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| author |   David S. Miller <davem@davemloft.net> | 2012-06-10 00:04:12 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-06-11 02:08:59 -0700 |
| commit | 46517008e1168dc926cf2c47d529efc07eca85c0 (patch) | |
| tree | 98e9cf1917c9b8f1c6c2d8121746fd4f8e414f45 /net/ipv4/icmp.c | |
| parent | inet: Hide route peer accesses behind helpers. (diff) | |
| download | linux-dev-46517008e1168dc926cf2c47d529efc07eca85c0.tar.xz linux-dev-46517008e1168dc926cf2c47d529efc07eca85c0.zip | |
ipv4: Kill ip_rt_frag_needed().
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It's only real substance is to perform an extremely outdated BSD4.2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>
Diffstat (limited to 'net/ipv4/icmp.c')
| -rw-r--r-- | net/ipv4/icmp.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c index 0c78ef1e5dde..e1caa1abe5d1 100644 --- a/net/ipv4/icmp.c +++ b/net/ipv4/icmp.c @@ -673,9 +673,7 @@ static void icmp_unreach(struct sk_buff *skb) LIMIT_NETDEBUG(KERN_INFO pr_fmt("%pI4: fragmentation needed and DF set\n"), &iph->daddr); } else { - info = ip_rt_frag_needed(net, iph, - ntohs(icmph->un.frag.mtu), - skb->dev); + info = ntohs(icmph->un.frag.mtu); if (!info) goto out; } |