3 files changed, 49 insertions, 12 deletions

diff --git a/drivers/infiniband/core/addr.c b/drivers/infiniband/core/addr.c
index 60d3fbdd216c..e11187ecc931 100644
--- a/drivers/infiniband/core/addr.c
+++ b/drivers/infiniband/core/addr.c
@@ -47,6 +47,7 @@ struct addr_req {
         struct sockaddr src_addr;
         struct sockaddr dst_addr;
         struct rdma_dev_addr *addr;
+        struct rdma_addr_client *client;
         void *context;
         void (*callback)(int status, struct sockaddr *src_addr,
                          struct rdma_dev_addr *addr, void *context);
@@ -61,6 +62,26 @@ static LIST_HEAD(req_list);
 static DECLARE_WORK(work, process_req, NULL);
 static struct workqueue_struct *addr_wq;
 
+void rdma_addr_register_client(struct rdma_addr_client *client)
+{
+        atomic_set(&client->refcount, 1);
+        init_completion(&client->comp);
+}
+EXPORT_SYMBOL(rdma_addr_register_client);
+
+static inline void put_client(struct rdma_addr_client *client)
+{
+        if (atomic_dec_and_test(&client->refcount))
+                complete(&client->comp);
+}
+
+void rdma_addr_unregister_client(struct rdma_addr_client *client)
+{
+        put_client(client);
+        wait_for_completion(&client->comp);
+}
+EXPORT_SYMBOL(rdma_addr_unregister_client);
+
 int rdma_copy_addr(struct rdma_dev_addr *dev_addr, struct net_device *dev,
                      const unsigned char *dst_dev_addr)
 {
@@ -229,6 +250,7 @@ static void process_req(void *data)
                 list_del(&req->list);
                 req->callback(req->status, &req->src_addr, req->addr,
                               req->context);
+                put_client(req->client);
                 kfree(req);
         }
 }
@@ -264,7 +286,8 @@ static int addr_resolve_local(struct sockaddr_in *src_in,
         return ret;
 }
 
-int rdma_resolve_ip(struct sockaddr *src_addr, struct sockaddr *dst_addr,
+int rdma_resolve_ip(struct rdma_addr_client *client,
+                    struct sockaddr *src_addr, struct sockaddr *dst_addr,
                     struct rdma_dev_addr *addr, int timeout_ms,
                     void (*callback)(int status, struct sockaddr *src_addr,
                                      struct rdma_dev_addr *addr, void *context),
@@ -285,6 +308,8 @@ int rdma_resolve_ip(struct sockaddr *src_addr, struct sockaddr *dst_addr,
         req->addr = addr;
         req->callback = callback;
         req->context = context;
+        req->client = client;
+        atomic_inc(&client->refcount);
 
         src_in = (struct sockaddr_in *) &req->src_addr;
         dst_in = (struct sockaddr_in *) &req->dst_addr;
@@ -305,6 +330,7 @@ int rdma_resolve_ip(struct sockaddr *src_addr, struct sockaddr *dst_addr,
                 break;
         default:
                 ret = req->status;
+                atomic_dec(&client->refcount);
                 kfree(req);
                 break;
         }
diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index 9ae4f3a67c70..845090b0859c 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -63,6 +63,7 @@ static struct ib_client cma_client = {
 };
 
 static struct ib_sa_client sa_client;
+static struct rdma_addr_client addr_client;
 static LIST_HEAD(dev_list);
 static LIST_HEAD(listen_any_list);
 static DEFINE_MUTEX(lock);
@@ -1625,8 +1626,8 @@ int rdma_resolve_addr(struct rdma_cm_id *id, struct sockaddr *src_addr,
         if (cma_any_addr(dst_addr))
                 ret = cma_resolve_loopback(id_priv);
         else
-                ret = rdma_resolve_ip(&id->route.addr.src_addr, dst_addr,
-                                      &id->route.addr.dev_addr,
+                ret = rdma_resolve_ip(&addr_client, &id->route.addr.src_addr,
+                                      dst_addr, &id->route.addr.dev_addr,
                                       timeout_ms, addr_handler, id_priv);
         if (ret)
                 goto err;
@@ -1762,22 +1763,29 @@ int rdma_bind_addr(struct rdma_cm_id *id, struct sockaddr *addr)
 
         if (!cma_any_addr(addr)) {
                 ret = rdma_translate_ip(addr, &id->route.addr.dev_addr);
-                if (!ret) {
-                        mutex_lock(&lock);
-                        ret = cma_acquire_dev(id_priv);
-                        mutex_unlock(&lock);
-                }
                 if (ret)
-                        goto err;
+                        goto err1;
+
+                mutex_lock(&lock);
+                ret = cma_acquire_dev(id_priv);
+                mutex_unlock(&lock);
+                if (ret)
+                        goto err1;
         }
 
         memcpy(&id->route.addr.src_addr, addr, ip_addr_size(addr));
         ret = cma_get_port(id_priv);
         if (ret)
-                goto err;
+                goto err2;
 
         return 0;
-err:
+err2:
+        if (!cma_any_addr(addr)) {
+                mutex_lock(&lock);
+                cma_detach_from_dev(id_priv);
+                mutex_unlock(&lock);
+        }
+err1:
         cma_comp_exch(id_priv, CMA_ADDR_BOUND, CMA_IDLE);
         return ret;
 }
@@ -2210,6 +2218,7 @@ static int cma_init(void)
                 return -ENOMEM;
 
         ib_sa_register_client(&sa_client);
+        rdma_addr_register_client(&addr_client);
 
         ret = ib_register_client(&cma_client);
         if (ret)
@@ -2217,6 +2226,7 @@ static int cma_init(void)
         return 0;
 
 err:
+        rdma_addr_unregister_client(&addr_client);
         ib_sa_unregister_client(&sa_client);
         destroy_workqueue(cma_wq);
         return ret;
@@ -2225,6 +2235,7 @@ err:
 static void cma_cleanup(void)
 {
         ib_unregister_client(&cma_client);
+        rdma_addr_unregister_client(&addr_client);
         ib_sa_unregister_client(&sa_client);
         destroy_workqueue(cma_wq);
         idr_destroy(&sdp_ps);
diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
index b72c7f69ca90..743247ec065e 100644
--- a/drivers/infiniband/core/uverbs_cmd.c
+++ b/drivers/infiniband/core/uverbs_cmd.c
@@ -1214,7 +1214,7 @@ ssize_t ib_uverbs_query_qp(struct ib_uverbs_file *file,
         resp.qp_access_flags        = attr->qp_access_flags;
         resp.pkey_index             = attr->pkey_index;
         resp.alt_pkey_index         = attr->alt_pkey_index;
-        resp.en_sqd_async_notify    = attr->en_sqd_async_notify;
+        resp.sq_draining            = attr->sq_draining;
         resp.max_rd_atomic          = attr->max_rd_atomic;
         resp.max_dest_rd_atomic     = attr->max_dest_rd_atomic;
         resp.min_rnr_timer          = attr->min_rnr_timer;