2 * Declarations of AX.25 type objects.
4 * Alan Cox (GW4PTS) 10/11/93
9 #include <linux/config.h>
10 #include <linux/ax25.h>
11 #include <linux/spinlock.h>
12 #include <linux/timer.h>
13 #include <linux/list.h>
14 #include <asm/atomic.h>
16 #define AX25_T1CLAMPLO 1
17 #define AX25_T1CLAMPHI (30 * HZ)
19 #define AX25_BPQ_HEADER_LEN 16
20 #define AX25_KISS_HEADER_LEN 1
22 #define AX25_HEADER_LEN 17
23 #define AX25_ADDR_LEN 7
24 #define AX25_DIGI_HEADER_LEN (AX25_MAX_DIGIS * AX25_ADDR_LEN)
25 #define AX25_MAX_HEADER_LEN (AX25_HEADER_LEN + AX25_DIGI_HEADER_LEN)
27 /* AX.25 Protocol IDs */
28 #define AX25_P_ROSE 0x01
29 #define AX25_P_IP 0xCC
30 #define AX25_P_ARP 0xCD
31 #define AX25_P_TEXT 0xF0
32 #define AX25_P_NETROM 0xCF
33 #define AX25_P_SEGMENT 0x08
35 /* AX.25 Segment control values */
36 #define AX25_SEG_REM 0x7F
37 #define AX25_SEG_FIRST 0x80
39 #define AX25_CBIT 0x80 /* Command/Response bit */
40 #define AX25_EBIT 0x01 /* HDLC Address Extension bit */
41 #define AX25_HBIT 0x80 /* Has been repeated bit */
43 #define AX25_SSSID_SPARE 0x60 /* Unused bits in SSID for standard AX.25 */
44 #define AX25_ESSID_SPARE 0x20 /* Unused bits in SSID for extended AX.25 */
45 #define AX25_DAMA_FLAG 0x20 /* Well, it is *NOT* unused! (dl1bke 951121 */
47 #define AX25_COND_ACK_PENDING 0x01
48 #define AX25_COND_REJECT 0x02
49 #define AX25_COND_PEER_RX_BUSY 0x04
50 #define AX25_COND_OWN_RX_BUSY 0x08
51 #define AX25_COND_DAMA_MODE 0x10
53 #ifndef _LINUX_NETDEVICE_H
54 #include <linux/netdevice.h>
57 /* Upper sub-layer (LAPB) definitions */
59 /* Control field templates */
60 #define AX25_I 0x00 /* Information frames */
61 #define AX25_S 0x01 /* Supervisory frames */
62 #define AX25_RR 0x01 /* Receiver ready */
63 #define AX25_RNR 0x05 /* Receiver not ready */
64 #define AX25_REJ 0x09 /* Reject */
65 #define AX25_U 0x03 /* Unnumbered frames */
66 #define AX25_SABM 0x2f /* Set Asynchronous Balanced Mode */
67 #define AX25_SABME 0x6f /* Set Asynchronous Balanced Mode Extended */
68 #define AX25_DISC 0x43 /* Disconnect */
69 #define AX25_DM 0x0f /* Disconnected mode */
70 #define AX25_UA 0x63 /* Unnumbered acknowledge */
71 #define AX25_FRMR 0x87 /* Frame reject */
72 #define AX25_UI 0x03 /* Unnumbered information */
73 #define AX25_XID 0xaf /* Exchange information */
74 #define AX25_TEST 0xe3 /* Test */
76 #define AX25_PF 0x10 /* Poll/final bit for standard AX.25 */
77 #define AX25_EPF 0x01 /* Poll/final bit for extended AX.25 */
79 #define AX25_ILLEGAL 0x100 /* Impossible to be a real frame type */
81 #define AX25_POLLOFF 0
85 #define AX25_COMMAND 1
86 #define AX25_RESPONSE 2
88 /* Define Link State constants. */
98 #define AX25_MODULUS 8 /* Standard AX.25 modulus */
99 #define AX25_EMODULUS 128 /* Extended AX.25 modulus */
102 AX25_PROTO_STD_SIMPLEX
,
103 AX25_PROTO_STD_DUPLEX
,
104 AX25_PROTO_DAMA_SLAVE
,
105 AX25_PROTO_DAMA_MASTER
109 AX25_VALUES_IPDEFMODE
, /* 0=DG 1=VC */
110 AX25_VALUES_AXDEFMODE
, /* 0=Normal 1=Extended Seq Nos */
111 AX25_VALUES_BACKOFF
, /* 0=None 1=Linear 2=Exponential */
112 AX25_VALUES_CONMODE
, /* Allow connected modes - 0=No 1=no "PID text" 2=all PIDs */
113 AX25_VALUES_WINDOW
, /* Default window size for standard AX.25 */
114 AX25_VALUES_EWINDOW
, /* Default window size for extended AX.25 */
115 AX25_VALUES_T1
, /* Default T1 timeout value */
