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 int 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 /* Network device ops handlers */ 183 const struct net_device_ops qtnf_netdev_ops = { 184 .ndo_open = qtnf_netdev_open, 185 .ndo_stop = qtnf_netdev_close, 186 .ndo_start_xmit = qtnf_netdev_hard_start_xmit, 187 .ndo_tx_timeout = qtnf_netdev_tx_timeout, 188 .ndo_get_stats64 = qtnf_netdev_get_stats64, 189 }; 190 191 static int qtnf_mac_init_single_band(struct wiphy *wiphy, 192 struct qtnf_wmac *mac, 193 enum nl80211_band band) 194 { 195 int ret; 196 197 wiphy->bands[band] = kzalloc(sizeof(*wiphy->bands[band]), GFP_KERNEL); 198 if (!wiphy->bands[band]) 199 return -ENOMEM; 200 201 wiphy->bands[band]->band = band; 202 203 ret = qtnf_cmd_band_info_get(mac, wiphy->bands[band]); 204 if (ret) { 205 pr_err("MAC%u: band %u: failed to get chans info: %d\n", 206 mac->macid, band, ret); 207 return ret; 208 } 209 210 qtnf_band_init_rates(wiphy->bands[band]); 211 212 return 0; 213 } 214 215 static int qtnf_mac_init_bands(struct qtnf_wmac *mac) 216 { 217 struct wiphy *wiphy = priv_to_wiphy(mac); 218 int ret = 0; 219 220 if (mac->macinfo.bands_cap & QLINK_BAND_2GHZ) { 221 ret = qtnf_mac_init_single_band(wiphy, mac, NL80211_BAND_2GHZ); 222 if (ret) 223 goto out; 224 } 225 226 if (mac->macinfo.bands_cap & QLINK_BAND_5GHZ) { 227 ret = qtnf_mac_init_single_band(wiphy, mac, NL80211_BAND_5GHZ); 228 if (ret) 229 goto out; 230 } 231 232 if (mac->macinfo.bands_cap & QLINK_BAND_60GHZ) 233 ret = qtnf_mac_init_single_band(wiphy, mac, NL80211_BAND_60GHZ); 234 235 out: 236 return ret; 237 } 238 239 struct qtnf_vif *qtnf_mac_get_free_vif(struct qtnf_wmac *mac) 240 { 241 struct qtnf_vif *vif; 242 int i; 243 244 for (i = 0; i < QTNF_MAX_INTF; i++) { 245 vif = &mac->iflist[i]; 246 if (vif->wdev.iftype == NL80211_IFTYPE_UNSPECIFIED) 247 return vif; 248 } 249 250 return NULL; 251 } 252 253 struct qtnf_vif *qtnf_mac_get_base_vif(struct qtnf_wmac *mac) 254 { 255 struct qtnf_vif *vif; 256 257 vif = &mac->iflist[QTNF_PRIMARY_VIF_IDX]; 258 259 if (vif->wdev.iftype == NL80211_IFTYPE_UNSPECIFIED) 260 return NULL; 261 262 return vif; 263 } 264 265 void qtnf_mac_iface_comb_free(struct qtnf_wmac *mac) 266 { 267 struct ieee80211_iface_combination *comb; 268 int i; 269 270 if (mac->macinfo.if_comb) { 271 for (i = 0; i < mac->macinfo.n_if_comb; i++) { 272 comb = &mac->macinfo.if_comb[i]; 273 kfree(comb->limits); 274 comb->limits = NULL; 275 } 276 277 kfree(mac->macinfo.if_comb); 278 mac->macinfo.if_comb = NULL; 279 } 280 } 281 282 static void qtnf_vif_reset_handler(struct work_struct *work) 283 { 284 struct qtnf_vif *vif = container_of(work, struct qtnf_vif, reset_work); 285 286 rtnl_lock(); 287 288 if (vif->wdev.iftype == NL80211_IFTYPE_UNSPECIFIED) { 289 rtnl_unlock(); 290 return; 291 } 292 293 /* stop tx completely */ 294 netif_tx_stop_all_queues(vif->netdev); 295 if (netif_carrier_ok(vif->netdev)) 296 netif_carrier_off(vif->netdev); 297 298 qtnf_cfg80211_vif_reset(vif); 299 300 