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>
25 #include <rte_memory.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 = cvq->vq;
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 = cvq->vq;
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;
319 if (!cvq || !cvq->vq) {
320 PMD_INIT_LOG(ERR, "Control queue is not supported.");
324 rte_spinlock_lock(&cvq->lock);
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 = 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;
556 rxvq->port_id = dev->data->port_id;
558 } else if (queue_type == VTNET_TQ) {
561 txvq->port_id = dev->data->port_id;
563 txvq->virtio_net_hdr_mz = hdr_mz;
564 txvq->virtio_net_hdr_mem = hdr_mz->iova;
565 } else if (queue_type == VTNET_CQ) {
569 cvq->virtio_net_hdr_mz = hdr_mz;
570 cvq->virtio_net_hdr_mem = hdr_mz->iova;
571 memset(cvq->virtio_net_hdr_mz->addr, 0, PAGE_SIZE);
576 if (queue_type == VTNET_TQ) {
577 struct virtio_tx_region *txr;
581 memset(txr, 0, vq_size * sizeof(*txr));
582 for (i = 0; i < vq_size; i++) {
583 /* first indirect descriptor is always the tx header */
584 if (!virtio_with_packed_queue(hw)) {
585 struct vring_desc *start_dp = txr[i].tx_indir;
586 vring_desc_init_split(start_dp,
587 RTE_DIM(txr[i].tx_indir));
588 start_dp->addr = txvq->virtio_net_hdr_mem
590 + offsetof(struct virtio_tx_region,
592 start_dp->len = hw->vtnet_hdr_size;
593 start_dp->flags = VRING_DESC_F_NEXT;
595 struct vring_packed_desc *start_dp =
596 txr[i].tx_packed_indir;
597 vring_desc_init_indirect_packed(start_dp,
598 RTE_DIM(txr[i].tx_packed_indir));
599 start_dp->addr = txvq->virtio_net_hdr_mem
601 + offsetof(struct virtio_tx_region,
603 start_dp->len = hw->vtnet_hdr_size;
608 if (VIRTIO_OPS(hw)->setup_queue(hw, vq) < 0) {
609 PMD_INIT_LOG(ERR, "setup_queue failed");
617 rte_memzone_free(hdr_mz);
618 rte_memzone_free(mz);
625 virtio_free_queues(struct virtio_hw *hw)
627 uint16_t nr_vq = virtio_get_nr_vq(hw);
628 struct virtqueue *vq;
635 for (i = 0; i < nr_vq; i++) {
640 queue_type = virtio_get_queue_type(hw, i);
641 if (queue_type == VTNET_RQ) {
642 rte_free(vq->sw_ring);
643 rte_memzone_free(vq->rxq.mz);
644 } else if (queue_type == VTNET_TQ) {
645 rte_memzone_free(vq->txq.mz);
646 rte_memzone_free(vq->txq.virtio_net_hdr_mz);
648 rte_memzone_free(vq->cq.mz);
649 rte_memzone_free(vq->cq.virtio_net_hdr_mz);
661 virtio_alloc_queues(struct rte_eth_dev *dev)
663 struct virtio_hw *hw = dev->data->dev_private;
664 uint16_t nr_vq = virtio_get_nr_vq(hw);
668 hw->vqs = rte_zmalloc(NULL, sizeof(struct virtqueue *) * nr_vq, 0);
670 PMD_INIT_LOG(ERR, "failed to allocate vqs");
674 for (i = 0; i < nr_vq; i++) {
675 ret = virtio_init_queue(dev, i);
677 virtio_free_queues(hw);
685 static void virtio_queues_unbind_intr(struct rte_eth_dev *dev);
688 virtio_dev_close(struct rte_eth_dev *dev)
690 struct virtio_hw *hw = dev->data->dev_private;
691 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf;
693 PMD_INIT_LOG(DEBUG, "virtio_dev_close");
694 if (rte_eal_process_type() != RTE_PROC_PRIMARY)
702 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
703 VIRTIO_OPS(hw)->set_config_irq(hw, VIRTIO_MSI_NO_VECTOR);
705 virtio_queues_unbind_intr(dev);
707 if (intr_conf->lsc || intr_conf->rxq) {
708 virtio_intr_disable(dev);
709 rte_intr_efd_disable(dev->intr_handle);
710 rte_free(dev->intr_handle->intr_vec);
711 dev->intr_handle->intr_vec = NULL;
715 virtio_dev_free_mbufs(dev);
716 virtio_free_queues(hw);
718 return VIRTIO_OPS(hw)->dev_close(hw);
722 virtio_dev_promiscuous_enable(struct rte_eth_dev *dev)
724 struct virtio_hw *hw = dev->data->dev_private;
725 struct virtio_pmd_ctrl ctrl;
729 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
730 PMD_INIT_LOG(INFO, "host does not support rx control");
734 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
735 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
739 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
741 PMD_INIT_LOG(ERR, "Failed to enable promisc");
749 virtio_dev_promiscuous_disable(struct rte_eth_dev *dev)
751 struct virtio_hw *hw = dev->data->dev_private;
752 struct virtio_pmd_ctrl ctrl;
756 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
757 PMD_INIT_LOG(INFO, "host does not support rx control");
761 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
762 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
766 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
768 PMD_INIT_LOG(ERR, "Failed to disable promisc");
776 virtio_dev_allmulticast_enable(struct rte_eth_dev *dev)
778 struct virtio_hw *hw = dev->data->dev_private;
779 struct virtio_pmd_ctrl ctrl;
783 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
784 PMD_INIT_LOG(INFO, "host does not support rx control");
788 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
789 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
793 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
795 PMD_INIT_LOG(ERR, "Failed to enable allmulticast");
803 virtio_dev_allmulticast_disable(struct rte_eth_dev *dev)
805 struct virtio_hw *hw = dev->data->dev_private;
806 struct virtio_pmd_ctrl ctrl;
810 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
811 PMD_INIT_LOG(INFO, "host does not support rx control");
815 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
816 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
820 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
822 PMD_INIT_LOG(ERR, "Failed to disable allmulticast");
829 #define VLAN_TAG_LEN 4 /* 802.3ac tag (not DMA'd) */
831 virtio_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
833 struct virtio_hw *hw = dev->data->dev_private;
834 uint32_t ether_hdr_len = RTE_ETHER_HDR_LEN + VLAN_TAG_LEN +
836 uint32_t frame_size = mtu + ether_hdr_len;
837 uint32_t max_frame_size = hw->max_mtu + ether_hdr_len;
839 max_frame_size = RTE_MIN(max_frame_size, VIRTIO_MAX_RX_PKTLEN);
841 if (mtu < RTE_ETHER_MIN_MTU || frame_size > max_frame_size) {
842 PMD_INIT_LOG(ERR, "MTU should be between %d and %d",
843 RTE_ETHER_MIN_MTU, max_frame_size - ether_hdr_len);
850 virtio_dev_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id)
852 struct virtio_hw *hw = dev->data->dev_private;
853 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id];
