*/
#include <string.h>
#include <unistd.h>
-#include <sys/mman.h>
+#include <sys/eventfd.h>
#include <rte_malloc.h>
#include <rte_errno.h>
static void
-mlx5_vdpa_virtq_handler(void *cb_arg)
+mlx5_vdpa_virtq_kick_handler(void *cb_arg)
{
struct mlx5_vdpa_virtq *virtq = cb_arg;
struct mlx5_vdpa_priv *priv = virtq->priv;
uint64_t buf;
int nbytes;
+ int retry;
- do {
- nbytes = read(virtq->intr_handle.fd, &buf, 8);
+ pthread_mutex_lock(&virtq->virtq_lock);
+ if (priv->state != MLX5_VDPA_STATE_CONFIGURED && !virtq->enable) {
+ pthread_mutex_unlock(&virtq->virtq_lock);
+ DRV_LOG(ERR, "device %d queue %d down, skip kick handling",
+ priv->vid, virtq->index);
+ return;
+ }
+ if (rte_intr_fd_get(virtq->intr_handle) < 0) {
+ pthread_mutex_unlock(&virtq->virtq_lock);
+ return;
+ }
+ for (retry = 0; retry < 3; ++retry) {
+ nbytes = read(rte_intr_fd_get(virtq->intr_handle), &buf,
+ 8);
if (nbytes < 0) {
if (errno == EINTR ||
errno == EWOULDBLOCK ||
errno == EAGAIN)
continue;
- DRV_LOG(ERR, "Failed to read kickfd of virtq %d: %s",
+ DRV_LOG(ERR, "Failed to read kickfd of virtq %d: %s.",
virtq->index, strerror(errno));
}
break;
- } while (1);
+ }
+ if (nbytes < 0) {
+ pthread_mutex_unlock(&virtq->virtq_lock);
+ return;
+ }
+ rte_spinlock_lock(&priv->db_lock);
rte_write32(virtq->index, priv->virtq_db_addr);
+ rte_spinlock_unlock(&priv->db_lock);
+ pthread_mutex_unlock(&virtq->virtq_lock);
+ if (priv->state != MLX5_VDPA_STATE_CONFIGURED && !virtq->enable) {
+ DRV_LOG(ERR, "device %d queue %d down, skip kick handling.",
+ priv->vid, virtq->index);
+ return;
+ }
+ if (virtq->notifier_state == MLX5_VDPA_NOTIFIER_STATE_DISABLED) {
+ if (rte_vhost_host_notifier_ctrl(priv->vid, virtq->index, true))
+ virtq->notifier_state = MLX5_VDPA_NOTIFIER_STATE_ERR;
+ else
+ virtq->notifier_state =
+ MLX5_VDPA_NOTIFIER_STATE_ENABLED;
+ DRV_LOG(INFO, "Virtq %u notifier state is %s.", virtq->index,
+ virtq->notifier_state ==
+ MLX5_VDPA_NOTIFIER_STATE_ENABLED ? "enabled" :
+ "disabled");
+ }
DRV_LOG(DEBUG, "Ring virtq %u doorbell.", virtq->index);
}
-static int
-mlx5_vdpa_virtq_unset(struct mlx5_vdpa_virtq *virtq)
+/* Virtq must be locked before calling this function. */
+static void
+mlx5_vdpa_virtq_unregister_intr_handle(struct mlx5_vdpa_virtq *virtq)
{
- unsigned int i;
- int retries = MLX5_VDPA_INTR_RETRIES;
int ret = -EAGAIN;
- if (virtq->intr_handle.fd) {
- while (retries-- && ret == -EAGAIN) {
- ret = rte_intr_callback_unregister(&virtq->intr_handle,
- mlx5_vdpa_virtq_handler,
- virtq);
+ if (!virtq->intr_handle)
+ return;
+ if (rte_intr_fd_get(virtq->intr_handle) >= 0) {
+ while (ret == -EAGAIN) {
+ ret = rte_intr_callback_unregister(virtq->intr_handle,
+ mlx5_vdpa_virtq_kick_handler, virtq);
if (ret == -EAGAIN) {
- DRV_LOG(DEBUG, "Try again to unregister fd %d "
- "of virtq %d interrupt, retries = %d.",
- virtq->intr_handle.fd,
- (int)virtq->index, retries);
+ DRV_LOG(DEBUG, "Try again to unregister fd %d of virtq %hu interrupt",
+ rte_intr_fd_get(virtq->intr_handle),
+ virtq->index);
+ pthread_mutex_unlock(&virtq->virtq_lock);
usleep(MLX5_VDPA_INTR_RETRIES_USEC);
+ pthread_mutex_lock(&virtq->virtq_lock);
}
}
- memset(&virtq->intr_handle, 0, sizeof(virtq->intr_handle));
