1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2016 Intel Corporation
11 #include <rte_ethdev_driver.h>
12 #include <rte_ethdev_pci.h>
13 #include <rte_memcpy.h>
14 #include <rte_string_fns.h>
15 #include <rte_memzone.h>
16 #include <rte_malloc.h>
17 #include <rte_branch_prediction.h>
19 #include <rte_bus_pci.h>
20 #include <rte_ether.h>
23 #include <rte_common.h>
24 #include <rte_errno.h>
25 #include <rte_cpuflags.h>
27 #include <rte_memory.h>
30 #include <rte_cycles.h>
31 #include <rte_kvargs.h>
33 #include "virtio_ethdev.h"
34 #include "virtio_pci.h"
35 #include "virtio_logs.h"
36 #include "virtqueue.h"
37 #include "virtio_rxtx.h"
39 static int eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev);
40 static int virtio_dev_configure(struct rte_eth_dev *dev);
41 static int virtio_dev_start(struct rte_eth_dev *dev);
42 static void virtio_dev_stop(struct rte_eth_dev *dev);
43 static void virtio_dev_promiscuous_enable(struct rte_eth_dev *dev);
44 static void virtio_dev_promiscuous_disable(struct rte_eth_dev *dev);
45 static void virtio_dev_allmulticast_enable(struct rte_eth_dev *dev);
46 static void virtio_dev_allmulticast_disable(struct rte_eth_dev *dev);
47 static void virtio_dev_info_get(struct rte_eth_dev *dev,
48 struct rte_eth_dev_info *dev_info);
49 static int virtio_dev_link_update(struct rte_eth_dev *dev,
50 int wait_to_complete);
51 static int virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask);
53 static void virtio_set_hwaddr(struct virtio_hw *hw);
54 static void virtio_get_hwaddr(struct virtio_hw *hw);
56 static int virtio_dev_stats_get(struct rte_eth_dev *dev,
57 struct rte_eth_stats *stats);
58 static int virtio_dev_xstats_get(struct rte_eth_dev *dev,
59 struct rte_eth_xstat *xstats, unsigned n);
60 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev,
61 struct rte_eth_xstat_name *xstats_names,
63 static void virtio_dev_stats_reset(struct rte_eth_dev *dev);
64 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev);
65 static int virtio_vlan_filter_set(struct rte_eth_dev *dev,
66 uint16_t vlan_id, int on);
67 static int virtio_mac_addr_add(struct rte_eth_dev *dev,
68 struct ether_addr *mac_addr,
69 uint32_t index, uint32_t vmdq);
70 static void virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index);
71 static int virtio_mac_addr_set(struct rte_eth_dev *dev,
72 struct ether_addr *mac_addr);
74 static int virtio_intr_disable(struct rte_eth_dev *dev);
76 static int virtio_dev_queue_stats_mapping_set(
77 struct rte_eth_dev *eth_dev,
82 int virtio_logtype_init;
83 int virtio_logtype_driver;
85 static void virtio_notify_peers(struct rte_eth_dev *dev);
86 static void virtio_ack_link_announce(struct rte_eth_dev *dev);
89 * The set of PCI devices this driver supports
91 static const struct rte_pci_id pci_id_virtio_map[] = {
92 { RTE_PCI_DEVICE(VIRTIO_PCI_VENDORID, VIRTIO_PCI_LEGACY_DEVICEID_NET) },
93 { RTE_PCI_DEVICE(VIRTIO_PCI_VENDORID, VIRTIO_PCI_MODERN_DEVICEID_NET) },
94 { .vendor_id = 0, /* sentinel */ },
97 struct rte_virtio_xstats_name_off {
98 char name[RTE_ETH_XSTATS_NAME_SIZE];
102 /* [rt]x_qX_ is prepended to the name string here */
103 static const struct rte_virtio_xstats_name_off rte_virtio_rxq_stat_strings[] = {
104 {"good_packets", offsetof(struct virtnet_rx, stats.packets)},
105 {"good_bytes", offsetof(struct virtnet_rx, stats.bytes)},
106 {"errors", offsetof(struct virtnet_rx, stats.errors)},
107 {"multicast_packets", offsetof(struct virtnet_rx, stats.multicast)},
108 {"broadcast_packets", offsetof(struct virtnet_rx, stats.broadcast)},
109 {"undersize_packets", offsetof(struct virtnet_rx, stats.size_bins[0])},
110 {"size_64_packets", offsetof(struct virtnet_rx, stats.size_bins[1])},
111 {"size_65_127_packets", offsetof(struct virtnet_rx, stats.size_bins[2])},
112 {"size_128_255_packets", offsetof(struct virtnet_rx, stats.size_bins[3])},
113 {"size_256_511_packets", offsetof(struct virtnet_rx, stats.size_bins[4])},
114 {"size_512_1023_packets", offsetof(struct virtnet_rx, stats.size_bins[5])},
115 {"size_1024_1518_packets", offsetof(struct virtnet_rx, stats.size_bins[6])},
116 {"size_1519_max_packets", offsetof(struct virtnet_rx, stats.size_bins[7])},
119 /* [rt]x_qX_ is prepended to the name string here */
120 static const struct rte_virtio_xstats_name_off rte_virtio_txq_stat_strings[] = {
121 {"good_packets", offsetof(struct virtnet_tx, stats.packets)},
122 {"good_bytes", offsetof(struct virtnet_tx, stats.bytes)},
123 {"errors", offsetof(struct virtnet_tx, stats.errors)},
124 {"multicast_packets", offsetof(struct virtnet_tx, stats.multicast)},
125 {"broadcast_packets", offsetof(struct virtnet_tx, stats.broadcast)},
126 {"undersize_packets", offsetof(struct virtnet_tx, stats.size_bins[0])},
127 {"size_64_packets", offsetof(struct virtnet_tx, stats.size_bins[1])},
128 {"size_65_127_packets", offsetof(struct virtnet_tx, stats.size_bins[2])},
129 {"size_128_255_packets", offsetof(struct virtnet_tx, stats.size_bins[3])},
130 {"size_256_511_packets", offsetof(struct virtnet_tx, stats.size_bins[4])},
131 {"size_512_1023_packets", offsetof(struct virtnet_tx, stats.size_bins[5])},
132 {"size_1024_1518_packets", offsetof(struct virtnet_tx, stats.size_bins[6])},
133 {"size_1519_max_packets", offsetof(struct virtnet_tx, stats.size_bins[7])},
136 #define VIRTIO_NB_RXQ_XSTATS (sizeof(rte_virtio_rxq_stat_strings) / \
137 sizeof(rte_virtio_rxq_stat_strings[0]))
138 #define VIRTIO_NB_TXQ_XSTATS (sizeof(rte_virtio_txq_stat_strings) / \
139 sizeof(rte_virtio_txq_stat_strings[0]))
141 struct virtio_hw_internal virtio_hw_internal[RTE_MAX_ETHPORTS];
143 static struct virtio_pmd_ctrl *
144 virtio_send_command_packed(struct virtnet_ctl *cvq,
145 struct virtio_pmd_ctrl *ctrl,
146 int *dlen, int pkt_num)
148 struct virtqueue *vq = cvq->vq;
150 struct vring_packed_desc *desc = vq->vq_packed.ring.desc;
151 struct virtio_pmd_ctrl *result;
158 * Format is enforced in qemu code:
159 * One TX packet for header;
160 * At least one TX packet per argument;
161 * One RX packet for ACK.
163 head = vq->vq_avail_idx;
164 flags = vq->vq_packed.cached_flags;
165 desc[head].addr = cvq->virtio_net_hdr_mem;
166 desc[head].len = sizeof(struct virtio_net_ctrl_hdr);
169 if (++vq->vq_avail_idx >= vq->vq_nentries) {
170 vq->vq_avail_idx -= vq->vq_nentries;
171 vq->vq_packed.cached_flags ^=
172 VRING_DESC_F_AVAIL(1) | VRING_DESC_F_USED(1);
175 for (k = 0; k < pkt_num; k++) {
176 desc[vq->vq_avail_idx].addr = cvq->virtio_net_hdr_mem
177 + sizeof(struct virtio_net_ctrl_hdr)
178 + sizeof(ctrl->status) + sizeof(uint8_t) * sum;
179 desc[vq->vq_avail_idx].len = dlen[k];
180 desc[vq->vq_avail_idx].flags = VRING_DESC_F_NEXT |
181 vq->vq_packed.cached_flags;
185 if (++vq->vq_avail_idx >= vq->vq_nentries) {
186 vq->vq_avail_idx -= vq->vq_nentries;
187 vq->vq_packed.cached_flags ^=
188 VRING_DESC_F_AVAIL(1) | VRING_DESC_F_USED(1);
192 desc[vq->vq_avail_idx].addr = cvq->virtio_net_hdr_mem
193 + sizeof(struct virtio_net_ctrl_hdr);
194 desc[vq->vq_avail_idx].len = sizeof(ctrl->status);
195 desc[vq->vq_avail_idx].flags = VRING_DESC_F_WRITE |
196 vq->vq_packed.cached_flags;
199 if (++vq->vq_avail_idx >= vq->vq_nentries) {
200 vq->vq_avail_idx -= vq->vq_nentries;
201 vq->vq_packed.cached_flags ^=
202 VRING_DESC_F_AVAIL(1) | VRING_DESC_F_USED(1);
205 virtio_wmb(vq->hw->weak_barriers);
206 desc[head].flags = VRING_DESC_F_NEXT | flags;
208 virtio_wmb(vq->hw->weak_barriers);
209 virtqueue_notify(vq);
211 /* wait for used descriptors in virtqueue */
212 while (!desc_is_used(&desc[head], vq))
215 virtio_rmb(vq->hw->weak_barriers);
217 /* now get used descriptors */
218 vq->vq_free_cnt += nb_descs;
219 vq->vq_used_cons_idx += nb_descs;
220 if (vq->vq_used_cons_idx >= vq->vq_nentries) {
221 vq->vq_used_cons_idx -= vq->vq_nentries;
222 vq->vq_packed.used_wrap_counter ^= 1;
225 PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\n"
226 "vq->vq_avail_idx=%d\n"
227 "vq->vq_used_cons_idx=%d\n"
228 "vq->vq_packed.cached_flags=0x%x\n"
229 "vq->vq_packed.used_wrap_counter=%d\n",
232 vq->vq_used_cons_idx,
233 vq->vq_packed.cached_flags,
234 vq->vq_packed.used_wrap_counter);
236 result = cvq->virtio_net_hdr_mz->addr;
240 static struct virtio_pmd_ctrl *
241 virtio_send_command_split(struct virtnet_ctl *cvq,
242 struct virtio_pmd_ctrl *ctrl,
243 int *dlen, int pkt_num)
245 struct virtio_pmd_ctrl *result;
246 struct virtqueue *vq = cvq->vq;
250 head = vq->vq_desc_head_idx;
253 * Format is enforced in qemu code:
254 * One TX packet for header;
255 * At least one TX packet per argument;
256 * One RX packet for ACK.
258 vq->vq_split.ring.desc[head].flags = VRING_DESC_F_NEXT;
259 vq->vq_split.ring.desc[head].addr = cvq->virtio_net_hdr_mem;
260 vq->vq_split.ring.desc[head].len = sizeof(struct virtio_net_ctrl_hdr);
262 i = vq->vq_split.ring.desc[head].next;
264 for (k = 0; k < pkt_num; k++) {
265 vq->vq_split.ring.desc[i].flags = VRING_DESC_F_NEXT;
266 vq->vq_split.ring.desc[i].addr = cvq->virtio_net_hdr_mem
267 + sizeof(struct virtio_net_ctrl_hdr)
268 + sizeof(ctrl->status) + sizeof(uint8_t)*sum;
269 vq->vq_split.ring.desc[i].len = dlen[k];
272 i = vq->vq_split.ring.desc[i].next;
275 vq->vq_split.ring.desc[i].flags = VRING_DESC_F_WRITE;
276 vq->vq_split.ring.desc[i].addr = cvq->virtio_net_hdr_mem
277 + sizeof(struct virtio_net_ctrl_hdr);
278 vq->vq_split.ring.desc[i].len = sizeof(ctrl->status);
281 vq->vq_desc_head_idx = vq->vq_split.ring.desc[i].next;
283 vq_update_avail_ring(vq, head);
284 vq_update_avail_idx(vq);
286 PMD_INIT_LOG(DEBUG, "vq->vq_queue_index = %d", vq->vq_queue_index);
288 virtqueue_notify(vq);
291 while (VIRTQUEUE_NUSED(vq) == 0) {
296 while (VIRTQUEUE_NUSED(vq)) {
297 uint32_t idx, desc_idx, used_idx;
298 struct vring_used_elem *uep;
300 used_idx = (uint32_t)(vq->vq_used_cons_idx
301 & (vq->vq_nentries - 1));
302 uep = &vq->vq_split.ring.used->ring[used_idx];
303 idx = (uint32_t) uep->id;
306 while (vq->vq_split.ring.desc[desc_idx].flags &
308 desc_idx = vq->vq_split.ring.desc[desc_idx].next;
312 vq->vq_split.ring.desc[desc_idx].next = vq->vq_desc_head_idx;
313 vq->vq_desc_head_idx = idx;
315 vq->vq_used_cons_idx++;
319 PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\nvq->vq_desc_head_idx=%d",
320 vq->vq_free_cnt, vq->vq_desc_head_idx);
322 result = cvq->virtio_net_hdr_mz->addr;
327 virtio_send_command(struct virtnet_ctl *cvq, struct virtio_pmd_ctrl *ctrl,
328 int *dlen, int pkt_num)
330 virtio_net_ctrl_ack status = ~0;
331 struct virtio_pmd_ctrl *result;
332 struct virtqueue *vq;
334 ctrl->status = status;
336 if (!cvq || !cvq->vq) {
337 PMD_INIT_LOG(ERR, "Control queue is not supported.");
341 rte_spinlock_lock(&cvq->lock);
344 PMD_INIT_LOG(DEBUG, "vq->vq_desc_head_idx = %d, status = %d, "
345 "vq->hw->cvq = %p vq = %p",
346 vq->vq_desc_head_idx, status, vq->hw->cvq, vq);
348 if (vq->vq_free_cnt < pkt_num + 2 || pkt_num < 1) {
349 rte_spinlock_unlock(&cvq->lock);
353 memcpy(cvq->virtio_net_hdr_mz->addr, ctrl,
354 sizeof(struct virtio_pmd_ctrl));
356 if (vtpci_packed_queue(vq->hw))
357 result = virtio_send_command_packed(cvq, ctrl, dlen, pkt_num);
359 result = virtio_send_command_split(cvq, ctrl, dlen, pkt_num);
361 rte_spinlock_unlock(&cvq->lock);
362 return result->status;
366 virtio_set_multiple_queues(struct rte_eth_dev *dev, uint16_t nb_queues)
368 struct virtio_hw *hw = dev->data->dev_private;
369 struct virtio_pmd_ctrl ctrl;
373 ctrl.hdr.class = VIRTIO_NET_CTRL_MQ;
374 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET;
375 memcpy(ctrl.data, &nb_queues, sizeof(uint16_t));
377 dlen[0] = sizeof(uint16_t);
379 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
381 PMD_INIT_LOG(ERR, "Multiqueue configured but send command "
382 "failed, this is too late now...");
390 virtio_dev_queue_release(void *queue __rte_unused)
396 virtio_get_nr_vq(struct virtio_hw *hw)
398 uint16_t nr_vq = hw->max_queue_pairs * 2;
400 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ))
407 virtio_init_vring(struct virtqueue *vq)
409 int size = vq->vq_nentries;
410 uint8_t *ring_mem = vq->vq_ring_virt_mem;
412 PMD_INIT_FUNC_TRACE();
414 memset(ring_mem, 0, vq->vq_ring_size);
416 vq->vq_used_cons_idx = 0;
417 vq->vq_desc_head_idx = 0;
418 vq->vq_avail_idx = 0;
419 vq->vq_desc_tail_idx = (uint16_t)(vq->vq_nentries - 1);
420 vq->vq_free_cnt = vq->vq_nentries;
421 memset(vq->vq_descx, 0, sizeof(struct vq_desc_extra) * vq->vq_nentries);
422 if (vtpci_packed_queue(vq->hw)) {
423 vring_init_packed(&vq->vq_packed.ring, ring_mem,
424 VIRTIO_PCI_VRING_ALIGN, size);
425 vring_desc_init_packed(vq, size);
427 struct vring *vr = &vq->vq_split.ring;
429 vring_init_split(vr, ring_mem, VIRTIO_PCI_VRING_ALIGN, size);
430 vring_desc_init_split(vr->desc, size);
433 * Disable device(host) interrupting guest
435 virtqueue_disable_intr(vq);
439 virtio_init_queue(struct rte_eth_dev *dev, uint16_t vtpci_queue_idx)
441 char vq_name[VIRTQUEUE_MAX_NAME_SZ];
442 char vq_hdr_name[VIRTQUEUE_MAX_NAME_SZ];
443 const struct rte_memzone *mz = NULL, *hdr_mz = NULL;
444 unsigned int vq_size, size;
445 struct virtio_hw *hw = dev->data->dev_private;
446 struct virtnet_rx *rxvq = NULL;
447 struct virtnet_tx *txvq = NULL;
448 struct virtnet_ctl *cvq = NULL;
449 struct virtqueue *vq;
450 size_t sz_hdr_mz = 0;
451 void *sw_ring = NULL;
452 int queue_type = virtio_get_queue_type(hw, vtpci_queue_idx);
454 int numa_node = dev->device->numa_node;
456 PMD_INIT_LOG(INFO, "setting up queue: %u on NUMA node %d",
457 vtpci_queue_idx, numa_node);
460 * Read the virtqueue size from the Queue Size field
461 * Always power of 2 and if 0 virtqueue does not exist
463 vq_size = VTPCI_OPS(hw)->get_queue_num(hw, vtpci_queue_idx);
464 PMD_INIT_LOG(DEBUG, "vq_size: %u", vq_size);
466 PMD_INIT_LOG(ERR, "virtqueue does not exist");
470 if (!rte_is_power_of_2(vq_size)) {
471 PMD_INIT_LOG(ERR, "virtqueue size is not powerof 2");
475 snprintf(vq_name, sizeof(vq_name), "port%d_vq%d",
476 dev->data->port_id, vtpci_queue_idx);
478 size = RTE_ALIGN_CEIL(sizeof(*vq) +
479 vq_size * sizeof(struct vq_desc_extra),
480 RTE_CACHE_LINE_SIZE);
481 if (queue_type == VTNET_TQ) {
483 * For each xmit packet, allocate a virtio_net_hdr
484 * and indirect ring elements
486 sz_hdr_mz = vq_size * sizeof(struct virtio_tx_region);
487 } else if (queue_type == VTNET_CQ) {
488 /* Allocate a page for control vq command, data and status */
489 sz_hdr_mz = PAGE_SIZE;
492 vq = rte_zmalloc_socket(vq_name, size, RTE_CACHE_LINE_SIZE,
495 PMD_INIT_LOG(ERR, "can not allocate vq");
498 hw->vqs[vtpci_queue_idx] = vq;
501 vq->vq_queue_index = vtpci_queue_idx;
502 vq->vq_nentries = vq_size;
503 if (vtpci_packed_queue(hw)) {
504 vq->vq_packed.used_wrap_counter = 1;
505 vq->vq_packed.cached_flags = VRING_DESC_F_AVAIL(1);
506 vq->vq_packed.event_flags_shadow = 0;
507 if (queue_type == VTNET_RQ)
508 vq->vq_packed.cached_flags |= VRING_DESC_F_WRITE;
512 * Reserve a memzone for vring elements
514 size = vring_size(hw, vq_size, VIRTIO_PCI_VRING_ALIGN);
515 vq->vq_ring_size = RTE_ALIGN_CEIL(size, VIRTIO_PCI_VRING_ALIGN);
516 PMD_INIT_LOG(DEBUG, "vring_size: %d, rounded_vring_size: %d",
517 size, vq->vq_ring_size);
519 mz = rte_memzone_reserve_aligned(vq_name, vq->vq_ring_size,
520 numa_node, RTE_MEMZONE_IOVA_CONTIG,
521 VIRTIO_PCI_VRING_ALIGN);
523 if (rte_errno == EEXIST)
524 mz = rte_memzone_lookup(vq_name);
531 memset(mz->addr, 0, mz->len);
533 vq->vq_ring_mem = mz->iova;
534 vq->vq_ring_virt_mem = mz->addr;
535 PMD_INIT_LOG(DEBUG, "vq->vq_ring_mem: 0x%" PRIx64,
537 PMD_INIT_LOG(DEBUG, "vq->vq_ring_virt_mem: 0x%" PRIx64,
538 (uint64_t)(uintptr_t)mz->addr);
540 virtio_init_vring(vq);
543 snprintf(vq_hdr_name, sizeof(vq_hdr_name), "port%d_vq%d_hdr",
544 dev->data->port_id, vtpci_queue_idx);
545 hdr_mz = rte_memzone_reserve_aligned(vq_hdr_name, sz_hdr_mz,
546 numa_node, RTE_MEMZONE_IOVA_CONTIG,
547 RTE_CACHE_LINE_SIZE);
548 if (hdr_mz == NULL) {
549 if (rte_errno == EEXIST)
550 hdr_mz = rte_memzone_lookup(vq_hdr_name);
551 if (hdr_mz == NULL) {
558 if (queue_type == VTNET_RQ) {
