88 			       __be32 daddr, __be32 saddr, const struct tcphdr *th);
468 	struct tcphdr *th = (struct tcphdr *)(skb->data + (iph->ihl << 2));  in tcp_v4_err()  local
480 				       th->dest, iph->saddr, ntohs(th->source),  in tcp_v4_err()
490 	seq = ntohl(th->seq);  in tcp_v4_err()
585 		ip_icmp_error(sk, skb, err, th->dest, info, (u8 *)th);  in tcp_v4_err()
631 	struct tcphdr *th = tcp_hdr(skb);  in __tcp_v4_send_check()  local
633 	th->check = ~tcp_v4_check(skb->len, saddr, daddr, 0);  in __tcp_v4_send_check()
662 	const struct tcphdr *th = tcp_hdr(skb);  in tcp_v4_send_reset()  local
664 		struct tcphdr th;  in tcp_v4_send_reset()  member
682 	if (th->rst)  in tcp_v4_send_reset()
693 	rep.th.dest   = th->source;  in tcp_v4_send_reset()
694 	rep.th.source = th->dest;  in tcp_v4_send_reset()
695 	rep.th.doff   = sizeof(struct tcphdr) / 4;  in tcp_v4_send_reset()
696 	rep.th.rst    = 1;  in tcp_v4_send_reset()
698 	if (th->ack) {  in tcp_v4_send_reset()
699 		rep.th.seq = th->ack_seq;  in tcp_v4_send_reset()
701 		rep.th.ack = 1;  in tcp_v4_send_reset()
702 		rep.th.ack_seq = htonl(ntohl(th->seq) + th->syn + th->fin +  in tcp_v4_send_reset()
703 				       skb->len - (th->doff << 2));  in tcp_v4_send_reset()
708 	arg.iov[0].iov_len  = sizeof(rep.th);  in tcp_v4_send_reset()
713 	hash_location = tcp_parse_md5sig_option(th);  in tcp_v4_send_reset()
739 					     th->source, ip_hdr(skb)->daddr,  in tcp_v4_send_reset()
740 					     ntohs(th->source), dif, sdif);  in tcp_v4_send_reset()
768 		rep.th.doff = arg.iov[0].iov_len / 4;  in tcp_v4_send_reset()
772 				     ip_hdr(skb)->daddr, &rep.th);  in tcp_v4_send_reset()
832 	const struct tcphdr *th = tcp_hdr(skb);  in tcp_v4_send_ack()  local
834 		struct tcphdr th;  in tcp_v4_send_ack()  member
846 	memset(&rep.th, 0, sizeof(struct tcphdr));  in tcp_v4_send_ack()
850 	arg.iov[0].iov_len  = sizeof(rep.th);  in tcp_v4_send_ack()
861 	rep.th.dest    = th->source;  in tcp_v4_send_ack()
862 	rep.th.source  = th->dest;  in tcp_v4_send_ack()
863 	rep.th.doff    = arg.iov[0].iov_len / 4;  in tcp_v4_send_ack()
864 	rep.th.seq     = htonl(seq);  in tcp_v4_send_ack()
865 	rep.th.ack_seq = htonl(ack);  in tcp_v4_send_ack()
866 	rep.th.ack     = 1;  in tcp_v4_send_ack()
867 	rep.th.window  = htons(win);  in tcp_v4_send_ack()
878 		rep.th.doff = arg.iov[0].iov_len/4;  in tcp_v4_send_ack()
882 				    ip_hdr(skb)->daddr, &rep.th);  in tcp_v4_send_ack()
1281 				   const struct tcphdr *th, int nbytes)  in tcp_v4_md5_hash_headers()  argument
1295 	memcpy(_th, th, sizeof(*th));  in tcp_v4_md5_hash_headers()
1298 	sg_init_one(&sg, bp, sizeof(*bp) + sizeof(*th));  in tcp_v4_md5_hash_headers()
1300 				sizeof(*bp) + sizeof(*th));  in tcp_v4_md5_hash_headers()
1305 			       __be32 daddr, __be32 saddr, const struct tcphdr *th)  in tcp_v4_md5_hash_hdr()  argument
1317 	if (tcp_v4_md5_hash_headers(hp, daddr, saddr, th, th->doff << 2))  in tcp_v4_md5_hash_hdr()
1341 	const struct tcphdr *th = tcp_hdr(skb);  in tcp_v4_md5_hash_skb()  local
1361 	if (tcp_v4_md5_hash_headers(hp, daddr, saddr, th, skb->len))  in tcp_v4_md5_hash_skb()
1363 	if (tcp_md5_hash_skb_data(hp, skb, th->doff << 2))  in tcp_v4_md5_hash_skb()
1401 	const struct tcphdr *th = tcp_hdr(skb);  in tcp_v4_inbound_md5_hash()  local
