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();
303 * Reinitialise since virtio port might have been stopped and restarted
305 memset(ring_mem, 0, vq->vq_ring_size);
306 vring_init(vr, size, ring_mem, VIRTIO_PCI_VRING_ALIGN);
307 vq->vq_used_cons_idx = 0;
308 vq->vq_desc_head_idx = 0;
309 vq->vq_avail_idx = 0;
310 vq->vq_desc_tail_idx = (uint16_t)(vq->vq_nentries - 1);
311 vq->vq_free_cnt = vq->vq_nentries;
312 memset(vq->vq_descx, 0, sizeof(struct vq_desc_extra) * vq->vq_nentries);
314 vring_desc_init(vr->desc, size);
317 * Disable device(host) interrupting guest
319 virtqueue_disable_intr(vq);
323 virtio_init_queue(struct rte_eth_dev *dev, uint16_t vtpci_queue_idx)
325 char vq_name[VIRTQUEUE_MAX_NAME_SZ];
326 char vq_hdr_name[VIRTQUEUE_MAX_NAME_SZ];
327 const struct rte_memzone *mz = NULL, *hdr_mz = NULL;
328 unsigned int vq_size, size;
329 struct virtio_hw *hw = dev->data->dev_private;
330 struct virtnet_rx *rxvq = NULL;
331 struct virtnet_tx *txvq = NULL;
332 struct virtnet_ctl *cvq = NULL;
333 struct virtqueue *vq;
334 size_t sz_hdr_mz = 0;
335 void *sw_ring = NULL;
336 int queue_type = virtio_get_queue_type(hw, vtpci_queue_idx);
339 PMD_INIT_LOG(DEBUG, "setting up queue: %u", vtpci_queue_idx);
342 * Read the virtqueue size from the Queue Size field
343 * Always power of 2 and if 0 virtqueue does not exist
345 vq_size = VTPCI_OPS(hw)->get_queue_num(hw, vtpci_queue_idx);
346 PMD_INIT_LOG(DEBUG, "vq_size: %u", vq_size);
348 PMD_INIT_LOG(ERR, "virtqueue does not exist");
352 if (!rte_is_power_of_2(vq_size)) {
353 PMD_INIT_LOG(ERR, "virtqueue size is not powerof 2");
357 snprintf(vq_name, sizeof(vq_name), "port%d_vq%d",
358 dev->data->port_id, vtpci_queue_idx);
360 size = RTE_ALIGN_CEIL(sizeof(*vq) +
361 vq_size * sizeof(struct vq_desc_extra),
362 RTE_CACHE_LINE_SIZE);
363 if (queue_type == VTNET_TQ) {
365 * For each xmit packet, allocate a virtio_net_hdr
366 * and indirect ring elements
368 sz_hdr_mz = vq_size * sizeof(struct virtio_tx_region);
369 } else if (queue_type == VTNET_CQ) {
370 /* Allocate a page for control vq command, data and status */
371 sz_hdr_mz = PAGE_SIZE;
374 vq = rte_zmalloc_socket(vq_name, size, RTE_CACHE_LINE_SIZE,
377 PMD_INIT_LOG(ERR, "can not allocate vq");
380 hw->vqs[vtpci_queue_idx] = vq;
383 vq->vq_queue_index = vtpci_queue_idx;
384 vq->vq_nentries = vq_size;
387 * Reserve a memzone for vring elements
389 size = vring_size(vq_size, VIRTIO_PCI_VRING_ALIGN);
390 vq->vq_ring_size = RTE_ALIGN_CEIL(size, VIRTIO_PCI_VRING_ALIGN);
391 PMD_INIT_LOG(DEBUG, "vring_size: %d, rounded_vring_size: %d",
392 size, vq->vq_ring_size);
394 mz = rte_memzone_reserve_aligned(vq_name, vq->vq_ring_size,
395 SOCKET_ID_ANY, RTE_MEMZONE_IOVA_CONTIG,
396 VIRTIO_PCI_VRING_ALIGN);
398 if (rte_errno == EEXIST)
399 mz = rte_memzone_lookup(vq_name);
406 memset(mz->addr, 0, mz->len);
408 vq->vq_ring_mem = mz->iova;
409 vq->vq_ring_virt_mem = mz->addr;
410 PMD_INIT_LOG(DEBUG, "vq->vq_ring_mem: 0x%" PRIx64,
412 PMD_INIT_LOG(DEBUG, "vq->vq_ring_virt_mem: 0x%" PRIx64,
413 (uint64_t)(uintptr_t)mz->addr);
415 virtio_init_vring(vq);
418 snprintf(vq_hdr_name, sizeof(vq_hdr_name), "port%d_vq%d_hdr",
419 dev->data->port_id, vtpci_queue_idx);
420 hdr_mz = rte_memzone_reserve_aligned(vq_hdr_name, sz_hdr_mz,
421 SOCKET_ID_ANY, RTE_MEMZONE_IOVA_CONTIG,
422 RTE_CACHE_LINE_SIZE);
423 if (hdr_mz == NULL) {
424 if (rte_errno == EEXIST)
425 hdr_mz = rte_memzone_lookup(vq_hdr_name);
426 if (hdr_mz == NULL) {
433 if (queue_type == VTNET_RQ) {
434 size_t sz_sw = (RTE_PMD_VIRTIO_RX_MAX_BURST + vq_size) *
435 sizeof(vq->sw_ring[0]);
437 sw_ring = rte_zmalloc_socket("sw_ring", sz_sw,
438 RTE_CACHE_LINE_SIZE, SOCKET_ID_ANY);
440 PMD_INIT_LOG(ERR, "can not allocate RX soft ring");
445 vq->sw_ring = sw_ring;
448 rxvq->port_id = dev->data->port_id;
450 } else if (queue_type == VTNET_TQ) {
453 txvq->port_id = dev->data->port_id;
455 txvq->virtio_net_hdr_mz = hdr_mz;
456 txvq->virtio_net_hdr_mem = hdr_mz->iova;
457 } else if (queue_type == VTNET_CQ) {
461 cvq->virtio_net_hdr_mz = hdr_mz;
462 cvq->virtio_net_hdr_mem = hdr_mz->iova;
463 memset(cvq->virtio_net_hdr_mz->addr, 0, PAGE_SIZE);
468 /* For virtio_user case (that is when hw->dev is NULL), we use
469 * virtual address. And we need properly set _offset_, please see
470 * VIRTIO_MBUF_DATA_DMA_ADDR in virtqueue.h for more information.
