ipv4: Kill ip_rt_frag_needed().

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There is zero point to this function.

It's only real substance is to perform an extremely outdated BSD4.2
ICMP check, which we can safely remove.  If you really have a MTU
limited link being routed by a BSD4.2 derived system, here's a nickel
go buy yourself a real router.

The other actions of ip_rt_frag_needed(), checking and conditionally
updating the peer, are done by the per-protocol handlers of the ICMP
event.

TCP, UDP, et al. have a handler which will receive this event and
transmit it back into the associated route via dst_ops->update_pmtu().

This simplification is important, because it eliminates the one place
where we do not have a proper route context in which to make an
inetpeer lookup.

Signed-off-by: David S. Miller <davem@davemloft.net>

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This commit is contained in:

David S. Miller 2012-06-10 00:04:12 -07:00

parent 97bab73f98

commit 46517008e1

4 changed files with 1 additions and 70 deletions

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2

include/net/route.h

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4

net/ipv4/icmp.c

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61

net/ipv4/route.c

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4

net/rxrpc/ar-error.c

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