diff options
Diffstat (limited to 'drivers/net/wireless/mediatek/mt76/mac80211.c')
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mac80211.c | 1685 |
1 files changed, 1685 insertions, 0 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mac80211.c b/drivers/net/wireless/mediatek/mt76/mac80211.c new file mode 100644 index 000000000..6de13d641 --- /dev/null +++ b/drivers/net/wireless/mediatek/mt76/mac80211.c @@ -0,0 +1,1685 @@ +// SPDX-License-Identifier: ISC +/* + * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name> + */ +#include <linux/sched.h> +#include <linux/of.h> +#include "mt76.h" + +#define CHAN2G(_idx, _freq) { \ + .band = NL80211_BAND_2GHZ, \ + .center_freq = (_freq), \ + .hw_value = (_idx), \ + .max_power = 30, \ +} + +#define CHAN5G(_idx, _freq) { \ + .band = NL80211_BAND_5GHZ, \ + .center_freq = (_freq), \ + .hw_value = (_idx), \ + .max_power = 30, \ +} + +#define CHAN6G(_idx, _freq) { \ + .band = NL80211_BAND_6GHZ, \ + .center_freq = (_freq), \ + .hw_value = (_idx), \ + .max_power = 30, \ +} + +static const struct ieee80211_channel mt76_channels_2ghz[] = { + CHAN2G(1, 2412), + CHAN2G(2, 2417), + CHAN2G(3, 2422), + CHAN2G(4, 2427), + CHAN2G(5, 2432), + CHAN2G(6, 2437), + CHAN2G(7, 2442), + CHAN2G(8, 2447), + CHAN2G(9, 2452), + CHAN2G(10, 2457), + CHAN2G(11, 2462), + CHAN2G(12, 2467), + CHAN2G(13, 2472), + CHAN2G(14, 2484), +}; + +static const struct ieee80211_channel mt76_channels_5ghz[] = { + CHAN5G(36, 5180), + CHAN5G(40, 5200), + CHAN5G(44, 5220), + CHAN5G(48, 5240), + + CHAN5G(52, 5260), + CHAN5G(56, 5280), + CHAN5G(60, 5300), + CHAN5G(64, 5320), + + CHAN5G(100, 5500), + CHAN5G(104, 5520), + CHAN5G(108, 5540), + CHAN5G(112, 5560), + CHAN5G(116, 5580), + CHAN5G(120, 5600), + CHAN5G(124, 5620), + CHAN5G(128, 5640), + CHAN5G(132, 5660), + CHAN5G(136, 5680), + CHAN5G(140, 5700), + CHAN5G(144, 5720), + + CHAN5G(149, 5745), + CHAN5G(153, 5765), + CHAN5G(157, 5785), + CHAN5G(161, 5805), + CHAN5G(165, 5825), + CHAN5G(169, 5845), + CHAN5G(173, 5865), +}; + +static const struct ieee80211_channel mt76_channels_6ghz[] = { + /* UNII-5 */ + CHAN6G(1, 5955), + CHAN6G(5, 5975), + CHAN6G(9, 5995), + CHAN6G(13, 6015), + CHAN6G(17, 6035), + CHAN6G(21, 6055), + CHAN6G(25, 6075), + CHAN6G(29, 6095), + CHAN6G(33, 6115), + CHAN6G(37, 6135), + CHAN6G(41, 6155), + CHAN6G(45, 6175), + CHAN6G(49, 6195), + CHAN6G(53, 6215), + CHAN6G(57, 6235), + CHAN6G(61, 6255), + CHAN6G(65, 6275), + CHAN6G(69, 6295), + CHAN6G(73, 6315), + CHAN6G(77, 6335), + CHAN6G(81, 6355), + CHAN6G(85, 6375), + CHAN6G(89, 6395), + CHAN6G(93, 6415), + /* UNII-6 */ + CHAN6G(97, 6435), + CHAN6G(101, 6455), + CHAN6G(105, 6475), + CHAN6G(109, 6495), + CHAN6G(113, 6515), + CHAN6G(117, 6535), + /* UNII-7 */ + CHAN6G(121, 6555), + CHAN6G(125, 6575), + CHAN6G(129, 6595), + CHAN6G(133, 6615), + CHAN6G(137, 6635), + CHAN6G(141, 6655), + CHAN6G(145, 6675), + CHAN6G(149, 6695), + CHAN6G(153, 6715), + CHAN6G(157, 6735), + CHAN6G(161, 6755), + CHAN6G(165, 6775), + CHAN6G(169, 6795), + CHAN6G(173, 6815), + CHAN6G(177, 6835), + CHAN6G(181, 6855), + CHAN6G(185, 6875), + /* UNII-8 */ + CHAN6G(189, 6895), + CHAN6G(193, 6915), + CHAN6G(197, 6935), + CHAN6G(201, 6955), + CHAN6G(205, 6975), + CHAN6G(209, 6995), + CHAN6G(213, 7015), + CHAN6G(217, 7035), + CHAN6G(221, 7055), + CHAN6G(225, 7075), + CHAN6G(229, 7095), + CHAN6G(233, 7115), +}; + +static const struct ieee80211_tpt_blink mt76_tpt_blink[] = { + { .throughput = 0 * 1024, .blink_time = 334 }, + { .throughput = 1 * 1024, .blink_time = 260 }, + { .throughput = 5 * 1024, .blink_time = 220 }, + { .throughput = 10 * 1024, .blink_time = 190 }, + { .throughput = 20 * 1024, .blink_time = 170 }, + { .throughput = 50 * 1024, .blink_time = 150 }, + { .throughput = 70 * 1024, .blink_time = 130 }, + { .throughput = 100 * 1024, .blink_time = 110 }, + { .throughput = 200 * 1024, .blink_time = 80 }, + { .throughput = 300 * 1024, .blink_time = 50 }, +}; + +struct ieee80211_rate mt76_rates[] = { + CCK_RATE(0, 10), + CCK_RATE(1, 20), + CCK_RATE(2, 55), + CCK_RATE(3, 110), + OFDM_RATE(11, 60), + OFDM_RATE(15, 90), + OFDM_RATE(10, 120), + OFDM_RATE(14, 180), + OFDM_RATE(9, 240), + OFDM_RATE(13, 360), + OFDM_RATE(8, 480), + OFDM_RATE(12, 540), +}; +EXPORT_SYMBOL_GPL(mt76_rates); + +static const struct cfg80211_sar_freq_ranges mt76_sar_freq_ranges[] = { + { .start_freq = 2402, .end_freq = 2494, }, + { .start_freq = 5150, .end_freq = 5350, }, + { .start_freq = 5350, .end_freq = 5470, }, + { .start_freq = 5470, .end_freq = 5725, }, + { .start_freq = 5725, .end_freq = 5950, }, + { .start_freq = 5945, .end_freq = 6165, }, + { .start_freq = 6165, .end_freq = 6405, }, + { .start_freq = 6405, .end_freq = 6525, }, + { .start_freq = 6525, .end_freq = 6705, }, + { .start_freq = 6705, .end_freq = 6865, }, + { .start_freq = 6865, .end_freq = 7125, }, +}; + +static const struct cfg80211_sar_capa mt76_sar_capa = { + .type = NL80211_SAR_TYPE_POWER, + .num_freq_ranges = ARRAY_SIZE(mt76_sar_freq_ranges), + .freq_ranges = &mt76_sar_freq_ranges[0], +}; + +static int mt76_led_init(struct mt76_dev *dev) +{ + struct device_node *np = dev->dev->of_node; + struct ieee80211_hw *hw = dev->hw; + int led_pin; + + if (!dev->led_cdev.brightness_set && !dev->led_cdev.blink_set) + return 0; + + snprintf(dev->led_name, sizeof(dev->led_name), + "mt76-%s", wiphy_name(hw->wiphy)); + + dev->led_cdev.name = dev->led_name; + dev->led_cdev.default_trigger = + ieee80211_create_tpt_led_trigger(hw, + IEEE80211_TPT_LEDTRIG_FL_RADIO, + mt76_tpt_blink, + ARRAY_SIZE(mt76_tpt_blink)); + + np = of_get_child_by_name(np, "led"); + if (np) { + if (!of_property_read_u32(np, "led-sources", &led_pin)) + dev->led_pin = led_pin; + dev->led_al = of_property_read_bool(np, "led-active-low"); + of_node_put(np); + } + + return led_classdev_register(dev->dev, &dev->led_cdev); +} + +static void mt76_led_cleanup(struct mt76_dev *dev) +{ + if (!dev->led_cdev.brightness_set && !dev->led_cdev.blink_set) + return; + + led_classdev_unregister(&dev->led_cdev); +} + +static void mt76_init_stream_cap(struct mt76_phy *phy, + struct ieee80211_supported_band *sband, + bool vht) +{ + struct ieee80211_sta_ht_cap *ht_cap = &sband->ht_cap; + int i, nstream = hweight8(phy->antenna_mask); + struct ieee80211_sta_vht_cap *vht_cap; + u16 mcs_map = 0; + + if (nstream > 1) + ht_cap->cap |= IEEE80211_HT_CAP_TX_STBC; + else + ht_cap->cap &= ~IEEE80211_HT_CAP_TX_STBC; + + for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) + ht_cap->mcs.rx_mask[i] = i < nstream ? 0xff : 0; + + if (!vht) + return; + + vht_cap = &sband->vht_cap; + if (nstream > 1) + vht_cap->cap |= IEEE80211_VHT_CAP_TXSTBC; + else + vht_cap->cap &= ~IEEE80211_VHT_CAP_TXSTBC; + vht_cap->cap |= IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN | + IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN; + + for (i = 0; i < 8; i++) { + if (i < nstream) + mcs_map |= (IEEE80211_VHT_MCS_SUPPORT_0_9 << (i * 2)); + else + mcs_map |= + (IEEE80211_VHT_MCS_NOT_SUPPORTED << (i * 2)); + } + vht_cap->vht_mcs.rx_mcs_map = cpu_to_le16(mcs_map); + vht_cap->vht_mcs.tx_mcs_map = cpu_to_le16(mcs_map); + if (ieee80211_hw_check(phy->hw, SUPPORTS_VHT_EXT_NSS_BW)) + vht_cap->vht_mcs.tx_highest |= + cpu_to_le16(IEEE80211_VHT_EXT_NSS_BW_CAPABLE); +} + +void mt76_set_stream_caps(struct mt76_phy *phy, bool vht) +{ + if (phy->cap.has_2ghz) + mt76_init_stream_cap(phy, &phy->sband_2g.sband, false); + if (phy->cap.has_5ghz) + mt76_init_stream_cap(phy, &phy->sband_5g.sband, vht); + if (phy->cap.has_6ghz) + mt76_init_stream_cap(phy, &phy->sband_6g.sband, vht); +} +EXPORT_SYMBOL_GPL(mt76_set_stream_caps); + +static int +mt76_init_sband(struct mt76_phy *phy, struct mt76_sband *msband, + const struct ieee80211_channel *chan, int n_chan, + struct ieee80211_rate *rates, int n_rates, + bool ht, bool vht) +{ + struct ieee80211_supported_band *sband = &msband->sband; + struct ieee80211_sta_vht_cap *vht_cap; + struct ieee80211_sta_ht_cap *ht_cap; + struct mt76_dev *dev = phy->dev; + void *chanlist; + int size; + + size = n_chan * sizeof(*chan); + chanlist = devm_kmemdup(dev->dev, chan, size, GFP_KERNEL); + if (!chanlist) + return -ENOMEM; + + msband->chan = devm_kcalloc(dev->dev, n_chan, sizeof(*msband->chan), + GFP_KERNEL); + if (!msband->chan) + return -ENOMEM; + + sband->channels = chanlist; + sband->n_channels = n_chan; + sband->bitrates = rates; + sband->n_bitrates = n_rates; + + if (!ht) + return 0; + + ht_cap = &sband->ht_cap; + ht_cap->ht_supported = true; + ht_cap->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40 | + IEEE80211_HT_CAP_GRN_FLD | + IEEE80211_HT_CAP_SGI_20 | + IEEE80211_HT_CAP_SGI_40 | + (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT); + + ht_cap->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED; + ht_cap->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K; + + mt76_init_stream_cap(phy, sband, vht); + + if (!vht) + return 0; + + vht_cap = &sband->vht_cap; + vht_cap->vht_supported = true; + vht_cap->cap |= IEEE80211_VHT_CAP_RXLDPC | + IEEE80211_VHT_CAP_RXSTBC_1 | + IEEE80211_VHT_CAP_SHORT_GI_80 | + (3 << IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT); + + return 0; +} + +static int +mt76_init_sband_2g(struct mt76_phy *phy, struct ieee80211_rate *rates, + int n_rates) +{ + phy->hw->wiphy->bands[NL80211_BAND_2GHZ] = &phy->sband_2g.sband; + + return mt76_init_sband(phy, &phy->sband_2g, mt76_channels_2ghz, + ARRAY_SIZE(mt76_channels_2ghz), rates, + n_rates, true, false); +} + +static int +mt76_init_sband_5g(struct mt76_phy *phy, struct ieee80211_rate *rates, + int n_rates, bool vht) +{ + phy->hw->wiphy->bands[NL80211_BAND_5GHZ] = &phy->sband_5g.sband; + + return mt76_init_sband(phy, &phy->sband_5g, mt76_channels_5ghz, + ARRAY_SIZE(mt76_channels_5ghz), rates, + n_rates, true, vht); +} + +static int +mt76_init_sband_6g(struct mt76_phy *phy, struct ieee80211_rate *rates, + int n_rates) +{ + phy->hw->wiphy->bands[NL80211_BAND_6GHZ] = &phy->sband_6g.sband; + + return mt76_init_sband(phy, &phy->sband_6g, mt76_channels_6ghz, + ARRAY_SIZE(mt76_channels_6ghz), rates, + n_rates, false, false); +} + +static void +mt76_check_sband(struct mt76_phy *phy, struct mt76_sband *msband, + enum nl80211_band band) +{ + struct ieee80211_supported_band *sband = &msband->sband; + bool found = false; + int i; + + if (!sband) + return; + + for (i = 0; i < sband->n_channels; i++) { + if (sband->channels[i].flags & IEEE80211_CHAN_DISABLED) + continue; + + found = true; + break; + } + + if (found) { + phy->chandef.chan = &sband->channels[0]; + phy->chan_state = &msband->chan[0]; + return; + } + + sband->n_channels = 0; + phy->hw->wiphy->bands[band] = NULL; +} + +static int +mt76_phy_init(struct mt76_phy *phy, struct ieee80211_hw *hw) +{ + struct mt76_dev *dev = phy->dev; + struct wiphy *wiphy = hw->wiphy; + + SET_IEEE80211_DEV(hw, dev->dev); + SET_IEEE80211_PERM_ADDR(hw, phy->macaddr); + + wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR; + wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH | + WIPHY_FLAG_SUPPORTS_TDLS | + WIPHY_FLAG_AP_UAPSD; + + wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST); + wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_AIRTIME_FAIRNESS); + wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_AQL); + + wiphy->available_antennas_tx = phy->antenna_mask; + wiphy->available_antennas_rx = phy->antenna_mask; + + wiphy->sar_capa = &mt76_sar_capa; + phy->frp = devm_kcalloc(dev->dev, wiphy->sar_capa->num_freq_ranges, + sizeof(struct mt76_freq_range_power), + GFP_KERNEL); + if (!phy->frp) + return -ENOMEM; + + hw->txq_data_size = sizeof(struct mt76_txq); + hw->uapsd_max_sp_len = IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL; + + if (!hw->max_tx_fragments) + hw->max_tx_fragments = 16; + + ieee80211_hw_set(hw, SIGNAL_DBM); + ieee80211_hw_set(hw, AMPDU_AGGREGATION); + ieee80211_hw_set(hw, SUPPORTS_RC_TABLE); + ieee80211_hw_set(hw, SUPPORT_FAST_XMIT); + ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS); + ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU); + ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER); + ieee80211_hw_set(hw, TX_AMSDU); + ieee80211_hw_set(hw, TX_FRAG_LIST); + ieee80211_hw_set(hw, MFP_CAPABLE); + ieee80211_hw_set(hw, AP_LINK_PS); + ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS); + + return 0; +} + +struct mt76_phy * +mt76_alloc_phy(struct mt76_dev *dev, unsigned int size, + const struct ieee80211_ops *ops, u8 band_idx) +{ + struct ieee80211_hw *hw; + unsigned int phy_size; + struct mt76_phy *phy; + + phy_size = ALIGN(sizeof(*phy), 8); + hw = ieee80211_alloc_hw(size + phy_size, ops); + if (!hw) + return NULL; + + phy = hw->priv; + phy->dev = dev; + phy->hw = hw; + phy->priv = hw->priv + phy_size; + phy->band_idx = band_idx; + + hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN; + hw->wiphy->interface_modes = + BIT(NL80211_IFTYPE_STATION) | + BIT(NL80211_IFTYPE_AP) | +#ifdef CONFIG_MAC80211_MESH + BIT(NL80211_IFTYPE_MESH_POINT) | +#endif + BIT(NL80211_IFTYPE_P2P_CLIENT) | + BIT(NL80211_IFTYPE_P2P_GO) | + BIT(NL80211_IFTYPE_ADHOC); + + return phy; +} +EXPORT_SYMBOL_GPL(mt76_alloc_phy); + +int mt76_register_phy(struct mt76_phy *phy, bool vht, + struct ieee80211_rate *rates, int n_rates) +{ + int ret; + + ret = mt76_phy_init(phy, phy->hw); + if (ret) + return ret; + + if (phy->cap.has_2ghz) { + ret = mt76_init_sband_2g(phy, rates, n_rates); + if (ret) + return ret; + } + + if (phy->cap.has_5ghz) { + ret = mt76_init_sband_5g(phy, rates + 4, n_rates - 4, vht); + if (ret) + return ret; + } + + if (phy->cap.has_6ghz) { + ret = mt76_init_sband_6g(phy, rates + 4, n_rates - 4); + if (ret) + return ret; + } + + wiphy_read_of_freq_limits(phy->hw->wiphy); + mt76_check_sband(phy, &phy->sband_2g, NL80211_BAND_2GHZ); + mt76_check_sband(phy, &phy->sband_5g, NL80211_BAND_5GHZ); + mt76_check_sband(phy, &phy->sband_6g, NL80211_BAND_6GHZ); + + ret = ieee80211_register_hw(phy->hw); + if (ret) + return ret; + + phy->dev->phys[phy->band_idx] = phy; + + return 0; +} +EXPORT_SYMBOL_GPL(mt76_register_phy); + +void mt76_unregister_phy(struct mt76_phy *phy) +{ + struct mt76_dev *dev = phy->dev; + + mt76_tx_status_check(dev, true); + ieee80211_unregister_hw(phy->hw); + dev->phys[phy->band_idx] = NULL; +} +EXPORT_SYMBOL_GPL(mt76_unregister_phy); + +struct mt76_dev * +mt76_alloc_device(struct device *pdev, unsigned int size, + const struct ieee80211_ops *ops, + const struct mt76_driver_ops *drv_ops) +{ + struct ieee80211_hw *hw; + struct mt76_phy *phy; + struct mt76_dev *dev; + int i; + + hw = ieee80211_alloc_hw(size, ops); + if (!hw) + return NULL; + + dev = hw->priv; + dev->hw = hw; + dev->dev = pdev; + dev->drv = drv_ops; + dev->dma_dev = pdev; + + phy = &dev->phy; + phy->dev = dev; + phy->hw = hw; + phy->band_idx = MT_BAND0; + dev->phys[phy->band_idx] = phy; + + spin_lock_init(&dev->rx_lock); + spin_lock_init(&dev->lock); + spin_lock_init(&dev->cc_lock); + spin_lock_init(&dev->status_lock); + mutex_init(&dev->mutex); + init_waitqueue_head(&dev->tx_wait); + + skb_queue_head_init(&dev->mcu.res_q); + init_waitqueue_head(&dev->mcu.wait); + mutex_init(&dev->mcu.mutex); + dev->tx_worker.fn = mt76_tx_worker; + + hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN; + hw->wiphy->interface_modes = + BIT(NL80211_IFTYPE_STATION) | + BIT(NL80211_IFTYPE_AP) | +#ifdef CONFIG_MAC80211_MESH + BIT(NL80211_IFTYPE_MESH_POINT) | +#endif + BIT(NL80211_IFTYPE_P2P_CLIENT) | + BIT(NL80211_IFTYPE_P2P_GO) | + BIT(NL80211_IFTYPE_ADHOC); + + spin_lock_init(&dev->token_lock); + idr_init(&dev->token); + + INIT_LIST_HEAD(&dev->wcid_list); + + INIT_LIST_HEAD(&dev->txwi_cache); + dev->token_size = dev->drv->token_size; + + for (i = 0; i < ARRAY_SIZE(dev->q_rx); i++) + skb_queue_head_init(&dev->rx_skb[i]); + + dev->wq = alloc_ordered_workqueue("mt76", 0); + if (!dev->wq) { + ieee80211_free_hw(hw); + return NULL; + } + + return dev; +} +EXPORT_SYMBOL_GPL(mt76_alloc_device); + +int mt76_register_device(struct mt76_dev *dev, bool vht, + struct ieee80211_rate *rates, int n_rates) +{ + struct ieee80211_hw *hw = dev->hw; + struct mt76_phy *phy = &dev->phy; + int ret; + + dev_set_drvdata(dev->dev, dev); + ret = mt76_phy_init(phy, hw); + if (ret) + return ret; + + if (phy->cap.has_2ghz) { + ret = mt76_init_sband_2g(phy, rates, n_rates); + if (ret) + return ret; + } + + if (phy->cap.has_5ghz) { + ret = mt76_init_sband_5g(phy, rates + 4, n_rates - 4, vht); + if (ret) + return ret; + } + + if (phy->cap.has_6ghz) { + ret = mt76_init_sband_6g(phy, rates + 4, n_rates - 4); + if (ret) + return ret; + } + + wiphy_read_of_freq_limits(hw->wiphy); + mt76_check_sband(&dev->phy, &phy->sband_2g, NL80211_BAND_2GHZ); + mt76_check_sband(&dev->phy, &phy->sband_5g, NL80211_BAND_5GHZ); + mt76_check_sband(&dev->phy, &phy->sband_6g, NL80211_BAND_6GHZ); + + if (IS_ENABLED(CONFIG_MT76_LEDS)) { + ret = mt76_led_init(dev); + if (ret) + return ret; + } + + ret = ieee80211_register_hw(hw); + if (ret) + return ret; + + WARN_ON(mt76_worker_setup(hw, &dev->tx_worker, NULL, "tx")); + sched_set_fifo_low(dev->tx_worker.task); + + return 0; +} +EXPORT_SYMBOL_GPL(mt76_register_device); + +void mt76_unregister_device(struct mt76_dev *dev) +{ + struct ieee80211_hw *hw = dev->hw; + + if (IS_ENABLED(CONFIG_MT76_LEDS)) + mt76_led_cleanup(dev); + mt76_tx_status_check(dev, true); + ieee80211_unregister_hw(hw); +} +EXPORT_SYMBOL_GPL(mt76_unregister_device); + +void mt76_free_device(struct mt76_dev *dev) +{ + mt76_worker_teardown(&dev->tx_worker); + if (dev->wq) { + destroy_workqueue(dev->wq); + dev->wq = NULL; + } + ieee80211_free_hw(dev->hw); +} +EXPORT_SYMBOL_GPL(mt76_free_device); + +static void mt76_rx_release_amsdu(struct mt76_phy *phy, enum mt76_rxq_id q) +{ + struct sk_buff *skb = phy->rx_amsdu[q].head; + struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb; + struct mt76_dev *dev = phy->dev; + + phy->rx_amsdu[q].head = NULL; + phy->rx_amsdu[q].tail = NULL; + + /* + * Validate if the amsdu has a proper first subframe. + * A single MSDU can be parsed as A-MSDU when the unauthenticated A-MSDU + * flag of the QoS header gets flipped. In such cases, the first + * subframe has a LLC/SNAP header in the location of the destination + * address. + */ + if (skb_shinfo(skb)->frag_list) { + int offset = 0; + + if (!(status->flag & RX_FLAG_8023)) { + offset = ieee80211_get_hdrlen_from_skb(skb); + + if ((status->flag & + (RX_FLAG_DECRYPTED | RX_FLAG_IV_STRIPPED)) == + RX_FLAG_DECRYPTED) + offset += 8; + } + + if (ether_addr_equal(skb->data + offset, rfc1042_header)) { + dev_kfree_skb(skb); + return; + } + } + __skb_queue_tail(&dev->rx_skb[q], skb); +} + +static void mt76_rx_release_burst(struct mt76_phy *phy, enum mt76_rxq_id q, + struct sk_buff *skb) +{ + struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb; + + if (phy->rx_amsdu[q].head && + (!status->amsdu || status->first_amsdu || + status->seqno != phy->rx_amsdu[q].seqno)) + mt76_rx_release_amsdu(phy, q); + + if (!phy->rx_amsdu[q].head) { + phy->rx_amsdu[q].tail = &skb_shinfo(skb)->frag_list; + phy->rx_amsdu[q].seqno = status->seqno; + phy->rx_amsdu[q].head = skb; + } else { + *phy->rx_amsdu[q].tail = skb; + phy->rx_amsdu[q].tail = &skb->next; + } + + if (!status->amsdu || status->last_amsdu) + mt76_rx_release_amsdu(phy, q); +} + +void mt76_rx(struct mt76_dev *dev, enum mt76_rxq_id q, struct sk_buff *skb) +{ + struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb; + struct mt76_phy *phy = mt76_dev_phy(dev, status->phy_idx); + + if (!test_bit(MT76_STATE_RUNNING, &phy->state)) { + dev_kfree_skb(skb); + return; + } + +#ifdef CONFIG_NL80211_TESTMODE + if (phy->test.state == MT76_TM_STATE_RX_FRAMES) { + phy->test.rx_stats.packets[q]++; + if (status->flag & RX_FLAG_FAILED_FCS_CRC) + phy->test.rx_stats.fcs_error[q]++; + } +#endif + + mt76_rx_release_burst(phy, q, skb); +} +EXPORT_SYMBOL_GPL(mt76_rx); + +bool mt76_has_tx_pending(struct mt76_phy *phy) +{ + struct mt76_queue *q; + int i; + + for (i = 0; i < __MT_TXQ_MAX; i++) { + q = phy->q_tx[i]; + if (q && q->queued) + return true; + } + + return false; +} +EXPORT_SYMBOL_GPL(mt76_has_tx_pending); + +static struct mt76_channel_state * +mt76_channel_state(struct mt76_phy *phy, struct ieee80211_channel *c) +{ + struct mt76_sband *msband; + int idx; + + if (c->band == NL80211_BAND_2GHZ) + msband = &phy->sband_2g; + else if (c->band == NL80211_BAND_6GHZ) + msband = &phy->sband_6g; + else + msband = &phy->sband_5g; + + idx = c - &msband->sband.channels[0]; + return &msband->chan[idx]; +} + +void mt76_update_survey_active_time(struct mt76_phy *phy, ktime_t time) +{ + struct mt76_channel_state *state = phy->chan_state; + + state->cc_active += ktime_to_us(ktime_sub(time, + phy->survey_time)); + phy->survey_time = time; +} +EXPORT_SYMBOL_GPL(mt76_update_survey_active_time); + +void mt76_update_survey(struct mt76_phy *phy) +{ + struct mt76_dev *dev = phy->dev; + ktime_t cur_time; + + if (dev->drv->update_survey) + dev->drv->update_survey(phy); + + cur_time = ktime_get_boottime(); + mt76_update_survey_active_time(phy, cur_time); + + if (dev->drv->drv_flags & MT_DRV_SW_RX_AIRTIME) { + struct mt76_channel_state *state = phy->chan_state; + + spin_lock_bh(&dev->cc_lock); + state->cc_bss_rx += dev->cur_cc_bss_rx; + dev->cur_cc_bss_rx = 0; + spin_unlock_bh(&dev->cc_lock); + } +} +EXPORT_SYMBOL_GPL(mt76_update_survey); + +void mt76_set_channel(struct mt76_phy *phy) +{ + struct mt76_dev *dev = phy->dev; + struct ieee80211_hw *hw = phy->hw; + struct cfg80211_chan_def *chandef = &hw->conf.chandef; + bool offchannel = hw->conf.flags & IEEE80211_CONF_OFFCHANNEL; + int timeout = HZ / 5; + + wait_event_timeout(dev->tx_wait, !mt76_has_tx_pending(phy), timeout); + mt76_update_survey(phy); + + if (phy->chandef.chan->center_freq != chandef->chan->center_freq || + phy->chandef.width != chandef->width) + phy->dfs_state = MT_DFS_STATE_UNKNOWN; + + phy->chandef = *chandef; + phy->chan_state = mt76_channel_state(phy, chandef->chan); + + if (!offchannel) + phy->main_chan = chandef->chan; + + if (chandef->chan != phy->main_chan) + memset(phy->chan_state, 0, sizeof(*phy->chan_state)); +} +EXPORT_SYMBOL_GPL(mt76_set_channel); + +int mt76_get_survey(struct ieee80211_hw *hw, int idx, + struct survey_info *survey) +{ + struct mt76_phy *phy = hw->priv; + struct mt76_dev *dev = phy->dev; + struct mt76_sband *sband; + struct ieee80211_channel *chan; + struct mt76_channel_state *state; + int ret = 0; + + mutex_lock(&dev->mutex); + if (idx == 0 && dev->drv->update_survey) + mt76_update_survey(phy); + + if (idx >= phy->sband_2g.sband.n_channels + + phy->sband_5g.sband.n_channels) { + idx -= (phy->sband_2g.sband.n_channels + + phy->sband_5g.sband.n_channels); + sband = &phy->sband_6g; + } else if (idx >= phy->sband_2g.sband.n_channels) { + idx -= phy->sband_2g.sband.n_channels; + sband = &phy->sband_5g; + } else { + sband = &phy->sband_2g; + } + + if (idx >= sband->sband.n_channels) { + ret = -ENOENT; + goto out; + } + + chan = &sband->sband.channels[idx]; + state = mt76_channel_state(phy, chan); + + memset(survey, 0, sizeof(*survey)); + survey->channel = chan; + survey->filled = SURVEY_INFO_TIME | SURVEY_INFO_TIME_BUSY; + survey->filled |= dev->drv->survey_flags; + if (state->noise) + survey->filled |= SURVEY_INFO_NOISE_DBM; + + if (chan == phy->main_chan) { + survey->filled |= SURVEY_INFO_IN_USE; + + if (dev->drv->drv_flags & MT_DRV_SW_RX_AIRTIME) + survey->filled |= SURVEY_INFO_TIME_BSS_RX; + } + + survey->time_busy = div_u64(state->cc_busy, 1000); + survey->time_rx = div_u64(state->cc_rx, 1000); + survey->time = div_u64(state->cc_active, 1000); + survey->noise = state->noise; + + spin_lock_bh(&dev->cc_lock); + survey->time_bss_rx = div_u64(state->cc_bss_rx, 1000); + survey->time_tx = div_u64(state->cc_tx, 1000); + spin_unlock_bh(&dev->cc_lock); + +out: + mutex_unlock(&dev->mutex); + + return ret; +} +EXPORT_SYMBOL_GPL(mt76_get_survey); + +void mt76_wcid_key_setup(struct mt76_dev *dev, struct mt76_wcid *wcid, + struct ieee80211_key_conf *key) +{ + struct ieee80211_key_seq seq; + int i; + + wcid->rx_check_pn = false; + + if (!key) + return; + + if (key->cipher != WLAN_CIPHER_SUITE_CCMP) + return; + + wcid->rx_check_pn = true; + + /* data frame */ + for (i = 0; i < IEEE80211_NUM_TIDS; i++) { + ieee80211_get_key_rx_seq(key, i, &seq); + memcpy(wcid->rx_key_pn[i], seq.ccmp.pn, sizeof(seq.ccmp.pn)); + } + + /* robust management frame */ + ieee80211_get_key_rx_seq(key, -1, &seq); + memcpy(wcid->rx_key_pn[i], seq.ccmp.pn, sizeof(seq.ccmp.pn)); + +} +EXPORT_SYMBOL(mt76_wcid_key_setup); + +static int +mt76_rx_signal(struct mt76_rx_status *status) +{ + s8 *chain_signal = status->chain_signal; + int signal = -128; + u8 chains; + + for (chains = status->chains; chains; chains >>= 1, chain_signal++) { + int cur, diff; + + cur = *chain_signal; + if (!(chains & BIT(0)) || + cur > 0) + continue; + + if (cur > signal) + swap(cur, signal); + + diff = signal - cur; + if (diff == 0) + signal += 3; + else if (diff <= 2) + signal += 2; + else if (diff <= 6) + signal += 1; + } + + return signal; +} + +static void +mt76_rx_convert(struct mt76_dev *dev, struct sk_buff *skb, + struct ieee80211_hw **hw, + struct ieee80211_sta **sta) +{ + struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb); + struct ieee80211_hdr *hdr = mt76_skb_get_hdr(skb); + struct mt76_rx_status mstat; + + mstat = *((struct mt76_rx_status *)skb->cb); + memset(status, 0, sizeof(*status)); + + status->flag = mstat.flag; + status->freq = mstat.freq; + status->enc_flags = mstat.enc_flags; + status->encoding = mstat.encoding; + status->bw = mstat.bw; + status->he_ru = mstat.he_ru; + status->he_gi = mstat.he_gi; + status->he_dcm = mstat.he_dcm; + status->rate_idx = mstat.rate_idx; + status->nss = mstat.nss; + status->band = mstat.band; + status->signal = mstat.signal; + status->chains = mstat.chains; + status->ampdu_reference = mstat.ampdu_ref; + status->device_timestamp = mstat.timestamp; + status->mactime = mstat.timestamp; + status->signal = mt76_rx_signal(&mstat); + if (status->signal <= -128) + status->flag |= RX_FLAG_NO_SIGNAL_VAL; + + if (ieee80211_is_beacon(hdr->frame_control) || + ieee80211_is_probe_resp(hdr->frame_control)) + status->boottime_ns = ktime_get_boottime_ns(); + + BUILD_BUG_ON(sizeof(mstat) > sizeof(skb->cb)); + BUILD_BUG_ON(sizeof(status->chain_signal) != + sizeof(mstat.chain_signal)); + memcpy(status->chain_signal, mstat.chain_signal, + sizeof(mstat.chain_signal)); + + *sta = wcid_to_sta(mstat.wcid); + *hw = mt76_phy_hw(dev, mstat.phy_idx); +} + +static void +mt76_check_ccmp_pn(struct sk_buff *skb) +{ + struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb; + struct mt76_wcid *wcid = status->wcid; + struct ieee80211_hdr *hdr; + int security_idx; + int ret; + + if (!