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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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_ethdev_pci.h>
42 #include <rte_memcpy.h>
43 #include <rte_string_fns.h>
44 #include <rte_memzone.h>
45 #include <rte_malloc.h>
46 #include <rte_atomic.h>
47 #include <rte_branch_prediction.h>
49 #include <rte_bus_pci.h>
50 #include <rte_ether.h>
51 #include <rte_common.h>
52 #include <rte_errno.h>
53 #include <rte_cpuflags.h>
55 #include <rte_memory.h>
59 #include "virtio_ethdev.h"
60 #include "virtio_pci.h"
61 #include "virtio_logs.h"
62 #include "virtqueue.h"
63 #include "virtio_rxtx.h"
65 static int eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev);
66 static int virtio_dev_configure(struct rte_eth_dev *dev);
67 static int virtio_dev_start(struct rte_eth_dev *dev);
68 static void virtio_dev_stop(struct rte_eth_dev *dev);
69 static void virtio_dev_promiscuous_enable(struct rte_eth_dev *dev);
70 static void virtio_dev_promiscuous_disable(struct rte_eth_dev *dev);
71 static void virtio_dev_allmulticast_enable(struct rte_eth_dev *dev);
72 static void virtio_dev_allmulticast_disable(struct rte_eth_dev *dev);
73 static void virtio_dev_info_get(struct rte_eth_dev *dev,
74 struct rte_eth_dev_info *dev_info);
75 static int virtio_dev_link_update(struct rte_eth_dev *dev,
76 int wait_to_complete);
77 static int virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask);
79 static void virtio_set_hwaddr(struct virtio_hw *hw);
80 static void virtio_get_hwaddr(struct virtio_hw *hw);
82 static int virtio_dev_stats_get(struct rte_eth_dev *dev,
83 struct rte_eth_stats *stats);
84 static int virtio_dev_xstats_get(struct rte_eth_dev *dev,
85 struct rte_eth_xstat *xstats, unsigned n);
86 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev,
87 struct rte_eth_xstat_name *xstats_names,
89 static void virtio_dev_stats_reset(struct rte_eth_dev *dev);
90 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev);
91 static int virtio_vlan_filter_set(struct rte_eth_dev *dev,
92 uint16_t vlan_id, int on);
93 static int virtio_mac_addr_add(struct rte_eth_dev *dev,
94 struct ether_addr *mac_addr,
95 uint32_t index, uint32_t vmdq);
96 static void virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index);
97 static void virtio_mac_addr_set(struct rte_eth_dev *dev,
98 struct ether_addr *mac_addr);
100 static int virtio_intr_enable(struct rte_eth_dev *dev);
101 static int virtio_intr_disable(struct rte_eth_dev *dev);
103 static int virtio_dev_queue_stats_mapping_set(
104 struct rte_eth_dev *eth_dev,
110 * The set of PCI devices this driver supports
112 static const struct rte_pci_id pci_id_virtio_map[] = {
113 { RTE_PCI_DEVICE(VIRTIO_PCI_VENDORID, VIRTIO_PCI_LEGACY_DEVICEID_NET) },
114 { RTE_PCI_DEVICE(VIRTIO_PCI_VENDORID, VIRTIO_PCI_MODERN_DEVICEID_NET) },
115 { .vendor_id = 0, /* sentinel */ },
118 struct rte_virtio_xstats_name_off {
119 char name[RTE_ETH_XSTATS_NAME_SIZE];
123 /* [rt]x_qX_ is prepended to the name string here */
124 static const struct rte_virtio_xstats_name_off rte_virtio_rxq_stat_strings[] = {
125 {"good_packets", offsetof(struct virtnet_rx, stats.packets)},
126 {"good_bytes", offsetof(struct virtnet_rx, stats.bytes)},
127 {"errors", offsetof(struct virtnet_rx, stats.errors)},
128 {"multicast_packets", offsetof(struct virtnet_rx, stats.multicast)},
129 {"broadcast_packets", offsetof(struct virtnet_rx, stats.broadcast)},
130 {"undersize_packets", offsetof(struct virtnet_rx, stats.size_bins[0])},
131 {"size_64_packets", offsetof(struct virtnet_rx, stats.size_bins[1])},
132 {"size_65_127_packets", offsetof(struct virtnet_rx, stats.size_bins[2])},
133 {"size_128_255_packets", offsetof(struct virtnet_rx, stats.size_bins[3])},
134 {"size_256_511_packets", offsetof(struct virtnet_rx, stats.size_bins[4])},
135 {"size_512_1023_packets", offsetof(struct virtnet_rx, stats.size_bins[5])},
136 {"size_1024_1518_packets", offsetof(struct virtnet_rx, stats.size_bins[6])},
137 {"size_1519_max_packets", offsetof(struct virtnet_rx, stats.size_bins[7])},
140 /* [rt]x_qX_ is prepended to the name string here */
141 static const struct rte_virtio_xstats_name_off rte_virtio_txq_stat_strings[] = {
142 {"good_packets", offsetof(struct virtnet_tx, stats.packets)},
143 {"good_bytes", offsetof(struct virtnet_tx, stats.bytes)},
144 {"errors", offsetof(struct virtnet_tx, stats.errors)},
145 {"multicast_packets", offsetof(struct virtnet_tx, stats.multicast)},
146 {"broadcast_packets", offsetof(struct virtnet_tx, stats.broadcast)},
147 {"undersize_packets", offsetof(struct virtnet_tx, stats.size_bins[0])},
148 {"size_64_packets", offsetof(struct virtnet_tx, stats.size_bins[1])},
149 {"size_65_127_packets", offsetof(struct virtnet_tx, stats.size_bins[2])},
150 {"size_128_255_packets", offsetof(struct virtnet_tx, stats.size_bins[3])},
151 {"size_256_511_packets", offsetof(struct virtnet_tx, stats.size_bins[4])},
152 {"size_512_1023_packets", offsetof(struct virtnet_tx, stats.size_bins[5])},
153 {"size_1024_1518_packets", offsetof(struct virtnet_tx, stats.size_bins[6])},
154 {"size_1519_max_packets", offsetof(struct virtnet_tx, stats.size_bins[7])},
157 #define VIRTIO_NB_RXQ_XSTATS (sizeof(rte_virtio_rxq_stat_strings) / \
158 sizeof(rte_virtio_rxq_stat_strings[0]))
159 #define VIRTIO_NB_TXQ_XSTATS (sizeof(rte_virtio_txq_stat_strings) / \
160 sizeof(rte_virtio_txq_stat_strings[0]))
162 struct virtio_hw_internal virtio_hw_internal[RTE_MAX_ETHPORTS];
165 virtio_send_command(struct virtnet_ctl *cvq, struct virtio_pmd_ctrl *ctrl,
166 int *dlen, int pkt_num)
170 virtio_net_ctrl_ack status = ~0;
171 struct virtio_pmd_ctrl *result;
172 struct virtqueue *vq;
174 ctrl->status = status;
176 if (!cvq || !cvq->vq) {
177 PMD_INIT_LOG(ERR, "Control queue is not supported.");
181 head = vq->vq_desc_head_idx;
183 PMD_INIT_LOG(DEBUG, "vq->vq_desc_head_idx = %d, status = %d, "
184 "vq->hw->cvq = %p vq = %p",
185 vq->vq_desc_head_idx, status, vq->hw->cvq, vq);
187 if ((vq->vq_free_cnt < ((uint32_t)pkt_num + 2)) || (pkt_num < 1))
190 memcpy(cvq->virtio_net_hdr_mz->addr, ctrl,
191 sizeof(struct virtio_pmd_ctrl));
194 * Format is enforced in qemu code:
195 * One TX packet for header;
196 * At least one TX packet per argument;
197 * One RX packet for ACK.
