diff options
| author | Bartosz Markowski <bartosz.markowski@tieto.com> | 2014-02-10 13:12:55 +0100 |
|---|---|---|
| committer | Kalle Valo <kvalo@qca.qualcomm.com> | 2014-02-13 17:46:06 +0200 |
| commit | fd71f807376437756bfab0ee21d5978a7b05a0f5 (patch) | |
| tree | 2e2394d47c59d47a405bd3c298cdfb58ce786183 /drivers/net/wireless/ath/ath10k | |
| parent | 00f5482bcd940c11b9b81e7c399fd5f4f6667bd0 (diff) | |
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: Bartosz Markowski <bartosz.markowski@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath10k')
| -rw-r--r-- | drivers/net/wireless/ath/ath10k/mac.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index b2c65904449..1c305b10e47 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -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; - arg->peer_ht_rates.num_rates = n; - arg->peer_num_spatial_streams = sta->rx_nss; + /* + * 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, |