1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2016 Intel Corporation
11 #include <rte_ethdev_driver.h>
12 #include <rte_ethdev_pci.h>
13 #include <rte_memcpy.h>
14 #include <rte_string_fns.h>
15 #include <rte_memzone.h>
16 #include <rte_malloc.h>
17 #include <rte_branch_prediction.h>
19 #include <rte_bus_pci.h>
20 #include <rte_ether.h>
23 #include <rte_common.h>
24 #include <rte_errno.h>
25 #include <rte_cpuflags.h>
27 #include <rte_memory.h>
30 #include <rte_cycles.h>
31 #include <rte_kvargs.h>
33 #include "virtio_ethdev.h"
34 #include "virtio_pci.h"
35 #include "virtio_logs.h"
36 #include "virtqueue.h"
37 #include "virtio_rxtx.h"
39 static int eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev);
40 static int virtio_dev_configure(struct rte_eth_dev *dev);
41 static int virtio_dev_start(struct rte_eth_dev *dev);
42 static void virtio_dev_stop(struct rte_eth_dev *dev);
43 static void virtio_dev_promiscuous_enable(struct rte_eth_dev *dev);
44 static void virtio_dev_promiscuous_disable(struct rte_eth_dev *dev);
45 static void virtio_dev_allmulticast_enable(struct rte_eth_dev *dev);
46 static void virtio_dev_allmulticast_disable(struct rte_eth_dev *dev);
47 static void virtio_dev_info_get(struct rte_eth_dev *dev,
48 struct rte_eth_dev_info *dev_info);
49 static int virtio_dev_link_update(struct rte_eth_dev *dev,
50 int wait_to_complete);
51 static int virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask);
53 static void virtio_set_hwaddr(struct virtio_hw *hw);
54 static void virtio_get_hwaddr(struct virtio_hw *hw);
56 static int virtio_dev_stats_get(struct rte_eth_dev *dev,
57 struct rte_eth_stats *stats);
58 static int virtio_dev_xstats_get(struct rte_eth_dev *dev,
59 struct rte_eth_xstat *xstats, unsigned n);
60 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev,
61 struct rte_eth_xstat_name *xstats_names,
63 static void virtio_dev_stats_reset(struct rte_eth_dev *dev);
64 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev);
65 static int virtio_vlan_filter_set(struct rte_eth_dev *dev,
66 uint16_t vlan_id, int on);
67 static int virtio_mac_addr_add(struct rte_eth_dev *dev,
68 struct ether_addr *mac_addr,
69 uint32_t index, uint32_t vmdq);
70 static void virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index);
71 static int virtio_mac_addr_set(struct rte_eth_dev *dev,
72 struct ether_addr *mac_addr);
74 static int virtio_intr_disable(struct rte_eth_dev *dev);
76 static int virtio_dev_queue_stats_mapping_set(
77 struct rte_eth_dev *eth_dev,
82 int virtio_logtype_init;
83 int virtio_logtype_driver;
85 static void virtio_notify_peers(struct rte_eth_dev *dev);
86 static void virtio_ack_link_announce(struct rte_eth_dev *dev);
89 * The set of PCI devices this driver supports
91 static const struct rte_pci_id pci_id_virtio_map[] = {
92 { RTE_PCI_DEVICE(VIRTIO_PCI_VENDORID, VIRTIO_PCI_LEGACY_DEVICEID_NET) },
93 { RTE_PCI_DEVICE(VIRTIO_PCI_VENDORID, VIRTIO_PCI_MODERN_DEVICEID_NET) },
94 { .vendor_id = 0, /* sentinel */ },
97 struct rte_virtio_xstats_name_off {
98 char name[RTE_ETH_XSTATS_NAME_SIZE];
102 /* [rt]x_qX_ is prepended to the name string here */
103 static const struct rte_virtio_xstats_name_off rte_virtio_rxq_stat_strings[] = {
104 {"good_packets", offsetof(struct virtnet_rx, stats.packets)},
105 {"good_bytes", offsetof(struct virtnet_rx, stats.bytes)},
106 {"errors", offsetof(struct virtnet_rx, stats.errors)},
107 {"multicast_packets", offsetof(struct virtnet_rx, stats.multicast)},
108 {"broadcast_packets", offsetof(struct virtnet_rx, stats.broadcast)},
109 {"undersize_packets", offsetof(struct virtnet_rx, stats.size_bins[0])},
110 {"size_64_packets", offsetof(struct virtnet_rx, stats.size_bins[1])},
111 {"size_65_127_packets", offsetof(struct virtnet_rx, stats.size_bins[2])},
112 {"size_128_255_packets", offsetof(struct virtnet_rx, stats.size_bins[3])},
113 {"size_256_511_packets", offsetof(struct virtnet_rx, stats.size_bins[4])},
114 {"size_512_1023_packets", offsetof(struct virtnet_rx, stats.size_bins[5])},
115 {"size_1024_1518_packets", offsetof(struct virtnet_rx, stats.size_bins[6])},
116 {"size_1519_max_packets", offsetof(struct virtnet_rx, stats.size_bins[7])},
119 /* [rt]x_qX_ is prepended to the name string here */
120 static const struct rte_virtio_xstats_name_off rte_virtio_txq_stat_strings[] = {
121 {"good_packets", offsetof(struct virtnet_tx, stats.packets)},
122 {"good_bytes", offsetof(struct virtnet_tx, stats.bytes)},
123 {"errors", offsetof(struct virtnet_tx, stats.errors)},
124 {"multicast_packets", offsetof(struct virtnet_tx, stats.multicast)},
125 {"broadcast_packets", offsetof(struct virtnet_tx, stats.broadcast)},
126 {"undersize_packets", offsetof(struct virtnet_tx, stats.size_bins[0])},
127 {"size_64_packets", offsetof(struct virtnet_tx, stats.size_bins[1])},
128 {"size_65_127_packets", offsetof(struct virtnet_tx, stats.size_bins[2])},
129 {"size_128_255_packets", offsetof(struct virtnet_tx, stats.size_bins[3])},
130 {"size_256_511_packets", offsetof(struct virtnet_tx, stats.size_bins[4])},
131 {"size_512_1023_packets", offsetof(struct virtnet_tx, stats.size_bins[5])},
132 {"size_1024_1518_packets", offsetof(struct virtnet_tx, stats.size_bins[6])},
133 {"size_1519_max_packets", offsetof(struct virtnet_tx, stats.size_bins[7])},
136 #define VIRTIO_NB_RXQ_XSTATS (sizeof(rte_virtio_rxq_stat_strings) / \
137 sizeof(rte_virtio_rxq_stat_strings[0]))
138 #define VIRTIO_NB_TXQ_XSTATS (sizeof(rte_virtio_txq_stat_strings) / \
139 sizeof(rte_virtio_txq_stat_strings[0]))
141 struct virtio_hw_internal virtio_hw_internal[RTE_MAX_ETHPORTS];
144 virtio_send_command(struct virtnet_ctl *cvq, struct virtio_pmd_ctrl *ctrl,
145 int *dlen, int pkt_num)
149 virtio_net_ctrl_ack status = ~0;
150 struct virtio_pmd_ctrl *result;
151 struct virtqueue *vq;
153 ctrl->status = status;
155 if (!cvq || !cvq->vq) {
156 PMD_INIT_LOG(ERR, "Control queue is not supported.");
160 rte_spinlock_lock(&cvq->lock);
162 head = vq->vq_desc_head_idx;
164 PMD_INIT_LOG(DEBUG, "vq->vq_desc_head_idx = %d, status = %d, "
165 "vq->hw->cvq = %p vq = %p",
166 vq->vq_desc_head_idx, status, vq->hw->cvq, vq);
168 if (vq->vq_free_cnt < pkt_num + 2 || pkt_num < 1) {
169 rte_spinlock_unlock(&cvq->lock);
173 memcpy(cvq->virtio_net_hdr_mz->addr, ctrl,
174 sizeof(struct virtio_pmd_ctrl));
177 * Format is enforced in qemu code:
178 * One TX packet for header;
179 * At least one TX packet per argument;
180 * One RX packet for ACK.
