#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_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);
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;
dev->virtqueue[dev->nr_vring] = NULL;
cleanup_vq(vq, 1);
+ cleanup_vq_inflight(dev, vq);
free_vq(dev, vq);
}
}
*
* Queue Size value is always a power of 2. The maximum Queue Size
* value is 32768.
+ *
+ * VIRTIO 1.1 2.7 Virtqueues says:
+ *
+ * Packed virtqueues support up to 2^15 entries each.
*/
- if ((vq->size & (vq->size - 1)) || vq->size > 32768) {
+ if (!vq_is_packed(dev)) {
+ if (vq->size & (vq->size - 1)) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "invalid virtqueue size %u\n", vq->size);
+ return RTE_VHOST_MSG_RESULT_ERR;
+ }
+ }
+
+ if (vq->size > 32768) {
RTE_LOG(ERR, VHOST_CONFIG,
"invalid virtqueue size %u\n", vq->size);
return RTE_VHOST_MSG_RESULT_ERR;
goto err_mmap;
}
RTE_LOG(INFO, VHOST_CONFIG,
- "\t userfaultfd registered for range : %llx - %llx\n",
- reg_struct.range.start,
- reg_struct.range.start +
- reg_struct.range.len - 1);
+ "\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
return 1;
}
+static void *
+inflight_mem_alloc(const char *name, size_t size, int *fd)
+{
+ void *ptr;
+ int mfd = -1;
+ char fname[20] = "/tmp/memfd-XXXXXX";
+
+ *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;
+ }
+
+ unlink(fname);
+ }
+
+ if (ftruncate(mfd, size) == -1) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "failed to alloc inflight buffer\n");
+ close(mfd);
+ return NULL;
+ }
+
+ 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;
+ }
+
+ *fd = mfd;
+ return ptr;
+}
+
+static uint32_t
+get_pervq_shm_size_split(uint16_t queue_size)
+{
+ return RTE_ALIGN_MUL_CEIL(sizeof(struct rte_vhost_inflight_desc_split) *
+ queue_size + sizeof(uint64_t) +
+ sizeof(uint16_t) * 4, INFLIGHT_ALIGNMENT);
+}
+
+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);
+}
+
+static int
+vhost_user_get_inflight_fd(struct virtio_net **pdev,
+ VhostUserMsg *msg,
+ int main_fd __rte_unused)
+{
+ 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;
+
+ 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)
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)
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;
}
[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)
git.droids-corp.org / dpdk.git / blobdiff