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
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18 * contributors may be used to endorse or promote products derived
19 * from this software without specific prior written permission.
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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24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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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(struct virtqueue *vq)
286 struct virtio_hw *hw;
291 hw->vtpci_ops->del_queue(hw, vq);
293 rte_free(vq->sw_ring);
298 int virtio_dev_queue_setup(struct rte_eth_dev *dev,
301 uint16_t vtpci_queue_idx,
303 unsigned int socket_id,
306 char vq_name[VIRTQUEUE_MAX_NAME_SZ];
307 char vq_hdr_name[VIRTQUEUE_MAX_NAME_SZ];
308 const struct rte_memzone *mz = NULL, *hdr_mz = NULL;
309 unsigned int vq_size, size;
310 struct virtio_hw *hw = dev->data->dev_private;
311 struct virtnet_rx *rxvq = NULL;
312 struct virtnet_tx *txvq = NULL;
313 struct virtnet_ctl *cvq = NULL;
314 struct virtqueue *vq;
315 size_t sz_hdr_mz = 0;
316 void *sw_ring = NULL;
319 PMD_INIT_LOG(DEBUG, "setting up queue: %u", vtpci_queue_idx);
322 * Read the virtqueue size from the Queue Size field
323 * Always power of 2 and if 0 virtqueue does not exist
325 vq_size = hw->vtpci_ops->get_queue_num(hw, vtpci_queue_idx);
326 PMD_INIT_LOG(DEBUG, "vq_size: %u nb_desc:%u", vq_size, nb_desc);
328 PMD_INIT_LOG(ERR, "virtqueue does not exist");
332 if (!rte_is_power_of_2(vq_size)) {
333 PMD_INIT_LOG(ERR, "virtqueue size is not powerof 2");
337 snprintf(vq_name, sizeof(vq_name), "port%d_vq%d",
338 dev->data->port_id, vtpci_queue_idx);
340 size = RTE_ALIGN_CEIL(sizeof(*vq) +
341 vq_size * sizeof(struct vq_desc_extra),
342 RTE_CACHE_LINE_SIZE);
343 if (queue_type == VTNET_TQ) {
345 * For each xmit packet, allocate a virtio_net_hdr
346 * and indirect ring elements
348 sz_hdr_mz = vq_size * sizeof(struct virtio_tx_region);
349 } else if (queue_type == VTNET_CQ) {
350 /* Allocate a page for control vq command, data and status */
351 sz_hdr_mz = PAGE_SIZE;
354 vq = rte_zmalloc_socket(vq_name, size, RTE_CACHE_LINE_SIZE, socket_id);
356 PMD_INIT_LOG(ERR, "can not allocate vq");
360 vq->vq_queue_index = vtpci_queue_idx;
361 vq->vq_nentries = vq_size;
363 if (nb_desc == 0 || nb_desc > vq_size)
365 vq->vq_free_cnt = nb_desc;
368 * Reserve a memzone for vring elements
370 size = vring_size(vq_size, VIRTIO_PCI_VRING_ALIGN);
371 vq->vq_ring_size = RTE_ALIGN_CEIL(size, VIRTIO_PCI_VRING_ALIGN);
372 PMD_INIT_LOG(DEBUG, "vring_size: %d, rounded_vring_size: %d",
373 size, vq->vq_ring_size);
375 mz = rte_memzone_reserve_aligned(vq_name, vq->vq_ring_size, socket_id,
376 0, VIRTIO_PCI_VRING_ALIGN);
378 if (rte_errno == EEXIST)
379 mz = rte_memzone_lookup(vq_name);
386 memset(mz->addr, 0, sizeof(mz->len));
388 vq->vq_ring_mem = mz->phys_addr;
389 vq->vq_ring_virt_mem = mz->addr;
390 PMD_INIT_LOG(DEBUG, "vq->vq_ring_mem: 0x%" PRIx64,
391 (uint64_t)mz->phys_addr);
392 PMD_INIT_LOG(DEBUG, "vq->vq_ring_virt_mem: 0x%" PRIx64,
393 (uint64_t)(uintptr_t)mz->addr);
396 snprintf(vq_hdr_name, sizeof(vq_hdr_name), "port%d_vq%d_hdr",
397 dev->data->port_id, vtpci_queue_idx);
398 hdr_mz = rte_memzone_reserve_aligned(vq_hdr_name, sz_hdr_mz,
400 RTE_CACHE_LINE_SIZE);
401 if (hdr_mz == NULL) {
402 if (rte_errno == EEXIST)
403 hdr_mz = rte_memzone_lookup(vq_hdr_name);
404 if (hdr_mz == NULL) {
411 if (queue_type == VTNET_RQ) {
412 size_t sz_sw = (RTE_PMD_VIRTIO_RX_MAX_BURST + vq_size) *
413 sizeof(vq->sw_ring[0]);
415 sw_ring = rte_zmalloc_socket("sw_ring", sz_sw,
416 RTE_CACHE_LINE_SIZE, socket_id);
418 PMD_INIT_LOG(ERR, "can not allocate RX soft ring");
423 vq->sw_ring = sw_ring;
426 rxvq->port_id = dev->data->port_id;
427 rxvq->queue_id = queue_idx;
430 } else if (queue_type == VTNET_TQ) {
433 txvq->port_id = dev->data->port_id;
434 txvq->queue_id = queue_idx;
436 txvq->virtio_net_hdr_mz = hdr_mz;
437 txvq->virtio_net_hdr_mem = hdr_mz->phys_addr;
440 } else if (queue_type == VTNET_CQ) {
444 cvq->virtio_net_hdr_mz = hdr_mz;
445 cvq->virtio_net_hdr_mem = hdr_mz->phys_addr;
446 memset(cvq->virtio_net_hdr_mz->addr, 0, PAGE_SIZE);
450 /* For virtio_user case (that is when dev->pci_dev is NULL), we use
451 * virtual address. And we need properly set _offset_, please see
452 * VIRTIO_MBUF_DATA_DMA_ADDR in virtqueue.h for more information.
