cvs commit: src/sys/netinet tcp_subr.c

Bruce M Simpson bms at spc.org
Wed May 4 07:32:42 PDT 2005


On Wed, May 04, 2005 at 01:48:44PM +0000, Andre Oppermann wrote:
>   Log:
>   If we don't get a suggested MTU during path MTU discovery
>   look up the packet size of the packet that generated the
>   response, step down the MTU by one step through ip_next_mtu()
>   and try again.

Yay! Now I really need to sit down and sort out the gre(4) PMTU story.

Of course a more generic way of doing this might be good, e.g. a generic
PMTU callback for each protocol which needs to exchange this information
with the IP/ICMP layer.

BMS


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