eal: add function to create control threads

[dpdk.git] / lib / librte_vhost / socket.c

diff --git a/lib/librte_vhost/socket.c b/lib/librte_vhost/socket.c
index a0a95f9..db9be6a 100644 (file)
--- a/lib/librte_vhost/socket.c
+++ b/lib/librte_vhost/socket.c
@@ -51,6 +51,13 @@ struct vhost_user_socket {
        uint64_t supported_features;
        uint64_t features;
 
+       /*
+        * Device id to identify a specific backend device.
+        * It's set to -1 for the default software implementation.
+        * If valid, one socket can have 1 connection only.
+        */
+       int vdpa_dev_id;
+
        struct vhost_device_ops const *notify_ops;
 };
 
@@ -208,6 +215,8 @@ vhost_user_add_connection(int fd, struct vhost_user_socket *vsocket)
 
        vhost_set_builtin_virtio_net(vid, vsocket->use_builtin_virtio_net);
 
+       vhost_attach_vdpa_device(vid, vsocket->vdpa_dev_id);
+
        if (vsocket->dequeue_zero_copy)
                vhost_enable_dequeue_zero_copy(vid);
 
@@ -467,7 +476,7 @@ vhost_user_reconnect_init(void)
        }
        TAILQ_INIT(&reconn_list.head);
 
-       ret = pthread_create(&reconn_tid, NULL,
+       ret = rte_ctrl_thread_create(&reconn_tid, NULL,
                             vhost_user_client_reconnect, NULL);
        if (ret != 0) {
                RTE_LOG(ERR, VHOST_CONFIG, "failed to create reconnect thread");
@@ -476,7 +485,7 @@ vhost_user_reconnect_init(void)
                                "failed to destroy reconnect mutex");
                }
        } else {
-               snprintf(thread_name, RTE_MAX_THREAD_NAME_LEN,
+               snprintf(thread_name, sizeof(thread_name),
                         "vhost-reconn");
 
                if (rte_thread_setname(reconn_tid, thread_name)) {
@@ -545,6 +554,52 @@ find_vhost_user_socket(const char *path)
        return NULL;
 }
 
+int
+rte_vhost_driver_attach_vdpa_device(const char *path, int did)
+{
+       struct vhost_user_socket *vsocket;
+
+       if (rte_vdpa_get_device(did) == NULL)
+               return -1;
+
+       pthread_mutex_lock(&vhost_user.mutex);
+       vsocket = find_vhost_user_socket(path);
+       if (vsocket)
+               vsocket->vdpa_dev_id = did;
+       pthread_mutex_unlock(&vhost_user.mutex);
+
+       return vsocket ? 0 : -1;
+}
+
+int
+rte_vhost_driver_detach_vdpa_device(const char *path)
+{
+       struct vhost_user_socket *vsocket;
+
+       pthread_mutex_lock(&vhost_user.mutex);
+       vsocket = find_vhost_user_socket(path);
+       if (vsocket)
+               vsocket->vdpa_dev_id = -1;
+       pthread_mutex_unlock(&vhost_user.mutex);
+
+       return vsocket ? 0 : -1;
+}
+
+int
+rte_vhost_driver_get_vdpa_device_id(const char *path)
+{
+       struct vhost_user_socket *vsocket;
+       int did = -1;
+
+       pthread_mutex_lock(&vhost_user.mutex);
+       vsocket = find_vhost_user_socket(path);
+       if (vsocket)
+               did = vsocket->vdpa_dev_id;
+       pthread_mutex_unlock(&vhost_user.mutex);
+
+       return did;
+}
+
 int
 rte_vhost_driver_disable_features(const char *path, uint64_t features)
 {
@@ -613,20 +668,123 @@ int
 rte_vhost_driver_get_features(const char *path, uint64_t *features)
 {
        struct vhost_user_socket *vsocket;
+       uint64_t vdpa_features;
+       struct rte_vdpa_device *vdpa_dev;
+       int did = -1;
+       int ret = 0;
 
