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1.1 ! root 1: /* ! 2: * Declarations of AX.25 type objects. ! 3: * ! 4: * Alan Cox (GW4PTS) 10/11/93 ! 5: */ ! 6: ! 7: #ifndef _AX25_H ! 8: #define _AX25_H ! 9: #include <linux/ax25.h> ! 10: ! 11: #define AX25_SLOWHZ 10 /* Run timing at 1/10 second - gives us better resolution for 56kbit links */ ! 12: ! 13: #define AX25_T1CLAMPLO (1 * AX25_SLOWHZ) /* If defined, clamp at 1 second **/ ! 14: #define AX25_T1CLAMPHI (30 * AX25_SLOWHZ) /* If defined, clamp at 30 seconds **/ ! 15: ! 16: #define AX25_BPQ_HEADER_LEN 16 ! 17: #define AX25_KISS_HEADER_LEN 1 ! 18: ! 19: #define AX25_HEADER_LEN 17 ! 20: #define AX25_ADDR_LEN 7 ! 21: #define AX25_DIGI_HEADER_LEN (AX25_MAX_DIGIS * AX25_ADDR_LEN) ! 22: #define AX25_MAX_HEADER_LEN (AX25_HEADER_LEN + AX25_DIGI_HEADER_LEN) ! 23: ! 24: /* AX.25 Protocol IDs */ ! 25: #define AX25_P_ROSE 0x01 ! 26: #define AX25_P_IP 0xCC ! 27: #define AX25_P_ARP 0xCD ! 28: #define AX25_P_TEXT 0xF0 ! 29: #define AX25_P_NETROM 0xCF ! 30: #define AX25_P_SEGMENT 0x08 ! 31: ! 32: /* AX.25 Segment control values */ ! 33: #define AX25_SEG_REM 0x7F ! 34: #define AX25_SEG_FIRST 0x80 ! 35: ! 36: #define AX25_CBIT 0x80 /* Command/Response bit */ ! 37: #define AX25_EBIT 0x01 /* HDLC Address Extension bit */ ! 38: #define AX25_HBIT 0x80 /* Has been repeated bit */ ! 39: ! 40: #define AX25_SSSID_SPARE 0x60 /* Unused bits in SSID for standard AX.25 */ ! 41: #define AX25_ESSID_SPARE 0x20 /* Unused bits in SSID for extended AX.25 */ ! 42: #define AX25_DAMA_FLAG 0x20 /* Well, it is *NOT* unused! (dl1bke 951121 */ ! 43: ! 44: #define AX25_COND_ACK_PENDING 0x01 ! 45: #define AX25_COND_REJECT 0x02 ! 46: #define AX25_COND_PEER_RX_BUSY 0x04 ! 47: #define AX25_COND_OWN_RX_BUSY 0x08 ! 48: ! 49: #ifndef _LINUX_NETDEVICE_H ! 50: #include <linux/netdevice.h> ! 51: #endif ! 52: ! 53: /* ! 54: * These headers are taken from the KA9Q package by Phil Karn. These specific ! 55: * files have been placed under the GPL (not the whole package) by Phil. ! 56: * ! 57: * ! 58: * Copyright 1991 Phil Karn, KA9Q ! 59: * ! 60: * This program is free software; you can redistribute it and/or modify ! 61: * it under the terms of the GNU General Public License as published by ! 62: * the Free Software Foundation; version 2 dated June, 1991. ! 63: * ! 64: * This program is distributed in the hope that it will be useful, ! 65: * but WITHOUT ANY WARRANTY; without even the implied warranty of ! 66: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ! 67: * GNU General Public License for more details. ! 68: * ! 69: * You should have received a copy of the GNU General Public License ! 70: * along with this program; if not, write to the Free Software ! 71: * Foundation, Inc., 675 Mass Ave., Cambridge, MA 02139, USA. ! 72: */ ! 73: ! 74: /* Upper sub-layer (LAPB) definitions */ ! 75: ! 76: /* Control field templates */ ! 77: #define AX25_I 0x00 /* Information frames */ ! 78: #define AX25_S 0x01 /* Supervisory frames */ ! 79: #define AX25_RR 0x01 /* Receiver ready */ ! 80: #define AX25_RNR 0x05 /* Receiver not ready */ ! 81: #define AX25_REJ 0x09 /* Reject */ ! 