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
17 * * Neither the name of Intel Corporation nor the names of its
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
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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]))
155 struct virtio_hw_internal virtio_hw_internal[RTE_MAX_ETHPORTS];
158 virtio_send_command(struct virtnet_ctl *cvq, struct virtio_pmd_ctrl *ctrl,
159 int *dlen, int pkt_num)
163 virtio_net_ctrl_ack status = ~0;
164 struct virtio_pmd_ctrl result;
165 struct virtqueue *vq;
167 ctrl->status = status;
169 if (!cvq || !cvq->vq) {
170 PMD_INIT_LOG(ERR, "Control queue is not supported.");
174 head = vq->vq_desc_head_idx;
176 PMD_INIT_LOG(DEBUG, "vq->vq_desc_head_idx = %d, status = %d, "
177 "vq->hw->cvq = %p vq = %p",
178 vq->vq_desc_head_idx, status, vq->hw->cvq, vq);
180 if ((vq->vq_free_cnt < ((uint32_t)pkt_num + 2)) || (pkt_num < 1))
183 memcpy(cvq->virtio_net_hdr_mz->addr, ctrl,
184 sizeof(struct virtio_pmd_ctrl));
187 * Format is enforced in qemu code:
188 * One TX packet for header;
189 * At least one TX packet per argument;
190 * One RX packet for ACK.
192 vq->vq_ring.desc[head].flags = VRING_DESC_F_NEXT;
193 vq->vq_ring.desc[head].addr = cvq->virtio_net_hdr_mem;
194 vq->vq_ring.desc[head].len = sizeof(struct virtio_net_ctrl_hdr);
196 i = vq->vq_ring.desc[head].next;
198 for (k = 0; k < pkt_num; k++) {
199 vq->vq_ring.desc[i].flags = VRING_DESC_F_NEXT;
200 vq->vq_ring.desc[i].addr = cvq->virtio_net_hdr_mem
201 + sizeof(struct virtio_net_ctrl_hdr)
202 + sizeof(ctrl->status) + sizeof(uint8_t)*sum;
203 vq->vq_ring.desc[i].len = dlen[k];
206 i = vq->vq_ring.desc[i].next;
209 vq->vq_ring.desc[i].flags = VRING_DESC_F_WRITE;
210 vq->vq_ring.desc[i].addr = cvq->virtio_net_hdr_mem
211 + sizeof(struct virtio_net_ctrl_hdr);
212 vq->vq_ring.desc[i].len = sizeof(ctrl->status);
215 vq->vq_desc_head_idx = vq->vq_ring.desc[i].next;
217 vq_update_avail_ring(vq, head);
218 vq_update_avail_idx(vq);
220 PMD_INIT_LOG(DEBUG, "vq->vq_queue_index = %d", vq->vq_queue_index);
222 virtqueue_notify(vq);
225 while (VIRTQUEUE_NUSED(vq) == 0) {
230 while (VIRTQUEUE_NUSED(vq)) {
231 uint32_t idx, desc_idx, used_idx;
232 struct vring_used_elem *uep;
234 used_idx = (uint32_t)(vq->vq_used_cons_idx
235 & (vq->vq_nentries - 1));
236 uep = &vq->vq_ring.used->ring[used_idx];
237 idx = (uint32_t) uep->id;
240 while (vq->vq_ring.desc[desc_idx].flags & VRING_DESC_F_NEXT) {
241 desc_idx = vq->vq_ring.desc[desc_idx].next;
245 vq->vq_ring.desc[desc_idx].next = vq->vq_desc_head_idx;
246 vq->vq_desc_head_idx = idx;
248 vq->vq_used_cons_idx++;
252 PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\nvq->vq_desc_head_idx=%d",
253 vq->vq_free_cnt, vq->vq_desc_head_idx);
255 memcpy(&result, cvq->virtio_net_hdr_mz->addr,
256 sizeof(struct virtio_pmd_ctrl));
258 return result.status;
262 virtio_set_multiple_queues(struct rte_eth_dev *dev, uint16_t nb_queues)
264 struct virtio_hw *hw = dev->data->dev_private;
265 struct virtio_pmd_ctrl ctrl;
269 ctrl.hdr.class = VIRTIO_NET_CTRL_MQ;
270 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET;
271 memcpy(ctrl.data, &nb_queues, sizeof(uint16_t));
273 dlen[0] = sizeof(uint16_t);
275 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
277 PMD_INIT_LOG(ERR, "Multiqueue configured but send command "
278 "failed, this is too late now...");
286 virtio_dev_queue_release(void *queue __rte_unused)
292 virtio_get_queue_type(struct virtio_hw *hw, uint16_t vtpci_queue_idx)
294 if (vtpci_queue_idx == hw->max_queue_pairs * 2)
296 else if (vtpci_queue_idx % 2 == 0)
303 virtio_get_nr_vq(struct virtio_hw *hw)
305 uint16_t nr_vq = hw->max_queue_pairs * 2;
307 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ))
314 virtio_init_vring(struct virtqueue *vq)
316 int size = vq->vq_nentries;
317 struct vring *vr = &vq->vq_ring;
318 uint8_t *ring_mem = vq->vq_ring_virt_mem;
320 PMD_INIT_FUNC_TRACE();
323 * Reinitialise since virtio port might have been stopped and restarted
325 memset(ring_mem, 0, vq->vq_ring_size);
326 vring_init(vr, size, ring_mem, VIRTIO_PCI_VRING_ALIGN);