472 if (!hw->virtio_user_dev)
473 vq->offset = offsetof(struct rte_mbuf, buf_iova);
475 vq->vq_ring_mem = (uintptr_t)mz->addr;
476 vq->offset = offsetof(struct rte_mbuf, buf_addr);
477 if (queue_type == VTNET_TQ)
478 txvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr;
479 else if (queue_type == VTNET_CQ)
480 cvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr;
483 if (queue_type == VTNET_TQ) {
484 struct virtio_tx_region *txr;
488 memset(txr, 0, vq_size * sizeof(*txr));
489 for (i = 0; i < vq_size; i++) {
490 struct vring_desc *start_dp = txr[i].tx_indir;
492 vring_desc_init(start_dp, RTE_DIM(txr[i].tx_indir));
494 /* first indirect descriptor is always the tx header */
495 start_dp->addr = txvq->virtio_net_hdr_mem
497 + offsetof(struct virtio_tx_region, tx_hdr);
499 start_dp->len = hw->vtnet_hdr_size;
500 start_dp->flags = VRING_DESC_F_NEXT;
504 if (VTPCI_OPS(hw)->setup_queue(hw, vq) < 0) {
505 PMD_INIT_LOG(ERR, "setup_queue failed");
513 rte_memzone_free(hdr_mz);
514 rte_memzone_free(mz);
521 virtio_free_queues(struct virtio_hw *hw)
523 uint16_t nr_vq = virtio_get_nr_vq(hw);
524 struct virtqueue *vq;
531 for (i = 0; i < nr_vq; i++) {
536 queue_type = virtio_get_queue_type(hw, i);
537 if (queue_type == VTNET_RQ) {
538 rte_free(vq->sw_ring);
539 rte_memzone_free(vq->rxq.mz);
540 } else if (queue_type == VTNET_TQ) {
541 rte_memzone_free(vq->txq.mz);
542 rte_memzone_free(vq->txq.virtio_net_hdr_mz);
544 rte_memzone_free(vq->cq.mz);
545 rte_memzone_free(vq->cq.virtio_net_hdr_mz);
557 virtio_alloc_queues(struct rte_eth_dev *dev)
559 struct virtio_hw *hw = dev->data->dev_private;
560 uint16_t nr_vq = virtio_get_nr_vq(hw);
564 hw->vqs = rte_zmalloc(NULL, sizeof(struct virtqueue *) * nr_vq, 0);
566 PMD_INIT_LOG(ERR, "failed to allocate vqs");
570 for (i = 0; i < nr_vq; i++) {
571 ret = virtio_init_queue(dev, i);
573 virtio_free_queues(hw);
581 static void virtio_queues_unbind_intr(struct rte_eth_dev *dev);
584 virtio_dev_close(struct rte_eth_dev *dev)
586 struct virtio_hw *hw = dev->data->dev_private;
587 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf;
589 PMD_INIT_LOG(DEBUG, "virtio_dev_close");
596 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
597 VTPCI_OPS(hw)->set_config_irq(hw, VIRTIO_MSI_NO_VECTOR);
599 virtio_queues_unbind_intr(dev);
601 if (intr_conf->lsc || intr_conf->rxq) {
602 virtio_intr_disable(dev);
603 rte_intr_efd_disable(dev->intr_handle);
604 rte_free(dev->intr_handle->intr_vec);
605 dev->intr_handle->intr_vec = NULL;
609 virtio_dev_free_mbufs(dev);
610 virtio_free_queues(hw);
614 virtio_dev_promiscuous_enable(struct rte_eth_dev *dev)
616 struct virtio_hw *hw = dev->data->dev_private;
617 struct virtio_pmd_ctrl ctrl;
621 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
622 PMD_INIT_LOG(INFO, "host does not support rx control");
626 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
627 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
631 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
633 PMD_INIT_LOG(ERR, "Failed to enable promisc");
637 virtio_dev_promiscuous_disable(struct rte_eth_dev *dev)
639 struct virtio_hw *hw = dev->data->dev_private;
640 struct virtio_pmd_ctrl ctrl;
644 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
645 PMD_INIT_LOG(INFO, "host does not support rx control");
649 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
650 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
654 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
656 PMD_INIT_LOG(ERR, "Failed to disable promisc");
660 virtio_dev_allmulticast_enable(struct rte_eth_dev *dev)
662 struct virtio_hw *hw = dev->data->dev_private;
663 struct virtio_pmd_ctrl ctrl;
667 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
668 PMD_INIT_LOG(INFO, "host does not support rx control");
672 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
673 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
677 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
679 PMD_INIT_LOG(ERR, "Failed to enable allmulticast");
683 virtio_dev_allmulticast_disable(struct rte_eth_dev *dev)
685 struct virtio_hw *hw = dev->data->dev_private;
686 struct virtio_pmd_ctrl ctrl;
690 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
691 PMD_INIT_LOG(INFO, "host does not support rx control");
695 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
696 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
700 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
702 PMD_INIT_LOG(ERR, "Failed to disable allmulticast");
705 #define VLAN_TAG_LEN 4 /* 802.3ac tag (not DMA'd) */
707 virtio_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
709 struct virtio_hw *hw = dev->data->dev_private;
710 uint32_t ether_hdr_len = ETHER_HDR_LEN + VLAN_TAG_LEN +
712 uint32_t frame_size = mtu + ether_hdr_len;
713 uint32_t max_frame_size = hw->max_mtu + ether_hdr_len;
715 max_frame_size = RTE_MIN(max_frame_size, VIRTIO_MAX_RX_PKTLEN);
717 if (mtu < ETHER_MIN_MTU || frame_size > max_frame_size) {
718 PMD_INIT_LOG(ERR, "MTU should be between %d and %d",
719 ETHER_MIN_MTU, max_frame_size - ether_hdr_len);
726 virtio_dev_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id)
728 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id];
729 struct virtqueue *vq = rxvq->vq;
731 virtqueue_enable_intr(vq);
736 virtio_dev_rx_queue_intr_disable(struct rte_eth_dev *dev, uint16_t queue_id)
738 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id];
739 struct virtqueue *vq = rxvq->vq;
741 virtqueue_disable_intr(vq);
746 * dev_ops for virtio, bare necessities for basic operation
748 static const struct eth_dev_ops virtio_eth_dev_ops = {
749 .dev_configure = virtio_dev_configure,
750 .dev_start = virtio_dev_start,
751 .dev_stop = virtio_dev_stop,
752 .dev_close = virtio_dev_close,
753 .promiscuous_enable = virtio_dev_promiscuous_enable,
754 .promiscuous_disable = virtio_dev_promiscuous_disable,
755 .allmulticast_enable = virtio_dev_allmulticast_enable,
756 .allmulticast_disable = virtio_dev_allmulticast_disable,
757 .mtu_set = virtio_mtu_set,
758 .dev_infos_get = virtio_dev_info_get,
