Lines Matching defs:lapb
33 #include <net/lapb.h>
39 static void lapb_state0_machine(struct lapb_cb *lapb, struct sk_buff *skb,
44 lapb_dbg(1, "(%p) S0 RX SABM(%d)\n", lapb->dev, frame->pf);
45 if (lapb->mode & LAPB_EXTENDED) {
47 lapb->dev, frame->pf);
48 lapb_send_control(lapb, LAPB_DM, frame->pf,
52 lapb->dev, frame->pf);
53 lapb_dbg(0, "(%p) S0 -> S3\n", lapb->dev);
54 lapb_send_control(lapb, LAPB_UA, frame->pf,
56 lapb_stop_t1timer(lapb);
57 lapb_stop_t2timer(lapb);
58 lapb->state = LAPB_STATE_3;
59 lapb->condition = 0x00;
60 lapb->n2count = 0;
61 lapb->vs = 0;
62 lapb->vr = 0;
63 lapb->va = 0;
64 lapb_connect_indication(lapb, LAPB_OK);
69 lapb_dbg(1, "(%p) S0 RX SABME(%d)\n", lapb->dev, frame->pf);
70 if (lapb->mode & LAPB_EXTENDED) {
72 lapb->dev, frame->pf);
73 lapb_dbg(0, "(%p) S0 -> S3\n", lapb->dev);
74 lapb_send_control(lapb, LAPB_UA, frame->pf,
76 lapb_stop_t1timer(lapb);
77 lapb_stop_t2timer(lapb);
78 lapb->state = LAPB_STATE_3;
79 lapb->condition = 0x00;
80 lapb->n2count = 0;
81 lapb->vs = 0;
82 lapb->vr = 0;
83 lapb->va = 0;
84 lapb_connect_indication(lapb, LAPB_OK);
87 lapb->dev, frame->pf);
88 lapb_send_control(lapb, LAPB_DM, frame->pf,
94 lapb_dbg(1, "(%p) S0 RX DISC(%d)\n", lapb->dev, frame->pf);
95 lapb_dbg(1, "(%p) S0 TX UA(%d)\n", lapb->dev, frame->pf);
96 lapb_send_control(lapb, LAPB_UA, frame->pf, LAPB_RESPONSE);
110 static void lapb_state1_machine(struct lapb_cb *lapb, struct sk_buff *skb,
115 lapb_dbg(1, "(%p) S1 RX SABM(%d)\n", lapb->dev, frame->pf);
116 if (lapb->mode & LAPB_EXTENDED) {
118 lapb->dev, frame->pf);
119 lapb_send_control(lapb, LAPB_DM, frame->pf,
123 lapb->dev, frame->pf);
124 lapb_send_control(lapb, LAPB_UA, frame->pf,
130 lapb_dbg(1, "(%p) S1 RX SABME(%d)\n", lapb->dev, frame->pf);
131 if (lapb->mode & LAPB_EXTENDED) {
133 lapb->dev, frame->pf);
134 lapb_send_control(lapb, LAPB_UA, frame->pf,
138 lapb->dev, frame->pf);
139 lapb_send_control(lapb, LAPB_DM, frame->pf,
145 lapb_dbg(1, "(%p) S1 RX DISC(%d)\n", lapb->dev, frame->pf);
146 lapb_dbg(1, "(%p) S1 TX DM(%d)\n", lapb->dev, frame->pf);
147 lapb_send_control(lapb, LAPB_DM, frame->pf, LAPB_RESPONSE);
151 lapb_dbg(1, "(%p) S1 RX UA(%d)\n", lapb->dev, frame->pf);
153 lapb_dbg(0, "(%p) S1 -> S3\n", lapb->dev);
154 lapb_stop_t1timer(lapb);
155 lapb_stop_t2timer(lapb);
156 lapb->state = LAPB_STATE_3;
157 lapb->condition = 0x00;
158 lapb->n2count = 0;
159 lapb->vs = 0;
160 lapb->vr = 0;
161 lapb->va = 0;
162 lapb_connect_confirmation(lapb, LAPB_OK);
167 lapb_dbg(1, "(%p) S1 RX DM(%d)\n", lapb->dev, frame->pf);