+ (void)rte_intr_fd_set(virtq->intr_handle, -1);
}
- if (virtq->virtq) {
+ rte_intr_instance_free(virtq->intr_handle);
+ virtq->intr_handle = NULL;
+}
+
+/* Release cached VQ resources. */
+void
+mlx5_vdpa_virtqs_cleanup(struct mlx5_vdpa_priv *priv)
+{
+ unsigned int i, j;
+
+ for (i = 0; i < priv->caps.max_num_virtio_queues; i++) {
+ struct mlx5_vdpa_virtq *virtq = &priv->virtqs[i];
+
+ pthread_mutex_lock(&virtq->virtq_lock);
+ virtq->configured = 0;
+ for (j = 0; j < RTE_DIM(virtq->umems); ++j) {
+ if (virtq->umems[j].obj) {
+ claim_zero(mlx5_glue->devx_umem_dereg
+ (virtq->umems[j].obj));
+ virtq->umems[j].obj = NULL;
+ }
+ if (virtq->umems[j].buf) {
+ rte_free(virtq->umems[j].buf);
+ virtq->umems[j].buf = NULL;
+ }
+ virtq->umems[j].size = 0;
+ }
+ if (virtq->eqp.fw_qp)
+ mlx5_vdpa_event_qp_destroy(&virtq->eqp);
+ pthread_mutex_unlock(&virtq->virtq_lock);
+ }
+}
+
+
+static int
+mlx5_vdpa_virtq_unset(struct mlx5_vdpa_virtq *virtq)
+{
+ int ret = -EAGAIN;
+
+ mlx5_vdpa_virtq_unregister_intr_handle(virtq);
+ if (virtq->configured) {
+ ret = mlx5_vdpa_virtq_stop(virtq->priv, virtq->index);
+ if (ret)
+ DRV_LOG(WARNING, "Failed to stop virtq %d.",
+ virtq->index);
+ virtq->configured = 0;
claim_zero(mlx5_devx_cmd_destroy(virtq->virtq));
- virtq->virtq = NULL;
- }
- for (i = 0; i < RTE_DIM(virtq->umems); ++i) {
- if (virtq->umems[i].obj)
- claim_zero(mlx5_glue->devx_umem_dereg
- (virtq->umems[i].obj));
- if (virtq->umems[i].buf)
- rte_free(virtq->umems[i].buf);
- }
- memset(&virtq->umems, 0, sizeof(virtq->umems));
- if (virtq->eqp.fw_qp)
- mlx5_vdpa_event_qp_destroy(&virtq->eqp);
+ }
+ virtq->virtq = NULL;
+ virtq->notifier_state = MLX5_VDPA_NOTIFIER_STATE_DISABLED;
return 0;
}
void
mlx5_vdpa_virtqs_release(struct mlx5_vdpa_priv *priv)
{
- struct mlx5_vdpa_virtq *entry;
- struct mlx5_vdpa_virtq *next;
-
- entry = SLIST_FIRST(&priv->virtq_list);
- while (entry) {
- next = SLIST_NEXT(entry, next);
- mlx5_vdpa_virtq_unset(entry);
- SLIST_REMOVE(&priv->virtq_list, entry, mlx5_vdpa_virtq, next);
- rte_free(entry);
- entry = next;
- }
- SLIST_INIT(&priv->virtq_list);
- if (priv->tis) {
- claim_zero(mlx5_devx_cmd_destroy(priv->tis));
- priv->tis = NULL;
- }
- if (priv->td) {
- claim_zero(mlx5_devx_cmd_destroy(priv->td));
- priv->td = NULL;
- }
- if (priv->virtq_db_addr) {
- claim_zero(munmap(priv->virtq_db_addr, priv->var->length));
- priv->virtq_db_addr = NULL;
- }
- if (priv->var) {
- mlx5_glue->dv_free_var(priv->var);
- priv->var = NULL;
+ struct mlx5_vdpa_virtq *virtq;
+ int i;
+
+ for (i = 0; i < priv->nr_virtqs; i++) {
+ virtq = &priv->virtqs[i];
+ pthread_mutex_lock(&virtq->virtq_lock);
+ mlx5_vdpa_virtq_unset(virtq);
+ pthread_mutex_unlock(&virtq->virtq_lock);
}
priv->features = 0;
+ priv->nr_virtqs = 0;
}
int
mlx5_vdpa_virtq_modify(struct mlx5_vdpa_virtq *virtq, int state)
{
struct mlx5_devx_virtq_attr attr = {
- .type = MLX5_VIRTQ_MODIFY_TYPE_STATE,
+ .mod_fields_bitmap = MLX5_VIRTQ_MODIFY_TYPE_STATE,
.state = state ? MLX5_VIRTQ_STATE_RDY :
MLX5_VIRTQ_STATE_SUSPEND,
.queue_index = virtq->index,
return mlx5_devx_cmd_modify_virtq(virtq->virtq, &attr);
}
+int
+mlx5_vdpa_virtq_stop(struct mlx5_vdpa_priv *priv, int index)
