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OpenCloudOS-Kernel/drivers/net/wireless/mediatek/mt76/mac80211.c

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mt76: add common code shared between multiple chipsets This will be used by drivers for MT76x2e, MT7603e and MT7628 Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-11-21 17:50:52 +08:00
/*
* Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#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, \
}
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(149, 5745),
CHAN5G(153, 5765),
CHAN5G(157, 5785),
CHAN5G(161, 5805),
CHAN5G(165, 5825),
};
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 },
};
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");
}
return devm_led_classdev_register(dev->dev, &dev->led_cdev);
}
mt76: add mt76_init_stream_cap routine Add mt76_init_stream_cap utility routine to set ht/vht sta capabilities related to number of streams currently used by the device (it will be used by mac80211 set_antenna callback) Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-02-24 23:54:13 +08:00
static void mt76_init_stream_cap(struct mt76_dev *dev,
struct ieee80211_supported_band *sband,
bool vht)
{
struct ieee80211_sta_ht_cap *ht_cap = &sband->ht_cap;
int i, nstream = __sw_hweight8(dev->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;
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);
}
mt76x2: add mac80211 {set,get}_antenna callbacks Add capability to select tx/rx antennas. Possible values are: - 1: to use only the first antenna - 2: to use only the second antenna - 3: to use both of them Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-02-24 23:54:14 +08:00
void mt76_set_stream_caps(struct mt76_dev *dev, bool vht)
{
if (dev->cap.has_2ghz)
mt76_init_stream_cap(dev, &dev->sband_2g.sband, false);
if (dev->cap.has_5ghz)
mt76_init_stream_cap(dev, &dev->sband_5g.sband, vht);
}
EXPORT_SYMBOL_GPL(mt76_set_stream_caps);
mt76: add common code shared between multiple chipsets This will be used by drivers for MT76x2e, MT7603e and MT7628 Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-11-21 17:50:52 +08:00
static int
mt76_init_sband(struct mt76_dev *dev, struct mt76_sband *msband,
const struct ieee80211_channel *chan, int n_chan,
struct ieee80211_rate *rates, int n_rates, bool vht)
{
struct ieee80211_supported_band *sband = &msband->sband;
struct ieee80211_sta_ht_cap *ht_cap;
struct ieee80211_sta_vht_cap *vht_cap;
void *chanlist;
int size;
size = n_chan * sizeof(*chan);
chanlist = devm_kmemdup(dev->dev, chan, size, GFP_KERNEL);
if (!chanlist)
return -ENOMEM;
treewide: devm_kzalloc() -> devm_kcalloc() The devm_kzalloc() function has a 2-factor argument form, devm_kcalloc(). This patch replaces cases of: devm_kzalloc(handle, a * b, gfp) with: devm_kcalloc(handle, a * b, gfp) as well as handling cases of: devm_kzalloc(handle, a * b * c, gfp) with: devm_kzalloc(handle, array3_size(a, b, c), gfp) as it's slightly less ugly than: devm_kcalloc(handle, array_size(a, b), c, gfp) This does, however, attempt to ignore constant size factors like: devm_kzalloc(handle, 4 * 1024, gfp) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. Some manual whitespace fixes were needed in this patch, as Coccinelle really liked to write "=devm_kcalloc..." instead of "= devm_kcalloc...". The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ expression HANDLE; type TYPE; expression THING, E; @@ ( devm_kzalloc(HANDLE, - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | devm_kzalloc(HANDLE, - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression HANDLE; expression COUNT; typedef u8; typedef __u8; @@ ( devm_kzalloc(HANDLE, - sizeof(u8) * (COUNT) + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(__u8) * (COUNT) + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(char) * (COUNT) + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(unsigned char) * (COUNT) + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(u8) * COUNT + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(__u8) * COUNT + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(char) * COUNT + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ expression HANDLE; type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * (COUNT_ID) + COUNT_ID, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * COUNT_ID + COUNT_ID, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * (COUNT_CONST) + COUNT_CONST, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * COUNT_CONST + COUNT_CONST, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * (COUNT_ID) + COUNT_ID, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * COUNT_ID + COUNT_ID, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * (COUNT_CONST) + COUNT_CONST, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * COUNT_CONST + COUNT_CONST, sizeof(THING) , ...) ) // 2-factor product, only identifiers. @@ expression HANDLE; identifier SIZE, COUNT; @@ - devm_kzalloc + devm_kcalloc (HANDLE, - SIZE * COUNT + COUNT, SIZE , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression HANDLE; expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( devm_kzalloc(HANDLE, - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression HANDLE; expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( devm_kzalloc(HANDLE, - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ expression HANDLE; identifier STRIDE, SIZE, COUNT; @@ ( devm_kzalloc(HANDLE, - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products, // when they're not all constants... @@ expression HANDLE; expression E1, E2, E3; constant C1, C2, C3; @@ ( devm_kzalloc(HANDLE, C1 * C2 * C3, ...) | devm_kzalloc(HANDLE, - (E1) * E2 * E3 + array3_size(E1, E2, E3) , ...) | devm_kzalloc(HANDLE, - (E1) * (E2) * E3 + array3_size(E1, E2, E3) , ...) | devm_kzalloc(HANDLE, - (E1) * (E2) * (E3) + array3_size(E1, E2, E3) , ...) | devm_kzalloc(HANDLE, - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants, // keeping sizeof() as the second factor argument. @@ expression HANDLE; expression THING, E1, E2; type TYPE; constant C1, C2, C3; @@ ( devm_kzalloc(HANDLE, sizeof(THING) * C2, ...) | devm_kzalloc(HANDLE, sizeof(TYPE) * C2, ...) | devm_kzalloc(HANDLE, C1 * C2 * C3, ...) | devm_kzalloc(HANDLE, C1 * C2, ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * (E2) + E2, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * E2 + E2, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * (E2) + E2, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * E2 + E2, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - (E1) * E2 + E1, E2 , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - (E1) * (E2) + E1, E2 , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - E1 * E2 + E1, E2 , ...) ) Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-13 05:07:58 +08:00
msband->chan = devm_kcalloc(dev->dev, n_chan, sizeof(*msband->chan),
mt76: add common code shared between multiple chipsets This will be used by drivers for MT76x2e, MT7603e and MT7628 Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-11-21 17:50:52 +08:00
GFP_KERNEL);
if (!msband->chan)
return -ENOMEM;
sband->channels = chanlist;
sband->n_channels = n_chan;
sband->bitrates = rates;
sband->n_bitrates = n_rates;
dev->chandef.chan = &sband->channels[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;
ht_cap->ampdu_density = IEEE80211_HT_MPDU_DENSITY_4;
mt76: add mt76_init_stream_cap routine Add mt76_init_stream_cap utility routine to set ht/vht sta capabilities related to number of streams currently used by the device (it will be used by mac80211 set_antenna callback) Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-02-24 23:54:13 +08:00
mt76_init_stream_cap(dev, sband, vht);
mt76: add common code shared between multiple chipsets This will be used by drivers for MT76x2e, MT7603e and MT7628 Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-11-21 17:50:52 +08:00
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 |
mt76: add missing VHT maximum A-MPDU length capability Signficantly improves throughput with some clients Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-04-04 03:52:49 +08:00
IEEE80211_VHT_CAP_SHORT_GI_80 |
(3 << IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT);
mt76: add common code shared between multiple chipsets This will be used by drivers for MT76x2e, MT7603e and MT7628 Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-11-21 17:50:52 +08:00
return 0;
}
static int
mt76_init_sband_2g(struct mt76_dev *dev, struct ieee80211_rate *rates,
int n_rates)
{
dev->hw->wiphy->bands[NL80211_BAND_2GHZ] = &dev->sband_2g.sband;
return mt76_init_sband(dev, &dev->sband_2g,
mt76_channels_2ghz,
ARRAY_SIZE(mt76_channels_2ghz),
rates, n_rates, false);
}
static int
