1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (c) 2021 pureLiFi 4 */ 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 17 static 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_2M 24 | 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_5M 29 | 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_11M 34 | 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 62 static 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 79 int 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 85 int 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 } 101 102 int plfxlc_op_start(struct ieee80211_hw *hw) 103 { 104 plfxlc_hw_mac(hw)->chip.usb.initialized = 1; 105 return 0; 106 } 107 108 void plfxlc_op_stop(struct ieee80211_hw *hw, bool suspend) 109 { 110 struct plfxlc_mac *mac = plfxlc_hw_mac(hw); 111 112 clear_bit(PURELIFI_DEVICE_RUNNING, &mac->flags); 113 } 114 115 int plfxlc_restore_settings(struct plfxlc_mac *mac) 116 { 117 int beacon_interval, beacon_period; 118 struct sk_buff *beacon; 119 120 spin_lock_irq(&mac->lock); 121 beacon_interval = mac->beacon.interval; 122 beacon_period = mac->beacon.period; 123 spin_unlock_irq(&mac->lock); 124 125 if (mac->type != NL80211_IFTYPE_ADHOC) 126 return 0; 127 128 if (mac->vif) { 129 beacon = ieee80211_beacon_get(mac->hw, mac->vif, 0); 130 if (beacon) { 131 /*beacon is hardcoded in firmware */ 132 kfree_skb(beacon); 133 /* Returned skb is used only once and lowlevel 134 * driver is responsible for freeing it. 135 */ 136 } 137 } 138 139 plfxlc_set_beacon_interval(&mac->chip, beacon_interval, 140 beacon_period, mac->type); 141 142 spin_lock_irq(&mac->lock); 143 mac->beacon.last_update = jiffies; 144 spin_unlock_irq(&mac->lock); 145 146 return 0; 147 } 148 149 static void plfxlc_mac_tx_status(struct ieee80211_hw *hw, 150 struct sk_buff *skb, 151 int ackssi, 152 struct tx_status *tx_status) 153 { 154 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 155 int success = 1; 156 157 ieee80211_tx_info_clear_status(info); 158 if (tx_status) 159 success = !tx_status->failure; 160 161 if (success) 162 info->flags |= IEEE80211_TX_STAT_ACK; 163 else 164 info->flags &= ~IEEE80211_TX_STAT_ACK; 165 166 info->status.ack_signal = 50; 167 ieee80211_tx_status_irqsafe(hw, skb); 168 } 169 170 void plfxlc_mac_tx_to_dev(struct sk_buff *skb, int error) 171 { 172 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 173 struct ieee80211_hw *hw = info->rate_driver_data[0]; 174 struct plfxlc_mac *mac = plfxlc_hw_mac(hw); 175 struct sk_buff_head *q = NULL; 176 177 ieee80211_tx_info_clear_status(info); 178 skb_pull(skb, sizeof(struct plfxlc_ctrlset)); 179 180 if (unlikely(error || 181 (info->flags & IEEE80211_TX_CTL_NO_ACK))) { 182 ieee80211_tx_status_irqsafe(hw, skb); 183 return; 184 } 185 186 q = &mac->ack_wait_queue; 187 188 skb_queue_tail(q, skb); 189 while (skb_queue_len(q)/* > PURELIFI_MAC_MAX_ACK_WAITERS*/) { 190 plfxlc_mac_tx_status(hw, skb_dequeue(q), 191 mac->ack_pending ? 