759 .stats_get = virtio_dev_stats_get,
760 .xstats_get = virtio_dev_xstats_get,
761 .xstats_get_names = virtio_dev_xstats_get_names,
762 .stats_reset = virtio_dev_stats_reset,
763 .xstats_reset = virtio_dev_stats_reset,
764 .link_update = virtio_dev_link_update,
765 .vlan_offload_set = virtio_dev_vlan_offload_set,
766 .rx_queue_setup = virtio_dev_rx_queue_setup,
767 .rx_queue_intr_enable = virtio_dev_rx_queue_intr_enable,
768 .rx_queue_intr_disable = virtio_dev_rx_queue_intr_disable,
769 .rx_queue_release = virtio_dev_queue_release,
770 .rx_descriptor_done = virtio_dev_rx_queue_done,
771 .tx_queue_setup = virtio_dev_tx_queue_setup,
772 .tx_queue_release = virtio_dev_queue_release,
773 /* collect stats per queue */
774 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set,
775 .vlan_filter_set = virtio_vlan_filter_set,
776 .mac_addr_add = virtio_mac_addr_add,
777 .mac_addr_remove = virtio_mac_addr_remove,
778 .mac_addr_set = virtio_mac_addr_set,
782 virtio_update_stats(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
786 for (i = 0; i < dev->data->nb_tx_queues; i++) {
787 const struct virtnet_tx *txvq = dev->data->tx_queues[i];
791 stats->opackets += txvq->stats.packets;
792 stats->obytes += txvq->stats.bytes;
793 stats->oerrors += txvq->stats.errors;
795 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
796 stats->q_opackets[i] = txvq->stats.packets;
797 stats->q_obytes[i] = txvq->stats.bytes;
801 for (i = 0; i < dev->data->nb_rx_queues; i++) {
802 const struct virtnet_rx *rxvq = dev->data->rx_queues[i];
806 stats->ipackets += rxvq->stats.packets;
807 stats->ibytes += rxvq->stats.bytes;
808 stats->ierrors += rxvq->stats.errors;
810 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
811 stats->q_ipackets[i] = rxvq->stats.packets;
812 stats->q_ibytes[i] = rxvq->stats.bytes;
816 stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed;
819 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev,
820 struct rte_eth_xstat_name *xstats_names,
821 __rte_unused unsigned limit)
827 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS +
828 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS;
830 if (xstats_names != NULL) {
831 /* Note: limit checked in rte_eth_xstats_names() */
833 for (i = 0; i < dev->data->nb_rx_queues; i++) {
834 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
837 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) {
838 snprintf(xstats_names[count].name,
839 sizeof(xstats_names[count].name),
841 rte_virtio_rxq_stat_strings[t].name);
846 for (i = 0; i < dev->data->nb_tx_queues; i++) {
847 struct virtnet_tx *txvq = dev->data->tx_queues[i];
850 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) {
851 snprintf(xstats_names[count].name,
852 sizeof(xstats_names[count].name),
854 rte_virtio_txq_stat_strings[t].name);
864 virtio_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats,
870 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS +
871 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS;
876 for (i = 0; i < dev->data->nb_rx_queues; i++) {
877 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
884 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) {
885 xstats[count].value = *(uint64_t *)(((char *)rxvq) +
886 rte_virtio_rxq_stat_strings[t].offset);
887 xstats[count].id = count;
892 for (i = 0; i < dev->data->nb_tx_queues; i++) {
893 struct virtnet_tx *txvq = dev->data->tx_queues[i];
900 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) {
901 xstats[count].value = *(uint64_t *)(((char *)txvq) +
902 rte_virtio_txq_stat_strings[t].offset);
903 xstats[count].id = count;
912 virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
914 virtio_update_stats(dev, stats);
920 virtio_dev_stats_reset(struct rte_eth_dev *dev)
924 for (i = 0; i < dev->data->nb_tx_queues; i++) {
925 struct virtnet_tx *txvq = dev->data->tx_queues[i];
929 txvq->stats.packets = 0;
930 txvq->stats.bytes = 0;
931 txvq->stats.errors = 0;
932 txvq->stats.multicast = 0;
933 txvq->stats.broadcast = 0;
934 memset(txvq->stats.size_bins, 0,
935 sizeof(txvq->stats.size_bins[0]) * 8);
938 for (i = 0; i < dev->data->nb_rx_queues; i++) {
939 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
943 rxvq->stats.packets = 0;
944 rxvq->stats.bytes = 0;
945 rxvq->stats.errors = 0;
946 rxvq->stats.multicast = 0;
947 rxvq->stats.broadcast = 0;
948 memset(rxvq->stats.size_bins, 0,
949 sizeof(rxvq->stats.size_bins[0]) * 8);
954 virtio_set_hwaddr(struct virtio_hw *hw)
956 vtpci_write_dev_config(hw,
957 offsetof(struct virtio_net_config, mac),
958 &hw->mac_addr, ETHER_ADDR_LEN);
962 virtio_get_hwaddr(struct virtio_hw *hw)
964 if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) {
965 vtpci_read_dev_config(hw,
966 offsetof(struct virtio_net_config, mac),
967 &hw->mac_addr, ETHER_ADDR_LEN);
969 eth_random_addr(&hw->mac_addr[0]);
970 virtio_set_hwaddr(hw);
975 virtio_mac_table_set(struct virtio_hw *hw,
976 const struct virtio_net_ctrl_mac *uc,
977 const struct virtio_net_ctrl_mac *mc)
979 struct virtio_pmd_ctrl ctrl;
982 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
983 PMD_DRV_LOG(INFO, "host does not support mac table");
987 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
988 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET;
990 len[0] = uc->entries * ETHER_ADDR_LEN + sizeof(uc->entries);
991 memcpy(ctrl.data, uc, len[0]);
993 len[1] = mc->entries * ETHER_ADDR_LEN + sizeof(mc->entries);
994 memcpy(ctrl.data + len[0], mc, len[1]);
996 err = virtio_send_command(hw->cvq, &ctrl, len, 2);
998 PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err);
1003 virtio_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac_addr,
1004 uint32_t index, uint32_t vmdq __rte_unused)
1006 struct virtio_hw *hw = dev->data->dev_private;
1007 const struct ether_addr *addrs = dev->data->mac_addrs;
1009 struct virtio_net_ctrl_mac *uc, *mc;
1011 if (index >= VIRTIO_MAX_MAC_ADDRS) {
1012 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
1016 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
1018 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
1021 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