854 struct virtqueue *vq = rxvq->vq;
856 virtqueue_enable_intr(vq);
857 virtio_mb(hw->weak_barriers);
862 virtio_dev_rx_queue_intr_disable(struct rte_eth_dev *dev, uint16_t queue_id)
864 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id];
865 struct virtqueue *vq = rxvq->vq;
867 virtqueue_disable_intr(vq);
872 * dev_ops for virtio, bare necessities for basic operation
874 static const struct eth_dev_ops virtio_eth_dev_ops = {
875 .dev_configure = virtio_dev_configure,
876 .dev_start = virtio_dev_start,
877 .dev_stop = virtio_dev_stop,
878 .dev_close = virtio_dev_close,
879 .promiscuous_enable = virtio_dev_promiscuous_enable,
880 .promiscuous_disable = virtio_dev_promiscuous_disable,
881 .allmulticast_enable = virtio_dev_allmulticast_enable,
882 .allmulticast_disable = virtio_dev_allmulticast_disable,
883 .mtu_set = virtio_mtu_set,
884 .dev_infos_get = virtio_dev_info_get,
885 .stats_get = virtio_dev_stats_get,
886 .xstats_get = virtio_dev_xstats_get,
887 .xstats_get_names = virtio_dev_xstats_get_names,
888 .stats_reset = virtio_dev_stats_reset,
889 .xstats_reset = virtio_dev_stats_reset,
890 .link_update = virtio_dev_link_update,
891 .vlan_offload_set = virtio_dev_vlan_offload_set,
892 .rx_queue_setup = virtio_dev_rx_queue_setup,
893 .rx_queue_intr_enable = virtio_dev_rx_queue_intr_enable,
894 .rx_queue_intr_disable = virtio_dev_rx_queue_intr_disable,
895 .rx_queue_release = virtio_dev_queue_release,
896 .tx_queue_setup = virtio_dev_tx_queue_setup,
897 .tx_queue_release = virtio_dev_queue_release,
898 /* collect stats per queue */
899 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set,
900 .vlan_filter_set = virtio_vlan_filter_set,
901 .mac_addr_add = virtio_mac_addr_add,
902 .mac_addr_remove = virtio_mac_addr_remove,
903 .mac_addr_set = virtio_mac_addr_set,
907 * dev_ops for virtio-user in secondary processes, as we just have
908 * some limited supports currently.
910 const struct eth_dev_ops virtio_user_secondary_eth_dev_ops = {
911 .dev_infos_get = virtio_dev_info_get,
912 .stats_get = virtio_dev_stats_get,
913 .xstats_get = virtio_dev_xstats_get,
914 .xstats_get_names = virtio_dev_xstats_get_names,
915 .stats_reset = virtio_dev_stats_reset,
916 .xstats_reset = virtio_dev_stats_reset,
917 /* collect stats per queue */
918 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set,
922 virtio_update_stats(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
926 for (i = 0; i < dev->data->nb_tx_queues; i++) {
927 const struct virtnet_tx *txvq = dev->data->tx_queues[i];
931 stats->opackets += txvq->stats.packets;
932 stats->obytes += txvq->stats.bytes;
934 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
935 stats->q_opackets[i] = txvq->stats.packets;
936 stats->q_obytes[i] = txvq->stats.bytes;
940 for (i = 0; i < dev->data->nb_rx_queues; i++) {
941 const struct virtnet_rx *rxvq = dev->data->rx_queues[i];
945 stats->ipackets += rxvq->stats.packets;
946 stats->ibytes += rxvq->stats.bytes;
947 stats->ierrors += rxvq->stats.errors;
949 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
950 stats->q_ipackets[i] = rxvq->stats.packets;
951 stats->q_ibytes[i] = rxvq->stats.bytes;
955 stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed;
958 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev,
959 struct rte_eth_xstat_name *xstats_names,
960 __rte_unused unsigned limit)
966 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS +
967 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS;
969 if (xstats_names != NULL) {
970 /* Note: limit checked in rte_eth_xstats_names() */
972 for (i = 0; i < dev->data->nb_rx_queues; i++) {
973 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
976 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) {
977 snprintf(xstats_names[count].name,
978 sizeof(xstats_names[count].name),
980 rte_virtio_rxq_stat_strings[t].name);
985 for (i = 0; i < dev->data->nb_tx_queues; i++) {
986 struct virtnet_tx *txvq = dev->data->tx_queues[i];
989 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) {
990 snprintf(xstats_names[count].name,
991 sizeof(xstats_names[count].name),
993 rte_virtio_txq_stat_strings[t].name);
1003 virtio_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats,
1009 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS +
1010 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS;
1015 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1016 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
1023 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) {
1024 xstats[count].value = *(uint64_t *)(((char *)rxvq) +
1025 rte_virtio_rxq_stat_strings[t].offset);
1026 xstats[count].id = count;
1031 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1032 struct virtnet_tx *txvq = dev->data->tx_queues[i];
1039 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) {
1040 xstats[count].value = *(uint64_t *)(((char *)txvq) +
1041 rte_virtio_txq_stat_strings[t].offset);
1042 xstats[count].id = count;
1051 virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
1053 virtio_update_stats(dev, stats);
1059 virtio_dev_stats_reset(struct rte_eth_dev *dev)
1063 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1064 struct virtnet_tx *txvq = dev->data->tx_queues[i];
1068 txvq->stats.packets = 0;
1069 txvq->stats.bytes = 0;
1070 txvq->stats.multicast = 0;
1071 txvq->stats.broadcast = 0;
1072 memset(txvq->stats.size_bins, 0,
1073 sizeof(txvq->stats.size_bins[0]) * 8);
1076 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1077 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
1081 rxvq->stats.packets = 0;
1082 rxvq->stats.bytes = 0;
1083 rxvq->stats.errors = 0;
1084 rxvq->stats.multicast = 0;
1085 rxvq->stats.broadcast = 0;
1086 memset(rxvq->stats.size_bins, 0,
1087 sizeof(rxvq->stats.size_bins[0]) * 8);
1094 virtio_set_hwaddr(struct virtio_hw *hw)
1096 virtio_write_dev_config(hw,
1097 offsetof(struct virtio_net_config, mac),
1098 &hw->mac_addr, RTE_ETHER_ADDR_LEN);
1102 virtio_get_hwaddr(struct virtio_hw *hw)
1104 if (virtio_with_feature(hw, VIRTIO_NET_F_MAC)) {
1105 virtio_read_dev_config(hw,
1106 offsetof(struct virtio_net_config, mac),
1107 &hw->mac_addr, RTE_ETHER_ADDR_LEN);
1109 rte_eth_random_addr(&hw->mac_addr[0]);
