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",
78 ret = fstat(fd, &stat);
79 return ret == -1 ? (uint64_t)-1 : (uint64_t)stat.st_blksize;
83 free_mem_region(struct virtio_net *dev)
86 struct rte_vhost_mem_region *reg;
88 if (!dev || !dev->mem)
91 for (i = 0; i < dev->mem->nregions; i++) {
92 reg = &dev->mem->regions[i];
93 if (reg->host_user_addr) {
94 munmap(reg->mmap_addr, reg->mmap_size);
101 vhost_backend_cleanup(struct virtio_net *dev)
104 free_mem_region(dev);
109 free(dev->guest_pages);
110 dev->guest_pages = NULL;
113 munmap((void *)(uintptr_t)dev->log_addr, dev->log_size);
117 if (dev->slave_req_fd >= 0) {
118 close(dev->slave_req_fd);
119 dev->slave_req_fd = -1;
124 * This function just returns success at the moment unless
125 * the device hasn't been initialised.
128 vhost_user_set_owner(void)
134 vhost_user_reset_owner(struct virtio_net *dev)
136 struct rte_vdpa_device *vdpa_dev;
139 if (dev->flags & VIRTIO_DEV_RUNNING) {
140 did = dev->vdpa_dev_id;
141 vdpa_dev = rte_vdpa_get_device(did);
142 if (vdpa_dev && vdpa_dev->ops->dev_close)
143 vdpa_dev->ops->dev_close(dev->vid);
144 dev->flags &= ~VIRTIO_DEV_RUNNING;
145 dev->notify_ops->destroy_device(dev->vid);
148 cleanup_device(dev, 0);
154 * The features that we support are requested.
157 vhost_user_get_features(struct virtio_net *dev)
159 uint64_t features = 0;
161 rte_vhost_driver_get_features(dev->ifname, &features);
166 * The queue number that we support are requested.
169 vhost_user_get_queue_num(struct virtio_net *dev)
171 uint32_t queue_num = 0;
173 rte_vhost_driver_get_queue_num(dev->ifname, &queue_num);
178 * We receive the negotiated features supported by us and the virtio device.
181 vhost_user_set_features(struct virtio_net *dev, uint64_t features)
183 uint64_t vhost_features = 0;
184 struct rte_vdpa_device *vdpa_dev;
187 rte_vhost_driver_get_features(dev->ifname, &vhost_features);
188 if (features & ~vhost_features) {
189 RTE_LOG(ERR, VHOST_CONFIG,
190 "(%d) received invalid negotiated features.\n",
195 if (dev->flags & VIRTIO_DEV_RUNNING) {
196 if (dev->features == features)
200 * Error out if master tries to change features while device is
201 * in running state. The exception being VHOST_F_LOG_ALL, which
202 * is enabled when the live-migration starts.
204 if ((dev->features ^ features) & ~(1ULL << VHOST_F_LOG_ALL)) {
205 RTE_LOG(ERR, VHOST_CONFIG,
206 "(%d) features changed while device is running.\n",
211 if (dev->notify_ops->features_changed)
212 dev->notify_ops->features_changed(dev->vid, features);
215 did = dev->vdpa_dev_id;
216 vdpa_dev = rte_vdpa_get_device(did);
217 if (vdpa_dev && vdpa_dev->ops->set_features)
218 vdpa_dev->ops->set_features(dev->vid);
220 dev->features = features;
222 ((1 << VIRTIO_NET_F_MRG_RXBUF) | (1ULL << VIRTIO_F_VERSION_1))) {
223 dev->vhost_hlen = sizeof(struct virtio_net_hdr_mrg_rxbuf);
225 dev->vhost_hlen = sizeof(struct virtio_net_hdr);
227 VHOST_LOG_DEBUG(VHOST_CONFIG,
228 "(%d) mergeable RX buffers %s, virtio 1 %s\n",
230 (dev->features & (1 << VIRTIO_NET_F_MRG_RXBUF)) ? "on" : "off",
231 (dev->features & (1ULL << VIRTIO_F_VERSION_1)) ? "on" : "off");
233 if ((dev->flags & VIRTIO_DEV_BUILTIN_VIRTIO_NET) &&
234 !(dev->features & (1ULL << VIRTIO_NET_F_MQ))) {
236 * Remove all but first queue pair if MQ hasn't been
237 * negotiated. This is safe because the device is not
238 * running at this stage.
240 while (dev->nr_vring > 2) {
241 struct vhost_virtqueue *vq;
243 vq = dev->virtqueue[--dev->nr_vring];
247 dev->virtqueue[dev->nr_vring] = NULL;
257 * The virtio device sends us the size of the descriptor ring.
260 vhost_user_set_vring_num(struct virtio_net *dev,
263 struct vhost_virtqueue *vq = dev->virtqueue[msg->payload.state.index];
265 vq->size = msg->payload.state.num;
267 /* VIRTIO 1.0, 2.4 Virtqueues says:
269 * Queue Size value is always a power of 2. The maximum Queue Size
272 if ((vq->size & (vq->size - 1)) || vq->size > 32768) {
273 RTE_LOG(ERR, VHOST_CONFIG,
274 "invalid virtqueue size %u\n", vq->size);
278 if (dev->dequeue_zero_copy) {
280 vq->last_zmbuf_idx = 0;
281 vq->zmbuf_size = vq->size;
282 vq->zmbufs = rte_zmalloc(NULL, vq->zmbuf_size *
283 sizeof(struct zcopy_mbuf), 0);
284 if (vq->zmbufs == NULL) {
285 RTE_LOG(WARNING, VHOST_CONFIG,
286 "failed to allocate mem for zero copy; "
287 "zero copy is force disabled\n");
288 dev->dequeue_zero_copy = 0;
290 TAILQ_INIT(&vq->zmbuf_list);
293 vq->shadow_used_ring = rte_malloc(NULL,
294 vq->size * sizeof(struct vring_used_elem),
295 RTE_CACHE_LINE_SIZE);
296 if (!vq->shadow_used_ring) {
297 RTE_LOG(ERR, VHOST_CONFIG,
298 "failed to allocate memory for shadow used ring.\n");
302 vq->batch_copy_elems = rte_malloc(NULL,
303 vq->size * sizeof(struct batch_copy_elem),
304 RTE_CACHE_LINE_SIZE);
305 if (!vq->batch_copy_elems) {
306 RTE_LOG(ERR, VHOST_CONFIG,
307 "failed to allocate memory for batching copy.\n");
315 * Reallocate virtio_dev and vhost_virtqueue data structure to make them on the
316 * same numa node as the memory of vring descriptor.
