2 * The NFC Controller Interface is the communication protocol between an
3 * NFC Controller (NFCC) and a Device Host (DH).
4 * This is the HCI over NCI implementation, as specified in the 10.2
5 * section of the NCI 1.1 specification.
7 * Copyright (C) 2014 STMicroelectronics SAS. All rights reserved.
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2
11 * as published by the Free Software Foundation
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, see <http://www.gnu.org/licenses/>.
23 #include <linux/skbuff.h>
26 #include <net/nfc/nci.h>
27 #include <net/nfc/nci_core.h>
28 #include <linux/nfc.h>
38 struct nci_hci_create_pipe_params {
44 struct nci_hci_create_pipe_resp {
52 struct nci_hci_delete_pipe_noti {
56 struct nci_hci_all_pipe_cleared_noti {
60 struct nci_hcp_message {
61 u8 header; /* type -cmd,evt,rsp- + instruction */
65 struct nci_hcp_packet {
66 u8 header; /* cbit+pipe */
67 struct nci_hcp_message message;
70 #define NCI_HCI_ANY_SET_PARAMETER 0x01
71 #define NCI_HCI_ANY_GET_PARAMETER 0x02
72 #define NCI_HCI_ANY_CLOSE_PIPE 0x04
73 #define NCI_HCI_ADM_CLEAR_ALL_PIPE 0x14
75 #define NCI_HFP_NO_CHAINING 0x80
77 #define NCI_NFCEE_ID_HCI 0x80
79 #define NCI_EVT_HOT_PLUG 0x03
81 #define NCI_HCI_ADMIN_PARAM_SESSION_IDENTITY 0x01
82 #define NCI_HCI_ADM_CREATE_PIPE 0x10
83 #define NCI_HCI_ADM_DELETE_PIPE 0x11
86 #define NCI_HCI_HCP_PACKET_HEADER_LEN 1
87 #define NCI_HCI_HCP_MESSAGE_HEADER_LEN 1
88 #define NCI_HCI_HCP_HEADER_LEN 2
91 #define NCI_HCI_HCP_COMMAND 0x00
92 #define NCI_HCI_HCP_EVENT 0x01
93 #define NCI_HCI_HCP_RESPONSE 0x02
95 #define NCI_HCI_ADM_NOTIFY_PIPE_CREATED 0x12
96 #define NCI_HCI_ADM_NOTIFY_PIPE_DELETED 0x13
97 #define NCI_HCI_ADM_NOTIFY_ALL_PIPE_CLEARED 0x15
99 #define NCI_HCI_FRAGMENT 0x7f
100 #define NCI_HCP_HEADER(type, instr) ((((type) & 0x03) << 6) |\
103 #define NCI_HCP_MSG_GET_TYPE(header) ((header & 0xc0) >> 6)
104 #define NCI_HCP_MSG_GET_CMD(header) (header & 0x3f)
105 #define NCI_HCP_MSG_GET_PIPE(header) (header & 0x7f)
107 static int nci_hci_result_to_errno(u8 result)
112 case NCI_HCI_ANY_E_REG_PAR_UNKNOWN:
114 case NCI_HCI_ANY_E_TIMEOUT:
122 static void nci_hci_reset_pipes(struct nci_hci_dev *hdev)
126 for (i = 0; i < NCI_HCI_MAX_PIPES; i++) {
127 hdev->pipes[i].gate = NCI_HCI_INVALID_GATE;
128 hdev->pipes[i].host = NCI_HCI_INVALID_HOST;
130 memset(hdev->gate2pipe, NCI_HCI_INVALID_PIPE, sizeof(hdev->gate2pipe));
133 static void nci_hci_reset_pipes_per_host(struct nci_dev *ndev, u8 host)
137 for (i = 0; i < NCI_HCI_MAX_PIPES; i++) {
138 if (ndev->hci_dev->pipes[i].host == host) {
139 ndev->hci_dev->pipes[i].gate = NCI_HCI_INVALID_GATE;
140 ndev->hci_dev->pipes[i].host = NCI_HCI_INVALID_HOST;
145 /* Fragment HCI data over NCI packet.
