/* SPDX-License-Identifier: BSD-3-Clause
- * Copyright(c) 2010-2016 Intel Corporation
+ * Copyright(c) 2010-2018 Intel Corporation
*/
/* Security model
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <sys/stat.h>
+#include <sys/syscall.h>
#include <assert.h>
#ifdef RTE_LIBRTE_VHOST_NUMA
#include <numaif.h>
#endif
+#ifdef RTE_LIBRTE_VHOST_POSTCOPY
+#include <linux/userfaultfd.h>
+#endif
+#ifdef F_ADD_SEALS /* if file sealing is supported, so is memfd */
+#include <linux/memfd.h>
+#define MEMFD_SUPPORTED
+#endif
#include <rte_common.h>
#include <rte_malloc.h>
#define VIRTIO_MIN_MTU 68
#define VIRTIO_MAX_MTU 65535
+#define INFLIGHT_ALIGNMENT 64
+#define INFLIGHT_VERSION 0x1
+
static const char *vhost_message_str[VHOST_USER_MAX] = {
[VHOST_USER_NONE] = "VHOST_USER_NONE",
[VHOST_USER_GET_FEATURES] = "VHOST_USER_GET_FEATURES",
[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",
+ [VHOST_USER_POSTCOPY_ADVISE] = "VHOST_USER_POSTCOPY_ADVISE",
+ [VHOST_USER_POSTCOPY_LISTEN] = "VHOST_USER_POSTCOPY_LISTEN",
+ [VHOST_USER_POSTCOPY_END] = "VHOST_USER_POSTCOPY_END",
+ [VHOST_USER_GET_INFLIGHT_FD] = "VHOST_USER_GET_INFLIGHT_FD",
+ [VHOST_USER_SET_INFLIGHT_FD] = "VHOST_USER_SET_INFLIGHT_FD",
};
+static int send_vhost_reply(int sockfd, struct VhostUserMsg *msg);
+static int read_vhost_message(int sockfd, struct VhostUserMsg *msg);
+
static uint64_t
get_blk_size(int fd)
{
return ret == -1 ? (uint64_t)-1 : (uint64_t)stat.st_blksize;
}
+/*
+ * Reclaim all the outstanding zmbufs for a virtqueue.
+ */
+static void
+drain_zmbuf_list(struct vhost_virtqueue *vq)
+{
+ struct zcopy_mbuf *zmbuf, *next;
+
+ for (zmbuf = TAILQ_FIRST(&vq->zmbuf_list);
+ zmbuf != NULL; zmbuf = next) {
+ next = TAILQ_NEXT(zmbuf, next);
+
+ while (!mbuf_is_consumed(zmbuf->mbuf))
+ usleep(1000);
+
+ TAILQ_REMOVE(&vq->zmbuf_list, zmbuf, next);
+ restore_mbuf(zmbuf->mbuf);
+ rte_pktmbuf_free(zmbuf->mbuf);
+ put_zmbuf(zmbuf);
+ vq->nr_zmbuf -= 1;
+ }
+}
+
static void
free_mem_region(struct virtio_net *dev)
{
uint32_t i;
struct rte_vhost_mem_region *reg;
+ struct vhost_virtqueue *vq;
if (!dev || !dev->mem)
return;
+ if (dev->dequeue_zero_copy) {
+ for (i = 0; i < dev->nr_vring; i++) {
+ vq = dev->virtqueue[i];
+ if (vq)
+ drain_zmbuf_list(vq);
+ }
+ }
+
for (i = 0; i < dev->mem->nregions; i++) {
reg = &dev->mem->regions[i];
if (reg->host_user_addr) {
dev->log_addr = 0;
}
+ if (dev->inflight_info) {
+ if (dev->inflight_info->addr) {
+ munmap(dev->inflight_info->addr,
+ dev->inflight_info->size);
+ dev->inflight_info->addr = NULL;
+ }
+
+ if (dev->inflight_info->fd > 0) {
+ close(dev->inflight_info->fd);
+ dev->inflight_info->fd = -1;
+ }
+
+ free(dev->inflight_info);
+ dev->inflight_info = NULL;
+ }
+
if (dev->slave_req_fd >= 0) {
close(dev->slave_req_fd);
dev->slave_req_fd = -1;
}
+
+ if (dev->postcopy_ufd >= 0) {
+ close(dev->postcopy_ufd);
+ dev->postcopy_ufd = -1;
+ }
+
+ dev->postcopy_listening = 0;
}
/*
* the device hasn't been initialised.
*/
static int
-vhost_user_set_owner(void)
+vhost_user_set_owner(struct virtio_net **pdev __rte_unused,
+ struct VhostUserMsg *msg __rte_unused,
+ int main_fd __rte_unused)
{
- return 0;
+ return RTE_VHOST_MSG_RESULT_OK;
}
static int
-vhost_user_reset_owner(struct virtio_net *dev)
+vhost_user_reset_owner(struct virtio_net **pdev,
+ struct VhostUserMsg *msg __rte_unused,
+ int main_fd __rte_unused)
{
- if (dev->flags & VIRTIO_DEV_RUNNING) {
- dev->flags &= ~VIRTIO_DEV_RUNNING;
- dev->notify_ops->destroy_device(dev->vid);
- }
+ struct virtio_net *dev = *pdev;
+ vhost_destroy_device_notify(dev);
cleanup_device(dev, 0);
reset_device(dev);
- return 0;
+ return RTE_VHOST_MSG_RESULT_OK;
}
/*
* The features that we support are requested.
*/
-static uint64_t
-vhost_user_get_features(struct virtio_net *dev)
+static int
+vhost_user_get_features(struct virtio_net **pdev, struct VhostUserMsg *msg,
+ int main_fd __rte_unused)
{
+ struct virtio_net *dev = *pdev;
uint64_t features = 0;
rte_vhost_driver_get_features(dev->ifname, &features);
- return features;
+
+ msg->payload.u64 = features;
+ msg->size = sizeof(msg->payload.u64);
+ msg->fd_num = 0;
+
+ return RTE_VHOST_MSG_RESULT_REPLY;
+}
+
+/*
+ * The queue number that we support are requested.
+ */
+static int
+vhost_user_get_queue_num(struct virtio_net **pdev, struct VhostUserMsg *msg,
+ int main_fd __rte_unused)
+{
+ struct virtio_net *dev = *pdev;
+ uint32_t queue_num = 0;
+
+ rte_vhost_driver_get_queue_num(dev->ifname, &queue_num);
+
+ msg->payload.u64 = (uint64_t)queue_num;
+ msg->size = sizeof(msg->payload.u64);
+ msg->fd_num = 0;
+
+ return RTE_VHOST_MSG_RESULT_REPLY;
}
/*
* We receive the negotiated features supported by us and the virtio device.
*/
static int
-vhost_user_set_features(struct virtio_net *dev, uint64_t features)
+vhost_user_set_features(struct virtio_net **pdev, struct VhostUserMsg *msg,
+ int main_fd __rte_unused)
{
+ struct virtio_net *dev = *pdev;
+ uint64_t features = msg->payload.u64;
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) {
RTE_LOG(ERR, VHOST_CONFIG,
"(%d) received invalid negotiated features.\n",
dev->vid);
- return -1;
+ return RTE_VHOST_MSG_RESULT_ERR;
}
if (dev->flags & VIRTIO_DEV_RUNNING) {
if (dev->features == features)
- return 0;
+ return RTE_VHOST_MSG_RESULT_OK;
/*
* Error out if master tries to change features while device is
RTE_LOG(ERR, VHOST_CONFIG,
"(%d) features changed while device is running.\n",
dev->vid);
- return -1;
+ return RTE_VHOST_MSG_RESULT_ERR;
}
if (dev->notify_ops->features_changed)
} else {
dev->vhost_hlen = sizeof(struct virtio_net_hdr);
}
+ RTE_LOG(INFO, VHOST_CONFIG,
+ "negotiated Virtio features: 0x%" PRIx64 "\n", dev->features);
VHOST_LOG_DEBUG(VHOST_CONFIG,
"(%d) mergeable RX buffers %s, virtio 1 %s\n",
dev->vid,
dev->virtqueue[dev->nr_vring] = NULL;
cleanup_vq(vq, 1);
- free_vq(vq);
+ cleanup_vq_inflight(dev, vq);
+ free_vq(dev, vq);
}
}
- return 0;
+ 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 RTE_VHOST_MSG_RESULT_OK;
}
/*
* The virtio device sends us the size of the descriptor ring.