318 #ifdef RTE_LIBRTE_VHOST_NUMA
319 static struct virtio_net*
320 numa_realloc(struct virtio_net *dev, int index)
322 int oldnode, newnode;
323 struct virtio_net *old_dev;
324 struct vhost_virtqueue *old_vq, *vq;
325 struct zcopy_mbuf *new_zmbuf;
326 struct vring_used_elem *new_shadow_used_ring;
327 struct batch_copy_elem *new_batch_copy_elems;
331 vq = old_vq = dev->virtqueue[index];
333 ret = get_mempolicy(&newnode, NULL, 0, old_vq->desc,
334 MPOL_F_NODE | MPOL_F_ADDR);
336 /* check if we need to reallocate vq */
337 ret |= get_mempolicy(&oldnode, NULL, 0, old_vq,
338 MPOL_F_NODE | MPOL_F_ADDR);
340 RTE_LOG(ERR, VHOST_CONFIG,
341 "Unable to get vq numa information.\n");
344 if (oldnode != newnode) {
345 RTE_LOG(INFO, VHOST_CONFIG,
346 "reallocate vq from %d to %d node\n", oldnode, newnode);
347 vq = rte_malloc_socket(NULL, sizeof(*vq), 0, newnode);
351 memcpy(vq, old_vq, sizeof(*vq));
352 TAILQ_INIT(&vq->zmbuf_list);
354 new_zmbuf = rte_malloc_socket(NULL, vq->zmbuf_size *
355 sizeof(struct zcopy_mbuf), 0, newnode);
357 rte_free(vq->zmbufs);
358 vq->zmbufs = new_zmbuf;
361 new_shadow_used_ring = rte_malloc_socket(NULL,
362 vq->size * sizeof(struct vring_used_elem),
365 if (new_shadow_used_ring) {
366 rte_free(vq->shadow_used_ring);
367 vq->shadow_used_ring = new_shadow_used_ring;
370 new_batch_copy_elems = rte_malloc_socket(NULL,
371 vq->size * sizeof(struct batch_copy_elem),
374 if (new_batch_copy_elems) {
375 rte_free(vq->batch_copy_elems);
376 vq->batch_copy_elems = new_batch_copy_elems;
382 /* check if we need to reallocate dev */
383 ret = get_mempolicy(&oldnode, NULL, 0, old_dev,
384 MPOL_F_NODE | MPOL_F_ADDR);
386 RTE_LOG(ERR, VHOST_CONFIG,
387 "Unable to get dev numa information.\n");
390 if (oldnode != newnode) {
391 RTE_LOG(INFO, VHOST_CONFIG,
392 "reallocate dev from %d to %d node\n",
394 dev = rte_malloc_socket(NULL, sizeof(*dev), 0, newnode);
400 memcpy(dev, old_dev, sizeof(*dev));
405 dev->virtqueue[index] = vq;
406 vhost_devices[dev->vid] = dev;
409 vhost_user_iotlb_init(dev, index);
414 static struct virtio_net*
415 numa_realloc(struct virtio_net *dev, int index __rte_unused)
421 /* Converts QEMU virtual address to Vhost virtual address. */
423 qva_to_vva(struct virtio_net *dev, uint64_t qva)
425 struct rte_vhost_mem_region *reg;
428 /* Find the region where the address lives. */
429 for (i = 0; i < dev->mem->nregions; i++) {
430 reg = &dev->mem->regions[i];
432 if (qva >= reg->guest_user_addr &&
433 qva < reg->guest_user_addr + reg->size) {
434 return qva - reg->guest_user_addr +
444 * Converts ring address to Vhost virtual address.
445 * If IOMMU is enabled, the ring address is a guest IO virtual address,
446 * else it is a QEMU virtual address.
449 ring_addr_to_vva(struct virtio_net *dev, struct vhost_virtqueue *vq,
450 uint64_t ra, uint64_t size)
452 if (dev->features & (1ULL << VIRTIO_F_IOMMU_PLATFORM)) {
455 vva = vhost_user_iotlb_cache_find(vq, ra,
456 &size, VHOST_ACCESS_RW);
458 vhost_user_iotlb_miss(dev, ra, VHOST_ACCESS_RW);
463 return qva_to_vva(dev, ra);
466 static struct virtio_net *
467 translate_ring_addresses(struct virtio_net *dev, int vq_index)
469 struct vhost_virtqueue *vq = dev->virtqueue[vq_index];
470 struct vhost_vring_addr *addr = &vq->ring_addrs;
472 /* The addresses are converted from QEMU virtual to Vhost virtual. */
473 if (vq->desc && vq->avail && vq->used)
476 vq->desc = (struct vring_desc *)(uintptr_t)ring_addr_to_vva(dev,
477 vq, addr->desc_user_addr, sizeof(struct vring_desc));
479 RTE_LOG(DEBUG, VHOST_CONFIG,
480 "(%d) failed to find desc ring address.\n",
485 dev = numa_realloc(dev, vq_index);
486 vq = dev->virtqueue[vq_index];
487 addr = &vq->ring_addrs;
489 vq->avail = (struct vring_avail *)(uintptr_t)ring_addr_to_vva(dev,
490 vq, addr->avail_user_addr, sizeof(struct vring_avail));
491 if (vq->avail == 0) {
492 RTE_LOG(DEBUG, VHOST_CONFIG,
493 "(%d) failed to find avail ring address.\n",
498 vq->used = (struct vring_used *)(uintptr_t)ring_addr_to_vva(dev,
499 vq, addr->used_user_addr, sizeof(struct vring_used));
501 RTE_LOG(DEBUG, VHOST_CONFIG,
502 "(%d) failed to find used ring address.\n",
507 if (vq->last_used_idx != vq->used->idx) {
508 RTE_LOG(WARNING, VHOST_CONFIG,
509 "last_used_idx (%u) and vq->used->idx (%u) mismatches; "
510 "some packets maybe resent for Tx and dropped for Rx\n",
511 vq->last_used_idx, vq->used->idx);
512 vq->last_used_idx = vq->used->idx;
513 vq->last_avail_idx = vq->used->idx;
516 vq->log_guest_addr = addr->log_guest_addr;
518 VHOST_LOG_DEBUG(VHOST_CONFIG, "(%d) mapped address desc: %p\n",
520 VHOST_LOG_DEBUG(VHOST_CONFIG, "(%d) mapped address avail: %p\n",
521 dev->vid, vq->avail);
522 VHOST_LOG_DEBUG(VHOST_CONFIG, "(%d) mapped address used: %p\n",
524 VHOST_LOG_DEBUG(VHOST_CONFIG, "(%d) log_guest_addr: %" PRIx64 "\n",
525 dev->vid, vq->log_guest_addr);
531 * The virtio device sends us the desc, used and avail ring addresses.