116 AX25_VALUES_T2
, /* Default T2 timeout value */
117 AX25_VALUES_T3
, /* Default T3 timeout value */
118 AX25_VALUES_IDLE
, /* Connected mode idle timer */
119 AX25_VALUES_N2
, /* Default N2 value */
120 AX25_VALUES_PACLEN
, /* AX.25 MTU */
121 AX25_VALUES_PROTOCOL
, /* Std AX.25, DAMA Slave, DAMA Master */
122 AX25_VALUES_DS_TIMEOUT
, /* DAMA Slave timeout */
123 AX25_MAX_VALUES
/* THIS MUST REMAIN THE LAST ENTRY OF THIS LIST */
126 #define AX25_DEF_IPDEFMODE 0 /* Datagram */
127 #define AX25_DEF_AXDEFMODE 0 /* Normal */
128 #define AX25_DEF_BACKOFF 1 /* Linear backoff */
129 #define AX25_DEF_CONMODE 2 /* Connected mode allowed */
130 #define AX25_DEF_WINDOW 2 /* Window=2 */
131 #define AX25_DEF_EWINDOW 32 /* Module-128 Window=32 */
132 #define AX25_DEF_T1 (10 * HZ) /* T1=10s */
133 #define AX25_DEF_T2 (3 * HZ) /* T2=3s */
134 #define AX25_DEF_T3 (300 * HZ) /* T3=300s */
135 #define AX25_DEF_N2 10 /* N2=10 */
136 #define AX25_DEF_IDLE (0 * 60 * HZ) /* Idle=None */
137 #define AX25_DEF_PACLEN 256 /* Paclen=256 */
138 #define AX25_DEF_PROTOCOL AX25_PROTO_STD_SIMPLEX /* Standard AX.25 */
139 #define AX25_DEF_DS_TIMEOUT (3 * 60 * HZ) /* DAMA timeout 3 minutes */
141 typedef struct ax25_uid_assoc
{
142 struct ax25_uid_assoc
*next
;
148 ax25_address calls
[AX25_MAX_DIGIS
];
149 unsigned char repeated
[AX25_MAX_DIGIS
];
154 typedef struct ax25_route
{
155 struct ax25_route
*next
;
157 ax25_address callsign
;
158 struct net_device
*dev
;
161 struct timer_list timer
;
165 char slave
; /* slave_mode? */
166 struct timer_list slave_timer
; /* timeout timer */
167 unsigned short slave_timeout
; /* when? */
172 typedef struct ax25_dev
{
173 struct ax25_dev
*next
;
174 struct net_device
*dev
;
175 struct net_device
*forward
;
176 struct ctl_table
*systable
;
177 int values
[AX25_MAX_VALUES
];
178 #if defined(CONFIG_AX25_DAMA_SLAVE) || defined(CONFIG_AX25_DAMA_MASTER)
183 typedef struct ax25_cb
{
184 struct hlist_node ax25_node
;
185 ax25_address source_addr
, dest_addr
;
188 unsigned char iamdigi
;
189 unsigned char state
, modulus
, pidincl
;
190 unsigned short vs
, vr
, va
;
191 unsigned char condition
, backoff
;
192 unsigned char n2
, n2count
;
193 struct timer_list t1timer
, t2timer
, t3timer
, idletimer
;
194 unsigned long t1
, t2
, t3
, idle
, rtt
;
195 unsigned short paclen
, fragno
, fraglen
;
196 struct sk_buff_head write_queue
;
197 struct sk_buff_head reseq_queue
;
198 struct sk_buff_head ack_queue
;
199 struct sk_buff_head frag_queue
;
200 unsigned char window
;
201 struct timer_list timer
, dtimer
;
202 struct sock
*sk
; /* Backlink to socket */
206 #define ax25_sk(__sk) ((ax25_cb *)(__sk)->sk_protinfo)
208 #define ax25_for_each(__ax25, node, list) \
209 hlist_for_each_entry(__ax25, node, list, ax25_node)
211 #define ax25_cb_hold(__ax25) \
212 atomic_inc(&((__ax25)->refcount))
214 static __inline__
void ax25_cb_put(ax25_cb
*ax25
)
216 if (atomic_dec_and_test(&ax25
->refcount
)) {
218 kfree(ax25
->digipeat
);
223 static inline __be16
ax25_type_trans(struct sk_buff
*skb
, struct net_device
*dev
)
226 skb
->pkt_type
= PACKET_HOST
;
227 skb
->mac
.raw
= skb
->data
;
228 return htons(ETH_P_AX25
);
232 extern struct hlist_head ax25_list
;
233 extern spinlock_t ax25_list_lock
;
234 extern void ax25_cb_add(ax25_cb
*);
235 struct sock
*ax25_find_listener(ax25_address
