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RDS: Add rds_conn_path_connect_if_down() for MP-aware callers

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rds_conn_path_connect_if_down() works on the rds_conn_path
that it is passed. Callers who are not t_m_capable may continue
calling rds_conn_connect_if_down, which will invoke
rds_conn_path_connect_if_down() with the default c_path[0].

Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sowmini Varadhan 2016-06-13 09:44:37 -07:00 committed by David S. Miller
parent 45997e9e2e
commit 3c0a59001a
3 changed files with 14 additions and 8 deletions
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12
net/rds/connection.c
View File

@ -572,11 +572,17 @@ EXPORT_SYMBOL_GPL(rds_conn_drop);
* If the connection is down, trigger a connect. We may have scheduled a
* delayed reconnect however - in this case we should not interfere.
*/
void rds_conn_path_connect_if_down(struct rds_conn_path *cp)
{
if (rds_conn_path_state(cp) == RDS_CONN_DOWN &&
!test_and_set_bit(RDS_RECONNECT_PENDING, &cp->cp_flags))
queue_delayed_work(rds_wq, &cp->cp_conn_w, 0);
}
void rds_conn_connect_if_down(struct rds_connection *conn)
{
if (rds_conn_state(conn) == RDS_CONN_DOWN &&
!test_and_set_bit(RDS_RECONNECT_PENDING, &conn->c_flags))
queue_delayed_work(rds_wq, &conn->c_conn_w, 0);
WARN_ON(conn->c_trans->t_mp_capable);
rds_conn_path_connect_if_down(&conn->c_path[0]);
}
EXPORT_SYMBOL_GPL(rds_conn_connect_if_down);

1
net/rds/rds.h
View File

@ -658,6 +658,7 @@ void rds_conn_destroy(struct rds_connection *conn);
void rds_conn_drop(struct rds_connection *conn);
void rds_conn_path_drop(struct rds_conn_path *cpath);
void rds_conn_connect_if_down(struct rds_connection *conn);
void rds_conn_path_connect_if_down(struct rds_conn_path *cp);
void rds_for_each_conn_info(struct socket *sock, unsigned int len,
struct rds_info_iterator *iter,
struct rds_info_lengths *lens,

9
net/rds/send.c
View File

@ -1088,16 +1088,15 @@ int rds_sendmsg(struct socket *sock, struct msghdr *msg, size_t payload_len)
goto out;
}
rds_conn_connect_if_down(conn);
cpath = &conn->c_path[0];
rds_conn_path_connect_if_down(cpath);
ret = rds_cong_wait(conn->c_fcong, dport, nonblock, rs);
if (ret) {
rs->rs_seen_congestion = 1;
goto out;
}
cpath = &conn->c_path[0];
while (!rds_send_queue_rm(rs, conn, cpath, rm, rs->rs_bound_port,
dport, &queued)) {
rds_stats_inc(s_send_queue_full);
@ -1167,7 +1166,7 @@ rds_send_pong(struct rds_conn_path *cp, __be16 dport)
rm->m_daddr = cp->cp_conn->c_faddr;
rm->data.op_active = 1;
rds_conn_connect_if_down(cp->cp_conn);
rds_conn_path_connect_if_down(cp);
ret = rds_cong_wait(cp->cp_conn->c_fcong, dport, 1, NULL);
if (ret)