hostapd: Initial IEEE 802.11ac (VHT) definitions

Add IEEE 802.11ac definitions for config, IEEE structures, constants.

Signed-hostap: Mahesh Palivela <maheshp@posedge.com>

hostapd/Makefile

@@ -173,6 +173,10 @@ ifdef CONFIG_WNM
 CFLAGS += -DCONFIG_WNM
 endif
 
+ifdef CONFIG_IEEE80211AC
+CFLAGS += -DCONFIG_IEEE80211AC
+endif
+
 include ../src/drivers/drivers.mak
 OBJS += $(DRV_AP_OBJS)
 CFLAGS += $(DRV_AP_CFLAGS)

hostapd/config_file.c

@@ -1132,6 +1132,71 @@ static int hostapd_config_ht_capab(struct hostapd_config *conf,
 #endif /* CONFIG_IEEE80211N */
 
 
+#ifdef CONFIG_IEEE80211AC
+static int hostapd_config_vht_capab(struct hostapd_config *conf,
+				    const char *capab)
+{
+	if (os_strstr(capab, "[MAX-MPDU-7991]"))
+		conf->vht_capab |= VHT_CAP_MAX_MPDU_LENGTH_7991;
+	if (os_strstr(capab, "[MAX-MPDU-11454]"))
+		conf->vht_capab |= VHT_CAP_MAX_MPDU_LENGTH_11454;
+	if (os_strstr(capab, "[VHT160]"))
+		conf->vht_capab |= VHT_CAP_SUPP_CHAN_WIDTH_160MHZ;
+	if (os_strstr(capab, "[VHT160-80PLUS80]"))
+		conf->vht_capab |= VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ;
+	if (os_strstr(capab, "[VHT160-80PLUS80]"))
+		conf->vht_capab |= VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ;
+	if (os_strstr(capab, "[RXLDPC]"))
+		conf->vht_capab |= VHT_CAP_RXLDPC;
+	if (os_strstr(capab, "[SHORT-GI-80]"))
+		conf->vht_capab |= VHT_CAP_SHORT_GI_80;
+	if (os_strstr(capab, "[SHORT-GI-160]"))
+		conf->vht_capab |= VHT_CAP_SHORT_GI_160;
+	if (os_strstr(capab, "[TX-STBC-2BY1]"))
+		conf->vht_capab |= VHT_CAP_TXSTBC;
+	if (os_strstr(capab, "[RX-STBC-1]"))
+		conf->vht_capab |= VHT_CAP_RXSTBC_1;
+	if (os_strstr(capab, "[RX-STBC-12]"))
+		conf->vht_capab |= VHT_CAP_RXSTBC_2;
+	if (os_strstr(capab, "[RX-STBC-123]"))
+		conf->vht_capab |= VHT_CAP_RXSTBC_3;
+	if (os_strstr(capab, "[RX-STBC-1234]"))
+		conf->vht_capab |= VHT_CAP_RXSTBC_4;
+	if (os_strstr(capab, "[SU-BEAMFORMER]"))
+		conf->vht_capab |= VHT_CAP_MU_BEAMFORMER_CAPABLE;
+	if (os_strstr(capab, "[SU-BEAMFORMEE]"))
+		conf->vht_capab |= VHT_CAP_MU_BEAMFORMEE_CAPABLE;
+	if (os_strstr(capab, "[BF-ANTENNA-2]") &&
+	    (conf->vht_capab & VHT_CAP_MU_BEAMFORMER_CAPABLE))