199 vq->vq_ring.desc[head].flags = VRING_DESC_F_NEXT;
200 vq->vq_ring.desc[head].addr = cvq->virtio_net_hdr_mem;
201 vq->vq_ring.desc[head].len = sizeof(struct virtio_net_ctrl_hdr);
203 i = vq->vq_ring.desc[head].next;
205 for (k = 0; k < pkt_num; k++) {
206 vq->vq_ring.desc[i].flags = VRING_DESC_F_NEXT;
207 vq->vq_ring.desc[i].addr = cvq->virtio_net_hdr_mem
208 + sizeof(struct virtio_net_ctrl_hdr)
209 + sizeof(ctrl->status) + sizeof(uint8_t)*sum;
210 vq->vq_ring.desc[i].len = dlen[k];
213 i = vq->vq_ring.desc[i].next;
216 vq->vq_ring.desc[i].flags = VRING_DESC_F_WRITE;
217 vq->vq_ring.desc[i].addr = cvq->virtio_net_hdr_mem
218 + sizeof(struct virtio_net_ctrl_hdr);
219 vq->vq_ring.desc[i].len = sizeof(ctrl->status);
222 vq->vq_desc_head_idx = vq->vq_ring.desc[i].next;
224 vq_update_avail_ring(vq, head);
225 vq_update_avail_idx(vq);
227 PMD_INIT_LOG(DEBUG, "vq->vq_queue_index = %d", vq->vq_queue_index);
229 virtqueue_notify(vq);
232 while (VIRTQUEUE_NUSED(vq) == 0) {
237 while (VIRTQUEUE_NUSED(vq)) {
238 uint32_t idx, desc_idx, used_idx;
239 struct vring_used_elem *uep;
241 used_idx = (uint32_t)(vq->vq_used_cons_idx
242 & (vq->vq_nentries - 1));
243 uep = &vq->vq_ring.used->ring[used_idx];
244 idx = (uint32_t) uep->id;
247 while (vq->vq_ring.desc[desc_idx].flags & VRING_DESC_F_NEXT) {
248 desc_idx = vq->vq_ring.desc[desc_idx].next;
252 vq->vq_ring.desc[desc_idx].next = vq->vq_desc_head_idx;
253 vq->vq_desc_head_idx = idx;
255 vq->vq_used_cons_idx++;
259 PMD_INIT_LOG(DEBUG, "vq->vq_free_cnt=%d\nvq->vq_desc_head_idx=%d",
260 vq->vq_free_cnt, vq->vq_desc_head_idx);
262 result = cvq->virtio_net_hdr_mz->addr;
264 return result->status;
268 virtio_set_multiple_queues(struct rte_eth_dev *dev, uint16_t nb_queues)
270 struct virtio_hw *hw = dev->data->dev_private;
271 struct virtio_pmd_ctrl ctrl;
275 ctrl.hdr.class = VIRTIO_NET_CTRL_MQ;
276 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET;
277 memcpy(ctrl.data, &nb_queues, sizeof(uint16_t));
279 dlen[0] = sizeof(uint16_t);
281 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
283 PMD_INIT_LOG(ERR, "Multiqueue configured but send command "
284 "failed, this is too late now...");
292 virtio_dev_queue_release(void *queue __rte_unused)
298 virtio_get_nr_vq(struct virtio_hw *hw)
300 uint16_t nr_vq = hw->max_queue_pairs * 2;
302 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ))
309 virtio_init_vring(struct virtqueue *vq)
311 int size = vq->vq_nentries;
312 struct vring *vr = &vq->vq_ring;
313 uint8_t *ring_mem = vq->vq_ring_virt_mem;
315 PMD_INIT_FUNC_TRACE();
318 * Reinitialise since virtio port might have been stopped and restarted
320 memset(ring_mem, 0, vq->vq_ring_size);
321 vring_init(vr, size, ring_mem, VIRTIO_PCI_VRING_ALIGN);
322 vq->vq_used_cons_idx = 0;
323 vq->vq_desc_head_idx = 0;
324 vq->vq_avail_idx = 0;
325 vq->vq_desc_tail_idx = (uint16_t)(vq->vq_nentries - 1);
326 vq->vq_free_cnt = vq->vq_nentries;
327 memset(vq->vq_descx, 0, sizeof(struct vq_desc_extra) * vq->vq_nentries);
329 vring_desc_init(vr->desc, size);
332 * Disable device(host) interrupting guest
334 virtqueue_disable_intr(vq);
338 virtio_init_queue(struct rte_eth_dev *dev, uint16_t vtpci_queue_idx)
340 char vq_name[VIRTQUEUE_MAX_NAME_SZ];
341 char vq_hdr_name[VIRTQUEUE_MAX_NAME_SZ];
342 const struct rte_memzone *mz = NULL, *hdr_mz = NULL;
343 unsigned int vq_size, size;
344 struct virtio_hw *hw = dev->data->dev_private;
345 struct virtnet_rx *rxvq = NULL;
346 struct virtnet_tx *txvq = NULL;
347 struct virtnet_ctl *cvq = NULL;
348 struct virtqueue *vq;
349 size_t sz_hdr_mz = 0;
350 void *sw_ring = NULL;
351 int queue_type = virtio_get_queue_type(hw, vtpci_queue_idx);
354 PMD_INIT_LOG(DEBUG, "setting up queue: %u", vtpci_queue_idx);
357 * Read the virtqueue size from the Queue Size field
358 * Always power of 2 and if 0 virtqueue does not exist
360 vq_size = VTPCI_OPS(hw)->get_queue_num(hw, vtpci_queue_idx);
361 PMD_INIT_LOG(DEBUG, "vq_size: %u", vq_size);
363 PMD_INIT_LOG(ERR, "virtqueue does not exist");
367 if (!rte_is_power_of_2(vq_size)) {
368 PMD_INIT_LOG(ERR, "virtqueue size is not powerof 2");
372 snprintf(vq_name, sizeof(vq_name), "port%d_vq%d",
373 dev->data->port_id, vtpci_queue_idx);
375 size = RTE_ALIGN_CEIL(sizeof(*vq) +
376 vq_size * sizeof(struct vq_desc_extra),
377 RTE_CACHE_LINE_SIZE);
378 if (queue_type == VTNET_TQ) {
380 * For each xmit packet, allocate a virtio_net_hdr
381 * and indirect ring elements
383 sz_hdr_mz = vq_size * sizeof(struct virtio_tx_region);
384 } else if (queue_type == VTNET_CQ) {
385 /* Allocate a page for control vq command, data and status */
386 sz_hdr_mz = PAGE_SIZE;
389 vq = rte_zmalloc_socket(vq_name, size, RTE_CACHE_LINE_SIZE,
392 PMD_INIT_LOG(ERR, "can not allocate vq");
395 hw->vqs[vtpci_queue_idx] = vq;
398 vq->vq_queue_index = vtpci_queue_idx;
399 vq->vq_nentries = vq_size;
402 * Reserve a memzone for vring elements
404 size = vring_size(vq_size, VIRTIO_PCI_VRING_ALIGN);
405 vq->vq_ring_size = RTE_ALIGN_CEIL(size, VIRTIO_PCI_VRING_ALIGN);
406 PMD_INIT_LOG(DEBUG, "vring_size: %d, rounded_vring_size: %d",
407 size, vq->vq_ring_size);
409 mz = rte_memzone_reserve_aligned(vq_name, vq->vq_ring_size,
411 0, VIRTIO_PCI_VRING_ALIGN);
413 if (rte_errno == EEXIST)
414 mz = rte_memzone_lookup(vq_name);
421 memset(mz->addr, 0, mz->len);
423 vq->vq_ring_mem = mz->iova;
424 vq->vq_ring_virt_mem = mz->addr;
425 PMD_INIT_LOG(DEBUG, "vq->vq_ring_mem: 0x%" PRIx64,
427 PMD_INIT_LOG(DEBUG, "vq->vq_ring_virt_mem: 0x%" PRIx64,
428 (uint64_t)(uintptr_t)mz->addr);
430 virtio_init_vring(vq);
433 snprintf(vq_hdr_name, sizeof(vq_hdr_name), "port%d_vq%d_hdr",
434 dev->data->port_id, vtpci_queue_idx);
435 hdr_mz = rte_memzone_reserve_aligned(vq_hdr_name, sz_hdr_mz,
437 RTE_CACHE_LINE_SIZE);
438 if (hdr_mz == NULL) {
439 if (rte_errno == EEXIST)
440 hdr_mz = rte_memzone_lookup(vq_hdr_name);
441 if (hdr_mz == NULL) {
448 if (queue_type == VTNET_RQ) {
449 size_t sz_sw = (RTE_PMD_VIRTIO_RX_MAX_BURST + vq_size) *
450 sizeof(vq->sw_ring[0]);
452 sw_ring = rte_zmalloc_socket("sw_ring", sz_sw,
453 RTE_CACHE_LINE_SIZE, SOCKET_ID_ANY);
455 PMD_INIT_LOG(ERR, "can not allocate RX soft ring");
460 vq->sw_ring = sw_ring;
463 rxvq->port_id = dev->data->port_id;
465 } else if (queue_type == VTNET_TQ) {
468 txvq->port_id = dev->data->port_id;
470 txvq->virtio_net_hdr_mz = hdr_mz;
471 txvq->virtio_net_hdr_mem = hdr_mz->iova;
472 } else if (queue_type == VTNET_CQ) {
476 cvq->virtio_net_hdr_mz = hdr_mz;
477 cvq->virtio_net_hdr_mem = hdr_mz->iova;
478 memset(cvq->virtio_net_hdr_mz->addr, 0, PAGE_SIZE);
483 /* For virtio_user case (that is when hw->dev is NULL), we use
484 * virtual address. And we need properly set _offset_, please see
485 * VIRTIO_MBUF_DATA_DMA_ADDR in virtqueue.h for more information.
