diff options
Diffstat (limited to 'net/rds/connection.c')
| -rw-r--r-- | net/rds/connection.c | 33 |
1 files changed, 23 insertions, 10 deletions
diff --git a/net/rds/connection.c b/net/rds/connection.c index da6da57e5f36..49adeef8090c 100644 --- a/net/rds/connection.c +++ b/net/rds/connection.c @@ -70,7 +70,8 @@ static struct hlist_head *rds_conn_bucket(__be32 laddr, __be32 faddr) } while (0) /* rcu read lock must be held or the connection spinlock */ -static struct rds_connection *rds_conn_lookup(struct hlist_head *head, +static struct rds_connection *rds_conn_lookup(struct net *net, + struct hlist_head *head, __be32 laddr, __be32 faddr, struct rds_transport *trans) { @@ -78,7 +79,7 @@ static struct rds_connection *rds_conn_lookup(struct hlist_head *head, hlist_for_each_entry_rcu(conn, head, c_hash_node) { if (conn->c_faddr == faddr && conn->c_laddr == laddr && - conn->c_trans == trans) { + conn->c_trans == trans && net == rds_conn_net(conn)) { ret = conn; break; } @@ -117,7 +118,8 @@ static void rds_conn_reset(struct rds_connection *conn) * For now they are not garbage collected once they're created. They * are torn down as the module is removed, if ever. */ -static struct rds_connection *__rds_conn_create(__be32 laddr, __be32 faddr, +static struct rds_connection *__rds_conn_create(struct net *net, + __be32 laddr, __be32 faddr, struct rds_transport *trans, gfp_t gfp, int is_outgoing) { @@ -131,7 +133,7 @@ static struct rds_connection *__rds_conn_create(__be32 laddr, __be32 faddr, if (!is_outgoing && otrans->t_type == RDS_TRANS_TCP) goto new_conn; rcu_read_lock(); - conn = rds_conn_lookup(head, laddr, faddr, trans); + conn = rds_conn_lookup(net, head, laddr, faddr, trans); if (conn && conn->c_loopback && conn->c_trans != &rds_loop_transport && laddr == faddr && !is_outgoing) { /* This is a looped back IB connection, and we're @@ -157,6 +159,7 @@ new_conn: conn->c_faddr = faddr; spin_lock_init(&conn->c_lock); conn->c_next_tx_seq = 1; + rds_conn_net_set(conn, net); init_waitqueue_head(&conn->c_waitq); INIT_LIST_HEAD(&conn->c_send_queue); @@ -174,7 +177,7 @@ new_conn: * can bind to the destination address then we'd rather the messages * flow through loopback rather than either transport. */ - loop_trans = rds_trans_get_preferred(faddr); + loop_trans = rds_trans_get_preferred(net, faddr); if (loop_trans) { rds_trans_put(loop_trans); conn->c_loopback = 1; @@ -187,6 +190,12 @@ new_conn: } } + if (trans == NULL) { + kmem_cache_free(rds_conn_slab, conn); + conn = ERR_PTR(-ENODEV); + goto out; + } + conn->c_trans = trans; ret = trans->conn_alloc(conn, gfp); @@ -237,7 +246,7 @@ new_conn: if (!is_outgoing && otrans->t_type == RDS_TRANS_TCP) found = NULL; else - found = rds_conn_lookup(head, laddr, faddr, trans); + found = rds_conn_lookup(net, head, laddr, faddr, trans); if (found) { trans->conn_free(conn->c_transport_data); kmem_cache_free(rds_conn_slab, conn); @@ -260,17 +269,19 @@ out: return conn; } -struct rds_connection *rds_conn_create(__be32 laddr, __be32 faddr, +struct rds_connection *rds_conn_create(struct net *net, + __be32 laddr, __be32 faddr, struct rds_transport *trans, gfp_t gfp) { - return __rds_conn_create(laddr, faddr, trans, gfp, 0); + return __rds_conn_create(net, laddr, faddr, trans, gfp, 0); } EXPORT_SYMBOL_GPL(rds_conn_create); -struct rds_connection *rds_conn_create_outgoing(__be32 laddr, __be32 faddr, +struct rds_connection *rds_conn_create_outgoing(struct net *net, + __be32 laddr, __be32 faddr, struct rds_transport *trans, gfp_t gfp) { - return __rds_conn_create(laddr, faddr, trans, gfp, 1); + return __rds_conn_create(net, laddr, faddr, trans, gfp, 1); } EXPORT_SYMBOL_GPL(rds_conn_create_outgoing); @@ -297,6 +308,8 @@ void rds_conn_shutdown(struct rds_connection *conn) wait_event(conn->c_waitq, !test_bit(RDS_IN_XMIT, &conn->c_flags)); + wait_event(conn->c_waitq, + !test_bit(RDS_RECV_REFILL, &conn->c_flags)); conn->c_trans->conn_shutdown(conn); rds_conn_reset(conn); |