dst6_mtu
if (dst6_mtu(dst) > mtu)
READ_ONCE(rt->dst.dev->mtu) : dst6_mtu(&rt->dst);
READ_ONCE(rt->dst.dev->mtu) : dst6_mtu(xfrm_dst_path(&rt->dst));
mtu = dst6_mtu(dst);
mtu = dst6_mtu(dst) - eth_hlen - psh_hlen - t->tun_hlen;
if (rel_info > dst6_mtu(skb_dst(skb2)))
val = dst6_mtu(dst);
mtuinfo.ip6m_mtu = dst6_mtu(dst);
u32 dmtu = dst6_mtu(&rt->dst);
if (mtu >= dst6_mtu(dst))
unsigned int mtu = dst6_mtu(dst);
tcp_sync_mss(newsk, dst6_mtu(dst));
dmtu = dst6_mtu(dst);