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 #include <linux/nfc.h> 38 39 /* Handle NCI Notification packets */ 40 41 static void nci_core_conn_credits_ntf_packet(struct nci_dev *ndev, 42 struct sk_buff *skb) 43 { 44 struct nci_core_conn_credit_ntf *ntf = (void *) skb->data; 45 int i; 46 47 pr_debug("num_entries %d\n", ntf->num_entries); 48 49 if (ntf->num_entries > NCI_MAX_NUM_CONN) 50 ntf->num_entries = NCI_MAX_NUM_CONN; 51 52 /* update the credits */ 53 for (i = 0; i < ntf->num_entries; i++) { 54 ntf->conn_entries[i].conn_id = 55 nci_conn_id(&ntf->conn_entries[i].conn_id); 56 57 pr_debug("entry[%d]: conn_id %d, credits %d\n", 58 i, ntf->conn_entries[i].conn_id, 59 ntf->conn_entries[i].credits); 60 61 if (ntf->conn_entries[i].conn_id == NCI_STATIC_RF_CONN_ID) { 62 /* found static rf connection */ 63 atomic_add(ntf->conn_entries[i].credits, 64 &ndev->credits_cnt); 65 } 66 } 67 68 /* trigger the next tx */ 69 if (!skb_queue_empty(&ndev->tx_q)) 70 queue_work(ndev->tx_wq, &ndev->tx_work); 71 } 72 73 static void nci_core_generic_error_ntf_packet(struct nci_dev *ndev, 74 struct sk_buff *skb) 75 { 76 __u8 status = skb->data[0]; 77 78 pr_debug("status 0x%x\n", status); 79 80 if (atomic_read(&ndev->state) == NCI_W4_HOST_SELECT) { 81 /* Activation failed, so complete the request 82 (the state remains the same) */ 83 nci_req_complete(ndev, status); 84 } 85 } 86 87 static void nci_core_conn_intf_error_ntf_packet(struct nci_dev *ndev, 88 struct sk_buff *skb) 89 { 90 struct nci_core_intf_error_ntf *ntf = (void *) skb->data; 91 92 ntf->conn_id = nci_conn_id(&ntf->conn_id); 93 94 pr_debug("status 0x%x, conn_id %d\n", ntf->status, ntf->conn_id); 95 96 /* complete the data exchange transaction, if exists */ 97 if (test_bit(NCI_DATA_EXCHANGE, &ndev->flags)) 98 nci_data_exchange_complete(ndev, NULL, -EIO); 99 } 100 101 static __u8 *nci_extract_rf_params_nfca_passive_poll(struct nci_dev *ndev, 102 struct rf_tech_specific_params_nfca_poll *nfca_poll, 103 __u8 *data) 104 { 105 nfca_poll->sens_res = __le16_to_cpu(*((__u16 *)data)); 106 data += 2; 107 108 nfca_poll->nfcid1_len = min_t(__u8, *data++, NFC_NFCID1_MAXSIZE); 109 110 pr_debug("sens_res 0x%x, nfcid1_len %d\n", 111 nfca_poll->sens_res, nfca_poll->nfcid1_len); 112 113 memcpy(nfca_poll->nfcid1, data, nfca_poll->nfcid1_len); 114 data += nfca_poll->nfcid1_len; 115 116 nfca_poll->sel_res_len = *data++; 117 118 if (nfca_poll->sel_res_len != 0) 119 nfca_poll->sel_res = *data++; 120 121 pr_debug("sel_res_len %d, sel_res 0x%x\n", 122 nfca_poll->sel_res_len, 123 nfca_poll->sel_res); 124 125 return data; 126 } 127 128 static __u8 *nci_extract_rf_params_nfcb_passive_poll(struct nci_dev *ndev, 129 struct rf_tech_specific_params_nfcb_poll *nfcb_poll, 130 __u8 *data) 131 { 132 nfcb_poll->sensb_res_len = min_t(__u8, *data++, NFC_SENSB_RES_MAXSIZE); 133 134 pr_debug("sensb_res_len %d\n", nfcb_poll->sensb_res_len); 