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authorMarkus Theil <markus.theil@tu-ilmenau.de>2020-03-12 10:10:53 +0100
committerJohannes Berg <johannes.berg@intel.com>2020-03-20 14:42:19 +0100
commit5631d96aa396d75b99bf522750a5a8378337aefc (patch)
tree2665f0d8f829678c9ad31d78a7c687d3ed156817 /net/wireless
parent5d44fe7c9808c56e136e59147bd932f5491520f1 (diff)
downloadlinux-5631d96aa396d75b99bf522750a5a8378337aefc.tar.bz2
nl80211: add no pre-auth attribute and ext. feature flag for ctrl. port
If the nl80211 control port is used before this patch, pre-auth frames (0x88c7) are send to userspace uncoditionally. While this enables userspace to only use nl80211 on the station side, it is not always useful for APs. Furthermore, pre-auth frames are ordinary data frames and not related to the control port. Therefore it should for example be possible for pre-auth frames to be bridged onto a wired network on AP side without touching userspace. For backwards compatibility to code already using pre-auth over nl80211, this patch adds a feature flag to disable this behavior, while it remains enabled by default. An additional ext. feature flag is added to detect this from userspace. Thanks to Jouni for pointing out, that pre-auth frames should be handled as ordinary data frames. Signed-off-by: Markus Theil <markus.theil@tu-ilmenau.de> Link: https://lore.kernel.org/r/20200312091055.54257-2-markus.theil@tu-ilmenau.de Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless')
-rw-r--r--net/wireless/nl80211.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 750b73a52fd8..c6ab3776eff9 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -658,6 +658,7 @@ const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
[NL80211_ATTR_HE_BSS_COLOR] = NLA_POLICY_NESTED(he_bss_color_policy),
[NL80211_ATTR_TID_CONFIG] =
NLA_POLICY_NESTED_ARRAY(nl80211_tid_config_attr_policy),
+ [NL80211_ATTR_CONTROL_PORT_NO_PREAUTH] = { .type = NLA_FLAG },
};
/* policy for the key attributes */