mt76_init_sband_5g(struct mt76_dev *dev, struct ieee80211_rate *rates,
int n_rates, bool vht)
{
dev->hw->wiphy->bands[NL80211_BAND_5GHZ] = &dev->sband_5g.sband;
return mt76_init_sband(dev, &dev->sband_5g,
mt76_channels_5ghz,
ARRAY_SIZE(mt76_channels_5ghz),
rates, n_rates, vht);
}
static void
mt76_check_sband(struct mt76_dev *dev, int band)
{
struct ieee80211_supported_band *sband = dev->hw->wiphy->bands[band];
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)
return;
sband->n_channels = 0;
dev->hw->wiphy->bands[band] = NULL;
}
mt76: move ieee80211_hw allocation to common core Allows it to be shared between different drivers and locks to be initialized earlier Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-05-20 13:43:47 +08:00
struct mt76_dev *
mt76_alloc_device(unsigned int size, const struct ieee80211_ops *ops)
{
struct ieee80211_hw *hw;
struct mt76_dev *dev;
hw = ieee80211_alloc_hw(size, ops);
if (!hw)
return NULL;
dev = hw->priv;
dev->hw = hw;
spin_lock_init(&dev->rx_lock);
spin_lock_init(&dev->lock);
spin_lock_init(&dev->cc_lock);
mt76: create new mt76x02-lib module for common mt76x{0,2} code Move rxfilter and mutex to common structure. Create mt76x02-lib.ko for mt76x0 and mt76x2 common functions and create new unified mt76x02_configure_filter() function there. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-08-29 19:16:35 +08:00
mutex_init(&dev->mutex);
mt76: wait for pending tx to complete before switching channel Reduces interruption caused by scanning Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-05-20 13:43:48 +08:00
init_waitqueue_head(&dev->tx_wait);
mt76: add support for reporting tx status with skb MT76x2/MT76x0 has somewhat unreliable tx status reporting, and for that reason the driver currently does not report per-skb tx ack status at all. This breaks things like client idle polling, which relies on the tx ack status of a transmitted nullfunc frame. This patch adds code to report skb-attached tx status if requested by mac80211 or the rate control module. Since tx status is polled from a simple FIFO register, the code needs to account for the possibility of tx status events getting lost. The code keeps a list of skbs for which tx status is required and passes them to mac80211 once tx status has been filled in and the DMA queue is done with it. If a tx status event is not received after one second, the status rates are cleared, and a succesful ACK is indicated to avoid spurious disassoc during assoc or client polling. Signed-off-by: Felix Fietkau <nbd@nbd.name>
2018-10-25 22:11:34 +08:00
skb_queue_head_init(&dev->status_list);
mt76: move ieee80211_hw allocation to common core Allows it to be shared between different drivers and locks to be initialized earlier Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-05-20 13:43:47 +08:00
return dev;
}
EXPORT_SYMBOL_GPL(mt76_alloc_device);
mt76: add common code shared between multiple chipsets This will be used by drivers for MT76x2e, MT7603e and MT7628 Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-11-21 17:50:52 +08:00
int mt76_register_device(struct mt76_dev *dev, bool vht,
struct ieee80211_rate *rates, int n_rates)
{
struct ieee80211_hw *hw = dev->hw;
struct wiphy *wiphy = hw->wiphy;
int ret;
dev_set_drvdata(dev->dev, dev);
INIT_LIST_HEAD(&dev->txwi_cache);
SET_IEEE80211_DEV(hw, dev->dev);
SET_IEEE80211_PERM_ADDR(hw, dev->macaddr);
wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR;
mt76: Enable NL80211_EXT_FEATURE_CQM_RSSI_LIST Enable the use of CQM_RSSI_LIST with mt76-devices. The change has been tested with the mt7602, mt7603 and mt7621 PCI wifi-cards. I passed a list of RSSI thresholds to the driver, and when disconnecting/connecting the antenna(s) I got an event each time the RSSI went above/below a threshold. While I have not been able to test the change with any of the mt76 USB-devices (no access to a device), the RX RSSI management code is shared between the two device types. Thus, CQM should also work with the mt76 USB-devices. Signed-off-by: Kristian Evensen <kristian.evensen@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-09-01 16:38:34 +08:00
wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
mt76: initialize available_antennas_{tx,rx} info Initialize available_antennas related info in wiphy data structure according to antenna_mask field; antenna_mask info is initialized in device specific code and will be used in mac80211 {set,get}_antenna callbacks Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-02-24 23:54:12 +08:00
