4 * Copyright(c) 2010-2016 Intel Corporation. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * * Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * * Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
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18 * contributors may be used to endorse or promote products derived
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21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
40 #include <rte_ethdev.h>
41 #include <rte_memcpy.h>
42 #include <rte_string_fns.h>
43 #include <rte_memzone.h>
44 #include <rte_malloc.h>
45 #include <rte_atomic.h>
46 #include <rte_branch_prediction.h>
48 #include <rte_ether.h>
49 #include <rte_common.h>
50 #include <rte_errno.h>
52 #include <rte_memory.h>
56 #include "virtio_ethdev.h"
57 #include "virtio_pci.h"
58 #include "virtio_logs.h"
59 #include "virtqueue.h"
60 #include "virtio_rxtx.h"
62 static int eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev);
63 static int virtio_dev_configure(struct rte_eth_dev *dev);
64 static int virtio_dev_start(struct rte_eth_dev *dev);
65 static void virtio_dev_stop(struct rte_eth_dev *dev);
66 static void virtio_dev_promiscuous_enable(struct rte_eth_dev *dev);
67 static void virtio_dev_promiscuous_disable(struct rte_eth_dev *dev);
68 static void virtio_dev_allmulticast_enable(struct rte_eth_dev *dev);
69 static void virtio_dev_allmulticast_disable(struct rte_eth_dev *dev);
70 static void virtio_dev_info_get(struct rte_eth_dev *dev,
71 struct rte_eth_dev_info *dev_info);
72 static int virtio_dev_link_update(struct rte_eth_dev *dev,
73 __rte_unused int wait_to_complete);
75 static void virtio_set_hwaddr(struct virtio_hw *hw);
76 static void virtio_get_hwaddr(struct virtio_hw *hw);
78 static void virtio_dev_stats_get(struct rte_eth_dev *dev,
79 struct rte_eth_stats *stats);
80 static int virtio_dev_xstats_get(struct rte_eth_dev *dev,
81 struct rte_eth_xstat *xstats, unsigned n);
82 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev,
83 struct rte_eth_xstat_name *xstats_names,
85 static void virtio_dev_stats_reset(struct rte_eth_dev *dev);
86 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev);
87 static int virtio_vlan_filter_set(struct rte_eth_dev *dev,
88 uint16_t vlan_id, int on);
89 static void virtio_mac_addr_add(struct rte_eth_dev *dev,
90 struct ether_addr *mac_addr,
91 uint32_t index, uint32_t vmdq __rte_unused);
92 static void virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index);
93 static void virtio_mac_addr_set(struct rte_eth_dev *dev,
94 struct ether_addr *mac_addr);
96 static int virtio_dev_queue_stats_mapping_set(
97 __rte_unused struct rte_eth_dev *eth_dev,
98 __rte_unused uint16_t queue_id,
99 __rte_unused uint8_t stat_idx,
100 __rte_unused uint8_t is_rx);
103 * The set of PCI devices this driver supports
105 static const struct rte_pci_id pci_id_virtio_map[] = {
106 { RTE_PCI_DEVICE(VIRTIO_PCI_VENDORID, VIRTIO_PCI_LEGACY_DEVICEID_NET) },
107 { RTE_PCI_DEVICE(VIRTIO_PCI_VENDORID, VIRTIO_PCI_MODERN_DEVICEID_NET) },
108 { .vendor_id = 0, /* sentinel */ },
111 struct rte_virtio_xstats_name_off {
112 char name[RTE_ETH_XSTATS_NAME_SIZE];
116 /* [rt]x_qX_ is prepended to the name string here */
117 static const struct rte_virtio_xstats_name_off rte_virtio_rxq_stat_strings[] = {
118 {"good_packets", offsetof(struct virtnet_rx, stats.packets)},
119 {"good_bytes", offsetof(struct virtnet_rx, stats.bytes)},
120 {"errors", offsetof(struct virtnet_rx, stats.errors)},
121 {"multicast_packets", offsetof(struct virtnet_rx, stats.multicast)},
122 {"broadcast_packets", offsetof(struct virtnet_rx, stats.broadcast)},
123 {"undersize_packets", offsetof(struct virtnet_rx, stats.size_bins[0])},
124 {"size_64_packets", offsetof(struct virtnet_rx, stats.size_bins[1])},
125 {"size_65_127_packets", offsetof(struct virtnet_rx, stats.size_bins[2])},
126 {"size_128_255_packets", offsetof(struct virtnet_rx, stats.size_bins[3])},
127 {"size_256_511_packets", offsetof(struct virtnet_rx, stats.size_bins[4])},
128 {"size_512_1023_packets", offsetof(struct virtnet_rx, stats.size_bins[5])},
129 {"size_1024_1518_packets", offsetof(struct virtnet_rx, stats.size_bins[6])},
130 {"size_1519_max_packets", offsetof(struct virtnet_rx, stats.size_bins[7])},
133 /* [rt]x_qX_ is prepended to the name string here */
134 static const struct rte_virtio_xstats_name_off rte_virtio_txq_stat_strings[] = {
135 {"good_packets", offsetof(struct virtnet_tx, stats.packets)},
136 {"good_bytes", offsetof(struct virtnet_tx, stats.bytes)},
137 {"errors", offsetof(struct virtnet_tx, stats.errors)},
138 {"multicast_packets", offsetof(struct virtnet_tx, stats.multicast)},
139 {"broadcast_packets", offsetof(struct virtnet_tx, stats.broadcast)},
140 {"undersize_packets", offsetof(struct virtnet_tx, stats.size_bins[0])},
141 {"size_64_packets", offsetof(struct virtnet_tx, stats.size_bins[1])},
142 {"size_65_127_packets", offsetof(struct virtnet_tx, stats.size_bins[2])},
143 {"size_128_255_packets", offsetof(struct virtnet_tx, stats.size_bins[3])},
144 {"size_256_511_packets", offsetof(struct virtnet_tx, stats.size_bins[4])},
145 {"size_512_1023_packets", offsetof(struct virtnet_tx, stats.size_bins[5])},
146 {"size_1024_1518_packets", offsetof(struct virtnet_tx, stats.size_bins[6])},
147 {"size_1519_max_packets", offsetof(struct virtnet_tx, stats.size_bins[7])},
150 #define VIRTIO_NB_RXQ_XSTATS (sizeof(rte_virtio_rxq_stat_strings) / \
151 sizeof(rte_virtio_rxq_stat_strings[0]))
152 #define VIRTIO_NB_TXQ_XSTATS (sizeof(rte_virtio_txq_stat_strings) / \
153 sizeof(rte_virtio_txq_stat_strings[0]))
156 virtio_send_command(struct virtnet_ctl *cvq, struct virtio_pmd_ctrl *ctrl,
157 int *dlen, int pkt_num)
161 virtio_net_ctrl_ack status = ~0;
162 struct virtio_pmd_ctrl result;
163 struct virtqueue *vq;
165 ctrl->status = status;
167 if (!cvq || !cvq->vq) {
168 PMD_INIT_LOG(ERR, "Control queue is not supported.");
172 head = vq->vq_desc_head_idx;
174 PMD_INIT_LOG(DEBUG, "vq->vq_desc_head_idx = %d, status = %d, "
175 "vq->hw->cvq = %p vq = %p",
176 vq->vq_desc_head_idx, status, vq->hw->cvq, vq);
178 if ((vq->vq_free_cnt < ((uint32_t)pkt_num + 2)) || (pkt_num < 1))
181 memcpy(cvq->virtio_net_hdr_mz->addr, ctrl,
182 sizeof(struct virtio_pmd_ctrl));
185 * Format is enforced in qemu code:
186 * One TX packet for header;
187 * At least one TX packet per argument;
188 * One RX packet for ACK.