559 size_t sz_sw = (RTE_PMD_VIRTIO_RX_MAX_BURST + vq_size) *
560 sizeof(vq->sw_ring[0]);
562 sw_ring = rte_zmalloc_socket("sw_ring", sz_sw,
563 RTE_CACHE_LINE_SIZE, numa_node);
565 PMD_INIT_LOG(ERR, "can not allocate RX soft ring");
570 vq->sw_ring = sw_ring;
573 rxvq->port_id = dev->data->port_id;
575 } else if (queue_type == VTNET_TQ) {
578 txvq->port_id = dev->data->port_id;
580 txvq->virtio_net_hdr_mz = hdr_mz;
581 txvq->virtio_net_hdr_mem = hdr_mz->iova;
582 } else if (queue_type == VTNET_CQ) {
586 cvq->virtio_net_hdr_mz = hdr_mz;
587 cvq->virtio_net_hdr_mem = hdr_mz->iova;
588 memset(cvq->virtio_net_hdr_mz->addr, 0, PAGE_SIZE);
593 /* For virtio_user case (that is when hw->dev is NULL), we use
594 * virtual address. And we need properly set _offset_, please see
595 * VIRTIO_MBUF_DATA_DMA_ADDR in virtqueue.h for more information.
597 if (!hw->virtio_user_dev)
598 vq->offset = offsetof(struct rte_mbuf, buf_iova);
600 vq->vq_ring_mem = (uintptr_t)mz->addr;
601 vq->offset = offsetof(struct rte_mbuf, buf_addr);
602 if (queue_type == VTNET_TQ)
603 txvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr;
604 else if (queue_type == VTNET_CQ)
605 cvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr;
608 if (queue_type == VTNET_TQ) {
609 struct virtio_tx_region *txr;
613 memset(txr, 0, vq_size * sizeof(*txr));
614 for (i = 0; i < vq_size; i++) {
615 struct vring_desc *start_dp = txr[i].tx_indir;
617 /* first indirect descriptor is always the tx header */
618 if (!vtpci_packed_queue(hw)) {
619 vring_desc_init_split(start_dp,
620 RTE_DIM(txr[i].tx_indir));
621 start_dp->addr = txvq->virtio_net_hdr_mem
623 + offsetof(struct virtio_tx_region,
625 start_dp->len = hw->vtnet_hdr_size;
626 start_dp->flags = VRING_DESC_F_NEXT;
631 if (VTPCI_OPS(hw)->setup_queue(hw, vq) < 0) {
632 PMD_INIT_LOG(ERR, "setup_queue failed");
640 rte_memzone_free(hdr_mz);
641 rte_memzone_free(mz);
648 virtio_free_queues(struct virtio_hw *hw)
650 uint16_t nr_vq = virtio_get_nr_vq(hw);
651 struct virtqueue *vq;
658 for (i = 0; i < nr_vq; i++) {
663 queue_type = virtio_get_queue_type(hw, i);
664 if (queue_type == VTNET_RQ) {
665 rte_free(vq->sw_ring);
666 rte_memzone_free(vq->rxq.mz);
667 } else if (queue_type == VTNET_TQ) {
668 rte_memzone_free(vq->txq.mz);
669 rte_memzone_free(vq->txq.virtio_net_hdr_mz);
671 rte_memzone_free(vq->cq.mz);
672 rte_memzone_free(vq->cq.virtio_net_hdr_mz);
684 virtio_alloc_queues(struct rte_eth_dev *dev)
686 struct virtio_hw *hw = dev->data->dev_private;
687 uint16_t nr_vq = virtio_get_nr_vq(hw);
691 hw->vqs = rte_zmalloc(NULL, sizeof(struct virtqueue *) * nr_vq, 0);
693 PMD_INIT_LOG(ERR, "failed to allocate vqs");
697 for (i = 0; i < nr_vq; i++) {
698 ret = virtio_init_queue(dev, i);
700 virtio_free_queues(hw);
708 static void virtio_queues_unbind_intr(struct rte_eth_dev *dev);
711 virtio_dev_close(struct rte_eth_dev *dev)
713 struct virtio_hw *hw = dev->data->dev_private;
714 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf;
716 PMD_INIT_LOG(DEBUG, "virtio_dev_close");
723 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
724 VTPCI_OPS(hw)->set_config_irq(hw, VIRTIO_MSI_NO_VECTOR);
726 virtio_queues_unbind_intr(dev);
728 if (intr_conf->lsc || intr_conf->rxq) {
729 virtio_intr_disable(dev);
730 rte_intr_efd_disable(dev->intr_handle);
731 rte_free(dev->intr_handle->intr_vec);
732 dev->intr_handle->intr_vec = NULL;
736 virtio_dev_free_mbufs(dev);
737 virtio_free_queues(hw);
741 virtio_dev_promiscuous_enable(struct rte_eth_dev *dev)
743 struct virtio_hw *hw = dev->data->dev_private;
744 struct virtio_pmd_ctrl ctrl;
748 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
749 PMD_INIT_LOG(INFO, "host does not support rx control");
753 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
754 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
758 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
760 PMD_INIT_LOG(ERR, "Failed to enable promisc");
764 virtio_dev_promiscuous_disable(struct rte_eth_dev *dev)
766 struct virtio_hw *hw = dev->data->dev_private;
767 struct virtio_pmd_ctrl ctrl;
771 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
772 PMD_INIT_LOG(INFO, "host does not support rx control");
776 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
777 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
781 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
783 PMD_INIT_LOG(ERR, "Failed to disable promisc");
787 virtio_dev_allmulticast_enable(struct rte_eth_dev *dev)
789 struct virtio_hw *hw = dev->data->dev_private;
790 struct virtio_pmd_ctrl ctrl;
794 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
795 PMD_INIT_LOG(INFO, "host does not support rx control");
799 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
800 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
804 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
806 PMD_INIT_LOG(ERR, "Failed to enable allmulticast");
810 virtio_dev_allmulticast_disable(struct rte_eth_dev *dev)
812 struct virtio_hw *hw = dev->data->dev_private;
813 struct virtio_pmd_ctrl ctrl;
817 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
818 PMD_INIT_LOG(INFO, "host does not support rx control");
822 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
823 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
827 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
829 PMD_INIT_LOG(ERR, "Failed to disable allmulticast");
832 #define VLAN_TAG_LEN 4 /* 802.3ac tag (not DMA'd) */
834 virtio_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
836 struct virtio_hw *hw = dev->data->dev_private;
837 uint32_t ether_hdr_len = ETHER_HDR_LEN + VLAN_TAG_LEN +
839 uint32_t frame_size = mtu + ether_hdr_len;
840 uint32_t max_frame_size = hw->max_mtu + ether_hdr_len;
842 max_frame_size = RTE_MIN(max_frame_size, VIRTIO_MAX_RX_PKTLEN);
844 if (mtu < ETHER_MIN_MTU || frame_size > max_frame_size) {
845 PMD_INIT_LOG(ERR, "MTU should be between %d and %d",
846 ETHER_MIN_MTU, max_frame_size - ether_hdr_len);
853 virtio_dev_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id)
855 struct virtio_hw *hw = dev->data->dev_private;
856 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id];
857 struct virtqueue *vq = rxvq->vq;
859 virtqueue_enable_intr(vq);
860 virtio_mb(hw->weak_barriers);
865 virtio_dev_rx_queue_intr_disable(struct rte_eth_dev *dev, uint16_t queue_id)
867 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id];
868 struct virtqueue *vq = rxvq->vq;
870 virtqueue_disable_intr(vq);
875 * dev_ops for virtio, bare necessities for basic operation
877 static const struct eth_dev_ops virtio_eth_dev_ops = {
878 .dev_configure = virtio_dev_configure,
879 .dev_start = virtio_dev_start,
880 .dev_stop = virtio_dev_stop,
881 .dev_close = virtio_dev_close,
882 .promiscuous_enable = virtio_dev_promiscuous_enable,
883 .promiscuous_disable = virtio_dev_promiscuous_disable,
884 .allmulticast_enable = virtio_dev_allmulticast_enable,
885 .allmulticast_disable = virtio_dev_allmulticast_disable,
886 .mtu_set = virtio_mtu_set,
887 .dev_infos_get = virtio_dev_info_get,
888 .stats_get = virtio_dev_stats_get,
889 .xstats_get = virtio_dev_xstats_get,
890 .xstats_get_names = virtio_dev_xstats_get_names,
891 .stats_reset = virtio_dev_stats_reset,
892 .xstats_reset = virtio_dev_stats_reset,
893 .link_update = virtio_dev_link_update,
894 .vlan_offload_set = virtio_dev_vlan_offload_set,
895 .rx_queue_setup = virtio_dev_rx_queue_setup,
896 .rx_queue_intr_enable = virtio_dev_rx_queue_intr_enable,
