From: Maxime Coquelin Date: Fri, 26 Jun 2020 14:04:32 +0000 (+0200) Subject: vhost: replace device ID in vDPA ops X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=81a6b7fe068f64d1381ea4d6fce5088a1bcc7f81;p=dpdk.git vhost: replace device ID in vDPA ops This patch is a preliminary step to get rid of the vDPA device ID. It makes vDPA callbacks to use the vDPA device struct as a reference instead of the ID. Signed-off-by: Maxime Coquelin Acked-by: Adrián Moreno --- diff --git a/drivers/vdpa/ifc/ifcvf_vdpa.c b/drivers/vdpa/ifc/ifcvf_vdpa.c index ac9e218c23..0418f9a07f 100644 --- a/drivers/vdpa/ifc/ifcvf_vdpa.c +++ b/drivers/vdpa/ifc/ifcvf_vdpa.c @@ -55,7 +55,7 @@ struct ifcvf_internal { pthread_t tid; /* thread for notify relay */ int epfd; int vid; - int did; + struct rte_vdpa_device *vdev; uint16_t max_queues; uint64_t features; rte_atomic32_t started; @@ -84,7 +84,7 @@ static pthread_mutex_t internal_list_lock = PTHREAD_MUTEX_INITIALIZER; static void update_used_ring(struct ifcvf_internal *internal, uint16_t qid); static struct internal_list * -find_internal_resource_by_did(int did) +find_internal_resource_by_vdev(struct rte_vdpa_device *vdev) { int found = 0; struct internal_list *list; @@ -92,7 +92,7 @@ find_internal_resource_by_did(int did) pthread_mutex_lock(&internal_list_lock); TAILQ_FOREACH(list, &internal_list, next) { - if (did == list->internal->did) { + if (vdev == list->internal->vdev) { found = 1; break; } @@ -877,14 +877,14 @@ error: static int ifcvf_dev_config(int vid) { - int did; + struct rte_vdpa_device *vdev; struct internal_list *list; struct ifcvf_internal *internal; - did = rte_vhost_get_vdpa_device_id(vid); - list = find_internal_resource_by_did(did); + vdev = rte_vdpa_get_device(rte_vhost_get_vdpa_device_id(vid)); + list = find_internal_resource_by_vdev(vdev); if (list == NULL) { - DRV_LOG(ERR, "Invalid device id: %d", did); + DRV_LOG(ERR, "Invalid vDPA device: %p", vdev); return -1; } @@ -894,7 +894,8 @@ ifcvf_dev_config(int vid) update_datapath(internal); if (rte_vhost_host_notifier_ctrl(vid, true) != 0) - DRV_LOG(NOTICE, "vDPA (%d): software relay is used.", did); + DRV_LOG(NOTICE, "vDPA (%s): software relay is used.", + vdev->device->name); return 0; } @@ -902,14 +903,14 @@ ifcvf_dev_config(int vid) static int ifcvf_dev_close(int vid) { - int did; + struct rte_vdpa_device *vdev; struct internal_list *list; struct ifcvf_internal *internal; - did = rte_vhost_get_vdpa_device_id(vid); - list = find_internal_resource_by_did(did); + vdev = rte_vdpa_get_device(rte_vhost_get_vdpa_device_id(vid)); + list = find_internal_resource_by_vdev(vdev); if (list == NULL) { - DRV_LOG(ERR, "Invalid device id: %d", did); + DRV_LOG(ERR, "Invalid vDPA device: %p", vdev); return -1; } @@ -941,15 +942,15 @@ static int ifcvf_set_features(int vid) { uint64_t features = 0; - int did; + struct rte_vdpa_device *vdev; struct internal_list *list; struct ifcvf_internal *internal; uint64_t log_base = 0, log_size = 0; - did = rte_vhost_get_vdpa_device_id(vid); - list = find_internal_resource_by_did(did); + vdev = rte_vdpa_get_device(rte_vhost_get_vdpa_device_id(vid)); + list = find_internal_resource_by_vdev(vdev); if (list == NULL) { - DRV_LOG(ERR, "Invalid device id: %d", did); + DRV_LOG(ERR, "Invalid vDPA device: %p", vdev); return -1; } @@ -974,13 +975,13 @@ ifcvf_set_features(int vid) static int ifcvf_get_vfio_group_fd(int vid) { - int did; + struct rte_vdpa_device *vdev; struct internal_list *list; - did = rte_vhost_get_vdpa_device_id(vid); - list = find_internal_resource_by_did(did); + vdev = rte_vdpa_get_device(rte_vhost_get_vdpa_device_id(vid)); + list = find_internal_resource_by_vdev(vdev); if (list == NULL) { - DRV_LOG(ERR, "Invalid device id: %d", did); + DRV_LOG(ERR, "Invalid vDPA device: %p", vdev); return -1; } @@ -990,13 +991,13 @@ ifcvf_get_vfio_group_fd(int vid) static int ifcvf_get_vfio_device_fd(int vid) { - int did; + struct rte_vdpa_device *vdev; struct internal_list *list; - did = rte_vhost_get_vdpa_device_id(vid); - list = find_internal_resource_by_did(did); + vdev = rte_vdpa_get_device(rte_vhost_get_vdpa_device_id(vid)); + list = find_internal_resource_by_vdev(vdev); if (list == NULL) { - DRV_LOG(ERR, "Invalid device id: %d", did); + DRV_LOG(ERR, "Invalid vDPA device: %p", vdev); return -1; } @@ -1006,16 +1007,16 @@ ifcvf_get_vfio_device_fd(int vid) static int ifcvf_get_notify_area(int vid, int qid, uint64_t *offset, uint64_t *size) { - int did; + struct rte_vdpa_device *vdev; struct internal_list *list; struct ifcvf_internal *internal; struct vfio_region_info reg = { .argsz = sizeof(reg) }; int ret; - did = rte_vhost_get_vdpa_device_id(vid); - list = find_internal_resource_by_did(did); + vdev = rte_vdpa_get_device(rte_vhost_get_vdpa_device_id(vid)); + list = find_internal_resource_by_vdev(vdev); if (list == NULL) { - DRV_LOG(ERR, "Invalid device id: %d", did); + DRV_LOG(ERR, "Invalid vDPA device: %p", vdev); return -1; } @@ -1036,13 +1037,13 @@ ifcvf_get_notify_area(int vid, int qid, uint64_t *offset, uint64_t *size) } static int -ifcvf_get_queue_num(int did, uint32_t *queue_num) +ifcvf_get_queue_num(struct rte_vdpa_device *vdev, uint32_t *queue_num) { struct internal_list *list; - list = find_internal_resource_by_did(did); + list = find_internal_resource_by_vdev(vdev); if (list == NULL) { - DRV_LOG(ERR, "Invalid device id: %d", did); + DRV_LOG(ERR, "Invalid vDPA device: %p", vdev); return -1; } @@ -1052,13 +1053,13 @@ ifcvf_get_queue_num(int did, uint32_t *queue_num) } static int -ifcvf_get_vdpa_features(int did, uint64_t *features) +ifcvf_get_vdpa_features(struct rte_vdpa_device *vdev, uint64_t *features) { struct internal_list *list; - list = find_internal_resource_by_did(did); + list = find_internal_resource_by_vdev(vdev); if (list == NULL) { - DRV_LOG(ERR, "Invalid device id: %d", did); + DRV_LOG(ERR, "Invalid vDPA device: %p", vdev); return -1; } @@ -1074,8 +1075,10 @@ ifcvf_get_vdpa_features(int did, uint64_t *features) 1ULL << VHOST_USER_PROTOCOL_F_HOST_NOTIFIER | \ 1ULL << VHOST_USER_PROTOCOL_F_LOG_SHMFD) static int -ifcvf_get_protocol_features(int did __rte_unused, uint64_t *features) +ifcvf_get_protocol_features(struct rte_vdpa_device *vdev, uint64_t *features) { + RTE_SET_USED(vdev); + *features = VDPA_SUPPORTED_PROTOCOL_FEATURES; return 0; } @@ -1186,8 +1189,8 @@ ifcvf_pci_probe(struct rte_pci_driver *pci_drv __rte_unused, } internal->sw_lm = sw_fallback_lm; - internal->did = rte_vdpa_register_device(&pci_dev->device, &ifcvf_ops); - if (internal->did < 0) { + internal->vdev = rte_vdpa_register_device(&pci_dev->device, &ifcvf_ops); + if (internal->vdev == NULL) { DRV_LOG(ERR, "failed to register device %s", pci_dev->name); goto error; } @@ -1230,7 +1233,7 @@ ifcvf_pci_remove(struct rte_pci_device *pci_dev) rte_pci_unmap_device(internal->pdev); rte_vfio_container_destroy(internal->vfio_container_fd); - rte_vdpa_unregister_device(internal->did); + rte_vdpa_unregister_device(internal->vdev); pthread_mutex_lock(&internal_list_lock); TAILQ_REMOVE(&internal_list, list, next); diff --git a/drivers/vdpa/mlx5/mlx5_vdpa.c b/drivers/vdpa/mlx5/mlx5_vdpa.c index 7b5ae62bdc..9ea032d57b 100644 --- a/drivers/vdpa/mlx5/mlx5_vdpa.c +++ b/drivers/vdpa/mlx5/mlx5_vdpa.c @@ -50,21 +50,21 @@ static pthread_mutex_t priv_list_lock = PTHREAD_MUTEX_INITIALIZER; int mlx5_vdpa_logtype; static struct mlx5_vdpa_priv * -mlx5_vdpa_find_priv_resource_by_did(int did) +mlx5_vdpa_find_priv_resource_by_vdev(struct rte_vdpa_device *vdev) { struct mlx5_vdpa_priv *priv; int found = 0; pthread_mutex_lock(&priv_list_lock); TAILQ_FOREACH(priv, &priv_list, next) { - if (did == priv->id) { + if (vdev == priv->vdev) { found = 1; break; } } pthread_mutex_unlock(&priv_list_lock); if (!found) { - DRV_LOG(ERR, "Invalid device id: %d.", did); + DRV_LOG(ERR, "Invalid vDPA device: %s.", vdev->device->name); rte_errno = EINVAL; return NULL; } @@ -72,12 +72,13 @@ mlx5_vdpa_find_priv_resource_by_did(int did) } static int -mlx5_vdpa_get_queue_num(int did, uint32_t *queue_num) +mlx5_vdpa_get_queue_num(struct rte_vdpa_device *vdev, uint32_t *queue_num) { - struct mlx5_vdpa_priv *priv = mlx5_vdpa_find_priv_resource_by_did(did); + struct mlx5_vdpa_priv *priv = + mlx5_vdpa_find_priv_resource_by_vdev(vdev); if (priv == NULL) { - DRV_LOG(ERR, "Invalid device id: %d.", did); + DRV_LOG(ERR, "Invalid vDPA device: %s.", vdev->device->name); return -1; } *queue_num = priv->caps.max_num_virtio_queues; @@ -85,12 +86,13 @@ mlx5_vdpa_get_queue_num(int did, uint32_t *queue_num) } static int -mlx5_vdpa_get_vdpa_features(int did, uint64_t *features) +mlx5_vdpa_get_vdpa_features(struct rte_vdpa_device *vdev, uint64_t *features) { - struct mlx5_vdpa_priv *priv = mlx5_vdpa_find_priv_resource_by_did(did); + struct mlx5_vdpa_priv *priv = + mlx5_vdpa_find_priv_resource_by_vdev(vdev); if (priv == NULL) { - DRV_LOG(ERR, "Invalid device id: %d.", did); + DRV_LOG(ERR, "Invalid vDPA device: %s.", vdev->device->name); return -1; } *features = MLX5_VDPA_DEFAULT_FEATURES; @@ -110,12 +112,14 @@ mlx5_vdpa_get_vdpa_features(int did, uint64_t *features) } static int -mlx5_vdpa_get_protocol_features(int did, uint64_t *features) +mlx5_vdpa_get_protocol_features(struct rte_vdpa_device *vdev, + uint64_t *features) { - struct mlx5_vdpa_priv *priv = mlx5_vdpa_find_priv_resource_by_did(did); + struct mlx5_vdpa_priv *priv = + mlx5_vdpa_find_priv_resource_by_vdev(vdev); if (priv == NULL) { - DRV_LOG(ERR, "Invalid device id: %d.", did); + DRV_LOG(ERR, "Invalid vDPA device: %s.", vdev->device->name); return -1; } *features = MLX5_VDPA_PROTOCOL_FEATURES; @@ -125,11 +129,13 @@ mlx5_vdpa_get_protocol_features(int did, uint64_t *features) static int mlx5_vdpa_set_vring_state(int vid, int vring, int state) { - int did = rte_vhost_get_vdpa_device_id(vid); - struct mlx5_vdpa_priv *priv = mlx5_vdpa_find_priv_resource_by_did(did); + struct rte_vdpa_device *vdev = rte_vdpa_get_device( + rte_vhost_get_vdpa_device_id(vid)); + struct mlx5_vdpa_priv *priv = + mlx5_vdpa_find_priv_resource_by_vdev(vdev); if (priv == NULL) { - DRV_LOG(ERR, "Invalid device id: %d.", did); + DRV_LOG(ERR, "Invalid vDPA device: %s.", vdev->device->name); return -EINVAL; } if (vring >= (int)priv->caps.max_num_virtio_queues * 2) { @@ -165,14 +171,16 @@ mlx5_vdpa_direct_db_prepare(struct mlx5_vdpa_priv *priv) static int mlx5_vdpa_features_set(int vid) { - int did = rte_vhost_get_vdpa_device_id(vid); - struct mlx5_vdpa_priv *priv = mlx5_vdpa_find_priv_resource_by_did(did); + struct rte_vdpa_device *vdev = rte_vdpa_get_device( + rte_vhost_get_vdpa_device_id(vid)); + struct mlx5_vdpa_priv *priv = + mlx5_vdpa_find_priv_resource_by_vdev(vdev); uint64_t log_base, log_size; uint64_t features; int ret; if (priv == NULL) { - DRV_LOG(ERR, "Invalid device id: %d.", did); + DRV_LOG(ERR, "Invalid vDPA device: %s.", vdev->device->name); return -EINVAL; } ret = rte_vhost_get_negotiated_features(vid, &features); @@ -284,12 +292,14 @@ mlx5_vdpa_mtu_set(struct mlx5_vdpa_priv *priv) static int mlx5_vdpa_dev_close(int vid) { - int did = rte_vhost_get_vdpa_device_id(vid); - struct mlx5_vdpa_priv *priv = mlx5_vdpa_find_priv_resource_by_did(did); + struct rte_vdpa_device *vdev = rte_vdpa_get_device( + rte_vhost_get_vdpa_device_id(vid)); + struct mlx5_vdpa_priv *priv = + mlx5_vdpa_find_priv_resource_by_vdev(vdev); int ret = 0; if (priv == NULL) { - DRV_LOG(ERR, "Invalid device id: %d.", did); + DRV_LOG(ERR, "Invalid vDPA device: %s.", vdev->device->name); return -1; } if (priv->configured) @@ -312,11 +322,13 @@ mlx5_vdpa_dev_close(int vid) static int mlx5_vdpa_dev_config(int vid) { - int did = rte_vhost_get_vdpa_device_id(vid); - struct mlx5_vdpa_priv *priv = mlx5_vdpa_find_priv_resource_by_did(did); + struct rte_vdpa_device *vdev = rte_vdpa_get_device( + rte_vhost_get_vdpa_device_id(vid)); + struct mlx5_vdpa_priv *priv = + mlx5_vdpa_find_priv_resource_by_vdev(vdev); if (priv == NULL) { - DRV_LOG(ERR, "Invalid device id: %d.", did); + DRV_LOG(ERR, "Invalid vDPA device: %s.", vdev->device->name); return -EINVAL; } if (priv->configured && mlx5_vdpa_dev_close(vid)) { @@ -325,7 +337,8 @@ mlx5_vdpa_dev_config(int vid) } priv->vid = vid; if (mlx5_vdpa_mtu_set(priv)) - DRV_LOG(WARNING, "MTU cannot be set on device %d.", did); + DRV_LOG(WARNING, "MTU cannot be set on device %s.", + vdev->device->name); if (mlx5_vdpa_pd_create(priv) || mlx5_vdpa_mem_register(priv) || mlx5_vdpa_direct_db_prepare(priv) || mlx5_vdpa_virtqs_prepare(priv) || mlx5_vdpa_steer_setup(priv) || @@ -341,11 +354,13 @@ mlx5_vdpa_dev_config(int vid) static int mlx5_vdpa_get_device_fd(int vid) { - int did = rte_vhost_get_vdpa_device_id(vid); - struct mlx5_vdpa_priv *priv = mlx5_vdpa_find_priv_resource_by_did(did); + struct rte_vdpa_device *vdev = rte_vdpa_get_device( + rte_vhost_get_vdpa_device_id(vid)); + struct mlx5_vdpa_priv *priv = + mlx5_vdpa_find_priv_resource_by_vdev(vdev); if (priv == NULL) { - DRV_LOG(ERR, "Invalid device id: %d.", did); + DRV_LOG(ERR, "Invalid vDPA device: %s.", vdev->device->name); return -EINVAL; } return priv->ctx->cmd_fd; @@ -354,17 +369,19 @@ mlx5_vdpa_get_device_fd(int vid) static int mlx5_vdpa_get_notify_area(int vid, int qid, uint64_t *offset, uint64_t *size) { - int did = rte_vhost_get_vdpa_device_id(vid); - struct mlx5_vdpa_priv *priv = mlx5_vdpa_find_priv_resource_by_did(did); + struct rte_vdpa_device *vdev = rte_vdpa_get_device( + rte_vhost_get_vdpa_device_id(vid)); + struct mlx5_vdpa_priv *priv = + mlx5_vdpa_find_priv_resource_by_vdev(vdev); RTE_SET_USED(qid); if (priv == NULL) { - DRV_LOG(ERR, "Invalid device id: %d.", did); + DRV_LOG(ERR, "Invalid vDPA device: %s.", vdev->device->name); return -EINVAL; } if (!priv->var) { - DRV_LOG(ERR, "VAR was not created for device %d, is the device" - " configured?.", did); + DRV_LOG(ERR, "VAR was not created for device %s, is the device" + " configured?.", vdev->device->name); return -EINVAL; } *offset = priv->var->mmap_off; @@ -373,8 +390,9 @@ mlx5_vdpa_get_notify_area(int vid, int qid, uint64_t *offset, uint64_t *size) } static int -mlx5_vdpa_get_stats_names(int did, struct rte_vdpa_stat_name *stats_names, - unsigned int size) +mlx5_vdpa_get_stats_names(struct rte_vdpa_device *vdev, + struct rte_vdpa_stat_name *stats_names, + unsigned int size) { static const char *mlx5_vdpa_stats_names[MLX5_VDPA_STATS_MAX] = { "received_descriptors", @@ -384,11 +402,12 @@ mlx5_vdpa_get_stats_names(int did, struct rte_vdpa_stat_name *stats_names, "invalid buffer", "completion errors", }; - struct mlx5_vdpa_priv *priv = mlx5_vdpa_find_priv_resource_by_did(did); + struct mlx5_vdpa_priv *priv = + mlx5_vdpa_find_priv_resource_by_vdev(vdev); unsigned int i; if (priv == NULL) { - DRV_LOG(ERR, "Invalid device id: %d.", did); + DRV_LOG(ERR, "Invalid device: %s.", vdev->device->name); return -ENODEV; } if (!stats_names) @@ -401,51 +420,57 @@ mlx5_vdpa_get_stats_names(int did, struct rte_vdpa_stat_name *stats_names, } static int -mlx5_vdpa_get_stats(int did, int qid, struct rte_vdpa_stat *stats, - unsigned int n) +mlx5_vdpa_get_stats(struct rte_vdpa_device *vdev, int qid, + struct rte_vdpa_stat *stats, unsigned int n) { - struct mlx5_vdpa_priv *priv = mlx5_vdpa_find_priv_resource_by_did(did); + struct mlx5_vdpa_priv *priv = + mlx5_vdpa_find_priv_resource_by_vdev(vdev); if (priv == NULL) { - DRV_LOG(ERR, "Invalid device id: %d.", did); + DRV_LOG(ERR, "Invalid device: %s.", vdev->device->name); return -ENODEV; } if (!priv->configured) { - DRV_LOG(ERR, "Device %d was not configured.", did); + DRV_LOG(ERR, "Device %s was not configured.", + vdev->device->name); return -ENODATA; } if (qid >= (int)priv->nr_virtqs) { - DRV_LOG(ERR, "Too big vring id: %d.", qid); + DRV_LOG(ERR, "Too big vring id: %d for device %s.", qid, + vdev->device->name); return -E2BIG; } if (!priv->caps.queue_counters_valid) { - DRV_LOG(ERR, "Virtq statistics is not