82: #define AX25_U 0x03 /* Unnumbered frames */ ! 83: #define AX25_SABM 0x2f /* Set Asynchronous Balanced Mode */ ! 84: #define AX25_SABME 0x6f /* Set Asynchronous Balanced Mode Extended */ ! 85: #define AX25_DISC 0x43 /* Disconnect */ ! 86: #define AX25_DM 0x0f /* Disconnected mode */ ! 87: #define AX25_UA 0x63 /* Unnumbered acknowledge */ ! 88: #define AX25_FRMR 0x87 /* Frame reject */ ! 89: #define AX25_UI 0x03 /* Unnumbered information */ ! 90: ! 91: #define AX25_PF 0x10 /* Poll/final bit for standard AX.25 */ ! 92: #define AX25_EPF 0x01 /* Poll/final bit for extended AX.25 */ ! 93: ! 94: #define AX25_ILLEGAL 0x100 /* Impossible to be a real frame type */ ! 95: ! 96: #define AX25_POLLOFF 0 ! 97: #define AX25_POLLON 1 ! 98: ! 99: /* AX25 L2 C-bit */ ! 100: #define AX25_COMMAND 1 ! 101: #define AX25_RESPONSE 2 ! 102: ! 103: /* Define Link State constants. */ ! 104: ! 105: enum { ! 106: AX25_STATE_0, ! 107: AX25_STATE_1, ! 108: AX25_STATE_2, ! 109: AX25_STATE_3, ! 110: AX25_STATE_4 ! 111: }; ! 112: ! 113: #define AX25_MAX_DEVICES 20 /* Max No of AX.25 devices */ ! 114: ! 115: #define AX25_MODULUS 8 /* Standard AX.25 modulus */ ! 116: #define AX25_EMODULUS 128 /* Extended AX.25 modulus */ ! 117: ! 118: enum { ! 119: AX25_VALUES_IPDEFMODE, /* 0=DG 1=VC */ ! 120: AX25_VALUES_AXDEFMODE, /* 0=Normal 1=Extended Seq Nos */ ! 121: AX25_VALUES_BACKOFF, /* 0=None 1=Linear 2=Exponential */ ! 122: AX25_VALUES_CONMODE, /* Allow connected modes - 0=No 1=no "PID text" 2=all PIDs */ ! 123: AX25_VALUES_WINDOW, /* Default window size for standard AX.25 */ ! 124: AX25_VALUES_EWINDOW, /* Default window size for extended AX.25 */ ! 125: AX25_VALUES_T1, /* Default T1 timeout value */ ! 126: AX25_VALUES_T2, /* Default T2 timeout value */ ! 127: AX25_VALUES_T3, /* Default T3 timeout value */ ! 128: AX25_VALUES_IDLE, /* Connected mode idle timer */ ! 129: AX25_VALUES_N2, /* Default N2 value */ ! 130: AX25_VALUES_PACLEN, /* AX.25 MTU */ ! 131: AX25_MAX_VALUES /* THIS MUST REMAIN THE LAST ENTRY OF THIS LIST */ ! 132: }; ! 133: ! 134: #define AX25_DEF_IPDEFMODE 0 /* Datagram */ ! 135: #define AX25_DEF_AXDEFMODE 0 /* Normal */ ! 136: #define AX25_DEF_BACKOFF 1 /* Linear backoff */ ! 137: #define AX25_DEF_CONMODE 2 /* Connected mode allowed */ ! 138: #define AX25_DEF_WINDOW 2 /* Window=2 */ ! 139: #define AX25_DEF_EWINDOW 32 /* Module-128 Window=32 */ ! 140: #define AX25_DEF_T1 (10 * AX25_SLOWHZ) /* T1=10s */ ! 141: #define AX25_DEF_T2 (3 * AX25_SLOWHZ) /* T2=3s */ ! 142: #define AX25_DEF_T3 (300 * AX25_SLOWHZ) /* T3=300s */ ! 143: #define AX25_DEF_N2 10 /* N2=10 */ ! 144: #define AX25_DEF_IDLE (0 * 60 * AX25_SLOWHZ) /* Idle=None */ ! 145: #define AX25_DEF_PACLEN 256 /* Paclen=256 */ ! 146: ! 147: typedef struct ax25_uid_assoc { ! 148: struct ax25_uid_assoc *next; ! 149: uid_t uid; ! 150: ax25_address call; ! 151: } ax25_uid_assoc; ! 152: ! 153: typedef struct { ! 154: ax25_address calls[AX25_MAX_DIGIS]; ! 155: unsigned char repeated[AX25_MAX_DIGIS]; ! 156: unsigned char ndigi; ! 157: char lastrepeat; ! 158: } ax25_digi; ! 159: ! 160: typedef struct ax25_cb { ! 161: struct ax25_cb *next; ! 162: ax25_address source_addr, dest_addr; ! 