wifi: mac80211: check EHT basic MCS/NSS set

Check that all the NSS in the EHT basic MCS/NSS set
are actually supported, otherwise disable EHT for the
connection.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230618214436.737827c906c9.I0c11a3cd46ab4dcb774c11a5bbc30aecfb6fce11@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>

diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index 5fb8142cf08e6dd14d94281ceec790d81b9e7a7d..b685140c41ddf4bc4c7e91af988d4c32b4a2cbd9 100644 (file)
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -2014,12 +2014,18 @@ struct ieee80211_mu_edca_param_set {
  * @rx_tx_mcs13_max_nss: indicates the maximum number of spatial streams
  *     supported for reception and the maximum number of spatial streams
  *     supported for transmission for MCS 12 - 13.
+ * @rx_tx_max_nss: array of the previous fields for easier loop access
  */
 struct ieee80211_eht_mcs_nss_supp_20mhz_only {
-       u8 rx_tx_mcs7_max_nss;
-       u8 rx_tx_mcs9_max_nss;
-       u8 rx_tx_mcs11_max_nss;
-       u8 rx_tx_mcs13_max_nss;
+       union {
+               struct {
+                       u8 rx_tx_mcs7_max_nss;
+                       u8 rx_tx_mcs9_max_nss;
+                       u8 rx_tx_mcs11_max_nss;
+                       u8 rx_tx_mcs13_max_nss;
+               };
+               u8 rx_tx_max_nss[4];
+       };
 };
 
 /**
@@ -2039,11 +2045,17 @@ struct ieee80211_eht_mcs_nss_supp_20mhz_only {
  * @rx_tx_mcs13_max_nss: indicates the maximum number of spatial streams
  *     supported for reception and the maximum number of spatial streams
  *     supported for transmission for MCS 12 - 13.
+ * @rx_tx_max_nss: array of the previous fields for easier loop access
  */
 struct ieee80211_eht_mcs_nss_supp_bw {
-       u8 rx_tx_mcs9_max_nss;
-       u8 rx_tx_mcs11_max_nss;
-       u8 rx_tx_mcs13_max_nss;
+       union {
+               struct {
+                       u8 rx_tx_mcs9_max_nss;
+                       u8 rx_tx_mcs11_max_nss;
+                       u8 rx_tx_mcs13_max_nss;
+               };
+               u8 rx_tx_max_nss[3];
+       };
 };
 
 /**
@@ -2096,7 +2108,7 @@ struct ieee80211_eht_cap_elem {
  */
 struct ieee80211_eht_operation {
        u8 params;
-       __le32 basic_mcs_nss;
+       struct ieee80211_eht_mcs_nss_supp_20mhz_only basic_mcs_nss;
        u8 optional[];
 } __packed;