nl80211: Support for RNR elements

Add new nested netlink attribute, NL80211_ATTR_EMA_RNR_ELEMS, to send
the reduced neighbor report (RNR) elements to the driver when EMA is
enabled. This attribute includes the count of RNR elements and data at
each index. While generating EMA beacons, the driver will include RNR
group at a given index along with MBSSID group. The last element, if
present, has RNR data common for all EMA beacons such as neighbor APs.

Signed-off-by: Aloka Dixit <quic_alokad@quicinc.com>

1 files changed, 22 insertions, 0 deletions

diff --git a/src/drivers/driver_nl80211.c b/src/drivers/driver_nl80211.c
index 31be2a547..467f46cf4 100644
--- a/src/drivers/driver_nl80211.c
+++ b/src/drivers/driver_nl80211.c
@@ -4725,6 +4725,28 @@ static int nl80211_mbssid(struct nl_msg *msg,
 		nla_nest_end(msg, elems);
 	}
 
+	if (!params->ema)
+		return 0;
+
+	if (params->rnr_elem_count && params->rnr_elem_len &&
+	    params->rnr_elem_offset && *params->rnr_elem_offset) {
+		u8 i, **offs = params->rnr_elem_offset;
+
+		elems = nla_nest_start(msg, NL80211_ATTR_EMA_RNR_ELEMS);
+		if (!elems)
+			return -1;
+
+		for (i = 0; i < params->rnr_elem_count - 1; i++) {
+			if (nla_put(msg, i + 1, offs[i + 1] - offs[i], offs[i]))
+				return -1;
+		}
+
+		if (nla_put(msg, i + 1, *offs + params->rnr_elem_len - offs[i],
+			    offs[i]))
+			return -1;
+		nla_nest_end(msg, elems);
+	}
+
 	return 0;
 }