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authorSowmini Varadhan <sowmini.varadhan@oracle.com>2016-07-01 02:11:14 +0300
committerDavid S. Miller <davem@davemloft.net>2016-07-01 23:45:17 +0300
commitea3b1ea53930879c9847044f5cb9c97411cae797 (patch)
tree253e822f3d1bd081b791320683663dc4fcf3b9b0 /net/rds/tcp.c
parentafb4164d91c7486a1d4ab098a1b88e27b5e25772 (diff)
downloadlinux-ea3b1ea53930879c9847044f5cb9c97411cae797.tar.xz
RDS: TCP: make ->sk_user_data point to a rds_conn_path
The socket callbacks should all operate on a struct rds_conn_path, in preparation for a MP capable RDS-TCP. Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com> Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/rds/tcp.c')
-rw-r--r--net/rds/tcp.c25
1 files changed, 13 insertions, 12 deletions
diff --git a/net/rds/tcp.c b/net/rds/tcp.c
index b32772759c9d..5658f3e9f601 100644
--- a/net/rds/tcp.c
+++ b/net/rds/tcp.c
@@ -136,9 +136,9 @@ void rds_tcp_restore_callbacks(struct socket *sock,
* from being called while it isn't set.
*/
void rds_tcp_reset_callbacks(struct socket *sock,
- struct rds_connection *conn)
+ struct rds_conn_path *cp)
{
- struct rds_tcp_connection *tc = conn->c_transport_data;
+ struct rds_tcp_connection *tc = cp->cp_transport_data;
struct socket *osock = tc->t_sock;
if (!osock)
@@ -148,8 +148,8 @@ void rds_tcp_reset_callbacks(struct socket *sock,
* We have an outstanding SYN to this peer, which may
* potentially have transitioned to the RDS_CONN_UP state,
* so we must quiesce any send threads before resetting
- * c_transport_data. We quiesce these threads by setting
- * c_state to something other than RDS_CONN_UP, and then
+ * cp_transport_data. We quiesce these threads by setting
+ * cp_state to something other than RDS_CONN_UP, and then
* waiting for any existing threads in rds_send_xmit to
* complete release_in_xmit(). (Subsequent threads entering
* rds_send_xmit() will bail on !rds_conn_up().
@@ -164,8 +164,8 @@ void rds_tcp_reset_callbacks(struct socket *sock,
* RDS_CONN_RESETTTING, to ensure that rds_tcp_state_change
* cannot mark rds_conn_path_up() in the window before lock_sock()
*/
- atomic_set(&conn->c_state, RDS_CONN_RESETTING);
- wait_event(conn->c_waitq, !test_bit(RDS_IN_XMIT, &conn->c_flags));
+ atomic_set(&cp->cp_state, RDS_CONN_RESETTING);
+ wait_event(cp->cp_waitq, !test_bit(RDS_IN_XMIT, &cp->cp_flags));
lock_sock(osock->sk);
/* reset receive side state for rds_tcp_data_recv() for osock */
if (tc->t_tinc) {
@@ -186,11 +186,12 @@ void rds_tcp_reset_callbacks(struct socket *sock,
release_sock(osock->sk);
sock_release(osock);
newsock:
- rds_send_path_reset(&conn->c_path[0]);
+ rds_send_path_reset(cp);
lock_sock(sock->sk);
write_lock_bh(&sock->sk->sk_callback_lock);
tc->t_sock = sock;
- sock->sk->sk_user_data = conn;
+ tc->t_cpath = cp;
+ sock->sk->sk_user_data = cp;
sock->sk->sk_data_ready = rds_tcp_data_ready;
sock->sk->sk_write_space = rds_tcp_write_space;
sock->sk->sk_state_change = rds_tcp_state_change;
@@ -203,9 +204,9 @@ newsock:
* above rds_tcp_reset_callbacks for notes about synchronization
* with data path
*/
-void rds_tcp_set_callbacks(struct socket *sock, struct rds_connection *conn)
+void rds_tcp_set_callbacks(struct socket *sock, struct rds_conn_path *cp)
{
- struct rds_tcp_connection *tc = conn->c_transport_data;
+ struct rds_tcp_connection *tc = cp->cp_transport_data;
rdsdebug("setting sock %p callbacks to tc %p\n", sock, tc);
write_lock_bh(&sock->sk->sk_callback_lock);
@@ -221,12 +222,12 @@ void rds_tcp_set_callbacks(struct socket *sock, struct rds_connection *conn)
sock->sk->sk_data_ready = sock->sk->sk_user_data;
tc->t_sock = sock;
- tc->t_cpath = &conn->c_path[0];
+ tc->t_cpath = cp;
tc->t_orig_data_ready = sock->sk->sk_data_ready;
tc->t_orig_write_space = sock->sk->sk_write_space;
tc->t_orig_state_change = sock->sk->sk_state_change;
- sock->sk->sk_user_data = conn;
+ sock->sk->sk_user_data = cp;
sock->sk->sk_data_ready = rds_tcp_data_ready;
sock->sk->sk_write_space = rds_tcp_write_space;
sock->sk->sk_state_change = rds_tcp_state_change;