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- From: Sven Eckelmann <sven.eckelmann@openmesh.com>
- Date: Thu, 21 Dec 2017 10:17:41 +0100
- Subject: [PATCH] batman-adv: Convert packet.h to uapi header
- The header file is used by different userspace programs to inject packets
- or to decode sniffed packets. It should therefore be available to them as
- userspace header.
- Also other components in the kernel (like the flow dissector) require
- access to the packet definitions to be able to decode ETH_P_BATMAN ethernet
- packets.
- Signed-off-by: Sven Eckelmann <sven.eckelmann@openmesh.com>
- Signed-off-by: David S. Miller <davem@davemloft.net>
- ---
- rename net/batman-adv/packet.h => include/uapi/linux/batadv_packet.h (99%)
- --- a/MAINTAINERS
- +++ b/MAINTAINERS
- @@ -2551,6 +2551,7 @@ S: Maintained
- F: Documentation/ABI/testing/sysfs-class-net-batman-adv
- F: Documentation/ABI/testing/sysfs-class-net-mesh
- F: Documentation/networking/batman-adv.rst
- +F: include/uapi/linux/batadv_packet.h
- F: include/uapi/linux/batman_adv.h
- F: net/batman-adv/
-
- --- a/net/batman-adv/bat_iv_ogm.c
- +++ b/net/batman-adv/bat_iv_ogm.c
- @@ -52,6 +52,7 @@
- #include <linux/workqueue.h>
- #include <net/genetlink.h>
- #include <net/netlink.h>
- +#include <uapi/linux/batadv_packet.h>
- #include <uapi/linux/batman_adv.h>
-
- #include "bat_algo.h"
- @@ -63,7 +64,6 @@
- #include "netlink.h"
- #include "network-coding.h"
- #include "originator.h"
- -#include "packet.h"
- #include "routing.h"
- #include "send.h"
- #include "translation-table.h"
- --- a/net/batman-adv/bat_v.c
- +++ b/net/batman-adv/bat_v.c
- @@ -36,6 +36,7 @@
- #include <linux/workqueue.h>
- #include <net/genetlink.h>
- #include <net/netlink.h>
- +#include <uapi/linux/batadv_packet.h>
- #include <uapi/linux/batman_adv.h>
-
- #include "bat_algo.h"
- @@ -48,7 +49,6 @@
- #include "log.h"
- #include "netlink.h"
- #include "originator.h"
- -#include "packet.h"
-
- struct sk_buff;
-
- --- a/net/batman-adv/bat_v_elp.c
- +++ b/net/batman-adv/bat_v_elp.c
- @@ -41,13 +41,13 @@
- #include <linux/types.h>
- #include <linux/workqueue.h>
- #include <net/cfg80211.h>
- +#include <uapi/linux/batadv_packet.h>
-
- #include "bat_algo.h"
- #include "bat_v_ogm.h"
- #include "hard-interface.h"
- #include "log.h"
- #include "originator.h"
- -#include "packet.h"
- #include "routing.h"
- #include "send.h"
-
- --- a/net/batman-adv/bat_v_ogm.c
- +++ b/net/batman-adv/bat_v_ogm.c
- @@ -40,13 +40,13 @@
- #include <linux/string.h>
- #include <linux/types.h>
- #include <linux/workqueue.h>
- +#include <uapi/linux/batadv_packet.h>
-
- #include "bat_algo.h"
- #include "hard-interface.h"
- #include "hash.h"
- #include "log.h"
- #include "originator.h"
- -#include "packet.h"
- #include "routing.h"
- #include "send.h"
- #include "translation-table.h"
- --- a/net/batman-adv/bridge_loop_avoidance.c
- +++ b/net/batman-adv/bridge_loop_avoidance.c
- @@ -49,6 +49,7 @@
- #include <net/genetlink.h>
- #include <net/netlink.h>
- #include <net/sock.h>
- +#include <uapi/linux/batadv_packet.h>
- #include <uapi/linux/batman_adv.h>
-
- #include "hard-interface.h"
- @@ -56,7 +57,6 @@
- #include "log.h"
- #include "netlink.h"
- #include "originator.h"
- -#include "packet.h"
- #include "soft-interface.h"
- #include "sysfs.h"
- #include "translation-table.h"
- --- a/net/batman-adv/distributed-arp-table.h
- +++ b/net/batman-adv/distributed-arp-table.h
- @@ -23,9 +23,9 @@
- #include <linux/compiler.h>
- #include <linux/netdevice.h>
- #include <linux/types.h>
- +#include <uapi/linux/batadv_packet.h>
-
- #include "originator.h"
- -#include "packet.h"
-
- struct seq_file;
- struct sk_buff;
- --- a/net/batman-adv/fragmentation.c
- +++ b/net/batman-adv/fragmentation.c
- @@ -32,10 +32,10 @@
- #include <linux/slab.h>
- #include <linux/spinlock.h>
- #include <linux/string.h>
- +#include <uapi/linux/batadv_packet.h>
-
- #include "hard-interface.h"
- #include "originator.h"
- -#include "packet.h"
- #include "routing.h"
- #include "send.h"
- #include "soft-interface.h"
- --- a/net/batman-adv/gateway_client.c
- +++ b/net/batman-adv/gateway_client.c
- @@ -43,6 +43,7 @@
- #include <linux/stddef.h>
- #include <linux/udp.h>
- #include <net/sock.h>
- +#include <uapi/linux/batadv_packet.h>
- #include <uapi/linux/batman_adv.h>
-
- #include "gateway_common.h"
- @@ -50,7 +51,6 @@
- #include "log.h"
- #include "netlink.h"
- #include "originator.h"
- -#include "packet.h"
- #include "routing.h"
- #include "soft-interface.h"
- #include "sysfs.h"
- --- a/net/batman-adv/gateway_common.c
- +++ b/net/batman-adv/gateway_common.c
- @@ -26,10 +26,10 @@
- #include <linux/netdevice.h>
- #include <linux/stddef.h>
- #include <linux/string.h>
- +#include <uapi/linux/batadv_packet.h>
-
- #include "gateway_client.h"
- #include "log.h"
- -#include "packet.h"
- #include "tvlv.h"
-
- /**
- --- a/net/batman-adv/hard-interface.c
- +++ b/net/batman-adv/hard-interface.c
- @@ -37,6 +37,7 @@
- #include <linux/spinlock.h>
- #include <net/net_namespace.h>
- #include <net/rtnetlink.h>
- +#include <uapi/linux/batadv_packet.h>
-
- #include "bat_v.h"
- #include "bridge_loop_avoidance.h"
- @@ -45,7 +46,6 @@
- #include "gateway_client.h"
- #include "log.h"
- #include "originator.h"
- -#include "packet.h"
- #include "send.h"
- #include "soft-interface.h"
- #include "sysfs.h"
- --- a/net/batman-adv/icmp_socket.c
- +++ b/net/batman-adv/icmp_socket.c
- @@ -42,11 +42,11 @@
- #include <linux/string.h>
- #include <linux/uaccess.h>
- #include <linux/wait.h>
- +#include <uapi/linux/batadv_packet.h>
-
- #include "hard-interface.h"
- #include "log.h"
- #include "originator.h"
- -#include "packet.h"
- #include "send.h"
-
- static struct batadv_socket_client *batadv_socket_client_hash[256];
- --- a/net/batman-adv/main.c
- +++ b/net/batman-adv/main.c
- @@ -45,6 +45,7 @@
- #include <linux/workqueue.h>
- #include <net/dsfield.h>
- #include <net/rtnetlink.h>
- +#include <uapi/linux/batadv_packet.h>
- #include <uapi/linux/batman_adv.h>
-
- #include "bat_algo.h"
- @@ -62,7 +63,6 @@
- #include "netlink.h"
- #include "network-coding.h"
- #include "originator.h"