wiphy->available_antennas_tx = dev->antenna_mask;
wiphy->available_antennas_rx = dev->antenna_mask;
mt76: add common code shared between multiple chipsets This will be used by drivers for MT76x2e, MT7603e and MT7628 Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-11-21 17:50:52 +08:00
hw->txq_data_size = sizeof(struct mt76_txq);
hw->max_tx_fragments = 16;
ieee80211_hw_set(hw, SIGNAL_DBM);
ieee80211_hw_set(hw, PS_NULLFUNC_STACK);
ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING);
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, TX_AMSDU);
ieee80211_hw_set(hw, TX_FRAG_LIST);
ieee80211_hw_set(hw, MFP_CAPABLE);
mt76: implement AP_LINK_PS With software A-MPDU reordering in place, frames that notify mac80211 of powersave changes are reordered as well, which can cause connection stalls. Fix this by implementing powersave state processing in the driver. Fixes: aee5b8cf2477 ("mt76: implement A-MPDU rx reordering in the driver code") Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-27 23:02:03 +08:00
ieee80211_hw_set(hw, AP_LINK_PS);
mt76: add support for reporting tx status with skb MT76x2/MT76x0 has somewhat unreliable tx status reporting, and for that reason the driver currently does not report per-skb tx ack status at all. This breaks things like client idle polling, which relies on the tx ack status of a transmitted nullfunc frame. This patch adds code to report skb-attached tx status if requested by mac80211 or the rate control module. Since tx status is polled from a simple FIFO register, the code needs to account for the possibility of tx status events getting lost. The code keeps a list of skbs for which tx status is required and passes them to mac80211 once tx status has been filled in and the DMA queue is done with it. If a tx status event is not received after one second, the status rates are cleared, and a succesful ACK is indicated to avoid spurious disassoc during assoc or client polling. Signed-off-by: Felix Fietkau <nbd@nbd.name>
2018-10-25 22:11:34 +08:00
ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
mt76: add common code shared between multiple chipsets This will be used by drivers for MT76x2e, MT7603e and MT7628 Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-11-21 17:50:52 +08:00
wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
if (dev->cap.has_2ghz) {
ret = mt76_init_sband_2g(dev, rates, n_rates);
if (ret)
return ret;
}
if (dev->cap.has_5ghz) {
ret = mt76_init_sband_5g(dev, rates + 4, n_rates - 4, vht);
if (ret)
return ret;
}
wiphy_read_of_freq_limits(dev->hw->wiphy);
mt76_check_sband(dev, NL80211_BAND_2GHZ);
mt76_check_sband(dev, NL80211_BAND_5GHZ);
ret = mt76_led_init(dev);
if (ret)
return ret;
return ieee80211_register_hw(hw);
}
EXPORT_SYMBOL_GPL(mt76_register_device);
void mt76_unregister_device(struct mt76_dev *dev)
{
struct ieee80211_hw *hw = dev->hw;
mt76: avoid queue/status spinlocks while passing tx status to mac80211 There is some code in the mac80211 tx status processing code that could potentially call back into the tx codepath. To avoid deadlocks, make sure that no tx related spinlocks are taken during the ieee80211_tx_status call. Signed-off-by: Felix Fietkau <nbd@nbd.name>
2018-11-06 04:11:39 +08:00
mt76_tx_status_check(dev, NULL, true);
mt76: add common code shared between multiple chipsets This will be used by drivers for MT76x2e, MT7603e and MT7628 Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-11-21 17:50:52 +08:00
ieee80211_unregister_hw(hw);
mt76_tx_free(dev);
}
EXPORT_SYMBOL_GPL(mt76_unregister_device);
void mt76_rx(struct mt76_dev *dev, enum mt76_rxq_id q, struct sk_buff *skb)
{
if (!test_bit(MT76_STATE_RUNNING, &dev->state)) {
dev_kfree_skb(skb);
return;
}
__skb_queue_tail(&dev->rx_skb[q], skb);
}
EXPORT_SYMBOL_GPL(mt76_rx);
mt76: wait for pending tx to complete before switching channel Reduces interruption caused by scanning Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-05-20 13:43:48 +08:00
static bool mt76_has_tx_pending(struct mt76_dev *dev)
{
int i;
for (i = 0; i < ARRAY_SIZE(dev->q_tx); i++) {
if (dev->q_tx[i].queued)
return true;
}
return false;
}
mt76: add common code shared between multiple chipsets This will be used by drivers for MT76x2e, MT7603e and MT7628 Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-11-21 17:50:52 +08:00