(status->flag & RX_FLAG_DECRYPTED)) + return; + + if (status->flag & RX_FLAG_ONLY_MONITOR) + return; + + if (!wcid || !wcid->rx_check_pn) + return; + + security_idx = status->qos_ctl & IEEE80211_QOS_CTL_TID_MASK; + if (status->flag & RX_FLAG_8023) + goto skip_hdr_check; + + hdr = mt76_skb_get_hdr(skb); + if (!(status->flag & RX_FLAG_IV_STRIPPED)) { + /* + * Validate the first fragment both here and in mac80211 + * All further fragments will be validated by mac80211 only. + */ + if (ieee80211_is_frag(hdr) && + !ieee80211_is_first_frag(hdr->frame_control)) + return; + } + + /* IEEE 802.11-2020, 12.5.3.4.4 "PN and replay detection" c): + * + * the recipient shall maintain a single replay counter for received + * individually addressed robust Management frames that are received + * with the To DS subfield equal to 0, [...] + */ + if (ieee80211_is_mgmt(hdr->frame_control) && + !ieee80211_has_tods(hdr->frame_control)) + security_idx = IEEE80211_NUM_TIDS; + +skip_hdr_check: + BUILD_BUG_ON(sizeof(status->iv) != sizeof(wcid->rx_key_pn[0])); + ret = memcmp(status->iv, wcid->rx_key_pn[security_idx], + sizeof(status->iv)); + if (ret <= 0) { + status->flag |= RX_FLAG_ONLY_MONITOR; + return; + } + + memcpy(wcid->rx_key_pn[security_idx], status->iv, sizeof(status->iv)); + + if (status->flag & RX_FLAG_IV_STRIPPED) + status->flag |= RX_FLAG_PN_VALIDATED; +} + +static void +mt76_airtime_report(struct mt76_dev *dev, struct mt76_rx_status *status, + int len) +{ + struct mt76_wcid *wcid = status->wcid; + struct ieee80211_rx_status info = { + .enc_flags = status->enc_flags, + .rate_idx = status->rate_idx, + .encoding = status->encoding, + .band = status->band, + .nss = status->nss, + .bw = status->bw, + }; + struct ieee80211_sta *sta; + u32 airtime; + u8 tidno = status->qos_ctl & IEEE80211_QOS_CTL_TID_MASK; + + airtime = ieee80211_calc_rx_airtime(dev->hw, &info, len); + spin_lock(&dev->cc_lock); + dev->cur_cc_bss_rx += airtime; + spin_unlock(&dev->cc_lock); + + if (!wcid || !wcid->sta) + return; + + sta = container_of((void *)wcid, struct ieee80211_sta, drv_priv); + ieee80211_sta_register_airtime(sta, tidno, 0, airtime); +} + +static void +mt76_airtime_flush_ampdu(struct mt76_dev *dev) +{ + struct mt76_wcid *wcid; + int wcid_idx; + + if (!dev->rx_ampdu_len) + return; + + wcid_idx = dev->rx_ampdu_status.wcid_idx; + if (wcid_idx < ARRAY_SIZE(dev->wcid)) + wcid = rcu_dereference(dev->wcid[wcid_idx]); + else + wcid = NULL; + dev->rx_ampdu_status.wcid = wcid; + + mt76_airtime_report(dev, &dev->rx_ampdu_status, dev->rx_ampdu_len); + + dev->rx_ampdu_len = 0; + dev->rx_ampdu_ref = 0; +} + +static void +mt76_airtime_check(struct mt76_dev *dev, struct sk_buff *skb) +{ + struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb; + struct mt76_wcid *wcid = status->wcid; + + if (!(dev->drv->drv_flags & MT_DRV_SW_RX_AIRTIME)) + return; + + if (!wcid || !wcid->sta) { + struct ieee80211_hdr *hdr = mt76_skb_get_hdr(skb); + + if (status->flag & RX_FLAG_8023) + return; + + if (!ether_addr_equal(hdr->addr1, dev->phy.macaddr)) + return; + + wcid = NULL; + } + + if (!(status->flag & RX_FLAG_AMPDU_DETAILS) || + status->ampdu_ref != dev->rx_ampdu_ref) + mt76_airtime_flush_ampdu(dev); + + if (status->flag & RX_FLAG_AMPDU_DETAILS) { + if (!dev->rx_ampdu_len || + status->ampdu_ref != dev->rx_ampdu_ref) { + dev->rx_ampdu_status = *status; + dev->rx_ampdu_status.wcid_idx = wcid ? wcid->idx : 0xff; + dev->rx_ampdu_ref = status->ampdu_ref; + } + + dev->rx_ampdu_len += skb->len; + return; + } + + mt76_airtime_report(dev, status, skb->len); +} + +static void +mt76_check_sta(struct mt76_dev *dev, struct sk_buff *skb) +{ + struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb; + struct ieee80211_hdr *hdr = mt76_skb_get_hdr(skb); + struct ieee80211_sta *sta; + struct ieee80211_hw *hw; + struct mt76_wcid *wcid = status->wcid; + u8 tidno = status->qos_ctl & IEEE80211_QOS_CTL_TID_MASK; + bool ps; + + hw = mt76_phy_hw(dev, status->phy_idx); + if (ieee80211_is_pspoll(hdr->frame_control) && !wcid && + !(status->flag & RX_FLAG_8023)) { + sta = ieee80211_find_sta_by_ifaddr(hw, hdr->addr2, NULL); + if (sta) + wcid = status->wcid = (struct mt76_wcid *)sta->drv_priv; + } + + mt76_airtime_check(dev, skb); + + if (!wcid || !wcid->sta) + return; + + sta = container_of((void *)wcid, struct ieee80211_sta, drv_priv); + + if (status->signal <= 0) + ewma_signal_add(&wcid->rssi, -status->signal); + + wcid->inactive_count = 0; + + if (status->flag & RX_FLAG_8023) + return; + + if (!test_bit(MT_WCID_FLAG_CHECK_PS, &wcid->flags)) + return; + + if (ieee80211_is_pspoll(hdr->frame_control)) { + ieee80211_sta_pspoll(sta); + return; + } + + if (ieee80211_has_morefrags(hdr->frame_control) || + !