1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2016 Intel Corporation
9 #include <sys/socket.h>
11 #include <rte_malloc.h>
12 #include <rte_kvargs.h>
13 #include <rte_ethdev_vdev.h>
14 #include <rte_bus_vdev.h>
15 #include <rte_alarm.h>
16 #include <rte_cycles.h>
18 #include "virtio_ethdev.h"
19 #include "virtio_logs.h"
20 #include "virtio_pci.h"
21 #include "virtqueue.h"
22 #include "virtio_rxtx.h"
23 #include "virtio_user/virtio_user_dev.h"
24 #include "virtio_user/vhost.h"
26 #define virtio_user_get_dev(hw) \
27 ((struct virtio_user_dev *)(hw)->virtio_user_dev)
30 virtio_user_reset_queues_packed(struct rte_eth_dev *dev)
32 struct virtio_hw *hw = dev->data->dev_private;
33 struct virtnet_rx *rxvq;
34 struct virtnet_tx *txvq;
37 /* Add lock to avoid queue contention. */
38 rte_spinlock_lock(&hw->state_lock);
42 * Waitting for datapath to complete before resetting queues.
43 * 1 ms should be enough for the ongoing Tx/Rx function to finish.
47 /* Vring reset for each Tx queue and Rx queue. */
48 for (i = 0; i < dev->data->nb_rx_queues; i++) {
49 rxvq = dev->data->rx_queues[i];
50 virtqueue_rxvq_reset_packed(rxvq->vq);
51 virtio_dev_rx_queue_setup_finish(dev, i);
54 for (i = 0; i < dev->data->nb_tx_queues; i++) {
55 txvq = dev->data->tx_queues[i];
56 virtqueue_txvq_reset_packed(txvq->vq);
60 rte_spinlock_unlock(&hw->state_lock);
65 virtio_user_server_reconnect(struct virtio_user_dev *dev)
69 struct rte_eth_dev *eth_dev = &rte_eth_devices[dev->port_id];
70 struct virtio_hw *hw = eth_dev->data->dev_private;
71 uint64_t protocol_features;
73 connectfd = accept(dev->listenfd, NULL, NULL);
77 dev->vhostfd = connectfd;
78 if (dev->ops->send_request(dev, VHOST_USER_GET_FEATURES,
79 &dev->device_features) < 0) {
80 PMD_INIT_LOG(ERR, "get_features failed: %s",
85 if (dev->device_features &
86 (1ULL << VHOST_USER_F_PROTOCOL_FEATURES)) {
87 if (dev->ops->send_request(dev,
88 VHOST_USER_GET_PROTOCOL_FEATURES,
92 dev->protocol_features &= protocol_features;
94 if (dev->ops->send_request(dev,
95 VHOST_USER_SET_PROTOCOL_FEATURES,
96 &dev->protocol_features))
99 if (!(dev->protocol_features &
100 (1ULL << VHOST_USER_PROTOCOL_F_MQ)))
101 dev->unsupported_features |= (1ull << VIRTIO_NET_F_MQ);
104 dev->device_features |= dev->frontend_features;
106 /* umask vhost-user unsupported features */
107 dev->device_features &= ~(dev->unsupported_features);
109 dev->features &= dev->device_features;
111 /* For packed ring, resetting queues is required in reconnection. */
112 if (vtpci_packed_queue(hw) &&
113 (vtpci_get_status(hw) & VIRTIO_CONFIG_STATUS_DRIVER_OK)) {
114 PMD_INIT_LOG(NOTICE, "Packets on the fly will be dropped"
115 " when packed ring reconnecting.");
116 virtio_user_reset_queues_packed(eth_dev);
119 ret = virtio_user_start_device(dev);
123 if (dev->queue_pairs > 1) {
124 ret = virtio_user_handle_mq(dev, dev->queue_pairs);
126 PMD_INIT_LOG(ERR, "Fails to enable multi-queue pairs!");
130 if (eth_dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) {
131 if (rte_intr_disable(eth_dev->intr_handle) < 0) {
132 PMD_DRV_LOG(ERR, "interrupt disable failed");
135 rte_intr_callback_unregister(eth_dev->intr_handle,
136 virtio_interrupt_handler,
138 eth_dev->intr_handle->fd = connectfd;
139 rte_intr_callback_register(eth_dev->intr_handle,
140 virtio_interrupt_handler, eth_dev);
142 if (rte_intr_enable(eth_dev->intr_handle) < 0) {
143 PMD_DRV_LOG(ERR, "interrupt enable failed");
147 PMD_INIT_LOG(NOTICE, "server mode virtio-user reconnection succeeds!");
152 virtio_user_delayed_handler(void *param)
154 struct virtio_hw *hw = (struct virtio_hw *)param;
155 struct rte_eth_dev *eth_dev = &rte_eth_devices[hw->port_id];
156 struct virtio_user_dev *dev = virtio_user_get_dev(hw);