135 136 memcpy(nfcb_poll->sensb_res, data, nfcb_poll->sensb_res_len); 137 data += nfcb_poll->sensb_res_len; 138 139 return data; 140 } 141 142 static __u8 *nci_extract_rf_params_nfcf_passive_poll(struct nci_dev *ndev, 143 struct rf_tech_specific_params_nfcf_poll *nfcf_poll, 144 __u8 *data) 145 { 146 nfcf_poll->bit_rate = *data++; 147 nfcf_poll->sensf_res_len = min_t(__u8, *data++, NFC_SENSF_RES_MAXSIZE); 148 149 pr_debug("bit_rate %d, sensf_res_len %d\n", 150 nfcf_poll->bit_rate, nfcf_poll->sensf_res_len); 151 152 memcpy(nfcf_poll->sensf_res, data, nfcf_poll->sensf_res_len); 153 data += nfcf_poll->sensf_res_len; 154 155 return data; 156 } 157 158 static int nci_add_new_protocol(struct nci_dev *ndev, 159 struct nfc_target *target, 160 __u8 rf_protocol, 161 __u8 rf_tech_and_mode, 162 void *params) 163 { 164 struct rf_tech_specific_params_nfca_poll *nfca_poll; 165 struct rf_tech_specific_params_nfcb_poll *nfcb_poll; 166 struct rf_tech_specific_params_nfcf_poll *nfcf_poll; 167 __u32 protocol; 168 169 if (rf_protocol == NCI_RF_PROTOCOL_T2T) 170 protocol = NFC_PROTO_MIFARE_MASK; 171 else if (rf_protocol == NCI_RF_PROTOCOL_ISO_DEP) 172 if (rf_tech_and_mode == NCI_NFC_A_PASSIVE_POLL_MODE) 173 protocol = NFC_PROTO_ISO14443_MASK; 174 else 175 protocol = NFC_PROTO_ISO14443_B_MASK; 176 else if (rf_protocol == NCI_RF_PROTOCOL_T3T) 177 protocol = NFC_PROTO_FELICA_MASK; 178 else if (rf_protocol == NCI_RF_PROTOCOL_NFC_DEP) 179 protocol = NFC_PROTO_NFC_DEP_MASK; 180 else 181 protocol = 0; 182 183 if (!(protocol & ndev->poll_prots)) { 184 pr_err("the target found does not have the desired protocol\n"); 185 return -EPROTO; 186 } 187 188 if (rf_tech_and_mode == NCI_NFC_A_PASSIVE_POLL_MODE) { 189 nfca_poll = (struct rf_tech_specific_params_nfca_poll *)params; 190 191 target->sens_res = nfca_poll->sens_res; 192 target->sel_res = nfca_poll->sel_res; 193 target->nfcid1_len = nfca_poll->nfcid1_len; 194 if (target->nfcid1_len > 0) { 195 memcpy(target->nfcid1, nfca_poll->nfcid1, 196 target->nfcid1_len); 197 } 198 } else if (rf_tech_and_mode == NCI_NFC_B_PASSIVE_POLL_MODE) { 199 nfcb_poll = (struct rf_tech_specific_params_nfcb_poll *)params; 200 201 target->sensb_res_len = nfcb_poll->sensb_res_len; 202 if (target->sensb_res_len > 0) { 203 memcpy(target->sensb_res, nfcb_poll->sensb_res, 204 target->sensb_res_len); 205 } 206 } else if (rf_tech_and_mode == NCI_NFC_F_PASSIVE_POLL_MODE) { 207 nfcf_poll = (struct rf_tech_specific_params_nfcf_poll *)params; 208 209 target->sensf_res_len = nfcf_poll->sensf_res_len; 210 if (target->sensf_res_len > 0) { 211 memcpy(target->sensf_res, nfcf_poll->sensf_res, 212 target->sensf_res_len); 213 } 214 } else { 215 pr_err("unsupported rf_tech_and_mode 0x%x\n", rf_tech_and_mode); 216 return -EPROTO; 217 } 218 219 target->supported_protocols |= protocol; 220 221 pr_debug("protocol 0x%x\n", protocol); 222 223 return 0; 224 } 225 