91 			       __be32 daddr, __be32 saddr, const struct tcphdr *th);
498 	struct tcphdr *th = (struct tcphdr *)(skb->data + (iph->ihl << 2));  in tcp_v4_err()  local
509 				       iph->daddr, th->dest, iph->saddr,  in tcp_v4_err()
510 				       ntohs(th->source), inet_iif(skb), 0);  in tcp_v4_err()
521 	seq = ntohl(th->seq);  in tcp_v4_err()
624 		ip_icmp_error(sk, skb, err, th->dest, info, (u8 *)th);  in tcp_v4_err()
665 	struct tcphdr *th = tcp_hdr(skb);  in __tcp_v4_send_check()  local
667 	th->check = ~tcp_v4_check(skb->len, saddr, daddr, 0);  in __tcp_v4_send_check()
708 	reply->doff = arg->iov[0].iov_len / 4;  in tcp_v4_ao_sign_reset()
743 	const struct tcphdr *th = tcp_hdr(skb);  in tcp_v4_send_reset()  local
745 		struct tcphdr th;  in tcp_v4_send_reset()  member
763 	if (th->rst)  in tcp_v4_send_reset()
774 	rep.th.dest   = th->source;  in tcp_v4_send_reset()
775 	rep.th.source = th->dest;  in tcp_v4_send_reset()
776 	rep.th.doff   = sizeof(struct tcphdr) / 4;  in tcp_v4_send_reset()
777 	rep.th.rst    = 1;  in tcp_v4_send_reset()
779 	if (th->ack) {  in tcp_v4_send_reset()
780 		rep.th.seq = th->ack_seq;  in tcp_v4_send_reset()
782 		rep.th.ack = 1;  in tcp_v4_send_reset()
783 		rep.th.ack_seq = htonl(ntohl(th->seq) + th->syn + th->fin +  in tcp_v4_send_reset()
784 				       skb->len - (th->doff << 2));  in tcp_v4_send_reset()
789 	arg.iov[0].iov_len  = sizeof(rep.th);  in tcp_v4_send_reset()
797 	if (aoh && tcp_v4_ao_sign_reset(sk, skb, aoh, &arg, &rep.th, rep.opt))  in tcp_v4_send_reset()
827 					     th->source, ip_hdr(skb)->daddr,  in tcp_v4_send_reset()
828 					     ntohs(th->source), dif, sdif);  in tcp_v4_send_reset()
856 		rep.th.doff = arg.iov[0].iov_len / 4;  in tcp_v4_send_reset()
860 				     ip_hdr(skb)->daddr, &rep.th);  in tcp_v4_send_reset()
870 			rep.th.doff = arg.iov[0].iov_len / 4;  in tcp_v4_send_reset()
941 	const struct tcphdr *th = tcp_hdr(skb);  in tcp_v4_send_ack()  local
943 		struct tcphdr th;  in tcp_v4_send_ack()  member
951 	memset(&rep.th, 0, sizeof(struct tcphdr));  in tcp_v4_send_ack()
955 	arg.iov[0].iov_len  = sizeof(rep.th);  in tcp_v4_send_ack()
966 	rep.th.dest    = th->source;  in tcp_v4_send_ack()
967 	rep.th.source  = th->dest;  in tcp_v4_send_ack()
968 	rep.th.doff    = arg.iov[0].iov_len / 4;  in tcp_v4_send_ack()
969 	rep.th.seq     = htonl(seq);  in tcp_v4_send_ack()
970 	rep.th.ack_seq = htonl(ack);  in tcp_v4_send_ack()
971 	rep.th.ack     = 1;  in tcp_v4_send_ack()
972 	rep.th.window  = htons(win);  in tcp_v4_send_ack()
983 		rep.th.doff = arg.iov[0].iov_len/4;  in tcp_v4_send_ack()
987 				    ip_hdr(skb)->daddr, &rep.th);  in tcp_v4_send_ack()
999 		rep.th.doff = arg.iov[0].iov_len / 4;  in tcp_v4_send_ack()