158 if (rte_intr_disable(eth_dev->intr_handle) < 0) {
159 PMD_DRV_LOG(ERR, "interrupt disable failed");
162 rte_intr_callback_unregister(eth_dev->intr_handle,
163 virtio_interrupt_handler, eth_dev);
164 if (dev->is_server) {
165 if (dev->vhostfd >= 0) {
169 eth_dev->intr_handle->fd = dev->listenfd;
170 rte_intr_callback_register(eth_dev->intr_handle,
171 virtio_interrupt_handler, eth_dev);
172 if (rte_intr_enable(eth_dev->intr_handle) < 0) {
173 PMD_DRV_LOG(ERR, "interrupt enable failed");
180 virtio_user_read_dev_config(struct virtio_hw *hw, size_t offset,
181 void *dst, int length)
184 struct virtio_user_dev *dev = virtio_user_get_dev(hw);
186 if (offset == offsetof(struct virtio_net_config, mac) &&
187 length == RTE_ETHER_ADDR_LEN) {
188 for (i = 0; i < RTE_ETHER_ADDR_LEN; ++i)
189 ((uint8_t *)dst)[i] = dev->mac_addr[i];
193 if (offset == offsetof(struct virtio_net_config, status)) {
196 if (dev->vhostfd >= 0) {
200 flags = fcntl(dev->vhostfd, F_GETFL);
201 if (fcntl(dev->vhostfd, F_SETFL,
202 flags | O_NONBLOCK) == -1) {
203 PMD_DRV_LOG(ERR, "error setting O_NONBLOCK flag");
206 r = recv(dev->vhostfd, buf, 128, MSG_PEEK);
207 if (r == 0 || (r < 0 && errno != EAGAIN)) {
208 dev->net_status &= (~VIRTIO_NET_S_LINK_UP);
209 PMD_DRV_LOG(ERR, "virtio-user port %u is down",
212 /* This function could be called in the process
213 * of interrupt handling, callback cannot be
214 * unregistered here, set an alarm to do it.
217 virtio_user_delayed_handler,
220 dev->net_status |= VIRTIO_NET_S_LINK_UP;
222 if (fcntl(dev->vhostfd, F_SETFL,
223 flags & ~O_NONBLOCK) == -1) {
224 PMD_DRV_LOG(ERR, "error clearing O_NONBLOCK flag");
227 } else if (dev->is_server) {
228 dev->net_status &= (~VIRTIO_NET_S_LINK_UP);
229 if (virtio_user_server_reconnect(dev) >= 0)
230 dev->net_status |= VIRTIO_NET_S_LINK_UP;
233 *(uint16_t *)dst = dev->net_status;
236 if (offset == offsetof(struct virtio_net_config, max_virtqueue_pairs))
237 *(uint16_t *)dst = dev->max_queue_pairs;
241 virtio_user_write_dev_config(struct virtio_hw *hw, size_t offset,
242 const void *src, int length)
245 struct virtio_user_dev *dev = virtio_user_get_dev(hw);
247 if ((offset == offsetof(struct virtio_net_config, mac)) &&
248 (length == RTE_ETHER_ADDR_LEN))
249 for (i = 0; i < RTE_ETHER_ADDR_LEN; ++i)
250 dev->mac_addr[i] = ((const uint8_t *)src)[i];
252 PMD_DRV_LOG(ERR, "not supported offset=%zu, len=%d",
257 virtio_user_reset(struct virtio_hw *hw)
259 struct virtio_user_dev *dev = virtio_user_get_dev(hw);
261 if (dev->status & VIRTIO_CONFIG_STATUS_DRIVER_OK)
262 virtio_user_stop_device(dev);
266 virtio_user_set_status(struct virtio_hw *hw, uint8_t status)
268 struct virtio_user_dev *dev = virtio_user_get_dev(hw);
270 if (status & VIRTIO_CONFIG_STATUS_DRIVER_OK)
271 virtio_user_start_device(dev);
272 else if (status == VIRTIO_CONFIG_STATUS_RESET)
273 virtio_user_reset(hw);
274 dev->status = status;
275 virtio_user_send_status_update(dev, status);
279 virtio_user_get_status(struct virtio_hw *hw)
281 struct virtio_user_dev *dev = virtio_user_get_dev(hw);
283 virtio_user_update_status(dev);
289 virtio_user_get_features(struct virtio_hw *hw)
291 struct virtio_user_dev *dev = virtio_user_get_dev(hw);
293 /* unmask feature bits defined in vhost user protocol */
294 return dev->device_features & VIRTIO_PMD_SUPPORTED_GUEST_FEATURES;
298 virtio_user_set_features(struct virtio_hw *hw, uint64_t features)
300 struct virtio_user_dev *dev = virtio_user_get_dev(hw);
302 dev->features = features & dev->device_features;
306 virtio_user_get_isr(struct virtio_hw *hw __rte_unused)
308 /* rxq interrupts and config interrupt are separated in virtio-user,
309 * here we only report config change.