1022 const struct ether_addr *addr
1023 = (i == index) ? mac_addr : addrs + i;
1024 struct virtio_net_ctrl_mac *tbl
1025 = is_multicast_ether_addr(addr) ? mc : uc;
1027 memcpy(&tbl->macs[tbl->entries++], addr, ETHER_ADDR_LEN);
1030 return virtio_mac_table_set(hw, uc, mc);
1034 virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
1036 struct virtio_hw *hw = dev->data->dev_private;
1037 struct ether_addr *addrs = dev->data->mac_addrs;
1038 struct virtio_net_ctrl_mac *uc, *mc;
1041 if (index >= VIRTIO_MAX_MAC_ADDRS) {
1042 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
1046 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
1048 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
1051 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
1052 struct virtio_net_ctrl_mac *tbl;
1054 if (i == index || is_zero_ether_addr(addrs + i))
1057 tbl = is_multicast_ether_addr(addrs + i) ? mc : uc;
1058 memcpy(&tbl->macs[tbl->entries++], addrs + i, ETHER_ADDR_LEN);
1061 virtio_mac_table_set(hw, uc, mc);
1065 virtio_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr)
1067 struct virtio_hw *hw = dev->data->dev_private;
1069 memcpy(hw->mac_addr, mac_addr, ETHER_ADDR_LEN);
1071 /* Use atomic update if available */
1072 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
1073 struct virtio_pmd_ctrl ctrl;
1074 int len = ETHER_ADDR_LEN;
1076 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
1077 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET;
1079 memcpy(ctrl.data, mac_addr, ETHER_ADDR_LEN);
1080 return virtio_send_command(hw->cvq, &ctrl, &len, 1);
1083 if (!vtpci_with_feature(hw, VIRTIO_NET_F_MAC))
1086 virtio_set_hwaddr(hw);
1091 virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
1093 struct virtio_hw *hw = dev->data->dev_private;
1094 struct virtio_pmd_ctrl ctrl;
1097 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN))
1100 ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN;
1101 ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL;
1102 memcpy(ctrl.data, &vlan_id, sizeof(vlan_id));
1103 len = sizeof(vlan_id);
1105 return virtio_send_command(hw->cvq, &ctrl, &len, 1);
1109 virtio_intr_enable(struct rte_eth_dev *dev)
1111 struct virtio_hw *hw = dev->data->dev_private;
1113 if (rte_intr_enable(dev->intr_handle) < 0)
1116 if (!hw->virtio_user_dev)
1117 hw->use_msix = vtpci_msix_detect(RTE_ETH_DEV_TO_PCI(dev));
1123 virtio_intr_disable(struct rte_eth_dev *dev)
1125 struct virtio_hw *hw = dev->data->dev_private;
1127 if (rte_intr_disable(dev->intr_handle) < 0)
1130 if (!hw->virtio_user_dev)
1131 hw->use_msix = vtpci_msix_detect(RTE_ETH_DEV_TO_PCI(dev));
1137 virtio_negotiate_features(struct virtio_hw *hw, uint64_t req_features)
1139 uint64_t host_features;
1141 /* Prepare guest_features: feature that driver wants to support */
1142 PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %" PRIx64,
1145 /* Read device(host) feature bits */
1146 host_features = VTPCI_OPS(hw)->get_features(hw);
1147 PMD_INIT_LOG(DEBUG, "host_features before negotiate = %" PRIx64,
1150 /* If supported, ensure MTU value is valid before acknowledging it. */
1151 if (host_features & req_features & (1ULL << VIRTIO_NET_F_MTU)) {
1152 struct virtio_net_config config;
1154 vtpci_read_dev_config(hw,
1155 offsetof(struct virtio_net_config, mtu),
1156 &config.mtu, sizeof(config.mtu));
1158 if (config.mtu < ETHER_MIN_MTU)
1159 req_features &= ~(1ULL << VIRTIO_NET_F_MTU);
1163 * Negotiate features: Subset of device feature bits are written back
1164 * guest feature bits.
1166 hw->guest_features = req_features;
1167 hw->guest_features = vtpci_negotiate_features(hw, host_features);
1168 PMD_INIT_LOG(DEBUG, "features after negotiate = %" PRIx64,
1169 hw->guest_features);
1172 if (!vtpci_with_feature(hw, VIRTIO_F_VERSION_1)) {
1174 "VIRTIO_F_VERSION_1 features is not enabled.");
1177 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_FEATURES_OK);
1178 if (!(vtpci_get_status(hw) & VIRTIO_CONFIG_STATUS_FEATURES_OK)) {
1180 "failed to set FEATURES_OK status!");
1185 hw->req_guest_features = req_features;
1191 virtio_dev_pause(struct rte_eth_dev *dev)
1193 struct virtio_hw *hw = dev->data->dev_private;
1195 rte_spinlock_lock(&hw->state_lock);
1197 if (hw->started == 0) {
1198 /* Device is just stopped. */
1199 rte_spinlock_unlock(&hw->state_lock);
1204 * Prevent the worker threads from touching queues to avoid contention,
1205 * 1 ms should be enough for the ongoing Tx function to finish.
1212 * Recover hw state to let the worker threads continue.
1215 virtio_dev_resume(struct rte_eth_dev *dev)
1217 struct virtio_hw *hw = dev->data->dev_private;
1220 rte_spinlock_unlock(&hw->state_lock);
1224 * Should be called only after device is paused.
1227 virtio_inject_pkts(struct rte_eth_dev *dev, struct rte_mbuf **tx_pkts,
1230 struct virtio_hw *hw = dev->data->dev_private;
1231 struct virtnet_tx *txvq = dev->data->tx_queues[0];
1234 hw->inject_pkts = tx_pkts;
1235 ret = dev->tx_pkt_burst(txvq, tx_pkts, nb_pkts);
1236 hw->inject_pkts = NULL;
1242 virtio_notify_peers(struct rte_eth_dev *dev)
1244 struct virtio_hw *hw = dev->data->dev_private;
1245 struct virtnet_rx *rxvq;
1246 struct rte_mbuf *rarp_mbuf;
1248 if (!dev->data->rx_queues)
1251 rxvq = dev->data->rx_queues[0];
1255 rarp_mbuf = rte_net_make_rarp_packet(rxvq->mpool,
1256 (struct ether_addr *)hw->mac_addr);
1257 if (rarp_mbuf == NULL) {
1258 PMD_DRV_LOG(ERR, "failed to make RARP packet.");
1262 /* If virtio port just stopped, no need to send RARP */
1263 if (virtio_dev_pause(dev) < 0) {
1264 rte_pktmbuf_free(rarp_mbuf);
1268 virtio_inject_pkts(dev, &rarp_mbuf, 1);
1269 virtio_dev_resume(dev);
1273 virtio_ack_link_announce(struct rte_eth_dev *dev)
1275 struct virtio_hw *hw = dev->data->dev_private;
1276 struct virtio_pmd_ctrl ctrl;
1278 ctrl.hdr.class = VIRTIO_NET_CTRL_ANNOUNCE;
1279 ctrl.hdr.cmd = VIRTIO_NET_CTRL_ANNOUNCE_ACK;
1281 virtio_send_command(hw->cvq, &ctrl, NULL, 0);
1285 * Process virtio config changed interrupt. Call the callback
1286 * if link state changed, generate gratuitous RARP packet if
1287 * the status indicates an ANNOUNCE.
