1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2016 IGEL Co., Ltd.
3 * Copyright(c) 2016-2018 Intel Corporation
11 #include <ethdev_driver.h>
12 #include <ethdev_vdev.h>
13 #include <rte_malloc.h>
14 #include <rte_memcpy.h>
15 #include <rte_bus_vdev.h>
16 #include <rte_kvargs.h>
17 #include <rte_vhost.h>
18 #include <rte_spinlock.h>
20 #include "rte_eth_vhost.h"
22 RTE_LOG_REGISTER(vhost_logtype, pmd.net.vhost, NOTICE);
24 #define VHOST_LOG(level, ...) \
25 rte_log(RTE_LOG_ ## level, vhost_logtype, __VA_ARGS__)
27 enum {VIRTIO_RXQ, VIRTIO_TXQ, VIRTIO_QNUM};
29 #define ETH_VHOST_IFACE_ARG "iface"
30 #define ETH_VHOST_QUEUES_ARG "queues"
31 #define ETH_VHOST_CLIENT_ARG "client"
32 #define ETH_VHOST_IOMMU_SUPPORT "iommu-support"
33 #define ETH_VHOST_POSTCOPY_SUPPORT "postcopy-support"
34 #define ETH_VHOST_VIRTIO_NET_F_HOST_TSO "tso"
35 #define ETH_VHOST_LINEAR_BUF "linear-buffer"
36 #define ETH_VHOST_EXT_BUF "ext-buffer"
37 #define VHOST_MAX_PKT_BURST 32
39 static const char *valid_arguments[] = {
43 ETH_VHOST_IOMMU_SUPPORT,
44 ETH_VHOST_POSTCOPY_SUPPORT,
45 ETH_VHOST_VIRTIO_NET_F_HOST_TSO,
51 static struct rte_ether_addr base_eth_addr = {
62 enum vhost_xstats_pkts {
63 VHOST_UNDERSIZE_PKT = 0,
68 VHOST_512_TO_1023_PKT,
69 VHOST_1024_TO_1522_PKT,
70 VHOST_1523_TO_MAX_PKT,
78 VHOST_ERRORS_FRAGMENTED,
80 VHOST_UNKNOWN_PROTOCOL,
88 uint64_t xstats[VHOST_XSTATS_MAX];
93 rte_atomic32_t allow_queuing;
94 rte_atomic32_t while_queuing;
95 struct pmd_internal *internal;
96 struct rte_mempool *mb_pool;
98 uint16_t virtqueue_id;
99 struct vhost_stats stats;
101 rte_spinlock_t intr_lock;
104 struct pmd_internal {
105 rte_atomic32_t dev_attached;
108 uint64_t disable_flags;
111 rte_atomic32_t started;
115 struct internal_list {
116 TAILQ_ENTRY(internal_list) next;
117 struct rte_eth_dev *eth_dev;
120 TAILQ_HEAD(internal_list_head, internal_list);
121 static struct internal_list_head internal_list =
122 TAILQ_HEAD_INITIALIZER(internal_list);
124 static pthread_mutex_t internal_list_lock = PTHREAD_MUTEX_INITIALIZER;
126 static struct rte_eth_link pmd_link = {
128 .link_duplex = ETH_LINK_FULL_DUPLEX,
129 .link_status = ETH_LINK_DOWN
132 struct rte_vhost_vring_state {
135 bool cur[RTE_MAX_QUEUES_PER_PORT * 2];
136 bool seen[RTE_MAX_QUEUES_PER_PORT * 2];
138 unsigned int max_vring;
141 static struct rte_vhost_vring_state *vring_states[RTE_MAX_ETHPORTS];
143 #define VHOST_XSTATS_NAME_SIZE 64
145 struct vhost_xstats_name_off {
146 char name[VHOST_XSTATS_NAME_SIZE];
150 /* [rx]_is prepended to the name string here */
151 static const struct vhost_xstats_name_off vhost_rxport_stat_strings[] = {
153 offsetof(struct vhost_queue, stats.xstats[VHOST_PKT])},
155 offsetof(struct vhost_queue, stats.xstats[VHOST_BYTE])},
157 offsetof(struct vhost_queue, stats.xstats[VHOST_MISSED_PKT])},
158 {"broadcast_packets",
159 offsetof(struct vhost_queue, stats.xstats[VHOST_BROADCAST_PKT])},
160 {"multicast_packets",
161 offsetof(struct vhost_queue, stats.xstats[VHOST_MULTICAST_PKT])},
163 offsetof(struct vhost_queue, stats.xstats[VHOST_UNICAST_PKT])},
164 {"undersize_packets",
165 offsetof(struct vhost_queue, stats.xstats[VHOST_UNDERSIZE_PKT])},
167 offsetof(struct vhost_queue, stats.xstats[VHOST_64_PKT])},
168 {"size_65_to_127_packets",
169 offsetof(struct vhost_queue, stats.xstats[VHOST_65_TO_127_PKT])},
170 {"size_128_to_255_packets",
171 offsetof(struct vhost_queue, stats.xstats[VHOST_128_TO_255_PKT])},
172 {"size_256_to_511_packets",
173 offsetof(struct vhost_queue, stats.xstats[VHOST_256_TO_511_PKT])},
174 {"size_512_to_1023_packets",
175 offsetof(struct vhost_queue, stats.xstats[VHOST_512_TO_1023_PKT])},
176 {"size_1024_to_1522_packets",
177 offsetof(struct vhost_queue, stats.xstats[VHOST_1024_TO_1522_PKT])},
178 {"size_1523_to_max_packets",
179 offsetof(struct vhost_queue, stats.xstats[VHOST_1523_TO_MAX_PKT])},
180 {"errors_with_bad_CRC",
181 offsetof(struct vhost_queue, stats.xstats[VHOST_ERRORS_PKT])},
182 {"fragmented_errors",
183 offsetof(struct vhost_queue, stats.xstats[VHOST_ERRORS_FRAGMENTED])},
185 offsetof(struct vhost_queue, stats.xstats[VHOST_ERRORS_JABBER])},
186 {"unknown_protos_packets",
187 offsetof(struct vhost_queue, stats.xstats[VHOST_UNKNOWN_PROTOCOL])},
190 /* [tx]_ is prepended to the name string here */
191 static const struct vhost_xstats_name_off vhost_txport_stat_strings[] = {
193 offsetof(struct vhost_queue, stats.xstats[VHOST_PKT])},
195 offsetof(struct vhost_queue, stats.xstats[VHOST_BYTE])},
197 offsetof(struct vhost_queue, stats.xstats[VHOST_MISSED_PKT])},
198 {"broadcast_packets",