- -#include "packet.h"
- #include "routing.h"
- #include "send.h"
- #include "soft-interface.h"
- --- a/net/batman-adv/main.h
- +++ b/net/batman-adv/main.h
- @@ -190,8 +190,8 @@ enum batadv_uev_type {
- #include <linux/jiffies.h>
- #include <linux/percpu.h>
- #include <linux/types.h>
- +#include <uapi/linux/batadv_packet.h>
-
- -#include "packet.h"
- #include "types.h"
-
- struct net_device;
- --- a/net/batman-adv/multicast.c
- +++ b/net/batman-adv/multicast.c
- @@ -54,11 +54,11 @@
- #include <net/if_inet6.h>
- #include <net/ip.h>
- #include <net/ipv6.h>
- +#include <uapi/linux/batadv_packet.h>
-
- #include "hard-interface.h"
- #include "hash.h"
- #include "log.h"
- -#include "packet.h"
- #include "translation-table.h"
- #include "tvlv.h"
-
- --- a/net/batman-adv/netlink.c
- +++ b/net/batman-adv/netlink.c
- @@ -39,6 +39,7 @@
- #include <net/genetlink.h>
- #include <net/netlink.h>
- #include <net/sock.h>
- +#include <uapi/linux/batadv_packet.h>
- #include <uapi/linux/batman_adv.h>
-
- #include "bat_algo.h"
- @@ -46,7 +47,6 @@
- #include "gateway_client.h"
- #include "hard-interface.h"
- #include "originator.h"
- -#include "packet.h"
- #include "soft-interface.h"
- #include "tp_meter.h"
- #include "translation-table.h"
- --- a/net/batman-adv/network-coding.c
- +++ b/net/batman-adv/network-coding.c
- @@ -47,12 +47,12 @@
- #include <linux/stddef.h>
- #include <linux/string.h>
- #include <linux/workqueue.h>
- +#include <uapi/linux/batadv_packet.h>
-
- #include "hard-interface.h"
- #include "hash.h"
- #include "log.h"
- #include "originator.h"
- -#include "packet.h"
- #include "routing.h"
- #include "send.h"
- #include "tvlv.h"
- --- a/net/batman-adv/packet.h
- +++ /dev/null
- @@ -1,622 +0,0 @@
- -/* Copyright (C) 2007-2017 B.A.T.M.A.N. contributors:
- - *
- - * Marek Lindner, Simon Wunderlich
- - *
- - * This program is free software; you can redistribute it and/or
- - * modify it under the terms of version 2 of the GNU General Public
- - * License as published by the Free Software Foundation.
- - *
- - * This program is distributed in the hope that it will be useful, but
- - * WITHOUT ANY WARRANTY; without even the implied warranty of
- - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- - * General Public License for more details.
- - *
- - * You should have received a copy of the GNU General Public License
- - * along with this program; if not, see <http://www.gnu.org/licenses/>.
- - */
- -
- -#ifndef _NET_BATMAN_ADV_PACKET_H_
- -#define _NET_BATMAN_ADV_PACKET_H_
- -
- -#include <asm/byteorder.h>
- -#include <linux/if_ether.h>
- -#include <linux/types.h>
- -
- -#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 ogm packet is forwarded and was
- - * previously received from someone else 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,
- -};
- -
- -/* ICMP message types */
- -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
- - * @BATADV_MCAST_WANT_ALL_IPV6: we want all IPv6 multicast packets
- - */
- -enum batadv_mcast_flags {
- - BATADV_MCAST_WANT_ALL_UNSNOOPABLES = 1UL << 0,
- - BATADV_MCAST_WANT_ALL_IPV4 = 1UL << 1,
- - BATADV_MCAST_WANT_ALL_IPV6 = 1UL << 2,
- -};
- -
- -/* tt data subtypes */
- -#define BATADV_TT_DATA_TYPE_MASK 0x0F
- -
- -/**
- - * enum batadv_tt_data_flags - flags for tt data tvlv
- - * @BATADV_TT_OGM_DIFF: TT diff propagated through OGM
- - * @BATADV_TT_REQUEST: TT request message
- - * @BATADV_TT_RESPONSE: TT response message
- - * @BATADV_TT_FULL_TABLE: contains full table to replace existing table
- - */
- -enum batadv_tt_data_flags {
- - BATADV_TT_OGM_DIFF = 1UL << 0,
- - BATADV_TT_REQUEST = 1UL << 1,
- - BATADV_TT_RESPONSE = 1UL << 2,
- - BATADV_TT_FULL_TABLE = 1UL << 4,
- -};
- -
- -/**
- - * enum batadv_vlan_flags - flags for the four MSB of any vlan ID field
- - * @BATADV_VLAN_HAS_TAG: whether the field contains a valid vlan tag or not
- - */
- -enum batadv_vlan_flags {
- - BATADV_VLAN_HAS_TAG = 1UL << 15,
- -};
- -
- -/* claim frame types for the bridge loop avoidance */
- -enum batadv_bla_claimframe {
- - BATADV_CLAIM_TYPE_CLAIM = 0x00,
- - BATADV_CLAIM_TYPE_UNCLAIM = 0x01,
- - BATADV_CLAIM_TYPE_ANNOUNCE = 0x02,
- - BATADV_CLAIM_TYPE_REQUEST = 0x03,
- - BATADV_CLAIM_TYPE_LOOPDETECT = 0x04,
- -};
- -
- -/**
- - * enum batadv_tvlv_type - tvlv type definitions
- - * @BATADV_TVLV_GW: gateway tvlv
- - * @BATADV_TVLV_DAT: distributed arp table tvlv
- - * @BATADV_TVLV_NC: network coding tvlv
- - * @BATADV_TVLV_TT: translation table tvlv
- - * @BATADV_TVLV_ROAM: roaming advertisement tvlv
- - * @BATADV_TVLV_MCAST: multicast capability tvlv
- - */
- -enum batadv_tvlv_type {
- - BATADV_TVLV_GW = 0x01,
- - BATADV_TVLV_DAT = 0x02,
- - BATADV_TVLV_NC = 0x03,
- - BATADV_TVLV_TT = 0x04,
- - BATADV_TVLV_ROAM = 0x05,
- - BATADV_TVLV_MCAST = 0x06,
- -};
- -
- -#pragma pack(2)
- -/* the destination hardware field in the ARP frame is used to
- - * transport the claim type and the group id
- - */
- -struct batadv_bla_claim_dst {
- - __u8 magic[3]; /* FF:43:05 */
- - __u8 type; /* bla_claimframe */
- - __be16 group; /* group id */
- -};
- -
- -#pragma pack()
- -
- -/**
- - * struct batadv_ogm_packet - ogm (routing protocol) packet
- - * @packet_type: batman-adv packet type, part of the general header
- - * @version: batman-adv protocol version, part of the genereal header
- - * @ttl: time to live for this packet, part of the genereal header
- - * @flags: contains routing relevant flags - see enum batadv_iv_flags
- - * @seqno: sequence identification
- - * @orig: address of the source node
- - * @prev_sender: address of the previous sender
- - * @reserved: reserved byte for alignment
- - * @tq: transmission quality
- - * @tvlv_len: length of tvlv data following the ogm header
- - */
- -struct batadv_ogm_packet {
- - __u8 packet_type;
- - __u8 version;
- - __u8 ttl;
- - __u8 flags;
- - __be32 seqno;
- - __u8 orig[ETH_ALEN];
- - __u8 prev_sender[ETH_ALEN];
- - __u8 reserved;
- - __u8 tq;
- - __be16 tvlv_len;
- - /* __packed is not needed as the struct size is divisible by 4,
- - * and the largest data type in this struct has a size of 4.
