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linux-zen-server/drivers/net/wireless/mediatek/mt76/mac80211.c

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42 KiB
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Initial commit
2023-08-30 17:53:23 +02:00
// SPDX-License-Identifier: ISC
/*
* Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
*/
#include <linux/sched.h>
#include <linux/of.h>
#include <net/page_pool.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_phy *phy)
{
struct mt76_dev *dev = phy->dev;
struct ieee80211_hw *hw = phy->hw;
if (!phy->leds.cdev.brightness_set && !phy->leds.cdev.blink_set)
return 0;
snprintf(phy->leds.name, sizeof(phy->leds.name), "mt76-%s",
wiphy_name(hw->wiphy));
phy->leds.cdev.name = phy->leds.name;
phy->leds.cdev.default_trigger =
ieee80211_create_tpt_led_trigger(hw,
IEEE80211_TPT_LEDTRIG_FL_RADIO,
mt76_tpt_blink,
ARRAY_SIZE(mt76_tpt_blink));
if (phy == &dev->phy) {
struct device_node *np = dev->dev->of_node;
np = of_get_child_by_name(np, "led");
if (np) {
int led_pin;
if (!of_property_read_u32(np, "led-sources", &led_pin))
phy->leds.pin = led_pin;
phy->leds.al = of_property_read_bool(np,
"led-active-low");
of_node_put(np);
}
}
return led_classdev_register(dev->dev, &phy->leds.cdev);
}
static void mt76_led_cleanup(struct mt76_phy *phy)
{
if (!phy->leds.cdev.brightness_set && !phy->leds.cdev.blink_set)
return;
led_classdev_unregister(&phy->leds.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);
if (!(dev->drv->drv_flags & MT_DRV_AMSDU_OFFLOAD)) {
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;
}
if (IS_ENABLED(CONFIG_MT76_LEDS)) {
ret = mt76_led_init(phy);
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;
set_bit(MT76_STATE_REGISTERED, &phy->state);
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;
if (!test_bit(MT76_STATE_REGISTERED, &phy->state))
return;
if (IS_ENABLED(CONFIG_MT76_LEDS))
mt76_led_cleanup(phy);
mt76_tx_status_check(dev, true);
ieee80211_unregister_hw(phy->hw);
dev->phys[phy->band_idx] = NULL;
}
EXPORT_SYMBOL_GPL(mt76_unregister_phy);
int mt76_create_page_pool(struct mt76_dev *dev, struct mt76_queue *q)
{
struct page_pool_params pp_params = {
.order = 0,
.flags = PP_FLAG_PAGE_FRAG,
.nid = NUMA_NO_NODE,
.dev = dev->dma_dev,
};
int idx = q - dev->q_rx;
switch (idx) {
case MT_RXQ_MAIN:
case MT_RXQ_BAND1:
case MT_RXQ_BAND2:
pp_params.pool_size = 256;
break;
default:
pp_params.pool_size = 16;
break;
}
if (mt76_is_mmio(dev)) {
/* rely on page_pool for DMA mapping */
pp_params.flags |= PP_FLAG_DMA_MAP | PP_FLAG_DMA_SYNC_DEV;
pp_params.dma_dir = DMA_FROM_DEVICE;
pp_params.max_len = PAGE_SIZE;
pp_params.offset = 0;
}
q->page_pool = page_pool_create(&pp_params);
if (IS_ERR(q->page_pool)) {
int err = PTR_ERR(q->page_pool);
q->page_pool = NULL;
return err;
}
return 0;
}
EXPORT_SYMBOL_GPL(mt76_create_page_pool);
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);
spin_lock_init(&dev->wed_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);
spin_lock_init(&dev->rx_token_lock);
idr_init(&dev->rx_token);
INIT_LIST_HEAD(&dev->wcid_list);
INIT_LIST_HEAD(&dev->txwi_cache);
INIT_LIST_HEAD(&dev->rxwi_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(phy);
if (ret)
return ret;
}
ret = ieee80211_register_hw(hw);
if (ret)
return ret;
WARN_ON(mt76_worker_setup(hw, &dev->tx_worker, NULL, "tx"));
set_bit(MT76_STATE_REGISTERED, &phy->state);
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 (!test_bit(MT76_STATE_REGISTERED, &dev->phy.state))
return;
if (IS_ENABLED(CONFIG_MT76_LEDS))
mt76_led_cleanup(&dev->phy);
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);
int mt76_rx_signal(u8 chain_mask, s8 *chain_signal)
{
int signal = -128;
u8 chains;
for (chains = chain_mask; 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;
}
EXPORT_SYMBOL(mt76_rx_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.chains, mstat.chain_signal);
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);
if (mtk_wed_device_active(&dev->mmio.wed))
__skb_queue_tail(&frames, skb);
else
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, bool eht)
{
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];
if (eht) {
data[ei++] += stats->tx_mode[MT_PHY_TYPE_EHT_SU];
data[ei++] += stats->tx_mode[MT_PHY_TYPE_EHT_TRIG];
data[ei++] += stats->tx_mode[MT_PHY_TYPE_EHT_MU];
}
for (i = 0; i < (ARRAY_SIZE(stats->tx_bw) - !eht); i++)
data[ei++] += stats->tx_bw[i];
for (i = 0; i < (eht ? 14 : 12); i++)
data[ei++] += stats->tx_mcs[i];
wi->worker_stat_count = ei - wi->initial_stat_idx;
}
EXPORT_SYMBOL_GPL(mt76_ethtool_worker);
void mt76_ethtool_page_pool_stats(struct mt76_dev *dev, u64 *data, int *index)
{
#ifdef CONFIG_PAGE_POOL_STATS
struct page_pool_stats stats = {};
int i;
mt76_for_each_q_rx(dev, i)
page_pool_get_stats(dev->q_rx[i].page_pool, &stats);
page_pool_ethtool_stats_get(data, &stats);
*index += page_pool_ethtool_stats_get_count();
#endif
}
EXPORT_SYMBOL_GPL(mt76_ethtool_page_pool_stats);
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);