Initial file dump from open source releaseHEADmaster

1 files changed, 314 insertions, 0 deletions

diff --git a/net/batman-adv/packet.h b/net/batman-adv/packet.h
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+++ b/net/batman-adv/packet.h
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+/* Copyright (C) 2007-2013 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_
+
+enum batadv_packettype {
+	BATADV_IV_OGM		= 0x01,
+	BATADV_ICMP		= 0x02,
+	BATADV_UNICAST		= 0x03,
+	BATADV_BCAST		= 0x04,
+	BATADV_VIS		= 0x05,
+	BATADV_UNICAST_FRAG	= 0x06,
+	BATADV_TT_QUERY		= 0x07,
+	BATADV_ROAM_ADV		= 0x08,
+	BATADV_UNICAST_4ADDR	= 0x09,
+	BATADV_CODED		= 0x0a,
+};
+
+/**
+ * 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 14
+
+enum batadv_iv_flags {
+	BATADV_NOT_BEST_NEXT_HOP   = BIT(3),
+	BATADV_PRIMARIES_FIRST_HOP = BIT(4),
+	BATADV_VIS_SERVER	   = BIT(5),
+	BATADV_DIRECTLINK	   = BIT(6),
+};
+
+/* 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,
+};
+
+/* vis defines */
+enum batadv_vis_packettype {
+	BATADV_VIS_TYPE_SERVER_SYNC   = 0,
+	BATADV_VIS_TYPE_CLIENT_UPDATE = 1,
+};
+
+/* fragmentation defines */
+enum batadv_unicast_frag_flags {
+	BATADV_UNI_FRAG_HEAD	  = BIT(0),
+	BATADV_UNI_FRAG_LARGETAIL = BIT(1),
+};
+
+/* TT_QUERY subtypes */
+#define BATADV_TT_QUERY_TYPE_MASK 0x3
+
+enum batadv_tt_query_packettype {
+	BATADV_TT_REQUEST  = 0,
+	BATADV_TT_RESPONSE = 1,
+};
+
+/* TT_QUERY flags */
+enum batadv_tt_query_flags {
+	BATADV_TT_FULL_TABLE = BIT(2),
+};
+
+/* BATADV_TT_CLIENT flags.
+ * Flags from BIT(0) to BIT(7) are sent on the wire, while flags from BIT(8) to
+ * BIT(15) are used for local computation only
+ */
+enum batadv_tt_client_flags {
+	BATADV_TT_CLIENT_DEL     = BIT(0),
+	BATADV_TT_CLIENT_ROAM    = BIT(1),
+	BATADV_TT_CLIENT_WIFI    = BIT(2),
+	BATADV_TT_CLIENT_TEMP	 = BIT(3),
+	BATADV_TT_CLIENT_NOPURGE = BIT(8),
+	BATADV_TT_CLIENT_NEW     = BIT(9),
+	BATADV_TT_CLIENT_PENDING = BIT(10),
+};
+
+/* 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,
+};
+
+/* the destination hardware field in the ARP frame is used to
+ * transport the claim type and the group id
+ */
+struct batadv_bla_claim_dst {
+	uint8_t magic[3];	/* FF:43:05 */
+	uint8_t type;		/* bla_claimframe */
+	__be16 group;		/* group id */
+};
+
+struct batadv_header {
+	uint8_t  packet_type;
+	uint8_t  version;  /* batman version field */
+	uint8_t  ttl;
+	/* the parent struct has to add a byte after the header to make
+	 * everything 4 bytes aligned again
+	 */
+};
+
+struct batadv_ogm_packet {
+	struct batadv_header header;
+	uint8_t  flags;    /* 0x40: DIRECTLINK flag, 0x20 VIS_SERVER flag... */
+	__be32   seqno;
+	uint8_t  orig[ETH_ALEN];
+	uint8_t  prev_sender[ETH_ALEN];
+	uint8_t  gw_flags;  /* flags related to gateway class */
+	uint8_t  tq;
+	uint8_t  tt_num_changes;
+	uint8_t  ttvn; /* translation table version number */
+	__be16   tt_crc;
+} __packed;
+
+#define BATADV_OGM_HLEN sizeof(struct batadv_ogm_packet)
+
+struct batadv_icmp_packet {
+	struct batadv_header header;
+	uint8_t  msg_type; /* see ICMP message types above */
+	uint8_t  dst[ETH_ALEN];
+	uint8_t  orig[ETH_ALEN];
+	__be16   seqno;
+	uint8_t  uid;
+	uint8_t  reserved;
+};
+
+#define BATADV_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 batadv_icmp_packet_rr {
