1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | /* |
3 | * Declarations of AX.25 type objects. |
4 | * |
5 | * Alan Cox (GW4PTS) 10/11/93 |
6 | */ |
7 | #ifndef _AX25_H |
8 | #define _AX25_H |
9 | |
10 | #include <linux/ax25.h> |
11 | #include <linux/spinlock.h> |
12 | #include <linux/timer.h> |
13 | #include <linux/list.h> |
14 | #include <linux/slab.h> |
15 | #include <linux/refcount.h> |
16 | #include <net/neighbour.h> |
17 | #include <net/sock.h> |
18 | #include <linux/seq_file.h> |
19 | |
20 | #define AX25_T1CLAMPLO 1 |
21 | #define AX25_T1CLAMPHI (30 * HZ) |
22 | |
23 | #define 16 |
24 | #define 1 |
25 | |
26 | #define 17 |
27 | #define AX25_ADDR_LEN 7 |
28 | #define (AX25_MAX_DIGIS * AX25_ADDR_LEN) |
29 | #define (AX25_HEADER_LEN + AX25_DIGI_HEADER_LEN) |
30 | |
31 | /* AX.25 Protocol IDs */ |
32 | #define AX25_P_ROSE 0x01 |
33 | #define AX25_P_VJCOMP 0x06 /* Compressed TCP/IP packet */ |
34 | /* Van Jacobsen (RFC 1144) */ |
35 | #define AX25_P_VJUNCOMP 0x07 /* Uncompressed TCP/IP packet */ |
36 | /* Van Jacobsen (RFC 1144) */ |
37 | #define AX25_P_SEGMENT 0x08 /* Segmentation fragment */ |
38 | #define AX25_P_TEXNET 0xc3 /* TEXTNET datagram protocol */ |
39 | #define AX25_P_LQ 0xc4 /* Link Quality Protocol */ |
40 | #define AX25_P_ATALK 0xca /* Appletalk */ |
41 | #define AX25_P_ATALK_ARP 0xcb /* Appletalk ARP */ |
42 | #define AX25_P_IP 0xcc /* ARPA Internet Protocol */ |
43 | #define AX25_P_ARP 0xcd /* ARPA Address Resolution */ |
44 | #define AX25_P_FLEXNET 0xce /* FlexNet */ |
45 | #define AX25_P_NETROM 0xcf /* NET/ROM */ |
46 | #define AX25_P_TEXT 0xF0 /* No layer 3 protocol impl. */ |
47 | |
48 | /* AX.25 Segment control values */ |
49 | #define AX25_SEG_REM 0x7F |
50 | #define AX25_SEG_FIRST 0x80 |
51 | |
52 | #define AX25_CBIT 0x80 /* Command/Response bit */ |
53 | #define AX25_EBIT 0x01 /* HDLC Address Extension bit */ |
54 | #define AX25_HBIT 0x80 /* Has been repeated bit */ |
55 | |
56 | #define AX25_SSSID_SPARE 0x60 /* Unused bits in SSID for standard AX.25 */ |
57 | #define AX25_ESSID_SPARE 0x20 /* Unused bits in SSID for extended AX.25 */ |
58 | #define AX25_DAMA_FLAG 0x20 /* Well, it is *NOT* unused! (dl1bke 951121 */ |
59 | |
60 | #define AX25_COND_ACK_PENDING 0x01 |
61 | #define AX25_COND_REJECT 0x02 |
62 | #define AX25_COND_PEER_RX_BUSY 0x04 |
63 | #define AX25_COND_OWN_RX_BUSY 0x08 |
64 | #define AX25_COND_DAMA_MODE 0x10 |
65 | |
66 | #ifndef _LINUX_NETDEVICE_H |
67 | #include <linux/netdevice.h> |
68 | #endif |
69 | |
70 | /* Upper sub-layer (LAPB) definitions */ |
71 | |
72 | /* Control field templates */ |
73 | #define AX25_I 0x00 /* Information frames */ |
74 | #define AX25_S 0x01 /* Supervisory frames */ |
75 | #define AX25_RR 0x01 /* Receiver ready */ |
76 | #define AX25_RNR 0x05 /* Receiver not ready */ |
77 | #define AX25_REJ 0x09 /* Reject */ |
78 | #define AX25_U 0x03 /* Unnumbered frames */ |
79 | #define AX25_SABM 0x2f /* Set Asynchronous Balanced Mode */ |
80 | #define AX25_SABME 0x6f /* Set Asynchronous Balanced Mode Extended */ |
81 | #define AX25_DISC 0x43 /* Disconnect */ |