532 * This function then converts these to our address space.
535 vhost_user_set_vring_addr(struct virtio_net **pdev, VhostUserMsg *msg)
537 struct vhost_virtqueue *vq;
538 struct vhost_vring_addr *addr = &msg->payload.addr;
539 struct virtio_net *dev = *pdev;
541 if (dev->mem == NULL)
544 /* addr->index refers to the queue index. The txq 1, rxq is 0. */
545 vq = dev->virtqueue[msg->payload.addr.index];
548 * Rings addresses should not be interpreted as long as the ring is not
549 * started and enabled
551 memcpy(&vq->ring_addrs, addr, sizeof(*addr));
553 vring_invalidate(dev, vq);
555 if (vq->enabled && (dev->features &
556 (1ULL << VHOST_USER_F_PROTOCOL_FEATURES))) {
557 dev = translate_ring_addresses(dev, msg->payload.addr.index);
568 * The virtio device sends us the available ring last used index.
571 vhost_user_set_vring_base(struct virtio_net *dev,
574 dev->virtqueue[msg->payload.state.index]->last_used_idx =
575 msg->payload.state.num;
576 dev->virtqueue[msg->payload.state.index]->last_avail_idx =
577 msg->payload.state.num;
583 add_one_guest_page(struct virtio_net *dev, uint64_t guest_phys_addr,
584 uint64_t host_phys_addr, uint64_t size)
586 struct guest_page *page, *last_page;
588 if (dev->nr_guest_pages == dev->max_guest_pages) {
589 dev->max_guest_pages *= 2;
590 dev->guest_pages = realloc(dev->guest_pages,
591 dev->max_guest_pages * sizeof(*page));
592 if (!dev->guest_pages) {
593 RTE_LOG(ERR, VHOST_CONFIG, "cannot realloc guest_pages\n");
598 if (dev->nr_guest_pages > 0) {
599 last_page = &dev->guest_pages[dev->nr_guest_pages - 1];
600 /* merge if the two pages are continuous */
601 if (host_phys_addr == last_page->host_phys_addr +
603 last_page->size += size;
608 page = &dev->guest_pages[dev->nr_guest_pages++];
609 page->guest_phys_addr = guest_phys_addr;
610 page->host_phys_addr = host_phys_addr;
617 add_guest_pages(struct virtio_net *dev, struct rte_vhost_mem_region *reg,
620 uint64_t reg_size = reg->size;
621 uint64_t host_user_addr = reg->host_user_addr;
622 uint64_t guest_phys_addr = reg->guest_phys_addr;
623 uint64_t host_phys_addr;
626 host_phys_addr = rte_mem_virt2iova((void *)(uintptr_t)host_user_addr);
627 size = page_size - (guest_phys_addr & (page_size - 1));
628 size = RTE_MIN(size, reg_size);
630 if (add_one_guest_page(dev, guest_phys_addr, host_phys_addr, size) < 0)
633 host_user_addr += size;
634 guest_phys_addr += size;
637 while (reg_size > 0) {
638 size = RTE_MIN(reg_size, page_size);
639 host_phys_addr = rte_mem_virt2iova((void *)(uintptr_t)
641 if (add_one_guest_page(dev, guest_phys_addr, host_phys_addr,
645 host_user_addr += size;
646 guest_phys_addr += size;
653 #ifdef RTE_LIBRTE_VHOST_DEBUG
654 /* TODO: enable it only in debug mode? */
656 dump_guest_pages(struct virtio_net *dev)
659 struct guest_page *page;
661 for (i = 0; i < dev->nr_guest_pages; i++) {
662 page = &dev->guest_pages[i];
664 RTE_LOG(INFO, VHOST_CONFIG,
665 "guest physical page region %u\n"
666 "\t guest_phys_addr: %" PRIx64 "\n"
667 "\t host_phys_addr : %" PRIx64 "\n"
668 "\t size : %" PRIx64 "\n",
670 page->guest_phys_addr,
671 page->host_phys_addr,
676 #define dump_guest_pages(dev)
680 vhost_memory_changed(struct VhostUserMemory *new,
681 struct rte_vhost_memory *old)
685 if (new->nregions != old->nregions)
688 for (i = 0; i < new->nregions; ++i) {
689 VhostUserMemoryRegion *new_r = &new->regions[i];
690 struct rte_vhost_mem_region *old_r = &old->regions[i];
692 if (new_r->guest_phys_addr != old_r->guest_phys_addr)
694 if (new_r->memory_size != old_r->size)
696 if (new_r->userspace_addr != old_r->guest_user_addr)
704 vhost_user_set_mem_table(struct virtio_net *dev, struct VhostUserMsg *pmsg)
706 struct VhostUserMemory memory = pmsg->payload.memory;
707 struct rte_vhost_mem_region *reg;
710 uint64_t mmap_offset;
716 if (memory.nregions > VHOST_MEMORY_MAX_NREGIONS) {
717 RTE_LOG(ERR, VHOST_CONFIG,
718 "too many memory regions (%u)\n", memory.nregions);
722 if (dev->mem && !vhost_memory_changed(&memory, dev->mem)) {
723 RTE_LOG(INFO, VHOST_CONFIG,
724 "(%d) memory regions not changed\n", dev->vid);
726 for (i = 0; i < memory.nregions; i++)
733 free_mem_region(dev);
738 dev->nr_guest_pages = 0;
739 if (!dev->guest_pages) {
740 dev->max_guest_pages = 8;
741 dev->guest_pages = malloc(dev->max_guest_pages *
