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authorSowmini Varadhan <sowmini.varadhan@oracle.com>2016-11-17 00:29:48 +0300
committerDavid S. Miller <davem@davemloft.net>2016-11-17 21:35:18 +0300
commit315ca6d98ed3fd7abe235637c28dd2f9f0a77795 (patch)
treefa9ba8a7f0e0cb77ee05815175cbba4c42c4c80e /net/rds/tcp_send.c
parentb3e51069627e2b9439757590d7b82be0d22c7779 (diff)
downloadlinux-315ca6d98ed3fd7abe235637c28dd2f9f0a77795.tar.xz
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: Sowmini Varadhan <sowmini.varadhan@oracle.com> Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/rds/tcp_send.c')
-rw-r--r--net/rds/tcp_send.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/net/rds/tcp_send.c b/net/rds/tcp_send.c
index 89d09b481f47..dcf4742083ea 100644
--- a/net/rds/tcp_send.c
+++ b/net/rds/tcp_send.c
@@ -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);