+		conf->vht_capab |= VHT_CAP_BEAMFORMER_ANTENNAS_MAX;
+	if (os_strstr(capab, "[SOUNDING-DIMENSION-2]") &&
+	    (conf->vht_capab & VHT_CAP_MU_BEAMFORMER_CAPABLE))
+		conf->vht_capab |= VHT_CAP_SOUNDING_DIMENTION_MAX;
+	if (os_strstr(capab, "[MU-BEAMFORMER]"))
+		conf->vht_capab |= VHT_CAP_MU_BEAMFORMER_CAPABLE;
+	if (os_strstr(capab, "[MU-BEAMFORMEE]"))
+		conf->vht_capab |= VHT_CAP_MU_BEAMFORMEE_CAPABLE;
+	if (os_strstr(capab, "[VHT-TXOP-PS]"))
+		conf->vht_capab |= VHT_CAP_VHT_TXOP_PS;
+	if (os_strstr(capab, "[HTC-VHT]"))
+		conf->vht_capab |= VHT_CAP_HTC_VHT;
+	if (os_strstr(capab, "[MAX-A-MPDU-LEN-EXP0]"))
+		conf->vht_capab |= VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT;
+	if (os_strstr(capab, "[VHT-LINK-ADAPT2]") &&
+	    (conf->vht_capab & VHT_CAP_HTC_VHT))
+		conf->vht_capab |= VHT_CAP_VHT_LINK_ADAPTATION_VHT_UNSOL_MFB;
+	if (os_strstr(capab, "[VHT-LINK-ADAPT3]") &&
+	    (conf->vht_capab & VHT_CAP_HTC_VHT))
+		conf->vht_capab |= VHT_CAP_VHT_LINK_ADAPTATION_VHT_MRQ_MFB;
+	if (os_strstr(capab, "[RX-ANTENNA-PATTERN]"))
+		conf->vht_capab |= VHT_CAP_RX_ANTENNA_PATTERN;
+	if (os_strstr(capab, "[TX-ANTENNA-PATTERN]"))
+		conf->vht_capab |= VHT_CAP_TX_ANTENNA_PATTERN;
+	return 0;
+}
+#endif /* CONFIG_IEEE80211AC */
+
+
 static int hostapd_config_check_bss(struct hostapd_bss_config *bss,
 				    struct hostapd_config *conf)
 {
@@ -2126,6 +2191,18 @@ static int hostapd_config_fill(struct hostapd_config *conf,
 		} else if (os_strcmp(buf, "require_ht") == 0) {
 			conf->require_ht = atoi(pos);
 #endif /* CONFIG_IEEE80211N */
+#ifdef CONFIG_IEEE80211AC
+		} else if (os_strcmp(buf, "ieee80211ac") == 0) {
+			conf->ieee80211ac = atoi(pos);
+		} else if (os_strcmp(buf, "vht_capab") == 0) {
+			if (hostapd_config_vht_capab(conf, pos) < 0) {
+				wpa_printf(MSG_ERROR, "Line %d: invalid "
+					   "vht_capab", line);
+				errors++;
+			}
+		} else if (os_strcmp(buf, "vht_oper_chwidth") == 0) {
+		    conf->vht_oper_chwidth = atoi(pos);
+#endif /* CONFIG_IEEE80211AC */
 		} else if (os_strcmp(buf, "max_listen_interval") == 0) {
 			bss->max_listen_interval = atoi(pos);
 		} else if (os_strcmp(buf, "disable_pmksa_caching") == 0) {