311 return VIRTIO_PCI_ISR_CONFIG;
315 virtio_user_set_config_irq(struct virtio_hw *hw __rte_unused,
316 uint16_t vec __rte_unused)
322 virtio_user_set_queue_irq(struct virtio_hw *hw __rte_unused,
323 struct virtqueue *vq __rte_unused,
326 /* pretend we have done that */
330 /* This function is to get the queue size, aka, number of descs, of a specified
331 * queue. Different with the VHOST_USER_GET_QUEUE_NUM, which is used to get the
332 * max supported queues.
335 virtio_user_get_queue_num(struct virtio_hw *hw, uint16_t queue_id __rte_unused)
337 struct virtio_user_dev *dev = virtio_user_get_dev(hw);
339 /* Currently, each queue has same queue size */
340 return dev->queue_size;
344 virtio_user_setup_queue_packed(struct virtqueue *vq,
345 struct virtio_user_dev *dev)
347 uint16_t queue_idx = vq->vq_queue_index;
348 struct vring_packed *vring;
354 vring = &dev->packed_vrings[queue_idx];
355 desc_addr = (uintptr_t)vq->vq_ring_virt_mem;
356 avail_addr = desc_addr + vq->vq_nentries *
357 sizeof(struct vring_packed_desc);
358 used_addr = RTE_ALIGN_CEIL(avail_addr +
359 sizeof(struct vring_packed_desc_event),
360 VIRTIO_PCI_VRING_ALIGN);
361 vring->num = vq->vq_nentries;
362 vring->desc = (void *)(uintptr_t)desc_addr;
363 vring->driver = (void *)(uintptr_t)avail_addr;
364 vring->device = (void *)(uintptr_t)used_addr;
365 dev->packed_queues[queue_idx].avail_wrap_counter = true;
366 dev->packed_queues[queue_idx].used_wrap_counter = true;
368 for (i = 0; i < vring->num; i++)
369 vring->desc[i].flags = 0;
373 virtio_user_setup_queue_split(struct virtqueue *vq, struct virtio_user_dev *dev)
375 uint16_t queue_idx = vq->vq_queue_index;
376 uint64_t desc_addr, avail_addr, used_addr;
378 desc_addr = (uintptr_t)vq->vq_ring_virt_mem;
379 avail_addr = desc_addr + vq->vq_nentries * sizeof(struct vring_desc);
380 used_addr = RTE_ALIGN_CEIL(avail_addr + offsetof(struct vring_avail,
381 ring[vq->vq_nentries]),
382 VIRTIO_PCI_VRING_ALIGN);
384 dev->vrings[queue_idx].num = vq->vq_nentries;
385 dev->vrings[queue_idx].desc = (void *)(uintptr_t)desc_addr;
386 dev->vrings[queue_idx].avail = (void *)(uintptr_t)avail_addr;
387 dev->vrings[queue_idx].used = (void *)(uintptr_t)used_addr;
391 virtio_user_setup_queue(struct virtio_hw *hw, struct virtqueue *vq)
393 struct virtio_user_dev *dev = virtio_user_get_dev(hw);
395 if (vtpci_packed_queue(hw))
396 virtio_user_setup_queue_packed(vq, dev);
398 virtio_user_setup_queue_split(vq, dev);
404 virtio_user_del_queue(struct virtio_hw *hw, struct virtqueue *vq)
406 /* For legacy devices, write 0 to VIRTIO_PCI_QUEUE_PFN port, QEMU
407 * correspondingly stops the ioeventfds, and reset the status of
409 * For modern devices, set queue desc, avail, used in PCI bar to 0,
410 * not see any more behavior in QEMU.
