/* SPDX-License-Identifier: BSD-3-Clause
- * Copyright(c) 2010-2016 Intel Corporation
+ * Copyright(c) 2010-2018 Intel Corporation
*/
/* Security model
[VHOST_USER_NET_SET_MTU] = "VHOST_USER_NET_SET_MTU",
[VHOST_USER_SET_SLAVE_REQ_FD] = "VHOST_USER_SET_SLAVE_REQ_FD",
[VHOST_USER_IOTLB_MSG] = "VHOST_USER_IOTLB_MSG",
+ [VHOST_USER_CRYPTO_CREATE_SESS] = "VHOST_USER_CRYPTO_CREATE_SESS",
+ [VHOST_USER_CRYPTO_CLOSE_SESS] = "VHOST_USER_CRYPTO_CLOSE_SESS",
};
static uint64_t
static int
vhost_user_reset_owner(struct virtio_net *dev)
{
- if (dev->flags & VIRTIO_DEV_RUNNING) {
- dev->flags &= ~VIRTIO_DEV_RUNNING;
- dev->notify_ops->destroy_device(dev->vid);
- }
+ vhost_destroy_device_notify(dev);
cleanup_device(dev, 0);
reset_device(dev);
return features;
}
+/*
+ * The queue number that we support are requested.
+ */
+static uint32_t
+vhost_user_get_queue_num(struct virtio_net *dev)
+{
+ uint32_t queue_num = 0;
+
+ rte_vhost_driver_get_queue_num(dev->ifname, &queue_num);
+ return queue_num;
+}
+
/*
* We receive the negotiated features supported by us and the virtio device.
*/
vhost_user_set_features(struct virtio_net *dev, uint64_t features)
{
uint64_t vhost_features = 0;
+ struct rte_vdpa_device *vdpa_dev;
+ int did = -1;
rte_vhost_driver_get_features(dev->ifname, &vhost_features);
if (features & ~vhost_features) {
} else {
dev->vhost_hlen = sizeof(struct virtio_net_hdr);
}
- LOG_DEBUG(VHOST_CONFIG,
+ VHOST_LOG_DEBUG(VHOST_CONFIG,
"(%d) mergeable RX buffers %s, virtio 1 %s\n",
dev->vid,
(dev->features & (1 << VIRTIO_NET_F_MRG_RXBUF)) ? "on" : "off",
}
}
+ did = dev->vdpa_dev_id;
+ vdpa_dev = rte_vdpa_get_device(did);
+ if (vdpa_dev && vdpa_dev->ops->set_features)
+ vdpa_dev->ops->set_features(dev->vid);
+
return 0;
}
/* Converts QEMU virtual address to Vhost virtual address. */
static uint64_t
-qva_to_vva(struct virtio_net *dev, uint64_t qva)
+qva_to_vva(struct virtio_net *dev, uint64_t qva, uint64_t *len)
{
- struct rte_vhost_mem_region *reg;
+ struct rte_vhost_mem_region *r;
uint32_t i;
/* Find the region where the address lives. */
for (i = 0; i < dev->mem->nregions; i++) {
- reg = &dev->mem->regions[i];
+ r = &dev->mem->regions[i];
+
+ if (qva >= r->guest_user_addr &&
+ qva < r->guest_user_addr + r->size) {
+
+ if (unlikely(*len > r->guest_user_addr + r->size - qva))
+ *len = r->guest_user_addr + r->size - qva;
- if (qva >= reg->guest_user_addr &&
- qva < reg->guest_user_addr + reg->size) {
- return qva - reg->guest_user_addr +
- reg->host_user_addr;
+ return qva - r->guest_user_addr +
+ r->host_user_addr;
}
}
+ *len = 0;
return 0;
}
*/
static uint64_t
ring_addr_to_vva(struct virtio_net *dev, struct vhost_virtqueue *vq,
- uint64_t ra, uint64_t size)
+ uint64_t ra, uint64_t *size)
{
if (dev->features & (1ULL << VIRTIO_F_IOMMU_PLATFORM)) {
uint64_t vva;
vva = vhost_user_iotlb_cache_find(vq, ra,
- &size, VHOST_ACCESS_RW);
+ size, VHOST_ACCESS_RW);
if (!vva)