742 sizeof(struct guest_page));
743 if (dev->guest_pages == NULL) {
744 RTE_LOG(ERR, VHOST_CONFIG,
745 "(%d) failed to allocate memory "
746 "for dev->guest_pages\n",
752 dev->mem = rte_zmalloc("vhost-mem-table", sizeof(struct rte_vhost_memory) +
753 sizeof(struct rte_vhost_mem_region) * memory.nregions, 0);
754 if (dev->mem == NULL) {
755 RTE_LOG(ERR, VHOST_CONFIG,
756 "(%d) failed to allocate memory for dev->mem\n",
760 dev->mem->nregions = memory.nregions;
762 for (i = 0; i < memory.nregions; i++) {
764 reg = &dev->mem->regions[i];
766 reg->guest_phys_addr = memory.regions[i].guest_phys_addr;
767 reg->guest_user_addr = memory.regions[i].userspace_addr;
768 reg->size = memory.regions[i].memory_size;
771 mmap_offset = memory.regions[i].mmap_offset;
773 /* Check for memory_size + mmap_offset overflow */
774 if (mmap_offset >= -reg->size) {
775 RTE_LOG(ERR, VHOST_CONFIG,
776 "mmap_offset (%#"PRIx64") and memory_size "
777 "(%#"PRIx64") overflow\n",
778 mmap_offset, reg->size);
782 mmap_size = reg->size + mmap_offset;
784 /* mmap() without flag of MAP_ANONYMOUS, should be called
785 * with length argument aligned with hugepagesz at older
786 * longterm version Linux, like 2.6.32 and 3.2.72, or
787 * mmap() will fail with EINVAL.
789 * to avoid failure, make sure in caller to keep length
792 alignment = get_blk_size(fd);
793 if (alignment == (uint64_t)-1) {
794 RTE_LOG(ERR, VHOST_CONFIG,
795 "couldn't get hugepage size through fstat\n");
798 mmap_size = RTE_ALIGN_CEIL(mmap_size, alignment);
800 populate = (dev->dequeue_zero_copy) ? MAP_POPULATE : 0;
801 mmap_addr = mmap(NULL, mmap_size, PROT_READ | PROT_WRITE,
802 MAP_SHARED | populate, fd, 0);
804 if (mmap_addr == MAP_FAILED) {
805 RTE_LOG(ERR, VHOST_CONFIG,
806 "mmap region %u failed.\n", i);
810 reg->mmap_addr = mmap_addr;
811 reg->mmap_size = mmap_size;
812 reg->host_user_addr = (uint64_t)(uintptr_t)mmap_addr +
815 if (dev->dequeue_zero_copy)
816 if (add_guest_pages(dev, reg, alignment) < 0) {
817 RTE_LOG(ERR, VHOST_CONFIG,
818 "adding guest pages to region %u failed.\n",
823 RTE_LOG(INFO, VHOST_CONFIG,
824 "guest memory region %u, size: 0x%" PRIx64 "\n"
825 "\t guest physical addr: 0x%" PRIx64 "\n"
826 "\t guest virtual addr: 0x%" PRIx64 "\n"
827 "\t host virtual addr: 0x%" PRIx64 "\n"
828 "\t mmap addr : 0x%" PRIx64 "\n"
829 "\t mmap size : 0x%" PRIx64 "\n"
830 "\t mmap align: 0x%" PRIx64 "\n"
831 "\t mmap off : 0x%" PRIx64 "\n",
833 reg->guest_phys_addr,
834 reg->guest_user_addr,
836 (uint64_t)(uintptr_t)mmap_addr,
842 dump_guest_pages(dev);
847 free_mem_region(dev);
854 vq_is_ready(struct vhost_virtqueue *vq)
856 return vq && vq->desc && vq->avail && vq->used &&
857 vq->kickfd != VIRTIO_UNINITIALIZED_EVENTFD &&
858 vq->callfd != VIRTIO_UNINITIALIZED_EVENTFD;
862 virtio_is_ready(struct virtio_net *dev)
864 struct vhost_virtqueue *vq;
867 if (dev->nr_vring == 0)
870 for (i = 0; i < dev->nr_vring; i++) {
871 vq = dev->virtqueue[i];
873 if (!vq_is_ready(vq))
877 RTE_LOG(INFO, VHOST_CONFIG,
878 "virtio is now ready for processing.\n");
883 vhost_user_set_vring_call(struct virtio_net *dev, struct VhostUserMsg *pmsg)
885 struct vhost_vring_file file;
886 struct vhost_virtqueue *vq;
888 file.index = pmsg->payload.u64 & VHOST_USER_VRING_IDX_MASK;
889 if (pmsg->payload.u64 & VHOST_USER_VRING_NOFD_MASK)
890 file.fd = VIRTIO_INVALID_EVENTFD;
892 file.fd = pmsg->fds[0];
893 RTE_LOG(INFO, VHOST_CONFIG,
894 "vring call idx:%d file:%d\n", file.index, file.fd);
896 vq = dev->virtqueue[file.index];
900 vq->callfd = file.fd;
904 vhost_user_set_vring_kick(struct virtio_net **pdev, struct VhostUserMsg *pmsg)
906 struct vhost_vring_file file;
907 struct vhost_virtqueue *vq;
908 struct virtio_net *dev = *pdev;
910 file.index = pmsg->payload.u64 & VHOST_USER_VRING_IDX_MASK;
911 if (pmsg->payload.u64 & VHOST_USER_VRING_NOFD_MASK)
912 file.fd = VIRTIO_INVALID_EVENTFD;
914 file.fd = pmsg->fds[0];
915 RTE_LOG(INFO, VHOST_CONFIG,
916 "vring kick idx:%d file:%d\n", file.index, file.fd);
918 /* Interpret ring addresses only when ring is started. */
919 dev = translate_ring_addresses(dev, file.index);
925 vq = dev->virtqueue[file.index];
928 * When VHOST_USER_F_PROTOCOL_FEATURES is not negotiated,
929 * the ring starts already enabled. Otherwise, it is enabled via
930 * the SET_VRING_ENABLE message.
