diff options
| author |   Sowmini Varadhan <sowmini.varadhan@oracle.com> | 2018-01-18 13:11:07 -0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-01-22 15:43:54 -0500 |
| commit | b589513e6354a5fd6934823b7fd66bffad41137a (patch) | |
| tree | 0d9e892d669ca556ac5ce566d949aa16ae6f0d9a /net/rds/tcp.c | |
| parent | usbnet: silence an unnecessary warning (diff) | |
| download | wireguard-linux-b589513e6354a5fd6934823b7fd66bffad41137a.tar.xz wireguard-linux-b589513e6354a5fd6934823b7fd66bffad41137a.zip | |
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.c | 5 |
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) |