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_enable(struct rte_eth_dev *dev);
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 int virtio_logtype_init;
84 int virtio_logtype_driver;
86 static void virtio_notify_peers(struct rte_eth_dev *dev);
87 static void virtio_ack_link_announce(struct rte_eth_dev *dev);
90 * The set of PCI devices this driver supports
92 static const struct rte_pci_id pci_id_virtio_map[] = {
93 { RTE_PCI_DEVICE(VIRTIO_PCI_VENDORID, VIRTIO_PCI_LEGACY_DEVICEID_NET) },
94 { RTE_PCI_DEVICE(VIRTIO_PCI_VENDORID, VIRTIO_PCI_MODERN_DEVICEID_NET) },
95 { .vendor_id = 0, /* sentinel */ },
98 struct rte_virtio_xstats_name_off {
99 char name[RTE_ETH_XSTATS_NAME_SIZE];
103 /* [rt]x_qX_ is prepended to the name string here */
104 static const struct rte_virtio_xstats_name_off rte_virtio_rxq_stat_strings[] = {
105 {"good_packets", offsetof(struct virtnet_rx, stats.packets)},
106 {"good_bytes", offsetof(struct virtnet_rx, stats.bytes)},
107 {"errors", offsetof(struct virtnet_rx, stats.errors)},
108 {"multicast_packets", offsetof(struct virtnet_rx, stats.multicast)},
109 {"broadcast_packets", offsetof(struct virtnet_rx, stats.broadcast)},
110 {"undersize_packets", offsetof(struct virtnet_rx, stats.size_bins[0])},
111 {"size_64_packets", offsetof(struct virtnet_rx, stats.size_bins[1])},
112 {"size_65_127_packets", offsetof(struct virtnet_rx, stats.size_bins[2])},
113 {"size_128_255_packets", offsetof(struct virtnet_rx, stats.size_bins[3])},
114 {"size_256_511_packets", offsetof(struct virtnet_rx, stats.size_bins[4])},
115 {"size_512_1023_packets", offsetof(struct virtnet_rx, stats.size_bins[5])},
116 {"size_1024_1518_packets", offsetof(struct virtnet_rx, stats.size_bins[6])},
117 {"size_1519_max_packets", offsetof(struct virtnet_rx, stats.size_bins[7])},
120 /* [rt]x_qX_ is prepended to the name string here */
121 static const struct rte_virtio_xstats_name_off rte_virtio_txq_stat_strings[] = {
122 {"good_packets", offsetof(struct virtnet_tx, stats.packets)},
123 {"good_bytes", offsetof(struct virtnet_tx, stats.bytes)},
124 {"errors", offsetof(struct virtnet_tx, stats.errors)},
125 {"multicast_packets", offsetof(struct virtnet_tx, stats.multicast)},
126 {"broadcast_packets", offsetof(struct virtnet_tx, stats.broadcast)},
127 {"undersize_packets", offsetof(struct virtnet_tx, stats.size_bins[0])},
128 {"size_64_packets", offsetof(struct virtnet_tx, stats.size_bins[1])},
129 {"size_65_127_packets", offsetof(struct virtnet_tx, stats.size_bins[2])},
130 {"size_128_255_packets", offsetof(struct virtnet_tx, stats.size_bins[3])},
131 {"size_256_511_packets", offsetof(struct virtnet_tx, stats.size_bins[4])},
132 {"size_512_1023_packets", offsetof(struct virtnet_tx, stats.size_bins[5])},
133 {"size_1024_1518_packets", offsetof(struct virtnet_tx, stats.size_bins[6])},
134 {"size_1519_max_packets", offsetof(struct virtnet_tx, stats.size_bins[7])},
137 #define VIRTIO_NB_RXQ_XSTATS (sizeof(rte_virtio_rxq_stat_strings) / \
138 sizeof(rte_virtio_rxq_stat_strings[0]))
139 #define VIRTIO_NB_TXQ_XSTATS (sizeof(rte_virtio_txq_stat_strings) / \
140 sizeof(rte_virtio_txq_stat_strings[0]))
142 struct virtio_hw_internal virtio_hw_internal[RTE_MAX_ETHPORTS];
145 virtio_send_command(struct virtnet_ctl *cvq, struct virtio_pmd_ctrl *ctrl,
146 int *dlen, int pkt_num)
150 virtio_net_ctrl_ack status = ~0;
151 struct virtio_pmd_ctrl *result;
152 struct virtqueue *vq;
154 ctrl->status = status;
156 if (!cvq || !cvq->vq) {
157 PMD_INIT_LOG(ERR, "Control queue is not supported.");
161 rte_spinlock_lock(&cvq->lock);
163 head = vq->vq_desc_head_idx;
165 PMD_INIT_LOG(DEBUG, "vq->vq_desc_head_idx = %d, status = %d, "
166 "vq->hw->cvq = %p vq = %p",
167 vq->vq_desc_head_idx, status, vq->hw->cvq, vq);
169 if (vq->vq_free_cnt < pkt_num + 2 || pkt_num < 1) {
170 rte_spinlock_unlock(&cvq->lock);
174 memcpy(cvq->virtio_net_hdr_mz->addr, ctrl,
175 sizeof(struct virtio_pmd_ctrl));
178 * Format is enforced in qemu code:
179 * One TX packet for header;
180 * At least one TX packet per argument;
181 * One RX packet for ACK.
183 vq->vq_ring.desc[head].flags = VRING_DESC_F_NEXT;
184 vq->vq_ring.desc[head].addr = cvq->virtio_net_hdr_mem;
185 vq->vq_ring.desc[head].len = sizeof(struct virtio_net_ctrl_hdr);
187 i = vq->vq_ring.desc[head].next;
189 for (k = 0; k < pkt_num; k++) {
190 vq->vq_ring.desc[i].flags = VRING_DESC_F_NEXT;
191 vq->vq_ring.desc[i].addr = cvq->virtio_net_hdr_mem
192 + sizeof(struct virtio_net_ctrl_hdr)
193 + sizeof(ctrl->status) + sizeof(uint8_t)*sum;
194 vq->vq_ring.desc[i].len = dlen[k];
197 i = vq->vq_ring.desc[i].next;
200 vq->vq_ring.desc[i].flags = VRING_DESC_F_WRITE;
201 vq->vq_ring.desc[i].addr = cvq->virtio_net_hdr_mem
202 + sizeof(struct virtio_net_ctrl_hdr);
203 vq->vq_ring.desc[i].len = sizeof(ctrl->status);
206 vq->vq_desc_head_idx = vq->vq_ring.desc[i].next;
208 vq_update_avail_ring(vq, head);
209 vq_update_avail_idx(vq);
211 PMD_INIT_LOG(DEBUG, "vq->vq_queue_index = %d", vq->vq_queue_index);
213 virtqueue_notify(vq);
216 while (VIRTQUEUE_NUSED(vq) == 0) {
221 while (VIRTQUEUE_NUSED(vq)) {
222 uint32_t idx, desc_idx, used_idx;
223 struct vring_used_elem *uep;
225 used_idx = (uint32_t)(vq->vq_used_cons_idx
226 & (vq->vq_nentries - 1));
227 uep = &vq->vq_ring.used->ring[used_idx];
228 idx = (uint32_t) uep->id;
231 while (vq->vq_ring.desc[desc_idx].flags & VRING_DESC_F_NEXT) {
232 desc_idx = vq->vq_ring.desc[desc_idx].next;
236 vq->vq_ring.desc[desc_idx].next = vq->vq_desc_head_idx;
237 vq->vq_desc_head_idx = idx;
239 vq->vq_used_cons_idx++;
243 PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\nvq->vq_desc_head_idx=%d",
244 vq->vq_free_cnt, vq->vq_desc_head_idx);