rtnl_unlock(); 301 } 302 303 static void qtnf_mac_init_primary_intf(struct qtnf_wmac *mac) 304 { 305 struct qtnf_vif *vif = &mac->iflist[QTNF_PRIMARY_VIF_IDX]; 306 307 vif->wdev.iftype = NL80211_IFTYPE_STATION; 308 vif->bss_priority = QTNF_DEF_BSS_PRIORITY; 309 vif->wdev.wiphy = priv_to_wiphy(mac); 310 INIT_WORK(&vif->reset_work, qtnf_vif_reset_handler); 311 vif->cons_tx_timeout_cnt = 0; 312 } 313 314 static void qtnf_mac_scan_finish(struct qtnf_wmac *mac, bool aborted) 315 { 316 struct cfg80211_scan_info info = { 317 .aborted = aborted, 318 }; 319 320 mutex_lock(&mac->mac_lock); 321 322 if (mac->scan_req) { 323 cfg80211_scan_done(mac->scan_req, &info); 324 mac->scan_req = NULL; 325 } 326 327 mutex_unlock(&mac->mac_lock); 328 } 329 330 void qtnf_scan_done(struct qtnf_wmac *mac, bool aborted) 331 { 332 cancel_delayed_work_sync(&mac->scan_timeout); 333 qtnf_mac_scan_finish(mac, aborted); 334 } 335 336 static void qtnf_mac_scan_timeout(struct work_struct *work) 337 { 338 struct qtnf_wmac *mac = 339 container_of(work, struct qtnf_wmac, scan_timeout.work); 340 341 pr_warn("MAC%d: scan timed out\n", mac->macid); 342 qtnf_mac_scan_finish(mac, true); 343 } 344 345 static struct qtnf_wmac *qtnf_core_mac_alloc(struct qtnf_bus *bus, 346 unsigned int macid) 347 { 348 struct wiphy *wiphy; 349 struct qtnf_wmac *mac; 350 unsigned int i; 351 352 wiphy = qtnf_wiphy_allocate(bus); 353 if (!wiphy) 354 return ERR_PTR(-ENOMEM); 355 356 mac = wiphy_priv(wiphy); 357 358 mac->macid = macid; 359 mac->bus = bus; 360 361 for (i = 0; i < QTNF_MAX_INTF; i++) { 362 memset(&mac->iflist[i], 0, sizeof(struct qtnf_vif)); 363 mac->iflist[i].wdev.iftype = NL80211_IFTYPE_UNSPECIFIED; 364 mac->iflist[i].mac = mac; 365 mac->iflist[i].vifid = i; 366 qtnf_sta_list_init(&mac->iflist[i].sta_list); 367 mutex_init(&mac->mac_lock); 368 INIT_DELAYED_WORK(&mac->scan_timeout, qtnf_mac_scan_timeout); 369 mac->iflist[i].stats64 = 370 netdev_alloc_pcpu_stats(struct pcpu_sw_netstats); 371 if (!mac->iflist[i].stats64) 372 pr_warn("VIF%u.%u: per cpu stats allocation failed\n", 373 macid, i); 374 } 375 376 qtnf_mac_init_primary_intf(mac); 377 bus->mac[macid] = mac; 378 379 return mac; 380 } 381 382 static const struct ethtool_ops qtnf_ethtool_ops = { 383 .get_drvinfo = cfg80211_get_drvinfo, 384 }; 385 386 int qtnf_core_net_attach(struct qtnf_wmac *mac, struct qtnf_vif *vif, 387 const char *name, unsigned char name_assign_type) 388 { 389 struct wiphy *wiphy = priv_to_wiphy(mac); 390 struct net_device *dev; 391 void *qdev_vif; 392 int ret; 393 394 dev = alloc_netdev_mqs(sizeof(struct qtnf_vif *), name, 395 name_assign_type, ether_setup, 1, 1); 396 if (!dev) { 397 memset(&vif->wdev, 0, sizeof(vif->wdev)); 398 vif->wdev.iftype = NL80211_IFTYPE_UNSPECIFIED; 399 return -ENOMEM; 400 } 401 402 vif->netdev = dev; 403 404 dev->netdev_ops = &qtnf_netdev_ops; 405 dev->needs_free_netdev = true; 406 dev_net_set(dev, wiphy_net(wiphy)); 407 dev->ieee80211_ptr = &vif->wdev; 408 ether_addr_copy(dev->dev_addr, vif->mac_addr); 