*/
static int
-vhost_user_set_vring_num(struct virtio_net *dev,
- VhostUserMsg *msg)
+vhost_user_set_vring_num(struct virtio_net **pdev,
+ struct VhostUserMsg *msg,
+ int main_fd __rte_unused)
{
+ struct virtio_net *dev = *pdev;
struct vhost_virtqueue *vq = dev->virtqueue[msg->payload.state.index];
vq->size = msg->payload.state.num;
if ((vq->size & (vq->size - 1)) || vq->size > 32768) {
RTE_LOG(ERR, VHOST_CONFIG,
"invalid virtqueue size %u\n", vq->size);
- return -1;
+ return RTE_VHOST_MSG_RESULT_ERR;
}
if (dev->dequeue_zero_copy) {
TAILQ_INIT(&vq->zmbuf_list);
}
- vq->shadow_used_ring = rte_malloc(NULL,
+ if (vq_is_packed(dev)) {
+ vq->shadow_used_packed = rte_malloc(NULL,
+ vq->size *
+ sizeof(struct vring_used_elem_packed),
+ RTE_CACHE_LINE_SIZE);
+ if (!vq->shadow_used_packed) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "failed to allocate memory for shadow used ring.\n");
+ return RTE_VHOST_MSG_RESULT_ERR;
+ }
+
+ } else {
+ vq->shadow_used_split = rte_malloc(NULL,
vq->size * sizeof(struct vring_used_elem),
RTE_CACHE_LINE_SIZE);
- if (!vq->shadow_used_ring) {
- RTE_LOG(ERR, VHOST_CONFIG,
- "failed to allocate memory for shadow used ring.\n");
- return -1;
+ if (!vq->shadow_used_split) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "failed to allocate memory for shadow used ring.\n");
+ return RTE_VHOST_MSG_RESULT_ERR;
+ }
}
vq->batch_copy_elems = rte_malloc(NULL,
if (!vq->batch_copy_elems) {
RTE_LOG(ERR, VHOST_CONFIG,
"failed to allocate memory for batching copy.\n");
- return -1;
+ return RTE_VHOST_MSG_RESULT_ERR;
}
- return 0;
+ return RTE_VHOST_MSG_RESULT_OK;
}
/*
struct virtio_net *old_dev;
struct vhost_virtqueue *old_vq, *vq;
struct zcopy_mbuf *new_zmbuf;
- struct vring_used_elem *new_shadow_used_ring;
+ struct vring_used_elem *new_shadow_used_split;
+ struct vring_used_elem_packed *new_shadow_used_packed;
struct batch_copy_elem *new_batch_copy_elems;
int ret;
+ if (dev->flags & VIRTIO_DEV_RUNNING)
+ return dev;
+
old_dev = dev;
vq = old_vq = dev->virtqueue[index];
memcpy(vq, old_vq, sizeof(*vq));
TAILQ_INIT(&vq->zmbuf_list);
- new_zmbuf = rte_malloc_socket(NULL, vq->zmbuf_size *
- sizeof(struct zcopy_mbuf), 0, newnode);
- if (new_zmbuf) {
- rte_free(vq->zmbufs);
- vq->zmbufs = new_zmbuf;
+ if (dev->dequeue_zero_copy) {
+ new_zmbuf = rte_malloc_socket(NULL, vq->zmbuf_size *
+ sizeof(struct zcopy_mbuf), 0, newnode);
+ if (new_zmbuf) {
+ rte_free(vq->zmbufs);
+ vq->zmbufs = new_zmbuf;
+ }
}
- new_shadow_used_ring = rte_malloc_socket(NULL,
- vq->size * sizeof(struct vring_used_elem),
- RTE_CACHE_LINE_SIZE,
- newnode);
- if (new_shadow_used_ring) {
- rte_free(vq->shadow_used_ring);
- vq->shadow_used_ring = new_shadow_used_ring;
+ if (vq_is_packed(dev)) {
+ new_shadow_used_packed = rte_malloc_socket(NULL,
+ vq->size *
+ sizeof(struct vring_used_elem_packed),
+ RTE_CACHE_LINE_SIZE,
+ newnode);
+ if (new_shadow_used_packed) {
+ rte_free(vq->shadow_used_packed);
+ vq->shadow_used_packed = new_shadow_used_packed;
+ }
+ } else {
+ new_shadow_used_split = rte_malloc_socket(NULL,
+ vq->size *
+ sizeof(struct vring_used_elem),
+ RTE_CACHE_LINE_SIZE,
+ newnode);
+ if (new_shadow_used_split) {
+ rte_free(vq->shadow_used_split);
+ vq->shadow_used_split = new_shadow_used_split;
+ }
}
new_batch_copy_elems = rte_malloc_socket(NULL,
/* 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;
+ if (unlikely(!dev || !dev->mem))
+ goto out_error;
+
/* 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 (qva >= reg->guest_user_addr &&
- qva < reg->guest_user_addr + reg->size) {
- return qva - reg->guest_user_addr +
- reg->host_user_addr;
+ if (unlikely(*len > r->guest_user_addr + r->size - qva))
+ *len = r->guest_user_addr + r->size - qva;
+
+ return qva - r->guest_user_addr +
+ r->host_user_addr;
}
}
+out_error:
+ *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;
+ uint64_t req_size = *size;
vva = vhost_user_iotlb_cache_find(vq, ra,
- &size, VHOST_ACCESS_RW);
- if (!vva)
- vhost_user_iotlb_miss(dev, ra, VHOST_ACCESS_RW);
+ size, VHOST_ACCESS_RW);
+ if (req_size != *size)
+ vhost_user_iotlb_miss(dev, (ra + *size),
+ VHOST_ACCESS_RW);
return vva;
}
- return qva_to_vva(dev, ra);
+ return qva_to_vva(dev, ra, size);
+}
+
+/*
+ * Converts vring log address to GPA
+ * If IOMMU is enabled, the log address is IOVA
+ * If IOMMU not enabled, the log address is already GPA
+ */
+static uint64_t
+translate_log_addr(struct virtio_net *dev, struct vhost_virtqueue *vq,
+ uint64_t log_addr)
+{
+ if (dev->features & (1ULL << VIRTIO_F_IOMMU_PLATFORM)) {
+ const uint64_t exp_size = sizeof(struct vring_used) +
+ sizeof(struct vring_used_elem) * vq->size;
+ uint64_t hva, gpa;
+ uint64_t size = exp_size;
+
+ hva = vhost_iova_to_vva(dev, vq, log_addr,
+ &size, VHOST_ACCESS_RW);
+ if (size != exp_size)
+ return 0;
+
+ gpa = hva_to_gpa(dev, hva, exp_size);
+ if (!gpa) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "VQ: Failed to find GPA for log_addr: 0x%" PRIx64 " hva: 0x%" PRIx64 "\n",
+ log_addr, hva);
+ return 0;
+ }
+ return gpa;
+
+ } else
+ return log_addr;
}
static struct virtio_net *
{
struct vhost_virtqueue *vq = dev->virtqueue[vq_index];
struct vhost_vring_addr *addr = &vq->ring_addrs;
+ uint64_t len, expected_len;
+
+ if (vq_is_packed(dev)) {
+ len = sizeof(struct vring_packed_desc) * vq->size;
+ vq->desc_packed = (struct vring_packed_desc *)(uintptr_t)
+ ring_addr_to_vva(dev, vq, addr->desc_user_addr, &len);
+ vq->log_guest_addr = 0;
+ if (vq->desc_packed == NULL ||
+ len != sizeof(struct vring_packed_desc) *
+ vq->size) {
+ RTE_LOG(DEBUG, VHOST_CONFIG,
+ "(%d) failed to map desc_packed ring.\n",
+ dev->vid);
+ return dev;
+ }
+
+ dev = numa_realloc(dev, vq_index);
+ vq = dev->virtqueue[vq_index];
+ addr = &vq->ring_addrs;
+
+ len = sizeof(struct vring_packed_desc_event);
+ vq->driver_event = (struct vring_packed_desc_event *)
+ (uintptr_t)ring_addr_to_vva(dev,
+ vq, addr->avail_user_addr, &len);
+ if (vq->driver_event == NULL ||
+ len != sizeof(struct vring_packed_desc_event)) {
+ RTE_LOG(DEBUG, VHOST_CONFIG,
+ "(%d) failed to find driver area address.\n",
+ dev->vid);
+ return dev;
+ }
+
+ len = sizeof(struct vring_packed_desc_event);
+ vq->device_event = (struct vring_packed_desc_event *)
+ (uintptr_t)ring_addr_to_vva(dev,
+ vq, addr->used_user_addr, &len);
+ if (vq->device_event == NULL ||
+ len != sizeof(struct vring_packed_desc_event)) {
+ RTE_LOG(DEBUG, VHOST_CONFIG,
+ "(%d) failed to find device area address.\n",
+ dev->vid);
+ return dev;
+ }
+
+ vq->access_ok = 1;
+ return dev;
+ }
/* 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;
+ if (dev->features & (1ULL << VIRTIO_RING_F_EVENT_IDX))
+ len += sizeof(uint16_t);
+ expected_len = len;
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 != expected_len) {
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;
+ if (dev->features & (1ULL << VIRTIO_RING_F_EVENT_IDX))
+ len += sizeof(uint16_t);
+ expected_len = len;
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 != expected_len) {
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->last_avail_idx = vq->used->idx;
}
- vq->log_guest_addr = addr->log_guest_addr;
+ vq->log_guest_addr =
+ translate_log_addr(dev, vq, addr->log_guest_addr);
+ if (vq->log_guest_addr == 0) {
+ RTE_LOG(DEBUG, VHOST_CONFIG,
+ "(%d) failed to map log_guest_addr .\n",
+ dev->vid);
+ return dev;
+ }
+ vq->access_ok = 1;
VHOST_LOG_DEBUG(VHOST_CONFIG, "(%d) mapped address desc: %p\n",
dev->vid, vq->desc);
* This function then converts these to our address space.
*/
static int
-vhost_user_set_vring_addr(struct virtio_net **pdev, VhostUserMsg *msg)
+vhost_user_set_vring_addr(struct virtio_net **pdev, struct VhostUserMsg *msg,
+ int main_fd __rte_unused)
{
+ struct virtio_net *dev = *pdev;
struct vhost_virtqueue *vq;
struct vhost_vring_addr *addr = &msg->payload.addr;
- struct virtio_net *dev = *pdev;
+ bool access_ok;
if (dev->mem == NULL)
- return -1;
+ return RTE_VHOST_MSG_RESULT_ERR;
/* addr->index refers to the queue index. The txq 1, rxq is 0. */
vq = dev->virtqueue[msg->payload.addr.index];
+ access_ok = vq->access_ok;
+
/*
* Rings addresses should not be interpreted as long as the ring is not
* started and enabled
vring_invalidate(dev, vq);
- if (vq->enabled && (dev->features &
- (1ULL << VHOST_USER_F_PROTOCOL_FEATURES))) {
+ if ((vq->enabled && (dev->features &
+ (1ULL << VHOST_USER_F_PROTOCOL_FEATURES))) ||
+ access_ok) {
dev = translate_ring_addresses(dev, msg->payload.addr.index);
if (!dev)
- return -1;
+ return RTE_VHOST_MSG_RESULT_ERR;
*pdev = dev;
}
- return 0;
+ return RTE_VHOST_MSG_RESULT_OK;
}
/*
* The virtio device sends us the available ring last used index.
