Lines Matching refs:lapb
40 #include <net/lapb.h>
46 * Free an allocated lapb control block.
48 static void lapb_free_cb(struct lapb_cb *lapb)
50 kfree(lapb);
53 static __inline__ void lapb_hold(struct lapb_cb *lapb)
55 atomic_inc(&lapb->refcnt);
58 static __inline__ void lapb_put(struct lapb_cb *lapb)
60 if (atomic_dec_and_test(&lapb->refcnt))
61 lapb_free_cb(lapb);
67 static void __lapb_remove_cb(struct lapb_cb *lapb)
69 if (lapb->node.next) {
70 list_del(&lapb->node);
71 lapb_put(lapb);
78 static void __lapb_insert_cb(struct lapb_cb *lapb)
80 list_add(&lapb->node, &lapb_list);
81 lapb_hold(lapb);
87 struct lapb_cb *lapb, *use = NULL;
90 lapb = list_entry(entry, struct lapb_cb, node);
91 if (lapb->dev == dev) {
92 use = lapb;
118 struct lapb_cb *lapb = kzalloc(sizeof(*lapb), GFP_ATOMIC);
121 if (!lapb)
124 skb_queue_head_init(&lapb->write_queue);
125 skb_queue_head_init(&lapb->ack_queue);
127 init_timer(&lapb->t1timer);
128 init_timer(&lapb->t2timer);
130 lapb->t1 = LAPB_DEFAULT_T1;
131 lapb->t2 = LAPB_DEFAULT_T2;
132 lapb->n2 = LAPB_DEFAULT_N2;
133 lapb->mode = LAPB_DEFAULT_MODE;
134 lapb->window = LAPB_DEFAULT_WINDOW;
135 lapb->state = LAPB_STATE_0;
136 atomic_set(&lapb->refcnt, 1);
138 return lapb;
143 struct lapb_cb *lapb;
148 lapb = __lapb_devtostruct(dev);
149 if (lapb) {
150 lapb_put(lapb);
154 lapb = lapb_create_cb();
156 if (!lapb)
159 lapb->dev = dev;
160 lapb->callbacks = *callbacks;
162 __lapb_insert_cb(lapb);
164 lapb_start_t1timer(lapb);
174 struct lapb_cb *lapb;
178 lapb = __lapb_devtostruct(dev);
179 if (!lapb)
182 lapb_stop_t1timer(lapb);
183 lapb_stop_t2timer(lapb);
185 lapb_clear_queues(lapb);
187 __lapb_remove_cb(lapb);
189 lapb_put(lapb);
199 struct lapb_cb *lapb = lapb_devtostruct(dev);
201 if (!lapb)
204 parms->t1 = lapb->t1 / HZ;
205 parms->t2 = lapb->t2 / HZ;
206 parms->n2 = lapb->n2;
207 parms->n2count = lapb->n2count;
208 parms->state = lapb->state;
209 parms->window = lapb->window;
210 parms->mode = lapb->mode;
212 if (!timer_pending(&lapb->t1timer))
215 parms->t1timer = (lapb->t1timer.expires - jiffies) / HZ;
217 if (!timer_pending(&lapb->t2timer))
220 parms->t2timer = (lapb->t2timer.expires - jiffies) / HZ;
222 lapb_put(lapb);
231 struct lapb_cb *lapb = lapb_devtostruct(dev);
233 if (!lapb)
240 if (lapb->state == LAPB_STATE_0) {
248 lapb->mode = parms->mode;
249 lapb->window = parms->window;
252 lapb->t1 = parms->t1 * HZ;
253 lapb->t2 = parms->t2 * HZ;
254 lapb->n2 = parms->n2;
258 lapb_put(lapb);
265 struct lapb_cb *lapb = lapb_devtostruct(dev);
268 if (!lapb)
272 if (lapb->state == LAPB_STATE_1)
276 if (lapb->state == LAPB_STATE_3 || lapb->state == LAPB_STATE_4)
279 lapb_establish_data_link(lapb);
282 printk(KERN_DEBUG "lapb: (%p) S0 -> S1\n", lapb->dev);
284 lapb->state = LAPB_STATE_1;
288 lapb_put(lapb);
295 struct lapb_cb *lapb = lapb_devtostruct(dev);
298 if (!lapb)
301 switch (lapb->state) {
308 printk(KERN_DEBUG "lapb: (%p) S1 TX DISC(1)\n", lapb->dev);
311 printk(KERN_DEBUG "lapb: (%p) S1 -> S0\n", lapb->dev);
313 lapb_send_control(lapb, LAPB_DISC, LAPB_POLLON, LAPB_COMMAND);
314 lapb->state = LAPB_STATE_0;
315 lapb_start_t1timer(lapb);
324 lapb_clear_queues(lapb);
325 lapb->n2count = 0;
326 lapb_send_control(lapb, LAPB_DISC, LAPB_POLLON, LAPB_COMMAND);
327 lapb_start_t1timer(lapb);
328 lapb_stop_t2timer(lapb);
329 lapb->state = LAPB_STATE_2;
332 printk(KERN_DEBUG "lapb: (%p) S3 DISC(1)\n", lapb->dev);
335 printk(KERN_DEBUG "lapb: (%p) S3 -> S2\n", lapb->dev);
340 lapb_put(lapb);
347 struct lapb_cb *lapb = lapb_devtostruct(dev);
350 if (!lapb)
354 if (lapb->state != LAPB_STATE_3 && lapb->state != LAPB_STATE_4)
357 skb_queue_tail(&lapb->write_queue, skb);
358 lapb_kick(lapb);
361 lapb_put(lapb);
368 struct lapb_cb *lapb = lapb_devtostruct(dev);
371 if (lapb) {
372 lapb_data_input(lapb, skb);
373 lapb_put(lapb);
380 void lapb_connect_confirmation(struct lapb_cb *lapb, int reason)
382 if (lapb->callbacks.connect_confirmation)
383 lapb->callbacks.connect_confirmation(lapb->dev, reason);
386 void lapb_connect_indication(struct lapb_cb *lapb, int reason)
388 if (lapb->callbacks.connect_indication)
389 lapb->callbacks.connect_indication(lapb->dev, reason);
392 void lapb_disconnect_confirmation(struct lapb_cb *lapb, int reason)
394 if (lapb->callbacks.disconnect_confirmation)
395 lapb->callbacks.disconnect_confirmation(lapb->dev, reason);
398 void lapb_disconnect_indication(struct lapb_cb *lapb, int reason)
400 if (lapb->callbacks.disconnect_indication)
401 lapb->callbacks.disconnect_indication(lapb->dev, reason);
404 int lapb_data_indication(struct lapb_cb *lapb, struct sk_buff *skb)
406 if (lapb->callbacks.data_indication)
407 return lapb->callbacks.data_indication(lapb->dev, skb);
413 int lapb_data_transmit(struct lapb_cb *lapb, struct sk_buff *skb)
417 if (lapb->callbacks.data_transmit) {
418 lapb->callbacks.data_transmit(lapb->dev, skb);