Lines Matching refs:mtu
819 int mtu; in ipip6_tunnel_xmit() local
922 mtu = dst_mtu(&rt->dst) - t_hlen; in ipip6_tunnel_xmit()
924 if (mtu < 68) { in ipip6_tunnel_xmit()
930 if (mtu < IPV6_MIN_MTU) { in ipip6_tunnel_xmit()
931 mtu = IPV6_MIN_MTU; in ipip6_tunnel_xmit()
936 skb_dst(skb)->ops->update_pmtu(skb_dst(skb), NULL, skb, mtu); in ipip6_tunnel_xmit()
938 if (skb->len > mtu && !skb_is_gso(skb)) { in ipip6_tunnel_xmit()
939 icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu); in ipip6_tunnel_xmit()
1075 dev->mtu = tdev->mtu - t_hlen; in ipip6_tunnel_bind_dev()
1076 if (dev->mtu < IPV6_MIN_MTU) in ipip6_tunnel_bind_dev()
1077 dev->mtu = IPV6_MIN_MTU; in ipip6_tunnel_bind_dev()
1327 dev->mtu = new_mtu; in ipip6_tunnel_change_mtu()
1366 dev->mtu = ETH_DATA_LEN - t_hlen; in ipip6_tunnel_setup()