163: struct device *device; ! 164: unsigned char dama_slave, iamdigi; ! 165: unsigned char state, modulus, pidincl; ! 166: unsigned short vs, vr, va; ! 167: unsigned char condition, backoff; ! 168: unsigned char n2, n2count; ! 169: unsigned short t1, t2, t3, idle, rtt; ! 170: unsigned short t1timer, t2timer, t3timer, idletimer; ! 171: unsigned short paclen; ! 172: unsigned short fragno, fraglen; ! 173: ax25_digi *digipeat; ! 174: struct sk_buff_head write_queue; ! 175: struct sk_buff_head reseq_queue; ! 176: struct sk_buff_head ack_queue; ! 177: struct sk_buff_head frag_queue; ! 178: unsigned char window; ! 179: struct timer_list timer; ! 180: struct sock *sk; /* Backlink to socket */ ! 181: } ax25_cb; ! 182: ! 183: #ifndef _LINUX_SYSCTL_H ! 184: #include <linux/sysctl.h> ! 185: #endif ! 186: ! 187: struct ax25_dev { ! 188: char name[20]; ! 189: struct device *dev; ! 190: struct device *forward; ! 191: struct ctl_table systable[AX25_MAX_VALUES+1]; ! 192: int values[AX25_MAX_VALUES]; ! 193: }; ! 194: ! 195: /* af_ax25.c */ ! 196: extern ax25_address null_ax25_address; ! 197: extern char *ax2asc(ax25_address *); ! 198: extern ax25_address *asc2ax(char *); ! 199: extern int ax25cmp(ax25_address *, ax25_address *); ! 200: extern ax25_cb *ax25_send_frame(struct sk_buff *, int, ax25_address *, ax25_address *, ax25_digi *, struct device *); ! 201: extern ax25_cb *ax25_find_cb(ax25_address *, ax25_address *, ax25_digi *, struct device *); ! 202: extern void ax25_destroy_socket(ax25_cb *); ! 203: extern struct device *ax25rtr_get_dev(ax25_address *); ! 204: extern int ax25_encapsulate(struct sk_buff *, struct device *, unsigned short, ! 205: void *, void *, unsigned int); ! 206: extern int ax25_rebuild_header(void *, struct device *, unsigned long, struct sk_buff *); ! 207: extern ax25_uid_assoc *ax25_uid_list; ! 208: extern int ax25_uid_policy; ! 209: extern ax25_address *ax25_findbyuid(uid_t); ! 210: extern void ax25_queue_xmit(struct sk_buff *, struct device *, int); ! 211: extern int ax25_dev_is_dama_slave(struct device *); /* dl1bke 951121 */ ! 212: ! 213: #include <net/ax25call.h> ! 214: ! 215: /* ax25_in.c */ ! 216: extern int ax25_process_rx_frame(ax25_cb *, struct sk_buff *, int, int); ! 217: ! 218: /* ax25_out.c */ ! 219: extern void ax25_output(ax25_cb *, int, struct sk_buff *); ! 220: extern void ax25_kick(ax25_cb *); ! 221: extern void ax25_transmit_buffer(ax25_cb *, struct sk_buff *, int); ! 222: extern void ax25_nr_error_recovery(ax25_cb *); ! 223: extern void ax25_establish_data_link(ax25_cb *); ! 224: extern void ax25_transmit_enquiry(ax25_cb *); ! 225: extern void ax25_enquiry_response(ax25_cb *); ! 226: extern void ax25_timeout_response(ax25_cb *); ! 227: extern void ax25_check_iframes_acked(ax25_cb *, unsigned short); ! 228: extern void dama_enquiry_response(ax25_cb *); /* dl1bke 960114 */ ! 229: extern void dama_establish_data_link(ax25_cb *); ! 230: ! 231: /* ax25_route.c */ ! 232: extern struct ax25_dev ax25_device[]; ! 233: extern int ax25_rt_get_info(char *, char **, off_t, int, int); ! 234: extern int ax25_cs_get_info(char *, char **, off_t, int, int); ! 