1110 virtio_set_hwaddr(hw);
1115 virtio_mac_table_set(struct virtio_hw *hw,
1116 const struct virtio_net_ctrl_mac *uc,
1117 const struct virtio_net_ctrl_mac *mc)
1119 struct virtio_pmd_ctrl ctrl;
1122 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
1123 PMD_DRV_LOG(INFO, "host does not support mac table");
1127 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
1128 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET;
1130 len[0] = uc->entries * RTE_ETHER_ADDR_LEN + sizeof(uc->entries);
1131 memcpy(ctrl.data, uc, len[0]);
1133 len[1] = mc->entries * RTE_ETHER_ADDR_LEN + sizeof(mc->entries);
1134 memcpy(ctrl.data + len[0], mc, len[1]);
1136 err = virtio_send_command(hw->cvq, &ctrl, len, 2);
1138 PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err);
1143 virtio_mac_addr_add(struct rte_eth_dev *dev, struct rte_ether_addr *mac_addr,
1144 uint32_t index, uint32_t vmdq __rte_unused)
1146 struct virtio_hw *hw = dev->data->dev_private;
1147 const struct rte_ether_addr *addrs = dev->data->mac_addrs;
1149 struct virtio_net_ctrl_mac *uc, *mc;
1151 if (index >= VIRTIO_MAX_MAC_ADDRS) {
1152 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
1156 uc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN +
1157 sizeof(uc->entries));
1159 mc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN +
1160 sizeof(mc->entries));
1163 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
1164 const struct rte_ether_addr *addr
1165 = (i == index) ? mac_addr : addrs + i;
1166 struct virtio_net_ctrl_mac *tbl
1167 = rte_is_multicast_ether_addr(addr) ? mc : uc;
1169 memcpy(&tbl->macs[tbl->entries++], addr, RTE_ETHER_ADDR_LEN);
1172 return virtio_mac_table_set(hw, uc, mc);
1176 virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
1178 struct virtio_hw *hw = dev->data->dev_private;
1179 struct rte_ether_addr *addrs = dev->data->mac_addrs;
1180 struct virtio_net_ctrl_mac *uc, *mc;
1183 if (index >= VIRTIO_MAX_MAC_ADDRS) {
1184 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
1188 uc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN +
1189 sizeof(uc->entries));
1191 mc = alloca(VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN +
1192 sizeof(mc->entries));
1195 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
1196 struct virtio_net_ctrl_mac *tbl;
1198 if (i == index || rte_is_zero_ether_addr(addrs + i))
1201 tbl = rte_is_multicast_ether_addr(addrs + i) ? mc : uc;
1202 memcpy(&tbl->macs[tbl->entries++], addrs + i,
1203 RTE_ETHER_ADDR_LEN);
1206 virtio_mac_table_set(hw, uc, mc);
1210 virtio_mac_addr_set(struct rte_eth_dev *dev, struct rte_ether_addr *mac_addr)
1212 struct virtio_hw *hw = dev->data->dev_private;
1214 memcpy(hw->mac_addr, mac_addr, RTE_ETHER_ADDR_LEN);
1216 /* Use atomic update if available */
1217 if (virtio_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
1218 struct virtio_pmd_ctrl ctrl;
1219 int len = RTE_ETHER_ADDR_LEN;
1221 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
1222 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET;
1224 memcpy(ctrl.data, mac_addr, RTE_ETHER_ADDR_LEN);
1225 return virtio_send_command(hw->cvq, &ctrl, &len, 1);
1228 if (!virtio_with_feature(hw, VIRTIO_NET_F_MAC))
1231 virtio_set_hwaddr(hw);
1236 virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
1238 struct virtio_hw *hw = dev->data->dev_private;
1239 struct virtio_pmd_ctrl ctrl;
1242 if (!virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN))
1245 ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN;
1246 ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL;
1247 memcpy(ctrl.data, &vlan_id, sizeof(vlan_id));
1248 len = sizeof(vlan_id);
1250 return virtio_send_command(hw->cvq, &ctrl, &len, 1);
1254 virtio_intr_unmask(struct rte_eth_dev *dev)
1256 struct virtio_hw *hw = dev->data->dev_private;
1258 if (rte_intr_ack(dev->intr_handle) < 0)
1261 if (VIRTIO_OPS(hw)->intr_detect)
1262 VIRTIO_OPS(hw)->intr_detect(hw);
1268 virtio_intr_enable(struct rte_eth_dev *dev)
1270 struct virtio_hw *hw = dev->data->dev_private;
1272 if (rte_intr_enable(dev->intr_handle) < 0)
1275 if (VIRTIO_OPS(hw)->intr_detect)
1276 VIRTIO_OPS(hw)->intr_detect(hw);
1282 virtio_intr_disable(struct rte_eth_dev *dev)
1284 struct virtio_hw *hw = dev->data->dev_private;
1286 if (rte_intr_disable(dev->intr_handle) < 0)
1289 if (VIRTIO_OPS(hw)->intr_detect)
1290 VIRTIO_OPS(hw)->intr_detect(hw);
1296 virtio_ethdev_negotiate_features(struct virtio_hw *hw, uint64_t req_features)
1298 uint64_t host_features;
1300 /* Prepare guest_features: feature that driver wants to support */
1301 PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %" PRIx64,
1304 /* Read device(host) feature bits */
1305 host_features = VIRTIO_OPS(hw)->get_features(hw);
1306 PMD_INIT_LOG(DEBUG, "host_features before negotiate = %" PRIx64,
1309 /* If supported, ensure MTU value is valid before acknowledging it. */
1310 if (host_features & req_features & (1ULL << VIRTIO_NET_F_MTU)) {
1311 struct virtio_net_config config;
1313 virtio_read_dev_config(hw,
1314 offsetof(struct virtio_net_config, mtu),
1315 &config.mtu, sizeof(config.mtu));
1317 if (config.mtu < RTE_ETHER_MIN_MTU)
1318 req_features &= ~(1ULL << VIRTIO_NET_F_MTU);
1322 * Negotiate features: Subset of device feature bits are written back
1323 * guest feature bits.
1325 hw->guest_features = req_features;
1326 hw->guest_features = virtio_negotiate_features(hw, host_features);
1327 PMD_INIT_LOG(DEBUG, "features after negotiate = %" PRIx64,
1328 hw->guest_features);
1330 if (VIRTIO_OPS(hw)->features_ok(hw) < 0)
1333 if (virtio_with_feature(hw, VIRTIO_F_VERSION_1)) {
1334 virtio_set_status(hw, VIRTIO_CONFIG_STATUS_FEATURES_OK);
1336 if (!(virtio_get_status(hw) & VIRTIO_CONFIG_STATUS_FEATURES_OK)) {
1337 PMD_INIT_LOG(ERR, "Failed to set FEATURES_OK status!");
1342 hw->req_guest_features = req_features;
1348 virtio_dev_pause(struct rte_eth_dev *dev)
1350 struct virtio_hw *hw = dev->data->dev_private;
1352 rte_spinlock_lock(&hw->state_lock);
1354 if (hw->started == 0) {
1355 /* Device is just stopped. */
1356 rte_spinlock_unlock(&hw->state_lock);
1361 * Prevent the worker threads from touching queues to avoid contention,
1362 * 1 ms should be enough for the ongoing Tx function to finish.
