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Re: [PATCH 3/5] mt76: mt7921: report tx rate directly from tx status

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Lorenzo Bianconi <lorenzo@xxxxxxxxxx> writes:

> Report tx rate from tx status packets instead of receiving periodic mcu
> event. This improves flexibility, accuracy and AQL performance, and
> simplifies code flow for better readability.
>
> Signed-off-by: Lorenzo Bianconi <lorenzo@xxxxxxxxxx>

[...]

> +		/* We don't support reading GI info from txs packets.
> +		 * For accurate tx status reporting and AQL improvement,
> +		 * we need to make sure that flags match so polling GI
> +		 * from per-sta counters directly.
> +		 */
> +		rate = &msta->wcid.rate;
> +		addr = MT_WTBL_LMAC_OFFS(idx, 0) + 7 * 4;

Magic values.

> +		val = mt76_rr(dev, addr);
> +
> +		switch (rate->bw) {
> +		case RATE_INFO_BW_160:
> +			bw = IEEE80211_STA_RX_BW_160;
> +			break;
> +		case RATE_INFO_BW_80:
> +			bw = IEEE80211_STA_RX_BW_80;
> +			break;
> +		case RATE_INFO_BW_40:
> +			bw = IEEE80211_STA_RX_BW_40;
> +			break;
> +		default:
> +			bw = IEEE80211_STA_RX_BW_20;
> +			break;
> +		}
> +
> +		if (rate->flags & RATE_INFO_FLAGS_HE_MCS) {
> +			u8 offs = 24 + 2 * bw;
> +
> +			rate->he_gi = (val & (0x3 << offs)) >> offs;

Ditto.

-- 
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