staging: batman-adv meshing protocol

B.A.T.M.A.N. (better approach to mobile ad-hoc networking) is
a routing protocol for multi-hop ad-hoc mesh networks. The
networks may be wired or wireless. See
http://www.open-mesh.org/ for more information and user space
tools.

This is the first submission for inclusion in staging.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 96 insertions, 0 deletions

diff --git a/drivers/staging/batman-adv/packet.h b/drivers/staging/batman-adv/packet.h
new file mode 100644
index 00000000000..5627ca32601
--- /dev/null
+++ b/drivers/staging/batman-adv/packet.h
@@ -0,0 +1,96 @@
+/*
+ * Copyright (C) 2007-2009 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
+ *
+ */
+
+#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
+
+/* this file is included by batctl which needs these defines */
+#define COMPAT_VERSION 8
+#define DIRECTLINK 0x40
+#define VIS_SERVER 0x20
+
+/* 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
+
+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;
+	uint16_t seqno;
+	uint8_t  orig[6];
+	uint8_t  prev_sender[6];
+	uint8_t  ttl;
+	uint8_t  num_hna;
+} __attribute__((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;
+} __attribute__((packed));
+
+struct unicast_packet {
+	uint8_t  packet_type;
+	uint8_t  version;  /* batman version field */
+	uint8_t  dest[6];
+	uint8_t  ttl;
+} __attribute__((packed));
+
+struct bcast_packet {
+	uint8_t  packet_type;
+	uint8_t  version;  /* batman version field */
+	uint8_t  orig[6];
+	uint16_t seqno;
+} __attribute__((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  seqno;		 /* sequence number */
+	uint8_t  entries;	 /* number of entries behind this struct */
+	uint8_t  ttl;		 /* TTL */
+	uint8_t  vis_orig[6];	 /* originator that informs about its
+				  * neighbours */
+	uint8_t  target_orig[6]; /* who should receive this packet */
+	uint8_t  sender_orig[6]; /* who sent or rebroadcasted this packet */
+} __attribute__((packed));