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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Copyright (c) 2021 pureLiFi4 */5 6#include <linux/netdevice.h>7#include <linux/etherdevice.h>8#include <linux/slab.h>9#include <linux/usb.h>10#include <linux/jiffies.h>11#include <net/ieee80211_radiotap.h>12 13#include "chip.h"14#include "mac.h"15#include "usb.h"16 17static const struct ieee80211_rate plfxlc_rates[] = {18 { .bitrate = 10,19 .hw_value = PURELIFI_CCK_RATE_1M,20 .flags = 0 },21 { .bitrate = 20,22 .hw_value = PURELIFI_CCK_RATE_2M,23 .hw_value_short = PURELIFI_CCK_RATE_2M24 | PURELIFI_CCK_PREA_SHORT,25 .flags = IEEE80211_RATE_SHORT_PREAMBLE },26 { .bitrate = 55,27 .hw_value = PURELIFI_CCK_RATE_5_5M,28 .hw_value_short = PURELIFI_CCK_RATE_5_5M29 | PURELIFI_CCK_PREA_SHORT,30 .flags = IEEE80211_RATE_SHORT_PREAMBLE },31 { .bitrate = 110,32 .hw_value = PURELIFI_CCK_RATE_11M,33 .hw_value_short = PURELIFI_CCK_RATE_11M34 | PURELIFI_CCK_PREA_SHORT,35 .flags = IEEE80211_RATE_SHORT_PREAMBLE },36 { .bitrate = 60,37 .hw_value = PURELIFI_OFDM_RATE_6M,38 .flags = 0 },39 { .bitrate = 90,40 .hw_value = PURELIFI_OFDM_RATE_9M,41 .flags = 0 },42 { .bitrate = 120,43 .hw_value = PURELIFI_OFDM_RATE_12M,44 .flags = 0 },45 { .bitrate = 180,46 .hw_value = PURELIFI_OFDM_RATE_18M,47 .flags = 0 },48 { .bitrate = 240,49 .hw_value = PURELIFI_OFDM_RATE_24M,50 .flags = 0 },51 { .bitrate = 360,52 .hw_value = PURELIFI_OFDM_RATE_36M,53 .flags = 0 },54 { .bitrate = 480,55 .hw_value = PURELIFI_OFDM_RATE_48M,56 .flags = 0 },57 { .bitrate = 540,58 .hw_value = PURELIFI_OFDM_RATE_54M,59 .flags = 0 }60};61 62static const struct ieee80211_channel plfxlc_channels[] = {63 { .center_freq = 2412, .hw_value = 1 },64 { .center_freq = 2417, .hw_value = 2 },65 { .center_freq = 2422, .hw_value = 3 },66 { .center_freq = 2427, .hw_value = 4 },67 { .center_freq = 2432, .hw_value = 5 },68 { .center_freq = 2437, .hw_value = 6 },69 { .center_freq = 2442, .hw_value = 7 },70 { .center_freq = 2447, .hw_value = 8 },71 { .center_freq = 2452, .hw_value = 9 },72 { .center_freq = 2457, .hw_value = 10 },73 { .center_freq = 2462, .hw_value = 11 },74 { .center_freq = 2467, .hw_value = 12 },75 { .center_freq = 2472, .hw_value = 13 },76 { .center_freq = 2484, .hw_value = 14 },77};78 79int plfxlc_mac_preinit_hw(struct ieee80211_hw *hw, const u8 *hw_address)80{81 SET_IEEE80211_PERM_ADDR(hw, hw_address);82 return 0;83}84 85int plfxlc_mac_init_hw(struct ieee80211_hw *hw)86{87 struct plfxlc_mac *mac = plfxlc_hw_mac(hw);88 struct plfxlc_chip *chip = &mac->chip;89 int r;90 91 r = plfxlc_chip_init_hw(chip);92 if (r) {93 dev_warn(plfxlc_mac_dev(mac), "init hw failed (%d)\n", r);94 return r;95 }96 97 dev_dbg(plfxlc_mac_dev(mac), "irq_disabled (%d)\n", irqs_disabled());98 regulatory_hint(hw->wiphy, "00");99 return r;100}101 102void plfxlc_mac_release(struct plfxlc_mac *mac)103{104 plfxlc_chip_release(&mac->chip);105 lockdep_assert_held(&mac->lock);106}107 108int plfxlc_op_start(struct