327 vq->vq_used_cons_idx = 0;
328 vq->vq_desc_head_idx = 0;
329 vq->vq_avail_idx = 0;
330 vq->vq_desc_tail_idx = (uint16_t)(vq->vq_nentries - 1);
331 vq->vq_free_cnt = vq->vq_nentries;
332 memset(vq->vq_descx, 0, sizeof(struct vq_desc_extra) * vq->vq_nentries);
334 vring_desc_init(vr->desc, size);
337 * Disable device(host) interrupting guest
339 virtqueue_disable_intr(vq);
343 virtio_init_queue(struct rte_eth_dev *dev, uint16_t vtpci_queue_idx)
345 char vq_name[VIRTQUEUE_MAX_NAME_SZ];
346 char vq_hdr_name[VIRTQUEUE_MAX_NAME_SZ];
347 const struct rte_memzone *mz = NULL, *hdr_mz = NULL;
348 unsigned int vq_size, size;
349 struct virtio_hw *hw = dev->data->dev_private;
350 struct virtnet_rx *rxvq = NULL;
351 struct virtnet_tx *txvq = NULL;
352 struct virtnet_ctl *cvq = NULL;
353 struct virtqueue *vq;
354 size_t sz_hdr_mz = 0;
355 void *sw_ring = NULL;
356 int queue_type = virtio_get_queue_type(hw, vtpci_queue_idx);
359 PMD_INIT_LOG(DEBUG, "setting up queue: %u", vtpci_queue_idx);
362 * Read the virtqueue size from the Queue Size field
363 * Always power of 2 and if 0 virtqueue does not exist
365 vq_size = VTPCI_OPS(hw)->get_queue_num(hw, vtpci_queue_idx);
366 PMD_INIT_LOG(DEBUG, "vq_size: %u", vq_size);
368 PMD_INIT_LOG(ERR, "virtqueue does not exist");
372 if (!rte_is_power_of_2(vq_size)) {
373 PMD_INIT_LOG(ERR, "virtqueue size is not powerof 2");
377 snprintf(vq_name, sizeof(vq_name), "port%d_vq%d",
378 dev->data->port_id, vtpci_queue_idx);
380 size = RTE_ALIGN_CEIL(sizeof(*vq) +
381 vq_size * sizeof(struct vq_desc_extra),
382 RTE_CACHE_LINE_SIZE);
383 if (queue_type == VTNET_TQ) {
385 * For each xmit packet, allocate a virtio_net_hdr
386 * and indirect ring elements
388 sz_hdr_mz = vq_size * sizeof(struct virtio_tx_region);
389 } else if (queue_type == VTNET_CQ) {
390 /* Allocate a page for control vq command, data and status */
391 sz_hdr_mz = PAGE_SIZE;
394 vq = rte_zmalloc_socket(vq_name, size, RTE_CACHE_LINE_SIZE,
397 PMD_INIT_LOG(ERR, "can not allocate vq");
400 hw->vqs[vtpci_queue_idx] = vq;
403 vq->vq_queue_index = vtpci_queue_idx;
404 vq->vq_nentries = vq_size;
407 * Reserve a memzone for vring elements
409 size = vring_size(vq_size, VIRTIO_PCI_VRING_ALIGN);
410 vq->vq_ring_size = RTE_ALIGN_CEIL(size, VIRTIO_PCI_VRING_ALIGN);
411 PMD_INIT_LOG(DEBUG, "vring_size: %d, rounded_vring_size: %d",
412 size, vq->vq_ring_size);
414 mz = rte_memzone_reserve_aligned(vq_name, vq->vq_ring_size,
416 0, VIRTIO_PCI_VRING_ALIGN);
418 if (rte_errno == EEXIST)
419 mz = rte_memzone_lookup(vq_name);
426 memset(mz->addr, 0, mz->len);
428 vq->vq_ring_mem = mz->phys_addr;
429 vq->vq_ring_virt_mem = mz->addr;
430 PMD_INIT_LOG(DEBUG, "vq->vq_ring_mem: 0x%" PRIx64,
431 (uint64_t)mz->phys_addr);
432 PMD_INIT_LOG(DEBUG, "vq->vq_ring_virt_mem: 0x%" PRIx64,
433 (uint64_t)(uintptr_t)mz->addr);
435 virtio_init_vring(vq);
438 snprintf(vq_hdr_name, sizeof(vq_hdr_name), "port%d_vq%d_hdr",
439 dev->data->port_id, vtpci_queue_idx);
440 hdr_mz = rte_memzone_reserve_aligned(vq_hdr_name, sz_hdr_mz,
442 RTE_CACHE_LINE_SIZE);
443 if (hdr_mz == NULL) {
444 if (rte_errno == EEXIST)
445 hdr_mz = rte_memzone_lookup(vq_hdr_name);
446 if (hdr_mz == NULL) {
453 if (queue_type == VTNET_RQ) {
454 size_t sz_sw = (RTE_PMD_VIRTIO_RX_MAX_BURST + vq_size) *
455 sizeof(vq->sw_ring[0]);
457 sw_ring = rte_zmalloc_socket("sw_ring", sz_sw,
458 RTE_CACHE_LINE_SIZE, SOCKET_ID_ANY);
460 PMD_INIT_LOG(ERR, "can not allocate RX soft ring");
465 vq->sw_ring = sw_ring;
468 rxvq->port_id = dev->data->port_id;
470 } else if (queue_type == VTNET_TQ) {
473 txvq->port_id = dev->data->port_id;
475 txvq->virtio_net_hdr_mz = hdr_mz;
476 txvq->virtio_net_hdr_mem = hdr_mz->phys_addr;
477 } else if (queue_type == VTNET_CQ) {
481 cvq->virtio_net_hdr_mz = hdr_mz;
482 cvq->virtio_net_hdr_mem = hdr_mz->phys_addr;
483 memset(cvq->virtio_net_hdr_mz->addr, 0, PAGE_SIZE);
488 /* For virtio_user case (that is when dev->pci_dev is NULL), we use
489 * virtual address. And we need properly set _offset_, please see
490 * VIRTIO_MBUF_DATA_DMA_ADDR in virtqueue.h for more information.