192 mac->ack_signal : 0, 193 NULL); 194 mac->ack_pending = 0; 195 } 196 } 197 198 static int plfxlc_fill_ctrlset(struct plfxlc_mac *mac, struct sk_buff *skb) 199 { 200 unsigned int frag_len = skb->len; 201 struct plfxlc_ctrlset *cs; 202 u32 temp_payload_len = 0; 203 unsigned int tmp; 204 u32 temp_len = 0; 205 206 if (skb_headroom(skb) < sizeof(struct plfxlc_ctrlset)) { 207 dev_dbg(plfxlc_mac_dev(mac), "Not enough hroom(1)\n"); 208 return 1; 209 } 210 211 cs = (void *)skb_push(skb, sizeof(struct plfxlc_ctrlset)); 212 temp_payload_len = frag_len; 213 temp_len = temp_payload_len + 214 sizeof(struct plfxlc_ctrlset) - 215 sizeof(cs->id) - sizeof(cs->len); 216 217 /* Data packet lengths must be multiple of four bytes and must 218 * not be a multiple of 512 bytes. First, it is attempted to 219 * append the data packet in the tailroom of the skb. In rare 220 * occasions, the tailroom is too small. In this case, the 221 * content of the packet is shifted into the headroom of the skb 222 * by memcpy. Headroom is allocated at startup (below in this 223 * file). Therefore, there will be always enough headroom. The 224 * call skb_headroom is an additional safety which might be 225 * dropped. 226 */ 227 /* check if 32 bit aligned and align data */ 228 tmp = skb->len & 3; 229 if (tmp) { 230 if (skb_tailroom(skb) < (3 - tmp)) { 231 if (skb_headroom(skb) >= 4 - tmp) { 232 u8 len; 233 u8 *src_pt; 234 u8 *dest_pt; 235 236 len = skb->len; 237 src_pt = skb->data; 238 dest_pt = skb_push(skb, 4 - tmp); 239 memmove(dest_pt, src_pt, len); 240 } else { 241 return -ENOBUFS; 242 } 243 } else { 244 skb_put(skb, 4 - tmp); 245 } 246 temp_len += 4 - tmp; 247 } 248 249 /* check if not multiple of 512 and align data */ 250 tmp = skb->len & 0x1ff; 251 if (!tmp) { 252 if (skb_tailroom(skb) < 4) { 253 if (skb_headroom(skb) >= 4) { 254 u8 len = skb->len; 255 u8 *src_pt = skb->data; 256 u8 *dest_pt = skb_push(skb, 4); 257 258 memmove(dest_pt, src_pt, len); 259 } else { 260 /* should never happen because 261 * sufficient headroom was reserved 262 */ 263 return -ENOBUFS; 264 } 265 } else { 266 skb_put(skb, 4); 267 } 268 temp_len += 4; 269 } 270 271 cs->id = cpu_to_be32(USB_REQ_DATA_TX); 272 cs->len = cpu_to_be32(temp_len); 273 cs->payload_len_nw = cpu_to_be32(temp_payload_len); 274 275 return 0; 276 } 277 278 static void plfxlc_op_tx(struct ieee80211_hw *hw, 279 struct ieee80211_tx_control *control, 280 struct sk_buff *skb) 281 { 282 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 283 struct plfxlc_header *plhdr = (void *)skb->data; 284 struct plfxlc_mac *mac = plfxlc_hw_mac(hw); 285 struct plfxlc_usb *usb = &mac->chip.usb; 286 unsigned long flags; 287 int r; 288 289 r = plfxlc_fill_ctrlset(mac, skb); 290 if (r) 291 goto fail; 292 293 info->rate_driver_data[0] = hw; 294 295 if (plhdr->frametype == IEEE80211_FTYPE_DATA) { 296 u8 *dst_mac = plhdr->dmac; 297 u8 sidx; 298 bool found = false; 299 struct plfxlc_usb_tx *tx = &usb->tx; 300 301 for (sidx = 0; sidx < MAX_STA_NUM; sidx++) { 302 if (!