1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2018 Intel Corporation
7 * The vhost-user protocol connection is an external interface, so it must be
8 * robust against invalid inputs.
10 * This is important because the vhost-user master is only one step removed
11 * from the guest. Malicious guests that have escaped will then launch further
12 * attacks from the vhost-user master.
14 * Even in deployments where guests are trusted, a bug in the vhost-user master
15 * can still cause invalid messages to be sent. Such messages must not
16 * compromise the stability of the DPDK application by causing crashes, memory
17 * corruption, or other problematic behavior.
19 * Do not assume received VhostUserMsg fields contain sensible values!
28 #include <sys/types.h>
31 #ifdef RTE_LIBRTE_VHOST_NUMA
35 #include <rte_common.h>
36 #include <rte_malloc.h>
41 #include "vhost_user.h"
43 #define VIRTIO_MIN_MTU 68
44 #define VIRTIO_MAX_MTU 65535
46 static const char *vhost_message_str[VHOST_USER_MAX] = {
47 [VHOST_USER_NONE] = "VHOST_USER_NONE",
48 [VHOST_USER_GET_FEATURES] = "VHOST_USER_GET_FEATURES",
49 [VHOST_USER_SET_FEATURES] = "VHOST_USER_SET_FEATURES",
50 [VHOST_USER_SET_OWNER] = "VHOST_USER_SET_OWNER",
51 [VHOST_USER_RESET_OWNER] = "VHOST_USER_RESET_OWNER",
52 [VHOST_USER_SET_MEM_TABLE] = "VHOST_USER_SET_MEM_TABLE",
53 [VHOST_USER_SET_LOG_BASE] = "VHOST_USER_SET_LOG_BASE",
54 [VHOST_USER_SET_LOG_FD] = "VHOST_USER_SET_LOG_FD",
55 [VHOST_USER_SET_VRING_NUM] = "VHOST_USER_SET_VRING_NUM",
56 [VHOST_USER_SET_VRING_ADDR] = "VHOST_USER_SET_VRING_ADDR",
57 [VHOST_USER_SET_VRING_BASE] = "VHOST_USER_SET_VRING_BASE",
58 [VHOST_USER_GET_VRING_BASE] = "VHOST_USER_GET_VRING_BASE",
59 [VHOST_USER_SET_VRING_KICK] = "VHOST_USER_SET_VRING_KICK",
60 [VHOST_USER_SET_VRING_CALL] = "VHOST_USER_SET_VRING_CALL",
61 [VHOST_USER_SET_VRING_ERR] = "VHOST_USER_SET_VRING_ERR",
62 [VHOST_USER_GET_PROTOCOL_FEATURES] = "VHOST_USER_GET_PROTOCOL_FEATURES",
63 [VHOST_USER_SET_PROTOCOL_FEATURES] = "VHOST_USER_SET_PROTOCOL_FEATURES",
64 [VHOST_USER_GET_QUEUE_NUM] = "VHOST_USER_GET_QUEUE_NUM",
65 [VHOST_USER_SET_VRING_ENABLE] = "VHOST_USER_SET_VRING_ENABLE",
66 [VHOST_USER_SEND_RARP] = "VHOST_USER_SEND_RARP",
67 [VHOST_USER_NET_SET_MTU] = "VHOST_USER_NET_SET_MTU",
68 [VHOST_USER_SET_SLAVE_REQ_FD] = "VHOST_USER_SET_SLAVE_REQ_FD",
69 [VHOST_USER_IOTLB_MSG] = "VHOST_USER_IOTLB_MSG",
70 [VHOST_USER_CRYPTO_CREATE_SESS] = "VHOST_USER_CRYPTO_CREATE_SESS",
71 [VHOST_USER_CRYPTO_CLOSE_SESS] = "VHOST_USER_CRYPTO_CLOSE_SESS",
80 ret = fstat(fd, &stat);
81 return ret == -1 ? (uint64_t)-1 : (uint64_t)stat.st_blksize;
85 free_mem_region(struct virtio_net *dev)
88 struct rte_vhost_mem_region *reg;
90 if (!dev || !dev->mem)
93 for (i = 0; i < dev->mem->nregions; i++) {
94 reg = &dev->mem->regions[i];
95 if (reg->host_user_addr) {
96 munmap(reg->mmap_addr, reg->mmap_size);
103 vhost_backend_cleanup(struct virtio_net *dev)
106 free_mem_region(dev);
111 free(dev->guest_pages);
112 dev->guest_pages = NULL;
115 munmap((void *)(uintptr_t)dev->log_addr, dev->log_size);
119 if (dev->slave_req_fd >= 0) {
120 close(dev->slave_req_fd);
121 dev->slave_req_fd = -1;
126 * This function just returns success at the moment unless
127 * the device hasn't been initialised.
130 vhost_user_set_owner(void)
136 vhost_user_reset_owner(struct virtio_net *dev)
138 struct rte_vdpa_device *vdpa_dev;
141 if (dev->flags & VIRTIO_DEV_RUNNING) {
142 did = dev->vdpa_dev_id;
143 vdpa_dev = rte_vdpa_get_device(did);
144 if (vdpa_dev && vdpa_dev->ops->dev_close)
145 vdpa_dev->ops->dev_close(dev->vid);
146 dev->flags &= ~VIRTIO_DEV_RUNNING;
147 dev->notify_ops->destroy_device(dev->vid);
150 cleanup_device(dev, 0);
156 * The features that we support are requested.
159 vhost_user_get_features(struct virtio_net *dev)
161 uint64_t features = 0;
163 rte_vhost_driver_get_features(dev->ifname, &features);
168 * The queue number that we support are requested.
171 vhost_user_get_queue_num(struct virtio_net *dev)
173 uint32_t queue_num = 0;
175 rte_vhost_driver_get_queue_num(dev->ifname, &queue_num);
180 * We receive the negotiated features supported by us and the virtio device.
183 vhost_user_set_features(struct virtio_net *dev, uint64_t features)
185 uint64_t vhost_features = 0;
186 struct rte_vdpa_device *vdpa_dev;
189 rte_vhost_driver_get_features(dev->ifname, &vhost_features);
190 if (features & ~vhost_features) {
191 RTE_LOG(ERR, VHOST_CONFIG,
192 "(%d) received invalid negotiated features.\n",
197 if (dev->flags & VIRTIO_DEV_RUNNING) {
198 if (dev->features == features)
202 * Error out if master tries to change features while device is
203 * in running state. The exception being VHOST_F_LOG_ALL, which
204 * is enabled when the live-migration starts.