487 if (!hw->virtio_user_dev)
488 vq->offset = offsetof(struct rte_mbuf, buf_iova);
490 vq->vq_ring_mem = (uintptr_t)mz->addr;
491 vq->offset = offsetof(struct rte_mbuf, buf_addr);
492 if (queue_type == VTNET_TQ)
493 txvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr;
494 else if (queue_type == VTNET_CQ)
495 cvq->virtio_net_hdr_mem = (uintptr_t)hdr_mz->addr;
498 if (queue_type == VTNET_TQ) {
499 struct virtio_tx_region *txr;
503 memset(txr, 0, vq_size * sizeof(*txr));
504 for (i = 0; i < vq_size; i++) {
505 struct vring_desc *start_dp = txr[i].tx_indir;
507 vring_desc_init(start_dp, RTE_DIM(txr[i].tx_indir));
509 /* first indirect descriptor is always the tx header */
510 start_dp->addr = txvq->virtio_net_hdr_mem
512 + offsetof(struct virtio_tx_region, tx_hdr);
514 start_dp->len = hw->vtnet_hdr_size;
515 start_dp->flags = VRING_DESC_F_NEXT;
519 if (VTPCI_OPS(hw)->setup_queue(hw, vq) < 0) {
520 PMD_INIT_LOG(ERR, "setup_queue failed");
528 rte_memzone_free(hdr_mz);
529 rte_memzone_free(mz);
536 virtio_free_queues(struct virtio_hw *hw)
538 uint16_t nr_vq = virtio_get_nr_vq(hw);
539 struct virtqueue *vq;
546 for (i = 0; i < nr_vq; i++) {
551 queue_type = virtio_get_queue_type(hw, i);
552 if (queue_type == VTNET_RQ) {
553 rte_free(vq->sw_ring);
554 rte_memzone_free(vq->rxq.mz);
555 } else if (queue_type == VTNET_TQ) {
556 rte_memzone_free(vq->txq.mz);
557 rte_memzone_free(vq->txq.virtio_net_hdr_mz);
559 rte_memzone_free(vq->cq.mz);
560 rte_memzone_free(vq->cq.virtio_net_hdr_mz);
572 virtio_alloc_queues(struct rte_eth_dev *dev)
574 struct virtio_hw *hw = dev->data->dev_private;
575 uint16_t nr_vq = virtio_get_nr_vq(hw);
579 hw->vqs = rte_zmalloc(NULL, sizeof(struct virtqueue *) * nr_vq, 0);
581 PMD_INIT_LOG(ERR, "failed to allocate vqs");
585 for (i = 0; i < nr_vq; i++) {
586 ret = virtio_init_queue(dev, i);
588 virtio_free_queues(hw);
596 static void virtio_queues_unbind_intr(struct rte_eth_dev *dev);
599 virtio_dev_close(struct rte_eth_dev *dev)
601 struct virtio_hw *hw = dev->data->dev_private;
602 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf;
604 PMD_INIT_LOG(DEBUG, "virtio_dev_close");
607 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
608 VTPCI_OPS(hw)->set_config_irq(hw, VIRTIO_MSI_NO_VECTOR);
610 virtio_queues_unbind_intr(dev);
612 if (intr_conf->lsc || intr_conf->rxq) {
613 virtio_intr_disable(dev);
614 rte_intr_efd_disable(dev->intr_handle);
615 rte_free(dev->intr_handle->intr_vec);
616 dev->intr_handle->intr_vec = NULL;
620 virtio_dev_free_mbufs(dev);
621 virtio_free_queues(hw);
625 virtio_dev_promiscuous_enable(struct rte_eth_dev *dev)
627 struct virtio_hw *hw = dev->data->dev_private;
628 struct virtio_pmd_ctrl ctrl;
632 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
633 PMD_INIT_LOG(INFO, "host does not support rx control");
637 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
638 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
642 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
644 PMD_INIT_LOG(ERR, "Failed to enable promisc");
648 virtio_dev_promiscuous_disable(struct rte_eth_dev *dev)
650 struct virtio_hw *hw = dev->data->dev_private;
651 struct virtio_pmd_ctrl ctrl;
655 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
656 PMD_INIT_LOG(INFO, "host does not support rx control");
660 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
661 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_PROMISC;
665 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
667 PMD_INIT_LOG(ERR, "Failed to disable promisc");
671 virtio_dev_allmulticast_enable(struct rte_eth_dev *dev)
673 struct virtio_hw *hw = dev->data->dev_private;
674 struct virtio_pmd_ctrl ctrl;
678 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
679 PMD_INIT_LOG(INFO, "host does not support rx control");
683 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
684 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
688 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
690 PMD_INIT_LOG(ERR, "Failed to enable allmulticast");
694 virtio_dev_allmulticast_disable(struct rte_eth_dev *dev)
696 struct virtio_hw *hw = dev->data->dev_private;
697 struct virtio_pmd_ctrl ctrl;
701 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_RX)) {
702 PMD_INIT_LOG(INFO, "host does not support rx control");
706 ctrl.hdr.class = VIRTIO_NET_CTRL_RX;
707 ctrl.hdr.cmd = VIRTIO_NET_CTRL_RX_ALLMULTI;
711 ret = virtio_send_command(hw->cvq, &ctrl, dlen, 1);
713 PMD_INIT_LOG(ERR, "Failed to disable allmulticast");
716 #define VLAN_TAG_LEN 4 /* 802.3ac tag (not DMA'd) */
718 virtio_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
720 struct virtio_hw *hw = dev->data->dev_private;
721 uint32_t ether_hdr_len = ETHER_HDR_LEN + VLAN_TAG_LEN +
723 uint32_t frame_size = mtu + ether_hdr_len;
724 uint32_t max_frame_size = hw->max_mtu + ether_hdr_len;
726 max_frame_size = RTE_MIN(max_frame_size, VIRTIO_MAX_RX_PKTLEN);
728 if (mtu < ETHER_MIN_MTU || frame_size > max_frame_size) {
729 PMD_INIT_LOG(ERR, "MTU should be between %d and %d",
730 ETHER_MIN_MTU, max_frame_size - ether_hdr_len);
737 virtio_dev_rx_queue_intr_enable(struct rte_eth_dev *dev, uint16_t queue_id)
739 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id];
740 struct virtqueue *vq = rxvq->vq;
742 virtqueue_enable_intr(vq);
747 virtio_dev_rx_queue_intr_disable(struct rte_eth_dev *dev, uint16_t queue_id)
749 struct virtnet_rx *rxvq = dev->data->rx_queues[queue_id];
750 struct virtqueue *vq = rxvq->vq;
752 virtqueue_disable_intr(vq);
757 * dev_ops for virtio, bare necessities for basic operation
759 static const struct eth_dev_ops virtio_eth_dev_ops = {
760 .dev_configure = virtio_dev_configure,
761 .dev_start = virtio_dev_start,
762 .dev_stop = virtio_dev_stop,
763 .dev_close = virtio_dev_close,
764 .promiscuous_enable = virtio_dev_promiscuous_enable,
765 .promiscuous_disable = virtio_dev_promiscuous_disable,
766 .allmulticast_enable = virtio_dev_allmulticast_enable,
767 .allmulticast_disable = virtio_dev_allmulticast_disable,
768 .mtu_set = virtio_mtu_set,
769 .dev_infos_get = virtio_dev_info_get,
770 .stats_get = virtio_dev_stats_get,
771 .xstats_get = virtio_dev_xstats_get,
772 .xstats_get_names = virtio_dev_xstats_get_names,
773 .stats_reset = virtio_dev_stats_reset,
774 .xstats_reset = virtio_dev_stats_reset,
775 .link_update = virtio_dev_link_update,
776 .vlan_offload_set = virtio_dev_vlan_offload_set,
777 .rx_queue_setup = virtio_dev_rx_queue_setup,
778 .rx_queue_intr_enable = virtio_dev_rx_queue_intr_enable,
779 .rx_queue_intr_disable = virtio_dev_rx_queue_intr_disable,
780 .rx_queue_release = virtio_dev_queue_release,
781 .rx_descriptor_done = virtio_dev_rx_queue_done,
782 .tx_queue_setup = virtio_dev_tx_queue_setup,
783 .tx_queue_release = virtio_dev_queue_release,
784 /* collect stats per queue */
785 .queue_stats_mapping_set = virtio_dev_queue_stats_mapping_set,
786 .vlan_filter_set = virtio_vlan_filter_set,
787 .mac_addr_add = virtio_mac_addr_add,
788 .mac_addr_remove = virtio_mac_addr_remove,
789 .mac_addr_set = virtio_mac_addr_set,
793 virtio_dev_atomic_read_link_status(struct rte_eth_dev *dev,
794 struct rte_eth_link *link)
796 struct rte_eth_link *dst = link;
797 struct rte_eth_link *src = &(dev->data->dev_link);
799 if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
800 *(uint64_t *)src) == 0)
807 * Atomically writes the link status information into global
808 * structure rte_eth_dev.
