112 #define SHDLC_DUMP_SKB(info, skb)				  \  argument
116 		       16, 1, skb->data, skb->len, 0);		  \
140 	struct sk_buff *skb;  in llc_shdlc_alloc_skb()  local
142 	skb = alloc_skb(shdlc->tx_headroom + SHDLC_LLC_HEAD_ROOM +  in llc_shdlc_alloc_skb()
144 	if (skb)  in llc_shdlc_alloc_skb()
145 		skb_reserve(skb, shdlc->tx_headroom + SHDLC_LLC_HEAD_ROOM);  in llc_shdlc_alloc_skb()
147 	return skb;  in llc_shdlc_alloc_skb()
155 	struct sk_buff *skb;  in llc_shdlc_send_s_frame()  local
159 	skb = llc_shdlc_alloc_skb(shdlc, 0);  in llc_shdlc_send_s_frame()
160 	if (skb == NULL)  in llc_shdlc_send_s_frame()
163 	*skb_push(skb, 1) = SHDLC_CONTROL_HEAD_S | (sframe_type << 3) | nr;  in llc_shdlc_send_s_frame()
165 	r = shdlc->xmit_to_drv(shdlc->hdev, skb);  in llc_shdlc_send_s_frame()
167 	kfree_skb(skb);  in llc_shdlc_send_s_frame()
174 				  struct sk_buff *skb,  in llc_shdlc_send_u_frame()  argument
181 	*skb_push(skb, 1) = SHDLC_CONTROL_HEAD_U | uframe_modifier;  in llc_shdlc_send_u_frame()
183 	r = shdlc->xmit_to_drv(shdlc->hdev, skb);  in llc_shdlc_send_u_frame()
185 	kfree_skb(skb);  in llc_shdlc_send_u_frame()
196 	struct sk_buff *skb;  in llc_shdlc_reset_t2()  local
204 		skb = skb_dequeue(&shdlc->ack_pending_q);  in llc_shdlc_reset_t2()
205 		kfree_skb(skb);  in llc_shdlc_reset_t2()
219 		skb = skb_peek(&shdlc->ack_pending_q);  in llc_shdlc_reset_t2()
221 		mod_timer(&shdlc->t2_timer, *(unsigned long *)skb->cb +  in llc_shdlc_reset_t2()
235 				  struct sk_buff *skb, int ns, int nr)  in llc_shdlc_rcv_i_frame()  argument
257 	if (skb->len) {  in llc_shdlc_rcv_i_frame()
258 		shdlc->rcv_to_hci(shdlc->hdev, skb);  in llc_shdlc_rcv_i_frame()
259 		skb = NULL;  in llc_shdlc_rcv_i_frame()
271 	kfree_skb(skb);  in llc_shdlc_rcv_i_frame()
286 	struct sk_buff *skb;  in llc_shdlc_requeue_ack_pending()  local
290 	while ((skb = skb_dequeue_tail(&shdlc->ack_pending_q))) {  in llc_shdlc_requeue_ack_pending()
291 		skb_pull(skb, 1);	/* remove control field */  in llc_shdlc_requeue_ack_pending()
292 		skb_queue_head(&shdlc->send_q, skb);  in llc_shdlc_requeue_ack_pending()
299 	struct sk_buff *skb;  in llc_shdlc_rcv_rej()  local
312 				skb = skb_dequeue(&shdlc->ack_pending_q);  in llc_shdlc_rcv_rej()
313 				kfree_skb(skb);  in llc_shdlc_rcv_rej()
325 	struct sk_buff *skb;  in llc_shdlc_rcv_s_frame()  local
336 				skb = llc_shdlc_alloc_skb(shdlc, 0);  in llc_shdlc_rcv_s_frame()
337 				if (skb)  in llc_shdlc_rcv_s_frame()
338 					skb_queue_tail(&shdlc->send_q, skb);  in llc_shdlc_rcv_s_frame()
377 	struct sk_buff *skb;  in llc_shdlc_connect_initiate()  local
381 	skb = llc_shdlc_alloc_skb(shdlc, 2);  in llc_shdlc_connect_initiate()
382 	if (skb == NULL)  in llc_shdlc_connect_initiate()