206 if ((dev->features ^ features) & ~(1ULL << VHOST_F_LOG_ALL)) {
207 RTE_LOG(ERR, VHOST_CONFIG,
208 "(%d) features changed while device is running.\n",
213 if (dev->notify_ops->features_changed)
214 dev->notify_ops->features_changed(dev->vid, features);
217 did = dev->vdpa_dev_id;
218 vdpa_dev = rte_vdpa_get_device(did);
219 if (vdpa_dev && vdpa_dev->ops->set_features)
220 vdpa_dev->ops->set_features(dev->vid);
222 dev->features = features;
224 ((1 << VIRTIO_NET_F_MRG_RXBUF) | (1ULL << VIRTIO_F_VERSION_1))) {
225 dev->vhost_hlen = sizeof(struct virtio_net_hdr_mrg_rxbuf);
227 dev->vhost_hlen = sizeof(struct virtio_net_hdr);
229 VHOST_LOG_DEBUG(VHOST_CONFIG,
230 "(%d) mergeable RX buffers %s, virtio 1 %s\n",
232 (dev->features & (1 << VIRTIO_NET_F_MRG_RXBUF)) ? "on" : "off",
233 (dev->features & (1ULL << VIRTIO_F_VERSION_1)) ? "on" : "off");
235 if ((dev->flags & VIRTIO_DEV_BUILTIN_VIRTIO_NET) &&
236 !(dev->features & (1ULL << VIRTIO_NET_F_MQ))) {
238 * Remove all but first queue pair if MQ hasn't been
239 * negotiated. This is safe because the device is not
240 * running at this stage.
242 while (dev->nr_vring > 2) {
243 struct vhost_virtqueue *vq;
245 vq = dev->virtqueue[--dev->nr_vring];
249 dev->virtqueue[dev->nr_vring] = NULL;
259 * The virtio device sends us the size of the descriptor ring.
262 vhost_user_set_vring_num(struct virtio_net *dev,
265 struct vhost_virtqueue *vq = dev->virtqueue[msg->payload.state.index];
267 vq->size = msg->payload.state.num;
269 /* VIRTIO 1.0, 2.4 Virtqueues says:
271 * Queue Size value is always a power of 2. The maximum Queue Size
274 if ((vq->size & (vq->size - 1)) || vq->size > 32768) {
275 RTE_LOG(ERR, VHOST_CONFIG,
276 "invalid virtqueue size %u\n", vq->size);
280 if (dev->dequeue_zero_copy) {
282 vq->last_zmbuf_idx = 0;
283 vq->zmbuf_size = vq->size;
284 vq->zmbufs = rte_zmalloc(NULL, vq->zmbuf_size *
285 sizeof(struct zcopy_mbuf), 0);
286 if (vq->zmbufs == NULL) {
287 RTE_LOG(WARNING, VHOST_CONFIG,
288 "failed to allocate mem for zero copy; "
289 "zero copy is force disabled\n");
290 dev->dequeue_zero_copy = 0;
292 TAILQ_INIT(&vq->zmbuf_list);
295 vq->shadow_used_ring = rte_malloc(NULL,
296 vq->size * sizeof(struct vring_used_elem),
297 RTE_CACHE_LINE_SIZE);
298 if (!vq->shadow_used_ring) {
299 RTE_LOG(ERR, VHOST_CONFIG,
300 "failed to allocate memory for shadow used ring.\n");
304 vq->batch_copy_elems = rte_malloc(NULL,
305 vq->size * sizeof(struct batch_copy_elem),
306 RTE_CACHE_LINE_SIZE);
307 if (!vq->batch_copy_elems) {
308 RTE_LOG(ERR, VHOST_CONFIG,
309 "failed to allocate memory for batching copy.\n");
317 * Reallocate virtio_dev and vhost_virtqueue data structure to make them on the
318 * same numa node as the memory of vring descriptor.
320 #ifdef RTE_LIBRTE_VHOST_NUMA
321 static struct virtio_net*
322 numa_realloc(struct virtio_net *dev, int index)
324 int oldnode, newnode;
325 struct virtio_net *old_dev;
326 struct vhost_virtqueue *old_vq, *vq;
327 struct zcopy_mbuf *new_zmbuf;
328 struct vring_used_elem *new_shadow_used_ring;
329 struct batch_copy_elem *new_batch_copy_elems;
333 vq = old_vq = dev->virtqueue[index];
335 ret = get_mempolicy(&newnode, NULL, 0, old_vq->desc,
336 MPOL_F_NODE | MPOL_F_ADDR);
338 /* check if we need to reallocate vq */
339 ret |= get_mempolicy(&oldnode, NULL, 0, old_vq,
340 MPOL_F_NODE | MPOL_F_ADDR);
342 RTE_LOG(ERR, VHOST_CONFIG,
343 "Unable to get vq numa information.\n");
346 if (oldnode != newnode) {
347 RTE_LOG(INFO, VHOST_CONFIG,
348 "reallocate vq from %d to %d node\n", oldnode, newnode);
349 vq = rte_malloc_socket(NULL, sizeof(*vq), 0, newnode);
353 memcpy(vq, old_vq, sizeof(*vq));
354 TAILQ_INIT(&vq->zmbuf_list);
356 new_zmbuf = rte_malloc_socket(NULL, vq->zmbuf_size *
357 sizeof(struct zcopy_mbuf), 0, newnode);
359 rte_free(vq->zmbufs);
360 vq->zmbufs = new_zmbuf;
363 new_shadow_used_ring = rte_malloc_socket(NULL,
364 vq->size * sizeof(struct vring_used_elem),
367 if (new_shadow_used_ring) {
368 rte_free(vq->shadow_used_ring);
369 vq->shadow_used_ring = new_shadow_used_ring;
372 new_batch_copy_elems = rte_malloc_socket(NULL,
373 vq->size * sizeof(struct batch_copy_elem),
376 if (new_batch_copy_elems) {
377 rte_free(vq->batch_copy_elems);
378 vq->batch_copy_elems = new_batch_copy_elems;
384 /* check if we need to reallocate dev */
385 ret = get_mempolicy(&oldnode, NULL, 0, old_dev,
386 MPOL_F_NODE | MPOL_F_ADDR);
388 RTE_LOG(ERR, VHOST_CONFIG,
389 "Unable to get dev numa information.\n");
392 if (oldnode != newnode) {
393 RTE_LOG(INFO, VHOST_CONFIG,
394 "reallocate dev from %d to %d node\n",
396 dev = rte_malloc_socket(NULL, sizeof(*dev), 0, newnode);
402 memcpy(dev, old_dev, sizeof(*dev));
407 dev->virtqueue[index] = vq;
408 vhost_devices[dev->vid] = dev;
411 vhost_user_iotlb_init(dev, index);
416 static struct virtio_net*
417 numa_realloc(struct virtio_net *dev, int index __rte_unused)
423 /* Converts QEMU virtual address to Vhost virtual address. */
425 qva_to_vva(struct virtio_net *dev, uint64_t qva)
427 struct rte_vhost_mem_region *reg;
430 /* Find the region where the address lives. */
431 for (i = 0; i < dev->mem->nregions; i++) {
432 reg = &dev->mem->regions[i];
434 if (qva >= reg->guest_user_addr &&
435 qva < reg->guest_user_addr + reg->size) {
436 return qva - reg->guest_user_addr +
446 * Converts ring address to Vhost virtual address.
