mwifiex: don't advertise IBSS features without FW support

As it is, doing something like # iw phy phy0 interface add foobar type ibss on a firmware that doesn't have ad-hoc support just yields failures of HostCmd_CMD_SET_BSS_MODE, which happened to return a '-1' error code (-EPERM? not really right...) and sometimes may even crash the firmware along the way. Let's parse the firmware capability flag while registering the wiphy, so we don't allow attempting IBSS at all, and we get a proper -EOPNOTSUPP from nl80211 instead. Fixes: e267e71 ("mwifiex: Disable adhoc feature based on firmware capability") Signed-off-by: Brian Norris <[email protected]> Signed-off-by: Kalle Valo <[email protected]>
jangid · Feb 19, 2019 · 6f21ab3 · 6f21ab3
1 parent 65a576e
commit 6f21ab3
Showing 1 changed file with 7 additions and 3 deletions.
diff --git a/drivers/net/wireless/marvell/mwifiex/cfg80211.c b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
@@ -4319,11 +4319,13 @@ int mwifiex_register_cfg80211(struct mwifiex_adapter *adapter)
 	wiphy->mgmt_stypes = mwifiex_mgmt_stypes;
 	wiphy->max_remain_on_channel_duration = 5000;
 	wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
-				 BIT(NL80211_IFTYPE_ADHOC) |
 				 BIT(NL80211_IFTYPE_P2P_CLIENT) |
 				 BIT(NL80211_IFTYPE_P2P_GO) |
 				 BIT(NL80211_IFTYPE_AP);
 
+	if (ISSUPP_ADHOC_ENABLED(adapter->fw_cap_info))
+		wiphy->interface_modes |= BIT(NL80211_IFTYPE_ADHOC);
+
 	wiphy->bands[NL80211_BAND_2GHZ] = &mwifiex_band_2ghz;
 	if (adapter->config_bands & BAND_A)
 		wiphy->bands[NL80211_BAND_5GHZ] = &mwifiex_band_5ghz;
@@ -4383,11 +4385,13 @@ int mwifiex_register_cfg80211(struct mwifiex_adapter *adapter)
 	wiphy->available_antennas_tx = BIT(adapter->number_of_antenna) - 1;
 	wiphy->available_antennas_rx = BIT(adapter->number_of_antenna) - 1;
 
-	wiphy->features |= NL80211_FEATURE_HT_IBSS |
-			   NL80211_FEATURE_INACTIVITY_TIMER |
+	wiphy->features |= NL80211_FEATURE_INACTIVITY_TIMER |
 			   NL80211_FEATURE_LOW_PRIORITY_SCAN |
 			   NL80211_FEATURE_NEED_OBSS_SCAN;
 
+	if (ISSUPP_ADHOC_ENABLED(adapter->fw_cap_info))
+		wiphy->features |= NL80211_FEATURE_HT_IBSS;
+
 	if (ISSUPP_RANDOM_MAC(adapter->fw_cap_info))
 		wiphy->features |= NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR |
 				   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |