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1/*
2 * The NFC Controller Interface is the communication protocol between an
3 * NFC Controller (NFCC) and a Device Host (DH).
4 *
5 * Copyright (C) 2011 Texas Instruments, Inc.
6 *
7 * Written by Ilan Elias <ilane@ti.com>
8 *
9 * Acknowledgements:
10 * This file is based on hci_event.c, which was written
11 * by Maxim Krasnyansky.
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License version 2
15 * as published by the Free Software Foundation
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, see <http://www.gnu.org/licenses/>.
24 *
25 */
26
27#define pr_fmt(fmt) KBUILD_MODNAME ": %s: " fmt, __func__
28
29#include <linux/types.h>
30#include <linux/interrupt.h>
31#include <linux/bitops.h>
32#include <linux/skbuff.h>
33
34#include "../nfc.h"
35#include <net/nfc/nci.h>
36#include <net/nfc/nci_core.h>
37
38/* Handle NCI Response packets */
39
40static void nci_core_reset_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb)
41{
42 struct nci_core_reset_rsp *rsp = (void *) skb->data;
43
44 pr_debug("status 0x%x\n", rsp->status);
45
46 if (rsp->status == NCI_STATUS_OK) {
47 ndev->nci_ver = rsp->nci_ver;
48 pr_debug("nci_ver 0x%x, config_status 0x%x\n",
49 rsp->nci_ver, rsp->config_status);
50 }
51
52 nci_req_complete(ndev, rsp->status);
53}
54
55static void nci_core_init_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb)
56{
57 struct nci_core_init_rsp_1 *rsp_1 = (void *) skb->data;
58 struct nci_core_init_rsp_2 *rsp_2;
59
60 pr_debug("status 0x%x\n", rsp_1->status);
61
62 if (rsp_1->status != NCI_STATUS_OK)
63 goto exit;
64
65 ndev->nfcc_features = __le32_to_cpu(rsp_1->nfcc_features);
66 ndev->num_supported_rf_interfaces = rsp_1->num_supported_rf_interfaces;
67
68 if (ndev->num_supported_rf_interfaces >
69 NCI_MAX_SUPPORTED_RF_INTERFACES) {
70 ndev->num_supported_rf_interfaces =
71 NCI_MAX_SUPPORTED_RF_INTERFACES;
72 }
73
74 memcpy(ndev->supported_rf_interfaces,
75 rsp_1->supported_rf_interfaces,
76 ndev->num_supported_rf_interfaces);
77
78 rsp_2 = (void *) (skb->data + 6 + rsp_1->num_supported_rf_interfaces);
79
80 ndev->max_logical_connections = rsp_2->max_logical_connections;
81 ndev->max_routing_table_size =
82 __le16_to_cpu(rsp_2->max_routing_table_size);
83 ndev->max_ctrl_pkt_payload_len =
84 rsp_2->max_ctrl_pkt_payload_len;
85 ndev->max_size_for_large_params =
86 __le16_to_cpu(rsp_2->max_size_for_large_params);
87 ndev->manufact_id =
88 rsp_2->manufact_id;
89 ndev->manufact_specific_info =
90 __le32_to_cpu(rsp_2->manufact_specific_info);
91
92 pr_debug("nfcc_features 0x%x\n",
93 ndev->nfcc_features);
94 pr_debug("num_supported_rf_interfaces %d\n",
95 ndev->num_supported_rf_interfaces);
96 pr_debug("supported_rf_interfaces[0] 0x%x\n",
97 ndev->supported_rf_interfaces[0]);
98 pr_debug("supported_rf_interfaces[1] 0x%x\n",
99 ndev->supported_rf_interfaces[1]);
100 pr_debug("supported_rf_interfaces[2] 0x%x\n",
101 ndev->supported_rf_interfaces[2]);
102 pr_debug("supported_rf_interfaces[3] 0x%x\n",
103 ndev->supported_rf_interfaces[3]);
104 pr_debug("max_logical_connections %d\n",
105 ndev->max_logical_connections);
106 pr_debug("max_routing_table_size %d\n",
107 ndev->max_routing_table_size);
108 pr_debug("max_ctrl_pkt_payload_len %d\n",
109 ndev->max_ctrl_pkt_payload_len);
110 pr_debug("max_size_for_large_params %d\n",
111 ndev->max_size_for_large_params);
112 pr_debug("manufact_id 0x%x\n",
113 ndev->manufact_id);
114 pr_debug("manufact_specific_info 0x%x\n",
115 ndev->manufact_specific_info);
116
117exit:
118 nci_req_complete(ndev, rsp_1->status);
119}
120
121static void nci_core_set_config_rsp_packet(struct nci_dev *ndev,
122 struct sk_buff *skb)
123{
124 struct nci_core_set_config_rsp *rsp = (void *) skb->data;
125
126 pr_debug("status 0x%x\n", rsp->status);
127
128 nci_req_complete(ndev, rsp->status);
129}
130
131static void nci_rf_disc_map_rsp_packet(struct nci_dev *ndev,
132 struct sk_buff *skb)
133{
134 __u8 status = skb->data[0];
135
136 pr_debug("status 0x%x\n", status);
137
138 nci_req_complete(ndev, status);
139}
140
141static void nci_rf_disc_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb)
142{
143 struct nci_conn_info *conn_info;
144 __u8 status = skb->data[0];
145
146 pr_debug("status 0x%x\n", status);
147
148 if (status == NCI_STATUS_OK) {
149 atomic_set(&ndev->state, NCI_DISCOVERY);
150
151 conn_info = ndev->rf_conn_info;
152 if (!conn_info) {
153 conn_info = devm_kzalloc(&ndev->nfc_dev->dev,
154 sizeof(struct nci_conn_info),
155 GFP_KERNEL);
156 if (!conn_info) {
157 status = NCI_STATUS_REJECTED;
158 goto exit;
159 }
160 conn_info->conn_id = NCI_STATIC_RF_CONN_ID;
161 INIT_LIST_HEAD(&conn_info->list);
162 list_add(&conn_info->list, &ndev->conn_info_list);
163 ndev->rf_conn_info = conn_info;
164 }
165 }
166
167exit:
168 nci_req_complete(ndev, status);
169}
170
171static void nci_rf_disc_select_rsp_packet(struct nci_dev *ndev,
172 struct sk_buff *skb)
173{
174 __u8 status = skb->data[0];
175
176 pr_debug("status 0x%x\n", status);
177
178 /* Complete the request on intf_activated_ntf or generic_error_ntf */
179 if (status != NCI_STATUS_OK)
180 nci_req_complete(ndev, status);
181}
182
183static void nci_rf_deactivate_rsp_packet(struct nci_dev *ndev,
184 struct sk_buff *skb)
185{
186 __u8 status = skb->data[0];
187
188 pr_debug("status 0x%x\n", status);
189
190 /* If target was active, complete the request only in deactivate_ntf */
191 if ((status != NCI_STATUS_OK) ||
192 (atomic_read(&ndev->state) != NCI_POLL_ACTIVE)) {
193 nci_clear_target_list(ndev);
194 atomic_set(&ndev->state, NCI_IDLE);
195 nci_req_complete(ndev, status);
196 }
197}
198
199static void nci_nfcee_discover_rsp_packet(struct nci_dev *ndev,
200 struct sk_buff *skb)
201{
202 struct nci_nfcee_discover_rsp *discover_rsp;
203
204 if (skb->len != 2) {
205 nci_req_complete(ndev, NCI_STATUS_NFCEE_PROTOCOL_ERROR);
206 return;
207 }
208
209 discover_rsp = (struct nci_nfcee_discover_rsp *)skb->data;
210
211 if (discover_rsp->status != NCI_STATUS_OK ||
212 discover_rsp->num_nfcee == 0)
213 nci_req_complete(ndev, discover_rsp->status);
214}
215
216static void nci_nfcee_mode_set_rsp_packet(struct nci_dev *ndev,
217 struct sk_buff *skb)
218{
219 __u8 status = skb->data[0];
220
221 pr_debug("status 0x%x\n", status);
222 nci_req_complete(ndev, status);
223}
224
225static void nci_core_conn_create_rsp_packet(struct nci_dev *ndev,
226 struct sk_buff *skb)
227{
228 __u8 status = skb->data[0];
229 struct nci_conn_info *conn_info;
230 struct nci_core_conn_create_rsp *rsp;
231
232 pr_debug("status 0x%x\n", status);
233
234 if (status == NCI_STATUS_OK) {
235 rsp = (struct nci_core_conn_create_rsp *)skb->data;
236
237 conn_info = devm_kzalloc(&ndev->nfc_dev->dev,
238 sizeof(*conn_info), GFP_KERNEL);
239 if (!conn_info) {
240 status = NCI_STATUS_REJECTED;
241 goto exit;
242 }
243
244 conn_info->id = ndev->cur_id;
245 conn_info->conn_id = rsp->conn_id;
246
247 /* Note: data_exchange_cb and data_exchange_cb_context need to
248 * be specify out of nci_core_conn_create_rsp_packet
249 */
250
251 INIT_LIST_HEAD(&conn_info->list);
252 list_add(&conn_info->list, &ndev->conn_info_list);
253
254 if (ndev->cur_id == ndev->hci_dev->nfcee_id)
255 ndev->hci_dev->conn_info = conn_info;
256
257 conn_info->conn_id = rsp->conn_id;
258 conn_info->max_pkt_payload_len = rsp->max_ctrl_pkt_payload_len;
259 atomic_set(&conn_info->credits_cnt, rsp->credits_cnt);
260 }
261
262exit:
263 nci_req_complete(ndev, status);
264}
265
266static void nci_core_conn_close_rsp_packet(struct nci_dev *ndev,
267 struct sk_buff *skb)
268{
269 struct nci_conn_info *conn_info;
270 __u8 status = skb->data[0];
271
272 pr_debug("status 0x%x\n", status);
273 if (status == NCI_STATUS_OK) {
274 conn_info = nci_get_conn_info_by_conn_id(ndev, ndev->cur_id);
275 if (conn_info) {
276 list_del(&conn_info->list);
277 devm_kfree(&ndev->nfc_dev->dev, conn_info);
278 }
279 }
280 nci_req_complete(ndev, status);
281}
282
283void nci_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb)
284{
285 __u16 rsp_opcode = nci_opcode(skb->data);
286
287 /* we got a rsp, stop the cmd timer */
288 del_timer(&ndev->cmd_timer);
289
290 pr_debug("NCI RX: MT=rsp, PBF=%d, GID=0x%x, OID=0x%x, plen=%d\n",
291 nci_pbf(skb->data),
292 nci_opcode_gid(rsp_opcode),
293 nci_opcode_oid(rsp_opcode),
294 nci_plen(skb->data));
295
296 /* strip the nci control header */
297 skb_pull(skb, NCI_CTRL_HDR_SIZE);
298
299 if (nci_opcode_gid(rsp_opcode) == NCI_GID_PROPRIETARY) {
300 if (nci_prop_rsp_packet(ndev, rsp_opcode, skb) == -ENOTSUPP) {
301 pr_err("unsupported rsp opcode 0x%x\n",
302 rsp_opcode);
303 }
304
305 goto end;
306 }
307
308 switch (rsp_opcode) {
309 case NCI_OP_CORE_RESET_RSP:
310 nci_core_reset_rsp_packet(ndev, skb);
311 break;
312
313 case NCI_OP_CORE_INIT_RSP:
