From 46517008e1168dc926cf2c47d529efc07eca85c0 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Sun, 10 Jun 2012 00:04:12 -0700 Subject: 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 It's only real substance is to perform an extremely outdated BSD4.2 ICMP check, which we can safely remove.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 --- net/rxrpc/ar-error.c | 4 ---- 1 file changed, 4 deletions(-) (limited to 'net/rxrpc') diff --git a/net/rxrpc/ar-error.c b/net/rxrpc/ar-error.c index 5d6b572a6704..a9206087b4d7 100644 --- a/net/rxrpc/ar-error.c +++ b/net/rxrpc/ar-error.c @@ -81,10 +81,6 @@ void rxrpc_UDP_error_report(struct sock *sk) _net("I/F MTU %u", mtu); } - /* ip_rt_frag_needed() may have eaten the info */ - if (mtu == 0) - mtu = ntohs(icmp_hdr(skb)->un.frag.mtu); - if (mtu == 0) { /* they didn't give us a size, estimate one */ if (mtu > 1500) { -- cgit