246 result = cvq->virtio_net_hdr_mz->addr;
248 rte_spinlock_unlock(&cvq->lock);
249 return result->status;
253 virtio_set_multiple_queues(struct rte_eth_dev *dev, uint16_t nb_queues)
255 struct virtio_hw *hw = dev->data->dev_private;
256 struct virtio_pmd_ctrl ctrl;
260 ctrl.hdr.class = VIRTIO_NET_CTRL_MQ;
261 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET;
262 memcpy(ctrl.data, &nb_queues, sizeof(uint16_t));
264 dlen[0] = sizeof(uint16_t);
266 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
268 PMD_INIT_LOG(ERR, "Multiqueue configured but send command "
269 "failed, this is too late now...");
277 virtio_dev_queue_release(void *queue __rte_unused)
283 virtio_get_nr_vq(struct virtio_hw *hw)
285 uint16_t nr_vq = hw->max_queue_pairs * 2;
287 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ))
294 virtio_init_vring(struct virtqueue *vq)
296 int size = vq->vq_nentries;
297 struct vring *vr = &vq->vq_ring;
298 uint8_t *ring_mem = vq->vq_ring_virt_mem;
300 PMD_INIT_FUNC_TRACE();
302 memset(ring_mem, 0, vq->vq_ring_size);
304 vq->vq_used_cons_idx = 0;
305 vq->vq_desc_head_idx = 0;
306 vq->vq_avail_idx = 0;
307 vq->vq_desc_tail_idx = (uint16_t)(vq->vq_nentries - 1);
308 vq->vq_free_cnt = vq->vq_nentries;
309 memset(vq->vq_descx, 0, sizeof(struct vq_desc_extra) * vq->vq_nentries);
310 if (vtpci_packed_queue(vq->hw)) {
311 vring_init_packed(&vq->ring_packed, ring_mem,
312 VIRTIO_PCI_VRING_ALIGN, size);
313 vring_desc_init_packed(vq, size);
315 vring_init_split(vr, ring_mem, VIRTIO_PCI_VRING_ALIGN, size);
316 vring_desc_init_split(vr->desc, size);
319 * Disable device(host) interrupting guest
321 virtqueue_disable_intr(vq);
325 virtio_init_queue(struct rte_eth_dev *dev, uint16_t vtpci_queue_idx)
327 char vq_name[VIRTQUEUE_MAX_NAME_SZ];
328 char vq_hdr_name[VIRTQUEUE_MAX_NAME_SZ];
329 const struct rte_memzone *mz = NULL, *hdr_mz = NULL;
330 unsigned int vq_size, size;
331 struct virtio_hw *hw = dev->data->dev_private;
332 struct virtnet_rx *rxvq = NULL;
333 struct virtnet_tx *txvq = NULL;
334 struct virtnet_ctl *cvq = NULL;
335 struct virtqueue *vq;
336 size_t sz_hdr_mz = 0;
337 void *sw_ring = NULL;
338 int queue_type = virtio_get_queue_type(hw, vtpci_queue_idx);
340 int numa_node = dev->device->numa_node;
342 PMD_INIT_LOG(INFO, "setting up queue: %u on NUMA node %d",
343 vtpci_queue_idx, numa_node);
346 * Read the virtqueue size from the Queue Size field
347 * Always power of 2 and if 0 virtqueue does not exist
349 vq_size = VTPCI_OPS(hw)->get_queue_num(hw, vtpci_queue_idx);
350 PMD_INIT_LOG(DEBUG, "vq_size: %u", vq_size);
352 PMD_INIT_LOG(ERR, "virtqueue does not exist");
356 if (!rte_is_power_of_2(vq_size)) {
357 PMD_INIT_LOG(ERR, "virtqueue size is not powerof 2");
361 snprintf(vq_name, sizeof(vq_name), "port%d_vq%d",
362 dev->data->port_id, vtpci_queue_idx);
364 size = RTE_ALIGN_CEIL(sizeof(*vq) +
365 vq_size * sizeof(struct vq_desc_extra),
366 RTE_CACHE_LINE_SIZE);
367 if (queue_type == VTNET_TQ) {
369 * For each xmit packet, allocate a virtio_net_hdr
370 * and indirect ring elements
372 sz_hdr_mz = vq_size * sizeof(struct virtio_tx_region);
373 } else if (queue_type == VTNET_CQ) {
374 /* Allocate a page for control vq command, data and status */
375 sz_hdr_mz = PAGE_SIZE;
378 vq = rte_zmalloc_socket(vq_name, size, RTE_CACHE_LINE_SIZE,
381 PMD_INIT_LOG(ERR, "can not allocate vq");
384 hw->vqs[vtpci_queue_idx] = vq;
387 vq->vq_queue_index = vtpci_queue_idx;
388 vq->vq_nentries = vq_size;
389 vq->event_flags_shadow = 0;
390 if (vtpci_packed_queue(hw)) {
391 vq->avail_wrap_counter = 1;
392 vq->used_wrap_counter = 1;
393 vq->avail_used_flags =
394 VRING_DESC_F_AVAIL(vq->avail_wrap_counter) |
395 VRING_DESC_F_USED(!vq->avail_wrap_counter);
399 * Reserve a memzone for vring elements
401 size = vring_size(hw, vq_size, VIRTIO_PCI_VRING_ALIGN);
402 vq->vq_ring_size = RTE_ALIGN_CEIL(size, VIRTIO_PCI_VRING_ALIGN);
403 PMD_INIT_LOG(DEBUG, "vring_size: %d, rounded_vring_size: %d",
404 size, vq->vq_ring_size);
406 mz = rte_memzone_reserve_aligned(vq_name, vq->vq_ring_size,
407 numa_node, RTE_MEMZONE_IOVA_CONTIG,
408 VIRTIO_PCI_VRING_ALIGN);
410 if (rte_errno == EEXIST)
411 mz = rte_memzone_lookup(vq_name);
418 memset(mz->addr, 0, mz->len);
420 vq->vq_ring_mem = mz->iova;
421 vq->vq_ring_virt_mem = mz->addr;
422 PMD_INIT_LOG(DEBUG, "vq->vq_ring_mem: 0x%" PRIx64,
424 PMD_INIT_LOG(DEBUG, "vq->vq_ring_virt_mem: 0x%" PRIx64,
425 (uint64_t)(uintptr_t)mz->addr);
427 virtio_init_vring(vq);
430 snprintf(vq_hdr_name, sizeof(vq_hdr_name), "port%d_vq%d_hdr",
431 dev->data->port_id, vtpci_queue_idx);
432 hdr_mz = rte_memzone_reserve_aligned(vq_hdr_name, sz_hdr_mz,
433 numa_node, RTE_MEMZONE_IOVA_CONTIG,
434 RTE_CACHE_LINE_SIZE);
435 if (hdr_mz == NULL) {
436 if (rte_errno == EEXIST)
437 hdr_mz = rte_memzone_lookup(vq_hdr_name);
438 if (hdr_mz == NULL) {
445 if (queue_type == VTNET_RQ) {
446 size_t sz_sw = (RTE_PMD_VIRTIO_RX_MAX_BURST + vq_size) *
447 sizeof(vq->sw_ring[0]);
449 sw_ring = rte_zmalloc_socket("sw_ring", sz_sw,
450 RTE_CACHE_LINE_SIZE, numa_node);
452 PMD_INIT_LOG(ERR, "can not allocate RX soft ring");
457 vq->sw_ring = sw_ring;
460 rxvq->port_id = dev->data->port_id;
462 } else if (queue_type == VTNET_TQ) {
465 txvq->port_id = dev->data->port_id;
467 txvq->virtio_net_hdr_mz = hdr_mz;
468 txvq->virtio_net_hdr_mem = hdr_mz->iova;
469 } else if (queue_type == VTNET_CQ) {
473 cvq->virtio_net_hdr_mz = hdr_mz;
474 cvq->virtio_net_hdr_mem = hdr_mz->iova;
475 memset(cvq->virtio_net_hdr_mz->addr, 0, PAGE_SIZE);
480 /* For virtio_user case (that is when hw->dev is NULL), we use
481 * virtual address. And we need properly set _offset_, please see
482 * VIRTIO_MBUF_DATA_DMA_ADDR in virtqueue.h for more information.
