1 files changed, 0 insertions, 61 deletions

diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 03e5b614370e..4f5834c4a667 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1664,67 +1664,6 @@ out:	kfree_skb(skb);
         return 0;
 }
 
-/*
- *      The last two values are not from the RFC but
- *      are needed for AMPRnet AX.25 paths.
- */
-
-static const unsigned short mtu_plateau[] =
-{32000, 17914, 8166, 4352, 2002, 1492, 576, 296, 216, 128 };
-
-static inline unsigned short guess_mtu(unsigned short old_mtu)
-{
-        int i;
-
-        for (i = 0; i < ARRAY_SIZE(mtu_plateau); i++)
-                if (old_mtu > mtu_plateau[i])
-                        return mtu_plateau[i];
-        return 68;
-}
-
-unsigned short ip_rt_frag_needed(struct net *net, const struct iphdr *iph,
-                                 unsigned short new_mtu,
-                                 struct net_device *dev)
-{
-        unsigned short old_mtu = ntohs(iph->tot_len);
-        unsigned short est_mtu = 0;
-        struct inet_peer *peer;
-
-        peer = inet_getpeer_v4(net->ipv4.peers, iph->daddr, 1);
-        if (peer) {
-                unsigned short mtu = new_mtu;
-
-                if (new_mtu < 68 || new_mtu >= old_mtu) {
-                        /* BSD 4.2 derived systems incorrectly adjust
-                         * tot_len by the IP header length, and report
-                         * a zero MTU in the ICMP message.
-                         */
-                        if (mtu == 0 &&
-                            old_mtu >= 68 + (iph->ihl << 2))
-                                old_mtu -= iph->ihl << 2;
-                        mtu = guess_mtu(old_mtu);
-                }
-
-                if (mtu < ip_rt_min_pmtu)
-                        mtu = ip_rt_min_pmtu;
-                if (!peer->pmtu_expires || mtu < peer->pmtu_learned) {
-                        unsigned long pmtu_expires;
-
-                        pmtu_expires = jiffies + ip_rt_mtu_expires;
-                        if (!pmtu_expires)
-                                pmtu_expires = 1UL;
-
-                        est_mtu = mtu;
-                        peer->pmtu_learned = mtu;
-                        peer->pmtu_expires = pmtu_expires;
-                        atomic_inc(&__rt_peer_genid);
-                }
-
-                inet_putpeer(peer);
-        }
-        return est_mtu ? : new_mtu;
-}
-
 static void check_peer_pmtu(struct dst_entry *dst, struct inet_peer *peer)
 {
         unsigned long expires = ACCESS_ONCE(peer->pmtu_expires);