4 * Copyright (c) 2016 IGEL Co., Ltd.
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 IGEL Co.,Ltd. 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
25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.
38 #include <rte_ethdev_driver.h>
39 #include <rte_ethdev_vdev.h>
40 #include <rte_malloc.h>
41 #include <rte_memcpy.h>
42 #include <rte_bus_vdev.h>
43 #include <rte_kvargs.h>
44 #include <rte_vhost.h>
45 #include <rte_spinlock.h>
47 #include "rte_eth_vhost.h"
49 enum {VIRTIO_RXQ, VIRTIO_TXQ, VIRTIO_QNUM};
51 #define ETH_VHOST_IFACE_ARG "iface"
52 #define ETH_VHOST_QUEUES_ARG "queues"
53 #define ETH_VHOST_CLIENT_ARG "client"
54 #define ETH_VHOST_DEQUEUE_ZERO_COPY "dequeue-zero-copy"
55 #define ETH_VHOST_IOMMU_SUPPORT "iommu-support"
56 #define VHOST_MAX_PKT_BURST 32
58 static const char *valid_arguments[] = {
62 ETH_VHOST_DEQUEUE_ZERO_COPY,
63 ETH_VHOST_IOMMU_SUPPORT,
67 static struct ether_addr base_eth_addr = {
78 enum vhost_xstats_pkts {
79 VHOST_UNDERSIZE_PKT = 0,
84 VHOST_512_TO_1023_PKT,
85 VHOST_1024_TO_1522_PKT,
86 VHOST_1523_TO_MAX_PKT,
91 VHOST_ERRORS_FRAGMENTED,
93 VHOST_UNKNOWN_PROTOCOL,
100 uint64_t missed_pkts;
101 uint64_t xstats[VHOST_XSTATS_MAX];
106 rte_atomic32_t allow_queuing;
107 rte_atomic32_t while_queuing;
108 struct pmd_internal *internal;
109 struct rte_mempool *mb_pool;
111 uint16_t virtqueue_id;
112 struct vhost_stats stats;
115 struct pmd_internal {
116 rte_atomic32_t dev_attached;
121 rte_atomic32_t started;
125 struct internal_list {
126 TAILQ_ENTRY(internal_list) next;
127 struct rte_eth_dev *eth_dev;
130 TAILQ_HEAD(internal_list_head, internal_list);
131 static struct internal_list_head internal_list =
132 TAILQ_HEAD_INITIALIZER(internal_list);
134 static pthread_mutex_t internal_list_lock = PTHREAD_MUTEX_INITIALIZER;
136 static struct rte_eth_link pmd_link = {
138 .link_duplex = ETH_LINK_FULL_DUPLEX,
139 .link_status = ETH_LINK_DOWN
142 struct rte_vhost_vring_state {
145 bool cur[RTE_MAX_QUEUES_PER_PORT * 2];
146 bool seen[RTE_MAX_QUEUES_PER_PORT * 2];
148 unsigned int max_vring;
151 static struct rte_vhost_vring_state *vring_states[RTE_MAX_ETHPORTS];
153 #define VHOST_XSTATS_NAME_SIZE 64
155 struct vhost_xstats_name_off {
156 char name[VHOST_XSTATS_NAME_SIZE];
160 /* [rx]_is prepended to the name string here */
161 static const struct vhost_xstats_name_off vhost_rxport_stat_strings[] = {
163 offsetof(struct vhost_queue, stats.pkts)},
165 offsetof(struct vhost_queue, stats.bytes)},
167 offsetof(struct vhost_queue, stats.missed_pkts)},
168 {"broadcast_packets",
169 offsetof(struct vhost_queue, stats.xstats[VHOST_BROADCAST_PKT])},
170 {"multicast_packets",
171 offsetof(struct vhost_queue, stats.xstats[VHOST_MULTICAST_PKT])},
173 offsetof(struct vhost_queue, stats.xstats[VHOST_UNICAST_PKT])},
174 {"undersize_packets",
175 offsetof(struct vhost_queue, stats.xstats[VHOST_UNDERSIZE_PKT])},
177 offsetof(struct vhost_queue, stats.xstats[VHOST_64_PKT])},
178 {"size_65_to_127_packets",
179 offsetof(struct vhost_queue, stats.xstats[VHOST_65_TO_127_PKT])},
180 {"size_128_to_255_packets",
181 offsetof(struct vhost_queue, stats.xstats[VHOST_128_TO_255_PKT])},
182 {"size_256_to_511_packets",
183 offsetof(struct vhost_queue, stats.xstats[VHOST_256_TO_511_PKT])},
184 {"size_512_to_1023_packets",
185 offsetof(struct vhost_queue, stats.xstats[VHOST_512_TO_1023_PKT])},
186 {"size_1024_to_1522_packets",
187 offsetof(struct vhost_queue, stats.xstats[VHOST_1024_TO_1522_PKT])},
188 {"size_1523_to_max_packets",
189 offsetof(struct vhost_queue, stats.xstats[VHOST_1523_TO_MAX_PKT])},
190 {"errors_with_bad_CRC",