455 vq->offset = offsetof(struct rte_mbuf, buf_physaddr);
457 vq->vq_ring_mem = (uintptr_t)mz->addr;
458 vq->offset = offsetof(struct rte_mbuf, buf_addr);
459 if (queue_type == VTNET_TQ)
460 txvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr;
461 else if (queue_type == VTNET_CQ)
462 cvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr;
465 if (queue_type == VTNET_TQ) {
466 struct virtio_tx_region *txr;
470 memset(txr, 0, vq_size * sizeof(*txr));
471 for (i = 0; i < vq_size; i++) {
472 struct vring_desc *start_dp = txr[i].tx_indir;
474 vring_desc_init(start_dp, RTE_DIM(txr[i].tx_indir));
476 /* first indirect descriptor is always the tx header */
477 start_dp->addr = txvq->virtio_net_hdr_mem
479 + offsetof(struct virtio_tx_region, tx_hdr);
481 start_dp->len = hw->vtnet_hdr_size;
482 start_dp->flags = VRING_DESC_F_NEXT;
486 if (hw->vtpci_ops->setup_queue(hw, vq) < 0) {
487 PMD_INIT_LOG(ERR, "setup_queue failed");
488 virtio_dev_queue_release(vq);
497 rte_memzone_free(hdr_mz);
498 rte_memzone_free(mz);
505 virtio_dev_cq_queue_setup(struct rte_eth_dev *dev, uint16_t vtpci_queue_idx,
508 struct virtnet_ctl *cvq;
510 struct virtio_hw *hw = dev->data->dev_private;
512 PMD_INIT_FUNC_TRACE();
513 ret = virtio_dev_queue_setup(dev, VTNET_CQ, VTNET_SQ_CQ_QUEUE_IDX,
514 vtpci_queue_idx, 0, socket_id, (void **)&cvq);
516 PMD_INIT_LOG(ERR, "control vq initialization failed");
525 virtio_free_queues(struct rte_eth_dev *dev)
529 for (i = 0; i < dev->data->nb_rx_queues; i++)
530 virtio_dev_rx_queue_release(dev->data->rx_queues[i]);
532 dev->data->nb_rx_queues = 0;
534 for (i = 0; i < dev->data->nb_tx_queues; i++)
535 virtio_dev_tx_queue_release(dev->data->tx_queues[i]);
537 dev->data->nb_tx_queues = 0;
541 virtio_dev_close(struct rte_eth_dev *dev)
543 struct virtio_hw *hw = dev->data->dev_private;
545 PMD_INIT_LOG(DEBUG, "virtio_dev_close");
548 virtio_dev_queue_release(hw->cvq->vq);
551 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
552 vtpci_irq_config(hw, VIRTIO_MSI_NO_VECTOR);
555 virtio_dev_free_mbufs(dev);
556 virtio_free_queues(dev);
560 virtio_dev_promiscuous_enable(struct rte_eth_dev *dev)
562 struct virtio_hw *hw = dev->data->dev_private;
563 struct virtio_pmd_ctrl ctrl;
567 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
568 PMD_INIT_LOG(INFO, "host does not support rx control\n");
572 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
573 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
577 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
579 PMD_INIT_LOG(ERR, "Failed to enable promisc");
583 virtio_dev_promiscuous_disable(struct rte_eth_dev *dev)
585 struct virtio_hw *hw = dev->data->dev_private;
586 struct virtio_pmd_ctrl ctrl;
590 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
591 PMD_INIT_LOG(INFO, "host does not support rx control\n");
595 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
596 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
600 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
602 PMD_INIT_LOG(ERR, "Failed to disable promisc");
606 virtio_dev_allmulticast_enable(struct rte_eth_dev *dev)
608 struct virtio_hw *hw = dev->data->dev_private;
609 struct virtio_pmd_ctrl ctrl;
