Remove PSMP option from ht_capab

This was used to fill in the "PSMP support" subfield that was defined
during P802.11n development. However, this subfield was marked reserved
in the published IEEE Std 802.11n-2009 and it is not supported by
current drivers that use hostapd for SME either. As such, there is not
much point in maintaining this field as ht_capab parameter within
hostapd either.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>

hostapd/config_file.c

@@ -1069,8 +1069,6 @@ static int hostapd_config_ht_capab(struct hostapd_config *conf,
 		conf->ht_capab |= HT_CAP_INFO_MAX_AMSDU_SIZE;
 	if (os_strstr(capab, "[DSSS_CCK-40]"))
 		conf->ht_capab |= HT_CAP_INFO_DSSS_CCK40MHZ;
-	if (os_strstr(capab, "[PSMP]"))
-		conf->ht_capab |= HT_CAP_INFO_PSMP_SUPP;
 	if (os_strstr(capab, "[40-INTOLERANT]"))
 		conf->ht_capab |= HT_CAP_INFO_40MHZ_INTOLERANT;
 	if (os_strstr(capab, "[LSIG-TXOP-PROT]"))

hostapd/hostapd.conf

@@ -480,7 +480,6 @@ wmm_ac_vo_acm=0
 # Maximum A-MSDU length: [MAX-AMSDU-7935] for 7935 octets (3839 octets if not
 #	set)
 # DSSS/CCK Mode in 40 MHz: [DSSS_CCK-40] = allowed (not allowed if not set)
-# PSMP support: [PSMP] (disabled if not set)
 # 40 MHz intolerant [40-INTOLERANT] (not advertised if not set)
 # L-SIG TXOP protection support: [LSIG-TXOP-PROT] (disabled if not set)
 #ht_capab=[HT40-][SHORT-GI-20][SHORT-GI-40]

src/ap/hw_features.c

@@ -679,12 +679,6 @@ static int ieee80211n_supported_ht_capab(struct hostapd_iface *iface)
 		return 0;
 	}
 
-	if ((conf & HT_CAP_INFO_PSMP_SUPP) && !(hw & HT_CAP_INFO_PSMP_SUPP)) {
-		wpa_printf(MSG_ERROR, "Driver does not support configured "
-			   "HT capability [PSMP]");
-		return 0;
-	}
-
 	if ((conf & HT_CAP_INFO_LSIG_TXOP_PROTECT_SUPPORT) &&
 	    !(hw & HT_CAP_INFO_LSIG_TXOP_PROTECT_SUPPORT)) {
 		wpa_printf(MSG_ERROR, "Driver does not support configured "

src/common/ieee802_11_defs.h

@@ -658,7 +658,7 @@ struct ieee80211_vht_operation {
 #define HT_CAP_INFO_DELAYED_BA			((u16) BIT(10))
 #define HT_CAP_INFO_MAX_AMSDU_SIZE		((u16) BIT(11))
 #define HT_CAP_INFO_DSSS_CCK40MHZ		((u16) BIT(12))
-#define HT_CAP_INFO_PSMP_SUPP			((u16) BIT(13))
+/* B13 - Reserved (was PSMP support during P802.11n development) */
 #define HT_CAP_INFO_40MHZ_INTOLERANT		((u16) BIT(14))
 #define HT_CAP_INFO_LSIG_TXOP_PROTECT_SUPPORT	((u16) BIT(15))