diff options
Diffstat (limited to 'net/rds/ib_cm.c')
| -rw-r--r-- | net/rds/ib_cm.c | 43 |
1 files changed, 27 insertions, 16 deletions
diff --git a/net/rds/ib_cm.c b/net/rds/ib_cm.c index 0532237bd12..f8e40e1a603 100644 --- a/net/rds/ib_cm.c +++ b/net/rds/ib_cm.c @@ -126,9 +126,7 @@ void rds_ib_cm_connect_complete(struct rds_connection *conn, struct rdma_cm_even err = rds_ib_update_ipaddr(rds_ibdev, conn->c_laddr); if (err) printk(KERN_ERR "rds_ib_update_ipaddr failed (%d)\n", err); - err = rds_ib_add_conn(rds_ibdev, conn); - if (err) - printk(KERN_ERR "rds_ib_add_conn failed (%d)\n", err); + rds_ib_add_conn(rds_ibdev, conn); /* If the peer gave us the last packet it saw, process this as if * we had received a regular ACK. */ @@ -616,18 +614,8 @@ void rds_ib_conn_shutdown(struct rds_connection *conn) /* * Move connection back to the nodev list. */ - if (ic->rds_ibdev) { - - spin_lock_irq(&ic->rds_ibdev->spinlock); - BUG_ON(list_empty(&ic->ib_node)); - list_del(&ic->ib_node); - spin_unlock_irq(&ic->rds_ibdev->spinlock); - - spin_lock_irq(&ib_nodev_conns_lock); - list_add_tail(&ic->ib_node, &ib_nodev_conns); - spin_unlock_irq(&ib_nodev_conns_lock); - ic->rds_ibdev = NULL; - } + if (ic->rds_ibdev) + rds_ib_remove_conn(ic->rds_ibdev, conn); ic->i_cm_id = NULL; ic->i_pd = NULL; @@ -648,7 +636,11 @@ void rds_ib_conn_shutdown(struct rds_connection *conn) /* Clear the ACK state */ clear_bit(IB_ACK_IN_FLIGHT, &ic->i_ack_flags); - rds_ib_set_64bit(&ic->i_ack_next, 0); +#ifdef KERNEL_HAS_ATOMIC64 + atomic64_set(&ic->i_ack_next, 0); +#else + ic->i_ack_next = 0; +#endif ic->i_ack_recv = 0; /* Clear flow control state */ @@ -681,6 +673,9 @@ int rds_ib_conn_alloc(struct rds_connection *conn, gfp_t gfp) INIT_LIST_HEAD(&ic->ib_node); mutex_init(&ic->i_recv_mutex); +#ifndef KERNEL_HAS_ATOMIC64 + spin_lock_init(&ic->i_ack_lock); +#endif /* * rds_ib_conn_shutdown() waits for these to be emptied so they @@ -701,11 +696,27 @@ int rds_ib_conn_alloc(struct rds_connection *conn, gfp_t gfp) return 0; } +/* + * Free a connection. Connection must be shut down and not set for reconnect. + */ void rds_ib_conn_free(void *arg) { struct rds_ib_connection *ic = arg; + spinlock_t *lock_ptr; + rdsdebug("ic %p\n", ic); + + /* + * Conn is either on a dev's list or on the nodev list. + * A race with shutdown() or connect() would cause problems + * (since rds_ibdev would change) but that should never happen. + */ + lock_ptr = ic->rds_ibdev ? &ic->rds_ibdev->spinlock : &ib_nodev_conns_lock; + + spin_lock_irq(lock_ptr); list_del(&ic->ib_node); + spin_unlock_irq(lock_ptr); + kfree(ic); } |