[Openhip-cvs] SF.net SVN: openhip:[250] hip/trunk/src

[<sar...@us...>]

Revision: 250
          http://openhip.svn.sourceforge.net/openhip/?rev=250&view=rev
Author:   sarabito
Date:     2012-11-16 04:52:34 +0000 (Fri, 16 Nov 2012)
Log Message:
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In order to tolerate occassional unknown SPIs (e.g. during HIP UPDATES), add tracking for unknown SPIs in hip_esp_input.  This works in conjunction with the icmp_timeout option.  Unknown SPIs are kept in a list along with the time they are seen.  Once icmp_timeout has elapsed, and a subsequent ESP packet with that unknown SPI is received, an icmp packet will be sent to the peer.  Unknown SPIs are expired from this list after icmp_timeout * max_retries seconds has elapsed.  This tracking also has the effect of rate-limiting the icmp packets to once per icmp_timeout.  Note again that packets with the unknown SPI need to be received once to mark the first time received and again after icmp_timeout to actually send the icmp.

Modified Paths:
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    hip/trunk/src/include/hip/hip_types.h
    hip/trunk/src/usermode/hip_esp.c

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