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