mtu_reserved 733 net/bridge/br_netfilter_hooks.c unsigned int mtu, mtu_reserved; mtu_reserved 735 net/bridge/br_netfilter_hooks.c mtu_reserved = nf_bridge_mtu_reduction(skb); mtu_reserved 741 net/bridge/br_netfilter_hooks.c if (skb_is_gso(skb) || skb->len + mtu_reserved <= mtu) {