447 * If IOMMU is enabled, the ring address is a guest IO virtual address,
448 * else it is a QEMU virtual address.
451 ring_addr_to_vva(struct virtio_net *dev, struct vhost_virtqueue *vq,
452 uint64_t ra, uint64_t size)
454 if (dev->features & (1ULL << VIRTIO_F_IOMMU_PLATFORM)) {
457 vva = vhost_user_iotlb_cache_find(vq, ra,
458 &size, VHOST_ACCESS_RW);
460 vhost_user_iotlb_miss(dev, ra, VHOST_ACCESS_RW);
465 return qva_to_vva(dev, ra);
468 static struct virtio_net *
469 translate_ring_addresses(struct virtio_net *dev, int vq_index)
471 struct vhost_virtqueue *vq = dev->virtqueue[vq_index];
472 struct vhost_vring_addr *addr = &vq->ring_addrs;
474 /* The addresses are converted from QEMU virtual to Vhost virtual. */
475 if (vq->desc && vq->avail && vq->used)
478 vq->desc = (struct vring_desc *)(uintptr_t)ring_addr_to_vva(dev,
479 vq, addr->desc_user_addr, sizeof(struct vring_desc));
481 RTE_LOG(DEBUG, VHOST_CONFIG,
482 "(%d) failed to find desc ring address.\n",
487 dev = numa_realloc(dev, vq_index);
488 vq = dev->virtqueue[vq_index];
489 addr = &vq->ring_addrs;
491 vq->avail = (struct vring_avail *)(uintptr_t)ring_addr_to_vva(dev,
492 vq, addr->avail_user_addr, sizeof(struct vring_avail));
493 if (vq->avail == 0) {
494 RTE_LOG(DEBUG, VHOST_CONFIG,
495 "(%d) failed to find avail ring address.\n",
500 vq->used = (struct vring_used *)(uintptr_t)ring_addr_to_vva(dev,
501 vq, addr->used_user_addr, sizeof(struct vring_used));
503 RTE_LOG(DEBUG, VHOST_CONFIG,
504 "(%d) failed to find used ring address.\n",
509 if (vq->last_used_idx != vq->used->idx) {
510 RTE_LOG(WARNING, VHOST_CONFIG,
511 "last_used_idx (%u) and vq->used->idx (%u) mismatches; "
512 "some packets maybe resent for Tx and dropped for Rx\n",
513 vq->last_used_idx, vq->used->idx);
514 vq->last_used_idx = vq->used->idx;
515 vq->last_avail_idx = vq->used->idx;
518 vq->log_guest_addr = addr->log_guest_addr;
520 VHOST_LOG_DEBUG(VHOST_CONFIG, "(%d) mapped address desc: %p\n",
522 VHOST_LOG_DEBUG(VHOST_CONFIG, "(%d) mapped address avail: %p\n",
523 dev->vid, vq->avail);
524 VHOST_LOG_DEBUG(VHOST_CONFIG, "(%d) mapped address used: %p\n",
526 VHOST_LOG_DEBUG(VHOST_CONFIG, "(%d) log_guest_addr: %" PRIx64 "\n",
527 dev->vid, vq->log_guest_addr);
533 * The virtio device sends us the desc, used and avail ring addresses.
534 * This function then converts these to our address space.
537 vhost_user_set_vring_addr(struct virtio_net **pdev, VhostUserMsg *msg)
539 struct vhost_virtqueue *vq;
540 struct vhost_vring_addr *addr = &msg->payload.addr;
541 struct virtio_net *dev = *pdev;
543 if (dev->mem == NULL)
546 /* addr->index refers to the queue index. The txq 1, rxq is 0. */
547 vq = dev->virtqueue[msg->payload.addr.index];
550 * Rings addresses should not be interpreted as long as the ring is not
551 * started and enabled
553 memcpy(&vq->ring_addrs, addr, sizeof(*addr));
555 vring_invalidate(dev, vq);
557 if (vq->enabled && (dev->features &
558 (1ULL << VHOST_USER_F_PROTOCOL_FEATURES))) {
559 dev = translate_ring_addresses(dev, msg->payload.addr.index);
570 * The virtio device sends us the available ring last used index.
