35 	ax25_cb *ax25;  in ax25_send_frame()  local
51 	if ((ax25 = ax25_find_cb(src, dest, digi, dev)) != NULL) {  in ax25_send_frame()
52 		ax25_output(ax25, paclen, skb);  in ax25_send_frame()
53 		return ax25;		/* It already existed */  in ax25_send_frame()
59 	if ((ax25 = ax25_create_cb()) == NULL)  in ax25_send_frame()
62 	ax25_fillin_cb(ax25, ax25_dev);  in ax25_send_frame()
64 	ax25->source_addr = *src;  in ax25_send_frame()
65 	ax25->dest_addr   = *dest;  in ax25_send_frame()
68 		ax25->digipeat = kmemdup(digi, sizeof(*digi), GFP_ATOMIC);  in ax25_send_frame()
69 		if (ax25->digipeat == NULL) {  in ax25_send_frame()
70 			ax25_cb_put(ax25);  in ax25_send_frame()
75 	switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {  in ax25_send_frame()
78 		ax25_std_establish_data_link(ax25);  in ax25_send_frame()
84 			ax25_ds_establish_data_link(ax25);  in ax25_send_frame()
86 			ax25_std_establish_data_link(ax25);  in ax25_send_frame()
95 	ax25_cb_hold(ax25);  in ax25_send_frame()
97 	ax25_cb_add(ax25);  in ax25_send_frame()
99 	ax25->state = AX25_STATE_1;  in ax25_send_frame()
101 	ax25_start_heartbeat(ax25);  in ax25_send_frame()
103 	ax25_output(ax25, paclen, skb);  in ax25_send_frame()
105 	return ax25;			/* We had to create it */  in ax25_send_frame()
116 void ax25_output(ax25_cb *ax25, int paclen, struct sk_buff *skb)  in ax25_output()  argument
181 			skb_queue_tail(&ax25->write_queue, skbn); /* Throw it on the queue */  in ax25_output()
186 		skb_queue_tail(&ax25->write_queue, skb);	  /* Throw it on the queue */  in ax25_output()
189 	switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {  in ax25_output()
192 		ax25_kick(ax25);  in ax25_output()
201 		if (!ax25->ax25_dev->dama.slave) ax25_kick(ax25);  in ax25_output()
211 static void ax25_send_iframe(ax25_cb *ax25, struct sk_buff *skb, int poll_bit)  in ax25_send_iframe()  argument
220 	if (ax25->modulus == AX25_MODULUS) {  in ax25_send_iframe()
225 		*frame |= (ax25->vr << 5);  in ax25_send_iframe()
226 		*frame |= (ax25->vs << 1);  in ax25_send_iframe()
231 		frame[0] |= (ax25->vs << 1);  in ax25_send_iframe()
233 		frame[1] |= (ax25->vr << 1);  in ax25_send_iframe()
236 	ax25_start_idletimer(ax25);  in ax25_send_iframe()
238 	ax25_transmit_buffer(ax25, skb, AX25_COMMAND);  in ax25_send_iframe()
241 void ax25_kick(ax25_cb *ax25)  in ax25_kick()  argument
247 	if (ax25->state != AX25_STATE_3 && ax25->state != AX25_STATE_4)  in ax25_kick()
250 	if (ax25->condition & AX25_COND_PEER_RX_BUSY)  in ax25_kick()
253 	if (skb_peek(&ax25->write_queue) == NULL)  in ax25_kick()
256 	start = (skb_peek(&ax25->ack_queue) == NULL) ? ax25->va : ax25->vs;  in ax25_kick()
257 	end   = (ax25->va + ax25->window) % ax25->modulus;  in ax25_kick()
272 	skb  = skb_dequeue(&ax25->write_queue);  in ax25_kick()
276 	ax25->vs = start;  in ax25_kick()
280 			skb_queue_head(&ax25->write_queue, skb);  in ax25_kick()
287 		next = (ax25->vs + 1) % ax25->modulus;  in ax25_kick()
295 		switch (ax25->ax25_dev->values[AX25_VALUES_PROTOCOL]) {  in ax25_kick()
298 			ax25_send_iframe(ax25, skbn, (last) ? AX25_POLLON : AX25_POLLOFF);  in ax25_kick()
303 			ax25_send_iframe(ax25, skbn, AX25_POLLOFF);  in ax25_kick()
308 		ax25->vs = next;  in ax25_kick()
313 		skb_queue_tail(&ax25->ack_queue, skb);  in ax25_kick()
315 	} while (!last && (skb = skb_dequeue(&ax25->write_queue)) != NULL);  in ax25_kick()
317 	ax25->condition &= ~AX25_COND_ACK_PENDING;  in ax25_kick()
319 	if (!ax25_t1timer_running(ax25)) {  in ax25_kick()
320 		ax25_stop_t3timer(ax25);  in ax25_kick()
321 		ax25_calculate_t1(ax25);  in ax25_kick()
322 		ax25_start_t1timer(ax25);  in ax25_kick()
326 void ax25_transmit_buffer(ax25_cb *ax25, struct sk_buff *skb, int type)  in ax25_transmit_buffer()  argument
331 	if (ax25->ax25_dev == NULL) {  in ax25_transmit_buffer()
332 		ax25_disconnect(ax25, ENETUNREACH);  in ax25_transmit_buffer()
336 	headroom = ax25_addr_size(ax25->digipeat);  in ax25_transmit_buffer()
348 	ax25_addr_build(ptr, &ax25->source_addr, &ax25->dest_addr, ax25->digipeat, type, ax25->modulus);  in ax25_transmit_buffer()
350 	ax25_queue_xmit(skb, ax25->ax25_dev->dev);  in ax25_transmit_buffer()
369 int ax25_check_iframes_acked(ax25_cb *ax25, unsigned short nr)  in ax25_check_iframes_acked()  argument
371 	if (ax25->vs == nr) {  in ax25_check_iframes_acked()
372 		ax25_frames_acked(ax25, nr);  in ax25_check_iframes_acked()
373 		ax25_calculate_rtt(ax25);  in ax25_check_iframes_acked()
374 		ax25_stop_t1timer(ax25);  in ax25_check_iframes_acked()
375 		ax25_start_t3timer(ax25);  in ax25_check_iframes_acked()
378 		if (ax25->va != nr) {  in ax25_check_iframes_acked()
379 			ax25_frames_acked(ax25, nr);  in ax25_check_iframes_acked()
380 			ax25_calculate_t1(ax25);  in ax25_check_iframes_acked()
381 			ax25_start_t1timer(ax25);  in ax25_check_iframes_acked()