Author: eadler
Date: Thu Mar 1 06:42:47 2018
New Revision: 330212
URL: https://svnweb.freebsd.org/changeset/base/330212
Log:
MFC r318224:
[iwm] Refuse connection to APs with beacon interval < 16.
Modified:
stable/11/sys/dev/iwm/if_iwm.c
Directory Properties:
stable/11/ (props changed)
Modified: stable/11/sys/dev/iwm/if_iwm.c
==============================================================================
--- stable/11/sys/dev/iwm/if_iwm.c Thu Mar 1 06:42:19 2018
(r330211)
+++ stable/11/sys/dev/iwm/if_iwm.c Thu Mar 1 06:42:47 2018
(r330212)
@@ -3961,6 +3961,21 @@ iwm_auth(struct ieee80211vap *vap, struct iwm_softc *s
in->in_assoc = 0;
+ /*
+ * Firmware bug - it'll crash if the beacon interval is less
+ * than 16. We can't avoid connecting at all, so refuse the
+ * station state change, this will cause net80211 to abandon
+ * attempts to connect to this AP, and eventually wpa_s will
+ * blacklist the AP...
+ */
+ if (ni->ni_intval < 16) {
+ device_printf(sc->sc_dev,
+ "AP %s beacon interval is %d, refusing due to firmware
bug!\n",
+ ether_sprintf(ni->ni_bssid), ni->ni_intval);
+ error = EINVAL;
+ goto out;
+ }
+
error = iwm_mvm_sf_config(sc, IWM_SF_FULL_ON);
if (error != 0)
return error;
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