Lines Matching refs:ap
89 static struct sk_buff* ppp_sync_txmunge(struct syncppp *ap, struct sk_buff *);
94 static int ppp_sync_push(struct syncppp *ap);
95 static void ppp_sync_flush_output(struct syncppp *ap);
96 static void ppp_sync_input(struct syncppp *ap, const unsigned char *buf,
136 struct syncppp *ap; in sp_get() local
139 ap = tty->disc_data; in sp_get()
140 if (ap != NULL) in sp_get()
141 refcount_inc(&ap->refcnt); in sp_get()
143 return ap; in sp_get()
146 static void sp_put(struct syncppp *ap) in sp_put() argument
148 if (refcount_dec_and_test(&ap->refcnt)) in sp_put()
149 complete(&ap->dead_cmp); in sp_put()
158 struct syncppp *ap; in ppp_sync_open() local
165 ap = kzalloc(sizeof(*ap), GFP_KERNEL); in ppp_sync_open()
167 if (!ap) in ppp_sync_open()
171 ap->tty = tty; in ppp_sync_open()
172 ap->mru = PPP_MRU; in ppp_sync_open()
173 spin_lock_init(&ap->xmit_lock); in ppp_sync_open()
174 spin_lock_init(&ap->recv_lock); in ppp_sync_open()
175 ap->xaccm[0] = ~0U; in ppp_sync_open()
176 ap->xaccm[3] = 0x60000000U; in ppp_sync_open()
177 ap->raccm = ~0U; in ppp_sync_open()
179 skb_queue_head_init(&ap->rqueue); in ppp_sync_open()
180 tasklet_setup(&ap->tsk, ppp_sync_process); in ppp_sync_open()
182 refcount_set(&ap->refcnt, 1); in ppp_sync_open()
183 init_completion(&ap->dead_cmp); in ppp_sync_open()
185 ap->chan.private = ap; in ppp_sync_open()
186 ap->chan.ops = &sync_ops; in ppp_sync_open()
187 ap->chan.mtu = PPP_MRU; in ppp_sync_open()
188 ap->chan.hdrlen = 2; /* for A/C bytes */ in ppp_sync_open()
190 ap->chan.speed = speed; in ppp_sync_open()
191 err = ppp_register_channel(&ap->chan); in ppp_sync_open()
195 tty->disc_data = ap; in ppp_sync_open()
200 kfree(ap); in ppp_sync_open()
216 struct syncppp *ap; in ppp_sync_close() local
219 ap = tty->disc_data; in ppp_sync_close()
222 if (!ap) in ppp_sync_close()
232 if (!refcount_dec_and_test(&ap->refcnt)) in ppp_sync_close()
233 wait_for_completion(&ap->dead_cmp); in ppp_sync_close()
234 tasklet_kill(&ap->tsk); in ppp_sync_close()
236 ppp_unregister_channel(&ap->chan); in ppp_sync_close()
237 skb_queue_purge(&ap->rqueue); in ppp_sync_close()
238 kfree_skb(ap->tpkt); in ppp_sync_close()
239 kfree(ap); in ppp_sync_close()
279 struct syncppp *ap = sp_get(tty); in ppp_synctty_ioctl() local
283 if (!ap) in ppp_synctty_ioctl()
289 if (put_user(ppp_channel_index(&ap->chan), p)) in ppp_synctty_ioctl()
296 if (put_user(ppp_unit_number(&ap->chan), p)) in ppp_synctty_ioctl()
304 ppp_sync_flush_output(ap); in ppp_synctty_ioctl()
320 sp_put(ap); in ppp_synctty_ioctl()
336 struct syncppp *ap = sp_get(tty); in ppp_sync_receive() local
339 if (!ap) in ppp_sync_receive()
341 spin_lock_irqsave(&ap->recv_lock, flags); in ppp_sync_receive()
342 ppp_sync_input(ap, buf, cflags, count); in ppp_sync_receive()
343 spin_unlock_irqrestore(&ap->recv_lock, flags); in ppp_sync_receive()
344 if (!skb_queue_empty(&ap->rqueue)) in ppp_sync_receive()
345 tasklet_schedule(&ap->tsk); in ppp_sync_receive()
346 sp_put(ap); in ppp_sync_receive()
353 struct syncppp *ap = sp_get(tty); in ppp_sync_wakeup() local
356 if (!ap) in ppp_sync_wakeup()
358 set_bit(XMIT_WAKEUP, &ap->xmit_flags); in ppp_sync_wakeup()
359 tasklet_schedule(&ap->tsk); in ppp_sync_wakeup()
360 sp_put(ap); in ppp_sync_wakeup()
397 struct syncppp *ap = chan->private; in ppp_sync_ioctl() local
406 val = ap->flags | ap->rbits; in ppp_sync_ioctl()
414 ap->flags = val & ~SC_RCV_BITS; in ppp_sync_ioctl()
415 spin_lock_irq(&ap->recv_lock); in ppp_sync_ioctl()
416 ap->rbits = val & SC_RCV_BITS; in ppp_sync_ioctl()