1413 	hash_location = tcp_parse_md5sig_option(th);  in tcp_v4_inbound_md5_hash()
1439 				     &iph->saddr, ntohs(th->source),  in tcp_v4_inbound_md5_hash()
1440 				     &iph->daddr, ntohs(th->dest),  in tcp_v4_inbound_md5_hash()
1639 	const struct tcphdr *th = tcp_hdr(skb);  in tcp_v4_cookie_check()  local
1641 	if (!th->syn)  in tcp_v4_cookie_check()
1648 			 struct tcphdr *th, u32 *cookie)  in tcp_v4_get_syncookie()  argument
1653 				    &tcp_request_sock_ipv4_ops, sk, th);  in tcp_v4_get_syncookie()
1655 		*cookie = __cookie_v4_init_sequence(iph, th, &mss);  in tcp_v4_get_syncookie()
1738 	const struct tcphdr *th;  in tcp_v4_early_demux()  local
1748 	th = tcp_hdr(skb);  in tcp_v4_early_demux()
1750 	if (th->doff < sizeof(struct tcphdr) / 4)  in tcp_v4_early_demux()
1754 				       iph->saddr, th->source,  in tcp_v4_early_demux()
1755 				       iph->daddr, ntohs(th->dest),  in tcp_v4_early_demux()
1777 	const struct tcphdr *th;  in tcp_add_backlog()  local
1807 	th = (const struct tcphdr *)skb->data;  in tcp_add_backlog()
1808 	hdrlen = th->doff * 4;  in tcp_add_backlog()
1826 	    thtail->doff != th->doff ||  in tcp_add_backlog()
1827 	    memcmp(thtail + 1, th + 1, hdrlen - sizeof(*th)))  in tcp_add_backlog()
1845 			thtail->window = th->window;  in tcp_add_backlog()
1856 		thtail->fin |= th->fin;  in tcp_add_backlog()
1897 	struct tcphdr *th = (struct tcphdr *)skb->data;  in tcp_filter()  local
1899 	return sk_filter_trim_cap(sk, skb, th->doff * 4);  in tcp_filter()
1910 			   const struct tcphdr *th)  in tcp_v4_fill_cb()  argument
1919 	TCP_SKB_CB(skb)->seq = ntohl(th->seq);  in tcp_v4_fill_cb()
1920 	TCP_SKB_CB(skb)->end_seq = (TCP_SKB_CB(skb)->seq + th->syn + th->fin +  in tcp_v4_fill_cb()
1921 				    skb->len - th->doff * 4);  in tcp_v4_fill_cb()
1922 	TCP_SKB_CB(skb)->ack_seq = ntohl(th->ack_seq);  in tcp_v4_fill_cb()
1923 	TCP_SKB_CB(skb)->tcp_flags = tcp_flag_byte(th);  in tcp_v4_fill_cb()
1942 	const struct tcphdr *th;  in tcp_v4_rcv()  local
1956 	th = (const struct tcphdr *)skb->data;  in tcp_v4_rcv()
1958 	if (unlikely(th->doff < sizeof(struct tcphdr) / 4))  in tcp_v4_rcv()
1960 	if (!pskb_may_pull(skb, th->doff * 4))  in tcp_v4_rcv()
1965 	 * provided case of th->doff==0 is eliminated.  in tcp_v4_rcv()
1971 	th = (const struct tcphdr *)skb->data;  in tcp_v4_rcv()
1974 	sk = __inet_lookup_skb(&tcp_hashinfo, skb, __tcp_hdrlen(th), th->source,  in tcp_v4_rcv()
1975 			       th->dest, sdif, &refcounted);  in tcp_v4_rcv()
2010 			th = (const struct tcphdr *)skb->data;  in tcp_v4_rcv()
2012 			tcp_v4_fill_cb(skb, iph, th);  in tcp_v4_rcv()
2056 	th = (const struct tcphdr *)skb->data;  in tcp_v4_rcv()
2058 	tcp_v4_fill_cb(skb, iph, th);  in tcp_v4_rcv()
2095 	tcp_v4_fill_cb(skb, iph, th);  in tcp_v4_rcv()
2123 	tcp_v4_fill_cb(skb, iph, th);  in tcp_v4_rcv()
2129 	switch (tcp_timewait_state_process(inet_twsk(sk), skb, th)) {  in tcp_v4_rcv()
2133 							__tcp_hdrlen(th),  in tcp_v4_rcv()
2134 							iph->saddr, th->source,  in tcp_v4_rcv()
2135 							iph->daddr, th->dest,  in tcp_v4_rcv()
2549 	seq_printf(f, "%4d: %08X:%04X %08X:%04X"  in get_openreq4()
2590 		timer_active	= 4;  in get_tcp4_sock()
2610 	seq_printf(f, "%4d: %08X:%04X %08X:%04X %02X %08X:%08X %02X:%08lX "  in get_tcp4_sock()
2643 	seq_printf(f, "%4d: %08X:%04X %08X:%04X"  in get_timewait4_sock()