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199 |
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/*
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* Declarations of AX.25 type objects.
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*
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* Alan Cox (GW4PTS) 10/11/93
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*/
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#ifndef _AX25_H
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#define _AX25_H
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#include <linux/ax25.h>
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#define AX25_SLOWHZ 10 /* Run timing at 1/10 second - gives us better resolution for 56kbit links */
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#define AX25_T1CLAMPLO (1 * AX25_SLOWHZ) /* If defined, clamp at 1 second **/
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#define AX25_T1CLAMPHI (30 * AX25_SLOWHZ) /* If defined, clamp at 30 seconds **/
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#define AX25_BPQ_HEADER_LEN 16
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#define AX25_KISS_HEADER_LEN 1
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#define AX25_HEADER_LEN 17
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#define AX25_ADDR_LEN 7
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#define AX25_DIGI_HEADER_LEN (AX25_MAX_DIGIS * AX25_ADDR_LEN)
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#define AX25_MAX_HEADER_LEN (AX25_HEADER_LEN + AX25_DIGI_HEADER_LEN)
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/* AX.25 Protocol IDs */
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#define AX25_P_ROSE 0x01
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#define AX25_P_IP 0xCC
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#define AX25_P_ARP 0xCD
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#define AX25_P_TEXT 0xF0
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#define AX25_P_NETROM 0xCF
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#define AX25_P_SEGMENT 0x08
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/* AX.25 Segment control values */
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#define AX25_SEG_REM 0x7F
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#define AX25_SEG_FIRST 0x80
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#define AX25_CBIT 0x80 /* Command/Response bit */
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#define AX25_EBIT 0x01 /* HDLC Address Extension bit */
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#define AX25_HBIT 0x80 /* Has been repeated bit */
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#define AX25_SSSID_SPARE 0x60 /* Unused bits in SSID for standard AX.25 */
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#define AX25_ESSID_SPARE 0x20 /* Unused bits in SSID for extended AX.25 */
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#define AX25_DAMA_FLAG 0x20 /* Well, it is *NOT* unused! (dl1bke 951121 */
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#define AX25_COND_ACK_PENDING 0x01
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#define AX25_COND_REJECT 0x02
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#define AX25_COND_PEER_RX_BUSY 0x04
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#define AX25_COND_OWN_RX_BUSY 0x08
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#ifndef _LINUX_NETDEVICE_H
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#include <linux/netdevice.h>
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#endif
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/*
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* These headers are taken from the KA9Q package by Phil Karn. These specific
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* files have been placed under the GPL (not the whole package) by Phil.
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*
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*
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* Copyright 1991 Phil Karn, KA9Q
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 dated June, 1991.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave., Cambridge, MA 02139, USA.
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*/
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/* Upper sub-layer (LAPB) definitions */
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/* Control field templates */
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#define AX25_I 0x00 /* Information frames */
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#define AX25_S 0x01 /* Supervisory frames */
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#define AX25_RR 0x01 /* Receiver ready */
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#define AX25_RNR 0x05 /* Receiver not ready */
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#define AX25_REJ 0x09 /* Reject */
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#define AX25_U 0x03 /* Unnumbered frames */
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#define AX25_SABM 0x2f /* Set Asynchronous Balanced Mode */
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#define AX25_SABME 0x6f /* Set Asynchronous Balanced Mode Extended */
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#define AX25_DISC 0x43 /* Disconnect */
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#define AX25_DM 0x0f /* Disconnected mode */
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#define AX25_UA 0x63 /* Unnumbered acknowledge */
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#define AX25_FRMR 0x87 /* Frame reject */
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#define AX25_UI 0x03 /* Unnumbered information */
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#define AX25_PF 0x10 /* Poll/final bit for standard AX.25 */
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#define AX25_EPF 0x01 /* Poll/final bit for extended AX.25 */
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#define AX25_ILLEGAL 0x100 /* Impossible to be a real frame type */
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#define AX25_POLLOFF 0
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#define AX25_POLLON 1
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/* AX25 L2 C-bit */
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#define AX25_COMMAND 1
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#define AX25_RESPONSE 2
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/* Define Link State constants. */
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enum {
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AX25_STATE_0,
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AX25_STATE_1,
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AX25_STATE_2,
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AX25_STATE_3,
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AX25_STATE_4
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};
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#define AX25_MAX_DEVICES 20 /* Max No of AX.25 devices */
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#define AX25_MODULUS 8 /* Standard AX.25 modulus */
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#define AX25_EMODULUS 128 /* Extended AX.25 modulus */
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enum {
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AX25_VALUES_IPDEFMODE, /* 0=DG 1=VC */
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AX25_VALUES_AXDEFMODE, /* 0=Normal 1=Extended Seq Nos */
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AX25_VALUES_BACKOFF, /* 0=None 1=Linear 2=Exponential */
