net: Add 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.
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/batman-adv/packet.h b/net/batman-adv/packet.h
new file mode 100644
index 0000000..b49fdf7
--- /dev/null
+++ b/net/batman-adv/packet.h
@@ -0,0 +1,136 @@
+/*
+ * 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;
+} __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));
+
+#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];
+} __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 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;
+} __attribute__((packed));
+
+struct bcast_packet {
+ uint8_t packet_type;
+ uint8_t version; /* batman version field */
+ uint8_t orig[6];
+ uint8_t ttl;
+ uint32_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 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 */
+} __attribute__((packed));
+
+#endif /* _NET_BATMAN_ADV_PACKET_H_ */