199 offsetof(struct vhost_queue, stats.xstats[VHOST_BROADCAST_PKT])},
200 {"multicast_packets",
201 offsetof(struct vhost_queue, stats.xstats[VHOST_MULTICAST_PKT])},
203 offsetof(struct vhost_queue, stats.xstats[VHOST_UNICAST_PKT])},
204 {"undersize_packets",
205 offsetof(struct vhost_queue, stats.xstats[VHOST_UNDERSIZE_PKT])},
207 offsetof(struct vhost_queue, stats.xstats[VHOST_64_PKT])},
208 {"size_65_to_127_packets",
209 offsetof(struct vhost_queue, stats.xstats[VHOST_65_TO_127_PKT])},
210 {"size_128_to_255_packets",
211 offsetof(struct vhost_queue, stats.xstats[VHOST_128_TO_255_PKT])},
212 {"size_256_to_511_packets",
213 offsetof(struct vhost_queue, stats.xstats[VHOST_256_TO_511_PKT])},
214 {"size_512_to_1023_packets",
215 offsetof(struct vhost_queue, stats.xstats[VHOST_512_TO_1023_PKT])},
216 {"size_1024_to_1522_packets",
217 offsetof(struct vhost_queue, stats.xstats[VHOST_1024_TO_1522_PKT])},
218 {"size_1523_to_max_packets",
219 offsetof(struct vhost_queue, stats.xstats[VHOST_1523_TO_MAX_PKT])},
220 {"errors_with_bad_CRC",
221 offsetof(struct vhost_queue, stats.xstats[VHOST_ERRORS_PKT])},
224 #define VHOST_NB_XSTATS_RXPORT (sizeof(vhost_rxport_stat_strings) / \
225 sizeof(vhost_rxport_stat_strings[0]))
227 #define VHOST_NB_XSTATS_TXPORT (sizeof(vhost_txport_stat_strings) / \
228 sizeof(vhost_txport_stat_strings[0]))
231 vhost_dev_xstats_reset(struct rte_eth_dev *dev)
233 struct vhost_queue *vq = NULL;
236 for (i = 0; i < dev->data->nb_rx_queues; i++) {
237 vq = dev->data->rx_queues[i];
240 memset(&vq->stats, 0, sizeof(vq->stats));
242 for (i = 0; i < dev->data->nb_tx_queues; i++) {
243 vq = dev->data->tx_queues[i];
246 memset(&vq->stats, 0, sizeof(vq->stats));
253 vhost_dev_xstats_get_names(struct rte_eth_dev *dev __rte_unused,
254 struct rte_eth_xstat_name *xstats_names,
255 unsigned int limit __rte_unused)
259 int nstats = VHOST_NB_XSTATS_RXPORT + VHOST_NB_XSTATS_TXPORT;
263 for (t = 0; t < VHOST_NB_XSTATS_RXPORT; t++) {
264 snprintf(xstats_names[count].name,
265 sizeof(xstats_names[count].name),
266 "rx_%s", vhost_rxport_stat_strings[t].name);
269 for (t = 0; t < VHOST_NB_XSTATS_TXPORT; t++) {
270 snprintf(xstats_names[count].name,
271 sizeof(xstats_names[count].name),
272 "tx_%s", vhost_txport_stat_strings[t].name);
279 vhost_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats,
284 unsigned int count = 0;
285 struct vhost_queue *vq = NULL;
286 unsigned int nxstats = VHOST_NB_XSTATS_RXPORT + VHOST_NB_XSTATS_TXPORT;
291 for (t = 0; t < VHOST_NB_XSTATS_RXPORT; t++) {
292 xstats[count].value = 0;
293 for (i = 0; i < dev->data->nb_rx_queues; i++) {
294 vq = dev->data->rx_queues[i];
297 xstats[count].value +=
298 *(uint64_t *)(((char *)vq)
299 + vhost_rxport_stat_strings[t].offset);
301 xstats[count].id = count;
304 for (t = 0; t < VHOST_NB_XSTATS_TXPORT; t++) {
305 xstats[count].value = 0;
306 for (i = 0; i < dev->data->nb_tx_queues; i++) {
307 vq = dev->data->tx_queues[i];
310 xstats[count].value +=
311 *(uint64_t *)(((char *)vq)
312 + vhost_txport_stat_strings[t].offset);
314 xstats[count].id = count;
321 vhost_count_xcast_packets(struct vhost_queue *vq,
322 struct rte_mbuf *mbuf)
324 struct rte_ether_addr *ea = NULL;
325 struct vhost_stats *pstats = &vq->stats;
327 ea = rte_pktmbuf_mtod(mbuf, struct rte_ether_addr *);
328 if (rte_is_multicast_ether_addr(ea)) {
329 if (rte_is_broadcast_ether_addr(ea))
330 pstats->xstats[VHOST_BROADCAST_PKT]++;
332 pstats->xstats[VHOST_MULTICAST_PKT]++;
334 pstats->xstats[VHOST_UNICAST_PKT]++;
339 vhost_update_packet_xstats(struct vhost_queue *vq, struct rte_mbuf **bufs,
340 uint16_t count, uint64_t nb_bytes,
343 uint32_t pkt_len = 0;
346 struct vhost_stats *pstats = &vq->stats;
348 pstats->xstats[VHOST_BYTE] += nb_bytes;
349 pstats->xstats[VHOST_MISSED_PKT] += nb_missed;
350 pstats->xstats[VHOST_UNICAST_PKT] += nb_missed;
352 for (i = 0; i < count ; i++) {
353 pstats->xstats[VHOST_PKT]++;
354 pkt_len = bufs[i]->pkt_len;
356 pstats->xstats[VHOST_64_PKT]++;
357 } else if (pkt_len > 64 && pkt_len < 1024) {
358 index = (sizeof(pkt_len) * 8)
359 - __builtin_clz(pkt_len) - 5;
360 pstats->xstats[index]++;
363 pstats->xstats[VHOST_UNDERSIZE_PKT]++;
364 else if (pkt_len <= 1522)
365 pstats->xstats[VHOST_1024_TO_1522_PKT]++;
366 else if (pkt_len > 1522)
367 pstats->xstats[VHOST_1523_TO_MAX_PKT]++;
369 vhost_count_xcast_packets(vq, bufs[i]);
374 eth_vhost_rx(void *q, struct rte_mbuf **bufs, uint16_t nb_bufs)
376 struct vhost_queue *r = q;
377 uint16_t i, nb_rx = 0;
378 uint16_t nb_receive = nb_bufs;
379 uint64_t nb_bytes = 0;
381 if (unlikely(rte_atomic32_read(&r->allow_queuing) == 0))
384 rte_atomic32_set(&r->while_queuing, 1);