vhost_user_iotlb_miss(dev, ra, VHOST_ACCESS_RW);
return vva;
}
- return qva_to_vva(dev, ra);
+ return qva_to_vva(dev, ra, size);
}
static struct virtio_net *
{
struct vhost_virtqueue *vq = dev->virtqueue[vq_index];
struct vhost_vring_addr *addr = &vq->ring_addrs;
+ uint64_t len;
/* The addresses are converted from QEMU virtual to Vhost virtual. */
if (vq->desc && vq->avail && vq->used)
return dev;
+ len = sizeof(struct vring_desc) * vq->size;
vq->desc = (struct vring_desc *)(uintptr_t)ring_addr_to_vva(dev,
- vq, addr->desc_user_addr, sizeof(struct vring_desc));
- if (vq->desc == 0) {
+ vq, addr->desc_user_addr, &len);
+ if (vq->desc == 0 || len != sizeof(struct vring_desc) * vq->size) {
RTE_LOG(DEBUG, VHOST_CONFIG,
- "(%d) failed to find desc ring address.\n",
+ "(%d) failed to map desc ring.\n",
dev->vid);
return dev;
}
vq = dev->virtqueue[vq_index];
addr = &vq->ring_addrs;
+ len = sizeof(struct vring_avail) + sizeof(uint16_t) * vq->size;
vq->avail = (struct vring_avail *)(uintptr_t)ring_addr_to_vva(dev,
- vq, addr->avail_user_addr, sizeof(struct vring_avail));
- if (vq->avail == 0) {
+ vq, addr->avail_user_addr, &len);
+ if (vq->avail == 0 ||
+ len != sizeof(struct vring_avail) +
+ sizeof(uint16_t) * vq->size) {
RTE_LOG(DEBUG, VHOST_CONFIG,
- "(%d) failed to find avail ring address.\n",
+ "(%d) failed to map avail ring.\n",
dev->vid);
return dev;
}
+ len = sizeof(struct vring_used) +
+ sizeof(struct vring_used_elem) * vq->size;
vq->used = (struct vring_used *)(uintptr_t)ring_addr_to_vva(dev,
- vq, addr->used_user_addr, sizeof(struct vring_used));
- if (vq->used == 0) {
+ vq, addr->used_user_addr, &len);
+ if (vq->used == 0 || len != sizeof(struct vring_used) +
+ sizeof(struct vring_used_elem) * vq->size) {
RTE_LOG(DEBUG, VHOST_CONFIG,
- "(%d) failed to find used ring address.\n",
+ "(%d) failed to map used ring.\n",
dev->vid);
return dev;
}
vq->log_guest_addr = addr->log_guest_addr;
- LOG_DEBUG(VHOST_CONFIG, "(%d) mapped address desc: %p\n",
+ VHOST_LOG_DEBUG(VHOST_CONFIG, "(%d) mapped address desc: %p\n",
dev->vid, vq->desc);
- LOG_DEBUG(VHOST_CONFIG, "(%d) mapped address avail: %p\n",
+ VHOST_LOG_DEBUG(VHOST_CONFIG, "(%d) mapped address avail: %p\n",
dev->vid, vq->avail);
- LOG_DEBUG(VHOST_CONFIG, "(%d) mapped address used: %p\n",
+ VHOST_LOG_DEBUG(VHOST_CONFIG, "(%d) mapped address used: %p\n",
dev->vid, vq->used);
- LOG_DEBUG(VHOST_CONFIG, "(%d) log_guest_addr: %" PRIx64 "\n",
+ VHOST_LOG_DEBUG(VHOST_CONFIG, "(%d) log_guest_addr: %" PRIx64 "\n",
dev->vid, vq->log_guest_addr);
return dev;
return 0;
}
-static void
+static int
add_one_guest_page(struct virtio_net *dev, uint64_t guest_phys_addr,
uint64_t host_phys_addr, uint64_t size)
{
dev->max_guest_pages *= 2;
dev->guest_pages = realloc(dev->guest_pages,
dev->max_guest_pages * sizeof(*page));
+ if (!dev->guest_pages) {
+ RTE_LOG(ERR, VHOST_CONFIG, "cannot realloc guest_pages\n");
+ return -1;
+ }
}
if (dev->nr_guest_pages > 0) {