811 * - Pointer to the structure rte_eth_dev to read from.
812 * - Pointer to the buffer to be saved with the link status.
815 * - On success, zero.
816 * - On failure, negative value.
819 virtio_dev_atomic_write_link_status(struct rte_eth_dev *dev,
820 struct rte_eth_link *link)
822 struct rte_eth_link *dst = &(dev->data->dev_link);
823 struct rte_eth_link *src = link;
825 if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
826 *(uint64_t *)src) == 0)
833 virtio_update_stats(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
837 for (i = 0; i < dev->data->nb_tx_queues; i++) {
838 const struct virtnet_tx *txvq = dev->data->tx_queues[i];
842 stats->opackets += txvq->stats.packets;
843 stats->obytes += txvq->stats.bytes;
844 stats->oerrors += txvq->stats.errors;
846 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
847 stats->q_opackets[i] = txvq->stats.packets;
848 stats->q_obytes[i] = txvq->stats.bytes;
852 for (i = 0; i < dev->data->nb_rx_queues; i++) {
853 const struct virtnet_rx *rxvq = dev->data->rx_queues[i];
857 stats->ipackets += rxvq->stats.packets;
858 stats->ibytes += rxvq->stats.bytes;
859 stats->ierrors += rxvq->stats.errors;
861 if (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
862 stats->q_ipackets[i] = rxvq->stats.packets;
863 stats->q_ibytes[i] = rxvq->stats.bytes;
867 stats->rx_nombuf = dev->data->rx_mbuf_alloc_failed;
870 static int virtio_dev_xstats_get_names(struct rte_eth_dev *dev,
871 struct rte_eth_xstat_name *xstats_names,
872 __rte_unused unsigned limit)
878 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS +
879 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS;
881 if (xstats_names != NULL) {
882 /* Note: limit checked in rte_eth_xstats_names() */
884 for (i = 0; i < dev->data->nb_rx_queues; i++) {
885 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
888 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) {
889 snprintf(xstats_names[count].name,
890 sizeof(xstats_names[count].name),
892 rte_virtio_rxq_stat_strings[t].name);
897 for (i = 0; i < dev->data->nb_tx_queues; i++) {
898 struct virtnet_tx *txvq = dev->data->tx_queues[i];
901 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) {
902 snprintf(xstats_names[count].name,
903 sizeof(xstats_names[count].name),
905 rte_virtio_txq_stat_strings[t].name);
915 virtio_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats,
921 unsigned nstats = dev->data->nb_tx_queues * VIRTIO_NB_TXQ_XSTATS +
922 dev->data->nb_rx_queues * VIRTIO_NB_RXQ_XSTATS;
927 for (i = 0; i < dev->data->nb_rx_queues; i++) {
928 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
935 for (t = 0; t < VIRTIO_NB_RXQ_XSTATS; t++) {
936 xstats[count].value = *(uint64_t *)(((char *)rxvq) +
937 rte_virtio_rxq_stat_strings[t].offset);
938 xstats[count].id = count;
943 for (i = 0; i < dev->data->nb_tx_queues; i++) {
944 struct virtnet_tx *txvq = dev->data->tx_queues[i];
951 for (t = 0; t < VIRTIO_NB_TXQ_XSTATS; t++) {
952 xstats[count].value = *(uint64_t *)(((char *)txvq) +
953 rte_virtio_txq_stat_strings[t].offset);
954 xstats[count].id = count;
963 virtio_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
965 virtio_update_stats(dev, stats);
971 virtio_dev_stats_reset(struct rte_eth_dev *dev)
975 for (i = 0; i < dev->data->nb_tx_queues; i++) {
976 struct virtnet_tx *txvq = dev->data->tx_queues[i];
980 txvq->stats.packets = 0;
981 txvq->stats.bytes = 0;
982 txvq->stats.errors = 0;
983 txvq->stats.multicast = 0;
984 txvq->stats.broadcast = 0;
985 memset(txvq->stats.size_bins, 0,
986 sizeof(txvq->stats.size_bins[0]) * 8);
989 for (i = 0; i < dev->data->nb_rx_queues; i++) {
990 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
994 rxvq->stats.packets = 0;
995 rxvq->stats.bytes = 0;
996 rxvq->stats.errors = 0;
997 rxvq->stats.multicast = 0;
998 rxvq->stats.broadcast = 0;
999 memset(rxvq->stats.size_bins, 0,
1000 sizeof(rxvq->stats.size_bins[0]) * 8);
1005 virtio_set_hwaddr(struct virtio_hw *hw)
1007 vtpci_write_dev_config(hw,
1008 offsetof(struct virtio_net_config, mac),
1009 &hw->mac_addr, ETHER_ADDR_LEN);
1013 virtio_get_hwaddr(struct virtio_hw *hw)
1015 if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC)) {
1016 vtpci_read_dev_config(hw,
1017 offsetof(struct virtio_net_config, mac),
1018 &hw->mac_addr, ETHER_ADDR_LEN);
1020 eth_random_addr(&hw->mac_addr[0]);
1021 virtio_set_hwaddr(hw);
1026 virtio_mac_table_set(struct virtio_hw *hw,
1027 const struct virtio_net_ctrl_mac *uc,
1028 const struct virtio_net_ctrl_mac *mc)
1030 struct virtio_pmd_ctrl ctrl;
1033 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
1034 PMD_DRV_LOG(INFO, "host does not support mac table");
1038 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
1039 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_TABLE_SET;
1041 len[0] = uc->entries * ETHER_ADDR_LEN + sizeof(uc->entries);
1042 memcpy(ctrl.data, uc, len[0]);
1044 len[1] = mc->entries * ETHER_ADDR_LEN + sizeof(mc->entries);
1045 memcpy(ctrl.data + len[0], mc, len[1]);
1047 err = virtio_send_command(hw->cvq, &ctrl, len, 2);
1049 PMD_DRV_LOG(NOTICE, "mac table set failed: %d", err);
1054 virtio_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac_addr,
1055 uint32_t index, uint32_t vmdq __rte_unused)
1057 struct virtio_hw *hw = dev->data->dev_private;
1058 const struct ether_addr *addrs = dev->data->mac_addrs;
1060 struct virtio_net_ctrl_mac *uc, *mc;
1062 if (index >= VIRTIO_MAX_MAC_ADDRS) {
1063 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
1067 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
1069 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
1072 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
1073 const struct ether_addr *addr
1074 = (i == index) ? mac_addr : addrs + i;
1075 struct virtio_net_ctrl_mac *tbl
1076 = is_multicast_ether_addr(addr) ? mc : uc;