613 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
614 PMD_INIT_LOG(INFO, "host does not support rx control\n");
618 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
619 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
623 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
625 PMD_INIT_LOG(ERR, "Failed to enable allmulticast");
629 virtio_dev_allmulticast_disable(struct rte_eth_dev *dev)
631 struct virtio_hw *hw = dev->data->dev_private;
632 struct virtio_pmd_ctrl ctrl;
636 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
637 PMD_INIT_LOG(INFO, "host does not support rx control\n");
641 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
642 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
646 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
648 PMD_INIT_LOG(ERR, "Failed to disable allmulticast");
651 #define VLAN_TAG_LEN 4 /* 802.3ac tag (not DMA'd) */
653 virtio_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
655 struct virtio_hw *hw = dev->data->dev_private;
656 uint32_t ether_hdr_len = ETHER_HDR_LEN + VLAN_TAG_LEN +
658 uint32_t frame_size = mtu + ether_hdr_len;
660 if (mtu < ETHER_MIN_MTU || frame_size > VIRTIO_MAX_RX_PKTLEN) {
661 PMD_INIT_LOG(ERR, "MTU should be between %d and %d\n",
662 ETHER_MIN_MTU, VIRTIO_MAX_RX_PKTLEN - ether_hdr_len);
669 * dev_ops for virtio, bare necessities for basic operation
671 static const struct eth_dev_ops virtio_eth_dev_ops = {
672 .dev_configure = virtio_dev_configure,
673 .dev_start = virtio_dev_start,
674 .dev_stop = virtio_dev_stop,
675 .dev_close = virtio_dev_close,
676 .promiscuous_enable = virtio_dev_promiscuous_enable,
677 .promiscuous_disable = virtio_dev_promiscuous_disable,
678 .allmulticast_enable = virtio_dev_allmulticast_enable,
679 .allmulticast_disable = virtio_dev_allmulticast_disable,
680 .mtu_set = virtio_mtu_set,
681 .dev_infos_get = virtio_dev_info_get,
682 .stats_get = virtio_dev_stats_get,
683 .xstats_get = virtio_dev_xstats_get,
684 .xstats_get_names = virtio_dev_xstats_get_names,
685 .stats_reset = virtio_dev_stats_reset,
686 .xstats_reset = virtio_dev_stats_reset,
687 .link_update = virtio_dev_link_update,
688 .rx_queue_setup = virtio_dev_rx_queue_setup,
689 .rx_queue_release = virtio_dev_rx_queue_release,
690 .tx_queue_setup = virtio_dev_tx_queue_setup,
691 .tx_queue_release = virtio_dev_tx_queue_release,
692 /* collect stats per queue */
693 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set,
694 .vlan_filter_set = virtio_vlan_filter_set,
695 .mac_addr_add = virtio_mac_addr_add,
696 .mac_addr_remove = virtio_mac_addr_remove,
697 .mac_addr_set = virtio_mac_addr_set,
701 virtio_dev_atomic_read_link_status(struct rte_eth_dev *dev,
702 struct rte_eth_link *link)
704 struct rte_eth_link *dst = link;
705 struct rte_eth_link *src = &(dev->data->dev_link);
707 if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
708 *(uint64_t *)src) == 0)
715 * Atomically writes the link status information into global
716 * structure rte_eth_dev.
719 * - Pointer to the structure rte_eth_dev to read from.
720 * - Pointer to the buffer to be saved with the link status.
723 * - On success, zero.
724 * - On failure, negative value.
