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authorGerrit Renker <gerrit@erg.abdn.ac.uk>2007-11-28 11:34:53 -0200
committerDavid S. Miller <davem@davemloft.net>2008-01-28 14:55:12 -0800
commitf11135a3442996d78dad99933bfdb90d1f6588d3 (patch)
tree6b10cea26f0551b769097296b7e41f25d6b44f08 /scripts/Kbuild.include
parentf53dc67c5e7babafe239b93a11678b0e05bead51 (diff)
[DCCP]: Dedicated auxiliary states to support passive-close
This adds two auxiliary states to deal with passive closes: * PASSIVE_CLOSE (reached from OPEN via reception of Close) and * PASSIVE_CLOSEREQ (reached from OPEN via reception of CloseReq) as internal intermediate states. These states are used to allow a receiver to process unread data before acknowledging the received connection-termination-request (the Close/CloseReq). Without such support, it will happen that passively-closed sockets enter CLOSED state while there is still unprocessed data in the queue; leading to unexpected and erratic API behaviour. PASSIVE_CLOSE has been mapped into TCPF_CLOSE_WAIT, so that the code will seamlessly work with inet_accept() (which tests for this state). The state names are thanks to Arnaldo, who suggested this naming scheme following an earlier revision of this patch. Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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