573 vhost_user_set_vring_base(struct virtio_net *dev,
576 dev->virtqueue[msg->payload.state.index]->last_used_idx =
577 msg->payload.state.num;
578 dev->virtqueue[msg->payload.state.index]->last_avail_idx =
579 msg->payload.state.num;
585 add_one_guest_page(struct virtio_net *dev, uint64_t guest_phys_addr,
586 uint64_t host_phys_addr, uint64_t size)
588 struct guest_page *page, *last_page;
590 if (dev->nr_guest_pages == dev->max_guest_pages) {
591 dev->max_guest_pages *= 2;
592 dev->guest_pages = realloc(dev->guest_pages,
593 dev->max_guest_pages * sizeof(*page));
594 if (!dev->guest_pages) {
595 RTE_LOG(ERR, VHOST_CONFIG, "cannot realloc guest_pages\n");
600 if (dev->nr_guest_pages > 0) {
601 last_page = &dev->guest_pages[dev->nr_guest_pages - 1];
602 /* merge if the two pages are continuous */
603 if (host_phys_addr == last_page->host_phys_addr +
605 last_page->size += size;
610 page = &dev->guest_pages[dev->nr_guest_pages++];
611 page->guest_phys_addr = guest_phys_addr;
612 page->host_phys_addr = host_phys_addr;
619 add_guest_pages(struct virtio_net *dev, struct rte_vhost_mem_region *reg,
622 uint64_t reg_size = reg->size;
623 uint64_t host_user_addr = reg->host_user_addr;
624 uint64_t guest_phys_addr = reg->guest_phys_addr;
625 uint64_t host_phys_addr;
628 host_phys_addr = rte_mem_virt2iova((void *)(uintptr_t)host_user_addr);
629 size = page_size - (guest_phys_addr & (page_size - 1));
630 size = RTE_MIN(size, reg_size);
632 if (add_one_guest_page(dev, guest_phys_addr, host_phys_addr, size) < 0)
635 host_user_addr += size;
636 guest_phys_addr += size;
639 while (reg_size > 0) {
640 size = RTE_MIN(reg_size, page_size);
641 host_phys_addr = rte_mem_virt2iova((void *)(uintptr_t)
643 if (add_one_guest_page(dev, guest_phys_addr, host_phys_addr,
647 host_user_addr += size;
648 guest_phys_addr += size;
655 #ifdef RTE_LIBRTE_VHOST_DEBUG
656 /* TODO: enable it only in debug mode? */
658 dump_guest_pages(struct virtio_net *dev)
661 struct guest_page *page;
663 for (i = 0; i < dev->nr_guest_pages; i++) {
664 page = &dev->guest_pages[i];
666 RTE_LOG(INFO, VHOST_CONFIG,
667 "guest physical page region %u\n"
668 "\t guest_phys_addr: %" PRIx64 "\n"
669 "\t host_phys_addr : %" PRIx64 "\n"
670 "\t size : %" PRIx64 "\n",
672 page->guest_phys_addr,
673 page->host_phys_addr,
678 #define dump_guest_pages(dev)
682 vhost_memory_changed(struct VhostUserMemory *new,
683 struct rte_vhost_memory *old)
687 if (new->nregions != old->nregions)
690 for (i = 0; i < new->nregions; ++i) {
691 VhostUserMemoryRegion *new_r = &new->regions[i];
692 struct rte_vhost_mem_region *old_r = &old->regions[i];
694 if (new_r->guest_phys_addr != old_r->guest_phys_addr)
696 if (new_r->memory_size != old_r->size)
698 if (new_r->userspace_addr != old_r->guest_user_addr)
706 vhost_user_set_mem_table(struct virtio_net *dev, struct VhostUserMsg *pmsg)
708 struct VhostUserMemory memory = pmsg->payload.memory;
709 struct rte_vhost_mem_region *reg;
712 uint64_t mmap_offset;
718 if (memory.nregions > VHOST_MEMORY_MAX_NREGIONS) {
719 RTE_LOG(ERR, VHOST_CONFIG,
720 "too many memory regions (%u)\n", memory.nregions);
724 if (dev->mem && !vhost_memory_changed(&memory, dev->mem)) {
725 RTE_LOG(INFO, VHOST_CONFIG,
726 "(%d) memory regions not changed\n", dev->vid);
728 for (i = 0; i < memory.nregions; i++)
735 free_mem_region(dev);
740 dev->nr_guest_pages = 0;
741 if (!dev->guest_pages) {
742 dev->max_guest_pages = 8;
743 dev->guest_pages = malloc(dev->max_guest_pages *
744 sizeof(struct guest_page));
745 if (dev->guest_pages == NULL) {
746 RTE_LOG(ERR, VHOST_CONFIG,
747 "(%d) failed to allocate memory "
748 "for dev->guest_pages\n",
754 dev->mem = rte_zmalloc("vhost-mem-table", sizeof(struct rte_vhost_memory) +
755 sizeof(struct rte_vhost_mem_region) * memory.nregions, 0);
756 if (dev->mem == NULL) {
757 RTE_LOG(ERR, VHOST_CONFIG,
758 "(%d) failed to allocate memory for dev->mem\n",
762 dev->mem->nregions = memory.nregions;
764 for (i = 0; i < memory.nregions; i++) {
766 reg = &dev->mem->regions[i];
768 reg->guest_phys_addr = memory.regions[i].guest_phys_addr;
769 reg->guest_user_addr = memory.regions[i].userspace_addr;
770 reg->size = memory.regions[i].memory_size;
773 mmap_offset = memory.regions[i].mmap_offset;
775 /* Check for memory_size + mmap_offset overflow */
776 if (mmap_offset >= -reg->size) {
777 RTE_LOG(ERR, VHOST_CONFIG,
778 "mmap_offset (%#"PRIx64") and memory_size "
779 "(%#"PRIx64") overflow\n",
780 mmap_offset, reg->size);
784 mmap_size = reg->size + mmap_offset;
786 /* mmap() without flag of MAP_ANONYMOUS, should be called
787 * with length argument aligned with hugepagesz at older
788 * longterm version Linux, like 2.6.32 and 3.2.72, or
789 * mmap() will fail with EINVAL.