386 if (unlikely(rte_atomic32_read(&r->allow_queuing) == 0))
389 /* Dequeue packets from guest TX queue */
392 uint16_t num = (uint16_t)RTE_MIN(nb_receive,
393 VHOST_MAX_PKT_BURST);
395 nb_pkts = rte_vhost_dequeue_burst(r->vid, r->virtqueue_id,
396 r->mb_pool, &bufs[nb_rx],
400 nb_receive -= nb_pkts;
405 r->stats.pkts += nb_rx;
407 for (i = 0; likely(i < nb_rx); i++) {
408 bufs[i]->port = r->port;
409 bufs[i]->vlan_tci = 0;
411 if (r->internal->vlan_strip)
412 rte_vlan_strip(bufs[i]);
414 nb_bytes += bufs[i]->pkt_len;
417 r->stats.bytes += nb_bytes;
418 vhost_update_packet_xstats(r, bufs, nb_rx, nb_bytes, 0);
421 rte_atomic32_set(&r->while_queuing, 0);
427 eth_vhost_tx(void *q, struct rte_mbuf **bufs, uint16_t nb_bufs)
429 struct vhost_queue *r = q;
430 uint16_t i, nb_tx = 0;
431 uint16_t nb_send = 0;
432 uint64_t nb_bytes = 0;
433 uint64_t nb_missed = 0;
435 if (unlikely(rte_atomic32_read(&r->allow_queuing) == 0))
438 rte_atomic32_set(&r->while_queuing, 1);
440 if (unlikely(rte_atomic32_read(&r->allow_queuing) == 0))
443 for (i = 0; i < nb_bufs; i++) {
444 struct rte_mbuf *m = bufs[i];
446 /* Do VLAN tag insertion */
447 if (m->ol_flags & PKT_TX_VLAN_PKT) {
448 int error = rte_vlan_insert(&m);
449 if (unlikely(error)) {
459 /* Enqueue packets to guest RX queue */
462 uint16_t num = (uint16_t)RTE_MIN(nb_send,
463 VHOST_MAX_PKT_BURST);
465 nb_pkts = rte_vhost_enqueue_burst(r->vid, r->virtqueue_id,
474 for (i = 0; likely(i < nb_tx); i++)
475 nb_bytes += bufs[i]->pkt_len;
477 nb_missed = nb_bufs - nb_tx;
479 r->stats.pkts += nb_tx;
480 r->stats.bytes += nb_bytes;
481 r->stats.missed_pkts += nb_bufs - nb_tx;
483 vhost_update_packet_xstats(r, bufs, nb_tx, nb_bytes, nb_missed);
485 /* According to RFC2863, ifHCOutUcastPkts, ifHCOutMulticastPkts and
486 * ifHCOutBroadcastPkts counters are increased when packets are not
487 * transmitted successfully.
489 for (i = nb_tx; i < nb_bufs; i++)
490 vhost_count_xcast_packets(r, bufs[i]);
492 for (i = 0; likely(i < nb_tx); i++)
493 rte_pktmbuf_free(bufs[i]);
495 rte_atomic32_set(&r->while_queuing, 0);
500 static inline struct internal_list *
501 find_internal_resource(char *ifname)
504 struct internal_list *list;
505 struct pmd_internal *internal;
510 pthread_mutex_lock(&internal_list_lock);
512 TAILQ_FOREACH(list, &internal_list, next) {
513 internal = list->eth_dev->data->dev_private;
514 if (!strcmp(internal->iface_name, ifname)) {
520 pthread_mutex_unlock(&internal_list_lock);
529 eth_vhost_update_intr(struct rte_eth_dev *eth_dev, uint16_t rxq_idx)
531 struct rte_intr_handle *handle = eth_dev->intr_handle;
532 struct rte_epoll_event rev;
538 if (handle->efds[rxq_idx] == handle->elist[rxq_idx].fd)
541 VHOST_LOG(INFO, "kickfd for rxq-%d was changed, updating handler.\n",
544 if (handle->elist[rxq_idx].fd != -1)
545 VHOST_LOG(ERR, "Unexpected previous kickfd value (Got %d, expected -1).\n",
546 handle->elist[rxq_idx].fd);
549 * First remove invalid epoll event, and then install
550 * the new one. May be solved with a proper API in the
553 epfd = handle->elist[rxq_idx].epfd;
554 rev = handle->elist[rxq_idx];
555 ret = rte_epoll_ctl(epfd, EPOLL_CTL_DEL, rev.fd,
556 &handle->elist[rxq_idx]);
558 VHOST_LOG(ERR, "Delete epoll event failed.\n");
562 rev.fd = handle->efds[rxq_idx];
563 handle->elist[rxq_idx] = rev;
564 ret = rte_epoll_ctl(epfd, EPOLL_CTL_ADD, rev.fd,
565 &handle->elist[rxq_idx]);
567 VHOST_LOG(ERR, "Add epoll event failed.\n");
575 eth_rxq_intr_enable(struct rte_eth_dev *dev, uint16_t qid)
577 struct rte_vhost_vring vring;
578 struct vhost_queue *vq;
579 int old_intr_enable, ret = 0;
581 vq = dev->data->rx_queues[qid];
583 VHOST_LOG(ERR, "rxq%d is not setup yet\n", qid);
587 rte_spinlock_lock(&vq->intr_lock);
588 old_intr_enable = vq->intr_enable;
590 ret = eth_vhost_update_intr(dev, qid);
591 rte_spinlock_unlock(&vq->intr_lock);
594 VHOST_LOG(ERR, "Failed to update rxq%d's intr\n", qid);
595 vq->intr_enable = old_intr_enable;
599 ret = rte_vhost_get_vhost_vring(vq->vid, (qid << 1) + 1, &vring);
601 VHOST_LOG(ERR, "Failed to get rxq%d's vring\n", qid);
604 VHOST_LOG(INFO, "Enable interrupt for rxq%d\n", qid);
605 rte_vhost_enable_guest_notification(vq->vid, (qid << 1) + 1, 1);
612 eth_rxq_intr_disable(struct rte_eth_dev *dev, uint16_t qid)
614 struct rte_vhost_vring vring;
615 struct vhost_queue *vq;
618 vq = dev->data->rx_queues[qid];
620 VHOST_LOG(ERR, "rxq%d is not setup yet\n", qid);
624 ret = rte_vhost_get_vhost_vring(vq->vid, (qid << 1) + 1, &vring);
626 VHOST_LOG(ERR, "Failed to get rxq%d's vring", qid);
629 VHOST_LOG(INFO, "Disable interrupt for rxq%d\n", qid);