1290 virtio_interrupt_handler(void *param)
1292 struct rte_eth_dev *dev = param;
1293 struct virtio_hw *hw = dev->data->dev_private;
1297 /* Read interrupt status which clears interrupt */
1298 isr = vtpci_isr(hw);
1299 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr);
1301 if (virtio_intr_enable(dev) < 0)
1302 PMD_DRV_LOG(ERR, "interrupt enable failed");
1304 if (isr & VIRTIO_PCI_ISR_CONFIG) {
1305 if (virtio_dev_link_update(dev, 0) == 0)
1306 _rte_eth_dev_callback_process(dev,
1307 RTE_ETH_EVENT_INTR_LSC,
1310 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1311 vtpci_read_dev_config(hw,
1312 offsetof(struct virtio_net_config, status),
1313 &status, sizeof(status));
1314 if (status & VIRTIO_NET_S_ANNOUNCE) {
1315 virtio_notify_peers(dev);
1317 virtio_ack_link_announce(dev);
1323 /* set rx and tx handlers according to what is supported */
1325 set_rxtx_funcs(struct rte_eth_dev *eth_dev)
1327 struct virtio_hw *hw = eth_dev->data->dev_private;
1329 if (hw->use_simple_rx) {
1330 PMD_INIT_LOG(INFO, "virtio: using simple Rx path on port %u",
1331 eth_dev->data->port_id);
1332 eth_dev->rx_pkt_burst = virtio_recv_pkts_vec;
1333 } else if (hw->use_inorder_rx) {
1335 "virtio: using inorder mergeable buffer Rx path on port %u",
1336 eth_dev->data->port_id);
1337 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts_inorder;
1338 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
1340 "virtio: using mergeable buffer Rx path on port %u",
1341 eth_dev->data->port_id);
1342 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts;
1344 PMD_INIT_LOG(INFO, "virtio: using standard Rx path on port %u",
1345 eth_dev->data->port_id);
1346 eth_dev->rx_pkt_burst = &virtio_recv_pkts;
1349 if (hw->use_inorder_tx) {
1350 PMD_INIT_LOG(INFO, "virtio: using inorder Tx path on port %u",
1351 eth_dev->data->port_id);
1352 eth_dev->tx_pkt_burst = virtio_xmit_pkts_inorder;
1354 PMD_INIT_LOG(INFO, "virtio: using standard Tx path on port %u",
1355 eth_dev->data->port_id);
1356 eth_dev->tx_pkt_burst = virtio_xmit_pkts;
1360 /* Only support 1:1 queue/interrupt mapping so far.
1361 * TODO: support n:1 queue/interrupt mapping when there are limited number of
1362 * interrupt vectors (<N+1).
1365 virtio_queues_bind_intr(struct rte_eth_dev *dev)
1368 struct virtio_hw *hw = dev->data->dev_private;
1370 PMD_INIT_LOG(INFO, "queue/interrupt binding");
1371 for (i = 0; i < dev->data->nb_rx_queues; ++i) {
1372 dev->intr_handle->intr_vec[i] = i + 1;
1373 if (VTPCI_OPS(hw)->set_queue_irq(hw, hw->vqs[i * 2], i + 1) ==
1374 VIRTIO_MSI_NO_VECTOR) {
1375 PMD_DRV_LOG(ERR, "failed to set queue vector");
1384 virtio_queues_unbind_intr(struct rte_eth_dev *dev)
1387 struct virtio_hw *hw = dev->data->dev_private;
1389 PMD_INIT_LOG(INFO, "queue/interrupt unbinding");
1390 for (i = 0; i < dev->data->nb_rx_queues; ++i)
1391 VTPCI_OPS(hw)->set_queue_irq(hw,
1392 hw->vqs[i * VTNET_CQ],
1393 VIRTIO_MSI_NO_VECTOR);
1397 virtio_configure_intr(struct rte_eth_dev *dev)
1399 struct virtio_hw *hw = dev->data->dev_private;
1401 if (!rte_intr_cap_multiple(dev->intr_handle)) {
1402 PMD_INIT_LOG(ERR, "Multiple intr vector not supported");
1406 if (rte_intr_efd_enable(dev->intr_handle, dev->data->nb_rx_queues)) {
1407 PMD_INIT_LOG(ERR, "Fail to create eventfd");
1411 if (!dev->intr_handle->intr_vec) {
1412 dev->intr_handle->intr_vec =
1413 rte_zmalloc("intr_vec",
1414 hw->max_queue_pairs * sizeof(int), 0);
1415 if (!dev->intr_handle->intr_vec) {
1416 PMD_INIT_LOG(ERR, "Failed to allocate %u rxq vectors",
1417 hw->max_queue_pairs);
1422 /* Re-register callback to update max_intr */
1423 rte_intr_callback_unregister(dev->intr_handle,
1424 virtio_interrupt_handler,
1426 rte_intr_callback_register(dev->intr_handle,
1427 virtio_interrupt_handler,
1430 /* DO NOT try to remove this! This function will enable msix, or QEMU
1431 * will encounter SIGSEGV when DRIVER_OK is sent.
1432 * And for legacy devices, this should be done before queue/vec binding
1433 * to change the config size from 20 to 24, or VIRTIO_MSI_QUEUE_VECTOR
1434 * (22) will be ignored.
1436 if (virtio_intr_enable(dev) < 0) {
1437 PMD_DRV_LOG(ERR, "interrupt enable failed");
1441 if (virtio_queues_bind_intr(dev) < 0) {
1442 PMD_INIT_LOG(ERR, "Failed to bind queue/interrupt");
1449 /* reset device and renegotiate features if needed */
1451 virtio_init_device(struct rte_eth_dev *eth_dev, uint64_t req_features)
1453 struct virtio_hw *hw = eth_dev->data->dev_private;
1454 struct virtio_net_config *config;
1455 struct virtio_net_config local_config;
1456 struct rte_pci_device *pci_dev = NULL;
1459 /* Reset the device although not necessary at startup */
1463 virtio_dev_free_mbufs(eth_dev);
1464 virtio_free_queues(hw);
1467 /* Tell the host we've noticed this device. */
1468 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_ACK);
1470 /* Tell the host we've known how to drive the device. */
1471 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER);
1472 if (virtio_negotiate_features(hw, req_features) < 0)
1475 if (!hw->virtio_user_dev) {
1476 pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
1477 rte_eth_copy_pci_info(eth_dev, pci_dev);
1480 /* If host does not support both status and MSI-X then disable LSC */
1481 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS) &&
1482 hw->use_msix != VIRTIO_MSIX_NONE)
1483 eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC;
1485 eth_dev->data->dev_flags &= ~RTE_ETH_DEV_INTR_LSC;
1487 /* Setting up rx_header size for the device */
1488 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF) ||
1489 vtpci_with_feature(hw, VIRTIO_F_VERSION_1))
1490 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf);
1492 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr);
1494 /* Copy the permanent MAC address to: virtio_hw */
1495 virtio_get_hwaddr(hw);
1496 ether_addr_copy((struct ether_addr *) hw->mac_addr,
1497 ð_dev->data->mac_addrs[0]);
1499 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1500 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2],
1501 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]);
1503 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) {
1504 config = &local_config;
1506 vtpci_read_dev_config(hw,
1507 offsetof(struct virtio_net_config, mac),
1508 &config->mac, sizeof(config->mac));
1510 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1511 vtpci_read_dev_config(hw,
1512 offsetof(struct virtio_net_config, status),
1513 &config->status, sizeof(config->status));
1516 "VIRTIO_NET_F_STATUS is not supported");
1520 if (vtpci_with_feature(hw, VIRTIO_NET_F_MQ)) {
1521 vtpci_read_dev_config(hw,
1522 offsetof(struct virtio_net_config, max_virtqueue_pairs),
1523 &config->max_virtqueue_pairs,
1524 sizeof(config->max_virtqueue_pairs));
1527 "VIRTIO_NET_F_MQ is not supported");
1528 config->max_virtqueue_pairs = 1;
1531 hw->max_queue_pairs = config->max_virtqueue_pairs;
1533 if (vtpci_with_feature(hw, VIRTIO_NET_F_MTU)) {
1534 vtpci_read_dev_config(hw,
1535 offsetof(struct virtio_net_config, mtu),
1537 sizeof(config->mtu));
1540 * MTU value has already been checked at negotiation
1541 * time, but check again in case it has changed since
1542 * then, which should not happen.
