From 78ad2341521d5ea96cb936244ed4c4c4ef9ec13b Mon Sep 17 00:00:00 2001 From: Alexander Wetzel Date: Sat, 9 Feb 2019 15:01:38 +0100 Subject: mac80211: Honor SW_CRYPTO_CONTROL for unicast keys in AP VLAN mode Restore SW_CRYPTO_CONTROL operation on AP_VLAN interfaces for unicast keys, the original override was intended to be done for group keys as those are treated specially by mac80211 and would always have been rejected. Now the situation is that AP_VLAN support must be enabled by the driver if it can support it (meaning it can support software crypto GTK TX). Thus, also simplify the code - if we get here with AP_VLAN and non- pairwise key, software crypto must be used (driver doesn't know about the interface) and can be used (driver must've advertised AP_VLAN if it also uses SW_CRYPTO_CONTROL). Fixes: db3bdcb9c3ff ("mac80211: allow AP_VLAN operation on crypto controlled devices") Signed-off-by: Alexander Wetzel [rewrite commit message] Signed-off-by: Johannes Berg --- net/mac80211/key.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) (limited to 'net/mac80211') diff --git a/net/mac80211/key.c b/net/mac80211/key.c index 4700718e010f..37e372896230 100644 --- a/net/mac80211/key.c +++ b/net/mac80211/key.c @@ -167,8 +167,10 @@ static int ieee80211_key_enable_hw_accel(struct ieee80211_key *key) * The driver doesn't know anything about VLAN interfaces. * Hence, don't send GTKs for VLAN interfaces to the driver. */ - if (!(key->conf.flags & IEEE80211_KEY_FLAG_PAIRWISE)) + if (!(key->conf.flags & IEEE80211_KEY_FLAG_PAIRWISE)) { + ret = 1; goto out_unsupported; + } } ret = drv_set_key(key->local, SET_KEY, sdata, @@ -213,11 +215,8 @@ static int ieee80211_key_enable_hw_accel(struct ieee80211_key *key) /* all of these we can do in software - if driver can */ if (ret == 1) return 0; - if (ieee80211_hw_check(&key->local->hw, SW_CRYPTO_CONTROL)) { - if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) - return 0; + if (ieee80211_hw_check(&key->local->hw, SW_CRYPTO_CONTROL)) return -EINVAL; - } return 0; default: return -EINVAL; -- cgit v1.2.3