412 * Here we just care about what information to deliver to vhost-user
413 * or vhost-kernel. So we just close ioeventfd for now.
415 struct virtio_user_dev *dev = virtio_user_get_dev(hw);
417 close(dev->callfds[vq->vq_queue_index]);
418 close(dev->kickfds[vq->vq_queue_index]);
422 virtio_user_notify_queue(struct virtio_hw *hw, struct virtqueue *vq)
425 struct virtio_user_dev *dev = virtio_user_get_dev(hw);
427 if (hw->cvq && (hw->cvq->vq == vq)) {
428 if (vtpci_packed_queue(vq->hw))
429 virtio_user_handle_cq_packed(dev, vq->vq_queue_index);
431 virtio_user_handle_cq(dev, vq->vq_queue_index);
435 if (write(dev->kickfds[vq->vq_queue_index], &buf, sizeof(buf)) < 0)
436 PMD_DRV_LOG(ERR, "failed to kick backend: %s",
440 const struct virtio_pci_ops virtio_user_ops = {
441 .read_dev_cfg = virtio_user_read_dev_config,
442 .write_dev_cfg = virtio_user_write_dev_config,
443 .get_status = virtio_user_get_status,
444 .set_status = virtio_user_set_status,
445 .get_features = virtio_user_get_features,
446 .set_features = virtio_user_set_features,
447 .get_isr = virtio_user_get_isr,
448 .set_config_irq = virtio_user_set_config_irq,
449 .set_queue_irq = virtio_user_set_queue_irq,
450 .get_queue_num = virtio_user_get_queue_num,
451 .setup_queue = virtio_user_setup_queue,
452 .del_queue = virtio_user_del_queue,
453 .notify_queue = virtio_user_notify_queue,
456 static const char *valid_args[] = {
457 #define VIRTIO_USER_ARG_QUEUES_NUM "queues"
458 VIRTIO_USER_ARG_QUEUES_NUM,
459 #define VIRTIO_USER_ARG_CQ_NUM "cq"
460 VIRTIO_USER_ARG_CQ_NUM,
461 #define VIRTIO_USER_ARG_MAC "mac"
463 #define VIRTIO_USER_ARG_PATH "path"
464 VIRTIO_USER_ARG_PATH,
465 #define VIRTIO_USER_ARG_QUEUE_SIZE "queue_size"
466 VIRTIO_USER_ARG_QUEUE_SIZE,
467 #define VIRTIO_USER_ARG_INTERFACE_NAME "iface"
468 VIRTIO_USER_ARG_INTERFACE_NAME,
469 #define VIRTIO_USER_ARG_SERVER_MODE "server"
470 VIRTIO_USER_ARG_SERVER_MODE,
471 #define VIRTIO_USER_ARG_MRG_RXBUF "mrg_rxbuf"
472 VIRTIO_USER_ARG_MRG_RXBUF,
473 #define VIRTIO_USER_ARG_IN_ORDER "in_order"
474 VIRTIO_USER_ARG_IN_ORDER,
475 #define VIRTIO_USER_ARG_PACKED_VQ "packed_vq"
476 VIRTIO_USER_ARG_PACKED_VQ,
477 #define VIRTIO_USER_ARG_SPEED "speed"
478 VIRTIO_USER_ARG_SPEED,
479 #define VIRTIO_USER_ARG_VECTORIZED "vectorized"
480 VIRTIO_USER_ARG_VECTORIZED,
484 #define VIRTIO_USER_DEF_CQ_EN 0
485 #define VIRTIO_USER_DEF_Q_NUM 1
486 #define VIRTIO_USER_DEF_Q_SZ 256
487 #define VIRTIO_USER_DEF_SERVER_MODE 0
490 get_string_arg(const char *key __rte_unused,
491 const char *value, void *extra_args)
493 if (!value || !extra_args)
496 *(char **)extra_args = strdup(value);
498 if (!*(char **)extra_args)
505 get_integer_arg(const char *key __rte_unused,
506 const char *value, void *extra_args)
508 uint64_t integer = 0;
509 if (!value || !extra_args)
512 integer = strtoull(value, NULL, 0);
513 /* extra_args keeps default value, it should be replaced
514 * only in case of successful parsing of the 'value' arg
517 *(uint64_t *)extra_args = integer;
521 static struct rte_eth_dev *
522 virtio_user_eth_dev_alloc(struct rte_vdev_device *vdev)
524 struct rte_eth_dev *eth_dev;
525 struct rte_eth_dev_data *data;
526 struct virtio_hw *hw;
527 struct virtio_user_dev *dev;
529 eth_dev = rte_eth_vdev_allocate(vdev, sizeof(*hw));
531 PMD_INIT_LOG(ERR, "cannot alloc rte_eth_dev");
535 data = eth_dev->data;
536 hw = eth_dev->data->dev_private;
538 dev = rte_zmalloc(NULL, sizeof(*dev), 0);
540 PMD_INIT_LOG(ERR, "malloc virtio_user_dev failed");
541 rte_eth_dev_release_port(eth_dev);
545 hw->port_id = data->port_id;
546 dev->port_id = data->port_id;
547 virtio_hw_internal[hw->port_id].vtpci_ops = &virtio_user_ops;
549 * MSIX is required to enable LSC (see virtio_init_device).