- - */
- -};
- -
- -#define BATADV_OGM_HLEN sizeof(struct batadv_ogm_packet)
- -
- -/**
- - * struct batadv_ogm2_packet - ogm2 (routing protocol) packet
- - * @packet_type: batman-adv packet type, part of the general header
- - * @version: batman-adv protocol version, part of the general header
- - * @ttl: time to live for this packet, part of the general header
- - * @flags: reseved for routing relevant flags - currently always 0
- - * @seqno: sequence number
- - * @orig: originator mac address
- - * @tvlv_len: length of the appended tvlv buffer (in bytes)
- - * @throughput: the currently flooded path throughput
- - */
- -struct batadv_ogm2_packet {
- - __u8 packet_type;
- - __u8 version;
- - __u8 ttl;
- - __u8 flags;
- - __be32 seqno;
- - __u8 orig[ETH_ALEN];
- - __be16 tvlv_len;
- - __be32 throughput;
- - /* __packed is not needed as the struct size is divisible by 4,
- - * and the largest data type in this struct has a size of 4.
- - */
- -};
- -
- -#define BATADV_OGM2_HLEN sizeof(struct batadv_ogm2_packet)
- -
- -/**
- - * struct batadv_elp_packet - elp (neighbor discovery) packet
- - * @packet_type: batman-adv packet type, part of the general header
- - * @version: batman-adv protocol version, part of the genereal header
- - * @orig: originator mac address
- - * @seqno: sequence number
- - * @elp_interval: currently used ELP sending interval in ms
- - */
- -struct batadv_elp_packet {
- - __u8 packet_type;
- - __u8 version;
- - __u8 orig[ETH_ALEN];
- - __be32 seqno;
- - __be32 elp_interval;
- -};
- -
- -#define BATADV_ELP_HLEN sizeof(struct batadv_elp_packet)
- -
- -/**
- - * struct batadv_icmp_header - common members among all the ICMP packets
- - * @packet_type: batman-adv packet type, part of the general header
- - * @version: batman-adv protocol version, part of the genereal header
- - * @ttl: time to live for this packet, part of the genereal header
- - * @msg_type: ICMP packet type
- - * @dst: address of the destination node
- - * @orig: address of the source node
- - * @uid: local ICMP socket identifier
- - * @align: not used - useful for alignment purposes only
- - *
- - * This structure is used for ICMP packets parsing only and it is never sent
- - * over the wire. The alignment field at the end is there to ensure that
- - * members are padded the same way as they are in real packets.
- - */
- -struct batadv_icmp_header {
- - __u8 packet_type;
- - __u8 version;
- - __u8 ttl;
- - __u8 msg_type; /* see ICMP message types above */
- - __u8 dst[ETH_ALEN];
- - __u8 orig[ETH_ALEN];
- - __u8 uid;
- - __u8 align[3];
- -};
- -
- -/**
- - * struct batadv_icmp_packet - ICMP packet
- - * @packet_type: batman-adv packet type, part of the general header
- - * @version: batman-adv protocol version, part of the genereal header
- - * @ttl: time to live for this packet, part of the genereal header
- - * @msg_type: ICMP packet type
- - * @dst: address of the destination node
- - * @orig: address of the source node
- - * @uid: local ICMP socket identifier
- - * @reserved: not used - useful for alignment
- - * @seqno: ICMP sequence number
- - */
- -struct batadv_icmp_packet {
- - __u8 packet_type;
- - __u8 version;
- - __u8 ttl;
- - __u8 msg_type; /* see ICMP message types above */
- - __u8 dst[ETH_ALEN];
- - __u8 orig[ETH_ALEN];
- - __u8 uid;
- - __u8 reserved;
- - __be16 seqno;
- -};
- -
- -/**
- - * struct batadv_icmp_tp_packet - ICMP TP Meter packet
- - * @packet_type: batman-adv packet type, part of the general header
- - * @version: batman-adv protocol version, part of the genereal header
- - * @ttl: time to live for this packet, part of the genereal header
- - * @msg_type: ICMP packet type
- - * @dst: address of the destination node
- - * @orig: address of the source node
- - * @uid: local ICMP socket identifier
- - * @subtype: TP packet subtype (see batadv_icmp_tp_subtype)
- - * @session: TP session identifier
- - * @seqno: the TP sequence number
- - * @timestamp: time when the packet has been sent. This value is filled in a
- - * TP_MSG and echoed back in the next TP_ACK so that the sender can compute the
- - * RTT. Since it is read only by the host which wrote it, there is no need to
- - * store it using network order
- - */
- -struct batadv_icmp_tp_packet {
- - __u8 packet_type;
- - __u8 version;
- - __u8 ttl;
- - __u8 msg_type; /* see ICMP message types above */
- - __u8 dst[ETH_ALEN];
- - __u8 orig[ETH_ALEN];
- - __u8 uid;
- - __u8 subtype;
- - __u8 session[2];
- - __be32 seqno;
- - __be32 timestamp;
- -};
- -
- -/**
- - * enum batadv_icmp_tp_subtype - ICMP TP Meter packet subtypes
- - * @BATADV_TP_MSG: Msg from sender to receiver
- - * @BATADV_TP_ACK: acknowledgment from receiver to sender
- - */
- -enum batadv_icmp_tp_subtype {
- - BATADV_TP_MSG = 0,
- - BATADV_TP_ACK,
- -};
- -
- -#define BATADV_RR_LEN 16
- -
- -/**
- - * struct batadv_icmp_packet_rr - ICMP RouteRecord packet
- - * @packet_type: batman-adv packet type, part of the general header
- - * @version: batman-adv protocol version, part of the genereal header
- - * @ttl: time to live for this packet, part of the genereal header
- - * @msg_type: ICMP packet type
- - * @dst: address of the destination node
- - * @orig: address of the source node
- - * @uid: local ICMP socket identifier
- - * @rr_cur: number of entries the rr array
- - * @seqno: ICMP sequence number
- - * @rr: route record array
- - */
- -struct batadv_icmp_packet_rr {
- - __u8 packet_type;
- - __u8 version;
- - __u8 ttl;
- - __u8 msg_type; /* see ICMP message types above */
- - __u8 dst[ETH_ALEN];
- - __u8 orig[ETH_ALEN];
- - __u8 uid;
- - __u8 rr_cur;
- - __be16 seqno;
- - __u8 rr[BATADV_RR_LEN][ETH_ALEN];
- -};
- -
- -#define BATADV_ICMP_MAX_PACKET_SIZE sizeof(struct batadv_icmp_packet_rr)
- -
- -/* All packet headers in front of an ethernet header have to be completely
- - * divisible by 2 but not by 4 to make the payload after the ethernet
- - * header again 4 bytes boundary aligned.