82 | #define AX25_DM 0x0f /* Disconnected mode */ |
83 | #define AX25_UA 0x63 /* Unnumbered acknowledge */ |
84 | #define AX25_FRMR 0x87 /* Frame reject */ |
85 | #define AX25_UI 0x03 /* Unnumbered information */ |
86 | #define AX25_XID 0xaf /* Exchange information */ |
87 | #define AX25_TEST 0xe3 /* Test */ |
88 | |
89 | #define AX25_PF 0x10 /* Poll/final bit for standard AX.25 */ |
90 | #define AX25_EPF 0x01 /* Poll/final bit for extended AX.25 */ |
91 | |
92 | #define AX25_ILLEGAL 0x100 /* Impossible to be a real frame type */ |
93 | |
94 | #define AX25_POLLOFF 0 |
95 | #define AX25_POLLON 1 |
96 | |
97 | /* AX25 L2 C-bit */ |
98 | #define AX25_COMMAND 1 |
99 | #define AX25_RESPONSE 2 |
100 | |
101 | /* Define Link State constants. */ |
102 | |
103 | enum { |
104 | AX25_STATE_0, /* Listening */ |
105 | AX25_STATE_1, /* SABM sent */ |
106 | AX25_STATE_2, /* DISC sent */ |
107 | AX25_STATE_3, /* Established */ |
108 | AX25_STATE_4 /* Recovery */ |
109 | }; |
110 | |
111 | #define AX25_MODULUS 8 /* Standard AX.25 modulus */ |
112 | #define AX25_EMODULUS 128 /* Extended AX.25 modulus */ |
113 | |
114 | enum { |
115 | AX25_PROTO_STD_SIMPLEX, |
116 | AX25_PROTO_STD_DUPLEX, |
117 | #ifdef CONFIG_AX25_DAMA_SLAVE |
118 | AX25_PROTO_DAMA_SLAVE, |
119 | #ifdef CONFIG_AX25_DAMA_MASTER |
120 | AX25_PROTO_DAMA_MASTER, |
121 | #define AX25_PROTO_MAX AX25_PROTO_DAMA_MASTER |
122 | #endif |
123 | #endif |
124 | __AX25_PROTO_MAX, |
125 | AX25_PROTO_MAX = __AX25_PROTO_MAX -1 |
126 | }; |
127 | |
128 | enum { |
129 | AX25_VALUES_IPDEFMODE, /* 0=DG 1=VC */ |
130 | AX25_VALUES_AXDEFMODE, /* 0=Normal 1=Extended Seq Nos */ |
131 | AX25_VALUES_BACKOFF, /* 0=None 1=Linear 2=Exponential */ |
132 | AX25_VALUES_CONMODE, /* Allow connected modes - 0=No 1=no "PID text" 2=all PIDs */ |
133 | AX25_VALUES_WINDOW, /* Default window size for standard AX.25 */ |
134 | AX25_VALUES_EWINDOW, /* Default window size for extended AX.25 */ |
135 | AX25_VALUES_T1, /* Default T1 timeout value */ |
136 | AX25_VALUES_T2, /* Default T2 timeout value */ |
137 | AX25_VALUES_T3, /* Default T3 timeout value */ |
138 | AX25_VALUES_IDLE, /* Connected mode idle timer */ |
139 | AX25_VALUES_N2, /* Default N2 value */ |
140 | AX25_VALUES_PACLEN, /* AX.25 MTU */ |
141 | AX25_VALUES_PROTOCOL, /* Std AX.25, DAMA Slave, DAMA Master */ |
142 | AX25_VALUES_DS_TIMEOUT, /* DAMA Slave timeout */ |
143 | AX25_MAX_VALUES /* THIS MUST REMAIN THE LAST ENTRY OF THIS LIST */ |
144 | }; |
145 | |
146 | #define AX25_DEF_IPDEFMODE 0 /* Datagram */ |
147 | #define AX25_DEF_AXDEFMODE 0 /* Normal */ |
148 | #define AX25_DEF_BACKOFF 1 /* Linear backoff */ |
149 | #define AX25_DEF_CONMODE 2 /* Connected mode allowed */ |
150 | #define AX25_DEF_WINDOW 2 /* Window=2 */ |
151 | #define AX25_DEF_EWINDOW 32 /* Module-128 Window=32 */ |
152 | #define AX25_DEF_T1 10000 /* T1=10s */ |
153 | #define AX25_DEF_T2 3000 /* T2=3s */ |
154 | #define AX25_DEF_T3 300000 /* T3=300s */ |
155 | #define AX25_DEF_N2 10 /* N2=10 */ |
156 | #define AX25_DEF_IDLE 0 /* Idle=None */ |
157 | #define AX25_DEF_PACLEN 256 /* Paclen=256 */ |