932 if (!(dev->features & (1ULL << VHOST_USER_F_PROTOCOL_FEATURES)))
937 vq->kickfd = file.fd;
941 free_zmbufs(struct vhost_virtqueue *vq)
943 struct zcopy_mbuf *zmbuf, *next;
945 for (zmbuf = TAILQ_FIRST(&vq->zmbuf_list);
946 zmbuf != NULL; zmbuf = next) {
947 next = TAILQ_NEXT(zmbuf, next);
949 rte_pktmbuf_free(zmbuf->mbuf);
950 TAILQ_REMOVE(&vq->zmbuf_list, zmbuf, next);
953 rte_free(vq->zmbufs);
957 * when virtio is stopped, qemu will send us the GET_VRING_BASE message.
960 vhost_user_get_vring_base(struct virtio_net *dev,
963 struct vhost_virtqueue *vq = dev->virtqueue[msg->payload.state.index];
964 struct rte_vdpa_device *vdpa_dev;
967 /* We have to stop the queue (virtio) if it is running. */
968 if (dev->flags & VIRTIO_DEV_RUNNING) {
969 did = dev->vdpa_dev_id;
970 vdpa_dev = rte_vdpa_get_device(did);
971 if (vdpa_dev && vdpa_dev->ops->dev_close)
972 vdpa_dev->ops->dev_close(dev->vid);
973 dev->flags &= ~VIRTIO_DEV_RUNNING;
974 dev->notify_ops->destroy_device(dev->vid);
977 dev->flags &= ~VIRTIO_DEV_READY;
978 dev->flags &= ~VIRTIO_DEV_VDPA_CONFIGURED;
980 /* Here we are safe to get the last avail index */
981 msg->payload.state.num = vq->last_avail_idx;
983 RTE_LOG(INFO, VHOST_CONFIG,
984 "vring base idx:%d file:%d\n", msg->payload.state.index,
985 msg->payload.state.num);
987 * Based on current qemu vhost-user implementation, this message is
988 * sent and only sent in vhost_vring_stop.
989 * TODO: cleanup the vring, it isn't usable since here.
994 vq->kickfd = VIRTIO_UNINITIALIZED_EVENTFD;
999 vq->callfd = VIRTIO_UNINITIALIZED_EVENTFD;
1001 if (dev->dequeue_zero_copy)
1003 rte_free(vq->shadow_used_ring);
1004 vq->shadow_used_ring = NULL;
1006 rte_free(vq->batch_copy_elems);
1007 vq->batch_copy_elems = NULL;
1013 * when virtio queues are ready to work, qemu will send us to
1014 * enable the virtio queue pair.
1017 vhost_user_set_vring_enable(struct virtio_net *dev,
1020 int enable = (int)msg->payload.state.num;
1021 int index = (int)msg->payload.state.index;
1022 struct rte_vdpa_device *vdpa_dev;
1025 RTE_LOG(INFO, VHOST_CONFIG,
1026 "set queue enable: %d to qp idx: %d\n",
1029 did = dev->vdpa_dev_id;
1030 vdpa_dev = rte_vdpa_get_device(did);
1031 if (vdpa_dev && vdpa_dev->ops->set_vring_state)
1032 vdpa_dev->ops->set_vring_state(dev->vid, index, enable);
1034 if (dev->notify_ops->vring_state_changed)
1035 dev->notify_ops->vring_state_changed(dev->vid,
1038 dev->virtqueue[index]->enabled = enable;
1044 vhost_user_get_protocol_features(struct virtio_net *dev,
1045 struct VhostUserMsg *msg)
1047 uint64_t features, protocol_features;
1049 rte_vhost_driver_get_features(dev->ifname, &features);
1050 rte_vhost_driver_get_protocol_features(dev->ifname, &protocol_features);
1053 * REPLY_ACK protocol feature is only mandatory for now
1054 * for IOMMU feature. If IOMMU is explicitly disabled by the
1055 * application, disable also REPLY_ACK feature for older buggy
1056 * Qemu versions (from v2.7.0 to v2.9.0).
1058 if (!(features & (1ULL << VIRTIO_F_IOMMU_PLATFORM)))
1059 protocol_features &= ~(1ULL << VHOST_USER_PROTOCOL_F_REPLY_ACK);
1061 msg->payload.u64 = protocol_features;
1062 msg->size = sizeof(msg->payload.u64);
1066 vhost_user_set_protocol_features(struct virtio_net *dev,
1067 uint64_t protocol_features)
1069 if (protocol_features & ~VHOST_USER_PROTOCOL_FEATURES)
1072 dev->protocol_features = protocol_features;
1076 vhost_user_set_log_base(struct virtio_net *dev, struct VhostUserMsg *msg)
1078 int fd = msg->fds[0];
1083 RTE_LOG(ERR, VHOST_CONFIG, "invalid log fd: %d\n", fd);
1087 if (msg->size != sizeof(VhostUserLog)) {
1088 RTE_LOG(ERR, VHOST_CONFIG,
1089 "invalid log base msg size: %"PRId32" != %d\n",
1090 msg->size, (int)sizeof(VhostUserLog));
1094 size = msg->payload.log.mmap_size;
1095 off = msg->payload.log.mmap_offset;
1097 /* Don't allow mmap_offset to point outside the mmap region */
1099 RTE_LOG(ERR, VHOST_CONFIG,
1100 "log offset %#"PRIx64" exceeds log size %#"PRIx64"\n",
1105 RTE_LOG(INFO, VHOST_CONFIG,
1106 "log mmap size: %"PRId64", offset: %"PRId64"\n",
1110 * mmap from 0 to workaround a hugepage mmap bug: mmap will
1111 * fail when offset is not page size aligned.