484 if (!hw->virtio_user_dev)
485 vq->offset = offsetof(struct rte_mbuf, buf_iova);
487 vq->vq_ring_mem = (uintptr_t)mz->addr;
488 vq->offset = offsetof(struct rte_mbuf, buf_addr);
489 if (queue_type == VTNET_TQ)
490 txvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr;
491 else if (queue_type == VTNET_CQ)
492 cvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr;
495 if (queue_type == VTNET_TQ) {
496 struct virtio_tx_region *txr;
500 memset(txr, 0, vq_size * sizeof(*txr));
501 for (i = 0; i < vq_size; i++) {
502 struct vring_desc *start_dp = txr[i].tx_indir;
503 struct vring_packed_desc *start_dp_packed =
506 /* first indirect descriptor is always the tx header */
507 if (vtpci_packed_queue(hw)) {
508 start_dp_packed->addr = txvq->virtio_net_hdr_mem
510 + offsetof(struct virtio_tx_region,
512 start_dp_packed->len = hw->vtnet_hdr_size;
514 vring_desc_init_split(start_dp,
515 RTE_DIM(txr[i].tx_indir));
516 start_dp->addr = txvq->virtio_net_hdr_mem
518 + offsetof(struct virtio_tx_region,
520 start_dp->len = hw->vtnet_hdr_size;
521 start_dp->flags = VRING_DESC_F_NEXT;
526 if (VTPCI_OPS(hw)->setup_queue(hw, vq) < 0) {
527 PMD_INIT_LOG(ERR, "setup_queue failed");
535 rte_memzone_free(hdr_mz);
536 rte_memzone_free(mz);
543 virtio_free_queues(struct virtio_hw *hw)
545 uint16_t nr_vq = virtio_get_nr_vq(hw);
546 struct virtqueue *vq;
553 for (i = 0; i < nr_vq; i++) {
558 queue_type = virtio_get_queue_type(hw, i);
559 if (queue_type == VTNET_RQ) {
560 rte_free(vq->sw_ring);
561 rte_memzone_free(vq->rxq.mz);
562 } else if (queue_type == VTNET_TQ) {
563 rte_memzone_free(vq->txq.mz);
564 rte_memzone_free(vq->txq.virtio_net_hdr_mz);
566 rte_memzone_free(vq->cq.mz);
567 rte_memzone_free(vq->cq.virtio_net_hdr_mz);
579 virtio_alloc_queues(struct rte_eth_dev *dev)
581 struct virtio_hw *hw = dev->data->dev_private;
582 uint16_t nr_vq = virtio_get_nr_vq(hw);
586 hw->vqs = rte_zmalloc(NULL, sizeof(struct virtqueue *) * nr_vq, 0);
588 PMD_INIT_LOG(ERR, "failed to allocate vqs");
592 for (i = 0; i < nr_vq; i++) {
593 ret = virtio_init_queue(dev, i);
595 virtio_free_queues(hw);
603 static void virtio_queues_unbind_intr(struct rte_eth_dev *dev);
606 virtio_dev_close(struct rte_eth_dev *dev)
608 struct virtio_hw *hw = dev->data->dev_private;
609 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf;
611 PMD_INIT_LOG(DEBUG, "virtio_dev_close");
618 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
619 VTPCI_OPS(hw)->set_config_irq(hw, VIRTIO_MSI_NO_VECTOR);
621 virtio_queues_unbind_intr(dev);
623 if (intr_conf->lsc || intr_conf->rxq) {
624 virtio_intr_disable(dev);
625 rte_intr_efd_disable(dev->intr_handle);
626 rte_free(dev->intr_handle->intr_vec);
627 dev->intr_handle->intr_vec = NULL;
631 virtio_dev_free_mbufs(dev);
632 virtio_free_queues(hw);
636 virtio_dev_promiscuous_enable(struct rte_eth_dev *dev)
638 struct virtio_hw *hw = dev->data->dev_private;
639 struct virtio_pmd_ctrl ctrl;
643 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
644 PMD_INIT_LOG(INFO, "host does not support rx control");
648 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
649 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
653 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
655 PMD_INIT_LOG(ERR, "Failed to enable promisc");
659 virtio_dev_promiscuous_disable(struct rte_eth_dev *dev)
661 struct virtio_hw *hw = dev->data->dev_private;
662 struct virtio_pmd_ctrl ctrl;
666 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
667 PMD_INIT_LOG(INFO, "host does not support rx control");
671 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
672 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
676 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
678 PMD_INIT_LOG(ERR, "Failed to disable promisc");
682 virtio_dev_allmulticast_enable(struct rte_eth_dev *dev)
684 struct virtio_hw *hw = dev->data->dev_private;
685 struct virtio_pmd_ctrl ctrl;
689 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
690 PMD_INIT_LOG(INFO, "host does not support rx control");
694 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
695 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
699 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
701 PMD_INIT_LOG(ERR, "Failed to enable allmulticast");
705 virtio_dev_allmulticast_disable(struct rte_eth_dev *dev)
707 struct virtio_hw *hw = dev->data->dev_private;
708 struct virtio_pmd_ctrl ctrl;
712 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
713 PMD_INIT_LOG(INFO, "host does not support rx control");
717 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
718 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
722 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
724 PMD_INIT_LOG(ERR, "Failed to disable allmulticast");
727 #define VLAN_TAG_LEN 4 /* 802.3ac tag (not DMA'd) */
729 virtio_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
731 struct virtio_hw *hw = dev->data->dev_private;
732 uint32_t ether_hdr_len = ETHER_HDR_LEN + VLAN_TAG_LEN +
734 uint32_t frame_size = mtu + ether_hdr_len;
735 uint32_t max_frame_size = hw->max_mtu + ether_hdr_len;
737 max_frame_size = RTE_MIN(max_frame_size, VIRTIO_MAX_RX_PKTLEN);
739 if (mtu < ETHER_MIN_MTU || frame_size > max_frame_size) {
740 PMD_INIT_LOG(ERR, "MTU should be between %d and %d",
741 ETHER_MIN_MTU, max_frame_size - ether_hdr_len);
748 virtio_dev_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id)
750 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id];
751 struct virtqueue *vq = rxvq->vq;
753 virtqueue_enable_intr(vq);
758 virtio_dev_rx_queue_intr_disable(struct rte_eth_dev *dev, uint16_t queue_id)
760 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id];
761 struct virtqueue *vq = rxvq->vq;
763 virtqueue_disable_intr(vq);
768 * dev_ops for virtio, bare necessities for basic operation
770 static const struct eth_dev_ops virtio_eth_dev_ops = {
771 .dev_configure = virtio_dev_configure,
772 .dev_start = virtio_dev_start,
773 .dev_stop = virtio_dev_stop,
774 .dev_close = virtio_dev_close,
775 .promiscuous_enable = virtio_dev_promiscuous_enable,
776 .promiscuous_disable = virtio_dev_promiscuous_disable,
777 .allmulticast_enable = virtio_dev_allmulticast_enable,
778 .allmulticast_disable = virtio_dev_allmulticast_disable,
779 .mtu_set = virtio_mtu_set,
780 .dev_infos_get = virtio_dev_info_get,
781 .stats_get = virtio_dev_stats_get,
782 .xstats_get = virtio_dev_xstats_get,
783 .xstats_get_names = virtio_dev_xstats_get_names,
784 .stats_reset = virtio_dev_stats_reset,
785 .xstats_reset = virtio_dev_stats_reset,
786 .link_update = virtio_dev_link_update,
787 .vlan_offload_set = virtio_dev_vlan_offload_set,
788 .rx_queue_setup = virtio_dev_rx_queue_setup,
789 .rx_queue_intr_enable = virtio_dev_rx_queue_intr_enable,
790 .rx_queue_intr_disable = virtio_dev_rx_queue_intr_disable,
791 .rx_queue_release = virtio_dev_queue_release,
792 .rx_descriptor_done = virtio_dev_rx_queue_done,
793 .tx_queue_setup = virtio_dev_tx_queue_setup,
794 .tx_queue_release = virtio_dev_queue_release,
795 /* collect stats per queue */
796 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set,
797 .vlan_filter_set = virtio_vlan_filter_set,
798 .mac_addr_add = virtio_mac_addr_add,
799 .mac_addr_remove = virtio_mac_addr_remove,
800 .mac_addr_set = virtio_mac_addr_set,
804 virtio_update_stats(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
808 for (i = 0; i < dev->data->nb_tx_queues; i++) {
809 const struct virtnet_tx *txvq = dev->data->tx_queues[i];
813 stats->opackets += txvq->stats.packets;
814 stats->obytes += txvq->stats.bytes;
815 stats->oerrors += txvq->stats.errors;
817 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
818 stats->q_opackets[i] = txvq->stats.packets;
819 stats->q_obytes[i] = txvq->stats.bytes;
823 for (i = 0; i < dev->data->nb_rx_queues; i++) {
824 const struct virtnet_rx *rxvq = dev->data->rx_queues[i];
828 stats->ipackets += rxvq->stats.packets;
829 stats->ibytes += rxvq->stats.bytes;
830 stats->ierrors += rxvq->stats.errors;
