88 			       __be32 daddr, __be32 saddr, const struct tcphdr *th);
466 	struct tcphdr *th = (struct tcphdr *)(skb->data + (iph->ihl << 2));  in tcp_v4_err()  local
478 				       th->dest, iph->saddr, ntohs(th->source),  in tcp_v4_err()
488 	seq = ntohl(th->seq);  in tcp_v4_err()
583 		ip_icmp_error(sk, skb, err, th->dest, info, (u8 *)th);  in tcp_v4_err()
629 	struct tcphdr *th = tcp_hdr(skb);  in __tcp_v4_send_check()  local
631 	th->check = ~tcp_v4_check(skb->len, saddr, daddr, 0);  in __tcp_v4_send_check()
660 	const struct tcphdr *th = tcp_hdr(skb);  in tcp_v4_send_reset()  local
662 		struct tcphdr th;  in tcp_v4_send_reset()  member
680 	if (th->rst)  in tcp_v4_send_reset()
691 	rep.th.dest   = th->source;  in tcp_v4_send_reset()
692 	rep.th.source = th->dest;  in tcp_v4_send_reset()
693 	rep.th.doff   = sizeof(struct tcphdr) / 4;  in tcp_v4_send_reset()
694 	rep.th.rst    = 1;  in tcp_v4_send_reset()
696 	if (th->ack) {  in tcp_v4_send_reset()
697 		rep.th.seq = th->ack_seq;  in tcp_v4_send_reset()
699 		rep.th.ack = 1;  in tcp_v4_send_reset()
700 		rep.th.ack_seq = htonl(ntohl(th->seq) + th->syn + th->fin +  in tcp_v4_send_reset()
701 				       skb->len - (th->doff << 2));  in tcp_v4_send_reset()
706 	arg.iov[0].iov_len  = sizeof(rep.th);  in tcp_v4_send_reset()
711 	hash_location = tcp_parse_md5sig_option(th);  in tcp_v4_send_reset()
737 					     th->source, ip_hdr(skb)->daddr,  in tcp_v4_send_reset()
738 					     ntohs(th->source), dif, sdif);  in tcp_v4_send_reset()
766 		rep.th.doff = arg.iov[0].iov_len / 4;  in tcp_v4_send_reset()
770 				     ip_hdr(skb)->daddr, &rep.th);  in tcp_v4_send_reset()
830 	const struct tcphdr *th = tcp_hdr(skb);  in tcp_v4_send_ack()  local
832 		struct tcphdr th;  in tcp_v4_send_ack()  member
844 	memset(&rep.th, 0, sizeof(struct tcphdr));  in tcp_v4_send_ack()
848 	arg.iov[0].iov_len  = sizeof(rep.th);  in tcp_v4_send_ack()
859 	rep.th.dest    = th->source;  in tcp_v4_send_ack()
860 	rep.th.source  = th->dest;  in tcp_v4_send_ack()
861 	rep.th.doff    = arg.iov[0].iov_len / 4;  in tcp_v4_send_ack()
862 	rep.th.seq     = htonl(seq);  in tcp_v4_send_ack()
863 	rep.th.ack_seq = htonl(ack);  in tcp_v4_send_ack()
864 	rep.th.ack     = 1;  in tcp_v4_send_ack()
865 	rep.th.window  = htons(win);  in tcp_v4_send_ack()
876 		rep.th.doff = arg.iov[0].iov_len/4;  in tcp_v4_send_ack()
880 				    ip_hdr(skb)->daddr, &rep.th);  in tcp_v4_send_ack()
1266 				   const struct tcphdr *th, int nbytes)  in tcp_v4_md5_hash_headers()  argument
1280 	memcpy(_th, th, sizeof(*th));  in tcp_v4_md5_hash_headers()
1283 	sg_init_one(&sg, bp, sizeof(*bp) + sizeof(*th));  in tcp_v4_md5_hash_headers()
1285 				sizeof(*bp) + sizeof(*th));  in tcp_v4_md5_hash_headers()
1290 			       __be32 daddr, __be32 saddr, const struct tcphdr *th)  in tcp_v4_md5_hash_hdr()  argument
1302 	if (tcp_v4_md5_hash_headers(hp, daddr, saddr, th, th->doff << 2))  in tcp_v4_md5_hash_hdr()
1326 	const struct tcphdr *th = tcp_hdr(skb);  in tcp_v4_md5_hash_skb()  local
1346 	if (tcp_v4_md5_hash_headers(hp, daddr, saddr, th, skb->len))  in tcp_v4_md5_hash_skb()
1348 	if (tcp_md5_hash_skb_data(hp, skb, th->doff << 2))  in tcp_v4_md5_hash_skb()
1386 	const struct tcphdr *th = tcp_hdr(skb);  in tcp_v4_inbound_md5_hash()  local