1113 addr = mmap(0, size + off, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
1115 if (addr == MAP_FAILED) {
1116 RTE_LOG(ERR, VHOST_CONFIG, "mmap log base failed!\n");
1121 * Free previously mapped log memory on occasionally
1122 * multiple VHOST_USER_SET_LOG_BASE.
1124 if (dev->log_addr) {
1125 munmap((void *)(uintptr_t)dev->log_addr, dev->log_size);
1127 dev->log_addr = (uint64_t)(uintptr_t)addr;
1128 dev->log_base = dev->log_addr + off;
1129 dev->log_size = size;
1135 * An rarp packet is constructed and broadcasted to notify switches about
1136 * the new location of the migrated VM, so that packets from outside will
1137 * not be lost after migration.
1139 * However, we don't actually "send" a rarp packet here, instead, we set
1140 * a flag 'broadcast_rarp' to let rte_vhost_dequeue_burst() inject it.
1143 vhost_user_send_rarp(struct virtio_net *dev, struct VhostUserMsg *msg)
1145 uint8_t *mac = (uint8_t *)&msg->payload.u64;
1146 struct rte_vdpa_device *vdpa_dev;
1149 RTE_LOG(DEBUG, VHOST_CONFIG,
1150 ":: mac: %02x:%02x:%02x:%02x:%02x:%02x\n",
1151 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
1152 memcpy(dev->mac.addr_bytes, mac, 6);
1155 * Set the flag to inject a RARP broadcast packet at
1156 * rte_vhost_dequeue_burst().
1158 * rte_smp_wmb() is for making sure the mac is copied
1159 * before the flag is set.
1162 rte_atomic16_set(&dev->broadcast_rarp, 1);
1163 did = dev->vdpa_dev_id;
1164 vdpa_dev = rte_vdpa_get_device(did);
1165 if (vdpa_dev && vdpa_dev->ops->migration_done)
1166 vdpa_dev->ops->migration_done(dev->vid);
1172 vhost_user_net_set_mtu(struct virtio_net *dev, struct VhostUserMsg *msg)
1174 if (msg->payload.u64 < VIRTIO_MIN_MTU ||
1175 msg->payload.u64 > VIRTIO_MAX_MTU) {
1176 RTE_LOG(ERR, VHOST_CONFIG, "Invalid MTU size (%"PRIu64")\n",
1182 dev->mtu = msg->payload.u64;
1188 vhost_user_set_req_fd(struct virtio_net *dev, struct VhostUserMsg *msg)
1190 int fd = msg->fds[0];
1193 RTE_LOG(ERR, VHOST_CONFIG,
1194 "Invalid file descriptor for slave channel (%d)\n",
1199 dev->slave_req_fd = fd;
1205 is_vring_iotlb_update(struct vhost_virtqueue *vq, struct vhost_iotlb_msg *imsg)
1207 struct vhost_vring_addr *ra;
1208 uint64_t start, end;
1211 end = start + imsg->size;
1213 ra = &vq->ring_addrs;
1214 if (ra->desc_user_addr >= start && ra->desc_user_addr < end)
1216 if (ra->avail_user_addr >= start && ra->avail_user_addr < end)
1218 if (ra->used_user_addr >= start && ra->used_user_addr < end)
1225 is_vring_iotlb_invalidate(struct vhost_virtqueue *vq,
1226 struct vhost_iotlb_msg *imsg)
1228 uint64_t istart, iend, vstart, vend;
1230 istart = imsg->iova;
1231 iend = istart + imsg->size - 1;
1233 vstart = (uintptr_t)vq->desc;
1234 vend = vstart + sizeof(struct vring_desc) * vq->size - 1;
1235 if (vstart <= iend && istart <= vend)
1238 vstart = (uintptr_t)vq->avail;
1239 vend = vstart + sizeof(struct vring_avail);
1240 vend += sizeof(uint16_t) * vq->size - 1;
1241 if (vstart <= iend && istart <= vend)
1244 vstart = (uintptr_t)vq->used;
1245 vend = vstart + sizeof(struct vring_used);
1246 vend += sizeof(struct vring_used_elem) * vq->size - 1;
1247 if (vstart <= iend && istart <= vend)
1254 vhost_user_iotlb_msg(struct virtio_net **pdev, struct VhostUserMsg *msg)
1256 struct virtio_net *dev = *pdev;
1257 struct vhost_iotlb_msg *imsg = &msg->payload.iotlb;
1261 switch (imsg->type) {
1262 case VHOST_IOTLB_UPDATE:
1263 vva = qva_to_vva(dev, imsg->uaddr);
1267 for (i = 0; i < dev->nr_vring; i++) {
1268 struct vhost_virtqueue *vq = dev->virtqueue[i];
1270 vhost_user_iotlb_cache_insert(vq, imsg->iova, vva,
1271 imsg->size, imsg->perm);
1273 if (is_vring_iotlb_update(vq, imsg))
1274 *pdev = dev = translate_ring_addresses(dev, i);
1277 case VHOST_IOTLB_INVALIDATE:
1278 for (i = 0; i < dev->nr_vring; i++) {
1279 struct vhost_virtqueue *vq = dev->virtqueue[i];