832 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
833 stats->q_ipackets[i] = rxvq->stats.packets;
834 stats->q_ibytes[i] = rxvq->stats.bytes;
838 stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed;
841 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev,
842 struct rte_eth_xstat_name *xstats_names,
843 __rte_unused unsigned limit)
849 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS +
850 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS;
852 if (xstats_names != NULL) {
853 /* Note: limit checked in rte_eth_xstats_names() */
855 for (i = 0; i < dev->data->nb_rx_queues; i++) {
856 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
859 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) {
860 snprintf(xstats_names[count].name,
861 sizeof(xstats_names[count].name),
863 rte_virtio_rxq_stat_strings[t].name);
868 for (i = 0; i < dev->data->nb_tx_queues; i++) {
869 struct virtnet_tx *txvq = dev->data->tx_queues[i];
872 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) {
873 snprintf(xstats_names[count].name,
874 sizeof(xstats_names[count].name),
876 rte_virtio_txq_stat_strings[t].name);
886 virtio_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats,
892 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS +
893 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS;
898 for (i = 0; i < dev->data->nb_rx_queues; i++) {
899 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
906 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) {
907 xstats[count].value = *(uint64_t *)(((char *)rxvq) +
908 rte_virtio_rxq_stat_strings[t].offset);
909 xstats[count].id = count;
914 for (i = 0; i < dev->data->nb_tx_queues; i++) {
915 struct virtnet_tx *txvq = dev->data->tx_queues[i];
922 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) {
923 xstats[count].value = *(uint64_t *)(((char *)txvq) +
924 rte_virtio_txq_stat_strings[t].offset);
925 xstats[count].id = count;
934 virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
936 virtio_update_stats(dev, stats);
942 virtio_dev_stats_reset(struct rte_eth_dev *dev)
946 for (i = 0; i < dev->data->nb_tx_queues; i++) {
947 struct virtnet_tx *txvq = dev->data->tx_queues[i];
951 txvq->stats.packets = 0;
952 txvq->stats.bytes = 0;
953 txvq->stats.errors = 0;
954 txvq->stats.multicast = 0;
955 txvq->stats.broadcast = 0;
956 memset(txvq->stats.size_bins, 0,
957 sizeof(txvq->stats.size_bins[0]) * 8);
960 for (i = 0; i < dev->data->nb_rx_queues; i++) {
961 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
965 rxvq->stats.packets = 0;
966 rxvq->stats.bytes = 0;
967 rxvq->stats.errors = 0;
968 rxvq->stats.multicast = 0;
969 rxvq->stats.broadcast = 0;
970 memset(rxvq->stats.size_bins, 0,
971 sizeof(rxvq->stats.size_bins[0]) * 8);
976 virtio_set_hwaddr(struct virtio_hw *hw)
978 vtpci_write_dev_config(hw,
979 offsetof(struct virtio_net_config, mac),
980 &hw->mac_addr, ETHER_ADDR_LEN);
984 virtio_get_hwaddr(struct virtio_hw *hw)
986 if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) {
987 vtpci_read_dev_config(hw,
988 offsetof(struct virtio_net_config, mac),
989 &hw->mac_addr, ETHER_ADDR_LEN);
991 eth_random_addr(&hw->mac_addr[0]);
992 virtio_set_hwaddr(hw);
997 virtio_mac_table_set(struct virtio_hw *hw,
998 const struct virtio_net_ctrl_mac *uc,
999 const struct virtio_net_ctrl_mac *mc)
1001 struct virtio_pmd_ctrl ctrl;
1004 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
1005 PMD_DRV_LOG(INFO, "host does not support mac table");
1009 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
1010 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET;
1012 len[0] = uc->entries * ETHER_ADDR_LEN + sizeof(uc->entries);
1013 memcpy(ctrl.data, uc, len[0]);
1015 len[1] = mc->entries * ETHER_ADDR_LEN + sizeof(mc->entries);
1016 memcpy(ctrl.data + len[0], mc, len[1]);
1018 err = virtio_send_command(hw->cvq, &ctrl, len, 2);
1020 PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err);
1025 virtio_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac_addr,
1026 uint32_t index, uint32_t vmdq __rte_unused)
1028 struct virtio_hw *hw = dev->data->dev_private;
1029 const struct ether_addr *addrs = dev->data->mac_addrs;
1031 struct virtio_net_ctrl_mac *uc, *mc;
1033 if (index >= VIRTIO_MAX_MAC_ADDRS) {
1034 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
1038 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
1040 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
1043 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
1044 const struct ether_addr *addr
1045 = (i == index) ? mac_addr : addrs + i;
1046 struct virtio_net_ctrl_mac *tbl
1047 = is_multicast_ether_addr(addr) ? mc : uc;
1049 memcpy(&tbl->macs[tbl->entries++], addr, ETHER_ADDR_LEN);
1052 return virtio_mac_table_set(hw, uc, mc);
1056 virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
1058 struct virtio_hw *hw = dev->data->dev_private;
1059 struct ether_addr *addrs = dev->data->mac_addrs;
1060 struct virtio_net_ctrl_mac *uc, *mc;
1063 if (index >= VIRTIO_MAX_MAC_ADDRS) {
1064 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
1068 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
1070 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
1073 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
1074 struct virtio_net_ctrl_mac *tbl;
1076 if (i == index || is_zero_ether_addr(addrs + i))
1079 tbl = is_multicast_ether_addr(addrs + i) ? mc : uc;
1080 memcpy(&tbl->macs[tbl->entries++], addrs + i, ETHER_ADDR_LEN);
1083 virtio_mac_table_set(hw, uc, mc);
1087 virtio_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr)
1089 struct virtio_hw *hw = dev->data->dev_private;
1091 memcpy(hw->mac_addr, mac_addr, ETHER_ADDR_LEN);
1093 /* Use atomic update if available */
1094 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
1095 struct virtio_pmd_ctrl ctrl;
1096 int len = ETHER_ADDR_LEN;
1098 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
1099 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET;
1101 memcpy(ctrl.data, mac_addr, ETHER_ADDR_LEN);
1102 return virtio_send_command(hw->cvq, &ctrl, &len, 1);
1105 if (!vtpci_with_feature(hw, VIRTIO_NET_F_MAC))
1108 virtio_set_hwaddr(hw);
1113 virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
1115 struct virtio_hw *hw = dev->data->dev_private;
1116 struct virtio_pmd_ctrl ctrl;
1119 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN))
1122 ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN;
1123 ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL;
1124 memcpy(ctrl.data, &vlan_id, sizeof(vlan_id));
1125 len = sizeof(vlan_id);
1127 return virtio_send_command(hw->cvq, &ctrl, &len, 1);
1131 virtio_intr_enable(struct rte_eth_dev *dev)
1133 struct virtio_hw *hw = dev->data->dev_private;
1135 if (rte_intr_enable(dev->intr_handle) < 0)
1138 if (!hw->virtio_user_dev)
1139 hw->use_msix = vtpci_msix_detect(RTE_ETH_DEV_TO_PCI(dev));
1145 virtio_intr_disable(struct rte_eth_dev *dev)
1147 struct virtio_hw *hw = dev->data->dev_private;
1149 if (rte_intr_disable(dev->intr_handle) < 0)
1152 if (!hw->virtio_user_dev)
1153 hw->use_msix = vtpci_msix_detect(RTE_ETH_DEV_TO_PCI(dev));
1159 virtio_negotiate_features(struct virtio_hw *hw, uint64_t req_features)
1161 uint64_t host_features;
1163 /* Prepare guest_features: feature that driver wants to support */
1164 PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %" PRIx64,
1167 /* Read device(host) feature bits */
1168 host_features = VTPCI_OPS(hw)->get_features(hw);
1169 PMD_INIT_LOG(DEBUG, "host_features before negotiate = %" PRIx64,
1172 /* If supported, ensure MTU value is valid before acknowledging it. */
1173 if (host_features & req_features & (1ULL << VIRTIO_NET_F_MTU)) {
1174 struct virtio_net_config config;
1176 vtpci_read_dev_config(hw,
1177 offsetof(struct virtio_net_config, mtu),
1178 &config.mtu, sizeof(config.mtu));
1180 if (config.mtu < ETHER_MIN_MTU)
1181 req_features &= ~(1ULL << VIRTIO_NET_F_MTU);
1185 * Negotiate features: Subset of device feature bits are written back
1186 * guest feature bits.
