dev->data->dev_private;
1390 struct virtnet_tx *txvq = dev->data->tx_queues[0];
1393 hw->inject_pkts = tx_pkts;
1394 ret = dev->tx_pkt_burst(txvq, tx_pkts, nb_pkts);
1395 hw->inject_pkts = NULL;
1401 virtio_notify_peers(struct rte_eth_dev *dev)
1403 struct virtio_hw *hw = dev->data->dev_private;
1404 struct virtnet_rx *rxvq;
1405 struct rte_mbuf *rarp_mbuf;
1407 if (!dev->data->rx_queues)
1410 rxvq = dev->data->rx_queues[0];
1414 rarp_mbuf = rte_net_make_rarp_packet(rxvq->mpool,
1415 (struct rte_ether_addr *)hw->mac_addr);
1416 if (rarp_mbuf == NULL) {
1417 PMD_DRV_LOG(ERR, "failed to make RARP packet.");
1421 /* If virtio port just stopped, no need to send RARP */
1422 if (virtio_dev_pause(dev) < 0) {
1423 rte_pktmbuf_free(rarp_mbuf);
1427 virtio_inject_pkts(dev, &rarp_mbuf, 1);
1428 virtio_dev_resume(dev);
1432 virtio_ack_link_announce(struct rte_eth_dev *dev)
1434 struct virtio_hw *hw = dev->data->dev_private;
1435 struct virtio_pmd_ctrl ctrl;
1437 ctrl.hdr.class = VIRTIO_NET_CTRL_ANNOUNCE;
1438 ctrl.hdr.cmd = VIRTIO_NET_CTRL_ANNOUNCE_ACK;
1440 virtio_send_command(hw->cvq, &ctrl, NULL, 0);
1444 * Process virtio config changed interrupt. Call the callback
1445 * if link state changed, generate gratuitous RARP packet if
1446 * the status indicates an ANNOUNCE.
1449 virtio_interrupt_handler(void *param)
1451 struct rte_eth_dev *dev = param;
1452 struct virtio_hw *hw = dev->data->dev_private;
1456 /* Read interrupt status which clears interrupt */
1457 isr = virtio_get_isr(hw);
1458 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr);
1460 if (virtio_intr_unmask(dev) < 0)
1461 PMD_DRV_LOG(ERR, "interrupt enable failed");
1463 if (isr & VIRTIO_ISR_CONFIG) {
1464 if (virtio_dev_link_update(dev, 0) == 0)
1465 rte_eth_dev_callback_process(dev,
1466 RTE_ETH_EVENT_INTR_LSC,
1469 if (virtio_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1470 virtio_read_dev_config(hw,
1471 offsetof(struct virtio_net_config, status),
1472 &status, sizeof(status));
1473 if (status & VIRTIO_NET_S_ANNOUNCE) {
1474 virtio_notify_peers(dev);
1476 virtio_ack_link_announce(dev);
1482 /* set rx and tx handlers according to what is supported */
1484 set_rxtx_funcs(struct rte_eth_dev *eth_dev)
1486 struct virtio_hw *hw = eth_dev->data->dev_private;
1488 eth_dev->tx_pkt_prepare = virtio_xmit_pkts_prepare;
1489 if (virtio_with_packed_queue(hw)) {
1491 "virtio: using packed ring %s Tx path on port %u",
1492 hw->use_vec_tx ? "vectorized" : "standard",
1493 eth_dev->data->port_id);
1495 eth_dev->tx_pkt_burst = virtio_xmit_pkts_packed_vec;
1497 eth_dev->tx_pkt_burst = virtio_xmit_pkts_packed;
1499 if (hw->use_inorder_tx) {
1500 PMD_INIT_LOG(INFO, "virtio: using inorder Tx path on port %u",
1501 eth_dev->data->port_id);
1502 eth_dev->tx_pkt_burst = virtio_xmit_pkts_inorder;
1504 PMD_INIT_LOG(INFO, "virtio: using standard Tx path on port %u",
1505 eth_dev->data->port_id);
1506 eth_dev->tx_pkt_burst = virtio_xmit_pkts;
1510 if (virtio_with_packed_queue(hw)) {
1511 if (hw->use_vec_rx) {
1513 "virtio: using packed ring vectorized Rx path on port %u",
1514 eth_dev->data->port_id);
1515 eth_dev->rx_pkt_burst =
1516 &virtio_recv_pkts_packed_vec;
