From e6ed929b4140d293bf8523f0376ed9bbdce29c47 Mon Sep 17 00:00:00 2001 From: Wen Gong Date: Sun, 23 May 2021 23:36:24 -0400 Subject: wireless: add check of field VHT Extended NSS BW Capable for 160/80+80 MHz setting MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Table 9-251—Supported VHT-MCS and NSS Set subfields, it has subfield VHT Extended NSS BW Capable, its definition is: Indicates whether the STA is capable of interpreting the Extended NSS BW Support subfield of the VHT Capabilities Information field. This patch is to add check for the subfield. Signed-off-by: Wen Gong Link: https://lore.kernel.org/r/20210524033624.16993-1-wgong@codeaurora.org Signed-off-by: Johannes Berg --- net/wireless/chan.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) (limited to 'net/wireless/chan.c') diff --git a/net/wireless/chan.c b/net/wireless/chan.c index 285b8076054b..472c895823a4 100644 --- a/net/wireless/chan.c +++ b/net/wireless/chan.c @@ -942,7 +942,7 @@ bool cfg80211_chandef_usable(struct wiphy *wiphy, struct ieee80211_sta_vht_cap *vht_cap; struct ieee80211_edmg *edmg_cap; u32 width, control_freq, cap; - bool support_80_80 = false; + bool ext_nss_cap, support_80_80 = false; if (WARN_ON(!cfg80211_chandef_valid(chandef))) return false; @@ -950,6 +950,8 @@ bool cfg80211_chandef_usable(struct wiphy *wiphy, ht_cap = &wiphy->bands[chandef->chan->band]->ht_cap; vht_cap = &wiphy->bands[chandef->chan->band]->vht_cap; edmg_cap = &wiphy->bands[chandef->chan->band]->edmg_cap; + ext_nss_cap = __le16_to_cpu(vht_cap->vht_mcs.tx_highest) & + IEEE80211_VHT_EXT_NSS_BW_CAPABLE; if (edmg_cap->channels && !cfg80211_edmg_usable(wiphy, @@ -1015,7 +1017,8 @@ bool cfg80211_chandef_usable(struct wiphy *wiphy, (cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ) || (cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ && cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) || - u32_get_bits(cap, IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) > 1; + (ext_nss_cap && + u32_get_bits(cap, IEEE80211_VHT_CAP_EXT_NSS_BW_MASK) > 1); if (chandef->chan->band != NL80211_BAND_6GHZ && !support_80_80) return false; fallthrough; @@ -1037,7 +1040,8 @@ bool cfg80211_chandef_usable(struct wiphy *wiphy, cap = vht_cap->cap & IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK; if (cap != IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ && cap != IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ && - !(vht_cap->cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK)) + !(ext_nss_cap && + (vht_cap->cap & IEEE80211_VHT_CAP_EXT_NSS_BW_MASK))) return false; break; default: -- cgit