190 vq->vq_ring.desc[head].flags = VRING_DESC_F_NEXT;
191 vq->vq_ring.desc[head].addr = cvq->virtio_net_hdr_mem;
192 vq->vq_ring.desc[head].len = sizeof(struct virtio_net_ctrl_hdr);
194 i = vq->vq_ring.desc[head].next;
196 for (k = 0; k < pkt_num; k++) {
197 vq->vq_ring.desc[i].flags = VRING_DESC_F_NEXT;
198 vq->vq_ring.desc[i].addr = cvq->virtio_net_hdr_mem
199 + sizeof(struct virtio_net_ctrl_hdr)
200 + sizeof(ctrl->status) + sizeof(uint8_t)*sum;
201 vq->vq_ring.desc[i].len = dlen[k];
204 i = vq->vq_ring.desc[i].next;
207 vq->vq_ring.desc[i].flags = VRING_DESC_F_WRITE;
208 vq->vq_ring.desc[i].addr = cvq->virtio_net_hdr_mem
209 + sizeof(struct virtio_net_ctrl_hdr);
210 vq->vq_ring.desc[i].len = sizeof(ctrl->status);
213 vq->vq_desc_head_idx = vq->vq_ring.desc[i].next;
215 vq_update_avail_ring(vq, head);
216 vq_update_avail_idx(vq);
218 PMD_INIT_LOG(DEBUG, "vq->vq_queue_index = %d", vq->vq_queue_index);
220 virtqueue_notify(vq);
223 while (VIRTQUEUE_NUSED(vq) == 0) {
228 while (VIRTQUEUE_NUSED(vq)) {
229 uint32_t idx, desc_idx, used_idx;
230 struct vring_used_elem *uep;
232 used_idx = (uint32_t)(vq->vq_used_cons_idx
233 & (vq->vq_nentries - 1));
234 uep = &vq->vq_ring.used->ring[used_idx];
235 idx = (uint32_t) uep->id;
238 while (vq->vq_ring.desc[desc_idx].flags & VRING_DESC_F_NEXT) {
239 desc_idx = vq->vq_ring.desc[desc_idx].next;
243 vq->vq_ring.desc[desc_idx].next = vq->vq_desc_head_idx;
244 vq->vq_desc_head_idx = idx;
246 vq->vq_used_cons_idx++;
250 PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\nvq->vq_desc_head_idx=%d",
251 vq->vq_free_cnt, vq->vq_desc_head_idx);
253 memcpy(&result, cvq->virtio_net_hdr_mz->addr,
254 sizeof(struct virtio_pmd_ctrl));
256 return result.status;
260 virtio_set_multiple_queues(struct rte_eth_dev *dev, uint16_t nb_queues)
262 struct virtio_hw *hw = dev->data->dev_private;
263 struct virtio_pmd_ctrl ctrl;
267 ctrl.hdr.class = VIRTIO_NET_CTRL_MQ;
268 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET;
269 memcpy(ctrl.data, &nb_queues, sizeof(uint16_t));
271 dlen[0] = sizeof(uint16_t);
273 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
275 PMD_INIT_LOG(ERR, "Multiqueue configured but send command "
276 "failed, this is too late now...");
284 virtio_dev_queue_release(void *queue __rte_unused)
290 virtio_get_queue_type(struct virtio_hw *hw, uint16_t vtpci_queue_idx)
292 if (vtpci_queue_idx == hw->max_queue_pairs * 2)
294 else if (vtpci_queue_idx % 2 == 0)
301 virtio_get_nr_vq(struct virtio_hw *hw)
303 uint16_t nr_vq = hw->max_queue_pairs * 2;
305 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ))
312 virtio_init_queue(struct rte_eth_dev *dev, uint16_t vtpci_queue_idx)
314 char vq_name[VIRTQUEUE_MAX_NAME_SZ];
315 char vq_hdr_name[VIRTQUEUE_MAX_NAME_SZ];
316 const struct rte_memzone *mz = NULL, *hdr_mz = NULL;
317 unsigned int vq_size, size;
318 struct virtio_hw *hw = dev->data->dev_private;
319 struct virtnet_rx *rxvq = NULL;
320 struct virtnet_tx *txvq = NULL;
321 struct virtnet_ctl *cvq = NULL;
322 struct virtqueue *vq;
323 size_t sz_hdr_mz = 0;
324 void *sw_ring = NULL;
325 int queue_type = virtio_get_queue_type(hw, vtpci_queue_idx);