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AX25_VALUES_CONMODE, /* Allow connected modes - 0=No 1=no "PID text" 2=all PIDs */
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AX25_VALUES_WINDOW, /* Default window size for standard AX.25 */
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AX25_VALUES_EWINDOW, /* Default window size for extended AX.25 */
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AX25_VALUES_T1, /* Default T1 timeout value */
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AX25_VALUES_T2, /* Default T2 timeout value */
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AX25_VALUES_T3, /* Default T3 timeout value */
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AX25_VALUES_IDLE, /* Connected mode idle timer */
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AX25_VALUES_N2, /* Default N2 value */
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AX25_VALUES_PACLEN, /* AX.25 MTU */
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AX25_MAX_VALUES /* THIS MUST REMAIN THE LAST ENTRY OF THIS LIST */
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};
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#define AX25_DEF_IPDEFMODE 0 /* Datagram */
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#define AX25_DEF_AXDEFMODE 0 /* Normal */
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#define AX25_DEF_BACKOFF 1 /* Linear backoff */
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#define AX25_DEF_CONMODE 2 /* Connected mode allowed */
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#define AX25_DEF_WINDOW 2 /* Window=2 */
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#define AX25_DEF_EWINDOW 32 /* Module-128 Window=32 */
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#define AX25_DEF_T1 (10 * AX25_SLOWHZ) /* T1=10s */
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#define AX25_DEF_T2 (3 * AX25_SLOWHZ) /* T2=3s */
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#define AX25_DEF_T3 (300 * AX25_SLOWHZ) /* T3=300s */
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#define AX25_DEF_N2 10 /* N2=10 */
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#define AX25_DEF_IDLE (0 * 60 * AX25_SLOWHZ) /* Idle=None */
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#define AX25_DEF_PACLEN 256 /* Paclen=256 */
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typedef struct ax25_uid_assoc {
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struct ax25_uid_assoc *next;
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uid_t uid;
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ax25_address call;
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} ax25_uid_assoc;
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typedef struct {
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ax25_address calls[AX25_MAX_DIGIS];
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unsigned char repeated[AX25_MAX_DIGIS];
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unsigned char ndigi;
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char lastrepeat;
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} ax25_digi;
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typedef struct ax25_cb {
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struct ax25_cb *next;
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ax25_address source_addr, dest_addr;
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struct device *device;
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unsigned char dama_slave, iamdigi;
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unsigned char state, modulus, pidincl;
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unsigned short vs, vr, va;
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unsigned char condition, backoff;
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unsigned char n2, n2count;
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unsigned short t1, t2, t3, idle, rtt;
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unsigned short t1timer, t2timer, t3timer, idletimer;
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unsigned short paclen;
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unsigned short fragno, fraglen;
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ax25_digi *digipeat;
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struct sk_buff_head write_queue;
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struct sk_buff_head reseq_queue;
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struct sk_buff_head ack_queue;
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struct sk_buff_head frag_queue;
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unsigned char window;
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struct timer_list timer;
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struct sock *sk; /* Backlink to socket */
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} ax25_cb;
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#ifndef _LINUX_SYSCTL_H
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#include <linux/sysctl.h>
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#endif
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struct ax25_dev {
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char name[20];
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struct device *dev;
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struct device *forward;
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struct ctl_table systable[AX25_MAX_VALUES+1];
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int values[AX25_MAX_VALUES];
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};
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/* af_ax25.c */
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extern ax25_address null_ax25_address;
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extern char *ax2asc(ax25_address *);
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extern ax25_address *asc2ax(char *);
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extern int ax25cmp(ax25_address *, ax25_address *);
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extern ax25_cb *ax25_send_frame(struct sk_buff *, int, ax25_address *, ax25_address *, ax25_digi *, struct device *);
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extern ax25_cb *ax25_find_cb(ax25_address *, ax25_address *, ax25_digi *, struct device *);
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extern void ax25_destroy_socket(ax25_cb *);
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extern struct device *ax25rtr_get_dev(ax25_address *);
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extern int ax25_encapsulate(struct sk_buff *, struct device *, unsigned short,
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void *, void *, unsigned int);
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extern int ax25_rebuild_header(void *, struct device *, unsigned long, struct sk_buff *);
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extern ax25_uid_assoc *ax25_uid_list;
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extern int ax25_uid_policy;
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extern ax25_address *ax25_findbyuid(uid_t);
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extern void ax25_queue_xmit(struct sk_buff *, struct device *, int);
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extern int ax25_dev_is_dama_slave(struct device *); /* dl1bke 951121 */
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#include <net/ax25call.h>
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/* ax25_in.c */
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extern int ax25_process_rx_frame(ax25_cb *, struct sk_buff *, int, int);
