1// SPDX-License-Identifier: GPL-2.0 2/* 3 * Copyright (c) 2012 - 2018 Microchip Technology Inc., and its subsidiaries. 4 * All rights reserved. 5 */ 6 7#include <linux/irq.h> 8#include <linux/kthread.h> 9#include <linux/firmware.h> 10#include <linux/netdevice.h> 11#include <linux/inetdevice.h> 12 13#include "cfg80211.h" 14#include "wlan_cfg.h" 15 16#define WILC_MULTICAST_TABLE_SIZE 8 17#define WILC_MAX_FW_VERSION_STR_SIZE 50 18 19/* latest API version supported */ 20#define WILC1000_API_VER 1 21 22#define WILC1000_FW_PREFIX "atmel/wilc1000_wifi_firmware-" 23#define __WILC1000_FW(api) WILC1000_FW_PREFIX #api ".bin" 24#define WILC1000_FW(api) __WILC1000_FW(api) 25 26static irqreturn_t isr_uh_routine(int irq, void *user_data) 27{ 28 struct wilc *wilc = user_data; 29 30 if (wilc->close) { 31 pr_err("Can't handle UH interrupt\n"); 32 return IRQ_HANDLED; 33 } 34 return IRQ_WAKE_THREAD; 35} 36 37static irqreturn_t isr_bh_routine(int irq, void *userdata) 38{ 39 struct wilc *wilc = userdata; 40 41 if (wilc->close) { 42 pr_err("Can't handle BH interrupt\n"); 43 return IRQ_HANDLED; 44 } 45 46 wilc_handle_isr(wilc); 47 48 return IRQ_HANDLED; 49} 50 51static int init_irq(struct net_device *dev) 52{ 53 struct wilc_vif *vif = netdev_priv(dev); 54 struct wilc *wl = vif->wilc; 55 int ret; 56 57 ret = request_threaded_irq(wl->dev_irq_num, isr_uh_routine, 58 isr_bh_routine, 59 IRQF_TRIGGER_FALLING | IRQF_ONESHOT, 60 dev->name, wl); 61 if (ret) { 62 netdev_err(dev, "Failed to request IRQ [%d]\n", ret); 63 return ret; 64 } 65 netdev_dbg(dev, "IRQ request succeeded IRQ-NUM= %d\n", wl->dev_irq_num); 66 67 return 0; 68} 69 70static void deinit_irq(struct net_device *dev) 71{ 72 struct wilc_vif *vif = netdev_priv(dev); 73 struct wilc *wilc = vif->wilc; 74 75 /* Deinitialize IRQ */ 76 if (wilc->dev_irq_num) 77 free_irq(wilc->dev_irq_num, wilc); 78} 79 80void wilc_mac_indicate(struct wilc *wilc) 81{ 82 s8 status; 83 84 wilc_wlan_cfg_get_val(wilc, WID_STATUS, &status, 1); 85 if (wilc->mac_status == WILC_MAC_STATUS_INIT) { 86 wilc->mac_status = status; 87 complete(&wilc->sync_event); 88 } else { 89 wilc->mac_status = status; 90 } 91} 92 93static struct net_device *get_if_handler(struct wilc *wilc, u8 *mac_header) 94{ 95 struct net_device *ndev = NULL; 96 struct wilc_vif *vif; 97 struct ieee80211_hdr *h = (struct ieee80211_hdr *)mac_header; 98 99 wilc_for_each_vif(wilc, vif) { 100 if (vif->iftype == WILC_STATION_MODE) 101 if (ether_addr_equal_unaligned(h->addr2, vif->bssid)) { 102 ndev = vif->ndev; 103 goto out; 104 } 105 if (vif->iftype == WILC_AP_MODE) 106 if (ether_addr_equal_unaligned(h->addr1, vif->bssid)) { 107 ndev = vif->ndev; 108 goto out; 109 } 110 } 111out: 112 return ndev; 113} 114 115void wilc_wlan_set_bssid(struct net_device *wilc_netdev, const u8 *bssid, 116 u8 mode) 117{ 118 struct wilc_vif *vif = netdev_priv(wilc_netdev); 119 120 if (bssid) 121 ether_addr_copy(vif->bssid, bssid); 122 else 123 eth_zero_addr(vif->bssid); 124 125 vif->iftype = mode; 126} 127 128int wilc_wlan_get_num_conn_ifcs(struct wilc *wilc) 129{ 130 int srcu_idx; 131 u8 ret_val = 0; 132 struct wilc_vif *vif; 133 