184 static int parse_gre_header(struct sk_buff *skb, struct tnl_ptk_info *tpi,  in parse_gre_header()  argument
198 	tpi->flags = gre_flags_to_tnl_flags(greh->flags);  in parse_gre_header()
199 	hdr_len = ip_gre_calc_hlen(tpi->flags);  in parse_gre_header()
205 	tpi->proto = greh->protocol;  in parse_gre_header()
220 		tpi->key = *options;  in parse_gre_header()
223 		tpi->key = 0;  in parse_gre_header()
226 		tpi->seq = *options;  in parse_gre_header()
229 		tpi->seq = 0;  in parse_gre_header()
235 	if (greh->flags == 0 && tpi->proto == htons(ETH_P_WCCP)) {  in parse_gre_header()
236 		tpi->proto = htons(ETH_P_IP);  in parse_gre_header()
247 		      const struct tnl_ptk_info *tpi)  in ipgre_err()  argument
299 	if (tpi->proto == htons(ETH_P_TEB))  in ipgre_err()
305 	t = ip_tunnel_lookup(itn, skb->dev->ifindex, tpi->flags,  in ipgre_err()
306 			     iph->daddr, iph->saddr, tpi->key);  in ipgre_err()
343 	struct tnl_ptk_info tpi;  in gre_err()  local
346 	if (parse_gre_header(skb, &tpi, &csum_err) < 0) {  in gre_err()
362 	ipgre_err(skb, info, &tpi);  in gre_err()
384 static int ipgre_rcv(struct sk_buff *skb, const struct tnl_ptk_info *tpi)  in ipgre_rcv()  argument
392 	if (tpi->proto == htons(ETH_P_TEB))  in ipgre_rcv()
398 	tunnel = ip_tunnel_lookup(itn, skb->dev->ifindex, tpi->flags,  in ipgre_rcv()
399 				  iph->saddr, iph->daddr, tpi->key);  in ipgre_rcv()
407 			flags = tpi->flags & (TUNNEL_CSUM | TUNNEL_KEY);  in ipgre_rcv()
408 			tun_id = key_to_tunnel_id(tpi->key);  in ipgre_rcv()
414 		ip_tunnel_rcv(tunnel, skb, tpi, tun_dst, log_ecn_error);  in ipgre_rcv()
422 	struct tnl_ptk_info tpi;  in gre_rcv()  local
434 	hdr_len = parse_gre_header(skb, &tpi, &csum_err);  in gre_rcv()
437 	if (iptunnel_pull_header(skb, hdr_len, tpi.proto) < 0)  in gre_rcv()
440 	if (ipgre_rcv(skb, &tpi) == PACKET_RCVD)  in gre_rcv()