169 lapb_dbg(0, "(%p) S1 -> S0\n", lapb->dev);
170 lapb_clear_queues(lapb);
171 lapb->state = LAPB_STATE_0;
172 lapb_start_t1timer(lapb);
173 lapb_stop_t2timer(lapb);
174 lapb_disconnect_indication(lapb, LAPB_REFUSED);
186 static void lapb_state2_machine(struct lapb_cb *lapb, struct sk_buff *skb,
193 lapb->dev, frame->pf);
194 lapb_dbg(1, "(%p) S2 TX DM(%d)\n", lapb->dev, frame->pf);
195 lapb_send_control(lapb, LAPB_DM, frame->pf, LAPB_RESPONSE);
199 lapb_dbg(1, "(%p) S2 RX DISC(%d)\n", lapb->dev, frame->pf);
200 lapb_dbg(1, "(%p) S2 TX UA(%d)\n", lapb->dev, frame->pf);
201 lapb_send_control(lapb, LAPB_UA, frame->pf, LAPB_RESPONSE);
205 lapb_dbg(1, "(%p) S2 RX UA(%d)\n", lapb->dev, frame->pf);
207 lapb_dbg(0, "(%p) S2 -> S0\n", lapb->dev);
208 lapb->state = LAPB_STATE_0;
209 lapb_start_t1timer(lapb);
210 lapb_stop_t2timer(lapb);
211 lapb_disconnect_confirmation(lapb, LAPB_OK);
216 lapb_dbg(1, "(%p) S2 RX DM(%d)\n", lapb->dev, frame->pf);
218 lapb_dbg(0, "(%p) S2 -> S0\n", lapb->dev);
219 lapb->state = LAPB_STATE_0;
220 lapb_start_t1timer(lapb);
221 lapb_stop_t2timer(lapb);
222 lapb_disconnect_confirmation(lapb, LAPB_NOTCONNECTED);
231 lapb->dev, frame->pf);
232 lapb_dbg(1, "(%p) S2 RX DM(%d)\n", lapb->dev, frame->pf);
234 lapb_send_control(lapb, LAPB_DM, frame->pf,
246 static void lapb_state3_machine(struct lapb_cb *lapb, struct sk_buff *skb,
250 int modulus = (lapb->mode & LAPB_EXTENDED) ? LAPB_EMODULUS :
255 lapb_dbg(1, "(%p) S3 RX SABM(%d)\n", lapb->dev, frame->pf);
256 if (lapb->mode & LAPB_EXTENDED) {
258 lapb->dev, frame->pf);
259 lapb_send_control(lapb, LAPB_DM, frame->pf,
263 lapb->dev, frame->pf);
264 lapb_send_control(lapb, LAPB_UA, frame->pf,
266 lapb_stop_t1timer(lapb);
267 lapb_stop_t2timer(lapb);
268 lapb->condition = 0x00;
269 lapb->n2count = 0;
270 lapb->vs = 0;
271 lapb->vr = 0;
272 lapb->va = 0;
273 lapb_requeue_frames(lapb);
278 lapb_dbg(1, "(%p) S3 RX SABME(%d)\n", lapb->dev, frame->pf);
279 if (lapb->mode & LAPB_EXTENDED) {
281 lapb->dev, frame->pf);
282 lapb_send_control(lapb, LAPB_UA, frame->pf,
284 lapb_stop_t1timer(lapb);
285 lapb_stop_t2timer(lapb);
286 lapb->condition = 0x00;
287 lapb->n2count = 0;
288 lapb->vs = 0;
289 lapb->vr = 0;
290 lapb->va = 0;
291 lapb_requeue_frames(lapb);
294 lapb->dev, frame->pf);
295 lapb_send_control(lapb, LAPB_DM, frame->pf,
301 lapb_dbg(1, "(%p) S3 RX DISC(%d)\n", lapb->dev, frame->pf);
302 lapb_dbg(0, "(%p) S3 -> S0\n", lapb->dev);
303 lapb_clear_queues(lapb);
304 lapb_send_control(lapb, LAPB_UA, frame->pf, LAPB_RESPONSE);
305 lapb_start_t1timer(lapb);
