147 static int capiminor_add_ack(struct capiminor *mp, u16 datahandle)  in capiminor_add_ack()  argument
158 	spin_lock_bh(&mp->ackqlock);  in capiminor_add_ack()
159 	list_add_tail(&n->list, &mp->ackqueue);  in capiminor_add_ack()
160 	mp->nack++;  in capiminor_add_ack()
161 	spin_unlock_bh(&mp->ackqlock);  in capiminor_add_ack()
165 static int capiminor_del_ack(struct capiminor *mp, u16 datahandle)  in capiminor_del_ack()  argument
169 	spin_lock_bh(&mp->ackqlock);  in capiminor_del_ack()
170 	list_for_each_entry_safe(p, tmp, &mp->ackqueue, list) {  in capiminor_del_ack()
173 			mp->nack--;  in capiminor_del_ack()
174 			spin_unlock_bh(&mp->ackqlock);  in capiminor_del_ack()
179 	spin_unlock_bh(&mp->ackqlock);  in capiminor_del_ack()
183 static void capiminor_del_all_ack(struct capiminor *mp)  in capiminor_del_all_ack()  argument
187 	list_for_each_entry_safe(p, tmp, &mp->ackqueue, list) {  in capiminor_del_all_ack()
190 		mp->nack--;  in capiminor_del_all_ack()
199 	struct capiminor *mp = container_of(port, struct capiminor, port);  in capiminor_destroy()  local
201 	kfree_skb(mp->outskb);  in capiminor_destroy()
202 	skb_queue_purge(&mp->inqueue);  in capiminor_destroy()
203 	skb_queue_purge(&mp->outqueue);  in capiminor_destroy()
204 	capiminor_del_all_ack(mp);  in capiminor_destroy()
205 	kfree(mp);  in capiminor_destroy()
214 	struct capiminor *mp;  in capiminor_alloc()  local
218 	mp = kzalloc(sizeof(*mp), GFP_KERNEL);  in capiminor_alloc()
219 	if (!mp) {  in capiminor_alloc()
224 	mp->ap = ap;  in capiminor_alloc()
225 	mp->ncci = ncci;  in capiminor_alloc()
226 	INIT_LIST_HEAD(&mp->ackqueue);  in capiminor_alloc()
227 	spin_lock_init(&mp->ackqlock);  in capiminor_alloc()
229 	skb_queue_head_init(&mp->inqueue);  in capiminor_alloc()
230 	skb_queue_head_init(&mp->outqueue);  in capiminor_alloc()
231 	spin_lock_init(&mp->outlock);  in capiminor_alloc()
233 	tty_port_init(&mp->port);  in capiminor_alloc()
234 	mp->port.ops = &capiminor_port_ops;  in capiminor_alloc()
240 			capiminors[minor] = mp;  in capiminor_alloc()
250 	mp->minor = minor;  in capiminor_alloc()
252 	dev = tty_port_register_device(&mp->port, capinc_tty_driver, minor,  in capiminor_alloc()
257 	return mp;  in capiminor_alloc()
265 	tty_port_put(&mp->port);  in capiminor_alloc()
271 	struct capiminor *mp;  in capiminor_get()  local
274 	mp = capiminors[minor];  in capiminor_get()
275 	if (mp)  in capiminor_get()
276 		tty_port_get(&mp->port);  in capiminor_get()
279 	return mp;  in capiminor_get()
282 static inline void capiminor_put(struct capiminor *mp)  in capiminor_put()  argument
284 	tty_port_put(&mp->port);  in capiminor_put()
287 static void capiminor_free(struct capiminor *mp)  in capiminor_free()  argument
289 	tty_unregister_device(capinc_tty_driver, mp->minor);  in capiminor_free()
292 	capiminors[mp->minor] = NULL;  in capiminor_free()
295 	capiminor_put(mp);  in capiminor_free()
308 	struct capiminor *mp = np->minorp;  in capincci_free_minor()  local
310 	if (mp) {  in capincci_free_minor()
311 		tty_port_tty_vhangup(&mp->port);  in capincci_free_minor()
312 		capiminor_free(mp);  in capincci_free_minor()
318 	struct capiminor *mp = np->minorp;  in capincci_minor_opencount()  local
322 	if (mp) {  in capincci_minor_opencount()
323 		tty = tty_port_tty_get(&mp->port);  in capincci_minor_opencount()
383 gen_data_b3_resp_for(struct capiminor *mp, struct sk_buff *skb)  in gen_data_b3_resp_for()  argument