328 PMD_INIT_LOG(DEBUG, "setting up queue: %u", vtpci_queue_idx);
331 * Read the virtqueue size from the Queue Size field
332 * Always power of 2 and if 0 virtqueue does not exist
334 vq_size = hw->vtpci_ops->get_queue_num(hw, vtpci_queue_idx);
335 PMD_INIT_LOG(DEBUG, "vq_size: %u", vq_size);
337 PMD_INIT_LOG(ERR, "virtqueue does not exist");
341 if (!rte_is_power_of_2(vq_size)) {
342 PMD_INIT_LOG(ERR, "virtqueue size is not powerof 2");
346 snprintf(vq_name, sizeof(vq_name), "port%d_vq%d",
347 dev->data->port_id, vtpci_queue_idx);
349 size = RTE_ALIGN_CEIL(sizeof(*vq) +
350 vq_size * sizeof(struct vq_desc_extra),
351 RTE_CACHE_LINE_SIZE);
352 if (queue_type == VTNET_TQ) {
354 * For each xmit packet, allocate a virtio_net_hdr
355 * and indirect ring elements
357 sz_hdr_mz = vq_size * sizeof(struct virtio_tx_region);
358 } else if (queue_type == VTNET_CQ) {
359 /* Allocate a page for control vq command, data and status */
360 sz_hdr_mz = PAGE_SIZE;
363 vq = rte_zmalloc_socket(vq_name, size, RTE_CACHE_LINE_SIZE,
366 PMD_INIT_LOG(ERR, "can not allocate vq");
369 hw->vqs[vtpci_queue_idx] = vq;
372 vq->vq_queue_index = vtpci_queue_idx;
373 vq->vq_nentries = vq_size;
374 vq->vq_free_cnt = vq_size;
377 * Reserve a memzone for vring elements
379 size = vring_size(vq_size, VIRTIO_PCI_VRING_ALIGN);
380 vq->vq_ring_size = RTE_ALIGN_CEIL(size, VIRTIO_PCI_VRING_ALIGN);
381 PMD_INIT_LOG(DEBUG, "vring_size: %d, rounded_vring_size: %d",
382 size, vq->vq_ring_size);
384 mz = rte_memzone_reserve_aligned(vq_name, vq->vq_ring_size,
386 0, VIRTIO_PCI_VRING_ALIGN);
388 if (rte_errno == EEXIST)
389 mz = rte_memzone_lookup(vq_name);
396 memset(mz->addr, 0, sizeof(mz->len));
398 vq->vq_ring_mem = mz->phys_addr;
399 vq->vq_ring_virt_mem = mz->addr;
400 PMD_INIT_LOG(DEBUG, "vq->vq_ring_mem: 0x%" PRIx64,
401 (uint64_t)mz->phys_addr);
402 PMD_INIT_LOG(DEBUG, "vq->vq_ring_virt_mem: 0x%" PRIx64,
403 (uint64_t)(uintptr_t)mz->addr);
406 snprintf(vq_hdr_name, sizeof(vq_hdr_name), "port%d_vq%d_hdr",
407 dev->data->port_id, vtpci_queue_idx);
408 hdr_mz = rte_memzone_reserve_aligned(vq_hdr_name, sz_hdr_mz,
410 RTE_CACHE_LINE_SIZE);
411 if (hdr_mz == NULL) {
412 if (rte_errno == EEXIST)
413 hdr_mz = rte_memzone_lookup(vq_hdr_name);
414 if (hdr_mz == NULL) {
421 if (queue_type == VTNET_RQ) {
422 size_t sz_sw = (RTE_PMD_VIRTIO_RX_MAX_BURST + vq_size) *
423 sizeof(vq->sw_ring[0]);
425 sw_ring = rte_zmalloc_socket("sw_ring", sz_sw,
426 RTE_CACHE_LINE_SIZE, SOCKET_ID_ANY);
428 PMD_INIT_LOG(ERR, "can not allocate RX soft ring");
433 vq->sw_ring = sw_ring;
436 rxvq->port_id = dev->data->port_id;
438 } else if (queue_type == VTNET_TQ) {
441 txvq->port_id = dev->data->port_id;
443 txvq->virtio_net_hdr_mz = hdr_mz;
444 txvq->virtio_net_hdr_mem = hdr_mz->phys_addr;
445 } else if (queue_type == VTNET_CQ) {
449 cvq->virtio_net_hdr_mz = hdr_mz;
450 cvq->virtio_net_hdr_mem = hdr_mz->phys_addr;
451 memset(cvq->virtio_net_hdr_mz->addr, 0, PAGE_SIZE);
456 /* For virtio_user case (that is when dev->pci_dev is NULL), we use
457 * virtual address. And we need properly set _offset_, please see
458 * VIRTIO_MBUF_DATA_DMA_ADDR in virtqueue.h for more information.