        pthread_mutex_lock(&vhost_user.mutex);
        vsocket = find_vhost_user_socket(path);
-       if (vsocket)
+       if (!vsocket) {
+               RTE_LOG(ERR, VHOST_CONFIG,
+                       "socket file %s is not registered yet.\n", path);
+               ret = -1;
+               goto unlock_exit;
+       }
+
+       did = vsocket->vdpa_dev_id;
+       vdpa_dev = rte_vdpa_get_device(did);
+       if (!vdpa_dev || !vdpa_dev->ops->get_features) {
                *features = vsocket->features;
+               goto unlock_exit;
+       }
+
+       if (vdpa_dev->ops->get_features(did, &vdpa_features) < 0) {
+               RTE_LOG(ERR, VHOST_CONFIG,
+                               "failed to get vdpa features "
+                               "for socket file %s.\n", path);
+               ret = -1;
+               goto unlock_exit;
+       }
+
+       *features = vsocket->features & vdpa_features;
+
+unlock_exit:
        pthread_mutex_unlock(&vhost_user.mutex);
+       return ret;
+}
+
+int
+rte_vhost_driver_get_protocol_features(const char *path,
+               uint64_t *protocol_features)
+{
+       struct vhost_user_socket *vsocket;
+       uint64_t vdpa_protocol_features;
+       struct rte_vdpa_device *vdpa_dev;
+       int did = -1;
+       int ret = 0;
 
+       pthread_mutex_lock(&vhost_user.mutex);
+       vsocket = find_vhost_user_socket(path);
        if (!vsocket) {
                RTE_LOG(ERR, VHOST_CONFIG,
                        "socket file %s is not registered yet.\n", path);
-               return -1;
-       } else {
-               return 0;
+               ret = -1;
+               goto unlock_exit;
+       }
+
+       did = vsocket->vdpa_dev_id;
+       vdpa_dev = rte_vdpa_get_device(did);
+       if (!vdpa_dev || !vdpa_dev->ops->get_protocol_features) {
+               *protocol_features = VHOST_USER_PROTOCOL_FEATURES;
+               goto unlock_exit;
+       }
+
+       if (vdpa_dev->ops->get_protocol_features(did,
+                               &vdpa_protocol_features) < 0) {
+               RTE_LOG(ERR, VHOST_CONFIG,
+                               "failed to get vdpa protocol features "
+                               "for socket file %s.\n", path);
+               ret = -1;
+               goto unlock_exit;
        }
+
+       *protocol_features = VHOST_USER_PROTOCOL_FEATURES
+               & vdpa_protocol_features;
+
+unlock_exit:
+       pthread_mutex_unlock(&vhost_user.mutex);
+       return ret;
+}
+
+int
+rte_vhost_driver_get_queue_num(const char *path, uint32_t *queue_num)
+{
+       struct vhost_user_socket *vsocket;
+       uint32_t vdpa_queue_num;
+       struct rte_vdpa_device *vdpa_dev;
+       int did = -1;
+       int ret = 0;
+
+       pthread_mutex_lock(&vhost_user.mutex);
+       vsocket = find_vhost_user_socket(path);
+       if (!vsocket) {
+               RTE_LOG(ERR, VHOST_CONFIG,
+                       "socket file %s is not registered yet.\n", path);
+               ret = -1;
+               goto unlock_exit;
+       }
+
+       did = vsocket->vdpa_dev_id;
+       vdpa_dev = rte_vdpa_get_device(did);
+       if (!vdpa_dev || !vdpa_dev->ops->get_queue_num) {
+               *queue_num = VHOST_MAX_QUEUE_PAIRS;
+               goto unlock_exit;
+       }
+
+       if (vdpa_dev->ops->get_queue_num(did, &vdpa_queue_num) < 0) {
+               RTE_LOG(ERR, VHOST_CONFIG,
+                               "failed to get vdpa queue number "
+                               "for socket file %s.\n", path);
+               ret = -1;
+               goto unlock_exit;
+       }
+
+       *queue_num = RTE_MIN((uint32_t)VHOST_MAX_QUEUE_PAIRS, vdpa_queue_num);
+
+unlock_exit:
+       pthread_mutex_unlock(&vhost_user.mutex);
+       return ret;
 }
 
 /*
@@ -862,8 +1020,8 @@ rte_vhost_driver_start(const char *path)
                        return -1;
                }
 
-               int ret = pthread_create(&fdset_tid, NULL, fdset_event_dispatch,
-                                    &vhost_user.fdset);
+               int ret = rte_ctrl_thread_create(&fdset_tid, NULL,
+                       fdset_event_dispatch, &vhost_user.fdset);
                if (ret != 0) {
                        RTE_LOG(ERR, VHOST_CONFIG,
                                "failed to create fdset handling thread");
@@ -871,7 +1029,7 @@ rte_vhost_driver_start(const char *path)
                        fdset_pipe_uninit(&vhost_user.fdset);
                        return -1;
                } else {
-                       snprintf(thread_name, RTE_MAX_THREAD_NAME_LEN,
+                       snprintf(thread_name, sizeof(thread_name),
                                 "vhost-events");
 
                        if (rte_thread_setname(fdset_tid, thread_name)) {