550 * Here just pretend that we support msix.
556 hw->use_inorder_rx = 0;
557 hw->use_inorder_tx = 0;
558 hw->virtio_user_dev = dev;
563 virtio_user_eth_dev_free(struct rte_eth_dev *eth_dev)
565 struct rte_eth_dev_data *data = eth_dev->data;
566 struct virtio_hw *hw = data->dev_private;
568 rte_free(hw->virtio_user_dev);
569 rte_eth_dev_release_port(eth_dev);
572 /* Dev initialization routine. Invoked once for each virtio vdev at
573 * EAL init time, see rte_bus_probe().
574 * Returns 0 on success.
577 virtio_user_pmd_probe(struct rte_vdev_device *dev)
579 struct rte_kvargs *kvlist = NULL;
580 struct rte_eth_dev *eth_dev;
581 struct virtio_hw *hw;
582 uint64_t queues = VIRTIO_USER_DEF_Q_NUM;
583 uint64_t cq = VIRTIO_USER_DEF_CQ_EN;
584 uint64_t queue_size = VIRTIO_USER_DEF_Q_SZ;
585 uint64_t server_mode = VIRTIO_USER_DEF_SERVER_MODE;
586 uint64_t mrg_rxbuf = 1;
587 uint64_t in_order = 1;
588 uint64_t packed_vq = 0;
589 uint64_t vectorized = 0;
592 char *mac_addr = NULL;
595 if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
596 const char *name = rte_vdev_device_name(dev);
597 eth_dev = rte_eth_dev_attach_secondary(name);
599 PMD_INIT_LOG(ERR, "Failed to probe %s", name);
603 if (eth_virtio_dev_init(eth_dev) < 0) {
604 PMD_INIT_LOG(ERR, "eth_virtio_dev_init fails");
605 rte_eth_dev_release_port(eth_dev);
609 eth_dev->dev_ops = &virtio_user_secondary_eth_dev_ops;
610 eth_dev->device = &dev->device;
611 rte_eth_dev_probing_finish(eth_dev);
615 kvlist = rte_kvargs_parse(rte_vdev_device_args(dev), valid_args);
617 PMD_INIT_LOG(ERR, "error when parsing param");
621 if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_PATH) == 1) {
622 if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_PATH,
623 &get_string_arg, &path) < 0) {
624 PMD_INIT_LOG(ERR, "error to parse %s",
625 VIRTIO_USER_ARG_PATH);
629 PMD_INIT_LOG(ERR, "arg %s is mandatory for virtio_user",
630 VIRTIO_USER_ARG_PATH);
634 if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_INTERFACE_NAME) == 1) {
635 if (is_vhost_user_by_type(path)) {
637 "arg %s applies only to vhost-kernel backend",
638 VIRTIO_USER_ARG_INTERFACE_NAME);
642 if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_INTERFACE_NAME,
643 &get_string_arg, &ifname) < 0) {
644 PMD_INIT_LOG(ERR, "error to parse %s",
645 VIRTIO_USER_ARG_INTERFACE_NAME);
650 if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_MAC) == 1) {
651 if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_MAC,
652 &get_string_arg, &mac_addr) < 0) {
653 PMD_INIT_LOG(ERR, "error to parse %s",
654 VIRTIO_USER_ARG_MAC);
659 if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_QUEUE_SIZE) == 1) {
660 if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_QUEUE_SIZE,
661 &get_integer_arg, &queue_size) < 0) {
662 PMD_INIT_LOG(ERR, "error to parse %s",
663 VIRTIO_USER_ARG_QUEUE_SIZE);
668 if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_QUEUES_NUM) == 1) {
669 if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_QUEUES_NUM,
670 &get_integer_arg, &queues) < 0) {
671 PMD_INIT_LOG(ERR, "error to parse %s",
672 VIRTIO_USER_ARG_QUEUES_NUM);
677 if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_SERVER_MODE) == 1) {
678 if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_SERVER_MODE,
