139 					   struct sk_buff *skb, u32 mtu);
158 	.mtu =			ipv4_mtu,
962 static void __ip_rt_update_pmtu(struct rtable *rt, struct flowi4 *fl4, u32 mtu)  in __ip_rt_update_pmtu()  argument
970 	if (ipv4_mtu(dst) < mtu)  in __ip_rt_update_pmtu()
973 	if (mtu < ip_rt_min_pmtu)  in __ip_rt_update_pmtu()
974 		mtu = ip_rt_min_pmtu;  in __ip_rt_update_pmtu()
976 	if (rt->rt_pmtu == mtu &&  in __ip_rt_update_pmtu()
984 		update_or_create_fnhe(nh, fl4->daddr, 0, mtu,  in __ip_rt_update_pmtu()
991 			      struct sk_buff *skb, u32 mtu)  in ip_rt_update_pmtu()  argument
997 	__ip_rt_update_pmtu(rt, &fl4, mtu);  in ip_rt_update_pmtu()
1000 void ipv4_update_pmtu(struct sk_buff *skb, struct net *net, u32 mtu,  in ipv4_update_pmtu()  argument
1014 		__ip_rt_update_pmtu(rt, &fl4, mtu);  in ipv4_update_pmtu()
1020 static void __ipv4_sk_update_pmtu(struct sk_buff *skb, struct sock *sk, u32 mtu)  in __ipv4_sk_update_pmtu()  argument
1033 		__ip_rt_update_pmtu(rt, &fl4, mtu);  in __ipv4_sk_update_pmtu()
1038 void ipv4_sk_update_pmtu(struct sk_buff *skb, struct sock *sk, u32 mtu)  in ipv4_sk_update_pmtu()  argument
1054 		__ipv4_sk_update_pmtu(skb, sk, mtu);  in ipv4_sk_update_pmtu()
1069 	__ip_rt_update_pmtu((struct rtable *) rt->dst.path, &fl4, mtu);  in ipv4_sk_update_pmtu()
1218 		advmss = max_t(unsigned int, dst->dev->mtu - 40,  in ipv4_default_advmss()
1229 	unsigned int mtu = rt->rt_pmtu;  in ipv4_mtu()  local
1231 	if (!mtu || time_after_eq(jiffies, rt->dst.expires))  in ipv4_mtu()
1232 		mtu = dst_metric_raw(dst, RTAX_MTU);  in ipv4_mtu()
1234 	if (mtu)  in ipv4_mtu()
1235 		return mtu;  in ipv4_mtu()
1237 	mtu = dst->dev->mtu;  in ipv4_mtu()
1240 		if (rt->rt_uses_gateway && mtu > 576)  in ipv4_mtu()
1241 			mtu = 576;  in ipv4_mtu()
1244 	return min_t(unsigned int, mtu, IP_MAX_MTU);  in ipv4_mtu()
2255 	unsigned int mtu = dst_metric_raw(dst, RTAX_MTU);  in ipv4_blackhole_mtu()  local
2257 	return mtu ? : dst->dev->mtu;  in ipv4_blackhole_mtu()
2261 					  struct sk_buff *skb, u32 mtu)  in ipv4_rt_blackhole_update_pmtu()  argument
2279 	.mtu			=	ipv4_blackhole_mtu,