/* * Declarations of AX.25 type objects. * * Alan Cox (GW4PTS) 10/11/93 */ #ifndef _AX25_H #define _AX25_H #include #define AX25_P_IP 0xCC #define AX25_P_ARP 0xCD #define AX25_P_TEXT 0xF0 #define AX25_P_NETROM 0xCF #define LAPB_UI 0x03 #define LAPB_C 0x80 #define LAPB_E 0x01 #define SSID_SPARE 0x60 /* Unused bits (DAMA bit and spare must be 1) */ #define AX25_REPEATED 0x80 #define ACK_PENDING_CONDITION 0x01 #define REJECT_CONDITION 0x02 #define PEER_RX_BUSY_CONDITION 0x04 #define OWN_RX_BUSY_CONDITION 0x08 #ifndef _LINUX_NETDEVICE_H #include #endif /* * These headers are taken from the KA9Q package by Phil Karn. These specific * files have been placed under the GPL (not the whole package) by Phil. * * * Copyright 1991 Phil Karn, KA9Q * * This program 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; version 2 dated June, 1991. * * 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., 675 Mass Ave., Cambridge, MA 02139, USA. */ /* Upper sub-layer (LAPB) definitions */ /* Control field templates */ #define I 0x00 /* Information frames */ #define S 0x01 /* Supervisory frames */ #define RR 0x01 /* Receiver ready */ #define RNR 0x05 /* Receiver not ready */ #define REJ 0x09 /* Reject */ #define U 0x03 /* Unnumbered frames */ #define SABM 0x2f /* Set Asynchronous Balanced Mode */ #define SABME 0x6f /* Set Asynchronous Balanced Mode Extended */ #define DISC 0x43 /* Disconnect */ #define DM 0x0f /* Disconnected mode */ #define UA 0x63 /* Unnumbered acknowledge */ #define FRMR 0x87 /* Frame reject */ #define UI 0x03 /* Unnumbered information */ #define PF 0x10 /* Poll/final bit */ #define ILLEGAL 0x100 /* Impossible to be a real frame type */ #define MMASK 7 /* Mask for modulo-8 sequence numbers */ /* AX25 L2 C-bit */ #define C_COMMAND 1 /* C_ otherwise it clashes with the de600 defines (sigh)) */ #define C_RESPONSE 2 /* Define Link State constants. */ #define AX25_STATE_0 0 #define AX25_STATE_1 1 #define AX25_STATE_2 2 #define AX25_STATE_3 3 #define AX25_STATE_4 4 #define PR_SLOWHZ 10 /* Run timing at 1/10 second - gives us better resolution for 56kbit links */ #define DEFAULT_T1 (10 * PR_SLOWHZ) /* Outstanding frames - 10 seconds */ #define DEFAULT_T2 (3 * PR_SLOWHZ) /* Response delay - 3 seconds */ #define DEFAULT_T3 (300 * PR_SLOWHZ) /* Idle supervision - 300 seconds */ #define DEFAULT_N2 10 /* Number of retries */ #define DEFAULT_WINDOW 2 /* Default window size */ #define MODULUS 8 #define MAX_WINDOW_SIZE 7 /* Maximum window allowable */ typedef struct ax25_uid_assoc { struct ax25_uid_assoc *next; uid_t uid; ax25_address call; } ax25_uid_assoc; typedef struct { ax25_address calls[6]; unsigned char repeated[6]; unsigned char ndigi; char lastrepeat; } ax25_digi; typedef struct ax25_cb { struct ax25_cb *next; ax25_address source_addr, dest_addr; struct device *device; unsigned char state; unsigned short vs, vr, va; unsigned char condition; unsigned char n2, n2count; unsigned short t1, t2, t3, rtt; unsigned short t1timer, t2timer, t3timer; ax25_digi *digipeat; struct sk_buff_head write_queue; struct sk_buff_head ack_queue; unsigned char window; struct timer_list timer; struct sock *sk; /* Backlink to socket */ } ax25_cb; /* ax25.c */ extern char *ax2asc(ax25_address *); extern int ax25cmp(ax25_address *, ax25_address *); extern int ax25_send_frame(struct sk_buff *, ax25_address *, ax25_address *, struct device *); extern int ax25_rcv(struct sk_buff *,struct device *,struct packet_type *); extern void ax25_destroy_socket(ax25_cb *); extern struct device *ax25rtr_get_dev(ax25_address *); extern int ax25_encapsulate(unsigned char *, struct device *, unsigned short, void *, void *, unsigned int, struct sk_buff *); extern int ax25_rebuild_header(unsigned char *, struct device *, unsigned long, struct sk_buff *); extern int ax25_get_info(char *, char **, off_t, int); extern ax25_uid_assoc *ax25_uid_list; extern int ax25_uid_policy; extern ax25_address *ax25_findbyuid(uid_t); #include "ax25call.h" /* ax25_in.c */ extern int ax25_process_rx_frame(ax25_cb *, struct sk_buff *, int); /* ax25_out.c */ extern int ax25_output(ax25_cb *, struct sk_buff *); extern void ax25_kick(ax25_cb *); extern void ax25_transmit_buffer(ax25_cb *, struct sk_buff *, int); extern void ax25_nr_error_recovery(ax25_cb *); extern void ax25_establish_data_link(ax25_cb *); extern void ax25_transmit_enquiry(ax25_cb *); extern void ax25_enquiry_response(ax25_cb *); extern void ax25_check_iframes_acked(ax25_cb *, unsigned short); extern void ax25_check_need_response(ax25_cb *, int, int); /* ax25_route.c */ extern void ax25_rt_rx_frame(ax25_address *, struct device *); extern int ax25_rt_get_info(char *, char **, off_t, int); extern int ax25_cs_get_info(char *, char **, off_t, int); extern int ax25_rt_autobind(ax25_cb *, ax25_address *); extern void ax25_rt_device_down(struct device *); extern void ax25_ip_mode_set(ax25_address *, struct device *, char); extern char ax25_ip_mode_get(ax25_address *, struct device *); /* ax25_subr.c */ extern void ax25_clear_tx_queue(ax25_cb *); extern void ax25_frames_acked(ax25_cb *, unsigned short); extern int ax25_validate_nr(ax25_cb *, unsigned short); extern int ax25_decode(unsigned char *); extern void ax25_send_control(ax25_cb *, int, int); extern unsigned short ax25_calculate_t1(ax25_cb *); extern void ax25_calculate_rtt(ax25_cb *); extern unsigned char *ax25_parse_addr(unsigned char *, int, ax25_address *, ax25_address *, ax25_digi *, int *); extern int build_ax25_addr(unsigned char *, ax25_address *, ax25_address *, ax25_digi *, int); extern int size_ax25_addr(ax25_digi *); extern void ax25_digi_invert(ax25_digi *, ax25_digi *); extern void ax25_return_dm(struct device *, ax25_address *, ax25_address *, ax25_digi *); /* ax25_timer */ extern void ax25_set_timer(ax25_cb *); #endif