1369 * Recover hw state to let the worker threads continue.
1372 virtio_dev_resume(struct rte_eth_dev *dev)
1374 struct virtio_hw *hw = dev->data->dev_private;
1377 rte_spinlock_unlock(&hw->state_lock);
1381 * Should be called only after device is paused.
1384 virtio_inject_pkts(struct rte_eth_dev *dev, struct rte_mbuf **tx_pkts,
1387 struct virtio_hw *hw = dev->data->dev_private;
1388 struct virtnet_tx *txvq = dev->data->tx_queues[0];
1391 hw->inject_pkts = tx_pkts;
1392 ret = dev->tx_pkt_burst(txvq, tx_pkts, nb_pkts);
1393 hw->inject_pkts = NULL;
1399 virtio_notify_peers(struct rte_eth_dev *dev)
1401 struct virtio_hw *hw = dev->data->dev_private;
1402 struct virtnet_rx *rxvq;
1403 struct rte_mbuf *rarp_mbuf;
1405 if (!dev->data->rx_queues)
1408 rxvq = dev->data->rx_queues[0];
1412 rarp_mbuf = rte_net_make_rarp_packet(rxvq->mpool,
1413 (struct rte_ether_addr *)hw->mac_addr);
1414 if (rarp_mbuf == NULL) {
1415 PMD_DRV_LOG(ERR, "failed to make RARP packet.");
1419 /* If virtio port just stopped, no need to send RARP */
1420 if (virtio_dev_pause(dev) < 0) {
1421 rte_pktmbuf_free(rarp_mbuf);
1425 virtio_inject_pkts(dev, &rarp_mbuf, 1);
1426 virtio_dev_resume(dev);
1430 virtio_ack_link_announce(struct rte_eth_dev *dev)
1432 struct virtio_hw *hw = dev->data->dev_private;
1433 struct virtio_pmd_ctrl ctrl;
1435 ctrl.hdr.class = VIRTIO_NET_CTRL_ANNOUNCE;
1436 ctrl.hdr.cmd = VIRTIO_NET_CTRL_ANNOUNCE_ACK;
1438 virtio_send_command(hw->cvq, &ctrl, NULL, 0);
1442 * Process virtio config changed interrupt. Call the callback
1443 * if link state changed, generate gratuitous RARP packet if
1444 * the status indicates an ANNOUNCE.
1447 virtio_interrupt_handler(void *param)
1449 struct rte_eth_dev *dev = param;
1450 struct virtio_hw *hw = dev->data->dev_private;
1454 /* Read interrupt status which clears interrupt */
1455 isr = virtio_get_isr(hw);
1456 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr);
1458 if (virtio_intr_unmask(dev) < 0)
1459 PMD_DRV_LOG(ERR, "interrupt enable failed");
1461 if (isr & VIRTIO_ISR_CONFIG) {
1462 if (virtio_dev_link_update(dev, 0) == 0)
1463 rte_eth_dev_callback_process(dev,
1464 RTE_ETH_EVENT_INTR_LSC,
1467 if (virtio_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1468 virtio_read_dev_config(hw,
1469 offsetof(struct virtio_net_config, status),
1470 &status, sizeof(status));
1471 if (status & VIRTIO_NET_S_ANNOUNCE) {
1472 virtio_notify_peers(dev);
1474 virtio_ack_link_announce(dev);
1480 /* set rx and tx handlers according to what is supported */
1482 set_rxtx_funcs(struct rte_eth_dev *eth_dev)
1484 struct virtio_hw *hw = eth_dev->data->dev_private;
1486 eth_dev->tx_pkt_prepare = virtio_xmit_pkts_prepare;
1487 if (virtio_with_packed_queue(hw)) {
1489 "virtio: using packed ring %s Tx path on port %u",
1490 hw->use_vec_tx ? "vectorized" : "standard",
1491 eth_dev->data->port_id);
1493 eth_dev->tx_pkt_burst = virtio_xmit_pkts_packed_vec;
1495 eth_dev->tx_pkt_burst = virtio_xmit_pkts_packed;
1497 if (hw->use_inorder_tx) {
1498 PMD_INIT_LOG(INFO, "virtio: using inorder Tx path on port %u",
1499 eth_dev->data->port_id);
1500 eth_dev->tx_pkt_burst = virtio_xmit_pkts_inorder;
1502 PMD_INIT_LOG(INFO, "virtio: using standard Tx path on port %u",
1503 eth_dev->data->port_id);
1504 eth_dev->tx_pkt_burst = virtio_xmit_pkts;
1508 if (virtio_with_packed_queue(hw)) {
1509 if (hw->use_vec_rx) {
1511 "virtio: using packed ring vectorized Rx path on port %u",
1512 eth_dev->data->port_id);
1513 eth_dev->rx_pkt_burst =
1514 &virtio_recv_pkts_packed_vec;
1515 } else if (virtio_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
1517 "virtio: using packed ring mergeable buffer Rx path on port %u",
1518 eth_dev->data->port_id);
1519 eth_dev->rx_pkt_burst =
1520 &virtio_recv_mergeable_pkts_packed;
1523 "virtio: using packed ring standard Rx path on port %u",
1524 eth_dev->data->port_id);
1525 eth_dev->rx_pkt_burst = &virtio_recv_pkts_packed;
1528 if (hw->use_vec_rx) {
1529 PMD_INIT_LOG(INFO, "virtio: using vectorized Rx path on port %u",
1530 eth_dev->data->port_id);
1531 eth_dev->rx_pkt_burst = virtio_recv_pkts_vec;
1532 } else if (hw->use_inorder_rx) {
1534 "virtio: using inorder Rx path on port %u",
1535 eth_dev->data->port_id);
1536 eth_dev->rx_pkt_burst = &virtio_recv_pkts_inorder;
1537 } else if (virtio_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
1539 "virtio: using mergeable buffer Rx path on port %u",
1540 eth_dev->data->port_id);
1541 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts;
1543 PMD_INIT_LOG(INFO, "virtio: using standard Rx path on port %u",
1544 eth_dev->data->port_id);
1545 eth_dev->rx_pkt_burst = &virtio_recv_pkts;
1551 /* Only support 1:1 queue/interrupt mapping so far.
1552 * TODO: support n:1 queue/interrupt mapping when there are limited number of
1553 * interrupt vectors (<N+1).
