38 	ax25_cb *ax25;  in ax25_send_frame()  local
54 	if ((ax25 = ax25_find_cb(src, dest, digi, dev)) != NULL) {  in ax25_send_frame()
55 		ax25_output(ax25, paclen, skb);  in ax25_send_frame()
56 		return ax25;		/* It already existed */  in ax25_send_frame()
62 	if ((ax25 = ax25_create_cb()) == NULL)  in ax25_send_frame()
65 	ax25_fillin_cb(ax25, ax25_dev);  in ax25_send_frame()
67 	ax25->source_addr = *src;  in ax25_send_frame()
68 	ax25->dest_addr   = *dest;  in ax25_send_frame()
71 		ax25->digipeat = kmemdup(digi, sizeof(*digi), GFP_ATOMIC);  in ax25_send_frame()
72 		if (ax25->digipeat == NULL) {  in ax25_send_frame()
73 			ax25_cb_put(ax25);  in ax25_send_frame()
78 	switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {  in ax25_send_frame()
81 		ax25_std_establish_data_link(ax25);  in ax25_send_frame()
87 			ax25_ds_establish_data_link(ax25);  in ax25_send_frame()
89 			ax25_std_establish_data_link(ax25);  in ax25_send_frame()
98 	ax25_cb_hold(ax25);  in ax25_send_frame()
100 	ax25_cb_add(ax25);  in ax25_send_frame()
102 	ax25->state = AX25_STATE_1;  in ax25_send_frame()
104 	ax25_start_heartbeat(ax25);  in ax25_send_frame()
106 	ax25_output(ax25, paclen, skb);  in ax25_send_frame()
108 	return ax25;			/* We had to create it */  in ax25_send_frame()
119 void ax25_output(ax25_cb *ax25, int paclen, struct sk_buff *skb)  in ax25_output()  argument
184 			skb_queue_tail(&ax25->write_queue, skbn); /* Throw it on the queue */  in ax25_output()
189 		skb_queue_tail(&ax25->write_queue, skb);	  /* Throw it on the queue */  in ax25_output()
192 	switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {  in ax25_output()
195 		ax25_kick(ax25);  in ax25_output()
204 		if (!ax25->ax25_dev->dama.slave) ax25_kick(ax25);  in ax25_output()
214 static void ax25_send_iframe(ax25_cb *ax25, struct sk_buff *skb, int poll_bit)  in ax25_send_iframe()  argument
223 	if (ax25->modulus == AX25_MODULUS) {  in ax25_send_iframe()
228 		*frame |= (ax25->vr << 5);  in ax25_send_iframe()
229 		*frame |= (ax25->vs << 1);  in ax25_send_iframe()
234 		frame[0] |= (ax25->vs << 1);  in ax25_send_iframe()
236 		frame[1] |= (ax25->vr << 1);  in ax25_send_iframe()
239 	ax25_start_idletimer(ax25);  in ax25_send_iframe()
241 	ax25_transmit_buffer(ax25, skb, AX25_COMMAND);  in ax25_send_iframe()
244 void ax25_kick(ax25_cb *ax25)  in ax25_kick()  argument
250 	if (ax25->state != AX25_STATE_3 && ax25->state != AX25_STATE_4)  in ax25_kick()
253 	if (ax25->condition & AX25_COND_PEER_RX_BUSY)  in ax25_kick()
256 	if (skb_peek(&ax25->write_queue) == NULL)  in ax25_kick()
259 	start = (skb_peek(&ax25->ack_queue) == NULL) ? ax25->va : ax25->vs;  in ax25_kick()
260 	end   = (ax25->va + ax25->window) % ax25->modulus;  in ax25_kick()
275 	skb  = skb_dequeue(&ax25->write_queue);  in ax25_kick()
279 	ax25->vs = start;  in ax25_kick()
283 			skb_queue_head(&ax25->write_queue, skb);  in ax25_kick()
290 		next = (ax25->vs + 1) % ax25->modulus;  in ax25_kick()
298 		switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {  in ax25_kick()
301 			ax25_send_iframe(ax25, skbn, (last) ? AX25_POLLON : AX25_POLLOFF);  in ax25_kick()
306 			ax25_send_iframe(ax25, skbn, AX25_POLLOFF);  in ax25_kick()
311 		ax25->vs = next;  in ax25_kick()
316 		skb_queue_tail(&ax25->ack_queue, skb);  in ax25_kick()
318 	} while (!last && (skb = skb_dequeue(&ax25->write_queue)) != NULL);  in ax25_kick()
320 	ax25->condition &= ~AX25_COND_ACK_PENDING;  in ax25_kick()
322 	if (!ax25_t1timer_running(ax25)) {  in ax25_kick()
323 		ax25_stop_t3timer(ax25);  in ax25_kick()
324 		ax25_calculate_t1(ax25);  in ax25_kick()
325 		ax25_start_t1timer(ax25);  in ax25_kick()
329 void ax25_transmit_buffer(ax25_cb *ax25, struct sk_buff *skb, int type)  in ax25_transmit_buffer()  argument
335 	if (ax25->ax25_dev == NULL) {  in ax25_transmit_buffer()
336 		ax25_disconnect(ax25, ENETUNREACH);  in ax25_transmit_buffer()
340 	headroom = ax25_addr_size(ax25->digipeat);  in ax25_transmit_buffer()
358 	ax25_addr_build(ptr, &ax25->source_addr, &ax25->dest_addr, ax25->digipeat, type, ax25->modulus);  in ax25_transmit_buffer()
360 	ax25_queue_xmit(skb, ax25->ax25_dev->dev);  in ax25_transmit_buffer()
379 int ax25_check_iframes_acked(ax25_cb *ax25, unsigned short nr)  in ax25_check_iframes_acked()  argument
381 	if (ax25->vs == nr) {  in ax25_check_iframes_acked()
382 		ax25_frames_acked(ax25, nr);  in ax25_check_iframes_acked()
383 		ax25_calculate_rtt(ax25);  in ax25_check_iframes_acked()
384 		ax25_stop_t1timer(ax25);  in ax25_check_iframes_acked()
385 		ax25_start_t3timer(ax25);  in ax25_check_iframes_acked()
388 		if (ax25->va != nr) {  in ax25_check_iframes_acked()
389 			ax25_frames_acked(ax25, nr);  in ax25_check_iframes_acked()
390 			ax25_calculate_t1(ax25);  in ax25_check_iframes_acked()
391 			ax25_start_t1timer(ax25);  in ax25_check_iframes_acked()