134 srcu_idx = srcu_read_lock(&wilc->srcu); 135 wilc_for_each_vif(wilc, vif) { 136 if (!is_zero_ether_addr(vif->bssid)) 137 ret_val++; 138 } 139 srcu_read_unlock(&wilc->srcu, srcu_idx); 140 return ret_val; 141} 142 143static void wilc_wake_tx_queues(struct wilc *wl) 144{ 145 int srcu_idx; 146 struct wilc_vif *ifc; 147 148 srcu_idx = srcu_read_lock(&wl->srcu); 149 wilc_for_each_vif(wl, ifc) { 150 if (ifc->mac_opened && netif_queue_stopped(ifc->ndev)) 151 netif_wake_queue(ifc->ndev); 152 } 153 srcu_read_unlock(&wl->srcu, srcu_idx); 154} 155 156static int wilc_txq_task(void *vp) 157{ 158 int ret; 159 u32 txq_count; 160 struct wilc *wl = vp; 161 162 complete(&wl->txq_thread_started); 163 while (1) { 164 if (wait_for_completion_interruptible(&wl->txq_event)) 165 continue; 166 if (wl->close) { 167 complete(&wl->txq_thread_started); 168 169 while (!kthread_should_stop()) 170 schedule(); 171 break; 172 } 173 do { 174 ret = wilc_wlan_handle_txq(wl, &txq_count); 175 if (txq_count < FLOW_CONTROL_LOWER_THRESHOLD) { 176 wilc_wake_tx_queues(wl); 177 } 178 if (ret != WILC_VMM_ENTRY_FULL_RETRY) 179 break; 180 /* Back off TX task from sending packets for some time. 181 * msleep_interruptible will allow RX task to run and 182 * free buffers. TX task will be in TASK_INTERRUPTIBLE 183 * state which will put the thread back to CPU running 184 * queue when it's signaled even if the timeout isn't 185 * elapsed. This gives faster chance for reserved SK 186 * buffers to be free. 187 */ 188 msleep_interruptible(TX_BACKOFF_WEIGHT_MS); 189 } while (!wl->close); 190 } 191 return 0; 192} 193 194static int wilc_wlan_get_firmware(struct net_device *dev) 195{ 196 struct wilc_vif *vif = netdev_priv(dev); 197 struct wilc *wilc = vif->wilc; 198 int chip_id; 199 const struct firmware *wilc_fw; 200 int ret; 201 202 chip_id = wilc_get_chipid(wilc, false); 203 204 netdev_info(dev, "ChipID [%x] loading firmware [%s]\n", chip_id, 205 WILC1000_FW(WILC1000_API_VER)); 206 207 ret = request_firmware(&wilc_fw, WILC1000_FW(WILC1000_API_VER), 208 wilc->dev); 209 if (ret != 0) { 210 netdev_err(dev, "%s - firmware not available\n", 211 WILC1000_FW(WILC1000_API_VER)); 212 return -EINVAL; 213 } 214 wilc->firmware = wilc_fw; 215 216 return 0; 217} 218 219static int wilc_start_firmware(struct net_device *dev) 220{ 221 struct wilc_vif *vif = netdev_priv(dev); 222 struct wilc *wilc = vif->wilc; 223 int ret = 0; 224 225 ret = wilc_wlan_start(wilc); 226 if (ret) 227 return ret; 228 229 if (!wait_for_completion_timeout(&wilc->sync_event, 230 msecs_to_jiffies(5000))) 231 return -ETIME; 232 233 return 0; 234} 235 236static int wilc1000_firmware_download(struct net_device *dev) 237{ 238 struct wilc_vif *vif = netdev_priv(dev); 239 struct wilc *wilc = vif->wilc; 240 int ret = 0; 241 242 if (!wilc->firmware) { 243 netdev_err(dev, "Firmware buffer is NULL\n"); 244 return -ENOBUFS; 245 } 246 247 ret = wilc_wlan_firmware_download(wilc, wilc->firmware->data, 248 wilc->firmware->size); 249 if (ret) 250 return ret; 251 252 release_firmware(wilc->firmware); 253 wilc->firmware = NULL; 254 255 netdev_dbg(dev, "Download Succeeded\n"); 256 257 