146 * NFC Forum NCI 10.2.2 Data Exchange:
147 * The payload of the Data Packets sent on the Logical Connection SHALL be
148 * valid HCP packets, as defined within [ETSI_102622]. Each Data Packet SHALL
149 * contain a single HCP packet. NCI Segmentation and Reassembly SHALL NOT be
150 * applied to Data Messages in either direction. The HCI fragmentation mechanism
151 * is used if required.
153 static int nci_hci_send_data(struct nci_dev *ndev, u8 pipe,
154 const u8 data_type, const u8 *data,
157 struct nci_conn_info *conn_info;
162 conn_info = ndev->hci_dev->conn_info;
167 skb = nci_skb_alloc(ndev, conn_info->max_pkt_payload_len +
168 NCI_DATA_HDR_SIZE, GFP_ATOMIC);
172 skb_reserve(skb, NCI_DATA_HDR_SIZE + 2);
173 *(u8 *)skb_push(skb, 1) = data_type;
176 len = conn_info->max_pkt_payload_len;
178 /* If last packet add NCI_HFP_NO_CHAINING */
179 if (i + conn_info->max_pkt_payload_len -
180 (skb->len + 1) >= data_len) {
181 cb |= NCI_HFP_NO_CHAINING;
184 len = conn_info->max_pkt_payload_len - skb->len - 1;
187 *(u8 *)skb_push(skb, 1) = cb;
190 skb_put_data(skb, data + i, len);
192 r = nci_send_data(ndev, conn_info->conn_id, skb);
199 skb = nci_skb_alloc(ndev,
200 conn_info->max_pkt_payload_len +
201 NCI_DATA_HDR_SIZE, GFP_ATOMIC);
205 skb_reserve(skb, NCI_DATA_HDR_SIZE + 1);
207 } while (i < data_len);
212 static void nci_hci_send_data_req(struct nci_dev *ndev, unsigned long opt)
214 struct nci_data *data = (struct nci_data *)opt;
216 nci_hci_send_data(ndev, data->pipe, data->cmd,
217 data->data, data->data_len);
220 int nci_hci_send_event(struct nci_dev *ndev, u8 gate, u8 event,
221 const u8 *param, size_t param_len)
223 u8 pipe = ndev->hci_dev->gate2pipe[gate];
225 if (pipe == NCI_HCI_INVALID_PIPE)
226 return -EADDRNOTAVAIL;
228 return nci_hci_send_data(ndev, pipe,
229 NCI_HCP_HEADER(NCI_HCI_HCP_EVENT, event),
232 EXPORT_SYMBOL(nci_hci_send_event);
234 int nci_hci_send_cmd(struct nci_dev *ndev, u8 gate, u8 cmd,
235 const u8 *param, size_t param_len,
236 struct sk_buff **skb)
238 struct nci_hcp_message *message;
239 struct nci_conn_info *conn_info;
240 struct nci_data data;
242 u8 pipe = ndev->hci_dev->gate2pipe[gate];
244 if (pipe == NCI_HCI_INVALID_PIPE)
245 return -EADDRNOTAVAIL;
247 conn_info = ndev->hci_dev->conn_info;
251 data.conn_id = conn_info->conn_id;
253 data.cmd = NCI_HCP_HEADER(NCI_HCI_HCP_COMMAND, cmd);
255 data.data_len = param_len;
257 r = nci_request(ndev, nci_hci_send_data_req, (unsigned long)&data,
258 msecs_to_jiffies(NCI_DATA_TIMEOUT));
259 if (r == NCI_STATUS_OK) {
260 message = (struct nci_hcp_message *)conn_info->rx_skb->data;
261 r = nci_hci_result_to_errno(
262 NCI_HCP_MSG_GET_CMD(message->header));
263 skb_pull(conn_info->rx_skb, NCI_HCI_HCP_MESSAGE_HEADER_LEN);
266 *skb = conn_info->rx_skb;
271 EXPORT_SYMBOL(nci_hci_send_cmd);
273 int nci_hci_clear_all_pipes(struct nci_dev *ndev)