385 	*skb_put(skb, 1) = SHDLC_MAX_WINDOW;  in llc_shdlc_connect_initiate()
386 	*skb_put(skb, 1) = SHDLC_SREJ_SUPPORT ? 1 : 0;  in llc_shdlc_connect_initiate()
388 	return llc_shdlc_send_u_frame(shdlc, skb, U_FRAME_RSET);  in llc_shdlc_connect_initiate()
393 	struct sk_buff *skb;  in llc_shdlc_connect_send_ua()  local
397 	skb = llc_shdlc_alloc_skb(shdlc, 0);  in llc_shdlc_connect_send_ua()
398 	if (skb == NULL)  in llc_shdlc_connect_send_ua()
401 	return llc_shdlc_send_u_frame(shdlc, skb, U_FRAME_UA);  in llc_shdlc_connect_send_ua()
405 				  struct sk_buff *skb,  in llc_shdlc_rcv_u_frame()  argument
423 			if (skb->len > 0)  in llc_shdlc_rcv_u_frame()
424 				w = skb->data[0];  in llc_shdlc_rcv_u_frame()
426 			if (skb->len > 1)  in llc_shdlc_rcv_u_frame()
427 				srej_support = skb->data[1] & 0x01 ? true :  in llc_shdlc_rcv_u_frame()
467 	kfree_skb(skb);  in llc_shdlc_rcv_u_frame()
472 	struct sk_buff *skb;  in llc_shdlc_handle_rcv_queue()  local
482 	while ((skb = skb_dequeue(&shdlc->rcv_q)) != NULL) {  in llc_shdlc_handle_rcv_queue()
483 		control = skb->data[0];  in llc_shdlc_handle_rcv_queue()
484 		skb_pull(skb, 1);  in llc_shdlc_handle_rcv_queue()
493 			llc_shdlc_rcv_i_frame(shdlc, skb, ns, nr);  in llc_shdlc_handle_rcv_queue()
502 			kfree_skb(skb);  in llc_shdlc_handle_rcv_queue()
506 			llc_shdlc_rcv_u_frame(shdlc, skb, u_frame_modifier);  in llc_shdlc_handle_rcv_queue()
510 			kfree_skb(skb);  in llc_shdlc_handle_rcv_queue()
531 	struct sk_buff *skb;  in llc_shdlc_handle_send_queue()  local
552 		skb = skb_dequeue(&shdlc->send_q);  in llc_shdlc_handle_send_queue()
554 		*skb_push(skb, 1) = SHDLC_CONTROL_HEAD_I | (shdlc->ns << 3) |  in llc_shdlc_handle_send_queue()
559 		SHDLC_DUMP_SKB("shdlc frame written", skb);  in llc_shdlc_handle_send_queue()
561 		r = shdlc->xmit_to_drv(shdlc->hdev, skb);  in llc_shdlc_handle_send_queue()
570 		*(unsigned long *)skb->cb = time_sent;  in llc_shdlc_handle_send_queue()
572 		skb_queue_tail(&shdlc->ack_pending_q, skb);  in llc_shdlc_handle_send_queue()
736 static void llc_shdlc_recv_frame(struct llc_shdlc *shdlc, struct sk_buff *skb)  in llc_shdlc_recv_frame()  argument
738 	if (skb == NULL) {  in llc_shdlc_recv_frame()
742 		SHDLC_DUMP_SKB("incoming frame", skb);  in llc_shdlc_recv_frame()
743 		skb_queue_tail(&shdlc->rcv_q, skb);  in llc_shdlc_recv_frame()
824 static void llc_shdlc_rcv_from_drv(struct nfc_llc *llc, struct sk_buff *skb)  in llc_shdlc_rcv_from_drv()  argument
828 	llc_shdlc_recv_frame(shdlc, skb);  in llc_shdlc_rcv_from_drv()
831 static int llc_shdlc_xmit_from_hci(struct nfc_llc *llc, struct sk_buff *skb)  in llc_shdlc_xmit_from_hci()  argument
835 	skb_queue_tail(&shdlc->send_q, skb);  in llc_shdlc_xmit_from_hci()