791 * to avoid failure, make sure in caller to keep length
794 alignment = get_blk_size(fd);
795 if (alignment == (uint64_t)-1) {
796 RTE_LOG(ERR, VHOST_CONFIG,
797 "couldn't get hugepage size through fstat\n");
800 mmap_size = RTE_ALIGN_CEIL(mmap_size, alignment);
802 populate = (dev->dequeue_zero_copy) ? MAP_POPULATE : 0;
803 mmap_addr = mmap(NULL, mmap_size, PROT_READ | PROT_WRITE,
804 MAP_SHARED | populate, fd, 0);
806 if (mmap_addr == MAP_FAILED) {
807 RTE_LOG(ERR, VHOST_CONFIG,
808 "mmap region %u failed.\n", i);
812 reg->mmap_addr = mmap_addr;
813 reg->mmap_size = mmap_size;
814 reg->host_user_addr = (uint64_t)(uintptr_t)mmap_addr +
817 if (dev->dequeue_zero_copy)
818 if (add_guest_pages(dev, reg, alignment) < 0) {
819 RTE_LOG(ERR, VHOST_CONFIG,
820 "adding guest pages to region %u failed.\n",
825 RTE_LOG(INFO, VHOST_CONFIG,
826 "guest memory region %u, size: 0x%" PRIx64 "\n"
827 "\t guest physical addr: 0x%" PRIx64 "\n"
828 "\t guest virtual addr: 0x%" PRIx64 "\n"
829 "\t host virtual addr: 0x%" PRIx64 "\n"
830 "\t mmap addr : 0x%" PRIx64 "\n"
831 "\t mmap size : 0x%" PRIx64 "\n"
832 "\t mmap align: 0x%" PRIx64 "\n"
833 "\t mmap off : 0x%" PRIx64 "\n",
835 reg->guest_phys_addr,
836 reg->guest_user_addr,
838 (uint64_t)(uintptr_t)mmap_addr,
844 dump_guest_pages(dev);
849 free_mem_region(dev);
856 vq_is_ready(struct vhost_virtqueue *vq)
858 return vq && vq->desc && vq->avail && vq->used &&
859 vq->kickfd != VIRTIO_UNINITIALIZED_EVENTFD &&
860 vq->callfd != VIRTIO_UNINITIALIZED_EVENTFD;
864 virtio_is_ready(struct virtio_net *dev)
866 struct vhost_virtqueue *vq;
869 if (dev->nr_vring == 0)
872 for (i = 0; i < dev->nr_vring; i++) {
873 vq = dev->virtqueue[i];
875 if (!vq_is_ready(vq))
879 RTE_LOG(INFO, VHOST_CONFIG,
880 "virtio is now ready for processing.\n");
885 vhost_user_set_vring_call(struct virtio_net *dev, struct VhostUserMsg *pmsg)
887 struct vhost_vring_file file;
888 struct vhost_virtqueue *vq;
890 file.index = pmsg->payload.u64 & VHOST_USER_VRING_IDX_MASK;
891 if (pmsg->payload.u64 & VHOST_USER_VRING_NOFD_MASK)
892 file.fd = VIRTIO_INVALID_EVENTFD;
894 file.fd = pmsg->fds[0];
895 RTE_LOG(INFO, VHOST_CONFIG,
896 "vring call idx:%d file:%d\n", file.index, file.fd);
898 vq = dev->virtqueue[file.index];
902 vq->callfd = file.fd;
906 vhost_user_set_vring_kick(struct virtio_net **pdev, struct VhostUserMsg *pmsg)
908 struct vhost_vring_file file;
909 struct vhost_virtqueue *vq;
910 struct virtio_net *dev = *pdev;
912 file.index = pmsg->payload.u64 & VHOST_USER_VRING_IDX_MASK;
913 if (pmsg->payload.u64 & VHOST_USER_VRING_NOFD_MASK)
914 file.fd = VIRTIO_INVALID_EVENTFD;
916 file.fd = pmsg->fds[0];
917 RTE_LOG(INFO, VHOST_CONFIG,
918 "vring kick idx:%d file:%d\n", file.index, file.fd);
920 /* Interpret ring addresses only when ring is started. */
921 dev = translate_ring_addresses(dev, file.index);
927 vq = dev->virtqueue[file.index];
930 * When VHOST_USER_F_PROTOCOL_FEATURES is not negotiated,
931 * the ring starts already enabled. Otherwise, it is enabled via
932 * the SET_VRING_ENABLE message.
934 if (!(dev->features & (1ULL << VHOST_USER_F_PROTOCOL_FEATURES)))
939 vq->kickfd = file.fd;
943 free_zmbufs(struct vhost_virtqueue *vq)
945 struct zcopy_mbuf *zmbuf, *next;
947 for (zmbuf = TAILQ_FIRST(&vq->zmbuf_list);
948 zmbuf != NULL; zmbuf = next) {
949 next = TAILQ_NEXT(zmbuf, next);
951 rte_pktmbuf_free(zmbuf->mbuf);
952 TAILQ_REMOVE(&vq->zmbuf_list, zmbuf, next);
955 rte_free(vq->zmbufs);
959 * when virtio is stopped, qemu will send us the GET_VRING_BASE message.
962 vhost_user_get_vring_base(struct virtio_net *dev,
965 struct vhost_virtqueue *vq = dev->virtqueue[msg->payload.state.index];
966 struct rte_vdpa_device *vdpa_dev;
969 /* We have to stop the queue (virtio) if it is running. */
970 if (dev->flags & VIRTIO_DEV_RUNNING) {
971 did = dev->vdpa_dev_id;
972 vdpa_dev = rte_vdpa_get_device(did);
973 if (vdpa_dev && vdpa_dev->ops->dev_close)
974 vdpa_dev->ops->dev_close(dev->vid);
975 dev->flags &= ~VIRTIO_DEV_RUNNING;
976 dev->notify_ops->destroy_device(dev->vid);
979 dev->flags &= ~VIRTIO_DEV_READY;
980 dev->flags &= ~VIRTIO_DEV_VDPA_CONFIGURED;
982 /* Here we are safe to get the last avail index */
983 msg->payload.state.num = vq->last_avail_idx;
985 RTE_LOG(INFO, VHOST_CONFIG,
986 "vring base idx:%d file:%d\n", msg->payload.state.index,
987 msg->payload.state.num);
989 * Based on current qemu vhost-user implementation, this message is
990 * sent and only sent in vhost_vring_stop.
991 * TODO: cleanup the vring, it isn't usable since here.
996 vq->kickfd = VIRTIO_UNINITIALIZED_EVENTFD;
1001 vq->callfd = VIRTIO_UNINITIALIZED_EVENTFD;
1003 if (dev->dequeue_zero_copy)
1005 rte_free(vq->shadow_used_ring);
1006 vq->shadow_used_ring = NULL;
1008 rte_free(vq->batch_copy_elems);
1009 vq->batch_copy_elems = NULL;
1015 * when virtio queues are ready to work, qemu will send us to
1016 * enable the virtio queue pair.
1019 vhost_user_set_vring_enable(struct virtio_net *dev,
1022 int enable = (int)msg->payload.state.num;
1023 int index = (int)msg->payload.state.index;
1024 struct rte_vdpa_device *vdpa_dev;
1027 RTE_LOG(INFO, VHOST_CONFIG,
1028 "set queue enable: %d to qp idx: %d\n",
1031 did = dev->vdpa_dev_id;
1032 vdpa_dev = rte_vdpa_get_device(did);
1033 if (vdpa_dev && vdpa_dev->ops->set_vring_state)
1034 vdpa_dev->ops->set_vring_state(dev->vid, index, enable);
1036 if (dev->notify_ops->vring_state_changed)
1037 dev->notify_ops->vring_state_changed(dev->vid,
1040 dev->virtqueue[index]->enabled = enable;
1046 vhost_user_get_protocol_features(struct virtio_net *dev,
1047 struct VhostUserMsg *msg)
1049 uint64_t features, protocol_features;
1051 rte_vhost_driver_get_features(dev->ifname, &features);
1052 rte_vhost_driver_get_protocol_features(dev->ifname, &protocol_features);
1055 * REPLY_ACK protocol feature is only mandatory for now
1056 * for IOMMU feature. If IOMMU is explicitly disabled by the
1057 * application, disable also REPLY_ACK feature for older buggy
1058 * Qemu versions (from v2.7.0 to v2.9.0).