158 | #define AX25_DEF_PROTOCOL AX25_PROTO_STD_SIMPLEX /* Standard AX.25 */ |
159 | #define AX25_DEF_DS_TIMEOUT 180000 /* DAMA timeout 3 minutes */ |
160 | |
161 | typedef struct ax25_uid_assoc { |
162 | struct hlist_node uid_node; |
163 | refcount_t refcount; |
164 | kuid_t uid; |
165 | ax25_address call; |
166 | } ax25_uid_assoc; |
167 | |
168 | #define ax25_uid_for_each(__ax25, list) \ |
169 | hlist_for_each_entry(__ax25, list, uid_node) |
170 | |
171 | #define ax25_uid_hold(ax25) \ |
172 | refcount_inc(&((ax25)->refcount)) |
173 | |
174 | static inline void ax25_uid_put(ax25_uid_assoc *assoc) |
175 | { |
176 | if (refcount_dec_and_test(r: &assoc->refcount)) { |
177 | kfree(objp: assoc); |
178 | } |
179 | } |
180 | |
181 | typedef struct { |
182 | ax25_address calls[AX25_MAX_DIGIS]; |
183 | unsigned char repeated[AX25_MAX_DIGIS]; |
184 | unsigned char ndigi; |
185 | signed char lastrepeat; |
186 | } ax25_digi; |
187 | |
188 | typedef struct ax25_route { |
189 | struct ax25_route *next; |
190 | ax25_address callsign; |
191 | struct net_device *dev; |
192 | ax25_digi *digipeat; |
193 | char ip_mode; |
194 | } ax25_route; |
195 | |
196 | void __ax25_put_route(ax25_route *ax25_rt); |
197 | |
198 | extern rwlock_t ax25_route_lock; |
199 | |
200 | static inline void ax25_route_lock_use(void) |
201 | { |
202 | read_lock(&ax25_route_lock); |
203 | } |
204 | |
205 | static inline void ax25_route_lock_unuse(void) |
206 | { |
207 | read_unlock(&ax25_route_lock); |
208 | } |
209 | |
210 | typedef struct { |
211 | char slave; /* slave_mode? */ |
212 | struct timer_list slave_timer; /* timeout timer */ |
213 | unsigned short slave_timeout; /* when? */ |
214 | } ax25_dama_info; |
215 | |
216 | struct ctl_table; |
217 | |
218 | typedef struct ax25_dev { |
219 | struct ax25_dev *next; |
220 | |
221 | struct net_device *dev; |
222 | netdevice_tracker dev_tracker; |
223 | |
224 | struct net_device *forward; |
225 | struct ctl_table_header *; |
226 | int values[AX25_MAX_VALUES]; |
227 | #if defined(CONFIG_AX25_DAMA_SLAVE) || defined(CONFIG_AX25_DAMA_MASTER) |
228 | ax25_dama_info dama; |
229 | #endif |
230 | refcount_t refcount; |
231 | bool device_up; |
232 | } ax25_dev; |
233 | |
234 | typedef struct ax25_cb { |
235 | struct hlist_node ax25_node; |
236 | ax25_address source_addr, dest_addr; |
237 | ax25_digi *digipeat; |
238 | ax25_dev *ax25_dev; |
239 | netdevice_tracker dev_tracker; |
240 | unsigned char iamdigi; |
241 | unsigned char state, modulus, pidincl; |
242 | unsigned short vs, vr, va; |
243 | unsigned char condition, backoff; |
244 | unsigned char n2, n2count; |
245 | struct timer_list t1timer, t2timer, t3timer, idletimer; |
246 | unsigned long t1, t2, t3, idle, rtt; |
247 | unsigned short paclen, fragno, fraglen; |
248 | struct sk_buff_head write_queue; |
249 | struct sk_buff_head reseq_queue; |
250 | struct sk_buff_head ack_queue; |
251 | struct sk_buff_head frag_queue; |
252 | unsigned char window; |
253 | struct timer_list timer, dtimer; |
254 | struct sock *sk; /* Backlink to socket */ |