727 virtio_dev_atomic_write_link_status(struct rte_eth_dev *dev,
728 struct rte_eth_link *link)
730 struct rte_eth_link *dst = &(dev->data->dev_link);
731 struct rte_eth_link *src = link;
733 if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
734 *(uint64_t *)src) == 0)
741 virtio_update_stats(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
745 for (i = 0; i < dev->data->nb_tx_queues; i++) {
746 const struct virtnet_tx *txvq = dev->data->tx_queues[i];
750 stats->opackets += txvq->stats.packets;
751 stats->obytes += txvq->stats.bytes;
752 stats->oerrors += txvq->stats.errors;
754 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
755 stats->q_opackets[i] = txvq->stats.packets;
756 stats->q_obytes[i] = txvq->stats.bytes;
760 for (i = 0; i < dev->data->nb_rx_queues; i++) {
761 const struct virtnet_rx *rxvq = dev->data->rx_queues[i];
765 stats->ipackets += rxvq->stats.packets;
766 stats->ibytes += rxvq->stats.bytes;
767 stats->ierrors += rxvq->stats.errors;
769 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
770 stats->q_ipackets[i] = rxvq->stats.packets;
771 stats->q_ibytes[i] = rxvq->stats.bytes;
775 stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed;
778 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev,
779 struct rte_eth_xstat_name *xstats_names,
780 __rte_unused unsigned limit)
786 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS +
787 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS;
789 if (xstats_names != NULL) {
790 /* Note: limit checked in rte_eth_xstats_names() */
792 for (i = 0; i < dev->data->nb_rx_queues; i++) {
793 struct virtqueue *rxvq = dev->data->rx_queues[i];
796 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) {
797 snprintf(xstats_names[count].name,
798 sizeof(xstats_names[count].name),
800 rte_virtio_rxq_stat_strings[t].name);
805 for (i = 0; i < dev->data->nb_tx_queues; i++) {
806 struct virtqueue *txvq = dev->data->tx_queues[i];
809 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) {
810 snprintf(xstats_names[count].name,
811 sizeof(xstats_names[count].name),
813 rte_virtio_txq_stat_strings[t].name);
823 virtio_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats,
829 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS +
830 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS;
835 for (i = 0; i < dev->data->nb_rx_queues; i++) {
836 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
843 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) {
844 xstats[count].value = *(uint64_t *)(((char *)rxvq) +
845 rte_virtio_rxq_stat_strings[t].offset);
850 for (i = 0; i < dev->data->nb_tx_queues; i++) {
851 struct virtnet_tx *txvq = dev->data->tx_queues[i];
858 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) {
859 xstats[count].value = *(uint64_t *)(((char *)txvq) +
860 rte_virtio_txq_stat_strings[t].offset);
869 virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
871 virtio_update_stats(dev, stats);
875 virtio_dev_stats_reset(struct rte_eth_dev *dev)
879 for (i = 0; i < dev->data->nb_tx_queues; i++) {
880 struct virtnet_tx *txvq = dev->data->tx_queues[i];
884 txvq->stats.packets = 0;
885 txvq->stats.bytes = 0;
886 txvq->stats.errors = 0;
887 txvq->stats.multicast = 0;
888 txvq->stats.broadcast = 0;
889 memset(txvq->stats.size_bins, 0,
890 sizeof(txvq->stats.size_bins[0]) * 8);
893 for (i = 0; i < dev->data->nb_rx_queues; i++) {
894 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
898 rxvq->stats.packets = 0;
899 rxvq->stats.bytes = 0;
900 rxvq->stats.errors = 0;
901 rxvq->stats.multicast = 0;
902 rxvq->stats.broadcast = 0;
903 memset(rxvq->stats.size_bins, 0,
904 sizeof(rxvq->stats.size_bins[0]) * 8);
909 virtio_set_hwaddr(struct virtio_hw *hw)
911 vtpci_write_dev_config(hw,
912 offsetof(struct virtio_net_config, mac),
913 &hw->mac_addr, ETHER_ADDR_LEN);
917 virtio_get_hwaddr(struct virtio_hw *hw)
919 if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) {
920 vtpci_read_dev_config(hw,
921 offsetof(struct virtio_net_config, mac),
922 &hw->mac_addr, ETHER_ADDR_LEN);
924 eth_random_addr(&hw->mac_addr[0]);
925 virtio_set_hwaddr(hw);
930 virtio_mac_table_set(struct virtio_hw *hw,
931 const struct virtio_net_ctrl_mac *uc,
932 const struct virtio_net_ctrl_mac *mc)
934 struct virtio_pmd_ctrl ctrl;
937 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
938 PMD_DRV_LOG(INFO, "host does not support mac table");
942 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
943 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET;
945 len[0] = uc->entries * ETHER_ADDR_LEN + sizeof(uc->entries);
946 memcpy(ctrl.data, uc, len[0]);
948 len[1] = mc->entries * ETHER_ADDR_LEN + sizeof(mc->entries);
949 memcpy(ctrl.data + len[0], mc, len[1]);
951 err = virtio_send_command(hw->cvq, &ctrl, len, 2);
953 PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err);
957 virtio_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac_addr,
958 uint32_t index, uint32_t vmdq __rte_unused)
960 struct virtio_hw *hw = dev->data->dev_private;
961 const struct ether_addr *addrs = dev->data->mac_addrs;
963 struct virtio_net_ctrl_mac *uc, *mc;