630 rte_vhost_enable_guest_notification(vq->vid, (qid << 1) + 1, 0);
639 eth_vhost_uninstall_intr(struct rte_eth_dev *dev)
641 struct rte_intr_handle *intr_handle = dev->intr_handle;
644 if (intr_handle->intr_vec)
645 free(intr_handle->intr_vec);
649 dev->intr_handle = NULL;
653 eth_vhost_install_intr(struct rte_eth_dev *dev)
655 struct rte_vhost_vring vring;
656 struct vhost_queue *vq;
657 int nb_rxq = dev->data->nb_rx_queues;
661 /* uninstall firstly if we are reconnecting */
662 if (dev->intr_handle)
663 eth_vhost_uninstall_intr(dev);
665 dev->intr_handle = malloc(sizeof(*dev->intr_handle));
666 if (!dev->intr_handle) {
667 VHOST_LOG(ERR, "Fail to allocate intr_handle\n");
670 memset(dev->intr_handle, 0, sizeof(*dev->intr_handle));
672 dev->intr_handle->efd_counter_size = sizeof(uint64_t);
674 dev->intr_handle->intr_vec =
675 malloc(nb_rxq * sizeof(dev->intr_handle->intr_vec[0]));
677 if (!dev->intr_handle->intr_vec) {
679 "Failed to allocate memory for interrupt vector\n");
680 free(dev->intr_handle);
684 VHOST_LOG(INFO, "Prepare intr vec\n");
685 for (i = 0; i < nb_rxq; i++) {
686 dev->intr_handle->intr_vec[i] = RTE_INTR_VEC_RXTX_OFFSET + i;
687 dev->intr_handle->efds[i] = -1;
688 vq = dev->data->rx_queues[i];
690 VHOST_LOG(INFO, "rxq-%d not setup yet, skip!\n", i);
694 ret = rte_vhost_get_vhost_vring(vq->vid, (i << 1) + 1, &vring);
697 "Failed to get rxq-%d's vring, skip!\n", i);
701 if (vring.kickfd < 0) {
703 "rxq-%d's kickfd is invalid, skip!\n", i);
706 dev->intr_handle->efds[i] = vring.kickfd;
707 VHOST_LOG(INFO, "Installed intr vec for rxq-%d\n", i);
710 dev->intr_handle->nb_efd = nb_rxq;
711 dev->intr_handle->max_intr = nb_rxq + 1;
712 dev->intr_handle->type = RTE_INTR_HANDLE_VDEV;
718 update_queuing_status(struct rte_eth_dev *dev)
720 struct pmd_internal *internal = dev->data->dev_private;
721 struct vhost_queue *vq;
723 int allow_queuing = 1;
725 if (!dev->data->rx_queues || !dev->data->tx_queues)
728 if (rte_atomic32_read(&internal->started) == 0 ||
729 rte_atomic32_read(&internal->dev_attached) == 0)
732 /* Wait until rx/tx_pkt_burst stops accessing vhost device */
733 for (i = 0; i < dev->data->nb_rx_queues; i++) {
734 vq = dev->data->rx_queues[i];
737 rte_atomic32_set(&vq->allow_queuing, allow_queuing);
738 while (rte_atomic32_read(&vq->while_queuing))
742 for (i = 0; i < dev->data->nb_tx_queues; i++) {
743 vq = dev->data->tx_queues[i];
746 rte_atomic32_set(&vq->allow_queuing, allow_queuing);
747 while (rte_atomic32_read(&vq->while_queuing))
753 queue_setup(struct rte_eth_dev *eth_dev, struct pmd_internal *internal)
755 struct vhost_queue *vq;
758 for (i = 0; i < eth_dev->data->nb_rx_queues; i++) {
759 vq = eth_dev->data->rx_queues[i];
762 vq->vid = internal->vid;
763 vq->internal = internal;
764 vq->port = eth_dev->data->port_id;
766 for (i = 0; i < eth_dev->data->nb_tx_queues; i++) {
767 vq = eth_dev->data->tx_queues[i];
770 vq->vid = internal->vid;
771 vq->internal = internal;
772 vq->port = eth_dev->data->port_id;
779 struct rte_eth_dev *eth_dev;
780 struct internal_list *list;
781 struct pmd_internal *internal;
782 struct rte_eth_conf *dev_conf;
784 char ifname[PATH_MAX];
785 #ifdef RTE_LIBRTE_VHOST_NUMA
789 rte_vhost_get_ifname(vid, ifname, sizeof(ifname));
790 list = find_internal_resource(ifname);
792 VHOST_LOG(INFO, "Invalid device name: %s\n", ifname);
796 eth_dev = list->eth_dev;
797 internal = eth_dev->data->dev_private;
798 dev_conf = ð_dev->data->dev_conf;
800 #ifdef RTE_LIBRTE_VHOST_NUMA
801 newnode = rte_vhost_get_numa_node(vid);
803 eth_dev->data->numa_node = newnode;
807 if (rte_atomic32_read(&internal->started) == 1) {
808 queue_setup(eth_dev, internal);
810 if (dev_conf->intr_conf.rxq) {
811 if (eth_vhost_install_intr(eth_dev) < 0) {
813 "Failed to install interrupt handler.");
818 VHOST_LOG(INFO, "RX/TX queues not exist yet\n");
821 for (i = 0; i < rte_vhost_get_vring_num(vid); i++)
822 rte_vhost_enable_guest_notification(vid, i, 0);
824 rte_vhost_get_mtu(vid, ð_dev->data->mtu);
826 eth_dev->data->dev_link.link_status = ETH_LINK_UP;
828 rte_atomic32_set(&internal->dev_attached, 1);
829 update_queuing_status(eth_dev);
831 VHOST_LOG(INFO, "Vhost device %d created\n", vid);
833 rte_eth_dev_callback_process(eth_dev, RTE_ETH_EVENT_INTR_LSC, NULL);
839 destroy_device(int vid)
841 struct rte_eth_dev *eth_dev;
842 struct pmd_internal *internal;
843 struct vhost_queue *vq;
844 struct internal_list *list;
845 char ifname[PATH_MAX];
847 struct rte_vhost_vring_state *state;
849 rte_vhost_get_ifname(vid, ifname, sizeof(ifname));
850 list = find_internal_resource(ifname);
