Unsolicited broadcast probe response tranmission is used for in-band
discovery in 6GHz band (IEEE P802.11ax/D6.0 26.17.2.3.2, AP behavior for
fast passive scanning).
The new attribute, NL80211_ATTR_UNSOL_BCAST_PROBE_RESP, is nested which
supports following parameters:
(1) NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT - Packet interval
(2) NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL - Template data
Signed-off-by: Aloka Dixit <alokad@xxxxxxxxxxxxxx>
---
src/drivers/driver_nl80211.c | 51 +++++++++++++++++++++++++++++++
src/drivers/driver_nl80211.h | 1 +
src/drivers/driver_nl80211_capa.c | 5 +++
3 files changed, 57 insertions(+)
diff --git a/src/drivers/driver_nl80211.c b/src/drivers/driver_nl80211.c
index 2ee34d11d64e..dc3c5aa672ff 100644
--- a/src/drivers/driver_nl80211.c
+++ b/src/drivers/driver_nl80211.c
@@ -4301,6 +4301,48 @@ static int nl80211_set_multicast_to_unicast(struct i802_bss *bss,
}
+#ifdef CONFIG_IEEE80211AX
+static int nl80211_unsol_bcast_probe_resp(struct i802_bss *bss,
+ struct nl_msg *msg,
+ struct wpa_driver_ap_params *params)
+{
+ struct nlattr *attr;
+
+ if (!bss->drv->unsol_bcast_probe_resp) {
+ wpa_printf(MSG_ERROR,
+ "nl80211: Driver does not support unsolicited broadcast probe response transmission for %s\n",
+ bss->ifname);
+ return -1;
+ }
+
+ attr = nla_nest_start(msg, NL80211_ATTR_UNSOL_BCAST_PROBE_RESP);
+ if (!attr)
+ return -1;
+
+ if (nla_put_u32(msg, NL80211_UNSOL_BCAST_PROBE_RESP_INT,
+ params->unsol_bcast_probe_resp_interval)) {
+ wpa_printf(MSG_ERROR,
+ "nl80211: Failed to build unsolicited broadcast probe response msg for %s\n",
+ bss->ifname);
+ return -1;
+ }
+
+ if (params->unsol_bcast_probe_resp_tmpl &&
+ nla_put(msg, NL80211_UNSOL_BCAST_PROBE_RESP_TMPL,
+ params->unsol_bcast_probe_resp_tmpl_len,
+ params->unsol_bcast_probe_resp_tmpl)) {
+ wpa_printf(MSG_ERROR,
+ "nl80211: Failed to build unsolicited broadcast probe response msg for %s\n",
+ bss->ifname);
+ return -1;
+ }
+
+ nla_nest_end(msg, attr);
+ return 0;
+}
+#endif /* CONFIG_IEEE80211AX */
+
+
static int wpa_driver_nl80211_set_ap(void *priv,
struct wpa_driver_ap_params *params)
{
@@ -4559,6 +4601,15 @@ static int wpa_driver_nl80211_set_ap(void *priv,
if (nla_put_flag(msg, NL80211_ATTR_TWT_RESPONDER))
goto fail;
}
+
+ if (params->unsol_bcast_probe_resp_interval) {
+ wpa_printf(MSG_DEBUG,
+ "nl80211: unsolicited probe response interval = %u\n",
+ params->unsol_bcast_probe_resp_interval);
+ ret = nl80211_unsol_bcast_probe_resp(bss, msg, params);
+ if (ret < 0)
+ goto fail;
+ }
#endif /* CONFIG_IEEE80211AX */
ret = send_and_recv_msgs_owner(drv, msg, get_connect_handle(bss), 1,
diff --git a/src/drivers/driver_nl80211.h b/src/drivers/driver_nl80211.h
index 017c025a0d75..5528eba85022 100644
--- a/src/drivers/driver_nl80211.h
+++ b/src/drivers/driver_nl80211.h
@@ -174,6 +174,7 @@ struct wpa_driver_nl80211_data {
unsigned int control_port_ap:1;
unsigned int multicast_registrations:1;
unsigned int no_rrm:1;
+ unsigned int unsol_bcast_probe_resp:1;
u64 vendor_scan_cookie;
u64 remain_on_chan_cookie;
diff --git a/src/drivers/driver_nl80211_capa.c b/src/drivers/driver_nl80211_capa.c
index 46f61fdbf925..62cc9f0fda23 100644
--- a/src/drivers/driver_nl80211_capa.c
+++ b/src/drivers/driver_nl80211_capa.c
@@ -644,6 +644,11 @@ static void wiphy_info_ext_feature_flags(struct wiphy_info_data *info,
if (ext_feature_isset(ext_features, len,
NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS))
info->drv->multicast_registrations = 1;
+
+ if (ext_feature_isset(ext_features, len,
+ NL80211_EXT_FEATURE_UNSOL_BCAST_PROBE_RESP))
+ info->drv->unsol_bcast_probe_resp = 1;
+
}
--
2.25.0
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