461 vq->offset = offsetof(struct rte_mbuf, buf_physaddr);
463 vq->vq_ring_mem = (uintptr_t)mz->addr;
464 vq->offset = offsetof(struct rte_mbuf, buf_addr);
465 if (queue_type == VTNET_TQ)
466 txvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr;
467 else if (queue_type == VTNET_CQ)
468 cvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr;
471 if (queue_type == VTNET_TQ) {
472 struct virtio_tx_region *txr;
476 memset(txr, 0, vq_size * sizeof(*txr));
477 for (i = 0; i < vq_size; i++) {
478 struct vring_desc *start_dp = txr[i].tx_indir;
480 vring_desc_init(start_dp, RTE_DIM(txr[i].tx_indir));
482 /* first indirect descriptor is always the tx header */
483 start_dp->addr = txvq->virtio_net_hdr_mem
485 + offsetof(struct virtio_tx_region, tx_hdr);
487 start_dp->len = hw->vtnet_hdr_size;
488 start_dp->flags = VRING_DESC_F_NEXT;
492 if (hw->vtpci_ops->setup_queue(hw, vq) < 0) {
493 PMD_INIT_LOG(ERR, "setup_queue failed");
501 rte_memzone_free(hdr_mz);
502 rte_memzone_free(mz);
509 virtio_free_queues(struct virtio_hw *hw)
511 uint16_t nr_vq = virtio_get_nr_vq(hw);
512 struct virtqueue *vq;
516 for (i = 0; i < nr_vq; i++) {
521 queue_type = virtio_get_queue_type(hw, i);
522 if (queue_type == VTNET_RQ) {
523 rte_free(vq->sw_ring);
524 rte_memzone_free(vq->rxq.mz);
525 } else if (queue_type == VTNET_TQ) {
526 rte_memzone_free(vq->txq.mz);
527 rte_memzone_free(vq->txq.virtio_net_hdr_mz);
529 rte_memzone_free(vq->cq.mz);
530 rte_memzone_free(vq->cq.virtio_net_hdr_mz);
540 virtio_alloc_queues(struct rte_eth_dev *dev)
542 struct virtio_hw *hw = dev->data->dev_private;
543 uint16_t nr_vq = virtio_get_nr_vq(hw);
547 hw->vqs = rte_zmalloc(NULL, sizeof(struct virtqueue *) * nr_vq, 0);
549 PMD_INIT_LOG(ERR, "failed to allocate vqs");
553 for (i = 0; i < nr_vq; i++) {
554 ret = virtio_init_queue(dev, i);
556 virtio_free_queues(hw);
565 virtio_dev_close(struct rte_eth_dev *dev)
567 struct virtio_hw *hw = dev->data->dev_private;
569 PMD_INIT_LOG(DEBUG, "virtio_dev_close");
572 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
573 vtpci_irq_config(hw, VIRTIO_MSI_NO_VECTOR);
576 virtio_dev_free_mbufs(dev);
577 virtio_free_queues(hw);
581 virtio_dev_promiscuous_enable(struct rte_eth_dev *dev)
583 struct virtio_hw *hw = dev->data->dev_private;
584 struct virtio_pmd_ctrl ctrl;
588 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
589 PMD_INIT_LOG(INFO, "host does not support rx control\n");
593 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
594 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
598 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
600 PMD_INIT_LOG(ERR, "Failed to enable promisc");
604 virtio_dev_promiscuous_disable(struct rte_eth_dev *dev)
606 struct virtio_hw *hw = dev->data->dev_private;
607 struct virtio_pmd_ctrl ctrl;
611 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
612 PMD_INIT_LOG(INFO, "host does not support rx control\n");
616 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
617 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
621 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
623 PMD_INIT_LOG(ERR, "Failed to disable promisc");
627 virtio_dev_allmulticast_enable(struct rte_eth_dev *dev)
629 struct virtio_hw *hw = dev->data->dev_private;
630 struct virtio_pmd_ctrl ctrl;
634 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
635 PMD_INIT_LOG(INFO, "host does not support rx control\n");
639 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
640 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
644 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
646 PMD_INIT_LOG(ERR, "Failed to enable allmulticast");
650 virtio_dev_allmulticast_disable(struct rte_eth_dev *dev)
652 struct virtio_hw *hw = dev->data->dev_private;
653 struct virtio_pmd_ctrl ctrl;
657 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
658 PMD_INIT_LOG(INFO, "host does not support rx control\n");
662 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
663 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
667 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
669 PMD_INIT_LOG(ERR, "Failed to disable allmulticast");
672 #define VLAN_TAG_LEN 4 /* 802.3ac tag (not DMA'd) */
674 virtio_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
676 struct virtio_hw *hw = dev->data->dev_private;
677 uint32_t ether_hdr_len = ETHER_HDR_LEN + VLAN_TAG_LEN +
679 uint32_t frame_size = mtu + ether_hdr_len;
681 if (mtu < ETHER_MIN_MTU || frame_size > VIRTIO_MAX_RX_PKTLEN) {
682 PMD_INIT_LOG(ERR, "MTU should be between %d and %d\n",
683 ETHER_MIN_MTU, VIRTIO_MAX_RX_PKTLEN - ether_hdr_len);
690 * dev_ops for virtio, bare necessities for basic operation
692 static const struct eth_dev_ops virtio_eth_dev_ops = {
693 .dev_configure = virtio_dev_configure,
694 .dev_start = virtio_dev_start,
695 .dev_stop = virtio_dev_stop,
696 .dev_close = virtio_dev_close,
697 .promiscuous_enable = virtio_dev_promiscuous_enable,
698 .promiscuous_disable = virtio_dev_promiscuous_disable,
699 .allmulticast_enable = virtio_dev_allmulticast_enable,
700 .allmulticast_disable = virtio_dev_allmulticast_disable,
701 .mtu_set = virtio_mtu_set,
702 .dev_infos_get = virtio_dev_info_get,
703 .stats_get = virtio_dev_stats_get,
704 .xstats_get = virtio_dev_xstats_get,
705 .xstats_get_names = virtio_dev_xstats_get_names,
706 .stats_reset = virtio_dev_stats_reset,
707 .xstats_reset = virtio_dev_stats_reset,
708 .link_update = virtio_dev_link_update,
709 .rx_queue_setup = virtio_dev_rx_queue_setup,
710 .rx_queue_release = virtio_dev_queue_release,
711 .tx_queue_setup = virtio_dev_tx_queue_setup,
712 .tx_queue_release = virtio_dev_queue_release,
713 /* collect stats per queue */
714 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set,
715 .vlan_filter_set = virtio_vlan_filter_set,
716 .mac_addr_add = virtio_mac_addr_add,
717 .mac_addr_remove = virtio_mac_addr_remove,
718 .mac_addr_set = virtio_mac_addr_set,
722 virtio_dev_atomic_read_link_status(struct rte_eth_dev *dev,
723 struct rte_eth_link *link)
725 struct rte_eth_link *dst = link;
726 struct rte_eth_link *src = &(dev->data->dev_link);
728 if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
729 *(uint64_t *)src) == 0)
736 * Atomically writes the link status information into global
737 * structure rte_eth_dev.
740 * - Pointer to the structure rte_eth_dev to read from.
741 * - Pointer to the buffer to be saved with the link status.
744 * - On success, zero.
745 * - On failure, negative value.