return 0; 258} 259 260static int wilc_init_fw_config(struct net_device *dev, struct wilc_vif *vif) 261{ 262 struct wilc_priv *priv = &vif->priv; 263 struct host_if_drv *hif_drv; 264 u8 b; 265 u16 hw; 266 u32 w; 267 268 netdev_dbg(dev, "Start configuring Firmware\n"); 269 hif_drv = (struct host_if_drv *)priv->hif_drv; 270 netdev_dbg(dev, "Host = %p\n", hif_drv); 271 272 w = vif->iftype; 273 cpu_to_le32s(&w); 274 if (!wilc_wlan_cfg_set(vif, 1, WID_SET_OPERATION_MODE, (u8 *)&w, 4, 275 0, 0)) 276 goto fail; 277 278 b = WILC_FW_BSS_TYPE_INFRA; 279 if (!wilc_wlan_cfg_set(vif, 0, WID_BSS_TYPE, &b, 1, 0, 0)) 280 goto fail; 281 282 b = WILC_FW_TX_RATE_AUTO; 283 if (!wilc_wlan_cfg_set(vif, 0, WID_CURRENT_TX_RATE, &b, 1, 0, 0)) 284 goto fail; 285 286 b = WILC_FW_OPER_MODE_G_MIXED_11B_2; 287 if (!wilc_wlan_cfg_set(vif, 0, WID_11G_OPERATING_MODE, &b, 1, 0, 0)) 288 goto fail; 289 290 b = WILC_FW_PREAMBLE_AUTO; 291 if (!wilc_wlan_cfg_set(vif, 0, WID_PREAMBLE, &b, 1, 0, 0)) 292 goto fail; 293 294 b = WILC_FW_11N_PROT_AUTO; 295 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_PROT_MECH, &b, 1, 0, 0)) 296 goto fail; 297 298 b = WILC_FW_ACTIVE_SCAN; 299 if (!wilc_wlan_cfg_set(vif, 0, WID_SCAN_TYPE, &b, 1, 0, 0)) 300 goto fail; 301 302 b = WILC_FW_SITE_SURVEY_OFF; 303 if (!wilc_wlan_cfg_set(vif, 0, WID_SITE_SURVEY, &b, 1, 0, 0)) 304 goto fail; 305 306 hw = 0xffff; 307 cpu_to_le16s(&hw); 308 if (!wilc_wlan_cfg_set(vif, 0, WID_RTS_THRESHOLD, (u8 *)&hw, 2, 0, 0)) 309 goto fail; 310 311 hw = 2346; 312 cpu_to_le16s(&hw); 313 if (!wilc_wlan_cfg_set(vif, 0, WID_FRAG_THRESHOLD, (u8 *)&hw, 2, 0, 0)) 314 goto fail; 315 316 b = 0; 317 if (!wilc_wlan_cfg_set(vif, 0, WID_BCAST_SSID, &b, 1, 0, 0)) 318 goto fail; 319 320 b = 1; 321 if (!wilc_wlan_cfg_set(vif, 0, WID_QOS_ENABLE, &b, 1, 0, 0)) 322 goto fail; 323 324 b = WILC_FW_NO_POWERSAVE; 325 if (!wilc_wlan_cfg_set(vif, 0, WID_POWER_MANAGEMENT, &b, 1, 0, 0)) 326 goto fail; 327 328 b = WILC_FW_SEC_NO; 329 if (!wilc_wlan_cfg_set(vif, 0, WID_11I_MODE, &b, 1, 0, 0)) 330 goto fail; 331 332 b = WILC_FW_AUTH_OPEN_SYSTEM; 333 if (!wilc_wlan_cfg_set(vif, 0, WID_AUTH_TYPE, &b, 1, 0, 0)) 334 goto fail; 335 336 b = 3; 337 if (!wilc_wlan_cfg_set(vif, 0, WID_LISTEN_INTERVAL, &b, 1, 0, 0)) 338 goto fail; 339 340 b = 3; 341 if (!wilc_wlan_cfg_set(vif, 0, WID_DTIM_PERIOD, &b, 1, 0, 0)) 342 goto fail; 343 344 b = WILC_FW_ACK_POLICY_NORMAL; 345 if (!wilc_wlan_cfg_set(vif, 0, WID_ACK_POLICY, &b, 1, 0, 0)) 346 goto fail; 347 348 b = 0; 349 if (!wilc_wlan_cfg_set(vif, 0, WID_USER_CONTROL_ON_TX_POWER, &b, 1, 350 0, 0)) 351 goto fail; 352 353 b = 48; 354 if (!wilc_wlan_cfg_set(vif, 0, WID_TX_POWER_LEVEL_11A, &b, 1, 0, 0)) 355 goto fail; 356 357 b = 28; 358 if (!wilc_wlan_cfg_set(vif, 0, WID_TX_POWER_LEVEL_11B, &b, 1, 0, 0)) 359 goto fail; 360 361 hw = 100; 362 cpu_to_le16s(&hw); 363 if (!wilc_wlan_cfg_set(vif, 0, WID_BEACON_INTERVAL, (u8 *)&hw, 2, 0, 0)) 364 goto fail; 365 366 b = WILC_FW_REKEY_POLICY_DISABLE; 367 if (!wilc_wlan_cfg_set(vif, 0, WID_REKEY_POLICY, &b, 1, 0, 0)) 368 goto fail; 369 370 w = 84600; 371 cpu_to_le32s(&w); 372 if (!wilc_wlan_cfg_set(vif, 