+{
+ struct mlx5_vdpa_virtq *virtq = &priv->virtqs[index];
+ int ret;
+
+ if (virtq->stopped || !virtq->configured)
+ return 0;
+ ret = mlx5_vdpa_virtq_modify(virtq, 0);
+ if (ret)
+ return -1;
+ virtq->stopped = true;
+ DRV_LOG(DEBUG, "vid %u virtq %u was stopped.", priv->vid, index);
+ return mlx5_vdpa_virtq_query(priv, index);
+}
+
+int
+mlx5_vdpa_virtq_query(struct mlx5_vdpa_priv *priv, int index)
+{
+ struct mlx5_devx_virtq_attr attr = {0};
+ struct mlx5_vdpa_virtq *virtq = &priv->virtqs[index];
+ int ret;
+
+ if (mlx5_devx_cmd_query_virtq(virtq->virtq, &attr)) {
+ DRV_LOG(ERR, "Failed to query virtq %d.", index);
+ return -1;
+ }
+ DRV_LOG(INFO, "Query vid %d vring %d: hw_available_idx=%d, "
+ "hw_used_index=%d", priv->vid, index,
+ attr.hw_available_index, attr.hw_used_index);
+ ret = rte_vhost_set_vring_base(priv->vid, index,
+ attr.hw_available_index,
+ attr.hw_used_index);
+ if (ret) {
+ DRV_LOG(ERR, "Failed to set virtq %d base.", index);
+ return -1;
+ }
+ if (attr.state == MLX5_VIRTQ_STATE_ERROR)
+ DRV_LOG(WARNING, "vid %d vring %d hw error=%hhu.",
+ priv->vid, index, attr.error_type);
+ return 0;
+}
+
static uint64_t
mlx5_vdpa_hva_to_gpa(struct rte_vhost_memory *mem, uint64_t hva)
{
}
static int
-mlx5_vdpa_virtq_setup(struct mlx5_vdpa_priv *priv,
- struct mlx5_vdpa_virtq *virtq, int index)
+mlx5_vdpa_virtq_sub_objs_prepare(struct mlx5_vdpa_priv *priv,
+ struct mlx5_devx_virtq_attr *attr,
+ struct rte_vhost_vring *vq, int index)
{
- struct rte_vhost_vring vq;
- struct mlx5_devx_virtq_attr attr = {0};
+ struct mlx5_vdpa_virtq *virtq = &priv->virtqs[index];
uint64_t gpa;
int ret;
unsigned int i;
- uint16_t last_avail_idx;
- uint16_t last_used_idx;
+ uint16_t last_avail_idx = 0;
+ uint16_t last_used_idx = 0;
- ret = rte_vhost_get_vhost_vring(priv->vid, index, &vq);
- if (ret)
- return -1;
- virtq->index = index;
- virtq->vq_size = vq.size;
- attr.tso_ipv4 = !!(priv->features & (1ULL << VIRTIO_NET_F_HOST_TSO4));
- attr.tso_ipv6 = !!(priv->features & (1ULL << VIRTIO_NET_F_HOST_TSO6));
- attr.tx_csum = !!(priv->features & (1ULL << VIRTIO_NET_F_CSUM));
- attr.rx_csum = !!(priv->features & (1ULL << VIRTIO_NET_F_GUEST_CSUM));
- attr.virtio_version_1_0 = !!(priv->features & (1ULL <<
- VIRTIO_F_VERSION_1));
- attr.type = (priv->features & (1ULL << VIRTIO_F_RING_PACKED)) ?
+ if (virtq->virtq)
+ attr->mod_fields_bitmap = MLX5_VIRTQ_MODIFY_TYPE_STATE |
+ MLX5_VIRTQ_MODIFY_TYPE_ADDR |
+ MLX5_VIRTQ_MODIFY_TYPE_HW_AVAILABLE_INDEX |
+ MLX5_VIRTQ_MODIFY_TYPE_HW_USED_INDEX |
+ MLX5_VIRTQ_MODIFY_TYPE_VERSION_1_0 |
+ MLX5_VIRTQ_MODIFY_TYPE_Q_TYPE |
+ MLX5_VIRTQ_MODIFY_TYPE_Q_MKEY |
+ MLX5_VIRTQ_MODIFY_TYPE_QUEUE_FEATURE_BIT_MASK |
+ MLX5_VIRTQ_MODIFY_TYPE_EVENT_MODE;
+ attr->tso_ipv4 = !!(priv->features & (1ULL << VIRTIO_NET_F_HOST_TSO4));
+ attr->tso_ipv6 = !!(priv->features & (1ULL << VIRTIO_NET_F_HOST_TSO6));
+ attr->tx_csum = !!(priv->features & (1ULL << VIRTIO_NET_F_CSUM));
+ attr->rx_csum = !!(priv->features & (1ULL << VIRTIO_NET_F_GUEST_CSUM));
+ attr->virtio_version_1_0 =
+ !!(priv->features & (1ULL << VIRTIO_F_VERSION_1));
+ attr->q_type =
+ (priv->features & (1ULL << VIRTIO_F_RING_PACKED)) ?
