63 	ax25_cb *ax25;  in ax25_send_frame()  local
79 	if ((ax25 = ax25_find_cb(src, dest, digi, dev)) != NULL) {  in ax25_send_frame()
80 		ax25_output(ax25, paclen, skb);  in ax25_send_frame()
81 		return ax25;		/* It already existed */  in ax25_send_frame()
87 	if ((ax25 = ax25_create_cb()) == NULL)  in ax25_send_frame()
90 	ax25_fillin_cb(ax25, ax25_dev);  in ax25_send_frame()
92 	ax25->source_addr = *src;  in ax25_send_frame()
93 	ax25->dest_addr   = *dest;  in ax25_send_frame()
96 		if ((ax25->digipeat = kmalloc(sizeof(ax25_digi), GFP_ATOMIC)) == NULL) {  in ax25_send_frame()
97 			ax25_free_cb(ax25);  in ax25_send_frame()
100 		memcpy(ax25->digipeat, digi, sizeof(ax25_digi));  in ax25_send_frame()
103 	switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {  in ax25_send_frame()
106 			ax25_std_establish_data_link(ax25);  in ax25_send_frame()
112 				ax25_ds_establish_data_link(ax25);  in ax25_send_frame()
114 				ax25_std_establish_data_link(ax25);  in ax25_send_frame()
119 	ax25_insert_socket(ax25);  in ax25_send_frame()
121 	ax25->state = AX25_STATE_1;  in ax25_send_frame()
123 	ax25_start_heartbeat(ax25);  in ax25_send_frame()
125 	ax25_output(ax25, paclen, skb);  in ax25_send_frame()
127 	return ax25;			/* We had to create it */  in ax25_send_frame()
136 void ax25_output(ax25_cb *ax25, int paclen, struct sk_buff *skb)  in ax25_output()  argument
196 			skb_queue_tail(&ax25->write_queue, skbn); /* Throw it on the queue */  in ax25_output()
201 		skb_queue_tail(&ax25->write_queue, skb);	  /* Throw it on the queue */  in ax25_output()
204 	switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {  in ax25_output()
207 			ax25_kick(ax25);  in ax25_output()
216 			if (!ax25->ax25_dev->dama.slave) ax25_kick(ax25);  in ax25_output()
226 static void ax25_send_iframe(ax25_cb *ax25, struct sk_buff *skb, int poll_bit)  in ax25_send_iframe()  argument
235 	if (ax25->modulus == AX25_MODULUS) {  in ax25_send_iframe()
240 		*frame |= (ax25->vr << 5);  in ax25_send_iframe()
241 		*frame |= (ax25->vs << 1);  in ax25_send_iframe()
246 		frame[0] |= (ax25->vs << 1);  in ax25_send_iframe()
248 		frame[1] |= (ax25->vr << 1);  in ax25_send_iframe()
251 	ax25_start_idletimer(ax25);  in ax25_send_iframe()
253 	ax25_transmit_buffer(ax25, skb, AX25_COMMAND);  in ax25_send_iframe()
256 void ax25_kick(ax25_cb *ax25)  in ax25_kick()  argument
262 	if (ax25->state != AX25_STATE_3 && ax25->state != AX25_STATE_4)  in ax25_kick()
265 	if (ax25->condition & AX25_COND_PEER_RX_BUSY)  in ax25_kick()
268 	if (skb_peek(&ax25->write_queue) == NULL)  in ax25_kick()
271 	start = (skb_peek(&ax25->ack_queue) == NULL) ? ax25->va : ax25->vs;  in ax25_kick()
272 	end   = (ax25->va + ax25->window) % ax25->modulus;  in ax25_kick()
277 	ax25->vs = start;  in ax25_kick()
288 	skb  = skb_dequeue(&ax25->write_queue);  in ax25_kick()
292 			skb_queue_head(&ax25->write_queue, skb);  in ax25_kick()
299 		next = (ax25->vs + 1) % ax25->modulus;  in ax25_kick()
307 		switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {  in ax25_kick()
310 				ax25_send_iframe(ax25, skbn, (last) ? AX25_POLLON : AX25_POLLOFF);  in ax25_kick()
315 				ax25_send_iframe(ax25, skbn, AX25_POLLOFF);  in ax25_kick()
320 		ax25->vs = next;  in ax25_kick()
325 		skb_queue_tail(&ax25->ack_queue, skb);  in ax25_kick()
327 	} while (!last && (skb = skb_dequeue(&ax25->write_queue)) != NULL);  in ax25_kick()
329 	ax25->condition &= ~AX25_COND_ACK_PENDING;  in ax25_kick()
331 	if (!ax25_t1timer_running(ax25)) {  in ax25_kick()
332 		ax25_stop_t3timer(ax25);  in ax25_kick()
333 		ax25_calculate_t1(ax25);  in ax25_kick()
334 		ax25_start_t1timer(ax25);  in ax25_kick()
338 void ax25_transmit_buffer(ax25_cb *ax25, struct sk_buff *skb, int type)  in ax25_transmit_buffer()  argument
344 	if (ax25->ax25_dev == NULL) {  in ax25_transmit_buffer()
345 		ax25_disconnect(ax25, ENETUNREACH);  in ax25_transmit_buffer()
349 	headroom = ax25_addr_size(ax25->digipeat);  in ax25_transmit_buffer()
367 	ax25_addr_build(ptr, &ax25->source_addr, &ax25->dest_addr, ax25->digipeat, type, ax25->modulus);  in ax25_transmit_buffer()
369 	skb->dev = ax25->ax25_dev->dev;  in ax25_transmit_buffer()
391 int ax25_check_iframes_acked(ax25_cb *ax25, unsigned short nr)  in ax25_check_iframes_acked()  argument
393 	if (ax25->vs == nr) {  in ax25_check_iframes_acked()
394 		ax25_frames_acked(ax25, nr);  in ax25_check_iframes_acked()
395 		ax25_calculate_rtt(ax25);  in ax25_check_iframes_acked()
396 		ax25_stop_t1timer(ax25);  in ax25_check_iframes_acked()
397 		ax25_start_t3timer(ax25);  in ax25_check_iframes_acked()
400 		if (ax25->va != nr) {  in ax25_check_iframes_acked()
401 			ax25_frames_acked(ax25, nr);  in ax25_check_iframes_acked()
402 			ax25_calculate_t1(ax25);  in ax25_check_iframes_acked()
403 			ax25_start_t1timer(ax25);  in ax25_check_iframes_acked()