852 VHOST_LOG(ERR, "Invalid interface name: %s\n", ifname);
855 eth_dev = list->eth_dev;
856 internal = eth_dev->data->dev_private;
858 rte_atomic32_set(&internal->dev_attached, 0);
859 update_queuing_status(eth_dev);
861 eth_dev->data->dev_link.link_status = ETH_LINK_DOWN;
863 if (eth_dev->data->rx_queues && eth_dev->data->tx_queues) {
864 for (i = 0; i < eth_dev->data->nb_rx_queues; i++) {
865 vq = eth_dev->data->rx_queues[i];
870 for (i = 0; i < eth_dev->data->nb_tx_queues; i++) {
871 vq = eth_dev->data->tx_queues[i];
878 state = vring_states[eth_dev->data->port_id];
879 rte_spinlock_lock(&state->lock);
880 for (i = 0; i <= state->max_vring; i++) {
881 state->cur[i] = false;
882 state->seen[i] = false;
884 state->max_vring = 0;
885 rte_spinlock_unlock(&state->lock);
887 VHOST_LOG(INFO, "Vhost device %d destroyed\n", vid);
888 eth_vhost_uninstall_intr(eth_dev);
890 rte_eth_dev_callback_process(eth_dev, RTE_ETH_EVENT_INTR_LSC, NULL);
894 vring_conf_update(int vid, struct rte_eth_dev *eth_dev, uint16_t vring_id)
896 struct rte_eth_conf *dev_conf = ð_dev->data->dev_conf;
897 struct pmd_internal *internal = eth_dev->data->dev_private;
898 struct vhost_queue *vq;
899 struct rte_vhost_vring vring;
900 int rx_idx = vring_id % 2 ? (vring_id - 1) >> 1 : -1;
904 * The vring kickfd may be changed after the new device notification.
905 * Update it when the vring state is updated.
907 if (rx_idx >= 0 && rx_idx < eth_dev->data->nb_rx_queues &&
908 rte_atomic32_read(&internal->dev_attached) &&
909 rte_atomic32_read(&internal->started) &&
910 dev_conf->intr_conf.rxq) {
911 ret = rte_vhost_get_vhost_vring(vid, vring_id, &vring);
913 VHOST_LOG(ERR, "Failed to get vring %d information.\n",
917 eth_dev->intr_handle->efds[rx_idx] = vring.kickfd;
919 vq = eth_dev->data->rx_queues[rx_idx];
921 VHOST_LOG(ERR, "rxq%d is not setup yet\n", rx_idx);
925 rte_spinlock_lock(&vq->intr_lock);
927 ret = eth_vhost_update_intr(eth_dev, rx_idx);
928 rte_spinlock_unlock(&vq->intr_lock);
935 vring_state_changed(int vid, uint16_t vring, int enable)
937 struct rte_vhost_vring_state *state;
938 struct rte_eth_dev *eth_dev;
939 struct internal_list *list;
940 char ifname[PATH_MAX];
942 rte_vhost_get_ifname(vid, ifname, sizeof(ifname));
943 list = find_internal_resource(ifname);
945 VHOST_LOG(ERR, "Invalid interface name: %s\n", ifname);
949 eth_dev = list->eth_dev;
951 state = vring_states[eth_dev->data->port_id];
953 if (enable && vring_conf_update(vid, eth_dev, vring))
954 VHOST_LOG(INFO, "Failed to update vring-%d configuration.\n",
957 rte_spinlock_lock(&state->lock);
958 if (state->cur[vring] == enable) {
959 rte_spinlock_unlock(&state->lock);
962 state->cur[vring] = enable;
963 state->max_vring = RTE_MAX(vring, state->max_vring);
964 rte_spinlock_unlock(&state->lock);
966 VHOST_LOG(INFO, "vring%u is %s\n",
967 vring, enable ? "enabled" : "disabled");
969 rte_eth_dev_callback_process(eth_dev, RTE_ETH_EVENT_QUEUE_STATE, NULL);
974 static struct vhost_device_ops vhost_ops = {
975 .new_device = new_device,
976 .destroy_device = destroy_device,
977 .vring_state_changed = vring_state_changed,
981 vhost_driver_setup(struct rte_eth_dev *eth_dev)
983 struct pmd_internal *internal = eth_dev->data->dev_private;
984 struct internal_list *list = NULL;
985 struct rte_vhost_vring_state *vring_state = NULL;
986 unsigned int numa_node = eth_dev->device->numa_node;
987 const char *name = eth_dev->device->name;
989 /* Don't try to setup again if it has already been done. */
990 list = find_internal_resource(internal->iface_name);
994 list = rte_zmalloc_socket(name, sizeof(*list), 0, numa_node);
998 vring_state = rte_zmalloc_socket(name, sizeof(*vring_state),
1000 if (vring_state == NULL)
1003 list->eth_dev = eth_dev;
1004 pthread_mutex_lock(&internal_list_lock);
1005 TAILQ_INSERT_TAIL(&internal_list, list, next);
1006 pthread_mutex_unlock(&internal_list_lock);
1008 rte_spinlock_init(&vring_state->lock);
1009 vring_states[eth_dev->data->port_id] = vring_state;
1011 if (rte_vhost_driver_register(internal->iface_name, internal->flags))
1014 if (internal->disable_flags) {
1015 if (rte_vhost_driver_disable_features(internal->iface_name,
1016 internal->disable_flags))
1020 if (rte_vhost_driver_callback_register(internal->iface_name,
1022 VHOST_LOG(ERR, "Can't register callbacks\n");
1026 if (rte_vhost_driver_start(internal->iface_name) < 0) {
1027 VHOST_LOG(ERR, "Failed to start driver for %s\n",
1028 internal->iface_name);
1035 rte_vhost_driver_unregister(internal->iface_name);
1037 vring_states[eth_dev->data->port_id] = NULL;
1038 pthread_mutex_lock(&internal_list_lock);