*, int, struct net_device
*, int);
236 struct sock
*ax25_get_socket(ax25_address
*, ax25_address
*, int);
237 extern ax25_cb
*ax25_find_cb(ax25_address
*, ax25_address
*, ax25_digi
*, struct net_device
*);
238 extern void ax25_send_to_raw(ax25_address
*, struct sk_buff
*, int);
239 extern void ax25_destroy_socket(ax25_cb
*);
240 extern ax25_cb
*ax25_create_cb(void);
241 extern void ax25_fillin_cb(ax25_cb
*, ax25_dev
*);
242 extern struct sock
*ax25_make_new(struct sock
*, struct ax25_dev
*);
245 extern ax25_address null_ax25_address
;
246 extern char *ax2asc(ax25_address
*);
247 extern ax25_address
*asc2ax(char *);
248 extern int ax25cmp(ax25_address
*, ax25_address
*);
249 extern int ax25digicmp(ax25_digi
*, ax25_digi
*);
250 extern unsigned char *ax25_addr_parse(unsigned char *, int, ax25_address
*, ax25_address
*, ax25_digi
*, int *, int *);
251 extern int ax25_addr_build(unsigned char *, ax25_address
*, ax25_address
*, ax25_digi
*, int, int);
252 extern int ax25_addr_size(ax25_digi
*);
253 extern void ax25_digi_invert(ax25_digi
*, ax25_digi
*);
256 extern ax25_dev
*ax25_dev_list
;
257 extern spinlock_t ax25_dev_lock
;
259 static inline ax25_dev
*ax25_dev_ax25dev(struct net_device
*dev
)
261 return dev
->ax25_ptr
;
264 extern ax25_dev
*ax25_addr_ax25dev(ax25_address
*);
265 extern void ax25_dev_device_up(struct net_device
*);
266 extern void ax25_dev_device_down(struct net_device
*);
267 extern int ax25_fwd_ioctl(unsigned int, struct ax25_fwd_struct
*);
268 extern struct net_device
*ax25_fwd_dev(struct net_device
*);
269 extern void ax25_dev_free(void);
272 extern int ax25_ds_frame_in(ax25_cb
*, struct sk_buff
*, int);
275 extern void ax25_ds_nr_error_recovery(ax25_cb
*);
276 extern void ax25_ds_enquiry_response(ax25_cb
*);
277 extern void ax25_ds_establish_data_link(ax25_cb
*);
278 extern void ax25_dev_dama_off(ax25_dev
*);
279 extern void ax25_dama_on(ax25_cb
*);
280 extern void ax25_dama_off(ax25_cb
*);
282 /* ax25_ds_timer.c */
283 extern void ax25_ds_set_timer(ax25_dev
*);
284 extern void ax25_ds_del_timer(ax25_dev
*);
285 extern void ax25_ds_timer(ax25_cb
*);
286 extern void ax25_ds_t1_timeout(ax25_cb
*);
287 extern void ax25_ds_heartbeat_expiry(ax25_cb
*);
288 extern void ax25_ds_t3timer_expiry(ax25_cb
*);
289 extern void ax25_ds_idletimer_expiry(ax25_cb
*);
292 extern int ax25_protocol_register(unsigned int, int (*)(struct sk_buff
*, ax25_cb
*));
293 extern void ax25_protocol_release(unsigned int);
294 extern int ax25_linkfail_register(void (*)(ax25_cb
*, int));
295 extern void ax25_linkfail_release(void (*)(ax25_cb
*, int));
296 extern int ax25_listen_register(ax25_address
*, struct net_device
*);
297 extern void ax25_listen_release(ax25_address
*, struct net_device
*);
298 extern int (*ax25_protocol_function(unsigned int))(struct sk_buff
*, ax25_cb
*);
299 extern int ax25_listen_mine(ax25_address
*, struct net_device
*);
300 extern void ax25_link_failed(ax25_cb
*, int);
301 extern int ax25_protocol_is_registered(unsigned int);
304 extern int ax25_rx_iframe(ax25_cb
*, struct sk_buff
*);
305 extern int ax25_kiss_rcv(struct sk_buff
*, struct net_device
*, struct packet_type
*);
308 extern int ax25_encapsulate(struct sk_buff
*, struct net_device
*, unsigned short, void *, void *, unsigned int);
309 extern int ax25_rebuild_header(struct sk_buff
*);
312 extern ax25_cb
