Normal +%l=J!e8Ep Tţ i_I|+?%/* SPDX-License-Identifier: (GPL-2.0 WITH Linux-syscall-note) */ /* Copyright (C) B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich */ #ifndef _LINUX_BATADV_PACKET_H_ #define _LINUX_BATADV_PACKET_H_ #include #include #include /** * batadv_tp_is_error() - Check throughput meter return code for error * @n: throughput meter return code * * Return: 0 when not error was detected, != 0 otherwise */ #define batadv_tp_is_error(n) ((__u8)(n) > 127 ? 1 : 0) /** * enum batadv_packettype - types for batman-adv encapsulated packets * @BATADV_IV_OGM: originator messages for B.A.T.M.A.N. IV * @BATADV_BCAST: broadcast packets carrying broadcast payload * @BATADV_CODED: network coded packets * @BATADV_ELP: echo location packets for B.A.T.M.A.N. V * @BATADV_OGM2: originator messages for B.A.T.M.A.N. V * * @BATADV_UNICAST: unicast packets carrying unicast payload traffic * @BATADV_UNICAST_FRAG: unicast packets carrying a fragment of the original * payload packet * @BATADV_UNICAST_4ADDR: unicast packet including the originator address of * the sender * @BATADV_ICMP: unicast packet like IP ICMP used for ping or traceroute * @BATADV_UNICAST_TVLV: unicast packet carrying TVLV containers */ enum batadv_packettype { /* 0x00 - 0x3f: local packets or special rules for handling */ BATADV_IV_OGM = 0x00, BATADV_BCAST = 0x01, BATADV_CODED = 0x02, BATADV_ELP = 0x03, BATADV_OGM2 = 0x04, /* 0x40 - 0x7f: unicast */ #define BATADV_UNICAST_MIN 0x40 BATADV_UNICAST = 0x40, BATADV_UNICAST_FRAG = 0x41, BATADV_UNICAST_4ADDR = 0x42, BATADV_ICMP = 0x43, BATADV_UNICAST_TVLV = 0x44, #define BATADV_UNICAST_MAX 0x7f /* 0x80 - 0xff: reserved */ }; /** * enum batadv_subtype - packet subtype for unicast4addr * @BATADV_P_DATA: user payload * @BATADV_P_DAT_DHT_GET: DHT request message * @BATADV_P_DAT_DHT_PUT: DHT store message * @BATADV_P_DAT_CACHE_REPLY: ARP reply generated by DAT */ enum batadv_subtype { BATADV_P_DATA = 0x01, BATADV_P_DAT_DHT_GET = 0x02, BATADV_P_DAT_DHT_PUT = 0x03, BATADV_P_DAT_CACHE_REPLY = 0x04, }; /* this file is included by batctl which needs these defines */ #define BATADV_COMPAT_VERSION 15 /** * enum batadv_iv_flags - flags used in B.A.T.M.A.N. IV OGM packets * @BATADV_NOT_BEST_NEXT_HOP: flag is set when the ogm packet is forwarded and * was previously received from someone other than the best neighbor. * @BATADV_PRIMARIES_FIRST_HOP: flag unused. * @BATADV_DIRECTLINK: flag is for the first hop or if rebroadcasted from a * one hop neighbor on the interface where it was originally received. */ enum batadv_iv_flags { BATADV_NOT_BEST_NEXT_HOP = 1UL << 0, BATADV_PRIMARIES_FIRST_HOP = 1UL << 1, BATADV_DIRECTLINK = 1UL << 2, }; /** * enum batadv_icmp_packettype - ICMP message types * @BATADV_ECHO_REPLY: success reply to BATADV_ECHO_REQUEST * @BATADV_DESTINATION_UNREACHABLE: failure when route to destination not found * @BATADV_ECHO_REQUEST: request BATADV_ECHO_REPLY from destination * @BATADV_TTL_EXCEEDED: error after BATADV_ECHO_REQUEST traversed too many hops * @BATADV_PARAMETER_PROBLEM: return code for malformed messages * @BATADV_TP: throughput meter packet */ enum batadv_icmp_packettype { BATADV_ECHO_REPLY = 0, BATADV_DESTINATION_UNREACHABLE = 3, BATADV_ECHO_REQUEST = 8, BATADV_TTL_EXCEEDED = 11, BATADV_PARAMETER_PROBLEM = 12, BATADV_TP = 15, }; /** * enum batadv_mcast_flags - flags for multicast capabilities and settings * @BATADV_MCAST_WANT_ALL_UNSNOOPABLES: we want all packets destined for * 224.0.0.0/24 or ff02::1 * @BATADV_MCAST_WANT_ALL_IPV4: we want all IPv4 multicast packets * (both link-local and routable ones) * @BATADV_MCAST_WANT_ALL_IPV6: we want all IPv6 multicast packets * (both link-local and routable ones) * @BATADV_MCAST_WANT_NO_RTR4: we have no IPv4 multicast router and therefo