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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 | /* * Declarations of AX.25 type objects. * * Alan Cox (GW4PTS) 10/11/93 */ #ifndef _AX25_H #define _AX25_H #include <linux/ax25.h> #include <linux/spinlock.h> #include <linux/timer.h> #include <linux/list.h> #include <linux/slab.h> #include <linux/atomic.h> #define AX25_T1CLAMPLO 1 #define AX25_T1CLAMPHI (30 * HZ) #define AX25_BPQ_HEADER_LEN 16 #define AX25_KISS_HEADER_LEN 1 #define AX25_HEADER_LEN 17 #define AX25_ADDR_LEN 7 #define AX25_DIGI_HEADER_LEN (AX25_MAX_DIGIS * AX25_ADDR_LEN) #define AX25_MAX_HEADER_LEN (AX25_HEADER_LEN + AX25_DIGI_HEADER_LEN) /* AX.25 Protocol IDs */ #define AX25_P_ROSE 0x01 #define AX25_P_VJCOMP 0x06 /* Compressed TCP/IP packet */ /* Van Jacobsen (RFC 1144) */ #define AX25_P_VJUNCOMP 0x07 /* Uncompressed TCP/IP packet */ /* Van Jacobsen (RFC 1144) */ #define AX25_P_SEGMENT 0x08 /* Segmentation fragment */ #define AX25_P_TEXNET 0xc3 /* TEXTNET datagram protocol */ #define AX25_P_LQ 0xc4 /* Link Quality Protocol */ #define AX25_P_ATALK 0xca /* Appletalk */ #define AX25_P_ATALK_ARP 0xcb /* Appletalk ARP */ #define AX25_P_IP 0xcc /* ARPA Internet Protocol */ #define AX25_P_ARP 0xcd /* ARPA Address Resolution */ #define AX25_P_FLEXNET 0xce /* FlexNet */ #define AX25_P_NETROM 0xcf /* NET/ROM */ #define AX25_P_TEXT 0xF0 /* No layer 3 protocol impl. */ /* AX.25 Segment control values */ #define AX25_SEG_REM 0x7F #define AX25_SEG_FIRST 0x80 #define AX25_CBIT 0x80 /* Command/Response bit */ #define AX25_EBIT 0x01 /* HDLC Address Extension bit */ #define AX25_HBIT 0x80 /* Has been repeated bit */ #define AX25_SSSID_SPARE 0x60 /* Unused bits in SSID for standard AX.25 */ #define AX25_ESSID_SPARE 0x20 /* Unused bits in SSID for extended AX.25 */ #define AX25_DAMA_FLAG 0x20 /* Well, it is *NOT* unused! (dl1bke 951121 */ #define AX25_COND_ACK_PENDING 0x01 #define AX25_COND_REJECT 0x02 #define AX25_COND_PEER_RX_BUSY 0x04 #define AX25_COND_OWN_RX_BUSY 0x08 #define AX25_COND_DAMA_MODE 0x10 #ifndef _LINUX_NETDEVICE_H #include <linux/netdevice.h> #endif /* Upper sub-layer (LAPB) definitions */ /* Control field templates */ #define AX25_I 0x00 /* Information frames */ #define AX25_S 0x01 /* Supervisory frames */ #define AX25_RR 0x01 /* Receiver ready */ #define AX25_RNR 0x05 /* Receiver not ready */ #define AX25_REJ 0x09 /* Reject */ #define AX25_U 0x03 /* Unnumbered frames */ #define AX25_SABM 0x2f /* Set Asynchronous Balanced Mode */ #define AX25_SABME 0x6f /* Set Asynchronous Balanced Mode Extended */ #define AX25_DISC 0x43 /* Disconnect */ #define AX25_DM 0x0f /* Disconnected mode */ #define AX25_UA 0x63 /* Unnumbered acknowledge */ #define AX25_FRMR 0x87 /* Frame reject */ #define AX25_UI 0x03 /* Unnumbered information */ #define AX25_XID 0xaf /* Exchange information */ #define AX25_TEST 0xe3 /* Test */ #define AX25_PF 0x10 /* Poll/final bit for standard AX.25 */ #define AX25_EPF 0x01 /* Poll/final bit for extended AX.25 */ #define AX25_ILLEGAL 