1039 TAILQ_REMOVE(&internal_list, list, next);
1040 pthread_mutex_unlock(&internal_list_lock);
1041 rte_free(vring_state);
1049 rte_eth_vhost_get_queue_event(uint16_t port_id,
1050 struct rte_eth_vhost_queue_event *event)
1052 struct rte_vhost_vring_state *state;
1056 if (port_id >= RTE_MAX_ETHPORTS) {
1057 VHOST_LOG(ERR, "Invalid port id\n");
1061 state = vring_states[port_id];
1063 VHOST_LOG(ERR, "Unused port\n");
1067 rte_spinlock_lock(&state->lock);
1068 for (i = 0; i <= state->max_vring; i++) {
1069 idx = state->index++ % (state->max_vring + 1);
1071 if (state->cur[idx] != state->seen[idx]) {
1072 state->seen[idx] = state->cur[idx];
1073 event->queue_id = idx / 2;
1074 event->rx = idx & 1;
1075 event->enable = state->cur[idx];
1076 rte_spinlock_unlock(&state->lock);
1080 rte_spinlock_unlock(&state->lock);
1086 rte_eth_vhost_get_vid_from_port_id(uint16_t port_id)
1088 struct internal_list *list;
1089 struct rte_eth_dev *eth_dev;
1090 struct vhost_queue *vq;
1093 if (!rte_eth_dev_is_valid_port(port_id))
1096 pthread_mutex_lock(&internal_list_lock);
1098 TAILQ_FOREACH(list, &internal_list, next) {
1099 eth_dev = list->eth_dev;
1100 if (eth_dev->data->port_id == port_id) {
1101 vq = eth_dev->data->rx_queues[0];
1109 pthread_mutex_unlock(&internal_list_lock);
1115 eth_dev_configure(struct rte_eth_dev *dev)
1117 struct pmd_internal *internal = dev->data->dev_private;
1118 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
1120 /* NOTE: the same process has to operate a vhost interface
1121 * from beginning to end (from eth_dev configure to eth_dev close).
1122 * It is user's responsibility at the moment.
1124 if (vhost_driver_setup(dev) < 0)
1127 internal->vlan_strip = !!(rxmode->offloads & DEV_RX_OFFLOAD_VLAN_STRIP);
1133 eth_dev_start(struct rte_eth_dev *eth_dev)
1135 struct pmd_internal *internal = eth_dev->data->dev_private;
1136 struct rte_eth_conf *dev_conf = ð_dev->data->dev_conf;
1138 queue_setup(eth_dev, internal);
1140 if (rte_atomic32_read(&internal->dev_attached) == 1) {
1141 if (dev_conf->intr_conf.rxq) {
1142 if (eth_vhost_install_intr(eth_dev) < 0) {
1144 "Failed to install interrupt handler.");
1150 rte_atomic32_set(&internal->started, 1);
1151 update_queuing_status(eth_dev);
1157 eth_dev_stop(struct rte_eth_dev *dev)
1159 struct pmd_internal *internal = dev->data->dev_private;
1161 dev->data->dev_started = 0;
1162 rte_atomic32_set(&internal->started, 0);
1163 update_queuing_status(dev);
1169 eth_dev_close(struct rte_eth_dev *dev)
1171 struct pmd_internal *internal;
1172 struct internal_list *list;
1173 unsigned int i, ret;
1175 if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1178 internal = dev->data->dev_private;
1182 ret = eth_dev_stop(dev);
1184 list = find_internal_resource(internal->iface_name);
1186 rte_vhost_driver_unregister(internal->iface_name);
1187 pthread_mutex_lock(&internal_list_lock);
1188 TAILQ_REMOVE(&internal_list, list, next);
1189 pthread_mutex_unlock(&internal_list_lock);
1193 if (dev->data->rx_queues)
1194 for (i = 0; i < dev->data->nb_rx_queues; i++)
1195 rte_free(dev->data->rx_queues[i]);
1197 if (dev->data->tx_queues)
1198 for (i = 0; i < dev->data->nb_tx_queues; i++)
1199 rte_free(dev->data->tx_queues[i]);
1201 rte_free(internal->iface_name);
1204 dev->data->dev_private = NULL;
1206 rte_free(vring_states[dev->data->port_id]);
1207 vring_states[dev->data->port_id] = NULL;
1213 eth_rx_queue_setup(struct rte_eth_dev *dev, uint16_t rx_queue_id,
1214 uint16_t nb_rx_desc __rte_unused,
1215 unsigned int socket_id,
1216 const struct rte_eth_rxconf *rx_conf __rte_unused,
1217 struct rte_mempool *mb_pool)
1219 struct vhost_queue *vq;
1221 vq = rte_zmalloc_socket(NULL, sizeof(struct vhost_queue),
1222 RTE_CACHE_LINE_SIZE, socket_id);
1224 VHOST_LOG(ERR, "Failed to allocate memory for rx queue\n");
1228 vq->mb_pool = mb_pool;
1229 vq->virtqueue_id = rx_queue_id * VIRTIO_QNUM + VIRTIO_TXQ;
1230 rte_spinlock_init(&vq->intr_lock);
1231 dev->data->rx_queues[rx_queue_id] = vq;
1237 eth_tx_queue_setup(struct rte_eth_dev *dev, uint16_t tx_queue_id,
1238 uint16_t nb_tx_desc __rte_unused,
1239 unsigned int socket_id,
1240 const struct rte_eth_txconf *tx_conf __rte_unused)
1242 struct vhost_queue *vq;
1244 vq = rte_zmalloc_socket(NULL, sizeof(struct vhost_queue),
1245 RTE_CACHE_LINE_SIZE, socket_id);
1247 VHOST_LOG(ERR, "Failed to allocate memory for tx queue\n");
1251 vq->virtqueue_id = tx_queue_id * VIRTIO_QNUM + VIRTIO_RXQ;
1252 rte_spinlock_init(&vq->intr_lock);
1253 dev->data->tx_queues[tx_queue_id] = vq;
1259 eth_dev_info(struct rte_eth_dev *dev,
1260 struct rte_eth_dev_info *dev_info)