void mt76_set_channel(struct mt76_dev *dev)
{
struct ieee80211_hw *hw = dev->hw;
struct cfg80211_chan_def *chandef = &hw->conf.chandef;
struct mt76_channel_state *state;
bool offchannel = hw->conf.flags & IEEE80211_CONF_OFFCHANNEL;
mt76: wait for pending tx to complete before switching channel Reduces interruption caused by scanning Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-05-20 13:43:48 +08:00
int timeout = HZ / 5;
mt76: add common code shared between multiple chipsets This will be used by drivers for MT76x2e, MT7603e and MT7628 Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-11-21 17:50:52 +08:00
mt76: only stop tx queues on offchannel, not during the entire scan During scans, mac80211 frequently switches back to the home channel to minimize interruption of ongoing traffic. Keep regular tx queues active during that time. Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-05-20 13:43:45 +08:00
if (offchannel)
set_bit(MT76_OFFCHANNEL, &dev->state);
else
clear_bit(MT76_OFFCHANNEL, &dev->state);
mt76: wait for pending tx to complete before switching channel Reduces interruption caused by scanning Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-05-20 13:43:48 +08:00
wait_event_timeout(dev->tx_wait, !mt76_has_tx_pending(dev), timeout);
mt76: add common code shared between multiple chipsets This will be used by drivers for MT76x2e, MT7603e and MT7628 Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-11-21 17:50:52 +08:00
if (dev->drv->update_survey)
dev->drv->update_survey(dev);
dev->chandef = *chandef;
if (!offchannel)
dev->main_chan = chandef->chan;
if (chandef->chan != dev->main_chan) {
state = mt76_channel_state(dev, chandef->chan);
memset(state, 0, sizeof(*state));
}
}
EXPORT_SYMBOL_GPL(mt76_set_channel);
int mt76_get_survey(struct ieee80211_hw *hw, int idx,
struct survey_info *survey)
{
struct mt76_dev *dev = hw->priv;
struct mt76_sband *sband;
struct ieee80211_channel *chan;
struct mt76_channel_state *state;
int ret = 0;
if (idx == 0 && dev->drv->update_survey)
dev->drv->update_survey(dev);
sband = &dev->sband_2g;
if (idx >= sband->sband.n_channels) {
idx -= sband->sband.n_channels;
sband = &dev->sband_5g;
}
if (idx >= sband->sband.n_channels)
return -ENOENT;
chan = &sband->sband.channels[idx];
state = mt76_channel_state(dev, chan);
memset(survey, 0, sizeof(*survey));
survey->channel = chan;
survey->filled = SURVEY_INFO_TIME | SURVEY_INFO_TIME_BUSY;
if (chan == dev->main_chan)
survey->filled |= SURVEY_INFO_IN_USE;
spin_lock_bh(&dev->cc_lock);
survey->time = div_u64(state->cc_active, 1000);
survey->time_busy = div_u64(state->cc_busy, 1000);
spin_unlock_bh(&dev->cc_lock);
return ret;
}
EXPORT_SYMBOL_GPL(mt76_get_survey);
mt76: validate rx CCMP PN Apparently hardware does not perform CCMP PN validation in hardware, so we need to take care of this in the driver. This is important for protecting against replay attacks. Since validation of fragmented frames is more complex, the CCMP header for those is preserved. To keep the counter in sync, the first fragment is verified by both mt76 and mac80211, and all other fragments only by mac80211. Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-25 18:44:24 +08:00
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)
wcid->rx_check_pn = true;
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));
}
}
EXPORT_SYMBOL(mt76_wcid_key_setup);
mt76: use mt76_rx_status in mt76x0 Make rx status processing similar to mt76x2. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2018-09-04 22:41:11 +08:00
struct ieee80211_sta *mt76_rx_convert(struct sk_buff *skb)
mt76: add an intermediate struct for rx status information Preparation for passing in more internal rx data via skb->cb Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-24 23:19:12 +08:00
{
struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(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->rate_idx = mstat.rate_idx;
status->nss = mstat.nss;
status->band = mstat.band;
status->signal = mstat.signal;
status->chains = mstat.chains;
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));
mt76: get station pointer by wcid and pass it to mac80211 Avoids the rhashtable lookup based on the MAC address inside mac80211 Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-24 23:19:13 +08:00
