mirror of
https://github.com/torvalds/linux.git
synced 2024-09-27 02:13:14 +00:00
e8958dbf0d
CodingStyle "Chapter 12: Macros, Enums and RTL" recommends to use enums for several related constants. Internal states can be used without defining the actual value, but all values which are visible to the outside must be defined as before. Normal values are assigned as usual and flags are defined by shifts of a bit. Signed-off-by: Sven Eckelmann <sven@narfation.org>
148 lines
3.7 KiB
C
148 lines
3.7 KiB
C
/*
|
|
* Copyright (C) 2007-2011 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 */
|
|
|
|
enum bat_packettype {
|
|
BAT_PACKET = 0x01,
|
|
BAT_ICMP = 0x02,
|
|
BAT_UNICAST = 0x03,
|
|
BAT_BCAST = 0x04,
|
|
BAT_VIS = 0x05,
|
|
BAT_UNICAST_FRAG = 0x06
|
|
};
|
|
|
|
/* this file is included by batctl which needs these defines */
|
|
#define COMPAT_VERSION 12
|
|
|
|
enum batman_flags {
|
|
PRIMARIES_FIRST_HOP = 1 << 4,
|
|
VIS_SERVER = 1 << 5,
|
|
DIRECTLINK = 1 << 6
|
|
};
|
|
|
|
/* ICMP message types */
|
|
enum icmp_packettype {
|
|
ECHO_REPLY = 0,
|
|
DESTINATION_UNREACHABLE = 3,
|
|
ECHO_REQUEST = 8,
|
|
TTL_EXCEEDED = 11,
|
|
PARAMETER_PROBLEM = 12
|
|
};
|
|
|
|
/* vis defines */
|
|
enum vis_packettype {
|
|
VIS_TYPE_SERVER_SYNC = 0,
|
|
VIS_TYPE_CLIENT_UPDATE = 1
|
|
};
|
|
|
|
/* fragmentation defines */
|
|
enum unicast_frag_flags {
|
|
UNI_FRAG_HEAD = 1 << 0,
|
|
UNI_FRAG_LARGETAIL = 1 << 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;
|
|
uint32_t seqno;
|
|
uint8_t orig[6];
|
|
uint8_t prev_sender[6];
|
|
uint8_t ttl;
|
|
uint8_t num_tt;
|
|
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 announces 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_ */
|