MLX5_VIRTQ_TYPE_PACKED : MLX5_VIRTQ_TYPE_SPLIT;
/*
* No need event QPs creation when the guest in poll mode or when the
* capability allows it.
*/
- attr.event_mode = vq.callfd != -1 || !(priv->caps.event_mode & (1 <<
- MLX5_VIRTQ_EVENT_MODE_NO_MSIX)) ?
- MLX5_VIRTQ_EVENT_MODE_QP :
- MLX5_VIRTQ_EVENT_MODE_NO_MSIX;
- if (attr.event_mode == MLX5_VIRTQ_EVENT_MODE_QP) {
- ret = mlx5_vdpa_event_qp_create(priv, vq.size, vq.callfd,
- &virtq->eqp);
+ attr->event_mode = vq->callfd != -1 ||
+ !(priv->caps.event_mode & (1 << MLX5_VIRTQ_EVENT_MODE_NO_MSIX)) ?
+ MLX5_VIRTQ_EVENT_MODE_QP : MLX5_VIRTQ_EVENT_MODE_NO_MSIX;
+ if (attr->event_mode == MLX5_VIRTQ_EVENT_MODE_QP) {
+ ret = mlx5_vdpa_event_qp_prepare(priv,
+ vq->size, vq->callfd, virtq);
if (ret) {
- DRV_LOG(ERR, "Failed to create event QPs for virtq %d.",
+ DRV_LOG(ERR,
+ "Failed to create event QPs for virtq %d.",
index);
return -1;
}
- attr.qp_id = virtq->eqp.fw_qp->id;
+ attr->mod_fields_bitmap |= MLX5_VIRTQ_MODIFY_TYPE_EVENT_MODE;
+ attr->qp_id = virtq->eqp.fw_qp->id;
} else {
DRV_LOG(INFO, "Virtq %d is, for sure, working by poll mode, no"
" need event QPs and event mechanism.", index);
}
+ if (priv->caps.queue_counters_valid) {
+ if (!virtq->counters)
+ virtq->counters = mlx5_devx_cmd_create_virtio_q_counters
+ (priv->cdev->ctx);
+ if (!virtq->counters) {
+ DRV_LOG(ERR, "Failed to create virtq couners for virtq"
+ " %d.", index);
+ return -1;
+ }
+ attr->counters_obj_id = virtq->counters->id;
+ }
/* Setup 3 UMEMs for each virtq. */
- for (i = 0; i < RTE_DIM(virtq->umems); ++i) {
- virtq->umems[i].size = priv->caps.umems[i].a * vq.size +
- priv->caps.umems[i].b;
- virtq->umems[i].buf = rte_zmalloc(__func__,
- virtq->umems[i].size, 4096);
- if (!virtq->umems[i].buf) {
- DRV_LOG(ERR, "Cannot allocate umem %d memory for virtq"
+ if (virtq->virtq) {
+ for (i = 0; i < RTE_DIM(virtq->umems); ++i) {
+ uint32_t size;
+ void *buf;
+ struct mlx5dv_devx_umem *obj;
+
+ size =
+ priv->caps.umems[i].a * vq->size + priv->caps.umems[i].b;
+ if (virtq->umems[i].size == size &&
+ virtq->umems[i].obj != NULL) {
+ /* Reuse registered memory. */
+ memset(virtq->umems[i].buf, 0, size);
+ goto reuse;
+ }
+ if (virtq->umems[i].obj)
+ claim_zero(mlx5_glue->devx_umem_dereg
+ (virtq->umems[i].obj));
+ if (virtq->umems[i].buf)
+ rte_free(virtq->umems[i].buf);
+ virtq->umems[i].size = 0;
+ virtq->umems[i].obj = NULL;
+ virtq->umems[i].buf = NULL;
+ buf = rte_zmalloc(__func__,
+ size, 4096);
+ if (buf == NULL) {
+ DRV_LOG(ERR, "Cannot allocate umem %d memory for virtq"
" %u.", i, index);
- goto error;
- }
- virtq->umems[i].obj = mlx5_glue->devx_umem_reg(priv->ctx,
- virtq->umems[i].buf,
- virtq->umems[i].size,
- IBV_ACCESS_LOCAL_WRITE);
- if (!virtq->umems[i].obj) {
- DRV_LOG(ERR, "Failed to register umem %d for virtq %u.",
+ return -1;
+ }
+ obj = mlx5_glue->devx_umem_reg(priv->cdev->ctx,
+ buf, size, IBV_ACCESS_LOCAL_WRITE);
+ if (obj == NULL) {
+ DRV_LOG(ERR, "Failed to register umem %d for virtq %u.",
i, index);
- goto error;
+ rte_free(buf);
+ return -1;
+ }
+ virtq->umems[i].size = size;
+ virtq->umems[i].buf = buf;
+ virtq->umems[i].obj = obj;
+reuse:
+ attr->umems[i].id = virtq->umems[i].obj->umem_id;
+ attr->umems[i].offset = 0;
+ attr->umems[i].size = virtq->umems[i].size;
}