965 if (index >= VIRTIO_MAX_MAC_ADDRS) {
966 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
970 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
972 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
975 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
976 const struct ether_addr *addr
977 = (i == index) ? mac_addr : addrs + i;
978 struct virtio_net_ctrl_mac *tbl
979 = is_multicast_ether_addr(addr) ? mc : uc;
981 memcpy(&tbl->macs[tbl->entries++], addr, ETHER_ADDR_LEN);
984 virtio_mac_table_set(hw, uc, mc);
988 virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
990 struct virtio_hw *hw = dev->data->dev_private;
991 struct ether_addr *addrs = dev->data->mac_addrs;
992 struct virtio_net_ctrl_mac *uc, *mc;
995 if (index >= VIRTIO_MAX_MAC_ADDRS) {
996 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
1000 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
1002 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
1005 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
1006 struct virtio_net_ctrl_mac *tbl;
1008 if (i == index || is_zero_ether_addr(addrs + i))
1011 tbl = is_multicast_ether_addr(addrs + i) ? mc : uc;
1012 memcpy(&tbl->macs[tbl->entries++], addrs + i, ETHER_ADDR_LEN);
1015 virtio_mac_table_set(hw, uc, mc);
1019 virtio_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr)
1021 struct virtio_hw *hw = dev->data->dev_private;
1023 memcpy(hw->mac_addr, mac_addr, ETHER_ADDR_LEN);
1025 /* Use atomic update if available */
1026 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
1027 struct virtio_pmd_ctrl ctrl;
1028 int len = ETHER_ADDR_LEN;
1030 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
1031 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET;
1033 memcpy(ctrl.data, mac_addr, ETHER_ADDR_LEN);
1034 virtio_send_command(hw->cvq, &ctrl, &len, 1);
1035 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC))
1036 virtio_set_hwaddr(hw);
1040 virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
1042 struct virtio_hw *hw = dev->data->dev_private;
1043 struct virtio_pmd_ctrl ctrl;
1046 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN))
1049 ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN;
1050 ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL;
1051 memcpy(ctrl.data, &vlan_id, sizeof(vlan_id));
1052 len = sizeof(vlan_id);
1054 return virtio_send_command(hw->cvq, &ctrl, &len, 1);
1058 virtio_negotiate_features(struct virtio_hw *hw, uint64_t req_features)
1060 uint64_t host_features;
1062 /* Prepare guest_features: feature that driver wants to support */
1063 PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %" PRIx64,
1066 /* Read device(host) feature bits */
1067 host_features = hw->vtpci_ops->get_features(hw);
1068 PMD_INIT_LOG(DEBUG, "host_features before negotiate = %" PRIx64,
1072 * Negotiate features: Subset of device feature bits are written back
1073 * guest feature bits.
1075 hw->guest_features = req_features;
1076 hw->guest_features = vtpci_negotiate_features(hw, host_features);
1077 PMD_INIT_LOG(DEBUG, "features after negotiate = %" PRIx64,
1078 hw->guest_features);
1081 if (!vtpci_with_feature(hw, VIRTIO_F_VERSION_1)) {
1083 "VIRTIO_F_VERSION_1 features is not enabled.");
1086 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_FEATURES_OK);
1087 if (!(vtpci_get_status(hw) & VIRTIO_CONFIG_STATUS_FEATURES_OK)) {
1089 "failed to set FEATURES_OK status!");
1094 hw->req_guest_features = req_features;
1100 * Process Virtio Config changed interrupt and call the callback
1101 * if link state changed.
1104 virtio_interrupt_handler(__rte_unused struct rte_intr_handle *handle,
1107 struct rte_eth_dev *dev = param;
1108 struct virtio_hw *hw = dev->data->dev_private;
1111 /* Read interrupt status which clears interrupt */
1112 isr = vtpci_isr(hw);
1113 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr);
1115 if (rte_intr_enable(&dev->pci_dev->intr_handle) < 0)
1116 PMD_DRV_LOG(ERR, "interrupt enable failed");
1118 if (isr & VIRTIO_PCI_ISR_CONFIG) {
1119 if (virtio_dev_link_update(dev, 0) == 0)
1120 _rte_eth_dev_callback_process(dev,
1121 RTE_ETH_EVENT_INTR_LSC, NULL);
1127 rx_func_get(struct rte_eth_dev *eth_dev)
1129 struct virtio_hw *hw = eth_dev->data->dev_private;
1130 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF))
1131 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts;
1133 eth_dev->rx_pkt_burst = &virtio_recv_pkts;
1136 /* reset device and renegotiate features if needed */
1138 virtio_init_device(struct rte_eth_dev *eth_dev, uint64_t req_features)
1140 struct virtio_hw *hw = eth_dev->data->dev_private;
1141 struct virtio_net_config *config;
1142 struct virtio_net_config local_config;
1143 struct rte_pci_device *pci_dev = eth_dev->pci_dev;
1145 /* Reset the device although not necessary at startup */
1148 /* Tell the host we've noticed this device. */
1149 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_ACK);
1151 /* Tell the host we've known how to drive the device. */
1152 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER);
1153 if (virtio_negotiate_features(hw, req_features) < 0)
1156 /* If host does not support status then disable LSC */
