36 int gre_add_protocol(const struct gre_protocol *proto, u8 version)  in gre_add_protocol()  argument
41 	return (cmpxchg((const struct gre_protocol **)&gre_proto[version], NULL, proto) == NULL) ?  in gre_add_protocol()
46 int gre_del_protocol(const struct gre_protocol *proto, u8 version)  in gre_del_protocol()  argument
53 	ret = (cmpxchg((const struct gre_protocol **)&gre_proto[version], proto, NULL) == proto) ?  in gre_del_protocol()
74 	greh->protocol = tpi->proto;  in gre_build_header()
119 	tpi->proto = greh->protocol;  in parse_gre_header()
150 	if (greh->flags == 0 && tpi->proto == htons(ETH_P_WCCP)) {  in parse_gre_header()
151 		tpi->proto = htons(ETH_P_IP);  in parse_gre_header()
159 	return iptunnel_pull_header(skb, hdr_len, tpi->proto);  in parse_gre_header()
181 		struct gre_cisco_protocol *proto;  in gre_cisco_rcv()  local
184 		proto = rcu_dereference(gre_cisco_proto_list[i]);  in gre_cisco_rcv()
185 		if (!proto)  in gre_cisco_rcv()
187 		ret = proto->handler(skb, &tpi);  in gre_cisco_rcv()
241 		struct gre_cisco_protocol *proto;  in gre_cisco_err()  local
243 		proto = rcu_dereference(gre_cisco_proto_list[i]);  in gre_cisco_err()
244 		if (!proto)  in gre_cisco_err()
247 		if (proto->err_handler(skb, info, &tpi) == PACKET_RCVD)  in gre_cisco_err()
257 	const struct gre_protocol *proto;  in gre_rcv()  local
269 	proto = rcu_dereference(gre_proto[ver]);  in gre_rcv()
270 	if (!proto || !proto->handler)  in gre_rcv()
272 	ret = proto->handler(skb);  in gre_rcv()
285 	const struct gre_protocol *proto;  in gre_err()  local
293 	proto = rcu_dereference(gre_proto[ver]);  in gre_err()
294 	if (proto && proto->err_handler)  in gre_err()
295 		proto->err_handler(skb, info);  in gre_err()
312 	struct gre_cisco_protocol **proto = (struct gre_cisco_protocol **)  in gre_cisco_register()  local
315 	return (cmpxchg(proto, NULL, newp) == NULL) ? 0 : -EBUSY;  in gre_cisco_register()
321 	struct gre_cisco_protocol **proto = (struct gre_cisco_protocol **)  in gre_cisco_unregister()  local
325 	ret = (cmpxchg(proto, del_proto, NULL) == del_proto) ? 0 : -EINVAL;  in gre_cisco_unregister()