*/
static int
-vhost_user_set_vring_base(struct virtio_net *dev,
- VhostUserMsg *msg)
+vhost_user_set_vring_base(struct virtio_net **pdev,
+ struct VhostUserMsg *msg,
+ int main_fd __rte_unused)
{
- dev->virtqueue[msg->payload.state.index]->last_used_idx =
- msg->payload.state.num;
- dev->virtqueue[msg->payload.state.index]->last_avail_idx =
- msg->payload.state.num;
+ struct virtio_net *dev = *pdev;
+ struct vhost_virtqueue *vq = dev->virtqueue[msg->payload.state.index];
+ uint64_t val = msg->payload.state.num;
- return 0;
+ if (vq_is_packed(dev)) {
+ /*
+ * Bit[0:14]: avail index
+ * Bit[15]: avail wrap counter
+ */
+ vq->last_avail_idx = val & 0x7fff;
+ vq->avail_wrap_counter = !!(val & (0x1 << 15));
+ /*
+ * Set used index to same value as available one, as
+ * their values should be the same since ring processing
+ * was stopped at get time.
+ */
+ vq->last_used_idx = vq->last_avail_idx;
+ vq->used_wrap_counter = vq->avail_wrap_counter;
+ } else {
+ vq->last_used_idx = msg->payload.state.num;
+ vq->last_avail_idx = msg->payload.state.num;
+ }
+
+ return RTE_VHOST_MSG_RESULT_OK;
}
static int
uint64_t host_phys_addr, uint64_t size)
{
struct guest_page *page, *last_page;
+ struct guest_page *old_pages;
if (dev->nr_guest_pages == dev->max_guest_pages) {
dev->max_guest_pages *= 2;
+ old_pages = dev->guest_pages;
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");
+ free(old_pages);
return -1;
}
}
}
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 *msg,
+ int main_fd)
{
- struct VhostUserMemory memory = pmsg->payload.memory;
+ struct virtio_net *dev = *pdev;
+ struct VhostUserMemory *memory = &msg->payload.memory;
struct rte_vhost_mem_region *reg;
void *mmap_addr;
uint64_t mmap_size;
int populate;
int fd;
- if (memory.nregions > VHOST_MEMORY_MAX_NREGIONS) {
+ if (memory->nregions > VHOST_MEMORY_MAX_NREGIONS) {
RTE_LOG(ERR, VHOST_CONFIG,
- "too many memory regions (%u)\n", memory.nregions);
- return -1;
+ "too many memory regions (%u)\n", memory->nregions);
+ return RTE_VHOST_MSG_RESULT_ERR;
}
- if (dev->mem && !vhost_memory_changed(&memory, dev->mem)) {
+ if (dev->mem && !vhost_memory_changed(memory, dev->mem)) {
RTE_LOG(INFO, VHOST_CONFIG,
"(%d) memory regions not changed\n", dev->vid);
- for (i = 0; i < memory.nregions; i++)
- close(pmsg->fds[i]);
+ for (i = 0; i < memory->nregions; i++)
+ close(msg->fds[i]);
- return 0;
+ return RTE_VHOST_MSG_RESULT_OK;
}
if (dev->mem) {
dev->mem = NULL;
}
+ /* Flush IOTLB cache as previous HVAs are now invalid */
+ if (dev->features & (1ULL << VIRTIO_F_IOMMU_PLATFORM))
+ for (i = 0; i < dev->nr_vring; i++)
+ vhost_user_iotlb_flush_all(dev->virtqueue[i]);
+
dev->nr_guest_pages = 0;
if (!dev->guest_pages) {
dev->max_guest_pages = 8;
"(%d) failed to allocate memory "
"for dev->guest_pages\n",
dev->vid);
- return -1;
+ return RTE_VHOST_MSG_RESULT_ERR;
}
}
dev->mem = rte_zmalloc("vhost-mem-table", sizeof(struct rte_vhost_memory) +
- sizeof(struct rte_vhost_mem_region) * memory.nregions, 0);
+ sizeof(struct rte_vhost_mem_region) * memory->nregions, 0);
if (dev->mem == NULL) {
RTE_LOG(ERR, VHOST_CONFIG,
"(%d) failed to allocate memory for dev->mem\n",
dev->vid);
- return -1;
+ return RTE_VHOST_MSG_RESULT_ERR;
}
- dev->mem->nregions = memory.nregions;
+ dev->mem->nregions = memory->nregions;
- for (i = 0; i < memory.nregions; i++) {
- fd = pmsg->fds[i];
+ for (i = 0; i < memory->nregions; i++) {
+ fd = msg->fds[i];
reg = &dev->mem->regions[i];
- reg->guest_phys_addr = memory.regions[i].guest_phys_addr;
- reg->guest_user_addr = memory.regions[i].userspace_addr;
- reg->size = memory.regions[i].memory_size;
+ reg->guest_phys_addr = memory->regions[i].guest_phys_addr;
+ reg->guest_user_addr = memory->regions[i].userspace_addr;
+ reg->size = memory->regions[i].memory_size;
reg->fd = fd;
- mmap_offset = memory.regions[i].mmap_offset;
+ mmap_offset = memory->regions[i].mmap_offset;
/* Check for memory_size + mmap_offset overflow */
if (mmap_offset >= -reg->size) {
mmap_size,
alignment,
mmap_offset);
+
+ if (dev->postcopy_listening) {
+ /*
+ * We haven't a better way right now than sharing
+ * DPDK's virtual address with Qemu, so that Qemu can
+ * retrieve the region offset when handling userfaults.
+ */
+ memory->regions[i].userspace_addr =
+ reg->host_user_addr;
+ }
+ }
+ if (dev->postcopy_listening) {
+ /* Send the addresses back to qemu */
+ msg->fd_num = 0;
+ send_vhost_reply(main_fd, msg);
+
+ /* Wait for qemu to acknolwedge it's got the addresses
+ * we've got to wait before we're allowed to generate faults.
+ */
+ VhostUserMsg ack_msg;
+ if (read_vhost_message(main_fd, &ack_msg) <= 0) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "Failed to read qemu ack on postcopy set-mem-table\n");
+ goto err_mmap;
+ }
+ if (ack_msg.request.master != VHOST_USER_SET_MEM_TABLE) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "Bad qemu ack on postcopy set-mem-table (%d)\n",
+ ack_msg.request.master);
+ goto err_mmap;
+ }
+
+ /* Now userfault register and we can use the memory */
+ for (i = 0; i < memory->nregions; i++) {
+#ifdef RTE_LIBRTE_VHOST_POSTCOPY
+ reg = &dev->mem->regions[i];
+ struct uffdio_register reg_struct;
+
+ /*
+ * Let's register all the mmap'ed area to ensure
+ * alignment on page boundary.
+ */
+ reg_struct.range.start =
+ (uint64_t)(uintptr_t)reg->mmap_addr;
+ reg_struct.range.len = reg->mmap_size;
+ reg_struct.mode = UFFDIO_REGISTER_MODE_MISSING;
+
+ if (ioctl(dev->postcopy_ufd, UFFDIO_REGISTER,
+ ®_struct)) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "Failed to register ufd for region %d: (ufd = %d) %s\n",
+ i, dev->postcopy_ufd,
+ strerror(errno));
+ goto err_mmap;
+ }
+ RTE_LOG(INFO, VHOST_CONFIG,
+ "\t userfaultfd registered for range : "
+ "%" PRIx64 " - %" PRIx64 "\n",
+ (uint64_t)reg_struct.range.start,
+ (uint64_t)reg_struct.range.start +
+ (uint64_t)reg_struct.range.len - 1);
+#else
+ goto err_mmap;
+#endif
+ }
+ }
+
+ 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) {
+ dev = *pdev;
+ goto err_mmap;
+ }
+
+ *pdev = dev;
+ }
}
dump_guest_pages(dev);
- return 0;
+ return RTE_VHOST_MSG_RESULT_OK;
err_mmap:
free_mem_region(dev);
rte_free(dev->mem);
dev->mem = NULL;
- return -1;
+ return RTE_VHOST_MSG_RESULT_ERR;
}
-static int
-vq_is_ready(struct vhost_virtqueue *vq)
+static bool
+vq_is_ready(struct virtio_net *dev, struct vhost_virtqueue *vq)
{
- return vq && vq->desc && vq->avail && vq->used &&
+ bool rings_ok;
+
+ if (!vq)
+ return false;
+
+ if (vq_is_packed(dev))
+ rings_ok = !!vq->desc_packed;
+ else
+ rings_ok = vq->desc && vq->avail && vq->used;
+
+ return rings_ok &&
vq->kickfd != VIRTIO_UNINITIALIZED_EVENTFD &&
vq->callfd != VIRTIO_UNINITIALIZED_EVENTFD;
}
for (i = 0; i < dev->nr_vring; i++) {
vq = dev->virtqueue[i];
- if (!vq_is_ready(vq))
+ if (!vq_is_ready(dev, vq))
return 0;
}
return 1;
}
-static void
-vhost_user_set_vring_call(struct virtio_net *dev, struct VhostUserMsg *pmsg)
-{
- struct vhost_vring_file file;
- struct vhost_virtqueue *vq;
-
- file.index = pmsg->payload.u64 & VHOST_USER_VRING_IDX_MASK;
- if (pmsg->payload.u64 & VHOST_USER_VRING_NOFD_MASK)
- file.fd = VIRTIO_INVALID_EVENTFD;
- else
- file.fd = pmsg->fds[0];
- RTE_LOG(INFO, VHOST_CONFIG,
- "vring call idx:%d file:%d\n", file.index, file.fd);
-
- vq = dev->virtqueue[file.index];
- if (vq->callfd >= 0)
- close(vq->callfd);
-
- vq->callfd = file.fd;
-}
-
-static void
-vhost_user_set_vring_kick(struct virtio_net **pdev, struct VhostUserMsg *pmsg)
+static void *
+inflight_mem_alloc(const char *name, size_t size, int *fd)
{
- struct vhost_vring_file file;
- struct vhost_virtqueue *vq;
- struct virtio_net *dev = *pdev;
-
- file.index = pmsg->payload.u64 & VHOST_USER_VRING_IDX_MASK;
- if (pmsg->payload.u64 & VHOST_USER_VRING_NOFD_MASK)
- file.fd = VIRTIO_INVALID_EVENTFD;
- else
- file.fd = pmsg->fds[0];
- RTE_LOG(INFO, VHOST_CONFIG,
- "vring kick idx:%d file:%d\n", file.index, file.fd);
+ void *ptr;
+ int mfd = -1;
+ char fname[20] = "/tmp/memfd-XXXXXX";
- /* Interpret ring addresses only when ring is started. */
- dev = translate_ring_addresses(dev, file.index);
- if (!dev)
- return;
+ *fd = -1;
+#ifdef MEMFD_SUPPORTED
+ mfd = memfd_create(name, MFD_CLOEXEC);
+#else
+ RTE_SET_USED(name);
+#endif
+ if (mfd == -1) {
+ mfd = mkstemp(fname);
+ if (mfd == -1) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "failed to get inflight buffer fd\n");
+ return NULL;
+ }
- *pdev = dev;
+ unlink(fname);
+ }
- vq = dev->virtqueue[file.index];
+ if (ftruncate(mfd, size) == -1) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "failed to alloc inflight buffer\n");
+ close(mfd);
+ return NULL;
+ }
- /*
- * When VHOST_USER_F_PROTOCOL_FEATURES is not negotiated,
- * the ring starts already enabled. Otherwise, it is enabled via
- * the SET_VRING_ENABLE message.