182 vq->vq_ring.desc[head].flags = VRING_DESC_F_NEXT;
183 vq->vq_ring.desc[head].addr = cvq->virtio_net_hdr_mem;
184 vq->vq_ring.desc[head].len = sizeof(struct virtio_net_ctrl_hdr);
186 i = vq->vq_ring.desc[head].next;
188 for (k = 0; k < pkt_num; k++) {
189 vq->vq_ring.desc[i].flags = VRING_DESC_F_NEXT;
190 vq->vq_ring.desc[i].addr = cvq->virtio_net_hdr_mem
191 + sizeof(struct virtio_net_ctrl_hdr)
192 + sizeof(ctrl->status) + sizeof(uint8_t)*sum;
193 vq->vq_ring.desc[i].len = dlen[k];
196 i = vq->vq_ring.desc[i].next;
199 vq->vq_ring.desc[i].flags = VRING_DESC_F_WRITE;
200 vq->vq_ring.desc[i].addr = cvq->virtio_net_hdr_mem
201 + sizeof(struct virtio_net_ctrl_hdr);
202 vq->vq_ring.desc[i].len = sizeof(ctrl->status);
205 vq->vq_desc_head_idx = vq->vq_ring.desc[i].next;
207 vq_update_avail_ring(vq, head);
208 vq_update_avail_idx(vq);
210 PMD_INIT_LOG(DEBUG, "vq->vq_queue_index = %d", vq->vq_queue_index);
212 virtqueue_notify(vq);
215 while (VIRTQUEUE_NUSED(vq) == 0) {
220 while (VIRTQUEUE_NUSED(vq)) {
221 uint32_t idx, desc_idx, used_idx;
222 struct vring_used_elem *uep;
224 used_idx = (uint32_t)(vq->vq_used_cons_idx
225 & (vq->vq_nentries - 1));
226 uep = &vq->vq_ring.used->ring[used_idx];
227 idx = (uint32_t) uep->id;
230 while (vq->vq_ring.desc[desc_idx].flags & VRING_DESC_F_NEXT) {
231 desc_idx = vq->vq_ring.desc[desc_idx].next;
235 vq->vq_ring.desc[desc_idx].next = vq->vq_desc_head_idx;
236 vq->vq_desc_head_idx = idx;
238 vq->vq_used_cons_idx++;
242 PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\nvq->vq_desc_head_idx=%d",
243 vq->vq_free_cnt, vq->vq_desc_head_idx);
245 result = cvq->virtio_net_hdr_mz->addr;
247 rte_spinlock_unlock(&cvq->lock);
248 return result->status;
252 virtio_set_multiple_queues(struct rte_eth_dev *dev, uint16_t nb_queues)
254 struct virtio_hw *hw = dev->data->dev_private;
255 struct virtio_pmd_ctrl ctrl;
259 ctrl.hdr.class = VIRTIO_NET_CTRL_MQ;
260 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET;
261 memcpy(ctrl.data, &nb_queues, sizeof(uint16_t));
263 dlen[0] = sizeof(uint16_t);
265 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
267 PMD_INIT_LOG(ERR, "Multiqueue configured but send command "
268 "failed, this is too late now...");
276 virtio_dev_queue_release(void *queue __rte_unused)
282 virtio_get_nr_vq(struct virtio_hw *hw)
284 uint16_t nr_vq = hw->max_queue_pairs * 2;
286 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ))
293 virtio_init_vring(struct virtqueue *vq)
295 int size = vq->vq_nentries;
296 struct vring *vr = &vq->vq_ring;
297 uint8_t *ring_mem = vq->vq_ring_virt_mem;
299 PMD_INIT_FUNC_TRACE();
302 * Reinitialise since virtio port might have been stopped and restarted
304 memset(ring_mem, 0, vq->vq_ring_size);
305 vring_init(vr, size, ring_mem, VIRTIO_PCI_VRING_ALIGN);
306 vq->vq_used_cons_idx = 0;
307 vq->vq_desc_head_idx = 0;
308 vq->vq_avail_idx = 0;
309 vq->vq_desc_tail_idx = (uint16_t)(vq->vq_nentries - 1);
310 vq->vq_free_cnt = vq->vq_nentries;
311 memset(vq->vq_descx, 0, sizeof(struct vq_desc_extra) * vq->vq_nentries);
313 vring_desc_init(vr->desc, size);
316 * Disable device(host) interrupting guest
318 virtqueue_disable_intr(vq);
322 virtio_init_queue(struct rte_eth_dev *dev, uint16_t vtpci_queue_idx)
324 char vq_name[VIRTQUEUE_MAX_NAME_SZ];
325 char vq_hdr_name[VIRTQUEUE_MAX_NAME_SZ];
326 const struct rte_memzone *mz = NULL, *hdr_mz = NULL;
327 unsigned int vq_size, size;
328 struct virtio_hw *hw = dev->data->dev_private;
329 struct virtnet_rx *rxvq = NULL;
330 struct virtnet_tx *txvq = NULL;
331 struct virtnet_ctl *cvq = NULL;
332 struct virtqueue *vq;
333 size_t sz_hdr_mz = 0;
334 void *sw_ring = NULL;
335 int queue_type = virtio_get_queue_type(hw, vtpci_queue_idx);
338 PMD_INIT_LOG(DEBUG, "setting up queue: %u", vtpci_queue_idx);
341 * Read the virtqueue size from the Queue Size field
342 * Always power of 2 and if 0 virtqueue does not exist
344 vq_size = VTPCI_OPS(hw)->get_queue_num(hw, vtpci_queue_idx);
345 PMD_INIT_LOG(DEBUG, "vq_size: %u", vq_size);
347 PMD_INIT_LOG(ERR, "virtqueue does not exist");
351 if (!rte_is_power_of_2(vq_size)) {
352 PMD_INIT_LOG(ERR, "virtqueue size is not powerof 2");
356 snprintf(vq_name, sizeof(vq_name), "port%d_vq%d",
357 dev->data->port_id, vtpci_queue_idx);
359 size = RTE_ALIGN_CEIL(sizeof(*vq) +
360 vq_size * sizeof(struct vq_desc_extra),
361 RTE_CACHE_LINE_SIZE);
362 if (queue_type == VTNET_TQ) {
364 * For each xmit packet, allocate a virtio_net_hdr
365 * and indirect ring elements
367 sz_hdr_mz = vq_size * sizeof(struct virtio_tx_region);
368 } else if (queue_type == VTNET_CQ) {
369 /* Allocate a page for control vq command, data and status */
370 sz_hdr_mz = PAGE_SIZE;
373 vq = rte_zmalloc_socket(vq_name, size, RTE_CACHE_LINE_SIZE,
376 PMD_INIT_LOG(ERR, "can not allocate vq");
379 hw->vqs[vtpci_queue_idx] = vq;
382 vq->vq_queue_index = vtpci_queue_idx;
383 vq->vq_nentries = vq_size;
386 * Reserve a memzone for vring elements
388 size = vring_size(vq_size, VIRTIO_PCI_VRING_ALIGN);
389 vq->vq_ring_size = RTE_ALIGN_CEIL(size, VIRTIO_PCI_VRING_ALIGN);
390 PMD_INIT_LOG(DEBUG, "vring_size: %d, rounded_vring_size: %d",
391 size, vq->vq_ring_size);
393 mz = rte_memzone_reserve_aligned(vq_name, vq->vq_ring_size,
394 SOCKET_ID_ANY, RTE_MEMZONE_IOVA_CONTIG,
395 VIRTIO_PCI_VRING_ALIGN);
397 if (rte_errno == EEXIST)
398 mz = rte_memzone_lookup(vq_name);
405 memset(mz->addr, 0, mz->len);
407 vq->vq_ring_mem = mz->iova;
408 vq->vq_ring_virt_mem = mz->addr;
409 PMD_INIT_LOG(DEBUG, "vq->vq_ring_mem: 0x%" PRIx64,
411 PMD_INIT_LOG(DEBUG, "vq->vq_ring_virt_mem: 0x%" PRIx64,
412 (uint64_t)(uintptr_t)mz->addr);
414 virtio_init_vring(vq);
417 snprintf(vq_hdr_name, sizeof(vq_hdr_name), "port%d_vq%d_hdr",
418 dev->data->port_id, vtpci_queue_idx);
419 hdr_mz = rte_memzone_reserve_aligned(vq_hdr_name, sz_hdr_mz,
420 SOCKET_ID_ANY, RTE_MEMZONE_IOVA_CONTIG,
421 RTE_CACHE_LINE_SIZE);
422 if (hdr_mz == NULL) {
423 if (rte_errno == EEXIST)
424 hdr_mz = rte_memzone_lookup(vq_hdr_name);
425 if (hdr_mz == NULL) {
432 if (queue_type == VTNET_RQ) {
433 size_t sz_sw = (RTE_PMD_VIRTIO_RX_MAX_BURST + vq_size) *
434 sizeof(vq->sw_ring[0]);
436 sw_ring = rte_zmalloc_socket("sw_ring", sz_sw,
437 RTE_CACHE_LINE_SIZE, SOCKET_ID_ANY);
439 PMD_INIT_LOG(ERR, "can not allocate RX soft ring");
444 vq->sw_ring = sw_ring;
447 rxvq->port_id = dev->data->port_id;
449 } else if (queue_type == VTNET_TQ) {
452 txvq->port_id = dev->data->port_id;
454 txvq->virtio_net_hdr_mz = hdr_mz;
455 txvq->virtio_net_hdr_mem = hdr_mz->iova;
456 } else if (queue_type == VTNET_CQ) {
460 cvq->virtio_net_hdr_mz = hdr_mz;
461 cvq->virtio_net_hdr_mem = hdr_mz->iova;
462 memset(cvq->virtio_net_hdr_mz->addr, 0, PAGE_SIZE);
467 /* For virtio_user case (that is when hw->dev is NULL), we use
468 * virtual address. And we need properly set _offset_, please see
469 * VIRTIO_MBUF_DATA_DMA_ADDR in virtqueue.h for more information.
