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RDS: Make rds_send_queue_rm() rds_conn_path aware 

Pass the rds_conn_path to rds_send_queue_rm, and use it to initialize
the i_conn_path field in struct rds_incoming. This commit also makes
rds_send_queue_rm() MP capable, because it now takes locks
specific to the rds_conn_path passed in, instead of defaulting to
the c_path[0] based defines from rds_single_path.h

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 09:44:33 -07:00 committed by David S. Miller
parent 7d885d0fc6
commit 780a6d9e16
1 changed files with 11 additions and 6 deletions
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17
net/rds/send.c
View File

@ -787,6 +787,7 @@ void rds_send_drop_to(struct rds_sock *rs, struct sockaddr_in *dest)
* message from the flow with RDS_CANCEL_SENT_TO.
*/
static int rds_send_queue_rm(struct rds_sock *rs, struct rds_connection *conn,
struct rds_conn_path *cp,
struct rds_message *rm, __be16 sport,
__be16 dport, int *queued)
{
@ -830,13 +831,14 @@ static int rds_send_queue_rm(struct rds_sock *rs, struct rds_connection *conn,
trying to minimize the time we hold c_lock */
rds_message_populate_header(&rm->m_inc.i_hdr, sport, dport, 0);
rm->m_inc.i_conn = conn;
rm->m_inc.i_conn_path = cp;
rds_message_addref(rm);
spin_lock(&conn->c_lock);
rm->m_inc.i_hdr.h_sequence = cpu_to_be64(conn->c_next_tx_seq++);
list_add_tail(&rm->m_conn_item, &conn->c_send_queue);
spin_lock(&cp->cp_lock);
rm->m_inc.i_hdr.h_sequence = cpu_to_be64(cp->cp_next_tx_seq++);
list_add_tail(&rm->m_conn_item, &cp->cp_send_queue);
set_bit(RDS_MSG_ON_CONN, &rm->m_flags);
spin_unlock(&conn->c_lock);
spin_unlock(&cp->cp_lock);
rdsdebug("queued msg %p len %d, rs %p bytes %d seq %llu\n",
rm, len, rs, rs->rs_snd_bytes,
@ -968,6 +970,7 @@ int rds_sendmsg(struct socket *sock, struct msghdr *msg, size_t payload_len)
int queued = 0, allocated_mr = 0;
int nonblock = msg->msg_flags & MSG_DONTWAIT;
long timeo = sock_sndtimeo(sk, nonblock);
struct rds_conn_path *cpath;
/* Mirror Linux UDP mirror of BSD error message compatibility */
/* XXX: Perhaps MSG_MORE someday */
@ -1074,7 +1077,9 @@ int rds_sendmsg(struct socket *sock, struct msghdr *msg, size_t payload_len)
goto out;
}
while (!rds_send_queue_rm(rs, conn, rm, rs->rs_bound_port,
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);
@ -1084,7 +1089,7 @@ int rds_sendmsg(struct socket *sock, struct msghdr *msg, size_t payload_len)
}
timeo = wait_event_interruptible_timeout(*sk_sleep(sk),
rds_send_queue_rm(rs, conn, rm,
rds_send_queue_rm(rs, conn, cpath, rm,
rs->rs_bound_port,
dport,
&queued),