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wifi: mac80211: disallow drivers with HT wider than HE

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To simplify the code in the next patch, disallow drivers
supporting 40 MHz in HT but not HE, since we'd otherwise
have to track local maximum bandwidth per mode there.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Reviewed-by: Gregory Greenman <gregory.greenman@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240111181514.da15fe3214d2.I4df51ad2f4c844615c168bf9bdb498925b3c77d4@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2024-01-11 18:17:43 +02:00
parent 6593c7aec7
commit f04d2c247e
1 changed files with 18 additions and 0 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

18
net/mac80211/main.c
View file

@ -1119,8 +1119,26 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
supp_vht = supp_vht || sband->vht_cap.vht_supported;
for_each_sband_iftype_data(sband, i, iftd) {
u8 he_40_mhz_cap;
supp_he = supp_he || iftd->he_cap.has_he;
supp_eht = supp_eht || iftd->eht_cap.has_eht;
if (sband->band == NL80211_BAND_2GHZ)
he_40_mhz_cap =
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G;
else
he_40_mhz_cap =
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G;
/* currently no support for HE client where HT has 40 MHz but not HT */
if (iftd->he_cap.has_he &&
iftd->types_mask & (BIT(NL80211_IFTYPE_STATION) |
BIT(NL80211_IFTYPE_P2P_CLIENT)) &&
sband->ht_cap.ht_supported &&
sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 &&
!(iftd->he_cap.he_cap_elem.phy_cap_info[0] & he_40_mhz_cap))
return -EINVAL;
}
/* HT, VHT, HE require QoS, thus >= 4 queues */