- - *
- - * A packing of 2 is necessary to avoid extra padding at the end of the struct
- - * caused by a structure member which is larger than two bytes. Otherwise
- - * the structure would not fulfill the previously mentioned rule to avoid the
- - * misalignment of the payload after the ethernet header. It may also lead to
- - * leakage of information when the padding it not initialized before sending.
- - */
- -#pragma pack(2)
- -
- -/**
- - * struct batadv_unicast_packet - unicast packet for network payload
- - * @packet_type: batman-adv packet type, part of the general header
- - * @version: batman-adv protocol version, part of the genereal header
- - * @ttl: time to live for this packet, part of the genereal header
- - * @ttvn: translation table version number
- - * @dest: originator destination of the unicast packet
- - */
- -struct batadv_unicast_packet {
- - __u8 packet_type;
- - __u8 version;
- - __u8 ttl;
- - __u8 ttvn; /* destination translation table version number */
- - __u8 dest[ETH_ALEN];
- - /* "4 bytes boundary + 2 bytes" long to make the payload after the
- - * following ethernet header again 4 bytes boundary aligned
- - */
- -};
- -
- -/**
- - * struct batadv_unicast_4addr_packet - extended unicast packet
- - * @u: common unicast packet header
- - * @src: address of the source
- - * @subtype: packet subtype
- - * @reserved: reserved byte for alignment
- - */
- -struct batadv_unicast_4addr_packet {
- - struct batadv_unicast_packet u;
- - __u8 src[ETH_ALEN];
- - __u8 subtype;
- - __u8 reserved;
- - /* "4 bytes boundary + 2 bytes" long to make the payload after the
- - * following ethernet header again 4 bytes boundary aligned
- - */
- -};
- -
- -/**
- - * struct batadv_frag_packet - fragmented packet
- - * @packet_type: batman-adv packet type, part of the general header
- - * @version: batman-adv protocol version, part of the genereal header
- - * @ttl: time to live for this packet, part of the genereal header
- - * @dest: final destination used when routing fragments
- - * @orig: originator of the fragment used when merging the packet
- - * @no: fragment number within this sequence
- - * @priority: priority of frame, from ToS IP precedence or 802.1p
- - * @reserved: reserved byte for alignment
- - * @seqno: sequence identification
- - * @total_size: size of the merged packet
- - */
- -struct batadv_frag_packet {
- - __u8 packet_type;
- - __u8 version; /* batman version field */
- - __u8 ttl;
- -#if defined(__BIG_ENDIAN_BITFIELD)
- - __u8 no:4;
- - __u8 priority:3;
- - __u8 reserved:1;
- -#elif defined(__LITTLE_ENDIAN_BITFIELD)
- - __u8 reserved:1;
- - __u8 priority:3;
- - __u8 no:4;
- -#else
- -#error "unknown bitfield endianness"
- -#endif
- - __u8 dest[ETH_ALEN];
- - __u8 orig[ETH_ALEN];
- - __be16 seqno;
- - __be16 total_size;
- -};
- -
- -/**
- - * struct batadv_bcast_packet - broadcast packet for network payload
- - * @packet_type: batman-adv packet type, part of the general header
- - * @version: batman-adv protocol version, part of the genereal header
- - * @ttl: time to live for this packet, part of the genereal header
- - * @reserved: reserved byte for alignment
- - * @seqno: sequence identification
- - * @orig: originator of the broadcast packet
- - */
- -struct batadv_bcast_packet {
- - __u8 packet_type;
- - __u8 version; /* batman version field */
- - __u8 ttl;
- - __u8 reserved;
- - __be32 seqno;
- - __u8 orig[ETH_ALEN];
- - /* "4 bytes boundary + 2 bytes" long to make the payload after the
- - * following ethernet header again 4 bytes boundary aligned
- - */
- -};
- -
- -/**
- - * struct batadv_coded_packet - network coded packet
- - * @packet_type: batman-adv packet type, part of the general header
- - * @version: batman-adv protocol version, part of the genereal header
- - * @ttl: time to live for this packet, part of the genereal header
- - * @first_source: original source of first included packet
- - * @first_orig_dest: original destinal of first included packet
- - * @first_crc: checksum of first included packet
- - * @first_ttvn: tt-version number of first included packet
- - * @second_ttl: ttl of second packet
- - * @second_dest: second receiver of this coded packet
- - * @second_source: original source of second included packet
- - * @second_orig_dest: original destination of second included packet
- - * @second_crc: checksum of second included packet
- - * @second_ttvn: tt version number of second included packet
- - * @coded_len: length of network coded part of the payload
- - */
- -struct batadv_coded_packet {
- - __u8 packet_type;
- - __u8 version; /* batman version field */
- - __u8 ttl;
- - __u8 first_ttvn;
- - /* __u8 first_dest[ETH_ALEN]; - saved in mac header destination */
- - __u8 first_source[ETH_ALEN];
- - __u8 first_orig_dest[ETH_ALEN];
- - __be32 first_crc;
- - __u8 second_ttl;
- - __u8 second_ttvn;
- - __u8 second_dest[ETH_ALEN];
- - __u8 second_source[ETH_ALEN];
- - __u8 second_orig_dest[ETH_ALEN];
- - __be32 second_crc;
- - __be16 coded_len;
- -};
- -
- -#pragma pack()
- -
- -/**
- - * struct batadv_unicast_tvlv_packet - generic unicast packet with tvlv payload
- - * @packet_type: batman-adv packet type, part of the general header
- - * @version: batman-adv protocol version, part of the genereal header
- - * @ttl: time to live for this packet, part of the genereal header
- - * @reserved: reserved field (for packet alignment)
- - * @src: address of the source
- - * @dst: address of the destination
- - * @tvlv_len: length of tvlv data following the unicast tvlv header
- - * @align: 2 bytes to align the header to a 4 byte boundary
- - */
- -struct batadv_unicast_tvlv_packet {
- - __u8 packet_type;
- - __u8 version; /* batman version field */
- - __u8 ttl;
- - __u8 reserved;
- - __u8 dst[ETH_ALEN];
- - __u8 src[ETH_ALEN];
- - __be16 tvlv_len;
- - __u16 align;
- -};
- -
- -/**
- - * struct batadv_tvlv_hdr - base tvlv header struct
- - * @type: tvlv container type (see batadv_tvlv_type)
