40 		struct tcphdr *th = tcp_hdr(skb);  in tcp4_gso_segment()  local
46 		th->check = 0;  in tcp4_gso_segment()
59 	struct tcphdr *th;  in tcp_gso_segment()  local
69 	th = tcp_hdr(skb);  in tcp_gso_segment()
70 	thlen = th->doff * 4;  in tcp_gso_segment()
71 	if (thlen < sizeof(*th))  in tcp_gso_segment()
125 	th = tcp_hdr(skb);  in tcp_gso_segment()
126 	seq = ntohl(th->seq);  in tcp_gso_segment()
131 	newcheck = ~csum_fold((__force __wsum)((__force u32)th->check +  in tcp_gso_segment()
135 		th->fin = th->psh = 0;  in tcp_gso_segment()
136 		th->check = newcheck;  in tcp_gso_segment()
139 			th->check = gso_make_checksum(skb, ~th->check);  in tcp_gso_segment()
148 		th = tcp_hdr(skb);  in tcp_gso_segment()
150 		th->seq = htonl(seq);  in tcp_gso_segment()
151 		th->cwr = 0;  in tcp_gso_segment()
170 	th->check = ~csum_fold((__force __wsum)((__force u32)th->check +  in tcp_gso_segment()
173 		th->check = gso_make_checksum(skb, ~th->check);  in tcp_gso_segment()
182 	struct tcphdr *th;  in tcp_gro_receive()  local
194 	hlen = off + sizeof(*th);  in tcp_gro_receive()
195 	th = skb_gro_header_fast(skb, off);  in tcp_gro_receive()
197 		th = skb_gro_header_slow(skb, hlen, off);  in tcp_gro_receive()
198 		if (unlikely(!th))  in tcp_gro_receive()
202 	thlen = th->doff * 4;  in tcp_gro_receive()
203 	if (thlen < sizeof(*th))  in tcp_gro_receive()
208 		th = skb_gro_header_slow(skb, hlen, off);  in tcp_gro_receive()
209 		if (unlikely(!th))  in tcp_gro_receive()
216 	flags = tcp_flag_word(th);  in tcp_gro_receive()
224 		if (*(u32 *)&th->source ^ *(u32 *)&th2->source) {  in tcp_gro_receive()
240 	flush |= (__force int)(th->ack_seq ^ th2->ack_seq);  in tcp_gro_receive()
241 	for (i = sizeof(*th); i < thlen; i += 4)  in tcp_gro_receive()
242 		flush |= *(u32 *)((u8 *)th + i) ^  in tcp_gro_receive()
248 	flush |= (ntohl(th2->seq) + skb_gro_len(p)) ^ ntohl(th->seq);  in tcp_gro_receive()
276 	struct tcphdr *th = tcp_hdr(skb);  in tcp_gro_complete()  local
278 	skb->csum_start = (unsigned char *)th - skb->head;  in tcp_gro_complete()
284 	if (th->cwr)  in tcp_gro_complete()
307 	struct tcphdr *th = tcp_hdr(skb);  in tcp4_gro_complete()  local
309 	th->check = ~tcp_v4_check(skb->len - thoff, iph->saddr,  in tcp4_gro_complete()