hostapd/defconfig

@@ -142,6 +142,9 @@ CONFIG_IPV6=y
 # Note: This is experimental and not complete implementation.
 #CONFIG_WNM=y
 
+# IEEE 802.11ac (Very High Throughput) support
+#CONFIG_IEEE80211AC=y
+
 # Remove debugging code that is printing out debug messages to stdout.
 # This can be used to reduce the size of the hostapd considerably if debugging
 # code is not needed.

hostapd/hostapd.conf

@@ -416,6 +416,137 @@ wmm_ac_vo_acm=0
 # Require stations to support HT PHY (reject association if they do not)
 #require_ht=1
 
+##### IEEE 802.11ac related configuration #####################################
+
+# ieee80211ac: Whether IEEE 802.11ac (VHT) is enabled
+# 0 = disabled (default)
+# 1 = enabled
+# Note: You will also need to enable WMM for full VHT functionality.
+#ieee80211ac=1
+
+# vht_capab: VHT capabilities (list of flags)
+#
+# vht_max_mpdu_len: [MAX-MPDU-7991] [MAX-MPDU-11454]
+# Indicates maximum MPDU length
+# 0 = 3895 octets (default)
+# 1 = 7991 octets
+# 2 = 11454 octets
+# 3 = reserved
+#
+# supported_chan_width: [VHT160] [VHT160-80PLUS80]
+# Indicates supported Channel widths
+# 0 = 160 MHz & 80+80 channel widths are not supported (default)
+# 1 = 160 MHz channel width is supported
+# 2 = 160 MHz & 80+80 channel widths are supported
+# 3 = reserved
+#
+# Rx LDPC coding capability: [RXLDPC]
+# Indicates support for receiving LDPC coded pkts
+# 0 = Not supported (default)
+# 1 = Supported
+#
+# Short GI for 80 MHz: [SHORT-GI-80]
+# Indicates short GI support for reception of packets transmitted with TXVECTOR
+# params format equal to VHT and CBW = 80Mhz
+# 0 = Not supported (default)
+# 1 = Supported
+#
+# Short GI for 160 MHz: [SHORT-GI-160]
+# Indicates short GI support for reception of packets transmitted with TXVECTOR
+# params format equal to VHT and CBW = 160Mhz
+# 0 = Not supported (default)
+# 1 = Supported
+#
+# Tx STBC: [TX-STBC-2BY1]
+# Indicates support for the transmission of at least 2x1 STBC
+# 0 = Not supported (default)
+# 1 = Supported
+#
+# Rx STBC: [RX-STBC-1] [RX-STBC-12] [RX-STBC-123] [RX-STBC-1234]
+# Indicates support for the reception of PPDUs using STBC
+# 0 = Not supported (default)
+# 1 = support of one spatial stream
+# 2 = support of one and two spatial streams
+# 3 = support of one, two and three spatial streams
+# 4 = support of one, two, three and four spatial streams
+# 5,6,7 = reserved
+#
+# SU Beamformer Capable: [SU-BEAMFORMER]
+# Indicates support for operation as a single user beamformer
+# 0 = Not supported (default)
+# 1 = Supported
+#
+# SU Beamformee Capable: [SU-BEAMFORMEE]
+# Indicates support for operation as a single user beamformee
+# 0 = Not supported (default)
+# 1 = Supported
+#
+# Compressed Steering Number of Beamformer Antennas Supported: [BF-ANTENNA-2]
+#   Beamformee's capability indicating the maximum number of beamformer
+#   antennas the beamformee can support when sending compressed beamforming
+#   feedback
+# If SU beamformer capable, set to maximum value minus 1
+# else reserved (default)
+#
+# Number of Sounding Dimensions: [SOUNDING-DIMENSION-2]
+# Beamformer’s capability indicating the maximum value of the NUM_STS parameter
+# in the TXVECTOR of a VHT NDP
+# If SU beamformer capable, set to maximum value minus 1
+# else reserved (default)
+#
+# MU Beamformer Capable: [MU-BEAMFORMER]
+# Indicates support for operation as an MU beamformer
+# 0 = Not supported or sent by Non-AP STA (default)
+# 1 = Supported
+#
+# MU Beamformee Capable: [MU-BEAMFORMEE]
+# Indicates support for operation as an MU beamformee
+# 0 = Not supported or sent by AP (default)
+# 1 = Supported
+#
+# VHT TXOP PS: [VHT-TXOP-PS]
+# Indicates whether or not the AP supports VHT TXOP Power Save Mode
+#  or whether or not the STA is in VHT TXOP Power Save mode
+# 0 = VHT AP doesnt support VHT TXOP PS mode (OR) VHT Sta not in VHT TXOP PS
+#  mode
+# 1 = VHT AP supports VHT TXOP PS mode (OR) VHT Sta is in VHT TXOP power save
+#  mode
+#
+# +HTC-VHT Capable: [HTC-VHT]
+# Indicates whether or not the STA supports receiving a VHT variant HT Control
+# field.
+# 0 = Not supported (default)
+# 1 = supported
+#
+# Maximum A-MPDU Length Exponent: [MAX-A-MPDU-LEN-EXP0]..[MAX-A-MPDU-LEN-EXP7]
+# Indicates the maximum length of A-MPDU pre-EOF padding that the STA can recv
+# This field is an integer in the range of 0 to 7.
+# The length defined by this field is equal to
+# 2 pow(13 + Maximum A-MPDU Length Exponent) –1 octets
+#
+# VHT Link Adaptation Capable: [VHT-LINK-ADAPT2] [VHT-LINK-ADAPT3]
+# Indicates whether or not the STA supports link adaptation using VHT variant
+# HT Control field
+# If +HTC-VHTcapable is 1
+#  0 = (no feedback) if the STA does not provide VHT MFB (default)
+#  1 = reserved
+#  2 = (Unsolicited) if the STA provides only unsolicited VHT MFB
+#  3 = (Both) if the STA can provide VHT MFB in response to VHT MRQ and if the
+#      STA provides unsolicited VHT MFB
+# Reserved if +HTC-VHTcapable is 0
+#
+# Rx Antenna Pattern Consistency: [RX-ANTENNA-PATTERN]
+# Indicates the possibility of Rx antenna pattern change
+# 0 = Rx antenna pattern might change during the lifetime of an association
+# 1 = Rx antenna pattern does not change during the lifetime of an association
+#
+# Tx Antenna Pattern Consistency: [TX-ANTENNA-PATTERN]
+# Indicates the possibility of Tx antenna pattern change
+# 0 = Tx antenna pattern might change during the lifetime of an association
+# 1 = Tx antenna pattern does not change during the lifetime of an association
+#vht_capab=[SHORT-GI-80][HTC-VHT]
+#vht_oper_chwidth=1
+
 ##### IEEE 802.1X-2004 related configuration ##################################
 
