1 // SPDX-License-Identifier: GPL-2.0+ 2 /* Copyright (c) 2015-2016 Quantenna Communications. All rights reserved. */ 3 4 #include <linux/kernel.h> 5 #include <linux/module.h> 6 #include <linux/if_ether.h> 7 8 #include "core.h" 9 #include "bus.h" 10 #include "trans.h" 11 #include "commands.h" 12 #include "cfg80211.h" 13 #include "event.h" 14 #include "util.h" 15 16 #define QTNF_DMP_MAX_LEN 48 17 #define QTNF_PRIMARY_VIF_IDX 0 18 19 struct qtnf_frame_meta_info { 20 u8 magic_s; 21 u8 ifidx; 22 u8 macid; 23 u8 magic_e; 24 } __packed; 25 26 struct qtnf_wmac *qtnf_core_get_mac(const struct qtnf_bus *bus, u8 macid) 27 { 28 struct qtnf_wmac *mac = NULL; 29 30 if (unlikely(macid >= QTNF_MAX_MAC)) { 31 pr_err("invalid MAC index %u\n", macid); 32 return NULL; 33 } 34 35 mac = bus->mac[macid]; 36 37 if (unlikely(!mac)) { 38 pr_err("MAC%u: not initialized\n", macid); 39 return NULL; 40 } 41 42 return mac; 43 } 44 45 /* Netdev handler for open. 46 */ 47 static int qtnf_netdev_open(struct net_device *ndev) 48 { 49 netif_carrier_off(ndev); 50 qtnf_netdev_updown(ndev, 1); 51 return 0; 52 } 53 54 /* Netdev handler for close. 55 */ 56 static int qtnf_netdev_close(struct net_device *ndev) 57 { 58 netif_carrier_off(ndev); 59 qtnf_virtual_intf_cleanup(ndev); 60 qtnf_netdev_updown(ndev, 0); 61 return 0; 62 } 63 64 /* Netdev handler for data transmission. 65 */ 66 static netdev_tx_t 67 qtnf_netdev_hard_start_xmit(struct sk_buff *skb, struct net_device *ndev) 68 { 69 struct qtnf_vif *vif; 70 struct qtnf_wmac *mac; 71 72 vif = qtnf_netdev_get_priv(ndev); 73 74 if (unlikely(skb->dev != ndev)) { 75 pr_err_ratelimited("invalid skb->dev"); 76 dev_kfree_skb_any(skb); 77 return 0; 78 } 79 80 if (unlikely(vif->wdev.iftype == NL80211_IFTYPE_UNSPECIFIED)) { 81 pr_err_ratelimited("%s: VIF not initialized\n", ndev->name); 82 dev_kfree_skb_any(skb); 83 return 0; 84 } 85 86 mac = vif->mac; 87 if (unlikely(!mac)) { 88 pr_err_ratelimited("%s: NULL mac pointer", ndev->name); 89 dev_kfree_skb_any(skb); 90 return 0; 91 } 92 93 if (!skb->len || (skb->len > ETH_FRAME_LEN)) { 94 pr_err_ratelimited("%s: invalid skb len %d\n", ndev->name, 95 skb->len); 96 dev_kfree_skb_any(skb); 97 ndev->stats.tx_dropped++; 98 return 0; 99 } 100 101 /* tx path is enabled: reset vif timeout */ 102 vif->cons_tx_timeout_cnt = 0; 103 104 return qtnf_bus_data_tx(mac->bus, skb); 105 } 106 107 /* Netdev handler for getting stats. 108 */ 109 static void qtnf_netdev_get_stats64(struct net_device *ndev, 110 struct rtnl_link_stats64 *stats) 111 { 112 struct qtnf_vif *vif = qtnf_netdev_get_priv(ndev); 113 unsigned int start; 114 int cpu; 115 116 netdev_stats_to_stats64(stats, &ndev->stats); 117 118 if (!vif->stats64) 119 return; 120 121 for_each_possible_cpu(cpu) { 122 struct pcpu_sw_netstats *stats64; 123 u64 rx_packets, rx_bytes; 124 u64 tx_packets, tx_bytes; 125 126 