if (host_phys_addr == last_page->host_phys_addr +
last_page->size) {
last_page->size += size;
- return;
+ return 0;
}
}
page->guest_phys_addr = guest_phys_addr;
page->host_phys_addr = host_phys_addr;
page->size = size;
+
+ return 0;
}
-static void
+static int
add_guest_pages(struct virtio_net *dev, struct rte_vhost_mem_region *reg,
uint64_t page_size)
{
size = page_size - (guest_phys_addr & (page_size - 1));
size = RTE_MIN(size, reg_size);
- add_one_guest_page(dev, guest_phys_addr, host_phys_addr, size);
+ if (add_one_guest_page(dev, guest_phys_addr, host_phys_addr, size) < 0)
+ return -1;
+
host_user_addr += size;
guest_phys_addr += size;
reg_size -= size;
size = RTE_MIN(reg_size, page_size);
host_phys_addr = rte_mem_virt2iova((void *)(uintptr_t)
host_user_addr);
- add_one_guest_page(dev, guest_phys_addr, host_phys_addr, size);
+ if (add_one_guest_page(dev, guest_phys_addr, host_phys_addr,
+ size) < 0)
+ return -1;
host_user_addr += size;
guest_phys_addr += size;
reg_size -= size;
}
+
+ return 0;
}
#ifdef RTE_LIBRTE_VHOST_DEBUG
}
static int
-vhost_user_set_mem_table(struct virtio_net *dev, struct VhostUserMsg *pmsg)
+vhost_user_set_mem_table(struct virtio_net **pdev, struct VhostUserMsg *pmsg)
{
+ struct virtio_net *dev = *pdev;
struct VhostUserMemory memory = pmsg->payload.memory;
struct rte_vhost_mem_region *reg;
void *mmap_addr;
uint64_t mmap_offset;
uint64_t alignment;
uint32_t i;
+ int populate;
int fd;
if (memory.nregions > VHOST_MEMORY_MAX_NREGIONS) {
reg->fd = fd;
mmap_offset = memory.regions[i].mmap_offset;
- mmap_size = reg->size + mmap_offset;
+
+ /* Check for memory_size + mmap_offset overflow */
+ if (mmap_offset >= -reg->size) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "mmap_offset (%#"PRIx64") and memory_size "
+ "(%#"PRIx64") overflow\n",
+ mmap_offset, reg->size);
+ goto err_mmap;
+ }
+
+ mmap_size = reg->size + mmap_offset;
/* mmap() without flag of MAP_ANONYMOUS, should be called
* with length argument aligned with hugepagesz at older
}
mmap_size = RTE_ALIGN_CEIL(mmap_size, alignment);
+ populate = (dev->dequeue_zero_copy) ? MAP_POPULATE : 0;
mmap_addr = mmap(NULL, mmap_size, PROT_READ | PROT_WRITE,
- MAP_SHARED | MAP_POPULATE, fd, 0);
+ MAP_SHARED | populate, fd, 0);
if (mmap_addr == MAP_FAILED) {
RTE_LOG(ERR, VHOST_CONFIG,
mmap_offset;
if (dev->dequeue_zero_copy)
- add_guest_pages(dev, reg, alignment);
+ if (add_guest_pages(dev, reg, alignment) < 0) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "adding guest pages to region %u failed.\n",
+ i);
+ goto err_mmap;
+ }
RTE_LOG(INFO, VHOST_CONFIG,
"guest memory region %u, size: 0x%" PRIx64 "\n"
mmap_offset);
}
+ for (i = 0; i < dev->nr_vring; i++) {
+ struct vhost_virtqueue *vq = dev->virtqueue[i];
+
+ if (vq->desc || vq->avail || vq->used) {
+ /*
+ * If the memory table got updated, the ring addresses
+ * need to be translated again as virtual addresses have
+ * changed.