return wcid_to_sta(mstat.wcid);
mt76: add an intermediate struct for rx status information Preparation for passing in more internal rx data via skb->cb Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-24 23:19:12 +08:00
}
mt76: use mt76_rx_status in mt76x0 Make rx status processing similar to mt76x2. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2018-09-04 22:41:11 +08:00
EXPORT_SYMBOL(mt76_rx_convert);
mt76: add an intermediate struct for rx status information Preparation for passing in more internal rx data via skb->cb Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-24 23:19:12 +08:00
mt76: validate rx CCMP PN Apparently hardware does not perform CCMP PN validation in hardware, so we need to take care of this in the driver. This is important for protecting against replay attacks. Since validation of fragmented frames is more complex, the CCMP header for those is preserved. To keep the counter in sync, the first fragment is verified by both mt76 and mac80211, and all other fragments only by mac80211. Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-25 18:44:24 +08:00
static int
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 ret;
if (!(status->flag & RX_FLAG_DECRYPTED))
return 0;
if (!wcid || !wcid->rx_check_pn)
return 0;
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.
*/
hdr = (struct ieee80211_hdr *) skb->data;
if (ieee80211_is_frag(hdr) &&
!ieee80211_is_first_frag(hdr->frame_control))
return 0;
}
BUILD_BUG_ON(sizeof(status->iv) != sizeof(wcid->rx_key_pn[0]));
ret = memcmp(status->iv, wcid->rx_key_pn[status->tid],
sizeof(status->iv));
if (ret <= 0)
return -EINVAL; /* replay */
memcpy(wcid->rx_key_pn[status->tid], status->iv, sizeof(status->iv));
if (status->flag & RX_FLAG_IV_STRIPPED)
status->flag |= RX_FLAG_PN_VALIDATED;
return 0;
}
mt76: implement AP_LINK_PS With software A-MPDU reordering in place, frames that notify mac80211 of powersave changes are reordered as well, which can cause connection stalls. Fix this by implementing powersave state processing in the driver. Fixes: aee5b8cf2477 ("mt76: implement A-MPDU rx reordering in the driver code") Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-27 23:02:03 +08:00
static void
mt76_check_ps(struct mt76_dev *dev, struct sk_buff *skb)
{
struct mt76_rx_status *status = (struct mt76_rx_status *) skb->cb;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
struct ieee80211_sta *sta;
struct mt76_wcid *wcid = status->wcid;
bool ps;
mt76: fix handling ps-poll frames Hardware station lookup for pspoll frames can fail, which makes the driver ignore ps-poll frames. Fix the resulting powersave issues by looking up the station for pspoll frames in software Signed-off-by: Felix Fietkau <nbd@nbd.name>
2018-09-29 19:13:09 +08:00
if (ieee80211_is_pspoll(hdr->frame_control) && !wcid) {
sta = ieee80211_find_sta_by_ifaddr(dev->hw, hdr->addr2, NULL);
if (sta)
wcid = status->wcid = (struct mt76_wcid *) sta->drv_priv;
}
mt76: implement AP_LINK_PS With software A-MPDU reordering in place, frames that notify mac80211 of powersave changes are reordered as well, which can cause connection stalls. Fix this by implementing powersave state processing in the driver. Fixes: aee5b8cf2477 ("mt76: implement A-MPDU rx reordering in the driver code") Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-27 23:02:03 +08:00
if (!wcid || !wcid->sta)
return;
sta = container_of((void *) wcid, struct ieee80211_sta, drv_priv);
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, status->tid);
if (!!test_bit(MT_WCID_FLAG_PS, &wcid->flags) == ps)
return;
mt76: stop tx queues from the driver callback instead of common code Allows the driver to control whether to send a BlockAckReq after waking up. MT76x2 needs this set to true, for MT7603 (to be submitted later) it needs to be false. Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-04-04 03:52:48 +08:00
if (ps)
mt76: implement AP_LINK_PS With software A-MPDU reordering in place, frames that notify mac80211 of powersave changes are reordered as well, which can cause connection stalls. Fix this by implementing powersave state processing in the driver. Fixes: aee5b8cf2477 ("mt76: implement A-MPDU rx reordering in the driver code") Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-27 23:02:03 +08:00
set_bit(MT_WCID_FLAG_PS, &wcid->flags);
