netdev - [PATCH net 0/2] RDS: TCP: connection spamming fixes

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Date:	Wed, 18 May 2016 10:06:22 -0700
From:	Sowmini Varadhan <sowmini.varadhan@...cle.com>
To:	netdev@...r.kernel.org
Cc:	davem@...emloft.net, rds-devel@....oracle.com,
	ajaykumar.hotchandani@...cle.com, sowmini.varadhan@...cle.com,
	santosh.shilimkar@...cle.com
Subject: [PATCH net 0/2] RDS: TCP: connection spamming fixes

We have been testing the RDS-TCP code with a connection spammer
that sends incoming SYNs to the RDS listen port well after 
an rds-tcp connection has been established, and found a few 
race-windows that are fixed by this patch series.

Patch 1 avoids a null pointer deref when an incoming SYN 
shows up when a netns is being dismantled, or when the 
rds-tcp module is being unloaded. 

Patch 2 addresses the case when a SYN is received after the
connection arbitration algorithm has converged: the incoming
SYN should not needlessly quiesce the transmit path, and it
should not result in needless TCP connection resets due to
re-execution of the connection arbitration logic.

Sowmini Varadhan (2):
  RDS: TCP: rds_tcp_accept_worker() must exit gracefully when
    terminating rds-tcp
  RDS: TCP: Avoid rds connection churn from rogue SYNs

 net/rds/tcp_listen.c |   13 +++++++++----
 1 files changed, 9 insertions(+), 4 deletions(-)