255 | refcount_t refcount; |
256 | } ax25_cb; |
257 | |
258 | struct ax25_sock { |
259 | struct sock sk; |
260 | struct ax25_cb *cb; |
261 | }; |
262 | |
263 | #define ax25_sk(ptr) container_of_const(ptr, struct ax25_sock, sk) |
264 | |
265 | static inline struct ax25_cb *sk_to_ax25(const struct sock *sk) |
266 | { |
267 | return ax25_sk(sk)->cb; |
268 | } |
269 | |
270 | #define ax25_for_each(__ax25, list) \ |
271 | hlist_for_each_entry(__ax25, list, ax25_node) |
272 | |
273 | #define ax25_cb_hold(__ax25) \ |
274 | refcount_inc(&((__ax25)->refcount)) |
275 | |
276 | static __inline__ void ax25_cb_put(ax25_cb *ax25) |
277 | { |
278 | if (refcount_dec_and_test(r: &ax25->refcount)) { |
279 | kfree(objp: ax25->digipeat); |
280 | kfree(objp: ax25); |
281 | } |
282 | } |
283 | |
284 | static inline void ax25_dev_hold(ax25_dev *ax25_dev) |
285 | { |
286 | refcount_inc(r: &ax25_dev->refcount); |
287 | } |
288 | |
289 | static inline void ax25_dev_put(ax25_dev *ax25_dev) |
290 | { |
291 | if (refcount_dec_and_test(r: &ax25_dev->refcount)) { |
292 | kfree(objp: ax25_dev); |
293 | } |
294 | } |
295 | static inline __be16 ax25_type_trans(struct sk_buff *skb, struct net_device *dev) |
296 | { |
297 | skb->dev = dev; |
298 | skb_reset_mac_header(skb); |
299 | skb->pkt_type = PACKET_HOST; |
300 | return htons(ETH_P_AX25); |
301 | } |
302 | |
303 | /* af_ax25.c */ |
304 | extern struct hlist_head ax25_list; |
305 | extern spinlock_t ax25_list_lock; |
306 | void ax25_cb_add(ax25_cb *); |
307 | struct sock *ax25_find_listener(ax25_address *, int, struct net_device *, int); |
308 | struct sock *ax25_get_socket(ax25_address *, ax25_address *, int); |
309 | ax25_cb *ax25_find_cb(const ax25_address *, ax25_address *, ax25_digi *, |
310 | struct net_device *); |
311 | void ax25_send_to_raw(ax25_address *, struct sk_buff *, int); |
312 | void ax25_destroy_socket(ax25_cb *); |
313 | ax25_cb * __must_check ax25_create_cb(void); |
314 | void ax25_fillin_cb(ax25_cb *, ax25_dev *); |
315 | struct sock *ax25_make_new(struct sock *, struct ax25_dev *); |
316 | |
317 | /* ax25_addr.c */ |
318 | extern const ax25_address ax25_bcast; |
319 | extern const ax25_address ax25_defaddr; |
320 | extern const ax25_address null_ax25_address; |
321 | char *ax2asc(char *buf, const ax25_address *); |
322 | void asc2ax(ax25_address *addr, const char *callsign); |
323 | int ax25cmp(const ax25_address *, const ax25_address *); |
324 | int ax25digicmp(const ax25_digi *, const ax25_digi *); |
325 | const unsigned char *ax25_addr_parse(const unsigned char *, int, |
326 | ax25_address *, ax25_address *, ax25_digi *, int *, int *); |
327 | int ax25_addr_build(unsigned char *, const ax25_address *, |
328 | const ax25_address *, const ax25_digi *, int, int); |
329 | int ax25_addr_size(const ax25_digi *); |
330 | void ax25_digi_invert(const ax25_digi *, ax25_digi *); |
331 | |
332 | /* ax25_dev.c */ |
333 | extern ax25_dev *ax25_dev_list; |
334 | extern spinlock_t ax25_dev_lock; |
335 | |
336 | #if IS_ENABLED(CONFIG_AX25) |
337 | static inline ax25_dev *ax25_dev_ax25dev(struct net_device *dev) |