0, WID_REKEY_PERIOD, (u8 *)&w, 4, 0, 0)) 373 goto fail; 374 375 w = 500; 376 cpu_to_le32s(&w); 377 if (!wilc_wlan_cfg_set(vif, 0, WID_REKEY_PACKET_COUNT, (u8 *)&w, 4, 0, 378 0)) 379 goto fail; 380 381 b = 1; 382 if (!wilc_wlan_cfg_set(vif, 0, WID_SHORT_SLOT_ALLOWED, &b, 1, 0, 383 0)) 384 goto fail; 385 386 b = WILC_FW_ERP_PROT_SELF_CTS; 387 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_ERP_PROT_TYPE, &b, 1, 0, 0)) 388 goto fail; 389 390 b = 1; 391 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_ENABLE, &b, 1, 0, 0)) 392 goto fail; 393 394 b = WILC_FW_11N_OP_MODE_HT_MIXED; 395 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_OPERATING_MODE, &b, 1, 0, 0)) 396 goto fail; 397 398 b = 1; 399 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_TXOP_PROT_DISABLE, &b, 1, 0, 0)) 400 goto fail; 401 402 b = WILC_FW_OBBS_NONHT_DETECT_PROTECT_REPORT; 403 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_OBSS_NONHT_DETECTION, &b, 1, 404 0, 0)) 405 goto fail; 406 407 b = WILC_FW_HT_PROT_RTS_CTS_NONHT; 408 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_HT_PROT_TYPE, &b, 1, 0, 0)) 409 goto fail; 410 411 b = 0; 412 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_RIFS_PROT_ENABLE, &b, 1, 0, 413 0)) 414 goto fail; 415 416 b = 7; 417 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_CURRENT_TX_MCS, &b, 1, 0, 0)) 418 goto fail; 419 420 b = 1; 421 if (!wilc_wlan_cfg_set(vif, 0, WID_11N_IMMEDIATE_BA_ENABLED, &b, 1, 422 1, 0)) 423 goto fail; 424 425 return 0; 426 427fail: 428 return -EINVAL; 429} 430 431static void wlan_deinitialize_threads(struct net_device *dev) 432{ 433 struct wilc_vif *vif = netdev_priv(dev); 434 struct wilc *wl = vif->wilc; 435 436 wl->close = 1; 437 438 complete(&wl->txq_event); 439 440 if (wl->txq_thread) { 441 kthread_stop(wl->txq_thread); 442 wl->txq_thread = NULL; 443 } 444} 445 446static void wilc_wlan_deinitialize(struct net_device *dev) 447{ 448 struct wilc_vif *vif = netdev_priv(dev); 449 struct wilc *wl = vif->wilc; 450 451 if (!wl) { 452 netdev_err(dev, "wl is NULL\n"); 453 return; 454 } 455 456 if (wl->initialized) { 457 netdev_info(dev, "Deinitializing wilc1000...\n"); 458 459 if (!wl->dev_irq_num && 460 wl->hif_func->disable_interrupt) { 461 mutex_lock(&wl->hif_cs); 462 wl->hif_func->disable_interrupt(wl); 463 mutex_unlock(&wl->hif_cs); 464 } 465 complete(&wl->txq_event); 466 467 wlan_deinitialize_threads(dev); 468 deinit_irq(dev); 469 470 wilc_wlan_stop(wl, vif); 471 wilc_wlan_cleanup(dev); 472 473 wl->initialized = false; 474 475 netdev_dbg(dev, "wilc1000 deinitialization Done\n"); 476 } else { 477 netdev_dbg(dev, "wilc1000 is not initialized\n"); 478 } 479} 480 481static int wlan_initialize_threads(struct net_device *dev) 482{ 483 struct wilc_vif *vif = netdev_priv(dev); 484 struct wilc *wilc = vif->wilc; 485 486 wilc->txq_thread = kthread_run(wilc_txq_task, (void *)wilc, 487 "%s-tx", dev->name); 488 if (IS_ERR(wilc->txq_thread)) { 489 netdev_err(dev, "couldn't create TXQ thread\n"); 490 wilc->close = 1; 491 return PTR_ERR(wilc->txq_thread); 492 } 493 wait_for_completion(&wilc->txq_thread_started); 494 495 return 0; 496} 497 