From 6f21ab30469d670de620f758330aca9f3433f693 Mon Sep 17 00:00:00 2001
From: Brian Norris <briannorris@chromium.org>
Date: Thu, 14 Feb 2019 16:31:29 -0800
Subject: [PATCH] mwifiex: don't advertise IBSS features without FW support
Git-commit: 6f21ab30469d670de620f758330aca9f3433f693
Patch-mainline: v5.1-rc1
References: bsc#1111666 bsc#1129770
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: e267e71e68ae ("mwifiex: Disable adhoc feature based on firmware capability")
Signed-off-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/net/wireless/marvell/mwifiex/cfg80211.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/drivers/net/wireless/marvell/mwifiex/cfg80211.c b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
index 9ef0fc108641..c46f0a54a0c7 100644
--- 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 |
--
2.16.4