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-rw-r--r--include/net/cfg80211.h7
-rw-r--r--net/wireless/scan.c12
2 files changed, 15 insertions, 4 deletions
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index a75fabd18502..920ec8c1ce54 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -2961,6 +2961,12 @@ struct wiphy_vendor_command {
* and probe responses. This value should be set if the driver
* wishes to limit the number of csa counters. Default (0) means
* infinite.
+ * @max_adj_channel_rssi_comp: max offset of between the channel on which the
+ * frame was sent and the channel on which the frame was heard for which
+ * the reported rssi is still valid. If a driver is able to compensate the
+ * low rssi when a frame is heard on different channel, then it should set
+ * this variable to the maximal offset for which it can compensate.
+ * This value should be set in MHz.
*/
struct wiphy {
/* assign these fields before you register the wiphy */
@@ -3079,6 +3085,7 @@ struct wiphy {
u16 max_ap_assoc_sta;
u8 max_num_csa_counters;
+ u8 max_adj_channel_rssi_comp;
char priv[0] __aligned(NETDEV_ALIGN);
};
diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index 0f5da18cc619..77c56eef0574 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -883,6 +883,7 @@ cfg80211_inform_bss_width(struct wiphy *wiphy,
struct cfg80211_bss_ies *ies;
struct ieee80211_channel *channel;
struct cfg80211_internal_bss tmp = {}, *res;
+ bool signal_valid;
if (WARN_ON(!wiphy))
return NULL;
@@ -919,8 +920,9 @@ cfg80211_inform_bss_width(struct wiphy *wiphy,
rcu_assign_pointer(tmp.pub.beacon_ies, ies);
rcu_assign_pointer(tmp.pub.ies, ies);
- res = cfg80211_bss_update(wiphy_to_rdev(wiphy), &tmp,
- rx_channel == channel);
+ signal_valid = abs(rx_channel->center_freq - channel->center_freq) <=
+ wiphy->max_adj_channel_rssi_comp;
+ res = cfg80211_bss_update(wiphy_to_rdev(wiphy), &tmp, signal_valid);
if (!res)
return NULL;
@@ -944,6 +946,7 @@ cfg80211_inform_bss_width_frame(struct wiphy *wiphy,
struct cfg80211_internal_bss tmp = {}, *res;
struct cfg80211_bss_ies *ies;
struct ieee80211_channel *channel;
+ bool signal_valid;
size_t ielen = len - offsetof(struct ieee80211_mgmt,
u.probe_resp.variable);
@@ -991,8 +994,9 @@ cfg80211_inform_bss_width_frame(struct wiphy *wiphy,
tmp.pub.beacon_interval = le16_to_cpu(mgmt->u.probe_resp.beacon_int);
tmp.pub.capability = le16_to_cpu(mgmt->u.probe_resp.capab_info);
- res = cfg80211_bss_update(wiphy_to_rdev(wiphy), &tmp,
- rx_channel == channel);
+ signal_valid = abs(rx_channel->center_freq - channel->center_freq) <=
+ wiphy->max_adj_channel_rssi_comp;
+ res = cfg80211_bss_update(wiphy_to_rdev(wiphy), &tmp, signal_valid);
if (!res)
return NULL;