- */
- if (!(dev->features & (1ULL << VHOST_USER_F_PROTOCOL_FEATURES)))
- vq->enabled = 1;
+ ptr = mmap(0, size, PROT_READ | PROT_WRITE, MAP_SHARED, mfd, 0);
+ if (ptr == MAP_FAILED) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "failed to mmap inflight buffer\n");
+ close(mfd);
+ return NULL;
+ }
- if (vq->kickfd >= 0)
- close(vq->kickfd);
- vq->kickfd = file.fd;
+ *fd = mfd;
+ return ptr;
}
-static void
-free_zmbufs(struct vhost_virtqueue *vq)
+static uint32_t
+get_pervq_shm_size_split(uint16_t queue_size)
{
- struct zcopy_mbuf *zmbuf, *next;
-
- for (zmbuf = TAILQ_FIRST(&vq->zmbuf_list);
- zmbuf != NULL; zmbuf = next) {
- next = TAILQ_NEXT(zmbuf, next);
-
- rte_pktmbuf_free(zmbuf->mbuf);
- TAILQ_REMOVE(&vq->zmbuf_list, zmbuf, next);
- }
+ return RTE_ALIGN_MUL_CEIL(sizeof(struct rte_vhost_inflight_desc_split) *
+ queue_size + sizeof(uint64_t) +
+ sizeof(uint16_t) * 4, INFLIGHT_ALIGNMENT);
+}
- rte_free(vq->zmbufs);
+static uint32_t
+get_pervq_shm_size_packed(uint16_t queue_size)
+{
+ return RTE_ALIGN_MUL_CEIL(sizeof(struct rte_vhost_inflight_desc_packed)
+ * queue_size + sizeof(uint64_t) +
+ sizeof(uint16_t) * 6 + sizeof(uint8_t) * 9,
+ INFLIGHT_ALIGNMENT);
}
-/*
- * when virtio is stopped, qemu will send us the GET_VRING_BASE message.
- */
static int
-vhost_user_get_vring_base(struct virtio_net *dev,
- VhostUserMsg *msg)
+vhost_user_get_inflight_fd(struct virtio_net **pdev,
+ VhostUserMsg *msg,
+ int main_fd __rte_unused)
{
- struct vhost_virtqueue *vq = dev->virtqueue[msg->payload.state.index];
+ struct rte_vhost_inflight_info_packed *inflight_packed;
+ uint64_t pervq_inflight_size, mmap_size;
+ uint16_t num_queues, queue_size;
+ struct virtio_net *dev = *pdev;
+ int fd, i, j;
+ void *addr;
- /* 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);
+ if (msg->size != sizeof(msg->payload.inflight)) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "invalid get_inflight_fd message size is %d\n",
+ msg->size);
+ return RTE_VHOST_MSG_RESULT_ERR;
}
+ if (dev->inflight_info == NULL) {
+ dev->inflight_info = calloc(1,
+ sizeof(struct inflight_mem_info));
+ if (!dev->inflight_info) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "failed to alloc dev inflight area\n");
+ return RTE_VHOST_MSG_RESULT_ERR;
+ }
+ }
+
+ num_queues = msg->payload.inflight.num_queues;
+ queue_size = msg->payload.inflight.queue_size;
+
+ RTE_LOG(INFO, VHOST_CONFIG, "get_inflight_fd num_queues: %u\n",
+ msg->payload.inflight.num_queues);
+ RTE_LOG(INFO, VHOST_CONFIG, "get_inflight_fd queue_size: %u\n",
+ msg->payload.inflight.queue_size);
+
+ if (vq_is_packed(dev))
+ pervq_inflight_size = get_pervq_shm_size_packed(queue_size);
+ else
+ pervq_inflight_size = get_pervq_shm_size_split(queue_size);
+
+ mmap_size = num_queues * pervq_inflight_size;
+ addr = inflight_mem_alloc("vhost-inflight", mmap_size, &fd);
+ if (!addr) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "failed to alloc vhost inflight area\n");
+ msg->payload.inflight.mmap_size = 0;
+ return RTE_VHOST_MSG_RESULT_ERR;
+ }
+ memset(addr, 0, mmap_size);
+
+ dev->inflight_info->addr = addr;
+ dev->inflight_info->size = msg->payload.inflight.mmap_size = mmap_size;
+ dev->inflight_info->fd = msg->fds[0] = fd;
+ msg->payload.inflight.mmap_offset = 0;
+ msg->fd_num = 1;
+
+ if (vq_is_packed(dev)) {
+ for (i = 0; i < num_queues; i++) {
+ inflight_packed =
+ (struct rte_vhost_inflight_info_packed *)addr;
+ inflight_packed->used_wrap_counter = 1;
+ inflight_packed->old_used_wrap_counter = 1;
+ for (j = 0; j < queue_size; j++)
+ inflight_packed->desc[j].next = j + 1;
+ addr = (void *)((char *)addr + pervq_inflight_size);
+ }
+ }
+
+ RTE_LOG(INFO, VHOST_CONFIG,
+ "send inflight mmap_size: %"PRIu64"\n",
+ msg->payload.inflight.mmap_size);
+ RTE_LOG(INFO, VHOST_CONFIG,
+ "send inflight mmap_offset: %"PRIu64"\n",
+ msg->payload.inflight.mmap_offset);
+ RTE_LOG(INFO, VHOST_CONFIG,
+ "send inflight fd: %d\n", msg->fds[0]);
+
+ return RTE_VHOST_MSG_RESULT_REPLY;
+}
+
+static int
+vhost_user_set_inflight_fd(struct virtio_net **pdev, VhostUserMsg *msg,
+ int main_fd __rte_unused)
+{
+ uint64_t mmap_size, mmap_offset;
+ uint16_t num_queues, queue_size;
+ struct virtio_net *dev = *pdev;
+ uint32_t pervq_inflight_size;
+ struct vhost_virtqueue *vq;
+ void *addr;
+ int fd, i;
+
+ fd = msg->fds[0];
+ if (msg->size != sizeof(msg->payload.inflight) || fd < 0) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "invalid set_inflight_fd message size is %d,fd is %d\n",
+ msg->size, fd);
+ return RTE_VHOST_MSG_RESULT_ERR;
+ }
+
+ mmap_size = msg->payload.inflight.mmap_size;
+ mmap_offset = msg->payload.inflight.mmap_offset;
+ num_queues = msg->payload.inflight.num_queues;
+ queue_size = msg->payload.inflight.queue_size;
+
+ if (vq_is_packed(dev))
+ pervq_inflight_size = get_pervq_shm_size_packed(queue_size);
+ else
+ pervq_inflight_size = get_pervq_shm_size_split(queue_size);
+
+ RTE_LOG(INFO, VHOST_CONFIG,
+ "set_inflight_fd mmap_size: %"PRIu64"\n", mmap_size);
+ RTE_LOG(INFO, VHOST_CONFIG,
+ "set_inflight_fd mmap_offset: %"PRIu64"\n", mmap_offset);
+ RTE_LOG(INFO, VHOST_CONFIG,
+ "set_inflight_fd num_queues: %u\n", num_queues);
+ RTE_LOG(INFO, VHOST_CONFIG,
+ "set_inflight_fd queue_size: %u\n", queue_size);
+ RTE_LOG(INFO, VHOST_CONFIG,
+ "set_inflight_fd fd: %d\n", fd);
+ RTE_LOG(INFO, VHOST_CONFIG,
+ "set_inflight_fd pervq_inflight_size: %d\n",
+ pervq_inflight_size);
+
+ if (!dev->inflight_info) {
+ dev->inflight_info = calloc(1,
+ sizeof(struct inflight_mem_info));
+ if (dev->inflight_info == NULL) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "failed to alloc dev inflight area\n");
+ return RTE_VHOST_MSG_RESULT_ERR;
+ }
+ }
+
+ if (dev->inflight_info->addr)
+ munmap(dev->inflight_info->addr, dev->inflight_info->size);
+
+ addr = mmap(0, mmap_size, PROT_READ | PROT_WRITE, MAP_SHARED,
+ fd, mmap_offset);
+ if (addr == MAP_FAILED) {
+ RTE_LOG(ERR, VHOST_CONFIG, "failed to mmap share memory.\n");
+ return RTE_VHOST_MSG_RESULT_ERR;
+ }
+
+ if (dev->inflight_info->fd)
+ close(dev->inflight_info->fd);
+
+ dev->inflight_info->fd = fd;
+ dev->inflight_info->addr = addr;
+ dev->inflight_info->size = mmap_size;
+
+ for (i = 0; i < num_queues; i++) {
+ vq = dev->virtqueue[i];
+ if (vq_is_packed(dev)) {
+ vq->inflight_packed = addr;
+ vq->inflight_packed->desc_num = queue_size;
+ } else {
+ vq->inflight_split = addr;
+ vq->inflight_split->desc_num = queue_size;
+ }
+ addr = (void *)((char *)addr + pervq_inflight_size);
+ }
+
+ return RTE_VHOST_MSG_RESULT_OK;
+}
+
+static int
+vhost_user_set_vring_call(struct virtio_net **pdev, struct VhostUserMsg *msg,
+ int main_fd __rte_unused)
+{
+ struct virtio_net *dev = *pdev;
+ struct vhost_vring_file file;
+ struct vhost_virtqueue *vq;
+
+ file.index = msg->payload.u64 & VHOST_USER_VRING_IDX_MASK;
+ if (msg->payload.u64 & VHOST_USER_VRING_NOFD_MASK)
+ file.fd = VIRTIO_INVALID_EVENTFD;
+ else
+ file.fd = msg->fds[0];
+ RTE_LOG(INFO, VHOST_CONFIG,
+ "vring call idx:%d file:%d\n", file.index, file.fd);
+
+ vq = dev->virtqueue[file.index];
+ if (vq->callfd >= 0)
+ close(vq->callfd);
+
+ vq->callfd = file.fd;
+
+ return RTE_VHOST_MSG_RESULT_OK;
+}
+