1157 if (!vtpci_with_feature(hw, VIRTIO_NET_F_STATUS))
1158 eth_dev->data->dev_flags &= ~RTE_ETH_DEV_INTR_LSC;
1160 eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC;
1162 rte_eth_copy_pci_info(eth_dev, pci_dev);
1164 rx_func_get(eth_dev);
1166 /* Setting up rx_header size for the device */
1167 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF) ||
1168 vtpci_with_feature(hw, VIRTIO_F_VERSION_1))
1169 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf);
1171 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr);
1173 /* Copy the permanent MAC address to: virtio_hw */
1174 virtio_get_hwaddr(hw);
1175 ether_addr_copy((struct ether_addr *) hw->mac_addr,
1176 ð_dev->data->mac_addrs[0]);
1178 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1179 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2],
1180 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]);
1182 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) {
1183 config = &local_config;
1185 vtpci_read_dev_config(hw,
1186 offsetof(struct virtio_net_config, mac),
1187 &config->mac, sizeof(config->mac));
1189 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1190 vtpci_read_dev_config(hw,
1191 offsetof(struct virtio_net_config, status),
1192 &config->status, sizeof(config->status));
1195 "VIRTIO_NET_F_STATUS is not supported");
1199 if (vtpci_with_feature(hw, VIRTIO_NET_F_MQ)) {
1200 vtpci_read_dev_config(hw,
1201 offsetof(struct virtio_net_config, max_virtqueue_pairs),
1202 &config->max_virtqueue_pairs,
1203 sizeof(config->max_virtqueue_pairs));
1206 "VIRTIO_NET_F_MQ is not supported");
1207 config->max_virtqueue_pairs = 1;
1210 hw->max_queue_pairs = config->max_virtqueue_pairs;
1212 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d",
1213 config->max_virtqueue_pairs);
1214 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status);
1216 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1217 config->mac[0], config->mac[1],
1218 config->mac[2], config->mac[3],
1219 config->mac[4], config->mac[5]);
1221 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=1");
1222 hw->max_queue_pairs = 1;
1226 PMD_INIT_LOG(DEBUG, "port %d vendorID=0x%x deviceID=0x%x",
1227 eth_dev->data->port_id, pci_dev->id.vendor_id,
1228 pci_dev->id.device_id);
1234 * This function is based on probe() function in virtio_pci.c
1235 * It returns 0 on success.
1238 eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
1240 struct virtio_hw *hw = eth_dev->data->dev_private;
1241 struct rte_pci_device *pci_dev;
1242 uint32_t dev_flags = RTE_ETH_DEV_DETACHABLE;
1245 RTE_BUILD_BUG_ON(RTE_PKTMBUF_HEADROOM < sizeof(struct virtio_net_hdr_mrg_rxbuf));
1247 eth_dev->dev_ops = &virtio_eth_dev_ops;
1248 eth_dev->tx_pkt_burst = &virtio_xmit_pkts;
1250 if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
1251 rx_func_get(eth_dev);
1255 /* Allocate memory for storing MAC addresses */
1256 eth_dev->data->mac_addrs = rte_zmalloc("virtio", VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN, 0);
1257 if (eth_dev->data->mac_addrs == NULL) {
1259 "Failed to allocate %d bytes needed to store MAC addresses",
1260 VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN);
1264 pci_dev = eth_dev->pci_dev;
1267 ret = vtpci_init(pci_dev, hw, &dev_flags);
1272 eth_dev->data->dev_flags = dev_flags;
1274 /* reset device and negotiate default features */
1275 ret = virtio_init_device(eth_dev, VIRTIO_PMD_DEFAULT_GUEST_FEATURES);
1279 /* Setup interrupt callback */
1280 if (eth_dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
1281 rte_intr_callback_register(&pci_dev->intr_handle,
1282 virtio_interrupt_handler, eth_dev);
1288 eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev)
1290 struct rte_pci_device *pci_dev;
1291 struct virtio_hw *hw = eth_dev->data->dev_private;
1293 PMD_INIT_FUNC_TRACE();
1295 if (rte_eal_process_type() == RTE_PROC_SECONDARY)
1298 if (hw->started == 1) {
1299 virtio_dev_stop(eth_dev);
1300 virtio_dev_close(eth_dev);
1302 pci_dev = eth_dev->pci_dev;
1304 eth_dev->dev_ops = NULL;
1305 eth_dev->tx_pkt_burst = NULL;
1306 eth_dev->rx_pkt_burst = NULL;
1308 rte_free(eth_dev->data->mac_addrs);
1309 eth_dev->data->mac_addrs = NULL;
1311 /* reset interrupt callback */
1312 if (eth_dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
1313 rte_intr_callback_unregister(&pci_dev->intr_handle,
1314 virtio_interrupt_handler,
1316 rte_eal_pci_unmap_device(pci_dev);
1318 PMD_INIT_LOG(DEBUG, "dev_uninit completed");
1323 static struct eth_driver rte_virtio_pmd = {
1326 .name = "net_virtio",
1328 .id_table = pci_id_virtio_map,
1329 .drv_flags = RTE_PCI_DRV_DETACHABLE,
1330 .probe = rte_eth_dev_pci_probe,
1331 .remove = rte_eth_dev_pci_remove,
1333 .eth_dev_init = eth_virtio_dev_init,
1334 .eth_dev_uninit = eth_virtio_dev_uninit,
1335 .dev_private_size = sizeof(struct virtio_hw),
1338 RTE_INIT(rte_virtio_pmd_init);
1340 rte_virtio_pmd_init(void)
1342 if (rte_eal_iopl_init() != 0) {
1343 PMD_INIT_LOG(ERR, "IOPL call failed - cannot use virtio PMD");
1347 rte_eal_pci_register(&rte_virtio_pmd.pci_drv);
1351 * Configure virtio device
1352 * It returns 0 on success.