1060 if (!(features & (1ULL << VIRTIO_F_IOMMU_PLATFORM)))
1061 protocol_features &= ~(1ULL << VHOST_USER_PROTOCOL_F_REPLY_ACK);
1063 msg->payload.u64 = protocol_features;
1064 msg->size = sizeof(msg->payload.u64);
1068 vhost_user_set_protocol_features(struct virtio_net *dev,
1069 uint64_t protocol_features)
1071 if (protocol_features & ~VHOST_USER_PROTOCOL_FEATURES)
1074 dev->protocol_features = protocol_features;
1078 vhost_user_set_log_base(struct virtio_net *dev, struct VhostUserMsg *msg)
1080 int fd = msg->fds[0];
1085 RTE_LOG(ERR, VHOST_CONFIG, "invalid log fd: %d\n", fd);
1089 if (msg->size != sizeof(VhostUserLog)) {
1090 RTE_LOG(ERR, VHOST_CONFIG,
1091 "invalid log base msg size: %"PRId32" != %d\n",
1092 msg->size, (int)sizeof(VhostUserLog));
1096 size = msg->payload.log.mmap_size;
1097 off = msg->payload.log.mmap_offset;
1099 /* Don't allow mmap_offset to point outside the mmap region */
1101 RTE_LOG(ERR, VHOST_CONFIG,
1102 "log offset %#"PRIx64" exceeds log size %#"PRIx64"\n",
1107 RTE_LOG(INFO, VHOST_CONFIG,
1108 "log mmap size: %"PRId64", offset: %"PRId64"\n",
1112 * mmap from 0 to workaround a hugepage mmap bug: mmap will
1113 * fail when offset is not page size aligned.
1115 addr = mmap(0, size + off, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
1117 if (addr == MAP_FAILED) {
1118 RTE_LOG(ERR, VHOST_CONFIG, "mmap log base failed!\n");
1123 * Free previously mapped log memory on occasionally
1124 * multiple VHOST_USER_SET_LOG_BASE.
1126 if (dev->log_addr) {
1127 munmap((void *)(uintptr_t)dev->log_addr, dev->log_size);
1129 dev->log_addr = (uint64_t)(uintptr_t)addr;
1130 dev->log_base = dev->log_addr + off;
1131 dev->log_size = size;
1137 * An rarp packet is constructed and broadcasted to notify switches about
1138 * the new location of the migrated VM, so that packets from outside will
1139 * not be lost after migration.
1141 * However, we don't actually "send" a rarp packet here, instead, we set
1142 * a flag 'broadcast_rarp' to let rte_vhost_dequeue_burst() inject it.
1145 vhost_user_send_rarp(struct virtio_net *dev, struct VhostUserMsg *msg)
1147 uint8_t *mac = (uint8_t *)&msg->payload.u64;
1148 struct rte_vdpa_device *vdpa_dev;
1151 RTE_LOG(DEBUG, VHOST_CONFIG,
1152 ":: mac: %02x:%02x:%02x:%02x:%02x:%02x\n",
1153 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
1154 memcpy(dev->mac.addr_bytes, mac, 6);
1157 * Set the flag to inject a RARP broadcast packet at
1158 * rte_vhost_dequeue_burst().
1160 * rte_smp_wmb() is for making sure the mac is copied
1161 * before the flag is set.
1164 rte_atomic16_set(&dev->broadcast_rarp, 1);
1165 did = dev->vdpa_dev_id;
1166 vdpa_dev = rte_vdpa_get_device(did);
1167 if (vdpa_dev && vdpa_dev->ops->migration_done)
1168 vdpa_dev->ops->migration_done(dev->vid);
1174 vhost_user_net_set_mtu(struct virtio_net *dev, struct VhostUserMsg *msg)
1176 if (msg->payload.u64 < VIRTIO_MIN_MTU ||
1177 msg->payload.u64 > VIRTIO_MAX_MTU) {
1178 RTE_LOG(ERR, VHOST_CONFIG, "Invalid MTU size (%"PRIu64")\n",
1184 dev->mtu = msg->payload.u64;
1190 vhost_user_set_req_fd(struct virtio_net *dev, struct VhostUserMsg *msg)
1192 int fd = msg->fds[0];
1195 RTE_LOG(ERR, VHOST_CONFIG,
1196 "Invalid file descriptor for slave channel (%d)\n",
1201 dev->slave_req_fd = fd;
1207 is_vring_iotlb_update(struct vhost_virtqueue *vq, struct vhost_iotlb_msg *imsg)
1209 struct vhost_vring_addr *ra;
1210 uint64_t start, end;
1213 end = start + imsg->size;
1215 ra = &vq->ring_addrs;
1216 if (ra->desc_user_addr >= start && ra->desc_user_addr < end)
1218 if (ra->avail_user_addr >= start && ra->avail_user_addr < end)
1220 if (ra->used_user_addr >= start && ra->used_user_addr < end)
1227 is_vring_iotlb_invalidate(struct vhost_virtqueue *vq,
1228 struct vhost_iotlb_msg *imsg)
1230 uint64_t istart, iend, vstart, vend;
1232 istart = imsg->iova;
1233 iend = istart + imsg->size - 1;
1235 vstart = (uintptr_t)vq->desc;
1236 vend = vstart + sizeof(struct vring_desc) * vq->size - 1;
1237 if (vstart <= iend && istart <= vend)
1240 vstart = (uintptr_t)vq->avail;
1241 vend = vstart + sizeof(struct vring_avail);
1242 vend += sizeof(uint16_t) * vq->size - 1;
1243 if (vstart <= iend && istart <= vend)
1246 vstart = (uintptr_t)vq->used;
1247 vend = vstart + sizeof(struct vring_used);
1248 vend += sizeof(struct vring_used_elem) * vq->size - 1;
1249 if (vstart <= iend && istart <= vend)
1256 vhost_user_iotlb_msg(struct virtio_net **pdev, struct VhostUserMsg *msg)
1258 struct virtio_net *dev = *pdev;
