> From: Ben Greear <greearb@xxxxxxxxxxxxxxx>
>
> When enabled, this allows per-skb rx rate reporting.
> Enabling this may degrade RX performance, so it remains
> disabled by default.
>
> Signed-off-by: Ben Greear <greearb@xxxxxxxxxxxxxxx>
> ---
> .../wireless/mediatek/mt76/mt7915/debugfs.c | 33 +++++++++++++++++++
> .../net/wireless/mediatek/mt76/mt7915/init.c | 3 +-
> .../net/wireless/mediatek/mt76/mt7915/mac.c | 3 +-
> .../net/wireless/mediatek/mt76/mt7915/main.c | 3 +-
> .../wireless/mediatek/mt76/mt7915/mt7915.h | 5 +++
> 5 files changed, 44 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c b/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c
> index e3f6cd18e30a..32e219a20721 100644
> --- a/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c
> +++ b/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c
> @@ -435,6 +435,38 @@ mt7915_txs_for_no_skb_get(void *data, u64 *val)
> DEFINE_DEBUGFS_ATTRIBUTE(fops_txs_for_no_skb, mt7915_txs_for_no_skb_get,
> mt7915_txs_for_no_skb_set, "%lld\n");
>
> +static int
> +mt7915_rx_group_5_enable_set(void *data, u64 val)
> +{
> + struct mt7915_dev *dev = data;
> +
> + mutex_lock(&dev->mt76.mutex);
> +
> + dev->rx_group_5_enable = !!val;
I think this should be added in mt7915_phy instead of in mt7915_dev since
we have MT_DMA_DCR0() for each band.
> +
> + /* Enabled if we requested enabled OR if monitor mode is enabled. */
> + mt76_rmw_field(dev, MT_DMA_DCR0(0), MT_DMA_DCR0_RXD_G5_EN,
> + dev->phy.is_monitor_mode || dev->rx_group_5_enable);
I think we do not need dev->phy.is_monitor_mode, we can check if monitor is
enabled looking at hw->conf.flag.
> + mt76_testmode_reset(dev->phy.mt76, true);
> +
> + mutex_unlock(&dev->mt76.mutex);
> +
> + return 0;
> +}
> +
> +static int
> +mt7915_rx_group_5_enable_get(void *data, u64 *val)
> +{
> + struct mt7915_dev *dev = data;
> +
> + *val = dev->rx_group_5_enable;
> +
> + return 0;
> +}
> +
> +DEFINE_DEBUGFS_ATTRIBUTE(fops_rx_group_5_enable, mt7915_rx_group_5_enable_get,
> + mt7915_rx_group_5_enable_set, "%lld\n");
> +
> static void
> mt7915_ampdu_stat_read_phy(struct mt7915_phy *phy,
> struct seq_file *file)
> @@ -786,6 +818,7 @@ int mt7915_init_debugfs(struct mt7915_phy *phy)
> debugfs_create_file("fw_util_wa", 0400, dir, dev,
> &mt7915_fw_util_wa_fops);
> debugfs_create_file("force_txs", 0600, dir, dev, &fops_txs_for_no_skb);
> + debugfs_create_file("rx_group_5_enable", 0600, dir, dev, &fops_rx_group_5_enable);
> debugfs_create_file("implicit_txbf", 0600, dir, dev,
> &fops_implicit_txbf);
> debugfs_create_file("txpower_sku", 0400, dir, phy,
> diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/init.c b/drivers/net/wireless/mediatek/mt76/mt7915/init.c
> index 90aa62c64f3e..58a0ce72b714 100644
> --- a/drivers/net/wireless/mediatek/mt76/mt7915/init.c
> +++ b/drivers/net/wireless/mediatek/mt76/mt7915/init.c
> @@ -391,7 +391,8 @@ mt7915_mac_init_band(struct mt7915_dev *dev, u8 band)
>
> mt76_rmw_field(dev, MT_DMA_DCR0(band), MT_DMA_DCR0_MAX_RX_LEN, 0x680);
> /* disable rx rate report by default due to hw issues */
> - mt76_clear(dev, MT_DMA_DCR0(band), MT_DMA_DCR0_RXD_G5_EN);
> + mt76_rmw_field(dev, MT_DMA_DCR0(band), MT_DMA_DCR0_RXD_G5_EN,
> + dev->phy.is_monitor_mode || dev->rx_group_5_enable);
> }
>
> static void mt7915_mac_init(struct mt7915_dev *dev)
> diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
> index 6fbd58ae9c88..a6bcc76dcb03 100644
> --- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
> +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
> @@ -715,7 +715,8 @@ mt7915_mac_fill_rx(struct mt7915_dev *dev, struct sk_buff *skb)
> status->flag |= RX_FLAG_8023;
> }
>
> - if (rxv && status->flag & RX_FLAG_RADIOTAP_HE) {
> + if (phy->is_monitor_mode &&
> + rxv && status->flag & RX_FLAG_RADIOTAP_HE) {
> mt7915_mac_decode_he_radiotap(skb, status, rxv, mode);
> if (status->flag & RX_FLAG_RADIOTAP_HE_MU)
> mt7915_mac_decode_he_mu_radiotap(skb, status, rxv);
> diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/main.c b/drivers/net/wireless/mediatek/mt76/mt7915/main.c
> index 3d702dc899ba..e973b2527b34 100644
> --- a/drivers/net/wireless/mediatek/mt76/mt7915/main.c
> +++ b/drivers/net/wireless/mediatek/mt76/mt7915/main.c
> @@ -458,13 +458,14 @@ static int mt7915_config(struct ieee80211_hw *hw, u32 changed)
> if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
> bool enabled = !!(hw->conf.flags & IEEE80211_CONF_MONITOR);
>
> + phy->is_monitor_mode = enabled;
> if (!enabled)
> phy->rxfilter |= MT_WF_RFCR_DROP_OTHER_UC;
> else
> phy->rxfilter &= ~MT_WF_RFCR_DROP_OTHER_UC;
>
> mt76_rmw_field(dev, MT_DMA_DCR0(band), MT_DMA_DCR0_RXD_G5_EN,
> - enabled);
> + phy->is_monitor_mode || dev->rx_group_5_enable);
> mt76_testmode_reset(phy->mt76, true);
> mt76_wr(dev, MT_WF_RFCR(band), phy->rxfilter);
> }
> diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
> index 86cd0fc8e9de..84fff60ada92 100644
> --- a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
> +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
> @@ -209,6 +209,7 @@ struct mt7915_phy {
> struct thermal_cooling_device *cdev;
> u8 throttle_state;
> u32 throttle_temp[2]; /* 0: critical high, 1: maximum */
> + u8 is_monitor_mode; /* are we in monitor mode or not ? */
not needed
>
> u32 rxfilter;
> u64 omac_mask;
> @@ -261,6 +262,10 @@ struct mt7915_dev {
> * creation by firmware, so may be a performance drag.
> */
> bool txs_for_no_skb_enabled;
> + /* Should we enable group-5 rx descriptor logic? This may decrease RX
> + * throughput, but will give per skb rx rate information..
> + */
> + bool rx_group_5_enable;
move it in mt7915_phy
>
> struct work_struct init_work;
> struct work_struct rc_work;
> --
> 2.20.1
>
Regards,
Lorenzo
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