1398 	hash_location = tcp_parse_md5sig_option(th);  in tcp_v4_inbound_md5_hash()
1424 				     &iph->saddr, ntohs(th->source),  in tcp_v4_inbound_md5_hash()
1425 				     &iph->daddr, ntohs(th->dest),  in tcp_v4_inbound_md5_hash()
1624 	const struct tcphdr *th = tcp_hdr(skb);  in tcp_v4_cookie_check()  local
1626 	if (!th->syn)  in tcp_v4_cookie_check()
1633 			 struct tcphdr *th, u32 *cookie)  in tcp_v4_get_syncookie()  argument
1638 				    &tcp_request_sock_ipv4_ops, sk, th);  in tcp_v4_get_syncookie()
1640 		*cookie = __cookie_v4_init_sequence(iph, th, &mss);  in tcp_v4_get_syncookie()
1720 	const struct tcphdr *th;  in tcp_v4_early_demux()  local
1730 	th = tcp_hdr(skb);  in tcp_v4_early_demux()
1732 	if (th->doff < sizeof(struct tcphdr) / 4)  in tcp_v4_early_demux()
1736 				       iph->saddr, th->source,  in tcp_v4_early_demux()
1737 				       iph->daddr, ntohs(th->dest),  in tcp_v4_early_demux()
1759 	const struct tcphdr *th;  in tcp_add_backlog()  local
1788 	th = (const struct tcphdr *)skb->data;  in tcp_add_backlog()
1789 	hdrlen = th->doff * 4;  in tcp_add_backlog()
1814 	    thtail->doff != th->doff ||  in tcp_add_backlog()
1815 	    memcmp(thtail + 1, th + 1, hdrlen - sizeof(*th)))  in tcp_add_backlog()
1824 			thtail->window = th->window;  in tcp_add_backlog()
1835 		thtail->fin |= th->fin;  in tcp_add_backlog()
1877 	struct tcphdr *th = (struct tcphdr *)skb->data;  in tcp_filter()  local
1879 	return sk_filter_trim_cap(sk, skb, th->doff * 4);  in tcp_filter()
1890 			   const struct tcphdr *th)  in tcp_v4_fill_cb()  argument
1899 	TCP_SKB_CB(skb)->seq = ntohl(th->seq);  in tcp_v4_fill_cb()
1900 	TCP_SKB_CB(skb)->end_seq = (TCP_SKB_CB(skb)->seq + th->syn + th->fin +  in tcp_v4_fill_cb()
1901 				    skb->len - th->doff * 4);  in tcp_v4_fill_cb()
1902 	TCP_SKB_CB(skb)->ack_seq = ntohl(th->ack_seq);  in tcp_v4_fill_cb()
1903 	TCP_SKB_CB(skb)->tcp_flags = tcp_flag_byte(th);  in tcp_v4_fill_cb()
1922 	const struct tcphdr *th;  in tcp_v4_rcv()  local
1936 	th = (const struct tcphdr *)skb->data;  in tcp_v4_rcv()
1938 	if (unlikely(th->doff < sizeof(struct tcphdr) / 4))  in tcp_v4_rcv()
1940 	if (!pskb_may_pull(skb, th->doff * 4))  in tcp_v4_rcv()
1945 	 * provided case of th->doff==0 is eliminated.  in tcp_v4_rcv()
1951 	th = (const struct tcphdr *)skb->data;  in tcp_v4_rcv()
1954 	sk = __inet_lookup_skb(&tcp_hashinfo, skb, __tcp_hdrlen(th), th->source,  in tcp_v4_rcv()
1955 			       th->dest, sdif, &refcounted);  in tcp_v4_rcv()
1989 			th = (const struct tcphdr *)skb->data;  in tcp_v4_rcv()
1991 			tcp_v4_fill_cb(skb, iph, th);  in tcp_v4_rcv()
2034 	th = (const struct tcphdr *)skb->data;  in tcp_v4_rcv()
2036 	tcp_v4_fill_cb(skb, iph, th);  in tcp_v4_rcv()
2073 	tcp_v4_fill_cb(skb, iph, th);  in tcp_v4_rcv()
2101 	tcp_v4_fill_cb(skb, iph, th);  in tcp_v4_rcv()
2107 	switch (tcp_timewait_state_process(inet_twsk(sk), skb, th)) {  in tcp_v4_rcv()
2111 							__tcp_hdrlen(th),  in tcp_v4_rcv()
2112 							iph->saddr, th->source,  in tcp_v4_rcv()
2113 							iph->daddr, th->dest,  in tcp_v4_rcv()
2526 	seq_printf(f, "%4d: %08X:%04X %08X:%04X"  in get_openreq4()
2567 		timer_active	= 4;  in get_tcp4_sock()
2587 	seq_printf(f, "%4d: %08X:%04X %08X:%04X %02X %08X:%08X %02X:%08lX "  in get_tcp4_sock()
2620 	seq_printf(f, "%4d: %08X:%04X %08X:%04X"  in get_timewait4_sock()