1355 virtio_dev_configure(struct rte_eth_dev *dev)
1357 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
1358 struct virtio_hw *hw = dev->data->dev_private;
1359 uint64_t req_features;
1362 PMD_INIT_LOG(DEBUG, "configure");
1363 req_features = VIRTIO_PMD_DEFAULT_GUEST_FEATURES;
1364 if (rxmode->hw_ip_checksum)
1365 req_features |= (1ULL << VIRTIO_NET_F_GUEST_CSUM);
1366 if (rxmode->enable_lro)
1368 (1ULL << VIRTIO_NET_F_GUEST_TSO4) |
1369 (1ULL << VIRTIO_NET_F_GUEST_TSO6);
1371 /* if request features changed, reinit the device */
1372 if (req_features != hw->req_guest_features) {
1373 ret = virtio_init_device(dev, req_features);
1378 if (rxmode->hw_ip_checksum &&
1379 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM)) {
1381 "rx ip checksum not available on this host");
1385 if (rxmode->enable_lro &&
1386 (!vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) ||
1387 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4))) {
1389 "lro not available on this host");
1393 /* Setup and start control queue */
1394 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) {
1395 ret = virtio_dev_cq_queue_setup(dev,
1396 hw->max_queue_pairs * 2,
1400 virtio_dev_cq_start(dev);
1403 hw->vlan_strip = rxmode->hw_vlan_strip;
1405 if (rxmode->hw_vlan_filter
1406 && !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
1408 "vlan filtering not available on this host");
1412 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
1413 if (vtpci_irq_config(hw, 0) == VIRTIO_MSI_NO_VECTOR) {
1414 PMD_DRV_LOG(ERR, "failed to set config vector");
1423 virtio_dev_start(struct rte_eth_dev *dev)
1425 uint16_t nb_queues, i;
1426 struct virtio_hw *hw = dev->data->dev_private;
1427 struct virtnet_rx *rxvq;
1428 struct virtnet_tx *txvq __rte_unused;
1430 /* check if lsc interrupt feature is enabled */
1431 if (dev->data->dev_conf.intr_conf.lsc) {
1432 if (!(dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)) {
1433 PMD_DRV_LOG(ERR, "link status not supported by host");
1437 if (rte_intr_enable(&dev->pci_dev->intr_handle) < 0) {
1438 PMD_DRV_LOG(ERR, "interrupt enable failed");
1443 /* Initialize Link state */
1444 virtio_dev_link_update(dev, 0);
1446 /* On restart after stop do not touch queues */
1450 /* Do final configuration before rx/tx engine starts */
1451 virtio_dev_rxtx_start(dev);
1452 vtpci_reinit_complete(hw);
1456 /*Notify the backend
1457 *Otherwise the tap backend might already stop its queue due to fullness.