191 offsetof(struct vhost_queue, stats.xstats[VHOST_ERRORS_PKT])},
192 {"fragmented_errors",
193 offsetof(struct vhost_queue, stats.xstats[VHOST_ERRORS_FRAGMENTED])},
195 offsetof(struct vhost_queue, stats.xstats[VHOST_ERRORS_JABBER])},
196 {"unknown_protos_packets",
197 offsetof(struct vhost_queue, stats.xstats[VHOST_UNKNOWN_PROTOCOL])},
200 /* [tx]_ is prepended to the name string here */
201 static const struct vhost_xstats_name_off vhost_txport_stat_strings[] = {
203 offsetof(struct vhost_queue, stats.pkts)},
205 offsetof(struct vhost_queue, stats.bytes)},
207 offsetof(struct vhost_queue, stats.missed_pkts)},
208 {"broadcast_packets",
209 offsetof(struct vhost_queue, stats.xstats[VHOST_BROADCAST_PKT])},
210 {"multicast_packets",
211 offsetof(struct vhost_queue, stats.xstats[VHOST_MULTICAST_PKT])},
213 offsetof(struct vhost_queue, stats.xstats[VHOST_UNICAST_PKT])},
214 {"undersize_packets",
215 offsetof(struct vhost_queue, stats.xstats[VHOST_UNDERSIZE_PKT])},
217 offsetof(struct vhost_queue, stats.xstats[VHOST_64_PKT])},
218 {"size_65_to_127_packets",
219 offsetof(struct vhost_queue, stats.xstats[VHOST_65_TO_127_PKT])},
220 {"size_128_to_255_packets",
221 offsetof(struct vhost_queue, stats.xstats[VHOST_128_TO_255_PKT])},
222 {"size_256_to_511_packets",
223 offsetof(struct vhost_queue, stats.xstats[VHOST_256_TO_511_PKT])},
224 {"size_512_to_1023_packets",
225 offsetof(struct vhost_queue, stats.xstats[VHOST_512_TO_1023_PKT])},
226 {"size_1024_to_1522_packets",
227 offsetof(struct vhost_queue, stats.xstats[VHOST_1024_TO_1522_PKT])},
228 {"size_1523_to_max_packets",
229 offsetof(struct vhost_queue, stats.xstats[VHOST_1523_TO_MAX_PKT])},
230 {"errors_with_bad_CRC",
231 offsetof(struct vhost_queue, stats.xstats[VHOST_ERRORS_PKT])},
234 #define VHOST_NB_XSTATS_RXPORT (sizeof(vhost_rxport_stat_strings) / \
235 sizeof(vhost_rxport_stat_strings[0]))
237 #define VHOST_NB_XSTATS_TXPORT (sizeof(vhost_txport_stat_strings) / \
238 sizeof(vhost_txport_stat_strings[0]))
241 vhost_dev_xstats_reset(struct rte_eth_dev *dev)
243 struct vhost_queue *vq = NULL;
246 for (i = 0; i < dev->data->nb_rx_queues; i++) {
247 vq = dev->data->rx_queues[i];
250 memset(&vq->stats, 0, sizeof(vq->stats));
252 for (i = 0; i < dev->data->nb_tx_queues; i++) {
253 vq = dev->data->tx_queues[i];
256 memset(&vq->stats, 0, sizeof(vq->stats));
261 vhost_dev_xstats_get_names(struct rte_eth_dev *dev __rte_unused,
262 struct rte_eth_xstat_name *xstats_names,
263 unsigned int limit __rte_unused)
267 int nstats = VHOST_NB_XSTATS_RXPORT + VHOST_NB_XSTATS_TXPORT;
271 for (t = 0; t < VHOST_NB_XSTATS_RXPORT; t++) {
272 snprintf(xstats_names[count].name,
273 sizeof(xstats_names[count].name),
274 "rx_%s", vhost_rxport_stat_strings[t].name);
277 for (t = 0; t < VHOST_NB_XSTATS_TXPORT; t++) {
278 snprintf(xstats_names[count].name,
279 sizeof(xstats_names[count].name),
280 "tx_%s", vhost_txport_stat_strings[t].name);
287 vhost_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats,
292 unsigned int count = 0;
293 struct vhost_queue *vq = NULL;
294 unsigned int nxstats = VHOST_NB_XSTATS_RXPORT + VHOST_NB_XSTATS_TXPORT;
299 for (i = 0; i < dev->data->nb_rx_queues; i++) {
300 vq = dev->data->rx_queues[i];
303 vq->stats.xstats[VHOST_UNICAST_PKT] = vq->stats.pkts
304 - (vq->stats.xstats[VHOST_BROADCAST_PKT]
305 + vq->stats.xstats[VHOST_MULTICAST_PKT]);
307 for (i = 0; i < dev->data->nb_tx_queues; i++) {
308 vq = dev->data->tx_queues[i];
311 vq->stats.xstats[VHOST_UNICAST_PKT] = vq->stats.pkts
312 + vq->stats.missed_pkts
313 - (vq->stats.xstats[VHOST_BROADCAST_PKT]
314 + vq->stats.xstats[VHOST_MULTICAST_PKT]);
316 for (t = 0; t < VHOST_NB_XSTATS_RXPORT; t++) {
