/* * OLSR ad-hoc routing table management protocol * Copyright (C) 2003 Andreas T鴑nesen (andreto@ifi.uio.no) * * This file is part of the UniK OLSR daemon. * * The UniK OLSR daemon is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * The UniK OLSR daemon 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 the UniK OLSR daemon; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA * *//* *Values and packet formats as proposed in RFC3626 and misc. values and *data structures used by the UniK olsr daemon. */#ifndef _PROTOCOLS_OLSR_H#define	_PROTOCOLS_OLSR_H/* Port for OLSR to use */#define OLSRPORT       698/* Default IPv6 multicast address */#define OLSR_IPV6_MULTICAST_ADDR "ff05::15"/* types */#include <sys/types.h>#ifdef WIN32typedef unsigned char   olsr_u8_t;typedef unsigned short  olsr_u16_t;typedef unsigned int    olsr_u32_t;typedef char            olsr_8_t;typedef short           olsr_16_t;typedef int             olsr_32_t;#elsetypedef u_int8_t        olsr_u8_t;typedef u_int16_t       olsr_u16_t;typedef u_int32_t       olsr_u32_t;typedef int8_t          olsr_8_t;typedef int16_t         olsr_16_t;typedef int32_t         olsr_32_t;#endif/* IPv6 address format in6_addr */#include <netinet/in.h>union olsr_ip_addr{  olsr_u32_t v4;  struct in6_addr v6;};/* *Emission Intervals */#define HELLO_INTERVAL        2#define HELLO_INTERVAL_NW     HELLO_INTERVAL * 2#define REFRESH_INTERVAL      2#define TC_INTERVAL           5#define MID_INTERVAL          TC_INTERVAL#define HNA_INTERVAL          TC_INTERVAL/* *Holding Time */#define NEIGHB_HOLD_TIME      3 * REFRESH_INTERVAL/*extra: time to delete for non-wireless interfaces */#define NEIGHB_HOLD_TIME_NW   NEIGHB_HOLD_TIME * 2#define TOP_HOLD_TIME         3 * TC_INTERVAL#define DUP_HOLD_TIME         30#define MID_HOLD_TIME         3 * MID_INTERVAL#define HNA_HOLD_TIME         3 * HNA_INTERVAL/* * Scaling factor */#define VTIME_SCALE_FACTOR    0.0625/* *Message Types */#define HELLO_MESSAGE         1#define TC_MESSAGE            2#define MID_MESSAGE           3#define HNA_MESSAGE           4#define MAX_MESSAGE           4/* *Link Types */#define UNSPEC_LINK           0#define ASYM_LINK             1#define SYM_LINK              2#define LOST_LINK             3#define MAX_LINK              3/* *Neighbor Types */#define NOT_NEIGH             0#define SYM_NEIGH             1#define MPR_NEIGH             2#define MAX_NEIGH             2/* *Neighbor status */#define NOT_SYM               0#define SYM                   1/* *Link Hysteresis */#define HYST_THRESHOLD_HIGH   0.8#define HYST_THRESHOLD_LOW    0.3#define HYST_SCALING          0.5/* *Willingness */#define WILL_NEVER            0#define WILL_LOW              1#define WILL_DEFAULT          3#define WILL_HIGH             6#define WILL_ALWAYS           7/* *Misc. Constants */#define TC_REDUNDANCY         0#define MPR_COVERAGE          1#define MAXJITTER             HELLO_INTERVAL / 4#define MAX_TTL               0xff/* *Sequence numbering *//* Seqnos are 16 bit values */#define MAXVALUE 0xFFFF/* Macro for checking seqnos "wraparound" */#define SEQNO_GREATER_THAN(s1, s2)                \        (((s1 > s2) && (s1 - s2 <= (MAXVALUE/2))) \     || ((s2 > s1) && (s2 - s1 > (MAXVALUE/2))))/* * Macros for creating and