493 vq->offset = offsetof(struct rte_mbuf, buf_physaddr);
495 vq->vq_ring_mem = (uintptr_t)mz->addr;
496 vq->offset = offsetof(struct rte_mbuf, buf_addr);
497 if (queue_type == VTNET_TQ)
498 txvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr;
499 else if (queue_type == VTNET_CQ)
500 cvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr;
503 if (queue_type == VTNET_TQ) {
504 struct virtio_tx_region *txr;
508 memset(txr, 0, vq_size * sizeof(*txr));
509 for (i = 0; i < vq_size; i++) {
510 struct vring_desc *start_dp = txr[i].tx_indir;
512 vring_desc_init(start_dp, RTE_DIM(txr[i].tx_indir));
514 /* first indirect descriptor is always the tx header */
515 start_dp->addr = txvq->virtio_net_hdr_mem
517 + offsetof(struct virtio_tx_region, tx_hdr);
519 start_dp->len = hw->vtnet_hdr_size;
520 start_dp->flags = VRING_DESC_F_NEXT;
524 if (VTPCI_OPS(hw)->setup_queue(hw, vq) < 0) {
525 PMD_INIT_LOG(ERR, "setup_queue failed");
533 rte_memzone_free(hdr_mz);
534 rte_memzone_free(mz);
541 virtio_free_queues(struct virtio_hw *hw)
543 uint16_t nr_vq = virtio_get_nr_vq(hw);
544 struct virtqueue *vq;
551 for (i = 0; i < nr_vq; i++) {
556 queue_type = virtio_get_queue_type(hw, i);
557 if (queue_type == VTNET_RQ) {
558 rte_free(vq->sw_ring);
559 rte_memzone_free(vq->rxq.mz);
560 } else if (queue_type == VTNET_TQ) {
561 rte_memzone_free(vq->txq.mz);
562 rte_memzone_free(vq->txq.virtio_net_hdr_mz);
564 rte_memzone_free(vq->cq.mz);
565 rte_memzone_free(vq->cq.virtio_net_hdr_mz);
577 virtio_alloc_queues(struct rte_eth_dev *dev)
579 struct virtio_hw *hw = dev->data->dev_private;
580 uint16_t nr_vq = virtio_get_nr_vq(hw);
584 hw->vqs = rte_zmalloc(NULL, sizeof(struct virtqueue *) * nr_vq, 0);
586 PMD_INIT_LOG(ERR, "failed to allocate vqs");
590 for (i = 0; i < nr_vq; i++) {
591 ret = virtio_init_queue(dev, i);
593 virtio_free_queues(hw);
602 virtio_dev_close(struct rte_eth_dev *dev)
604 struct virtio_hw *hw = dev->data->dev_private;
606 PMD_INIT_LOG(DEBUG, "virtio_dev_close");
609 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
610 vtpci_irq_config(hw, VIRTIO_MSI_NO_VECTOR);
612 virtio_dev_free_mbufs(dev);
613 virtio_free_queues(hw);
617 virtio_dev_promiscuous_enable(struct rte_eth_dev *dev)
619 struct virtio_hw *hw = dev->data->dev_private;
620 struct virtio_pmd_ctrl ctrl;
624 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
625 PMD_INIT_LOG(INFO, "host does not support rx control\n");
629 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
630 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
634 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
636 PMD_INIT_LOG(ERR, "Failed to enable promisc");
640 virtio_dev_promiscuous_disable(struct rte_eth_dev *dev)
642 struct virtio_hw *hw = dev->data->dev_private;
643 struct virtio_pmd_ctrl ctrl;
647 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
648 PMD_INIT_LOG(INFO, "host does not support rx control\n");
652 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
653 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
657 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
659 PMD_INIT_LOG(ERR, "Failed to disable promisc");
663 virtio_dev_allmulticast_enable(struct rte_eth_dev *dev)
665 struct virtio_hw *hw = dev->data->dev_private;
666 struct virtio_pmd_ctrl ctrl;
670 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
671 PMD_INIT_LOG(INFO, "host does not support rx control\n");
675 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
676 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
680 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
682 PMD_INIT_LOG(ERR, "Failed to enable allmulticast");
686 virtio_dev_allmulticast_disable(struct rte_eth_dev *dev)
688 struct virtio_hw *hw = dev->data->dev_private;
689 struct virtio_pmd_ctrl ctrl;
693 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
694 PMD_INIT_LOG(INFO, "host does not support rx control\n");
698 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
699 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
703 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
705 PMD_INIT_LOG(ERR, "Failed to disable allmulticast");
708 #define VLAN_TAG_LEN 4 /* 802.3ac tag (not DMA'd) */
710 virtio_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
712 struct virtio_hw *hw = dev->data->dev_private;
713 uint32_t ether_hdr_len = ETHER_HDR_LEN + VLAN_TAG_LEN +
715 uint32_t frame_size = mtu + ether_hdr_len;
717 if (mtu < ETHER_MIN_MTU || frame_size > VIRTIO_MAX_RX_PKTLEN) {
718 PMD_INIT_LOG(ERR, "MTU should be between %d and %d\n",
719 ETHER_MIN_MTU, VIRTIO_MAX_RX_PKTLEN - ether_hdr_len);
726 * dev_ops for virtio, bare necessities for basic operation
728 static const struct eth_dev_ops virtio_eth_dev_ops = {
729 .dev_configure = virtio_dev_configure,
730 .dev_start = virtio_dev_start,
731 .dev_stop = virtio_dev_stop,
732 .dev_close = virtio_dev_close,
733 .promiscuous_enable = virtio_dev_promiscuous_enable,
734 .promiscuous_disable = virtio_dev_promiscuous_disable,
735 .allmulticast_enable = virtio_dev_allmulticast_enable,
