linux/net/dccp
Eric Dumazet 5ea8ea2cb7 tcp/dccp: drop SYN packets if accept queue is full
Per listen(fd, backlog) rules, there is really no point accepting a SYN,
sending a SYNACK, and dropping the following ACK packet if accept queue
is full, because application is not draining accept queue fast enough.

This behavior is fooling TCP clients that believe they established a
flow, while there is nothing at server side. They might then send about
10 MSS (if using IW10) that will be dropped anyway while server is under
stress.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-29 15:09:21 -04:00
..
ccids
ackvec.c
ackvec.h
ccid.c
ccid.h
dccp.h net: snmp: kill STATS_BH macros 2016-04-27 22:48:25 -04:00
diag.c
feat.c
feat.h
input.c dccp: do not assume DCCP code is non preemptible 2016-05-02 17:02:25 -04:00
ipv4.c tcp/dccp: drop SYN packets if accept queue is full 2016-10-29 15:09:21 -04:00
ipv6.c tcp/dccp: drop SYN packets if accept queue is full 2016-10-29 15:09:21 -04:00
ipv6.h
Kconfig
Makefile
minisocks.c dccp: rename DCCP_INC_STATS_BH() 2016-04-27 22:48:22 -04:00
options.c dccp: do not assume DCCP code is non preemptible 2016-05-02 17:02:25 -04:00
output.c
probe.c
proto.c
qpolicy.c
sysctl.c
timer.c net: rename NET_{ADD|INC}_STATS_BH() 2016-04-27 22:48:24 -04:00