277 r = nci_hci_send_cmd(ndev, NCI_HCI_ADMIN_GATE,
278 NCI_HCI_ADM_CLEAR_ALL_PIPE, NULL, 0, NULL);
282 nci_hci_reset_pipes(ndev->hci_dev);
285 EXPORT_SYMBOL(nci_hci_clear_all_pipes);
287 static void nci_hci_event_received(struct nci_dev *ndev, u8 pipe,
288 u8 event, struct sk_buff *skb)
290 if (ndev->ops->hci_event_received)
291 ndev->ops->hci_event_received(ndev, pipe, event, skb);
294 static void nci_hci_cmd_received(struct nci_dev *ndev, u8 pipe,
295 u8 cmd, struct sk_buff *skb)
297 u8 gate = ndev->hci_dev->pipes[pipe].gate;
298 u8 status = NCI_HCI_ANY_OK | ~NCI_HCI_FRAGMENT;
299 u8 dest_gate, new_pipe;
300 struct nci_hci_create_pipe_resp *create_info;
301 struct nci_hci_delete_pipe_noti *delete_info;
302 struct nci_hci_all_pipe_cleared_noti *cleared_info;
304 pr_debug("from gate %x pipe %x cmd %x\n", gate, pipe, cmd);
307 case NCI_HCI_ADM_NOTIFY_PIPE_CREATED:
309 status = NCI_HCI_ANY_E_NOK;
312 create_info = (struct nci_hci_create_pipe_resp *)skb->data;
313 dest_gate = create_info->dest_gate;
314 new_pipe = create_info->pipe;
315 if (new_pipe >= NCI_HCI_MAX_PIPES) {
316 status = NCI_HCI_ANY_E_NOK;
320 /* Save the new created pipe and bind with local gate,
321 * the description for skb->data[3] is destination gate id
322 * but since we received this cmd from host controller, we
323 * are the destination and it is our local gate
325 ndev->hci_dev->gate2pipe[dest_gate] = new_pipe;
326 ndev->hci_dev->pipes[new_pipe].gate = dest_gate;
327 ndev->hci_dev->pipes[new_pipe].host =
328 create_info->src_host;
330 case NCI_HCI_ANY_OPEN_PIPE:
331 /* If the pipe is not created report an error */
332 if (gate == NCI_HCI_INVALID_GATE) {
333 status = NCI_HCI_ANY_E_NOK;
337 case NCI_HCI_ADM_NOTIFY_PIPE_DELETED:
339 status = NCI_HCI_ANY_E_NOK;
342 delete_info = (struct nci_hci_delete_pipe_noti *)skb->data;
343 if (delete_info->pipe >= NCI_HCI_MAX_PIPES) {
344 status = NCI_HCI_ANY_E_NOK;
348 ndev->hci_dev->pipes[delete_info->pipe].gate =
349 NCI_HCI_INVALID_GATE;
350 ndev->hci_dev->pipes[delete_info->pipe].host =
351 NCI_HCI_INVALID_HOST;
353 case NCI_HCI_ADM_NOTIFY_ALL_PIPE_CLEARED:
355 status = NCI_HCI_ANY_E_NOK;
360 (struct nci_hci_all_pipe_cleared_noti *)skb->data;
361 nci_hci_reset_pipes_per_host(ndev, cleared_info->host);
364 pr_debug("Discarded unknown cmd %x to gate %x\n", cmd, gate);
368 if (ndev->ops->hci_cmd_received)
369 ndev->ops->hci_cmd_received(ndev, pipe, cmd, skb);
372 nci_hci_send_data(ndev, pipe, status, NULL, 0);
377 static void nci_hci_resp_received(struct nci_dev *ndev, u8 pipe,
378 u8 result, struct sk_buff *skb)
380 struct nci_conn_info *conn_info;
383 conn_info = ndev->hci_dev->conn_info;
385 status = NCI_STATUS_REJECTED;
389 conn_info->rx_skb = skb;
392 nci_req_complete(ndev, NCI_STATUS_OK);
395 /* Receive hcp message for pipe, with type and cmd.
396 * skb contains optional message data only.