 # Require IEEE 802.1X authorization

src/ap/ap_config.h

@@ -365,6 +365,7 @@ struct hostapd_bss_config {
 #define TDLS_PROHIBIT_CHAN_SWITCH BIT(1)
 	int tdls;
 	int disable_11n;
+	int disable_11ac;
 
 	/* IEEE 802.11v */
 	int time_advertisement;
@@ -452,6 +453,9 @@ struct hostapd_config {
 	int ieee80211n;
 	int secondary_channel;
 	int require_ht;
+	u32 vht_capab;
+	int ieee80211ac;
+	u8 vht_oper_chwidth;
 };
 
 

src/common/ieee802_11_defs.h

@@ -238,6 +238,15 @@
 #define WLAN_EID_ADV_PROTO 108
 #define WLAN_EID_ROAMING_CONSORTIUM 111
 #define WLAN_EID_EXT_CAPAB 127
+#define WLAN_EID_VHT_CAP 191
+#define WLAN_EID_VHT_OPERATION 192
+#define WLAN_EID_VHT_EXTENDED_BSS_LOAD 193
+#define WLAN_EID_VHT_WIDE_BW_CHSWITCH  194
+#define WLAN_EID_VHT_TRANSMIT_POWER_ENVELOPE 195
+#define WLAN_EID_VHT_CHANNEL_SWITCH_WRAPPER 196
+#define WLAN_EID_VHT_AID 197
+#define WLAN_EID_VHT_QUIET_CHANNEL 198
+#define WLAN_EID_VHT_OPERATING_MODE_NOTIFICATION 199
 #define WLAN_EID_VENDOR_SPECIFIC 221
 
 
@@ -550,6 +559,19 @@ struct ieee80211_ht_operation {
 	u8 basic_set[16];
 } STRUCT_PACKED;
 