471 if (!hw->virtio_user_dev)
472 vq->offset = offsetof(struct rte_mbuf, buf_iova);
474 vq->vq_ring_mem = (uintptr_t)mz->addr;
475 vq->offset = offsetof(struct rte_mbuf, buf_addr);
476 if (queue_type == VTNET_TQ)
477 txvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr;
478 else if (queue_type == VTNET_CQ)
479 cvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr;
482 if (queue_type == VTNET_TQ) {
483 struct virtio_tx_region *txr;
487 memset(txr, 0, vq_size * sizeof(*txr));
488 for (i = 0; i < vq_size; i++) {
489 struct vring_desc *start_dp = txr[i].tx_indir;
491 vring_desc_init(start_dp, RTE_DIM(txr[i].tx_indir));
493 /* first indirect descriptor is always the tx header */
494 start_dp->addr = txvq->virtio_net_hdr_mem
496 + offsetof(struct virtio_tx_region, tx_hdr);
498 start_dp->len = hw->vtnet_hdr_size;
499 start_dp->flags = VRING_DESC_F_NEXT;
503 if (VTPCI_OPS(hw)->setup_queue(hw, vq) < 0) {
504 PMD_INIT_LOG(ERR, "setup_queue failed");
512 rte_memzone_free(hdr_mz);
513 rte_memzone_free(mz);
520 virtio_free_queues(struct virtio_hw *hw)
522 uint16_t nr_vq = virtio_get_nr_vq(hw);
523 struct virtqueue *vq;
530 for (i = 0; i < nr_vq; i++) {
535 queue_type = virtio_get_queue_type(hw, i);
536 if (queue_type == VTNET_RQ) {
537 rte_free(vq->sw_ring);
538 rte_memzone_free(vq->rxq.mz);
539 } else if (queue_type == VTNET_TQ) {
540 rte_memzone_free(vq->txq.mz);
541 rte_memzone_free(vq->txq.virtio_net_hdr_mz);
543 rte_memzone_free(vq->cq.mz);
544 rte_memzone_free(vq->cq.virtio_net_hdr_mz);
556 virtio_alloc_queues(struct rte_eth_dev *dev)
558 struct virtio_hw *hw = dev->data->dev_private;
559 uint16_t nr_vq = virtio_get_nr_vq(hw);
563 hw->vqs = rte_zmalloc(NULL, sizeof(struct virtqueue *) * nr_vq, 0);
565 PMD_INIT_LOG(ERR, "failed to allocate vqs");
569 for (i = 0; i < nr_vq; i++) {
570 ret = virtio_init_queue(dev, i);
572 virtio_free_queues(hw);
580 static void virtio_queues_unbind_intr(struct rte_eth_dev *dev);
583 virtio_dev_close(struct rte_eth_dev *dev)
585 struct virtio_hw *hw = dev->data->dev_private;
586 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf;
588 PMD_INIT_LOG(DEBUG, "virtio_dev_close");
595 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
596 VTPCI_OPS(hw)->set_config_irq(hw, VIRTIO_MSI_NO_VECTOR);
598 virtio_queues_unbind_intr(dev);
600 if (intr_conf->lsc || intr_conf->rxq) {
601 virtio_intr_disable(dev);
602 rte_intr_efd_disable(dev->intr_handle);
603 rte_free(dev->intr_handle->intr_vec);
604 dev->intr_handle->intr_vec = NULL;
608 virtio_dev_free_mbufs(dev);
609 virtio_free_queues(hw);
613 virtio_dev_promiscuous_enable(struct rte_eth_dev *dev)
615 struct virtio_hw *hw = dev->data->dev_private;
616 struct virtio_pmd_ctrl ctrl;
620 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
621 PMD_INIT_LOG(INFO, "host does not support rx control");
625 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
626 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
630 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
632 PMD_INIT_LOG(ERR, "Failed to enable promisc");
636 virtio_dev_promiscuous_disable(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 disable promisc");
659 virtio_dev_allmulticast_enable(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_ALLMULTI;
676 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
678 PMD_INIT_LOG(ERR, "Failed to enable allmulticast");
682 virtio_dev_allmulticast_disable(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 disable allmulticast");
704 #define VLAN_TAG_LEN 4 /* 802.3ac tag (not DMA'd) */
706 virtio_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
708 struct virtio_hw *hw = dev->data->dev_private;
709 uint32_t ether_hdr_len = ETHER_HDR_LEN + VLAN_TAG_LEN +
711 uint32_t frame_size = mtu + ether_hdr_len;
712 uint32_t max_frame_size = hw->max_mtu + ether_hdr_len;
714 max_frame_size = RTE_MIN(max_frame_size, VIRTIO_MAX_RX_PKTLEN);
716 if (mtu < ETHER_MIN_MTU || frame_size > max_frame_size) {
717 PMD_INIT_LOG(ERR, "MTU should be between %d and %d",
718 ETHER_MIN_MTU, max_frame_size - ether_hdr_len);
725 virtio_dev_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id)
727 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id];
728 struct virtqueue *vq = rxvq->vq;
730 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 * dev_ops for virtio-user in secondary processes, as we just have
783 * some limited supports currently.
