TOS_OFF            25 samples/bpf/tcbpf1_kern.c 	__u8 old_tos = load_byte(skb, TOS_OFF);
TOS_OFF            28 samples/bpf/tcbpf1_kern.c 	bpf_skb_store_bytes(skb, TOS_OFF, &new_tos, sizeof(new_tos), 0);