498static int wilc_wlan_initialize(struct net_device *dev, struct wilc_vif *vif) 499{ 500 int ret = 0; 501 struct wilc *wl = vif->wilc; 502 503 if (!wl->initialized) { 504 wl->mac_status = WILC_MAC_STATUS_INIT; 505 wl->close = 0; 506 507 ret = wilc_wlan_init(dev); 508 if (ret) 509 return ret; 510 511 ret = wlan_initialize_threads(dev); 512 if (ret) 513 goto fail_wilc_wlan; 514 515 if (wl->dev_irq_num && init_irq(dev)) { 516 ret = -EIO; 517 goto fail_threads; 518 } 519 520 if (!wl->dev_irq_num && 521 wl->hif_func->enable_interrupt && 522 wl->hif_func->enable_interrupt(wl)) { 523 ret = -EIO; 524 goto fail_irq_init; 525 } 526 527 ret = wilc_wlan_get_firmware(dev); 528 if (ret) 529 goto fail_irq_enable; 530 531 ret = wilc1000_firmware_download(dev); 532 if (ret) 533 goto fail_irq_enable; 534 535 ret = wilc_start_firmware(dev); 536 if (ret) 537 goto fail_irq_enable; 538 539 if (wilc_wlan_cfg_get(vif, 1, WID_FIRMWARE_VERSION, 1, 0)) { 540 int size; 541 char firmware_ver[WILC_MAX_FW_VERSION_STR_SIZE]; 542 543 size = wilc_wlan_cfg_get_val(wl, WID_FIRMWARE_VERSION, 544 firmware_ver, 545 sizeof(firmware_ver)); 546 firmware_ver[size] = '\0'; 547 netdev_dbg(dev, "Firmware Ver = %s\n", firmware_ver); 548 } 549 550 ret = wilc_init_fw_config(dev, vif); 551 if (ret) { 552 netdev_err(dev, "Failed to configure firmware\n"); 553 goto fail_fw_start; 554 } 555 wl->initialized = true; 556 return 0; 557 558fail_fw_start: 559 wilc_wlan_stop(wl, vif); 560 561fail_irq_enable: 562 if (!wl->dev_irq_num && 563 wl->hif_func->disable_interrupt) 564 wl->hif_func->disable_interrupt(wl); 565fail_irq_init: 566 if (wl->dev_irq_num) 567 deinit_irq(dev); 568fail_threads: 569 wlan_deinitialize_threads(dev); 570fail_wilc_wlan: 571 wilc_wlan_cleanup(dev); 572 netdev_err(dev, "WLAN initialization FAILED\n"); 573 } else { 574 netdev_dbg(dev, "wilc1000 already initialized\n"); 575 } 576 return ret; 577} 578 579static int mac_init_fn(struct net_device *ndev) 580{ 581 netif_start_queue(ndev); 582 netif_stop_queue(ndev); 583 584 return 0; 585} 586 587static int wilc_mac_open(struct net_device *ndev) 588{ 589 struct wilc_vif *vif = netdev_priv(ndev); 590 struct wilc *wl = vif->wilc; 591 int ret = 0; 592 struct mgmt_frame_regs mgmt_regs = {}; 593 u8 addr[ETH_ALEN] __aligned(2); 594 595 if (!wl || !wl->dev) { 596 netdev_err(ndev, "device not ready\n"); 597 return -ENODEV; 598 } 599 600 netdev_dbg(ndev, "MAC OPEN[%p]\n", ndev); 601 602 ret = wilc_init_host_int(ndev); 603 if (ret) 604 return ret; 605 606 ret = wilc_wlan_initialize(ndev, vif); 607 if (ret) { 608 wilc_deinit_host_int(ndev); 609 return ret; 610 } 611 612 wilc_set_operation_mode(vif, wilc_get_vif_idx(vif), vif->iftype, 613 vif->idx); 614 615 if (is_valid_ether_addr(ndev->dev_addr)) { 616 ether_addr_copy(addr, ndev->dev_addr); 617 wilc_set_mac_address(vif, addr); 618 } else { 619 wilc_get_mac_address(vif, addr); 620 eth_hw_addr_set(ndev, addr); 621 } 622 netdev_dbg(ndev, "Mac address: %pM\n", ndev->dev_addr); 623 624 if (!is_valid_ether_addr(ndev->dev_addr)) { 625 netdev_err(ndev, "Wrong MAC address\n"); 626 wilc_deinit_host_int(ndev); 627 wilc_wlan_deinitialize(ndev); 