stats64 = per_cpu_ptr(vif->stats64, cpu); 127 128 do { 129 start = u64_stats_fetch_begin_irq(&stats64->syncp); 130 rx_packets = stats64->rx_packets; 131 rx_bytes = stats64->rx_bytes; 132 tx_packets = stats64->tx_packets; 133 tx_bytes = stats64->tx_bytes; 134 } while (u64_stats_fetch_retry_irq(&stats64->syncp, start)); 135 136 stats->rx_packets += rx_packets; 137 stats->rx_bytes += rx_bytes; 138 stats->tx_packets += tx_packets; 139 stats->tx_bytes += tx_bytes; 140 } 141 } 142 143 /* Netdev handler for transmission timeout. 144 */ 145 static void qtnf_netdev_tx_timeout(struct net_device *ndev) 146 { 147 struct qtnf_vif *vif = qtnf_netdev_get_priv(ndev); 148 struct qtnf_wmac *mac; 149 struct qtnf_bus *bus; 150 151 if (unlikely(!vif || !vif->mac || !vif->mac->bus)) 152 return; 153 154 mac = vif->mac; 155 bus = mac->bus; 156 157 pr_warn("VIF%u.%u: Tx timeout- %lu\n", mac->macid, vif->vifid, jiffies); 158 159 qtnf_bus_data_tx_timeout(bus, ndev); 160 ndev->stats.tx_errors++; 161 162 if (++vif->cons_tx_timeout_cnt > QTNF_TX_TIMEOUT_TRSHLD) { 163 pr_err("Tx timeout threshold exceeded !\n"); 164 pr_err("schedule interface %s reset !\n", netdev_name(ndev)); 165 queue_work(bus->workqueue, &vif->reset_work); 166 } 167 } 168 169 static int qtnf_netdev_set_mac_address(struct net_device *ndev, void *addr) 170 { 171 struct qtnf_vif *vif = qtnf_netdev_get_priv(ndev); 172 struct sockaddr *sa = addr; 173 int ret; 174 unsigned char old_addr[ETH_ALEN]; 175 176 memcpy(old_addr, sa->sa_data, sizeof(old_addr)); 177 178 ret = eth_mac_addr(ndev, sa); 179 if (ret) 180 return ret; 181 182 qtnf_scan_done(vif->mac, true); 183 184 ret = qtnf_cmd_send_change_intf_type(vif, vif->wdev.iftype, 185 vif->wdev.use_4addr, 186 sa->sa_data); 187 188 if (ret) 189 memcpy(ndev->dev_addr, old_addr, ETH_ALEN); 190 191 return ret; 192 } 193 194 /* Network device ops handlers */ 195 const struct net_device_ops qtnf_netdev_ops = { 196 .ndo_open = qtnf_netdev_open, 197 .ndo_stop = qtnf_netdev_close, 198 .ndo_start_xmit = qtnf_netdev_hard_start_xmit, 199 .ndo_tx_timeout = qtnf_netdev_tx_timeout, 200 .ndo_get_stats64 = qtnf_netdev_get_stats64, 201 .ndo_set_mac_address = qtnf_netdev_set_mac_address, 202 }; 203 204 static int qtnf_mac_init_single_band(struct wiphy *wiphy, 205 struct qtnf_wmac *mac, 206 enum nl80211_band band) 207 { 208 int ret; 209 210 wiphy->bands[band] = kzalloc(sizeof(*wiphy->bands[band]), GFP_KERNEL); 211 if (!wiphy->bands[band]) 212 return -ENOMEM; 213 214 wiphy->bands[band]->band = band; 215 216 ret = qtnf_cmd_band_info_get(mac, wiphy->bands[band]); 217 if (ret) { 218 pr_err("MAC%u: band %u: failed to get chans info: %d\n", 219 mac->macid, band, ret); 220 return ret; 221 } 222 223 qtnf_band_init_rates(wiphy->bands[band]); 224 225 return 0; 226 } 227 228 static int qtnf_mac_init_bands(struct qtnf_wmac *mac) 229 { 230 struct wiphy *wiphy = priv_to_wiphy(mac); 231 int ret = 0; 232 233 if (mac->macinfo.bands_cap & QLINK_BAND_2GHZ) { 234 ret = qtnf_mac_init_single_band(wiphy, mac, NL80211_BAND_2GHZ); 235 if (ret) 236 goto out; 237 } 238 239 if (mac->macinfo.bands_cap & QLINK_BAND_5GHZ) { 240 ret = qtnf_mac_init_single_band(wiphy, mac, NL80211_BAND_5GHZ); 241 if (ret) 242 goto out; 243 } 244 245 if (mac->macinfo.bands_cap & QLINK_BAND_60GHZ) 246 ret = qtnf_mac_init_single_band(wiphy, mac, NL80211_BAND_60GHZ); 247 248 out: 249 return ret; 250 } 251 252 struct qtnf_vif *qtnf_mac_get_free_vif(struct qtnf_wmac *mac) 253 { 254 struct qtnf_vif *vif; 255 int i; 256 257 for (i = 0; i < QTNF_MAX_INTF; i++) { 258 vif = &mac->iflist[i]; 259 if (vif->wdev.iftype == NL80211_IFTYPE_UNSPECIFIED) 260 return vif; 261 } 262 263 return NULL; 264 } 265 266 struct qtnf_vif *qtnf_mac_get_base_vif(struct qtnf_wmac *mac) 267 { 268 struct qtnf_vif *vif; 269 270 vif = &mac->iflist[QTNF_PRIMARY_VIF_IDX]; 271 272 if (vif->wdev.iftype == NL80211_IFTYPE_UNSPECIFIED) 273 return NULL; 274 275 return vif; 276 } 277 278 void qtnf_mac_iface_comb_free(struct qtnf_wmac *mac) 279 { 280 struct ieee80211_iface_combination *comb; 281 int i; 282 283 if (mac->macinfo.if_comb) { 284 for (i = 0; i < mac->macinfo.n_if_comb; i++) { 285 comb = &mac->macinfo.if_comb[i]; 286 kfree(comb->limits); 287 comb->limits = NULL; 288 } 289 290 kfree(mac->macinfo.if_comb); 291 mac->macinfo.if_comb = NULL; 292 } 293 } 294 295 void qtnf_mac_ext_caps_free(struct qtnf_wmac *mac) 296 { 297 if (mac->macinfo.extended_capabilities_len) { 298 kfree(mac->macinfo.extended_capabilities); 299 mac->macinfo.extended_capabilities = NULL; 300 301 kfree(mac->macinfo.extended_capabilities_mask); 302 mac->macinfo.extended_capabilities_mask = NULL; 303 304 mac->macinfo.extended_capabilities_len = 0; 305 } 306 } 307 308 static void qtnf_vif_reset_handler(struct work_struct *work) 309 { 310 struct qtnf_vif *vif = container_of(work, struct qtnf_vif, reset_work); 311 312 rtnl_lock(); 313 314 if (vif->wdev.iftype == NL80211_IFTYPE_UNSPECIFIED) { 315 rtnl_unlock(); 316 return; 317 } 318 319 /* stop tx completely */ 320 netif_tx_stop_all_queues(vif->netdev); 321 if (netif_carrier_ok(vif->netdev)) 322 netif_carrier_off(vif->netdev); 323 324 qtnf_cfg80211_vif_reset(vif); 325 326 rtnl_unlock(); 327 } 328 329 static void qtnf_mac_init_primary_intf(struct qtnf_wmac *mac) 330 { 331 struct qtnf_vif *vif = &mac->iflist[QTNF_PRIMARY_VIF_IDX]; 332 333 vif->wdev.iftype = NL80211_IFTYPE_STATION; 334 vif->bss_priority = QTNF_DEF_BSS_PRIORITY; 335 vif->wdev.wiphy = priv_to_wiphy(mac); 336 INIT_WORK(&vif->reset_work, qtnf_vif_reset_handler); 337 vif->cons_tx_timeout_cnt = 0; 338 } 339 340 static void qtnf_mac_scan_finish(struct qtnf_wmac *mac, bool aborted) 341 { 342 struct cfg80211_scan_info info = { 343 .aborted = aborted, 344 }; 345 346 mutex_lock(&mac->mac_lock); 347 348 if (mac->scan_req) { 349 cfg80211_scan_done(mac->scan_req, &info); 350 mac->scan_req = NULL; 351 } 352 353 mutex_unlock(&mac->mac_lock); 354 } 355 356 void qtnf_scan_done(struct qtnf_wmac *mac, bool aborted) 357 { 358 cancel_delayed_work_sync(&mac->scan_timeout); 359 qtnf_mac_scan_finish(mac, aborted); 360 } 361 362 static void qtnf_mac_scan_timeout(struct work_struct *work) 363 { 364 struct qtnf_wmac *mac = 365 container_of(work, struct qtnf_wmac, scan_timeout.work); 366 367 pr_warn("MAC%d: scan timed out\n", mac->macid); 368 qtnf_mac_scan_finish(mac, true); 369 } 370 371 static struct qtnf_wmac *qtnf_core_mac_alloc(struct qtnf_bus *bus, 372 unsigned int macid) 373 { 374 struct qtnf_vif *vif; 375 struct wiphy *wiphy; 376 struct qtnf_wmac *mac; 377 unsigned int i; 378 379 wiphy = qtnf_wiphy_allocate(bus); 380 if (!wiphy) 381 return ERR_PTR(-ENOMEM); 382 383 mac = wiphy_priv(wiphy); 384 385 mac->macid = macid; 386 mac->bus = bus; 387 mutex_init(&mac->mac_lock); 388 INIT_DELAYED_WORK(&mac->scan_timeout, qtnf_mac_scan_timeout); 389 390 for (i = 0; i < QTNF_MAX_INTF; i++) { 391 vif = &mac->iflist[i]; 392 393 memset(vif, 0, sizeof(*vif)); 394 vif->wdev.iftype = NL80211_IFTYPE_UNSPECIFIED; 395 vif->mac = mac; 396 vif->vifid = i; 397 qtnf_sta_list_init(&vif->sta_list); 398 399 vif->stats64 = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats); 400 if (!vif->stats64) 401 pr_warn("VIF%u.%u: per cpu stats allocation failed\n", 402 macid, i); 403 } 404 405 qtnf_mac_init_primary_intf(mac); 406 bus->mac[macid] = mac; 407 408 return mac; 409 } 410 411 static const struct ethtool_ops qtnf_ethtool_ops = { 412 .get_drvinfo = cfg80211_get_drvinfo, 413 }; 414 415 int qtnf_core_net_attach(struct qtnf_wmac *mac, struct qtnf_vif *vif, 416 const char *name, unsigned char name_assign_type) 417 { 418 struct wiphy *wiphy = priv_to_wiphy(mac); 419 struct net_device *dev; 420 void *qdev_vif; 421 int ret; 422 423 dev = alloc_netdev_mqs(sizeof(struct qtnf_vif *), name, 424 name_assign_type, ether_setup, 1, 1); 425 if (!dev) { 426 vif->wdev.iftype = NL80211_IFTYPE_UNSPECIFIED; 427 return -ENOMEM; 428 } 429 430 vif->netdev = dev; 431 432 dev->netdev_ops = &qtnf_netdev_ops; 433 dev->needs_free_netdev = true; 434 dev_net_set(dev, wiphy_net(wiphy)); 435 dev->ieee80211_ptr = &vif->wdev; 436 ether_addr_copy(dev->dev_addr, vif->mac_addr); 437 SET_NETDEV_DEV(dev, wiphy_dev(wiphy)); 438 dev->flags |= IFF_BROADCAST | IFF_MULTICAST; 439 dev->watchdog_timeo = QTNF_DEF_WDOG_TIMEOUT; 440 dev->tx_queue_len = 100; 441 dev->ethtool_ops = &qtnf_ethtool_ops; 442 443 qdev_vif = netdev_priv(dev); 444 *((void **)qdev_vif) = vif; 445 446 SET_NETDEV_DEV(dev, mac->bus->dev); 447 448 ret = register_netdevice(dev); 449 if (ret) { 450 free_netdev(dev); 451 vif->wdev.iftype = NL80211_IFTYPE_UNSPECIFIED; 