1 // SPDX-License-Identifier: GPL-2.0-only
39 	cb = conn_info->data_exchange_cb;  in nci_data_exchange_complete()
40 	cb_context = conn_info->data_exchange_cb_context;  in nci_data_exchange_complete()
42 	pr_debug("len %d, err %d\n", skb ? skb->len : 0, err);  in nci_data_exchange_complete()
45 	timer_delete_sync(&ndev->data_timer);  in nci_data_exchange_complete()
46 	clear_bit(NCI_DATA_EXCHANGE_TO, &ndev->flags);  in nci_data_exchange_complete()
52 		pr_err("no rx callback, dropping rx data...\n");  in nci_data_exchange_complete()
59 	clear_bit(NCI_DATA_EXCHANGE, &ndev->flags);  in nci_data_exchange_complete()
62 /* ----------------- NCI TX Data ----------------- */
70 	int plen = skb->len;  in nci_push_data_hdr()
73 	hdr->conn_id = conn_id;  in nci_push_data_hdr()
74 	hdr->rfu = 0;  in nci_push_data_hdr()
75 	hdr->plen = plen;  in nci_push_data_hdr()
87 		return -EPROTO;  in nci_conn_max_data_pkt_payload_size()
89 	return conn_info->max_pkt_payload_len;  in nci_conn_max_data_pkt_payload_size()
97 	int total_len = skb->len;  in nci_queue_tx_data_frags()
98 	const unsigned char *data = skb->data;  in nci_queue_tx_data_frags()
109 		rc = -EPROTO;  in nci_queue_tx_data_frags()
117 			min_t(int, total_len, conn_info->max_pkt_payload_len);  in nci_queue_tx_data_frags()
123 			rc = -ENOMEM;  in nci_queue_tx_data_frags()
139 		total_len -= frag_len;  in nci_queue_tx_data_frags()
146 	spin_lock_irqsave(&ndev->tx_q.lock, flags);  in nci_queue_tx_data_frags()
149 		__skb_queue_tail(&ndev->tx_q, skb_frag);  in nci_queue_tx_data_frags()
151 	spin_unlock_irqrestore(&ndev->tx_q.lock, flags);  in nci_queue_tx_data_frags()
172 	pr_debug("conn_id 0x%x, plen %d\n", conn_id, skb->len);  in nci_send_data()
176 		rc = -EPROTO;  in nci_send_data()
181 	if (skb->len <= conn_info->max_pkt_payload_len) {  in nci_send_data()
185 		skb_queue_tail(&ndev->tx_q, skb);  in nci_send_data()
195 	ndev->cur_conn_id = conn_id;  in nci_send_data()
196 	queue_work(ndev->tx_wq, &ndev->tx_work);  in nci_send_data()
208 /* ----------------- NCI RX Data ----------------- */
212 				 __u8 pbf, __u8 conn_id, __u8 status)  in nci_add_rx_data_frag()  argument
217 	if (status) {  in nci_add_rx_data_frag()
218 		err = status;  in nci_add_rx_data_frag()
222 	if (ndev->rx_data_reassembly) {  in nci_add_rx_data_frag()
223 		reassembly_len = ndev->rx_data_reassembly->len;  in nci_add_rx_data_frag()
227 			pr_err("error adding room for accumulated rx data\n");  in nci_add_rx_data_frag()
232 			kfree_skb(ndev->rx_data_reassembly);  in nci_add_rx_data_frag()
233 			ndev->rx_data_reassembly = NULL;  in nci_add_rx_data_frag()
235 			err = -ENOMEM;  in nci_add_rx_data_frag()
241 		       ndev->rx_data_reassembly->data,  in nci_add_rx_data_frag()
245 		kfree_skb(ndev->rx_data_reassembly);  in nci_add_rx_data_frag()
246 		ndev->rx_data_reassembly = NULL;  in nci_add_rx_data_frag()
251 		ndev->rx_data_reassembly = skb;  in nci_add_rx_data_frag()
256 	if (ndev->nfc_dev->rf_mode == NFC_RF_TARGET) {  in nci_add_rx_data_frag()
258 		err = nfc_tm_data_received(ndev->nfc_dev, skb);  in nci_add_rx_data_frag()
266 /* Rx Data packet */
269 	__u8 pbf = nci_pbf(skb->data);  in nci_rx_data_packet()
270 	__u8 status = 0;  in nci_rx_data_packet()  local
271 	__u8 conn_id = nci_conn_id(skb->data);  in nci_rx_data_packet()
274 	pr_debug("len %d\n", skb->len);  in nci_rx_data_packet()
276 	pr_debug("NCI RX: MT=data, PBF=%d, conn_id=%d, plen=%d\n",  in nci_rx_data_packet()
277 		 nci_pbf(skb->data),  in nci_rx_data_packet()
278 		 nci_conn_id(skb->data),  in nci_rx_data_packet()
279 		 nci_plen(skb->data));  in nci_rx_data_packet()
281 	conn_info = nci_get_conn_info_by_conn_id(ndev, nci_conn_id(skb->data));  in nci_rx_data_packet()
290 	if (ndev->target_active_prot == NFC_PROTO_MIFARE ||  in nci_rx_data_packet()
291 	    ndev->target_active_prot == NFC_PROTO_JEWEL ||  in nci_rx_data_packet()
292 	    ndev->target_active_prot == NFC_PROTO_FELICA ||  in nci_rx_data_packet()
293 	    ndev->target_active_prot == NFC_PROTO_ISO15693) {  in nci_rx_data_packet()
294 		/* frame I/F => remove the status byte */  in nci_rx_data_packet()
295 		pr_debug("frame I/F => remove the status byte\n");  in nci_rx_data_packet()
296 		status = skb->data[skb->len - 1];  in nci_rx_data_packet()
297 		skb_trim(skb, (skb->len - 1));  in nci_rx_data_packet()
300 	nci_add_rx_data_frag(ndev, skb, pbf, conn_id, nci_to_errno(status));  in nci_rx_data_packet()