338 | { |
339 | return dev->ax25_ptr; |
340 | } |
341 | #endif |
342 | |
343 | ax25_dev *ax25_addr_ax25dev(ax25_address *); |
344 | void ax25_dev_device_up(struct net_device *); |
345 | void ax25_dev_device_down(struct net_device *); |
346 | int ax25_fwd_ioctl(unsigned int, struct ax25_fwd_struct *); |
347 | struct net_device *ax25_fwd_dev(struct net_device *); |
348 | void ax25_dev_free(void); |
349 | |
350 | /* ax25_ds_in.c */ |
351 | int ax25_ds_frame_in(ax25_cb *, struct sk_buff *, int); |
352 | |
353 | /* ax25_ds_subr.c */ |
354 | void ax25_ds_nr_error_recovery(ax25_cb *); |
355 | void ax25_ds_enquiry_response(ax25_cb *); |
356 | void ax25_ds_establish_data_link(ax25_cb *); |
357 | void ax25_dev_dama_off(ax25_dev *); |
358 | void ax25_dama_on(ax25_cb *); |
359 | void ax25_dama_off(ax25_cb *); |
360 | |
361 | /* ax25_ds_timer.c */ |
362 | void ax25_ds_setup_timer(ax25_dev *); |
363 | void ax25_ds_set_timer(ax25_dev *); |
364 | void ax25_ds_del_timer(ax25_dev *); |
365 | void ax25_ds_timer(ax25_cb *); |
366 | void ax25_ds_t1_timeout(ax25_cb *); |
367 | void ax25_ds_heartbeat_expiry(ax25_cb *); |
368 | void ax25_ds_t3timer_expiry(ax25_cb *); |
369 | void ax25_ds_idletimer_expiry(ax25_cb *); |
370 | |
371 | /* ax25_iface.c */ |
372 | |
373 | struct ax25_protocol { |
374 | struct ax25_protocol *next; |
375 | unsigned int pid; |
376 | int (*func)(struct sk_buff *, ax25_cb *); |
377 | }; |
378 | |
379 | void ax25_register_pid(struct ax25_protocol *ap); |
380 | void ax25_protocol_release(unsigned int); |
381 | |
382 | struct ax25_linkfail { |
383 | struct hlist_node lf_node; |
384 | void (*func)(ax25_cb *, int); |
385 | }; |
386 | |
387 | void ax25_linkfail_register(struct ax25_linkfail *lf); |
388 | void ax25_linkfail_release(struct ax25_linkfail *lf); |
389 | int __must_check ax25_listen_register(const ax25_address *, |
390 | struct net_device *); |
391 | void ax25_listen_release(const ax25_address *, struct net_device *); |
392 | int(*ax25_protocol_function(unsigned int))(struct sk_buff *, ax25_cb *); |
393 | int ax25_listen_mine(const ax25_address *, struct net_device *); |
394 | void ax25_link_failed(ax25_cb *, int); |
395 | int ax25_protocol_is_registered(unsigned int); |
396 | |
397 | /* ax25_in.c */ |
398 | int ax25_rx_iframe(ax25_cb *, struct sk_buff *); |
399 | int ax25_kiss_rcv(struct sk_buff *, struct net_device *, struct packet_type *, |
400 | struct net_device *); |
401 | |
402 | /* ax25_ip.c */ |
403 | netdev_tx_t ax25_ip_xmit(struct sk_buff *skb); |
404 | extern const struct header_ops ; |
405 | |
406 | /* ax25_out.c */ |
407 | ax25_cb *ax25_send_frame(struct sk_buff *, int, const ax25_address *, |
408 | ax25_address *, ax25_digi *, struct net_device *); |
409 | void ax25_output(ax25_cb *, int, struct sk_buff *); |
410 | void ax25_kick(ax25_cb *); |
411 | void ax25_transmit_buffer(ax25_cb *, struct sk_buff *, int); |
412 | void ax25_queue_xmit(struct sk_buff *skb, struct net_device *dev); |
413 | int ax25_check_iframes_acked(ax25_cb *, unsigned short); |
414 | |
415 | /* ax25_route.c */ |
