IPV4_MIN_MTU
dev->min_mtu = IPV4_MIN_MTU;
dev->min_mtu = IPV4_MIN_MTU;
return likely(mtu >= IPV4_MIN_MTU);
if (mtu < IPV4_MIN_MTU)
if (skb->len <= IPV4_MIN_MTU || ip_dont_fragment(sk, &rt->dst)) {
if (mtu < IPV4_MIN_MTU)
mtu = IPV4_MIN_MTU;
static int ip_min_valid_pmtu __read_mostly = IPV4_MIN_MTU;
IPV6_MIN_MTU : IPV4_MIN_MTU);
dev->mtu = max_t(int, mtu, IPV4_MIN_MTU);
dev->min_mtu = IPV4_MIN_MTU;
if (mtu < IPV4_MIN_MTU) {