398 static void nci_hci_hcp_message_rx(struct nci_dev *ndev, u8 pipe,
399 u8 type, u8 instruction, struct sk_buff *skb)
402 case NCI_HCI_HCP_RESPONSE:
403 nci_hci_resp_received(ndev, pipe, instruction, skb);
405 case NCI_HCI_HCP_COMMAND:
406 nci_hci_cmd_received(ndev, pipe, instruction, skb);
408 case NCI_HCI_HCP_EVENT:
409 nci_hci_event_received(ndev, pipe, instruction, skb);
412 pr_err("UNKNOWN MSG Type %d, instruction=%d\n",
418 nci_req_complete(ndev, NCI_STATUS_OK);
421 static void nci_hci_msg_rx_work(struct work_struct *work)
423 struct nci_hci_dev *hdev =
424 container_of(work, struct nci_hci_dev, msg_rx_work);
426 struct nci_hcp_message *message;
427 u8 pipe, type, instruction;
429 while ((skb = skb_dequeue(&hdev->msg_rx_queue)) != NULL) {
430 pipe = NCI_HCP_MSG_GET_PIPE(skb->data[0]);
431 skb_pull(skb, NCI_HCI_HCP_PACKET_HEADER_LEN);
432 message = (struct nci_hcp_message *)skb->data;
433 type = NCI_HCP_MSG_GET_TYPE(message->header);
434 instruction = NCI_HCP_MSG_GET_CMD(message->header);
435 skb_pull(skb, NCI_HCI_HCP_MESSAGE_HEADER_LEN);
437 nci_hci_hcp_message_rx(hdev->ndev, pipe,
438 type, instruction, skb);
442 void nci_hci_data_received_cb(void *context,
443 struct sk_buff *skb, int err)
445 struct nci_dev *ndev = (struct nci_dev *)context;
446 struct nci_hcp_packet *packet;
448 struct sk_buff *hcp_skb;
449 struct sk_buff *frag_skb;
455 nci_req_complete(ndev, err);
459 packet = (struct nci_hcp_packet *)skb->data;
460 if ((packet->header & ~NCI_HCI_FRAGMENT) == 0) {
461 skb_queue_tail(&ndev->hci_dev->rx_hcp_frags, skb);
465 /* it's the last fragment. Does it need re-aggregation? */
466 if (skb_queue_len(&ndev->hci_dev->rx_hcp_frags)) {
467 pipe = NCI_HCP_MSG_GET_PIPE(packet->header);
468 skb_queue_tail(&ndev->hci_dev->rx_hcp_frags, skb);
471 skb_queue_walk(&ndev->hci_dev->rx_hcp_frags, frag_skb) {
472 msg_len += (frag_skb->len -
473 NCI_HCI_HCP_PACKET_HEADER_LEN);
476 hcp_skb = nfc_alloc_recv_skb(NCI_HCI_HCP_PACKET_HEADER_LEN +
477 msg_len, GFP_KERNEL);
479 nci_req_complete(ndev, -ENOMEM);
483 skb_put_u8(hcp_skb, pipe);
485 skb_queue_walk(&ndev->hci_dev->rx_hcp_frags, frag_skb) {
486 msg_len = frag_skb->len - NCI_HCI_HCP_PACKET_HEADER_LEN;
487 skb_put_data(hcp_skb,
488 frag_skb->data + NCI_HCI_HCP_PACKET_HEADER_LEN,
492 skb_queue_purge(&ndev->hci_dev->rx_hcp_frags);
494 packet->header &= NCI_HCI_FRAGMENT;
498 /* if this is a response, dispatch immediately to
499 * unblock waiting cmd context. Otherwise, enqueue to dispatch
500 * in separate context where handler can also execute command.
