diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2022-08-16 11:26:23 +0200 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2022-08-25 10:41:24 +0200 |
| commit | ea5cba269fb1fe22b84f4d01bb3d56320e6ffa3e (patch) | |
| tree | 3d904375046604957f92b627e15a4d90ff904f29 /net/wireless/core.c | |
| parent | 4992b36041f4263a9df8ee64259d2da6f6e4444a (diff) | |
wifi: cfg80211/mac80211: check EHT capability size correctly
For AP/non-AP the EHT MCS/NSS subfield size differs, the
4-octet subfield is only used for 20 MHz-only non-AP STA.
Pass an argument around everywhere to be able to parse it
properly.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless/core.c')
| -rw-r--r-- | net/wireless/core.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/net/wireless/core.c b/net/wireless/core.c index eefd6d8ff465..5b0c4d5b80cf 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -860,6 +860,9 @@ int wiphy_register(struct wiphy *wiphy) for (i = 0; i < sband->n_iftype_data; i++) { const struct ieee80211_sband_iftype_data *iftd; + bool has_ap, has_non_ap; + u32 ap_bits = BIT(NL80211_IFTYPE_AP) | + BIT(NL80211_IFTYPE_P2P_GO); iftd = &sband->iftype_data[i]; @@ -879,6 +882,19 @@ int wiphy_register(struct wiphy *wiphy) else have_he = have_he && iftd->he_cap.has_he; + + has_ap = iftd->types_mask & ap_bits; + has_non_ap = iftd->types_mask & ~ap_bits; + + /* + * For EHT 20 MHz STA, the capabilities format differs + * but to simplify, don't check 20 MHz but rather check + * only if AP and non-AP were mentioned at the same time, + * reject if so. + */ + if (WARN_ON(iftd->eht_cap.has_eht && + has_ap && has_non_ap)) + return -EINVAL; } if (WARN_ON(!have_he && band == NL80211_BAND_6GHZ)) |