226 static void nci_add_new_target(struct nci_dev *ndev, 227 struct nci_rf_discover_ntf *ntf) 228 { 229 struct nfc_target *target; 230 int i, rc; 231 232 for (i = 0; i < ndev->n_targets; i++) { 233 target = &ndev->targets[i]; 234 if (target->logical_idx == ntf->rf_discovery_id) { 235 /* This target already exists, add the new protocol */ 236 nci_add_new_protocol(ndev, target, ntf->rf_protocol, 237 ntf->rf_tech_and_mode, 238 &ntf->rf_tech_specific_params); 239 return; 240 } 241 } 242 243 /* This is a new target, check if we've enough room */ 244 if (ndev->n_targets == NCI_MAX_DISCOVERED_TARGETS) { 245 pr_debug("not enough room, ignoring new target...\n"); 246 return; 247 } 248 249 target = &ndev->targets[ndev->n_targets]; 250 251 rc = nci_add_new_protocol(ndev, target, ntf->rf_protocol, 252 ntf->rf_tech_and_mode, 253 &ntf->rf_tech_specific_params); 254 if (!rc) { 255 target->logical_idx = ntf->rf_discovery_id; 256 ndev->n_targets++; 257 258 pr_debug("logical idx %d, n_targets %d\n", target->logical_idx, 259 ndev->n_targets); 260 } 261 } 262 263 void nci_clear_target_list(struct nci_dev *ndev) 264 { 265 memset(ndev->targets, 0, 266 (sizeof(struct nfc_target)*NCI_MAX_DISCOVERED_TARGETS)); 267 268 ndev->n_targets = 0; 269 } 270 271 static void nci_rf_discover_ntf_packet(struct nci_dev *ndev, 272 struct sk_buff *skb) 273 { 274 struct nci_rf_discover_ntf ntf; 275 __u8 *data = skb->data; 276 bool add_target = true; 277 278 ntf.rf_discovery_id = *data++; 279 ntf.rf_protocol = *data++; 280 ntf.rf_tech_and_mode = *data++; 281 ntf.rf_tech_specific_params_len = *data++; 282 283 pr_debug("rf_discovery_id %d\n", ntf.rf_discovery_id); 284 pr_debug("rf_protocol 0x%x\n", ntf.rf_protocol); 285 pr_debug("rf_tech_and_mode 0x%x\n", ntf.rf_tech_and_mode); 286 pr_debug("rf_tech_specific_params_len %d\n", 287 ntf.rf_tech_specific_params_len); 288 289 if (ntf.rf_tech_specific_params_len > 0) { 290 switch (ntf.rf_tech_and_mode) { 291 case NCI_NFC_A_PASSIVE_POLL_MODE: 292 data = nci_extract_rf_params_nfca_passive_poll(ndev, 293 &(ntf.rf_tech_specific_params.nfca_poll), data); 294 break; 295 296 case NCI_NFC_B_PASSIVE_POLL_MODE: 297 data = nci_extract_rf_params_nfcb_passive_poll(ndev, 298 &(ntf.rf_tech_specific_params.nfcb_poll), data); 299 break; 300 301 case NCI_NFC_F_PASSIVE_POLL_MODE: 302 data = nci_extract_rf_params_nfcf_passive_poll(ndev, 303 &(ntf.rf_tech_specific_params.nfcf_poll), data); 304 break; 305 306 default: 307 pr_err("unsupported rf_tech_and_mode 0x%x\n", 308 ntf.rf_tech_and_mode); 309 data += ntf.rf_tech_specific_params_len; 310 add_target = false; 311 } 312 } 313 314 ntf.ntf_type = *data++; 315 pr_debug("ntf_type %d\n", ntf.ntf_type); 316 317 if (add_target == true) 318 nci_add_new_target(ndev, &ntf); 319 320 if (ntf.ntf_type == NCI_DISCOVER_NTF_TYPE_MORE) { 321 atomic_set(&ndev->state, NCI_W4_ALL_DISCOVERIES); 322 } else { 323 