+static int vhost_user_set_vring_err(struct virtio_net **pdev __rte_unused,
+ struct VhostUserMsg *msg,
+ int main_fd __rte_unused)
+{
+ if (!(msg->payload.u64 & VHOST_USER_VRING_NOFD_MASK))
+ close(msg->fds[0]);
+ RTE_LOG(INFO, VHOST_CONFIG, "not implemented\n");
+
+ return RTE_VHOST_MSG_RESULT_OK;
+}
+
+static int
+resubmit_desc_compare(const void *a, const void *b)
+{
+ const struct rte_vhost_resubmit_desc *desc0 = a;
+ const struct rte_vhost_resubmit_desc *desc1 = b;
+
+ if (desc1->counter > desc0->counter)
+ return 1;
+
+ return -1;
+}
+
+static int
+vhost_check_queue_inflights_split(struct virtio_net *dev,
+ struct vhost_virtqueue *vq)
+{
+ uint16_t i;
+ uint16_t resubmit_num = 0, last_io, num;
+ struct vring_used *used = vq->used;
+ struct rte_vhost_resubmit_info *resubmit;
+ struct rte_vhost_inflight_info_split *inflight_split;
+
+ if (!(dev->protocol_features &
+ (1ULL << VHOST_USER_PROTOCOL_F_INFLIGHT_SHMFD)))
+ return RTE_VHOST_MSG_RESULT_OK;
+
+ if ((!vq->inflight_split))
+ return RTE_VHOST_MSG_RESULT_ERR;
+
+ if (!vq->inflight_split->version) {
+ vq->inflight_split->version = INFLIGHT_VERSION;
+ return RTE_VHOST_MSG_RESULT_OK;
+ }
+
+ if (vq->resubmit_inflight)
+ return RTE_VHOST_MSG_RESULT_OK;
+
+ inflight_split = vq->inflight_split;
+ vq->global_counter = 0;
+ last_io = inflight_split->last_inflight_io;
+
+ if (inflight_split->used_idx != used->idx) {
+ inflight_split->desc[last_io].inflight = 0;
+ rte_smp_mb();
+ inflight_split->used_idx = used->idx;
+ }
+
+ for (i = 0; i < inflight_split->desc_num; i++) {
+ if (inflight_split->desc[i].inflight == 1)
+ resubmit_num++;
+ }
+
+ vq->last_avail_idx += resubmit_num;
+
+ if (resubmit_num) {
+ resubmit = calloc(1, sizeof(struct rte_vhost_resubmit_info));
+ if (!resubmit) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "failed to allocate memory for resubmit info.\n");
+ return RTE_VHOST_MSG_RESULT_ERR;
+ }
+
+ resubmit->resubmit_list = calloc(resubmit_num,
+ sizeof(struct rte_vhost_resubmit_desc));
+ if (!resubmit->resubmit_list) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "failed to allocate memory for inflight desc.\n");
+ free(resubmit);
+ return RTE_VHOST_MSG_RESULT_ERR;
+ }
+
+ num = 0;
+ for (i = 0; i < vq->inflight_split->desc_num; i++) {
+ if (vq->inflight_split->desc[i].inflight == 1) {
+ resubmit->resubmit_list[num].index = i;
+ resubmit->resubmit_list[num].counter =
+ inflight_split->desc[i].counter;
+ num++;
+ }
+ }
+ resubmit->resubmit_num = num;
+
+ if (resubmit->resubmit_num > 1)
+ qsort(resubmit->resubmit_list, resubmit->resubmit_num,
+ sizeof(struct rte_vhost_resubmit_desc),
+ resubmit_desc_compare);
+
+ vq->global_counter = resubmit->resubmit_list[0].counter + 1;
+ vq->resubmit_inflight = resubmit;
+ }
+
+ return RTE_VHOST_MSG_RESULT_OK;
+}
+
+static int
+vhost_check_queue_inflights_packed(struct virtio_net *dev,
+ struct vhost_virtqueue *vq)
+{
+ uint16_t i;
+ uint16_t resubmit_num = 0, old_used_idx, num;
+ struct rte_vhost_resubmit_info *resubmit;
+ struct rte_vhost_inflight_info_packed *inflight_packed;
+
+ if (!(dev->protocol_features &
+ (1ULL << VHOST_USER_PROTOCOL_F_INFLIGHT_SHMFD)))
+ return RTE_VHOST_MSG_RESULT_OK;
+
+ if ((!vq->inflight_packed))
+ return RTE_VHOST_MSG_RESULT_ERR;
+
+ if (!vq->inflight_packed->version) {
+ vq->inflight_packed->version = INFLIGHT_VERSION;
+ return RTE_VHOST_MSG_RESULT_OK;
+ }
+
+ if (vq->resubmit_inflight)
+ return RTE_VHOST_MSG_RESULT_OK;
+
+ inflight_packed = vq->inflight_packed;
+ vq->global_counter = 0;
+ old_used_idx = inflight_packed->old_used_idx;
+
+ if (inflight_packed->used_idx != old_used_idx) {
+ if (inflight_packed->desc[old_used_idx].inflight == 0) {
+ inflight_packed->old_used_idx =
+ inflight_packed->used_idx;
+ inflight_packed->old_used_wrap_counter =
+ inflight_packed->used_wrap_counter;
+ inflight_packed->old_free_head =
+ inflight_packed->free_head;
+ } else {
+ inflight_packed->used_idx =
+ inflight_packed->old_used_idx;
+ inflight_packed->used_wrap_counter =
+ inflight_packed->old_used_wrap_counter;
+ inflight_packed->free_head =
+ inflight_packed->old_free_head;
+ }
+ }
+
+ for (i = 0; i < inflight_packed->desc_num; i++) {
+ if (inflight_packed->desc[i].inflight == 1)
+ resubmit_num++;
+ }
+
+ if (resubmit_num) {
+ resubmit = calloc(1, sizeof(struct rte_vhost_resubmit_info));
+ if (resubmit == NULL) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "failed to allocate memory for resubmit info.\n");
+ return RTE_VHOST_MSG_RESULT_ERR;
+ }
+
+ resubmit->resubmit_list = calloc(resubmit_num,
+ sizeof(struct rte_vhost_resubmit_desc));
+ if (resubmit->resubmit_list == NULL) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "failed to allocate memory for resubmit desc.\n");
+ free(resubmit);
+ return RTE_VHOST_MSG_RESULT_ERR;
+ }
+
+ num = 0;
+ for (i = 0; i < inflight_packed->desc_num; i++) {
+ if (vq->inflight_packed->desc[i].inflight == 1) {
+ resubmit->resubmit_list[num].index = i;
+ resubmit->resubmit_list[num].counter =
+ inflight_packed->desc[i].counter;
+ num++;
+ }
+ }
+ resubmit->resubmit_num = num;
+
+ if (resubmit->resubmit_num > 1)
+ qsort(resubmit->resubmit_list, resubmit->resubmit_num,
+ sizeof(struct rte_vhost_resubmit_desc),
+ resubmit_desc_compare);
+
+ vq->global_counter = resubmit->resubmit_list[0].counter + 1;
+ vq->resubmit_inflight = resubmit;
+ }
+
+ return RTE_VHOST_MSG_RESULT_OK;
+}
+
+static int
+vhost_user_set_vring_kick(struct virtio_net **pdev, struct VhostUserMsg *msg,
+ int main_fd __rte_unused)
+{
+ struct virtio_net *dev = *pdev;
+ struct vhost_vring_file file;
+ struct vhost_virtqueue *vq;
+
+ file.index = msg->payload.u64 & VHOST_USER_VRING_IDX_MASK;
+ if (msg->payload.u64 & VHOST_USER_VRING_NOFD_MASK)
+ file.fd = VIRTIO_INVALID_EVENTFD;
+ else
+ file.fd = msg->fds[0];
+ RTE_LOG(INFO, VHOST_CONFIG,
+ "vring kick idx:%d file:%d\n", file.index, file.fd);
+
+ /* Interpret ring addresses only when ring is started. */
+ dev = translate_ring_addresses(dev, file.index);
+ if (!dev)
+ return RTE_VHOST_MSG_RESULT_ERR;
+
+ *pdev = dev;
+
+ vq = dev->virtqueue[file.index];
+
+ /*
+ * When VHOST_USER_F_PROTOCOL_FEATURES is not negotiated,
+ * the ring starts already enabled. Otherwise, it is enabled via
+ * the SET_VRING_ENABLE message.
+ */
+ if (!(dev->features & (1ULL << VHOST_USER_F_PROTOCOL_FEATURES))) {
+ vq->enabled = 1;
+ if (dev->notify_ops->vring_state_changed)
+ dev->notify_ops->vring_state_changed(
+ dev->vid, file.index, 1);
+ }
+
+ if (vq->kickfd >= 0)
+ close(vq->kickfd);
+ vq->kickfd = file.fd;
+
+ if (vq_is_packed(dev)) {
+ if (vhost_check_queue_inflights_packed(dev, vq)) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "failed to inflights for vq: %d\n", file.index);
+ return RTE_VHOST_MSG_RESULT_ERR;
+ }
+ } else {
+ if (vhost_check_queue_inflights_split(dev, vq)) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "failed to inflights for vq: %d\n", file.index);
+ return RTE_VHOST_MSG_RESULT_ERR;
+ }
+ }
+
+ return RTE_VHOST_MSG_RESULT_OK;
+}
+
+static void
+free_zmbufs(struct vhost_virtqueue *vq)
+{
+ drain_zmbuf_list(vq);
+
+ rte_free(vq->zmbufs);
+}
+
+/*
+ * when virtio is stopped, qemu will send us the GET_VRING_BASE message.