(ieee80211_is_mgmt(hdr->frame_control) || + ieee80211_is_data(hdr->frame_control))) + return; + + ps = ieee80211_has_pm(hdr->frame_control); + + if (ps && (ieee80211_is_data_qos(hdr->frame_control) || + ieee80211_is_qos_nullfunc(hdr->frame_control))) + ieee80211_sta_uapsd_trigger(sta, tidno); + + if (!!test_bit(MT_WCID_FLAG_PS, &wcid->flags) == ps) + return; + + if (ps) + set_bit(MT_WCID_FLAG_PS, &wcid->flags); + + dev->drv->sta_ps(dev, sta, ps); + + if (!ps) + clear_bit(MT_WCID_FLAG_PS, &wcid->flags); + + ieee80211_sta_ps_transition(sta, ps); +} + +void mt76_rx_complete(struct mt76_dev *dev, struct sk_buff_head *frames, + struct napi_struct *napi) +{ + struct ieee80211_sta *sta; + struct ieee80211_hw *hw; + struct sk_buff *skb, *tmp; + LIST_HEAD(list); + + spin_lock(&dev->rx_lock); + while ((skb = __skb_dequeue(frames)) != NULL) { + struct sk_buff *nskb = skb_shinfo(skb)->frag_list; + + mt76_check_ccmp_pn(skb); + skb_shinfo(skb)->frag_list = NULL; + mt76_rx_convert(dev, skb, &hw, &sta); + ieee80211_rx_list(hw, sta, skb, &list); + + /* subsequent amsdu frames */ + while (nskb) { + skb = nskb; + nskb = nskb->next; + skb->next = NULL; + + mt76_rx_convert(dev, skb, &hw, &sta); + ieee80211_rx_list(hw, sta, skb, &list); + } + } + spin_unlock(&dev->rx_lock); + + if (!napi) { + netif_receive_skb_list(&list); + return; + } + + list_for_each_entry_safe(skb, tmp, &list, list) { + skb_list_del_init(skb); + napi_gro_receive(napi, skb); + } +} + +void mt76_rx_poll_complete(struct mt76_dev *dev, enum mt76_rxq_id q, + struct napi_struct *napi) +{ + struct sk_buff_head frames; + struct sk_buff *skb; + + __skb_queue_head_init(&frames); + + while ((skb = __skb_dequeue(&dev->rx_skb[q])) != NULL) { + mt76_check_sta(dev, skb); + mt76_rx_aggr_reorder(skb, &frames); + } + + mt76_rx_complete(dev, &frames, napi); +} +EXPORT_SYMBOL_GPL(mt76_rx_poll_complete); + +static int +mt76_sta_add(struct mt76_phy *phy, struct ieee80211_vif *vif, + struct ieee80211_sta *sta) +{ + struct mt76_wcid *wcid = (struct mt76_wcid *)sta->drv_priv; + struct mt76_dev *dev = phy->dev; + int ret; + int i; + + mutex_lock(&dev->mutex); + + ret = dev->drv->sta_add(dev, vif, sta); + if (ret) + goto out; + + for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { + struct mt76_txq *mtxq; + + if (!sta->txq[i]) + continue; + + mtxq = (struct mt76_txq *)sta->txq[i]->drv_priv; + mtxq->wcid = wcid->idx; + } + + ewma_signal_init(&wcid->rssi); + if (phy->band_idx == MT_BAND1) + mt76_wcid_mask_set(dev->wcid_phy_mask, wcid->idx); + wcid->phy_idx = phy->band_idx; + rcu_assign_pointer(dev->wcid[wcid->idx], wcid); + + mt76_packet_id_init(wcid); +out: + mutex_unlock(&dev->mutex); + + return ret; +} + +void __mt76_sta_remove(struct mt76_dev *dev, struct ieee80211_vif *vif, + struct ieee80211_sta *sta) +{ + struct mt76_wcid *wcid = (struct mt76_wcid *)sta->drv_priv; + int i, idx = wcid->idx; + + for (i = 0; i < ARRAY_SIZE(wcid->aggr); i++) + mt76_rx_aggr_stop(dev, wcid, i); + + if (dev->drv->sta_remove) + dev->drv->sta_remove(dev, vif, sta); + + mt76_packet_id_flush(dev, wcid); + + mt76_wcid_mask_clear(dev->wcid_mask, idx); + mt76_wcid_mask_clear(dev->wcid_phy_mask, idx); +} +EXPORT_SYMBOL_GPL(__mt76_sta_remove); + +static void +mt76_sta_remove(struct mt76_dev *dev, struct ieee80211_vif *vif, + struct ieee80211_sta *sta) +{ + mutex_lock(&dev->mutex); + __mt76_sta_remove(dev, vif, sta); + mutex_unlock(&dev->mutex); +} + +int mt76_sta_state(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + struct ieee80211_sta *sta, + enum ieee80211_sta_state old_state, + enum ieee80211_sta_state new_state) +{ + struct mt76_phy *phy = hw->priv; + struct mt76_dev *dev = phy->dev; + + if (old_state == IEEE80211_STA_NOTEXIST && + new_state == IEEE80211_STA_NONE) + return mt76_sta_add(phy, vif, sta); + + if (old_state == IEEE80211_STA_AUTH && + new_state == IEEE80211_STA_ASSOC && + dev->drv->sta_assoc) + dev->drv->sta_assoc(dev, vif, sta); + + if (old_state == IEEE80211_STA_NONE && + new_state == IEEE80211_STA_NOTEXIST) + mt76_sta_remove(dev, vif, sta); + + return 0; +} +EXPORT_SYMBOL_GPL(mt76_sta_state); + +void mt76_sta_pre_rcu_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + struct ieee80211_sta *sta) +{ + struct mt76_phy *phy = hw->priv; + struct mt76_dev *dev = phy->dev; + struct mt76_wcid *wcid = (struct mt76_wcid *)sta->drv_priv; + + mutex_lock(&dev->mutex); + spin_lock_bh(&dev->status_lock); + rcu_assign_pointer(dev->wcid[wcid->idx], NULL); + spin_unlock_bh(&dev->status_lock); + mutex_unlock(&dev->mutex); +} +EXPORT_SYMBOL_GPL(mt76_sta_pre_rcu_remove); + +int mt76_get_txpower(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + int *dbm) +{ + struct mt76_phy *phy = hw->priv; + int n_chains = hweight8(phy->antenna_mask); + int delta = mt76_tx_power_nss_delta(n_chains); + + *dbm = DIV_ROUND_UP(phy->txpower_cur + delta, 2); + + return 0; +} +EXPORT_SYMBOL_GPL(mt76_get_txpower); + +int mt76_init_sar_power(struct ieee80211_hw *hw, + const struct cfg80211_sar_specs *sar) +{ + struct mt76_phy *phy = hw->priv; + const struct cfg80211_sar_capa *capa = hw->wiphy->sar_capa; + int i; + + if (sar->type != NL80211_SAR_TYPE_POWER || !sar->num_sub_specs) + return -EINVAL; + + for (i = 0; i < sar->num_sub_specs; i++) { + u32 index = sar->sub_specs[i].freq_range_index; + /* SAR specifies power limitaton in 0.25dbm */ + s32 power = sar->sub_specs[i].power >> 1; + + if (power > 127 || power < -127) + power = 127; + + phy->frp[index].range = &capa->freq_ranges[index]; + phy->frp[index].power = power; + } + + return 0; +} +EXPORT_SYMBOL_GPL(mt76_init_sar_power); + +int mt76_get_sar_power(struct mt76_phy *phy, + struct ieee80211_channel *chan, + int power) +{ + const struct cfg80211_sar_capa *capa = phy->hw->wiphy->sar_capa; + int freq, i; + + if (!capa || !phy->frp) + return power; + + if (power > 127 || power < -127) + power = 127; + + freq = ieee80211_channel_to_frequency(chan->hw_value, chan->band); + for (i = 0 ; i < capa->num_freq_ranges; i++) { + if (phy->frp[i].range && + freq >= phy->frp[i].range->start_freq && + freq < phy->frp[i].range->end_freq) { + power = min_t(int, phy->frp[i].power, power); + break; + } + } + + return power; +} +EXPORT_SYMBOL_GPL(mt76_get_sar_power); + +static void +__mt76_csa_finish(void *priv, u8 *mac, struct ieee80211_vif *vif) +{ + if (vif->bss_conf.csa_active && ieee80211_beacon_cntdwn_is_complete(vif)) + ieee80211_csa_finish(vif); +} + +void mt76_csa_finish(struct mt76_dev *dev) +{ + if (!dev->csa_complete) + return; + + ieee80211_iterate_active_interfaces_atomic(dev->hw, + IEEE80211_IFACE_ITER_RESUME_ALL, + __mt76_csa_finish, dev); + + dev->csa_complete = 0; +} +EXPORT_SYMBOL_GPL(mt76_csa_finish); + +static void +__mt76_csa_check(void *priv, u8 *mac, struct ieee80211_vif *vif) +{ + struct mt76_dev *dev = priv; + + if (!vif->bss_conf.csa_active) + return; + + dev->csa_complete |= ieee80211_beacon_cntdwn_is_complete(vif); +} + +void mt76_csa_check(struct mt76_dev *dev) +{ + ieee80211_iterate_active_interfaces_atomic(dev->hw, + IEEE80211_IFACE_ITER_RESUME_ALL, + __mt76_csa_check, dev); +} +EXPORT_SYMBOL_GPL(mt76_csa_check); + +int +mt76_set_tim(struct ieee80211_hw *hw, struct ieee80211_sta *sta, bool set) +{ + return 0; +} +EXPORT_SYMBOL_GPL(mt76_set_tim); + +void mt76_insert_ccmp_hdr(struct sk_buff *skb, u8 key_id) +{ + struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb; + int hdr_len = ieee80211_get_hdrlen_from_skb(skb); + u8 *hdr, *pn = status->iv; + + __skb_push(skb, 8); + memmove(skb->data, skb->data + 8, hdr_len); + hdr = skb->data + hdr_len; + + hdr[0] = pn[5]; + hdr[1] = pn[4]; + hdr[2] = 0; + hdr[3] = 0x20 | (key_id << 6); + hdr[4] = pn[3]; + hdr[5] = pn[2]; + hdr[6] = pn[1]; + hdr[7] = pn[0]; + + status->flag &= ~RX_FLAG_IV_STRIPPED; +} +EXPORT_SYMBOL_GPL(mt76_insert_ccmp_hdr); + +int mt76_get_rate(struct mt76_dev *dev, + struct ieee80211_supported_band *sband, + int idx, bool cck) +{ + int i, offset = 0, len = sband->n_bitrates; + + if (cck) { + if (sband != &dev->phy.sband_2g.sband) + return 0; + + idx &= ~BIT(2); /* short preamble */ + } else if (sband == &dev->phy.sband_2g.sband) { + offset = 4; + } + + for (i = offset; i < len; i++) { + if ((sband->bitrates[i].hw_value & GENMASK(7, 0)) == idx) + return i; + } + + return 0; +} +EXPORT_SYMBOL_GPL(mt76_get_rate); + +void mt76_sw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + const u8 *mac) +{ + struct mt76_phy *phy = hw->priv; + + set_bit(MT76_SCANNING, &phy->state); +} +EXPORT_SYMBOL_GPL(mt76_sw_scan); + +void mt76_sw_scan_complete(struct ieee80211_hw *hw, struct ieee80211_vif *vif) +{ + struct mt76_phy *phy = hw->priv; + + clear_bit(MT76_SCANNING, &phy->state); +} +EXPORT_SYMBOL_GPL(mt76_sw_scan_complete); + +int mt76_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant) +{ + struct mt76_phy *phy = hw->priv; + struct mt76_dev *dev = phy->dev; + + mutex_lock(&dev->mutex); + *tx_ant = phy->antenna_mask; + *rx_ant = phy->antenna_mask; + mutex_unlock(&dev->mutex); + + return 0; +} +EXPORT_SYMBOL_GPL(mt76_get_antenna); + +struct mt76_queue * +mt76_init_queue(struct mt76_dev *dev, int qid, int idx, int n_desc, + int ring_base, u32 flags) +{ + struct mt76_queue *hwq; + int err; + + hwq = devm_kzalloc(dev->dev, sizeof(*hwq), GFP_KERNEL); + if (!hwq) + return ERR_PTR(-ENOMEM); + + hwq->flags = flags; + + err = dev->queue_ops->alloc(dev, hwq, idx, n_desc, 0, ring_base); + if (err < 0) + return ERR_PTR(err); + + return hwq; +} +EXPORT_SYMBOL_GPL(mt76_init_queue); + +u16 mt76_calculate_default_rate(struct mt76_phy *phy, int rateidx) +{ + int offset = 0; + + if (phy->chandef.chan->band != NL80211_BAND_2GHZ) + offset = 4; + + /* pick the lowest rate for hidden nodes */ + if (rateidx < 0) + rateidx = 0; + + rateidx += offset; + if (rateidx >= ARRAY_SIZE(mt76_rates)) + rateidx = offset; + + return mt76_rates[rateidx].hw_value; +} +EXPORT_SYMBOL_GPL(mt76_calculate_default_rate); + +void mt76_ethtool_worker(struct mt76_ethtool_worker_info *wi, + struct mt76_sta_stats *stats) +{ + int i, ei = wi->initial_stat_idx; + u64 *data = wi->data; + + wi->sta_count++; + + data[ei++] += stats->tx_mode[MT_PHY_TYPE_CCK]; + data[ei++] += stats->tx_mode[MT_PHY_TYPE_OFDM]; + data[ei++] += stats->tx_mode[MT_PHY_TYPE_HT]; + data[ei++] += stats->tx_mode[MT_PHY_TYPE_HT_GF]; + data[ei++] += stats->tx_mode[MT_PHY_TYPE_VHT]; + data[ei++] += stats->tx_mode[MT_PHY_TYPE_HE_SU]; + data[ei++] += stats->tx_mode[MT_PHY_TYPE_HE_EXT_SU]; + data[ei++] += stats->tx_mode[MT_PHY_TYPE_HE_TB]; + data[ei++] += stats->tx_mode[MT_PHY_TYPE_HE_MU]; + + for (i = 0; i < ARRAY_SIZE(stats->tx_bw); i++) + data[ei++] += stats->tx_bw[i]; + + for (i = 0; i < 12; i++) + data[ei++] += stats->tx_mcs[i]; + + wi->worker_stat_count = ei - wi->initial_stat_idx; +} +EXPORT_SYMBOL_GPL(mt76_ethtool_worker); + +enum mt76_dfs_state mt76_phy_dfs_state(struct mt76_phy *phy) +{ + struct ieee80211_hw *hw = phy->hw; + struct mt76_dev *dev = phy->dev; + + if (dev->region == NL80211_DFS_UNSET || + test_bit(MT76_SCANNING, &phy->state)) + return MT_DFS_STATE_DISABLED; + + if (!hw->conf.radar_enabled) { + if ((hw->conf.flags & IEEE80211_CONF_MONITOR) && + (phy->chandef.chan->flags & IEEE80211_CHAN_RADAR)) + return MT_DFS_STATE_ACTIVE; + + return MT_DFS_STATE_DISABLED; + } + + if (!cfg80211_reg_can_beacon(hw->wiphy, &phy->chandef, NL80211_IFTYPE_AP)) + return MT_DFS_STATE_CAC; + + return MT_DFS_STATE_ACTIVE; +} +EXPORT_SYMBOL_GPL(mt76_phy_dfs_state); |