atomic_set(&ndev->state, NCI_W4_HOST_SELECT); 324 nfc_targets_found(ndev->nfc_dev, ndev->targets, 325 ndev->n_targets); 326 } 327 } 328 329 static int nci_extract_activation_params_iso_dep(struct nci_dev *ndev, 330 struct nci_rf_intf_activated_ntf *ntf, __u8 *data) 331 { 332 struct activation_params_nfca_poll_iso_dep *nfca_poll; 333 struct activation_params_nfcb_poll_iso_dep *nfcb_poll; 334 335 switch (ntf->activation_rf_tech_and_mode) { 336 case NCI_NFC_A_PASSIVE_POLL_MODE: 337 nfca_poll = &ntf->activation_params.nfca_poll_iso_dep; 338 nfca_poll->rats_res_len = min_t(__u8, *data++, 20); 339 pr_debug("rats_res_len %d\n", nfca_poll->rats_res_len); 340 if (nfca_poll->rats_res_len > 0) { 341 memcpy(nfca_poll->rats_res, 342 data, nfca_poll->rats_res_len); 343 } 344 break; 345 346 case NCI_NFC_B_PASSIVE_POLL_MODE: 347 nfcb_poll = &ntf->activation_params.nfcb_poll_iso_dep; 348 nfcb_poll->attrib_res_len = min_t(__u8, *data++, 50); 349 pr_debug("attrib_res_len %d\n", nfcb_poll->attrib_res_len); 350 if (nfcb_poll->attrib_res_len > 0) { 351 memcpy(nfcb_poll->attrib_res, 352 data, nfcb_poll->attrib_res_len); 353 } 354 break; 355 356 default: 357 pr_err("unsupported activation_rf_tech_and_mode 0x%x\n", 358 ntf->activation_rf_tech_and_mode); 359 return NCI_STATUS_RF_PROTOCOL_ERROR; 360 } 361 362 return NCI_STATUS_OK; 363 } 364 365 static int nci_extract_activation_params_nfc_dep(struct nci_dev *ndev, 366 struct nci_rf_intf_activated_ntf *ntf, __u8 *data) 367 { 368 struct activation_params_poll_nfc_dep *poll; 369 370 switch (ntf->activation_rf_tech_and_mode) { 371 case NCI_NFC_A_PASSIVE_POLL_MODE: 372 case NCI_NFC_F_PASSIVE_POLL_MODE: 373 poll = &ntf->activation_params.poll_nfc_dep; 374 poll->atr_res_len = min_t(__u8, *data++, 63); 375 pr_debug("atr_res_len %d\n", poll->atr_res_len); 376 if (poll->atr_res_len > 0) 377 memcpy(poll->atr_res, data, poll->atr_res_len); 378 break; 379 380 default: 381 pr_err("unsupported activation_rf_tech_and_mode 0x%x\n", 382 ntf->activation_rf_tech_and_mode); 383 return NCI_STATUS_RF_PROTOCOL_ERROR; 384 } 385 386 return NCI_STATUS_OK; 387 } 388 389 static void nci_target_auto_activated(struct nci_dev *ndev, 390 struct nci_rf_intf_activated_ntf *ntf) 391 { 392 struct nfc_target *target; 393 int rc; 394 395 target = &ndev->targets[ndev->n_targets]; 396 397 rc = nci_add_new_protocol(ndev, target, ntf->rf_protocol, 398 ntf->activation_rf_tech_and_mode, 399 &ntf->rf_tech_specific_params); 400 if (rc) 401 return; 402 403 target->logical_idx = ntf->rf_discovery_id; 404 ndev->n_targets++; 405 406 pr_debug("logical idx %d, n_targets %d\n", 407 target->logical_idx, ndev->n_targets); 408 409 nfc_targets_found(ndev->nfc_dev, ndev->targets, ndev->n_targets); 410 } 411 412 static void nci_rf_intf_activated_ntf_packet(struct nci_dev *ndev, 413 struct sk_buff *skb) 414 { 415 struct nci_rf_intf_activated_ntf ntf; 416 __u8 *data = skb->data; 417 int err = NCI_STATUS_OK; 418 419 ntf.rf_discovery_id = *data++; 420 ntf.rf_interface = *data++; 421 ntf.rf_protocol = *data++; 422 ntf.activation_rf_tech_and_mode = *data++; 423 ntf.max_data_pkt_payload_size = *data++; 424 ntf.initial_num_credits = *data++; 425 ntf.rf_tech_specific_params_len = *data++; 426 427 pr_debug("rf_discovery_id %d\n", ntf.rf_discovery_id); 428 pr_debug("rf_interface 0x%x\n", ntf.rf_interface); 429 pr_debug("rf_protocol 0x%x\n", ntf.rf_protocol); 430 pr_debug("activation_rf_tech_and_mode 0x%x\n", 431 ntf.activation_rf_tech_and_mode); 432 pr_debug("max_data_pkt_payload_size 0x%x\n", 433 ntf.max_data_pkt_payload_size); 434 pr_debug("initial_num_credits 0x%x\n", 435 ntf.initial_num_credits); 436 pr_debug("rf_tech_specific_params_len %d\n", 437 ntf.rf_tech_specific_params_len); 438 439 if (ntf.rf_tech_specific_params_len > 0) { 440 switch (ntf.activation_rf_tech_and_mode) { 441 case NCI_NFC_A_PASSIVE_POLL_MODE: 442 data = nci_extract_rf_params_nfca_passive_poll(ndev, 443 &(ntf.rf_tech_specific_params.nfca_poll), data); 444 break; 445 446 case NCI_NFC_B_PASSIVE_POLL_MODE: 447 data = nci_extract_rf_params_nfcb_passive_poll(ndev, 448 &(ntf.rf_tech_specific_params.nfcb_poll), data); 449 break; 450 451 case NCI_NFC_F_PASSIVE_POLL_MODE: 452 data = nci_extract_rf_params_nfcf_passive_poll(ndev, 453 &(ntf.rf_tech_specific_params.nfcf_poll), data); 454 break; 455 456 default: 457 pr_err("unsupported activation_rf_tech_and_mode 0x%x\n", 458 ntf.activation_rf_tech_and_mode); 459 err = NCI_STATUS_RF_PROTOCOL_ERROR; 460 goto exit; 461 } 462 } 463 464 ntf.data_exch_rf_tech_and_mode = *data++; 465 ntf.data_exch_tx_bit_rate = *data++; 466 ntf.data_exch_rx_bit_rate = *data++; 467 ntf.activation_params_len = *data++; 468 469 pr_debug("data_exch_rf_tech_and_mode 0x%x\n", 470 ntf.data_exch_rf_tech_and_mode); 471 pr_debug("data_exch_tx_bit_rate 0x%x\n", ntf.data_exch_tx_bit_rate); 472 pr_debug("data_exch_rx_bit_rate 0x%x\n", ntf.data_exch_rx_bit_rate); 473 pr_debug("activation_params_len %d\n", ntf.activation_params_len); 474 475 if (ntf.activation_params_len > 0) { 476 switch (ntf.rf_interface) { 477 case NCI_RF_INTERFACE_ISO_DEP: 478 err = nci_extract_activation_params_iso_dep(ndev, 479 &ntf, data); 480 break; 481 482 case NCI_RF_INTERFACE_NFC_DEP: 483 err = nci_extract_activation_params_nfc_dep(ndev, 484 &ntf, data); 485 break; 486 487 case NCI_RF_INTERFACE_FRAME: 488 /* no activation params */ 489 break; 490 491 default: 492 pr_err("unsupported rf_interface 0x%x\n", 493 ntf.rf_interface); 494 err = NCI_STATUS_RF_PROTOCOL_ERROR; 495 break; 496 } 497 } 498 499 exit: 500 if (err == NCI_STATUS_OK) { 501 ndev->max_data_pkt_payload_size = ntf.max_data_pkt_payload_size; 502 ndev->initial_num_credits = ntf.initial_num_credits; 503 504 /* set the available credits to initial value */ 505 atomic_set(&ndev->credits_cnt, ndev->initial_num_credits); 506 