supported for device %d.", - did); + DRV_LOG(ERR, "Virtq statistics is not supported for device %s.", + vdev->device->name); return -ENOTSUP; } return mlx5_vdpa_virtq_stats_get(priv, qid, stats, n); } static int -mlx5_vdpa_reset_stats(int did, int qid) +mlx5_vdpa_reset_stats(struct rte_vdpa_device *vdev, int qid) { - struct mlx5_vdpa_priv *priv = mlx5_vdpa_find_priv_resource_by_did(did); + struct mlx5_vdpa_priv *priv = + mlx5_vdpa_find_priv_resource_by_vdev(vdev); if (priv == NULL) { - DRV_LOG(ERR, "Invalid device id: %d.", did); + DRV_LOG(ERR, "Invalid device: %s.", vdev->device->name); return -ENODEV; } if (!priv->configured) { - DRV_LOG(ERR, "Device %d was not configured.", did); + DRV_LOG(ERR, "Device %s was not configured.", + vdev->device->name); return -ENODATA; } if (qid >= (int)priv->nr_virtqs) { - DRV_LOG(ERR, "Too big vring id: %d.", qid); + DRV_LOG(ERR, "Too big vring id: %d for device %s.", qid, + vdev->device->name); return -E2BIG; } if (!priv->caps.queue_counters_valid) { - DRV_LOG(ERR, "Virtq statistics is not supported for device %d.", - did); + DRV_LOG(ERR, "Virtq statistics is not supported for device %s.", + vdev->device->name); return -ENOTSUP; } return mlx5_vdpa_virtq_stats_reset(priv, qid); @@ -687,8 +712,9 @@ mlx5_vdpa_pci_probe(struct rte_pci_driver *pci_drv __rte_unused, DRV_LOG(ERR, "Failed to allocate VAR %u.\n", errno); goto error; } - priv->id = rte_vdpa_register_device(&pci_dev->device, &mlx5_vdpa_ops); - if (priv->id < 0) { + priv->vdev = rte_vdpa_register_device(&pci_dev->device, + &mlx5_vdpa_ops); + if (priv->vdev == NULL) { DRV_LOG(ERR, "Failed to register vDPA device."); rte_errno = rte_errno ? rte_errno : EINVAL; goto error; diff --git a/drivers/vdpa/mlx5/mlx5_vdpa.h b/drivers/vdpa/mlx5/mlx5_vdpa.h index 5fc801eff3..ea09576c5a 100644 --- a/drivers/vdpa/mlx5/mlx5_vdpa.h +++ b/drivers/vdpa/mlx5/mlx5_vdpa.h @@ -103,7 +103,7 @@ struct mlx5_vdpa_priv { TAILQ_ENTRY(mlx5_vdpa_priv) next; uint8_t configured; uint8_t direct_notifier; /* Whether direct notifier is on or off. */ - int id; /* vDPA device id. */ + struct rte_vdpa_device *vdev; /* vDPA device. */ int vid; /* vhost device id. */ struct ibv_context *ctx; /* Device context. */ struct rte_pci_device *pci_dev; diff --git a/examples/vdpa/main.c b/examples/vdpa/main.c index e72f6646e7..bdb00603cc 100644 --- a/examples/vdpa/main.c +++ b/examples/vdpa/main.c @@ -291,13 +291,13 @@ static void cmd_list_vdpa_devices_parsed( vdev = rte_vdpa_get_device(did); if (!vdev) continue; - if (vdev->ops->get_queue_num(did, &queue_num) < 0) { + if (vdev->ops->get_queue_num(vdev, &queue_num) < 0) { RTE_LOG(ERR, VDPA, "failed to get vdpa queue number " "for device id %d.\n", did); continue; } - if (vdev->ops->get_features(did, &features) < 0) { + if (vdev->ops->get_features(vdev, &features) < 0) { RTE_LOG(ERR, VDPA, "failed to get vdpa features " "for device id %d.