1556 virtio_queues_bind_intr(struct rte_eth_dev *dev)
1559 struct virtio_hw *hw = dev->data->dev_private;
1561 PMD_INIT_LOG(INFO, "queue/interrupt binding");
1562 for (i = 0; i < dev->data->nb_rx_queues; ++i) {
1563 dev->intr_handle->intr_vec[i] = i + 1;
1564 if (VIRTIO_OPS(hw)->set_queue_irq(hw, hw->vqs[i * 2], i + 1) ==
1565 VIRTIO_MSI_NO_VECTOR) {
1566 PMD_DRV_LOG(ERR, "failed to set queue vector");
1575 virtio_queues_unbind_intr(struct rte_eth_dev *dev)
1578 struct virtio_hw *hw = dev->data->dev_private;
1580 PMD_INIT_LOG(INFO, "queue/interrupt unbinding");
1581 for (i = 0; i < dev->data->nb_rx_queues; ++i)
1582 VIRTIO_OPS(hw)->set_queue_irq(hw,
1583 hw->vqs[i * VTNET_CQ],
1584 VIRTIO_MSI_NO_VECTOR);
1588 virtio_configure_intr(struct rte_eth_dev *dev)
1590 struct virtio_hw *hw = dev->data->dev_private;
1592 if (!rte_intr_cap_multiple(dev->intr_handle)) {
1593 PMD_INIT_LOG(ERR, "Multiple intr vector not supported");
1597 if (rte_intr_efd_enable(dev->intr_handle, dev->data->nb_rx_queues)) {
1598 PMD_INIT_LOG(ERR, "Fail to create eventfd");
1602 if (!dev->intr_handle->intr_vec) {
1603 dev->intr_handle->intr_vec =
1604 rte_zmalloc("intr_vec",
1605 hw->max_queue_pairs * sizeof(int), 0);
1606 if (!dev->intr_handle->intr_vec) {
1607 PMD_INIT_LOG(ERR, "Failed to allocate %u rxq vectors",
1608 hw->max_queue_pairs);
1613 /* Re-register callback to update max_intr */
1614 rte_intr_callback_unregister(dev->intr_handle,
1615 virtio_interrupt_handler,
1617 rte_intr_callback_register(dev->intr_handle,
1618 virtio_interrupt_handler,
1621 /* DO NOT try to remove this! This function will enable msix, or QEMU
1622 * will encounter SIGSEGV when DRIVER_OK is sent.
1623 * And for legacy devices, this should be done before queue/vec binding
1624 * to change the config size from 20 to 24, or VIRTIO_MSI_QUEUE_VECTOR
1625 * (22) will be ignored.
1627 if (virtio_intr_enable(dev) < 0) {
1628 PMD_DRV_LOG(ERR, "interrupt enable failed");
1632 if (virtio_queues_bind_intr(dev) < 0) {
1633 PMD_INIT_LOG(ERR, "Failed to bind queue/interrupt");
1639 #define DUPLEX_UNKNOWN 0xff
1640 /* reset device and renegotiate features if needed */
1642 virtio_init_device(struct rte_eth_dev *eth_dev, uint64_t req_features)
1644 struct virtio_hw *hw = eth_dev->data->dev_private;
1645 struct virtio_net_config *config;
1646 struct virtio_net_config local_config;
1649 /* Reset the device although not necessary at startup */
1653 virtio_dev_free_mbufs(eth_dev);
1654 virtio_free_queues(hw);
1657 /* Tell the host we've noticed this device. */
1658 virtio_set_status(hw, VIRTIO_CONFIG_STATUS_ACK);
1660 /* Tell the host we've known how to drive the device. */
1661 virtio_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER);
1662 if (virtio_ethdev_negotiate_features(hw, req_features) < 0)
1665 hw->weak_barriers = !virtio_with_feature(hw, VIRTIO_F_ORDER_PLATFORM);
1667 /* If host does not support both status and MSI-X then disable LSC */
1668 if (virtio_with_feature(hw, VIRTIO_NET_F_STATUS) && hw->intr_lsc)
1669 eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC;
1671 eth_dev->data->dev_flags &= ~RTE_ETH_DEV_INTR_LSC;
1673 eth_dev->data->dev_flags |= RTE_ETH_DEV_AUTOFILL_QUEUE_XSTATS;
1675 /* Setting up rx_header size for the device */
1676 if (virtio_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF) ||
1677 virtio_with_feature(hw, VIRTIO_F_VERSION_1) ||
1678 virtio_with_packed_queue(hw))
1679 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf);
1681 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr);
1683 /* Copy the permanent MAC address to: virtio_hw */
1684 virtio_get_hwaddr(hw);
1685 rte_ether_addr_copy((struct rte_ether_addr *)hw->mac_addr,
1686 ð_dev->data->mac_addrs[0]);
1688 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1689 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2],
1690 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]);
1692 if (hw->speed == ETH_SPEED_NUM_UNKNOWN) {
1693 if (virtio_with_feature(hw, VIRTIO_NET_F_SPEED_DUPLEX)) {
1694 config = &local_config;
1695 virtio_read_dev_config(hw,
1696 offsetof(struct virtio_net_config, speed),
1697 &config->speed, sizeof(config->speed));
1698 virtio_read_dev_config(hw,
1699 offsetof(struct virtio_net_config, duplex),
1700 &config->duplex, sizeof(config->duplex));
1701 hw->speed = config->speed;
1702 hw->duplex = config->duplex;
1705 if (hw->duplex == DUPLEX_UNKNOWN)
1706 hw->duplex = ETH_LINK_FULL_DUPLEX;
1707 PMD_INIT_LOG(DEBUG, "link speed = %d, duplex = %d",
1708 hw->speed, hw->duplex);
1709 if (virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) {
1710 config = &local_config;
1712 virtio_read_dev_config(hw,
1713 offsetof(struct virtio_net_config, mac),
1714 &config->mac, sizeof(config->mac));
1716 if (virtio_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1717 virtio_read_dev_config(hw,
1718 offsetof(struct virtio_net_config, status),
1719 &config->status, sizeof(config->status));
1722 "VIRTIO_NET_F_STATUS is not supported");
1726 if (virtio_with_feature(hw, VIRTIO_NET_F_MQ)) {
1727 virtio_read_dev_config(hw,
1728 offsetof(struct virtio_net_config, max_virtqueue_pairs),
1729 &config->max_virtqueue_pairs,
1730 sizeof(config->max_virtqueue_pairs));
1733 "VIRTIO_NET_F_MQ is not supported");
1734 config->max_virtqueue_pairs = 1;
1737 hw->max_queue_pairs = config->max_virtqueue_pairs;
1739 if (virtio_with_feature(hw, VIRTIO_NET_F_MTU)) {
1740 virtio_read_dev_config(hw,
1741 offsetof(struct virtio_net_config, mtu),
1743 sizeof(config->mtu));
1746 * MTU value has already been checked at negotiation
1747 * time, but check again in case it has changed since
1748 * then, which should not happen.