1262 struct pmd_internal *internal;
1264 internal = dev->data->dev_private;
1265 if (internal == NULL) {
1266 VHOST_LOG(ERR, "Invalid device specified\n");
1270 dev_info->max_mac_addrs = 1;
1271 dev_info->max_rx_pktlen = (uint32_t)-1;
1272 dev_info->max_rx_queues = internal->max_queues;
1273 dev_info->max_tx_queues = internal->max_queues;
1274 dev_info->min_rx_bufsize = 0;
1276 dev_info->tx_offload_capa = DEV_TX_OFFLOAD_MULTI_SEGS |
1277 DEV_TX_OFFLOAD_VLAN_INSERT;
1278 dev_info->rx_offload_capa = DEV_RX_OFFLOAD_VLAN_STRIP;
1284 eth_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
1287 unsigned long rx_total = 0, tx_total = 0;
1288 unsigned long rx_total_bytes = 0, tx_total_bytes = 0;
1289 struct vhost_queue *vq;
1291 for (i = 0; i < RTE_ETHDEV_QUEUE_STAT_CNTRS &&
1292 i < dev->data->nb_rx_queues; i++) {
1293 if (dev->data->rx_queues[i] == NULL)
1295 vq = dev->data->rx_queues[i];
1296 stats->q_ipackets[i] = vq->stats.pkts;
1297 rx_total += stats->q_ipackets[i];
1299 stats->q_ibytes[i] = vq->stats.bytes;
1300 rx_total_bytes += stats->q_ibytes[i];
1303 for (i = 0; i < RTE_ETHDEV_QUEUE_STAT_CNTRS &&
1304 i < dev->data->nb_tx_queues; i++) {
1305 if (dev->data->tx_queues[i] == NULL)
1307 vq = dev->data->tx_queues[i];
1308 stats->q_opackets[i] = vq->stats.pkts;
1309 tx_total += stats->q_opackets[i];
1311 stats->q_obytes[i] = vq->stats.bytes;
1312 tx_total_bytes += stats->q_obytes[i];
1315 stats->ipackets = rx_total;
1316 stats->opackets = tx_total;
1317 stats->ibytes = rx_total_bytes;
1318 stats->obytes = tx_total_bytes;
1324 eth_stats_reset(struct rte_eth_dev *dev)
1326 struct vhost_queue *vq;
1329 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1330 if (dev->data->rx_queues[i] == NULL)
1332 vq = dev->data->rx_queues[i];
1334 vq->stats.bytes = 0;
1336 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1337 if (dev->data->tx_queues[i] == NULL)
1339 vq = dev->data->tx_queues[i];
1341 vq->stats.bytes = 0;
1342 vq->stats.missed_pkts = 0;
1349 eth_queue_release(void *q)
1355 eth_tx_done_cleanup(void *txq __rte_unused, uint32_t free_cnt __rte_unused)
1358 * vHost does not hang onto mbuf. eth_vhost_tx() copies packet data
1359 * and releases mbuf, so nothing to cleanup.
1365 eth_link_update(struct rte_eth_dev *dev __rte_unused,
1366 int wait_to_complete __rte_unused)
1372 eth_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id)
1374 struct vhost_queue *vq;
1376 vq = dev->data->rx_queues[rx_queue_id];
1380 return rte_vhost_rx_queue_count(vq->vid, vq->virtqueue_id);
1383 static const struct eth_dev_ops ops = {
1384 .dev_start = eth_dev_start,
1385 .dev_stop = eth_dev_stop,
1386 .dev_close = eth_dev_close,
1387 .dev_configure = eth_dev_configure,
1388 .dev_infos_get = eth_dev_info,
1389 .rx_queue_setup = eth_rx_queue_setup,
1390 .tx_queue_setup = eth_tx_queue_setup,
1391 .rx_queue_release = eth_queue_release,
1392 .tx_queue_release = eth_queue_release,
1393 .tx_done_cleanup = eth_tx_done_cleanup,
1394 .link_update = eth_link_update,
1395 .stats_get = eth_stats_get,
1396 .stats_reset = eth_stats_reset,
1397 .xstats_reset = vhost_dev_xstats_reset,
1398 .xstats_get = vhost_dev_xstats_get,
1399 .xstats_get_names = vhost_dev_xstats_get_names,
1400 .rx_queue_intr_enable = eth_rxq_intr_enable,
1401 .rx_queue_intr_disable = eth_rxq_intr_disable,
1405 eth_dev_vhost_create(struct rte_vdev_device *dev, char *iface_name,
1406 int16_t queues, const unsigned int numa_node, uint64_t flags,
1407 uint64_t disable_flags)
1409 const char *name = rte_vdev_device_name(dev);
1410 struct rte_eth_dev_data *data;
1411 struct pmd_internal *internal = NULL;
1412 struct rte_eth_dev *eth_dev = NULL;
1413 struct rte_ether_addr *eth_addr = NULL;
1415 VHOST_LOG(INFO, "Creating VHOST-USER backend on numa socket %u\n",
1418 /* reserve an ethdev entry */
1419 eth_dev = rte_eth_vdev_allocate(dev, sizeof(*internal));
1420 if (eth_dev == NULL)
1422 data = eth_dev->data;
1424 eth_addr = rte_zmalloc_socket(name, sizeof(*eth_addr), 0, numa_node);
1425 if (eth_addr == NULL)
1427 data->mac_addrs = eth_addr;
1428 *eth_addr = base_eth_addr;
1429 eth_addr->addr_bytes[5] = eth_dev->data->port_id;
1431 /* now put it all together
1432 * - store queue data in internal,
1433 * - point eth_dev_data to internals
1434 * - and point eth_dev structure to new eth_dev_data structure
1436 internal = eth_dev->data->dev_private;
1437 internal->iface_name = rte_malloc_socket(name, strlen(iface_name) + 1,
1439 if (internal->iface_name == NULL)
1441 strcpy(internal->iface_name, iface_name);
1443 data->nb_rx_queues = queues;
1444 data->nb_tx_queues = queues;