1517 } else if (virtio_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
1519 "virtio: using packed ring mergeable buffer Rx path on port %u",
1520 eth_dev->data->port_id);
1521 eth_dev->rx_pkt_burst =
1522 &virtio_recv_mergeable_pkts_packed;
1525 "virtio: using packed ring standard Rx path on port %u",
1526 eth_dev->data->port_id);
1527 eth_dev->rx_pkt_burst = &virtio_recv_pkts_packed;
1530 if (hw->use_vec_rx) {
1531 PMD_INIT_LOG(INFO, "virtio: using vectorized Rx path on port %u",
1532 eth_dev->data->port_id);
1533 eth_dev->rx_pkt_burst = virtio_recv_pkts_vec;
1534 } else if (hw->use_inorder_rx) {
1536 "virtio: using inorder Rx path on port %u",
1537 eth_dev->data->port_id);
1538 eth_dev->rx_pkt_burst = &virtio_recv_pkts_inorder;
1539 } else if (virtio_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
1541 "virtio: using mergeable buffer Rx path on port %u",
1542 eth_dev->data->port_id);
1543 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts;
1545 PMD_INIT_LOG(INFO, "virtio: using standard Rx path on port %u",
1546 eth_dev->data->port_id);
1547 eth_dev->rx_pkt_burst = &virtio_recv_pkts;
1553 /* Only support 1:1 queue/interrupt mapping so far.
1554 * TODO: support n:1 queue/interrupt mapping when there are limited number of
1555 * interrupt vectors (<N+1).
1558 virtio_queues_bind_intr(struct rte_eth_dev *dev)
1561 struct virtio_hw *hw = dev->data->dev_private;
1563 PMD_INIT_LOG(INFO, "queue/interrupt binding");
1564 for (i = 0; i < dev->data->nb_rx_queues; ++i) {
1565 dev->intr_handle->intr_vec[i] = i + 1;
1566 if (VIRTIO_OPS(hw)->set_queue_irq(hw, hw->vqs[i * 2], i + 1) ==
1567 VIRTIO_MSI_NO_VECTOR) {
1568 PMD_DRV_LOG(ERR, "failed to set queue vector");
1577 virtio_queues_unbind_intr(struct rte_eth_dev *dev)
1580 struct virtio_hw *hw = dev->data->dev_private;
1582 PMD_INIT_LOG(INFO, "queue/interrupt unbinding");
1583 for (i = 0; i < dev->data->nb_rx_queues; ++i)
1584 VIRTIO_OPS(hw)->set_queue_irq(hw,
1585 hw->vqs[i * VTNET_CQ],
1586 VIRTIO_MSI_NO_VECTOR);
1590 virtio_configure_intr(struct rte_eth_dev *dev)
1592 struct virtio_hw *hw = dev->data->dev_private;
1594 if (!rte_intr_cap_multiple(dev->intr_handle)) {
1595 PMD_INIT_LOG(ERR, "Multiple intr vector not supported");
1599 if (rte_intr_efd_enable(dev->intr_handle, dev->data->nb_rx_queues)) {
1600 PMD_INIT_LOG(ERR, "Fail to create eventfd");
1604 if (!dev->intr_handle->intr_vec) {
1605 dev->intr_handle->intr_vec =
1606 rte_zmalloc("intr_vec",
1607 hw->max_queue_pairs * sizeof(int), 0);
1608 if (!dev->intr_handle->intr_vec) {
1609 PMD_INIT_LOG(ERR, "Failed to allocate %u rxq vectors",
1610 hw->max_queue_pairs);
1615 /* Re-register callback to update max_intr */
1616 rte_intr_callback_unregister(dev->intr_handle,
1617 virtio_interrupt_handler,
1619 rte_intr_callback_register(dev->intr_handle,
1620 virtio_interrupt_handler,
1623 /* DO NOT try to remove this! This function will enable msix, or QEMU
1624 * will encounter SIGSEGV when DRIVER_OK is sent.
1625 * And for legacy devices, this should be done before queue/vec binding
1626 * to change the config size from 20 to 24, or VIRTIO_MSI_QUEUE_VECTOR
1627 * (22) will be ignored.