+ */
+ vring_invalidate(dev, vq);
+
+ dev = translate_ring_addresses(dev, i);
+ if (!dev)
+ return -1;
+
+ *pdev = dev;
+ }
+ }
+
dump_guest_pages(dev);
return 0;
struct vhost_virtqueue *vq = dev->virtqueue[msg->payload.state.index];
/* We have to stop the queue (virtio) if it is running. */
- if (dev->flags & VIRTIO_DEV_RUNNING) {
- dev->flags &= ~VIRTIO_DEV_RUNNING;
- dev->notify_ops->destroy_device(dev->vid);
- }
+ vhost_destroy_device_notify(dev);
dev->flags &= ~VIRTIO_DEV_READY;
+ dev->flags &= ~VIRTIO_DEV_VDPA_CONFIGURED;
- /* Here we are safe to get the last used index */
- msg->payload.state.num = vq->last_used_idx;
+ /* Here we are safe to get the last avail index */
+ msg->payload.state.num = vq->last_avail_idx;
RTE_LOG(INFO, VHOST_CONFIG,
"vring base idx:%d file:%d\n", msg->payload.state.index,
vq->kickfd = VIRTIO_UNINITIALIZED_EVENTFD;
+ if (vq->callfd >= 0)
+ close(vq->callfd);
+
+ vq->callfd = VIRTIO_UNINITIALIZED_EVENTFD;
+
if (dev->dequeue_zero_copy)
free_zmbufs(vq);
rte_free(vq->shadow_used_ring);
VhostUserMsg *msg)
{
int enable = (int)msg->payload.state.num;
+ int index = (int)msg->payload.state.index;
+ struct rte_vdpa_device *vdpa_dev;
+ int did = -1;
RTE_LOG(INFO, VHOST_CONFIG,
"set queue enable: %d to qp idx: %d\n",
- enable, msg->payload.state.index);
+ enable, index);
+
+ did = dev->vdpa_dev_id;
+ vdpa_dev = rte_vdpa_get_device(did);
+ if (vdpa_dev && vdpa_dev->ops->set_vring_state)
+ vdpa_dev->ops->set_vring_state(dev->vid, index, enable);
if (dev->notify_ops->vring_state_changed)
dev->notify_ops->vring_state_changed(dev->vid,
- msg->payload.state.index, enable);
+ index, enable);
- dev->virtqueue[msg->payload.state.index]->enabled = enable;
+ dev->virtqueue[index]->enabled = enable;
return 0;
}
vhost_user_get_protocol_features(struct virtio_net *dev,
struct VhostUserMsg *msg)
{
- uint64_t features, protocol_features = VHOST_USER_PROTOCOL_FEATURES;
+ uint64_t features, protocol_features;
rte_vhost_driver_get_features(dev->ifname, &features);
+ rte_vhost_driver_get_protocol_features(dev->ifname, &protocol_features);
/*
* REPLY_ACK protocol feature is only mandatory for now
* mmap from 0 to workaround a hugepage mmap bug: mmap will
* fail when offset is not page size aligned.
*/
- addr = mmap(0, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
+ addr = mmap(0, size + off, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
close(fd);
if (addr == MAP_FAILED) {
RTE_LOG(ERR, VHOST_CONFIG, "mmap log base failed!\n");
vhost_user_send_rarp(struct virtio_net *dev, struct VhostUserMsg *msg)
{
uint8_t *mac = (uint8_t *)&msg->payload.u64;
+ struct rte_vdpa_device *vdpa_dev;
+ int did = -1;
RTE_LOG(DEBUG, VHOST_CONFIG,
":: mac: %02x:%02x:%02x:%02x:%02x:%02x\n",
*/
rte_smp_wmb();
rte_atomic16_set(&dev->broadcast_rarp, 1);
+ did = dev->vdpa_dev_id;
+ vdpa_dev = rte_vdpa_get_device(did);
+ if (vdpa_dev && vdpa_dev->ops->migration_done)
+ vdpa_dev->ops->migration_done(dev->vid);
return 0;
}
struct virtio_net *dev = *pdev;
struct vhost_iotlb_msg *imsg = &msg->payload.iotlb;
uint16_t i;
- uint64_t vva;
+ uint64_t vva, len;
switch (imsg->type) {
case VHOST_IOTLB_UPDATE:
- vva = qva_to_vva(dev, imsg->uaddr);
