nl80211: specify RSSI threshold in scheduled scan

Support configuring an RSSI threshold in dBm (s32) when requesting
scheduled scan, below which a BSS won't be reported by the cfg80211
driver.

Signed-off-by: Thomas Pedersen <c_tpeder@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 8 insertions, 1 deletions

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 888fadc4d63e..234ff3bbd104 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -340,6 +340,7 @@ static const struct nla_policy
 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
                                                  .len = IEEE80211_MAX_SSID_LEN },
+        [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 };
 
 /* ifidx get helper */
@@ -4387,7 +4388,7 @@ static int nl80211_start_sched_scan(struct sk_buff *skb,
                 nla_for_each_nested(attr,
                                     info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
                                     tmp) {
-                        struct nlattr *ssid;
+                        struct nlattr *ssid, *rssi;
 
                         nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
                                   nla_data(attr), nla_len(attr),
@@ -4403,6 +4404,12 @@ static int nl80211_start_sched_scan(struct sk_buff *skb,
                                 request->match_sets[i].ssid.ssid_len =
                                         nla_len(ssid);
                         }
+                        rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
+                        if (rssi)
+                                request->rssi_thold = nla_get_u32(rssi);
+                        else
+                                request->rssi_thold =
+                                                   NL80211_SCAN_RSSI_THOLD_OFF;
                         i++;
                 }
         }