897 .rx_queue_intr_disable = virtio_dev_rx_queue_intr_disable,
898 .rx_queue_release = virtio_dev_queue_release,
899 .rx_descriptor_done = virtio_dev_rx_queue_done,
900 .tx_queue_setup = virtio_dev_tx_queue_setup,
901 .tx_queue_release = virtio_dev_queue_release,
902 /* collect stats per queue */
903 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set,
904 .vlan_filter_set = virtio_vlan_filter_set,
905 .mac_addr_add = virtio_mac_addr_add,
906 .mac_addr_remove = virtio_mac_addr_remove,
907 .mac_addr_set = virtio_mac_addr_set,
911 * dev_ops for virtio-user in secondary processes, as we just have
912 * some limited supports currently.
914 const struct eth_dev_ops virtio_user_secondary_eth_dev_ops = {
915 .dev_infos_get = virtio_dev_info_get,
916 .stats_get = virtio_dev_stats_get,
917 .xstats_get = virtio_dev_xstats_get,
918 .xstats_get_names = virtio_dev_xstats_get_names,
919 .stats_reset = virtio_dev_stats_reset,
920 .xstats_reset = virtio_dev_stats_reset,
921 /* collect stats per queue */
922 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set,
926 virtio_update_stats(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
930 for (i = 0; i < dev->data->nb_tx_queues; i++) {
931 const struct virtnet_tx *txvq = dev->data->tx_queues[i];
935 stats->opackets += txvq->stats.packets;
936 stats->obytes += txvq->stats.bytes;
937 stats->oerrors += txvq->stats.errors;
939 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
940 stats->q_opackets[i] = txvq->stats.packets;
941 stats->q_obytes[i] = txvq->stats.bytes;
945 for (i = 0; i < dev->data->nb_rx_queues; i++) {
946 const struct virtnet_rx *rxvq = dev->data->rx_queues[i];
950 stats->ipackets += rxvq->stats.packets;
951 stats->ibytes += rxvq->stats.bytes;
952 stats->ierrors += rxvq->stats.errors;
954 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
955 stats->q_ipackets[i] = rxvq->stats.packets;
956 stats->q_ibytes[i] = rxvq->stats.bytes;
960 stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed;
963 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev,
964 struct rte_eth_xstat_name *xstats_names,
965 __rte_unused unsigned limit)
971 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS +
972 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS;
974 if (xstats_names != NULL) {
975 /* Note: limit checked in rte_eth_xstats_names() */
977 for (i = 0; i < dev->data->nb_rx_queues; i++) {
978 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
981 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) {
982 snprintf(xstats_names[count].name,
983 sizeof(xstats_names[count].name),
985 rte_virtio_rxq_stat_strings[t].name);
990 for (i = 0; i < dev->data->nb_tx_queues; i++) {
991 struct virtnet_tx *txvq = dev->data->tx_queues[i];
994 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) {
995 snprintf(xstats_names[count].name,
996 sizeof(xstats_names[count].name),
998 rte_virtio_txq_stat_strings[t].name);
1008 virtio_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats,
1014 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS +
1015 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS;
1020 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1021 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
1028 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) {
1029 xstats[count].value = *(uint64_t *)(((char *)rxvq) +
1030 rte_virtio_rxq_stat_strings[t].offset);
1031 xstats[count].id = count;
1036 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1037 struct virtnet_tx *txvq = dev->data->tx_queues[i];
1044 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) {
1045 xstats[count].value = *(uint64_t *)(((char *)txvq) +
1046 rte_virtio_txq_stat_strings[t].offset);
1047 xstats[count].id = count;
1056 virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
1058 virtio_update_stats(dev, stats);
1064 virtio_dev_stats_reset(struct rte_eth_dev *dev)
1068 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1069 struct virtnet_tx *txvq = dev->data->tx_queues[i];
1073 txvq->stats.packets = 0;
1074 txvq->stats.bytes = 0;
1075 txvq->stats.errors = 0;
1076 txvq->stats.multicast = 0;
1077 txvq->stats.broadcast = 0;
1078 memset(txvq->stats.size_bins, 0,
1079 sizeof(txvq->stats.size_bins[0]) * 8);
1082 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1083 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
1087 rxvq->stats.packets = 0;
1088 rxvq->stats.bytes = 0;
1089 rxvq->stats.errors = 0;
1090 rxvq->stats.multicast = 0;
1091 rxvq->stats.broadcast = 0;
1092 memset(rxvq->stats.size_bins, 0,
1093 sizeof(rxvq->stats.size_bins[0]) * 8);
1098 virtio_set_hwaddr(struct virtio_hw *hw)
1100 vtpci_write_dev_config(hw,
1101 offsetof(struct virtio_net_config, mac),
1102 &hw->mac_addr, ETHER_ADDR_LEN);
1106 virtio_get_hwaddr(struct virtio_hw *hw)
1108 if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) {
1109 vtpci_read_dev_config(hw,
1110 offsetof(struct virtio_net_config, mac),
1111 &hw->mac_addr, ETHER_ADDR_LEN);
1113 eth_random_addr(&hw->mac_addr[0]);
1114 virtio_set_hwaddr(hw);
1119 virtio_mac_table_set(struct virtio_hw *hw,
1120 const struct virtio_net_ctrl_mac *uc,
1121 const struct virtio_net_ctrl_mac *mc)
1123 struct virtio_pmd_ctrl ctrl;
1126 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
1127 PMD_DRV_LOG(INFO, "host does not support mac table");
1131 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
1132 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET;
1134 len[0] = uc->entries * ETHER_ADDR_LEN + sizeof(uc->entries);
1135 memcpy(ctrl.data, uc, len[0]);
1137 len[1] = mc->entries * ETHER_ADDR_LEN + sizeof(mc->entries);
1138 memcpy(ctrl.data + len[0], mc, len[1]);
1140 err = virtio_send_command(hw->cvq, &ctrl, len, 2);
1142 PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err);
1147 virtio_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac_addr,
1148 uint32_t index, uint32_t vmdq __rte_unused)
1150 struct virtio_hw *hw = dev->data->dev_private;
1151 const struct ether_addr *addrs = dev->data->mac_addrs;
1153 struct virtio_net_ctrl_mac *uc, *mc;
1155 if (index >= VIRTIO_MAX_MAC_ADDRS) {
1156 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
1160 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
1162 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
1165 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
1166 const struct ether_addr *addr
1167 = (i == index) ? mac_addr : addrs + i;
1168 struct virtio_net_ctrl_mac *tbl
1169 = is_multicast_ether_addr(addr) ? mc : uc;
1171 memcpy(&tbl->macs[tbl->entries++], addr, 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 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 * ETHER_ADDR_LEN + sizeof(uc->entries));
1192 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
1195 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
1196 struct virtio_net_ctrl_mac *tbl;
1198 if (i == index || is_zero_ether_addr(addrs + i))
1201 tbl = is_multicast_ether_addr(addrs + i) ? mc : uc;
1202 memcpy(&tbl->macs[tbl->entries++], addrs + i, ETHER_ADDR_LEN);
1205 virtio_mac_table_set(hw, uc, mc);
1209 virtio_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr)
1211 struct virtio_hw *hw = dev->data->dev_private;
1213 memcpy(hw->mac_addr, mac_addr, ETHER_ADDR_LEN);
1215 /* Use atomic update if available */
1216 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
1217 struct virtio_pmd_ctrl ctrl;
1218 int len = ETHER_ADDR_LEN;