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/* ax25_out.c */
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extern void ax25_output(ax25_cb *, int, struct sk_buff *);
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extern void ax25_kick(ax25_cb *);
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extern void ax25_transmit_buffer(ax25_cb *, struct sk_buff *, int);
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extern void ax25_nr_error_recovery(ax25_cb *);
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extern void ax25_establish_data_link(ax25_cb *);
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extern void ax25_transmit_enquiry(ax25_cb *);
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extern void ax25_enquiry_response(ax25_cb *);
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extern void ax25_timeout_response(ax25_cb *);
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extern void ax25_check_iframes_acked(ax25_cb *, unsigned short);
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extern void dama_enquiry_response(ax25_cb *); /* dl1bke 960114 */
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extern void dama_establish_data_link(ax25_cb *);
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/* ax25_route.c */
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extern struct ax25_dev ax25_device[];
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extern int ax25_rt_get_info(char *, char **, off_t, int, int);
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extern int ax25_cs_get_info(char *, char **, off_t, int, int);
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extern int ax25_rt_autobind(ax25_cb *, ax25_address *);
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extern ax25_digi *ax25_rt_find_path(ax25_address *, struct device *);
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extern void ax25_rt_build_path(struct sk_buff *, ax25_address *, ax25_address *, ax25_digi *);
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extern void ax25_rt_device_down(struct device *);
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extern int ax25_rt_ioctl(unsigned int, void *);
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extern char ax25_rt_mode_get(ax25_address *, struct device *);
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extern int ax25_dev_get_value(struct device *, int);
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extern void ax25_dev_device_up(struct device *);
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extern void ax25_dev_device_down(struct device *);
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extern int ax25_fwd_ioctl(unsigned int, struct ax25_fwd_struct *);
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extern struct device *ax25_fwd_dev(struct device *);
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extern void ax25_rt_free(void);
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| 248 |
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/* ax25_subr.c */
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extern void ax25_clear_queues(ax25_cb *);
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extern void ax25_frames_acked(ax25_cb *, unsigned short);
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extern void ax25_requeue_frames(ax25_cb *);
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extern int ax25_validate_nr(ax25_cb *, unsigned short);
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extern int ax25_decode(ax25_cb *, struct sk_buff *, int *, int *, int *);
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extern void ax25_send_control(ax25_cb *, int, int, int);
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extern unsigned short ax25_calculate_t1(ax25_cb *);
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extern void ax25_calculate_rtt(ax25_cb *);
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extern unsigned char *ax25_parse_addr(unsigned char *, int, ax25_address *,
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ax25_address *, ax25_digi *, int *, int *); /* dl1bke 951121 */
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extern int build_ax25_addr(unsigned char *, ax25_address *, ax25_address *,
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ax25_digi *, int, int);
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extern int size_ax25_addr(ax25_digi *);
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extern void ax25_digi_invert(ax25_digi *, ax25_digi *);
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extern void ax25_return_dm(struct device *, ax25_address *, ax25_address *, ax25_digi *);
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extern void ax25_dama_on(ax25_cb *); /* dl1bke 951121 */
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extern void ax25_dama_off(ax25_cb *); /* dl1bke 951121 */
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| 266 |
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extern void ax25_disconnect(ax25_cb *, int);
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| 267 |
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| 268 |
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/* ax25_timer.c */
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extern void ax25_set_timer(ax25_cb *);
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extern void ax25_t1_timeout(ax25_cb *);
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extern void ax25_link_failed(ax25_cb *, int);
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extern int (*ax25_protocol_function(unsigned int))(struct sk_buff *, ax25_cb *);
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extern int ax25_listen_mine(ax25_address *, struct device *);
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| 275 |
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/* sysctl_net_ax25.c */
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extern void ax25_register_sysctl(void);
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extern void ax25_unregister_sysctl(void);
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| 279 |
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/* ... */
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| 281 |
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extern ax25_cb *volatile ax25_list;
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| 282 |
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| 283 |
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/* support routines for modules that use AX.25, in ax25_timer.c */
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| 284 |
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extern int ax25_protocol_register(unsigned int, int (*)(struct sk_buff *, ax25_cb *));
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| 285 |
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extern void ax25_protocol_release(unsigned int);
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| 286 |
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extern int ax25_linkfail_register(void (*)(ax25_cb *, int));
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| 287 |
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extern void ax25_linkfail_release(void (*)(ax25_cb *, int));
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extern int ax25_listen_register(ax25_address *, struct device *);
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extern void ax25_listen_release(ax25_address *, struct device *);
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extern int ax25_protocol_is_registered(unsigned int);
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#endif
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