1188 hw->guest_features = req_features;
1189 hw->guest_features = vtpci_negotiate_features(hw, host_features);
1190 PMD_INIT_LOG(DEBUG, "features after negotiate = %" PRIx64,
1191 hw->guest_features);
1194 if (!vtpci_with_feature(hw, VIRTIO_F_VERSION_1)) {
1196 "VIRTIO_F_VERSION_1 features is not enabled.");
1199 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_FEATURES_OK);
1200 if (!(vtpci_get_status(hw) & VIRTIO_CONFIG_STATUS_FEATURES_OK)) {
1202 "failed to set FEATURES_OK status!");
1207 hw->req_guest_features = req_features;
1213 virtio_dev_pause(struct rte_eth_dev *dev)
1215 struct virtio_hw *hw = dev->data->dev_private;
1217 rte_spinlock_lock(&hw->state_lock);
1219 if (hw->started == 0) {
1220 /* Device is just stopped. */
1221 rte_spinlock_unlock(&hw->state_lock);
1226 * Prevent the worker threads from touching queues to avoid contention,
1227 * 1 ms should be enough for the ongoing Tx function to finish.
1234 * Recover hw state to let the worker threads continue.
1237 virtio_dev_resume(struct rte_eth_dev *dev)
1239 struct virtio_hw *hw = dev->data->dev_private;
1242 rte_spinlock_unlock(&hw->state_lock);
1246 * Should be called only after device is paused.
1249 virtio_inject_pkts(struct rte_eth_dev *dev, struct rte_mbuf **tx_pkts,
1252 struct virtio_hw *hw = dev->data->dev_private;
1253 struct virtnet_tx *txvq = dev->data->tx_queues[0];
1256 hw->inject_pkts = tx_pkts;
1257 ret = dev->tx_pkt_burst(txvq, tx_pkts, nb_pkts);
1258 hw->inject_pkts = NULL;
1264 virtio_notify_peers(struct rte_eth_dev *dev)
1266 struct virtio_hw *hw = dev->data->dev_private;
1267 struct virtnet_rx *rxvq;
1268 struct rte_mbuf *rarp_mbuf;
1270 if (!dev->data->rx_queues)
1273 rxvq = dev->data->rx_queues[0];
1277 rarp_mbuf = rte_net_make_rarp_packet(rxvq->mpool,
1278 (struct ether_addr *)hw->mac_addr);
1279 if (rarp_mbuf == NULL) {
1280 PMD_DRV_LOG(ERR, "failed to make RARP packet.");
1284 /* If virtio port just stopped, no need to send RARP */
1285 if (virtio_dev_pause(dev) < 0) {
1286 rte_pktmbuf_free(rarp_mbuf);
1290 virtio_inject_pkts(dev, &rarp_mbuf, 1);
1291 virtio_dev_resume(dev);
1295 virtio_ack_link_announce(struct rte_eth_dev *dev)
1297 struct virtio_hw *hw = dev->data->dev_private;
1298 struct virtio_pmd_ctrl ctrl;
1300 ctrl.hdr.class = VIRTIO_NET_CTRL_ANNOUNCE;
1301 ctrl.hdr.cmd = VIRTIO_NET_CTRL_ANNOUNCE_ACK;
1303 virtio_send_command(hw->cvq, &ctrl, NULL, 0);
1307 * Process virtio config changed interrupt. Call the callback
1308 * if link state changed, generate gratuitous RARP packet if
1309 * the status indicates an ANNOUNCE.
1312 virtio_interrupt_handler(void *param)
1314 struct rte_eth_dev *dev = param;
1315 struct virtio_hw *hw = dev->data->dev_private;
1319 /* Read interrupt status which clears interrupt */
1320 isr = vtpci_isr(hw);
1321 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr);
1323 if (virtio_intr_enable(dev) < 0)
1324 PMD_DRV_LOG(ERR, "interrupt enable failed");
1326 if (isr & VIRTIO_PCI_ISR_CONFIG) {
1327 if (virtio_dev_link_update(dev, 0) == 0)
1328 _rte_eth_dev_callback_process(dev,
1329 RTE_ETH_EVENT_INTR_LSC,
1332 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1333 vtpci_read_dev_config(hw,
1334 offsetof(struct virtio_net_config, status),
1335 &status, sizeof(status));
1336 if (status & VIRTIO_NET_S_ANNOUNCE) {
1337 virtio_notify_peers(dev);
1339 virtio_ack_link_announce(dev);
1345 /* set rx and tx handlers according to what is supported */
1347 set_rxtx_funcs(struct rte_eth_dev *eth_dev)
1349 struct virtio_hw *hw = eth_dev->data->dev_private;
1351 if (vtpci_packed_queue(hw)) {
1353 "virtio: using packed ring standard Tx path on port %u",
1354 eth_dev->data->port_id);
1355 eth_dev->tx_pkt_burst = virtio_xmit_pkts_packed;
1357 if (hw->use_inorder_tx) {
1358 PMD_INIT_LOG(INFO, "virtio: using inorder Tx path on port %u",
1359 eth_dev->data->port_id);
1360 eth_dev->tx_pkt_burst = virtio_xmit_pkts_inorder;
1362 PMD_INIT_LOG(INFO, "virtio: using standard Tx path on port %u",
1363 eth_dev->data->port_id);
1364 eth_dev->tx_pkt_burst = virtio_xmit_pkts;
1368 if (hw->use_simple_rx) {
1369 PMD_INIT_LOG(INFO, "virtio: using simple Rx path on port %u",
1370 eth_dev->data->port_id);
1371 eth_dev->rx_pkt_burst = virtio_recv_pkts_vec;
1372 } else if (hw->use_inorder_rx) {
1374 "virtio: using inorder mergeable buffer Rx path on port %u",
1375 eth_dev->data->port_id);
1376 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts_inorder;
1377 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
1379 "virtio: using mergeable buffer Rx path on port %u",
1380 eth_dev->data->port_id);
1381 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts;
1383 PMD_INIT_LOG(INFO, "virtio: using standard Rx path on port %u",
1384 eth_dev->data->port_id);
1385 eth_dev->rx_pkt_burst = &virtio_recv_pkts;
1390 /* Only support 1:1 queue/interrupt mapping so far.
1391 * TODO: support n:1 queue/interrupt mapping when there are limited number of
1392 * interrupt vectors (<N+1).
1395 virtio_queues_bind_intr(struct rte_eth_dev *dev)
1398 struct virtio_hw *hw = dev->data->dev_private;
1400 PMD_INIT_LOG(INFO, "queue/interrupt binding");
1401 for (i = 0; i < dev->data->nb_rx_queues; ++i) {
1402 dev->intr_handle->intr_vec[i] = i + 1;
1403 if (VTPCI_OPS(hw)->set_queue_irq(hw, hw->vqs[i * 2], i + 1) ==
1404 VIRTIO_MSI_NO_VECTOR) {
1405 PMD_DRV_LOG(ERR, "failed to set queue vector");
1414 virtio_queues_unbind_intr(struct rte_eth_dev *dev)
1417 struct virtio_hw *hw = dev->data->dev_private;
1419 PMD_INIT_LOG(INFO, "queue/interrupt unbinding");
1420 for (i = 0; i < dev->data->nb_rx_queues; ++i)
1421 VTPCI_OPS(hw)->set_queue_irq(hw,
1422 hw->vqs[i * VTNET_CQ],
1423 VIRTIO_MSI_NO_VECTOR);
1427 virtio_configure_intr(struct rte_eth_dev *dev)
1429 struct virtio_hw *hw = dev->data->dev_private;
1431 if (!rte_intr_cap_multiple(dev->intr_handle)) {
1432 PMD_INIT_LOG(ERR, "Multiple intr vector not supported");
1436 if (rte_intr_efd_enable(dev->intr_handle, dev->data->nb_rx_queues)) {
1437 PMD_INIT_LOG(ERR, "Fail to create eventfd");
1441 if (!dev->intr_handle->intr_vec) {
1442 dev->intr_handle->intr_vec =
1443 rte_zmalloc("intr_vec",
1444 hw->max_queue_pairs * sizeof(int), 0);
1445 if (!dev->intr_handle->intr_vec) {
1446 PMD_INIT_LOG(ERR, "Failed to allocate %u rxq vectors",
1447 hw->max_queue_pairs);
1452 /* Re-register callback to update max_intr */
1453 rte_intr_callback_unregister(dev->intr_handle,
1454 virtio_interrupt_handler,
1456 rte_intr_callback_register(dev->intr_handle,
1457 virtio_interrupt_handler,
1460 /* DO NOT try to remove this! This function will enable msix, or QEMU
1461 * will encounter SIGSEGV when DRIVER_OK is sent.