\n", did); diff --git a/lib/librte_vhost/rte_vdpa.h b/lib/librte_vhost/rte_vdpa.h index b752dfeb96..109cf83b8f 100644 --- a/lib/librte_vhost/rte_vdpa.h +++ b/lib/librte_vhost/rte_vdpa.h @@ -21,6 +21,8 @@ /** Maximum name length for statistics counters */ #define RTE_VDPA_STATS_NAME_SIZE 64 +struct rte_vdpa_device; + /** * A vDPA device statistic structure * @@ -51,13 +53,14 @@ struct rte_vdpa_stat_name { */ struct rte_vdpa_dev_ops { /** Get capabilities of this device */ - int (*get_queue_num)(int did, uint32_t *queue_num); + int (*get_queue_num)(struct rte_vdpa_device *dev, uint32_t *queue_num); /** Get supported features of this device */ - int (*get_features)(int did, uint64_t *features); + int (*get_features)(struct rte_vdpa_device *dev, uint64_t *features); /** Get supported protocol features of this device */ - int (*get_protocol_features)(int did, uint64_t *protocol_features); + int (*get_protocol_features)(struct rte_vdpa_device *dev, + uint64_t *protocol_features); /** Driver configure/close the device */ int (*dev_conf)(int vid); @@ -83,15 +86,16 @@ struct rte_vdpa_dev_ops { uint64_t *offset, uint64_t *size); /** Get statistics name */ - int (*get_stats_names)(int did, struct rte_vdpa_stat_name *stats_names, - unsigned int size); + int (*get_stats_names)(struct rte_vdpa_device *dev, + struct rte_vdpa_stat_name *stats_names, + unsigned int size); /** Get statistics of the queue */ - int (*get_stats)(int did, int qid, struct rte_vdpa_stat *stats, - unsigned int n); + int (*get_stats)(struct rte_vdpa_device *dev, int qid, + struct rte_vdpa_stat *stats, unsigned int n); /** Reset statistics of the queue */ - int (*reset_stats)(int did, int qid); + int (*reset_stats)(struct rte_vdpa_device *dev, int qid); /** Reserved for future extension */ void *reserved[2]; @@ -118,10 +122,10 @@ struct rte_vdpa_device { * @param ops * the vdpa device operations * @return - * device id on success, -1 on failure + * vDPA device pointer on success, NULL on failure */ __rte_experimental -int +struct rte_vdpa_device * rte_vdpa_register_device(struct rte_device *rte_dev, struct rte_vdpa_dev_ops *ops); @@ -132,13 +136,13 @@ rte_vdpa_register_device(struct rte_device *rte_dev, * Unregister a vdpa device * * @param did - * vdpa device id + * vDPA device pointer * @return * device id on success, -1 on failure */ __rte_experimental int -rte_vdpa_unregister_device(int did); +rte_vdpa_unregister_device(struct rte_vdpa_device *); /** * @warning diff --git a/lib/librte_vhost/socket.c b/lib/librte_vhost/socket.c index 0a66ef9767..da575b608c 100644 --- a/lib/librte_vhost/socket.c +++ b/lib/librte_vhost/socket.c @@ -712,7 +712,7 @@ rte_vhost_driver_get_features(const char *path, uint64_t *features) goto unlock_exit; } - if (vdpa_dev->ops->get_features(did, &vdpa_features) < 0) { + if (vdpa_dev->ops->get_features(vdpa_dev, &vdpa_features) < 0) { VHOST_LOG_CONFIG(ERR, "failed to get vdpa features " "for socket file %s.\n", path); @@ -767,7 +767,7 @@ rte_vhost_driver_get_protocol_features(const char *path, goto unlock_exit; } - if (vdpa_dev->ops->get_protocol_features(did, + if (vdpa_dev->ops->get_protocol_features(vdpa_dev, &vdpa_protocol_features) < 0) { VHOST_LOG_CONFIG(ERR, "failed to get vdpa protocol features " @@ -809,7 +809,7 @@ rte_vhost_driver_get_queue_num(const char *path, uint32_t *queue_num) goto unlock_exit; } - if (vdpa_dev->ops->get_queue_num(did, &vdpa_queue_num) < 0) { + if (vdpa_dev->ops->get_queue_num(vdpa_dev, &vdpa_queue_num) < 0) { VHOST_LOG_CONFIG(ERR, "failed to get vdpa queue number " "for socket file %s.