314 nci_core_init_rsp_packet(ndev, skb);
315 break;
316
317 case NCI_OP_CORE_SET_CONFIG_RSP:
318 nci_core_set_config_rsp_packet(ndev, skb);
319 break;
320
321 case NCI_OP_CORE_CONN_CREATE_RSP:
322 nci_core_conn_create_rsp_packet(ndev, skb);
323 break;
324
325 case NCI_OP_CORE_CONN_CLOSE_RSP:
326 nci_core_conn_close_rsp_packet(ndev, skb);
327 break;
328
329 case NCI_OP_RF_DISCOVER_MAP_RSP:
330 nci_rf_disc_map_rsp_packet(ndev, skb);
331 break;
332
333 case NCI_OP_RF_DISCOVER_RSP:
334 nci_rf_disc_rsp_packet(ndev, skb);
335 break;
336
337 case NCI_OP_RF_DISCOVER_SELECT_RSP:
338 nci_rf_disc_select_rsp_packet(ndev, skb);
339 break;
340
341 case NCI_OP_RF_DEACTIVATE_RSP:
342 nci_rf_deactivate_rsp_packet(ndev, skb);
343 break;
344
345 case NCI_OP_NFCEE_DISCOVER_RSP:
346 nci_nfcee_discover_rsp_packet(ndev, skb);
347 break;
348
349 case NCI_OP_NFCEE_MODE_SET_RSP:
350 nci_nfcee_mode_set_rsp_packet(ndev, skb);
351 break;
352
353 default:
354 pr_err("unknown rsp opcode 0x%x\n", rsp_opcode);
355 break;
356 }
357
358 nci_core_rsp_packet(ndev, rsp_opcode, skb);
359end:
360 kfree_skb(skb);
361
362 /* trigger the next cmd */
363 atomic_set(&ndev->cmd_cnt, 1);
364 if (!skb_queue_empty(&ndev->cmd_q))
365 queue_work(ndev->cmd_wq, &ndev->cmd_work);
366}
1/*
2 * The NFC Controller Interface is the communication protocol between an
3 * NFC Controller (NFCC) and a Device Host (DH).
4 *
5 * Copyright (C) 2011 Texas Instruments, Inc.
6 *
7 * Written by Ilan Elias <ilane@ti.com>
8 *
9 * Acknowledgements:
10 * This file is based on hci_event.c, which was written
11 * by Maxim Krasnyansky.
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License version 2
15 * as published by the Free Software Foundation
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, see <http://www.gnu.org/licenses/>.
24 *
25 */
26
27#define pr_fmt(fmt) KBUILD_MODNAME ": %s: " fmt, __func__
28
29#include <linux/types.h>
30#include <linux/interrupt.h>
31#include <linux/bitops.h>
32#include <linux/skbuff.h>
33
34#include "../nfc.h"
35#include <net/nfc/nci.h>
36#include <net/nfc/nci_core.h>
37
38/* Handle NCI Response packets */
39
40static void nci_core_reset_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb)
41{
42 struct nci_core_reset_rsp *rsp = (void *) skb->data;
43
44 pr_debug("status 0x%x\n", rsp->status);
45
46 if (rsp->status == NCI_STATUS_OK) {
47 ndev->nci_ver = rsp->nci_ver;
48 pr_debug("nci_ver 0x%x, config_status 0x%x\n",
49 rsp->nci_ver, rsp->config_status);
50 }
51
52 nci_req_complete(ndev, rsp->status);
53}
54
55static void nci_core_init_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb)
56{
57 struct nci_core_init_rsp_1 *rsp_1 = (void *) skb->data;
58 struct nci_core_init_rsp_2 *rsp_2;
59
60 pr_debug("status 0x%x\n", rsp_1->status);
61
62 if (rsp_1->status != NCI_STATUS_OK)
63 goto exit;
64
65 ndev->nfcc_features = __le32_to_cpu(rsp_1->nfcc_features);
66 ndev->num_supported_rf_interfaces = rsp_1->num_supported_rf_interfaces;