- - * @version: tvlv container version
- - * @len: tvlv container length
- - */
- -struct batadv_tvlv_hdr {
- - __u8 type;
- - __u8 version;
- - __be16 len;
- -};
- -
- -/**
- - * struct batadv_tvlv_gateway_data - gateway data propagated through gw tvlv
- - * container
- - * @bandwidth_down: advertised uplink download bandwidth
- - * @bandwidth_up: advertised uplink upload bandwidth
- - */
- -struct batadv_tvlv_gateway_data {
- - __be32 bandwidth_down;
- - __be32 bandwidth_up;
- -};
- -
- -/**
- - * struct batadv_tvlv_tt_data - tt data propagated through the tt tvlv container
- - * @flags: translation table flags (see batadv_tt_data_flags)
- - * @ttvn: translation table version number
- - * @num_vlan: number of announced VLANs. In the TVLV this struct is followed by
- - * one batadv_tvlv_tt_vlan_data object per announced vlan
- - */
- -struct batadv_tvlv_tt_data {
- - __u8 flags;
- - __u8 ttvn;
- - __be16 num_vlan;
- -};
- -
- -/**
- - * struct batadv_tvlv_tt_vlan_data - vlan specific tt data propagated through
- - * the tt tvlv container
- - * @crc: crc32 checksum of the entries belonging to this vlan
- - * @vid: vlan identifier
- - * @reserved: unused, useful for alignment purposes
- - */
- -struct batadv_tvlv_tt_vlan_data {
- - __be32 crc;
- - __be16 vid;
- - __u16 reserved;
- -};
- -
- -/**
- - * struct batadv_tvlv_tt_change - translation table diff data
- - * @flags: status indicators concerning the non-mesh client (see
- - * batadv_tt_client_flags)
- - * @reserved: reserved field - useful for alignment purposes only
- - * @addr: mac address of non-mesh client that triggered this tt change
- - * @vid: VLAN identifier
- - */
- -struct batadv_tvlv_tt_change {
- - __u8 flags;
- - __u8 reserved[3];
- - __u8 addr[ETH_ALEN];
- - __be16 vid;
- -};
- -
- -/**
- - * struct batadv_tvlv_roam_adv - roaming advertisement
- - * @client: mac address of roaming client
- - * @vid: VLAN identifier
- - */
- -struct batadv_tvlv_roam_adv {
- - __u8 client[ETH_ALEN];
- - __be16 vid;
- -};
- -
- -/**
- - * struct batadv_tvlv_mcast_data - payload of a multicast tvlv
- - * @flags: multicast flags announced by the orig node
- - * @reserved: reserved field
- - */
- -struct batadv_tvlv_mcast_data {
- - __u8 flags;
- - __u8 reserved[3];
- -};
- -
- -#endif /* _NET_BATMAN_ADV_PACKET_H_ */
- --- a/net/batman-adv/routing.c
- +++ b/net/batman-adv/routing.c
- @@ -33,6 +33,7 @@
- #include <linux/skbuff.h>
- #include <linux/spinlock.h>
- #include <linux/stddef.h>
- +#include <uapi/linux/batadv_packet.h>
-
- #include "bitarray.h"
- #include "bridge_loop_avoidance.h"
- @@ -43,7 +44,6 @@
- #include "log.h"
- #include "network-coding.h"
- #include "originator.h"
- -#include "packet.h"
- #include "send.h"
- #include "soft-interface.h"
- #include "tp_meter.h"
- --- a/net/batman-adv/send.h
- +++ b/net/batman-adv/send.h
- @@ -23,8 +23,7 @@
- #include <linux/compiler.h>
- #include <linux/spinlock.h>
- #include <linux/types.h>
- -
- -#include "packet.h"
- +#include <uapi/linux/batadv_packet.h>
-
- struct sk_buff;
-
- --- a/net/batman-adv/soft-interface.c
- +++ b/net/batman-adv/soft-interface.c
- @@ -48,6 +48,7 @@
- #include <linux/stddef.h>
- #include <linux/string.h>
- #include <linux/types.h>
- +#include <uapi/linux/batadv_packet.h>
-
- #include "bat_algo.h"
- #include "bridge_loop_avoidance.h"
- @@ -59,7 +60,6 @@
- #include "multicast.h"
- #include "network-coding.h"
- #include "originator.h"
- -#include "packet.h"
- #include "send.h"
- #include "sysfs.h"
- #include "translation-table.h"
- --- a/net/batman-adv/sysfs.c
- +++ b/net/batman-adv/sysfs.c
- @@ -37,6 +37,7 @@
- #include <linux/string.h>
- #include <linux/stringify.h>
- #include <linux/workqueue.h>
- +#include <uapi/linux/batadv_packet.h>
-
- #include "bridge_loop_avoidance.h"
- #include "distributed-arp-table.h"
- @@ -45,7 +46,6 @@
- #include "hard-interface.h"
- #include "log.h"
- #include "network-coding.h"
- -#include "packet.h"
- #include "soft-interface.h"
-
- static struct net_device *batadv_kobj_to_netdev(struct kobject *obj)
- --- a/net/batman-adv/tp_meter.c
- +++ b/net/batman-adv/tp_meter.c
- @@ -48,13 +48,13 @@
- #include <linux/timer.h>
- #include <linux/wait.h>
- #include <linux/workqueue.h>
- +#include <uapi/linux/batadv_packet.h>
- #include <uapi/linux/batman_adv.h>
-
- #include "hard-interface.h"
- #include "log.h"
- #include "netlink.h"
- #include "originator.h"
- -#include "packet.h"
- #include "send.h"
-
- /**
- --- a/net/batman-adv/translation-table.c
- +++ b/net/batman-adv/translation-table.c
- @@ -50,6 +50,7 @@
- #include <net/genetlink.h>
- #include <net/netlink.h>
- #include <net/sock.h>
- +#include <uapi/linux/batadv_packet.h>
- #include <uapi/linux/batman_adv.h>
-
- #include "bridge_loop_avoidance.h"
- @@ -58,7 +59,6 @@
- #include "log.h"
- #include "netlink.h"
- #include "originator.h"
- -#include "packet.h"
- #include "soft-interface.h"
- #include "tvlv.h"
-
- --- a/net/batman-adv/tvlv.c
- +++ b/net/batman-adv/tvlv.c
- @@ -35,9 +35,9 @@
- #include <linux/stddef.h>
- #include <linux/string.h>
- #include <linux/types.h>
- +#include <uapi/linux/batadv_packet.h>
-
- #include "originator.h"
- -#include "packet.h"
- #include "send.h"
- #include "tvlv.h"
-
- --- a/net/batman-adv/types.h
- +++ b/net/batman-adv/types.h
- @@ -35,10 +35,9 @@
- #include <linux/types.h>
- #include <linux/wait.h>
- #include <linux/workqueue.h>
- +#include <uapi/linux/batadv_packet.h>
- #include <uapi/linux/batman_adv.h>
-
- -#include "packet.h"
- -
- struct seq_file;
-
- #ifdef CONFIG_BATMAN_ADV_DAT
- --- /dev/null
- +++ b/include/uapi/linux/batadv_packet.h
- @@ -0,0 +1,623 @@
- +/* SPDX-License-Identifier: (GPL-2.0 WITH Linux-syscall-note) */
- +/* Copyright (C) 2007-2017 B.A.T.M.A.N. contributors:
- + *
- + * Marek Lindner, Simon Wunderlich
- + *
- + * This program is free software; you can redistribute it and/or
- + * modify it under the terms of version 2 of the GNU General Public
- + * License as published by the Free Software Foundation.