452 } 453 454 return ret; 455 } 456 457 static void qtnf_core_mac_detach(struct qtnf_bus *bus, unsigned int macid) 458 { 459 struct qtnf_wmac *mac; 460 struct wiphy *wiphy; 461 struct qtnf_vif *vif; 462 unsigned int i; 463 enum nl80211_band band; 464 465 mac = bus->mac[macid]; 466 467 if (!mac) 468 return; 469 470 wiphy = priv_to_wiphy(mac); 471 472 for (i = 0; i < QTNF_MAX_INTF; i++) { 473 vif = &mac->iflist[i]; 474 rtnl_lock(); 475 if (vif->netdev && 476 vif->wdev.iftype != NL80211_IFTYPE_UNSPECIFIED) { 477 qtnf_virtual_intf_cleanup(vif->netdev); 478 qtnf_del_virtual_intf(wiphy, &vif->wdev); 479 } 480 rtnl_unlock(); 481 qtnf_sta_list_free(&vif->sta_list); 482 free_percpu(vif->stats64); 483 } 484 485 if (mac->wiphy_registered) 486 wiphy_unregister(wiphy); 487 488 for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; ++band) { 489 if (!wiphy->bands[band]) 490 continue; 491 492 kfree(wiphy->bands[band]->channels); 493 wiphy->bands[band]->n_channels = 0; 494 495 kfree(wiphy->bands[band]); 496 wiphy->bands[band] = NULL; 497 } 498 499 qtnf_mac_iface_comb_free(mac); 500 qtnf_mac_ext_caps_free(mac); 501 kfree(mac->macinfo.wowlan); 502 wiphy_free(wiphy); 503 bus->mac[macid] = NULL; 504 } 505 506 static int qtnf_core_mac_attach(struct qtnf_bus *bus, unsigned int macid) 507 { 508 struct qtnf_wmac *mac; 509 struct qtnf_vif *vif; 510 int ret; 511 512 if (!(bus->hw_info.mac_bitmap & BIT(macid))) { 513 pr_info("MAC%u is not active in FW\n", macid); 514 return 0; 515 } 516 517 mac = qtnf_core_mac_alloc(bus, macid); 518 if (IS_ERR(mac)) { 519 pr_err("MAC%u allocation failed\n", macid); 520 return PTR_ERR(mac); 521 } 522 523 ret = qtnf_cmd_get_mac_info(mac); 524 if (ret) { 525 pr_err("MAC%u: failed to get info\n", macid); 526 goto error; 527 } 528 529 vif = qtnf_mac_get_base_vif(mac); 530 if (!vif) { 531 pr_err("MAC%u: primary VIF is not ready\n", macid); 532 ret = -EFAULT; 533 goto error; 534 } 535 536 ret = qtnf_cmd_send_add_intf(vif, vif->wdev.iftype, 537 vif->wdev.use_4addr, vif->mac_addr); 538 if (ret) { 539 pr_err("MAC%u: failed to add VIF\n", macid); 540 goto error; 541 } 542 543 ret = qtnf_cmd_send_get_phy_params(mac); 544 if (ret) { 545 pr_err("MAC%u: failed to get PHY settings\n", macid); 546 goto error; 547 } 548 549 ret = qtnf_mac_init_bands(mac); 550 if (ret) { 551 pr_err("MAC%u: failed to init bands\n", macid); 552 goto error; 553 } 554 555 ret = qtnf_wiphy_register(&bus->hw_info, mac); 556 if (ret) { 557 pr_err("MAC%u: wiphy registration failed\n", macid); 558 goto error; 559 } 560 561 mac->wiphy_registered = 1; 562 563 rtnl_lock(); 564 565 ret = qtnf_core_net_attach(mac, vif, "wlan%d", NET_NAME_ENUM); 566 rtnl_unlock(); 567 568 if (ret) { 569 pr_err("MAC%u: failed to attach netdev\n", macid); 570 vif->wdev.iftype = NL80211_IFTYPE_UNSPECIFIED; 571 vif->netdev = NULL; 572 goto error; 573 } 574 