+ */
+static int
+vhost_user_get_vring_base(struct virtio_net **pdev,
+ struct VhostUserMsg *msg,
+ int main_fd __rte_unused)
+{
+ struct virtio_net *dev = *pdev;
+ struct vhost_virtqueue *vq = dev->virtqueue[msg->payload.state.index];
+ uint64_t val;
+
+ /* We have to stop the queue (virtio) if it is running. */
+ vhost_destroy_device_notify(dev);
+
dev->flags &= ~VIRTIO_DEV_READY;
+ dev->flags &= ~VIRTIO_DEV_VDPA_CONFIGURED;
- /* Here we are safe to get the last avail index */
- msg->payload.state.num = vq->last_avail_idx;
+ /* Here we are safe to get the indexes */
+ if (vq_is_packed(dev)) {
+ /*
+ * Bit[0:14]: avail index
+ * Bit[15]: avail wrap counter
+ */
+ val = vq->last_avail_idx & 0x7fff;
+ val |= vq->avail_wrap_counter << 15;
+ msg->payload.state.num = val;
+ } else {
+ 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->callfd = VIRTIO_UNINITIALIZED_EVENTFD;
+ vq->signalled_used_valid = false;
+
if (dev->dequeue_zero_copy)
free_zmbufs(vq);
- rte_free(vq->shadow_used_ring);
- vq->shadow_used_ring = NULL;
+ if (vq_is_packed(dev)) {
+ rte_free(vq->shadow_used_packed);
+ vq->shadow_used_packed = NULL;
+ } else {
+ rte_free(vq->shadow_used_split);
+ vq->shadow_used_split = NULL;
+ }
rte_free(vq->batch_copy_elems);
vq->batch_copy_elems = NULL;
- return 0;
+ msg->size = sizeof(msg->payload.state);
+ msg->fd_num = 0;
+
+ vring_invalidate(dev, vq);
+
+ return RTE_VHOST_MSG_RESULT_REPLY;
}
/*
* enable the virtio queue pair.
*/
static int
-vhost_user_set_vring_enable(struct virtio_net *dev,
- VhostUserMsg *msg)
+vhost_user_set_vring_enable(struct virtio_net **pdev,
+ struct VhostUserMsg *msg,
+ int main_fd __rte_unused)
{
+ struct virtio_net *dev = *pdev;
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;
+ /* On disable, rings have to be stopped being processed. */
+ if (!enable && dev->dequeue_zero_copy)
+ drain_zmbuf_list(dev->virtqueue[index]);
- return 0;
+ dev->virtqueue[index]->enabled = enable;
+
+ return RTE_VHOST_MSG_RESULT_OK;
}
-static void
-vhost_user_get_protocol_features(struct virtio_net *dev,
- struct VhostUserMsg *msg)
+static int
+vhost_user_get_protocol_features(struct virtio_net **pdev,
+ struct VhostUserMsg *msg,
+ int main_fd __rte_unused)
{
- uint64_t features, protocol_features = VHOST_USER_PROTOCOL_FEATURES;
+ struct virtio_net *dev = *pdev;
+ 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
msg->payload.u64 = protocol_features;
msg->size = sizeof(msg->payload.u64);
+ msg->fd_num = 0;
+
+ return RTE_VHOST_MSG_RESULT_REPLY;
}
-static void
-vhost_user_set_protocol_features(struct virtio_net *dev,
- uint64_t protocol_features)
+static int
+vhost_user_set_protocol_features(struct virtio_net **pdev,
+ struct VhostUserMsg *msg,
+ int main_fd __rte_unused)
{
- if (protocol_features & ~VHOST_USER_PROTOCOL_FEATURES)
- return;
+ struct virtio_net *dev = *pdev;
+ uint64_t protocol_features = msg->payload.u64;
+ uint64_t slave_protocol_features = 0;
+
+ rte_vhost_driver_get_protocol_features(dev->ifname,
+ &slave_protocol_features);
+ if (protocol_features & ~slave_protocol_features) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%d) received invalid protocol features.\n",
+ dev->vid);
+ return RTE_VHOST_MSG_RESULT_ERR;
+ }
dev->protocol_features = protocol_features;
+ RTE_LOG(INFO, VHOST_CONFIG,
+ "negotiated Vhost-user protocol features: 0x%" PRIx64 "\n",
+ dev->protocol_features);
+
+ return RTE_VHOST_MSG_RESULT_OK;
}
static int
-vhost_user_set_log_base(struct virtio_net *dev, struct VhostUserMsg *msg)
+vhost_user_set_log_base(struct virtio_net **pdev, struct VhostUserMsg *msg,
+ int main_fd __rte_unused)
{
+ struct virtio_net *dev = *pdev;
int fd = msg->fds[0];
uint64_t size, off;
void *addr;
if (fd < 0) {
RTE_LOG(ERR, VHOST_CONFIG, "invalid log fd: %d\n", fd);
- return -1;
+ return RTE_VHOST_MSG_RESULT_ERR;
}
if (msg->size != sizeof(VhostUserLog)) {
RTE_LOG(ERR, VHOST_CONFIG,
"invalid log base msg size: %"PRId32" != %d\n",
msg->size, (int)sizeof(VhostUserLog));
- return -1;
+ return RTE_VHOST_MSG_RESULT_ERR;
}
size = msg->payload.log.mmap_size;
RTE_LOG(ERR, VHOST_CONFIG,
"log offset %#"PRIx64" exceeds log size %#"PRIx64"\n",
off, size);
- return -1;
+ return RTE_VHOST_MSG_RESULT_ERR;
}
RTE_LOG(INFO, VHOST_CONFIG,
close(fd);
if (addr == MAP_FAILED) {
RTE_LOG(ERR, VHOST_CONFIG, "mmap log base failed!\n");
- return -1;
+ return RTE_VHOST_MSG_RESULT_ERR;
}
/*
dev->log_base = dev->log_addr + off;
dev->log_size = size;
- return 0;
+ /*
+ * The spec is not clear about it (yet), but QEMU doesn't expect
+ * any payload in the reply.
+ */
+ msg->size = 0;
+ msg->fd_num = 0;
+
+ return RTE_VHOST_MSG_RESULT_REPLY;
+}
+
+static int vhost_user_set_log_fd(struct virtio_net **pdev __rte_unused,
+ struct VhostUserMsg *msg,
+ int main_fd __rte_unused)
+{
+ close(msg->fds[0]);
+ RTE_LOG(INFO, VHOST_CONFIG, "not implemented.\n");
+
+ return RTE_VHOST_MSG_RESULT_OK;
}
/*
* a flag 'broadcast_rarp' to let rte_vhost_dequeue_burst() inject it.
*/
static int
-vhost_user_send_rarp(struct virtio_net *dev, struct VhostUserMsg *msg)
+vhost_user_send_rarp(struct virtio_net **pdev, struct VhostUserMsg *msg,
+ int main_fd __rte_unused)
{
+ struct virtio_net *dev = *pdev;
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;
+ return RTE_VHOST_MSG_RESULT_OK;
}
static int
-vhost_user_net_set_mtu(struct virtio_net *dev, struct VhostUserMsg *msg)
+vhost_user_net_set_mtu(struct virtio_net **pdev, struct VhostUserMsg *msg,
+ int main_fd __rte_unused)
{
+ struct virtio_net *dev = *pdev;
if (msg->payload.u64 < VIRTIO_MIN_MTU ||
msg->payload.u64 > VIRTIO_MAX_MTU) {
RTE_LOG(ERR, VHOST_CONFIG, "Invalid MTU size (%"PRIu64")\n",
msg->payload.u64);
- return -1;
+ return RTE_VHOST_MSG_RESULT_ERR;
}
dev->mtu = msg->payload.u64;
- return 0;
+ return RTE_VHOST_MSG_RESULT_OK;
}
static int
-vhost_user_set_req_fd(struct virtio_net *dev, struct VhostUserMsg *msg)
+vhost_user_set_req_fd(struct virtio_net **pdev, struct VhostUserMsg *msg,
+ int main_fd __rte_unused)
{
+ struct virtio_net *dev = *pdev;
int fd = msg->fds[0];
if (fd < 0) {
RTE_LOG(ERR, VHOST_CONFIG,
"Invalid file descriptor for slave channel (%d)\n",
fd);
- return -1;
+ return RTE_VHOST_MSG_RESULT_ERR;
}
+ if (dev->slave_req_fd >= 0)
+ close(dev->slave_req_fd);
+
dev->slave_req_fd = fd;
- return 0;
+ return RTE_VHOST_MSG_RESULT_OK;
}
static int
-is_vring_iotlb_update(struct vhost_virtqueue *vq, struct vhost_iotlb_msg *imsg)
+is_vring_iotlb_split(struct vhost_virtqueue *vq, struct vhost_iotlb_msg *imsg)
{
struct vhost_vring_addr *ra;
- uint64_t start, end;
+ uint64_t start, end, len;
start = imsg->iova;
end = start + imsg->size;
ra = &vq->ring_addrs;
- if (ra->desc_user_addr >= start && ra->desc_user_addr < end)
+ len = sizeof(struct vring_desc) * vq->size;
+ if (ra->desc_user_addr < end && (ra->desc_user_addr + len) > start)
return 1;
- if (ra->avail_user_addr >= start && ra->avail_user_addr < end)
+
+ len = sizeof(struct vring_avail) + sizeof(uint16_t) * vq->size;
+ if (ra->avail_user_addr < end && (ra->avail_user_addr + len) > start)
return 1;
- if (ra->used_user_addr >= start && ra->used_user_addr < end)
+
+ len = sizeof(struct vring_used) +
+ sizeof(struct vring_used_elem) * vq->size;
+ if (ra->used_user_addr < end && (ra->used_user_addr + len) > start)
return 1;
return 0;
}
static int
-is_vring_iotlb_invalidate(struct vhost_virtqueue *vq,
- struct vhost_iotlb_msg *imsg)
+is_vring_iotlb_packed(struct vhost_virtqueue *vq, struct vhost_iotlb_msg *imsg)
{
- uint64_t istart, iend, vstart, vend;
+ struct vhost_vring_addr *ra;
+ uint64_t start, end, len;
- istart = imsg->iova;
- iend = istart + imsg->size - 1;
+ start = imsg->iova;
+ end = start + imsg->size;
- vstart = (uintptr_t)vq->desc;
- vend = vstart + sizeof(struct vring_desc) * vq->size - 1;
- if (vstart <= iend && istart <= vend)
+ ra = &vq->ring_addrs;
+ len = sizeof(struct vring_packed_desc) * vq->size;
+ if (ra->desc_user_addr < end && (ra->desc_user_addr + len) > start)
return 1;
- vstart = (uintptr_t)vq->avail;
- vend = vstart + sizeof(struct vring_avail);
- vend += sizeof(uint16_t) * vq->size - 1;