1544 if (config->mtu < ETHER_MIN_MTU) {
1545 PMD_INIT_LOG(ERR, "invalid max MTU value (%u)",
1550 hw->max_mtu = config->mtu;
1551 /* Set initial MTU to maximum one supported by vhost */
1552 eth_dev->data->mtu = config->mtu;
1555 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - ETHER_HDR_LEN -
1556 VLAN_TAG_LEN - hw->vtnet_hdr_size;
1559 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d",
1560 config->max_virtqueue_pairs);
1561 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status);
1563 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1564 config->mac[0], config->mac[1],
1565 config->mac[2], config->mac[3],
1566 config->mac[4], config->mac[5]);
1568 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=1");
1569 hw->max_queue_pairs = 1;
1570 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - ETHER_HDR_LEN -
1571 VLAN_TAG_LEN - hw->vtnet_hdr_size;
1574 ret = virtio_alloc_queues(eth_dev);
1578 if (eth_dev->data->dev_conf.intr_conf.rxq) {
1579 if (virtio_configure_intr(eth_dev) < 0) {
1580 PMD_INIT_LOG(ERR, "failed to configure interrupt");
1585 vtpci_reinit_complete(hw);
1588 PMD_INIT_LOG(DEBUG, "port %d vendorID=0x%x deviceID=0x%x",
1589 eth_dev->data->port_id, pci_dev->id.vendor_id,
1590 pci_dev->id.device_id);
1596 * Remap the PCI device again (IO port map for legacy device and
1597 * memory map for modern device), so that the secondary process
1598 * could have the PCI initiated correctly.
1601 virtio_remap_pci(struct rte_pci_device *pci_dev, struct virtio_hw *hw)
1605 * We don't have to re-parse the PCI config space, since
1606 * rte_pci_map_device() makes sure the mapped address
1607 * in secondary process would equal to the one mapped in
1608 * the primary process: error will be returned if that
1609 * requirement is not met.
1611 * That said, we could simply reuse all cap pointers
1612 * (such as dev_cfg, common_cfg, etc.) parsed from the
1613 * primary process, which is stored in shared memory.
1615 if (rte_pci_map_device(pci_dev)) {
1616 PMD_INIT_LOG(DEBUG, "failed to map pci device!");
1620 if (rte_pci_ioport_map(pci_dev, 0, VTPCI_IO(hw)) < 0)
1628 virtio_set_vtpci_ops(struct virtio_hw *hw)
1630 #ifdef RTE_VIRTIO_USER
1631 if (hw->virtio_user_dev)
1632 VTPCI_OPS(hw) = &virtio_user_ops;
1636 VTPCI_OPS(hw) = &modern_ops;
1638 VTPCI_OPS(hw) = &legacy_ops;
1642 * This function is based on probe() function in virtio_pci.c
1643 * It returns 0 on success.
1646 eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
1648 struct virtio_hw *hw = eth_dev->data->dev_private;
1651 RTE_BUILD_BUG_ON(RTE_PKTMBUF_HEADROOM < sizeof(struct virtio_net_hdr_mrg_rxbuf));
1653 eth_dev->dev_ops = &virtio_eth_dev_ops;
1655 if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
1656 if (!hw->virtio_user_dev) {
1657 ret = virtio_remap_pci(RTE_ETH_DEV_TO_PCI(eth_dev), hw);
1662 virtio_set_vtpci_ops(hw);
1663 set_rxtx_funcs(eth_dev);
1668 /* Allocate memory for storing MAC addresses */
1669 eth_dev->data->mac_addrs = rte_zmalloc("virtio", VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN, 0);
1670 if (eth_dev->data->mac_addrs == NULL) {
1672 "Failed to allocate %d bytes needed to store MAC addresses",
1673 VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN);
1677 hw->port_id = eth_dev->data->port_id;
1678 /* For virtio_user case the hw->virtio_user_dev is populated by
1679 * virtio_user_eth_dev_alloc() before eth_virtio_dev_init() is called.
1681 if (!hw->virtio_user_dev) {
1682 ret = vtpci_init(RTE_ETH_DEV_TO_PCI(eth_dev), hw);
1687 /* reset device and negotiate default features */
1688 ret = virtio_init_device(eth_dev, VIRTIO_PMD_DEFAULT_GUEST_FEATURES);
1695 rte_free(eth_dev->data->mac_addrs);
1700 eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev)
1702 PMD_INIT_FUNC_TRACE();
1704 if (rte_eal_process_type() == RTE_PROC_SECONDARY)
1707 virtio_dev_stop(eth_dev);
1708 virtio_dev_close(eth_dev);
1710 eth_dev->dev_ops = NULL;
1711 eth_dev->tx_pkt_burst = NULL;
1712 eth_dev->rx_pkt_burst = NULL;
1714 if (eth_dev->device)
1715 rte_pci_unmap_device(RTE_ETH_DEV_TO_PCI(eth_dev));
1717 PMD_INIT_LOG(DEBUG, "dev_uninit completed");
1722 static int vdpa_check_handler(__rte_unused const char *key,
1723 const char *value, __rte_unused void *opaque)
1725 if (strcmp(value, "1"))
1732 vdpa_mode_selected(struct rte_devargs *devargs)
1734 struct rte_kvargs *kvlist;
1735 const char *key = "vdpa";
1738 if (devargs == NULL)
1741 kvlist = rte_kvargs_parse(devargs->args, NULL);
1745 if (!rte_kvargs_count(kvlist, key))
1748 /* vdpa mode selected when there's a key-value pair: vdpa=1 */
1749 if (rte_kvargs_process(kvlist, key,
1750 vdpa_check_handler, NULL) < 0) {
1756 rte_kvargs_free(kvlist);
1760 static int eth_virtio_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
1761 struct rte_pci_device *pci_dev)
1763 if (rte_eal_iopl_init() != 0) {
1764 PMD_INIT_LOG(ERR, "IOPL call failed - cannot use virtio PMD");
1768 /* virtio pmd skips probe if device needs to work in vdpa mode */
1769 if (vdpa_mode_selected(pci_dev->device.devargs))
1772 return rte_eth_dev_pci_generic_probe(pci_dev, sizeof(struct virtio_hw),
1773 eth_virtio_dev_init);
1776 static int eth_virtio_pci_remove(struct rte_pci_device *pci_dev)
1778 return rte_eth_dev_pci_generic_remove(pci_dev, eth_virtio_dev_uninit);
1781 static struct rte_pci_driver rte_virtio_pmd = {
1783 .name = "net_virtio",
1785 .id_table = pci_id_virtio_map,
1787 .probe = eth_virtio_pci_probe,
1788 .remove = eth_virtio_pci_remove,
1791 RTE_INIT(rte_virtio_pmd_init)
1793 rte_eal_iopl_init();
1794 rte_pci_register(&rte_virtio_pmd);
1798 rx_offload_enabled(struct virtio_hw *hw)
1800 return vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM) ||
1801 vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) ||
1802 vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6);
1806 tx_offload_enabled(struct virtio_hw *hw)
1808 return vtpci_with_feature(hw, VIRTIO_NET_F_CSUM) ||
1809 vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO4) ||
1810 vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO6);
1814 * Configure virtio device
1815 * It returns 0 on success.