736 .allmulticast_disable = virtio_dev_allmulticast_disable,
737 .mtu_set = virtio_mtu_set,
738 .dev_infos_get = virtio_dev_info_get,
739 .stats_get = virtio_dev_stats_get,
740 .xstats_get = virtio_dev_xstats_get,
741 .xstats_get_names = virtio_dev_xstats_get_names,
742 .stats_reset = virtio_dev_stats_reset,
743 .xstats_reset = virtio_dev_stats_reset,
744 .link_update = virtio_dev_link_update,
745 .rx_queue_setup = virtio_dev_rx_queue_setup,
746 .rx_queue_release = virtio_dev_queue_release,
747 .tx_queue_setup = virtio_dev_tx_queue_setup,
748 .tx_queue_release = virtio_dev_queue_release,
749 /* collect stats per queue */
750 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set,
751 .vlan_filter_set = virtio_vlan_filter_set,
752 .mac_addr_add = virtio_mac_addr_add,
753 .mac_addr_remove = virtio_mac_addr_remove,
754 .mac_addr_set = virtio_mac_addr_set,
758 virtio_dev_atomic_read_link_status(struct rte_eth_dev *dev,
759 struct rte_eth_link *link)
761 struct rte_eth_link *dst = link;
762 struct rte_eth_link *src = &(dev->data->dev_link);
764 if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
765 *(uint64_t *)src) == 0)
772 * Atomically writes the link status information into global
773 * structure rte_eth_dev.
776 * - Pointer to the structure rte_eth_dev to read from.
777 * - Pointer to the buffer to be saved with the link status.
780 * - On success, zero.
781 * - On failure, negative value.
784 virtio_dev_atomic_write_link_status(struct rte_eth_dev *dev,
785 struct rte_eth_link *link)
787 struct rte_eth_link *dst = &(dev->data->dev_link);
788 struct rte_eth_link *src = link;
790 if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
791 *(uint64_t *)src) == 0)
798 virtio_update_stats(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
802 for (i = 0; i < dev->data->nb_tx_queues; i++) {
803 const struct virtnet_tx *txvq = dev->data->tx_queues[i];
807 stats->opackets += txvq->stats.packets;
808 stats->obytes += txvq->stats.bytes;
809 stats->oerrors += txvq->stats.errors;
811 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
812 stats->q_opackets[i] = txvq->stats.packets;
813 stats->q_obytes[i] = txvq->stats.bytes;
817 for (i = 0; i < dev->data->nb_rx_queues; i++) {
818 const struct virtnet_rx *rxvq = dev->data->rx_queues[i];
822 stats->ipackets += rxvq->stats.packets;
823 stats->ibytes += rxvq->stats.bytes;
824 stats->ierrors += rxvq->stats.errors;
826 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
827 stats->q_ipackets[i] = rxvq->stats.packets;
828 stats->q_ibytes[i] = rxvq->stats.bytes;
832 stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed;
835 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev,
836 struct rte_eth_xstat_name *xstats_names,
837 __rte_unused unsigned limit)
843 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS +
844 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS;
846 if (xstats_names != NULL) {
847 /* Note: limit checked in rte_eth_xstats_names() */
849 for (i = 0; i < dev->data->nb_rx_queues; i++) {
850 struct virtqueue *rxvq = dev->data->rx_queues[i];
853 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) {
854 snprintf(xstats_names[count].name,
855 sizeof(xstats_names[count].name),
857 rte_virtio_rxq_stat_strings[t].name);
862 for (i = 0; i < dev->data->nb_tx_queues; i++) {
863 struct virtqueue *txvq = dev->data->tx_queues[i];
866 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) {
867 snprintf(xstats_names[count].name,
868 sizeof(xstats_names[count].name),
870 rte_virtio_txq_stat_strings[t].name);
880 virtio_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats,
886 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS +
887 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS;
892 for (i = 0; i < dev->data->nb_rx_queues; i++) {
893 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
900 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) {
901 xstats[count].value = *(uint64_t *)(((char *)rxvq) +
902 rte_virtio_rxq_stat_strings[t].offset);
903 xstats[count].id = count;
908 for (i = 0; i < dev->data->nb_tx_queues; i++) {
909 struct virtnet_tx *txvq = dev->data->tx_queues[i];
916 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) {
917 xstats[count].value = *(uint64_t *)(((char *)txvq) +
918 rte_virtio_txq_stat_strings[t].offset);
919 xstats[count].id = count;
928 virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
930 virtio_update_stats(dev, stats);
934 virtio_dev_stats_reset(struct rte_eth_dev *dev)
938 for (i = 0; i < dev->data->nb_tx_queues; i++) {
939 struct virtnet_tx *txvq = dev->data->tx_queues[i];
943 txvq->stats.packets = 0;
944 txvq->stats.bytes = 0;
945 txvq->stats.errors = 0;
946 txvq->stats.multicast = 0;
947 txvq->stats.broadcast = 0;
948 memset(txvq->stats.size_bins, 0,
949 sizeof(txvq->stats.size_bins[0]) * 8);
952 for (i = 0; i < dev->data->nb_rx_queues; i++) {
953 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
957 rxvq->stats.packets = 0;
958 rxvq->stats.bytes = 0;
959 rxvq->stats.errors = 0;
960 rxvq->stats.multicast = 0;
961 rxvq->stats.broadcast = 0;
962 memset(rxvq->stats.size_bins, 0,