417 spin_unlock_irq(&ap->recv_lock); in ppp_sync_ioctl()
422 if (put_user(ap->xaccm[0], p)) in ppp_sync_ioctl()
427 if (get_user(ap->xaccm[0], p)) in ppp_sync_ioctl()
433 if (put_user(ap->raccm, p)) in ppp_sync_ioctl()
438 if (get_user(ap->raccm, p)) in ppp_sync_ioctl()
444 if (copy_to_user(argp, ap->xaccm, sizeof(ap->xaccm))) in ppp_sync_ioctl()
453 memcpy(ap->xaccm, accm, sizeof(ap->xaccm)); in ppp_sync_ioctl()
458 if (put_user(ap->mru, (int __user *) argp)) in ppp_sync_ioctl()
467 ap->mru = val; in ppp_sync_ioctl()
484 struct syncppp *ap = from_tasklet(ap, t, tsk); in ppp_sync_process() local
488 while ((skb = skb_dequeue(&ap->rqueue)) != NULL) { in ppp_sync_process()
491 ppp_input_error(&ap->chan, 0); in ppp_sync_process()
495 ppp_input(&ap->chan, skb); in ppp_sync_process()
499 if (test_bit(XMIT_WAKEUP, &ap->xmit_flags) && ppp_sync_push(ap)) in ppp_sync_process()
500 ppp_output_wakeup(&ap->chan); in ppp_sync_process()
508 ppp_sync_txmunge(struct syncppp *ap, struct sk_buff *skb) in ppp_sync_txmunge() argument
524 if (data[0] == 0 && (ap->flags & SC_COMP_PROT) && !islcp) in ppp_sync_txmunge()
528 if ((ap->flags & SC_COMP_AC) == 0 || islcp) { in ppp_sync_txmunge()
546 ap->last_xmit = jiffies; in ppp_sync_txmunge()
548 if (skb && ap->flags & SC_LOG_OUTPKT) in ppp_sync_txmunge()
567 struct syncppp *ap = chan->private; in ppp_sync_send() local
569 ppp_sync_push(ap); in ppp_sync_send()
571 if (test_and_set_bit(XMIT_FULL, &ap->xmit_flags)) in ppp_sync_send()
573 skb = ppp_sync_txmunge(ap, skb); in ppp_sync_send()
575 ap->tpkt = skb; in ppp_sync_send()
577 clear_bit(XMIT_FULL, &ap->xmit_flags); in ppp_sync_send()
579 ppp_sync_push(ap); in ppp_sync_send()
587 ppp_sync_push(struct syncppp *ap) in ppp_sync_push() argument
590 struct tty_struct *tty = ap->tty; in ppp_sync_push()
593 if (!spin_trylock_bh(&ap->xmit_lock)) in ppp_sync_push()
596 if (test_and_clear_bit(XMIT_WAKEUP, &ap->xmit_flags)) in ppp_sync_push()
598 if (!tty_stuffed && ap->tpkt) { in ppp_sync_push()
600 sent = tty->ops->write(tty, ap->tpkt->data, ap->tpkt->len); in ppp_sync_push()
603 if (sent < ap->tpkt->len) { in ppp_sync_push()
606 consume_skb(ap->tpkt); in ppp_sync_push()
607 ap->tpkt = NULL; in ppp_sync_push()
608 clear_bit(XMIT_FULL, &ap->xmit_flags); in ppp_sync_push()
614 spin_unlock_bh(&ap->xmit_lock); in ppp_sync_push()
615 if (!(test_bit(XMIT_WAKEUP, &ap->xmit_flags) || in ppp_sync_push()
616 (!tty_stuffed && ap->tpkt))) in ppp_sync_push()
618 if (!spin_trylock_bh(&ap->xmit_lock)) in ppp_sync_push()
624 if (ap->tpkt) { in ppp_sync_push()
625 kfree_skb(ap->tpkt); in ppp_sync_push()
626 ap->tpkt = NULL; in ppp_sync_push()
627 clear_bit(XMIT_FULL, &ap->xmit_flags); in ppp_sync_push()
630 spin_unlock_bh(&ap->xmit_lock); in ppp_sync_push()
639 ppp_sync_flush_output(struct syncppp *ap) in ppp_sync_flush_output() argument
643 spin_lock_bh(&ap->xmit_lock); in ppp_sync_flush_output()
644 if (ap->tpkt != NULL) { in ppp_sync_flush_output()
645 kfree_skb(ap->tpkt); in ppp_sync_flush_output()
646 ap->tpkt = NULL; in ppp_sync_flush_output()
647 clear_bit(XMIT_FULL, &ap->xmit_flags); in ppp_sync_flush_output()
650 spin_unlock_bh(&ap->xmit_lock); in ppp_sync_flush_output()
652 ppp_output_wakeup(&ap->chan); in ppp_sync_flush_output()
666 ppp_sync_input(struct syncppp *ap, const unsigned char *buf, in ppp_sync_input() argument
675 if (ap->flags & SC_LOG_INPKT) in ppp_sync_input()
679 skb = dev_alloc_skb(ap->mru + PPP_HDRLEN + 2); in ppp_sync_input()
714 skb_queue_tail(&ap->rqueue, skb); in ppp_sync_input()
721 skb_queue_tail(&ap->rqueue, skb); in ppp_sync_input()