317 xstats[count].value = 0;
318 for (i = 0; i < dev->data->nb_rx_queues; i++) {
319 vq = dev->data->rx_queues[i];
322 xstats[count].value +=
323 *(uint64_t *)(((char *)vq)
324 + vhost_rxport_stat_strings[t].offset);
326 xstats[count].id = count;
329 for (t = 0; t < VHOST_NB_XSTATS_TXPORT; t++) {
330 xstats[count].value = 0;
331 for (i = 0; i < dev->data->nb_tx_queues; i++) {
332 vq = dev->data->tx_queues[i];
335 xstats[count].value +=
336 *(uint64_t *)(((char *)vq)
337 + vhost_txport_stat_strings[t].offset);
339 xstats[count].id = count;
346 vhost_count_multicast_broadcast(struct vhost_queue *vq,
347 struct rte_mbuf *mbuf)
349 struct ether_addr *ea = NULL;
350 struct vhost_stats *pstats = &vq->stats;
352 ea = rte_pktmbuf_mtod(mbuf, struct ether_addr *);
353 if (is_multicast_ether_addr(ea)) {
354 if (is_broadcast_ether_addr(ea))
355 pstats->xstats[VHOST_BROADCAST_PKT]++;
357 pstats->xstats[VHOST_MULTICAST_PKT]++;
362 vhost_update_packet_xstats(struct vhost_queue *vq,
363 struct rte_mbuf **bufs,
366 uint32_t pkt_len = 0;
369 struct vhost_stats *pstats = &vq->stats;
371 for (i = 0; i < count ; i++) {
372 pkt_len = bufs[i]->pkt_len;
374 pstats->xstats[VHOST_64_PKT]++;
375 } else if (pkt_len > 64 && pkt_len < 1024) {
376 index = (sizeof(pkt_len) * 8)
377 - __builtin_clz(pkt_len) - 5;
378 pstats->xstats[index]++;
381 pstats->xstats[VHOST_UNDERSIZE_PKT]++;
382 else if (pkt_len <= 1522)
383 pstats->xstats[VHOST_1024_TO_1522_PKT]++;
384 else if (pkt_len > 1522)
385 pstats->xstats[VHOST_1523_TO_MAX_PKT]++;
387 vhost_count_multicast_broadcast(vq, bufs[i]);
392 eth_vhost_rx(void *q, struct rte_mbuf **bufs, uint16_t nb_bufs)
394 struct vhost_queue *r = q;
395 uint16_t i, nb_rx = 0;
396 uint16_t nb_receive = nb_bufs;
398 if (unlikely(rte_atomic32_read(&r->allow_queuing) == 0))
401 rte_atomic32_set(&r->while_queuing, 1);
403 if (unlikely(rte_atomic32_read(&r->allow_queuing) == 0))
406 /* Dequeue packets from guest TX queue */
409 uint16_t num = (uint16_t)RTE_MIN(nb_receive,
410 VHOST_MAX_PKT_BURST);
412 nb_pkts = rte_vhost_dequeue_burst(r->vid, r->virtqueue_id,
413 r->mb_pool, &bufs[nb_rx],
417 nb_receive -= nb_pkts;
422 r->stats.pkts += nb_rx;
424 for (i = 0; likely(i < nb_rx); i++) {
425 bufs[i]->port = r->port;
426 bufs[i]->ol_flags = 0;
427 bufs[i]->vlan_tci = 0;
429 if (r->internal->vlan_strip)
430 rte_vlan_strip(bufs[i]);
432 r->stats.bytes += bufs[i]->pkt_len;
435 vhost_update_packet_xstats(r, bufs, nb_rx);
438 rte_atomic32_set(&r->while_queuing, 0);
444 eth_vhost_tx(void *q, struct rte_mbuf **bufs, uint16_t nb_bufs)
446 struct vhost_queue *r = q;
447 uint16_t i, nb_tx = 0;
448 uint16_t nb_send = 0;
450 if (unlikely(rte_atomic32_read(&r->allow_queuing) == 0))
453 rte_atomic32_set(&r->while_queuing, 1);
455 if (unlikely(rte_atomic32_read(&r->allow_queuing) == 0))
458 for (i = 0; i < nb_bufs; i++) {
459 struct rte_mbuf *m = bufs[i];
461 /* Do VLAN tag insertion */
462 if (m->ol_flags & PKT_TX_VLAN_PKT) {
463 int error = rte_vlan_insert(&m);
464 if (unlikely(error)) {
474 /* Enqueue packets to guest RX queue */
477 uint16_t num = (uint16_t)RTE_MIN(nb_send,
478 VHOST_MAX_PKT_BURST);
480 nb_pkts = rte_vhost_enqueue_burst(r->vid, r->virtqueue_id,
489 r->stats.pkts += nb_tx;
490 r->stats.missed_pkts += nb_bufs - nb_tx;
492 for (i = 0; likely(i < nb_tx); i++)
493 r->stats.bytes += bufs[i]->pkt_len;
495 vhost_update_packet_xstats(r, bufs, nb_tx);
497 /* According to RFC2863 page42 section ifHCOutMulticastPkts and
498 * ifHCOutBroadcastPkts, the counters "multicast" and "broadcast"
499 * are increased when packets are not transmitted successfully.