1259 struct vhost_iotlb_msg *imsg = &msg->payload.iotlb;
1263 switch (imsg->type) {
1264 case VHOST_IOTLB_UPDATE:
1265 vva = qva_to_vva(dev, imsg->uaddr);
1269 for (i = 0; i < dev->nr_vring; i++) {
1270 struct vhost_virtqueue *vq = dev->virtqueue[i];
1272 vhost_user_iotlb_cache_insert(vq, imsg->iova, vva,
1273 imsg->size, imsg->perm);
1275 if (is_vring_iotlb_update(vq, imsg))
1276 *pdev = dev = translate_ring_addresses(dev, i);
1279 case VHOST_IOTLB_INVALIDATE:
1280 for (i = 0; i < dev->nr_vring; i++) {
1281 struct vhost_virtqueue *vq = dev->virtqueue[i];
1283 vhost_user_iotlb_cache_remove(vq, imsg->iova,
1286 if (is_vring_iotlb_invalidate(vq, imsg))
1287 vring_invalidate(dev, vq);
1291 RTE_LOG(ERR, VHOST_CONFIG, "Invalid IOTLB message type (%d)\n",
1299 /* return bytes# of read on success or negative val on failure. */
1301 read_vhost_message(int sockfd, struct VhostUserMsg *msg)
1305 ret = read_fd_message(sockfd, (char *)msg, VHOST_USER_HDR_SIZE,
1306 msg->fds, VHOST_MEMORY_MAX_NREGIONS);
1310 if (msg && msg->size) {
1311 if (msg->size > sizeof(msg->payload)) {
1312 RTE_LOG(ERR, VHOST_CONFIG,
1313 "invalid msg size: %d\n", msg->size);
1316 ret = read(sockfd, &msg->payload, msg->size);
1319 if (ret != (int)msg->size) {
1320 RTE_LOG(ERR, VHOST_CONFIG,
1321 "read control message failed\n");
1330 send_vhost_message(int sockfd, struct VhostUserMsg *msg, int *fds, int fd_num)
1335 return send_fd_message(sockfd, (char *)msg,
1336 VHOST_USER_HDR_SIZE + msg->size, fds, fd_num);
1340 send_vhost_reply(int sockfd, struct VhostUserMsg *msg)
1345 msg->flags &= ~VHOST_USER_VERSION_MASK;
1346 msg->flags &= ~VHOST_USER_NEED_REPLY;
1347 msg->flags |= VHOST_USER_VERSION;
1348 msg->flags |= VHOST_USER_REPLY_MASK;
1350 return send_vhost_message(sockfd, msg, NULL, 0);
1354 * Allocate a queue pair if it hasn't been allocated yet
1357 vhost_user_check_and_alloc_queue_pair(struct virtio_net *dev, VhostUserMsg *msg)
1361 switch (msg->request.master) {
1362 case VHOST_USER_SET_VRING_KICK:
1363 case VHOST_USER_SET_VRING_CALL:
1364 case VHOST_USER_SET_VRING_ERR:
1365 vring_idx = msg->payload.u64 & VHOST_USER_VRING_IDX_MASK;
1367 case VHOST_USER_SET_VRING_NUM:
1368 case VHOST_USER_SET_VRING_BASE:
1369 case VHOST_USER_SET_VRING_ENABLE:
1370 vring_idx = msg->payload.state.index;
1372 case VHOST_USER_SET_VRING_ADDR:
1373 vring_idx = msg->payload.addr.index;
1379 if (vring_idx >= VHOST_MAX_VRING) {
1380 RTE_LOG(ERR, VHOST_CONFIG,
1381 "invalid vring index: %u\n", vring_idx);
1385 if (dev->virtqueue[vring_idx])
1388 return alloc_vring_queue(dev, vring_idx);
1392 vhost_user_lock_all_queue_pairs(struct virtio_net *dev)
1395 unsigned int vq_num = 0;
1397 while (vq_num < dev->nr_vring) {
1398 struct vhost_virtqueue *vq = dev->virtqueue[i];
1401 rte_spinlock_lock(&vq->access_lock);
1409 vhost_user_unlock_all_queue_pairs(struct virtio_net *dev)
1412 unsigned int vq_num = 0;
1414 while (vq_num < dev->nr_vring) {
1415 struct vhost_virtqueue *vq = dev->virtqueue[i];
1418 rte_spinlock_unlock(&vq->access_lock);
1426 vhost_user_msg_handler(int vid, int fd)
1428 struct virtio_net *dev;
1429 struct VhostUserMsg msg;
1430 struct rte_vdpa_device *vdpa_dev;
1433 int unlock_required = 0;
1434 uint32_t skip_master = 0;
1436 dev = get_device(vid);
1440 if (!dev->notify_ops) {
1441 dev->notify_ops = vhost_driver_callback_get(dev->ifname);
1442 if (!dev->notify_ops) {
1443 RTE_LOG(ERR, VHOST_CONFIG,
1444 "failed to get callback ops for driver %s\n",
1450 ret = read_vhost_message(fd, &msg);
1451 if (ret <= 0 || msg.request.master >= VHOST_USER_MAX) {
1453 RTE_LOG(ERR, VHOST_CONFIG,
1454 "vhost read message failed\n");
1456 RTE_LOG(INFO, VHOST_CONFIG,
1457 "vhost peer closed\n");
1459 RTE_LOG(ERR, VHOST_CONFIG,
1460 "vhost read incorrect message\n");
1466 if (msg.request.master != VHOST_USER_IOTLB_MSG)
1467 RTE_LOG(INFO, VHOST_CONFIG, "read message %s\n",
1468 vhost_message_str[msg.request.master]);
1470 RTE_LOG(DEBUG, VHOST_CONFIG, "read message %s\n",
1471 vhost_message_str[msg.request.master]);
1473 ret = vhost_user_check_and_alloc_queue_pair(dev, &msg);
1475 RTE_LOG(ERR, VHOST_CONFIG,
1476 "failed to alloc queue\n");
1481 * Note: we don't lock all queues on VHOST_USER_GET_VRING_BASE
1482 * and VHOST_USER_RESET_OWNER, since it is sent when virtio stops
1483 * and device is destroyed. destroy_device waits for queues to be
1484 * inactive, so it is safe. Otherwise taking the access_lock
1485 * would cause a dead lock.