- attr.umems[i].id = virtq->umems[i].obj->umem_id;
- attr.umems[i].offset = 0;
- attr.umems[i].size = virtq->umems[i].size;
}
- if (attr.type == MLX5_VIRTQ_TYPE_SPLIT) {
+ if (attr->q_type == MLX5_VIRTQ_TYPE_SPLIT) {
gpa = mlx5_vdpa_hva_to_gpa(priv->vmem,
- (uint64_t)(uintptr_t)vq.desc);
+ (uint64_t)(uintptr_t)vq->desc);
if (!gpa) {
DRV_LOG(ERR, "Failed to get descriptor ring GPA.");
- goto error;
+ return -1;
}
- attr.desc_addr = gpa;
+ attr->desc_addr = gpa;
gpa = mlx5_vdpa_hva_to_gpa(priv->vmem,
- (uint64_t)(uintptr_t)vq.used);
+ (uint64_t)(uintptr_t)vq->used);
if (!gpa) {
DRV_LOG(ERR, "Failed to get GPA for used ring.");
- goto error;
+ return -1;
}
- attr.used_addr = gpa;
+ attr->used_addr = gpa;
gpa = mlx5_vdpa_hva_to_gpa(priv->vmem,
- (uint64_t)(uintptr_t)vq.avail);
+ (uint64_t)(uintptr_t)vq->avail);
if (!gpa) {
DRV_LOG(ERR, "Failed to get GPA for available ring.");
- goto error;
+ return -1;
}
- attr.available_addr = gpa;
- }
- rte_vhost_get_vring_base(priv->vid, index, &last_avail_idx,
- &last_used_idx);
- DRV_LOG(INFO, "vid %d: Init last_avail_idx=%d, last_used_idx=%d for "
- "virtq %d.", priv->vid, last_avail_idx, last_used_idx, index);
- attr.hw_available_index = last_avail_idx;
- attr.hw_used_index = last_used_idx;
- attr.q_size = vq.size;
- attr.mkey = priv->gpa_mkey_index;
- attr.tis_id = priv->tis->id;
- attr.queue_index = index;
- virtq->virtq = mlx5_devx_cmd_create_virtq(priv->ctx, &attr);
+ attr->available_addr = gpa;
+ }
+ ret = rte_vhost_get_vring_base(priv->vid,
+ index, &last_avail_idx, &last_used_idx);
+ if (ret) {
+ last_avail_idx = 0;
+ last_used_idx = 0;
+ DRV_LOG(WARNING, "Couldn't get vring base, idx are set to 0.");
+ } else {
+ DRV_LOG(INFO, "vid %d: Init last_avail_idx=%d, last_used_idx=%d for "
+ "virtq %d.", priv->vid, last_avail_idx,
+ last_used_idx, index);
+ }
+ attr->hw_available_index = last_avail_idx;
+ attr->hw_used_index = last_used_idx;
+ attr->q_size = vq->size;
+ attr->mkey = priv->gpa_mkey_index;
+ attr->tis_id = priv->tiss[(index / 2) % priv->num_lag_ports]->id;
+ attr->queue_index = index;
+ attr->pd = priv->cdev->pdn;
+ attr->hw_latency_mode = priv->hw_latency_mode;
+ attr->hw_max_latency_us = priv->hw_max_latency_us;
+ attr->hw_max_pending_comp = priv->hw_max_pending_comp;
+ if (attr->hw_latency_mode || attr->hw_max_latency_us ||
+ attr->hw_max_pending_comp)
+ attr->mod_fields_bitmap |= MLX5_VIRTQ_MODIFY_TYPE_QUEUE_PERIOD;
+ return 0;
+}
+
+bool
+mlx5_vdpa_is_modify_virtq_supported(struct mlx5_vdpa_priv *priv)
+{
+ return (priv->caps.vnet_modify_ext &&
+ priv->caps.virtio_net_q_addr_modify &&
+ priv->caps.virtio_q_index_modify) ? true : false;
+}
+
+static int
+mlx5_vdpa_virtq_setup(struct mlx5_vdpa_priv *priv, int index)
+{
+ struct mlx5_vdpa_virtq *virtq = &priv->virtqs[index];
+ struct rte_vhost_vring vq;
+ struct mlx5_devx_virtq_attr attr = {0};
+ int ret;
+ uint16_t event_num = MLX5_EVENT_TYPE_OBJECT_CHANGE;
+ uint64_t cookie;
+
+ ret = rte_vhost_get_vhost_vring(priv->vid, index, &vq);
+ if (ret)
+ return -1;
+ if (vq.size == 0)
+ return 0;
virtq->priv = priv;
- if (!virtq->virtq)
+ virtq->stopped = 0;
+ ret = mlx5_vdpa_virtq_sub_objs_prepare(priv, &attr,
+ &vq, index);
+ if (ret) {
+ DRV_LOG(ERR, "Failed to setup update virtq attr %d.",
+ index);