963 sizeof(rxvq->stats.size_bins[0]) * 8);
968 virtio_set_hwaddr(struct virtio_hw *hw)
970 vtpci_write_dev_config(hw,
971 offsetof(struct virtio_net_config, mac),
972 &hw->mac_addr, ETHER_ADDR_LEN);
976 virtio_get_hwaddr(struct virtio_hw *hw)
978 if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) {
979 vtpci_read_dev_config(hw,
980 offsetof(struct virtio_net_config, mac),
981 &hw->mac_addr, ETHER_ADDR_LEN);
983 eth_random_addr(&hw->mac_addr[0]);
984 virtio_set_hwaddr(hw);
989 virtio_mac_table_set(struct virtio_hw *hw,
990 const struct virtio_net_ctrl_mac *uc,
991 const struct virtio_net_ctrl_mac *mc)
993 struct virtio_pmd_ctrl ctrl;
996 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
997 PMD_DRV_LOG(INFO, "host does not support mac table");
1001 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
1002 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET;
1004 len[0] = uc->entries * ETHER_ADDR_LEN + sizeof(uc->entries);
1005 memcpy(ctrl.data, uc, len[0]);
1007 len[1] = mc->entries * ETHER_ADDR_LEN + sizeof(mc->entries);
1008 memcpy(ctrl.data + len[0], mc, len[1]);
1010 err = virtio_send_command(hw->cvq, &ctrl, len, 2);
1012 PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err);
1016 virtio_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac_addr,
1017 uint32_t index, uint32_t vmdq __rte_unused)
1019 struct virtio_hw *hw = dev->data->dev_private;
1020 const struct ether_addr *addrs = dev->data->mac_addrs;
1022 struct virtio_net_ctrl_mac *uc, *mc;
1024 if (index >= VIRTIO_MAX_MAC_ADDRS) {
1025 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
1029 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
1031 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
1034 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
1035 const struct ether_addr *addr
1036 = (i == index) ? mac_addr : addrs + i;
1037 struct virtio_net_ctrl_mac *tbl
1038 = is_multicast_ether_addr(addr) ? mc : uc;
1040 memcpy(&tbl->macs[tbl->entries++], addr, ETHER_ADDR_LEN);
1043 virtio_mac_table_set(hw, uc, mc);
1047 virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
1049 struct virtio_hw *hw = dev->data->dev_private;
1050 struct ether_addr *addrs = dev->data->mac_addrs;
1051 struct virtio_net_ctrl_mac *uc, *mc;
1054 if (index >= VIRTIO_MAX_MAC_ADDRS) {
1055 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
1059 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
1061 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
1064 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
1065 struct virtio_net_ctrl_mac *tbl;
1067 if (i == index || is_zero_ether_addr(addrs + i))
1070 tbl = is_multicast_ether_addr(addrs + i) ? mc : uc;
1071 memcpy(&tbl->macs[tbl->entries++], addrs + i, ETHER_ADDR_LEN);
1074 virtio_mac_table_set(hw, uc, mc);
1078 virtio_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr)
1080 struct virtio_hw *hw = dev->data->dev_private;
1082 memcpy(hw->mac_addr, mac_addr, ETHER_ADDR_LEN);
1084 /* Use atomic update if available */
1085 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
1086 struct virtio_pmd_ctrl ctrl;
1087 int len = ETHER_ADDR_LEN;
1089 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
1090 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET;
1092 memcpy(ctrl.data, mac_addr, ETHER_ADDR_LEN);
1093 virtio_send_command(hw->cvq, &ctrl, &len, 1);
1094 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC))
1095 virtio_set_hwaddr(hw);
1099 virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
1101 struct virtio_hw *hw = dev->data->dev_private;
1102 struct virtio_pmd_ctrl ctrl;
1105 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN))
1108 ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN;
1109 ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL;
1110 memcpy(ctrl.data, &vlan_id, sizeof(vlan_id));
1111 len = sizeof(vlan_id);
1113 return virtio_send_command(hw->cvq, &ctrl, &len, 1);
1117 virtio_negotiate_features(struct virtio_hw *hw, uint64_t req_features)
1119 uint64_t host_features;
1121 /* Prepare guest_features: feature that driver wants to support */
1122 PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %" PRIx64,
1125 /* Read device(host) feature bits */
1126 host_features = VTPCI_OPS(hw)->get_features(hw);
1127 PMD_INIT_LOG(DEBUG, "host_features before negotiate = %" PRIx64,
1131 * Negotiate features: Subset of device feature bits are written back
1132 * guest feature bits.
1134 hw->guest_features = req_features;
1135 hw->guest_features = vtpci_negotiate_features(hw, host_features);
1136 PMD_INIT_LOG(DEBUG, "features after negotiate = %" PRIx64,
1137 hw->guest_features);
1140 if (!vtpci_with_feature(hw, VIRTIO_F_VERSION_1)) {
1142 "VIRTIO_F_VERSION_1 features is not enabled.");
1145 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_FEATURES_OK);
1146 if (!(vtpci_get_status(hw) & VIRTIO_CONFIG_STATUS_FEATURES_OK)) {
1148 "failed to set FEATURES_OK status!");
1153 hw->req_guest_features = req_features;
1159 * Process Virtio Config changed interrupt and call the callback
1160 * if link state changed.