1750 if (config->mtu < RTE_ETHER_MIN_MTU) {
1751 PMD_INIT_LOG(ERR, "invalid max MTU value (%u)",
1756 hw->max_mtu = config->mtu;
1757 /* Set initial MTU to maximum one supported by vhost */
1758 eth_dev->data->mtu = config->mtu;
1761 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - RTE_ETHER_HDR_LEN -
1762 VLAN_TAG_LEN - hw->vtnet_hdr_size;
1765 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d",
1766 config->max_virtqueue_pairs);
1767 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status);
1769 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1770 config->mac[0], config->mac[1],
1771 config->mac[2], config->mac[3],
1772 config->mac[4], config->mac[5]);
1774 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=1");
1775 hw->max_queue_pairs = 1;
1776 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - RTE_ETHER_HDR_LEN -
1777 VLAN_TAG_LEN - hw->vtnet_hdr_size;
1780 ret = virtio_alloc_queues(eth_dev);
1784 if (eth_dev->data->dev_conf.intr_conf.rxq) {
1785 if (virtio_configure_intr(eth_dev) < 0) {
1786 PMD_INIT_LOG(ERR, "failed to configure interrupt");
1787 virtio_free_queues(hw);
1792 virtio_reinit_complete(hw);
1798 * This function is based on probe() function in virtio_pci.c
1799 * It returns 0 on success.
1802 eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
1804 struct virtio_hw *hw = eth_dev->data->dev_private;
1805 uint32_t speed = ETH_SPEED_NUM_UNKNOWN;
1809 if (sizeof(struct virtio_net_hdr_mrg_rxbuf) > RTE_PKTMBUF_HEADROOM) {
1811 "Not sufficient headroom required = %d, avail = %d",
1812 (int)sizeof(struct virtio_net_hdr_mrg_rxbuf),
1813 RTE_PKTMBUF_HEADROOM);
1818 eth_dev->dev_ops = &virtio_eth_dev_ops;
1819 eth_dev->rx_descriptor_done = virtio_dev_rx_queue_done;
1821 if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
1822 set_rxtx_funcs(eth_dev);
1826 ret = virtio_dev_devargs_parse(eth_dev->device->devargs, &speed, &vectorized);
1831 /* Allocate memory for storing MAC addresses */
1832 eth_dev->data->mac_addrs = rte_zmalloc("virtio",
1833 VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN, 0);
1834 if (eth_dev->data->mac_addrs == NULL) {
1836 "Failed to allocate %d bytes needed to store MAC addresses",
1837 VIRTIO_MAX_MAC_ADDRS * RTE_ETHER_ADDR_LEN);
1841 rte_spinlock_init(&hw->state_lock);
1843 /* reset device and negotiate default features */
1844 ret = virtio_init_device(eth_dev, VIRTIO_PMD_DEFAULT_GUEST_FEATURES);
1846 goto err_virtio_init;
1849 if (!virtio_with_packed_queue(hw)) {
1852 #if defined(CC_AVX512_SUPPORT) || defined(RTE_ARCH_ARM)
1857 "building environment do not support packed ring vectorized");
1867 rte_free(eth_dev->data->mac_addrs);
1868 eth_dev->data->mac_addrs = NULL;
1873 virtio_dev_speed_capa_get(uint32_t speed)
1876 case ETH_SPEED_NUM_10G:
1877 return ETH_LINK_SPEED_10G;
1878 case ETH_SPEED_NUM_20G:
1879 return ETH_LINK_SPEED_20G;
1880 case ETH_SPEED_NUM_25G:
1881 return ETH_LINK_SPEED_25G;
1882 case ETH_SPEED_NUM_40G:
1883 return ETH_LINK_SPEED_40G;
1884 case ETH_SPEED_NUM_50G:
1885 return ETH_LINK_SPEED_50G;
1886 case ETH_SPEED_NUM_56G:
1887 return ETH_LINK_SPEED_56G;
1888 case ETH_SPEED_NUM_100G:
1889 return ETH_LINK_SPEED_100G;
1890 case ETH_SPEED_NUM_200G:
1891 return ETH_LINK_SPEED_200G;
1897 static int vectorized_check_handler(__rte_unused const char *key,
1898 const char *value, void *ret_val)
1900 if (strcmp(value, "1") == 0)
1901 *(int *)ret_val = 1;
1903 *(int *)ret_val = 0;
1908 #define VIRTIO_ARG_SPEED "speed"
1909 #define VIRTIO_ARG_VECTORIZED "vectorized"
1912 link_speed_handler(const char *key __rte_unused,
1913 const char *value, void *ret_val)
1916 if (!value || !ret_val)
1918 val = strtoul(value, NULL, 0);
1919 /* validate input */
1920 if (virtio_dev_speed_capa_get(val) == 0)
1922 *(uint32_t *)ret_val = val;
1929 virtio_dev_devargs_parse(struct rte_devargs *devargs, uint32_t *speed, int *vectorized)
1931 struct rte_kvargs *kvlist;
1934 if (devargs == NULL)
1937 kvlist = rte_kvargs_parse(devargs->args, NULL);
1938 if (kvlist == NULL) {
1939 PMD_INIT_LOG(ERR, "error when parsing param");
1943 if (speed && rte_kvargs_count(kvlist, VIRTIO_ARG_SPEED) == 1) {
1944 ret = rte_kvargs_process(kvlist,
1946 link_speed_handler, speed);
1948 PMD_INIT_LOG(ERR, "Failed to parse %s",
1955 rte_kvargs_count(kvlist, VIRTIO_ARG_VECTORIZED) == 1) {
1956 ret = rte_kvargs_process(kvlist,
1957 VIRTIO_ARG_VECTORIZED,
1958 vectorized_check_handler, vectorized);
1960 PMD_INIT_LOG(ERR, "Failed to parse %s",
1961 VIRTIO_ARG_VECTORIZED);
1967 rte_kvargs_free(kvlist);
1972 rx_offload_enabled(struct virtio_hw *hw)
1974 return virtio_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM) ||
1975 virtio_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) ||
1976 virtio_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6);
1980 tx_offload_enabled(struct virtio_hw *hw)
1982 return virtio_with_feature(hw, VIRTIO_NET_F_CSUM) ||
1983 virtio_with_feature(hw, VIRTIO_NET_F_HOST_TSO4) ||
1984 virtio_with_feature(hw, VIRTIO_NET_F_HOST_TSO6);
1988 * Configure virtio device
1989 * It returns 0 on success.