501 for (i = nb_tx; i < nb_bufs; i++)
502 vhost_count_multicast_broadcast(r, bufs[i]);
504 for (i = 0; likely(i < nb_tx); i++)
505 rte_pktmbuf_free(bufs[i]);
507 rte_atomic32_set(&r->while_queuing, 0);
513 eth_dev_configure(struct rte_eth_dev *dev __rte_unused)
515 struct pmd_internal *internal = dev->data->dev_private;
516 const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
518 internal->vlan_strip = rxmode->hw_vlan_strip;
520 if (rxmode->hw_vlan_filter)
521 RTE_LOG(WARNING, PMD,
522 "vhost(%s): vlan filtering not available\n",
528 static inline struct internal_list *
529 find_internal_resource(char *ifname)
532 struct internal_list *list;
533 struct pmd_internal *internal;
538 pthread_mutex_lock(&internal_list_lock);
540 TAILQ_FOREACH(list, &internal_list, next) {
541 internal = list->eth_dev->data->dev_private;
542 if (!strcmp(internal->iface_name, ifname)) {
548 pthread_mutex_unlock(&internal_list_lock);
557 eth_rxq_intr_enable(struct rte_eth_dev *dev, uint16_t qid)
559 struct rte_vhost_vring vring;
560 struct vhost_queue *vq;
563 vq = dev->data->rx_queues[qid];
565 RTE_LOG(ERR, PMD, "rxq%d is not setup yet\n", qid);
569 ret = rte_vhost_get_vhost_vring(vq->vid, (qid << 1) + 1, &vring);
571 RTE_LOG(ERR, PMD, "Failed to get rxq%d's vring\n", qid);
574 RTE_LOG(INFO, PMD, "Enable interrupt for rxq%d\n", qid);
575 rte_vhost_enable_guest_notification(vq->vid, (qid << 1) + 1, 1);
582 eth_rxq_intr_disable(struct rte_eth_dev *dev, uint16_t qid)
584 struct rte_vhost_vring vring;
585 struct vhost_queue *vq;
588 vq = dev->data->rx_queues[qid];
590 RTE_LOG(ERR, PMD, "rxq%d is not setup yet\n", qid);
594 ret = rte_vhost_get_vhost_vring(vq->vid, (qid << 1) + 1, &vring);
596 RTE_LOG(ERR, PMD, "Failed to get rxq%d's vring", qid);
599 RTE_LOG(INFO, PMD, "Disable interrupt for rxq%d\n", qid);
600 rte_vhost_enable_guest_notification(vq->vid, (qid << 1) + 1, 0);
607 eth_vhost_uninstall_intr(struct rte_eth_dev *dev)
609 struct rte_intr_handle *intr_handle = dev->intr_handle;
612 if (intr_handle->intr_vec)
613 free(intr_handle->intr_vec);
617 dev->intr_handle = NULL;
621 eth_vhost_install_intr(struct rte_eth_dev *dev)
623 struct rte_vhost_vring vring;
624 struct vhost_queue *vq;
626 int nb_rxq = dev->data->nb_rx_queues;
630 /* uninstall firstly if we are reconnecting */
631 if (dev->intr_handle)
632 eth_vhost_uninstall_intr(dev);
634 dev->intr_handle = malloc(sizeof(*dev->intr_handle));
635 if (!dev->intr_handle) {
636 RTE_LOG(ERR, PMD, "Fail to allocate intr_handle\n");
639 memset(dev->intr_handle, 0, sizeof(*dev->intr_handle));
641 dev->intr_handle->efd_counter_size = sizeof(uint64_t);
643 dev->intr_handle->intr_vec =
644 malloc(nb_rxq * sizeof(dev->intr_handle->intr_vec[0]));
646 if (!dev->intr_handle->intr_vec) {
648 "Failed to allocate memory for interrupt vector\n");
649 free(dev->intr_handle);
653 RTE_LOG(INFO, PMD, "Prepare intr vec\n");
654 for (i = 0; i < nb_rxq; i++) {
655 vq = dev->data->rx_queues[i];
657 RTE_LOG(INFO, PMD, "rxq-%d not setup yet, skip!\n", i);
661 ret = rte_vhost_get_vhost_vring(vq->vid, (i << 1) + 1, &vring);
664 "Failed to get rxq-%d's vring, skip!\n", i);
668 if (vring.kickfd < 0) {
670 "rxq-%d's kickfd is invalid, skip!\n", i);
673 dev->intr_handle->intr_vec[i] = RTE_INTR_VEC_RXTX_OFFSET + i;
674 dev->intr_handle->efds[i] = vring.kickfd;
676 RTE_LOG(INFO, PMD, "Installed intr vec for rxq-%d\n", i);
679 dev->intr_handle->nb_efd = count;
680 dev->intr_handle->max_intr = count + 1;
681 dev->intr_handle->type = RTE_INTR_HANDLE_VDEV;
687 update_queuing_status(struct rte_eth_dev *dev)
689 struct pmd_internal *internal = dev->data->dev_private;
690 struct vhost_queue *vq;
692 int allow_queuing = 1;
694 if (!dev->data->rx_queues || !dev->data->tx_queues)
697 if (rte_atomic32_read(&internal->started) == 0 ||
698 rte_atomic32_read(&internal->dev_attached) == 0)
701 /* Wait until rx/tx_pkt_burst stops accessing vhost device */
702 for (i = 0; i < dev->data->nb_rx_queues; i++) {
703 vq = dev->data->rx_queues[i];
706 rte_atomic32_set(&vq->allow_queuing, allow_queuing);
707 while (rte_atomic32_read(&vq->while_queuing))
711 for (i = 0; i < dev->data->nb_tx_queues; i++) {
712 vq = dev->data->tx_queues[i];
715 rte_atomic32_set(&vq->allow_queuing, allow_queuing);
716 while (rte_atomic32_read(&vq->while_queuing))
722 queue_setup(struct rte_eth_dev *eth_dev, struct pmd_internal *internal)
724 struct vhost_queue *vq;
727 for (i = 0; i < eth_dev->data->nb_rx_queues; i++) {
728 vq = eth_dev->data->rx_queues[i];
731 vq->vid = internal->vid;
732 vq->internal = internal;
733 vq->port = eth_dev->data->port_id;
735 for (i = 0; i < eth_dev->data->nb_tx_queues; i++) {
736 vq = eth_dev->data->tx_queues[i];
739 vq->vid = internal->vid;