extracting the neighbor  * and link type information from 8bit link_code * data as passed in HELLO messages */#define CREATE_LINK_CODE(status, link) (link | (status<<2))#define EXTRACT_STATUS(link_code) ((link_code & 0xC)>>2)#define EXTRACT_LINK(link_code) (link_code & 0x3)/*********************************************** *           OLSR packet definitions           * ***********************************************//* *The HELLO message *//* *Hello info */struct hellinfo {  olsr_u8_t   link_code;  olsr_u8_t   reserved;  olsr_u16_t  size;  olsr_u32_t  neigh_addr[1]; /* neighbor IP address(es) */};struct hellomsg {  olsr_u16_t      reserved;  olsr_u8_t       htime;  olsr_u8_t       willingness;  struct hellinfo hell_info[1];};/* *IPv6 */struct hellinfo6{  olsr_u8_t       link_code;  olsr_u8_t       reserved;  olsr_u16_t      size;  struct in6_addr neigh_addr[1]; /* neighbor IP address(es) */};struct hellomsg6{  olsr_u16_t         reserved;  olsr_u8_t          htime;  olsr_u8_t          willingness;  struct hellinfo6 hell_info[1];};/* * Topology Control packet */struct neigh_info{  olsr_u32_t       addr;};struct olsr_tcmsg {  olsr_u16_t        ansn;  olsr_u16_t        reserved;  struct neigh_info neigh[1];};/* *IPv6 */struct neigh_info6{  struct in6_addr      addr;};struct olsr_tcmsg6{  olsr_u16_t           ansn;  olsr_u16_t           reserved;  struct neigh_info6 neigh[1];};/* *Multiple Interface Declaration message *//*  * Defined as s struct for further expansion  * For example: do we want to tell what type of interface * is associated whit each address? */struct midaddr{  olsr_u32_t addr;};struct midmsg {  struct midaddr mid_addr[1];};/* *IPv6 */struct midaddr6{  struct in6_addr addr;};struct midmsg6{  struct midaddr6 mid_addr[1];};/* * Host and Network Association message */struct hnapair{  olsr_u32_t   addr;  olsr_u32_t   netmask;};struct hnamsg{  struct hnapair hna_net[1];};/* *IPv6 */struct hnapair6{  struct in6_addr   addr;  struct in6_addr   netmask;};struct hnamsg6{  struct hnapair6 hna_net[1];};/* * OLSR message (several can exist in one OLSR packet) */struct olsrmsg{  olsr_u8_t     olsr_msgtype;  olsr_u8_t     olsr_vtime;  olsr_u16_t    olsr_msgsize;  olsr_u32_t    originator;  olsr_u8_t     ttl;  olsr_u8_t     hopcnt;  olsr_u16_t    seqno;  union   {    struct hellomsg hello;    struct olsr_tcmsg    tc;    struct hnamsg   hna;    struct midmsg   mid;  } message;};/* *IPv6 */struct olsrmsg6{  olsr_u8_t        olsr_msgtype;  olsr_u8_t        olsr_vtime;  olsr_u16_t       olsr_msgsize;  struct in6_addr  originator;  olsr_u8_t        ttl;  olsr_u8_t        hopcnt;  olsr_u16_t       seqno;  union   {    struct hellomsg6 hello;    struct olsr_tcmsg6    tc;    struct hnamsg6   hna;    struct midmsg6   mid;  } message;};/* * Generic OLSR packet */struct olsr {  olsr_u16_t	  olsr_packlen;		/* packet length */  olsr_u16_t	  olsr_seqno;  struct olsrmsg  olsr_msg[1];          /* variable messages */};struct olsr6{  olsr_u16_t	    olsr_packlen;        /* packet length */  olsr_u16_t	    olsr_seqno;  struct olsrmsg6   olsr_msg[1];         /* variable messages */};/* IPv4 <-> IPv6 compability */union olsr_message{  struct olsrmsg v4;  struct olsrmsg6 v6;};union olsr_packet{  struct olsr v4;  struct olsr6 v6;};#endif