306 lapb_stop_t2timer(lapb);
307 lapb->state = LAPB_STATE_0;
308 lapb_disconnect_indication(lapb, LAPB_OK);
312 lapb_dbg(1, "(%p) S3 RX DM(%d)\n", lapb->dev, frame->pf);
313 lapb_dbg(0, "(%p) S3 -> S0\n", lapb->dev);
314 lapb_clear_queues(lapb);
315 lapb->state = LAPB_STATE_0;
316 lapb_start_t1timer(lapb);
317 lapb_stop_t2timer(lapb);
318 lapb_disconnect_indication(lapb, LAPB_NOTCONNECTED);
323 lapb->dev, frame->pf, frame->nr);
324 lapb->condition |= LAPB_PEER_RX_BUSY_CONDITION;
325 lapb_check_need_response(lapb, frame->cr, frame->pf);
326 if (lapb_validate_nr(lapb, frame->nr)) {
327 lapb_check_iframes_acked(lapb, frame->nr);
329 lapb->frmr_data = *frame;
330 lapb->frmr_type = LAPB_FRMR_Z;
331 lapb_transmit_frmr(lapb);
332 lapb_dbg(0, "(%p) S3 -> S4\n", lapb->dev);
333 lapb_start_t1timer(lapb);
334 lapb_stop_t2timer(lapb);
335 lapb->state = LAPB_STATE_4;
336 lapb->n2count = 0;
342 lapb->dev, frame->pf, frame->nr);
343 lapb->condition &= ~LAPB_PEER_RX_BUSY_CONDITION;
344 lapb_check_need_response(lapb, frame->cr, frame->pf);
345 if (lapb_validate_nr(lapb, frame->nr)) {
346 lapb_check_iframes_acked(lapb, frame->nr);
348 lapb->frmr_data = *frame;
349 lapb->frmr_type = LAPB_FRMR_Z;
350 lapb_transmit_frmr(lapb);
351 lapb_dbg(0, "(%p) S3 -> S4\n", lapb->dev);
352 lapb_start_t1timer(lapb);
353 lapb_stop_t2timer(lapb);
354 lapb->state = LAPB_STATE_4;
355 lapb->n2count = 0;
361 lapb->dev, frame->pf, frame->nr);
362 lapb->condition &= ~LAPB_PEER_RX_BUSY_CONDITION;
363 lapb_check_need_response(lapb, frame->cr, frame->pf);
364 if (lapb_validate_nr(lapb, frame->nr)) {
365 lapb_frames_acked(lapb, frame->nr);
366 lapb_stop_t1timer(lapb);
367 lapb->n2count = 0;
368 lapb_requeue_frames(lapb);
370 lapb->frmr_data = *frame;
371 lapb->frmr_type = LAPB_FRMR_Z;
372 lapb_transmit_frmr(lapb);
373 lapb_dbg(0, "(%p) S3 -> S4\n", lapb->dev);
374 lapb_start_t1timer(lapb);
375 lapb_stop_t2timer(lapb);
376 lapb->state = LAPB_STATE_4;
377 lapb->n2count = 0;
383 lapb->dev, frame->pf, frame->ns, frame->nr);
384 if (!lapb_validate_nr(lapb, frame->nr)) {
385 lapb->frmr_data = *frame;
386 lapb->frmr_type = LAPB_FRMR_Z;
387 lapb_transmit_frmr(lapb);
388 lapb_dbg(0, "(%p) S3 -> S4\n", lapb->dev);
389 lapb_start_t1timer(lapb);
390 lapb_stop_t2timer(lapb);
391 lapb->state = LAPB_STATE_4;
392 lapb->n2count = 0;
395 if (lapb->condition & LAPB_PEER_RX_BUSY_CONDITION)
396 lapb_frames_acked(lapb, frame->nr);
398 lapb_check_iframes_acked(lapb, frame->nr);
400 if (frame->ns == lapb->vr) {
402 cn = lapb_data_indication(lapb, skb);
