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Commit 315ca6d9 authored by Sowmini Varadhan's avatar Sowmini Varadhan Committed by David S. Miller
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RDS: TCP: set RDS_FLAG_RETRANSMITTED in cp_retrans list 



As noted in rds_recv_incoming() sequence numbers on data packets
can decreas for the failover case, and the Rx path is equipped
to recover from this, if the RDS_FLAG_RETRANSMITTED is set
on the rds header of an incoming message with a suspect sequence
number.

The RDS_FLAG_RETRANSMITTED is predicated on the RDS_FLAG_RETRANSMITTED
flag in the rds_message, so make sure the flag is set on messages
queued for retransmission.

Signed-off-by: default avatarSowmini Varadhan <sowmini.varadhan@oracle.com>
Acked-by: default avatarSantosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b3e51069

net/rds/tcp_send.c

+3 −0
Original line number Diff line number Diff line
@@ -100,6 +100,9 @@ int rds_tcp_xmit(struct rds_connection *conn, struct rds_message *rm, 
		set_bit(RDS_MSG_HAS_ACK_SEQ, &rm->m_flags);

		tc->t_last_expected_una = rm->m_ack_seq + 1;



		if (test_bit(RDS_MSG_RETRANSMITTED, &rm->m_flags))

			rm->m_inc.i_hdr.h_flags |= RDS_FLAG_RETRANSMITTED;



		rdsdebug("rm %p tcp nxt %u ack_seq %llu\n",

			 rm, rds_tcp_snd_nxt(tc),

			 (unsigned long long)rm->m_ack_seq);