goto error;
- if (mlx5_vdpa_virtq_modify(virtq, 1))
+ }
+ if (!virtq->virtq) {
+ virtq->index = index;
+ virtq->vq_size = vq.size;
+ virtq->virtq = mlx5_devx_cmd_create_virtq(priv->cdev->ctx,
+ &attr);
+ if (!virtq->virtq)
+ goto error;
+ attr.mod_fields_bitmap = MLX5_VIRTQ_MODIFY_TYPE_STATE;
+ }
+ attr.state = MLX5_VIRTQ_STATE_RDY;
+ ret = mlx5_devx_cmd_modify_virtq(virtq->virtq, &attr);
+ if (ret) {
+ DRV_LOG(ERR, "Failed to modify virtq %d.", index);
goto error;
- virtq->enable = 1;
- virtq->priv = priv;
- /* Be sure notifications are not missed during configuration. */
+ }
claim_zero(rte_vhost_enable_guest_notification(priv->vid, index, 1));
+ virtq->configured = 1;
+ rte_spinlock_lock(&priv->db_lock);
rte_write32(virtq->index, priv->virtq_db_addr);
+ rte_spinlock_unlock(&priv->db_lock);
/* Setup doorbell mapping. */
- virtq->intr_handle.fd = vq.kickfd;
- virtq->intr_handle.type = RTE_INTR_HANDLE_EXT;
- if (rte_intr_callback_register(&virtq->intr_handle,
- mlx5_vdpa_virtq_handler, virtq)) {
- virtq->intr_handle.fd = 0;
- DRV_LOG(ERR, "Failed to register virtq %d interrupt.", index);
+ virtq->intr_handle =
+ rte_intr_instance_alloc(RTE_INTR_INSTANCE_F_SHARED);
+ if (virtq->intr_handle == NULL) {
+ DRV_LOG(ERR, "Fail to allocate intr_handle");
+ goto error;
+ }
+
+ if (rte_intr_fd_set(virtq->intr_handle, vq.kickfd))
goto error;
+
+ if (rte_intr_fd_get(virtq->intr_handle) == -1) {
+ DRV_LOG(WARNING, "Virtq %d kickfd is invalid.", index);
} else {
- DRV_LOG(DEBUG, "Register fd %d interrupt for virtq %d.",
- virtq->intr_handle.fd, index);
+ if (rte_intr_type_set(virtq->intr_handle, RTE_INTR_HANDLE_EXT))
+ goto error;
+
+ if (rte_intr_callback_register(virtq->intr_handle,
+ mlx5_vdpa_virtq_kick_handler,
+ virtq)) {
+ (void)rte_intr_fd_set(virtq->intr_handle, -1);
+ DRV_LOG(ERR, "Failed to register virtq %d interrupt.",
+ index);
+ goto error;
+ } else {
+ DRV_LOG(DEBUG, "Register fd %d interrupt for virtq %d.",
+ rte_intr_fd_get(virtq->intr_handle),
+ index);
+ }
+ }
+ /* Subscribe virtq error event. */
+ virtq->version++;
+ cookie = ((uint64_t)virtq->version << 32) + index;
+ ret = mlx5_glue->devx_subscribe_devx_event(priv->err_chnl,
+ virtq->virtq->obj,
+ sizeof(event_num),
+ &event_num, cookie);
+ if (ret) {
+ DRV_LOG(ERR, "Failed to subscribe device %d virtq %d error event.",
+ priv->vid, index);
+ rte_errno = errno;
+ goto error;
}
+ virtq->stopped = false;
+ /* Initial notification to ask Qemu handling completed buffers. */
+ if (virtq->eqp.cq.callfd != -1)
+ eventfd_write(virtq->eqp.cq.callfd, (eventfd_t)1);
+ DRV_LOG(DEBUG, "vid %u virtq %u was created successfully.", priv->vid,
+ index);
return 0;
error:
mlx5_vdpa_virtq_unset(virtq);
if (priv->features & (1ULL << VIRTIO_F_RING_PACKED)) {
if (!(priv->caps.virtio_queue_type & (1 <<
MLX5_VIRTQ_TYPE_PACKED))) {
- DRV_LOG(ERR, "Failed to configur PACKED mode for vdev "
+ DRV_LOG(ERR, "Failed to configure PACKED mode for vdev "
"%d - it was not reported by HW/driver"
" capability.", priv->vid);
return -ENOTSUP;
int
mlx5_vdpa_virtqs_prepare(struct mlx5_vdpa_priv *priv)
{
- struct mlx5_devx_tis_attr tis_attr = {0};
- struct mlx5_vdpa_virtq *virtq;
uint32_t i;
uint16_t nr_vring = rte_vhost_get_vring_num(priv->vid);
int ret = rte_vhost_get_negotiated_features(priv->vid, &priv->features);
