IPV4_MIN_MTU 765 include/net/ip.h return likely(mtu >= IPV4_MIN_MTU); IPV4_MIN_MTU 476 net/ipv4/igmp.c if (mtu < IPV4_MIN_MTU) IPV4_MIN_MTU 320 net/ipv4/ip_tunnel.c if (mtu < IPV4_MIN_MTU) IPV4_MIN_MTU 321 net/ipv4/ip_tunnel.c mtu = IPV4_MIN_MTU; IPV4_MIN_MTU 3224 net/ipv4/route.c static int ip_min_valid_pmtu __read_mostly = IPV4_MIN_MTU; IPV4_MIN_MTU 1133 net/ipv6/ip6_tunnel.c IPV6_MIN_MTU : IPV4_MIN_MTU); IPV4_MIN_MTU 689 net/ipv6/ip6_vti.c dev->mtu = max_t(int, mtu, IPV4_MIN_MTU); IPV4_MIN_MTU 901 net/ipv6/ip6_vti.c dev->min_mtu = IPV4_MIN_MTU;