33 void ax25_clear_queues(ax25_cb *ax25)  in ax25_clear_queues()  argument
35 	skb_queue_purge(&ax25->write_queue);  in ax25_clear_queues()
36 	skb_queue_purge(&ax25->ack_queue);  in ax25_clear_queues()
37 	skb_queue_purge(&ax25->reseq_queue);  in ax25_clear_queues()
38 	skb_queue_purge(&ax25->frag_queue);  in ax25_clear_queues()
46 void ax25_frames_acked(ax25_cb *ax25, unsigned short nr)  in ax25_frames_acked()  argument
53 	if (ax25->va != nr) {  in ax25_frames_acked()
54 		while (skb_peek(&ax25->ack_queue) != NULL && ax25->va != nr) {  in ax25_frames_acked()
55 			skb = skb_dequeue(&ax25->ack_queue);  in ax25_frames_acked()
57 			ax25->va = (ax25->va + 1) % ax25->modulus;  in ax25_frames_acked()
62 void ax25_requeue_frames(ax25_cb *ax25)  in ax25_requeue_frames()  argument
71 	while ((skb = skb_dequeue_tail(&ax25->ack_queue)) != NULL)  in ax25_requeue_frames()
72 		skb_queue_head(&ax25->write_queue, skb);  in ax25_requeue_frames()
79 int ax25_validate_nr(ax25_cb *ax25, unsigned short nr)  in ax25_validate_nr()  argument
81 	unsigned short vc = ax25->va;  in ax25_validate_nr()
83 	while (vc != ax25->vs) {  in ax25_validate_nr()
85 		vc = (vc + 1) % ax25->modulus;  in ax25_validate_nr()
88 	if (nr == ax25->vs) return 1;  in ax25_validate_nr()
97 int ax25_decode(ax25_cb *ax25, struct sk_buff *skb, int *ns, int *nr, int *pf)  in ax25_decode()  argument
105 	if (ax25->modulus == AX25_MODULUS) {  in ax25_decode()
147 void ax25_send_control(ax25_cb *ax25, int frametype, int poll_bit, int type)  in ax25_send_control()  argument
152 	if ((skb = alloc_skb(ax25->ax25_dev->dev->hard_header_len + 2, GFP_ATOMIC)) == NULL)  in ax25_send_control()
155 	skb_reserve(skb, ax25->ax25_dev->dev->hard_header_len);  in ax25_send_control()
160 	if (ax25->modulus == AX25_MODULUS) {  in ax25_send_control()
165 			*dptr |= (ax25->vr << 5);  in ax25_send_control()
174 			dptr[1] = (ax25->vr << 1);  in ax25_send_control()
179 	ax25_transmit_buffer(ax25, skb, type);  in ax25_send_control()
220 void ax25_calculate_t1(ax25_cb *ax25)  in ax25_calculate_t1()  argument
224 	switch (ax25->backoff) {  in ax25_calculate_t1()
229 		t += 2 * ax25->n2count;  in ax25_calculate_t1()
233 		for (n = 0; n < ax25->n2count; n++)  in ax25_calculate_t1()
239 	ax25->t1 = t * ax25->rtt;  in ax25_calculate_t1()
245 void ax25_calculate_rtt(ax25_cb *ax25)  in ax25_calculate_rtt()  argument
247 	if (ax25->backoff == 0)  in ax25_calculate_rtt()
250 	if (ax25_t1timer_running(ax25) && ax25->n2count == 0)  in ax25_calculate_rtt()
251 		ax25->rtt = (9 * ax25->rtt + ax25->t1 - ax25_display_timer(&ax25->t1timer)) / 10;  in ax25_calculate_rtt()
253 	if (ax25->rtt < AX25_T1CLAMPLO)  in ax25_calculate_rtt()
254 		ax25->rtt = AX25_T1CLAMPLO;  in ax25_calculate_rtt()
256 	if (ax25->rtt > AX25_T1CLAMPHI)  in ax25_calculate_rtt()
257 		ax25->rtt = AX25_T1CLAMPHI;  in ax25_calculate_rtt()
260 void ax25_disconnect(ax25_cb *ax25, int reason)  in ax25_disconnect()  argument
262 	ax25_clear_queues(ax25);  in ax25_disconnect()
265 		del_timer_sync(&ax25->timer);  in ax25_disconnect()
266 		del_timer_sync(&ax25->t1timer);  in ax25_disconnect()
267 		del_timer_sync(&ax25->t2timer);  in ax25_disconnect()
268 		del_timer_sync(&ax25->t3timer);  in ax25_disconnect()
269 		del_timer_sync(&ax25->idletimer);  in ax25_disconnect()
271 		if (!ax25->sk || !sock_flag(ax25->sk, SOCK_DESTROY))  in ax25_disconnect()
272 			ax25_stop_heartbeat(ax25);  in ax25_disconnect()
273 		ax25_stop_t1timer(ax25);  in ax25_disconnect()
274 		ax25_stop_t2timer(ax25);  in ax25_disconnect()
275 		ax25_stop_t3timer(ax25);  in ax25_disconnect()
276 		ax25_stop_idletimer(ax25);  in ax25_disconnect()
279 	ax25->state = AX25_STATE_0;  in ax25_disconnect()
281 	ax25_link_failed(ax25, reason);  in ax25_disconnect()
283 	if (ax25->sk != NULL) {  in ax25_disconnect()
285 		bh_lock_sock(ax25->sk);  in ax25_disconnect()
286 		ax25->sk->sk_state     = TCP_CLOSE;  in ax25_disconnect()
287 		ax25->sk->sk_err       = reason;  in ax25_disconnect()
288 		ax25->sk->sk_shutdown |= SEND_SHUTDOWN;  in ax25_disconnect()
289 		if (!sock_flag(ax25->sk, SOCK_DEAD)) {  in ax25_disconnect()
290 			ax25->sk->sk_state_change(ax25->sk);  in ax25_disconnect()
291 			sock_set_flag(ax25->sk, SOCK_DEAD);  in ax25_disconnect()
293 		bh_unlock_sock(ax25->sk);  in ax25_disconnect()