- if (vstart <= iend && istart <= vend)
+ len = sizeof(struct vring_packed_desc_event);
+ if (ra->avail_user_addr < end && (ra->avail_user_addr + len) > start)
return 1;
- vstart = (uintptr_t)vq->used;
- vend = vstart + sizeof(struct vring_used);
- vend += sizeof(struct vring_used_elem) * vq->size - 1;
- if (vstart <= iend && istart <= vend)
+ len = sizeof(struct vring_packed_desc_event);
+ if (ra->used_user_addr < end && (ra->used_user_addr + len) > start)
return 1;
return 0;
}
+static int is_vring_iotlb(struct virtio_net *dev,
+ struct vhost_virtqueue *vq,
+ struct vhost_iotlb_msg *imsg)
+{
+ if (vq_is_packed(dev))
+ return is_vring_iotlb_packed(vq, imsg);
+ else
+ return is_vring_iotlb_split(vq, imsg);
+}
+
static int
-vhost_user_iotlb_msg(struct virtio_net **pdev, struct VhostUserMsg *msg)
+vhost_user_iotlb_msg(struct virtio_net **pdev, struct VhostUserMsg *msg,
+ int main_fd __rte_unused)
{
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;
+ return RTE_VHOST_MSG_RESULT_ERR;
for (i = 0; i < dev->nr_vring; i++) {
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))
+ if (is_vring_iotlb(dev, vq, imsg))
*pdev = dev = translate_ring_addresses(dev, i);
}
break;
vhost_user_iotlb_cache_remove(vq, imsg->iova,
imsg->size);
- if (is_vring_iotlb_invalidate(vq, imsg))
+ if (is_vring_iotlb(dev, vq, imsg))
vring_invalidate(dev, vq);
}
break;
default:
RTE_LOG(ERR, VHOST_CONFIG, "Invalid IOTLB message type (%d)\n",
imsg->type);
- return -1;
+ return RTE_VHOST_MSG_RESULT_ERR;
}
- return 0;
+ return RTE_VHOST_MSG_RESULT_OK;
+}
+
+static int
+vhost_user_set_postcopy_advise(struct virtio_net **pdev,
+ struct VhostUserMsg *msg,
+ int main_fd __rte_unused)
+{
+ struct virtio_net *dev = *pdev;
+#ifdef RTE_LIBRTE_VHOST_POSTCOPY
+ struct uffdio_api api_struct;
+
+ dev->postcopy_ufd = syscall(__NR_userfaultfd, O_CLOEXEC | O_NONBLOCK);
+
+ if (dev->postcopy_ufd == -1) {
+ RTE_LOG(ERR, VHOST_CONFIG, "Userfaultfd not available: %s\n",
+ strerror(errno));
+ return RTE_VHOST_MSG_RESULT_ERR;
+ }
+ api_struct.api = UFFD_API;
+ api_struct.features = 0;
+ if (ioctl(dev->postcopy_ufd, UFFDIO_API, &api_struct)) {
+ RTE_LOG(ERR, VHOST_CONFIG, "UFFDIO_API ioctl failure: %s\n",
+ strerror(errno));
+ close(dev->postcopy_ufd);
+ dev->postcopy_ufd = -1;
+ return RTE_VHOST_MSG_RESULT_ERR;
+ }
+ msg->fds[0] = dev->postcopy_ufd;
+ msg->fd_num = 1;
+
+ return RTE_VHOST_MSG_RESULT_REPLY;
+#else
+ dev->postcopy_ufd = -1;
+ msg->fd_num = 0;
+
+ return RTE_VHOST_MSG_RESULT_ERR;
+#endif
}
+static int
+vhost_user_set_postcopy_listen(struct virtio_net **pdev,
+ struct VhostUserMsg *msg __rte_unused,
+ int main_fd __rte_unused)
+{
+ struct virtio_net *dev = *pdev;
+
+ if (dev->mem && dev->mem->nregions) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "Regions already registered at postcopy-listen\n");
+ return RTE_VHOST_MSG_RESULT_ERR;
+ }
+ dev->postcopy_listening = 1;
+
+ return RTE_VHOST_MSG_RESULT_OK;
+}
+
+static int
+vhost_user_postcopy_end(struct virtio_net **pdev, struct VhostUserMsg *msg,
+ int main_fd __rte_unused)
+{
+ struct virtio_net *dev = *pdev;
+
+ dev->postcopy_listening = 0;
+ if (dev->postcopy_ufd >= 0) {
+ close(dev->postcopy_ufd);
+ dev->postcopy_ufd = -1;
+ }
+
+ msg->payload.u64 = 0;
+ msg->size = sizeof(msg->payload.u64);
+ msg->fd_num = 0;
+
+ return RTE_VHOST_MSG_RESULT_REPLY;
+}
+
+typedef int (*vhost_message_handler_t)(struct virtio_net **pdev,
+ struct VhostUserMsg *msg,
+ int main_fd);
+static vhost_message_handler_t vhost_message_handlers[VHOST_USER_MAX] = {
+ [VHOST_USER_NONE] = NULL,
+ [VHOST_USER_GET_FEATURES] = vhost_user_get_features,
+ [VHOST_USER_SET_FEATURES] = vhost_user_set_features,
+ [VHOST_USER_SET_OWNER] = vhost_user_set_owner,
+ [VHOST_USER_RESET_OWNER] = vhost_user_reset_owner,
+ [VHOST_USER_SET_MEM_TABLE] = vhost_user_set_mem_table,
+ [VHOST_USER_SET_LOG_BASE] = vhost_user_set_log_base,
+ [VHOST_USER_SET_LOG_FD] = vhost_user_set_log_fd,
+ [VHOST_USER_SET_VRING_NUM] = vhost_user_set_vring_num,
+ [VHOST_USER_SET_VRING_ADDR] = vhost_user_set_vring_addr,
+ [VHOST_USER_SET_VRING_BASE] = vhost_user_set_vring_base,
+ [VHOST_USER_GET_VRING_BASE] = vhost_user_get_vring_base,
+ [VHOST_USER_SET_VRING_KICK] = vhost_user_set_vring_kick,
+ [VHOST_USER_SET_VRING_CALL] = vhost_user_set_vring_call,
+ [VHOST_USER_SET_VRING_ERR] = vhost_user_set_vring_err,
+ [VHOST_USER_GET_PROTOCOL_FEATURES] = vhost_user_get_protocol_features,
+ [VHOST_USER_SET_PROTOCOL_FEATURES] = vhost_user_set_protocol_features,
+ [VHOST_USER_GET_QUEUE_NUM] = vhost_user_get_queue_num,
+ [VHOST_USER_SET_VRING_ENABLE] = vhost_user_set_vring_enable,
+ [VHOST_USER_SEND_RARP] = vhost_user_send_rarp,
+ [VHOST_USER_NET_SET_MTU] = vhost_user_net_set_mtu,
+ [VHOST_USER_SET_SLAVE_REQ_FD] = vhost_user_set_req_fd,
+ [VHOST_USER_IOTLB_MSG] = vhost_user_iotlb_msg,
+ [VHOST_USER_POSTCOPY_ADVISE] = vhost_user_set_postcopy_advise,
+ [VHOST_USER_POSTCOPY_LISTEN] = vhost_user_set_postcopy_listen,
+ [VHOST_USER_POSTCOPY_END] = vhost_user_postcopy_end,
+ [VHOST_USER_GET_INFLIGHT_FD] = vhost_user_get_inflight_fd,
+ [VHOST_USER_SET_INFLIGHT_FD] = vhost_user_set_inflight_fd,
+};
+
/* return bytes# of read on success or negative val on failure. */
static int
read_vhost_message(int sockfd, struct VhostUserMsg *msg)
int ret;
ret = read_fd_message(sockfd, (char *)msg, VHOST_USER_HDR_SIZE,
- msg->fds, VHOST_MEMORY_MAX_NREGIONS);
+ msg->fds, VHOST_MEMORY_MAX_NREGIONS, &msg->fd_num);
if (ret <= 0)
return ret;
- if (msg && msg->size) {
+ if (msg->size) {
if (msg->size > sizeof(msg->payload)) {
RTE_LOG(ERR, VHOST_CONFIG,
"invalid msg size: %d\n", msg->size);
}
static int
-send_vhost_message(int sockfd, struct VhostUserMsg *msg, int *fds, int fd_num)
+send_vhost_message(int sockfd, struct VhostUserMsg *msg)
{
if (!msg)
return 0;
return send_fd_message(sockfd, (char *)msg,
- VHOST_USER_HDR_SIZE + msg->size, fds, fd_num);
+ VHOST_USER_HDR_SIZE + msg->size, msg->fds, msg->fd_num);
}
static int
msg->flags |= VHOST_USER_VERSION;
msg->flags |= VHOST_USER_REPLY_MASK;
- return send_vhost_message(sockfd, msg, NULL, 0);
+ return send_vhost_message(sockfd, msg);
+}
+
+static int
+send_vhost_slave_message(struct virtio_net *dev, struct VhostUserMsg *msg)
+{
+ 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);
+ if (ret < 0 && (msg->flags & VHOST_USER_NEED_REPLY))
+ rte_spinlock_unlock(&dev->slave_req_lock);
+
+ return ret;
}
/*
* Allocate a queue pair if it hasn't been allocated yet
*/
static int
-vhost_user_check_and_alloc_queue_pair(struct virtio_net *dev, VhostUserMsg *msg)
+vhost_user_check_and_alloc_queue_pair(struct virtio_net *dev,
+ struct VhostUserMsg *msg)
{
uint16_t vring_idx;
{
struct virtio_net *dev;
struct VhostUserMsg msg;
+ struct rte_vdpa_device *vdpa_dev;
+ int did = -1;
int ret;
int unlock_required = 0;
+ bool handled;
+ int request;
dev = get_device(vid);
if (dev == NULL)
}
ret = read_vhost_message(fd, &msg);
- if (ret <= 0 || msg.request.master >= VHOST_USER_MAX) {
+ if (ret <= 0) {
if (ret < 0)
RTE_LOG(ERR, VHOST_CONFIG,
"vhost read message failed\n");
- else if (ret == 0)
+ else
RTE_LOG(INFO, VHOST_CONFIG,
"vhost peer closed\n");
- else
- RTE_LOG(ERR, VHOST_CONFIG,
- "vhost read incorrect message\n");
return -1;
}
ret = 0;
- if (msg.request.master != VHOST_USER_IOTLB_MSG)
- RTE_LOG(INFO, VHOST_CONFIG, "read message %s\n",
- vhost_message_str[msg.request.master]);
- else
- RTE_LOG(DEBUG, VHOST_CONFIG, "read message %s\n",
- vhost_message_str[msg.request.master]);
+ request = msg.request.master;
+ if (request > VHOST_USER_NONE && request < VHOST_USER_MAX &&
+ vhost_message_str[request]) {
+ if (request != VHOST_USER_IOTLB_MSG)
+ RTE_LOG(INFO, VHOST_CONFIG, "read message %s\n",
+ vhost_message_str[request]);
+ else
+ RTE_LOG(DEBUG, VHOST_CONFIG, "read message %s\n",
+ vhost_message_str[request]);
+ } else {
+ RTE_LOG(DEBUG, VHOST_CONFIG, "External request %d\n", request);
+ }
ret = vhost_user_check_and_alloc_queue_pair(dev, &msg);
if (ret < 0) {
* inactive, so it is safe. Otherwise taking the access_lock
* would cause a dead lock.