785 const struct eth_dev_ops virtio_user_secondary_eth_dev_ops = {
786 .dev_infos_get = virtio_dev_info_get,
787 .stats_get = virtio_dev_stats_get,
788 .xstats_get = virtio_dev_xstats_get,
789 .xstats_get_names = virtio_dev_xstats_get_names,
790 .stats_reset = virtio_dev_stats_reset,
791 .xstats_reset = virtio_dev_stats_reset,
792 /* collect stats per queue */
793 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set,
797 virtio_update_stats(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
801 for (i = 0; i < dev->data->nb_tx_queues; i++) {
802 const struct virtnet_tx *txvq = dev->data->tx_queues[i];
806 stats->opackets += txvq->stats.packets;
807 stats->obytes += txvq->stats.bytes;
808 stats->oerrors += txvq->stats.errors;
810 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
811 stats->q_opackets[i] = txvq->stats.packets;
812 stats->q_obytes[i] = txvq->stats.bytes;
816 for (i = 0; i < dev->data->nb_rx_queues; i++) {
817 const struct virtnet_rx *rxvq = dev->data->rx_queues[i];
821 stats->ipackets += rxvq->stats.packets;
822 stats->ibytes += rxvq->stats.bytes;
823 stats->ierrors += rxvq->stats.errors;
825 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
826 stats->q_ipackets[i] = rxvq->stats.packets;
827 stats->q_ibytes[i] = rxvq->stats.bytes;
831 stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed;
834 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev,
835 struct rte_eth_xstat_name *xstats_names,
836 __rte_unused unsigned limit)
842 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS +
843 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS;
845 if (xstats_names != NULL) {
846 /* Note: limit checked in rte_eth_xstats_names() */
848 for (i = 0; i < dev->data->nb_rx_queues; i++) {
849 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
852 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) {
853 snprintf(xstats_names[count].name,
854 sizeof(xstats_names[count].name),
856 rte_virtio_rxq_stat_strings[t].name);
861 for (i = 0; i < dev->data->nb_tx_queues; i++) {
862 struct virtnet_tx *txvq = dev->data->tx_queues[i];
865 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) {
866 snprintf(xstats_names[count].name,
867 sizeof(xstats_names[count].name),
869 rte_virtio_txq_stat_strings[t].name);
879 virtio_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats,
885 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS +
886 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS;
891 for (i = 0; i < dev->data->nb_rx_queues; i++) {
892 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
899 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) {
900 xstats[count].value = *(uint64_t *)(((char *)rxvq) +
901 rte_virtio_rxq_stat_strings[t].offset);
902 xstats[count].id = count;
907 for (i = 0; i < dev->data->nb_tx_queues; i++) {
908 struct virtnet_tx *txvq = dev->data->tx_queues[i];
915 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) {
916 xstats[count].value = *(uint64_t *)(((char *)txvq) +
917 rte_virtio_txq_stat_strings[t].offset);
918 xstats[count].id = count;
927 virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
929 virtio_update_stats(dev, stats);
935 virtio_dev_stats_reset(struct rte_eth_dev *dev)
939 for (i = 0; i < dev->data->nb_tx_queues; i++) {
940 struct virtnet_tx *txvq = dev->data->tx_queues[i];
944 txvq->stats.packets = 0;
945 txvq->stats.bytes = 0;
946 txvq->stats.errors = 0;
947 txvq->stats.multicast = 0;
948 txvq->stats.broadcast = 0;
949 memset(txvq->stats.size_bins, 0,
950 sizeof(txvq->stats.size_bins[0]) * 8);
953 for (i = 0; i < dev->data->nb_rx_queues; i++) {
954 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
958 rxvq->stats.packets = 0;
959 rxvq->stats.bytes = 0;
960 rxvq->stats.errors = 0;
961 rxvq->stats.multicast = 0;
962 rxvq->stats.broadcast = 0;
963 memset(rxvq->stats.size_bins, 0,
964 sizeof(rxvq->stats.size_bins[0]) * 8);
969 virtio_set_hwaddr(struct virtio_hw *hw)
971 vtpci_write_dev_config(hw,
972 offsetof(struct virtio_net_config, mac),
973 &hw->mac_addr, ETHER_ADDR_LEN);
977 virtio_get_hwaddr(struct virtio_hw *hw)
979 if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) {
980 vtpci_read_dev_config(hw,
981 offsetof(struct virtio_net_config, mac),
982 &hw->mac_addr, ETHER_ADDR_LEN);
984 eth_random_addr(&hw->mac_addr[0]);
985 virtio_set_hwaddr(hw);
990 virtio_mac_table_set(struct virtio_hw *hw,
991 const struct virtio_net_ctrl_mac *uc,
992 const struct virtio_net_ctrl_mac *mc)
994 struct virtio_pmd_ctrl ctrl;
997 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
998 PMD_DRV_LOG(INFO, "host does not support mac table");
1002 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
1003 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET;
1005 len[0] = uc->entries * ETHER_ADDR_LEN + sizeof(uc->entries);
1006 memcpy(ctrl.data, uc, len[0]);
1008 len[1] = mc->entries * ETHER_ADDR_LEN + sizeof(mc->entries);
1009 memcpy(ctrl.data + len[0], mc, len[1]);
1011 err = virtio_send_command(hw->cvq, &ctrl, len, 2);
1013 PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err);
1018 virtio_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac_addr,
1019 uint32_t index, uint32_t vmdq __rte_unused)
1021 struct virtio_hw *hw = dev->data->dev_private;
1022 const struct ether_addr *addrs = dev->data->mac_addrs;
1024 struct virtio_net_ctrl_mac *uc, *mc;
1026 if (index >= VIRTIO_MAX_MAC_ADDRS) {
1027 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
1031 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
1033 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
1036 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
1037 const struct ether_addr *addr
1038 = (i == index) ? mac_addr : addrs + i;
1039 struct virtio_net_ctrl_mac *tbl
1040 = is_multicast_ether_addr(addr) ? mc : uc;
1042 memcpy(&tbl->macs[tbl->entries++], addr, ETHER_ADDR_LEN);
1045 return virtio_mac_table_set(hw, uc, mc);
1049 virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
1051 struct virtio_hw *hw = dev->data->dev_private;
1052 struct ether_addr *addrs = dev->data->mac_addrs;
1053 struct virtio_net_ctrl_mac *uc, *mc;
1056 if (index >= VIRTIO_MAX_MAC_ADDRS) {
1057 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
1061 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
1063 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
1066 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
1067 struct virtio_net_ctrl_mac *tbl;
1069 if (i == index || is_zero_ether_addr(addrs + i))
1072 tbl = is_multicast_ether_addr(addrs + i) ? mc : uc;
1073 memcpy(&tbl->macs[tbl->entries++], addrs + i, ETHER_ADDR_LEN);
1076 virtio_mac_table_set(hw, uc, mc);
1080 virtio_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr)
1082 struct virtio_hw *hw = dev->data->dev_private;
1084 memcpy(hw->mac_addr, mac_addr, ETHER_ADDR_LEN);
1086 /* Use atomic update if available */
1087 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
1088 struct virtio_pmd_ctrl ctrl;
1089 int len = ETHER_ADDR_LEN;
1091 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
1092 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET;
1094 memcpy(ctrl.data, mac_addr, ETHER_ADDR_LEN);
1095 return virtio_send_command(hw->cvq, &ctrl, &len, 1);
1098 if (!vtpci_with_feature(hw, VIRTIO_NET_F_MAC))
1101 virtio_set_hwaddr(hw);
1106 virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
1108 struct virtio_hw *hw = dev->data->dev_private;
1109 struct virtio_pmd_ctrl ctrl;
1112 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN))
1115 ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN;
1116 ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL;
1117 memcpy(ctrl.data, &vlan_id, sizeof(vlan_id));
1118 len = sizeof(vlan_id);
1120 return virtio_send_command(hw->cvq, &ctrl, &len, 1);
1124 virtio_intr_enable(struct rte_eth_dev *dev)
1126 struct virtio_hw *hw = dev->data->dev_private;
1128 if (rte_intr_enable(dev->intr_handle) < 0)
1131 if (!hw->virtio_user_dev)
1132 hw->use_msix = vtpci_msix_detect(RTE_ETH_DEV_TO_PCI(dev));
1138 virtio_intr_disable(struct rte_eth_dev *dev)
1140 struct virtio_hw *hw = dev->data->dev_private;
1142 if (rte_intr_disable(dev->intr_handle) < 0)
1145 if (!hw->virtio_user_dev)
1146 hw->use_msix = vtpci_msix_detect(RTE_ETH_DEV_TO_PCI(dev));
1152 virtio_negotiate_features(struct virtio_hw *hw, uint64_t req_features)
1154 uint64_t host_features;
1156 /* Prepare guest_features: feature that driver wants to support */
1157 PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %" PRIx64,
1160 /* Read device(host) feature bits */
1161 host_features = VTPCI_OPS(hw)->get_features(hw);
1162 PMD_INIT_LOG(DEBUG, "host_features before negotiate = %" PRIx64,
1165 /* If supported, ensure MTU value is valid before acknowledging it. */
1166 if (host_features & req_features & (1ULL << VIRTIO_NET_F_MTU)) {
1167 struct virtio_net_config config;
1169 vtpci_read_dev_config(hw,
1170 offsetof(struct virtio_net_config, mtu),
1171 &config.mtu, sizeof(config.mtu));
1173 if (config.mtu < ETHER_MIN_MTU)
1174 req_features &= ~(1ULL << VIRTIO_NET_F_MTU);
1178 * Negotiate features: Subset of device feature bits are written back
1179 * guest feature bits.
