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| author | Herton R. Krzesinski <herton@redhat.com> | 2014-10-01 18:49:53 -0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-10-03 12:51:59 -0700 |
| commit | eb74cc97b830c1e438dc1d6b049f17bdb2b9aae5 (patch) | |
| tree | f3b45a40a460a4a70ad9436ded5b1daa1da802fc /net/rds | |
| parent | 310886dd5fa3606d9325b10caf7c8ba5e9f9ab03 (diff) | |
| download | op-kernel-dev-eb74cc97b830c1e438dc1d6b049f17bdb2b9aae5.zip op-kernel-dev-eb74cc97b830c1e438dc1d6b049f17bdb2b9aae5.tar.gz | |
net/rds: do proper house keeping if connection fails in rds_tcp_conn_connect
I see two problems if we consider the sock->ops->connect attempt to fail in
rds_tcp_conn_connect. The first issue is that for example we don't remove the
previously added rds_tcp_connection item to rds_tcp_tc_list at
rds_tcp_set_callbacks, which means that on a next reconnect attempt for the
same rds_connection, when rds_tcp_conn_connect is called we can again call
rds_tcp_set_callbacks, resulting in duplicated items on rds_tcp_tc_list,
leading to list corruption: to avoid this just make sure we call
properly rds_tcp_restore_callbacks before we exit. The second issue
is that we should also release the sock properly, by setting sock = NULL
only if we are returning without error.
Signed-off-by: Herton R. Krzesinski <herton@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/rds')
| -rw-r--r-- | net/rds/tcp_connect.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/net/rds/tcp_connect.c b/net/rds/tcp_connect.c index a65ee78..f9f564a 100644 --- a/net/rds/tcp_connect.c +++ b/net/rds/tcp_connect.c @@ -106,11 +106,14 @@ int rds_tcp_conn_connect(struct rds_connection *conn) rds_tcp_set_callbacks(sock, conn); ret = sock->ops->connect(sock, (struct sockaddr *)&dest, sizeof(dest), O_NONBLOCK); - sock = NULL; rdsdebug("connect to address %pI4 returned %d\n", &conn->c_faddr, ret); if (ret == -EINPROGRESS) ret = 0; + if (ret == 0) + sock = NULL; + else + rds_tcp_restore_callbacks(sock, conn->c_transport_data); out: if (sock) |