ieee80211_hw *hw)109{110 plfxlc_hw_mac(hw)->chip.usb.initialized = 1;111 return 0;112}113 114void plfxlc_op_stop(struct ieee80211_hw *hw, bool suspend)115{116 struct plfxlc_mac *mac = plfxlc_hw_mac(hw);117 118 clear_bit(PURELIFI_DEVICE_RUNNING, &mac->flags);119}120 121int plfxlc_restore_settings(struct plfxlc_mac *mac)122{123 int beacon_interval, beacon_period;124 struct sk_buff *beacon;125 126 spin_lock_irq(&mac->lock);127 beacon_interval = mac->beacon.interval;128 beacon_period = mac->beacon.period;129 spin_unlock_irq(&mac->lock);130 131 if (mac->type != NL80211_IFTYPE_ADHOC)132 return 0;133 134 if (mac->vif) {135 beacon = ieee80211_beacon_get(mac->hw, mac->vif, 0);136 if (beacon) {137 /*beacon is hardcoded in firmware */138 kfree_skb(beacon);139 /* Returned skb is used only once and lowlevel140 * driver is responsible for freeing it.141 */142 }143 }144 145 plfxlc_set_beacon_interval(&mac->chip, beacon_interval,146 beacon_period, mac->type);147 148 spin_lock_irq(&mac->lock);149 mac->beacon.last_update = jiffies;150 spin_unlock_irq(&mac->lock);151 152 return 0;153}154 155static void plfxlc_mac_tx_status(struct ieee80211_hw *hw,156 struct sk_buff *skb,157 int ackssi,158 struct tx_status *tx_status)159{160 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);161 int success = 1;162 163 ieee80211_tx_info_clear_status(info);164 if (tx_status)165 success = !tx_status->failure;166 167 if (success)168 info->flags |= IEEE80211_TX_STAT_ACK;169 else170 info->flags &= ~IEEE80211_TX_STAT_ACK;171 172 info->status.ack_signal = 50;173 ieee80211_tx_status_irqsafe(hw, skb);174}175 176void plfxlc_mac_tx_to_dev(struct sk_buff *skb, int error)177{178 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);179 struct ieee80211_hw *hw = info->rate_driver_data[0];180 struct plfxlc_mac *mac = plfxlc_hw_mac(hw);181 struct sk_buff_head *q = NULL;182 183 ieee80211_tx_info_clear_status(info);184 skb_pull(skb, sizeof(struct plfxlc_ctrlset));185 186 if (unlikely(error ||187 (info->flags & IEEE80211_TX_CTL_NO_ACK))) {188 ieee80211_tx_status_irqsafe(hw, skb);189 return;190 }191 192 q = &mac->ack_wait_queue;193 194 skb_queue_tail(q, skb);195 while (skb_queue_len(q)/* > PURELIFI_MAC_MAX_ACK_WAITERS*/) {196 plfxlc_mac_tx_status(hw, skb_dequeue(q),197 mac->ack_pending ?198 mac->ack_signal : 0,199 NULL);200 mac->ack_pending = 0;201 }202}203 204static int plfxlc_fill_ctrlset(struct plfxlc_mac *mac, struct sk_buff *skb)205{206 unsigned int frag_len = skb->len;207 struct plfxlc_ctrlset *cs;208 u32 temp_payload_len = 0;209 unsigned int tmp;210 u32 temp_len = 0;211 212 if (skb_headroom(skb) < sizeof(struct plfxlc_ctrlset)) {213 dev_dbg(plfxlc_mac_dev(mac), "Not enough hroom(1)\n");214 return 1;215 }216 217 cs = (void *)skb_push(skb, sizeof(struct plfxlc_ctrlset));218 temp_payload_len = frag_len;219 temp_len = temp_payload_len +220 sizeof(struct plfxlc_ctrlset) -221 sizeof(cs->id) - sizeof(cs->len);222 223 /* Data packet lengths must be multiple of four