+	struct batadv_header header;
+	uint8_t  msg_type; /* see ICMP message types above */
+	uint8_t  dst[ETH_ALEN];
+	uint8_t  orig[ETH_ALEN];
+	__be16   seqno;
+	uint8_t  uid;
+	uint8_t  rr_cur;
+	uint8_t  rr[BATADV_RR_LEN][ETH_ALEN];
+};
+
+/* 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 {
+	struct batadv_header header;
+	uint8_t  ttvn; /* destination translation table version number */
+	uint8_t  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
+ */
+struct batadv_unicast_4addr_packet {
+	struct batadv_unicast_packet u;
+	uint8_t src[ETH_ALEN];
+	uint8_t subtype;
+	uint8_t reserved;
+	/* "4 bytes boundary + 2 bytes" long to make the payload after the
+	 * following ethernet header again 4 bytes boundary aligned
+	 */
+};
+
+struct batadv_unicast_frag_packet {
+	struct batadv_header header;
+	uint8_t  ttvn; /* destination translation table version number */
+	uint8_t  dest[ETH_ALEN];
+	uint8_t  flags;
+	uint8_t  align;
+	uint8_t  orig[ETH_ALEN];
+	__be16   seqno;
+} __packed;
+
+struct batadv_bcast_packet {
+	struct batadv_header header;
+	uint8_t  reserved;
+	__be32   seqno;
+	uint8_t  orig[ETH_ALEN];
+	/* "4 bytes boundary + 2 bytes" long to make the payload after the
+	 * following ethernet header again 4 bytes boundary aligned
+	 */
+};
+
+#pragma pack()
+
+struct batadv_vis_packet {
+	struct batadv_header header;
+	uint8_t  vis_type;	 /* which type of vis-participant sent this? */
+	__be32   seqno;		 /* sequence number */
+	uint8_t  entries;	 /* number of entries behind this struct */
+	uint8_t  reserved;
+	uint8_t  vis_orig[ETH_ALEN];	/* originator reporting its neighbors */
+	uint8_t  target_orig[ETH_ALEN]; /* who should receive this packet */
+	uint8_t  sender_orig[ETH_ALEN]; /* who sent or forwarded this packet */
+};
+
+struct batadv_tt_query_packet {
+	struct batadv_header header;
+	/* the flag field is a combination of:
+	 * - TT_REQUEST or TT_RESPONSE
+	 * - TT_FULL_TABLE
+	 */
+	uint8_t  flags;
+	uint8_t  dst[ETH_ALEN];
+	uint8_t  src[ETH_ALEN];
+	/* the ttvn field is:
+	 * if TT_REQUEST: ttvn that triggered the
+	 *		  request
+	 * if TT_RESPONSE: new ttvn for the src
+	 *		   orig_node
+	 */
+	uint8_t  ttvn;
+	/* tt_data field is:
+	 * if TT_REQUEST: crc associated with the
+	 *		  ttvn
+	 * if TT_RESPONSE: table_size
+	 */
+	__be16 tt_data;
+} __packed;
+
+struct batadv_roam_adv_packet {
+	struct batadv_header header;
+	uint8_t  reserved;
+	uint8_t  dst[ETH_ALEN];
+	uint8_t  src[ETH_ALEN];
+	uint8_t  client[ETH_ALEN];
+} __packed;
+
+struct batadv_tt_change {
+	uint8_t flags;
+	uint8_t addr[ETH_ALEN];
+} __packed;
+
+/**
+ * struct batadv_coded_packet - network coded packet
+ * @header: common batman packet header and ttl of first included packet
+ * @reserved: Align following fields to 2-byte boundaries
+ * @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 {
+	struct batadv_header header;
+	uint8_t  first_ttvn;
+	/* uint8_t  first_dest[ETH_ALEN]; - saved in mac header destination */
+	uint8_t  first_source[ETH_ALEN];
+	uint8_t  first_orig_dest[ETH_ALEN];
+	__be32   first_crc;
+	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];
+	__be32   second_crc;
+	__be16   coded_len;
+};
+
+#endif /* _NET_BATMAN_ADV_PACKET_H_ */