1629 if (virtio_intr_enable(dev) < 0) {
1630 PMD_DRV_LOG(ERR, "interrupt enable failed");
1634 if (virtio_queues_bind_intr(dev) < 0) {
1635 PMD_INIT_LOG(ERR, "Failed to bind queue/interrupt");
1641 #define DUPLEX_UNKNOWN 0xff
1642 /* reset device and renegotiate features if needed */
1644 virtio_init_device(struct rte_eth_dev *eth_dev, uint64_t req_features)
1646 struct virtio_hw *hw = eth_dev->data->dev_private;
1647 struct virtio_net_config *config;
1648 struct virtio_net_config local_config;
1651 /* Reset the device although not necessary at startup */
1655 virtio_dev_free_mbufs(eth_dev);
1656 virtio_free_queues(hw);
1659 /* Tell the host we've noticed this device. */
1660 virtio_set_status(hw, VIRTIO_CONFIG_STATUS_ACK);
1662 /* Tell the host we've known how to drive the device. */
1663 virtio_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER);
1664 if (virtio_ethdev_negotiate_features(hw, req_features) < 0)
1667 hw->weak_barriers = !virtio_with_feature(hw, VIRTIO_F_ORDER_PLATFORM);
1669 /* If host does not support both status and MSI-X then disable LSC */
1670 if (virtio_with_feature(hw, VIRTIO_NET_F_STATUS) && hw->intr_lsc)
1671 eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC;
1673 eth_dev->data->dev_flags &= ~RTE_ETH_DEV_INTR_LSC;
1675 eth_dev->data->dev_flags |= RTE_ETH_DEV_AUTOFILL_QUEUE_XSTATS;
1677 /* Setting up rx_header size for the device */
1678 if (virtio_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF) ||
1679 virtio_with_feature(hw, VIRTIO_F_VERSION_1) ||
1680 virtio_with_packed_queue(hw))
1681 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf);
1683 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr);
1685 /* Copy the permanent MAC address to: virtio_hw */
1686 virtio_get_hwaddr(hw);
1687 rte_ether_addr_copy((struct rte_ether_addr *)hw->mac_addr,
1688 ð_dev->data->mac_addrs[0]);
1690 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1691 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2],
1692 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]);
1694 if (hw->speed == ETH_SPEED_NUM_UNKNOWN) {
1695 if (virtio_with_feature(hw, VIRTIO_NET_F_SPEED_DUPLEX)) {
1696 config = &local_config;
1697 virtio_read_dev_config(hw,
1698 offsetof(struct virtio_net_config, speed),
1699 &config->speed, sizeof(config->speed));
1700 virtio_read_dev_config(hw,
1701 offsetof(struct virtio_net_config, duplex),
1702 &config->duplex, sizeof(config->duplex));
1703 hw->speed = config->speed;
1704 hw->duplex = config->duplex;
1707 if (hw->duplex == DUPLEX_UNKNOWN)
1708 hw->duplex = ETH_LINK_FULL_DUPLEX;
1709 PMD_INIT_LOG(DEBUG, "link speed = %d, duplex = %d",
1710 hw->speed, hw->duplex);
1711 if (virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) {
1712 config = &local_config;
1714 virtio_read_dev_config(hw,
1715 offsetof(struct virtio_net_config, mac),
1716 &config->mac, sizeof(config->mac));
1718 if (virtio_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1719 virtio_read_dev_config(hw,
1720 offsetof(struct virtio_net_config, status),
1721 &config->status, sizeof(config->status));
1724 "VIRTIO_NET_F_STATUS is not supported");
1728 if (virtio_with_feature(hw, VIRTIO_NET_F_MQ)) {
1729 virtio_read_dev_config(hw,
1730 offsetof(struct virtio_net_config, max_virtqueue_pairs),
1731 &config->max_virtqueue_pairs,
1732 sizeof(config->max_virtqueue_pairs));
1735 "VIRTIO_NET_F_MQ is not supported");
1736 config->max_virtqueue_pairs = 1;
1739 hw->max_queue_pairs = config->max_virtqueue_pairs;
1741 if (virtio_with_feature(hw, VIRTIO_NET_F_MTU)) {
1742 virtio_read_dev_config(hw,
1743 offsetof(struct virtio_net_config, mtu),
1745 sizeof(config->mtu));
1748 * MTU value has already been checked at negotiation
1749 * time, but check again in case it has changed since
1750 * then, which should not happen.