1487 switch (msg.request.master) {
1488 case VHOST_USER_SET_FEATURES:
1489 case VHOST_USER_SET_PROTOCOL_FEATURES:
1490 case VHOST_USER_SET_OWNER:
1491 case VHOST_USER_SET_MEM_TABLE:
1492 case VHOST_USER_SET_LOG_BASE:
1493 case VHOST_USER_SET_LOG_FD:
1494 case VHOST_USER_SET_VRING_NUM:
1495 case VHOST_USER_SET_VRING_ADDR:
1496 case VHOST_USER_SET_VRING_BASE:
1497 case VHOST_USER_SET_VRING_KICK:
1498 case VHOST_USER_SET_VRING_CALL:
1499 case VHOST_USER_SET_VRING_ERR:
1500 case VHOST_USER_SET_VRING_ENABLE:
1501 case VHOST_USER_SEND_RARP:
1502 case VHOST_USER_NET_SET_MTU:
1503 case VHOST_USER_SET_SLAVE_REQ_FD:
1504 vhost_user_lock_all_queue_pairs(dev);
1505 unlock_required = 1;
1512 if (dev->extern_ops.pre_msg_handle) {
1513 uint32_t need_reply;
1515 ret = (*dev->extern_ops.pre_msg_handle)(dev->vid,
1516 (void *)&msg, &need_reply, &skip_master);
1521 send_vhost_reply(fd, &msg);
1524 goto skip_to_post_handle;
1527 switch (msg.request.master) {
1528 case VHOST_USER_GET_FEATURES:
1529 msg.payload.u64 = vhost_user_get_features(dev);
1530 msg.size = sizeof(msg.payload.u64);
1531 send_vhost_reply(fd, &msg);
1533 case VHOST_USER_SET_FEATURES:
1534 ret = vhost_user_set_features(dev, msg.payload.u64);
1539 case VHOST_USER_GET_PROTOCOL_FEATURES:
1540 vhost_user_get_protocol_features(dev, &msg);
1541 send_vhost_reply(fd, &msg);
1543 case VHOST_USER_SET_PROTOCOL_FEATURES:
1544 vhost_user_set_protocol_features(dev, msg.payload.u64);
1547 case VHOST_USER_SET_OWNER:
1548 vhost_user_set_owner();
1550 case VHOST_USER_RESET_OWNER:
1551 vhost_user_reset_owner(dev);
1554 case VHOST_USER_SET_MEM_TABLE:
1555 ret = vhost_user_set_mem_table(dev, &msg);
1558 case VHOST_USER_SET_LOG_BASE:
1559 vhost_user_set_log_base(dev, &msg);
1561 /* it needs a reply */
1562 msg.size = sizeof(msg.payload.u64);
1563 send_vhost_reply(fd, &msg);
1565 case VHOST_USER_SET_LOG_FD:
1567 RTE_LOG(INFO, VHOST_CONFIG, "not implemented.\n");
1570 case VHOST_USER_SET_VRING_NUM:
1571 vhost_user_set_vring_num(dev, &msg);
1573 case VHOST_USER_SET_VRING_ADDR:
1574 vhost_user_set_vring_addr(&dev, &msg);
1576 case VHOST_USER_SET_VRING_BASE:
1577 vhost_user_set_vring_base(dev, &msg);
1580 case VHOST_USER_GET_VRING_BASE:
1581 vhost_user_get_vring_base(dev, &msg);
1582 msg.size = sizeof(msg.payload.state);
1583 send_vhost_reply(fd, &msg);
1586 case VHOST_USER_SET_VRING_KICK:
1587 vhost_user_set_vring_kick(&dev, &msg);
1589 case VHOST_USER_SET_VRING_CALL:
1590 vhost_user_set_vring_call(dev, &msg);
1593 case VHOST_USER_SET_VRING_ERR:
1594 if (!(msg.payload.u64 & VHOST_USER_VRING_NOFD_MASK))
1596 RTE_LOG(INFO, VHOST_CONFIG, "not implemented\n");
1599 case VHOST_USER_GET_QUEUE_NUM:
1600 msg.payload.u64 = (uint64_t)vhost_user_get_queue_num(dev);
1601 msg.size = sizeof(msg.payload.u64);
1602 send_vhost_reply(fd, &msg);
1605 case VHOST_USER_SET_VRING_ENABLE:
1606 vhost_user_set_vring_enable(dev, &msg);
1608 case VHOST_USER_SEND_RARP:
1609 vhost_user_send_rarp(dev, &msg);
1612 case VHOST_USER_NET_SET_MTU:
1613 ret = vhost_user_net_set_mtu(dev, &msg);
1616 case VHOST_USER_SET_SLAVE_REQ_FD:
1617 ret = vhost_user_set_req_fd(dev, &msg);
1620 case VHOST_USER_IOTLB_MSG:
1621 ret = vhost_user_iotlb_msg(&dev, &msg);
1629 skip_to_post_handle:
1630 if (dev->extern_ops.post_msg_handle) {
1631 uint32_t need_reply;
1633 ret = (*dev->extern_ops.post_msg_handle)(
1634 dev->vid, (void *)&msg, &need_reply);
1639 send_vhost_reply(fd, &msg);
1643 if (unlock_required)
1644 vhost_user_unlock_all_queue_pairs(dev);
1646 if (msg.flags & VHOST_USER_NEED_REPLY) {
1647 msg.payload.u64 = !!ret;
1648 msg.size = sizeof(msg.payload.u64);
1649 send_vhost_reply(fd, &msg);
1652 if (!(dev->flags & VIRTIO_DEV_RUNNING) && virtio_is_ready(dev)) {
1653 dev->flags |= VIRTIO_DEV_READY;
1655 if (!(dev->flags & VIRTIO_DEV_RUNNING)) {
1656 if (dev->dequeue_zero_copy) {
1657 RTE_LOG(INFO, VHOST_CONFIG,
1658 "dequeue zero copy is enabled\n");
1661 if (dev->notify_ops->new_device(dev->vid) == 0)
1662 dev->flags |= VIRTIO_DEV_RUNNING;
1666 did = dev->vdpa_dev_id;
1667 vdpa_dev = rte_vdpa_get_device(did);
1668 if (vdpa_dev && virtio_is_ready(dev) &&
1669 !(dev->flags & VIRTIO_DEV_VDPA_CONFIGURED) &&
1670 msg.request.master == VHOST_USER_SET_VRING_ENABLE) {
1671 if (vdpa_dev->ops->dev_conf)
1672 vdpa_dev->ops->dev_conf(dev->vid);
1673 dev->flags |= VIRTIO_DEV_VDPA_CONFIGURED;
1680 vhost_user_iotlb_miss(struct virtio_net *dev, uint64_t iova, uint8_t perm)
1683 struct VhostUserMsg msg = {
1684 .request.slave = VHOST_USER_SLAVE_IOTLB_MSG,
1685 .flags = VHOST_USER_VERSION,
1686 .size = sizeof(msg.payload.iotlb),
1690 .type = VHOST_IOTLB_MISS,
1694 ret = send_vhost_message(dev->slave_req_fd, &msg, NULL, 0);
1696 RTE_LOG(ERR, VHOST_CONFIG,
1697 "Failed to send IOTLB miss message (%d)\n",