From: Sowmini Varadhan
Date: Thu, 18 Jan 2018 13:11:07 -0800
> 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 queu
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