67
68 if (ndev->num_supported_rf_interfaces >
69 NCI_MAX_SUPPORTED_RF_INTERFACES) {
70 ndev->num_supported_rf_interfaces =
71 NCI_MAX_SUPPORTED_RF_INTERFACES;
72 }
73
74 memcpy(ndev->supported_rf_interfaces,
75 rsp_1->supported_rf_interfaces,
76 ndev->num_supported_rf_interfaces);
77
78 rsp_2 = (void *) (skb->data + 6 + rsp_1->num_supported_rf_interfaces);
79
80 ndev->max_logical_connections = rsp_2->max_logical_connections;
81 ndev->max_routing_table_size =
82 __le16_to_cpu(rsp_2->max_routing_table_size);
83 ndev->max_ctrl_pkt_payload_len =
84 rsp_2->max_ctrl_pkt_payload_len;
85 ndev->max_size_for_large_params =
86 __le16_to_cpu(rsp_2->max_size_for_large_params);
87 ndev->manufact_id =
88 rsp_2->manufact_id;
89 ndev->manufact_specific_info =
90 __le32_to_cpu(rsp_2->manufact_specific_info);
91
92 pr_debug("nfcc_features 0x%x\n",
93 ndev->nfcc_features);
94 pr_debug("num_supported_rf_interfaces %d\n",
95 ndev->num_supported_rf_interfaces);
96 pr_debug("supported_rf_interfaces[0] 0x%x\n",
97 ndev->supported_rf_interfaces[0]);
98 pr_debug("supported_rf_interfaces[1] 0x%x\n",
99 ndev->supported_rf_interfaces[1]);
100 pr_debug("supported_rf_interfaces[2] 0x%x\n",
101 ndev->supported_rf_interfaces[2]);
102 pr_debug("supported_rf_interfaces[3] 0x%x\n",
103 ndev->supported_rf_interfaces[3]);
104 pr_debug("max_logical_connections %d\n",
105 ndev->max_logical_connections);
106 pr_debug("max_routing_table_size %d\n",
107 ndev->max_routing_table_size);
108 pr_debug("max_ctrl_pkt_payload_len %d\n",
109 ndev->max_ctrl_pkt_payload_len);
110 pr_debug("max_size_for_large_params %d\n",
111 ndev->max_size_for_large_params);
112 pr_debug("manufact_id 0x%x\n",
113 ndev->manufact_id);
114 pr_debug("manufact_specific_info 0x%x\n",
115 ndev->manufact_specific_info);
116
117exit:
118 nci_req_complete(ndev, rsp_1->status);
119}
120
121static void nci_core_set_config_rsp_packet(struct nci_dev *ndev,
122 struct sk_buff *skb)
123{
124 struct nci_core_set_config_rsp *rsp = (void *) skb->data;
125
126 pr_debug("status 0x%x\n", rsp->status);
127
128 nci_req_complete(ndev, rsp->status);
129}
130
131static void nci_rf_disc_map_rsp_packet(struct nci_dev *ndev,
132 struct sk_buff *skb)
133{
134 __u8 status = skb->data[0];
135
136 pr_debug("status 0x%x\n", status);
137
138 nci_req_complete(ndev, status);
139}
140
141static void nci_rf_disc_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb)
142{
143 struct nci_conn_info *conn_info;
144 __u8 status = skb->data[0];
145
146 pr_debug("status 0x%x\n", status);
147
148 if (status == NCI_STATUS_OK) {
149 atomic_set(&ndev->state, NCI_DISCOVERY);
150
151 conn_info = ndev->rf_conn_info;
152 if (!conn_info) {
153 conn_info = devm_kzalloc(&ndev->nfc_dev->dev,
154 sizeof(struct nci_conn_info),
155 GFP_KERNEL);
156 if (!conn_info) {
157 status = NCI_STATUS_REJECTED;
158 goto exit;
159 }
160 conn_info->conn_id = NCI_STATIC_RF_CONN_ID;
161 INIT_LIST_HEAD(&conn_info->list);