- + *
- + * This program is distributed in the hope that it will be useful, but
- + * WITHOUT ANY WARRANTY; without even the implied warranty of
- + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- + * General Public License for more details.
- + *
- + * You should have received a copy of the GNU General Public License
- + * along with this program; if not, see <http://www.gnu.org/licenses/>.
- + */
- +
- +#ifndef _UAPI_LINUX_BATADV_PACKET_H_
- +#define _UAPI_LINUX_BATADV_PACKET_H_
- +
- +#include <asm/byteorder.h>
- +#include <linux/if_ether.h>
- +#include <linux/types.h>
- +
- +#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 ogm packet is forwarded and was
- + * previously received from someone else 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,
- +};
- +
- +/* ICMP message types */
- +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
- + * @BATADV_MCAST_WANT_ALL_IPV6: we want all IPv6 multicast packets
- + */
- +enum batadv_mcast_flags {
- + BATADV_MCAST_WANT_ALL_UNSNOOPABLES = 1UL << 0,
- + BATADV_MCAST_WANT_ALL_IPV4 = 1UL << 1,
- + BATADV_MCAST_WANT_ALL_IPV6 = 1UL << 2,
- +};
- +
- +/* tt data subtypes */
- +#define BATADV_TT_DATA_TYPE_MASK 0x0F
- +
- +/**
- + * enum batadv_tt_data_flags - flags for tt data tvlv
- + * @BATADV_TT_OGM_DIFF: TT diff propagated through OGM
- + * @BATADV_TT_REQUEST: TT request message
- + * @BATADV_TT_RESPONSE: TT response message
- + * @BATADV_TT_FULL_TABLE: contains full table to replace existing table
- + */
- +enum batadv_tt_data_flags {
- + BATADV_TT_OGM_DIFF = 1UL << 0,
- + BATADV_TT_REQUEST = 1UL << 1,
- + BATADV_TT_RESPONSE = 1UL << 2,
- + BATADV_TT_FULL_TABLE = 1UL << 4,
- +};
- +
- +/**
- + * enum batadv_vlan_flags - flags for the four MSB of any vlan ID field
- + * @BATADV_VLAN_HAS_TAG: whether the field contains a valid vlan tag or not
- + */
- +enum batadv_vlan_flags {
- + BATADV_VLAN_HAS_TAG = 1UL << 15,
- +};
- +
- +/* claim frame types for the bridge loop avoidance */
- +enum batadv_bla_claimframe {
- + BATADV_CLAIM_TYPE_CLAIM = 0x00,
- + BATADV_CLAIM_TYPE_UNCLAIM = 0x01,
- + BATADV_CLAIM_TYPE_ANNOUNCE = 0x02,
- + BATADV_CLAIM_TYPE_REQUEST = 0x03,
- + BATADV_CLAIM_TYPE_LOOPDETECT = 0x04,
- +};
- +
- +/**
- + * enum batadv_tvlv_type - tvlv type definitions
- + * @BATADV_TVLV_GW: gateway tvlv
- + * @BATADV_TVLV_DAT: distributed arp table tvlv
- + * @BATADV_TVLV_NC: network coding tvlv
- + * @BATADV_TVLV_TT: translation table tvlv
- + * @BATADV_TVLV_ROAM: roaming advertisement tvlv
- + * @BATADV_TVLV_MCAST: multicast capability tvlv
- + */
- +enum batadv_tvlv_type {
- + BATADV_TVLV_GW = 0x01,
- + BATADV_TVLV_DAT = 0x02,
- + BATADV_TVLV_NC = 0x03,
- + BATADV_TVLV_TT = 0x04,
- + BATADV_TVLV_ROAM = 0x05,
- + BATADV_TVLV_MCAST = 0x06,
- +};
- +
- +#pragma pack(2)
- +/* the destination hardware field in the ARP frame is used to
- + * transport the claim type and the group id
- + */
- +struct batadv_bla_claim_dst {
- + __u8 magic[3]; /* FF:43:05 */
- + __u8 type; /* bla_claimframe */
- + __be16 group; /* group id */
- +};
- +
- +#pragma pack()
- +
- +/**
- + * struct batadv_ogm_packet - ogm (routing protocol) packet
- + * @packet_type: batman-adv packet type, part of the general header
- + * @version: batman-adv protocol version, part of the genereal header
- + * @ttl: time to live for this packet, part of the genereal header
- + * @flags: contains routing relevant flags - see enum batadv_iv_flags
- + * @seqno: sequence identification
- + * @orig: address of the source node
- + * @prev_sender: address of the previous sender
- + * @reserved: reserved byte for alignment
- + * @tq: transmission quality
- + * @tvlv_len: length of tvlv data following the ogm header
- + */
- +struct batadv_ogm_packet {
- + __u8 packet_type;
- + __u8 version;
- + __u8 ttl;
- + __u8 flags;
- + __be32 seqno;
- + __u8 orig[ETH_ALEN];
- + __u8 prev_sender[ETH_ALEN];
- + __u8 reserved;
- + __u8 tq;
- + __be16 tvlv_len;
- + /* __packed is not needed as the struct size is divisible by 4,
- + * and the largest data type in this struct has a size of 4.
- + */
- +};
- +
- +#define BATADV_OGM_HLEN sizeof(struct batadv_ogm_packet)
- +
- +/**
- + * struct batadv_ogm2_packet - ogm2 (routing protocol) packet
- + * @packet_type: batman-adv packet type, part of the general header
- + * @version: batman-adv protocol version, part of the general header
- + * @ttl: time to live for this packet, part of the general header
- + * @flags: reseved for routing relevant flags - currently always 0
- + * @seqno: sequence number
- + * @orig: originator mac address
- + * @tvlv_len: length of the appended tvlv buffer (in bytes)
- + * @throughput: the currently flooded path throughput
- + */
- +struct batadv_ogm2_packet {
- + __u8 packet_type;
- + __u8 version;
- + __u8 ttl;
- + __u8 flags;
- + __be32 seqno;
- + __u8 orig[ETH_ALEN];
- + __be16 tvlv_len;
- + __be32 throughput;
- + /* __packed is not needed as the struct size is divisible by 4,
- + * and the largest data type in this struct has a size of 4.