628 return -EINVAL; 629 } 630 631 mgmt_regs.interface_stypes = vif->mgmt_reg_stypes; 632 /* so we detect a change */ 633 vif->mgmt_reg_stypes = 0; 634 wilc_update_mgmt_frame_registrations(vif->ndev->ieee80211_ptr->wiphy, 635 vif->ndev->ieee80211_ptr, 636 &mgmt_regs); 637 netif_wake_queue(ndev); 638 wl->open_ifcs++; 639 vif->mac_opened = 1; 640 return 0; 641} 642 643static struct net_device_stats *mac_stats(struct net_device *dev) 644{ 645 struct wilc_vif *vif = netdev_priv(dev); 646 647 return &vif->netstats; 648} 649 650static int wilc_set_mac_addr(struct net_device *dev, void *p) 651{ 652 int result; 653 struct wilc_vif *vif = netdev_priv(dev); 654 struct wilc *wilc = vif->wilc; 655 struct sockaddr *addr = (struct sockaddr *)p; 656 unsigned char mac_addr[ETH_ALEN]; 657 struct wilc_vif *tmp_vif; 658 int srcu_idx; 659 660 if (!is_valid_ether_addr(addr->sa_data)) 661 return -EADDRNOTAVAIL; 662 663 if (!vif->mac_opened) { 664 eth_commit_mac_addr_change(dev, p); 665 return 0; 666 } 667 668 /* Verify MAC Address is not already in use: */ 669 670 srcu_idx = srcu_read_lock(&wilc->srcu); 671 wilc_for_each_vif(wilc, tmp_vif) { 672 wilc_get_mac_address(tmp_vif, mac_addr); 673 if (ether_addr_equal(addr->sa_data, mac_addr)) { 674 if (vif != tmp_vif) { 675 srcu_read_unlock(&wilc->srcu, srcu_idx); 676 return -EADDRNOTAVAIL; 677 } 678 srcu_read_unlock(&wilc->srcu, srcu_idx); 679 return 0; 680 } 681 } 682 srcu_read_unlock(&wilc->srcu, srcu_idx); 683 684 result = wilc_set_mac_address(vif, (u8 *)addr->sa_data); 685 if (result) 686 return result; 687 688 eth_commit_mac_addr_change(dev, p); 689 return result; 690} 691 692static void wilc_set_multicast_list(struct net_device *dev) 693{ 694 struct netdev_hw_addr *ha; 695 struct wilc_vif *vif = netdev_priv(dev); 696 int i; 697 u8 *mc_list; 698 u8 *cur_mc; 699 700 if (dev->flags & IFF_PROMISC) 701 return; 702 703 if (dev->flags & IFF_ALLMULTI || 704 dev->mc.count > WILC_MULTICAST_TABLE_SIZE) { 705 wilc_setup_multicast_filter(vif, 0, 0, NULL); 706 return; 707 } 708 709 if (dev->mc.count == 0) { 710 wilc_setup_multicast_filter(vif, 1, 0, NULL); 711 return; 712 } 713 714 mc_list = kmalloc_array(dev->mc.count, ETH_ALEN, GFP_ATOMIC); 715 if (!mc_list) 716 return; 717 718 cur_mc = mc_list; 719 i = 0; 720 netdev_for_each_mc_addr(ha, dev) { 721 memcpy(cur_mc, ha->addr, ETH_ALEN); 722 netdev_dbg(dev, "Entry[%d]: %pM\n", i, cur_mc); 723 i++; 724 cur_mc += ETH_ALEN; 725 } 726 727 if (wilc_setup_multicast_filter(vif, 1, dev->mc.count, mc_list)) 728 kfree(mc_list); 729} 730 731static void wilc_tx_complete(void *priv, int status) 732{ 733 struct tx_complete_data *pv_data = priv; 734 735 dev_kfree_skb(pv_data->skb); 736 kfree(pv_data); 737} 738 739netdev_tx_t wilc_mac_xmit(struct sk_buff *skb, struct net_device *ndev) 740{ 741 struct wilc_vif *vif = netdev_priv(ndev); 742 struct wilc *wilc = vif->wilc; 743 struct tx_complete_data *tx_data = NULL; 744 int queue_count; 745 746 if (skb->dev != ndev) { 747 netdev_err(ndev, "Packet not destined to this device\n"); 748 dev_kfree_skb(skb); 749 return NETDEV_TX_OK; 750 } 751 752 tx_data = kmalloc(sizeof(*tx_data), GFP_ATOMIC); 753 if (!tx_data) { 754 dev_kfree_skb(skb); 755 netif_wake_queue(ndev); 756 return NETDEV_TX_OK; 757 } 758 759 tx_data->buff = skb->data; 760 tx_data->size = skb->len; 761 tx_data->skb = skb; 762 763 vif->netstats.tx_packets++; 764 vif->netstats.tx_bytes += tx_data->size; 765 queue_count = wilc_wlan_txq_add_net_pkt(ndev, tx_data, 766 tx_data->buff, tx_data->size, 767 wilc_tx_complete); 768 769 if (queue_count > FLOW_CONTROL_UPPER_THRESHOLD) { 770 int srcu_idx; 771 struct wilc_vif *vif; 772 773 srcu_idx = srcu_read_lock(&wilc->srcu); 774 wilc_for_each_vif(wilc, vif) { 775 if (vif->mac_opened) 776 netif_stop_queue(vif->ndev); 777 } 778 srcu_read_unlock(&wilc->srcu, srcu_idx); 779 } 780 781 return NETDEV_TX_OK; 782} 783 784static int wilc_mac_close(struct net_device *ndev) 785{ 786 struct wilc_vif *vif = netdev_priv(ndev); 787 struct wilc *wl = vif->wilc; 788 789 netdev_dbg(ndev, "Mac close\n"); 790 791 if (wl->open_ifcs > 0) 792 wl->open_ifcs--; 793 else 794 return 0; 795 796 if (vif->ndev) { 797 netif_stop_queue(vif->ndev); 798 799 wilc_handle_disconnect(vif); 800 wilc_deinit_host_int(vif->ndev); 801 } 802 803 if (wl->open_ifcs == 0) { 804 netdev_dbg(ndev, "Deinitializing wilc1000\n"); 805 wl->close = 1; 806 wilc_wlan_deinitialize(ndev); 807 } 808 809 vif->mac_opened = 0; 810 811 return 0; 812} 813 814void wilc_frmw_to_host(struct wilc *wilc, u8 *buff, u32 size, 815 u32 pkt_offset) 816{ 817 unsigned char *buff_to_send = NULL; 818 struct net_device *wilc_netdev; 819 unsigned int frame_len = 0; 820 struct wilc_vif *vif; 821 struct sk_buff *skb; 822 int srcu_idx; 823 int stats; 824 825 if (!wilc) 826 return; 827 828 srcu_idx = srcu_read_lock(&wilc->srcu); 829 wilc_netdev = get_if_handler(wilc, buff); 830 if (!wilc_netdev) 831 goto out; 832 833 buff += pkt_offset; 834 vif = netdev_priv(wilc_netdev); 835 836 if (size > 0) { 837 frame_len = size; 838 buff_to_send = buff; 839 840 skb = dev_alloc_skb(frame_len); 841 if (!skb) 842 goto out; 843 844 skb->dev = wilc_netdev; 845 846 skb_put_data(skb, buff_to_send, frame_len); 847 848 skb->protocol = eth_type_trans(skb, wilc_netdev); 849 vif->netstats.rx_packets++; 850 vif->netstats.rx_bytes += frame_len; 851 skb->ip_summed = CHECKSUM_UNNECESSARY; 852 stats = netif_rx(skb); 853 netdev_dbg(wilc_netdev, "netif_rx ret value is: %d\n", stats); 854 } 855out: 856 srcu_read_unlock(&wilc->srcu, srcu_idx); 857} 858 859void wilc_wfi_mgmt_rx(struct wilc *wilc, u8 *buff, u32 size, bool is_auth) 860{ 861 int srcu_idx; 862 struct wilc_vif *vif; 863 864 srcu_idx = srcu_read_lock(&wilc->srcu); 865 wilc_for_each_vif(wilc, vif) { 866 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buff; 867 u16 type = le16_to_cpup((__le16 *)buff); 868 u32 type_bit = BIT(type >> 4); 869 u32 auth_bit = BIT(IEEE80211_STYPE_AUTH >> 4); 870 871 if ((vif->mgmt_reg_stypes & auth_bit && 872 ieee80211_is_auth(mgmt->frame_control)) && 873 vif->iftype == WILC_STATION_MODE && is_auth) { 874 wilc_wfi_mgmt_frame_rx(vif, buff, size); 875 break; 876 } 877 878 if (vif->priv.p2p_listen_state && 879 vif->mgmt_reg_stypes & type_bit) 880 wilc_wfi_p2p_rx(vif, buff, size); 