bytes and must224 * not be a multiple of 512 bytes. First, it is attempted to225 * append the data packet in the tailroom of the skb. In rare226 * occasions, the tailroom is too small. In this case, the227 * content of the packet is shifted into the headroom of the skb228 * by memcpy. Headroom is allocated at startup (below in this229 * file). Therefore, there will be always enough headroom. The230 * call skb_headroom is an additional safety which might be231 * dropped.232 */233 /* check if 32 bit aligned and align data */234 tmp = skb->len & 3;235 if (tmp) {236 if (skb_tailroom(skb) < (3 - tmp)) {237 if (skb_headroom(skb) >= 4 - tmp) {238 u8 len;239 u8 *src_pt;240 u8 *dest_pt;241 242 len = skb->len;243 src_pt = skb->data;244 dest_pt = skb_push(skb, 4 - tmp);245 memmove(dest_pt, src_pt, len);246 } else {247 return -ENOBUFS;248 }249 } else {250 skb_put(skb, 4 - tmp);251 }252 temp_len += 4 - tmp;253 }254 255 /* check if not multiple of 512 and align data */256 tmp = skb->len & 0x1ff;257 if (!tmp) {258 if (skb_tailroom(skb) < 4) {259 if (skb_headroom(skb) >= 4) {260 u8 len = skb->len;261 u8 *src_pt = skb->data;262 u8 *dest_pt = skb_push(skb, 4);263 264 memmove(dest_pt, src_pt, len);265 } else {266 /* should never happen because267 * sufficient headroom was reserved268 */269 return -ENOBUFS;270 }271 } else {272 skb_put(skb, 4);273 }274 temp_len += 4;275 }276 277 cs->id = cpu_to_be32(USB_REQ_DATA_TX);278 cs->len = cpu_to_be32(temp_len);279 cs->payload_len_nw = cpu_to_be32(temp_payload_len);280 281 return 0;282}283 284static void plfxlc_op_tx(struct ieee80211_hw *hw,285 struct ieee80211_tx_control *control,286 struct sk_buff *skb)287{288 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);289 struct plfxlc_header *plhdr = (void *)skb->data;290 struct plfxlc_mac *mac = plfxlc_hw_mac(hw);291 struct plfxlc_usb *usb = &mac->chip.usb;292 unsigned long flags;293 int r;294 295 r = plfxlc_fill_ctrlset(mac, skb);296 if (r)297 goto fail;298 299 info->rate_driver_data[0] = hw;300 301 if (plhdr->frametype == IEEE80211_FTYPE_DATA) {302 u8 *dst_mac = plhdr->dmac;303 u8 sidx;304 bool found = false;305 struct plfxlc_usb_tx *tx = &usb->tx;306 307 for (sidx = 0; sidx < MAX_STA_NUM; sidx++) {308 if (!(tx->station[sidx].flag & STATION_CONNECTED_FLAG))309 continue;310 if (memcmp(tx->station[sidx].mac, dst_mac, ETH_ALEN))311 continue;312 found = true;313 break;314 }315 316 /* Default to broadcast address for unknown MACs */317 if (!found)318 sidx = STA_BROADCAST_INDEX;319 320 /* Stop OS from sending packets, if the queue is half full */321 if (skb_queue_len(&tx->station[sidx].data_list) > 60)322 ieee80211_stop_queues(plfxlc_usb_to_hw(usb));323 324 /* Schedule packet for transmission if queue is not full */325 if (skb_queue_len(&tx->station[sidx].data_list) > 256)326 goto fail;327 skb_queue_tail(&tx->station[sidx].data_list, skb);328 plfxlc_send_packet_from_data_queue(usb);329 330 } else {331 spin_lock_irqsave(&usb->tx.lock, flags);332 r = plfxlc_usb_wreq_async(&mac->chip.usb, skb->data, skb->len,333 USB_REQ_DATA_TX, plfxlc_tx_urb_complete, skb);334 spin_unlock_irqrestore(&usb->tx.lock, flags);335 if (r)336 goto fail;337 }338 return;339 340fail:341 dev_kfree_skb(skb);342}343 344static int plfxlc_filter_ack(struct ieee80211_hw *hw, struct ieee80211_hdr *rx_hdr,345 struct ieee80211_rx_status *stats)346{347 struct plfxlc_mac *mac = plfxlc_hw_mac(hw);348 struct sk_buff_head *q;349 int i, position = 0;350 unsigned long flags;351 struct sk_buff *skb;352 bool found = false;353 354 if (!ieee80211_is_ack(rx_hdr->frame_control))355 return 0;356 357 dev_dbg(plfxlc_mac_dev(mac), "ACK Received\n");358 359 /* code based on zy driver, this logic may need fix */360 q = &mac->ack_wait_queue;361 spin_lock_irqsave(&q->lock, flags);362 363 skb_queue_walk(q, skb) {364 struct ieee80211_hdr *tx_hdr;365 366 position++;367 368 if (mac->ack_pending && skb_queue_is_first(q, skb))369 continue;370 if (mac->ack_pending == 0)371 break;372 373 tx_hdr = (struct ieee80211_hdr *)skb->data;374 if (likely(ether_addr_equal(tx_hdr->addr2, rx_hdr->addr1))) {375 found = 1;376 break;377 }378 }379 380 if (found) {381 for (i = 1; i < position; i++)382 skb = __skb_dequeue(q);383 if (i == position) {384 plfxlc_mac_tx_status(hw, skb,385 mac->ack_pending ?386 mac->ack_signal : 0,387 NULL);388 mac->ack_pending = 0;389 }390 391 mac->ack_pending = skb_queue_len(q) ? 1 : 0;392 mac->ack_signal = stats->signal;393 }394 395 spin_unlock_irqrestore(&q->lock, flags);396 return 1;397}398 399int plfxlc_mac_rx(struct ieee80211_hw *hw, const u8 *buffer,400 unsigned int length)401{402 struct plfxlc_mac *mac = plfxlc_hw_mac(hw);403 struct ieee80211_rx_status stats;404 const struct rx_status *status;405 unsigned int payload_length;406 struct plfxlc_usb_tx *tx;407 struct sk_buff *skb;408 int need_padding;409 __le16 fc;410 int sidx;411 412 /* Packet blockade during disabled interface. */413 if (!mac->vif)414 return 0;415 416 status = (struct rx_status *)buffer;417 418 memset(&stats, 0, sizeof(stats));419 420 stats.flag = 0;421 stats.freq = 2412;422 stats.band = NL80211_BAND_LC;423 mac->rssi = -15 * be16_to_cpu(status->rssi) / 10;424 425 stats.signal = mac->rssi;426 427 if (status->rate_idx > 7)428 stats.rate_idx = 0;429 else430 stats.rate_idx = status->rate_idx;431 432 mac->crc_errors = be64_to_cpu(status->crc_error_count);433 434 /* TODO bad frame check for CRC error*/435 if (plfxlc_filter_ack(hw, (struct ieee80211_hdr *)buffer, &stats) &&436 !mac->pass_ctrl)437 return 0;438 439 buffer += sizeof(struct rx_status);440 payload_length = get_unaligned_be32(buffer);441 442 if (payload_length > 1560) {443 dev_err(plfxlc_mac_dev(mac), " > MTU %u\n", payload_length);444 return 0;445 }446 buffer += sizeof(u32);447 448 fc = get_unaligned((__le16 *)buffer);449 need_padding = ieee80211_is_data_qos(fc) ^ ieee80211_has_a4(fc);450 451 tx = &mac->chip.usb.tx;452 453 for (sidx = 0; sidx < MAX_STA_NUM - 1; sidx++) {454 if (memcmp(&buffer[10], tx->station[sidx].mac, ETH_ALEN))455 continue;456 if (tx->station[sidx].flag & STATION_CONNECTED_FLAG) {457 tx->station[sidx].flag |= STATION_HEARTBEAT_FLAG;458 break;459 }460 }461 462 if (sidx == MAX_STA_NUM - 1) {463 for (sidx = 0; sidx < MAX_STA_NUM - 1; sidx++) {464 if (tx->station[sidx].flag & STATION_CONNECTED_FLAG)465 continue;466 memcpy(tx->station[sidx].mac, &buffer[10], ETH_ALEN);467 tx->station[sidx].flag |= STATION_CONNECTED_FLAG;468 tx->station[sidx].flag |= STATION_HEARTBEAT_FLAG;469 break;470 }471 }472 473 switch (buffer[0]) {474 case IEEE80211_STYPE_PROBE_REQ:475 dev_dbg(plfxlc_mac_dev(mac), "Probe request\n");476 break;477 case IEEE80211_STYPE_ASSOC_REQ:478 dev_dbg(plfxlc_mac_dev(mac), "Association request\n");479 break;480 case IEEE80211_STYPE_AUTH:481 dev_dbg(plfxlc_mac_dev(mac), "Authentication req\n");482 break;483 case IEEE80211_FTYPE_DATA:484 dev_dbg(plfxlc_mac_dev(mac), "802.11 data frame\n");485 break;486 }487 488 skb = dev_alloc_skb(payload_length + (need_padding ? 2 : 0));489 if (!skb)490 return -ENOMEM;491 492 if (need_padding)493 /* Make sure that the payload data is 4 byte aligned. */494 skb_reserve(skb, 2);495 496 skb_put_data(skb, buffer, payload_length);497 memcpy(IEEE80211_SKB_RXCB(skb), &stats, sizeof(stats));498 ieee80211_rx_irqsafe(hw, skb);499 return 0;500}501 502static int plfxlc_op_add_interface(struct ieee80211_hw *hw,503 struct ieee80211_vif *vif)504{505 struct plfxlc_mac *mac = plfxlc_hw_mac(hw);506 static const char * const iftype80211[] = {507 [NL80211_IFTYPE_STATION] = "Station",508 [NL80211_IFTYPE_ADHOC] = "Adhoc"509 };510 511 if (mac->type != NL80211_IFTYPE_UNSPECIFIED)512 return -EOPNOTSUPP;513 514 if (vif->type == NL80211_IFTYPE_ADHOC ||515 vif->type == NL80211_IFTYPE_STATION) {516 dev_dbg(plfxlc_mac_dev(mac), "%s %s\n", __func__,517 iftype80211[vif->type]);518 mac->type = vif->type;519 mac->vif = vif;520 return 0;521 }522 dev_dbg(plfxlc_mac_dev(mac), "unsupported iftype\n");523 return -EOPNOTSUPP;524}525 526static void plfxlc_op_remove_interface(struct ieee80211_hw *hw,527 struct ieee80211_vif *vif)528{529 struct plfxlc_mac *mac = plfxlc_hw_mac(hw);530 531 mac->type = NL80211_IFTYPE_UNSPECIFIED;532 mac->vif = NULL;533}534 535static int plfxlc_op_config(struct ieee80211_hw *hw, u32 changed)536{537 return 0;538}539 540#define SUPPORTED_FIF_FLAGS \541 (FIF_ALLMULTI | FIF_FCSFAIL | FIF_CONTROL | \542 FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC)543static void plfxlc_op_configure_filter(struct ieee80211_hw *hw,544 unsigned int changed_flags,545 unsigned int *new_flags,546 u64 multicast)547{548 struct plfxlc_mc_hash hash = {549 .low = multicast,550 .high = multicast >> 32,551 };552 struct plfxlc_mac *mac = plfxlc_hw_mac(hw);553 unsigned long flags;554 555 /* Only deal with supported flags */556 *new_flags &= SUPPORTED_FIF_FLAGS;557 558 /* If multicast parameter559 * (as returned by plfxlc_op_prepare_multicast)560 * has changed, no bit in changed_flags is set. To handle this561 * situation, we do not return if changed_flags is 0. If we do so,562 * we will have some issue with IPv6 which uses multicast for link563 * layer address resolution.564 */565 if (*new_flags & (FIF_ALLMULTI))566 plfxlc_mc_add_all(&hash);567 568 spin_lock_irqsave(&mac->lock, flags);569 mac->pass_failed_fcs = !!