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Add support for B.A.T.M.A.N. Advanced #980

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Add support for B.A.T.M.A.N. Advanced #980

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62133cb
Add support for B.A.T.M.A.N. Advanced
T-X Nov 22, 2020
da42b5b
batman-adv: Add offset support to batman-adv mcast packet
T-X Jun 29, 2024
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2 changes: 2 additions & 0 deletions Makefile.in
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Original file line number Diff line number Diff line change
Expand Up @@ -121,6 +121,8 @@ PUBHDR = \
HDR = $(PUBHDR) \
arcnet.h \
atmuni31.h \
batadv_legacy_packet.h \
batadv_packet.h \
diag-control.h \
ethertype.h \
extract.h \
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77 changes: 77 additions & 0 deletions batadv_legacy_packet.h
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@@ -0,0 +1,77 @@
/* SPDX-License-Identifier: BSD-3 */
/* Copyright (C) 2020 Linus Lüssing */

#ifndef _BATADV_LEGACY_PACKET_H_
#define _BATADV_LEGACY_PACKET_H_

enum batadv_legacy_packettype {
BATADV_LEGACY_IV_OGM = 0x01,
BATADV_LEGACY_ICMP = 0x02,
BATADV_LEGACY_UNICAST = 0x03,
BATADV_LEGACY_BCAST = 0x04,
BATADV_LEGACY_VIS = 0x05,
BATADV_LEGACY_UNICAST_FRAG = 0x06,
BATADV_LEGACY_TT_QUERY = 0x07,
BATADV_LEGACY_ROAM_ADV = 0x08,
BATADV_LEGACY_UNICAST_4ADDR = 0x09,
BATADV_LEGACY_CODED = 0x0a,
};

#define ETH_ALEN 6

struct batadv_legacy_unicast_packet {
uint8_t packet_type;
uint8_t version;
uint8_t ttl;
uint8_t ttvn;
uint8_t dest[ETH_ALEN];
};

struct batadv_legacy_unicast_4addr_packet {
uint8_t packet_type;
uint8_t version;
uint8_t ttl;
uint8_t src[ETH_ALEN];
uint8_t subtype;
uint8_t reserved;
};

struct batadv_legacy_unicast_frag_packet {
uint8_t packet_type;
uint8_t version;
uint8_t ttl;
uint8_t ttvn;
uint8_t dest[ETH_ALEN];
uint8_t flags;
uint8_t align;
uint8_t orig[ETH_ALEN];
uint8_t seqno[2]; /* 2-byte integral value */
};

struct batadv_legacy_bcast_packet {
uint8_t packet_type;
uint8_t version;
uint8_t ttl;
uint8_t reserved;
uint8_t seqno[4]; /* 4-byte integral value */
uint8_t orig[ETH_ALEN];
};

struct batadv_legacy_coded_packet {
uint8_t packet_type;
uint8_t version;
uint8_t ttl;
uint8_t first_ttvn;
uint8_t first_source[ETH_ALEN];
uint8_t first_orig_dest[ETH_ALEN];
uint8_t first_crc[4]; /* 4-byte integral value */
uint8_t second_ttl;
uint8_t second_ttvn;
uint8_t second_dest[ETH_ALEN];
uint8_t second_source[ETH_ALEN];
uint8_t second_orig_dest[ETH_ALEN];
uint8_t second_crc[4]; /* 4-byte integral value */
uint8_t coded_len[2]; /* 2-byte integral value */
};

#endif /* _BATADV_LEGACY_PACKET_H_ */
87 changes: 87 additions & 0 deletions batadv_packet.h
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/* SPDX-License-Identifier: BSD-3 */
/* Copyright (C) 2024 Linus Lüssing */

#ifndef _BATADV_PACKET_H_
#define _BATADV_PACKET_H_

/* For the definitive and most recent packet format definition,
* see the batadv_packet.h in the Linux kernel.
*/

enum batadv_packettype {
BATADV_IV_OGM = 0x00,
BATADV_BCAST = 0x01,
BATADV_CODED = 0x02,
BATADV_ELP = 0x03,
BATADV_OGM2 = 0x04,
BATADV_MCAST = 0x05,
BATADV_UNICAST = 0x40,
BATADV_UNICAST_FRAG = 0x41,
BATADV_UNICAST_4ADDR = 0x42,
BATADV_ICMP = 0x43,
BATADV_UNICAST_TVLV = 0x44,
};

#define ETH_ALEN 6

struct batadv_unicast_packet {
uint8_t packet_type;
uint8_t version;
uint8_t ttl;
uint8_t ttvn;
uint8_t dest[ETH_ALEN];
};

struct batadv_unicast_4addr_packet {
struct batadv_unicast_packet u;
uint8_t src[ETH_ALEN];
uint8_t subtype;
uint8_t reserved;
};

struct batadv_frag_packet {
uint8_t packet_type;
uint8_t version;
uint8_t ttl;
uint8_t num_pri; /* number and priority */
uint8_t dest[ETH_ALEN];
uint8_t orig[ETH_ALEN];
uint8_t seqno[2]; /* 2-byte integral value */
uint8_t total_size[2]; /* 2-byte integral value */
};

struct batadv_bcast_packet {
uint8_t packet_type;
uint8_t version;
uint8_t ttl;
uint8_t reserved;
uint8_t seqno[4]; /* 4-byte integral value */
uint8_t orig[ETH_ALEN];
};

struct batadv_mcast_packet {
uint8_t packet_type;
uint8_t version;
uint8_t ttl;
uint8_t reserved;
uint8_t tvlv_len[2]; /* 2-byte integral value */
};

struct batadv_coded_packet {
uint8_t packet_type;
uint8_t version;
uint8_t ttl;
uint8_t first_ttvn;
uint8_t first_source[ETH_ALEN];
uint8_t first_orig_dest[ETH_ALEN];
uint8_t first_crc[4]; /* 4-byte integral value */
uint8_t second_ttl;
uint8_t second_ttvn;
uint8_t second_dest[ETH_ALEN];
uint8_t second_source[ETH_ALEN];
uint8_t second_orig_dest[ETH_ALEN];
uint8_t second_crc[4]; /* 4-byte integral value */
uint8_t coded_len[2]; /* 2-byte integral value */
};

#endif /* _BATADV_PACKET_H_ */
3 changes: 3 additions & 0 deletions ethertype.h
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Original file line number Diff line number Diff line change
Expand Up @@ -49,6 +49,9 @@
#ifndef ETHERTYPE_TRAIL
#define ETHERTYPE_TRAIL 0x1000
#endif
#ifndef ETHERTYPE_BATMAN
#define ETHERTYPE_BATMAN 0x4305 /* B.A.T.M.A.N. Advanced */
#endif
#ifndef ETHERTYPE_MOPDL
#define ETHERTYPE_MOPDL 0x6001
#endif
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