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Added support for configuring secondary channel offset for HT40

This commit is contained in:
Jouni Malinen 2008-11-24 16:33:45 +02:00 committed by Jouni Malinen
parent a86f6ccad7
commit a8d8410e1f
5 changed files with 21 additions and 9 deletions
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8
hostapd/config.c
View File

@ -1315,8 +1315,14 @@ static int hostapd_config_ht_capab(struct hostapd_config *conf,
{
if (os_strstr(capab, "[LDPC]"))
conf->ht_capab |= HT_CAP_INFO_LDPC_CODING_CAP;
if (os_strstr(capab, "[HT40]"))
if (os_strstr(capab, "[HT40-]")) {
conf->ht_capab |= HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET;
conf->secondary_channel = -1;
}
if (os_strstr(capab, "[HT40+]")) {
conf->ht_capab |= HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET;
conf->secondary_channel = 1;
}
if (os_strstr(capab, "[SMPS-STATIC]")) {
conf->ht_capab &= ~HT_CAP_INFO_SMPS_MASK;
conf->ht_capab |= HT_CAP_INFO_SMPS_STATIC;

1
hostapd/config.h
View File

@ -378,6 +378,7 @@ struct hostapd_config {
int ieee80211n;
int ht_op_mode_fixed;
u16 ht_capab;
int secondary_channel;
#endif /* CONFIG_IEEE80211N */
};

8
hostapd/hostapd.conf
View File

@ -380,8 +380,10 @@ wme_ac_vo_acm=0
# ht_capab: HT capabilities (list of flags)
# LDPC coding capability: [LDPC] = supported
# Supported channel width set: [HT40] = both 20 MHz and 40 MHz
# (20 MHz only if not set)
# Supported channel width set: [HT40-] = both 20 MHz and 40 MHz with secondary
# channel below the primary channel; [HT40+] = both 20 MHz and 40 MHz
# with secondary channel below the primary channel
# (20 MHz only if neither is set)
# Spatial Multiplexing (SM) Power Save: [SMPS-STATIC] or [SMPS-DYNAMIC]
# (SMPS disabled if neither is set)
# HT-greenfield: [GF] (disabled if not set)
@ -397,7 +399,7 @@ wme_ac_vo_acm=0
# DSSS/CCK Mode in 40 MHz: [DSSS_CCK-40] = allowed (not allowed if not set)
# PSMP support: [PSMP] (disabled if not set)
# L-SIG TXOP protection support: [LSIG-TXOP-PROT] (disabled if not set)
#ht_capab=[HT40][SHORT-GI-20][SHORT-GI-40]
#ht_capab=[HT40-][SHORT-GI-20][SHORT-GI-40]
##### IEEE 802.1X-2004 related configuration ##################################

5
hostapd/ieee802_11.c
View File

@ -147,7 +147,12 @@ u8 * hostapd_eid_ht_operation(struct hostapd_data *hapd, u8 *eid)
oper = (struct ieee80211_ht_operation *) pos;
os_memset(oper, 0, sizeof(*oper));
oper->control_chan = hapd->iconf->channel;
oper->operation_mode = host_to_le16(hapd->iface->ht_op_mode);
if (hapd->iconf->secondary_channel == 1)
oper->ht_param |= HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE;
if (hapd->iconf->secondary_channel == -1)
oper->ht_param |= HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW;
pos += sizeof(*oper);

8
src/common/ieee802_11_defs.h
View File

@ -495,10 +495,6 @@ struct ht_cap_ie {
} STRUCT_PACKED;
#define EXT_CHNL_OFF_NONE 0
#define EXT_CHNL_OFF_ABOVE 1
#define EXT_CHNL_OFF_BELOW 3
#define REC_TRANS_CHNL_WIDTH_20 0
#define REC_TRANS_CHNL_WIDTH_ANY 1
@ -507,7 +503,9 @@ struct ht_cap_ie {
#define OP_MODE_20MHZ_HT_STA_ASSOCED 2
#define OP_MODE_MIXED 3
#define HT_INFO_HT_PARAM_EXT_CHNL_OFF_OFFSET 0
#define HT_INFO_HT_PARAM_SECONDARY_CHNL_OFF_MASK ((u8) BIT(0) | BIT(1))
#define HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE ((u8) BIT(0))
#define HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW ((u8) BIT(0) | BIT(1))
#define HT_INFO_HT_PARAM_REC_TRANS_CHNL_WIDTH ((u8) BIT(2))
#define HT_INFO_HT_PARAM_RIFS_MODE ((u8) BIT(3))
#define HT_INFO_HT_PARAM_CTRL_ACCESS_ONLY ((u8) BIT(4))