1220 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
1221 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET;
1223 memcpy(ctrl.data, mac_addr, ETHER_ADDR_LEN);
1224 return virtio_send_command(hw->cvq, &ctrl, &len, 1);
1227 if (!vtpci_with_feature(hw, VIRTIO_NET_F_MAC))
1230 virtio_set_hwaddr(hw);
1235 virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
1237 struct virtio_hw *hw = dev->data->dev_private;
1238 struct virtio_pmd_ctrl ctrl;
1241 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN))
1244 ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN;
1245 ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL;
1246 memcpy(ctrl.data, &vlan_id, sizeof(vlan_id));
1247 len = sizeof(vlan_id);
1249 return virtio_send_command(hw->cvq, &ctrl, &len, 1);
1253 virtio_intr_enable(struct rte_eth_dev *dev)
1255 struct virtio_hw *hw = dev->data->dev_private;
1257 if (rte_intr_enable(dev->intr_handle) < 0)
1260 if (!hw->virtio_user_dev)
1261 hw->use_msix = vtpci_msix_detect(RTE_ETH_DEV_TO_PCI(dev));
1267 virtio_intr_disable(struct rte_eth_dev *dev)
1269 struct virtio_hw *hw = dev->data->dev_private;
1271 if (rte_intr_disable(dev->intr_handle) < 0)
1274 if (!hw->virtio_user_dev)
1275 hw->use_msix = vtpci_msix_detect(RTE_ETH_DEV_TO_PCI(dev));
1281 virtio_negotiate_features(struct virtio_hw *hw, uint64_t req_features)
1283 uint64_t host_features;
1285 /* Prepare guest_features: feature that driver wants to support */
1286 PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %" PRIx64,
1289 /* Read device(host) feature bits */
1290 host_features = VTPCI_OPS(hw)->get_features(hw);
1291 PMD_INIT_LOG(DEBUG, "host_features before negotiate = %" PRIx64,
1294 /* If supported, ensure MTU value is valid before acknowledging it. */
1295 if (host_features & req_features & (1ULL << VIRTIO_NET_F_MTU)) {
1296 struct virtio_net_config config;
1298 vtpci_read_dev_config(hw,
1299 offsetof(struct virtio_net_config, mtu),
1300 &config.mtu, sizeof(config.mtu));
1302 if (config.mtu < ETHER_MIN_MTU)
1303 req_features &= ~(1ULL << VIRTIO_NET_F_MTU);
1307 * Negotiate features: Subset of device feature bits are written back
1308 * guest feature bits.
1310 hw->guest_features = req_features;
1311 hw->guest_features = vtpci_negotiate_features(hw, host_features);
1312 PMD_INIT_LOG(DEBUG, "features after negotiate = %" PRIx64,
1313 hw->guest_features);
1316 if (!vtpci_with_feature(hw, VIRTIO_F_VERSION_1)) {
1318 "VIRTIO_F_VERSION_1 features is not enabled.");
1321 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_FEATURES_OK);
1322 if (!(vtpci_get_status(hw) & VIRTIO_CONFIG_STATUS_FEATURES_OK)) {
1324 "failed to set FEATURES_OK status!");
1329 hw->req_guest_features = req_features;
1335 virtio_dev_pause(struct rte_eth_dev *dev)
1337 struct virtio_hw *hw = dev->data->dev_private;
1339 rte_spinlock_lock(&hw->state_lock);
1341 if (hw->started == 0) {
1342 /* Device is just stopped. */
1343 rte_spinlock_unlock(&hw->state_lock);
1348 * Prevent the worker threads from touching queues to avoid contention,
1349 * 1 ms should be enough for the ongoing Tx function to finish.
1356 * Recover hw state to let the worker threads continue.
1359 virtio_dev_resume(struct rte_eth_dev *dev)
1361 struct virtio_hw *hw = dev->data->dev_private;
1364 rte_spinlock_unlock(&hw->state_lock);
1368 * Should be called only after device is paused.
1371 virtio_inject_pkts(struct rte_eth_dev *dev, struct rte_mbuf **tx_pkts,
1374 struct virtio_hw *hw = dev->data->dev_private;
1375 struct virtnet_tx *txvq = dev->data->tx_queues[0];
1378 hw->inject_pkts = tx_pkts;
1379 ret = dev->tx_pkt_burst(txvq, tx_pkts, nb_pkts);
1380 hw->inject_pkts = NULL;
1386 virtio_notify_peers(struct rte_eth_dev *dev)
1388 struct virtio_hw *hw = dev->data->dev_private;
1389 struct virtnet_rx *rxvq;
1390 struct rte_mbuf *rarp_mbuf;
1392 if (!dev->data->rx_queues)
1395 rxvq = dev->data->rx_queues[0];
1399 rarp_mbuf = rte_net_make_rarp_packet(rxvq->mpool,
1400 (struct ether_addr *)hw->mac_addr);
1401 if (rarp_mbuf == NULL) {
1402 PMD_DRV_LOG(ERR, "failed to make RARP packet.");
1406 /* If virtio port just stopped, no need to send RARP */
1407 if (virtio_dev_pause(dev) < 0) {
1408 rte_pktmbuf_free(rarp_mbuf);
1412 virtio_inject_pkts(dev, &rarp_mbuf, 1);
1413 virtio_dev_resume(dev);
1417 virtio_ack_link_announce(struct rte_eth_dev *dev)
1419 struct virtio_hw *hw = dev->data->dev_private;
1420 struct virtio_pmd_ctrl ctrl;
1422 ctrl.hdr.class = VIRTIO_NET_CTRL_ANNOUNCE;
1423 ctrl.hdr.cmd = VIRTIO_NET_CTRL_ANNOUNCE_ACK;
1425 virtio_send_command(hw->cvq, &ctrl, NULL, 0);
1429 * Process virtio config changed interrupt. Call the callback
1430 * if link state changed, generate gratuitous RARP packet if
1431 * the status indicates an ANNOUNCE.
1434 virtio_interrupt_handler(void *param)
1436 struct rte_eth_dev *dev = param;
1437 struct virtio_hw *hw = dev->data->dev_private;
1441 /* Read interrupt status which clears interrupt */
1442 isr = vtpci_isr(hw);
1443 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr);
1445 if (virtio_intr_enable(dev) < 0)
1446 PMD_DRV_LOG(ERR, "interrupt enable failed");
1448 if (isr & VIRTIO_PCI_ISR_CONFIG) {
1449 if (virtio_dev_link_update(dev, 0) == 0)
1450 _rte_eth_dev_callback_process(dev,
1451 RTE_ETH_EVENT_INTR_LSC,
1454 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1455 vtpci_read_dev_config(hw,
1456 offsetof(struct virtio_net_config, status),
1457 &status, sizeof(status));
1458 if (status & VIRTIO_NET_S_ANNOUNCE) {
1459 virtio_notify_peers(dev);
1461 virtio_ack_link_announce(dev);
1467 /* set rx and tx handlers according to what is supported */
1469 set_rxtx_funcs(struct rte_eth_dev *eth_dev)
1471 struct virtio_hw *hw = eth_dev->data->dev_private;
1473 if (vtpci_packed_queue(hw)) {
1475 "virtio: using packed ring %s Tx path on port %u",
1476 hw->use_inorder_tx ? "inorder" : "standard",
1477 eth_dev->data->port_id);
1478 eth_dev->tx_pkt_burst = virtio_xmit_pkts_packed;
1480 if (hw->use_inorder_tx) {
1481 PMD_INIT_LOG(INFO, "virtio: using inorder Tx path on port %u",
1482 eth_dev->data->port_id);
1483 eth_dev->tx_pkt_burst = virtio_xmit_pkts_inorder;
1485 PMD_INIT_LOG(INFO, "virtio: using standard Tx path on port %u",
1486 eth_dev->data->port_id);
1487 eth_dev->tx_pkt_burst = virtio_xmit_pkts;
1491 if (vtpci_packed_queue(hw)) {
1492 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
1494 "virtio: using packed ring mergeable buffer Rx path on port %u",
1495 eth_dev->data->port_id);
1496 eth_dev->rx_pkt_burst =
1497 &virtio_recv_mergeable_pkts_packed;
1500 "virtio: using packed ring standard Rx path on port %u",
1501 eth_dev->data->port_id);
1502 eth_dev->rx_pkt_burst = &virtio_recv_pkts_packed;
1505 if (hw->use_simple_rx) {
1506 PMD_INIT_LOG(INFO, "virtio: using simple Rx path on port %u",
1507 eth_dev->data->port_id);
1508 eth_dev->rx_pkt_burst = virtio_recv_pkts_vec;
1509 } else if (hw->use_inorder_rx) {
1511 "virtio: using inorder Rx path on port %u",
1512 eth_dev->data->port_id);
1513 eth_dev->rx_pkt_burst = &virtio_recv_pkts_inorder;
1514 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
1516 "virtio: using mergeable buffer Rx path on port %u",
1517 eth_dev->data->port_id);
1518 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts;
1520 PMD_INIT_LOG(INFO, "virtio: using standard Rx path on port %u",
1521 eth_dev->data->port_id);
1522 eth_dev->rx_pkt_burst = &virtio_recv_pkts;
1528 /* Only support 1:1 queue/interrupt mapping so far.