416 | void ax25_rt_device_down(struct net_device *); |
417 | int ax25_rt_ioctl(unsigned int, void __user *); |
418 | extern const struct seq_operations ax25_rt_seqops; |
419 | ax25_route *ax25_get_route(ax25_address *addr, struct net_device *dev); |
420 | int ax25_rt_autobind(ax25_cb *, ax25_address *); |
421 | struct sk_buff *ax25_rt_build_path(struct sk_buff *, ax25_address *, |
422 | ax25_address *, ax25_digi *); |
423 | void ax25_rt_free(void); |
424 | |
425 | /* ax25_std_in.c */ |
426 | int ax25_std_frame_in(ax25_cb *, struct sk_buff *, int); |
427 | |
428 | /* ax25_std_subr.c */ |
429 | void ax25_std_nr_error_recovery(ax25_cb *); |
430 | void ax25_std_establish_data_link(ax25_cb *); |
431 | void ax25_std_transmit_enquiry(ax25_cb *); |
432 | void ax25_std_enquiry_response(ax25_cb *); |
433 | void ax25_std_timeout_response(ax25_cb *); |
434 | |
435 | /* ax25_std_timer.c */ |
436 | void ax25_std_heartbeat_expiry(ax25_cb *); |
437 | void ax25_std_t1timer_expiry(ax25_cb *); |
438 | void ax25_std_t2timer_expiry(ax25_cb *); |
439 | void ax25_std_t3timer_expiry(ax25_cb *); |
440 | void ax25_std_idletimer_expiry(ax25_cb *); |
441 | |
442 | /* ax25_subr.c */ |
443 | void ax25_clear_queues(ax25_cb *); |
444 | void ax25_frames_acked(ax25_cb *, unsigned short); |
445 | void ax25_requeue_frames(ax25_cb *); |
446 | int ax25_validate_nr(ax25_cb *, unsigned short); |
447 | int ax25_decode(ax25_cb *, struct sk_buff *, int *, int *, int *); |
448 | void ax25_send_control(ax25_cb *, int, int, int); |
449 | void ax25_return_dm(struct net_device *, ax25_address *, ax25_address *, |
450 | ax25_digi *); |
451 | void ax25_calculate_t1(ax25_cb *); |
452 | void ax25_calculate_rtt(ax25_cb *); |
453 | void ax25_disconnect(ax25_cb *, int); |
454 | |
455 | /* ax25_timer.c */ |
456 | void ax25_setup_timers(ax25_cb *); |
457 | void ax25_start_heartbeat(ax25_cb *); |
458 | void ax25_start_t1timer(ax25_cb *); |
459 | void ax25_start_t2timer(ax25_cb *); |
460 | void ax25_start_t3timer(ax25_cb *); |
461 | void ax25_start_idletimer(ax25_cb *); |
462 | void ax25_stop_heartbeat(ax25_cb *); |
463 | void ax25_stop_t1timer(ax25_cb *); |
464 | void ax25_stop_t2timer(ax25_cb *); |
465 | void ax25_stop_t3timer(ax25_cb *); |
466 | void ax25_stop_idletimer(ax25_cb *); |
467 | int ax25_t1timer_running(ax25_cb *); |
468 | unsigned long ax25_display_timer(struct timer_list *); |
469 | |
470 | /* ax25_uid.c */ |
471 | extern int ax25_uid_policy; |
472 | ax25_uid_assoc *ax25_findbyuid(kuid_t); |
473 | int __must_check ax25_uid_ioctl(int, struct sockaddr_ax25 *); |
474 | extern const struct seq_operations ax25_uid_seqops; |
475 | void ax25_uid_free(void); |
476 | |
477 | /* sysctl_net_ax25.c */ |
478 | #ifdef CONFIG_SYSCTL |
479 | int ax25_register_dev_sysctl(ax25_dev *ax25_dev); |
480 | void ax25_unregister_dev_sysctl(ax25_dev *ax25_dev); |
481 | #else |
482 | static inline int ax25_register_dev_sysctl(ax25_dev *ax25_dev) { return 0; } |
483 | static inline void ax25_unregister_dev_sysctl(ax25_dev *ax25_dev) {} |
484 | #endif /* CONFIG_SYSCTL */ |
485 | |
486 | #endif |
487 | |