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authorSowmini Varadhan <sowmini.varadhan@oracle.com>2018-01-18 13:11:07 -0800
committerDavid S. Miller <davem@davemloft.net>2018-01-22 15:43:54 -0500
commitb589513e6354a5fd6934823b7fd66bffad41137a (patch)
tree0d9e892d669ca556ac5ce566d949aa16ae6f0d9a /net/rds/tcp.c
parentab18a9c9ca27f8208c4960a1b25e8475b9f9dda5 (diff)
rds: tcp: compute m_ack_seq as offset from ->write_seq
rds-tcp uses m_ack_seq to track the tcp ack# that indicates that the peer has received a rds_message. The m_ack_seq is used in rds_tcp_is_acked() to figure out when it is safe to drop the rds_message from the RDS retransmit queue. The m_ack_seq must be calculated as an offset from the right edge of the in-flight tcp buffer, i.e., it should be based on the ->write_seq, not the ->snd_nxt. Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/rds/tcp.c')
-rw-r--r--net/rds/tcp.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/net/rds/tcp.c b/net/rds/tcp.c
index 6b7ee71f40c6..ab7356e0ba83 100644
--- a/net/rds/tcp.c
+++ b/net/rds/tcp.c
@@ -90,9 +90,10 @@ void rds_tcp_nonagle(struct socket *sock)
sizeof(val));
}
-u32 rds_tcp_snd_nxt(struct rds_tcp_connection *tc)
+u32 rds_tcp_write_seq(struct rds_tcp_connection *tc)
{
- return tcp_sk(tc->t_sock->sk)->snd_nxt;
+ /* seq# of the last byte of data in tcp send buffer */
+ return tcp_sk(tc->t_sock->sk)->write_seq;
}
u32 rds_tcp_snd_una(struct rds_tcp_connection *tc)