409 SET_NETDEV_DEV(dev, wiphy_dev(wiphy)); 410 dev->flags |= IFF_BROADCAST | IFF_MULTICAST; 411 dev->watchdog_timeo = QTNF_DEF_WDOG_TIMEOUT; 412 dev->tx_queue_len = 100; 413 dev->ethtool_ops = &qtnf_ethtool_ops; 414 415 qdev_vif = netdev_priv(dev); 416 *((void **)qdev_vif) = vif; 417 418 SET_NETDEV_DEV(dev, mac->bus->dev); 419 420 ret = register_netdevice(dev); 421 if (ret) { 422 free_netdev(dev); 423 vif->wdev.iftype = NL80211_IFTYPE_UNSPECIFIED; 424 } 425 426 return ret; 427 } 428 429 static void qtnf_core_mac_detach(struct qtnf_bus *bus, unsigned int macid) 430 { 431 struct qtnf_wmac *mac; 432 struct wiphy *wiphy; 433 struct qtnf_vif *vif; 434 unsigned int i; 435 enum nl80211_band band; 436 437 mac = bus->mac[macid]; 438 439 if (!mac) 440 return; 441 442 wiphy = priv_to_wiphy(mac); 443 444 for (i = 0; i < QTNF_MAX_INTF; i++) { 445 vif = &mac->iflist[i]; 446 rtnl_lock(); 447 if (vif->netdev && 448 vif->wdev.iftype != NL80211_IFTYPE_UNSPECIFIED) { 449 qtnf_virtual_intf_cleanup(vif->netdev); 450 qtnf_del_virtual_intf(wiphy, &vif->wdev); 451 } 452 rtnl_unlock(); 453 qtnf_sta_list_free(&vif->sta_list); 454 free_percpu(vif->stats64); 455 } 456 457 if (mac->wiphy_registered) 458 wiphy_unregister(wiphy); 459 460 for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; ++band) { 461 if (!wiphy->bands[band]) 462 continue; 463 464 kfree(wiphy->bands[band]->channels); 465 wiphy->bands[band]->n_channels = 0; 466 467 kfree(wiphy->bands[band]); 468 wiphy->bands[band] = NULL; 469 } 470 471 qtnf_mac_iface_comb_free(mac); 472 kfree(mac->macinfo.extended_capabilities); 473 kfree(mac->macinfo.extended_capabilities_mask); 474 wiphy_free(wiphy); 475 bus->mac[macid] = NULL; 476 } 477 478 static int qtnf_core_mac_attach(struct qtnf_bus *bus, unsigned int macid) 479 { 480 struct qtnf_wmac *mac; 481 struct qtnf_vif *vif; 482 int ret; 483 484 if (!(bus->hw_info.mac_bitmap & BIT(macid))) { 485 pr_info("MAC%u is not active in FW\n", macid); 486 return 0; 487 } 488 489 mac = qtnf_core_mac_alloc(bus, macid); 490 if (IS_ERR(mac)) { 491 pr_err("MAC%u allocation failed\n", macid); 492 return PTR_ERR(mac); 493 } 494 495 ret = qtnf_cmd_get_mac_info(mac); 496 if (ret) { 497 pr_err("MAC%u: failed to get info\n", macid); 498 goto error; 499 } 500 501 vif = qtnf_mac_get_base_vif(mac); 502 if (!vif) { 503 pr_err("MAC%u: primary VIF is not ready\n", macid); 504 ret = -EFAULT; 505 goto error; 506 } 507 508 ret = qtnf_cmd_send_add_intf(vif, vif->wdev.iftype, vif->mac_addr); 509 if (ret) { 510 pr_err("MAC%u: failed to add VIF\n", macid); 511 goto error; 512 } 513 514 ret = qtnf_cmd_send_get_phy_params(mac); 515 if (ret) { 516 pr_err("MAC%u: failed to get PHY settings\n", macid); 517 goto error; 518 } 519 520 ret = qtnf_mac_init_bands(mac); 521 if (ret) { 522 pr_err("MAC%u: failed to init bands\n", macid); 523 goto error; 524 } 525 526 ret = qtnf_wiphy_register(&bus->hw_info, mac); 527 if (ret) { 528 pr_err("MAC%u: wiphy registration failed\n", macid); 529 goto error; 530 } 531 532 