575 pr_debug("MAC%u initialized\n", macid); 576 577 return 0; 578 579 error: 580 qtnf_core_mac_detach(bus, macid); 581 return ret; 582 } 583 584 int qtnf_core_attach(struct qtnf_bus *bus) 585 { 586 unsigned int i; 587 int ret; 588 589 qtnf_trans_init(bus); 590 591 bus->fw_state = QTNF_FW_STATE_BOOT_DONE; 592 qtnf_bus_data_rx_start(bus); 593 594 bus->workqueue = alloc_ordered_workqueue("QTNF_BUS", 0); 595 if (!bus->workqueue) { 596 pr_err("failed to alloc main workqueue\n"); 597 ret = -ENOMEM; 598 goto error; 599 } 600 601 INIT_WORK(&bus->event_work, qtnf_event_work_handler); 602 603 ret = qtnf_cmd_send_init_fw(bus); 604 if (ret) { 605 pr_err("failed to init FW: %d\n", ret); 606 goto error; 607 } 608 609 bus->fw_state = QTNF_FW_STATE_ACTIVE; 610 611 ret = qtnf_cmd_get_hw_info(bus); 612 if (ret) { 613 pr_err("failed to get HW info: %d\n", ret); 614 goto error; 615 } 616 617 if (bus->hw_info.ql_proto_ver != QLINK_PROTO_VER) { 618 pr_err("qlink version mismatch %u != %u\n", 619 QLINK_PROTO_VER, bus->hw_info.ql_proto_ver); 620 ret = -EPROTONOSUPPORT; 621 goto error; 622 } 623 624 if (bus->hw_info.num_mac > QTNF_MAX_MAC) { 625 pr_err("no support for number of MACs=%u\n", 626 bus->hw_info.num_mac); 627 ret = -ERANGE; 628 goto error; 629 } 630 631 for (i = 0; i < bus->hw_info.num_mac; i++) { 632 ret = qtnf_core_mac_attach(bus, i); 633 634 if (ret) { 635 pr_err("MAC%u: attach failed: %d\n", i, ret); 636 goto error; 637 } 638 } 639 640 return 0; 641 642 error: 643 qtnf_core_detach(bus); 644 645 return ret; 646 } 647 EXPORT_SYMBOL_GPL(qtnf_core_attach); 648 649 void qtnf_core_detach(struct qtnf_bus *bus) 650 { 651 unsigned int macid; 652 653 qtnf_bus_data_rx_stop(bus); 654 655 for (macid = 0; macid < QTNF_MAX_MAC; macid++) 656 qtnf_core_mac_detach(bus, macid); 657 658 if (bus->fw_state == QTNF_FW_STATE_ACTIVE) 659 qtnf_cmd_send_deinit_fw(bus); 660 661 bus->fw_state = QTNF_FW_STATE_DETACHED; 662 663 if (bus->workqueue) { 664 flush_workqueue(bus->workqueue); 665 destroy_workqueue(bus->workqueue); 666 } 667 668 kfree(bus->hw_info.rd); 669 bus->hw_info.rd = NULL; 670 671 qtnf_trans_free(bus); 672 } 673 EXPORT_SYMBOL_GPL(qtnf_core_detach); 674 675 static inline int qtnf_is_frame_meta_magic_valid(struct qtnf_frame_meta_info *m) 676 { 677 return m->magic_s == 0xAB && m->magic_e == 0xBA; 678 } 679 680 struct net_device *qtnf_classify_skb(struct qtnf_bus *bus, struct sk_buff *skb) 681 { 682 struct qtnf_frame_meta_info *meta; 683 struct net_device *ndev = NULL; 684 struct qtnf_wmac *mac; 685 struct qtnf_vif *vif; 686 687 meta = (struct qtnf_frame_meta_info *) 688 (skb_tail_pointer(skb) - sizeof(*meta)); 689 690 if (unlikely(!qtnf_is_frame_meta_magic_valid(meta))) { 691 pr_err_ratelimited("invalid magic 0x%x:0x%x\n", 692 meta->magic_s, meta->magic_e); 693 goto out; 694 } 695 696 if (unlikely(meta->macid >= QTNF_MAX_MAC)) { 