1818 virtio_dev_configure(struct rte_eth_dev *dev)
1820 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
1821 const struct rte_eth_txmode *txmode = &dev->data->dev_conf.txmode;
1822 struct virtio_hw *hw = dev->data->dev_private;
1823 uint64_t rx_offloads = rxmode->offloads;
1824 uint64_t tx_offloads = txmode->offloads;
1825 uint64_t req_features;
1828 PMD_INIT_LOG(DEBUG, "configure");
1829 req_features = VIRTIO_PMD_DEFAULT_GUEST_FEATURES;
1831 if (dev->data->dev_conf.intr_conf.rxq) {
1832 ret = virtio_init_device(dev, hw->req_guest_features);
1837 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM |
1838 DEV_RX_OFFLOAD_TCP_CKSUM))
1839 req_features |= (1ULL << VIRTIO_NET_F_GUEST_CSUM);
1841 if (rx_offloads & DEV_RX_OFFLOAD_TCP_LRO)
1843 (1ULL << VIRTIO_NET_F_GUEST_TSO4) |
1844 (1ULL << VIRTIO_NET_F_GUEST_TSO6);
1846 if (tx_offloads & (DEV_TX_OFFLOAD_UDP_CKSUM |
1847 DEV_TX_OFFLOAD_TCP_CKSUM))
1848 req_features |= (1ULL << VIRTIO_NET_F_CSUM);
1850 if (tx_offloads & DEV_TX_OFFLOAD_TCP_TSO)
1852 (1ULL << VIRTIO_NET_F_HOST_TSO4) |
1853 (1ULL << VIRTIO_NET_F_HOST_TSO6);
1855 /* if request features changed, reinit the device */
1856 if (req_features != hw->req_guest_features) {
1857 ret = virtio_init_device(dev, req_features);
1862 if ((rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM |
1863 DEV_RX_OFFLOAD_TCP_CKSUM)) &&
1864 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM)) {
1866 "rx checksum not available on this host");
1870 if ((rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) &&
1871 (!vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) ||
1872 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6))) {
1874 "Large Receive Offload not available on this host");
1878 /* start control queue */
1879 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ))
1880 virtio_dev_cq_start(dev);
1882 if (rx_offloads & DEV_RX_OFFLOAD_VLAN_STRIP)
1885 if ((rx_offloads & DEV_RX_OFFLOAD_VLAN_FILTER)
1886 && !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
1888 "vlan filtering not available on this host");
1892 hw->has_tx_offload = tx_offload_enabled(hw);
1893 hw->has_rx_offload = rx_offload_enabled(hw);
1895 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
1896 /* Enable vector (0) for Link State Intrerrupt */
1897 if (VTPCI_OPS(hw)->set_config_irq(hw, 0) ==
1898 VIRTIO_MSI_NO_VECTOR) {
1899 PMD_DRV_LOG(ERR, "failed to set config vector");
1903 rte_spinlock_init(&hw->state_lock);
1905 hw->use_simple_rx = 1;
1907 if (vtpci_with_feature(hw, VIRTIO_F_IN_ORDER)) {
1908 hw->use_inorder_tx = 1;
1909 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
1910 hw->use_inorder_rx = 1;
1911 hw->use_simple_rx = 0;
1913 hw->use_inorder_rx = 0;
1917 #if defined RTE_ARCH_ARM64 || defined RTE_ARCH_ARM
1918 if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON)) {
1919 hw->use_simple_rx = 0;
1922 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
1923 hw->use_simple_rx = 0;
1926 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM |
1927 DEV_RX_OFFLOAD_TCP_CKSUM |
1928 DEV_RX_OFFLOAD_TCP_LRO |
1929 DEV_RX_OFFLOAD_VLAN_STRIP))
1930 hw->use_simple_rx = 0;
1939 virtio_dev_start(struct rte_eth_dev *dev)
1941 uint16_t nb_queues, i;
1942 struct virtnet_rx *rxvq;
1943 struct virtnet_tx *txvq __rte_unused;
1944 struct virtio_hw *hw = dev->data->dev_private;
1947 /* Finish the initialization of the queues */
1948 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1949 ret = virtio_dev_rx_queue_setup_finish(dev, i);
1953 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1954 ret = virtio_dev_tx_queue_setup_finish(dev, i);
1959 /* check if lsc interrupt feature is enabled */
1960 if (dev->data->dev_conf.intr_conf.lsc) {
1961 if (!(dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)) {
1962 PMD_DRV_LOG(ERR, "link status not supported by host");
1967 /* Enable uio/vfio intr/eventfd mapping: althrough we already did that
1968 * in device configure, but it could be unmapped when device is
1971 if (dev->data->dev_conf.intr_conf.lsc ||
1972 dev->data->dev_conf.intr_conf.rxq) {
1973 virtio_intr_disable(dev);
1975 /* Setup interrupt callback */
1976 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
1977 rte_intr_callback_register(dev->intr_handle,
1978 virtio_interrupt_handler,
1981 if (virtio_intr_enable(dev) < 0) {
1982 PMD_DRV_LOG(ERR, "interrupt enable failed");
1987 /*Notify the backend
1988 *Otherwise the tap backend might already stop its queue due to fullness.
