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FILS: EHT additions

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Add support for EHT phy index and maximum NSS as per IEEE P802.11be/D4.0,
9.6.7.36 and 9.4.2.313.4.

Signed-off-by: Aloka Dixit <quic_alokad@quicinc.com>
This commit is contained in:
Aloka Dixit 2023-07-24 16:16:26 -07:00 • committed by Jouni Malinen
parent 26f29ef46d
commit 1dfcafff36
2 changed files with 35 additions and 1 deletions
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35
src/ap/beacon.c
View file

@ -1377,6 +1377,11 @@ void sta_track_del(struct hostapd_sta_info *info)
static u16 hostapd_gen_fils_discovery_phy_index(struct hostapd_data *hapd)
{
#ifdef CONFIG_IEEE80211BE
if (hapd->iconf->ieee80211be && !hapd->conf->disable_11be)
return FD_CAP_PHY_INDEX_EHT;
#endif /* CONFIG_IEEE80211BE */
#ifdef CONFIG_IEEE80211AX
if (hapd->iconf->ieee80211ax && !hapd->conf->disable_11ax)
return FD_CAP_PHY_INDEX_HE;
@ -1399,7 +1404,10 @@ static u16 hostapd_gen_fils_discovery_nss(struct hostapd_hw_modes *mode,
{
u16 nss = 0;
if (mode && phy_index == FD_CAP_PHY_INDEX_HE) {
if (!mode)
return 0;
if (phy_index == FD_CAP_PHY_INDEX_HE) {
const u8 *he_mcs = mode->he_capab[IEEE80211_MODE_AP].mcs;
int i;
u16 mcs[6];
@ -1449,6 +1457,31 @@ static u16 hostapd_gen_fils_discovery_nss(struct hostapd_hw_modes *mode,
continue;
}
}
} else if (phy_index == FD_CAP_PHY_INDEX_EHT) {
u8 rx_nss, tx_nss, max_nss = 0, i;
u8 *mcs = mode->eht_capab[IEEE80211_MODE_AP].mcs;
/*
* The Supported EHT-MCS And NSS Set field for the AP contains
* one to three EHT-MCS Map fields based on the supported
* bandwidth. Check the first byte (max NSS for Rx/Tx that
* supports EHT-MCS 0-9) for each bandwidth (<= 80,
* 160, 320) to find the maximum NSS. This assumes that
* the lowest MCS rates support the largest number of spatial
* streams. If values are different between Tx, Rx or the
* bandwidths, choose the highest value.
*/
for (i = 0; i < 3; i++) {
rx_nss = mcs[3 * i] & 0x0F;
if (rx_nss > max_nss)
max_nss = rx_nss;
tx_nss = (mcs[3 * i] & 0xF0) >> 4;
if (tx_nss > max_nss)
max_nss = tx_nss;
}
nss = max_nss;
}
if (nss > 4)

1
src/common/ieee802_11_defs.h
View file

@ -2848,6 +2848,7 @@ enum mscs_description_subelem {
#define FD_CAP_PHY_INDEX_HT 2
#define FD_CAP_PHY_INDEX_VHT 3
#define FD_CAP_PHY_INDEX_HE 4 /* P802.11ax */
#define FD_CAP_PHY_INDEX_EHT 5 /* P802.11be */
#define FD_CAP_PHY_INDEX_SHIFT 10
/*