Lines Matching full: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 u8 *buf, const u8 *flags,
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()
226 * We have now ensured that nobody can start using ap from now 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()
278 struct syncppp *ap = sp_get(tty); in ppp_synctty_ioctl() local
282 if (!ap) in ppp_synctty_ioctl()
288 if (put_user(ppp_channel_index(&ap->chan), p)) in ppp_synctty_ioctl()
295 if (put_user(ppp_unit_number(&ap->chan), p)) in ppp_synctty_ioctl()
303 ppp_sync_flush_output(ap); in ppp_synctty_ioctl()
319 sp_put(ap); in ppp_synctty_ioctl()
328 struct syncppp *ap = sp_get(tty); in ppp_sync_receive() local
331 if (!ap) in ppp_sync_receive()
333 spin_lock_irqsave(&ap->recv_lock, flags); in ppp_sync_receive()
334 ppp_sync_input(ap, buf, cflags, count); in ppp_sync_receive()
335 spin_unlock_irqrestore(&ap->recv_lock, flags); in ppp_sync_receive()
336 if (!skb_queue_empty(&ap->rqueue)) in ppp_sync_receive()
337 tasklet_schedule(&ap->tsk); in ppp_sync_receive()
338 sp_put(ap); in ppp_sync_receive()
345 struct syncppp *ap = sp_get(tty); in ppp_sync_wakeup() local
348 if (!ap) in ppp_sync_wakeup()
350 set_bit(XMIT_WAKEUP, &ap->xmit_flags); in ppp_sync_wakeup()
351 tasklet_schedule(&ap->tsk); in ppp_sync_wakeup()
352 sp_put(ap); in ppp_sync_wakeup()
388 struct syncppp *ap = chan->private; in ppp_sync_ioctl() local
397 val = ap->flags | ap->rbits; in ppp_sync_ioctl()
405 ap->flags = val & ~SC_RCV_BITS; in ppp_sync_ioctl()
406 spin_lock_irq(&ap->recv_lock); in ppp_sync_ioctl()
407 ap->rbits = val & SC_RCV_BITS; in ppp_sync_ioctl()
408 spin_unlock_irq(&ap->recv_lock); in ppp_sync_ioctl()
413 if (put_user(ap->xaccm[0], p)) in ppp_sync_ioctl()
418 if (get_user(ap->xaccm[0], p)) in ppp_sync_ioctl()
424 if (put_user(ap->raccm, p)) in ppp_sync_ioctl()
429 if (get_user(ap->raccm, p)) in ppp_sync_ioctl()
435 if (copy_to_user(argp, ap->xaccm, sizeof(ap->xaccm))) in ppp_sync_ioctl()
444 memcpy(ap->xaccm, accm, sizeof(ap->xaccm)); in ppp_sync_ioctl()
449 if (put_user(ap->mru, (int __user *) argp)) in ppp_sync_ioctl()
462 ap->mru = val; in ppp_sync_ioctl()
479 struct syncppp *ap = from_tasklet(ap, t, tsk); in ppp_sync_process() local
483 while ((skb = skb_dequeue(&ap->rqueue)) != NULL) { in ppp_sync_process()
486 ppp_input_error(&ap->chan, 0); in ppp_sync_process()
490 ppp_input(&ap->chan, skb); in ppp_sync_process()
494 if (test_bit(XMIT_WAKEUP, &ap->xmit_flags) && ppp_sync_push(ap)) in ppp_sync_process()
495 ppp_output_wakeup(&ap->chan); in ppp_sync_process()
503 ppp_sync_txmunge(struct syncppp *ap, struct sk_buff *skb) in ppp_sync_txmunge() argument
519 if (data[0] == 0 && (ap->flags & SC_COMP_PROT) && !islcp) in ppp_sync_txmunge()
523 if ((ap->flags & SC_COMP_AC) == 0 || islcp) { in ppp_sync_txmunge()
541 ap->last_xmit = jiffies; in ppp_sync_txmunge()
543 if (skb && ap->flags & SC_LOG_OUTPKT) in ppp_sync_txmunge()
562 struct syncppp *ap = chan->private; in ppp_sync_send() local
564 ppp_sync_push(ap); in ppp_sync_send()
566 if (test_and_set_bit(XMIT_FULL, &ap->xmit_flags)) in ppp_sync_send()
568 skb = ppp_sync_txmunge(ap, skb); in ppp_sync_send()
570 ap->tpkt = skb; in ppp_sync_send()
572 clear_bit(XMIT_FULL, &ap->xmit_flags); in ppp_sync_send()
574 ppp_sync_push(ap); in ppp_sync_send()
582 ppp_sync_push(struct syncppp *ap) in ppp_sync_push() argument
585 struct tty_struct *tty = ap->tty; in ppp_sync_push()
588 if (!spin_trylock_bh(&ap->xmit_lock)) in ppp_sync_push()
591 if (test_and_clear_bit(XMIT_WAKEUP, &ap->xmit_flags)) in ppp_sync_push()
593 if (!tty_stuffed && ap->tpkt) { in ppp_sync_push()
595 sent = tty->ops->write(tty, ap->tpkt->data, ap->tpkt->len); in ppp_sync_push()
598 if (sent < ap->tpkt->len) { in ppp_sync_push()
601 consume_skb(ap->tpkt); in ppp_sync_push()
602 ap->tpkt = NULL; in ppp_sync_push()
603 clear_bit(XMIT_FULL, &ap->xmit_flags); in ppp_sync_push()
609 spin_unlock_bh(&ap->xmit_lock); in ppp_sync_push()
610 if (!(test_bit(XMIT_WAKEUP, &ap->xmit_flags) || in ppp_sync_push()
611 (!tty_stuffed && ap->tpkt))) in ppp_sync_push()
613 if (!spin_trylock_bh(&ap->xmit_lock)) in ppp_sync_push()
619 if (ap->tpkt) { in ppp_sync_push()
620 kfree_skb(ap->tpkt); in ppp_sync_push()
621 ap->tpkt = NULL; in ppp_sync_push()
622 clear_bit(XMIT_FULL, &ap->xmit_flags); in ppp_sync_push()
625 spin_unlock_bh(&ap->xmit_lock); in ppp_sync_push()
634 ppp_sync_flush_output(struct syncppp *ap) in ppp_sync_flush_output() argument
638 spin_lock_bh(&ap->xmit_lock); in ppp_sync_flush_output()
639 if (ap->tpkt != NULL) { in ppp_sync_flush_output()
640 kfree_skb(ap->tpkt); in ppp_sync_flush_output()
641 ap->tpkt = NULL; in ppp_sync_flush_output()
642 clear_bit(XMIT_FULL, &ap->xmit_flags); in ppp_sync_flush_output()
645 spin_unlock_bh(&ap->xmit_lock); in ppp_sync_flush_output()
647 ppp_output_wakeup(&ap->chan); in ppp_sync_flush_output()
661 ppp_sync_input(struct syncppp *ap, const u8 *buf, const u8 *flags, int count) in ppp_sync_input() argument
669 if (ap->flags & SC_LOG_INPKT) in ppp_sync_input()
673 skb = dev_alloc_skb(ap->mru + PPP_HDRLEN + 2); in ppp_sync_input()
708 skb_queue_tail(&ap->rqueue, skb); in ppp_sync_input()
715 skb_queue_tail(&ap->rqueue, skb); in ppp_sync_input()