+ struct mlx5_vdpa_virtq *virtq;
if (ret || mlx5_vdpa_features_validate(priv)) {
DRV_LOG(ERR, "Failed to configure negotiated features.");
return -1;
}
- priv->var = mlx5_glue->dv_alloc_var(priv->ctx, 0);
- if (!priv->var) {
- DRV_LOG(ERR, "Failed to allocate VAR %u.\n", errno);
- return -1;
+ if ((priv->features & (1ULL << VIRTIO_NET_F_CSUM)) == 0 &&
+ ((priv->features & (1ULL << VIRTIO_NET_F_HOST_TSO4)) > 0 ||
+ (priv->features & (1ULL << VIRTIO_NET_F_HOST_TSO6)) > 0)) {
+ /* Packet may be corrupted if TSO is enabled without CSUM. */
+ DRV_LOG(INFO, "TSO is enabled without CSUM, force CSUM.");
+ priv->features |= (1ULL << VIRTIO_NET_F_CSUM);
}
- /* Always map the entire page. */
- priv->virtq_db_addr = mmap(NULL, priv->var->length, PROT_READ |
- PROT_WRITE, MAP_SHARED, priv->ctx->cmd_fd,
- priv->var->mmap_off);
- if (priv->virtq_db_addr == MAP_FAILED) {
- DRV_LOG(ERR, "Failed to map doorbell page %u.", errno);
- priv->virtq_db_addr = NULL;
- goto error;
- } else {
- DRV_LOG(DEBUG, "VAR address of doorbell mapping is %p.",
- priv->virtq_db_addr);
- }
- priv->td = mlx5_devx_cmd_create_td(priv->ctx);
- if (!priv->td) {
- DRV_LOG(ERR, "Failed to create transport domain.");
- return -rte_errno;
- }
- tis_attr.transport_domain = priv->td->id;
- priv->tis = mlx5_devx_cmd_create_tis(priv->ctx, &tis_attr);
- if (!priv->tis) {
- DRV_LOG(ERR, "Failed to create TIS.");
- goto error;
+ if (nr_vring > priv->caps.max_num_virtio_queues) {
+ DRV_LOG(ERR, "Do not support more than %d virtqs(%d).",
+ (int)priv->caps.max_num_virtio_queues,
+ (int)nr_vring);
+ return -1;
}
+ priv->nr_virtqs = nr_vring;
for (i = 0; i < nr_vring; i++) {
- virtq = rte_zmalloc(__func__, sizeof(*virtq), 0);
- if (!virtq || mlx5_vdpa_virtq_setup(priv, virtq, i)) {
- if (virtq)
- rte_free(virtq);
- goto error;
+ virtq = &priv->virtqs[i];
+ if (virtq->enable) {
+ pthread_mutex_lock(&virtq->virtq_lock);
+ if (mlx5_vdpa_virtq_setup(priv, i)) {
+ pthread_mutex_unlock(&virtq->virtq_lock);
+ goto error;
+ }
+ pthread_mutex_unlock(&virtq->virtq_lock);
}
- SLIST_INSERT_HEAD(&priv->virtq_list, virtq, next);
}
- priv->nr_virtqs = nr_vring;
return 0;
error:
mlx5_vdpa_virtqs_release(priv);
return -1;
}
+
+static int
+mlx5_vdpa_virtq_is_modified(struct mlx5_vdpa_priv *priv,
+ struct mlx5_vdpa_virtq *virtq)
+{
+ struct rte_vhost_vring vq;
+ int ret = rte_vhost_get_vhost_vring(priv->vid, virtq->index, &vq);
+
+ if (ret)
+ return -1;
+ if (vq.size != virtq->vq_size || vq.kickfd !=
+ rte_intr_fd_get(virtq->intr_handle))
+ return 1;
+ if (virtq->eqp.cq.cq_obj.cq) {
+ if (vq.callfd != virtq->eqp.cq.callfd)
+ return 1;
+ } else if (vq.callfd != -1) {
+ return 1;
+ }
+ return 0;
+}
+
+int
+mlx5_vdpa_virtq_enable(struct mlx5_vdpa_priv *priv, int index, int enable)
+{
+ struct mlx5_vdpa_virtq *virtq = &priv->virtqs[index];
+ int ret;
+
+ DRV_LOG(INFO, "Update virtq %d status %sable -> %sable.", index,
+ virtq->enable ? "en" : "dis", enable ? "en" : "dis");
+ if (priv->state == MLX5_VDPA_STATE_PROBED) {
+ virtq->enable = !!enable;
+ return 0;
+ }
+ if (virtq->enable == !!enable) {
+ if (!enable)
+ return 0;
+ ret = mlx5_vdpa_virtq_is_modified(priv, virtq);
+ if (ret < 0) {
+ DRV_LOG(ERR, "Virtq %d modify check failed.", index);
+ return -1;