1005 				&rep.th, key->sne);  in tcp_v4_send_ack()
1569 				   const struct tcphdr *th, int nbytes)  argument
1583 	memcpy(_th, th, sizeof(*th));
1586 	sg_init_one(&sg, bp, sizeof(*bp) + sizeof(*th));
1588 				sizeof(*bp) + sizeof(*th));
1593 			       __be32 daddr, __be32 saddr, const struct tcphdr *th)  argument
1602 	if (tcp_v4_md5_hash_headers(&hp, daddr, saddr, th, th->doff << 2))
1624 	const struct tcphdr *th = tcp_hdr(skb);  local
1643 	if (tcp_v4_md5_hash_headers(&hp, daddr, saddr, th, skb->len))
1645 	if (tcp_sigpool_hash_skb_data(&hp, skb, th->doff << 2))
1864 	const struct tcphdr *th = tcp_hdr(skb);  local
1866 	if (!th->syn)
1873 			 struct tcphdr *th, u32 *cookie)  argument
1878 				    &tcp_request_sock_ipv4_ops, sk, th);
1880 		*cookie = __cookie_v4_init_sequence(iph, th, &mss);
1972 	const struct tcphdr *th;  local
1982 	th = tcp_hdr(skb);
1984 	if (th->doff < sizeof(struct tcphdr) / 4)
1988 				       iph->saddr, th->source,
1989 				       iph->daddr, ntohs(th->dest),
2012 	const struct tcphdr *th;  local
2045 	th = (const struct tcphdr *)skb->data;
2046 	hdrlen = th->doff * 4;
2062 	    thtail->doff != th->doff ||
2063 	    memcmp(thtail + 1, th + 1, hdrlen - sizeof(*th)))
2081 			thtail->window = th->window;
2092 		thtail->fin |= th->fin;
2142 	struct tcphdr *th = (struct tcphdr *)skb->data;  local
2144 	return sk_filter_trim_cap(sk, skb, th->doff * 4);
2155 			   const struct tcphdr *th)  argument
2164 	TCP_SKB_CB(skb)->seq = ntohl(th->seq);
2165 	TCP_SKB_CB(skb)->end_seq = (TCP_SKB_CB(skb)->seq + th->syn + th->fin +
2166 				    skb->len - th->doff * 4);
2167 	TCP_SKB_CB(skb)->ack_seq = ntohl(th->ack_seq);
2168 	TCP_SKB_CB(skb)->tcp_flags = tcp_flag_byte(th);
2186 	const struct tcphdr *th;  local
2202 	th = (const struct tcphdr *)skb->data;
2204 	if (unlikely(th->doff < sizeof(struct tcphdr) / 4)) {
2208 	if (!pskb_may_pull(skb, th->doff * 4))
2213 	 * provided case of th->doff==0 is eliminated.
2219 	th = (const struct tcphdr *)skb->data;
2223 			       skb, __tcp_hdrlen(th), th->source,
2224 			       th->dest, sdif, &refcounted);
2271 			th = (const struct tcphdr *)skb->data;
2273 			tcp_v4_fill_cb(skb, iph, th);
2336 	th = (const struct tcphdr *)skb->data;
2338 	tcp_v4_fill_cb(skb, iph, th);
2371 	tcp_v4_fill_cb(skb, iph, th);
2403 	tcp_v4_fill_cb(skb, iph, th);
2409 	switch (tcp_timewait_state_process(inet_twsk(sk), skb, th, &isn)) {
2413 							skb, __tcp_hdrlen(th),
2414 							iph->saddr, th->source,
2415 							iph->daddr, th->dest,
2874 	seq_printf(f, "%4d: %08X:%04X %08X:%04X"
2917 		timer_active	= 4;
2937 	seq_printf(f, "%4d: %08X:%04X %08X:%04X %02X %08X:%08X %02X:%08lX "
2970 	seq_printf(f, "%4d: %08X:%04X %08X:%04X"
3531 	net->ipv4.sysctl_tcp_syn_linear_timeouts = 4;