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Send broadcast Probe Response frames on the 6 GHz band

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Change Probe Response frames to be sent as broadcast for 6 GHz band per
IEEE Std 802.11ax‐2021, 26.17.2.3.2: "If a 6 GHz AP receives a Probe
Request frame and responds with a Probe Response frame (per 11.1.4.3.4),
the Address 1 field of the Probe Response frame shall be set to the
broadcast address, unless the AP is not indicating its actual SSID in
the SSID element of its Beacon frames."

Signed-off-by: Hari Chandrakanthan <quic_haric@quicinc.com>
This commit is contained in:
Hari Chandrakanthan 2023-02-10 18:10:14 +05:30 committed by Jouni Malinen
parent edfcb2f1a9
commit 6c75f1dfaf
1 changed files with 13 additions and 7 deletions
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20
src/ap/beacon.c
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@ -533,8 +533,7 @@ static u8 * hostapd_eid_mbssid_config(struct hostapd_data *hapd, u8 *eid,
static u8 * hostapd_gen_probe_resp(struct hostapd_data *hapd,
const struct ieee80211_mgmt *req,
int is_p2p, size_t *resp_len,
bool bcast_probe_resp, const u8 *known_bss,
u8 known_bss_len)
const u8 *known_bss, u8 known_bss_len)
{
struct ieee80211_mgmt *resp;
u8 *pos, *epos, *csa_pos;
@ -603,9 +602,16 @@ static u8 * hostapd_gen_probe_resp(struct hostapd_data *hapd,
resp->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
WLAN_FC_STYPE_PROBE_RESP);
if (req)
/* Unicast the response to all requests on bands other than 6 GHz. For
* the 6 GHz, unicast is used only if the actual SSID is not included in
* the Beacon frames. Otherwise, broadcast response is used per IEEE
* Std 802.11ax-2021, 26.17.2.3.2. Broadcast address is also used for
* the Probe Response frame template for the unsolicited (i.e., not as
* a response to a specific request) case. */
if (req && (!is_6ghz_op_class(hapd->iconf->op_class) ||
hapd->conf->ignore_broadcast_ssid))
os_memcpy(resp->da, req->sa, ETH_ALEN);
else if (bcast_probe_resp)
else
os_memset(resp->da, 0xff, ETH_ALEN);
os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN);
@ -1230,7 +1236,7 @@ void handle_probe_req(struct hostapd_data *hapd,
" signal=%d", MAC2STR(mgmt->sa), ssi_signal);
resp = hostapd_gen_probe_resp(hapd, mgmt, elems.p2p != NULL,
&resp_len, false, elems.mbssid_known_bss,
&resp_len, elems.mbssid_known_bss,
elems.mbssid_known_bss_len);
if (resp == NULL)
return;
@ -1301,7 +1307,7 @@ static u8 * hostapd_probe_resp_offloads(struct hostapd_data *hapd,
"this");
/* Generate a Probe Response template for the non-P2P case */
return hostapd_gen_probe_resp(hapd, NULL, 0, resp_len, false, NULL, 0);
return hostapd_gen_probe_resp(hapd, NULL, 0, resp_len, NULL, 0);
}
#endif /* NEED_AP_MLME */
@ -1320,7 +1326,7 @@ static u8 * hostapd_unsol_bcast_probe_resp(struct hostapd_data *hapd,
return hostapd_gen_probe_resp(hapd, NULL, 0,
&params->unsol_bcast_probe_resp_tmpl_len,
true, NULL, 0);
NULL, 0);
}
#endif /* CONFIG_IEEE80211AX */