1752 if (config->mtu < RTE_ETHER_MIN_MTU) {
1753 PMD_INIT_LOG(ERR, "invalid max MTU value (%u)",
1758 hw->max_mtu = config->mtu;
1759 /* Set initial MTU to maximum one supported by vhost */
1760 eth_dev->data->mtu = config->mtu;
1763 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - RTE_ETHER_HDR_LEN -
1764 VLAN_TAG_LEN - hw->vtnet_hdr_size;
1767 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d",
1768 config->max_virtqueue_pairs);
1769 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status);
1771 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1772 config->mac[0], config->mac[1],
1773 config->mac[2], config->mac[3],
1774 config->mac[4], config->mac[5]);
1776 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=1");
1777 hw->max_queue_pairs = 1;
1778 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - RTE_ETHER_HDR_LEN -
1779 VLAN_TAG_LEN - hw->vtnet_hdr_size;
1782 ret = virtio_alloc_queues(eth_dev);
1786 if (eth_dev->data->dev_conf.intr_conf.rxq) {
1787 if (virtio_configure_intr(eth_dev) < 0) {
1788 PMD_INIT_LOG(ERR, "failed to configure interrupt");
1789 virtio_free_queues(hw);
1794 virtio_reinit_complete(hw);
1800 * This function is based on probe() function in virtio_pci.c
1801 * It returns 0 on success.
1804 eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
1806 struct virtio_hw *hw = eth_dev->data->dev_private;
1807 uint32_t speed = ETH_SPEED_NUM_UNKNOWN;
1811 if (sizeof(struct virtio_net_hdr_mrg_rxbuf) > RTE_PKTMBUF_HEADROOM) {
1813 "Not sufficient headroom required = %d, avail = %d",
1814 (int)sizeof(struct virtio_net_hdr_mrg_rxbuf),
1815 RTE_PKTMBUF_HEADROOM);
1820 eth_dev->dev_ops = &virtio_eth_dev_ops;
1821 eth_dev->rx_descriptor_done = virtio_dev_rx_queue_done;
1823 if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
1824 set_rxtx_funcs(eth_dev);
1828 ret = virtio_dev_devargs_parse(eth_dev->device->devargs, &speed, &vectorized);
1833 /* Allocate memory for storing MAC addresses */
1834 eth_dev->data->mac_addrs = rte_zmalloc("virtio",
1835 VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN, 0);
1836 if (eth_dev->data->mac_addrs == NULL) {
1838 "Failed to allocate %d bytes needed to store MAC addresses",
1839 VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN);
1843 rte_spinlock_init(&hw->state_lock);
1845 /* reset device and negotiate default features */
1846 ret = virtio_init_device(eth_dev, VIRTIO_PMD_DEFAULT_GUEST_FEATURES);
1848 goto err_virtio_init;
1851 if (!virtio_with_packed_queue(hw)) {
1854 #if defined(CC_AVX512_SUPPORT) || defined(RTE_ARCH_ARM)
1859 "building environment do not support packed ring vectorized");
1869 rte_free(eth_dev->data->mac_addrs);
1870 eth_dev->data->mac_addrs = NULL;
1875 virtio_dev_speed_capa_get(uint32_t speed)
1878 case ETH_SPEED_NUM_10G:
1879 return ETH_LINK_SPEED_10G;
1880 case ETH_SPEED_NUM_20G:
1881 return ETH_LINK_SPEED_20G;
1882 case ETH_SPEED_NUM_25G:
1883 return ETH_LINK_SPEED_25G;
1884 case ETH_SPEED_NUM_40G:
1885 return ETH_LINK_SPEED_40G;
1886 case ETH_SPEED_NUM_50G:
1887 return ETH_LINK_SPEED_50G;
1888 case ETH_SPEED_NUM_56G:
1889 return ETH_LINK_SPEED_56G;
1890 case ETH_SPEED_NUM_100G:
1891 return ETH_LINK_SPEED_100G;
1892 case ETH_SPEED_NUM_200G:
1893 return ETH_LINK_SPEED_200G;
1899 static int vectorized_check_handler(__rte_unused const char *key,
1900 const char *value, void *ret_val)
1902 if (strcmp(value, "1") == 0)
1903 *(int *)ret_val = 1;
1905 *(int *)ret_val = 0;
1910 #define VIRTIO_ARG_SPEED "speed"
1911 #define VIRTIO_ARG_VECTORIZED "vectorized"
1914 link_speed_handler(const char *key __rte_unused,
1915 const char *value, void *ret_val)
1918 if (!value || !ret_val)
1920 val = strtoul(value, NULL, 0);
1921 /* validate input */
