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      1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
      2 /*
      3  * These are the public elements of the Linux kernel AX.25 code. A similar
      4  * file netrom.h exists for the NET/ROM protocol.
      5  */
      6 
      7 #ifndef	AX25_KERNEL_H
      8 #define	AX25_KERNEL_H
      9 
     10 #include <linux/socket.h>
     11 
     12 #define AX25_MTU	256
     13 #define AX25_MAX_DIGIS  8
     14 
     15 #define AX25_WINDOW	1
     16 #define AX25_T1		2
     17 #define AX25_N2		3
     18 #define AX25_T3		4
     19 #define AX25_T2		5
     20 #define	AX25_BACKOFF	6
     21 #define	AX25_EXTSEQ	7
     22 #define	AX25_PIDINCL	8
     23 #define AX25_IDLE	9
     24 #define AX25_PACLEN	10
     25 #define AX25_IAMDIGI	12
     26 
     27 #define AX25_KILL	99
     28 
     29 #define SIOCAX25GETUID		(SIOCPROTOPRIVATE+0)
     30 #define SIOCAX25ADDUID		(SIOCPROTOPRIVATE+1)
     31 #define SIOCAX25DELUID		(SIOCPROTOPRIVATE+2)
     32 #define SIOCAX25NOUID		(SIOCPROTOPRIVATE+3)
     33 #define SIOCAX25OPTRT		(SIOCPROTOPRIVATE+7)
     34 #define SIOCAX25CTLCON		(SIOCPROTOPRIVATE+8)
     35 #define SIOCAX25GETINFOOLD	(SIOCPROTOPRIVATE+9)
     36 #define SIOCAX25ADDFWD		(SIOCPROTOPRIVATE+10)
     37 #define SIOCAX25DELFWD		(SIOCPROTOPRIVATE+11)
     38 #define SIOCAX25DEVCTL          (SIOCPROTOPRIVATE+12)
     39 #define SIOCAX25GETINFO         (SIOCPROTOPRIVATE+13)
     40 
     41 #define AX25_SET_RT_IPMODE	2
     42 
     43 #define AX25_NOUID_DEFAULT	0
     44 #define AX25_NOUID_BLOCK	1
     45 
     46 typedef struct {
     47 	char		ax25_call[7];	/* 6 call + SSID (shifted ascii!) */
     48 } ax25_address;
     49 
     50 struct sockaddr_ax25 {
     51 	__kernel_sa_family_t sax25_family;
     52 	ax25_address	sax25_call;
     53 	int		sax25_ndigis;
     54 	/* Digipeater ax25_address sets follow */
     55 };
     56 
     57 #define sax25_uid	sax25_ndigis
     58 
     59 struct full_sockaddr_ax25 {
     60 	struct sockaddr_ax25 fsa_ax25;
     61 	ax25_address	fsa_digipeater[AX25_MAX_DIGIS];
     62 };
     63 
     64 struct ax25_routes_struct {
     65 	ax25_address	port_addr;
     66 	ax25_address	dest_addr;
     67 	unsigned char	digi_count;
     68 	ax25_address	digi_addr[AX25_MAX_DIGIS];
     69 };
     70 
     71 struct ax25_route_opt_struct {
     72 	ax25_address	port_addr;
     73 	ax25_address	dest_addr;
     74 	int		cmd;
     75 	int		arg;
     76 };
     77 
     78 struct ax25_ctl_struct {
     79         ax25_address            port_addr;
     80         ax25_address            source_addr;
     81         ax25_address            dest_addr;
     82         unsigned int            cmd;
     83         unsigned long           arg;
     84         unsigned char           digi_count;
     85         ax25_address            digi_addr[AX25_MAX_DIGIS];
     86 };
     87 
     88 /* this will go away. Please do not export to user land */
     89 struct ax25_info_struct_deprecated {
     90 	unsigned int	n2, n2count;
     91 	unsigned int	t1, t1timer;
     92 	unsigned int	t2, t2timer;
     93 	unsigned int	t3, t3timer;
     94 	unsigned int	idle, idletimer;
     95 	unsigned int	state;
     96 	unsigned int	rcv_q, snd_q;
     97 };
     98 
     99 struct ax25_info_struct {
    100 	unsigned int	n2, n2count;
    101 	unsigned int	t1, t1timer;
    102 	unsigned int	t2, t2timer;
    103 	unsigned int	t3, t3timer;
    104 	unsigned int	idle, idletimer;
    105 	unsigned int	state;
    106 	unsigned int	rcv_q, snd_q;
    107 	unsigned int	vs, vr, va, vs_max;
    108 	unsigned int	paclen;
    109 	unsigned int	window;
    110 };
    111 
    112 struct ax25_fwd_struct {
    113 	ax25_address	port_from;
    114 	ax25_address	port_to;
    115 };
    116 
    117 #endif
    118