391 		capimsg_setu16(s, 2, mp->ap->applid);  in gen_data_b3_resp_for()
394 		capimsg_setu16(s, 6, atomic_inc_return(&mp->msgid));  in gen_data_b3_resp_for()
395 		capimsg_setu32(s, 8, mp->ncci);  in gen_data_b3_resp_for()
401 static int handle_recv_skb(struct capiminor *mp, struct sk_buff *skb)  in handle_recv_skb()  argument
410 	tty = tty_port_tty_get(&mp->port);  in handle_recv_skb()
429 	if (mp->ttyinstop) {  in handle_recv_skb()
439 	nskb = gen_data_b3_resp_for(mp, skb);  in handle_recv_skb()
447 	errcode = capi20_put_message(mp->ap, nskb);  in handle_recv_skb()
475 static void handle_minor_recv(struct capiminor *mp)  in handle_minor_recv()  argument
479 	while ((skb = skb_dequeue(&mp->inqueue)) != NULL)  in handle_minor_recv()
480 		if (handle_recv_skb(mp, skb) < 0) {  in handle_minor_recv()
481 			skb_queue_head(&mp->inqueue, skb);  in handle_minor_recv()
486 static void handle_minor_send(struct capiminor *mp)  in handle_minor_send()  argument
494 	tty = tty_port_tty_get(&mp->port);  in handle_minor_send()
498 	if (mp->ttyoutstop) {  in handle_minor_send()
505 		spin_lock_bh(&mp->outlock);  in handle_minor_send()
506 		skb = __skb_dequeue(&mp->outqueue);  in handle_minor_send()
508 			spin_unlock_bh(&mp->outlock);  in handle_minor_send()
512 		mp->outbytes -= len;  in handle_minor_send()
513 		spin_unlock_bh(&mp->outlock);  in handle_minor_send()
515 		datahandle = atomic_inc_return(&mp->datahandle);  in handle_minor_send()
519 		capimsg_setu16(skb->data, 2, mp->ap->applid);  in handle_minor_send()
522 		capimsg_setu16(skb->data, 6, atomic_inc_return(&mp->msgid));  in handle_minor_send()
523 		capimsg_setu32(skb->data, 8, mp->ncci);	/* NCCI */  in handle_minor_send()
529 		if (capiminor_add_ack(mp, datahandle) < 0) {  in handle_minor_send()
532 			spin_lock_bh(&mp->outlock);  in handle_minor_send()
533 			__skb_queue_head(&mp->outqueue, skb);  in handle_minor_send()
534 			mp->outbytes += len;  in handle_minor_send()
535 			spin_unlock_bh(&mp->outlock);  in handle_minor_send()
539 		errcode = capi20_put_message(mp->ap, skb);  in handle_minor_send()
545 		capiminor_del_ack(mp, datahandle);  in handle_minor_send()
550 			spin_lock_bh(&mp->outlock);  in handle_minor_send()
551 			__skb_queue_head(&mp->outqueue, skb);  in handle_minor_send()
552 			mp->outbytes += len;  in handle_minor_send()
553 			spin_unlock_bh(&mp->outlock);  in handle_minor_send()
572 	struct capiminor *mp;  in capi_recv_message()  local
607 	mp = np->minorp;  in capi_recv_message()
608 	if (!mp) {  in capi_recv_message()
617 		skb_queue_tail(&mp->inqueue, skb);  in capi_recv_message()
619 		handle_minor_recv(mp);  in capi_recv_message()
628 		capiminor_del_ack(mp, datahandle);  in capi_recv_message()
629 		tty_port_tty_wakeup(&mp->port);  in capi_recv_message()
630 		handle_minor_send(mp);  in capi_recv_message()
916 		struct capiminor *mp;  in capi_ioctl()  local
926 			mp = nccip->minorp;  in capi_ioctl()
927 			if (mp)  in capi_ioctl()
928 				unit = mp->minor;  in capi_ioctl()
1038 	struct capiminor *mp = capiminor_get(tty->index);  in capinc_tty_install()  local
1042 		tty->driver_data = mp;  in capinc_tty_install()
1044 		capiminor_put(mp);  in capinc_tty_install()
1050 	struct capiminor *mp = tty->driver_data;  in capinc_tty_cleanup()  local
1052 	capiminor_put(mp);  in capinc_tty_cleanup()
1057 	struct capiminor *mp = tty->driver_data;  in capinc_tty_open()  local
