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linux/net/dccp
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Eric Dumazet 4bdc3d6614 tcp/dccp: fix behavior of stale SYN_RECV request sockets 
When a TCP/DCCP listener is closed, its pending SYN_RECV request sockets
become stale, meaning 3WHS can not complete.

But current behavior is wrong :
incoming packets finding such stale sockets are dropped.

We need instead to cleanup the request socket and perform another
lookup :
- Incoming ACK will give a RST answer,
- SYN rtx might find another listener if available.
- We expedite cleanup of request sockets and old listener socket.

Fixes: 079096f103 ("tcp/dccp: install syn_recv requests into ehash table")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-13 18:26:34 -07:00
..
ccids dccp: re-enable debug macro 2014-02-16 23:45:00 -05:00
ackvec.c dccp: drop null test before destroy functions 2015-09-15 16:49:43 -07:00
ackvec.h
ccid.c dccp: drop null test before destroy functions 2015-09-15 16:49:43 -07:00
ccid.h
dccp.h net/dccp: dccp_bad_service_code can be boolean 2015-10-09 07:49:03 -07:00
diag.c sock_diag: specify info_size per inet protocol 2015-06-15 19:49:22 -07:00
feat.c dccp: kerneldoc warning fixes 2014-11-18 15:26:31 -05:00
feat.h
input.c dccp: spelling s/reseting/resetting 2014-11-18 15:26:32 -05:00
ipv4.c tcp/dccp: fix behavior of stale SYN_RECV request sockets 2015-10-13 18:26:34 -07:00
ipv6.c tcp/dccp: fix behavior of stale SYN_RECV request sockets 2015-10-13 18:26:34 -07:00
ipv6.h
Kconfig
Makefile
minisocks.c dccp: constify dccp_create_openreq_child() sock argument 2015-09-29 16:53:08 -07:00
options.c dccp: remove obsolete code 2014-01-04 20:18:49 -05:00
output.c dccp: constify dccp_make_response() socket argument 2015-09-25 13:00:39 -07:00
probe.c net: Remove iocb argument from sendmsg and recvmsg 2015-03-02 13:06:31 -05:00
proto.c tcp: fix recv with flags MSG_WAITALL | MSG_PEEK 2015-07-27 01:06:53 -07:00
qpolicy.c
sysctl.c dccp: make the request_retries minimum is 1 2014-05-14 15:34:16 -04:00
timer.c inet: get rid of central tcp/dccp listener timer 2015-03-20 12:40:25 -04:00