1078 memcpy(&tbl->macs[tbl->entries++], addr, ETHER_ADDR_LEN);
1081 return virtio_mac_table_set(hw, uc, mc);
1085 virtio_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
1087 struct virtio_hw *hw = dev->data->dev_private;
1088 struct ether_addr *addrs = dev->data->mac_addrs;
1089 struct virtio_net_ctrl_mac *uc, *mc;
1092 if (index >= VIRTIO_MAX_MAC_ADDRS) {
1093 PMD_DRV_LOG(ERR, "mac address index %u out of range", index);
1097 uc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(uc->entries));
1099 mc = alloca(VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN + sizeof(mc->entries));
1102 for (i = 0; i < VIRTIO_MAX_MAC_ADDRS; i++) {
1103 struct virtio_net_ctrl_mac *tbl;
1105 if (i == index || is_zero_ether_addr(addrs + i))
1108 tbl = is_multicast_ether_addr(addrs + i) ? mc : uc;
1109 memcpy(&tbl->macs[tbl->entries++], addrs + i, ETHER_ADDR_LEN);
1112 virtio_mac_table_set(hw, uc, mc);
1116 virtio_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr)
1118 struct virtio_hw *hw = dev->data->dev_private;
1120 memcpy(hw->mac_addr, mac_addr, ETHER_ADDR_LEN);
1122 /* Use atomic update if available */
1123 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_MAC_ADDR)) {
1124 struct virtio_pmd_ctrl ctrl;
1125 int len = ETHER_ADDR_LEN;
1127 ctrl.hdr.class = VIRTIO_NET_CTRL_MAC;
1128 ctrl.hdr.cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET;
1130 memcpy(ctrl.data, mac_addr, ETHER_ADDR_LEN);
1131 virtio_send_command(hw->cvq, &ctrl, &len, 1);
1132 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MAC))
1133 virtio_set_hwaddr(hw);
1137 virtio_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
1139 struct virtio_hw *hw = dev->data->dev_private;
1140 struct virtio_pmd_ctrl ctrl;
1143 if (!vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN))
1146 ctrl.hdr.class = VIRTIO_NET_CTRL_VLAN;
1147 ctrl.hdr.cmd = on ? VIRTIO_NET_CTRL_VLAN_ADD : VIRTIO_NET_CTRL_VLAN_DEL;
1148 memcpy(ctrl.data, &vlan_id, sizeof(vlan_id));
1149 len = sizeof(vlan_id);
1151 return virtio_send_command(hw->cvq, &ctrl, &len, 1);
1155 virtio_intr_enable(struct rte_eth_dev *dev)
1157 struct virtio_hw *hw = dev->data->dev_private;
1159 if (rte_intr_enable(dev->intr_handle) < 0)
1162 if (!hw->virtio_user_dev)
1163 hw->use_msix = vtpci_msix_detect(RTE_ETH_DEV_TO_PCI(dev));
1169 virtio_intr_disable(struct rte_eth_dev *dev)
1171 struct virtio_hw *hw = dev->data->dev_private;
1173 if (rte_intr_disable(dev->intr_handle) < 0)
1176 if (!hw->virtio_user_dev)
1177 hw->use_msix = vtpci_msix_detect(RTE_ETH_DEV_TO_PCI(dev));
1183 virtio_negotiate_features(struct virtio_hw *hw, uint64_t req_features)
1185 uint64_t host_features;
1187 /* Prepare guest_features: feature that driver wants to support */
1188 PMD_INIT_LOG(DEBUG, "guest_features before negotiate = %" PRIx64,
1191 /* Read device(host) feature bits */
1192 host_features = VTPCI_OPS(hw)->get_features(hw);
1193 PMD_INIT_LOG(DEBUG, "host_features before negotiate = %" PRIx64,
1196 /* If supported, ensure MTU value is valid before acknowledging it. */
1197 if (host_features & req_features & (1ULL << VIRTIO_NET_F_MTU)) {
1198 struct virtio_net_config config;
1200 vtpci_read_dev_config(hw,
1201 offsetof(struct virtio_net_config, mtu),
1202 &config.mtu, sizeof(config.mtu));
1204 if (config.mtu < ETHER_MIN_MTU)
1205 req_features &= ~(1ULL << VIRTIO_NET_F_MTU);
1209 * Negotiate features: Subset of device feature bits are written back
1210 * guest feature bits.
1212 hw->guest_features = req_features;
1213 hw->guest_features = vtpci_negotiate_features(hw, host_features);
1214 PMD_INIT_LOG(DEBUG, "features after negotiate = %" PRIx64,
1215 hw->guest_features);
1218 if (!vtpci_with_feature(hw, VIRTIO_F_VERSION_1)) {
1220 "VIRTIO_F_VERSION_1 features is not enabled.");
1223 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_FEATURES_OK);
1224 if (!(vtpci_get_status(hw) & VIRTIO_CONFIG_STATUS_FEATURES_OK)) {
1226 "failed to set FEATURES_OK status!");
1231 hw->req_guest_features = req_features;
1237 * Process Virtio Config changed interrupt and call the callback
1238 * if link state changed.
1241 virtio_interrupt_handler(void *param)
1243 struct rte_eth_dev *dev = param;
1244 struct virtio_hw *hw = dev->data->dev_private;
1247 /* Read interrupt status which clears interrupt */
1248 isr = vtpci_isr(hw);
1249 PMD_DRV_LOG(INFO, "interrupt status = %#x", isr);
1251 if (virtio_intr_enable(dev) < 0)
1252 PMD_DRV_LOG(ERR, "interrupt enable failed");
1254 if (isr & VIRTIO_PCI_ISR_CONFIG) {
1255 if (virtio_dev_link_update(dev, 0) == 0)
1256 _rte_eth_dev_callback_process(dev,
1257 RTE_ETH_EVENT_INTR_LSC,
1263 /* set rx and tx handlers according to what is supported */
1265 set_rxtx_funcs(struct rte_eth_dev *eth_dev)
1267 struct virtio_hw *hw = eth_dev->data->dev_private;
1269 if (hw->use_simple_rx) {
1270 PMD_INIT_LOG(INFO, "virtio: using simple Rx path on port %u",
1271 eth_dev->data->port_id);
1272 eth_dev->rx_pkt_burst = virtio_recv_pkts_vec;
1273 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
1275 "virtio: using mergeable buffer Rx path on port %u",
1276 eth_dev->data->port_id);
1277 eth_dev->rx_pkt_burst = &virtio_recv_mergeable_pkts;
1279 PMD_INIT_LOG(INFO, "virtio: using standard Rx path on port %u",
1280 eth_dev->data->port_id);
1281 eth_dev->rx_pkt_burst = &virtio_recv_pkts;
1284 if (hw->use_simple_tx) {
1285 PMD_INIT_LOG(INFO, "virtio: using simple Tx path on port %u",
1286 eth_dev->data->port_id);
1287 eth_dev->tx_pkt_burst = virtio_xmit_pkts_simple;
1289 PMD_INIT_LOG(INFO, "virtio: using standard Tx path on port %u",
1290 eth_dev->data->port_id);
1291 eth_dev->tx_pkt_burst = virtio_xmit_pkts;
1295 /* Only support 1:1 queue/interrupt mapping so far.
1296 * TODO: support n:1 queue/interrupt mapping when there are limited number of
1297 * interrupt vectors (<N+1).