162 list_add(&conn_info->list, &ndev->conn_info_list);
163 ndev->rf_conn_info = conn_info;
164 }
165 }
166
167exit:
168 nci_req_complete(ndev, status);
169}
170
171static void nci_rf_disc_select_rsp_packet(struct nci_dev *ndev,
172 struct sk_buff *skb)
173{
174 __u8 status = skb->data[0];
175
176 pr_debug("status 0x%x\n", status);
177
178 /* Complete the request on intf_activated_ntf or generic_error_ntf */
179 if (status != NCI_STATUS_OK)
180 nci_req_complete(ndev, status);
181}
182
183static void nci_rf_deactivate_rsp_packet(struct nci_dev *ndev,
184 struct sk_buff *skb)
185{
186 __u8 status = skb->data[0];
187
188 pr_debug("status 0x%x\n", status);
189
190 /* If target was active, complete the request only in deactivate_ntf */
191 if ((status != NCI_STATUS_OK) ||
192 (atomic_read(&ndev->state) != NCI_POLL_ACTIVE)) {
193 nci_clear_target_list(ndev);
194 atomic_set(&ndev->state, NCI_IDLE);
195 nci_req_complete(ndev, status);
196 }
197}
198
199static void nci_nfcee_discover_rsp_packet(struct nci_dev *ndev,
200 struct sk_buff *skb)
201{
202 struct nci_nfcee_discover_rsp *discover_rsp;
203
204 if (skb->len != 2) {
205 nci_req_complete(ndev, NCI_STATUS_NFCEE_PROTOCOL_ERROR);
206 return;
207 }
208
209 discover_rsp = (struct nci_nfcee_discover_rsp *)skb->data;
210
211 if (discover_rsp->status != NCI_STATUS_OK ||
212 discover_rsp->num_nfcee == 0)
213 nci_req_complete(ndev, discover_rsp->status);
214}
215
216static void nci_nfcee_mode_set_rsp_packet(struct nci_dev *ndev,
217 struct sk_buff *skb)
218{
219 __u8 status = skb->data[0];
220
221 pr_debug("status 0x%x\n", status);
222 nci_req_complete(ndev, status);
223}
224
225static void nci_core_conn_create_rsp_packet(struct nci_dev *ndev,
226 struct sk_buff *skb)
227{
228 __u8 status = skb->data[0];
229 struct nci_conn_info *conn_info = NULL;
230 struct nci_core_conn_create_rsp *rsp;
231
232 pr_debug("status 0x%x\n", status);
233
234 if (status == NCI_STATUS_OK) {
235 rsp = (struct nci_core_conn_create_rsp *)skb->data;
236
237 conn_info = devm_kzalloc(&ndev->nfc_dev->dev,
238 sizeof(*conn_info), GFP_KERNEL);
239 if (!conn_info) {
240 status = NCI_STATUS_REJECTED;
241 goto exit;
242 }
243
244 conn_info->dest_params = devm_kzalloc(&ndev->nfc_dev->dev,
245 sizeof(struct dest_spec_params),
246 GFP_KERNEL);
247 if (!conn_info->dest_params) {
248 status = NCI_STATUS_REJECTED;
249 goto free_conn_info;
250 }
251
252 conn_info->dest_type = ndev->cur_dest_type;
253 conn_info->dest_params->id = ndev->cur_params.id;
254 conn_info->dest_params->protocol = ndev->cur_params.protocol;
255 conn_info->conn_id = rsp->conn_id;
256
257 /* Note: data_exchange_cb and data_exchange_cb_context need to
258 * be specify out of nci_core_conn_create_rsp_packet
259 */
260
261 INIT_LIST_HEAD(&conn_info->list);
262 list_add(&conn_info->list, &ndev->conn_info_list);
263
264 if (ndev->cur_params.id == ndev->hci_dev->nfcee_id)
265 ndev->hci_dev->conn_info = conn_info;