mac->wiphy_registered = 1; 533 534 rtnl_lock(); 535 536 ret = qtnf_core_net_attach(mac, vif, "wlan%d", NET_NAME_ENUM); 537 rtnl_unlock(); 538 539 if (ret) { 540 pr_err("MAC%u: failed to attach netdev\n", macid); 541 vif->wdev.iftype = NL80211_IFTYPE_UNSPECIFIED; 542 vif->netdev = NULL; 543 goto error; 544 } 545 546 pr_debug("MAC%u initialized\n", macid); 547 548 return 0; 549 550 error: 551 qtnf_core_mac_detach(bus, macid); 552 return ret; 553 } 554 555 int qtnf_core_attach(struct qtnf_bus *bus) 556 { 557 unsigned int i; 558 int ret; 559 560 qtnf_trans_init(bus); 561 562 bus->fw_state = QTNF_FW_STATE_BOOT_DONE; 563 qtnf_bus_data_rx_start(bus); 564 565 bus->workqueue = alloc_ordered_workqueue("QTNF_BUS", 0); 566 if (!bus->workqueue) { 567 pr_err("failed to alloc main workqueue\n"); 568 ret = -ENOMEM; 569 goto error; 570 } 571 572 INIT_WORK(&bus->event_work, qtnf_event_work_handler); 573 574 ret = qtnf_cmd_send_init_fw(bus); 575 if (ret) { 576 pr_err("failed to init FW: %d\n", ret); 577 goto error; 578 } 579 580 bus->fw_state = QTNF_FW_STATE_ACTIVE; 581 582 ret = qtnf_cmd_get_hw_info(bus); 583 if (ret) { 584 pr_err("failed to get HW info: %d\n", ret); 585 goto error; 586 } 587 588 if (bus->hw_info.ql_proto_ver != QLINK_PROTO_VER) { 589 pr_err("qlink version mismatch %u != %u\n", 590 QLINK_PROTO_VER, bus->hw_info.ql_proto_ver); 591 ret = -EPROTONOSUPPORT; 592 goto error; 593 } 594 595 if (bus->hw_info.num_mac > QTNF_MAX_MAC) { 596 pr_err("no support for number of MACs=%u\n", 597 bus->hw_info.num_mac); 598 ret = -ERANGE; 599 goto error; 600 } 601 602 for (i = 0; i < bus->hw_info.num_mac; i++) { 603 ret = qtnf_core_mac_attach(bus, i); 604 605 if (ret) { 606 pr_err("MAC%u: attach failed: %d\n", i, ret); 607 goto error; 608 } 609 } 610 611 return 0; 612 613 error: 614 qtnf_core_detach(bus); 615 616 return ret; 617 } 618 EXPORT_SYMBOL_GPL(qtnf_core_attach); 619 620 void qtnf_core_detach(struct qtnf_bus *bus) 621 { 622 unsigned int macid; 623 624 qtnf_bus_data_rx_stop(bus); 625 626 for (macid = 0; macid < QTNF_MAX_MAC; macid++) 627 qtnf_core_mac_detach(bus, macid); 628 629 if (bus->fw_state == QTNF_FW_STATE_ACTIVE) 630 qtnf_cmd_send_deinit_fw(bus); 631 632 bus->fw_state = QTNF_FW_STATE_DEAD; 633 634 if (bus->workqueue) { 635 flush_workqueue(bus->workqueue); 636 destroy_workqueue(bus->workqueue); 637 } 638 639 kfree(bus->hw_info.rd); 640 bus->hw_info.rd = NULL; 641 642 qtnf_trans_free(bus); 643 } 644 EXPORT_SYMBOL_GPL(qtnf_core_detach); 645 646 static inline int qtnf_is_frame_meta_magic_valid(struct qtnf_frame_meta_info *m) 647 { 648 return m->magic_s == 0xAB && m->magic_e == 0xBA; 649 } 650 651 struct net_device *qtnf_classify_skb(struct qtnf_bus *bus, struct sk_buff *skb) 652 { 653 struct qtnf_frame_meta_info *meta; 654 struct net_device *ndev = NULL; 655 struct qtnf_wmac *mac; 656 struct qtnf_vif *vif; 657 658 meta = (struct qtnf_frame_meta_info *) 659 (skb_tail_pointer(skb) - sizeof(*meta)); 660 661 if (unlikely(!qtnf_is_frame_meta_magic_valid(meta))) { 