(tx->station[sidx].flag & STATION_CONNECTED_FLAG)) 303 continue; 304 if (memcmp(tx->station[sidx].mac, dst_mac, ETH_ALEN)) 305 continue; 306 found = true; 307 break; 308 } 309 310 /* Default to broadcast address for unknown MACs */ 311 if (!found) 312 sidx = STA_BROADCAST_INDEX; 313 314 /* Stop OS from sending packets, if the queue is half full */ 315 if (skb_queue_len(&tx->station[sidx].data_list) > 60) 316 ieee80211_stop_queues(plfxlc_usb_to_hw(usb)); 317 318 /* Schedule packet for transmission if queue is not full */ 319 if (skb_queue_len(&tx->station[sidx].data_list) > 256) 320 goto fail; 321 skb_queue_tail(&tx->station[sidx].data_list, skb); 322 plfxlc_send_packet_from_data_queue(usb); 323 324 } else { 325 spin_lock_irqsave(&usb->tx.lock, flags); 326 r = plfxlc_usb_wreq_async(&mac->chip.usb, skb->data, skb->len, 327 USB_REQ_DATA_TX, plfxlc_tx_urb_complete, skb); 328 spin_unlock_irqrestore(&usb->tx.lock, flags); 329 if (r) 330 goto fail; 331 } 332 return; 333 334 fail: 335 dev_kfree_skb(skb); 336 } 337 338 static int plfxlc_filter_ack(struct ieee80211_hw *hw, struct ieee80211_hdr *rx_hdr, 339 struct ieee80211_rx_status *stats) 340 { 341 struct plfxlc_mac *mac = plfxlc_hw_mac(hw); 342 struct sk_buff_head *q; 343 int i, position = 0; 344 unsigned long flags; 345 struct sk_buff *skb; 346 bool found = false; 347 348 if (!ieee80211_is_ack(rx_hdr->frame_control)) 349 return 0; 350 351 dev_dbg(plfxlc_mac_dev(mac), "ACK Received\n"); 352 353 /* code based on zy driver, this logic may need fix */ 354 q = &mac->ack_wait_queue; 355 spin_lock_irqsave(&q->lock, flags); 356 357 skb_queue_walk(q, skb) { 358 struct ieee80211_hdr *tx_hdr; 359 360 position++; 361 362 if (mac->ack_pending && skb_queue_is_first(q, skb)) 363 continue; 364 if (mac->ack_pending == 0) 365 break; 366 367 tx_hdr = (struct ieee80211_hdr *)skb->data; 368 if (likely(ether_addr_equal(tx_hdr->addr2, rx_hdr->addr1))) { 369 found = 1; 370 break; 371 } 372 } 373 374 if (found) { 375 for (i = 1; i < position; i++) 376 skb = __skb_dequeue(q); 377 if (i == position) { 378 plfxlc_mac_tx_status(hw, skb, 379 mac->ack_pending ? 380 mac->ack_signal : 0, 381 NULL); 382 mac->ack_pending = 0; 383 } 384 385 mac->ack_pending = skb_queue_len(q) ? 1 : 0; 386 mac->ack_signal = stats->signal; 387 } 388 389 spin_unlock_irqrestore(&q->lock, flags); 390 return 1; 391 } 392 393 int plfxlc_mac_rx(struct ieee80211_hw *hw, const u8 *buffer, 394 unsigned int length) 395 { 396 struct plfxlc_mac *mac = plfxlc_hw_mac(hw); 397 struct ieee80211_rx_status stats; 398 const struct rx_status *status; 399 unsigned int payload_length; 400 struct plfxlc_usb_tx *tx; 401 struct sk_buff *skb; 402 int need_padding; 403 __le16 fc; 404 int sidx; 405 406 /* Packet blockade during disabled interface. */ 407 if (!mac->vif) 408 return 0; 409 410 status = (struct rx_status *)buffer; 411 412 memset(&stats, 0, sizeof(stats)); 413 414 stats.flag = 0; 415 stats.freq = 2412; 416 stats.band = NL80211_BAND_LC; 417 mac->rssi = -15 * be16_to_cpu(status->rssi) / 10; 418 419 stats.signal = mac->rssi; 420 421 if (status->rate_idx > 7) 422 stats.rate_idx = 0; 423 else 424 stats.rate_idx = status->rate_idx; 425 426 mac->crc_errors = be64_to_cpu(status->crc_error_count); 427 428 /* TODO bad frame check for CRC error*/ 429 if (plfxlc_filter_ack(hw, (struct ieee80211_hdr *)buffer, &stats) && 430 !mac->pass_ctrl) 431 return 0; 432 433 buffer += sizeof(struct rx_status); 434 payload_length = get_unaligned_be32(buffer); 435 436 if (payload_length > 1560) { 437 dev_err(plfxlc_mac_dev(mac), " > MTU %u\n", payload_length); 438 return 0; 439 } 440 buffer += sizeof(u32); 441 442 fc = get_unaligned((__le16 *)buffer); 443 need_padding = ieee80211_is_data_qos(fc) ^ ieee80211_has_a4(fc); 444 445 tx = &mac->chip.usb.tx; 446 447 for (sidx = 0; sidx < MAX_STA_NUM - 1; sidx++) { 448 if (memcmp(&buffer[10], tx->station[sidx].mac, ETH_ALEN)) 449 continue; 450 if (tx->station[sidx].flag & STATION_CONNECTED_FLAG) { 451 tx->station[sidx].flag |= STATION_HEARTBEAT_FLAG; 452 break; 453 } 454 } 455 456 if (sidx == MAX_STA_NUM - 1) { 457 for (sidx = 0; sidx < MAX_STA_NUM - 1; sidx++) { 458 if (tx->station[sidx].flag & STATION_CONNECTED_FLAG) 459 continue; 460 memcpy(tx->station[sidx].mac, &buffer[10], ETH_ALEN); 461 tx->station[sidx].flag |= STATION_CONNECTED_FLAG; 462 tx->station[sidx].flag |= STATION_HEARTBEAT_FLAG; 463 break; 464 } 465 } 466 467 switch (buffer[0]) { 468 case IEEE80211_STYPE_PROBE_REQ: 469 dev_dbg(plfxlc_mac_dev(mac), "Probe request\n"); 470 break; 471 case IEEE80211_STYPE_ASSOC_REQ: 472 dev_dbg(plfxlc_mac_dev(mac), "Association request\n"); 473 break; 474 case IEEE80211_STYPE_AUTH: 475 dev_dbg(plfxlc_mac_dev(mac), "Authentication req\n"); 476 break; 477 case IEEE80211_FTYPE_DATA: 478 dev_dbg(plfxlc_mac_dev(mac), "802.11 data frame\n"); 479 break; 480 } 481 482 skb = dev_alloc_skb(payload_length + (need_padding ? 2 : 0)); 483 if (!skb) 484 return -ENOMEM; 485 486 if (need_padding) 487 /* Make sure that the payload data is 4 byte aligned. */ 488 skb_reserve(skb, 2); 489 490 skb_put_data(skb, buffer, payload_length); 491 memcpy(IEEE80211_SKB_RXCB(skb), &stats, sizeof(stats)); 492 ieee80211_rx_irqsafe(hw, skb); 493 return 0; 494 } 495 496 static int plfxlc_op_add_interface(struct ieee80211_hw *hw, 497 struct ieee80211_vif *vif) 498 { 499 struct plfxlc_mac *mac = plfxlc_hw_mac(hw); 500 static const char * const iftype80211[] = { 501 [NL80211_IFTYPE_STATION] = "Station", 502 [NL80211_IFTYPE_ADHOC] = "Adhoc" 503 }; 504 505 if (mac->type != NL80211_IFTYPE_UNSPECIFIED) 506 return -EOPNOTSUPP; 507 508 if (vif->type == NL80211_IFTYPE_ADHOC || 509 vif->type == NL80211_IFTYPE_STATION) { 510 dev_dbg(plfxlc_mac_dev(mac), "%s %s\n", __func__, 511 iftype80211[vif->type]); 512 mac->type = vif->type; 513 mac->vif = vif; 514 return 0; 515 } 516 dev_dbg(plfxlc_mac_dev(mac), "unsupported iftype\n"); 517 return -EOPNOTSUPP; 518 } 519 520 static void plfxlc_op_remove_interface(struct ieee80211_hw *hw, 521 struct ieee80211_vif *vif) 522 { 523 struct plfxlc_mac *mac = plfxlc_hw_mac(hw); 524 525 mac->type = NL80211_IFTYPE_UNSPECIFIED; 526 mac->vif = NULL; 527 } 528 529 static int plfxlc_op_config(struct ieee80211_hw *hw, int radio_idx, u32 changed) 530 { 531 return 0; 532 } 533 534 #define SUPPORTED_FIF_FLAGS \ 535 (FIF_ALLMULTI | FIF_FCSFAIL | FIF_CONTROL | \ 536 FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC) 537 static void plfxlc_op_configure_filter(struct ieee80211_hw *hw, 538 unsigned int changed_flags, 539 unsigned int *new_flags, 540 u64 multicast) 541 { 542 struct plfxlc_mc_hash hash = { 543 .low = multicast, 544 .high = multicast >> 32, 545 }; 546 struct plfxlc_mac *mac = plfxlc_hw_mac(hw); 547 unsigned long flags; 548 549 /* Only deal with supported flags */ 550 *new_flags &= SUPPORTED_FIF_FLAGS; 551 552 /* If multicast parameter 553 * (as returned by plfxlc_op_prepare_multicast) 554 * has changed, no bit in changed_flags is set. To handle this 555 * situation, we do not return if changed_flags is 0. If we do so, 556 * we will have some issue with IPv6 which uses multicast for link 557 * layer address resolution. 