1529 * TODO: support n:1 queue/interrupt mapping when there are limited number of
1530 * interrupt vectors (<N+1).
1533 virtio_queues_bind_intr(struct rte_eth_dev *dev)
1536 struct virtio_hw *hw = dev->data->dev_private;
1538 PMD_INIT_LOG(INFO, "queue/interrupt binding");
1539 for (i = 0; i < dev->data->nb_rx_queues; ++i) {
1540 dev->intr_handle->intr_vec[i] = i + 1;
1541 if (VTPCI_OPS(hw)->set_queue_irq(hw, hw->vqs[i * 2], i + 1) ==
1542 VIRTIO_MSI_NO_VECTOR) {
1543 PMD_DRV_LOG(ERR, "failed to set queue vector");
1552 virtio_queues_unbind_intr(struct rte_eth_dev *dev)
1555 struct virtio_hw *hw = dev->data->dev_private;
1557 PMD_INIT_LOG(INFO, "queue/interrupt unbinding");
1558 for (i = 0; i < dev->data->nb_rx_queues; ++i)
1559 VTPCI_OPS(hw)->set_queue_irq(hw,
1560 hw->vqs[i * VTNET_CQ],
1561 VIRTIO_MSI_NO_VECTOR);
1565 virtio_configure_intr(struct rte_eth_dev *dev)
1567 struct virtio_hw *hw = dev->data->dev_private;
1569 if (!rte_intr_cap_multiple(dev->intr_handle)) {
1570 PMD_INIT_LOG(ERR, "Multiple intr vector not supported");
1574 if (rte_intr_efd_enable(dev->intr_handle, dev->data->nb_rx_queues)) {
1575 PMD_INIT_LOG(ERR, "Fail to create eventfd");
1579 if (!dev->intr_handle->intr_vec) {
1580 dev->intr_handle->intr_vec =
1581 rte_zmalloc("intr_vec",
1582 hw->max_queue_pairs * sizeof(int), 0);
1583 if (!dev->intr_handle->intr_vec) {
1584 PMD_INIT_LOG(ERR, "Failed to allocate %u rxq vectors",
1585 hw->max_queue_pairs);
1590 /* Re-register callback to update max_intr */
1591 rte_intr_callback_unregister(dev->intr_handle,
1592 virtio_interrupt_handler,
1594 rte_intr_callback_register(dev->intr_handle,
1595 virtio_interrupt_handler,
1598 /* DO NOT try to remove this! This function will enable msix, or QEMU
1599 * will encounter SIGSEGV when DRIVER_OK is sent.
1600 * And for legacy devices, this should be done before queue/vec binding
1601 * to change the config size from 20 to 24, or VIRTIO_MSI_QUEUE_VECTOR
1602 * (22) will be ignored.
1604 if (virtio_intr_enable(dev) < 0) {
1605 PMD_DRV_LOG(ERR, "interrupt enable failed");
1609 if (virtio_queues_bind_intr(dev) < 0) {
1610 PMD_INIT_LOG(ERR, "Failed to bind queue/interrupt");
1617 /* reset device and renegotiate features if needed */
1619 virtio_init_device(struct rte_eth_dev *eth_dev, uint64_t req_features)
1621 struct virtio_hw *hw = eth_dev->data->dev_private;
1622 struct virtio_net_config *config;
1623 struct virtio_net_config local_config;
1624 struct rte_pci_device *pci_dev = NULL;
1627 /* Reset the device although not necessary at startup */
1631 virtio_dev_free_mbufs(eth_dev);
1632 virtio_free_queues(hw);
1635 /* Tell the host we've noticed this device. */
1636 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_ACK);
1638 /* Tell the host we've known how to drive the device. */
1639 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER);
1640 if (virtio_negotiate_features(hw, req_features) < 0)
1643 hw->weak_barriers = !vtpci_with_feature(hw, VIRTIO_F_ORDER_PLATFORM);
1645 if (!hw->virtio_user_dev) {
1646 pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
1647 rte_eth_copy_pci_info(eth_dev, pci_dev);
1650 /* If host does not support both status and MSI-X then disable LSC */
1651 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS) &&
1652 hw->use_msix != VIRTIO_MSIX_NONE)
1653 eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC;
1655 eth_dev->data->dev_flags &= ~RTE_ETH_DEV_INTR_LSC;
1657 /* Setting up rx_header size for the device */
1658 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF) ||
1659 vtpci_with_feature(hw, VIRTIO_F_VERSION_1) ||
1660 vtpci_with_feature(hw, VIRTIO_F_RING_PACKED))
1661 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf);
1663 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr);
1665 /* Copy the permanent MAC address to: virtio_hw */
1666 virtio_get_hwaddr(hw);
1667 ether_addr_copy((struct ether_addr *) hw->mac_addr,
1668 ð_dev->data->mac_addrs[0]);
1670 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1671 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2],
1672 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]);
1674 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) {
1675 config = &local_config;
1677 vtpci_read_dev_config(hw,
1678 offsetof(struct virtio_net_config, mac),
1679 &config->mac, sizeof(config->mac));
1681 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1682 vtpci_read_dev_config(hw,
1683 offsetof(struct virtio_net_config, status),
1684 &config->status, sizeof(config->status));
1687 "VIRTIO_NET_F_STATUS is not supported");
1691 if (vtpci_with_feature(hw, VIRTIO_NET_F_MQ)) {
1692 vtpci_read_dev_config(hw,
1693 offsetof(struct virtio_net_config, max_virtqueue_pairs),
1694 &config->max_virtqueue_pairs,
1695 sizeof(config->max_virtqueue_pairs));
1698 "VIRTIO_NET_F_MQ is not supported");
1699 config->max_virtqueue_pairs = 1;
1702 hw->max_queue_pairs = config->max_virtqueue_pairs;
1704 if (vtpci_with_feature(hw, VIRTIO_NET_F_MTU)) {
1705 vtpci_read_dev_config(hw,
1706 offsetof(struct virtio_net_config, mtu),
1708 sizeof(config->mtu));
1711 * MTU value has already been checked at negotiation
1712 * time, but check again in case it has changed since
1713 * then, which should not happen.
1715 if (config->mtu < ETHER_MIN_MTU) {
1716 PMD_INIT_LOG(ERR, "invalid max MTU value (%u)",
1721 hw->max_mtu = config->mtu;
1722 /* Set initial MTU to maximum one supported by vhost */
1723 eth_dev->data->mtu = config->mtu;
1726 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - ETHER_HDR_LEN -
1727 VLAN_TAG_LEN - hw->vtnet_hdr_size;
1730 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d",
1731 config->max_virtqueue_pairs);
1732 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status);
1734 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1735 config->mac[0], config->mac[1],
1736 config->mac[2], config->mac[3],
1737 config->mac[4], config->mac[5]);
1739 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=1");
1740 hw->max_queue_pairs = 1;
1741 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - ETHER_HDR_LEN -
1742 VLAN_TAG_LEN - hw->vtnet_hdr_size;
1745 ret = virtio_alloc_queues(eth_dev);
1749 if (eth_dev->data->dev_conf.intr_conf.rxq) {
1750 if (virtio_configure_intr(eth_dev) < 0) {
1751 PMD_INIT_LOG(ERR, "failed to configure interrupt");
1756 vtpci_reinit_complete(hw);
1759 PMD_INIT_LOG(DEBUG, "port %d vendorID=0x%x deviceID=0x%x",
1760 eth_dev->data->port_id, pci_dev->id.vendor_id,
1761 pci_dev->id.device_id);
1767 * Remap the PCI device again (IO port map for legacy device and
1768 * memory map for modern device), so that the secondary process
1769 * could have the PCI initiated correctly.
1772 virtio_remap_pci(struct rte_pci_device *pci_dev, struct virtio_hw *hw)
1776 * We don't have to re-parse the PCI config space, since
1777 * rte_pci_map_device() makes sure the mapped address
1778 * in secondary process would equal to the one mapped in
1779 * the primary process: error will be returned if that
1780 * requirement is not met.
1782 * That said, we could simply reuse all cap pointers
1783 * (such as dev_cfg, common_cfg, etc.) parsed from the
1784 * primary process, which is stored in shared memory.