1181 hw->guest_features = req_features;
1182 hw->guest_features = vtpci_negotiate_features(hw, host_features);
1183 PMD_INIT_LOG(DEBUG, "features after negotiate = %" PRIx64,
1184 hw->guest_features);
1187 if (!vtpci_with_feature(hw, VIRTIO_F_VERSION_1)) {
1189 "VIRTIO_F_VERSION_1 features is not enabled.");
1192 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_FEATURES_OK);
1193 if (!(vtpci_get_status(hw) & VIRTIO_CONFIG_STATUS_FEATURES_OK)) {
1195 "failed to set FEATURES_OK status!");
1200 hw->req_guest_features = req_features;
1206 virtio_dev_pause(struct rte_eth_dev *dev)
1208 struct virtio_hw *hw = dev->data->dev_private;
1210 rte_spinlock_lock(&hw->state_lock);
1212 if (hw->started == 0) {
1213 /* Device is just stopped. */
1214 rte_spinlock_unlock(&hw->state_lock);
1219 * Prevent the worker threads from touching queues to avoid contention,
1220 * 1 ms should be enough for the ongoing Tx function to finish.
1227 * Recover hw state to let the worker threads continue.
1230 virtio_dev_resume(struct rte_eth_dev *dev)
1232 struct virtio_hw *hw = dev->data->dev_private;
1235 rte_spinlock_unlock(&hw->state_lock);
1239 * Should be called only after device is paused.
1242 virtio_inject_pkts(struct rte_eth_dev *dev, struct rte_mbuf **tx_pkts,
1245 struct virtio_hw *hw = dev->data->dev_private;
1246 struct virtnet_tx *txvq = dev->data->tx_queues[0];
1249 hw->inject_pkts = tx_pkts;
1250 ret = dev->tx_pkt_burst(txvq, tx_pkts, nb_pkts);
1251 hw->inject_pkts = NULL;
1257 virtio_notify_peers(struct rte_eth_dev *dev)
1259 struct virtio_hw *hw = dev->data->dev_private;
1260 struct virtnet_rx *rxvq;
1261 struct rte_mbuf *rarp_mbuf;
1263 if (!dev->data->rx_queues)
1266 rxvq = dev->data->rx_queues[0];
1270 rarp_mbuf = rte_net_make_rarp_packet(rxvq->mpool,
1271 (struct ether_addr *)hw->mac_addr);
1272 if (rarp_mbuf == NULL) {
1273 PMD_DRV_LOG(ERR, "failed to make RARP packet.");
1277 /* If virtio port just stopped, no need to send RARP */
1278 if (virtio_dev_pause(dev) < 0) {
1279 rte_pktmbuf_free(rarp_mbuf);
1283 virtio_inject_pkts(dev, &rarp_mbuf, 1);
1284 virtio_dev_resume(dev);
1288 virtio_ack_link_announce(struct rte_eth_dev *dev)
1290 struct virtio_hw *hw = dev->data->dev_private;
1291 struct virtio_pmd_ctrl ctrl;
1293 ctrl.hdr.class = VIRTIO_NET_CTRL_ANNOUNCE;
1294 ctrl.hdr.cmd = VIRTIO_NET_CTRL_ANNOUNCE_ACK;
1296 virtio_send_command(hw->cvq, &ctrl, NULL, 0);
1300 * Process virtio config changed interrupt. Call the callback
1301 * if link state changed, generate gratuitous RARP packet if
1302 * the status indicates an ANNOUNCE.
1305 virtio_interrupt_handler(void *param)
1307 struct rte_eth_dev *dev = param;
1308 struct virtio_hw *hw = dev->data->dev_private;
1312 /* Read interrupt status which clears interrupt */
1313 isr = vtpci_isr(hw);
1314 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr);
1316 if (virtio_intr_enable(dev) < 0)
1317 PMD_DRV_LOG(ERR, "interrupt enable failed");
1319 if (isr & VIRTIO_PCI_ISR_CONFIG) {
1320 if (virtio_dev_link_update(dev, 0) == 0)
1321 _rte_eth_dev_callback_process(dev,
1322 RTE_ETH_EVENT_INTR_LSC,
1325 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1326 vtpci_read_dev_config(hw,
1327 offsetof(struct virtio_net_config, status),
1328 &status, sizeof(status));
1329 if (status & VIRTIO_NET_S_ANNOUNCE) {
1330 virtio_notify_peers(dev);
1332 virtio_ack_link_announce(dev);
1338 /* set rx and tx handlers according to what is supported */
1340 set_rxtx_funcs(struct rte_eth_dev *eth_dev)
1342 struct virtio_hw *hw = eth_dev->data->dev_private;
1344 if (hw->use_simple_rx) {
1345 PMD_INIT_LOG(INFO, "virtio: using simple Rx path on port %u",
1346 eth_dev->data->port_id);
1347 eth_dev->rx_pkt_burst = virtio_recv_pkts_vec;
1348 } else if (hw->use_inorder_rx) {
1350 "virtio: using inorder mergeable buffer Rx path on port %u",
1351 eth_dev->data->port_id);
1352 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts_inorder;
1353 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
1355 "virtio: using mergeable buffer Rx path on port %u",
1356 eth_dev->data->port_id);
1357 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts;
1359 PMD_INIT_LOG(INFO, "virtio: using standard Rx path on port %u",
1360 eth_dev->data->port_id);
1361 eth_dev->rx_pkt_burst = &virtio_recv_pkts;
1364 if (hw->use_inorder_tx) {
1365 PMD_INIT_LOG(INFO, "virtio: using inorder Tx path on port %u",
1366 eth_dev->data->port_id);
1367 eth_dev->tx_pkt_burst = virtio_xmit_pkts_inorder;
1369 PMD_INIT_LOG(INFO, "virtio: using standard Tx path on port %u",
1370 eth_dev->data->port_id);
1371 eth_dev->tx_pkt_burst = virtio_xmit_pkts;
1375 /* Only support 1:1 queue/interrupt mapping so far.
1376 * TODO: support n:1 queue/interrupt mapping when there are limited number of
1377 * interrupt vectors (<N+1).
1380 virtio_queues_bind_intr(struct rte_eth_dev *dev)
1383 struct virtio_hw *hw = dev->data->dev_private;
1385 PMD_INIT_LOG(INFO, "queue/interrupt binding");
1386 for (i = 0; i < dev->data->nb_rx_queues; ++i) {
1387 dev->intr_handle->intr_vec[i] = i + 1;
1388 if (VTPCI_OPS(hw)->set_queue_irq(hw, hw->vqs[i * 2], i + 1) ==
1389 VIRTIO_MSI_NO_VECTOR) {
1390 PMD_DRV_LOG(ERR, "failed to set queue vector");
1399 virtio_queues_unbind_intr(struct rte_eth_dev *dev)
1402 struct virtio_hw *hw = dev->data->dev_private;
1404 PMD_INIT_LOG(INFO, "queue/interrupt unbinding");
1405 for (i = 0; i < dev->data->nb_rx_queues; ++i)
1406 VTPCI_OPS(hw)->set_queue_irq(hw,
1407 hw->vqs[i * VTNET_CQ],
1408 VIRTIO_MSI_NO_VECTOR);
1412 virtio_configure_intr(struct rte_eth_dev *dev)
1414 struct virtio_hw *hw = dev->data->dev_private;
1416 if (!rte_intr_cap_multiple(dev->intr_handle)) {
1417 PMD_INIT_LOG(ERR, "Multiple intr vector not supported");
1421 if (rte_intr_efd_enable(dev->intr_handle, dev->data->nb_rx_queues)) {
1422 PMD_INIT_LOG(ERR, "Fail to create eventfd");
1426 if (!dev->intr_handle->intr_vec) {
1427 dev->intr_handle->intr_vec =
1428 rte_zmalloc("intr_vec",
1429 hw->max_queue_pairs * sizeof(int), 0);
1430 if (!dev->intr_handle->intr_vec) {
1431 PMD_INIT_LOG(ERR, "Failed to allocate %u rxq vectors",
1432 hw->max_queue_pairs);
1437 /* Re-register callback to update max_intr */
1438 rte_intr_callback_unregister(dev->intr_handle,
1439 virtio_interrupt_handler,
1441 rte_intr_callback_register(dev->intr_handle,
1442 virtio_interrupt_handler,
1445 /* DO NOT try to remove this! This function will enable msix, or QEMU
1446 * will encounter SIGSEGV when DRIVER_OK is sent.