mt76: stop tx queues from the driver callback instead of common code Allows the driver to control whether to send a BlockAckReq after waking up. MT76x2 needs this set to true, for MT7603 (to be submitted later) it needs to be false. Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-04-04 03:52:48 +08:00
else
mt76: implement AP_LINK_PS With software A-MPDU reordering in place, frames that notify mac80211 of powersave changes are reordered as well, which can cause connection stalls. Fix this by implementing powersave state processing in the driver. Fixes: aee5b8cf2477 ("mt76: implement A-MPDU rx reordering in the driver code") Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-27 23:02:03 +08:00
clear_bit(MT_WCID_FLAG_PS, &wcid->flags);
dev->drv->sta_ps(dev, sta, ps);
mt76: toggle driver station powersave bit before notifying mac80211 Avoids race conditions from mac80211 enqueueing tx packets before the tx-drop bit is cleared Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-04-04 03:52:50 +08:00
ieee80211_sta_ps_transition(sta, ps);
mt76: implement AP_LINK_PS With software A-MPDU reordering in place, frames that notify mac80211 of powersave changes are reordered as well, which can cause connection stalls. Fix this by implementing powersave state processing in the driver. Fixes: aee5b8cf2477 ("mt76: implement A-MPDU rx reordering in the driver code") Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-27 23:02:03 +08:00
}
mt76: split mt76_rx_complete Add a separate function for processing frames after A-MPDU reordering, reduce code duplication Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-24 23:19:15 +08:00
void mt76_rx_complete(struct mt76_dev *dev, struct sk_buff_head *frames,
mt76x2: add napi struct to mt76_rx_poll_complete/mt76_rx_complete signatures in order to reuse mt76_rx_complete routine supporting mt76x2u based devices add napi struct to mt76_rx_poll_complete and mt76_rx_complete routine signatures and do not fetch it according to the rx queue index Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-07-31 16:09:08 +08:00
struct napi_struct *napi)
mt76: add common code shared between multiple chipsets This will be used by drivers for MT76x2e, MT7603e and MT7628 Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-11-21 17:50:52 +08:00
{
mt76: get station pointer by wcid and pass it to mac80211 Avoids the rhashtable lookup based on the MAC address inside mac80211 Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-24 23:19:13 +08:00
struct ieee80211_sta *sta;
mt76: split mt76_rx_complete Add a separate function for processing frames after A-MPDU reordering, reduce code duplication Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-24 23:19:15 +08:00
struct sk_buff *skb;
mt76: fix concurrent rx calls on A-MPDU release Add a spinlock in mt76_rx_complete. Without this, multiple stats updates could happen in parallel, which can lead to deadlocks. There are probably more corner cases fixed by this change. Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-04-25 17:11:21 +08:00
spin_lock(&dev->rx_lock);
mt76: split mt76_rx_complete Add a separate function for processing frames after A-MPDU reordering, reduce code duplication Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-24 23:19:15 +08:00
while ((skb = __skb_dequeue(frames)) != NULL) {
mt76: validate rx CCMP PN Apparently hardware does not perform CCMP PN validation in hardware, so we need to take care of this in the driver. This is important for protecting against replay attacks. Since validation of fragmented frames is more complex, the CCMP header for those is preserved. To keep the counter in sync, the first fragment is verified by both mt76 and mac80211, and all other fragments only by mac80211. Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-25 18:44:24 +08:00
if (mt76_check_ccmp_pn(skb)) {
dev_kfree_skb(skb);
continue;
}
mt76: split mt76_rx_complete Add a separate function for processing frames after A-MPDU reordering, reduce code duplication Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-24 23:19:15 +08:00
sta = mt76_rx_convert(skb);
ieee80211_rx_napi(dev->hw, sta, skb, napi);
}
mt76: fix concurrent rx calls on A-MPDU release Add a spinlock in mt76_rx_complete. Without this, multiple stats updates could happen in parallel, which can lead to deadlocks. There are probably more corner cases fixed by this change. Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-04-25 17:11:21 +08:00