1462 * And for legacy devices, this should be done before queue/vec binding
1463 * to change the config size from 20 to 24, or VIRTIO_MSI_QUEUE_VECTOR
1464 * (22) will be ignored.
1466 if (virtio_intr_enable(dev) < 0) {
1467 PMD_DRV_LOG(ERR, "interrupt enable failed");
1471 if (virtio_queues_bind_intr(dev) < 0) {
1472 PMD_INIT_LOG(ERR, "Failed to bind queue/interrupt");
1479 /* reset device and renegotiate features if needed */
1481 virtio_init_device(struct rte_eth_dev *eth_dev, uint64_t req_features)
1483 struct virtio_hw *hw = eth_dev->data->dev_private;
1484 struct virtio_net_config *config;
1485 struct virtio_net_config local_config;
1486 struct rte_pci_device *pci_dev = NULL;
1489 /* Reset the device although not necessary at startup */
1493 virtio_dev_free_mbufs(eth_dev);
1494 virtio_free_queues(hw);
1497 /* Tell the host we've noticed this device. */
1498 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_ACK);
1500 /* Tell the host we've known how to drive the device. */
1501 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER);
1502 if (virtio_negotiate_features(hw, req_features) < 0)
1505 if (!hw->virtio_user_dev) {
1506 pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
1507 rte_eth_copy_pci_info(eth_dev, pci_dev);
1510 /* If host does not support both status and MSI-X then disable LSC */
1511 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS) &&
1512 hw->use_msix != VIRTIO_MSIX_NONE)
1513 eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC;
1515 eth_dev->data->dev_flags &= ~RTE_ETH_DEV_INTR_LSC;
1517 /* Setting up rx_header size for the device */
1518 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF) ||
1519 vtpci_with_feature(hw, VIRTIO_F_VERSION_1) ||
1520 vtpci_with_feature(hw, VIRTIO_F_RING_PACKED))
1521 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf);
1523 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr);
1525 /* Copy the permanent MAC address to: virtio_hw */
1526 virtio_get_hwaddr(hw);
1527 ether_addr_copy((struct ether_addr *) hw->mac_addr,
1528 ð_dev->data->mac_addrs[0]);
1530 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1531 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2],
1532 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]);
1534 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) {
1535 config = &local_config;
1537 vtpci_read_dev_config(hw,
1538 offsetof(struct virtio_net_config, mac),
1539 &config->mac, sizeof(config->mac));
1541 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1542 vtpci_read_dev_config(hw,
1543 offsetof(struct virtio_net_config, status),
1544 &config->status, sizeof(config->status));
1547 "VIRTIO_NET_F_STATUS is not supported");
1551 if (vtpci_with_feature(hw, VIRTIO_NET_F_MQ)) {
1552 vtpci_read_dev_config(hw,
1553 offsetof(struct virtio_net_config, max_virtqueue_pairs),
1554 &config->max_virtqueue_pairs,
1555 sizeof(config->max_virtqueue_pairs));
1558 "VIRTIO_NET_F_MQ is not supported");
1559 config->max_virtqueue_pairs = 1;
1562 hw->max_queue_pairs = config->max_virtqueue_pairs;
1564 if (vtpci_with_feature(hw, VIRTIO_NET_F_MTU)) {
1565 vtpci_read_dev_config(hw,
1566 offsetof(struct virtio_net_config, mtu),
1568 sizeof(config->mtu));
1571 * MTU value has already been checked at negotiation
1572 * time, but check again in case it has changed since
1573 * then, which should not happen.
1575 if (config->mtu < ETHER_MIN_MTU) {
1576 PMD_INIT_LOG(ERR, "invalid max MTU value (%u)",
1581 hw->max_mtu = config->mtu;
1582 /* Set initial MTU to maximum one supported by vhost */
1583 eth_dev->data->mtu = config->mtu;
1586 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - ETHER_HDR_LEN -
1587 VLAN_TAG_LEN - hw->vtnet_hdr_size;
1590 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d",
1591 config->max_virtqueue_pairs);
1592 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status);
1594 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1595 config->mac[0], config->mac[1],
1596 config->mac[2], config->mac[3],
1597 config->mac[4], config->mac[5]);
1599 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=1");
1600 hw->max_queue_pairs = 1;
1601 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - ETHER_HDR_LEN -
1602 VLAN_TAG_LEN - hw->vtnet_hdr_size;
1605 ret = virtio_alloc_queues(eth_dev);
1609 if (eth_dev->data->dev_conf.intr_conf.rxq) {
1610 if (virtio_configure_intr(eth_dev) < 0) {
1611 PMD_INIT_LOG(ERR, "failed to configure interrupt");
1616 vtpci_reinit_complete(hw);
1619 PMD_INIT_LOG(DEBUG, "port %d vendorID=0x%x deviceID=0x%x",
1620 eth_dev->data->port_id, pci_dev->id.vendor_id,
1621 pci_dev->id.device_id);
1627 * Remap the PCI device again (IO port map for legacy device and
1628 * memory map for modern device), so that the secondary process
1629 * could have the PCI initiated correctly.
1632 virtio_remap_pci(struct rte_pci_device *pci_dev, struct virtio_hw *hw)
1636 * We don't have to re-parse the PCI config space, since
1637 * rte_pci_map_device() makes sure the mapped address
1638 * in secondary process would equal to the one mapped in
1639 * the primary process: error will be returned if that
1640 * requirement is not met.
1642 * That said, we could simply reuse all cap pointers
1643 * (such as dev_cfg, common_cfg, etc.) parsed from the
1644 * primary process, which is stored in shared memory.
1646 if (rte_pci_map_device(pci_dev)) {
1647 PMD_INIT_LOG(DEBUG, "failed to map pci device!");
1651 if (rte_pci_ioport_map(pci_dev, 0, VTPCI_IO(hw)) < 0)
1659 virtio_set_vtpci_ops(struct virtio_hw *hw)
1661 #ifdef RTE_VIRTIO_USER
1662 if (hw->virtio_user_dev)
1663 VTPCI_OPS(hw) = &virtio_user_ops;
1667 VTPCI_OPS(hw) = &modern_ops;
1669 VTPCI_OPS(hw) = &legacy_ops;
1673 * This function is based on probe() function in virtio_pci.c
1674 * It returns 0 on success.
1677 eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
1679 struct virtio_hw *hw = eth_dev->data->dev_private;
1682 RTE_BUILD_BUG_ON(RTE_PKTMBUF_HEADROOM < sizeof(struct virtio_net_hdr_mrg_rxbuf));
1684 eth_dev->dev_ops = &virtio_eth_dev_ops;
1686 if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
1687 if (!hw->virtio_user_dev) {
1688 ret = virtio_remap_pci(RTE_ETH_DEV_TO_PCI(eth_dev), hw);
1693 virtio_set_vtpci_ops(hw);
1694 set_rxtx_funcs(eth_dev);
1699 /* Allocate memory for storing MAC addresses */
1700 eth_dev->data->mac_addrs = rte_zmalloc("virtio", VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN, 0);
1701 if (eth_dev->data->mac_addrs == NULL) {
1703 "Failed to allocate %d bytes needed to store MAC addresses",
1704 VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN);
1708 hw->port_id = eth_dev->data->port_id;
1709 /* For virtio_user case the hw->virtio_user_dev is populated by
1710 * virtio_user_eth_dev_alloc() before eth_virtio_dev_init() is called.