1989 *vhost backend will have no chance to be waked up
1991 nb_queues = RTE_MAX(dev->data->nb_rx_queues, dev->data->nb_tx_queues);
1992 if (hw->max_queue_pairs > 1) {
1993 if (virtio_set_multiple_queues(dev, nb_queues) != 0)
1997 PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues);
1999 for (i = 0; i < dev->data->nb_rx_queues; i++) {
2000 rxvq = dev->data->rx_queues[i];
2001 /* Flush the old packets */
2002 virtqueue_rxvq_flush(rxvq->vq);
2003 virtqueue_notify(rxvq->vq);
2006 for (i = 0; i < dev->data->nb_tx_queues; i++) {
2007 txvq = dev->data->tx_queues[i];
2008 virtqueue_notify(txvq->vq);
2011 PMD_INIT_LOG(DEBUG, "Notified backend at initialization");
2013 for (i = 0; i < dev->data->nb_rx_queues; i++) {
2014 rxvq = dev->data->rx_queues[i];
2015 VIRTQUEUE_DUMP(rxvq->vq);
2018 for (i = 0; i < dev->data->nb_tx_queues; i++) {
2019 txvq = dev->data->tx_queues[i];
2020 VIRTQUEUE_DUMP(txvq->vq);
2023 set_rxtx_funcs(dev);
2026 /* Initialize Link state */
2027 virtio_dev_link_update(dev, 0);
2032 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev)
2034 struct virtio_hw *hw = dev->data->dev_private;
2035 uint16_t nr_vq = virtio_get_nr_vq(hw);
2036 const char *type __rte_unused;
2037 unsigned int i, mbuf_num = 0;
2038 struct virtqueue *vq;
2039 struct rte_mbuf *buf;
2042 if (hw->vqs == NULL)
2045 for (i = 0; i < nr_vq; i++) {
2050 queue_type = virtio_get_queue_type(hw, i);
2051 if (queue_type == VTNET_RQ)
2053 else if (queue_type == VTNET_TQ)
2059 "Before freeing %s[%d] used and unused buf",
2063 while ((buf = virtqueue_detach_unused(vq)) != NULL) {
2064 rte_pktmbuf_free(buf);
2069 "After freeing %s[%d] used and unused buf",
2074 PMD_INIT_LOG(DEBUG, "%d mbufs freed", mbuf_num);
2078 * Stop device: disable interrupt and mark link down
2081 virtio_dev_stop(struct rte_eth_dev *dev)
2083 struct virtio_hw *hw = dev->data->dev_private;
2084 struct rte_eth_link link;
2085 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf;
2087 PMD_INIT_LOG(DEBUG, "stop");
2089 rte_spinlock_lock(&hw->state_lock);
2092 hw->started = false;
2094 if (intr_conf->lsc || intr_conf->rxq) {
2095 virtio_intr_disable(dev);
2097 /* Reset interrupt callback */
2098 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) {
2099 rte_intr_callback_unregister(dev->intr_handle,
2100 virtio_interrupt_handler,
2105 memset(&link, 0, sizeof(link));
2106 rte_eth_linkstatus_set(dev, &link);
2108 rte_spinlock_unlock(&hw->state_lock);
2112 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete)
2114 struct rte_eth_link link;
2116 struct virtio_hw *hw = dev->data->dev_private;
2118 memset(&link, 0, sizeof(link));
2119 link.link_duplex = ETH_LINK_FULL_DUPLEX;
2120 link.link_speed = ETH_SPEED_NUM_10G;
2121 link.link_autoneg = ETH_LINK_FIXED;
2124 link.link_status = ETH_LINK_DOWN;
2125 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
2126 PMD_INIT_LOG(DEBUG, "Get link status from hw");
2127 vtpci_read_dev_config(hw,
2128 offsetof(struct virtio_net_config, status),
2129 &status, sizeof(status));
2130 if ((status & VIRTIO_NET_S_LINK_UP) == 0) {
2131 link.link_status = ETH_LINK_DOWN;
2132 PMD_INIT_LOG(DEBUG, "Port %d is down",
2133 dev->data->port_id);
2135 link.link_status = ETH_LINK_UP;
2136 PMD_INIT_LOG(DEBUG, "Port %d is up",
2137 dev->data->port_id);
2140 link.link_status = ETH_LINK_UP;
2143 return rte_eth_linkstatus_set(dev, &link);
2147 virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask)
2149 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
2150 struct virtio_hw *hw = dev->data->dev_private;
2151 uint64_t offloads = rxmode->offloads;
2153 if (mask & ETH_VLAN_FILTER_MASK) {
2154 if ((offloads & DEV_RX_OFFLOAD_VLAN_FILTER) &&
2155 !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
2158 "vlan filtering not available on this host");
2164 if (mask & ETH_VLAN_STRIP_MASK)
2165 hw->vlan_strip = !!(offloads & DEV_RX_OFFLOAD_VLAN_STRIP);
2171 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
2173 uint64_t tso_mask, host_features;
2174 struct virtio_hw *hw = dev->data->dev_private;
2176 dev_info->speed_capa = ETH_LINK_SPEED_10G; /* fake value */
2178 dev_info->max_rx_queues =
2179 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_RX_QUEUES);
2180 dev_info->max_tx_queues =
2181 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_TX_QUEUES);
2182 dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE;
2183 dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN;
2184 dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS;
2186 host_features = VTPCI_OPS(hw)->get_features(hw);
2187 dev_info->rx_offload_capa = DEV_RX_OFFLOAD_VLAN_STRIP;
2188 if (host_features & (1ULL << VIRTIO_NET_F_GUEST_CSUM)) {
2189 dev_info->rx_offload_capa |=
2190 DEV_RX_OFFLOAD_TCP_CKSUM |
2191 DEV_RX_OFFLOAD_UDP_CKSUM;
2193 if (host_features & (1ULL << VIRTIO_NET_F_CTRL_VLAN))
2194 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_VLAN_FILTER;
2195 tso_mask = (1ULL << VIRTIO_NET_F_GUEST_TSO4) |
2196 (1ULL << VIRTIO_NET_F_GUEST_TSO6);
2197 if ((host_features & tso_mask) == tso_mask)
2198 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_TCP_LRO;
2200 dev_info->tx_offload_capa = DEV_TX_OFFLOAD_MULTI_SEGS |
2201 DEV_TX_OFFLOAD_VLAN_INSERT;
2202 if (host_features & (1ULL << VIRTIO_NET_F_CSUM)) {
2203 dev_info->tx_offload_capa |=
2204 DEV_TX_OFFLOAD_UDP_CKSUM |
2205 DEV_TX_OFFLOAD_TCP_CKSUM;
2207 tso_mask = (1ULL << VIRTIO_NET_F_HOST_TSO4) |
2208 (1ULL << VIRTIO_NET_F_HOST_TSO6);
2209 if ((host_features & tso_mask) == tso_mask)
2210 dev_info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO;
2214 * It enables testpmd to collect per queue stats.
2217 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev,
2218 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx,
2219 __rte_unused uint8_t is_rx)
2224 RTE_PMD_EXPORT_NAME(net_virtio, __COUNTER__);
2225 RTE_PMD_REGISTER_PCI_TABLE(net_virtio, pci_id_virtio_map);
2226 RTE_PMD_REGISTER_KMOD_DEP(net_virtio, "* igb_uio | uio_pci_generic | vfio-pci");
2228 RTE_INIT(virtio_init_log)
2230 virtio_logtype_init = rte_log_register("pmd.net.virtio.init");
2231 if (virtio_logtype_init >= 0)
2232 rte_log_set_level(virtio_logtype_init, RTE_LOG_NOTICE);
2233 virtio_logtype_driver = rte_log_register("pmd.net.virtio.driver");
2234 if (virtio_logtype_driver >= 0)
2235 rte_log_set_level(virtio_logtype_driver, RTE_LOG_NOTICE);