spin_unlock(&dev->rx_lock);
mt76: split mt76_rx_complete Add a separate function for processing frames after A-MPDU reordering, reduce code duplication Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-24 23:19:15 +08:00
}
mt76x2: add napi struct to mt76_rx_poll_complete/mt76_rx_complete signatures in order to reuse mt76_rx_complete routine supporting mt76x2u based devices add napi struct to mt76_rx_poll_complete and mt76_rx_complete routine signatures and do not fetch it according to the rx queue index Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-07-31 16:09:08 +08:00
void mt76_rx_poll_complete(struct mt76_dev *dev, enum mt76_rxq_id q,
struct napi_struct *napi)
mt76: split mt76_rx_complete Add a separate function for processing frames after A-MPDU reordering, reduce code duplication Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-24 23:19:15 +08:00
{
mt76: implement A-MPDU rx reordering in the driver code This is required for performing CCMP PN validation in software Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-24 23:19:14 +08:00
struct sk_buff_head frames;
mt76: add common code shared between multiple chipsets This will be used by drivers for MT76x2e, MT7603e and MT7628 Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-11-21 17:50:52 +08:00
struct sk_buff *skb;
mt76: implement A-MPDU rx reordering in the driver code This is required for performing CCMP PN validation in software Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-24 23:19:14 +08:00
__skb_queue_head_init(&frames);
mt76: implement AP_LINK_PS With software A-MPDU reordering in place, frames that notify mac80211 of powersave changes are reordered as well, which can cause connection stalls. Fix this by implementing powersave state processing in the driver. Fixes: aee5b8cf2477 ("mt76: implement A-MPDU rx reordering in the driver code") Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-27 23:02:03 +08:00
while ((skb = __skb_dequeue(&dev->rx_skb[q])) != NULL) {
mt76_check_ps(dev, skb);
mt76: implement A-MPDU rx reordering in the driver code This is required for performing CCMP PN validation in software Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-24 23:19:14 +08:00
mt76_rx_aggr_reorder(skb, &frames);
mt76: implement AP_LINK_PS With software A-MPDU reordering in place, frames that notify mac80211 of powersave changes are reordered as well, which can cause connection stalls. Fix this by implementing powersave state processing in the driver. Fixes: aee5b8cf2477 ("mt76: implement A-MPDU rx reordering in the driver code") Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-27 23:02:03 +08:00
}
mt76: implement A-MPDU rx reordering in the driver code This is required for performing CCMP PN validation in software Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-24 23:19:14 +08:00
mt76x2: add napi struct to mt76_rx_poll_complete/mt76_rx_complete signatures in order to reuse mt76_rx_complete routine supporting mt76x2u based devices add napi struct to mt76_rx_poll_complete and mt76_rx_complete routine signatures and do not fetch it according to the rx queue index Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-07-31 16:09:08 +08:00
mt76_rx_complete(dev, &frames, napi);
mt76: add common code shared between multiple chipsets This will be used by drivers for MT76x2e, MT7603e and MT7628 Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-11-21 17:50:52 +08:00
}
mt76x2: add napi struct to mt76_rx_poll_complete/mt76_rx_complete signatures in order to reuse mt76_rx_complete routine supporting mt76x2u based devices add napi struct to mt76_rx_poll_complete and mt76_rx_complete routine signatures and do not fetch it according to the rx queue index Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-07-31 16:09:08 +08:00
EXPORT_SYMBOL_GPL(mt76_rx_poll_complete);
mt76: add mt76_sta_remove helper This allows station removal code to be used by mt7603 later Signed-off-by: Felix Fietkau <nbd@nbd.name>
2018-11-13 18:33:46 +08:00
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 idx = wcid->idx;
int i;
rcu_assign_pointer(dev->wcid[idx], NULL);
synchronize_rcu();
mutex_lock(&dev->mutex);
mt76_tx_status_check(dev, wcid, true);
for (i = 0; i < ARRAY_SIZE(sta->txq); i++)
mt76_txq_remove(dev, sta->txq[i]);
mt76_wcid_free(dev->wcid_mask, idx);
mutex_unlock(&dev->mutex);
}
EXPORT_SYMBOL_GPL(mt76_sta_remove);