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sctp: Disallow new connection on a closing socket

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If a socket has a lot of association that are in the process of
of being closed/aborted, it is possible for a remote to establish
new associations during the time period that the old ones are shutting
down.  If this was a result of a close() call, there will be no socket
and will cause a memory leak.  We'll prevent this by setting the
socket state to CLOSING and disallow new associations when in this state.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
This commit is contained in:
Vlad Yasevich 2009-07-30 18:08:28 -04:00
commit bec9640bb0
3 changed files with 11 additions and 1 deletions
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2
include/net/sctp/constants.h
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@ -231,7 +231,7 @@ typedef enum {
SCTP_SS_LISTENING = TCP_LISTEN,
SCTP_SS_ESTABLISHING = TCP_SYN_SENT,
SCTP_SS_ESTABLISHED = TCP_ESTABLISHED,
SCTP_SS_DISCONNECTING = TCP_CLOSING,
SCTP_SS_CLOSING = TCP_CLOSING,
} sctp_sock_state_t;
/* These functions map various type to printable names. */