558 */ 559 if (*new_flags & (FIF_ALLMULTI)) 560 plfxlc_mc_add_all(&hash); 561 562 spin_lock_irqsave(&mac->lock, flags); 563 mac->pass_failed_fcs = !!(*new_flags & FIF_FCSFAIL); 564 mac->pass_ctrl = !!(*new_flags & FIF_CONTROL); 565 mac->multicast_hash = hash; 566 spin_unlock_irqrestore(&mac->lock, flags); 567 568 /* no handling required for FIF_OTHER_BSS as we don't currently 569 * do BSSID filtering 570 */ 571 /* FIXME: in future it would be nice to enable the probe response 572 * filter (so that the driver doesn't see them) until 573 * FIF_BCN_PRBRESP_PROMISC is set. however due to atomicity here, we'd 574 * have to schedule work to enable prbresp reception, which might 575 * happen too late. For now we'll just listen and forward them all the 576 * time. 577 */ 578 } 579 580 static void plfxlc_op_bss_info_changed(struct ieee80211_hw *hw, 581 struct ieee80211_vif *vif, 582 struct ieee80211_bss_conf *bss_conf, 583 u64 changes) 584 { 585 struct plfxlc_mac *mac = plfxlc_hw_mac(hw); 586 int associated; 587 588 dev_dbg(plfxlc_mac_dev(mac), "changes: %llx\n", changes); 589 590 if (mac->type != NL80211_IFTYPE_ADHOC) { /* for STATION */ 591 associated = is_valid_ether_addr(bss_conf->bssid); 592 goto exit_all; 593 } 594 /* for ADHOC */ 595 associated = true; 596 if (changes & BSS_CHANGED_BEACON) { 597 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif, 0); 598 599 if (beacon) { 600 /*beacon is hardcoded in firmware */ 601 kfree_skb(beacon); 602 /*Returned skb is used only once and 603 * low-level driver is 604 * responsible for freeing it. 605 */ 606 } 607 } 608 609 if (changes & BSS_CHANGED_BEACON_ENABLED) { 610 u16 interval = 0; 611 u8 period = 0; 612 613 if (bss_conf->enable_beacon) { 614 period = bss_conf->dtim_period; 615 interval = bss_conf->beacon_int; 616 } 617 618 spin_lock_irq(&mac->lock); 619 mac->beacon.period = period; 620 mac->beacon.interval = interval; 621 mac->beacon.last_update = jiffies; 622 spin_unlock_irq(&mac->lock); 623 624 plfxlc_set_beacon_interval(&mac->chip, interval, 625 period, mac->type); 626 } 627 exit_all: 628 spin_lock_irq(&mac->lock); 629 mac->associated = associated; 630 spin_unlock_irq(&mac->lock); 631 } 632 633 static int plfxlc_get_stats(struct ieee80211_hw *hw, 634 struct ieee80211_low_level_stats *stats) 635 { 636 stats->dot11ACKFailureCount = 0; 637 stats->dot11RTSFailureCount = 0; 638 stats->dot11FCSErrorCount = 0; 639 stats->dot11RTSSuccessCount = 0; 640 return 0; 641 } 642 643 static const char et_strings[][ETH_GSTRING_LEN] = { 644 "phy_rssi", 645 "phy_rx_crc_err" 646 }; 647 648 static int plfxlc_get_et_sset_count(struct ieee80211_hw *hw, 649 struct ieee80211_vif *vif, int sset) 650 { 651 if (sset == ETH_SS_STATS) 652 return ARRAY_SIZE(et_strings); 653 654 return 0; 655 } 656 657 static void plfxlc_get_et_strings(struct ieee80211_hw *hw, 658 struct ieee80211_vif *vif, 659 u32 sset, u8 *data) 660 { 661 if (sset == ETH_SS_STATS) 