1445 internal->max_queues = queues;
1447 internal->flags = flags;
1448 internal->disable_flags = disable_flags;
1449 data->dev_link = pmd_link;
1450 data->dev_flags = RTE_ETH_DEV_INTR_LSC |
1451 RTE_ETH_DEV_AUTOFILL_QUEUE_XSTATS;
1452 data->promiscuous = 1;
1453 data->all_multicast = 1;
1455 eth_dev->dev_ops = &ops;
1456 eth_dev->rx_queue_count = eth_rx_queue_count;
1458 /* finally assign rx and tx ops */
1459 eth_dev->rx_pkt_burst = eth_vhost_rx;
1460 eth_dev->tx_pkt_burst = eth_vhost_tx;
1462 rte_eth_dev_probing_finish(eth_dev);
1467 rte_free(internal->iface_name);
1468 rte_eth_dev_release_port(eth_dev);
1474 open_iface(const char *key __rte_unused, const char *value, void *extra_args)
1476 const char **iface_name = extra_args;
1481 *iface_name = value;
1487 open_int(const char *key __rte_unused, const char *value, void *extra_args)
1489 uint16_t *n = extra_args;
1491 if (value == NULL || extra_args == NULL)
1494 *n = (uint16_t)strtoul(value, NULL, 0);
1495 if (*n == USHRT_MAX && errno == ERANGE)
1502 rte_pmd_vhost_probe(struct rte_vdev_device *dev)
1504 struct rte_kvargs *kvlist = NULL;
1509 uint64_t disable_flags = 0;
1510 int client_mode = 0;
1511 int iommu_support = 0;
1512 int postcopy_support = 0;
1516 struct rte_eth_dev *eth_dev;
1517 const char *name = rte_vdev_device_name(dev);
1519 VHOST_LOG(INFO, "Initializing pmd_vhost for %s\n", name);
1521 if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
1522 eth_dev = rte_eth_dev_attach_secondary(name);
1524 VHOST_LOG(ERR, "Failed to probe %s\n", name);
1527 eth_dev->rx_pkt_burst = eth_vhost_rx;
1528 eth_dev->tx_pkt_burst = eth_vhost_tx;
1529 eth_dev->dev_ops = &ops;
1530 if (dev->device.numa_node == SOCKET_ID_ANY)
1531 dev->device.numa_node = rte_socket_id();
1532 eth_dev->device = &dev->device;
1533 rte_eth_dev_probing_finish(eth_dev);
1537 kvlist = rte_kvargs_parse(rte_vdev_device_args(dev), valid_arguments);
1541 if (rte_kvargs_count(kvlist, ETH_VHOST_IFACE_ARG) == 1) {
1542 ret = rte_kvargs_process(kvlist, ETH_VHOST_IFACE_ARG,
1543 &open_iface, &iface_name);
1551 if (rte_kvargs_count(kvlist, ETH_VHOST_QUEUES_ARG) == 1) {
1552 ret = rte_kvargs_process(kvlist, ETH_VHOST_QUEUES_ARG,
1553 &open_int, &queues);
1554 if (ret < 0 || queues > RTE_MAX_QUEUES_PER_PORT)
1560 if (rte_kvargs_count(kvlist, ETH_VHOST_CLIENT_ARG) == 1) {
1561 ret = rte_kvargs_process(kvlist, ETH_VHOST_CLIENT_ARG,
1562 &open_int, &client_mode);
1567 flags |= RTE_VHOST_USER_CLIENT;
1570 if (rte_kvargs_count(kvlist, ETH_VHOST_IOMMU_SUPPORT) == 1) {
1571 ret = rte_kvargs_process(kvlist, ETH_VHOST_IOMMU_SUPPORT,
1572 &open_int, &iommu_support);
1577 flags |= RTE_VHOST_USER_IOMMU_SUPPORT;
1580 if (rte_kvargs_count(kvlist, ETH_VHOST_POSTCOPY_SUPPORT) == 1) {
1581 ret = rte_kvargs_process(kvlist, ETH_VHOST_POSTCOPY_SUPPORT,
1582 &open_int, &postcopy_support);
1586 if (postcopy_support)
1587 flags |= RTE_VHOST_USER_POSTCOPY_SUPPORT;
1590 if (rte_kvargs_count(kvlist, ETH_VHOST_VIRTIO_NET_F_HOST_TSO) == 1) {
1591 ret = rte_kvargs_process(kvlist,
1592 ETH_VHOST_VIRTIO_NET_F_HOST_TSO,
1598 disable_flags |= (1ULL << VIRTIO_NET_F_HOST_TSO4);
1599 disable_flags |= (1ULL << VIRTIO_NET_F_HOST_TSO6);
1603 if (rte_kvargs_count(kvlist, ETH_VHOST_LINEAR_BUF) == 1) {
1604 ret = rte_kvargs_process(kvlist,
1605 ETH_VHOST_LINEAR_BUF,
1606 &open_int, &linear_buf);
1610 if (linear_buf == 1)
1611 flags |= RTE_VHOST_USER_LINEARBUF_SUPPORT;
1614 if (rte_kvargs_count(kvlist, ETH_VHOST_EXT_BUF) == 1) {
1615 ret = rte_kvargs_process(kvlist,
1617 &open_int, &ext_buf);
1622 flags |= RTE_VHOST_USER_EXTBUF_SUPPORT;
1625 if (dev->device.numa_node == SOCKET_ID_ANY)
1626 dev->device.numa_node = rte_socket_id();
1628 ret = eth_dev_vhost_create(dev, iface_name, queues,
1629 dev->device.numa_node, flags, disable_flags);
1631 VHOST_LOG(ERR, "Failed to create %s\n", name);
1634 rte_kvargs_free(kvlist);
1639 rte_pmd_vhost_remove(struct rte_vdev_device *dev)
1642 struct rte_eth_dev *eth_dev = NULL;
1644 name = rte_vdev_device_name(dev);
1645 VHOST_LOG(INFO, "Un-Initializing pmd_vhost for %s\n", name);
1647 /* find an ethdev entry */
1648 eth_dev = rte_eth_dev_allocated(name);
1649 if (eth_dev == NULL)
1652 eth_dev_close(eth_dev);
1653 rte_eth_dev_release_port(eth_dev);
1658 static struct rte_vdev_driver pmd_vhost_drv = {
1659 .probe = rte_pmd_vhost_probe,
1660 .remove = rte_pmd_vhost_remove,
1663 RTE_PMD_REGISTER_VDEV(net_vhost, pmd_vhost_drv);
1664 RTE_PMD_REGISTER_ALIAS(net_vhost, eth_vhost);
1665 RTE_PMD_REGISTER_PARAM_STRING(net_vhost,
1669 "iommu-support=<0|1> "
1670 "postcopy-support=<0|1> "
1672 "linear-buffer=<0|1> "
1673 "ext-buffer=<0|1>");