507 /* store general bytes to be reported later in dep_link_up */ 508 if (ntf.rf_interface == NCI_RF_INTERFACE_NFC_DEP) { 509 ndev->remote_gb_len = 0; 510 511 if (ntf.activation_params_len > 0) { 512 /* ATR_RES general bytes at offset 15 */ 513 ndev->remote_gb_len = min_t(__u8, 514 (ntf.activation_params 515 .poll_nfc_dep.atr_res_len 516 - NFC_ATR_RES_GT_OFFSET), 517 NFC_MAX_GT_LEN); 518 memcpy(ndev->remote_gb, 519 (ntf.activation_params.poll_nfc_dep 520 .atr_res + NFC_ATR_RES_GT_OFFSET), 521 ndev->remote_gb_len); 522 } 523 } 524 } 525 526 if (atomic_read(&ndev->state) == NCI_DISCOVERY) { 527 /* A single target was found and activated automatically */ 528 atomic_set(&ndev->state, NCI_POLL_ACTIVE); 529 if (err == NCI_STATUS_OK) 530 nci_target_auto_activated(ndev, &ntf); 531 } else { /* ndev->state == NCI_W4_HOST_SELECT */ 532 /* A selected target was activated, so complete the request */ 533 atomic_set(&ndev->state, NCI_POLL_ACTIVE); 534 nci_req_complete(ndev, err); 535 } 536 } 537 538 static void nci_rf_deactivate_ntf_packet(struct nci_dev *ndev, 539 struct sk_buff *skb) 540 { 541 struct nci_rf_deactivate_ntf *ntf = (void *) skb->data; 542 543 pr_debug("entry, type 0x%x, reason 0x%x\n", ntf->type, ntf->reason); 544 545 /* drop tx data queue */ 546 skb_queue_purge(&ndev->tx_q); 547 548 /* drop partial rx data packet */ 549 if (ndev->rx_data_reassembly) { 550 kfree_skb(ndev->rx_data_reassembly); 551 ndev->rx_data_reassembly = NULL; 552 } 553 554 /* complete the data exchange transaction, if exists */ 555 if (test_bit(NCI_DATA_EXCHANGE, &ndev->flags)) 556 nci_data_exchange_complete(ndev, NULL, -EIO); 557 558 nci_clear_target_list(ndev); 559 atomic_set(&ndev->state, NCI_IDLE); 560 nci_req_complete(ndev, NCI_STATUS_OK); 561 } 562 563 void nci_ntf_packet(struct nci_dev *ndev, struct sk_buff *skb) 564 { 565 __u16 ntf_opcode = nci_opcode(skb->data); 566 567 pr_debug("NCI RX: MT=ntf, PBF=%d, GID=0x%x, OID=0x%x, plen=%d\n", 568 nci_pbf(skb->data), 569 nci_opcode_gid(ntf_opcode), 570 nci_opcode_oid(ntf_opcode), 571 nci_plen(skb->data)); 572 573 /* strip the nci control header */ 574 skb_pull(skb, NCI_CTRL_HDR_SIZE); 575 576 switch (ntf_opcode) { 577 case NCI_OP_CORE_CONN_CREDITS_NTF: 578 nci_core_conn_credits_ntf_packet(ndev, skb); 579 break; 580 581 case NCI_OP_CORE_GENERIC_ERROR_NTF: 582 nci_core_generic_error_ntf_packet(ndev, skb); 583 break; 584 585 case NCI_OP_CORE_INTF_ERROR_NTF: 586 nci_core_conn_intf_error_ntf_packet(ndev, skb); 587 break; 588 589 case NCI_OP_RF_DISCOVER_NTF: 590 nci_rf_discover_ntf_packet(ndev, skb); 591 break; 592 593 case NCI_OP_RF_INTF_ACTIVATED_NTF: 594 nci_rf_intf_activated_ntf_packet(ndev, skb); 595 break; 596 597 case NCI_OP_RF_DEACTIVATE_NTF: 598 nci_rf_deactivate_ntf_packet(ndev, skb); 599 break; 600 601 default: 602 pr_err("unknown ntf opcode 0x%x\n", ntf_opcode); 603 break; 604 } 605 606 kfree_skb(skb); 607 } 608