740 vq->internal = internal;
741 vq->port = eth_dev->data->port_id;
748 struct rte_eth_dev *eth_dev;
749 struct internal_list *list;
750 struct pmd_internal *internal;
751 struct rte_eth_conf *dev_conf;
753 char ifname[PATH_MAX];
754 #ifdef RTE_LIBRTE_VHOST_NUMA
758 rte_vhost_get_ifname(vid, ifname, sizeof(ifname));
759 list = find_internal_resource(ifname);
761 RTE_LOG(INFO, PMD, "Invalid device name: %s\n", ifname);
765 eth_dev = list->eth_dev;
766 internal = eth_dev->data->dev_private;
767 dev_conf = ð_dev->data->dev_conf;
769 #ifdef RTE_LIBRTE_VHOST_NUMA
770 newnode = rte_vhost_get_numa_node(vid);
772 eth_dev->data->numa_node = newnode;
776 if (rte_atomic32_read(&internal->started) == 1) {
777 queue_setup(eth_dev, internal);
779 if (dev_conf->intr_conf.rxq) {
780 if (eth_vhost_install_intr(eth_dev) < 0) {
782 "Failed to install interrupt handler.");
787 RTE_LOG(INFO, PMD, "RX/TX queues not exist yet\n");
790 for (i = 0; i < rte_vhost_get_vring_num(vid); i++)
791 rte_vhost_enable_guest_notification(vid, i, 0);
793 rte_vhost_get_mtu(vid, ð_dev->data->mtu);
795 eth_dev->data->dev_link.link_status = ETH_LINK_UP;
797 rte_atomic32_set(&internal->dev_attached, 1);
798 update_queuing_status(eth_dev);
800 RTE_LOG(INFO, PMD, "Vhost device %d created\n", vid);
802 _rte_eth_dev_callback_process(eth_dev, RTE_ETH_EVENT_INTR_LSC, NULL);
808 destroy_device(int vid)
810 struct rte_eth_dev *eth_dev;
811 struct pmd_internal *internal;
812 struct vhost_queue *vq;
813 struct internal_list *list;
814 char ifname[PATH_MAX];
816 struct rte_vhost_vring_state *state;
818 rte_vhost_get_ifname(vid, ifname, sizeof(ifname));
819 list = find_internal_resource(ifname);
821 RTE_LOG(ERR, PMD, "Invalid interface name: %s\n", ifname);
824 eth_dev = list->eth_dev;
825 internal = eth_dev->data->dev_private;
827 rte_atomic32_set(&internal->dev_attached, 0);
828 update_queuing_status(eth_dev);
830 eth_dev->data->dev_link.link_status = ETH_LINK_DOWN;
832 if (eth_dev->data->rx_queues && eth_dev->data->tx_queues) {
833 for (i = 0; i < eth_dev->data->nb_rx_queues; i++) {
834 vq = eth_dev->data->rx_queues[i];
839 for (i = 0; i < eth_dev->data->nb_tx_queues; i++) {
840 vq = eth_dev->data->tx_queues[i];
847 state = vring_states[eth_dev->data->port_id];
848 rte_spinlock_lock(&state->lock);
849 for (i = 0; i <= state->max_vring; i++) {
850 state->cur[i] = false;
851 state->seen[i] = false;
853 state->max_vring = 0;
854 rte_spinlock_unlock(&state->lock);
856 RTE_LOG(INFO, PMD, "Vhost device %d destroyed\n", vid);
857 eth_vhost_uninstall_intr(eth_dev);
859 _rte_eth_dev_callback_process(eth_dev, RTE_ETH_EVENT_INTR_LSC, NULL);
863 vring_state_changed(int vid, uint16_t vring, int enable)
865 struct rte_vhost_vring_state *state;
866 struct rte_eth_dev *eth_dev;
867 struct internal_list *list;
868 char ifname[PATH_MAX];
870 rte_vhost_get_ifname(vid, ifname, sizeof(ifname));
871 list = find_internal_resource(ifname);
873 RTE_LOG(ERR, PMD, "Invalid interface name: %s\n", ifname);
877 eth_dev = list->eth_dev;
879 state = vring_states[eth_dev->data->port_id];
880 rte_spinlock_lock(&state->lock);
881 state->cur[vring] = enable;
882 state->max_vring = RTE_MAX(vring, state->max_vring);
883 rte_spinlock_unlock(&state->lock);
885 RTE_LOG(INFO, PMD, "vring%u is %s\n",
886 vring, enable ? "enabled" : "disabled");
888 _rte_eth_dev_callback_process(eth_dev, RTE_ETH_EVENT_QUEUE_STATE, NULL);
893 static struct vhost_device_ops vhost_ops = {
894 .new_device = new_device,
895 .destroy_device = destroy_device,
896 .vring_state_changed = vring_state_changed,
900 rte_eth_vhost_get_queue_event(uint16_t port_id,
901 struct rte_eth_vhost_queue_event *event)
903 struct rte_vhost_vring_state *state;
907 if (port_id >= RTE_MAX_ETHPORTS) {
908 RTE_LOG(ERR, PMD, "Invalid port id\n");
912 state = vring_states[port_id];
914 RTE_LOG(ERR, PMD, "Unused port\n");
918 rte_spinlock_lock(&state->lock);
919 for (i = 0; i <= state->max_vring; i++) {
920 idx = state->index++ % (state->max_vring + 1);
922 if (state->cur[idx] != state->seen[idx]) {
923 state->seen[idx] = state->cur[idx];
924 event->queue_id = idx / 2;
926 event->enable = state->cur[idx];
927 rte_spinlock_unlock(&state->lock);
931 rte_spinlock_unlock(&state->lock);
937 rte_eth_vhost_get_vid_from_port_id(uint16_t port_id)
939 struct internal_list *list;
940 struct rte_eth_dev *eth_dev;
941 struct vhost_queue *vq;
944 if (!rte_eth_dev_is_valid_port(port_id))
947 pthread_mutex_lock(&internal_list_lock);
949 TAILQ_FOREACH(list, &internal_list, next) {
950 eth_dev = list->eth_dev;
951 if (eth_dev->data->port_id == port_id) {
952 vq = eth_dev->data->rx_queues[0];
960 pthread_mutex_unlock(&internal_list_lock);
966 eth_dev_start(struct rte_eth_dev *eth_dev)