+
+struct ieee80211_vht_capabilities {
+	le32 vht_capabilities_info;
+	u8 vht_supported_mcs_set[8];
+} STRUCT_PACKED;
+
+struct ieee80211_vht_operation {
+	u8 vht_op_info_chwidth;
+	u8 vht_op_info_chan_center_freq_seg0_idx;
+	u8 vht_op_info_chan_center_freq_seg1_idx;
+	le16 vht_basic_mcs_set;
+} STRUCT_PACKED;
+
 #ifdef _MSC_VER
 #pragma pack(pop)
 #endif /* _MSC_VER */
@@ -646,6 +668,33 @@ struct ieee80211_ht_operation {
 
 #define BSS_MEMBERSHIP_SELECTOR_HT_PHY 127
 
+/* VHT Defines */
+#define VHT_CAP_MAX_MPDU_LENGTH_7991                ((u32) BIT(0))
+#define VHT_CAP_MAX_MPDU_LENGTH_11454               ((u32) BIT(1))
+#define VHT_CAP_SUPP_CHAN_WIDTH_160MHZ              ((u32) BIT(2))
+#define VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ     ((u32) BIT(3))
+#define VHT_CAP_RXLDPC                              ((u32) BIT(4))
+#define VHT_CAP_SHORT_GI_80                         ((u32) BIT(5))
+#define VHT_CAP_SHORT_GI_160                        ((u32) BIT(6))
+#define VHT_CAP_TXSTBC                              ((u32) BIT(7))
+#define VHT_CAP_RXSTBC_1                            ((u32) BIT(8))
+#define VHT_CAP_RXSTBC_2                            ((u32) BIT(9))
+#define VHT_CAP_RXSTBC_3                            ((u32) BIT(8) | BIT(9))
+#define VHT_CAP_RXSTBC_4                            ((u32) BIT(10))
+#define VHT_CAP_SU_BEAMFORMER_CAPABLE               ((u32) BIT(11))
+#define VHT_CAP_SU_BEAMFORMEE_CAPABLE               ((u32) BIT(12))
+#define VHT_CAP_BEAMFORMER_ANTENNAS_MAX             ((u32) BIT(13) | BIT(14))
+#define VHT_CAP_SOUNDING_DIMENTION_MAX              ((u32) BIT(16) | BIT(17))
+#define VHT_CAP_MU_BEAMFORMER_CAPABLE               ((u32) BIT(19))
+#define VHT_CAP_MU_BEAMFORMEE_CAPABLE               ((u32) BIT(20))
+#define VHT_CAP_VHT_TXOP_PS                         ((u32) BIT(21))
+#define VHT_CAP_HTC_VHT                             ((u32) BIT(22))
+#define VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT          ((u32) BIT(23))
+#define VHT_CAP_VHT_LINK_ADAPTATION_VHT_UNSOL_MFB   ((u32) BIT(27))
+#define VHT_CAP_VHT_LINK_ADAPTATION_VHT_MRQ_MFB     ((u32) BIT(26) | BIT(27))
+#define VHT_CAP_RX_ANTENNA_PATTERN                  ((u32) BIT(28))
+#define VHT_CAP_TX_ANTENNA_PATTERN                  ((u32) BIT(29))
+
 #define OUI_MICROSOFT 0x0050f2 /* Microsoft (also used in Wi-Fi specs)
 				* 00:50:F2 */
 #define WPA_IE_VENDOR_TYPE 0x0050f201

src/drivers/driver.h

@@ -100,6 +100,16 @@ struct hostapd_hw_modes {
 	 */
 	u8 a_mpdu_params;
 
+	/**
+	 * vht_capab - VHT (IEEE 802.11ac) capabilities
+	 */
+	u32 vht_capab;
+
+	/**
+	 * vht_mcs_set - VHT MCS (IEEE 802.11ac) rate parameters
+	 */
+	u8 vht_mcs_set[8];
+
 	unsigned int flags; /* HOSTAPD_MODE_FLAG_* */
 };