748 virtio_dev_atomic_write_link_status(struct rte_eth_dev *dev,
749 struct rte_eth_link *link)
751 struct rte_eth_link *dst = &(dev->data->dev_link);
752 struct rte_eth_link *src = link;
754 if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
755 *(uint64_t *)src) == 0)
762 virtio_update_stats(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
766 for (i = 0; i < dev->data->nb_tx_queues; i++) {
767 const struct virtnet_tx *txvq = dev->data->tx_queues[i];
771 stats->opackets += txvq->stats.packets;
772 stats->obytes += txvq->stats.bytes;
773 stats->oerrors += txvq->stats.errors;
775 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
776 stats->q_opackets[i] = txvq->stats.packets;
777 stats->q_obytes[i] = txvq->stats.bytes;
781 for (i = 0; i < dev->data->nb_rx_queues; i++) {
782 const struct virtnet_rx *rxvq = dev->data->rx_queues[i];
786 stats->ipackets += rxvq->stats.packets;
787 stats->ibytes += rxvq->stats.bytes;
788 stats->ierrors += rxvq->stats.errors;
790 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
791 stats->q_ipackets[i] = rxvq->stats.packets;
792 stats->q_ibytes[i] = rxvq->stats.bytes;
796 stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed;
799 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev,
800 struct rte_eth_xstat_name *xstats_names,
801 __rte_unused unsigned limit)
807 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS +
808 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS;
810 if (xstats_names != NULL) {
811 /* Note: limit checked in rte_eth_xstats_names() */
813 for (i = 0; i < dev->data->nb_rx_queues; i++) {
814 struct virtqueue *rxvq = dev->data->rx_queues[i];
817 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) {
818 snprintf(xstats_names[count].name,
819 sizeof(xstats_names[count].name),
821 rte_virtio_rxq_stat_strings[t].name);
826 for (i = 0; i < dev->data->nb_tx_queues; i++) {
827 struct virtqueue *txvq = dev->data->tx_queues[i];
830 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) {
831 snprintf(xstats_names[count].name,
832 sizeof(xstats_names[count].name),
834 rte_virtio_txq_stat_strings[t].name);
844 virtio_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats,
850 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS +
851 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS;
856 for (i = 0; i < dev->data->nb_rx_queues; i++) {
857 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
864 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) {
865 xstats[count].value = *(uint64_t *)(((char *)rxvq) +
866 rte_virtio_rxq_stat_strings[t].offset);
871 for (i = 0; i < dev->data->nb_tx_queues; i++) {
872 struct virtnet_tx *txvq = dev->data->tx_queues[i];
879 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) {
880 xstats[count].value = *(uint64_t *)(((char *)txvq) +
881 rte_virtio_txq_stat_strings[t].offset);
890 virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
892 virtio_update_stats(dev, stats);
896 virtio_dev_stats_reset(struct rte_eth_dev *dev)
900 for (i = 0; i < dev->data->nb_tx_queues; i++) {
901 struct virtnet_tx *txvq = dev->data->tx_queues[i];
905 txvq->stats.packets = 0;
906 txvq->stats.bytes = 0;
907 txvq->stats.errors = 0;
908 txvq->stats.multicast = 0;
909 txvq->stats.broadcast = 0;
910 memset(txvq->stats.size_bins, 0,
911 sizeof(txvq->stats.size_bins[0]) * 8);
914 for (i = 0; i < dev->data->nb_rx_queues; i++) {
915 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
919 rxvq->stats.packets = 0;
920 rxvq->stats.bytes = 0;
921 rxvq->stats.errors = 0;
922 rxvq->stats.multicast = 0;
923 rxvq->stats.broadcast = 0;
924 memset(rxvq->stats.size_bins, 0,
925 sizeof(rxvq->stats.size_bins[0]) * 8);
930 virtio_set_hwaddr(struct virtio_hw *hw)
932 vtpci_write_dev_config(hw,
933 offsetof(struct virtio_net_config, mac),
934 &hw->mac_addr, ETHER_ADDR_LEN);
938 virtio_get_hwaddr(struct virtio_hw *hw)
940 if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) {
941 vtpci_read_dev_config(hw,
942 offsetof(struct virtio_net_config, mac),
943 &hw->mac_addr, ETHER_ADDR_LEN);
945 eth_random_addr(&hw->mac_addr[0]);
946 virtio_set_hwaddr(hw);
951 virtio_mac_table_set(struct virtio_hw *hw,
952 const struct virtio_net_ctrl_mac *uc,
953 const struct virtio_net_ctrl_mac *mc)
955 struct virtio_pmd_ctrl ctrl;
958 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
959 PMD_DRV_LOG(INFO, "host does not support mac table");
963 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
964 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET;
966 len[0] = uc->entries * ETHER_ADDR_LEN + sizeof(uc->entries);
967 memcpy(ctrl.data, uc, len[0]);
969 len[1] = mc->entries * ETHER_ADDR_LEN + sizeof(mc->entries);
970 memcpy(ctrl.data + len[0], mc, len[1]);
972 err = virtio_send_command(hw->cvq, &ctrl, len, 2);
974 PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err);
978 virtio_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac_addr,
979 uint32_t index, uint32_t vmdq __rte_unused)
981 struct virtio_hw *hw = dev->data->dev_private;
982 const struct ether_addr *addrs = dev->data->mac_addrs;
984 struct virtio_net_ctrl_mac *uc, *mc;
986 if (index >= VIRTIO_MAX_MAC_ADDRS) {
987 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
991 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
993 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
996 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
997 const struct ether_addr *addr
998 = (i == index) ? mac_addr : addrs + i;
999 struct virtio_net_ctrl_mac *tbl
1000 = is_multicast_ether_addr(addr) ? mc : uc;
1002 memcpy(&tbl->macs[tbl->entries++], addr, ETHER_ADDR_LEN);
1005 virtio_mac_table_set(hw, uc, mc);
1009 virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
1011 struct virtio_hw *hw = dev->data->dev_private;
1012 struct ether_addr *addrs = dev->data->mac_addrs;
1013 struct virtio_net_ctrl_mac *uc, *mc;
1016 if (index >= VIRTIO_MAX_MAC_ADDRS) {
1017 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
1021 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
1023 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
1026 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
1027 struct virtio_net_ctrl_mac *tbl;
1029 if (i == index || is_zero_ether_addr(addrs + i))
1032 tbl = is_multicast_ether_addr(addrs + i) ? mc : uc;
1033 memcpy(&tbl->macs[tbl->entries++], addrs + i, ETHER_ADDR_LEN);