0x100 /* Impossible to be a real frame type */ #define AX25_POLLOFF 0 #define AX25_POLLON 1 /* AX25 L2 C-bit */ #define AX25_COMMAND 1 #define AX25_RESPONSE 2 /* Define Link State constants. */ enum { AX25_STATE_0, /* Listening */ AX25_STATE_1, /* SABM sent */ AX25_STATE_2, /* DISC sent */ AX25_STATE_3, /* Established */ AX25_STATE_4 /* Recovery */ }; #define AX25_MODULUS 8 /* Standard AX.25 modulus */ #define AX25_EMODULUS 128 /* Extended AX.25 modulus */ enum { AX25_PROTO_STD_SIMPLEX, AX25_PROTO_STD_DUPLEX, #ifdef CONFIG_AX25_DAMA_SLAVE AX25_PROTO_DAMA_SLAVE, #ifdef CONFIG_AX25_DAMA_MASTER AX25_PROTO_DAMA_MASTER, #define AX25_PROTO_MAX AX25_PROTO_DAMA_MASTER #endif #endif __AX25_PROTO_MAX, AX25_PROTO_MAX = __AX25_PROTO_MAX -1 }; enum { AX25_VALUES_IPDEFMODE, /* 0=DG 1=VC */ AX25_VALUES_AXDEFMODE, /* 0=Normal 1=Extended Seq Nos */ AX25_VALUES_BACKOFF, /* 0=None 1=Linear 2=Exponential */ AX25_VALUES_CONMODE, /* Allow connected modes - 0=No 1=no "PID text" 2=all PIDs */ AX25_VALUES_WINDOW, /* Default window size for standard AX.25 */ AX25_VALUES_EWINDOW, /* Default window size for extended AX.25 */ AX25_VALUES_T1, /* Default T1 timeout value */ AX25_VALUES_T2, /* Default T2 timeout value */ AX25_VALUES_T3, /* Default T3 timeout value */ AX25_VALUES_IDLE, /* Connected mode idle timer */ AX25_VALUES_N2, /* Default N2 value */ AX25_VALUES_PACLEN, /* AX.25 MTU */ AX25_VALUES_PROTOCOL, /* Std AX.25, DAMA Slave, DAMA Master */ AX25_VALUES_DS_TIMEOUT, /* DAMA Slave timeout */ AX25_MAX_VALUES /* THIS MUST REMAIN THE LAST ENTRY OF THIS LIST */ }; #define AX25_DEF_IPDEFMODE 0 /* Datagram */ #define AX25_DEF_AXDEFMODE 0 /* Normal */ #define AX25_DEF_BACKOFF 1 /* Linear backoff */ #define AX25_DEF_CONMODE 2 /* Connected mode allowed */ #define AX25_DEF_WINDOW 2 /* Window=2 */ #define AX25_DEF_EWINDOW 32 /* Module-128 Window=32 */ #define AX25_DEF_T1 10000 /* T1=10s */ #define AX25_DEF_T2 3000 /* T2=3s */ #define AX25_DEF_T3 300000 /* T3=300s */ #define AX25_DEF_N2 10 /* N2=10 */ #define AX25_DEF_IDLE 0 /* Idle=None */ #define AX25_DEF_PACLEN 256 /* Paclen=256 */ #define AX25_DEF_PROTOCOL AX25_PROTO_STD_SIMPLEX /* Standard AX.25 */ #define AX25_DEF_DS_TIMEOUT 180000 /* DAMA timeout 3 minutes */ typedef struct ax25_uid_assoc { struct hlist_node uid_node; atomic_t refcount; kuid_t uid; ax25_address call; } ax25_uid_assoc; #define ax25_uid_for_each(__ax25, list) \ hlist_for_each_entry(__ax25, list, uid_node) #define ax25_uid_hold(ax25) \ atomic_inc(&((ax25)->refcount)) static inline void ax25_uid_put(ax25_uid_assoc *assoc) { if (atomic_dec_and_test(&assoc->refcount)) { kfree(assoc); } } typedef struct { ax25_address calls[AX25_MAX_DIGIS]; unsigned char repeated[AX25_MAX_DIGIS]; unsigned char ndigi; signed char lastrepeat; } ax25_digi; typedef struct ax25_route { struct ax25_route *next; atomic_t refcount; ax25_address callsign; struct net_device *dev; ax25_digi *digipeat; char ip_mode; } ax25_route; static inline void ax25_hold_route(ax25_route *ax25_rt) { atomic_inc(&ax25_rt->refcount); } extern void __ax25_put_route(ax25_route *ax25_rt); static inline void ax25_put_route(ax25_route *ax25_rt) { if (atomic_dec_and_test(&ax25_rt->refcount)) __ax25_put_route(ax25_rt); } typedef struct { char slave; /* slave_mode? */ struct timer_list slave_timer; /* timeout timer */ unsigned short slave_timeout; /* when? */ } ax25_dama_info; struct ctl_table; typedef struct ax25_dev { struct ax25_dev *next; struct net_device *dev; struct net_device *forward; struct ctl_table_header *sysheader; int values[AX25_MAX_VALUES]; #if defined(CONFIG_AX25_DAMA_SLAVE) || defined(CONFIG_AX25_DAMA_MASTER) ax25_dama_info dama; #endif } ax25_dev; typedef struct ax25_cb { struct hlist_node ax25_node; ax25_address source_addr, dest_addr; ax25_digi *digipeat; ax25_dev *ax25_dev; unsigned char iamdigi; unsigned char state, modulus, pidincl; unsigned short vs, vr, va; unsigned char condition, backoff; unsigned char n2, n2count; struct timer_list t1timer, t2timer, t3timer, idletimer; unsigned long t1, t2, t3, idle, rtt; unsigned short paclen, fragno, fraglen; struct sk_buff_head write_queue; struct sk_buff_head reseq_queue; struct sk_buff_head ack_queue; struct sk_buff_head frag_queue; unsigned char window; struct timer_list timer, dtimer; struct sock *sk; /* Backlink to socket */ atomic_t refcount; } ax25_cb; #define ax25_sk(__sk) ((ax25_cb *)(__sk)->sk_protinfo) #define ax25_for_each(__ax25, list) \ hlist_for_each_entry(__ax25, list, ax25_node) #define ax25_cb_hold(__ax25) \ atomic_inc(&((__ax25)->refcount)) static __inline__ void ax25_cb_put(ax25_cb *ax25) { if (atomic_dec_and_test(&ax25->refcount)) { kfree(ax25->digipeat); kfree(ax25); } } static inline __be16 ax25_type_trans(struct sk_buff *skb, struct net_device *dev) { skb->dev = dev; skb_reset_mac_header(skb); skb->pkt_type = PACKET_HOST; return htons(ETH_P_AX25); } /* af_ax25.c */ extern struct hlist_head ax25_list; extern spinlock_t ax25_list_lock; extern void ax25_cb_add(ax25_cb *); struct sock *ax25_find_listener(ax25_address *, int, struct net_device *, int); struct sock *ax25_get_socket(ax25_address *, ax25_address *, int); extern ax25_cb *ax25_find_cb(ax25_address *, ax25_address *, ax25_digi *, struct net_device *); extern void ax25_send_to_raw(ax25_address *, struct sk_buff *, int); extern void ax25_destroy_socket(ax25_cb *); extern ax25_cb * __must_check ax25_create_cb(void); extern void ax25_fillin_cb(ax25_cb *, ax25_dev *); extern struct sock *ax25_make_new(struct sock *, struct ax25_dev *); /* ax25_addr.c */ extern const ax25_address ax25_bcast; extern const ax25_address ax25_defaddr; extern const ax25_address null_ax25_address; extern char *ax2asc(char *buf, const ax25_address *); extern void asc2ax(ax25_address *addr, const char *callsign); extern int ax25cmp(const ax25_address *, const ax25_address *); extern int ax25digicmp(const ax25_digi *, const ax25_digi *); extern const unsigned char *ax25_addr_parse(const unsigned char *, int, ax25_address *, ax25_address *, ax25_digi *, int *, int *); extern int ax25_addr_build(unsigned char *, const ax25_address *, const ax25_address *, const ax25_digi *, int, int); extern int ax25_addr_size(const ax25_digi *); extern void ax25_digi_invert(const ax25_digi *, ax25_digi *); /* ax25_dev.c */ extern ax25_dev *ax25_dev_list; extern spinlock_t ax25_dev_lock; static inline ax25_dev *ax25_dev_ax25dev(struct net_device *dev) { return dev->ax25_ptr; } extern ax25_dev *ax25_addr_ax25dev(ax25_address *); extern void ax25_dev_device_up(struct net_device *); extern void ax25_dev_device_down(struct net_device *); extern int ax25_fwd_ioctl(unsigned int, struct ax25_fwd_struct *); extern struct net_device *ax25_fwd_dev(struct net_device *); extern void ax25_dev_free(void); /* ax25_ds_in.c */ extern int ax25_ds_frame_in(ax25_cb *, struct sk_buff *, int); /* ax25_ds_subr.c */ extern void ax25_ds_nr_error_recovery(ax25_cb *); extern void ax25_ds_enquiry_response(ax25_cb *); extern void ax25_ds_establish_data_link(ax25_cb *); extern void ax25_dev_dama_off(ax25_dev *); extern void ax25_dama_on(ax25_cb *); extern void ax25_dama_off(ax25_cb *); /* ax25_ds_timer.c */ extern void ax25_ds_setup_timer(ax25_dev *); extern void ax25_ds_set_timer(ax25_dev *); extern void ax25_ds_del_timer(ax25_dev *); extern void ax25_ds_timer(ax25_cb *); extern void ax25_ds_t1_timeout(ax25_cb *); extern void ax25_ds_heartbeat_expiry(ax25_cb *); extern void ax25_ds_t3timer_expiry(ax25_cb *); extern void ax25_ds_idletimer_expiry(ax25_cb *); /* ax25_iface.c */ struct ax25_protocol { struct ax25_protocol *next; unsigned int pid; int (*func)(struct sk_buff *, ax25_cb *); }; extern void ax25_register_pid(struct ax25_protocol *ap); extern void ax25_protocol_release(unsigned int); struct ax25_linkfail { struct hlist_node lf_node; void (*func)(ax25_cb *, int); }; extern void ax25_linkfail_register(struct ax25_linkfail *lf); extern void ax25_linkfail_release(struct ax25_linkfail *lf); extern int __must_check ax25_listen_register(ax25_address *, struct net_device *); extern void ax25_listen_release(ax25_address *, struct net_device *); extern int (*ax25_protocol_function(unsigned int))(struct sk_buff *, ax25_cb *); extern int ax25_listen_mine(ax25_address *, struct net_device *); extern void ax25_link_failed(ax25_cb *, int); extern int ax25_protocol_is_registered(unsigned int); /* ax25_in.c */ extern int ax25_rx_iframe(ax25_cb *, struct sk_buff *); extern int ax25_kiss_rcv(struct sk_buff *, struct net_device *, struct packet_type *, struct net_device *); /* ax25_ip.c */ extern int ax25_hard_header(struct sk_buff *, struct net_device *, unsigned short, const void *, const void *, unsigned int); extern int ax25_rebuild_header(struct sk_buff *); extern const struct header_ops ax25_header_ops; /* ax25_out.c */ extern ax25_cb *ax25_send_frame(struct sk_buff *, int, ax25_address *, ax25_address *, ax25_digi *, struct net_device *); extern void ax25_output(ax25_cb *, int, struct sk_buff *); extern void ax25_kick(ax25_cb *); extern void ax25_transmit_buffer(ax25_cb *, struct sk_buff *, int); extern void ax25_queue_xmit(struct sk_buff *skb, struct net_device *dev); extern int ax25_check_iframes_acked(ax25_cb *, unsigned short); /* ax25_route.c */ extern void ax25_rt_device_down(struct net_device *); extern int ax25_rt_ioctl(unsigned int, void __user *); extern const struct file_operations ax25_route_fops; extern ax25_route *ax25_get_route(ax25_address *addr, struct net_device *dev); extern int ax25_rt_autobind(ax25_cb *, ax25_address *); extern struct sk_buff *ax25_rt_build_path(struct sk_buff *, ax25_address *, ax25_address *, ax25_digi *); extern void ax25_rt_free(void); /* ax25_std_in.c */ extern int ax25_std_frame_in(ax25_cb *, struct sk_buff *, int); /* ax25_std_subr.c */ extern void ax25_std_nr_error_recovery(ax25_cb *); extern void ax25_std_establish_data_link(ax25_cb *); extern void ax25_std_transmit_enquiry(ax25_cb *); extern void ax25_std_enquiry_response(ax25_cb *); extern void ax25_std_timeout_response(ax25_cb *); /* ax25_std_timer.c */ extern void ax25_std_heartbeat_expiry(ax25_cb *); extern void ax25_std_t1timer_expiry(ax25_cb *); extern void ax25_std_t2timer_expiry(ax25_cb *); extern void ax25_std_t3timer_expiry(ax25_cb *); extern void ax25_std_idletimer_expiry(ax25_cb *); /* ax25_subr.c */ extern void ax25_clear_queues(ax25_cb *); extern void ax25_frames_acked(ax25_cb *, unsigned short); extern void ax25_requeue_frames(ax25_cb *); extern int ax25_validate_nr(ax25_cb *, unsigned short); extern int ax25_decode(ax25_cb *, struct sk_buff *, int *, int *, int *); extern void ax25_send_control(ax25_cb *, int, int, int); extern void ax25_return_dm(struct net_device *, ax25_address *, ax25_address *, ax25_digi *); extern void ax25_calculate_t1(ax25_cb *); extern void ax25_calculate_rtt(ax25_cb *); extern void ax25_disconnect(ax25_cb *, int); /* ax25_timer.c */ extern void ax25_setup_timers(ax25_cb *); extern void ax25_start_heartbeat(ax25_cb *); extern void ax25_start_t1timer(ax25_cb *); extern void ax25_start_t2timer(ax25_cb *); extern void ax25_start_t3timer(ax25_cb *); extern void ax25_start_idletimer(ax25_cb *); extern void ax25_stop_heartbeat(ax25_cb *); extern void ax25_stop_t1timer(ax25_cb *); extern void ax25_stop_t2timer(ax25_cb *); extern void ax25_stop_t3timer(ax25_cb *); extern void ax25_stop_idletimer(ax25_cb *); extern int ax25_t1timer_running(ax25_cb *); extern unsigned long ax25_display_timer(struct timer_list *); /* ax25_uid.c */ extern int ax25_uid_policy; extern ax25_uid_assoc *ax25_findbyuid(kuid_t); extern int __must_check ax25_uid_ioctl(int, struct sockaddr_ax25 *); extern const struct file_operations ax25_uid_fops; extern void ax25_uid_free(void); /* sysctl_net_ax25.c */ #ifdef CONFIG_SYSCTL extern int ax25_register_dev_sysctl(ax25_dev *ax25_dev); extern void ax25_unregister_dev_sysctl(ax25_dev *ax25_dev); #else static inline int ax25_register_dev_sysctl(ax25_dev *ax25_dev) { return 0; } static inline void ax25_unregister_dev_sysctl(ax25_dev *ax25_dev) {} #endif /* CONFIG_SYSCTL */ #endif |