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f11135a344
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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