1036 virtio_mac_table_set(hw, uc, mc);
1040 virtio_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr)
1042 struct virtio_hw *hw = dev->data->dev_private;
1044 memcpy(hw->mac_addr, mac_addr, ETHER_ADDR_LEN);
1046 /* Use atomic update if available */
1047 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
1048 struct virtio_pmd_ctrl ctrl;
1049 int len = ETHER_ADDR_LEN;
1051 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
1052 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET;
1054 memcpy(ctrl.data, mac_addr, ETHER_ADDR_LEN);
1055 virtio_send_command(hw->cvq, &ctrl, &len, 1);
1056 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC))
1057 virtio_set_hwaddr(hw);
1061 virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
1063 struct virtio_hw *hw = dev->data->dev_private;
1064 struct virtio_pmd_ctrl ctrl;
1067 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN))
1070 ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN;
1071 ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL;
1072 memcpy(ctrl.data, &vlan_id, sizeof(vlan_id));
1073 len = sizeof(vlan_id);
1075 return virtio_send_command(hw->cvq, &ctrl, &len, 1);
1079 virtio_negotiate_features(struct virtio_hw *hw, uint64_t req_features)
1081 uint64_t host_features;
1083 /* Prepare guest_features: feature that driver wants to support */
1084 PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %" PRIx64,
1087 /* Read device(host) feature bits */
1088 host_features = hw->vtpci_ops->get_features(hw);
1089 PMD_INIT_LOG(DEBUG, "host_features before negotiate = %" PRIx64,
1093 * Negotiate features: Subset of device feature bits are written back
1094 * guest feature bits.
1096 hw->guest_features = req_features;
1097 hw->guest_features = vtpci_negotiate_features(hw, host_features);
1098 PMD_INIT_LOG(DEBUG, "features after negotiate = %" PRIx64,
1099 hw->guest_features);
1102 if (!vtpci_with_feature(hw, VIRTIO_F_VERSION_1)) {
1104 "VIRTIO_F_VERSION_1 features is not enabled.");
1107 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_FEATURES_OK);
1108 if (!(vtpci_get_status(hw) & VIRTIO_CONFIG_STATUS_FEATURES_OK)) {
1110 "failed to set FEATURES_OK status!");
1115 hw->req_guest_features = req_features;
1121 * Process Virtio Config changed interrupt and call the callback
1122 * if link state changed.
1125 virtio_interrupt_handler(__rte_unused struct rte_intr_handle *handle,
1128 struct rte_eth_dev *dev = param;
1129 struct virtio_hw *hw = dev->data->dev_private;
1132 /* Read interrupt status which clears interrupt */
1133 isr = vtpci_isr(hw);
1134 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr);
1136 if (rte_intr_enable(&dev->pci_dev->intr_handle) < 0)
1137 PMD_DRV_LOG(ERR, "interrupt enable failed");
1139 if (isr & VIRTIO_PCI_ISR_CONFIG) {
1140 if (virtio_dev_link_update(dev, 0) == 0)
1141 _rte_eth_dev_callback_process(dev,
1142 RTE_ETH_EVENT_INTR_LSC, NULL);
1148 rx_func_get(struct rte_eth_dev *eth_dev)
1150 struct virtio_hw *hw = eth_dev->data->dev_private;
1151 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF))
1152 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts;
1154 eth_dev->rx_pkt_burst = &virtio_recv_pkts;
1157 /* reset device and renegotiate features if needed */
1159 virtio_init_device(struct rte_eth_dev *eth_dev, uint64_t req_features)
1161 struct virtio_hw *hw = eth_dev->data->dev_private;
1162 struct virtio_net_config *config;
1163 struct virtio_net_config local_config;
1164 struct rte_pci_device *pci_dev = eth_dev->pci_dev;
1167 /* Reset the device although not necessary at startup */
1170 /* Tell the host we've noticed this device. */
1171 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_ACK);
1173 /* Tell the host we've known how to drive the device. */
1174 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER);
1175 if (virtio_negotiate_features(hw, req_features) < 0)
1178 /* If host does not support status then disable LSC */
1179 if (!vtpci_with_feature(hw, VIRTIO_NET_F_STATUS))
1180 eth_dev->data->dev_flags &= ~RTE_ETH_DEV_INTR_LSC;
1182 eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC;
1184 rte_eth_copy_pci_info(eth_dev, pci_dev);
1186 rx_func_get(eth_dev);
1188 /* Setting up rx_header size for the device */
1189 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF) ||
1190 vtpci_with_feature(hw, VIRTIO_F_VERSION_1))
1191 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf);
1193 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr);
1195 /* Copy the permanent MAC address to: virtio_hw */
1196 virtio_get_hwaddr(hw);
1197 ether_addr_copy((struct ether_addr *) hw->mac_addr,
1198 ð_dev->data->mac_addrs[0]);
1200 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1201 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2],
1202 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]);
1204 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) {
1205 config = &local_config;
1207 vtpci_read_dev_config(hw,
1208 offsetof(struct virtio_net_config, mac),
1209 &config->mac, sizeof(config->mac));
1211 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1212 vtpci_read_dev_config(hw,
1213 offsetof(struct virtio_net_config, status),
1214 &config->status, sizeof(config->status));
1217 "VIRTIO_NET_F_STATUS is not supported");
1221 if (vtpci_with_feature(hw, VIRTIO_NET_F_MQ)) {
1222 vtpci_read_dev_config(hw,
1223 offsetof(struct virtio_net_config, max_virtqueue_pairs),
1224 &config->max_virtqueue_pairs,
1225 sizeof(config->max_virtqueue_pairs));
1228 "VIRTIO_NET_F_MQ is not supported");
1229 config->max_virtqueue_pairs = 1;
1232 hw->max_queue_pairs = config->max_virtqueue_pairs;
1234 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d",
1235 config->max_virtqueue_pairs);
1236 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status);
1238 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1239 config->mac[0], config->mac[1],
1240 config->mac[2], config->mac[3],
1241 config->mac[4], config->mac[5]);
1243 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=1");
1244 hw->max_queue_pairs = 1;
1247 ret = virtio_alloc_queues(eth_dev);
1252 PMD_INIT_LOG(DEBUG, "port %d vendorID=0x%x deviceID=0x%x",
1253 eth_dev->data->port_id, pci_dev->id.vendor_id,
1254 pci_dev->id.device_id);
1260 * This function is based on probe() function in virtio_pci.c
1261 * It returns 0 on success.