+ len = imsg->size;
+ vva = qva_to_vva(dev, imsg->uaddr, &len);
if (!vva)
return -1;
struct vhost_virtqueue *vq = dev->virtqueue[i];
vhost_user_iotlb_cache_insert(vq, imsg->iova, vva,
- imsg->size, imsg->perm);
+ len, imsg->perm);
if (is_vring_iotlb_update(vq, imsg))
*pdev = dev = translate_ring_addresses(dev, i);
}
static int
-send_vhost_message(int sockfd, struct VhostUserMsg *msg)
+send_vhost_message(int sockfd, struct VhostUserMsg *msg, int *fds, int fd_num)
{
if (!msg)
return 0;
return send_fd_message(sockfd, (char *)msg,
- VHOST_USER_HDR_SIZE + msg->size, NULL, 0);
+ VHOST_USER_HDR_SIZE + msg->size, fds, fd_num);
}
static int
msg->flags |= VHOST_USER_VERSION;
msg->flags |= VHOST_USER_REPLY_MASK;
- return send_vhost_message(sockfd, msg);
+ return send_vhost_message(sockfd, msg, NULL, 0);
+}
+
+static int
+send_vhost_slave_message(struct virtio_net *dev, struct VhostUserMsg *msg,
+ int *fds, int fd_num)
+{
+ int ret;
+
+ if (msg->flags & VHOST_USER_NEED_REPLY)
+ rte_spinlock_lock(&dev->slave_req_lock);
+
+ ret = send_vhost_message(dev->slave_req_fd, msg, fds, fd_num);
+ if (ret < 0 && (msg->flags & VHOST_USER_NEED_REPLY))
+ rte_spinlock_unlock(&dev->slave_req_lock);
+
+ return ret;
}
/*
{
struct virtio_net *dev;
struct VhostUserMsg msg;
+ struct rte_vdpa_device *vdpa_dev;
+ int did = -1;
int ret;
int unlock_required = 0;
+ uint32_t skip_master = 0;
dev = get_device(vid);
if (dev == NULL)
}
+ if (dev->extern_ops.pre_msg_handle) {
+ uint32_t need_reply;
+
+ ret = (*dev->extern_ops.pre_msg_handle)(dev->vid,
+ (void *)&msg, &need_reply, &skip_master);
+ if (ret < 0)
+ goto skip_to_reply;
+
+ if (need_reply)
+ send_vhost_reply(fd, &msg);
+
+ if (skip_master)
+ goto skip_to_post_handle;
+ }
+
switch (msg.request.master) {
case VHOST_USER_GET_FEATURES:
msg.payload.u64 = vhost_user_get_features(dev);
break;
case VHOST_USER_SET_MEM_TABLE:
- ret = vhost_user_set_mem_table(dev, &msg);
+ ret = vhost_user_set_mem_table(&dev, &msg);
break;
case VHOST_USER_SET_LOG_BASE:
break;
case VHOST_USER_GET_QUEUE_NUM:
- msg.payload.u64 = VHOST_MAX_QUEUE_PAIRS;
+ msg.payload.u64 = (uint64_t)vhost_user_get_queue_num(dev);
msg.size = sizeof(msg.payload.u64);
send_vhost_reply(fd, &msg);
break;
default:
ret = -1;
break;
+ }
+
+skip_to_post_handle:
+ if (dev->extern_ops.post_msg_handle) {
+ uint32_t need_reply;
+ ret = (*dev->extern_ops.post_msg_handle)(
+ dev->vid, (void *)&msg, &need_reply);
+ if (ret < 0)
+ goto skip_to_reply;
+
+ if (need_reply)
+ send_vhost_reply(fd, &msg);
}
+skip_to_reply:
if (unlock_required)
vhost_user_unlock_all_queue_pairs(dev);
}
}
+ did = dev->vdpa_dev_id;
+ vdpa_dev = rte_vdpa_get_device(did);
+ if (vdpa_dev && virtio_is_ready(dev) &&
+ !(dev->flags & VIRTIO_DEV_VDPA_CONFIGURED) &&
+ msg.request.master == VHOST_USER_SET_VRING_ENABLE) {
+ if (vdpa_dev->ops->dev_conf)
+ vdpa_dev->ops->dev_conf(dev->vid);
+ dev->flags |= VIRTIO_DEV_VDPA_CONFIGURED;
+ if (vhost_user_host_notifier_ctrl(dev->vid, true) != 0) {
+ RTE_LOG(INFO, VHOST_CONFIG,
+ "(%d) software relay is used for vDPA, performance may be low.\n",
+ dev->vid);
+ }
+ }
+
return 0;
}
+static int process_slave_message_reply(struct virtio_net *dev,
+ const VhostUserMsg *msg)