1922 if (virtio_dev_speed_capa_get(val) == 0)
1924 *(uint32_t *)ret_val = val;
1931 virtio_dev_devargs_parse(struct rte_devargs *devargs, uint32_t *speed, int *vectorized)
1933 struct rte_kvargs *kvlist;
1936 if (devargs == NULL)
1939 kvlist = rte_kvargs_parse(devargs->args, NULL);
1940 if (kvlist == NULL) {
1941 PMD_INIT_LOG(ERR, "error when parsing param");
1945 if (speed && rte_kvargs_count(kvlist, VIRTIO_ARG_SPEED) == 1) {
1946 ret = rte_kvargs_process(kvlist,
1948 link_speed_handler, speed);
1950 PMD_INIT_LOG(ERR, "Failed to parse %s",
1957 rte_kvargs_count(kvlist, VIRTIO_ARG_VECTORIZED) == 1) {
1958 ret = rte_kvargs_process(kvlist,
1959 VIRTIO_ARG_VECTORIZED,
1960 vectorized_check_handler, vectorized);
1962 PMD_INIT_LOG(ERR, "Failed to parse %s",
1963 VIRTIO_ARG_VECTORIZED);
1969 rte_kvargs_free(kvlist);
1974 rx_offload_enabled(struct virtio_hw *hw)
1976 return virtio_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM) ||
1977 virtio_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) ||
1978 virtio_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6);
1982 tx_offload_enabled(struct virtio_hw *hw)
1984 return virtio_with_feature(hw, VIRTIO_NET_F_CSUM) ||
1985 virtio_with_feature(hw, VIRTIO_NET_F_HOST_TSO4) ||
1986 virtio_with_feature(hw, VIRTIO_NET_F_HOST_TSO6);
1990 * Configure virtio device
1991 * It returns 0 on success.
1994 virtio_dev_configure(struct rte_eth_dev *dev)
1996 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
1997 const struct rte_eth_txmode *txmode = &dev->data->dev_conf.txmode;
1998 struct virtio_hw *hw = dev->data->dev_private;
1999 uint32_t ether_hdr_len = RTE_ETHER_HDR_LEN + VLAN_TAG_LEN +
2001 uint64_t rx_offloads = rxmode->offloads;
2002 uint64_t tx_offloads = txmode->offloads;
2003 uint64_t req_features;
2006 PMD_INIT_LOG(DEBUG, "configure");
2007 req_features = VIRTIO_PMD_DEFAULT_GUEST_FEATURES;
2009 if (rxmode->mq_mode != ETH_MQ_RX_NONE) {
2011 "Unsupported Rx multi queue mode %d",
2016 if (txmode->mq_mode != ETH_MQ_TX_NONE) {
2018 "Unsupported Tx multi queue mode %d",
2023 if (dev->data->dev_conf.intr_conf.rxq) {
2024 ret = virtio_init_device(dev, hw->req_guest_features);
2029 if (rxmode->max_rx_pkt_len > hw->max_mtu + ether_hdr_len)
2030 req_features &= ~(1ULL << VIRTIO_NET_F_MTU);
2032 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM |
2033 DEV_RX_OFFLOAD_TCP_CKSUM))
2034 req_features |= (1ULL << VIRTIO_NET_F_GUEST_CSUM);
2036 if (rx_offloads & DEV_RX_OFFLOAD_TCP_LRO)
2038 (1ULL << VIRTIO_NET_F_GUEST_TSO4) |
2039 (1ULL << VIRTIO_NET_F_GUEST_TSO6);
2041 if (tx_offloads & (DEV_TX_OFFLOAD_UDP_CKSUM |
2042 DEV_TX_OFFLOAD_TCP_CKSUM))
2043 req_features |= (1ULL << VIRTIO_NET_F_CSUM);
2045 if (tx_offloads & DEV_TX_OFFLOAD_TCP_TSO)
2047 (1ULL << VIRTIO_NET_F_HOST_TSO4) |
2048 (1ULL << VIRTIO_NET_F_HOST_TSO6);
2050 /* if request features changed, reinit the device */
2051 if (req_features != hw->req_guest_features) {
2052 ret = virtio_init_device(dev, req_features);
2057 if ((rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM |
2058 DEV_RX_OFFLOAD_TCP_CKSUM)) &&
2059 !virtio_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM)) {
2061 "rx checksum not available on this host");
2065 if ((rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) &&
2066 (!virtio_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) ||
2067 !virtio_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6))) {
2069 "Large Receive Offload not available on this host");
2073 /* start control queue */
2074 if (virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VQ))
2075 virtio_dev_cq_start(dev);
2077 if (rx_offloads & DEV_RX_OFFLOAD_VLAN_STRIP)
2080 if ((rx_offloads & DEV_RX_OFFLOAD_VLAN_FILTER) &&