1992 virtio_dev_configure(struct rte_eth_dev *dev)
1994 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
1995 const struct rte_eth_txmode *txmode = &dev->data->dev_conf.txmode;
1996 struct virtio_hw *hw = dev->data->dev_private;
1997 uint32_t ether_hdr_len = RTE_ETHER_HDR_LEN + VLAN_TAG_LEN +
1999 uint64_t rx_offloads = rxmode->offloads;
2000 uint64_t tx_offloads = txmode->offloads;
2001 uint64_t req_features;
2004 PMD_INIT_LOG(DEBUG, "configure");
2005 req_features = VIRTIO_PMD_DEFAULT_GUEST_FEATURES;
2007 if (rxmode->mq_mode != ETH_MQ_RX_NONE) {
2009 "Unsupported Rx multi queue mode %d",
2014 if (txmode->mq_mode != ETH_MQ_TX_NONE) {
2016 "Unsupported Tx multi queue mode %d",
2021 if (dev->data->dev_conf.intr_conf.rxq) {
2022 ret = virtio_init_device(dev, hw->req_guest_features);
2027 if (rxmode->max_rx_pkt_len > hw->max_mtu + ether_hdr_len)
2028 req_features &= ~(1ULL << VIRTIO_NET_F_MTU);
2030 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM |
2031 DEV_RX_OFFLOAD_TCP_CKSUM))
2032 req_features |= (1ULL << VIRTIO_NET_F_GUEST_CSUM);
2034 if (rx_offloads & DEV_RX_OFFLOAD_TCP_LRO)
2036 (1ULL << VIRTIO_NET_F_GUEST_TSO4) |
2037 (1ULL << VIRTIO_NET_F_GUEST_TSO6);
2039 if (tx_offloads & (DEV_TX_OFFLOAD_UDP_CKSUM |
2040 DEV_TX_OFFLOAD_TCP_CKSUM))
2041 req_features |= (1ULL << VIRTIO_NET_F_CSUM);
2043 if (tx_offloads & DEV_TX_OFFLOAD_TCP_TSO)
2045 (1ULL << VIRTIO_NET_F_HOST_TSO4) |
2046 (1ULL << VIRTIO_NET_F_HOST_TSO6);
2048 /* if request features changed, reinit the device */
2049 if (req_features != hw->req_guest_features) {
2050 ret = virtio_init_device(dev, req_features);
2055 if ((rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM |
2056 DEV_RX_OFFLOAD_TCP_CKSUM)) &&
2057 !virtio_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM)) {
2059 "rx checksum not available on this host");
2063 if ((rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) &&
2064 (!virtio_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) ||
2065 !virtio_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6))) {
2067 "Large Receive Offload not available on this host");
2071 /* start control queue */
2072 if (virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VQ))
2073 virtio_dev_cq_start(dev);
2075 if (rx_offloads & DEV_RX_OFFLOAD_VLAN_STRIP)
2078 if ((rx_offloads & DEV_RX_OFFLOAD_VLAN_FILTER) &&
2079 !virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
2081 "vlan filtering not available on this host");
2085 hw->has_tx_offload = tx_offload_enabled(hw);
2086 hw->has_rx_offload = rx_offload_enabled(hw);
2088 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
2089 /* Enable vector (0) for Link State Intrerrupt */
2090 if (VIRTIO_OPS(hw)->set_config_irq(hw, 0) ==
2091 VIRTIO_MSI_NO_VECTOR) {
2092 PMD_DRV_LOG(ERR, "failed to set config vector");
2096 if (virtio_with_packed_queue(hw)) {
2097 #if defined(RTE_ARCH_X86_64) && defined(CC_AVX512_SUPPORT)
2098 if ((hw->use_vec_rx || hw->use_vec_tx) &&
2099 (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F) ||
2100 !virtio_with_feature(hw, VIRTIO_F_IN_ORDER) ||
2101 !virtio_with_feature(hw, VIRTIO_F_VERSION_1) ||
2102 rte_vect_get_max_simd_bitwidth() < RTE_VECT_SIMD_512)) {
2104 "disabled packed ring vectorized path for requirements not met");
2108 #elif defined(RTE_ARCH_ARM)
2109 if ((hw->use_vec_rx || hw->use_vec_tx) &&
2110 (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON) ||
2111 !virtio_with_feature(hw, VIRTIO_F_IN_ORDER) ||
2112 !virtio_with_feature(hw, VIRTIO_F_VERSION_1) ||
2113 rte_vect_get_max_simd_bitwidth() < RTE_VECT_SIMD_128)) {
2115 "disabled packed ring vectorized path for requirements not met");
2124 if (hw->use_vec_rx) {
2125 if (virtio_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
2127 "disabled packed ring vectorized rx for mrg_rxbuf enabled");
2131 if (rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) {
2133 "disabled packed ring vectorized rx for TCP_LRO enabled");
2138 if (virtio_with_feature(hw, VIRTIO_F_IN_ORDER)) {
2139 hw->use_inorder_tx = 1;
2140 hw->use_inorder_rx = 1;
2144 if (hw->use_vec_rx) {
2145 #if defined RTE_ARCH_ARM
2146 if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON)) {
2148 "disabled split ring vectorized path for requirement not met");
2152 if (virtio_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
2154 "disabled split ring vectorized rx for mrg_rxbuf enabled");
2158 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM |
2159 DEV_RX_OFFLOAD_TCP_CKSUM |
2160 DEV_RX_OFFLOAD_TCP_LRO |
2161 DEV_RX_OFFLOAD_VLAN_STRIP)) {
2163 "disabled split ring vectorized rx for offloading enabled");
2167 if (rte_vect_get_max_simd_bitwidth() < RTE_VECT_SIMD_128) {
2169 "disabled split ring vectorized rx, max SIMD bitwidth too low");
2180 virtio_dev_start(struct rte_eth_dev *dev)
2182 uint16_t nb_queues, i;
2183 struct virtnet_rx *rxvq;
2184 struct virtnet_tx *txvq __rte_unused;
2185 struct virtio_hw *hw = dev->data->dev_private;
2188 /* Finish the initialization of the queues */
2189 for (i = 0; i < dev->data->nb_rx_queues; i++) {
2190 ret = virtio_dev_rx_queue_setup_finish(dev, i);
2194 for (i = 0; i < dev->data->nb_tx_queues; i++) {
2195 ret = virtio_dev_tx_queue_setup_finish(dev, i);
2200 /* check if lsc interrupt feature is enabled */
2201 if (dev->data->dev_conf.intr_conf.lsc) {
2202 if (!(dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)) {
2203 PMD_DRV_LOG(ERR, "link status not supported by host");
2208 /* Enable uio/vfio intr/eventfd mapping: althrough we already did that
2209 * in device configure, but it could be unmapped when device is
2212 if (dev->data->dev_conf.intr_conf.lsc ||
2213 dev->data->dev_conf.intr_conf.rxq) {
2214 virtio_intr_disable(dev);
2216 /* Setup interrupt callback */
2217 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
2218 rte_intr_callback_register(dev->intr_handle,
2219 virtio_interrupt_handler,
2222 if (virtio_intr_enable(dev) < 0) {
2223 PMD_DRV_LOG(ERR, "interrupt enable failed");
2228 /*Notify the backend
2229 *Otherwise the tap backend might already stop its queue due to fullness.