1281 vhost_user_iotlb_cache_remove(vq, imsg->iova,
1284 if (is_vring_iotlb_invalidate(vq, imsg))
1285 vring_invalidate(dev, vq);
1289 RTE_LOG(ERR, VHOST_CONFIG, "Invalid IOTLB message type (%d)\n",
1297 /* return bytes# of read on success or negative val on failure. */
1299 read_vhost_message(int sockfd, struct VhostUserMsg *msg)
1303 ret = read_fd_message(sockfd, (char *)msg, VHOST_USER_HDR_SIZE,
1304 msg->fds, VHOST_MEMORY_MAX_NREGIONS);
1308 if (msg && msg->size) {
1309 if (msg->size > sizeof(msg->payload)) {
1310 RTE_LOG(ERR, VHOST_CONFIG,
1311 "invalid msg size: %d\n", msg->size);
1314 ret = read(sockfd, &msg->payload, msg->size);
1317 if (ret != (int)msg->size) {
1318 RTE_LOG(ERR, VHOST_CONFIG,
1319 "read control message failed\n");
1328 send_vhost_message(int sockfd, struct VhostUserMsg *msg, int *fds, int fd_num)
1333 return send_fd_message(sockfd, (char *)msg,
1334 VHOST_USER_HDR_SIZE + msg->size, fds, fd_num);
1338 send_vhost_reply(int sockfd, struct VhostUserMsg *msg)
1343 msg->flags &= ~VHOST_USER_VERSION_MASK;
1344 msg->flags &= ~VHOST_USER_NEED_REPLY;
1345 msg->flags |= VHOST_USER_VERSION;
1346 msg->flags |= VHOST_USER_REPLY_MASK;
1348 return send_vhost_message(sockfd, msg, NULL, 0);
1352 * Allocate a queue pair if it hasn't been allocated yet
1355 vhost_user_check_and_alloc_queue_pair(struct virtio_net *dev, VhostUserMsg *msg)
1359 switch (msg->request.master) {
1360 case VHOST_USER_SET_VRING_KICK:
1361 case VHOST_USER_SET_VRING_CALL:
1362 case VHOST_USER_SET_VRING_ERR:
1363 vring_idx = msg->payload.u64 & VHOST_USER_VRING_IDX_MASK;
1365 case VHOST_USER_SET_VRING_NUM:
1366 case VHOST_USER_SET_VRING_BASE:
1367 case VHOST_USER_SET_VRING_ENABLE:
1368 vring_idx = msg->payload.state.index;
1370 case VHOST_USER_SET_VRING_ADDR:
1371 vring_idx = msg->payload.addr.index;
1377 if (vring_idx >= VHOST_MAX_VRING) {
1378 RTE_LOG(ERR, VHOST_CONFIG,
1379 "invalid vring index: %u\n", vring_idx);
1383 if (dev->virtqueue[vring_idx])
1386 return alloc_vring_queue(dev, vring_idx);
1390 vhost_user_lock_all_queue_pairs(struct virtio_net *dev)
1393 unsigned int vq_num = 0;
1395 while (vq_num < dev->nr_vring) {
1396 struct vhost_virtqueue *vq = dev->virtqueue[i];
1399 rte_spinlock_lock(&vq->access_lock);
1407 vhost_user_unlock_all_queue_pairs(struct virtio_net *dev)
1410 unsigned int vq_num = 0;
1412 while (vq_num < dev->nr_vring) {
1413 struct vhost_virtqueue *vq = dev->virtqueue[i];
1416 rte_spinlock_unlock(&vq->access_lock);
1424 vhost_user_msg_handler(int vid, int fd)
1426 struct virtio_net *dev;
1427 struct VhostUserMsg msg;
1428 struct rte_vdpa_device *vdpa_dev;
1431 int unlock_required = 0;
1432 uint32_t skip_master = 0;
1434 dev = get_device(vid);
1438 if (!dev->notify_ops) {
1439 dev->notify_ops = vhost_driver_callback_get(dev->ifname);
1440 if (!dev->notify_ops) {
1441 RTE_LOG(ERR, VHOST_CONFIG,
1442 "failed to get callback ops for driver %s\n",
1448 ret = read_vhost_message(fd, &msg);
1449 if (ret <= 0 || msg.request.master >= VHOST_USER_MAX) {
1451 RTE_LOG(ERR, VHOST_CONFIG,
1452 "vhost read message failed\n");
1454 RTE_LOG(INFO, VHOST_CONFIG,
1455 "vhost peer closed\n");
1457 RTE_LOG(ERR, VHOST_CONFIG,
1458 "vhost read incorrect message\n");
1464 if (msg.request.master != VHOST_USER_IOTLB_MSG)
1465 RTE_LOG(INFO, VHOST_CONFIG, "read message %s\n",
1466 vhost_message_str[msg.request.master]);
1468 RTE_LOG(DEBUG, VHOST_CONFIG, "read message %s\n",
1469 vhost_message_str[msg.request.master]);
1471 ret = vhost_user_check_and_alloc_queue_pair(dev, &msg);
1473 RTE_LOG(ERR, VHOST_CONFIG,
1474 "failed to alloc queue\n");
1479 * Note: we don't lock all queues on VHOST_USER_GET_VRING_BASE
1480 * and VHOST_USER_RESET_OWNER, since it is sent when virtio stops
1481 * and device is destroyed. destroy_device waits for queues to be
1482 * inactive, so it is safe. Otherwise taking the access_lock
1483 * would cause a dead lock.