1300 virtio_queues_bind_intr(struct rte_eth_dev *dev)
1303 struct virtio_hw *hw = dev->data->dev_private;
1305 PMD_INIT_LOG(INFO, "queue/interrupt binding");
1306 for (i = 0; i < dev->data->nb_rx_queues; ++i) {
1307 dev->intr_handle->intr_vec[i] = i + 1;
1308 if (VTPCI_OPS(hw)->set_queue_irq(hw, hw->vqs[i * 2], i + 1) ==
1309 VIRTIO_MSI_NO_VECTOR) {
1310 PMD_DRV_LOG(ERR, "failed to set queue vector");
1319 virtio_queues_unbind_intr(struct rte_eth_dev *dev)
1322 struct virtio_hw *hw = dev->data->dev_private;
1324 PMD_INIT_LOG(INFO, "queue/interrupt unbinding");
1325 for (i = 0; i < dev->data->nb_rx_queues; ++i)
1326 VTPCI_OPS(hw)->set_queue_irq(hw,
1327 hw->vqs[i * VTNET_CQ],
1328 VIRTIO_MSI_NO_VECTOR);
1332 virtio_configure_intr(struct rte_eth_dev *dev)
1334 struct virtio_hw *hw = dev->data->dev_private;
1336 if (!rte_intr_cap_multiple(dev->intr_handle)) {
1337 PMD_INIT_LOG(ERR, "Multiple intr vector not supported");
1341 if (rte_intr_efd_enable(dev->intr_handle, dev->data->nb_rx_queues)) {
1342 PMD_INIT_LOG(ERR, "Fail to create eventfd");
1346 if (!dev->intr_handle->intr_vec) {
1347 dev->intr_handle->intr_vec =
1348 rte_zmalloc("intr_vec",
1349 hw->max_queue_pairs * sizeof(int), 0);
1350 if (!dev->intr_handle->intr_vec) {
1351 PMD_INIT_LOG(ERR, "Failed to allocate %u rxq vectors",
1352 hw->max_queue_pairs);
1357 /* Re-register callback to update max_intr */
1358 rte_intr_callback_unregister(dev->intr_handle,
1359 virtio_interrupt_handler,
1361 rte_intr_callback_register(dev->intr_handle,
1362 virtio_interrupt_handler,
1365 /* DO NOT try to remove this! This function will enable msix, or QEMU
1366 * will encounter SIGSEGV when DRIVER_OK is sent.
1367 * And for legacy devices, this should be done before queue/vec binding
1368 * to change the config size from 20 to 24, or VIRTIO_MSI_QUEUE_VECTOR
1369 * (22) will be ignored.
1371 if (virtio_intr_enable(dev) < 0) {
1372 PMD_DRV_LOG(ERR, "interrupt enable failed");
1376 if (virtio_queues_bind_intr(dev) < 0) {
1377 PMD_INIT_LOG(ERR, "Failed to bind queue/interrupt");
1384 /* reset device and renegotiate features if needed */
1386 virtio_init_device(struct rte_eth_dev *eth_dev, uint64_t req_features)
1388 struct virtio_hw *hw = eth_dev->data->dev_private;
1389 struct virtio_net_config *config;
1390 struct virtio_net_config local_config;
1391 struct rte_pci_device *pci_dev = NULL;
1394 /* Reset the device although not necessary at startup */
1398 virtio_dev_free_mbufs(eth_dev);
1399 virtio_free_queues(hw);
1402 /* Tell the host we've noticed this device. */
1403 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_ACK);
1405 /* Tell the host we've known how to drive the device. */
1406 vtpci_set_status(hw, VIRTIO_CONFIG_STATUS_DRIVER);
1407 if (virtio_negotiate_features(hw, req_features) < 0)
1410 if (!hw->virtio_user_dev) {
1411 pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
1412 rte_eth_copy_pci_info(eth_dev, pci_dev);
1415 /* If host does not support both status and MSI-X then disable LSC */
1416 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS) &&
1417 hw->use_msix != VIRTIO_MSIX_NONE)
1418 eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC;
1420 eth_dev->data->dev_flags &= ~RTE_ETH_DEV_INTR_LSC;
1422 /* Setting up rx_header size for the device */
1423 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF) ||
1424 vtpci_with_feature(hw, VIRTIO_F_VERSION_1))
1425 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr_mrg_rxbuf);
1427 hw->vtnet_hdr_size = sizeof(struct virtio_net_hdr);
1429 /* Copy the permanent MAC address to: virtio_hw */
1430 virtio_get_hwaddr(hw);
1431 ether_addr_copy((struct ether_addr *) hw->mac_addr,
1432 ð_dev->data->mac_addrs[0]);
1434 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1435 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2],
1436 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]);
1438 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ)) {
1439 config = &local_config;
1441 vtpci_read_dev_config(hw,
1442 offsetof(struct virtio_net_config, mac),
1443 &config->mac, sizeof(config->mac));
1445 if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1446 vtpci_read_dev_config(hw,
1447 offsetof(struct virtio_net_config, status),
1448 &config->status, sizeof(config->status));
1451 "VIRTIO_NET_F_STATUS is not supported");
1455 if (vtpci_with_feature(hw, VIRTIO_NET_F_MQ)) {
1456 vtpci_read_dev_config(hw,
1457 offsetof(struct virtio_net_config, max_virtqueue_pairs),
1458 &config->max_virtqueue_pairs,
1459 sizeof(config->max_virtqueue_pairs));
1462 "VIRTIO_NET_F_MQ is not supported");
1463 config->max_virtqueue_pairs = 1;
1466 hw->max_queue_pairs = config->max_virtqueue_pairs;
1468 if (vtpci_with_feature(hw, VIRTIO_NET_F_MTU)) {
1469 vtpci_read_dev_config(hw,
1470 offsetof(struct virtio_net_config, mtu),
1472 sizeof(config->mtu));
1475 * MTU value has already been checked at negotiation
1476 * time, but check again in case it has changed since
1477 * then, which should not happen.
1479 if (config->mtu < ETHER_MIN_MTU) {
1480 PMD_INIT_LOG(ERR, "invalid max MTU value (%u)",
1485 hw->max_mtu = config->mtu;
1486 /* Set initial MTU to maximum one supported by vhost */
1487 eth_dev->data->mtu = config->mtu;
1490 hw->max_mtu = VIRTIO_MAX_RX_PKTLEN - ETHER_HDR_LEN -
1491 VLAN_TAG_LEN - hw->vtnet_hdr_size;
1494 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=%d",
1495 config->max_virtqueue_pairs);
1496 PMD_INIT_LOG(DEBUG, "config->status=%d", config->status);
1498 "PORT MAC: %02X:%02X:%02X:%02X:%02X:%02X",
1499 config->mac[0], config->mac[1],
1500 config->mac[2], config->mac[3],
1501 config->mac[4], config->mac[5]);
1503 PMD_INIT_LOG(DEBUG, "config->max_virtqueue_pairs=1");
1504 hw->max_queue_pairs = 1;
1507 ret = virtio_alloc_queues(eth_dev);
1511 if (eth_dev->data->dev_conf.intr_conf.rxq) {
1512 if (virtio_configure_intr(eth_dev) < 0) {
1513 PMD_INIT_LOG(ERR, "failed to configure interrupt");
1518 vtpci_reinit_complete(hw);
1521 PMD_INIT_LOG(DEBUG, "port %d vendorID=0x%x deviceID=0x%x",
1522 eth_dev->data->port_id, pci_dev->id.vendor_id,
1523 pci_dev->id.device_id);
1529 * Remap the PCI device again (IO port map for legacy device and
1530 * memory map for modern device), so that the secondary process
1531 * could have the PCI initiated correctly.
1534 virtio_remap_pci(struct rte_pci_device *pci_dev, struct virtio_hw *hw)
1538 * We don't have to re-parse the PCI config space, since
1539 * rte_pci_map_device() makes sure the mapped address
1540 * in secondary process would equal to the one mapped in
1541 * the primary process: error will be returned if that
1542 * requirement is not met.
1544 * That said, we could simply reuse all cap pointers
1545 * (such as dev_cfg, common_cfg, etc.) parsed from the
1546 * primary process, which is stored in shared memory.