2230 *vhost backend will have no chance to be waked up
2232 nb_queues = RTE_MAX(dev->data->nb_rx_queues, dev->data->nb_tx_queues);
2233 if (hw->max_queue_pairs > 1) {
2234 if (virtio_set_multiple_queues(dev, nb_queues) != 0)
2238 PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues);
2240 for (i = 0; i < dev->data->nb_rx_queues; i++) {
2241 rxvq = dev->data->rx_queues[i];
2242 /* Flush the old packets */
2243 virtqueue_rxvq_flush(rxvq->vq);
2244 virtqueue_notify(rxvq->vq);
2247 for (i = 0; i < dev->data->nb_tx_queues; i++) {
2248 txvq = dev->data->tx_queues[i];
2249 virtqueue_notify(txvq->vq);
2252 PMD_INIT_LOG(DEBUG, "Notified backend at initialization");
2254 for (i = 0; i < dev->data->nb_rx_queues; i++) {
2255 rxvq = dev->data->rx_queues[i];
2256 VIRTQUEUE_DUMP(rxvq->vq);
2259 for (i = 0; i < dev->data->nb_tx_queues; i++) {
2260 txvq = dev->data->tx_queues[i];
2261 VIRTQUEUE_DUMP(txvq->vq);
2264 set_rxtx_funcs(dev);
2267 /* Initialize Link state */
2268 virtio_dev_link_update(dev, 0);
2273 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev)
2275 struct virtio_hw *hw = dev->data->dev_private;
2276 uint16_t nr_vq = virtio_get_nr_vq(hw);
2277 const char *type __rte_unused;
2278 unsigned int i, mbuf_num = 0;
2279 struct virtqueue *vq;
2280 struct rte_mbuf *buf;
2283 if (hw->vqs == NULL)
2286 for (i = 0; i < nr_vq; i++) {
2291 queue_type = virtio_get_queue_type(hw, i);
2292 if (queue_type == VTNET_RQ)
2294 else if (queue_type == VTNET_TQ)
2300 "Before freeing %s[%d] used and unused buf",
2304 while ((buf = virtqueue_detach_unused(vq)) != NULL) {
2305 rte_pktmbuf_free(buf);
2310 "After freeing %s[%d] used and unused buf",
2315 PMD_INIT_LOG(DEBUG, "%d mbufs freed", mbuf_num);
2319 * Stop device: disable interrupt and mark link down
2322 virtio_dev_stop(struct rte_eth_dev *dev)
2324 struct virtio_hw *hw = dev->data->dev_private;
2325 struct rte_eth_link link;
2326 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf;
2328 PMD_INIT_LOG(DEBUG, "stop");
2329 dev->data->dev_started = 0;
2331 rte_spinlock_lock(&hw->state_lock);
2336 if (intr_conf->lsc || intr_conf->rxq) {
2337 virtio_intr_disable(dev);
2339 /* Reset interrupt callback */
2340 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) {
2341 rte_intr_callback_unregister(dev->intr_handle,
2342 virtio_interrupt_handler,
2347 memset(&link, 0, sizeof(link));
2348 rte_eth_linkstatus_set(dev, &link);
2350 rte_spinlock_unlock(&hw->state_lock);
2356 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete)
2358 struct rte_eth_link link;
2360 struct virtio_hw *hw = dev->data->dev_private;
2362 memset(&link, 0, sizeof(link));
2363 link.link_duplex = hw->duplex;
2364 link.link_speed = hw->speed;
2365 link.link_autoneg = ETH_LINK_AUTONEG;
2368 link.link_status = ETH_LINK_DOWN;
2369 link.link_speed = ETH_SPEED_NUM_NONE;
2370 } else if (virtio_with_feature(hw, VIRTIO_NET_F_STATUS)) {
2371 PMD_INIT_LOG(DEBUG, "Get link status from hw");
2372 virtio_read_dev_config(hw,
2373 offsetof(struct virtio_net_config, status),
2374 &status, sizeof(status));
2375 if ((status & VIRTIO_NET_S_LINK_UP) == 0) {
2376 link.link_status = ETH_LINK_DOWN;
2377 link.link_speed = ETH_SPEED_NUM_NONE;
2378 PMD_INIT_LOG(DEBUG, "Port %d is down",
2379 dev->data->port_id);
2381 link.link_status = ETH_LINK_UP;
2382 PMD_INIT_LOG(DEBUG, "Port %d is up",
2383 dev->data->port_id);
2386 link.link_status = ETH_LINK_UP;
2389 return rte_eth_linkstatus_set(dev, &link);
2393 virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask)
2395 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
2396 struct virtio_hw *hw = dev->data->dev_private;
2397 uint64_t offloads = rxmode->offloads;
2399 if (mask & ETH_VLAN_FILTER_MASK) {
2400 if ((offloads & DEV_RX_OFFLOAD_VLAN_FILTER) &&
2401 !virtio_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
2404 "vlan filtering not available on this host");
2410 if (mask & ETH_VLAN_STRIP_MASK)
2411 hw->vlan_strip = !!(offloads & DEV_RX_OFFLOAD_VLAN_STRIP);
2417 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
2419 uint64_t tso_mask, host_features;
2420 struct virtio_hw *hw = dev->data->dev_private;
2421 dev_info->speed_capa = virtio_dev_speed_capa_get(hw->speed);
2423 dev_info->max_rx_queues =
2424 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_RX_QUEUES);
2425 dev_info->max_tx_queues =
2426 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_TX_QUEUES);
2427 dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE;
2428 dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN;
2429 dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS;
2431 host_features = VIRTIO_OPS(hw)->get_features(hw);
2432 dev_info->rx_offload_capa = DEV_RX_OFFLOAD_VLAN_STRIP;
2433 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_JUMBO_FRAME;
2434 if (host_features & (1ULL << VIRTIO_NET_F_GUEST_CSUM)) {
2435 dev_info->rx_offload_capa |=
2436 DEV_RX_OFFLOAD_TCP_CKSUM |
2437 DEV_RX_OFFLOAD_UDP_CKSUM;
2439 if (host_features & (1ULL << VIRTIO_NET_F_CTRL_VLAN))
2440 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_VLAN_FILTER;
2441 tso_mask = (1ULL << VIRTIO_NET_F_GUEST_TSO4) |
2442 (1ULL << VIRTIO_NET_F_GUEST_TSO6);
2443 if ((host_features & tso_mask) == tso_mask)
2444 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_TCP_LRO;
2446 dev_info->tx_offload_capa = DEV_TX_OFFLOAD_MULTI_SEGS |
2447 DEV_TX_OFFLOAD_VLAN_INSERT;
2448 if (host_features & (1ULL << VIRTIO_NET_F_CSUM)) {
2449 dev_info->tx_offload_capa |=
2450 DEV_TX_OFFLOAD_UDP_CKSUM |
2451 DEV_TX_OFFLOAD_TCP_CKSUM;
2453 tso_mask = (1ULL << VIRTIO_NET_F_HOST_TSO4) |
2454 (1ULL << VIRTIO_NET_F_HOST_TSO6);
2455 if ((host_features & tso_mask) == tso_mask)
2456 dev_info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO;
2462 * It enables testpmd to collect per queue stats.
2465 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev,
2466 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx,
2467 __rte_unused uint8_t is_rx)
2472 RTE_LOG_REGISTER(virtio_logtype_init, pmd.net.virtio.init, NOTICE);
2473 RTE_LOG_REGISTER(virtio_logtype_driver, pmd.net.virtio.driver, NOTICE);