968 struct pmd_internal *internal = eth_dev->data->dev_private;
969 struct rte_eth_conf *dev_conf = ð_dev->data->dev_conf;
971 queue_setup(eth_dev, internal);
973 if (rte_atomic32_read(&internal->dev_attached) == 1) {
974 if (dev_conf->intr_conf.rxq) {
975 if (eth_vhost_install_intr(eth_dev) < 0) {
977 "Failed to install interrupt handler.");
983 rte_atomic32_set(&internal->started, 1);
984 update_queuing_status(eth_dev);
990 eth_dev_stop(struct rte_eth_dev *dev)
992 struct pmd_internal *internal = dev->data->dev_private;
994 rte_atomic32_set(&internal->started, 0);
995 update_queuing_status(dev);
999 eth_dev_close(struct rte_eth_dev *dev)
1001 struct pmd_internal *internal;
1002 struct internal_list *list;
1005 internal = dev->data->dev_private;
1011 rte_vhost_driver_unregister(internal->iface_name);
1013 list = find_internal_resource(internal->iface_name);
1017 pthread_mutex_lock(&internal_list_lock);
1018 TAILQ_REMOVE(&internal_list, list, next);
1019 pthread_mutex_unlock(&internal_list_lock);
1022 if (dev->data->rx_queues)
1023 for (i = 0; i < dev->data->nb_rx_queues; i++)
1024 rte_free(dev->data->rx_queues[i]);
1026 if (dev->data->tx_queues)
1027 for (i = 0; i < dev->data->nb_tx_queues; i++)
1028 rte_free(dev->data->tx_queues[i]);
1030 rte_free(dev->data->mac_addrs);
1031 free(internal->dev_name);
1032 free(internal->iface_name);
1035 dev->data->dev_private = NULL;
1039 eth_rx_queue_setup(struct rte_eth_dev *dev, uint16_t rx_queue_id,
1040 uint16_t nb_rx_desc __rte_unused,
1041 unsigned int socket_id,
1042 const struct rte_eth_rxconf *rx_conf __rte_unused,
1043 struct rte_mempool *mb_pool)
1045 struct vhost_queue *vq;
1047 vq = rte_zmalloc_socket(NULL, sizeof(struct vhost_queue),
1048 RTE_CACHE_LINE_SIZE, socket_id);
1050 RTE_LOG(ERR, PMD, "Failed to allocate memory for rx queue\n");
1054 vq->mb_pool = mb_pool;
1055 vq->virtqueue_id = rx_queue_id * VIRTIO_QNUM + VIRTIO_TXQ;
1056 dev->data->rx_queues[rx_queue_id] = vq;
1062 eth_tx_queue_setup(struct rte_eth_dev *dev, uint16_t tx_queue_id,
1063 uint16_t nb_tx_desc __rte_unused,
1064 unsigned int socket_id,
1065 const struct rte_eth_txconf *tx_conf __rte_unused)
1067 struct vhost_queue *vq;
1069 vq = rte_zmalloc_socket(NULL, sizeof(struct vhost_queue),
1070 RTE_CACHE_LINE_SIZE, socket_id);
1072 RTE_LOG(ERR, PMD, "Failed to allocate memory for tx queue\n");
1076 vq->virtqueue_id = tx_queue_id * VIRTIO_QNUM + VIRTIO_RXQ;
1077 dev->data->tx_queues[tx_queue_id] = vq;
1083 eth_dev_info(struct rte_eth_dev *dev,
1084 struct rte_eth_dev_info *dev_info)
1086 struct pmd_internal *internal;
1088 internal = dev->data->dev_private;
1089 if (internal == NULL) {
1090 RTE_LOG(ERR, PMD, "Invalid device specified\n");
1094 dev_info->max_mac_addrs = 1;
1095 dev_info->max_rx_pktlen = (uint32_t)-1;
1096 dev_info->max_rx_queues = internal->max_queues;
1097 dev_info->max_tx_queues = internal->max_queues;
1098 dev_info->min_rx_bufsize = 0;
1102 eth_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
1105 unsigned long rx_total = 0, tx_total = 0, tx_missed_total = 0;
1106 unsigned long rx_total_bytes = 0, tx_total_bytes = 0;
1107 struct vhost_queue *vq;
1109 for (i = 0; i < RTE_ETHDEV_QUEUE_STAT_CNTRS &&
1110 i < dev->data->nb_rx_queues; i++) {
1111 if (dev->data->rx_queues[i] == NULL)
1113 vq = dev->data->rx_queues[i];
1114 stats->q_ipackets[i] = vq->stats.pkts;
1115 rx_total += stats->q_ipackets[i];
1117 stats->q_ibytes[i] = vq->stats.bytes;
1118 rx_total_bytes += stats->q_ibytes[i];
1121 for (i = 0; i < RTE_ETHDEV_QUEUE_STAT_CNTRS &&
1122 i < dev->data->nb_tx_queues; i++) {
1123 if (dev->data->tx_queues[i] == NULL)
1125 vq = dev->data->tx_queues[i];
1126 stats->q_opackets[i] = vq->stats.pkts;
1127 tx_missed_total += vq->stats.missed_pkts;
1128 tx_total += stats->q_opackets[i];
1130 stats->q_obytes[i] = vq->stats.bytes;
1131 tx_total_bytes += stats->q_obytes[i];
1134 stats->ipackets = rx_total;
1135 stats->opackets = tx_total;
1136 stats->oerrors = tx_missed_total;
1137 stats->ibytes = rx_total_bytes;
1138 stats->obytes = tx_total_bytes;
1144 eth_stats_reset(struct rte_eth_dev *dev)
1146 struct vhost_queue *vq;
1149 for (i = 0; i < dev->data->nb_rx_queues; i++) {
1150 if (dev->data->rx_queues[i] == NULL)
1152 vq = dev->data->rx_queues[i];
1154 vq->stats.bytes = 0;
1156 for (i = 0; i < dev->data->nb_tx_queues; i++) {
1157 if (dev->data->tx_queues[i] == NULL)
1159 vq = dev->data->tx_queues[i];
1161 vq->stats.bytes = 0;
1162 vq->stats.missed_pkts = 0;
1167 eth_queue_release(void *q)
1173 eth_tx_done_cleanup(void *txq __rte_unused, uint32_t free_cnt __rte_unused)
1176 * vHost does not hang onto mbuf. eth_vhost_tx() copies packet data
1177 * and releases mbuf, so nothing to cleanup.
