[deliverable/linux.git] / net / batman-adv / packet.h

/*
 * Copyright (C) 2007-2010 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, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA
 *
 */

#ifndef _NET_BATMAN_ADV_PACKET_H_
#define _NET_BATMAN_ADV_PACKET_H_

#define ETH_P_BATMAN  0x4305	/* unofficial/not registered Ethertype */

#define BAT_PACKET       0x01
#define BAT_ICMP         0x02
#define BAT_UNICAST      0x03
#define BAT_BCAST        0x04
#define BAT_VIS          0x05
#define BAT_UNICAST_FRAG 0x06

/* this file is included by batctl which needs these defines */
#define COMPAT_VERSION 12
#define DIRECTLINK 0x40
#define VIS_SERVER 0x20
#define PRIMARIES_FIRST_HOP 0x10

/* ICMP message types */
#define ECHO_REPLY 0
#define DESTINATION_UNREACHABLE 3
#define ECHO_REQUEST 8
#define TTL_EXCEEDED 11
#define PARAMETER_PROBLEM 12

/* vis defines */
#define VIS_TYPE_SERVER_SYNC		0
#define VIS_TYPE_CLIENT_UPDATE		1

/* fragmentation defines */
#define UNI_FRAG_HEAD 0x01

struct batman_packet {
	uint8_t  packet_type;
	uint8_t  version;  /* batman version field */
	uint8_t  flags;    /* 0x40: DIRECTLINK flag, 0x20 VIS_SERVER flag... */
	uint8_t  tq;
	uint32_t seqno;
	uint8_t  orig[6];
	uint8_t  prev_sender[6];
	uint8_t  ttl;
	uint8_t  num_hna;
	uint8_t  gw_flags;  /* flags related to gateway class */
	uint8_t  align;
} __packed;

#define BAT_PACKET_LEN sizeof(struct batman_packet)

struct icmp_packet {
	uint8_t  packet_type;
	uint8_t  version;  /* batman version field */
	uint8_t  msg_type; /* see ICMP message types above */
	uint8_t  ttl;
	uint8_t  dst[6];
	uint8_t  orig[6];
	uint16_t seqno;
	uint8_t  uid;
} __packed;

#define BAT_RR_LEN 16

/* icmp_packet_rr must start with all fields from imcp_packet
 * as this is assumed by code that handles ICMP packets */
struct icmp_packet_rr {
	uint8_t  packet_type;
	uint8_t  version;  /* batman version field */
	uint8_t  msg_type; /* see ICMP message types above */
	uint8_t  ttl;
	uint8_t  dst[6];
	uint8_t  orig[6];
	uint16_t seqno;
	uint8_t  uid;
	uint8_t  rr_cur;
	uint8_t  rr[BAT_RR_LEN][ETH_ALEN];
} __packed;

struct unicast_packet {
	uint8_t  packet_type;
	uint8_t  version;  /* batman version field */
	uint8_t  dest[6];
	uint8_t  ttl;
} __packed;

struct unicast_frag_packet {
	uint8_t  packet_type;
	uint8_t  version;  /* batman version field */
	uint8_t  dest[6];
	uint8_t  ttl;
	uint8_t  flags;
	uint8_t  orig[6];
	uint16_t seqno;
} __packed;

struct bcast_packet {
	uint8_t  packet_type;
	uint8_t  version;  /* batman version field */
	uint8_t  orig[6];
	uint8_t  ttl;
	uint32_t seqno;
} __packed;

struct vis_packet {
	uint8_t  packet_type;
	uint8_t  version;        /* batman version field */
	uint8_t  vis_type;	 /* which type of vis-participant sent this? */
	uint8_t  entries;	 /* number of entries behind this struct */
	uint32_t seqno;		 /* sequence number */
	uint8_t  ttl;		 /* TTL */
	uint8_t  vis_orig[6];	 /* originator that informs about its
				  * neighbors */
	uint8_t  target_orig[6]; /* who should receive this packet */
	uint8_t  sender_orig[6]; /* who sent or rebroadcasted this packet */
} __packed;