1447 * And for legacy devices, this should be done before queue/vec binding
1448 * to change the config size from 20 to 24, or VIRTIO_MSI_QUEUE_VECTOR
1449 * (22) will be ignored.
1451 if (virtio_intr_enable(dev) < 0) {
1452 PMD_DRV_LOG(ERR, "interrupt enable failed");
1456 if (virtio_queues_bind_intr(dev) < 0) {
1457 PMD_INIT_LOG(ERR, "Failed to bind queue/interrupt");
1464 /* reset device and renegotiate features if needed */
1466 virtio_init_device(struct rte_eth_dev *eth_dev, uint64_t req_features)
1468 struct virtio_hw *hw = eth_dev->data->dev_private;
1469 struct virtio_net_config *config;
1470 struct virtio_net_config local_config;
1471 struct rte_pci_device *pci_dev = NULL;
1474 /* Reset the device although not necessary at startup */
1478 virtio_dev_free_mbufs(eth_dev);
1479 virtio_free_queues(hw);
1482 /* Tell the host we've noticed this device. */
1483 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_ACK);
1485 /* Tell the host we've known how to drive the device. */
1486 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER);
1487 if (virtio_negotiate_features(hw, req_features) < 0)
1490 if (!hw->virtio_user_dev) {
1491 pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
1492 rte_eth_copy_pci_info(eth_dev, pci_dev);
1495 /* If host does not support both status and MSI-X then disable LSC */
1496 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS) &&
1497 hw->use_msix != VIRTIO_MSIX_NONE)
1498 eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC;
1500 eth_dev->data->dev_flags &= ~RTE_ETH_DEV_INTR_LSC;
1502 /* Setting up rx_header size for the device */
1503 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF) ||
1504 vtpci_with_feature(hw, VIRTIO_F_VERSION_1))
1505 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf);
1507 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr);
1509 /* Copy the permanent MAC address to: virtio_hw */
1510 virtio_get_hwaddr(hw);
1511 ether_addr_copy((struct ether_addr *) hw->mac_addr,
1512 ð_dev->data->mac_addrs[0]);
1514 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1515 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2],
1516 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]);
1518 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) {
1519 config = &local_config;
1521 vtpci_read_dev_config(hw,
1522 offsetof(struct virtio_net_config, mac),
1523 &config->mac, sizeof(config->mac));
1525 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1526 vtpci_read_dev_config(hw,
1527 offsetof(struct virtio_net_config, status),
1528 &config->status, sizeof(config->status));
1531 "VIRTIO_NET_F_STATUS is not supported");
1535 if (vtpci_with_feature(hw, VIRTIO_NET_F_MQ)) {
1536 vtpci_read_dev_config(hw,
1537 offsetof(struct virtio_net_config, max_virtqueue_pairs),
1538 &config->max_virtqueue_pairs,
1539 sizeof(config->max_virtqueue_pairs));
1542 "VIRTIO_NET_F_MQ is not supported");
1543 config->max_virtqueue_pairs = 1;
1546 hw->max_queue_pairs = config->max_virtqueue_pairs;
1548 if (vtpci_with_feature(hw, VIRTIO_NET_F_MTU)) {
1549 vtpci_read_dev_config(hw,
1550 offsetof(struct virtio_net_config, mtu),
1552 sizeof(config->mtu));
1555 * MTU value has already been checked at negotiation
1556 * time, but check again in case it has changed since
1557 * then, which should not happen.
1559 if (config->mtu < ETHER_MIN_MTU) {
1560 PMD_INIT_LOG(ERR, "invalid max MTU value (%u)",
1565 hw->max_mtu = config->mtu;
1566 /* Set initial MTU to maximum one supported by vhost */
1567 eth_dev->data->mtu = config->mtu;
1570 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - ETHER_HDR_LEN -
1571 VLAN_TAG_LEN - hw->vtnet_hdr_size;
1574 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d",
1575 config->max_virtqueue_pairs);
1576 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status);
1578 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1579 config->mac[0], config->mac[1],
1580 config->mac[2], config->mac[3],
1581 config->mac[4], config->mac[5]);
1583 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=1");
1584 hw->max_queue_pairs = 1;
1585 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - ETHER_HDR_LEN -
1586 VLAN_TAG_LEN - hw->vtnet_hdr_size;
1589 ret = virtio_alloc_queues(eth_dev);
1593 if (eth_dev->data->dev_conf.intr_conf.rxq) {
1594 if (virtio_configure_intr(eth_dev) < 0) {
1595 PMD_INIT_LOG(ERR, "failed to configure interrupt");
1600 vtpci_reinit_complete(hw);
1603 PMD_INIT_LOG(DEBUG, "port %d vendorID=0x%x deviceID=0x%x",
1604 eth_dev->data->port_id, pci_dev->id.vendor_id,
1605 pci_dev->id.device_id);
1611 * Remap the PCI device again (IO port map for legacy device and
1612 * memory map for modern device), so that the secondary process
1613 * could have the PCI initiated correctly.
1616 virtio_remap_pci(struct rte_pci_device *pci_dev, struct virtio_hw *hw)
1620 * We don't have to re-parse the PCI config space, since
1621 * rte_pci_map_device() makes sure the mapped address
1622 * in secondary process would equal to the one mapped in
1623 * the primary process: error will be returned if that
1624 * requirement is not met.
1626 * That said, we could simply reuse all cap pointers
1627 * (such as dev_cfg, common_cfg, etc.) parsed from the
1628 * primary process, which is stored in shared memory.
1630 if (rte_pci_map_device(pci_dev)) {
1631 PMD_INIT_LOG(DEBUG, "failed to map pci device!");
1635 if (rte_pci_ioport_map(pci_dev, 0, VTPCI_IO(hw)) < 0)
1643 virtio_set_vtpci_ops(struct virtio_hw *hw)
1645 #ifdef RTE_VIRTIO_USER
1646 if (hw->virtio_user_dev)
1647 VTPCI_OPS(hw) = &virtio_user_ops;
1651 VTPCI_OPS(hw) = &modern_ops;
1653 VTPCI_OPS(hw) = &legacy_ops;
1657 * This function is based on probe() function in virtio_pci.c
1658 * It returns 0 on success.
1661 eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
1663 struct virtio_hw *hw = eth_dev->data->dev_private;
1666 RTE_BUILD_BUG_ON(RTE_PKTMBUF_HEADROOM < sizeof(struct virtio_net_hdr_mrg_rxbuf));
1668 eth_dev->dev_ops = &virtio_eth_dev_ops;
1670 if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
1671 if (!hw->virtio_user_dev) {
1672 ret = virtio_remap_pci(RTE_ETH_DEV_TO_PCI(eth_dev), hw);
1677 virtio_set_vtpci_ops(hw);
1678 set_rxtx_funcs(eth_dev);
1683 /* Allocate memory for storing MAC addresses */
1684 eth_dev->data->mac_addrs = rte_zmalloc("virtio", VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN, 0);
1685 if (eth_dev->data->mac_addrs == NULL) {
1687 "Failed to allocate %d bytes needed to store MAC addresses",
1688 VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN);
1692 hw->port_id = eth_dev->data->port_id;
1693 /* For virtio_user case the hw->virtio_user_dev is populated by
1694 * virtio_user_eth_dev_alloc() before eth_virtio_dev_init() is called.