1264 eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
1266 struct virtio_hw *hw = eth_dev->data->dev_private;
1267 struct rte_pci_device *pci_dev;
1268 uint32_t dev_flags = RTE_ETH_DEV_DETACHABLE;
1271 RTE_BUILD_BUG_ON(RTE_PKTMBUF_HEADROOM < sizeof(struct virtio_net_hdr_mrg_rxbuf));
1273 eth_dev->dev_ops = &virtio_eth_dev_ops;
1274 eth_dev->tx_pkt_burst = &virtio_xmit_pkts;
1276 if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
1277 rx_func_get(eth_dev);
1281 /* Allocate memory for storing MAC addresses */
1282 eth_dev->data->mac_addrs = rte_zmalloc("virtio", VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN, 0);
1283 if (eth_dev->data->mac_addrs == NULL) {
1285 "Failed to allocate %d bytes needed to store MAC addresses",
1286 VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN);
1290 pci_dev = eth_dev->pci_dev;
1293 ret = vtpci_init(pci_dev, hw, &dev_flags);
1298 eth_dev->data->dev_flags = dev_flags;
1300 /* reset device and negotiate default features */
1301 ret = virtio_init_device(eth_dev, VIRTIO_PMD_DEFAULT_GUEST_FEATURES);
1305 /* Setup interrupt callback */
1306 if (eth_dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
1307 rte_intr_callback_register(&pci_dev->intr_handle,
1308 virtio_interrupt_handler, eth_dev);
1314 eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev)
1316 struct rte_pci_device *pci_dev;
1317 struct virtio_hw *hw = eth_dev->data->dev_private;
1319 PMD_INIT_FUNC_TRACE();
1321 if (rte_eal_process_type() == RTE_PROC_SECONDARY)
1324 if (hw->started == 1) {
1325 virtio_dev_stop(eth_dev);
1326 virtio_dev_close(eth_dev);
1328 pci_dev = eth_dev->pci_dev;
1330 eth_dev->dev_ops = NULL;
1331 eth_dev->tx_pkt_burst = NULL;
1332 eth_dev->rx_pkt_burst = NULL;
1334 rte_free(eth_dev->data->mac_addrs);
1335 eth_dev->data->mac_addrs = NULL;
1337 /* reset interrupt callback */
1338 if (eth_dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
1339 rte_intr_callback_unregister(&pci_dev->intr_handle,
1340 virtio_interrupt_handler,
1342 rte_eal_pci_unmap_device(pci_dev);
1344 PMD_INIT_LOG(DEBUG, "dev_uninit completed");
1349 static struct eth_driver rte_virtio_pmd = {
1352 .name = "net_virtio",
1354 .id_table = pci_id_virtio_map,
1355 .drv_flags = RTE_PCI_DRV_DETACHABLE,
1356 .probe = rte_eth_dev_pci_probe,
1357 .remove = rte_eth_dev_pci_remove,
1359 .eth_dev_init = eth_virtio_dev_init,
1360 .eth_dev_uninit = eth_virtio_dev_uninit,
1361 .dev_private_size = sizeof(struct virtio_hw),
1364 RTE_INIT(rte_virtio_pmd_init);
1366 rte_virtio_pmd_init(void)
1368 if (rte_eal_iopl_init() != 0) {
1369 PMD_INIT_LOG(ERR, "IOPL call failed - cannot use virtio PMD");
1373 rte_eal_pci_register(&rte_virtio_pmd.pci_drv);
1377 * Configure virtio device
1378 * It returns 0 on success.
1381 virtio_dev_configure(struct rte_eth_dev *dev)
1383 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
1384 struct virtio_hw *hw = dev->data->dev_private;
1385 uint64_t req_features;
1388 PMD_INIT_LOG(DEBUG, "configure");
1389 req_features = VIRTIO_PMD_DEFAULT_GUEST_FEATURES;
1390 if (rxmode->hw_ip_checksum)
1391 req_features |= (1ULL << VIRTIO_NET_F_GUEST_CSUM);
1392 if (rxmode->enable_lro)
1394 (1ULL << VIRTIO_NET_F_GUEST_TSO4) |
1395 (1ULL << VIRTIO_NET_F_GUEST_TSO6);
1397 /* if request features changed, reinit the device */
1398 if (req_features != hw->req_guest_features) {
1399 ret = virtio_init_device(dev, req_features);
1404 if (rxmode->hw_ip_checksum &&
1405 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM)) {
1407 "rx ip checksum not available on this host");
1411 if (rxmode->enable_lro &&
1412 (!vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) ||
1413 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4))) {
1415 "lro not available on this host");
1419 /* start control queue */
1420 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ))
1421 virtio_dev_cq_start(dev);
1423 hw->vlan_strip = rxmode->hw_vlan_strip;
1425 if (rxmode->hw_vlan_filter
1426 && !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
1428 "vlan filtering not available on this host");
1432 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
1433 if (vtpci_irq_config(hw, 0) == VIRTIO_MSI_NO_VECTOR) {
1434 PMD_DRV_LOG(ERR, "failed to set config vector");
1443 virtio_dev_start(struct rte_eth_dev *dev)
1445 uint16_t nb_queues, i;
1446 struct virtio_hw *hw = dev->data->dev_private;
1447 struct virtnet_rx *rxvq;
1448 struct virtnet_tx *txvq __rte_unused;
1450 /* check if lsc interrupt feature is enabled */
1451 if (dev->data->dev_conf.intr_conf.lsc) {
1452 if (!(dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)) {
1453 PMD_DRV_LOG(ERR, "link status not supported by host");
1457 if (rte_intr_enable(&dev->pci_dev->intr_handle) < 0) {
1458 PMD_DRV_LOG(ERR, "interrupt enable failed");
1463 /* Initialize Link state */
1464 virtio_dev_link_update(dev, 0);
1466 /* On restart after stop do not touch queues */
1470 /* Do final configuration before rx/tx engine starts */
1471 virtio_dev_rxtx_start(dev);
1472 vtpci_reinit_complete(hw);
1476 /*Notify the backend
1477 *Otherwise the tap backend might already stop its queue due to fullness.
