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Commit fd71f807 authored by Bartosz Markowski's avatar Bartosz Markowski Committed by Kalle Valo
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ath10k: AP: handle HT station which does not have HT RX MCS 



This is a workaround for HT-enabled STAs which break the spec
and have no HT capabilities RX mask (no HT RX MCS map).

As per spec, in section 20.3.5 Modulation and coding scheme (MCS),
MCS 0 through 7 are mandatory in 20MHz with 800 ns GI at all STAs.

Firmware asserts if such situation occurs.

Signed-off-by: default avatarBartosz Markowski <bartosz.markowski@tieto.com>
Signed-off-by: default avatarKalle Valo <kvalo@qca.qualcomm.com>
parent 00f5482b

drivers/net/wireless/ath/ath10k/mac.c

+17 −2
Original line number Diff line number Diff line
@@ -1148,8 +1148,23 @@ static void ath10k_peer_assoc_h_ht(struct ath10k *ar, 
		if (ht_cap->mcs.rx_mask[i/8] & (1 << i%8))

			arg->peer_ht_rates.rates[n++] = i;



	/*

	 * This is a workaround for HT-enabled STAs which break the spec

	 * and have no HT capabilities RX mask (no HT RX MCS map).

	 *

	 * As per spec, in section 20.3.5 Modulation and coding scheme (MCS),

	 * MCS 0 through 7 are mandatory in 20MHz with 800 ns GI at all STAs.

	 *

	 * Firmware asserts if such situation occurs.

	 */

	if (n == 0) {

		arg->peer_ht_rates.num_rates = 8;

		for (i = 0; i < arg->peer_ht_rates.num_rates; i++)

			arg->peer_ht_rates.rates[i] = i;

	} else {

		arg->peer_ht_rates.num_rates = n;

		arg->peer_num_spatial_streams = sta->rx_nss;

	}



	ath10k_dbg(ATH10K_DBG_MAC, "mac ht peer %pM mcs cnt %d nss %d\n",

		   arg->addr,