1696 if (!hw->virtio_user_dev) {
1697 ret = vtpci_init(RTE_ETH_DEV_TO_PCI(eth_dev), hw);
1702 /* reset device and negotiate default features */
1703 ret = virtio_init_device(eth_dev, VIRTIO_PMD_DEFAULT_GUEST_FEATURES);
1710 rte_free(eth_dev->data->mac_addrs);
1711 eth_dev->data->mac_addrs = NULL;
1716 eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev)
1718 PMD_INIT_FUNC_TRACE();
1720 if (rte_eal_process_type() == RTE_PROC_SECONDARY)
1723 virtio_dev_stop(eth_dev);
1724 virtio_dev_close(eth_dev);
1726 eth_dev->dev_ops = NULL;
1727 eth_dev->tx_pkt_burst = NULL;
1728 eth_dev->rx_pkt_burst = NULL;
1730 if (eth_dev->device)
1731 rte_pci_unmap_device(RTE_ETH_DEV_TO_PCI(eth_dev));
1733 PMD_INIT_LOG(DEBUG, "dev_uninit completed");
1738 static int vdpa_check_handler(__rte_unused const char *key,
1739 const char *value, __rte_unused void *opaque)
1741 if (strcmp(value, "1"))
1748 vdpa_mode_selected(struct rte_devargs *devargs)
1750 struct rte_kvargs *kvlist;
1751 const char *key = "vdpa";
1754 if (devargs == NULL)
1757 kvlist = rte_kvargs_parse(devargs->args, NULL);
1761 if (!rte_kvargs_count(kvlist, key))
1764 /* vdpa mode selected when there's a key-value pair: vdpa=1 */
1765 if (rte_kvargs_process(kvlist, key,
1766 vdpa_check_handler, NULL) < 0) {
1772 rte_kvargs_free(kvlist);
1776 static int eth_virtio_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
1777 struct rte_pci_device *pci_dev)
1779 if (rte_eal_iopl_init() != 0) {
1780 PMD_INIT_LOG(ERR, "IOPL call failed - cannot use virtio PMD");
1784 /* virtio pmd skips probe if device needs to work in vdpa mode */
1785 if (vdpa_mode_selected(pci_dev->device.devargs))
1788 return rte_eth_dev_pci_generic_probe(pci_dev, sizeof(struct virtio_hw),
1789 eth_virtio_dev_init);
1792 static int eth_virtio_pci_remove(struct rte_pci_device *pci_dev)
1794 return rte_eth_dev_pci_generic_remove(pci_dev, eth_virtio_dev_uninit);
1797 static struct rte_pci_driver rte_virtio_pmd = {
1799 .name = "net_virtio",
1801 .id_table = pci_id_virtio_map,
1803 .probe = eth_virtio_pci_probe,
1804 .remove = eth_virtio_pci_remove,
1807 RTE_INIT(rte_virtio_pmd_init)
1809 rte_eal_iopl_init();
1810 rte_pci_register(&rte_virtio_pmd);
1814 rx_offload_enabled(struct virtio_hw *hw)
1816 return vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM) ||
1817 vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) ||
1818 vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6);
1822 tx_offload_enabled(struct virtio_hw *hw)
1824 return vtpci_with_feature(hw, VIRTIO_NET_F_CSUM) ||
1825 vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO4) ||
1826 vtpci_with_feature(hw, VIRTIO_NET_F_HOST_TSO6);
1830 * Configure virtio device
1831 * It returns 0 on success.
1834 virtio_dev_configure(struct rte_eth_dev *dev)
1836 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
1837 const struct rte_eth_txmode *txmode = &dev->data->dev_conf.txmode;
1838 struct virtio_hw *hw = dev->data->dev_private;
1839 uint32_t ether_hdr_len = ETHER_HDR_LEN + VLAN_TAG_LEN +
1841 uint64_t rx_offloads = rxmode->offloads;
1842 uint64_t tx_offloads = txmode->offloads;
1843 uint64_t req_features;
1846 PMD_INIT_LOG(DEBUG, "configure");
1847 req_features = VIRTIO_PMD_DEFAULT_GUEST_FEATURES;
1849 if (dev->data->dev_conf.intr_conf.rxq) {
1850 ret = virtio_init_device(dev, hw->req_guest_features);
1855 if (rxmode->max_rx_pkt_len > hw->max_mtu + ether_hdr_len)
1856 req_features &= ~(1ULL << VIRTIO_NET_F_MTU);
1858 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM |
1859 DEV_RX_OFFLOAD_TCP_CKSUM))
1860 req_features |= (1ULL << VIRTIO_NET_F_GUEST_CSUM);
1862 if (rx_offloads & DEV_RX_OFFLOAD_TCP_LRO)
1864 (1ULL << VIRTIO_NET_F_GUEST_TSO4) |
1865 (1ULL << VIRTIO_NET_F_GUEST_TSO6);
1867 if (tx_offloads & (DEV_TX_OFFLOAD_UDP_CKSUM |
1868 DEV_TX_OFFLOAD_TCP_CKSUM))
1869 req_features |= (1ULL << VIRTIO_NET_F_CSUM);
1871 if (tx_offloads & DEV_TX_OFFLOAD_TCP_TSO)
1873 (1ULL << VIRTIO_NET_F_HOST_TSO4) |
1874 (1ULL << VIRTIO_NET_F_HOST_TSO6);
1876 /* if request features changed, reinit the device */
1877 if (req_features != hw->req_guest_features) {
1878 ret = virtio_init_device(dev, req_features);
1883 if ((rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM |
1884 DEV_RX_OFFLOAD_TCP_CKSUM)) &&
1885 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM)) {
1887 "rx checksum not available on this host");
1891 if ((rx_offloads & DEV_RX_OFFLOAD_TCP_LRO) &&
1892 (!vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) ||
1893 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6))) {
1895 "Large Receive Offload not available on this host");
1899 /* start control queue */
1900 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ))
1901 virtio_dev_cq_start(dev);
1903 if (rx_offloads & DEV_RX_OFFLOAD_VLAN_STRIP)
1906 if ((rx_offloads & DEV_RX_OFFLOAD_VLAN_FILTER)
1907 && !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
1909 "vlan filtering not available on this host");
1913 hw->has_tx_offload = tx_offload_enabled(hw);
1914 hw->has_rx_offload = rx_offload_enabled(hw);
1916 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
1917 /* Enable vector (0) for Link State Intrerrupt */
1918 if (VTPCI_OPS(hw)->set_config_irq(hw, 0) ==
1919 VIRTIO_MSI_NO_VECTOR) {
1920 PMD_DRV_LOG(ERR, "failed to set config vector");
1924 rte_spinlock_init(&hw->state_lock);
1926 hw->use_simple_rx = 1;
1928 if (vtpci_with_feature(hw, VIRTIO_F_IN_ORDER)) {
1929 hw->use_inorder_tx = 1;
1930 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
1931 hw->use_inorder_rx = 1;
1932 hw->use_simple_rx = 0;
1934 hw->use_inorder_rx = 0;
1938 #if defined RTE_ARCH_ARM64 || defined RTE_ARCH_ARM
1939 if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON)) {
1940 hw->use_simple_rx = 0;
1943 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
1944 hw->use_simple_rx = 0;
1947 if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM |
1948 DEV_RX_OFFLOAD_TCP_CKSUM |
1949 DEV_RX_OFFLOAD_TCP_LRO |
1950 DEV_RX_OFFLOAD_VLAN_STRIP))
1951 hw->use_simple_rx = 0;
1960 virtio_dev_start(struct rte_eth_dev *dev)
1962 uint16_t nb_queues, i;
1963 struct virtnet_rx *rxvq;
1964 struct virtnet_tx *txvq __rte_unused;
1965 struct virtio_hw *hw = dev->data->dev_private;
1968 /* Finish the initialization of the queues */
1969 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1970 ret = virtio_dev_rx_queue_setup_finish(dev, i);
1974 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1975 ret = virtio_dev_tx_queue_setup_finish(dev, i);
1980 /* check if lsc interrupt feature is enabled */
1981 if (dev->data->dev_conf.intr_conf.lsc) {
1982 if (!(dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)) {
1983 PMD_DRV_LOG(ERR, "link status not supported by host");
1988 /* Enable uio/vfio intr/eventfd mapping: althrough we already did that
1989 * in device configure, but it could be unmapped when device is
1992 if (dev->data->dev_conf.intr_conf.lsc ||
1993 dev->data->dev_conf.intr_conf.rxq) {
1994 virtio_intr_disable(dev);
1996 /* Setup interrupt callback */
1997 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
1998 rte_intr_callback_register(dev->intr_handle,
1999 virtio_interrupt_handler,
2002 if (virtio_intr_enable(dev) < 0) {
2003 PMD_DRV_LOG(ERR, "interrupt enable failed");
2008 /*Notify the backend
2009 *Otherwise the tap backend might already stop its queue due to fullness.