2081 !virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
2083 "vlan filtering not available on this host");
2087 hw->has_tx_offload = tx_offload_enabled(hw);
2088 hw->has_rx_offload = rx_offload_enabled(hw);
2090 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
2091 /* Enable vector (0) for Link State Intrerrupt */
2092 if (VIRTIO_OPS(hw)->set_config_irq(hw, 0) ==
2093 VIRTIO_MSI_NO_VECTOR) {
2094 PMD_DRV_LOG(ERR, "failed to set config vector");
2098 if (virtio_with_packed_queue(hw)) {
2099 #if defined(RTE_ARCH_X86_64) && defined(CC_AVX512_SUPPORT)
2100 if ((hw->use_vec_rx || hw->use_vec_tx) &&
2101 (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F) ||
2102 !virtio_with_feature(hw, VIRTIO_F_IN_ORDER) ||
2103 !virtio_with_feature(hw, VIRTIO_F_VERSION_1) ||
2104 rte_vect_get_max_simd_bitwidth() < RTE_VECT_SIMD_512)) {
2106 "disabled packed ring vectorized path for requirements not met");
2110 #elif defined(RTE_ARCH_ARM)
2111 if ((hw->use_vec_rx || hw->use_vec_tx) &&
2112 (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON) ||
2113 !virtio_with_feature(hw, VIRTIO_F_IN_ORDER) ||
2114 !virtio_with_feature(hw, VIRTIO_F_VERSION_1) ||
2115 rte_vect_get_max_simd_bitwidth() < RTE_VECT_SIMD_128)) {
2117 "disabled packed ring vectorized path for requirements not met");
2126 if (hw->use_vec_rx) {
2127 if (virtio_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
2129 "disabled packed ring vectorized rx for mrg_rxbuf enabled");
2133 if (rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) {
2135 "disabled packed ring vectorized rx for TCP_LRO enabled");
2140 if (virtio_with_feature(hw, VIRTIO_F_IN_ORDER)) {
2141 hw->use_inorder_tx = 1;
2142 hw->use_inorder_rx = 1;
2146 if (hw->use_vec_rx) {
2147 #if defined RTE_ARCH_ARM
2148 if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON)) {
2150 "disabled split ring vectorized path for requirement not met");
2154 if (virtio_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
2156 "disabled split ring vectorized rx for mrg_rxbuf enabled");
2160 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM |
2161 DEV_RX_OFFLOAD_TCP_CKSUM |
2162 DEV_RX_OFFLOAD_TCP_LRO |
2163 DEV_RX_OFFLOAD_VLAN_STRIP)) {
2165 "disabled split ring vectorized rx for offloading enabled");
2169 if (rte_vect_get_max_simd_bitwidth() < RTE_VECT_SIMD_128) {
2171 "disabled split ring vectorized rx, max SIMD bitwidth too low");
2182 virtio_dev_start(struct rte_eth_dev *dev)
2184 uint16_t nb_queues, i;
2185 struct virtqueue *vq;
2186 struct virtio_hw *hw = dev->data->dev_private;
2189 /* Finish the initialization of the queues */
2190 for (i = 0; i < dev->data->nb_rx_queues; i++) {
2191 ret = virtio_dev_rx_queue_setup_finish(dev, i);
2195 for (i = 0; i < dev->data->nb_tx_queues; i++) {
2196 ret = virtio_dev_tx_queue_setup_finish(dev, i);
2201 /* check if lsc interrupt feature is enabled */
2202 if (dev->data->dev_conf.intr_conf.lsc) {
2203 if (!(dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)) {
2204 PMD_DRV_LOG(ERR, "link status not supported by host");
2209 /* Enable uio/vfio intr/eventfd mapping: althrough we already did that
2210 * in device configure, but it could be unmapped when device is
2213 if (dev->data->dev_conf.intr_conf.lsc ||
2214 dev->data->dev_conf.intr_conf.rxq) {
2215 virtio_intr_disable(dev);
2217 /* Setup interrupt callback */
2218 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
2219 rte_intr_callback_register(dev->intr_handle,
2220 virtio_interrupt_handler,
2223 if (virtio_intr_enable(dev) < 0) {
2224 PMD_DRV_LOG(ERR, "interrupt enable failed");
2229 /*Notify the backend
2230 *Otherwise the tap backend might already stop its queue due to fullness.