(*new_flags & FIF_FCSFAIL);570 mac->pass_ctrl = !!(*new_flags & FIF_CONTROL);571 mac->multicast_hash = hash;572 spin_unlock_irqrestore(&mac->lock, flags);573 574 /* no handling required for FIF_OTHER_BSS as we don't currently575 * do BSSID filtering576 */577 /* FIXME: in future it would be nice to enable the probe response578 * filter (so that the driver doesn't see them) until579 * FIF_BCN_PRBRESP_PROMISC is set. however due to atomicity here, we'd580 * have to schedule work to enable prbresp reception, which might581 * happen too late. For now we'll just listen and forward them all the582 * time.583 */584}585 586static void plfxlc_op_bss_info_changed(struct ieee80211_hw *hw,587 struct ieee80211_vif *vif,588 struct ieee80211_bss_conf *bss_conf,589 u64 changes)590{591 struct plfxlc_mac *mac = plfxlc_hw_mac(hw);592 int associated;593 594 dev_dbg(plfxlc_mac_dev(mac), "changes: %llx\n", changes);595 596 if (mac->type != NL80211_IFTYPE_ADHOC) { /* for STATION */597 associated = is_valid_ether_addr(bss_conf->bssid);598 goto exit_all;599 }600 /* for ADHOC */601 associated = true;602 if (changes & BSS_CHANGED_BEACON) {603 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif, 0);604 605 if (beacon) {606 /*beacon is hardcoded in firmware */607 kfree_skb(beacon);608 /*Returned skb is used only once and609 * low-level driver is610 * responsible for freeing it.611 */612 }613 }614 615 if (changes & BSS_CHANGED_BEACON_ENABLED) {616 u16 interval = 0;617 u8 period = 0;618 619 if (bss_conf->enable_beacon) {620 period = bss_conf->dtim_period;621 interval = bss_conf->beacon_int;622 }623 624 spin_lock_irq(&mac->lock);625 mac->beacon.period = period;626 mac->beacon.interval = interval;627 mac->beacon.last_update = jiffies;628 spin_unlock_irq(&mac->lock);629 630 plfxlc_set_beacon_interval(&mac->chip, interval,631 period, mac->type);632 }633exit_all:634 spin_lock_irq(&mac->lock);635 mac->associated = associated;636 spin_unlock_irq(&mac->lock);637}638 639static int plfxlc_get_stats(struct ieee80211_hw *hw,640 struct ieee80211_low_level_stats *stats)641{642 stats->dot11ACKFailureCount = 0;643 stats->dot11RTSFailureCount = 0;644 stats->dot11FCSErrorCount = 0;645 stats->dot11RTSSuccessCount = 0;646 return 0;647}648 649static const char et_strings[][ETH_GSTRING_LEN] = {650 "phy_rssi",651 "phy_rx_crc_err"652};653 654static int plfxlc_get_et_sset_count(struct ieee80211_hw *hw,655 struct ieee80211_vif *vif, int sset)656{657 if (sset == ETH_SS_STATS)658 return ARRAY_SIZE(et_strings);659 660 return 0;661}662 663static void plfxlc_get_et_strings(struct ieee80211_hw *hw,664 struct ieee80211_vif *vif,665 u32 sset, u8 *data)666{667 