+ }
+ if (ret == 0)
+ return 0;
+ DRV_LOG(INFO, "Virtq %d was modified, recreate it.", index);
+ }
+ if (virtq->configured) {
+ virtq->enable = 0;
+ if (is_virtq_recvq(virtq->index, priv->nr_virtqs)) {
+ ret = mlx5_vdpa_steer_update(priv);
+ if (ret)
+ DRV_LOG(WARNING, "Failed to disable steering "
+ "for virtq %d.", index);
+ }
+ mlx5_vdpa_virtq_unset(virtq);
+ }
+ if (enable) {
+ ret = mlx5_vdpa_virtq_setup(priv, index);
+ if (ret) {
+ DRV_LOG(ERR, "Failed to setup virtq %d.", index);
+ return ret;
+ }
+ virtq->enable = 1;
+ if (is_virtq_recvq(virtq->index, priv->nr_virtqs)) {
+ ret = mlx5_vdpa_steer_update(priv);
+ if (ret)
+ DRV_LOG(WARNING, "Failed to enable steering "
+ "for virtq %d.", index);
+ }
+ }
+ return 0;
+}
+
+int
+mlx5_vdpa_virtq_stats_get(struct mlx5_vdpa_priv *priv, int qid,
+ struct rte_vdpa_stat *stats, unsigned int n)
+{
+ struct mlx5_vdpa_virtq *virtq = &priv->virtqs[qid];
+ struct mlx5_devx_virtio_q_couners_attr *attr = &virtq->stats;
+ int ret;
+
+ if (!virtq->counters) {
+ DRV_LOG(ERR, "Failed to read virtq %d statistics - virtq "
+ "is invalid.", qid);
+ return -EINVAL;
+ }
+ ret = mlx5_devx_cmd_query_virtio_q_counters(virtq->counters, attr);
+ if (ret) {
+ DRV_LOG(ERR, "Failed to read virtq %d stats from HW.", qid);
+ return ret;
+ }
+ ret = (int)RTE_MIN(n, (unsigned int)MLX5_VDPA_STATS_MAX);
+ if (ret == MLX5_VDPA_STATS_RECEIVED_DESCRIPTORS)
+ return ret;
+ stats[MLX5_VDPA_STATS_RECEIVED_DESCRIPTORS] = (struct rte_vdpa_stat) {
+ .id = MLX5_VDPA_STATS_RECEIVED_DESCRIPTORS,
+ .value = attr->received_desc - virtq->reset.received_desc,
+ };
+ if (ret == MLX5_VDPA_STATS_COMPLETED_DESCRIPTORS)
+ return ret;
+ stats[MLX5_VDPA_STATS_COMPLETED_DESCRIPTORS] = (struct rte_vdpa_stat) {
+ .id = MLX5_VDPA_STATS_COMPLETED_DESCRIPTORS,
+ .value = attr->completed_desc - virtq->reset.completed_desc,
+ };
+ if (ret == MLX5_VDPA_STATS_BAD_DESCRIPTOR_ERRORS)
+ return ret;
+ stats[MLX5_VDPA_STATS_BAD_DESCRIPTOR_ERRORS] = (struct rte_vdpa_stat) {
+ .id = MLX5_VDPA_STATS_BAD_DESCRIPTOR_ERRORS,
+ .value = attr->bad_desc_errors - virtq->reset.bad_desc_errors,
+ };
+ if (ret == MLX5_VDPA_STATS_EXCEED_MAX_CHAIN)
+ return ret;
+ stats[MLX5_VDPA_STATS_EXCEED_MAX_CHAIN] = (struct rte_vdpa_stat) {
+ .id = MLX5_VDPA_STATS_EXCEED_MAX_CHAIN,
+ .value = attr->exceed_max_chain - virtq->reset.exceed_max_chain,
+ };
+ if (ret == MLX5_VDPA_STATS_INVALID_BUFFER)
+ return ret;
+ stats[MLX5_VDPA_STATS_INVALID_BUFFER] = (struct rte_vdpa_stat) {
+ .id = MLX5_VDPA_STATS_INVALID_BUFFER,
+ .value = attr->invalid_buffer - virtq->reset.invalid_buffer,
+ };
+ if (ret == MLX5_VDPA_STATS_COMPLETION_ERRORS)
+ return ret;
+ stats[MLX5_VDPA_STATS_COMPLETION_ERRORS] = (struct rte_vdpa_stat) {
+ .id = MLX5_VDPA_STATS_COMPLETION_ERRORS,
+ .value = attr->error_cqes - virtq->reset.error_cqes,
+ };
+ return ret;
+}
+
+int
+mlx5_vdpa_virtq_stats_reset(struct mlx5_vdpa_priv *priv, int qid)
+{
+ struct mlx5_vdpa_virtq *virtq = &priv->virtqs[qid];
+ int ret;
+
+ if (virtq->counters == NULL) /* VQ not enabled. */
+ return 0;
+ ret = mlx5_devx_cmd_query_virtio_q_counters(virtq->counters,
+ &virtq->reset);
+ if (ret)
+ DRV_LOG(ERR, "Failed to read virtq %d reset stats from HW.",
+ qid);
+ return ret;
+}
git.droids-corp.org / dpdk.git / blobdiff