1458 *vhost backend will have no chance to be waked up
1460 nb_queues = dev->data->nb_rx_queues;
1461 if (nb_queues > 1) {
1462 if (virtio_set_multiple_queues(dev, nb_queues) != 0)
1466 PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues);
1468 for (i = 0; i < nb_queues; i++) {
1469 rxvq = dev->data->rx_queues[i];
1470 virtqueue_notify(rxvq->vq);
1473 PMD_INIT_LOG(DEBUG, "Notified backend at initialization");
1475 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1476 rxvq = dev->data->rx_queues[i];
1477 VIRTQUEUE_DUMP(rxvq->vq);
1480 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1481 txvq = dev->data->tx_queues[i];
1482 VIRTQUEUE_DUMP(txvq->vq);
1488 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev)
1490 struct rte_mbuf *buf;
1491 int i, mbuf_num = 0;
1493 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1494 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
1497 "Before freeing rxq[%d] used and unused buf", i);
1498 VIRTQUEUE_DUMP(rxvq->vq);
1500 PMD_INIT_LOG(DEBUG, "rx_queues[%d]=%p", i, rxvq);
1501 while ((buf = virtqueue_detatch_unused(rxvq->vq)) != NULL) {
1502 rte_pktmbuf_free(buf);
1506 PMD_INIT_LOG(DEBUG, "free %d mbufs", mbuf_num);
1508 "After freeing rxq[%d] used and unused buf", i);
1509 VIRTQUEUE_DUMP(rxvq->vq);
1512 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1513 struct virtnet_tx *txvq = dev->data->tx_queues[i];
1516 "Before freeing txq[%d] used and unused bufs",
1518 VIRTQUEUE_DUMP(txvq->vq);
1521 while ((buf = virtqueue_detatch_unused(txvq->vq)) != NULL) {
1522 rte_pktmbuf_free(buf);
1526 PMD_INIT_LOG(DEBUG, "free %d mbufs", mbuf_num);
1528 "After freeing txq[%d] used and unused buf", i);
1529 VIRTQUEUE_DUMP(txvq->vq);
1534 * Stop device: disable interrupt and mark link down
1537 virtio_dev_stop(struct rte_eth_dev *dev)
1539 struct rte_eth_link link;
1541 PMD_INIT_LOG(DEBUG, "stop");
1543 if (dev->data->dev_conf.intr_conf.lsc)
1544 rte_intr_disable(&dev->pci_dev->intr_handle);
1546 memset(&link, 0, sizeof(link));
1547 virtio_dev_atomic_write_link_status(dev, &link);
1551 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete)
1553 struct rte_eth_link link, old;
1555 struct virtio_hw *hw = dev->data->dev_private;
1556 memset(&link, 0, sizeof(link));
1557 virtio_dev_atomic_read_link_status(dev, &link);
1559 link.link_duplex = ETH_LINK_FULL_DUPLEX;
1560 link.link_speed = SPEED_10G;
1562 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1563 PMD_INIT_LOG(DEBUG, "Get link status from hw");
1564 vtpci_read_dev_config(hw,
1565 offsetof(struct virtio_net_config, status),
1566 &status, sizeof(status));
1567 if ((status & VIRTIO_NET_S_LINK_UP) == 0) {
1568 link.link_status = ETH_LINK_DOWN;
1569 PMD_INIT_LOG(DEBUG, "Port %d is down",
1570 dev->data->port_id);
1572 link.link_status = ETH_LINK_UP;
1573 PMD_INIT_LOG(DEBUG, "Port %d is up",
1574 dev->data->port_id);
1577 link.link_status = ETH_LINK_UP;
1579 virtio_dev_atomic_write_link_status(dev, &link);
1581 return (old.link_status == link.link_status) ? -1 : 0;
1585 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
1588 struct virtio_hw *hw = dev->data->dev_private;
1591 dev_info->driver_name = dev->driver->pci_drv.driver.name;
1593 dev_info->driver_name = "virtio_user PMD";
1594 dev_info->max_rx_queues =
1595 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_RX_QUEUES);
1596 dev_info->max_tx_queues =
1597 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_TX_QUEUES);
1598 dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE;
1599 dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN;
1600 dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS;
1601 dev_info->default_txconf = (struct rte_eth_txconf) {
1602 .txq_flags = ETH_TXQ_FLAGS_NOOFFLOADS
1604 dev_info->rx_offload_capa =
1605 DEV_RX_OFFLOAD_TCP_CKSUM |
1606 DEV_RX_OFFLOAD_UDP_CKSUM |
1607 DEV_RX_OFFLOAD_TCP_LRO;
1608 dev_info->tx_offload_capa = 0;
1610 if (hw->guest_features & (1ULL << VIRTIO_NET_F_CSUM)) {
1611 dev_info->tx_offload_capa |=
1612 DEV_TX_OFFLOAD_UDP_CKSUM |
1613 DEV_TX_OFFLOAD_TCP_CKSUM;
1616 tso_mask = (1ULL << VIRTIO_NET_F_HOST_TSO4) |
1617 (1ULL << VIRTIO_NET_F_HOST_TSO6);
1618 if ((hw->guest_features & tso_mask) == tso_mask)
1619 dev_info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO;
1623 * It enables testpmd to collect per queue stats.
1626 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev,
1627 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx,
1628 __rte_unused uint8_t is_rx)
1633 RTE_PMD_EXPORT_NAME(net_virtio, __COUNTER__);
1634 RTE_PMD_REGISTER_PCI_TABLE(net_virtio, pci_id_virtio_map);