697 pr_err_ratelimited("invalid mac(%u)\n", meta->macid); 698 goto out; 699 } 700 701 if (unlikely(meta->ifidx >= QTNF_MAX_INTF)) { 702 pr_err_ratelimited("invalid vif(%u)\n", meta->ifidx); 703 goto out; 704 } 705 706 mac = bus->mac[meta->macid]; 707 708 if (unlikely(!mac)) { 709 pr_err_ratelimited("mac(%d) does not exist\n", meta->macid); 710 goto out; 711 } 712 713 vif = &mac->iflist[meta->ifidx]; 714 715 if (unlikely(vif->wdev.iftype == NL80211_IFTYPE_UNSPECIFIED)) { 716 pr_err_ratelimited("vif(%u) does not exists\n", meta->ifidx); 717 goto out; 718 } 719 720 ndev = vif->netdev; 721 722 if (unlikely(!ndev)) { 723 pr_err_ratelimited("netdev for wlan%u.%u does not exists\n", 724 meta->macid, meta->ifidx); 725 goto out; 726 } 727 728 __skb_trim(skb, skb->len - sizeof(*meta)); 729 730 out: 731 return ndev; 732 } 733 EXPORT_SYMBOL_GPL(qtnf_classify_skb); 734 735 void qtnf_wake_all_queues(struct net_device *ndev) 736 { 737 struct qtnf_vif *vif = qtnf_netdev_get_priv(ndev); 738 struct qtnf_wmac *mac; 739 struct qtnf_bus *bus; 740 int macid; 741 int i; 742 743 if (unlikely(!vif || !vif->mac || !vif->mac->bus)) 744 return; 745 746 bus = vif->mac->bus; 747 748 for (macid = 0; macid < QTNF_MAX_MAC; macid++) { 749 if (!(bus->hw_info.mac_bitmap & BIT(macid))) 750 continue; 751 752 mac = bus->mac[macid]; 753 for (i = 0; i < QTNF_MAX_INTF; i++) { 754 vif = &mac->iflist[i]; 755 if (vif->netdev && netif_queue_stopped(vif->netdev)) 756 netif_tx_wake_all_queues(vif->netdev); 757 } 758 } 759 } 760 EXPORT_SYMBOL_GPL(qtnf_wake_all_queues); 761 762 void qtnf_update_rx_stats(struct net_device *ndev, const struct sk_buff *skb) 763 { 764 struct qtnf_vif *vif = qtnf_netdev_get_priv(ndev); 765 struct pcpu_sw_netstats *stats64; 766 767 if (unlikely(!vif || !vif->stats64)) { 768 ndev->stats.rx_packets++; 769 ndev->stats.rx_bytes += skb->len; 770 return; 771 } 772 773 stats64 = this_cpu_ptr(vif->stats64); 774 775 u64_stats_update_begin(&stats64->syncp); 776 stats64->rx_packets++; 777 stats64->rx_bytes += skb->len; 778 u64_stats_update_end(&stats64->syncp); 779 } 780 EXPORT_SYMBOL_GPL(qtnf_update_rx_stats); 781 782 void qtnf_update_tx_stats(struct net_device *ndev, const struct sk_buff *skb) 783 { 784 struct qtnf_vif *vif = qtnf_netdev_get_priv(ndev); 785 struct pcpu_sw_netstats *stats64; 786 787 if (unlikely(!vif || !vif->stats64)) { 788 ndev->stats.tx_packets++; 789 ndev->stats.tx_bytes += skb->len; 790 return; 791 } 792 793 stats64 = this_cpu_ptr(vif->stats64); 794 795 u64_stats_update_begin(&stats64->syncp); 796 stats64->tx_packets++; 797 stats64->tx_bytes += skb->len; 798 u64_stats_update_end(&stats64->syncp); 799 } 800 EXPORT_SYMBOL_GPL(qtnf_update_tx_stats); 801 802 MODULE_AUTHOR("Quantenna Communications"); 803 MODULE_DESCRIPTION("Quantenna 802.11 wireless LAN FullMAC driver."); 804 MODULE_LICENSE("GPL"); 805