1485 switch (msg.request.master) {
1486 case VHOST_USER_SET_FEATURES:
1487 case VHOST_USER_SET_PROTOCOL_FEATURES:
1488 case VHOST_USER_SET_OWNER:
1489 case VHOST_USER_SET_MEM_TABLE:
1490 case VHOST_USER_SET_LOG_BASE:
1491 case VHOST_USER_SET_LOG_FD:
1492 case VHOST_USER_SET_VRING_NUM:
1493 case VHOST_USER_SET_VRING_ADDR:
1494 case VHOST_USER_SET_VRING_BASE:
1495 case VHOST_USER_SET_VRING_KICK:
1496 case VHOST_USER_SET_VRING_CALL:
1497 case VHOST_USER_SET_VRING_ERR:
1498 case VHOST_USER_SET_VRING_ENABLE:
1499 case VHOST_USER_SEND_RARP:
1500 case VHOST_USER_NET_SET_MTU:
1501 case VHOST_USER_SET_SLAVE_REQ_FD:
1502 vhost_user_lock_all_queue_pairs(dev);
1503 unlock_required = 1;
1510 if (dev->extern_ops.pre_msg_handle) {
1511 uint32_t need_reply;
1513 ret = (*dev->extern_ops.pre_msg_handle)(dev->vid,
1514 (void *)&msg, &need_reply, &skip_master);
1519 send_vhost_reply(fd, &msg);
1522 goto skip_to_post_handle;
1525 switch (msg.request.master) {
1526 case VHOST_USER_GET_FEATURES:
1527 msg.payload.u64 = vhost_user_get_features(dev);
1528 msg.size = sizeof(msg.payload.u64);
1529 send_vhost_reply(fd, &msg);
1531 case VHOST_USER_SET_FEATURES:
1532 ret = vhost_user_set_features(dev, msg.payload.u64);
1537 case VHOST_USER_GET_PROTOCOL_FEATURES:
1538 vhost_user_get_protocol_features(dev, &msg);
1539 send_vhost_reply(fd, &msg);
1541 case VHOST_USER_SET_PROTOCOL_FEATURES:
1542 vhost_user_set_protocol_features(dev, msg.payload.u64);
1545 case VHOST_USER_SET_OWNER:
1546 vhost_user_set_owner();
1548 case VHOST_USER_RESET_OWNER:
1549 vhost_user_reset_owner(dev);
1552 case VHOST_USER_SET_MEM_TABLE:
1553 ret = vhost_user_set_mem_table(dev, &msg);
1556 case VHOST_USER_SET_LOG_BASE:
1557 vhost_user_set_log_base(dev, &msg);
1559 /* it needs a reply */
1560 msg.size = sizeof(msg.payload.u64);
1561 send_vhost_reply(fd, &msg);
1563 case VHOST_USER_SET_LOG_FD:
1565 RTE_LOG(INFO, VHOST_CONFIG, "not implemented.\n");
1568 case VHOST_USER_SET_VRING_NUM:
1569 vhost_user_set_vring_num(dev, &msg);
1571 case VHOST_USER_SET_VRING_ADDR:
1572 vhost_user_set_vring_addr(&dev, &msg);
1574 case VHOST_USER_SET_VRING_BASE:
1575 vhost_user_set_vring_base(dev, &msg);
1578 case VHOST_USER_GET_VRING_BASE:
1579 vhost_user_get_vring_base(dev, &msg);
1580 msg.size = sizeof(msg.payload.state);
1581 send_vhost_reply(fd, &msg);
1584 case VHOST_USER_SET_VRING_KICK:
1585 vhost_user_set_vring_kick(&dev, &msg);
1587 case VHOST_USER_SET_VRING_CALL:
1588 vhost_user_set_vring_call(dev, &msg);
1591 case VHOST_USER_SET_VRING_ERR:
1592 if (!(msg.payload.u64 & VHOST_USER_VRING_NOFD_MASK))
1594 RTE_LOG(INFO, VHOST_CONFIG, "not implemented\n");
1597 case VHOST_USER_GET_QUEUE_NUM:
1598 msg.payload.u64 = (uint64_t)vhost_user_get_queue_num(dev);
1599 msg.size = sizeof(msg.payload.u64);
1600 send_vhost_reply(fd, &msg);
1603 case VHOST_USER_SET_VRING_ENABLE:
1604 vhost_user_set_vring_enable(dev, &msg);
1606 case VHOST_USER_SEND_RARP:
1607 vhost_user_send_rarp(dev, &msg);
1610 case VHOST_USER_NET_SET_MTU:
1611 ret = vhost_user_net_set_mtu(dev, &msg);
1614 case VHOST_USER_SET_SLAVE_REQ_FD:
1615 ret = vhost_user_set_req_fd(dev, &msg);
1618 case VHOST_USER_IOTLB_MSG:
1619 ret = vhost_user_iotlb_msg(&dev, &msg);
1627 skip_to_post_handle:
1628 if (dev->extern_ops.post_msg_handle) {
1629 uint32_t need_reply;
1631 ret = (*dev->extern_ops.post_msg_handle)(
1632 dev->vid, (void *)&msg, &need_reply);
1637 send_vhost_reply(fd, &msg);
1641 if (unlock_required)
1642 vhost_user_unlock_all_queue_pairs(dev);
1644 if (msg.flags & VHOST_USER_NEED_REPLY) {
1645 msg.payload.u64 = !!ret;
1646 msg.size = sizeof(msg.payload.u64);
1647 send_vhost_reply(fd, &msg);
1650 if (!(dev->flags & VIRTIO_DEV_RUNNING) && virtio_is_ready(dev)) {
1651 dev->flags |= VIRTIO_DEV_READY;
1653 if (!(dev->flags & VIRTIO_DEV_RUNNING)) {
1654 if (dev->dequeue_zero_copy) {
1655 RTE_LOG(INFO, VHOST_CONFIG,
1656 "dequeue zero copy is enabled\n");
1659 if (dev->notify_ops->new_device(dev->vid) == 0)
1660 dev->flags |= VIRTIO_DEV_RUNNING;
1664 did = dev->vdpa_dev_id;
1665 vdpa_dev = rte_vdpa_get_device(did);
1666 if (vdpa_dev && virtio_is_ready(dev) &&
1667 !(dev->flags & VIRTIO_DEV_VDPA_CONFIGURED) &&
1668 msg.request.master == VHOST_USER_SET_VRING_ENABLE) {
1669 if (vdpa_dev->ops->dev_conf)
1670 vdpa_dev->ops->dev_conf(dev->vid);
1671 dev->flags |= VIRTIO_DEV_VDPA_CONFIGURED;
1678 vhost_user_iotlb_miss(struct virtio_net *dev, uint64_t iova, uint8_t perm)
1681 struct VhostUserMsg msg = {
1682 .request.slave = VHOST_USER_SLAVE_IOTLB_MSG,
1683 .flags = VHOST_USER_VERSION,
1684 .size = sizeof(msg.payload.iotlb),
1688 .type = VHOST_IOTLB_MISS,
1692 ret = send_vhost_message(dev->slave_req_fd, &msg, NULL, 0);
1694 RTE_LOG(ERR, VHOST_CONFIG,
1695 "Failed to send IOTLB miss message (%d)\n",