1060 	err = tty_port_open(&mp->port, tty, filp);  in capinc_tty_open()
1064 	handle_minor_recv(mp);  in capinc_tty_open()
1070 	struct capiminor *mp = tty->driver_data;  in capinc_tty_close()  local
1072 	tty_port_close(&mp->port, tty, filp);  in capinc_tty_close()
1078 	struct capiminor *mp = tty->driver_data;  in capinc_tty_write()  local
1083 	spin_lock_bh(&mp->outlock);  in capinc_tty_write()
1084 	skb = mp->outskb;  in capinc_tty_write()
1086 		mp->outskb = NULL;  in capinc_tty_write()
1087 		__skb_queue_tail(&mp->outqueue, skb);  in capinc_tty_write()
1088 		mp->outbytes += skb->len;  in capinc_tty_write()
1094 		spin_unlock_bh(&mp->outlock);  in capinc_tty_write()
1101 	__skb_queue_tail(&mp->outqueue, skb);  in capinc_tty_write()
1102 	mp->outbytes += skb->len;  in capinc_tty_write()
1103 	spin_unlock_bh(&mp->outlock);  in capinc_tty_write()
1105 	handle_minor_send(mp);  in capinc_tty_write()
1112 	struct capiminor *mp = tty->driver_data;  in capinc_tty_put_char()  local
1119 	spin_lock_bh(&mp->outlock);  in capinc_tty_put_char()
1120 	skb = mp->outskb;  in capinc_tty_put_char()
1126 		mp->outskb = NULL;  in capinc_tty_put_char()
1127 		__skb_queue_tail(&mp->outqueue, skb);  in capinc_tty_put_char()
1128 		mp->outbytes += skb->len;  in capinc_tty_put_char()
1136 		mp->outskb = skb;  in capinc_tty_put_char()
1143 	spin_unlock_bh(&mp->outlock);  in capinc_tty_put_char()
1146 		handle_minor_send(mp);  in capinc_tty_put_char()
1153 	struct capiminor *mp = tty->driver_data;  in capinc_tty_flush_chars()  local
1156 	spin_lock_bh(&mp->outlock);  in capinc_tty_flush_chars()
1157 	skb = mp->outskb;  in capinc_tty_flush_chars()
1159 		mp->outskb = NULL;  in capinc_tty_flush_chars()
1160 		__skb_queue_tail(&mp->outqueue, skb);  in capinc_tty_flush_chars()
1161 		mp->outbytes += skb->len;  in capinc_tty_flush_chars()
1162 		spin_unlock_bh(&mp->outlock);  in capinc_tty_flush_chars()
1164 		handle_minor_send(mp);  in capinc_tty_flush_chars()
1166 		spin_unlock_bh(&mp->outlock);  in capinc_tty_flush_chars()
1168 	handle_minor_recv(mp);  in capinc_tty_flush_chars()
1173 	struct capiminor *mp = tty->driver_data;  in capinc_tty_write_room()  local
1176 	room = CAPINC_MAX_SENDQUEUE-skb_queue_len(&mp->outqueue);  in capinc_tty_write_room()
1184 	struct capiminor *mp = tty->driver_data;  in capinc_tty_chars_in_buffer()  local
1187 		 mp->outbytes, mp->nack,  in capinc_tty_chars_in_buffer()
1188 		 skb_queue_len(&mp->outqueue),  in capinc_tty_chars_in_buffer()
1189 		 skb_queue_len(&mp->inqueue));  in capinc_tty_chars_in_buffer()
1190 	return mp->outbytes;  in capinc_tty_chars_in_buffer()
1195 	struct capiminor *mp = tty->driver_data;  in capinc_tty_throttle()  local
1196 	mp->ttyinstop = 1;  in capinc_tty_throttle()
1201 	struct capiminor *mp = tty->driver_data;  in capinc_tty_unthrottle()  local
1203 	mp->ttyinstop = 0;  in capinc_tty_unthrottle()
1204 	handle_minor_recv(mp);  in capinc_tty_unthrottle()
1209 	struct capiminor *mp = tty->driver_data;  in capinc_tty_stop()  local
1211 	mp->ttyoutstop = 1;  in capinc_tty_stop()
1216 	struct capiminor *mp = tty->driver_data;  in capinc_tty_start()  local
1218 	mp->ttyoutstop = 0;  in capinc_tty_start()
1219 	handle_minor_send(mp);  in capinc_tty_start()
1224 	struct capiminor *mp = tty->driver_data;  in capinc_tty_hangup()  local
1226 	tty_port_hangup(&mp->port);  in capinc_tty_hangup()