31 int gre_add_protocol(const struct gre_protocol *proto, u8 version)  in gre_add_protocol()  argument
36 	return (cmpxchg((const struct gre_protocol **)&gre_proto[version], NULL, proto) == NULL) ?  in gre_add_protocol()
41 int gre_del_protocol(const struct gre_protocol *proto, u8 version)  in gre_del_protocol()  argument
48 	ret = (cmpxchg((const struct gre_protocol **)&gre_proto[version], proto, NULL) == proto) ?  in gre_del_protocol()
63 		     bool *csum_err, __be16 proto, int nhs)  in gre_parse_header()  argument
83 	tpi->proto = greh->protocol;  in gre_parse_header()
114 	if (greh->flags == 0 && tpi->proto == htons(ETH_P_WCCP)) {  in gre_parse_header()
121 		tpi->proto = proto;  in gre_parse_header()
148 	const struct gre_protocol *proto;  in gre_rcv()  local
160 	proto = rcu_dereference(gre_proto[ver]);  in gre_rcv()
161 	if (!proto || !proto->handler)  in gre_rcv()
163 	ret = proto->handler(skb);  in gre_rcv()
176 	const struct gre_protocol *proto;  in gre_err()  local
185 	proto = rcu_dereference(gre_proto[ver]);  in gre_err()
186 	if (proto && proto->err_handler)  in gre_err()
187 		proto->err_handler(skb, info);  in gre_err()