679 &get_integer_arg, &server_mode) < 0) {
680 PMD_INIT_LOG(ERR, "error to parse %s",
681 VIRTIO_USER_ARG_SERVER_MODE);
686 if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_CQ_NUM) == 1) {
687 if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_CQ_NUM,
688 &get_integer_arg, &cq) < 0) {
689 PMD_INIT_LOG(ERR, "error to parse %s",
690 VIRTIO_USER_ARG_CQ_NUM);
693 } else if (queues > 1) {
697 if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_PACKED_VQ) == 1) {
698 if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_PACKED_VQ,
699 &get_integer_arg, &packed_vq) < 0) {
700 PMD_INIT_LOG(ERR, "error to parse %s",
701 VIRTIO_USER_ARG_PACKED_VQ);
706 if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_VECTORIZED) == 1) {
707 if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_VECTORIZED,
708 &get_integer_arg, &vectorized) < 0) {
709 PMD_INIT_LOG(ERR, "error to parse %s",
710 VIRTIO_USER_ARG_VECTORIZED);
715 if (queues > 1 && cq == 0) {
716 PMD_INIT_LOG(ERR, "multi-q requires ctrl-q");
720 if (queues > VIRTIO_MAX_VIRTQUEUE_PAIRS) {
721 PMD_INIT_LOG(ERR, "arg %s %" PRIu64 " exceeds the limit %u",
722 VIRTIO_USER_ARG_QUEUES_NUM, queues,
723 VIRTIO_MAX_VIRTQUEUE_PAIRS);
727 if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_MRG_RXBUF) == 1) {
728 if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_MRG_RXBUF,
729 &get_integer_arg, &mrg_rxbuf) < 0) {
730 PMD_INIT_LOG(ERR, "error to parse %s",
731 VIRTIO_USER_ARG_MRG_RXBUF);
736 if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_IN_ORDER) == 1) {
737 if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_IN_ORDER,
738 &get_integer_arg, &in_order) < 0) {
739 PMD_INIT_LOG(ERR, "error to parse %s",
740 VIRTIO_USER_ARG_IN_ORDER);
745 eth_dev = virtio_user_eth_dev_alloc(dev);
747 PMD_INIT_LOG(ERR, "virtio_user fails to alloc device");
751 hw = eth_dev->data->dev_private;
752 if (virtio_user_dev_init(hw->virtio_user_dev, path, queues, cq,
753 queue_size, mac_addr, &ifname, server_mode,
754 mrg_rxbuf, in_order, packed_vq) < 0) {
755 PMD_INIT_LOG(ERR, "virtio_user_dev_init fails");
756 virtio_user_eth_dev_free(eth_dev);
760 /* previously called by pci probing for physical dev */
761 if (eth_virtio_dev_init(eth_dev) < 0) {
762 PMD_INIT_LOG(ERR, "eth_virtio_dev_init fails");
763 virtio_user_eth_dev_free(eth_dev);
769 #if defined(CC_AVX512_SUPPORT)
774 "building environment do not support packed ring vectorized");
781 rte_eth_dev_probing_finish(eth_dev);
786 rte_kvargs_free(kvlist);
797 virtio_user_pmd_remove(struct rte_vdev_device *vdev)
800 struct rte_eth_dev *eth_dev;
805 name = rte_vdev_device_name(vdev);
806 PMD_DRV_LOG(INFO, "Un-Initializing %s", name);
807 eth_dev = rte_eth_dev_allocated(name);
808 /* Port has already been released by close. */
812 if (rte_eal_process_type() != RTE_PROC_PRIMARY)
813 return rte_eth_dev_release_port(eth_dev);
815 /* make sure the device is stopped, queues freed */
816 rte_eth_dev_close(eth_dev->data->port_id);
821 static struct rte_vdev_driver virtio_user_driver = {
822 .probe = virtio_user_pmd_probe,
823 .remove = virtio_user_pmd_remove,
826 RTE_PMD_REGISTER_VDEV(net_virtio_user, virtio_user_driver);
827 RTE_PMD_REGISTER_ALIAS(net_virtio_user, virtio_user);
828 RTE_PMD_REGISTER_PARAM_STRING(net_virtio_user,