662 pr_err_ratelimited("invalid magic 0x%x:0x%x\n", 663 meta->magic_s, meta->magic_e); 664 goto out; 665 } 666 667 if (unlikely(meta->macid >= QTNF_MAX_MAC)) { 668 pr_err_ratelimited("invalid mac(%u)\n", meta->macid); 669 goto out; 670 } 671 672 if (unlikely(meta->ifidx >= QTNF_MAX_INTF)) { 673 pr_err_ratelimited("invalid vif(%u)\n", meta->ifidx); 674 goto out; 675 } 676 677 mac = bus->mac[meta->macid]; 678 679 if (unlikely(!mac)) { 680 pr_err_ratelimited("mac(%d) does not exist\n", meta->macid); 681 goto out; 682 } 683 684 vif = &mac->iflist[meta->ifidx]; 685 686 if (unlikely(vif->wdev.iftype == NL80211_IFTYPE_UNSPECIFIED)) { 687 pr_err_ratelimited("vif(%u) does not exists\n", meta->ifidx); 688 goto out; 689 } 690 691 ndev = vif->netdev; 692 693 if (unlikely(!ndev)) { 694 pr_err_ratelimited("netdev for wlan%u.%u does not exists\n", 695 meta->macid, meta->ifidx); 696 goto out; 697 } 698 699 __skb_trim(skb, skb->len - sizeof(*meta)); 700 701 out: 702 return ndev; 703 } 704 EXPORT_SYMBOL_GPL(qtnf_classify_skb); 705 706 void qtnf_wake_all_queues(struct net_device *ndev) 707 { 708 struct qtnf_vif *vif = qtnf_netdev_get_priv(ndev); 709 struct qtnf_wmac *mac; 710 struct qtnf_bus *bus; 711 int macid; 712 int i; 713 714 if (unlikely(!vif || !vif->mac || !vif->mac->bus)) 715 return; 716 717 bus = vif->mac->bus; 718 719 for (macid = 0; macid < QTNF_MAX_MAC; macid++) { 720 if (!(bus->hw_info.mac_bitmap & BIT(macid))) 721 continue; 722 723 mac = bus->mac[macid]; 724 for (i = 0; i < QTNF_MAX_INTF; i++) { 725 vif = &mac->iflist[i]; 726 if (vif->netdev && netif_queue_stopped(vif->netdev)) 727 netif_tx_wake_all_queues(vif->netdev); 728 } 729 } 730 } 731 EXPORT_SYMBOL_GPL(qtnf_wake_all_queues); 732 733 void qtnf_update_rx_stats(struct net_device *ndev, const struct sk_buff *skb) 734 { 735 struct qtnf_vif *vif = qtnf_netdev_get_priv(ndev); 736 struct pcpu_sw_netstats *stats64; 737 738 if (unlikely(!vif || !vif->stats64)) { 739 ndev->stats.rx_packets++; 740 ndev->stats.rx_bytes += skb->len; 741 return; 742 } 743 744 stats64 = this_cpu_ptr(vif->stats64); 745 746 u64_stats_update_begin(&stats64->syncp); 747 stats64->rx_packets++; 748 stats64->rx_bytes += skb->len; 749 u64_stats_update_end(&stats64->syncp); 750 } 751 EXPORT_SYMBOL_GPL(qtnf_update_rx_stats); 752 753 void qtnf_update_tx_stats(struct net_device *ndev, const struct sk_buff *skb) 754 { 755 struct qtnf_vif *vif = qtnf_netdev_get_priv(ndev); 756 struct pcpu_sw_netstats *stats64; 757 758 if (unlikely(!vif || !vif->stats64)) { 759 ndev->stats.tx_packets++; 760 ndev->stats.tx_bytes += skb->len; 761 return; 762 } 763 764 stats64 = this_cpu_ptr(vif->stats64); 765 766 u64_stats_update_begin(&stats64->syncp); 767 stats64->tx_packets++; 768 stats64->tx_bytes += skb->len; 769 u64_stats_update_end(&stats64->syncp); 770 } 771 EXPORT_SYMBOL_GPL(qtnf_update_tx_stats); 772 773 MODULE_AUTHOR("Quantenna Communications"); 774 MODULE_DESCRIPTION("Quantenna 802.11 wireless LAN FullMAC driver."); 775 MODULE_LICENSE("GPL"); 776