502 packet = (struct nci_hcp_packet *)hcp_skb->data;
503 type = NCI_HCP_MSG_GET_TYPE(packet->message.header);
504 if (type == NCI_HCI_HCP_RESPONSE) {
505 pipe = NCI_HCP_MSG_GET_PIPE(packet->header);
506 skb_pull(hcp_skb, NCI_HCI_HCP_PACKET_HEADER_LEN);
507 nci_hci_hcp_message_rx(ndev, pipe, type,
508 NCI_STATUS_OK, hcp_skb);
510 skb_queue_tail(&ndev->hci_dev->msg_rx_queue, hcp_skb);
511 schedule_work(&ndev->hci_dev->msg_rx_work);
515 int nci_hci_open_pipe(struct nci_dev *ndev, u8 pipe)
517 struct nci_data data;
518 struct nci_conn_info *conn_info;
520 conn_info = ndev->hci_dev->conn_info;
524 data.conn_id = conn_info->conn_id;
526 data.cmd = NCI_HCP_HEADER(NCI_HCI_HCP_COMMAND,
527 NCI_HCI_ANY_OPEN_PIPE);
531 return nci_request(ndev, nci_hci_send_data_req,
532 (unsigned long)&data,
533 msecs_to_jiffies(NCI_DATA_TIMEOUT));
535 EXPORT_SYMBOL(nci_hci_open_pipe);
537 static u8 nci_hci_create_pipe(struct nci_dev *ndev, u8 dest_host,
538 u8 dest_gate, int *result)
542 struct nci_hci_create_pipe_params params;
543 struct nci_hci_create_pipe_resp *resp;
545 pr_debug("gate=%d\n", dest_gate);
547 params.src_gate = NCI_HCI_ADMIN_GATE;
548 params.dest_host = dest_host;
549 params.dest_gate = dest_gate;
551 *result = nci_hci_send_cmd(ndev, NCI_HCI_ADMIN_GATE,
552 NCI_HCI_ADM_CREATE_PIPE,
553 (u8 *)¶ms, sizeof(params), &skb);
555 return NCI_HCI_INVALID_PIPE;
557 resp = (struct nci_hci_create_pipe_resp *)skb->data;
561 pr_debug("pipe created=%d\n", pipe);
566 static int nci_hci_delete_pipe(struct nci_dev *ndev, u8 pipe)
570 return nci_hci_send_cmd(ndev, NCI_HCI_ADMIN_GATE,
571 NCI_HCI_ADM_DELETE_PIPE, &pipe, 1, NULL);
574 int nci_hci_set_param(struct nci_dev *ndev, u8 gate, u8 idx,
575 const u8 *param, size_t param_len)
577 struct nci_hcp_message *message;
578 struct nci_conn_info *conn_info;
579 struct nci_data data;
582 u8 pipe = ndev->hci_dev->gate2pipe[gate];
584 pr_debug("idx=%d to gate %d\n", idx, gate);
586 if (pipe == NCI_HCI_INVALID_PIPE)
587 return -EADDRNOTAVAIL;
589 conn_info = ndev->hci_dev->conn_info;
593 tmp = kmalloc(1 + param_len, GFP_KERNEL);
598 memcpy(tmp + 1, param, param_len);
600 data.conn_id = conn_info->conn_id;
602 data.cmd = NCI_HCP_HEADER(NCI_HCI_HCP_COMMAND,
603 NCI_HCI_ANY_SET_PARAMETER);
605 data.data_len = param_len + 1;
607 r = nci_request(ndev, nci_hci_send_data_req,
608 (unsigned long)&data,
609 msecs_to_jiffies(NCI_DATA_TIMEOUT));
610 if (r == NCI_STATUS_OK) {
611 message = (struct nci_hcp_message *)conn_info->rx_skb->data;
612 r = nci_hci_result_to_errno(
613 NCI_HCP_MSG_GET_CMD(message->header));
614 skb_pull(conn_info->rx_skb, NCI_HCI_HCP_MESSAGE_HEADER_LEN);
620 EXPORT_SYMBOL(nci_hci_set_param);
622 int nci_hci_get_param(struct nci_dev *ndev, u8 gate, u8 idx,
623 struct sk_buff **skb)
625 struct nci_hcp_message *message;
626 struct nci_conn_info *conn_info;
627 struct nci_data data;
629 u8 pipe = ndev->hci_dev->gate2pipe[gate];
631 pr_debug("idx=%d to gate %d\n", idx, gate);
633 if (pipe == NCI_HCI_INVALID_PIPE)
634 return -EADDRNOTAVAIL;
636 conn_info = ndev->hci_dev->conn_info;
640 data.conn_id = conn_info->conn_id;
642 data.cmd = NCI_HCP_HEADER(NCI_HCI_HCP_COMMAND,
643 NCI_HCI_ANY_GET_PARAMETER);
647 r = nci_request(ndev, nci_hci_send_data_req, (unsigned long)&data,
648 msecs_to_jiffies(NCI_DATA_TIMEOUT));
650 if (r == NCI_STATUS_OK) {
651 message = (struct nci_hcp_message *)conn_info->rx_skb->data;
652 r = nci_hci_result_to_errno(
653 NCI_HCP_MSG_GET_CMD(message->header));
654 skb_pull(conn_info->rx_skb, NCI_HCI_HCP_MESSAGE_HEADER_LEN);
657 *skb = conn_info->rx_skb;
662 EXPORT_SYMBOL(nci_hci_get_param);
664 int nci_hci_connect_gate(struct nci_dev *ndev,
665 u8 dest_host, u8 dest_gate, u8 pipe)
667 bool pipe_created = false;
670 if (pipe == NCI_HCI_DO_NOT_OPEN_PIPE)
673 if (ndev->hci_dev->gate2pipe[dest_gate] != NCI_HCI_INVALID_PIPE)
676 if (pipe != NCI_HCI_INVALID_PIPE)
680 case NCI_HCI_LINK_MGMT_GATE:
681 pipe = NCI_HCI_LINK_MGMT_PIPE;
683 case NCI_HCI_ADMIN_GATE:
684 pipe = NCI_HCI_ADMIN_PIPE;
687 pipe = nci_hci_create_pipe(ndev, dest_host, dest_gate, &r);
688 if (pipe == NCI_HCI_INVALID_PIPE)
695 r = nci_hci_open_pipe(ndev, pipe);
698 if (nci_hci_delete_pipe(ndev, pipe) < 0) {
699 /* TODO: Cannot clean by deleting pipe...