2231 *vhost backend will have no chance to be waked up
2233 nb_queues = RTE_MAX(dev->data->nb_rx_queues, dev->data->nb_tx_queues);
2234 if (hw->max_queue_pairs > 1) {
2235 if (virtio_set_multiple_queues(dev, nb_queues) != 0)
2239 PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues);
2241 for (i = 0; i < dev->data->nb_rx_queues; i++) {
2242 vq = virtnet_rxq_to_vq(dev->data->rx_queues[i]);
2243 /* Flush the old packets */
2244 virtqueue_rxvq_flush(vq);
2245 virtqueue_notify(vq);
2248 for (i = 0; i < dev->data->nb_tx_queues; i++) {
2249 vq = virtnet_txq_to_vq(dev->data->tx_queues[i]);
2250 virtqueue_notify(vq);
2253 PMD_INIT_LOG(DEBUG, "Notified backend at initialization");
2255 for (i = 0; i < dev->data->nb_rx_queues; i++) {
2256 vq = virtnet_rxq_to_vq(dev->data->rx_queues[i]);
2260 for (i = 0; i < dev->data->nb_tx_queues; i++) {
2261 vq = virtnet_txq_to_vq(dev->data->tx_queues[i]);
2265 set_rxtx_funcs(dev);
2268 /* Initialize Link state */
2269 virtio_dev_link_update(dev, 0);
2274 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev)
2276 struct virtio_hw *hw = dev->data->dev_private;
2277 uint16_t nr_vq = virtio_get_nr_vq(hw);
2278 const char *type __rte_unused;
2279 unsigned int i, mbuf_num = 0;
2280 struct virtqueue *vq;
2281 struct rte_mbuf *buf;
2284 if (hw->vqs == NULL)
2287 for (i = 0; i < nr_vq; i++) {
2292 queue_type = virtio_get_queue_type(hw, i);
2293 if (queue_type == VTNET_RQ)
2295 else if (queue_type == VTNET_TQ)
2301 "Before freeing %s[%d] used and unused buf",
2305 while ((buf = virtqueue_detach_unused(vq)) != NULL) {
2306 rte_pktmbuf_free(buf);
2311 "After freeing %s[%d] used and unused buf",
2316 PMD_INIT_LOG(DEBUG, "%d mbufs freed", mbuf_num);
2320 * Stop device: disable interrupt and mark link down
2323 virtio_dev_stop(struct rte_eth_dev *dev)
2325 struct virtio_hw *hw = dev->data->dev_private;
2326 struct rte_eth_link link;
2327 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf;
2329 PMD_INIT_LOG(DEBUG, "stop");
2330 dev->data->dev_started = 0;
2332 rte_spinlock_lock(&hw->state_lock);
2337 if (intr_conf->lsc || intr_conf->rxq) {
2338 virtio_intr_disable(dev);
2340 /* Reset interrupt callback */
2341 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) {
2342 rte_intr_callback_unregister(dev->intr_handle,
2343 virtio_interrupt_handler,
2348 memset(&link, 0, sizeof(link));
2349 rte_eth_linkstatus_set(dev, &link);
2351 rte_spinlock_unlock(&hw->state_lock);
2357 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete)
2359 struct rte_eth_link link;
2361 struct virtio_hw *hw = dev->data->dev_private;
2363 memset(&link, 0, sizeof(link));
2364 link.link_duplex = hw->duplex;
2365 link.link_speed = hw->speed;
2366 link.link_autoneg = ETH_LINK_AUTONEG;
2369 link.link_status = ETH_LINK_DOWN;
2370 link.link_speed = ETH_SPEED_NUM_NONE;
2371 } else if (virtio_with_feature(hw, VIRTIO_NET_F_STATUS)) {
2372 PMD_INIT_LOG(DEBUG, "Get link status from hw");
2373 virtio_read_dev_config(hw,
2374 offsetof(struct virtio_net_config, status),
2375 &status, sizeof(status));
