Lines Matching defs:mtu
209 unsigned int mtu;
217 unsigned int mtu, bool DF, struct ip_frag_state *state);
479 unsigned int mtu, res;
489 mtu = rt->rt_pmtu;
490 if (mtu && time_before(jiffies, READ_ONCE(rt->dst.expires)))
494 /* 'forwarding = true' case should always honour route mtu */
495 mtu = dst_metric_raw(dst, RTAX_MTU);
496 if (mtu)
499 mtu = READ_ONCE(dev->mtu);
502 if (rt->rt_uses_gateway && mtu > 576)
503 mtu = 576;
507 mtu = min_t(unsigned int, mtu, IP_MAX_MTU);
509 res = mtu - lwtunnel_headroom(dst->lwtstate, mtu);
528 unsigned int mtu, res;
531 mtu = dst_metric_raw(dst, RTAX_MTU);
532 if (!mtu)
533 mtu = READ_ONCE(dst_dev_rcu(dst)->mtu);
534 mtu = min_t(unsigned int, mtu, IP_MAX_MTU);
535 res = mtu - lwtunnel_headroom(dst->lwtstate, mtu);
545 unsigned int mtu;
553 mtu = min(READ_ONCE(dst_dev(dst)->mtu), IP_MAX_MTU);
554 return mtu - lwtunnel_headroom(dst->lwtstate, mtu);
861 static inline bool inetdev_valid_mtu(unsigned int mtu)
863 return likely(mtu >= IPV4_MIN_MTU);