diff options
| author | Tosoni <jp.tosoni@acksys.fr> | 2018-03-14 17:58:34 +0100 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2018-03-21 11:27:11 +0100 |
| commit | 1ad22fb5bb53ce6bf5377f25529c0a007c61c6f5 (patch) | |
| tree | 3932788cc832ac2f081e81f6588fbb1c6729bddd /net/mac80211/scan.c | |
| parent | mac80211_hwsim: fix use-after-free bug in hwsim_exit_net (diff) | |
| download | linux-1ad22fb5bb53ce6bf5377f25529c0a007c61c6f5.tar.xz linux-1ad22fb5bb53ce6bf5377f25529c0a007c61c6f5.zip | |
mac80211: inform wireless layer when frame RSSI is invalid
When the low-level driver returns an invalid RSSI indication,
set the signal value to 0 as an indication to the upper layer.
Also, skip average level computation if signal is invalid.
Signed-off-by: Jean Pierre TOSONI <jp.tosoni@acksys.fr>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/scan.c')
| -rw-r--r-- | net/mac80211/scan.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c index ef2becaade50..a3b1bcc2b461 100644 --- a/net/mac80211/scan.c +++ b/net/mac80211/scan.c @@ -73,7 +73,9 @@ ieee80211_bss_info_update(struct ieee80211_local *local, bool signal_valid; struct ieee80211_sub_if_data *scan_sdata; - if (ieee80211_hw_check(&local->hw, SIGNAL_DBM)) + if (rx_status->flag & RX_FLAG_NO_SIGNAL_VAL) + bss_meta.signal = 0; /* invalid signal indication */ + else if (ieee80211_hw_check(&local->hw, SIGNAL_DBM)) bss_meta.signal = rx_status->signal * 100; else if (ieee80211_hw_check(&local->hw, SIGNAL_UNSPEC)) bss_meta.signal = (rx_status->signal * 100) / local->hw.max_signal; |