662 memcpy(data, et_strings, sizeof(et_strings)); 663 } 664 665 static void plfxlc_get_et_stats(struct ieee80211_hw *hw, 666 struct ieee80211_vif *vif, 667 struct ethtool_stats *stats, u64 *data) 668 { 669 struct plfxlc_mac *mac = plfxlc_hw_mac(hw); 670 671 data[0] = mac->rssi; 672 data[1] = mac->crc_errors; 673 } 674 675 static int plfxlc_set_rts_threshold(struct ieee80211_hw *hw, int radio_idx, 676 u32 value) 677 { 678 return 0; 679 } 680 681 static const struct ieee80211_ops plfxlc_ops = { 682 .add_chanctx = ieee80211_emulate_add_chanctx, 683 .remove_chanctx = ieee80211_emulate_remove_chanctx, 684 .change_chanctx = ieee80211_emulate_change_chanctx, 685 .switch_vif_chanctx = ieee80211_emulate_switch_vif_chanctx, 686 .tx = plfxlc_op_tx, 687 .wake_tx_queue = ieee80211_handle_wake_tx_queue, 688 .start = plfxlc_op_start, 689 .stop = plfxlc_op_stop, 690 .add_interface = plfxlc_op_add_interface, 691 .remove_interface = plfxlc_op_remove_interface, 692 .set_rts_threshold = plfxlc_set_rts_threshold, 693 .config = plfxlc_op_config, 694 .configure_filter = plfxlc_op_configure_filter, 695 .bss_info_changed = plfxlc_op_bss_info_changed, 696 .get_stats = plfxlc_get_stats, 697 .get_et_sset_count = plfxlc_get_et_sset_count, 698 .get_et_stats = plfxlc_get_et_stats, 699 .get_et_strings = plfxlc_get_et_strings, 700 }; 701 702 struct ieee80211_hw *plfxlc_mac_alloc_hw(struct usb_interface *intf) 703 { 704 struct ieee80211_hw *hw; 705 struct plfxlc_mac *mac; 706 707 hw = ieee80211_alloc_hw(sizeof(struct plfxlc_mac), &plfxlc_ops); 708 if (!hw) { 709 dev_dbg(&intf->dev, "out of memory\n"); 710 return NULL; 711 } 712 set_wiphy_dev(hw->wiphy, &intf->dev); 713 714 mac = plfxlc_hw_mac(hw); 715 memset(mac, 0, sizeof(*mac)); 716 spin_lock_init(&mac->lock); 717 mac->hw = hw; 718 719 mac->type = NL80211_IFTYPE_UNSPECIFIED; 720 721 memcpy(mac->channels, plfxlc_channels, sizeof(plfxlc_channels)); 722 memcpy(mac->rates, plfxlc_rates, sizeof(plfxlc_rates)); 723 mac->band.n_bitrates = ARRAY_SIZE(plfxlc_rates); 724 mac->band.bitrates = mac->rates; 725 mac->band.n_channels = ARRAY_SIZE(plfxlc_channels); 726 mac->band.channels = mac->channels; 727 hw->wiphy->bands[NL80211_BAND_LC] = &mac->band; 728 hw->conf.chandef.width = NL80211_CHAN_WIDTH_20; 729 730 ieee80211_hw_set(hw, RX_INCLUDES_FCS); 731 ieee80211_hw_set(hw, SIGNAL_DBM); 732 ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING); 733 ieee80211_hw_set(hw, MFP_CAPABLE); 734 735 hw->wiphy->interface_modes = 736 BIT(NL80211_IFTYPE_STATION) | 737 BIT(NL80211_IFTYPE_ADHOC); 738 hw->max_signal = 100; 739 hw->queues = 1; 740 /* 4 for 32 bit alignment if no tailroom */ 741 hw->extra_tx_headroom = sizeof(struct plfxlc_ctrlset) + 4; 742 /* Tell mac80211 that we support multi rate retries */ 743 hw->max_rates = IEEE80211_TX_MAX_RATES; 744 hw->max_rate_tries = 18; /* 9 rates * 2 retries/rate */ 745 746 skb_queue_head_init(&mac->ack_wait_queue); 747 mac->ack_pending = 0; 748 749 plfxlc_chip_init(&mac->chip, hw, intf); 750 751 SET_IEEE80211_DEV(hw, &intf->dev); 752 return hw; 753 } 754 755 void plfxlc_mac_release_hw(struct ieee80211_hw *hw) 756 { 757 plfxlc_chip_release(&plfxlc_hw_mac(hw)->chip); 758 ieee80211_free_hw(hw); 759 } 760