1 #ifndef included_vnet_gre_packet_h 2 #define included_vnet_gre_packet_h 21 #define foreach_gre_protocol \ 26 _ (0x8847, mpls_unicast) \ 31 #define _(n,f) GRE_PROTOCOL_##f = n, 41 #define GRE_FLAGS_CHECKSUM (1 << 15) 44 #define GRE_FLAGS_ROUTING (1 << 14) 45 #define GRE_FLAGS_KEY (1 << 13) 46 #define GRE_FLAGS_SEQUENCE (1 << 12) 47 #define GRE_FLAGS_STRICT_SOURCE_ROUTE (1 << 11) 50 #define GRE_SUPPORTED_VERSION 0 51 #define GRE_VERSION_MASK 0x7 #define foreach_gre_protocol