- + */
- +};
- +
- +#define BATADV_OGM2_HLEN sizeof(struct batadv_ogm2_packet)
- +
- +/**
- + * struct batadv_elp_packet - elp (neighbor discovery) packet
- + * @packet_type: batman-adv packet type, part of the general header
- + * @version: batman-adv protocol version, part of the genereal header
- + * @orig: originator mac address
- + * @seqno: sequence number
- + * @elp_interval: currently used ELP sending interval in ms
- + */
- +struct batadv_elp_packet {
- + __u8 packet_type;
- + __u8 version;
- + __u8 orig[ETH_ALEN];
- + __be32 seqno;
- + __be32 elp_interval;
- +};
- +
- +#define BATADV_ELP_HLEN sizeof(struct batadv_elp_packet)
- +
- +/**
- + * struct batadv_icmp_header - common members among all the ICMP packets
- + * @packet_type: batman-adv packet type, part of the general header
- + * @version: batman-adv protocol version, part of the genereal header
- + * @ttl: time to live for this packet, part of the genereal header
- + * @msg_type: ICMP packet type
- + * @dst: address of the destination node
- + * @orig: address of the source node
- + * @uid: local ICMP socket identifier
- + * @align: not used - useful for alignment purposes only
- + *
- + * This structure is used for ICMP packets parsing only and it is never sent
- + * over the wire. The alignment field at the end is there to ensure that
- + * members are padded the same way as they are in real packets.
- + */
- +struct batadv_icmp_header {
- + __u8 packet_type;
- + __u8 version;
- + __u8 ttl;
- + __u8 msg_type; /* see ICMP message types above */
- + __u8 dst[ETH_ALEN];
- + __u8 orig[ETH_ALEN];
- + __u8 uid;
- + __u8 align[3];
- +};
- +
- +/**
- + * struct batadv_icmp_packet - ICMP packet
- + * @packet_type: batman-adv packet type, part of the general header
- + * @version: batman-adv protocol version, part of the genereal header
- + * @ttl: time to live for this packet, part of the genereal header
- + * @msg_type: ICMP packet type
- + * @dst: address of the destination node
- + * @orig: address of the source node
- + * @uid: local ICMP socket identifier
- + * @reserved: not used - useful for alignment
- + * @seqno: ICMP sequence number
- + */
- +struct batadv_icmp_packet {
- + __u8 packet_type;
- + __u8 version;
- + __u8 ttl;
- + __u8 msg_type; /* see ICMP message types above */
- + __u8 dst[ETH_ALEN];
- + __u8 orig[ETH_ALEN];
- + __u8 uid;
- + __u8 reserved;
- + __be16 seqno;
- +};
- +
- +/**
- + * struct batadv_icmp_tp_packet - ICMP TP Meter packet
- + * @packet_type: batman-adv packet type, part of the general header
- + * @version: batman-adv protocol version, part of the genereal header
- + * @ttl: time to live for this packet, part of the genereal header
- + * @msg_type: ICMP packet type
- + * @dst: address of the destination node
- + * @orig: address of the source node
- + * @uid: local ICMP socket identifier
- + * @subtype: TP packet subtype (see batadv_icmp_tp_subtype)
- + * @session: TP session identifier
- + * @seqno: the TP sequence number
- + * @timestamp: time when the packet has been sent. This value is filled in a
- + * TP_MSG and echoed back in the next TP_ACK so that the sender can compute the
- + * RTT. Since it is read only by the host which wrote it, there is no need to
- + * store it using network order
- + */
- +struct batadv_icmp_tp_packet {
- + __u8 packet_type;
- + __u8 version;
- + __u8 ttl;
- + __u8 msg_type; /* see ICMP message types above */
- + __u8 dst[ETH_ALEN];
- + __u8 orig[ETH_ALEN];
- + __u8 uid;
- + __u8 subtype;
- + __u8 session[2];
- + __be32 seqno;
- + __be32 timestamp;
- +};
- +
- +/**
- + * enum batadv_icmp_tp_subtype - ICMP TP Meter packet subtypes
- + * @BATADV_TP_MSG: Msg from sender to receiver
- + * @BATADV_TP_ACK: acknowledgment from receiver to sender
- + */
- +enum batadv_icmp_tp_subtype {
- + BATADV_TP_MSG = 0,
- + BATADV_TP_ACK,
- +};
- +
- +#define BATADV_RR_LEN 16
- +
- +/**
- + * struct batadv_icmp_packet_rr - ICMP RouteRecord packet
- + * @packet_type: batman-adv packet type, part of the general header
- + * @version: batman-adv protocol version, part of the genereal header
- + * @ttl: time to live for this packet, part of the genereal header
- + * @msg_type: ICMP packet type
- + * @dst: address of the destination node
- + * @orig: address of the source node
- + * @uid: local ICMP socket identifier
- + * @rr_cur: number of entries the rr array
- + * @seqno: ICMP sequence number
- + * @rr: route record array
- + */
- +struct batadv_icmp_packet_rr {
- + __u8 packet_type;
- + __u8 version;
- + __u8 ttl;
- + __u8 msg_type; /* see ICMP message types above */
- + __u8 dst[ETH_ALEN];
- + __u8 orig[ETH_ALEN];
- + __u8 uid;
- + __u8 rr_cur;
- + __be16 seqno;
- + __u8 rr[BATADV_RR_LEN][ETH_ALEN];
- +};
- +
- +#define BATADV_ICMP_MAX_PACKET_SIZE sizeof(struct batadv_icmp_packet_rr)
- +
- +/* All packet headers in front of an ethernet header have to be completely
- + * divisible by 2 but not by 4 to make the payload after the ethernet
- + * header again 4 bytes boundary aligned.
- + *
- + * A packing of 2 is necessary to avoid extra padding at the end of the struct
- + * caused by a structure member which is larger than two bytes. Otherwise
- + * the structure would not fulfill the previously mentioned rule to avoid the
- + * misalignment of the payload after the ethernet header. It may also lead to
- + * leakage of information when the padding it not initialized before sending.