\n", path); diff --git a/lib/librte_vhost/vdpa.c b/lib/librte_vhost/vdpa.c index 87334c88c0..49ada00277 100644 --- a/lib/librte_vhost/vdpa.c +++ b/lib/librte_vhost/vdpa.c @@ -18,52 +18,6 @@ static struct rte_vdpa_device vdpa_devices[MAX_VHOST_DEVICE]; static uint32_t vdpa_device_num; -int -rte_vdpa_register_device(struct rte_device *rte_dev, - struct rte_vdpa_dev_ops *ops) -{ - struct rte_vdpa_device *dev; - int i; - - if (vdpa_device_num >= MAX_VHOST_DEVICE || ops == NULL) - return -1; - - for (i = 0; i < MAX_VHOST_DEVICE; i++) { - dev = &vdpa_devices[i]; - if (dev->ops == NULL) - continue; - - if (dev->device == rte_dev) - return -1; - } - - for (i = 0; i < MAX_VHOST_DEVICE; i++) { - if (vdpa_devices[i].ops == NULL) - break; - } - - if (i == MAX_VHOST_DEVICE) - return -1; - - dev = &vdpa_devices[i]; - dev->device = rte_dev; - dev->ops = ops; - vdpa_device_num++; - - return i; -} - -int -rte_vdpa_unregister_device(int did) -{ - if (did < 0 || did >= MAX_VHOST_DEVICE || vdpa_devices[did].ops == NULL) - return -1; - - memset(&vdpa_devices[did], 0, sizeof(struct rte_vdpa_device)); - vdpa_device_num--; - - return did; -} int rte_vdpa_find_device_id(struct rte_vdpa_device *dev) @@ -116,6 +70,55 @@ rte_vdpa_get_device(int did) return &vdpa_devices[did]; } +struct rte_vdpa_device * +rte_vdpa_register_device(struct rte_device *rte_dev, + struct rte_vdpa_dev_ops *ops) +{ + struct rte_vdpa_device *dev; + int i; + + if (vdpa_device_num >= MAX_VHOST_DEVICE || ops == NULL) + return NULL; + + for (i = 0; i < MAX_VHOST_DEVICE; i++) { + dev = &vdpa_devices[i]; + if (dev->ops == NULL) + continue; + + if (dev->device == rte_dev) + return NULL; + } + + for (i = 0; i < MAX_VHOST_DEVICE; i++) { + if (vdpa_devices[i].ops == NULL) + break; + } + + if (i == MAX_VHOST_DEVICE) + return NULL; + + dev = &vdpa_devices[i]; + dev->device = rte_dev; + dev->ops = ops; + vdpa_device_num++; + + return dev; +} + +int +rte_vdpa_unregister_device(struct rte_vdpa_device *vdev) +{ + int did = rte_vdpa_find_device_id(vdev); + + if (did < 0 || vdpa_devices[did].ops == NULL) + return -1; + + memset(&vdpa_devices[did], 0, sizeof(struct rte_vdpa_device)); + vdpa_device_num--; + + return 0; +} + int rte_vdpa_get_device_num(void) { @@ -236,7 +239,7 @@ rte_vdpa_get_stats_names(int did, struct rte_vdpa_stat_name *stats_names, RTE_FUNC_PTR_OR_ERR_RET(vdpa_dev->ops->get_stats_names, -ENOTSUP); - return vdpa_dev->ops->get_stats_names(did, stats_names, size); + return vdpa_dev->ops->get_stats_names(vdpa_dev, stats_names, size); } int @@ -254,7 +257,7 @@ rte_vdpa_get_stats(int did, uint16_t qid, struct rte_vdpa_stat *stats, RTE_FUNC_PTR_OR_ERR_RET(vdpa_dev->ops->get_stats, -ENOTSUP); - return vdpa_dev->ops->get_stats(did, qid, stats, n); + return vdpa_dev->ops->get_stats(vdpa_dev, qid, stats, n); } int @@ -268,7 +271,7 @@ rte_vdpa_reset_stats(int did, uint16_t qid) RTE_FUNC_PTR_OR_ERR_RET(vdpa_dev->ops->reset_stats, -ENOTSUP); - return vdpa_dev->ops->reset_stats(did, qid); + return vdpa_dev->ops->reset_stats(vdpa_dev, qid); } static uint16_t