1478 *vhost backend will have no chance to be waked up
1480 nb_queues = dev->data->nb_rx_queues;
1481 if (nb_queues > 1) {
1482 if (virtio_set_multiple_queues(dev, nb_queues) != 0)
1486 PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues);
1488 for (i = 0; i < nb_queues; i++) {
1489 rxvq = dev->data->rx_queues[i];
1490 virtqueue_notify(rxvq->vq);
1493 PMD_INIT_LOG(DEBUG, "Notified backend at initialization");
1495 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1496 rxvq = dev->data->rx_queues[i];
1497 VIRTQUEUE_DUMP(rxvq->vq);
1500 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1501 txvq = dev->data->tx_queues[i];
1502 VIRTQUEUE_DUMP(txvq->vq);
1508 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev)
1510 struct rte_mbuf *buf;
1511 int i, mbuf_num = 0;
1513 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1514 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
1517 "Before freeing rxq[%d] used and unused buf", i);
1518 VIRTQUEUE_DUMP(rxvq->vq);
1520 PMD_INIT_LOG(DEBUG, "rx_queues[%d]=%p", i, rxvq);
1521 while ((buf = virtqueue_detatch_unused(rxvq->vq)) != NULL) {
1522 rte_pktmbuf_free(buf);
1526 PMD_INIT_LOG(DEBUG, "free %d mbufs", mbuf_num);
1528 "After freeing rxq[%d] used and unused buf", i);
1529 VIRTQUEUE_DUMP(rxvq->vq);
1532 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1533 struct virtnet_tx *txvq = dev->data->tx_queues[i];
1536 "Before freeing txq[%d] used and unused bufs",
1538 VIRTQUEUE_DUMP(txvq->vq);
1541 while ((buf = virtqueue_detatch_unused(txvq->vq)) != NULL) {
1542 rte_pktmbuf_free(buf);
1546 PMD_INIT_LOG(DEBUG, "free %d mbufs", mbuf_num);
1548 "After freeing txq[%d] used and unused buf", i);
1549 VIRTQUEUE_DUMP(txvq->vq);
1554 * Stop device: disable interrupt and mark link down
1557 virtio_dev_stop(struct rte_eth_dev *dev)
1559 struct rte_eth_link link;
1561 PMD_INIT_LOG(DEBUG, "stop");
1563 if (dev->data->dev_conf.intr_conf.lsc)
1564 rte_intr_disable(&dev->pci_dev->intr_handle);
1566 memset(&link, 0, sizeof(link));
1567 virtio_dev_atomic_write_link_status(dev, &link);
1571 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete)
1573 struct rte_eth_link link, old;
1575 struct virtio_hw *hw = dev->data->dev_private;
1576 memset(&link, 0, sizeof(link));
1577 virtio_dev_atomic_read_link_status(dev, &link);
1579 link.link_duplex = ETH_LINK_FULL_DUPLEX;
1580 link.link_speed = SPEED_10G;
1582 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1583 PMD_INIT_LOG(DEBUG, "Get link status from hw");
1584 vtpci_read_dev_config(hw,
1585 offsetof(struct virtio_net_config, status),
1586 &status, sizeof(status));
1587 if ((status & VIRTIO_NET_S_LINK_UP) == 0) {
1588 link.link_status = ETH_LINK_DOWN;
1589 PMD_INIT_LOG(DEBUG, "Port %d is down",
1590 dev->data->port_id);
1592 link.link_status = ETH_LINK_UP;
1593 PMD_INIT_LOG(DEBUG, "Port %d is up",
1594 dev->data->port_id);
1597 link.link_status = ETH_LINK_UP;
1599 virtio_dev_atomic_write_link_status(dev, &link);
1601 return (old.link_status == link.link_status) ? -1 : 0;
1605 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
1608 struct virtio_hw *hw = dev->data->dev_private;
1611 dev_info->driver_name = dev->driver->pci_drv.driver.name;
1613 dev_info->driver_name = "virtio_user PMD";
1614 dev_info->max_rx_queues =
1615 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_RX_QUEUES);
1616 dev_info->max_tx_queues =
1617 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_TX_QUEUES);
1618 dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE;
1619 dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN;
1620 dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS;
1621 dev_info->default_txconf = (struct rte_eth_txconf) {
1622 .txq_flags = ETH_TXQ_FLAGS_NOOFFLOADS
1624 dev_info->rx_offload_capa =
1625 DEV_RX_OFFLOAD_TCP_CKSUM |
1626 DEV_RX_OFFLOAD_UDP_CKSUM |
1627 DEV_RX_OFFLOAD_TCP_LRO;
1628 dev_info->tx_offload_capa = 0;
1630 if (hw->guest_features & (1ULL << VIRTIO_NET_F_CSUM)) {
1631 dev_info->tx_offload_capa |=
1632 DEV_TX_OFFLOAD_UDP_CKSUM |
1633 DEV_TX_OFFLOAD_TCP_CKSUM;
1636 tso_mask = (1ULL << VIRTIO_NET_F_HOST_TSO4) |
1637 (1ULL << VIRTIO_NET_F_HOST_TSO6);
1638 if ((hw->guest_features & tso_mask) == tso_mask)
1639 dev_info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO;
1643 * It enables testpmd to collect per queue stats.
1646 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev,
1647 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx,
1648 __rte_unused uint8_t is_rx)
1653 RTE_PMD_EXPORT_NAME(net_virtio, __COUNTER__);
1654 RTE_PMD_REGISTER_PCI_TABLE(net_virtio, pci_id_virtio_map);