1163 virtio_interrupt_handler(__rte_unused struct rte_intr_handle *handle,
1166 struct rte_eth_dev *dev = param;
1167 struct virtio_hw *hw = dev->data->dev_private;
1170 /* Read interrupt status which clears interrupt */
1171 isr = vtpci_isr(hw);
1172 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr);
1174 if (rte_intr_enable(&dev->pci_dev->intr_handle) < 0)
1175 PMD_DRV_LOG(ERR, "interrupt enable failed");
1177 if (isr & VIRTIO_PCI_ISR_CONFIG) {
1178 if (virtio_dev_link_update(dev, 0) == 0)
1179 _rte_eth_dev_callback_process(dev,
1180 RTE_ETH_EVENT_INTR_LSC, NULL);
1186 rx_func_get(struct rte_eth_dev *eth_dev)
1188 struct virtio_hw *hw = eth_dev->data->dev_private;
1189 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF))
1190 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts;
1192 eth_dev->rx_pkt_burst = &virtio_recv_pkts;
1195 /* reset device and renegotiate features if needed */
1197 virtio_init_device(struct rte_eth_dev *eth_dev, uint64_t req_features)
1199 struct virtio_hw *hw = eth_dev->data->dev_private;
1200 struct virtio_net_config *config;
1201 struct virtio_net_config local_config;
1202 struct rte_pci_device *pci_dev = eth_dev->pci_dev;
1205 /* Reset the device although not necessary at startup */
1208 /* Tell the host we've noticed this device. */
1209 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_ACK);
1211 /* Tell the host we've known how to drive the device. */
1212 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER);
1213 if (virtio_negotiate_features(hw, req_features) < 0)
1216 rte_eth_copy_pci_info(eth_dev, pci_dev);
1218 /* If host does not support both status and MSI-X then disable LSC */
1219 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS) && hw->use_msix)
1220 eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC;
1222 eth_dev->data->dev_flags &= ~RTE_ETH_DEV_INTR_LSC;
1224 rx_func_get(eth_dev);
1226 /* Setting up rx_header size for the device */
1227 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF) ||
1228 vtpci_with_feature(hw, VIRTIO_F_VERSION_1))
1229 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf);
1231 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr);
1233 /* Copy the permanent MAC address to: virtio_hw */
1234 virtio_get_hwaddr(hw);
1235 ether_addr_copy((struct ether_addr *) hw->mac_addr,
1236 ð_dev->data->mac_addrs[0]);
1238 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1239 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2],
1240 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]);
1242 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) {
1243 config = &local_config;
1245 vtpci_read_dev_config(hw,
1246 offsetof(struct virtio_net_config, mac),
1247 &config->mac, sizeof(config->mac));
1249 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1250 vtpci_read_dev_config(hw,
1251 offsetof(struct virtio_net_config, status),
1252 &config->status, sizeof(config->status));
1255 "VIRTIO_NET_F_STATUS is not supported");
1259 if (vtpci_with_feature(hw, VIRTIO_NET_F_MQ)) {
1260 vtpci_read_dev_config(hw,
1261 offsetof(struct virtio_net_config, max_virtqueue_pairs),
1262 &config->max_virtqueue_pairs,
1263 sizeof(config->max_virtqueue_pairs));
1266 "VIRTIO_NET_F_MQ is not supported");
1267 config->max_virtqueue_pairs = 1;
1270 hw->max_queue_pairs = config->max_virtqueue_pairs;
1272 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d",
1273 config->max_virtqueue_pairs);
1274 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status);
1276 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1277 config->mac[0], config->mac[1],
1278 config->mac[2], config->mac[3],
1279 config->mac[4], config->mac[5]);
1281 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=1");
1282 hw->max_queue_pairs = 1;
1285 ret = virtio_alloc_queues(eth_dev);
1288 vtpci_reinit_complete(hw);
1291 PMD_INIT_LOG(DEBUG, "port %d vendorID=0x%x deviceID=0x%x",
1292 eth_dev->data->port_id, pci_dev->id.vendor_id,
1293 pci_dev->id.device_id);
1299 * Remap the PCI device again (IO port map for legacy device and
1300 * memory map for modern device), so that the secondary process
1301 * could have the PCI initiated correctly.
1304 virtio_remap_pci(struct rte_pci_device *pci_dev, struct virtio_hw *hw)
1308 * We don't have to re-parse the PCI config space, since
1309 * rte_eal_pci_map_device() makes sure the mapped address
1310 * in secondary process would equal to the one mapped in
1311 * the primary process: error will be returned if that
1312 * requirement is not met.
1314 * That said, we could simply reuse all cap pointers
1315 * (such as dev_cfg, common_cfg, etc.) parsed from the
1316 * primary process, which is stored in shared memory.
1318 if (rte_eal_pci_map_device(pci_dev)) {
1319 PMD_INIT_LOG(DEBUG, "failed to map pci device!");
1323 if (rte_eal_pci_ioport_map(pci_dev, 0, VTPCI_IO(hw)) < 0)
1331 virtio_set_vtpci_ops(struct virtio_hw *hw)
1333 #ifdef RTE_VIRTIO_USER
1334 if (hw->virtio_user_dev)
1335 VTPCI_OPS(hw) = &virtio_user_ops;
1339 VTPCI_OPS(hw) = &modern_ops;
1341 VTPCI_OPS(hw) = &legacy_ops;
1345 * This function is based on probe() function in virtio_pci.c
1346 * It returns 0 on success.