1183 eth_link_update(struct rte_eth_dev *dev __rte_unused,
1184 int wait_to_complete __rte_unused)
1190 eth_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id)
1192 struct vhost_queue *vq;
1194 vq = dev->data->rx_queues[rx_queue_id];
1198 return rte_vhost_rx_queue_count(vq->vid, vq->virtqueue_id);
1201 static const struct eth_dev_ops ops = {
1202 .dev_start = eth_dev_start,
1203 .dev_stop = eth_dev_stop,
1204 .dev_close = eth_dev_close,
1205 .dev_configure = eth_dev_configure,
1206 .dev_infos_get = eth_dev_info,
1207 .rx_queue_setup = eth_rx_queue_setup,
1208 .tx_queue_setup = eth_tx_queue_setup,
1209 .rx_queue_release = eth_queue_release,
1210 .tx_queue_release = eth_queue_release,
1211 .tx_done_cleanup = eth_tx_done_cleanup,
1212 .rx_queue_count = eth_rx_queue_count,
1213 .link_update = eth_link_update,
1214 .stats_get = eth_stats_get,
1215 .stats_reset = eth_stats_reset,
1216 .xstats_reset = vhost_dev_xstats_reset,
1217 .xstats_get = vhost_dev_xstats_get,
1218 .xstats_get_names = vhost_dev_xstats_get_names,
1219 .rx_queue_intr_enable = eth_rxq_intr_enable,
1220 .rx_queue_intr_disable = eth_rxq_intr_disable,
1223 static struct rte_vdev_driver pmd_vhost_drv;
1226 eth_dev_vhost_create(struct rte_vdev_device *dev, char *iface_name,
1227 int16_t queues, const unsigned int numa_node, uint64_t flags)
1229 const char *name = rte_vdev_device_name(dev);
1230 struct rte_eth_dev_data *data;
1231 struct pmd_internal *internal = NULL;
1232 struct rte_eth_dev *eth_dev = NULL;
1233 struct ether_addr *eth_addr = NULL;
1234 struct rte_vhost_vring_state *vring_state = NULL;
1235 struct internal_list *list = NULL;
1237 RTE_LOG(INFO, PMD, "Creating VHOST-USER backend on numa socket %u\n",
1240 list = rte_zmalloc_socket(name, sizeof(*list), 0, numa_node);
1244 /* reserve an ethdev entry */
1245 eth_dev = rte_eth_vdev_allocate(dev, sizeof(*internal));
1246 if (eth_dev == NULL)
1249 eth_addr = rte_zmalloc_socket(name, sizeof(*eth_addr), 0, numa_node);
1250 if (eth_addr == NULL)
1252 *eth_addr = base_eth_addr;
1253 eth_addr->addr_bytes[5] = eth_dev->data->port_id;
1255 vring_state = rte_zmalloc_socket(name,
1256 sizeof(*vring_state), 0, numa_node);
1257 if (vring_state == NULL)
1260 /* now put it all together
1261 * - store queue data in internal,
1262 * - point eth_dev_data to internals
1263 * - and point eth_dev structure to new eth_dev_data structure
1265 internal = eth_dev->data->dev_private;
1266 internal->dev_name = strdup(name);
1267 if (internal->dev_name == NULL)
1269 internal->iface_name = strdup(iface_name);
1270 if (internal->iface_name == NULL)
1273 list->eth_dev = eth_dev;
1274 pthread_mutex_lock(&internal_list_lock);
1275 TAILQ_INSERT_TAIL(&internal_list, list, next);
1276 pthread_mutex_unlock(&internal_list_lock);
1278 rte_spinlock_init(&vring_state->lock);
1279 vring_states[eth_dev->data->port_id] = vring_state;
1281 data = eth_dev->data;
1282 data->nb_rx_queues = queues;
1283 data->nb_tx_queues = queues;
1284 internal->max_queues = queues;
1285 data->dev_link = pmd_link;
1286 data->mac_addrs = eth_addr;
1287 data->dev_flags = RTE_ETH_DEV_INTR_LSC;
1289 eth_dev->dev_ops = &ops;
1291 /* finally assign rx and tx ops */
1292 eth_dev->rx_pkt_burst = eth_vhost_rx;
1293 eth_dev->tx_pkt_burst = eth_vhost_tx;
1295 if (rte_vhost_driver_register(iface_name, flags))
1298 if (rte_vhost_driver_callback_register(iface_name, &vhost_ops) < 0) {
