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ath11k: calculate the correct NSS of peer for HE capabilities

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When connected to 6G mode AP, it does not have VHT/HT capabilities,
so the NSS is not set, then it is 1 by default.

This patch is to calculate the NSS with supported HE-MCS and NSS set
of HE capabilities.

Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-01280-QCAHSPSWPL_V1_V2_SILICONZ_LITE-1

Signed-off-by: Wen Gong <quic_wgong@quicinc.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20211118095453.8030-1-quic_wgong@quicinc.com
This commit is contained in:
Wen Gong 2021-11-22 13:13:57 +02:00 • committed by Kalle Valo
parent f8108250e3
commit 3db26ecf71
1 changed files with 36 additions and 1 deletions
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37
drivers/net/wireless/ath/ath11k/mac.c
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@ -1920,7 +1920,6 @@ static void ath11k_peer_assoc_h_he(struct ath11k *ar,
struct ath11k_vif *arvif = (void *)vif->drv_priv;
struct cfg80211_chan_def def;
const struct ieee80211_sta_he_cap *he_cap = &sta->he_cap;
u8 ampdu_factor;
enum nl80211_band band;
u16 *he_mcs_mask;
u8 max_nss, he_mcs;
@ -1928,6 +1927,9 @@ static void ath11k_peer_assoc_h_he(struct ath11k *ar,
int i, he_nss, nss_idx;
bool user_rate_valid = true;
u32 rx_nss, tx_nss, nss_160;
u8 ampdu_factor, rx_mcs_80, rx_mcs_160;
u16 mcs_160_map, mcs_80_map;
bool support_160;
if (WARN_ON(ath11k_mac_vif_chan(vif, &def)))
return;
@ -1942,6 +1944,39 @@ static void ath11k_peer_assoc_h_he(struct ath11k *ar,
return;
arg->he_flag = true;
support_160 = !!(he_cap->he_cap_elem.phy_cap_info[0] &
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G);
/* Supported HE-MCS and NSS Set of peer he_cap is intersection with self he_cp */
mcs_160_map = le16_to_cpu(he_cap->he_mcs_nss_supp.rx_mcs_160);
mcs_80_map = le16_to_cpu(he_cap->he_mcs_nss_supp.rx_mcs_80);
if (support_160) {
for (i = 7; i >= 0; i--) {
u8 mcs_160 = (mcs_160_map >> (2 * i)) & 3;
if (mcs_160 != IEEE80211_VHT_MCS_NOT_SUPPORTED) {
rx_mcs_160 = i + 1;
break;
}
}
}
for (i = 7; i >= 0; i--) {
u8 mcs_80 = (mcs_80_map >> (2 * i)) & 3;
if (mcs_80 != IEEE80211_VHT_MCS_NOT_SUPPORTED) {
rx_mcs_80 = i + 1;
break;
}
}
if (support_160)
max_nss = min(rx_mcs_80, rx_mcs_160);
else
max_nss = rx_mcs_80;
arg->peer_nss = min(sta->rx_nss, max_nss);
memcpy_and_pad(&arg->peer_he_cap_macinfo,
sizeof(arg->peer_he_cap_macinfo),