*ax25_send_frame(struct sk_buff
*, int, ax25_address
*, ax25_address
*, ax25_digi
*, struct net_device
*);
313 extern void ax25_output(ax25_cb
*, int, struct sk_buff
*);
314 extern void ax25_kick(ax25_cb
*);
315 extern void ax25_transmit_buffer(ax25_cb
*, struct sk_buff
*, int);
316 extern void ax25_queue_xmit(struct sk_buff
*skb
, struct net_device
*dev
);
317 extern int ax25_check_iframes_acked(ax25_cb
*, unsigned short);
320 extern void ax25_rt_device_down(struct net_device
*);
321 extern int ax25_rt_ioctl(unsigned int, void __user
*);
322 extern struct file_operations ax25_route_fops
;
323 extern int ax25_rt_autobind(ax25_cb
*, ax25_address
*);
324 extern ax25_route
*ax25_rt_find_route(ax25_route
*, ax25_address
*,
325 struct net_device
*);
326 extern struct sk_buff
*ax25_rt_build_path(struct sk_buff
*, ax25_address
*, ax25_address
*, ax25_digi
*);
327 extern void ax25_rt_free(void);
329 static inline void ax25_put_route(ax25_route
*ax25_rt
)
331 atomic_dec(&ax25_rt
->ref
);
335 extern int ax25_std_frame_in(ax25_cb
*, struct sk_buff
*, int);
337 /* ax25_std_subr.c */
338 extern void ax25_std_nr_error_recovery(ax25_cb
*);
339 extern void ax25_std_establish_data_link(ax25_cb
*);
340 extern void ax25_std_transmit_enquiry(ax25_cb
*);
341 extern void ax25_std_enquiry_response(ax25_cb
*);
342 extern void ax25_std_timeout_response(ax25_cb
*);
344 /* ax25_std_timer.c */
345 extern void ax25_std_heartbeat_expiry(ax25_cb
*);
346 extern void ax25_std_t1timer_expiry(ax25_cb
*);
347 extern void ax25_std_t2timer_expiry(ax25_cb
*);
348 extern void ax25_std_t3timer_expiry(ax25_cb
*);
349 extern void ax25_std_idletimer_expiry(ax25_cb
*);
352 extern void ax25_clear_queues(ax25_cb
*);
353 extern void ax25_frames_acked(ax25_cb
*, unsigned short);
354 extern void ax25_requeue_frames(ax25_cb
*);
355 extern int ax25_validate_nr(ax25_cb
*, unsigned short);
356 extern int ax25_decode(ax25_cb
*, struct sk_buff
*, int *, int *, int *);
357 extern void ax25_send_control(ax25_cb
*, int, int, int);
358 extern void ax25_return_dm(struct net_device
*, ax25_address
*, ax25_address
*, ax25_digi
*);
359 extern void ax25_calculate_t1(ax25_cb
*);
360 extern void ax25_calculate_rtt(ax25_cb
*);
361 extern void ax25_disconnect(ax25_cb
*, int);
364 extern void ax25_start_heartbeat(ax25_cb
*);
365 extern void ax25_start_t1timer(ax25_cb
*);
366 extern void ax25_start_t2timer(ax25_cb
*);
367 extern void ax25_start_t3timer(ax25_cb
*);
368 extern void ax25_start_idletimer(ax25_cb
*);
369 extern void ax25_stop_heartbeat(ax25_cb
*);
370 extern void ax25_stop_t1timer(ax25_cb
*);
371 extern void ax25_stop_t2timer(ax25_cb
*);
372 extern void ax25_stop_t3timer(ax25_cb
*);
373 extern void ax25_stop_idletimer(ax25_cb
*);
374 extern int ax25_t1timer_running(ax25_cb
*);
375 extern unsigned long ax25_display_timer(struct timer_list
*);
378 extern int ax25_uid_policy
;
379 extern ax25_address
*ax25_findbyuid(uid_t
);
380 extern int ax25_uid_ioctl(int, struct sockaddr_ax25
*);
381 extern struct file_operations ax25_uid_fops
;
382 extern void ax25_uid_free(void);
384 /* sysctl_net_ax25.c */
386 extern void ax25_register_sysctl(void);
387 extern void ax25_unregister_sysctl(void);
389 static inline void ax25_register_sysctl(void) {};
390 static inline void ax25_unregister_sysctl(void) {};
391 #endif /* CONFIG_SYSCTL */