1299 RTE_LOG(ERR, PMD, "Can't register callbacks\n");
1303 if (rte_vhost_driver_start(iface_name) < 0) {
1304 RTE_LOG(ERR, PMD, "Failed to start driver for %s\n",
1309 return data->port_id;
1313 free(internal->iface_name);
1314 free(internal->dev_name);
1316 rte_free(vring_state);
1319 rte_eth_dev_release_port(eth_dev);
1327 open_iface(const char *key __rte_unused, const char *value, void *extra_args)
1329 const char **iface_name = extra_args;
1334 *iface_name = value;
1340 open_int(const char *key __rte_unused, const char *value, void *extra_args)
1342 uint16_t *n = extra_args;
1344 if (value == NULL || extra_args == NULL)
1347 *n = (uint16_t)strtoul(value, NULL, 0);
1348 if (*n == USHRT_MAX && errno == ERANGE)
1355 rte_pmd_vhost_probe(struct rte_vdev_device *dev)
1357 struct rte_kvargs *kvlist = NULL;
1362 int client_mode = 0;
1363 int dequeue_zero_copy = 0;
1364 int iommu_support = 0;
1365 struct rte_eth_dev *eth_dev;
1366 const char *name = rte_vdev_device_name(dev);
1368 RTE_LOG(INFO, PMD, "Initializing pmd_vhost for %s\n", name);
1370 if (rte_eal_process_type() == RTE_PROC_SECONDARY &&
1371 strlen(rte_vdev_device_args(dev)) == 0) {
1372 eth_dev = rte_eth_dev_attach_secondary(name);
1374 RTE_LOG(ERR, PMD, "Failed to probe %s\n", name);
1377 /* TODO: request info from primary to set up Rx and Tx */
1378 eth_dev->dev_ops = &ops;
1382 kvlist = rte_kvargs_parse(rte_vdev_device_args(dev), valid_arguments);
1386 if (rte_kvargs_count(kvlist, ETH_VHOST_IFACE_ARG) == 1) {
1387 ret = rte_kvargs_process(kvlist, ETH_VHOST_IFACE_ARG,
1388 &open_iface, &iface_name);
1396 if (rte_kvargs_count(kvlist, ETH_VHOST_QUEUES_ARG) == 1) {
1397 ret = rte_kvargs_process(kvlist, ETH_VHOST_QUEUES_ARG,
1398 &open_int, &queues);
1399 if (ret < 0 || queues > RTE_MAX_QUEUES_PER_PORT)
1405 if (rte_kvargs_count(kvlist, ETH_VHOST_CLIENT_ARG) == 1) {
1406 ret = rte_kvargs_process(kvlist, ETH_VHOST_CLIENT_ARG,
1407 &open_int, &client_mode);
1412 flags |= RTE_VHOST_USER_CLIENT;
1415 if (rte_kvargs_count(kvlist, ETH_VHOST_DEQUEUE_ZERO_COPY) == 1) {
1416 ret = rte_kvargs_process(kvlist, ETH_VHOST_DEQUEUE_ZERO_COPY,
1417 &open_int, &dequeue_zero_copy);
1421 if (dequeue_zero_copy)
1422 flags |= RTE_VHOST_USER_DEQUEUE_ZERO_COPY;
1425 if (rte_kvargs_count(kvlist, ETH_VHOST_IOMMU_SUPPORT) == 1) {
1426 ret = rte_kvargs_process(kvlist, ETH_VHOST_IOMMU_SUPPORT,
1427 &open_int, &iommu_support);
1432 flags |= RTE_VHOST_USER_IOMMU_SUPPORT;
1435 if (dev->device.numa_node == SOCKET_ID_ANY)
1436 dev->device.numa_node = rte_socket_id();
1438 eth_dev_vhost_create(dev, iface_name, queues, dev->device.numa_node,
1442 rte_kvargs_free(kvlist);
1447 rte_pmd_vhost_remove(struct rte_vdev_device *dev)
1450 struct rte_eth_dev *eth_dev = NULL;
1452 name = rte_vdev_device_name(dev);
1453 RTE_LOG(INFO, PMD, "Un-Initializing pmd_vhost for %s\n", name);
1455 /* find an ethdev entry */
1456 eth_dev = rte_eth_dev_allocated(name);
1457 if (eth_dev == NULL)
1460 eth_dev_close(eth_dev);
1462 rte_free(vring_states[eth_dev->data->port_id]);
1463 vring_states[eth_dev->data->port_id] = NULL;
1465 rte_eth_dev_release_port(eth_dev);
1470 static struct rte_vdev_driver pmd_vhost_drv = {
1471 .probe = rte_pmd_vhost_probe,
1472 .remove = rte_pmd_vhost_remove,
1475 RTE_PMD_REGISTER_VDEV(net_vhost, pmd_vhost_drv);
1476 RTE_PMD_REGISTER_ALIAS(net_vhost, eth_vhost);
1477 RTE_PMD_REGISTER_PARAM_STRING(net_vhost,