143 					   struct sk_buff *skb, u32 mtu);
162 	.mtu =			ipv4_mtu,
967 static void __ip_rt_update_pmtu(struct rtable *rt, struct flowi4 *fl4, u32 mtu)  in __ip_rt_update_pmtu()  argument
975 	if (ipv4_mtu(dst) < mtu)  in __ip_rt_update_pmtu()
978 	if (mtu < ip_rt_min_pmtu)  in __ip_rt_update_pmtu()
979 		mtu = ip_rt_min_pmtu;  in __ip_rt_update_pmtu()
981 	if (rt->rt_pmtu == mtu &&  in __ip_rt_update_pmtu()
989 		update_or_create_fnhe(nh, fl4->daddr, 0, mtu,  in __ip_rt_update_pmtu()
996 			      struct sk_buff *skb, u32 mtu)  in ip_rt_update_pmtu()  argument
1002 	__ip_rt_update_pmtu(rt, &fl4, mtu);  in ip_rt_update_pmtu()
1005 void ipv4_update_pmtu(struct sk_buff *skb, struct net *net, u32 mtu,  in ipv4_update_pmtu()  argument
1019 		__ip_rt_update_pmtu(rt, &fl4, mtu);  in ipv4_update_pmtu()
1025 static void __ipv4_sk_update_pmtu(struct sk_buff *skb, struct sock *sk, u32 mtu)  in __ipv4_sk_update_pmtu()  argument
1038 		__ip_rt_update_pmtu(rt, &fl4, mtu);  in __ipv4_sk_update_pmtu()
1043 void ipv4_sk_update_pmtu(struct sk_buff *skb, struct sock *sk, u32 mtu)  in ipv4_sk_update_pmtu()  argument
1059 		__ipv4_sk_update_pmtu(skb, sk, mtu);  in ipv4_sk_update_pmtu()
1074 	__ip_rt_update_pmtu((struct rtable *) rt->dst.path, &fl4, mtu);  in ipv4_sk_update_pmtu()
1223 		advmss = max_t(unsigned int, dst->dev->mtu - 40,  in ipv4_default_advmss()
1234 	unsigned int mtu = rt->rt_pmtu;  in ipv4_mtu()  local
1236 	if (!mtu || time_after_eq(jiffies, rt->dst.expires))  in ipv4_mtu()
1237 		mtu = dst_metric_raw(dst, RTAX_MTU);  in ipv4_mtu()
1239 	if (mtu)  in ipv4_mtu()
1240 		return mtu;  in ipv4_mtu()
1242 	mtu = dst->dev->mtu;  in ipv4_mtu()
1245 		if (rt->rt_uses_gateway && mtu > 576)  in ipv4_mtu()
1246 			mtu = 576;  in ipv4_mtu()
1249 	return min_t(unsigned int, mtu, IP_MAX_MTU);  in ipv4_mtu()
2326 	unsigned int mtu = dst_metric_raw(dst, RTAX_MTU);  in ipv4_blackhole_mtu()  local
2328 	return mtu ? : dst->dev->mtu;  in ipv4_blackhole_mtu()
2332 					  struct sk_buff *skb, u32 mtu)  in ipv4_rt_blackhole_update_pmtu()  argument
2350 	.mtu			=	ipv4_blackhole_mtu,