1786 if (rte_pci_map_device(pci_dev)) {
1787 PMD_INIT_LOG(DEBUG, "failed to map pci device!");
1791 if (rte_pci_ioport_map(pci_dev, 0, VTPCI_IO(hw)) < 0)
1799 virtio_set_vtpci_ops(struct virtio_hw *hw)
1801 #ifdef RTE_VIRTIO_USER
1802 if (hw->virtio_user_dev)
1803 VTPCI_OPS(hw) = &virtio_user_ops;
1807 VTPCI_OPS(hw) = &modern_ops;
1809 VTPCI_OPS(hw) = &legacy_ops;
1813 * This function is based on probe() function in virtio_pci.c
1814 * It returns 0 on success.
1817 eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
1819 struct virtio_hw *hw = eth_dev->data->dev_private;
1822 RTE_BUILD_BUG_ON(RTE_PKTMBUF_HEADROOM < sizeof(struct virtio_net_hdr_mrg_rxbuf));
1824 eth_dev->dev_ops = &virtio_eth_dev_ops;
1826 if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
1827 if (!hw->virtio_user_dev) {
1828 ret = virtio_remap_pci(RTE_ETH_DEV_TO_PCI(eth_dev), hw);
1833 virtio_set_vtpci_ops(hw);
1834 set_rxtx_funcs(eth_dev);
1839 /* Allocate memory for storing MAC addresses */
1840 eth_dev->data->mac_addrs = rte_zmalloc("virtio", VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN, 0);
1841 if (eth_dev->data->mac_addrs == NULL) {
1843 "Failed to allocate %d bytes needed to store MAC addresses",
1844 VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN);
1848 hw->port_id = eth_dev->data->port_id;
1849 /* For virtio_user case the hw->virtio_user_dev is populated by
1850 * virtio_user_eth_dev_alloc() before eth_virtio_dev_init() is called.
1852 if (!hw->virtio_user_dev) {
1853 ret = vtpci_init(RTE_ETH_DEV_TO_PCI(eth_dev), hw);
1858 /* reset device and negotiate default features */
1859 ret = virtio_init_device(eth_dev, VIRTIO_PMD_DEFAULT_GUEST_FEATURES);
1866 rte_free(eth_dev->data->mac_addrs);
1871 eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev)
1873 PMD_INIT_FUNC_TRACE();
1875 if (rte_eal_process_type() == RTE_PROC_SECONDARY)
1878 virtio_dev_stop(eth_dev);
1879 virtio_dev_close(eth_dev);
1881 eth_dev->dev_ops = NULL;
1882 eth_dev->tx_pkt_burst = NULL;
1883 eth_dev->rx_pkt_burst = NULL;
1885 if (eth_dev->device)
1886 rte_pci_unmap_device(RTE_ETH_DEV_TO_PCI(eth_dev));
1888 PMD_INIT_LOG(DEBUG, "dev_uninit completed");
1893 static int vdpa_check_handler(__rte_unused const char *key,
1894 const char *value, __rte_unused void *opaque)
1896 if (strcmp(value, "1"))
1903 vdpa_mode_selected(struct rte_devargs *devargs)
1905 struct rte_kvargs *kvlist;
1906 const char *key = "vdpa";
1909 if (devargs == NULL)
1912 kvlist = rte_kvargs_parse(devargs->args, NULL);
1916 if (!rte_kvargs_count(kvlist, key))
1919 /* vdpa mode selected when there's a key-value pair: vdpa=1 */
1920 if (rte_kvargs_process(kvlist, key,
1921 vdpa_check_handler, NULL) < 0) {
1927 rte_kvargs_free(kvlist);
1931 static int eth_virtio_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
1932 struct rte_pci_device *pci_dev)
1934 if (rte_eal_iopl_init() != 0) {
1935 PMD_INIT_LOG(ERR, "IOPL call failed - cannot use virtio PMD");
1939 /* virtio pmd skips probe if device needs to work in vdpa mode */
1940 if (vdpa_mode_selected(pci_dev->device.devargs))
1943 return rte_eth_dev_pci_generic_probe(pci_dev, sizeof(struct virtio_hw),
1944 eth_virtio_dev_init);
1947 static int eth_virtio_pci_remove(struct rte_pci_device *pci_dev)
1949 return rte_eth_dev_pci_generic_remove(pci_dev, eth_virtio_dev_uninit);
1952 static struct rte_pci_driver rte_virtio_pmd = {
1954 .name = "net_virtio",
1956 .id_table = pci_id_virtio_map,
1958 .probe = eth_virtio_pci_probe,
1959 .remove = eth_virtio_pci_remove,
1962 RTE_INIT(rte_virtio_pmd_init)
1964 rte_eal_iopl_init();
1965 rte_pci_register(&rte_virtio_pmd);
1969 rx_offload_enabled(struct virtio_hw *hw)
1971 return vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM) ||
1972 vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) ||
1973 vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6);
1977 tx_offload_enabled(struct virtio_hw *hw)
1979 return vtpci_with_feature(hw, VIRTIO_NET_F_CSUM) ||
1980 vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO4) ||
1981 vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO6);
1985 * Configure virtio device
1986 * It returns 0 on success.
1989 virtio_dev_configure(struct rte_eth_dev *dev)
1991 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
1992 const struct rte_eth_txmode *txmode = &dev->data->dev_conf.txmode;
1993 struct virtio_hw *hw = dev->data->dev_private;
1994 uint32_t ether_hdr_len = ETHER_HDR_LEN + VLAN_TAG_LEN +
1996 uint64_t rx_offloads = rxmode->offloads;
1997 uint64_t tx_offloads = txmode->offloads;
1998 uint64_t req_features;
2001 PMD_INIT_LOG(DEBUG, "configure");
2002 req_features = VIRTIO_PMD_DEFAULT_GUEST_FEATURES;
2004 if (dev->data->dev_conf.intr_conf.rxq) {
2005 ret = virtio_init_device(dev, hw->req_guest_features);
2010 if (rxmode->max_rx_pkt_len > hw->max_mtu + ether_hdr_len)
2011 req_features &= ~(1ULL << VIRTIO_NET_F_MTU);
2013 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM |
2014 DEV_RX_OFFLOAD_TCP_CKSUM))
2015 req_features |= (1ULL << VIRTIO_NET_F_GUEST_CSUM);
2017 if (rx_offloads & DEV_RX_OFFLOAD_TCP_LRO)
2019 (1ULL << VIRTIO_NET_F_GUEST_TSO4) |
2020 (1ULL << VIRTIO_NET_F_GUEST_TSO6);
2022 if (tx_offloads & (DEV_TX_OFFLOAD_UDP_CKSUM |
2023 DEV_TX_OFFLOAD_TCP_CKSUM))
2024 req_features |= (1ULL << VIRTIO_NET_F_CSUM);
2026 if (tx_offloads & DEV_TX_OFFLOAD_TCP_TSO)
2028 (1ULL << VIRTIO_NET_F_HOST_TSO4) |
2029 (1ULL << VIRTIO_NET_F_HOST_TSO6);
2031 /* if request features changed, reinit the device */
2032 if (req_features != hw->req_guest_features) {
2033 ret = virtio_init_device(dev, req_features);
2038 if ((rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM |
2039 DEV_RX_OFFLOAD_TCP_CKSUM)) &&
2040 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM)) {
2042 "rx checksum not available on this host");
2046 if ((rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) &&
2047 (!vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) ||
2048 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6))) {
2050 "Large Receive Offload not available on this host");
2054 /* start control queue */
2055 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ))
2056 virtio_dev_cq_start(dev);
2058 if (rx_offloads & DEV_RX_OFFLOAD_VLAN_STRIP)
2061 if ((rx_offloads & DEV_RX_OFFLOAD_VLAN_FILTER)
2062 && !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
2064 "vlan filtering not available on this host");
2068 hw->has_tx_offload = tx_offload_enabled(hw);
2069 hw->has_rx_offload = rx_offload_enabled(hw);
2071 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
2072 /* Enable vector (0) for Link State Intrerrupt */
2073 if (VTPCI_OPS(hw)->set_config_irq(hw, 0) ==
2074 VIRTIO_MSI_NO_VECTOR) {
2075 PMD_DRV_LOG(ERR, "failed to set config vector");
2079 rte_spinlock_init(&hw->state_lock);
2081 hw->use_simple_rx = 1;
2083 if (vtpci_with_feature(hw, VIRTIO_F_IN_ORDER)) {
2084 hw->use_inorder_tx = 1;
2085 hw->use_inorder_rx = 1;
2086 hw->use_simple_rx = 0;
2089 if (vtpci_packed_queue(hw)) {
2090 hw->use_simple_rx = 0;
2091 hw->use_inorder_rx = 0;
2094 #if defined RTE_ARCH_ARM64 || defined RTE_ARCH_ARM
2095 if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON)) {
2096 hw->use_simple_rx = 0;
2099 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
2100 hw->use_simple_rx = 0;
2103 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM |
2104 DEV_RX_OFFLOAD_TCP_CKSUM |
2105 DEV_RX_OFFLOAD_TCP_LRO |
2106 DEV_RX_OFFLOAD_VLAN_STRIP))
2107 hw->use_simple_rx = 0;
2116 virtio_dev_start(struct rte_eth_dev *dev)
2118 uint16_t nb_queues, i;
2119 struct virtnet_rx *rxvq;
2120 struct virtnet_tx *txvq __rte_unused;
2121 struct virtio_hw *hw = dev->data->dev_private;
2124 /* Finish the initialization of the queues */
2125 for (i = 0; i < dev->data->nb_rx_queues; i++) {
2126 ret = virtio_dev_rx_queue_setup_finish(dev, i);
2130 for (i = 0; i < dev->data->nb_tx_queues; i++) {
2131 ret = virtio_dev_tx_queue_setup_finish(dev, i);
2136 /* check if lsc interrupt feature is enabled */
2137 if (dev->data->dev_conf.intr_conf.lsc) {
2138 if (!(dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)) {
2139 PMD_DRV_LOG(ERR, "link status not supported by host");
2144 /* Enable uio/vfio intr/eventfd mapping: althrough we already did that
2145 * in device configure, but it could be unmapped when device is
2148 if (dev->data->dev_conf.intr_conf.lsc ||
2149 dev->data->dev_conf.intr_conf.rxq) {
2150 virtio_intr_disable(dev);
2152 /* Setup interrupt callback */
2153 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
2154 rte_intr_callback_register(dev->intr_handle,
2155 virtio_interrupt_handler,
2158 if (virtio_intr_enable(dev) < 0) {
2159 PMD_DRV_LOG(ERR, "interrupt enable failed");
2164 /*Notify the backend
2165 *Otherwise the tap backend might already stop its queue due to fullness.