#endif /* _NET_BATMAN_ADV_PACKET_H_ */
Commit	Line	Data
c6c8fea2 SE	1	/*
	2	* Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
	3	*
	4	* Marek Lindner, Simon Wunderlich
	5	*
	6	* This program is free software; you can redistribute it and/or
	7	* modify it under the terms of version 2 of the GNU General Public
	8	* License as published by the Free Software Foundation.
	9	*
	10	* This program is distributed in the hope that it will be useful, but
	11	* WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	13	* General Public License for more details.
	14	*
	15	* You should have received a copy of the GNU General Public License
	16	* along with this program; if not, write to the Free Software
	17	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
	18	* 02110-1301, USA
	19	*
	20	*/
	21
	22	#ifndef _NET_BATMAN_ADV_PACKET_H_
	23	#define _NET_BATMAN_ADV_PACKET_H_
	24
	25	#define ETH_P_BATMAN 0x4305 /* unofficial/not registered Ethertype */
	26
	27	#define BAT_PACKET 0x01
	28	#define BAT_ICMP 0x02
	29	#define BAT_UNICAST 0x03
	30	#define BAT_BCAST 0x04
	31	#define BAT_VIS 0x05
	32	#define BAT_UNICAST_FRAG 0x06
	33
	34	/* this file is included by batctl which needs these defines */
	35	#define COMPAT_VERSION 12
	36	#define DIRECTLINK 0x40
	37	#define VIS_SERVER 0x20
	38	#define PRIMARIES_FIRST_HOP 0x10
	39
	40	/* ICMP message types */
	41	#define ECHO_REPLY 0
	42	#define DESTINATION_UNREACHABLE 3
	43	#define ECHO_REQUEST 8
	44	#define TTL_EXCEEDED 11
	45	#define PARAMETER_PROBLEM 12
	46
	47	/* vis defines */
	48	#define VIS_TYPE_SERVER_SYNC 0
	49	#define VIS_TYPE_CLIENT_UPDATE 1
	50
	51	/* fragmentation defines */
	52	#define UNI_FRAG_HEAD 0x01
	53
	54	struct batman_packet {
	55	uint8_t packet_type;
	56	uint8_t version; /* batman version field */
	57	uint8_t flags; /* 0x40: DIRECTLINK flag, 0x20 VIS_SERVER flag... */
	58	uint8_t tq;
	59	uint32_t seqno;
	60	uint8_t orig[6];
	61	uint8_t prev_sender[6];
	62	uint8_t ttl;
	63	uint8_t num_hna;
	64	uint8_t gw_flags; /* flags related to gateway class */
65	uint8_t align;
aa0adb1a	66	} __packed;
c6c8fea2 SE	67
	68	#define BAT_PACKET_LEN sizeof(struct batman_packet)
	69
	70	struct icmp_packet {
	71	uint8_t packet_type;
	72	uint8_t version; /* batman version field */
	73	uint8_t msg_type; /* see ICMP message types above */
	74	uint8_t ttl;
	75	uint8_t dst[6];
	76	uint8_t orig[6];
	77	uint16_t seqno;
	78	uint8_t uid;
aa0adb1a	79	} __packed;
c6c8fea2 SE	80
	81	#define BAT_RR_LEN 16
	82
	83	/* icmp_packet_rr must start with all fields from imcp_packet
	84	* as this is assumed by code that handles ICMP packets */
	85	struct icmp_packet_rr {
	86	uint8_t packet_type;
	87	uint8_t version; /* batman version field */
	88	uint8_t msg_type; /* see ICMP message types above */
	89	uint8_t ttl;
	90	uint8_t dst[6];
	91	uint8_t orig[6];
	92	uint16_t seqno;
	93	uint8_t uid;
	94	uint8_t rr_cur;
	95	uint8_t rr[BAT_RR_LEN][ETH_ALEN];
aa0adb1a	96	} __packed;
c6c8fea2 SE	97
	98	struct unicast_packet {
	99	uint8_t packet_type;
	100	uint8_t version; /* batman version field */
	101	uint8_t dest[6];
	102	uint8_t ttl;
aa0adb1a	103	} __packed;
c6c8fea2 SE	104
	105	struct unicast_frag_packet {
	106	uint8_t packet_type;
	107	uint8_t version; /* batman version field */
	108	uint8_t dest[6];
	109	uint8_t ttl;
	110	uint8_t flags;
	111	uint8_t orig[6];
	112	uint16_t seqno;
aa0adb1a	113	} __packed;
c6c8fea2 SE	114
	115	struct bcast_packet {
	116	uint8_t packet_type;
	117	uint8_t version; /* batman version field */
	118	uint8_t orig[6];
	119	uint8_t ttl;
	120	uint32_t seqno;
aa0adb1a	121	} __packed;
c6c8fea2 SE	122
	123	struct vis_packet {
	124	uint8_t packet_type;
	125	uint8_t version; /* batman version field */
	126	uint8_t vis_type; /* which type of vis-participant sent this? */
	127	uint8_t entries; /* number of entries behind this struct */
	128	uint32_t seqno; /* sequence number */
	129	uint8_t ttl; /* TTL */
	130	uint8_t vis_orig[6]; /* originator that informs about its
	131	* neighbors */
	132	uint8_t target_orig[6]; /* who should receive this packet */
	133	uint8_t sender_orig[6]; /* who sent or rebroadcasted this packet */
aa0adb1a	134	} __packed;
c6c8fea2 SE	135
c6c8fea2 SE	136	#endif /* _NET_BATMAN_ADV_PACKET_H_ */