1349 eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
1351 struct virtio_hw *hw = eth_dev->data->dev_private;
1352 struct rte_pci_device *pci_dev;
1353 uint32_t dev_flags = RTE_ETH_DEV_DETACHABLE;
1356 RTE_BUILD_BUG_ON(RTE_PKTMBUF_HEADROOM < sizeof(struct virtio_net_hdr_mrg_rxbuf));
1358 eth_dev->dev_ops = &virtio_eth_dev_ops;
1359 eth_dev->tx_pkt_burst = &virtio_xmit_pkts;
1361 if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
1362 if (!hw->virtio_user_dev) {
1363 ret = virtio_remap_pci(eth_dev->pci_dev, hw);
1368 virtio_set_vtpci_ops(hw);
1369 if (hw->use_simple_rxtx) {
1370 eth_dev->tx_pkt_burst = virtio_xmit_pkts_simple;
1371 eth_dev->rx_pkt_burst = virtio_recv_pkts_vec;
1373 rx_func_get(eth_dev);
1378 /* Allocate memory for storing MAC addresses */
1379 eth_dev->data->mac_addrs = rte_zmalloc("virtio", VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN, 0);
1380 if (eth_dev->data->mac_addrs == NULL) {
1382 "Failed to allocate %d bytes needed to store MAC addresses",
1383 VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN);
1387 pci_dev = eth_dev->pci_dev;
1388 hw->port_id = eth_dev->data->port_id;
1391 ret = vtpci_init(pci_dev, hw, &dev_flags);
1396 eth_dev->data->dev_flags = dev_flags;
1398 /* reset device and negotiate default features */
1399 ret = virtio_init_device(eth_dev, VIRTIO_PMD_DEFAULT_GUEST_FEATURES);
1403 /* Setup interrupt callback */
1404 if (eth_dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
1405 rte_intr_callback_register(&pci_dev->intr_handle,
1406 virtio_interrupt_handler, eth_dev);
1412 eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev)
1414 struct rte_pci_device *pci_dev;
1416 PMD_INIT_FUNC_TRACE();
1418 if (rte_eal_process_type() == RTE_PROC_SECONDARY)
1421 virtio_dev_stop(eth_dev);
1422 virtio_dev_close(eth_dev);
1423 pci_dev = eth_dev->pci_dev;
1425 eth_dev->dev_ops = NULL;
1426 eth_dev->tx_pkt_burst = NULL;
1427 eth_dev->rx_pkt_burst = NULL;
1429 rte_free(eth_dev->data->mac_addrs);
1430 eth_dev->data->mac_addrs = NULL;
1432 /* reset interrupt callback */
1433 if (eth_dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
1434 rte_intr_callback_unregister(&pci_dev->intr_handle,
1435 virtio_interrupt_handler,
1437 rte_eal_pci_unmap_device(pci_dev);
1439 PMD_INIT_LOG(DEBUG, "dev_uninit completed");
1444 static struct eth_driver rte_virtio_pmd = {
1447 .name = "net_virtio",
1449 .id_table = pci_id_virtio_map,
1450 .drv_flags = RTE_PCI_DRV_DETACHABLE,
1451 .probe = rte_eth_dev_pci_probe,
1452 .remove = rte_eth_dev_pci_remove,
1454 .eth_dev_init = eth_virtio_dev_init,
1455 .eth_dev_uninit = eth_virtio_dev_uninit,
1456 .dev_private_size = sizeof(struct virtio_hw),
1459 RTE_INIT(rte_virtio_pmd_init);
1461 rte_virtio_pmd_init(void)
1463 if (rte_eal_iopl_init() != 0) {
1464 PMD_INIT_LOG(ERR, "IOPL call failed - cannot use virtio PMD");
1468 rte_eal_pci_register(&rte_virtio_pmd.pci_drv);
1472 * Configure virtio device
1473 * It returns 0 on success.
1476 virtio_dev_configure(struct rte_eth_dev *dev)
1478 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
1479 struct virtio_hw *hw = dev->data->dev_private;
1481 PMD_INIT_LOG(DEBUG, "configure");
1483 /* Virtio does L4 checksum but not L3! */
1484 if (rxmode->hw_ip_checksum) {
1486 "virtio does not support IP checksum");
1490 if (rxmode->enable_lro) {
1492 "virtio does not support Large Receive Offload");
1496 /* start control queue */
1497 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ))
1498 virtio_dev_cq_start(dev);
1500 hw->vlan_strip = rxmode->hw_vlan_strip;
1502 if (rxmode->hw_vlan_filter
1503 && !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
1505 "vlan filtering not available on this host");
1509 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
1510 if (vtpci_irq_config(hw, 0) == VIRTIO_MSI_NO_VECTOR) {
1511 PMD_DRV_LOG(ERR, "failed to set config vector");
1520 virtio_dev_start(struct rte_eth_dev *dev)
1522 uint16_t nb_queues, i;
1523 struct virtnet_rx *rxvq;
1524 struct virtnet_tx *txvq __rte_unused;
1525 struct virtio_hw *hw = dev->data->dev_private;
1528 /* Finish the initialization of the queues */
1529 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1530 ret = virtio_dev_rx_queue_setup_finish(dev, i);
1534 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1535 ret = virtio_dev_tx_queue_setup_finish(dev, i);
1540 /* check if lsc interrupt feature is enabled */
1541 if (dev->data->dev_conf.intr_conf.lsc) {
1542 if (!(dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)) {
1543 PMD_DRV_LOG(ERR, "link status not supported by host");
1547 if (rte_intr_enable(&dev->pci_dev->intr_handle) < 0) {
1548 PMD_DRV_LOG(ERR, "interrupt enable failed");
1553 /*Notify the backend
1554 *Otherwise the tap backend might already stop its queue due to fullness.
