91 			       __be32 daddr, __be32 saddr, const struct tcphdr *th);
496 	struct tcphdr *th = (struct tcphdr *)(skb->data + (iph->ihl << 2));  in tcp_v4_err()  local
507 				       iph->daddr, th->dest, iph->saddr,  in tcp_v4_err()
508 				       ntohs(th->source), inet_iif(skb), 0);  in tcp_v4_err()
519 	seq = ntohl(th->seq);  in tcp_v4_err()
622 		ip_icmp_error(sk, skb, err, th->dest, info, (u8 *)th);  in tcp_v4_err()
663 	struct tcphdr *th = tcp_hdr(skb);  in __tcp_v4_send_check()  local
665 	th->check = ~tcp_v4_check(skb->len, saddr, daddr, 0);  in __tcp_v4_send_check()
706 	reply->doff = arg->iov[0].iov_len / 4;  in tcp_v4_ao_sign_reset()
741 	const struct tcphdr *th = tcp_hdr(skb);  in tcp_v4_send_reset()  local
743 		struct tcphdr th;  in tcp_v4_send_reset()  member
761 	if (th->rst)  in tcp_v4_send_reset()
772 	rep.th.dest   = th->source;  in tcp_v4_send_reset()
773 	rep.th.source = th->dest;  in tcp_v4_send_reset()
774 	rep.th.doff   = sizeof(struct tcphdr) / 4;  in tcp_v4_send_reset()
775 	rep.th.rst    = 1;  in tcp_v4_send_reset()
777 	if (th->ack) {  in tcp_v4_send_reset()
778 		rep.th.seq = th->ack_seq;  in tcp_v4_send_reset()
780 		rep.th.ack = 1;  in tcp_v4_send_reset()
781 		rep.th.ack_seq = htonl(ntohl(th->seq) + th->syn + th->fin +  in tcp_v4_send_reset()
782 				       skb->len - (th->doff << 2));  in tcp_v4_send_reset()
787 	arg.iov[0].iov_len  = sizeof(rep.th);  in tcp_v4_send_reset()
795 	if (aoh && tcp_v4_ao_sign_reset(sk, skb, aoh, &arg, &rep.th, rep.opt))  in tcp_v4_send_reset()
825 					     th->source, ip_hdr(skb)->daddr,  in tcp_v4_send_reset()
826 					     ntohs(th->source), dif, sdif);  in tcp_v4_send_reset()
854 		rep.th.doff = arg.iov[0].iov_len / 4;  in tcp_v4_send_reset()
858 				     ip_hdr(skb)->daddr, &rep.th);  in tcp_v4_send_reset()
868 			rep.th.doff = arg.iov[0].iov_len / 4;  in tcp_v4_send_reset()
939 	const struct tcphdr *th = tcp_hdr(skb);  in tcp_v4_send_ack()  local
941 		struct tcphdr th;  in tcp_v4_send_ack()  member
949 	memset(&rep.th, 0, sizeof(struct tcphdr));  in tcp_v4_send_ack()
953 	arg.iov[0].iov_len  = sizeof(rep.th);  in tcp_v4_send_ack()
964 	rep.th.dest    = th->source;  in tcp_v4_send_ack()
965 	rep.th.source  = th->dest;  in tcp_v4_send_ack()
966 	rep.th.doff    = arg.iov[0].iov_len / 4;  in tcp_v4_send_ack()
967 	rep.th.seq     = htonl(seq);  in tcp_v4_send_ack()
968 	rep.th.ack_seq = htonl(ack);  in tcp_v4_send_ack()
969 	rep.th.ack     = 1;  in tcp_v4_send_ack()
970 	rep.th.window  = htons(win);  in tcp_v4_send_ack()
981 		rep.th.doff = arg.iov[0].iov_len/4;  in tcp_v4_send_ack()
985 				    ip_hdr(skb)->daddr, &rep.th);  in tcp_v4_send_ack()
997 		rep.th.doff = arg.iov[0].iov_len / 4;  in tcp_v4_send_ack()