415 lapb->vr = (lapb->vr + 1) % modulus;
416 lapb->condition &= ~LAPB_REJECT_CONDITION;
418 lapb_enquiry_response(lapb);
420 if (!(lapb->condition &
422 lapb->condition |= LAPB_ACK_PENDING_CONDITION;
423 lapb_start_t2timer(lapb);
427 if (lapb->condition & LAPB_REJECT_CONDITION) {
429 lapb_enquiry_response(lapb);
432 lapb->dev, frame->pf, lapb->vr);
433 lapb->condition |= LAPB_REJECT_CONDITION;
434 lapb_send_control(lapb, LAPB_REJ, frame->pf,
436 lapb->condition &= ~LAPB_ACK_PENDING_CONDITION;
443 lapb->dev, frame->pf,
445 lapb_establish_data_link(lapb);
446 lapb_dbg(0, "(%p) S3 -> S1\n", lapb->dev);
447 lapb_requeue_frames(lapb);
448 lapb->state = LAPB_STATE_1;
452 lapb_dbg(1, "(%p) S3 RX ILLEGAL(%d)\n", lapb->dev, frame->pf);
453 lapb->frmr_data = *frame;
454 lapb->frmr_type = LAPB_FRMR_W;
455 lapb_transmit_frmr(lapb);
456 lapb_dbg(0, "(%p) S3 -> S4\n", lapb->dev);
457 lapb_start_t1timer(lapb);
458 lapb_stop_t2timer(lapb);
459 lapb->state = LAPB_STATE_4;
460 lapb->n2count = 0;
472 static void lapb_state4_machine(struct lapb_cb *lapb, struct sk_buff *skb,
477 lapb_dbg(1, "(%p) S4 RX SABM(%d)\n", lapb->dev, frame->pf);
478 if (lapb->mode & LAPB_EXTENDED) {
480 lapb->dev, frame->pf);
481 lapb_send_control(lapb, LAPB_DM, frame->pf,
485 lapb->dev, frame->pf);
486 lapb_dbg(0, "(%p) S4 -> S3\n", lapb->dev);
487 lapb_send_control(lapb, LAPB_UA, frame->pf,
489 lapb_stop_t1timer(lapb);
490 lapb_stop_t2timer(lapb);
491 lapb->state = LAPB_STATE_3;
492 lapb->condition = 0x00;
493 lapb->n2count = 0;
494 lapb->vs = 0;
495 lapb->vr = 0;
496 lapb->va = 0;
497 lapb_connect_indication(lapb, LAPB_OK);
502 lapb_dbg(1, "(%p) S4 RX SABME(%d)\n", lapb->dev, frame->pf);
503 if (lapb->mode & LAPB_EXTENDED) {
505 lapb->dev, frame->pf);
506 lapb_dbg(0, "(%p) S4 -> S3\n", lapb->dev);
507 lapb_send_control(lapb, LAPB_UA, frame->pf,
509 lapb_stop_t1timer(lapb);
510 lapb_stop_t2timer(lapb);
511 lapb->state = LAPB_STATE_3;
512 lapb->condition = 0x00;
513 lapb->n2count = 0;
514 lapb->vs = 0;
515 lapb->vr = 0;
516 lapb->va = 0;
517 lapb_connect_indication(lapb, LAPB_OK);
520 lapb->dev, frame->pf);
521 lapb_send_control(lapb, LAPB_DM, frame->pf,
533 void lapb_data_input(struct lapb_cb *lapb, struct sk_buff *skb)
537 if (lapb_decode(lapb, skb, &frame) < 0) {
542 switch (lapb->state) {
544 lapb_state0_machine(lapb, skb, &frame); break;
546 lapb_state1_machine(lapb, skb, &frame); break;
548 lapb_state2_machine(lapb, skb, &frame); break;
550 lapb_state3_machine(lapb, skb, &frame); break;
552 lapb_state4_machine(lapb, skb, &frame); break;
555 lapb_kick(lapb);