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| author | Sowmini Varadhan <sowmini.varadhan@oracle.com> | 2016-11-17 00:29:48 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-11-17 21:35:18 +0300 |
| commit | 315ca6d98ed3fd7abe235637c28dd2f9f0a77795 (patch) | |
| tree | fa9ba8a7f0e0cb77ee05815175cbba4c42c4c80e /net | |
| parent | b3e51069627e2b9439757590d7b82be0d22c7779 (diff) | |
| download | linux-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')
| -rw-r--r-- | net/rds/tcp_send.c | 3 |
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); |