2010 *vhost backend will have no chance to be waked up
2012 nb_queues = RTE_MAX(dev->data->nb_rx_queues, dev->data->nb_tx_queues);
2013 if (hw->max_queue_pairs > 1) {
2014 if (virtio_set_multiple_queues(dev, nb_queues) != 0)
2018 PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues);
2020 for (i = 0; i < dev->data->nb_rx_queues; i++) {
2021 rxvq = dev->data->rx_queues[i];
2022 /* Flush the old packets */
2023 virtqueue_rxvq_flush(rxvq->vq);
2024 virtqueue_notify(rxvq->vq);
2027 for (i = 0; i < dev->data->nb_tx_queues; i++) {
2028 txvq = dev->data->tx_queues[i];
2029 virtqueue_notify(txvq->vq);
2032 PMD_INIT_LOG(DEBUG, "Notified backend at initialization");
2034 for (i = 0; i < dev->data->nb_rx_queues; i++) {
2035 rxvq = dev->data->rx_queues[i];
2036 VIRTQUEUE_DUMP(rxvq->vq);
2039 for (i = 0; i < dev->data->nb_tx_queues; i++) {
2040 txvq = dev->data->tx_queues[i];
2041 VIRTQUEUE_DUMP(txvq->vq);
2044 set_rxtx_funcs(dev);
2047 /* Initialize Link state */
2048 virtio_dev_link_update(dev, 0);
2053 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev)
2055 struct virtio_hw *hw = dev->data->dev_private;
2056 uint16_t nr_vq = virtio_get_nr_vq(hw);
2057 const char *type __rte_unused;
2058 unsigned int i, mbuf_num = 0;
2059 struct virtqueue *vq;
2060 struct rte_mbuf *buf;
2063 if (hw->vqs == NULL)
2066 for (i = 0; i < nr_vq; i++) {
2071 queue_type = virtio_get_queue_type(hw, i);
2072 if (queue_type == VTNET_RQ)
2074 else if (queue_type == VTNET_TQ)
2080 "Before freeing %s[%d] used and unused buf",
2084 while ((buf = virtqueue_detach_unused(vq)) != NULL) {
2085 rte_pktmbuf_free(buf);
2090 "After freeing %s[%d] used and unused buf",
2095 PMD_INIT_LOG(DEBUG, "%d mbufs freed", mbuf_num);
2099 * Stop device: disable interrupt and mark link down
2102 virtio_dev_stop(struct rte_eth_dev *dev)
2104 struct virtio_hw *hw = dev->data->dev_private;
2105 struct rte_eth_link link;
2106 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf;
2108 PMD_INIT_LOG(DEBUG, "stop");
2110 rte_spinlock_lock(&hw->state_lock);
2113 hw->started = false;
2115 if (intr_conf->lsc || intr_conf->rxq) {
2116 virtio_intr_disable(dev);
2118 /* Reset interrupt callback */
2119 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) {
2120 rte_intr_callback_unregister(dev->intr_handle,
2121 virtio_interrupt_handler,
2126 memset(&link, 0, sizeof(link));
2127 rte_eth_linkstatus_set(dev, &link);
2129 rte_spinlock_unlock(&hw->state_lock);
2133 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete)
2135 struct rte_eth_link link;
2137 struct virtio_hw *hw = dev->data->dev_private;
2139 memset(&link, 0, sizeof(link));
2140 link.link_duplex = ETH_LINK_FULL_DUPLEX;
2141 link.link_speed = ETH_SPEED_NUM_10G;
2142 link.link_autoneg = ETH_LINK_FIXED;
2145 link.link_status = ETH_LINK_DOWN;
2146 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
2147 PMD_INIT_LOG(DEBUG, "Get link status from hw");
2148 vtpci_read_dev_config(hw,
2149 offsetof(struct virtio_net_config, status),
2150 &status, sizeof(status));
2151 if ((status & VIRTIO_NET_S_LINK_UP) == 0) {
2152 link.link_status = ETH_LINK_DOWN;
2153 PMD_INIT_LOG(DEBUG, "Port %d is down",
2154 dev->data->port_id);
2156 link.link_status = ETH_LINK_UP;
2157 PMD_INIT_LOG(DEBUG, "Port %d is up",
2158 dev->data->port_id);
2161 link.link_status = ETH_LINK_UP;
2164 return rte_eth_linkstatus_set(dev, &link);
2168 virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask)
2170 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
2171 struct virtio_hw *hw = dev->data->dev_private;
2172 uint64_t offloads = rxmode->offloads;
2174 if (mask & ETH_VLAN_FILTER_MASK) {
2175 if ((offloads & DEV_RX_OFFLOAD_VLAN_FILTER) &&
2176 !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
2179 "vlan filtering not available on this host");
2185 if (mask & ETH_VLAN_STRIP_MASK)
2186 hw->vlan_strip = !!(offloads & DEV_RX_OFFLOAD_VLAN_STRIP);
2192 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
2194 uint64_t tso_mask, host_features;
2195 struct virtio_hw *hw = dev->data->dev_private;
2197 dev_info->speed_capa = ETH_LINK_SPEED_10G; /* fake value */
2199 dev_info->max_rx_queues =
2200 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_RX_QUEUES);
2201 dev_info->max_tx_queues =
2202 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_TX_QUEUES);
2203 dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE;
2204 dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN;
2205 dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS;
2207 host_features = VTPCI_OPS(hw)->get_features(hw);
2208 dev_info->rx_offload_capa = DEV_RX_OFFLOAD_VLAN_STRIP;
2209 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_JUMBO_FRAME;
2210 if (host_features & (1ULL << VIRTIO_NET_F_GUEST_CSUM)) {
2211 dev_info->rx_offload_capa |=
2212 DEV_RX_OFFLOAD_TCP_CKSUM |
2213 DEV_RX_OFFLOAD_UDP_CKSUM;
2215 if (host_features & (1ULL << VIRTIO_NET_F_CTRL_VLAN))
2216 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_VLAN_FILTER;
2217 tso_mask = (1ULL << VIRTIO_NET_F_GUEST_TSO4) |
2218 (1ULL << VIRTIO_NET_F_GUEST_TSO6);
2219 if ((host_features & tso_mask) == tso_mask)
2220 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_TCP_LRO;
2222 dev_info->tx_offload_capa = DEV_TX_OFFLOAD_MULTI_SEGS |
2223 DEV_TX_OFFLOAD_VLAN_INSERT;
2224 if (host_features & (1ULL << VIRTIO_NET_F_CSUM)) {
2225 dev_info->tx_offload_capa |=
2226 DEV_TX_OFFLOAD_UDP_CKSUM |
2227 DEV_TX_OFFLOAD_TCP_CKSUM;
2229 tso_mask = (1ULL << VIRTIO_NET_F_HOST_TSO4) |
2230 (1ULL << VIRTIO_NET_F_HOST_TSO6);
2231 if ((host_features & tso_mask) == tso_mask)
2232 dev_info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO;
2236 * It enables testpmd to collect per queue stats.
2239 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev,
2240 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx,
2241 __rte_unused uint8_t is_rx)
2246 RTE_PMD_EXPORT_NAME(net_virtio, __COUNTER__);
2247 RTE_PMD_REGISTER_PCI_TABLE(net_virtio, pci_id_virtio_map);
2248 RTE_PMD_REGISTER_KMOD_DEP(net_virtio, "* igb_uio | uio_pci_generic | vfio-pci");
2250 RTE_INIT(virtio_init_log)
2252 virtio_logtype_init = rte_log_register("pmd.net.virtio.init");
2253 if (virtio_logtype_init >= 0)
2254 rte_log_set_level(virtio_logtype_init, RTE_LOG_NOTICE);
2255 virtio_logtype_driver = rte_log_register("pmd.net.virtio.driver");
2256 if (virtio_logtype_driver >= 0)
2257 rte_log_set_level(virtio_logtype_driver, RTE_LOG_NOTICE);