235: extern int ax25_rt_autobind(ax25_cb *, ax25_address *); ! 236: extern ax25_digi *ax25_rt_find_path(ax25_address *, struct device *); ! 237: extern void ax25_rt_build_path(struct sk_buff *, ax25_address *, ax25_address *, ax25_digi *); ! 238: extern void ax25_rt_device_down(struct device *); ! 239: extern int ax25_rt_ioctl(unsigned int, void *); ! 240: extern char ax25_rt_mode_get(ax25_address *, struct device *); ! 241: extern int ax25_dev_get_value(struct device *, int); ! 242: extern void ax25_dev_device_up(struct device *); ! 243: extern void ax25_dev_device_down(struct device *); ! 244: extern int ax25_fwd_ioctl(unsigned int, struct ax25_fwd_struct *); ! 245: extern struct device *ax25_fwd_dev(struct device *); ! 246: extern void ax25_rt_free(void); ! 247: ! 248: /* ax25_subr.c */ ! 249: extern void ax25_clear_queues(ax25_cb *); ! 250: extern void ax25_frames_acked(ax25_cb *, unsigned short); ! 251: extern void ax25_requeue_frames(ax25_cb *); ! 252: extern int ax25_validate_nr(ax25_cb *, unsigned short); ! 253: extern int ax25_decode(ax25_cb *, struct sk_buff *, int *, int *, int *); ! 254: extern void ax25_send_control(ax25_cb *, int, int, int); ! 255: extern unsigned short ax25_calculate_t1(ax25_cb *); ! 256: extern void ax25_calculate_rtt(ax25_cb *); ! 257: extern unsigned char *ax25_parse_addr(unsigned char *, int, ax25_address *, ! 258: ax25_address *, ax25_digi *, int *, int *); /* dl1bke 951121 */ ! 259: extern int build_ax25_addr(unsigned char *, ax25_address *, ax25_address *, ! 260: ax25_digi *, int, int); ! 261: extern int size_ax25_addr(ax25_digi *); ! 262: extern void ax25_digi_invert(ax25_digi *, ax25_digi *); ! 263: extern void ax25_return_dm(struct device *, ax25_address *, ax25_address *, ax25_digi *); ! 264: extern void ax25_dama_on(ax25_cb *); /* dl1bke 951121 */ ! 265: extern void ax25_dama_off(ax25_cb *); /* dl1bke 951121 */ ! 266: extern void ax25_disconnect(ax25_cb *, int); ! 267: ! 268: /* ax25_timer.c */ ! 269: extern void ax25_set_timer(ax25_cb *); ! 270: extern void ax25_t1_timeout(ax25_cb *); ! 271: extern void ax25_link_failed(ax25_cb *, int); ! 272: extern int (*ax25_protocol_function(unsigned int))(struct sk_buff *, ax25_cb *); ! 273: extern int ax25_listen_mine(ax25_address *, struct device *); ! 274: ! 275: /* sysctl_net_ax25.c */ ! 276: extern void ax25_register_sysctl(void); ! 277: extern void ax25_unregister_sysctl(void); ! 278: ! 279: /* ... */ ! 280: ! 281: extern ax25_cb *volatile ax25_list; ! 282: ! 283: /* support routines for modules that use AX.25, in ax25_timer.c */ ! 284: extern int ax25_protocol_register(unsigned int, int (*)(struct sk_buff *, ax25_cb *)); ! 285: extern void ax25_protocol_release(unsigned int); ! 286: extern int ax25_linkfail_register(void (*)(ax25_cb *, int)); ! 287: extern void ax25_linkfail_release(void (*)(ax25_cb *, int)); ! 288: extern int ax25_listen_register(ax25_address *, struct device *); ! 289: extern void ax25_listen_release(ax25_address *, struct device *); ! 290: extern int ax25_protocol_is_registered(unsigned int); ! 291: ! 292: #endif
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