2166 *vhost backend will have no chance to be waked up
2168 nb_queues = RTE_MAX(dev->data->nb_rx_queues, dev->data->nb_tx_queues);
2169 if (hw->max_queue_pairs > 1) {
2170 if (virtio_set_multiple_queues(dev, nb_queues) != 0)
2174 PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues);
2176 for (i = 0; i < dev->data->nb_rx_queues; i++) {
2177 rxvq = dev->data->rx_queues[i];
2178 /* Flush the old packets */
2179 virtqueue_rxvq_flush(rxvq->vq);
2180 virtqueue_notify(rxvq->vq);
2183 for (i = 0; i < dev->data->nb_tx_queues; i++) {
2184 txvq = dev->data->tx_queues[i];
2185 virtqueue_notify(txvq->vq);
2188 PMD_INIT_LOG(DEBUG, "Notified backend at initialization");
2190 for (i = 0; i < dev->data->nb_rx_queues; i++) {
2191 rxvq = dev->data->rx_queues[i];
2192 VIRTQUEUE_DUMP(rxvq->vq);
2195 for (i = 0; i < dev->data->nb_tx_queues; i++) {
2196 txvq = dev->data->tx_queues[i];
2197 VIRTQUEUE_DUMP(txvq->vq);
2200 set_rxtx_funcs(dev);
2203 /* Initialize Link state */
2204 virtio_dev_link_update(dev, 0);
2209 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev)
2211 struct virtio_hw *hw = dev->data->dev_private;
2212 uint16_t nr_vq = virtio_get_nr_vq(hw);
2213 const char *type __rte_unused;
2214 unsigned int i, mbuf_num = 0;
2215 struct virtqueue *vq;
2216 struct rte_mbuf *buf;
2219 if (hw->vqs == NULL)
2222 for (i = 0; i < nr_vq; i++) {
2227 queue_type = virtio_get_queue_type(hw, i);
2228 if (queue_type == VTNET_RQ)
2230 else if (queue_type == VTNET_TQ)
2236 "Before freeing %s[%d] used and unused buf",
2240 while ((buf = virtqueue_detach_unused(vq)) != NULL) {
2241 rte_pktmbuf_free(buf);
2246 "After freeing %s[%d] used and unused buf",
2251 PMD_INIT_LOG(DEBUG, "%d mbufs freed", mbuf_num);
2255 * Stop device: disable interrupt and mark link down
2258 virtio_dev_stop(struct rte_eth_dev *dev)
2260 struct virtio_hw *hw = dev->data->dev_private;
2261 struct rte_eth_link link;
2262 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf;
2264 PMD_INIT_LOG(DEBUG, "stop");
2266 rte_spinlock_lock(&hw->state_lock);
2269 hw->started = false;
2271 if (intr_conf->lsc || intr_conf->rxq) {
2272 virtio_intr_disable(dev);
2274 /* Reset interrupt callback */
2275 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) {
2276 rte_intr_callback_unregister(dev->intr_handle,
2277 virtio_interrupt_handler,
2282 memset(&link, 0, sizeof(link));
2283 rte_eth_linkstatus_set(dev, &link);
2285 rte_spinlock_unlock(&hw->state_lock);
2289 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete)
2291 struct rte_eth_link link;
2293 struct virtio_hw *hw = dev->data->dev_private;
2295 memset(&link, 0, sizeof(link));
2296 link.link_duplex = ETH_LINK_FULL_DUPLEX;
2297 link.link_speed = ETH_SPEED_NUM_10G;
2298 link.link_autoneg = ETH_LINK_FIXED;
2301 link.link_status = ETH_LINK_DOWN;
2302 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
2303 PMD_INIT_LOG(DEBUG, "Get link status from hw");
2304 vtpci_read_dev_config(hw,
2305 offsetof(struct virtio_net_config, status),
2306 &status, sizeof(status));
2307 if ((status & VIRTIO_NET_S_LINK_UP) == 0) {
2308 link.link_status = ETH_LINK_DOWN;
2309 PMD_INIT_LOG(DEBUG, "Port %d is down",
2310 dev->data->port_id);
2312 link.link_status = ETH_LINK_UP;
2313 PMD_INIT_LOG(DEBUG, "Port %d is up",
2314 dev->data->port_id);
2317 link.link_status = ETH_LINK_UP;
2320 return rte_eth_linkstatus_set(dev, &link);
2324 virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask)
2326 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
2327 struct virtio_hw *hw = dev->data->dev_private;
2328 uint64_t offloads = rxmode->offloads;
2330 if (mask & ETH_VLAN_FILTER_MASK) {
2331 if ((offloads & DEV_RX_OFFLOAD_VLAN_FILTER) &&
2332 !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
2335 "vlan filtering not available on this host");
2341 if (mask & ETH_VLAN_STRIP_MASK)
2342 hw->vlan_strip = !!(offloads & DEV_RX_OFFLOAD_VLAN_STRIP);
2348 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
2350 uint64_t tso_mask, host_features;
2351 struct virtio_hw *hw = dev->data->dev_private;
2353 dev_info->speed_capa = ETH_LINK_SPEED_10G; /* fake value */
2355 dev_info->max_rx_queues =
2356 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_RX_QUEUES);
2357 dev_info->max_tx_queues =
2358 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_TX_QUEUES);
2359 dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE;
2360 dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN;
2361 dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS;
2363 host_features = VTPCI_OPS(hw)->get_features(hw);
2364 dev_info->rx_offload_capa = DEV_RX_OFFLOAD_VLAN_STRIP;
2365 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_JUMBO_FRAME;
2366 if (host_features & (1ULL << VIRTIO_NET_F_GUEST_CSUM)) {
2367 dev_info->rx_offload_capa |=
2368 DEV_RX_OFFLOAD_TCP_CKSUM |
2369 DEV_RX_OFFLOAD_UDP_CKSUM;
2371 if (host_features & (1ULL << VIRTIO_NET_F_CTRL_VLAN))
2372 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_VLAN_FILTER;
2373 tso_mask = (1ULL << VIRTIO_NET_F_GUEST_TSO4) |
2374 (1ULL << VIRTIO_NET_F_GUEST_TSO6);
2375 if ((host_features & tso_mask) == tso_mask)
2376 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_TCP_LRO;
2378 dev_info->tx_offload_capa = DEV_TX_OFFLOAD_MULTI_SEGS |
2379 DEV_TX_OFFLOAD_VLAN_INSERT;
2380 if (host_features & (1ULL << VIRTIO_NET_F_CSUM)) {
2381 dev_info->tx_offload_capa |=
2382 DEV_TX_OFFLOAD_UDP_CKSUM |
2383 DEV_TX_OFFLOAD_TCP_CKSUM;
2385 tso_mask = (1ULL << VIRTIO_NET_F_HOST_TSO4) |
2386 (1ULL << VIRTIO_NET_F_HOST_TSO6);
2387 if ((host_features & tso_mask) == tso_mask)
2388 dev_info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO;
2392 * It enables testpmd to collect per queue stats.
2395 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev,
2396 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx,
2397 __rte_unused uint8_t is_rx)
2402 RTE_PMD_EXPORT_NAME(net_virtio, __COUNTER__);
2403 RTE_PMD_REGISTER_PCI_TABLE(net_virtio, pci_id_virtio_map);
2404 RTE_PMD_REGISTER_KMOD_DEP(net_virtio, "* igb_uio | uio_pci_generic | vfio-pci");
2406 RTE_INIT(virtio_init_log)
2408 virtio_logtype_init = rte_log_register("pmd.net.virtio.init");
2409 if (virtio_logtype_init >= 0)
2410 rte_log_set_level(virtio_logtype_init, RTE_LOG_NOTICE);
2411 virtio_logtype_driver = rte_log_register("pmd.net.virtio.driver");
2412 if (virtio_logtype_driver >= 0)
2413 rte_log_set_level(virtio_logtype_driver, RTE_LOG_NOTICE);