266
267 conn_info->conn_id = rsp->conn_id;
268 conn_info->max_pkt_payload_len = rsp->max_ctrl_pkt_payload_len;
269 atomic_set(&conn_info->credits_cnt, rsp->credits_cnt);
270 }
271
272free_conn_info:
273 if (status == NCI_STATUS_REJECTED)
274 devm_kfree(&ndev->nfc_dev->dev, conn_info);
275exit:
276
277 nci_req_complete(ndev, status);
278}
279
280static void nci_core_conn_close_rsp_packet(struct nci_dev *ndev,
281 struct sk_buff *skb)
282{
283 struct nci_conn_info *conn_info;
284 __u8 status = skb->data[0];
285
286 pr_debug("status 0x%x\n", status);
287 if (status == NCI_STATUS_OK) {
288 conn_info = nci_get_conn_info_by_conn_id(ndev,
289 ndev->cur_conn_id);
290 if (conn_info) {
291 list_del(&conn_info->list);
292 devm_kfree(&ndev->nfc_dev->dev, conn_info);
293 }
294 }
295 nci_req_complete(ndev, status);
296}
297
298void nci_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb)
299{
300 __u16 rsp_opcode = nci_opcode(skb->data);
301
302 /* we got a rsp, stop the cmd timer */
303 del_timer(&ndev->cmd_timer);
304
305 pr_debug("NCI RX: MT=rsp, PBF=%d, GID=0x%x, OID=0x%x, plen=%d\n",
306 nci_pbf(skb->data),
307 nci_opcode_gid(rsp_opcode),
308 nci_opcode_oid(rsp_opcode),
309 nci_plen(skb->data));
310
311 /* strip the nci control header */
312 skb_pull(skb, NCI_CTRL_HDR_SIZE);
313
314 if (nci_opcode_gid(rsp_opcode) == NCI_GID_PROPRIETARY) {
315 if (nci_prop_rsp_packet(ndev, rsp_opcode, skb) == -ENOTSUPP) {
316 pr_err("unsupported rsp opcode 0x%x\n",
317 rsp_opcode);
318 }
319
320 goto end;
321 }
322
323 switch (rsp_opcode) {
324 case NCI_OP_CORE_RESET_RSP:
325 nci_core_reset_rsp_packet(ndev, skb);
326 break;
327
328 case NCI_OP_CORE_INIT_RSP:
329 nci_core_init_rsp_packet(ndev, skb);
330 break;
331
332 case NCI_OP_CORE_SET_CONFIG_RSP:
333 nci_core_set_config_rsp_packet(ndev, skb);
334 break;
335
336 case NCI_OP_CORE_CONN_CREATE_RSP:
337 nci_core_conn_create_rsp_packet(ndev, skb);
338 break;
339
340 case NCI_OP_CORE_CONN_CLOSE_RSP:
341 nci_core_conn_close_rsp_packet(ndev, skb);
342 break;
343
344 case NCI_OP_RF_DISCOVER_MAP_RSP:
345 nci_rf_disc_map_rsp_packet(ndev, skb);
346 break;
347
348 case NCI_OP_RF_DISCOVER_RSP:
349 nci_rf_disc_rsp_packet(ndev, skb);
350 break;
351
352 case NCI_OP_RF_DISCOVER_SELECT_RSP:
353 nci_rf_disc_select_rsp_packet(ndev, skb);
354 break;
355
356 case NCI_OP_RF_DEACTIVATE_RSP:
357 nci_rf_deactivate_rsp_packet(ndev, skb);
358 break;
359
360 case NCI_OP_NFCEE_DISCOVER_RSP:
361 nci_nfcee_discover_rsp_packet(ndev, skb);
362 break;
363
364 case NCI_OP_NFCEE_MODE_SET_RSP:
365 nci_nfcee_mode_set_rsp_packet(ndev, skb);
366 break;
367
368 default:
369 pr_err("unknown rsp opcode 0x%x\n", rsp_opcode);
370 break;
371 }
372
373 nci_core_rsp_packet(ndev, rsp_opcode, skb);
374end:
375 kfree_skb(skb);
376
377 /* trigger the next cmd */
378 atomic_set(&ndev->cmd_cnt, 1);
379 if (!skb_queue_empty(&ndev->cmd_q))
380 queue_work(ndev->cmd_wq, &ndev->cmd_work);
381}