1548 if (rte_pci_map_device(pci_dev)) {
1549 PMD_INIT_LOG(DEBUG, "failed to map pci device!");
1553 if (rte_pci_ioport_map(pci_dev, 0, VTPCI_IO(hw)) < 0)
1561 virtio_set_vtpci_ops(struct virtio_hw *hw)
1563 #ifdef RTE_VIRTIO_USER
1564 if (hw->virtio_user_dev)
1565 VTPCI_OPS(hw) = &virtio_user_ops;
1569 VTPCI_OPS(hw) = &modern_ops;
1571 VTPCI_OPS(hw) = &legacy_ops;
1575 * This function is based on probe() function in virtio_pci.c
1576 * It returns 0 on success.
1579 eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
1581 struct virtio_hw *hw = eth_dev->data->dev_private;
1584 RTE_BUILD_BUG_ON(RTE_PKTMBUF_HEADROOM < sizeof(struct virtio_net_hdr_mrg_rxbuf));
1586 eth_dev->dev_ops = &virtio_eth_dev_ops;
1588 if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
1589 if (!hw->virtio_user_dev) {
1590 ret = virtio_remap_pci(RTE_ETH_DEV_TO_PCI(eth_dev), hw);
1595 virtio_set_vtpci_ops(hw);
1596 set_rxtx_funcs(eth_dev);
1601 /* Allocate memory for storing MAC addresses */
1602 eth_dev->data->mac_addrs = rte_zmalloc("virtio", VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN, 0);
1603 if (eth_dev->data->mac_addrs == NULL) {
1605 "Failed to allocate %d bytes needed to store MAC addresses",
1606 VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN);
1610 hw->port_id = eth_dev->data->port_id;
1611 /* For virtio_user case the hw->virtio_user_dev is populated by
1612 * virtio_user_eth_dev_alloc() before eth_virtio_dev_init() is called.
1614 if (!hw->virtio_user_dev) {
1615 ret = vtpci_init(RTE_ETH_DEV_TO_PCI(eth_dev), hw);
1620 /* reset device and negotiate default features */
1621 ret = virtio_init_device(eth_dev, VIRTIO_PMD_DEFAULT_GUEST_FEATURES);
1628 rte_free(eth_dev->data->mac_addrs);
1633 eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev)
1635 PMD_INIT_FUNC_TRACE();
1637 if (rte_eal_process_type() == RTE_PROC_SECONDARY)
1640 virtio_dev_stop(eth_dev);
1641 virtio_dev_close(eth_dev);
1643 eth_dev->dev_ops = NULL;
1644 eth_dev->tx_pkt_burst = NULL;
1645 eth_dev->rx_pkt_burst = NULL;
1647 rte_free(eth_dev->data->mac_addrs);
1648 eth_dev->data->mac_addrs = NULL;
1650 if (eth_dev->device)
1651 rte_pci_unmap_device(RTE_ETH_DEV_TO_PCI(eth_dev));
1653 PMD_INIT_LOG(DEBUG, "dev_uninit completed");
1658 static int eth_virtio_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
1659 struct rte_pci_device *pci_dev)
1661 return rte_eth_dev_pci_generic_probe(pci_dev, sizeof(struct virtio_hw),
1662 eth_virtio_dev_init);
1665 static int eth_virtio_pci_remove(struct rte_pci_device *pci_dev)
1667 return rte_eth_dev_pci_generic_remove(pci_dev, eth_virtio_dev_uninit);
1670 static struct rte_pci_driver rte_virtio_pmd = {
1672 .name = "net_virtio",
1674 .id_table = pci_id_virtio_map,
1676 .probe = eth_virtio_pci_probe,
1677 .remove = eth_virtio_pci_remove,
1680 RTE_INIT(rte_virtio_pmd_init);
1682 rte_virtio_pmd_init(void)
1684 if (rte_eal_iopl_init() != 0) {
1685 PMD_INIT_LOG(ERR, "IOPL call failed - cannot use virtio PMD");
1689 rte_pci_register(&rte_virtio_pmd);
1693 * Configure virtio device
1694 * It returns 0 on success.
1697 virtio_dev_configure(struct rte_eth_dev *dev)
1699 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
1700 struct virtio_hw *hw = dev->data->dev_private;
1701 uint64_t req_features;
1704 PMD_INIT_LOG(DEBUG, "configure");
1705 req_features = VIRTIO_PMD_DEFAULT_GUEST_FEATURES;
1707 if (dev->data->dev_conf.intr_conf.rxq) {
1708 ret = virtio_init_device(dev, hw->req_guest_features);
1713 /* The name hw_ip_checksum is a bit confusing since it can be
1714 * set by the application to request L3 and/or L4 checksums. In
1715 * case of virtio, only L4 checksum is supported.
1717 if (rxmode->hw_ip_checksum)
1718 req_features |= (1ULL << VIRTIO_NET_F_GUEST_CSUM);
1720 if (rxmode->enable_lro)
1722 (1ULL << VIRTIO_NET_F_GUEST_TSO4) |
1723 (1ULL << VIRTIO_NET_F_GUEST_TSO6);
1725 /* if request features changed, reinit the device */
1726 if (req_features != hw->req_guest_features) {
1727 ret = virtio_init_device(dev, req_features);
1732 if (rxmode->hw_ip_checksum &&
1733 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_CSUM)) {
1735 "rx checksum not available on this host");
1739 if (rxmode->enable_lro &&
1740 (!vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO4) ||
1741 !vtpci_with_feature(hw, VIRTIO_NET_F_GUEST_TSO6))) {
1743 "Large Receive Offload not available on this host");
1747 /* start control queue */
1748 if (vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VQ))
1749 virtio_dev_cq_start(dev);
1751 hw->vlan_strip = rxmode->hw_vlan_strip;
1753 if (rxmode->hw_vlan_filter
1754 && !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
1756 "vlan filtering not available on this host");
1760 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
1761 /* Enable vector (0) for Link State Intrerrupt */
1762 if (VTPCI_OPS(hw)->set_config_irq(hw, 0) ==
1763 VIRTIO_MSI_NO_VECTOR) {
1764 PMD_DRV_LOG(ERR, "failed to set config vector");
1768 hw->use_simple_rx = 1;
1769 hw->use_simple_tx = 1;
1771 #if defined RTE_ARCH_ARM64 || defined RTE_ARCH_ARM
1772 if (!rte_cpu_get_flag_enabled(RTE_CPUFLAG_NEON)) {
1773 hw->use_simple_rx = 0;
1774 hw->use_simple_tx = 0;
1777 if (vtpci_with_feature(hw, VIRTIO_NET_F_MRG_RXBUF)) {
1778 hw->use_simple_rx = 0;
1779 hw->use_simple_tx = 0;
1782 if (rxmode->hw_ip_checksum)
1783 hw->use_simple_rx = 0;
1790 virtio_dev_start(struct rte_eth_dev *dev)
1792 uint16_t nb_queues, i;
1793 struct virtnet_rx *rxvq;
1794 struct virtnet_tx *txvq __rte_unused;
1795 struct virtio_hw *hw = dev->data->dev_private;
1798 /* Finish the initialization of the queues */
1799 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1800 ret = virtio_dev_rx_queue_setup_finish(dev, i);
1804 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1805 ret = virtio_dev_tx_queue_setup_finish(dev, i);
1810 /* check if lsc interrupt feature is enabled */
1811 if (dev->data->dev_conf.intr_conf.lsc) {
1812 if (!(dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)) {
1813 PMD_DRV_LOG(ERR, "link status not supported by host");
1818 /* Enable uio/vfio intr/eventfd mapping: althrough we already did that
1819 * in device configure, but it could be unmapped when device is
1822 if (dev->data->dev_conf.intr_conf.lsc ||
1823 dev->data->dev_conf.intr_conf.rxq) {
1824 virtio_intr_disable(dev);
1826 /* Setup interrupt callback */
1827 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
1828 rte_intr_callback_register(dev->intr_handle,
1829 virtio_interrupt_handler,
1832 if (virtio_intr_enable(dev) < 0) {
1833 PMD_DRV_LOG(ERR, "interrupt enable failed");
1838 /*Notify the backend
1839 *Otherwise the tap backend might already stop its queue due to fullness.