1003 				&rep.th, key->sne);  in tcp_v4_send_ack()
1566 				   const struct tcphdr *th, int nbytes)  argument
1580 	memcpy(_th, th, sizeof(*th));
1583 	sg_init_one(&sg, bp, sizeof(*bp) + sizeof(*th));
1585 				sizeof(*bp) + sizeof(*th));
1590 			       __be32 daddr, __be32 saddr, const struct tcphdr *th)  argument
1599 	if (tcp_v4_md5_hash_headers(&hp, daddr, saddr, th, th->doff << 2))
1621 	const struct tcphdr *th = tcp_hdr(skb);  local
1640 	if (tcp_v4_md5_hash_headers(&hp, daddr, saddr, th, skb->len))
1642 	if (tcp_sigpool_hash_skb_data(&hp, skb, th->doff << 2))
1861 	const struct tcphdr *th = tcp_hdr(skb);  local
1863 	if (!th->syn)
1870 			 struct tcphdr *th, u32 *cookie)  argument
1875 				    &tcp_request_sock_ipv4_ops, sk, th);
1877 		*cookie = __cookie_v4_init_sequence(iph, th, &mss);
1969 	const struct tcphdr *th;  local
1979 	th = tcp_hdr(skb);
1981 	if (th->doff < sizeof(struct tcphdr) / 4)
1985 				       iph->saddr, th->source,
1986 				       iph->daddr, ntohs(th->dest),
2009 	const struct tcphdr *th;  local
2042 	th = (const struct tcphdr *)skb->data;
2043 	hdrlen = th->doff * 4;
2059 	    thtail->doff != th->doff ||
2060 	    memcmp(thtail + 1, th + 1, hdrlen - sizeof(*th)))
2078 			thtail->window = th->window;
2089 		thtail->fin |= th->fin;
2139 	struct tcphdr *th = (struct tcphdr *)skb->data;  local
2141 	return sk_filter_trim_cap(sk, skb, th->doff * 4);
2152 			   const struct tcphdr *th)  argument
2161 	TCP_SKB_CB(skb)->seq = ntohl(th->seq);
2162 	TCP_SKB_CB(skb)->end_seq = (TCP_SKB_CB(skb)->seq + th->syn + th->fin +
2163 				    skb->len - th->doff * 4);
2164 	TCP_SKB_CB(skb)->ack_seq = ntohl(th->ack_seq);
2165 	TCP_SKB_CB(skb)->tcp_flags = tcp_flag_byte(th);
2183 	const struct tcphdr *th;  local
2199 	th = (const struct tcphdr *)skb->data;
2201 	if (unlikely(th->doff < sizeof(struct tcphdr) / 4)) {
2205 	if (!pskb_may_pull(skb, th->doff * 4))
2210 	 * provided case of th->doff==0 is eliminated.
2216 	th = (const struct tcphdr *)skb->data;
2220 			       skb, __tcp_hdrlen(th), th->source,
2221 			       th->dest, sdif, &refcounted);
2268 			th = (const struct tcphdr *)skb->data;
2270 			tcp_v4_fill_cb(skb, iph, th);
2333 	th = (const struct tcphdr *)skb->data;
2335 	tcp_v4_fill_cb(skb, iph, th);
2368 	tcp_v4_fill_cb(skb, iph, th);
2400 	tcp_v4_fill_cb(skb, iph, th);
2406 	switch (tcp_timewait_state_process(inet_twsk(sk), skb, th, &isn)) {
2410 							skb, __tcp_hdrlen(th),
2411 							iph->saddr, th->source,
2412 							iph->daddr, th->dest,
2871 	seq_printf(f, "%4d: %08X:%04X %08X:%04X"
2912 		timer_active	= 4;
2932 	seq_printf(f, "%4d: %08X:%04X %08X:%04X %02X %08X:%08X %02X:%08lX "
2965 	seq_printf(f, "%4d: %08X:%04X %08X:%04X"
3525 	net->ipv4.sysctl_tcp_syn_linear_timeouts = 4;