881 882 if (vif->monitor_flag) 883 wilc_wfi_monitor_rx(wilc->monitor_dev, buff, size); 884 } 885 srcu_read_unlock(&wilc->srcu, srcu_idx); 886} 887 888static const struct net_device_ops wilc_netdev_ops = { 889 .ndo_init = mac_init_fn, 890 .ndo_open = wilc_mac_open, 891 .ndo_stop = wilc_mac_close, 892 .ndo_set_mac_address = wilc_set_mac_addr, 893 .ndo_start_xmit = wilc_mac_xmit, 894 .ndo_get_stats = mac_stats, 895 .ndo_set_rx_mode = wilc_set_multicast_list, 896}; 897 898void wilc_netdev_cleanup(struct wilc *wilc) 899{ 900 struct wilc_vif *vif, *vif_tmp; 901 902 if (!wilc) 903 return; 904 905 if (wilc->firmware) { 906 release_firmware(wilc->firmware); 907 wilc->firmware = NULL; 908 } 909 910 list_for_each_entry_safe(vif, vif_tmp, &wilc->vif_list, list) { 911 mutex_lock(&wilc->vif_mutex); 912 list_del_rcu(&vif->list); 913 wilc->vif_num--; 914 mutex_unlock(&wilc->vif_mutex); 915 synchronize_srcu(&wilc->srcu); 916 if (vif->ndev) 917 unregister_netdev(vif->ndev); 918 } 919 920 wilc_wfi_deinit_mon_interface(wilc, false); 921 destroy_workqueue(wilc->hif_workqueue); 922 923 wilc_wlan_cfg_deinit(wilc); 924 wlan_deinit_locks(wilc); 925 wiphy_unregister(wilc->wiphy); 926 wiphy_free(wilc->wiphy); 927} 928EXPORT_SYMBOL_GPL(wilc_netdev_cleanup); 929 930static u8 wilc_get_available_idx(struct wilc *wl) 931{ 932 int idx = 0; 933 struct wilc_vif *vif; 934 int srcu_idx; 935 936 srcu_idx = srcu_read_lock(&wl->srcu); 937 wilc_for_each_vif(wl, vif) { 938 if (vif->idx == 0) 939 idx = 1; 940 else 941 idx = 0; 942 } 943 srcu_read_unlock(&wl->srcu, srcu_idx); 944 return idx; 945} 946 947struct wilc_vif *wilc_netdev_ifc_init(struct wilc *wl, const char *name, 948 int vif_type, enum nl80211_iftype type, 949 bool rtnl_locked) 950{ 951 struct net_device *ndev; 952 struct wilc_vif *vif; 953 int ret; 954 955 ndev = alloc_etherdev(sizeof(*vif)); 956 if (!ndev) 957 return ERR_PTR(-ENOMEM); 958 959 vif = netdev_priv(ndev); 960 ndev->ieee80211_ptr = &vif->priv.wdev; 961 strcpy(ndev->name, name); 962 vif->wilc = wl; 963 vif->ndev = ndev; 964 ndev->ml_priv = vif; 965 966 ndev->netdev_ops = &wilc_netdev_ops; 967 968 SET_NETDEV_DEV(ndev, wiphy_dev(wl->wiphy)); 969 970 vif->priv.wdev.wiphy = wl->wiphy; 971 vif->priv.wdev.netdev = ndev; 972 vif->priv.wdev.iftype = type; 973 vif->priv.dev = ndev; 974 975 if (rtnl_locked) 976 ret = cfg80211_register_netdevice(ndev); 977 else 978 ret = register_netdev(ndev); 979 980 if (ret) { 981 ret = -EFAULT; 982 goto error; 983 } 984 985 ndev->needs_free_netdev = true; 986 vif->iftype = vif_type; 987 vif->idx = wilc_get_available_idx(wl); 988 vif->mac_opened = 0; 989 mutex_lock(&wl->vif_mutex); 990 list_add_tail_rcu(&vif->list, &wl->vif_list); 991 wl->vif_num += 1; 992 mutex_unlock(&wl->vif_mutex); 993 synchronize_srcu(&wl->srcu); 994 995 return vif; 996 997error: 998 if (rtnl_locked) 999 cfg80211_unregister_netdevice(ndev); 1000 else 1001 unregister_netdev(ndev); 1002 free_netdev(ndev); 1003 return ERR_PTR(ret); 1004} 1005 1006MODULE_DESCRIPTION("Atmel WILC1000 core wireless driver"); 1007MODULE_LICENSE("GPL"); 1008MODULE_FIRMWARE(WILC1000_FW(WILC1000_API_VER)); 1009