if (sset == ETH_SS_STATS)668 memcpy(data, et_strings, sizeof(et_strings));669}670 671static void plfxlc_get_et_stats(struct ieee80211_hw *hw,672 struct ieee80211_vif *vif,673 struct ethtool_stats *stats, u64 *data)674{675 struct plfxlc_mac *mac = plfxlc_hw_mac(hw);676 677 data[0] = mac->rssi;678 data[1] = mac->crc_errors;679}680 681static int plfxlc_set_rts_threshold(struct ieee80211_hw *hw, u32 value)682{683 return 0;684}685 686static const struct ieee80211_ops plfxlc_ops = {687 .add_chanctx = ieee80211_emulate_add_chanctx,688 .remove_chanctx = ieee80211_emulate_remove_chanctx,689 .change_chanctx = ieee80211_emulate_change_chanctx,690 .switch_vif_chanctx = ieee80211_emulate_switch_vif_chanctx,691 .tx = plfxlc_op_tx,692 .wake_tx_queue = ieee80211_handle_wake_tx_queue,693 .start = plfxlc_op_start,694 .stop = plfxlc_op_stop,695 .add_interface = plfxlc_op_add_interface,696 .remove_interface = plfxlc_op_remove_interface,697 .set_rts_threshold = plfxlc_set_rts_threshold,698 .config = plfxlc_op_config,699 .configure_filter = plfxlc_op_configure_filter,700 .bss_info_changed = plfxlc_op_bss_info_changed,701 .get_stats = plfxlc_get_stats,702 .get_et_sset_count = plfxlc_get_et_sset_count,703 .get_et_stats = plfxlc_get_et_stats,704 .get_et_strings = plfxlc_get_et_strings,705};706 707struct ieee80211_hw *plfxlc_mac_alloc_hw(struct usb_interface *intf)708{709 struct ieee80211_hw *hw;710 struct plfxlc_mac *mac;711 712 hw = ieee80211_alloc_hw(sizeof(struct plfxlc_mac), &plfxlc_ops);713 if (!hw) {714 dev_dbg(&intf->dev, "out of memory\n");715 return NULL;716 }717 set_wiphy_dev(hw->wiphy, &intf->dev);718 719 mac = plfxlc_hw_mac(hw);720 memset(mac, 0, sizeof(*mac));721 spin_lock_init(&mac->lock);722 mac->hw = hw;723 724 mac->type = NL80211_IFTYPE_UNSPECIFIED;725 726 memcpy(mac->channels, plfxlc_channels, sizeof(plfxlc_channels));727 memcpy(mac->rates, plfxlc_rates, sizeof(plfxlc_rates));728 mac->band.n_bitrates = ARRAY_SIZE(plfxlc_rates);729 mac->band.bitrates = mac->rates;730 mac->band.n_channels = ARRAY_SIZE(plfxlc_channels);731 mac->band.channels = mac->channels;732 hw->wiphy->bands[NL80211_BAND_LC] = &mac->band;733 hw->conf.chandef.width = NL80211_CHAN_WIDTH_20;734 735 ieee80211_hw_set(hw, RX_INCLUDES_FCS);736 ieee80211_hw_set(hw, SIGNAL_DBM);737 ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING);738 ieee80211_hw_set(hw, MFP_CAPABLE);739 740 hw->wiphy->interface_modes =741 BIT(NL80211_IFTYPE_STATION) |742 BIT(NL80211_IFTYPE_ADHOC);743 hw->max_signal = 100;744 hw->queues = 1;745 /* 4 for 32 bit alignment if no tailroom */746 hw->extra_tx_headroom = sizeof(struct plfxlc_ctrlset) + 4;747 /* Tell mac80211 that we support multi rate retries */748 hw->max_rates = IEEE80211_TX_MAX_RATES;749 hw->max_rate_tries = 18; /* 9 rates * 2 retries/rate */750 751 skb_queue_head_init(&mac->ack_wait_queue);752 mac->ack_pending = 0;753 754 plfxlc_chip_init(&mac->chip, hw, intf);755 756 SET_IEEE80211_DEV(hw, &intf->dev);757 return hw;758}759