*/
- switch (msg.request.master) {
+ switch (request) {
case VHOST_USER_SET_FEATURES:
case VHOST_USER_SET_PROTOCOL_FEATURES:
case VHOST_USER_SET_OWNER:
}
- switch (msg.request.master) {
- case VHOST_USER_GET_FEATURES:
- msg.payload.u64 = vhost_user_get_features(dev);
- msg.size = sizeof(msg.payload.u64);
- send_vhost_reply(fd, &msg);
- break;
- case VHOST_USER_SET_FEATURES:
- ret = vhost_user_set_features(dev, msg.payload.u64);
- if (ret)
- return -1;
- break;
-
- case VHOST_USER_GET_PROTOCOL_FEATURES:
- vhost_user_get_protocol_features(dev, &msg);
- send_vhost_reply(fd, &msg);
- break;
- case VHOST_USER_SET_PROTOCOL_FEATURES:
- vhost_user_set_protocol_features(dev, msg.payload.u64);
- break;
-
- case VHOST_USER_SET_OWNER:
- vhost_user_set_owner();
- break;
- case VHOST_USER_RESET_OWNER:
- vhost_user_reset_owner(dev);
- break;
-
- case VHOST_USER_SET_MEM_TABLE:
- ret = vhost_user_set_mem_table(dev, &msg);
- break;
-
- case VHOST_USER_SET_LOG_BASE:
- vhost_user_set_log_base(dev, &msg);
-
- /* it needs a reply */
- msg.size = sizeof(msg.payload.u64);
- send_vhost_reply(fd, &msg);
- break;
- case VHOST_USER_SET_LOG_FD:
- close(msg.fds[0]);
- RTE_LOG(INFO, VHOST_CONFIG, "not implemented.\n");
- break;
-
- case VHOST_USER_SET_VRING_NUM:
- vhost_user_set_vring_num(dev, &msg);
- break;
- case VHOST_USER_SET_VRING_ADDR:
- vhost_user_set_vring_addr(&dev, &msg);
- break;
- case VHOST_USER_SET_VRING_BASE:
- vhost_user_set_vring_base(dev, &msg);
- break;
-
- case VHOST_USER_GET_VRING_BASE:
- vhost_user_get_vring_base(dev, &msg);
- msg.size = sizeof(msg.payload.state);
- send_vhost_reply(fd, &msg);
- break;
-
- case VHOST_USER_SET_VRING_KICK:
- vhost_user_set_vring_kick(&dev, &msg);
- break;
- case VHOST_USER_SET_VRING_CALL:
- vhost_user_set_vring_call(dev, &msg);
- break;
-
- case VHOST_USER_SET_VRING_ERR:
- if (!(msg.payload.u64 & VHOST_USER_VRING_NOFD_MASK))
- close(msg.fds[0]);
- RTE_LOG(INFO, VHOST_CONFIG, "not implemented\n");
- break;
-
- case VHOST_USER_GET_QUEUE_NUM:
- msg.payload.u64 = VHOST_MAX_QUEUE_PAIRS;
- msg.size = sizeof(msg.payload.u64);
- send_vhost_reply(fd, &msg);
- break;
-
- case VHOST_USER_SET_VRING_ENABLE:
- vhost_user_set_vring_enable(dev, &msg);
- break;
- case VHOST_USER_SEND_RARP:
- vhost_user_send_rarp(dev, &msg);
- break;
-
- case VHOST_USER_NET_SET_MTU:
- ret = vhost_user_net_set_mtu(dev, &msg);
- break;
-
- case VHOST_USER_SET_SLAVE_REQ_FD:
- ret = vhost_user_set_req_fd(dev, &msg);
- break;
+ handled = false;
+ if (dev->extern_ops.pre_msg_handle) {
+ ret = (*dev->extern_ops.pre_msg_handle)(dev->vid,
+ (void *)&msg);
+ switch (ret) {
+ case RTE_VHOST_MSG_RESULT_REPLY:
+ send_vhost_reply(fd, &msg);
+ /* Fall-through */
+ case RTE_VHOST_MSG_RESULT_ERR:
+ case RTE_VHOST_MSG_RESULT_OK:
+ handled = true;
+ goto skip_to_post_handle;
+ case RTE_VHOST_MSG_RESULT_NOT_HANDLED:
+ default:
+ break;
+ }
+ }
- case VHOST_USER_IOTLB_MSG:
- ret = vhost_user_iotlb_msg(&dev, &msg);
- break;
+ if (request > VHOST_USER_NONE && request < VHOST_USER_MAX) {
+ if (!vhost_message_handlers[request])
+ goto skip_to_post_handle;
+ ret = vhost_message_handlers[request](&dev, &msg, fd);
- default:
- ret = -1;
- break;
+ switch (ret) {
+ case RTE_VHOST_MSG_RESULT_ERR:
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "Processing %s failed.\n",
+ vhost_message_str[request]);
+ handled = true;
+ break;
+ case RTE_VHOST_MSG_RESULT_OK:
+ RTE_LOG(DEBUG, VHOST_CONFIG,
+ "Processing %s succeeded.\n",
+ vhost_message_str[request]);
+ handled = true;
+ break;
+ case RTE_VHOST_MSG_RESULT_REPLY:
+ RTE_LOG(DEBUG, VHOST_CONFIG,
+ "Processing %s succeeded and needs reply.\n",
+ vhost_message_str[request]);
+ send_vhost_reply(fd, &msg);
+ handled = true;
+ break;
+ default:
+ break;
+ }
+ }
+skip_to_post_handle:
+ if (ret != RTE_VHOST_MSG_RESULT_ERR &&
+ dev->extern_ops.post_msg_handle) {
+ ret = (*dev->extern_ops.post_msg_handle)(dev->vid,
+ (void *)&msg);
+ switch (ret) {
+ case RTE_VHOST_MSG_RESULT_REPLY:
+ send_vhost_reply(fd, &msg);
+ /* Fall-through */
+ case RTE_VHOST_MSG_RESULT_ERR:
+ case RTE_VHOST_MSG_RESULT_OK:
+ handled = true;
+ case RTE_VHOST_MSG_RESULT_NOT_HANDLED:
+ default:
+ break;
+ }
}
if (unlock_required)
vhost_user_unlock_all_queue_pairs(dev);
+ /* If message was not handled at this stage, treat it as an error */
+ if (!handled) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "vhost message (req: %d) was not handled.\n", request);
+ ret = RTE_VHOST_MSG_RESULT_ERR;
+ }
+
+ /*
+ * If the request required a reply that was already sent,
+ * this optional reply-ack won't be sent as the
+ * VHOST_USER_NEED_REPLY was cleared in send_vhost_reply().
+ */
if (msg.flags & VHOST_USER_NEED_REPLY) {
- msg.payload.u64 = !!ret;
+ msg.payload.u64 = ret == RTE_VHOST_MSG_RESULT_ERR;
msg.size = sizeof(msg.payload.u64);
+ msg.fd_num = 0;
send_vhost_reply(fd, &msg);
+ } else if (ret == RTE_VHOST_MSG_RESULT_ERR) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "vhost message handling failed.\n");
+ return -1;
}
if (!(dev->flags & VIRTIO_DEV_RUNNING) && virtio_is_ready(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_CALL) {
+ if (vdpa_dev->ops->dev_conf)
+ vdpa_dev->ops->dev_conf(dev->vid);
+ dev->flags |= VIRTIO_DEV_VDPA_CONFIGURED;
+ }
+
return 0;
}
+static int process_slave_message_reply(struct virtio_net *dev,
+ const struct VhostUserMsg *msg)
+{
+ struct 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, NULL, 0);
+ ret = send_vhost_message(dev->slave_req_fd, &msg);
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 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 {
+ msg.fds[0] = fd;
+ msg.fd_num = 1;
+ }
+
+ ret = send_vhost_slave_message(dev, &msg);
+ 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 rte_vhost_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);
+ if (!vdpa_dev)
+ return -ENODEV;
+
+ 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;
+}