2376 if ((status & VIRTIO_NET_S_LINK_UP) == 0) {
2377 link.link_status = ETH_LINK_DOWN;
2378 link.link_speed = ETH_SPEED_NUM_NONE;
2379 PMD_INIT_LOG(DEBUG, "Port %d is down",
2380 dev->data->port_id);
2382 link.link_status = ETH_LINK_UP;
2383 PMD_INIT_LOG(DEBUG, "Port %d is up",
2384 dev->data->port_id);
2387 link.link_status = ETH_LINK_UP;
2390 return rte_eth_linkstatus_set(dev, &link);
2394 virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask)
2396 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
2397 struct virtio_hw *hw = dev->data->dev_private;
2398 uint64_t offloads = rxmode->offloads;
2400 if (mask & ETH_VLAN_FILTER_MASK) {
2401 if ((offloads & DEV_RX_OFFLOAD_VLAN_FILTER) &&
2402 !virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
2405 "vlan filtering not available on this host");
2411 if (mask & ETH_VLAN_STRIP_MASK)
2412 hw->vlan_strip = !!(offloads & DEV_RX_OFFLOAD_VLAN_STRIP);
2418 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
2420 uint64_t tso_mask, host_features;
2421 struct virtio_hw *hw = dev->data->dev_private;
2422 dev_info->speed_capa = virtio_dev_speed_capa_get(hw->speed);
2424 dev_info->max_rx_queues =
2425 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_RX_QUEUES);
2426 dev_info->max_tx_queues =
2427 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_TX_QUEUES);
2428 dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE;
2429 dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN;
2430 dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS;
2432 host_features = VIRTIO_OPS(hw)->get_features(hw);
2433 dev_info->rx_offload_capa = DEV_RX_OFFLOAD_VLAN_STRIP;
2434 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_JUMBO_FRAME;
2435 if (host_features & (1ULL << VIRTIO_NET_F_GUEST_CSUM)) {
2436 dev_info->rx_offload_capa |=
2437 DEV_RX_OFFLOAD_TCP_CKSUM |
2438 DEV_RX_OFFLOAD_UDP_CKSUM;
2440 if (host_features & (1ULL << VIRTIO_NET_F_CTRL_VLAN))
2441 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_VLAN_FILTER;
2442 tso_mask = (1ULL << VIRTIO_NET_F_GUEST_TSO4) |
2443 (1ULL << VIRTIO_NET_F_GUEST_TSO6);
2444 if ((host_features & tso_mask) == tso_mask)
2445 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_TCP_LRO;
2447 dev_info->tx_offload_capa = DEV_TX_OFFLOAD_MULTI_SEGS |
2448 DEV_TX_OFFLOAD_VLAN_INSERT;
2449 if (host_features & (1ULL << VIRTIO_NET_F_CSUM)) {
2450 dev_info->tx_offload_capa |=
2451 DEV_TX_OFFLOAD_UDP_CKSUM |
2452 DEV_TX_OFFLOAD_TCP_CKSUM;
2454 tso_mask = (1ULL << VIRTIO_NET_F_HOST_TSO4) |
2455 (1ULL << VIRTIO_NET_F_HOST_TSO6);
2456 if ((host_features & tso_mask) == tso_mask)
2457 dev_info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO;
2463 * It enables testpmd to collect per queue stats.
2466 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev,
2467 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx,
2468 __rte_unused uint8_t is_rx)
2473 RTE_LOG_REGISTER(virtio_logtype_init, pmd.net.virtio.init, NOTICE);
2474 RTE_LOG_REGISTER(virtio_logtype_driver, pmd.net.virtio.driver, NOTICE);