1712 if (!hw->virtio_user_dev) {
1713 ret = vtpci_init(RTE_ETH_DEV_TO_PCI(eth_dev), hw);
1718 /* reset device and negotiate default features */
1719 ret = virtio_init_device(eth_dev, VIRTIO_PMD_DEFAULT_GUEST_FEATURES);
1726 rte_free(eth_dev->data->mac_addrs);
1731 eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev)
1733 PMD_INIT_FUNC_TRACE();
1735 if (rte_eal_process_type() == RTE_PROC_SECONDARY)
1738 virtio_dev_stop(eth_dev);
1739 virtio_dev_close(eth_dev);
1741 eth_dev->dev_ops = NULL;
1742 eth_dev->tx_pkt_burst = NULL;
1743 eth_dev->rx_pkt_burst = NULL;
1745 if (eth_dev->device)
1746 rte_pci_unmap_device(RTE_ETH_DEV_TO_PCI(eth_dev));
1748 PMD_INIT_LOG(DEBUG, "dev_uninit completed");
1753 static int vdpa_check_handler(__rte_unused const char *key,
1754 const char *value, __rte_unused void *opaque)
1756 if (strcmp(value, "1"))
1763 vdpa_mode_selected(struct rte_devargs *devargs)
1765 struct rte_kvargs *kvlist;
1766 const char *key = "vdpa";
1769 if (devargs == NULL)
1772 kvlist = rte_kvargs_parse(devargs->args, NULL);
1776 if (!rte_kvargs_count(kvlist, key))
1779 /* vdpa mode selected when there's a key-value pair: vdpa=1 */
1780 if (rte_kvargs_process(kvlist, key,
1781 vdpa_check_handler, NULL) < 0) {
1787 rte_kvargs_free(kvlist);
1791 static int eth_virtio_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
1792 struct rte_pci_device *pci_dev)
1794 if (rte_eal_iopl_init() != 0) {
1795 PMD_INIT_LOG(ERR, "IOPL call failed - cannot use virtio PMD");
1799 /* virtio pmd skips probe if device needs to work in vdpa mode */
1800 if (vdpa_mode_selected(pci_dev->device.devargs))
1803 return rte_eth_dev_pci_generic_probe(pci_dev, sizeof(struct virtio_hw),
1804 eth_virtio_dev_init);
1807 static int eth_virtio_pci_remove(struct rte_pci_device *pci_dev)
1809 return rte_eth_dev_pci_generic_remove(pci_dev, eth_virtio_dev_uninit);
1812 static struct rte_pci_driver rte_virtio_pmd = {
1814 .name = "net_virtio",
1816 .id_table = pci_id_virtio_map,
1818 .probe = eth_virtio_pci_probe,
1819 .remove = eth_virtio_pci_remove,
1822 RTE_INIT(rte_virtio_pmd_init)
1824 rte_eal_iopl_init();
1825 rte_pci_register(&rte_virtio_pmd);
1829 rx_offload_enabled(struct virtio_hw *hw)
1831 return vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM) ||
1832 vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) ||
1833 vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6);
1837 tx_offload_enabled(struct virtio_hw *hw)
1839 return vtpci_with_feature(hw, VIRTIO_NET_F_CSUM) ||
1840 vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO4) ||
1841 vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO6);
1845 * Configure virtio device
1846 * It returns 0 on success.
1849 virtio_dev_configure(struct rte_eth_dev *dev)
1851 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
1852 const struct rte_eth_txmode *txmode = &dev->data->dev_conf.txmode;
1853 struct virtio_hw *hw = dev->data->dev_private;
1854 uint64_t rx_offloads = rxmode->offloads;
1855 uint64_t tx_offloads = txmode->offloads;
1856 uint64_t req_features;
1859 PMD_INIT_LOG(DEBUG, "configure");
1860 req_features = VIRTIO_PMD_DEFAULT_GUEST_FEATURES;
1862 if (dev->data->dev_conf.intr_conf.rxq) {
1863 ret = virtio_init_device(dev, hw->req_guest_features);
1868 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM |
1869 DEV_RX_OFFLOAD_TCP_CKSUM))
1870 req_features |= (1ULL << VIRTIO_NET_F_GUEST_CSUM);
1872 if (rx_offloads & DEV_RX_OFFLOAD_TCP_LRO)
1874 (1ULL << VIRTIO_NET_F_GUEST_TSO4) |
1875 (1ULL << VIRTIO_NET_F_GUEST_TSO6);
1877 if (tx_offloads & (DEV_TX_OFFLOAD_UDP_CKSUM |
1878 DEV_TX_OFFLOAD_TCP_CKSUM))
1879 req_features |= (1ULL << VIRTIO_NET_F_CSUM);
1881 if (tx_offloads & DEV_TX_OFFLOAD_TCP_TSO)
1883 (1ULL << VIRTIO_NET_F_HOST_TSO4) |
1884 (1ULL << VIRTIO_NET_F_HOST_TSO6);
1886 /* if request features changed, reinit the device */
1887 if (req_features != hw->req_guest_features) {
1888 ret = virtio_init_device(dev, req_features);
1893 if ((rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM |
1894 DEV_RX_OFFLOAD_TCP_CKSUM)) &&
1895 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM)) {
1897 "rx checksum not available on this host");
1901 if ((rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) &&
1902 (!vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) ||
1903 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6))) {
1905 "Large Receive Offload not available on this host");
1909 /* start control queue */
1910 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ))
1911 virtio_dev_cq_start(dev);
1913 if (rx_offloads & DEV_RX_OFFLOAD_VLAN_STRIP)
1916 if ((rx_offloads & DEV_RX_OFFLOAD_VLAN_FILTER)
1917 && !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
1919 "vlan filtering not available on this host");
1923 hw->has_tx_offload = tx_offload_enabled(hw);
1924 hw->has_rx_offload = rx_offload_enabled(hw);
1926 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
1927 /* Enable vector (0) for Link State Intrerrupt */
1928 if (VTPCI_OPS(hw)->set_config_irq(hw, 0) ==
1929 VIRTIO_MSI_NO_VECTOR) {
1930 PMD_DRV_LOG(ERR, "failed to set config vector");
1934 rte_spinlock_init(&hw->state_lock);
1936 hw->use_simple_rx = 1;
1938 if (vtpci_with_feature(hw, VIRTIO_F_IN_ORDER)) {
1939 hw->use_inorder_tx = 1;
1940 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF) &&
1941 !vtpci_packed_queue(hw)) {
1942 hw->use_inorder_rx = 1;
1943 hw->use_simple_rx = 0;
1945 hw->use_inorder_rx = 0;
1949 #if defined RTE_ARCH_ARM64 || defined RTE_ARCH_ARM
1950 if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON)) {
1951 hw->use_simple_rx = 0;
1954 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
1955 hw->use_simple_rx = 0;
1958 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM |
1959 DEV_RX_OFFLOAD_TCP_CKSUM |
1960 DEV_RX_OFFLOAD_TCP_LRO |
1961 DEV_RX_OFFLOAD_VLAN_STRIP))
1962 hw->use_simple_rx = 0;
1971 virtio_dev_start(struct rte_eth_dev *dev)
1973 uint16_t nb_queues, i;
1974 struct virtnet_rx *rxvq;
1975 struct virtnet_tx *txvq __rte_unused;
1976 struct virtio_hw *hw = dev->data->dev_private;
1979 /* Finish the initialization of the queues */
1980 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1981 ret = virtio_dev_rx_queue_setup_finish(dev, i);
1985 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1986 ret = virtio_dev_tx_queue_setup_finish(dev, i);
1991 /* check if lsc interrupt feature is enabled */
1992 if (dev->data->dev_conf.intr_conf.lsc) {
1993 if (!(dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)) {
1994 PMD_DRV_LOG(ERR, "link status not supported by host");
1999 /* Enable uio/vfio intr/eventfd mapping: althrough we already did that
2000 * in device configure, but it could be unmapped when device is
2003 if (dev->data->dev_conf.intr_conf.lsc ||
2004 dev->data->dev_conf.intr_conf.rxq) {
2005 virtio_intr_disable(dev);
2007 /* Setup interrupt callback */
2008 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
2009 rte_intr_callback_register(dev->intr_handle,
2010 virtio_interrupt_handler,
2013 if (virtio_intr_enable(dev) < 0) {
2014 PMD_DRV_LOG(ERR, "interrupt enable failed");
2019 /*Notify the backend
2020 *Otherwise the tap backend might already stop its queue due to fullness.