1555 *vhost backend will have no chance to be waked up
1557 nb_queues = RTE_MAX(dev->data->nb_rx_queues, dev->data->nb_tx_queues);
1558 if (hw->max_queue_pairs > 1) {
1559 if (virtio_set_multiple_queues(dev, nb_queues) != 0)
1563 PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues);
1565 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1566 rxvq = dev->data->rx_queues[i];
1567 /* Flush the old packets */
1568 virtqueue_flush(rxvq->vq);
1569 virtqueue_notify(rxvq->vq);
1572 PMD_INIT_LOG(DEBUG, "Notified backend at initialization");
1574 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1575 rxvq = dev->data->rx_queues[i];
1576 VIRTQUEUE_DUMP(rxvq->vq);
1579 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1580 txvq = dev->data->tx_queues[i];
1581 VIRTQUEUE_DUMP(txvq->vq);
1586 /* Initialize Link state */
1587 virtio_dev_link_update(dev, 0);
1592 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev)
1594 struct rte_mbuf *buf;
1595 int i, mbuf_num = 0;
1597 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1598 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
1601 "Before freeing rxq[%d] used and unused buf", i);
1602 VIRTQUEUE_DUMP(rxvq->vq);
1604 PMD_INIT_LOG(DEBUG, "rx_queues[%d]=%p", i, rxvq);
1605 while ((buf = virtqueue_detatch_unused(rxvq->vq)) != NULL) {
1606 rte_pktmbuf_free(buf);
1610 PMD_INIT_LOG(DEBUG, "free %d mbufs", mbuf_num);
1612 "After freeing rxq[%d] used and unused buf", i);
1613 VIRTQUEUE_DUMP(rxvq->vq);
1616 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1617 struct virtnet_tx *txvq = dev->data->tx_queues[i];
1620 "Before freeing txq[%d] used and unused bufs",
1622 VIRTQUEUE_DUMP(txvq->vq);
1625 while ((buf = virtqueue_detatch_unused(txvq->vq)) != NULL) {
1626 rte_pktmbuf_free(buf);
1630 PMD_INIT_LOG(DEBUG, "free %d mbufs", mbuf_num);
1632 "After freeing txq[%d] used and unused buf", i);
1633 VIRTQUEUE_DUMP(txvq->vq);
1638 * Stop device: disable interrupt and mark link down
1641 virtio_dev_stop(struct rte_eth_dev *dev)
1643 struct virtio_hw *hw = dev->data->dev_private;
1644 struct rte_eth_link link;
1646 PMD_INIT_LOG(DEBUG, "stop");
1648 if (dev->data->dev_conf.intr_conf.lsc)
1649 rte_intr_disable(&dev->pci_dev->intr_handle);
1652 memset(&link, 0, sizeof(link));
1653 virtio_dev_atomic_write_link_status(dev, &link);
1657 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete)
1659 struct rte_eth_link link, old;
1661 struct virtio_hw *hw = dev->data->dev_private;
1662 memset(&link, 0, sizeof(link));
1663 virtio_dev_atomic_read_link_status(dev, &link);
1665 link.link_duplex = ETH_LINK_FULL_DUPLEX;
1666 link.link_speed = SPEED_10G;
1668 if (hw->started == 0) {
1669 link.link_status = ETH_LINK_DOWN;
1670 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1671 PMD_INIT_LOG(DEBUG, "Get link status from hw");
1672 vtpci_read_dev_config(hw,
1673 offsetof(struct virtio_net_config, status),
1674 &status, sizeof(status));
1675 if ((status & VIRTIO_NET_S_LINK_UP) == 0) {
1676 link.link_status = ETH_LINK_DOWN;
1677 PMD_INIT_LOG(DEBUG, "Port %d is down",
1678 dev->data->port_id);
1680 link.link_status = ETH_LINK_UP;
1681 PMD_INIT_LOG(DEBUG, "Port %d is up",
1682 dev->data->port_id);
1685 link.link_status = ETH_LINK_UP;
1687 virtio_dev_atomic_write_link_status(dev, &link);
1689 return (old.link_status == link.link_status) ? -1 : 0;
1693 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
1696 struct virtio_hw *hw = dev->data->dev_private;
1699 dev_info->driver_name = dev->driver->pci_drv.driver.name;
1701 dev_info->driver_name = "virtio_user PMD";
1702 dev_info->max_rx_queues =
1703 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_RX_QUEUES);
1704 dev_info->max_tx_queues =
1705 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_TX_QUEUES);
1706 dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE;
1707 dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN;
1708 dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS;
1709 dev_info->default_txconf = (struct rte_eth_txconf) {
1710 .txq_flags = ETH_TXQ_FLAGS_NOOFFLOADS
1712 dev_info->rx_offload_capa =
1713 DEV_RX_OFFLOAD_TCP_CKSUM |
1714 DEV_RX_OFFLOAD_UDP_CKSUM;
1716 dev_info->tx_offload_capa = 0;
1718 if (hw->guest_features & (1ULL << VIRTIO_NET_F_CSUM)) {
1719 dev_info->tx_offload_capa |=
1720 DEV_TX_OFFLOAD_UDP_CKSUM |
1721 DEV_TX_OFFLOAD_TCP_CKSUM;
1724 tso_mask = (1ULL << VIRTIO_NET_F_HOST_TSO4) |
1725 (1ULL << VIRTIO_NET_F_HOST_TSO6);
1726 if ((hw->guest_features & tso_mask) == tso_mask)
1727 dev_info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO;
1731 * It enables testpmd to collect per queue stats.
1734 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev,
1735 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx,
1736 __rte_unused uint8_t is_rx)
1741 RTE_PMD_EXPORT_NAME(net_virtio, __COUNTER__);
1742 RTE_PMD_REGISTER_PCI_TABLE(net_virtio, pci_id_virtio_map);