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Commit 4e9b551c authored by Sowmini Varadhan's avatar Sowmini Varadhan Committed by David S. Miller
Browse files

RDS: Add rds_send_path_reset() 



rds_send_path_reset() is the path specific version of rds_send_reset()
intended for MP capable callers.

Signed-off-by: default avatarSowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 5e833e02

net/rds/send.c

+22 −17
Original line number Diff line number Diff line
@@ -63,14 +63,14 @@ static void rds_send_remove_from_sock(struct list_head *messages, int status); 
 * Reset the send state.  Callers must ensure that this doesn't race with

 * rds_send_xmit().

 */

void rds_send_reset(struct rds_connection *conn)

static void rds_send_path_reset(struct rds_conn_path *cp)

{

	struct rds_message *rm, *tmp;

	unsigned long flags;



	if (conn->c_xmit_rm) {

		rm = conn->c_xmit_rm;

		conn->c_xmit_rm = NULL;

	if (cp->cp_xmit_rm) {

		rm = cp->cp_xmit_rm;

		cp->cp_xmit_rm = NULL;

		/* Tell the user the RDMA op is no longer mapped by the

		 * transport. This isn't entirely true (it's flushed out

		 * independently) but as the connection is down, there's
@@ -79,26 +79,31 @@ void rds_send_reset(struct rds_connection *conn) 
		rds_message_put(rm);

	}



	conn->c_xmit_sg = 0;

	conn->c_xmit_hdr_off = 0;

	conn->c_xmit_data_off = 0;

	conn->c_xmit_atomic_sent = 0;

	conn->c_xmit_rdma_sent = 0;

	conn->c_xmit_data_sent = 0;

	cp->cp_xmit_sg = 0;

	cp->cp_xmit_hdr_off = 0;

	cp->cp_xmit_data_off = 0;

	cp->cp_xmit_atomic_sent = 0;

	cp->cp_xmit_rdma_sent = 0;

	cp->cp_xmit_data_sent = 0;



	conn->c_map_queued = 0;

	cp->cp_conn->c_map_queued = 0;



	conn->c_unacked_packets = rds_sysctl_max_unacked_packets;

	conn->c_unacked_bytes = rds_sysctl_max_unacked_bytes;

	cp->cp_unacked_packets = rds_sysctl_max_unacked_packets;

	cp->cp_unacked_bytes = rds_sysctl_max_unacked_bytes;



	/* Mark messages as retransmissions, and move them to the send q */

	spin_lock_irqsave(&conn->c_lock, flags);

	list_for_each_entry_safe(rm, tmp, &conn->c_retrans, m_conn_item) {

	spin_lock_irqsave(&cp->cp_lock, flags);

	list_for_each_entry_safe(rm, tmp, &cp->cp_retrans, m_conn_item) {

		set_bit(RDS_MSG_ACK_REQUIRED, &rm->m_flags);

		set_bit(RDS_MSG_RETRANSMITTED, &rm->m_flags);

	}

	list_splice_init(&conn->c_retrans, &conn->c_send_queue);

	spin_unlock_irqrestore(&conn->c_lock, flags);

	list_splice_init(&cp->cp_retrans, &cp->cp_send_queue);

	spin_unlock_irqrestore(&cp->cp_lock, flags);

}



void rds_send_reset(struct rds_connection *conn)

{

	rds_send_path_reset(&conn->c_path[0]);

}

EXPORT_SYMBOL_GPL(rds_send_reset);