2021 *vhost backend will have no chance to be waked up
2023 nb_queues = RTE_MAX(dev->data->nb_rx_queues, dev->data->nb_tx_queues);
2024 if (hw->max_queue_pairs > 1) {
2025 if (virtio_set_multiple_queues(dev, nb_queues) != 0)
2029 PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues);
2031 for (i = 0; i < dev->data->nb_rx_queues; i++) {
2032 rxvq = dev->data->rx_queues[i];
2033 /* Flush the old packets */
2034 virtqueue_rxvq_flush(rxvq->vq);
2035 virtqueue_notify(rxvq->vq);
2038 for (i = 0; i < dev->data->nb_tx_queues; i++) {
2039 txvq = dev->data->tx_queues[i];
2040 virtqueue_notify(txvq->vq);
2043 PMD_INIT_LOG(DEBUG, "Notified backend at initialization");
2045 for (i = 0; i < dev->data->nb_rx_queues; i++) {
2046 rxvq = dev->data->rx_queues[i];
2047 VIRTQUEUE_DUMP(rxvq->vq);
2050 for (i = 0; i < dev->data->nb_tx_queues; i++) {
2051 txvq = dev->data->tx_queues[i];
2052 VIRTQUEUE_DUMP(txvq->vq);
2055 set_rxtx_funcs(dev);
2058 /* Initialize Link state */
2059 virtio_dev_link_update(dev, 0);
2064 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev)
2066 struct virtio_hw *hw = dev->data->dev_private;
2067 uint16_t nr_vq = virtio_get_nr_vq(hw);
2068 const char *type __rte_unused;
2069 unsigned int i, mbuf_num = 0;
2070 struct virtqueue *vq;
2071 struct rte_mbuf *buf;
2074 if (hw->vqs == NULL)
2077 for (i = 0; i < nr_vq; i++) {
2082 queue_type = virtio_get_queue_type(hw, i);
2083 if (queue_type == VTNET_RQ)
2085 else if (queue_type == VTNET_TQ)
2091 "Before freeing %s[%d] used and unused buf",
2095 while ((buf = virtqueue_detach_unused(vq)) != NULL) {
2096 rte_pktmbuf_free(buf);
2101 "After freeing %s[%d] used and unused buf",
2106 PMD_INIT_LOG(DEBUG, "%d mbufs freed", mbuf_num);
2110 * Stop device: disable interrupt and mark link down
2113 virtio_dev_stop(struct rte_eth_dev *dev)
2115 struct virtio_hw *hw = dev->data->dev_private;
2116 struct rte_eth_link link;
2117 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf;
2119 PMD_INIT_LOG(DEBUG, "stop");
2121 rte_spinlock_lock(&hw->state_lock);
2124 hw->started = false;
2126 if (intr_conf->lsc || intr_conf->rxq) {
2127 virtio_intr_disable(dev);
2129 /* Reset interrupt callback */
2130 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) {
2131 rte_intr_callback_unregister(dev->intr_handle,
2132 virtio_interrupt_handler,
2137 memset(&link, 0, sizeof(link));
2138 rte_eth_linkstatus_set(dev, &link);
2140 rte_spinlock_unlock(&hw->state_lock);
2144 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete)
2146 struct rte_eth_link link;
2148 struct virtio_hw *hw = dev->data->dev_private;
2150 memset(&link, 0, sizeof(link));
2151 link.link_duplex = ETH_LINK_FULL_DUPLEX;
2152 link.link_speed = ETH_SPEED_NUM_10G;
2153 link.link_autoneg = ETH_LINK_FIXED;
2156 link.link_status = ETH_LINK_DOWN;
2157 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
2158 PMD_INIT_LOG(DEBUG, "Get link status from hw");
2159 vtpci_read_dev_config(hw,
2160 offsetof(struct virtio_net_config, status),
2161 &status, sizeof(status));
2162 if ((status & VIRTIO_NET_S_LINK_UP) == 0) {
2163 link.link_status = ETH_LINK_DOWN;
2164 PMD_INIT_LOG(DEBUG, "Port %d is down",
2165 dev->data->port_id);
2167 link.link_status = ETH_LINK_UP;
2168 PMD_INIT_LOG(DEBUG, "Port %d is up",
2169 dev->data->port_id);
2172 link.link_status = ETH_LINK_UP;
2175 return rte_eth_linkstatus_set(dev, &link);
2179 virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask)
2181 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
2182 struct virtio_hw *hw = dev->data->dev_private;
2183 uint64_t offloads = rxmode->offloads;
2185 if (mask & ETH_VLAN_FILTER_MASK) {
2186 if ((offloads & DEV_RX_OFFLOAD_VLAN_FILTER) &&
2187 !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
2190 "vlan filtering not available on this host");
2196 if (mask & ETH_VLAN_STRIP_MASK)
2197 hw->vlan_strip = !!(offloads & DEV_RX_OFFLOAD_VLAN_STRIP);
2203 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
2205 uint64_t tso_mask, host_features;
2206 struct virtio_hw *hw = dev->data->dev_private;
2208 dev_info->speed_capa = ETH_LINK_SPEED_10G; /* fake value */
2210 dev_info->max_rx_queues =
2211 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_RX_QUEUES);
2212 dev_info->max_tx_queues =
2213 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_TX_QUEUES);
2214 dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE;
2215 dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN;
2216 dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS;
2218 host_features = VTPCI_OPS(hw)->get_features(hw);
2219 dev_info->rx_offload_capa = DEV_RX_OFFLOAD_VLAN_STRIP;
2220 if (host_features & (1ULL << VIRTIO_NET_F_GUEST_CSUM)) {
2221 dev_info->rx_offload_capa |=
2222 DEV_RX_OFFLOAD_TCP_CKSUM |
2223 DEV_RX_OFFLOAD_UDP_CKSUM;
2225 if (host_features & (1ULL << VIRTIO_NET_F_CTRL_VLAN))
2226 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_VLAN_FILTER;
2227 tso_mask = (1ULL << VIRTIO_NET_F_GUEST_TSO4) |
2228 (1ULL << VIRTIO_NET_F_GUEST_TSO6);
2229 if ((host_features & tso_mask) == tso_mask)
2230 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_TCP_LRO;
2232 dev_info->tx_offload_capa = DEV_TX_OFFLOAD_MULTI_SEGS |
2233 DEV_TX_OFFLOAD_VLAN_INSERT;
2234 if (host_features & (1ULL << VIRTIO_NET_F_CSUM)) {
2235 dev_info->tx_offload_capa |=
2236 DEV_TX_OFFLOAD_UDP_CKSUM |
2237 DEV_TX_OFFLOAD_TCP_CKSUM;
2239 tso_mask = (1ULL << VIRTIO_NET_F_HOST_TSO4) |
2240 (1ULL << VIRTIO_NET_F_HOST_TSO6);
2241 if ((host_features & tso_mask) == tso_mask)
2242 dev_info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO;
2246 * It enables testpmd to collect per queue stats.
2249 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev,
2250 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx,
2251 __rte_unused uint8_t is_rx)
2256 RTE_PMD_EXPORT_NAME(net_virtio, __COUNTER__);
2257 RTE_PMD_REGISTER_PCI_TABLE(net_virtio, pci_id_virtio_map);
2258 RTE_PMD_REGISTER_KMOD_DEP(net_virtio, "* igb_uio | uio_pci_generic | vfio-pci");
2260 RTE_INIT(virtio_init_log)
2262 virtio_logtype_init = rte_log_register("pmd.net.virtio.init");
2263 if (virtio_logtype_init >= 0)
2264 rte_log_set_level(virtio_logtype_init, RTE_LOG_NOTICE);
2265 virtio_logtype_driver = rte_log_register("pmd.net.virtio.driver");
2266 if (virtio_logtype_driver >= 0)
2267 rte_log_set_level(virtio_logtype_driver, RTE_LOG_NOTICE);