- + */
- +#pragma pack(2)
- +
- +/**
- + * struct batadv_unicast_packet - unicast packet for network payload
- + * @packet_type: batman-adv packet type, part of the general header
- + * @version: batman-adv protocol version, part of the genereal header
- + * @ttl: time to live for this packet, part of the genereal header
- + * @ttvn: translation table version number
- + * @dest: originator destination of the unicast packet
- + */
- +struct batadv_unicast_packet {
- + __u8 packet_type;
- + __u8 version;
- + __u8 ttl;
- + __u8 ttvn; /* destination translation table version number */
- + __u8 dest[ETH_ALEN];
- + /* "4 bytes boundary + 2 bytes" long to make the payload after the
- + * following ethernet header again 4 bytes boundary aligned
- + */
- +};
- +
- +/**
- + * struct batadv_unicast_4addr_packet - extended unicast packet
- + * @u: common unicast packet header
- + * @src: address of the source
- + * @subtype: packet subtype
- + * @reserved: reserved byte for alignment
- + */
- +struct batadv_unicast_4addr_packet {
- + struct batadv_unicast_packet u;
- + __u8 src[ETH_ALEN];
- + __u8 subtype;
- + __u8 reserved;
- + /* "4 bytes boundary + 2 bytes" long to make the payload after the
- + * following ethernet header again 4 bytes boundary aligned
- + */
- +};
- +
- +/**
- + * struct batadv_frag_packet - fragmented packet
- + * @packet_type: batman-adv packet type, part of the general header
- + * @version: batman-adv protocol version, part of the genereal header
- + * @ttl: time to live for this packet, part of the genereal header
- + * @dest: final destination used when routing fragments
- + * @orig: originator of the fragment used when merging the packet
- + * @no: fragment number within this sequence
- + * @priority: priority of frame, from ToS IP precedence or 802.1p
- + * @reserved: reserved byte for alignment
- + * @seqno: sequence identification
- + * @total_size: size of the merged packet
- + */
- +struct batadv_frag_packet {
- + __u8 packet_type;
- + __u8 version; /* batman version field */
- + __u8 ttl;
- +#if defined(__BIG_ENDIAN_BITFIELD)
- + __u8 no:4;
- + __u8 priority:3;
- + __u8 reserved:1;
- +#elif defined(__LITTLE_ENDIAN_BITFIELD)
- + __u8 reserved:1;
- + __u8 priority:3;
- + __u8 no:4;
- +#else
- +#error "unknown bitfield endianness"
- +#endif
- + __u8 dest[ETH_ALEN];
- + __u8 orig[ETH_ALEN];
- + __be16 seqno;
- + __be16 total_size;
- +};
- +
- +/**
- + * struct batadv_bcast_packet - broadcast packet for network payload
- + * @packet_type: batman-adv packet type, part of the general header
- + * @version: batman-adv protocol version, part of the genereal header
- + * @ttl: time to live for this packet, part of the genereal header
- + * @reserved: reserved byte for alignment
- + * @seqno: sequence identification
- + * @orig: originator of the broadcast packet
- + */
- +struct batadv_bcast_packet {
- + __u8 packet_type;
- + __u8 version; /* batman version field */
- + __u8 ttl;
- + __u8 reserved;
- + __be32 seqno;
- + __u8 orig[ETH_ALEN];
- + /* "4 bytes boundary + 2 bytes" long to make the payload after the
- + * following ethernet header again 4 bytes boundary aligned
- + */
- +};
- +
- +/**
- + * struct batadv_coded_packet - network coded packet
- + * @packet_type: batman-adv packet type, part of the general header
- + * @version: batman-adv protocol version, part of the genereal header
- + * @ttl: time to live for this packet, part of the genereal header
- + * @first_source: original source of first included packet
- + * @first_orig_dest: original destinal of first included packet
- + * @first_crc: checksum of first included packet
- + * @first_ttvn: tt-version number of first included packet
- + * @second_ttl: ttl of second packet
- + * @second_dest: second receiver of this coded packet
- + * @second_source: original source of second included packet
- + * @second_orig_dest: original destination of second included packet
- + * @second_crc: checksum of second included packet
- + * @second_ttvn: tt version number of second included packet
- + * @coded_len: length of network coded part of the payload
- + */
- +struct batadv_coded_packet {
- + __u8 packet_type;
- + __u8 version; /* batman version field */
- + __u8 ttl;
- + __u8 first_ttvn;
- + /* __u8 first_dest[ETH_ALEN]; - saved in mac header destination */
- + __u8 first_source[ETH_ALEN];
- + __u8 first_orig_dest[ETH_ALEN];
- + __be32 first_crc;
- + __u8 second_ttl;
- + __u8 second_ttvn;
- + __u8 second_dest[ETH_ALEN];
- + __u8 second_source[ETH_ALEN];
- + __u8 second_orig_dest[ETH_ALEN];
- + __be32 second_crc;
- + __be16 coded_len;
- +};
- +
- +#pragma pack()
- +
- +/**
- + * struct batadv_unicast_tvlv_packet - generic unicast packet with tvlv payload
- + * @packet_type: batman-adv packet type, part of the general header
- + * @version: batman-adv protocol version, part of the genereal header
- + * @ttl: time to live for this packet, part of the genereal header
- + * @reserved: reserved field (for packet alignment)
- + * @src: address of the source
- + * @dst: address of the destination
- + * @tvlv_len: length of tvlv data following the unicast tvlv header
- + * @align: 2 bytes to align the header to a 4 byte boundary
- + */
- +struct batadv_unicast_tvlv_packet {
- + __u8 packet_type;
- + __u8 version; /* batman version field */
- + __u8 ttl;
- + __u8 reserved;
- + __u8 dst[ETH_ALEN];
- + __u8 src[ETH_ALEN];
- + __be16 tvlv_len;
- + __u16 align;
- +};
- +
- +/**
- + * struct batadv_tvlv_hdr - base tvlv header struct
- + * @type: tvlv container type (see batadv_tvlv_type)
- + * @version: tvlv container version
- + * @len: tvlv container length
- + */
- +struct batadv_tvlv_hdr {
- + __u8 type;
- + __u8 version;
- + __be16 len;
- +};
- +
- +/**
- + * struct batadv_tvlv_gateway_data - gateway data propagated through gw tvlv
- + * container
- + * @bandwidth_down: advertised uplink download bandwidth
- + * @bandwidth_up: advertised uplink upload bandwidth
- + */
- +struct batadv_tvlv_gateway_data {
- + __be32 bandwidth_down;
- + __be32 bandwidth_up;
- +};
- +
- +/**
- + * struct batadv_tvlv_tt_data - tt data propagated through the tt tvlv container
- + * @flags: translation table flags (see batadv_tt_data_flags)
- + * @ttvn: translation table version number
- + * @num_vlan: number of announced VLANs. In the TVLV this struct is followed by
- + * one batadv_tvlv_tt_vlan_data object per announced vlan
- + */
- +struct batadv_tvlv_tt_data {
- + __u8 flags;
- + __u8 ttvn;
- + __be16 num_vlan;
- +};
- +
- +/**
- + * struct batadv_tvlv_tt_vlan_data - vlan specific tt data propagated through
- + * the tt tvlv container
- + * @crc: crc32 checksum of the entries belonging to this vlan
- + * @vid: vlan identifier
- + * @reserved: unused, useful for alignment purposes
- + */
- +struct batadv_tvlv_tt_vlan_data {
- + __be32 crc;
- + __be16 vid;
- + __u16 reserved;
- +};
- +
- +/**
- + * struct batadv_tvlv_tt_change - translation table diff data
- + * @flags: status indicators concerning the non-mesh client (see
- + * batadv_tt_client_flags)
- + * @reserved: reserved field - useful for alignment purposes only
- + * @addr: mac address of non-mesh client that triggered this tt change
- + * @vid: VLAN identifier
- + */
- +struct batadv_tvlv_tt_change {
- + __u8 flags;
- + __u8 reserved[3];
- + __u8 addr[ETH_ALEN];
- + __be16 vid;
- +};
- +
- +/**
- + * struct batadv_tvlv_roam_adv - roaming advertisement
- + * @client: mac address of roaming client
- + * @vid: VLAN identifier
- + */
- +struct batadv_tvlv_roam_adv {
- + __u8 client[ETH_ALEN];
- + __be16 vid;
- +};
- +
- +/**
- + * struct batadv_tvlv_mcast_data - payload of a multicast tvlv
- + * @flags: multicast flags announced by the orig node
- + * @reserved: reserved field
- + */
- +struct batadv_tvlv_mcast_data {
- + __u8 flags;
- + __u8 reserved[3];
- +};
- +
- +#endif /* _UAPI_LINUX_BATADV_PACKET_H_ */
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