taglinefilesource code
rt_mtu183include/net/route.hunsigned short    rt_mtu;
rt_mtu930net/ipv4/route.c(unsigned long)r->rt_src, (int)r->rt_mtu, r->rt_window, (int)r->rt_irtt, r->rt_hh ? r->rt_hh->hh_refcnt : -1, r->rt_hh ? r->rt_hh->hh_uptodate : 0);
rt_mtu1128net/ipv4/route.crt->rt_mtu = dev->mtu;
rt_mtu1131net/ipv4/route.crt->rt_mtu = 576;
rt_mtu1547net/ipv4/route.crth->rt_mtu  = fi->fib_mtu;
rt_mtu560net/ipv4/tcp.cif (rt->rt_mtu > new_mtu)
rt_mtu561net/ipv4/tcp.crt->rt_mtu = new_mtu;
rt_mtu2010net/ipv4/tcp.csk->mtu = rt->rt_mtu - sizeof(struct iphdr) - sizeof(struct tcphdr);
rt_mtu481net/ipv4/tcp_input.cnewsk->mtu = rt->rt_mtu - sizeof(struct iphdr) - sizeof(struct tcphdr);
rt_mtu384net/ipv4/tcp_output.cif (rt && ntohs(iph->tot_len) > rt->rt_mtu)