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MBSSID: Include Extended Capabilities element in non-TX BSSID profile

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Add the Extended Capabilities element for a non-TX BSS into the non-TX
BSSID profile subelement in the Multiple BSSID element if the non-TX BSS
has different extended capabilities than the TX BSS.

Signed-off-by: Jouni Malinen <quic_jouni@quicinc.com>
This commit is contained in:
Jouni Malinen 2024-04-04 20:42:59 +03:00 committed by Jouni Malinen
parent 37c00c3c5d
commit 1f230a497a
1 changed files with 29 additions and 0 deletions
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29
src/ap/ieee802_11.c
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@ -7791,6 +7791,27 @@ static bool mbssid_known_bss(unsigned int i, const u8 *known_bss,
}
static size_t hostapd_mbssid_ext_capa(struct hostapd_data *bss,
struct hostapd_data *tx_bss, u8 *buf)
{
u8 ext_capa_tx[20], *ext_capa_tx_end, ext_capa[20], *ext_capa_end;
size_t ext_capa_len, ext_capa_tx_len;
ext_capa_tx_end = hostapd_eid_ext_capab(tx_bss, ext_capa_tx,
true);
ext_capa_tx_len = ext_capa_tx_end - ext_capa_tx;
ext_capa_end = hostapd_eid_ext_capab(bss, ext_capa, true);
ext_capa_len = ext_capa_end - ext_capa;
if (ext_capa_tx_len != ext_capa_len ||
os_memcmp(ext_capa_tx, ext_capa, ext_capa_len) != 0) {
os_memcpy(buf, ext_capa, ext_capa_len);
return ext_capa_len;
}
return 0;
}
static size_t hostapd_eid_mbssid_elem_len(struct hostapd_data *hapd,
u32 frame_type, size_t *bss_index,
const u8 *known_bss,
@ -7798,6 +7819,7 @@ static size_t hostapd_eid_mbssid_elem_len(struct hostapd_data *hapd,
{
struct hostapd_data *tx_bss = hostapd_mbssid_get_tx_bss(hapd);
size_t len, i;
u8 ext_capa[20];
/* Element ID: 1 octet
* Length: 1 octet
@ -7843,6 +7865,10 @@ static size_t hostapd_eid_mbssid_elem_len(struct hostapd_data *hapd,
if (rsnx)
nontx_profile_len += 2 + rsnx[1];
}
nontx_profile_len += hostapd_mbssid_ext_capa(bss, tx_bss,
ext_capa);
if (!rsn && hostapd_wpa_ie(tx_bss, WLAN_EID_RSN))
ie_count++;
if (!rsnx && hostapd_wpa_ie(tx_bss, WLAN_EID_RSNX))
@ -7992,6 +8018,9 @@ static u8 * hostapd_eid_mbssid_elem(struct hostapd_data *hapd, u8 *eid, u8 *end,
eid += 2 + rsnx[1];
}
}
eid += hostapd_mbssid_ext_capa(bss, tx_bss, eid);
/* List of Element ID values in increasing order */
if (!rsn && hostapd_wpa_ie(tx_bss, WLAN_EID_RSN))
non_inherit_ie[ie_count++] = WLAN_EID_RSN;