+{
+ VhostUserMsg msg_reply;
+ int ret;
+
+ if ((msg->flags & VHOST_USER_NEED_REPLY) == 0)
+ return 0;
+
+ if (read_vhost_message(dev->slave_req_fd, &msg_reply) < 0) {
+ ret = -1;
+ goto out;
+ }
+
+ if (msg_reply.request.slave != msg->request.slave) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "Received unexpected msg type (%u), expected %u\n",
+ msg_reply.request.slave, msg->request.slave);
+ ret = -1;
+ goto out;
+ }
+
+ ret = msg_reply.payload.u64 ? -1 : 0;
+
+out:
+ rte_spinlock_unlock(&dev->slave_req_lock);
+ return ret;
+}
+
int
vhost_user_iotlb_miss(struct virtio_net *dev, uint64_t iova, uint8_t perm)
{
},
};
- ret = send_vhost_message(dev->slave_req_fd, &msg);
+ ret = send_vhost_message(dev->slave_req_fd, &msg, NULL, 0);
if (ret < 0) {
RTE_LOG(ERR, VHOST_CONFIG,
"Failed to send IOTLB miss message (%d)\n",
return 0;
}
+
+static int vhost_user_slave_set_vring_host_notifier(struct virtio_net *dev,
+ int index, int fd,
+ uint64_t offset,
+ uint64_t size)
+{
+ int *fdp = NULL;
+ size_t fd_num = 0;
+ int ret;
+ struct VhostUserMsg msg = {
+ .request.slave = VHOST_USER_SLAVE_VRING_HOST_NOTIFIER_MSG,
+ .flags = VHOST_USER_VERSION | VHOST_USER_NEED_REPLY,
+ .size = sizeof(msg.payload.area),
+ .payload.area = {
+ .u64 = index & VHOST_USER_VRING_IDX_MASK,
+ .size = size,
+ .offset = offset,
+ },
+ };
+
+ if (fd < 0)
+ msg.payload.area.u64 |= VHOST_USER_VRING_NOFD_MASK;
+ else {
+ fdp = &fd;
+ fd_num = 1;
+ }
+
+ ret = send_vhost_slave_message(dev, &msg, fdp, fd_num);
+ if (ret < 0) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "Failed to set host notifier (%d)\n", ret);
+ return ret;
+ }
+
+ return process_slave_message_reply(dev, &msg);
+}
+
+int vhost_user_host_notifier_ctrl(int vid, bool enable)
+{
+ struct virtio_net *dev;
+ struct rte_vdpa_device *vdpa_dev;
+ int vfio_device_fd, did, ret = 0;
+ uint64_t offset, size;
+ unsigned int i;
+
+ dev = get_device(vid);
+ if (!dev)
+ return -ENODEV;
+
+ did = dev->vdpa_dev_id;
+ if (did < 0)
+ return -EINVAL;
+
+ if (!(dev->features & (1ULL << VIRTIO_F_VERSION_1)) ||
+ !(dev->features & (1ULL << VHOST_USER_F_PROTOCOL_FEATURES)) ||
+ !(dev->protocol_features &
+ (1ULL << VHOST_USER_PROTOCOL_F_SLAVE_REQ)) ||
+ !(dev->protocol_features &
+ (1ULL << VHOST_USER_PROTOCOL_F_SLAVE_SEND_FD)) ||
+ !(dev->protocol_features &
+ (1ULL << VHOST_USER_PROTOCOL_F_HOST_NOTIFIER)))
+ return -ENOTSUP;
+
+ vdpa_dev = rte_vdpa_get_device(did);
+
+ RTE_FUNC_PTR_OR_ERR_RET(vdpa_dev->ops->get_vfio_device_fd, -ENOTSUP);
+ RTE_FUNC_PTR_OR_ERR_RET(vdpa_dev->ops->get_notify_area, -ENOTSUP);
+
+ vfio_device_fd = vdpa_dev->ops->get_vfio_device_fd(vid);
+ if (vfio_device_fd < 0)
+ return -ENOTSUP;
+
+ if (enable) {
+ for (i = 0; i < dev->nr_vring; i++) {
+ if (vdpa_dev->ops->get_notify_area(vid, i, &offset,
+ &size) < 0) {
+ ret = -ENOTSUP;
+ goto disable;
+ }
+
+ if (vhost_user_slave_set_vring_host_notifier(dev, i,
+ vfio_device_fd, offset, size) < 0) {
+ ret = -EFAULT;
+ goto disable;
+ }
+ }
+ } else {
+disable:
+ for (i = 0; i < dev->nr_vring; i++) {
+ vhost_user_slave_set_vring_host_notifier(dev, i, -1,
+ 0, 0);
+ }
+ }
+
+ return ret;
+}
git.droids-corp.org / dpdk.git / blobdiff