700 * -> inconsistent state
707 ndev->hci_dev->pipes[pipe].gate = dest_gate;
708 ndev->hci_dev->pipes[pipe].host = dest_host;
709 ndev->hci_dev->gate2pipe[dest_gate] = pipe;
713 EXPORT_SYMBOL(nci_hci_connect_gate);
715 static int nci_hci_dev_connect_gates(struct nci_dev *ndev,
717 struct nci_hci_gate *gates)
721 while (gate_count--) {
722 r = nci_hci_connect_gate(ndev, gates->dest_host,
723 gates->gate, gates->pipe);
732 int nci_hci_dev_session_init(struct nci_dev *ndev)
734 struct nci_conn_info *conn_info;
738 ndev->hci_dev->count_pipes = 0;
739 ndev->hci_dev->expected_pipes = 0;
741 conn_info = ndev->hci_dev->conn_info;
745 conn_info->data_exchange_cb = nci_hci_data_received_cb;
746 conn_info->data_exchange_cb_context = ndev;
748 nci_hci_reset_pipes(ndev->hci_dev);
750 if (ndev->hci_dev->init_data.gates[0].gate != NCI_HCI_ADMIN_GATE)
753 r = nci_hci_connect_gate(ndev,
754 ndev->hci_dev->init_data.gates[0].dest_host,
755 ndev->hci_dev->init_data.gates[0].gate,
756 ndev->hci_dev->init_data.gates[0].pipe);
760 r = nci_hci_get_param(ndev, NCI_HCI_ADMIN_GATE,
761 NCI_HCI_ADMIN_PARAM_SESSION_IDENTITY, &skb);
766 skb->len == strlen(ndev->hci_dev->init_data.session_id) &&
767 !memcmp(ndev->hci_dev->init_data.session_id, skb->data, skb->len) &&
768 ndev->ops->hci_load_session) {
769 /* Restore gate<->pipe table from some proprietary location. */
770 r = ndev->ops->hci_load_session(ndev);
772 r = nci_hci_clear_all_pipes(ndev);
776 r = nci_hci_dev_connect_gates(ndev,
777 ndev->hci_dev->init_data.gate_count,
778 ndev->hci_dev->init_data.gates);
782 r = nci_hci_set_param(ndev, NCI_HCI_ADMIN_GATE,
783 NCI_HCI_ADMIN_PARAM_SESSION_IDENTITY,
784 ndev->hci_dev->init_data.session_id,
785 strlen(ndev->hci_dev->init_data.session_id));
793 EXPORT_SYMBOL(nci_hci_dev_session_init);
795 struct nci_hci_dev *nci_hci_allocate(struct nci_dev *ndev)
797 struct nci_hci_dev *hdev;
799 hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
803 skb_queue_head_init(&hdev->rx_hcp_frags);
804 INIT_WORK(&hdev->msg_rx_work, nci_hci_msg_rx_work);
805 skb_queue_head_init(&hdev->msg_rx_queue);
811 void nci_hci_deallocate(struct nci_dev *ndev)
813 kfree(ndev->hci_dev);