1840 *vhost backend will have no chance to be waked up
1842 nb_queues = RTE_MAX(dev->data->nb_rx_queues, dev->data->nb_tx_queues);
1843 if (hw->max_queue_pairs > 1) {
1844 if (virtio_set_multiple_queues(dev, nb_queues) != 0)
1848 PMD_INIT_LOG(DEBUG, "nb_queues=%d", nb_queues);
1850 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1851 rxvq = dev->data->rx_queues[i];
1852 /* Flush the old packets */
1853 virtqueue_rxvq_flush(rxvq->vq);
1854 virtqueue_notify(rxvq->vq);
1857 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1858 txvq = dev->data->tx_queues[i];
1859 virtqueue_notify(txvq->vq);
1862 PMD_INIT_LOG(DEBUG, "Notified backend at initialization");
1864 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1865 rxvq = dev->data->rx_queues[i];
1866 VIRTQUEUE_DUMP(rxvq->vq);
1869 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1870 txvq = dev->data->tx_queues[i];
1871 VIRTQUEUE_DUMP(txvq->vq);
1874 set_rxtx_funcs(dev);
1877 /* Initialize Link state */
1878 virtio_dev_link_update(dev, 0);
1883 static void virtio_dev_free_mbufs(struct rte_eth_dev *dev)
1885 struct rte_mbuf *buf;
1886 int i, mbuf_num = 0;
1888 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1889 struct virtnet_rx *rxvq = dev->data->rx_queues[i];
1891 if (rxvq == NULL || rxvq->vq == NULL)
1895 "Before freeing rxq[%d] used and unused buf", i);
1896 VIRTQUEUE_DUMP(rxvq->vq);
1898 PMD_INIT_LOG(DEBUG, "rx_queues[%d]=%p", i, rxvq);
1899 while ((buf = virtqueue_detatch_unused(rxvq->vq)) != NULL) {
1900 rte_pktmbuf_free(buf);
1904 PMD_INIT_LOG(DEBUG, "free %d mbufs", mbuf_num);
1906 "After freeing rxq[%d] used and unused buf", i);
1907 VIRTQUEUE_DUMP(rxvq->vq);
1910 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1911 struct virtnet_tx *txvq = dev->data->tx_queues[i];
1913 if (txvq == NULL || txvq->vq == NULL)
1917 "Before freeing txq[%d] used and unused bufs",
1919 VIRTQUEUE_DUMP(txvq->vq);
1922 while ((buf = virtqueue_detatch_unused(txvq->vq)) != NULL) {
1923 rte_pktmbuf_free(buf);
1927 PMD_INIT_LOG(DEBUG, "free %d mbufs", mbuf_num);
1929 "After freeing txq[%d] used and unused buf", i);
1930 VIRTQUEUE_DUMP(txvq->vq);
1935 * Stop device: disable interrupt and mark link down
1938 virtio_dev_stop(struct rte_eth_dev *dev)
1940 struct virtio_hw *hw = dev->data->dev_private;
1941 struct rte_eth_link link;
1942 struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf;
1944 PMD_INIT_LOG(DEBUG, "stop");
1946 if (intr_conf->lsc || intr_conf->rxq) {
1947 virtio_intr_disable(dev);
1949 /* Reset interrupt callback */
1950 if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) {
1951 rte_intr_callback_unregister(dev->intr_handle,
1952 virtio_interrupt_handler,
1958 memset(&link, 0, sizeof(link));
1959 virtio_dev_atomic_write_link_status(dev, &link);
1963 virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complete)
1965 struct rte_eth_link link, old;
1967 struct virtio_hw *hw = dev->data->dev_private;
1968 memset(&link, 0, sizeof(link));
1969 virtio_dev_atomic_read_link_status(dev, &link);
1971 link.link_duplex = ETH_LINK_FULL_DUPLEX;
1972 link.link_speed = SPEED_10G;
1974 if (hw->started == 0) {
1975 link.link_status = ETH_LINK_DOWN;
1976 } else if (vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) {
1977 PMD_INIT_LOG(DEBUG, "Get link status from hw");
1978 vtpci_read_dev_config(hw,
1979 offsetof(struct virtio_net_config, status),
1980 &status, sizeof(status));
1981 if ((status & VIRTIO_NET_S_LINK_UP) == 0) {
1982 link.link_status = ETH_LINK_DOWN;
1983 PMD_INIT_LOG(DEBUG, "Port %d is down",
1984 dev->data->port_id);
1986 link.link_status = ETH_LINK_UP;
1987 PMD_INIT_LOG(DEBUG, "Port %d is up",
1988 dev->data->port_id);
1991 link.link_status = ETH_LINK_UP;
1993 virtio_dev_atomic_write_link_status(dev, &link);
1995 return (old.link_status == link.link_status) ? -1 : 0;
1999 virtio_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask)
2001 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
2002 struct virtio_hw *hw = dev->data->dev_private;
2004 if (mask & ETH_VLAN_FILTER_MASK) {
2005 if (rxmode->hw_vlan_filter &&
2006 !vtpci_with_feature(hw, VIRTIO_NET_F_CTRL_VLAN)) {
2009 "vlan filtering not available on this host");
2015 if (mask & ETH_VLAN_STRIP_MASK)
2016 hw->vlan_strip = rxmode->hw_vlan_strip;
2022 virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
2024 uint64_t tso_mask, host_features;
2025 struct virtio_hw *hw = dev->data->dev_private;
2027 dev_info->speed_capa = ETH_LINK_SPEED_10G; /* fake value */
2029 dev_info->pci_dev = dev->device ? RTE_ETH_DEV_TO_PCI(dev) : NULL;
2030 dev_info->max_rx_queues =
2031 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_RX_QUEUES);
2032 dev_info->max_tx_queues =
2033 RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_TX_QUEUES);
2034 dev_info->min_rx_bufsize = VIRTIO_MIN_RX_BUFSIZE;
2035 dev_info->max_rx_pktlen = VIRTIO_MAX_RX_PKTLEN;
2036 dev_info->max_mac_addrs = VIRTIO_MAX_MAC_ADDRS;
2037 dev_info->default_txconf = (struct rte_eth_txconf) {
2038 .txq_flags = ETH_TXQ_FLAGS_NOOFFLOADS
2041 host_features = VTPCI_OPS(hw)->get_features(hw);
2042 dev_info->rx_offload_capa = 0;
2043 if (host_features & (1ULL << VIRTIO_NET_F_GUEST_CSUM)) {
2044 dev_info->rx_offload_capa |=
2045 DEV_RX_OFFLOAD_TCP_CKSUM |
2046 DEV_RX_OFFLOAD_UDP_CKSUM;
2048 tso_mask = (1ULL << VIRTIO_NET_F_GUEST_TSO4) |
2049 (1ULL << VIRTIO_NET_F_GUEST_TSO6);
2050 if ((host_features & tso_mask) == tso_mask)
2051 dev_info->rx_offload_capa |= DEV_RX_OFFLOAD_TCP_LRO;
2053 dev_info->tx_offload_capa = 0;
2054 if (hw->guest_features & (1ULL << VIRTIO_NET_F_CSUM)) {
2055 dev_info->tx_offload_capa |=
2056 DEV_TX_OFFLOAD_UDP_CKSUM |
2057 DEV_TX_OFFLOAD_TCP_CKSUM;
2059 tso_mask = (1ULL << VIRTIO_NET_F_HOST_TSO4) |
2060 (1ULL << VIRTIO_NET_F_HOST_TSO6);
2061 if ((hw->guest_features & tso_mask) == tso_mask)
2062 dev_info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO;
2066 * It enables testpmd to collect per queue stats.
2069 virtio_dev_queue_stats_mapping_set(__rte_unused struct rte_eth_dev *eth_dev,
2070 __rte_unused uint16_t queue_id, __rte_unused uint8_t stat_idx,
2071 __rte_unused uint8_t is_rx)
2076 RTE_PMD_EXPORT_NAME(net_virtio, __COUNTER__);
2077 RTE_PMD_REGISTER_PCI_TABLE(net_virtio, pci_id_virtio_map);
2078 RTE_PMD_REGISTER_KMOD_DEP(net_virtio, "* igb_uio | uio_pci_generic | vfio-pci");