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authorJohannes Berg <johannes.berg@intel.com>2011-12-14 12:20:27 +0100
committerJohn W. Linville <linville@tuxdriver.com>2011-12-15 14:45:45 -0500
commitbdd90d5e36a55271beb957b3d7ca3e29b2a90207 (patch)
tree79243e73e6c64217bc676507504b72a2d59fc096 /include
parentd83023daa219486e9aa139d423308a045bf0438b (diff)
downloadlinux-bdd90d5e36a55271beb957b3d7ca3e29b2a90207.tar.bz2
cfg80211: validate nl80211 station handling better
The nl80211 station handling code is a bit messy and doesn't do a lot of validation. It seems like this could be an issue for drivers that don't use mac80211 to validate everything. As cfg80211 doesn't keep station state, move the validation of allowing supported_rates to change for TDLS only in station mode to mac80211. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/nl80211.h6
-rw-r--r--include/net/cfg80211.h7
2 files changed, 11 insertions, 2 deletions
diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
index a18760684fc9..f795cb7dccdd 100644
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h
@@ -1536,7 +1536,11 @@ enum nl80211_iftype {
* @NL80211_STA_FLAG_WME: station is WME/QoS capable
* @NL80211_STA_FLAG_MFP: station uses management frame protection
* @NL80211_STA_FLAG_AUTHENTICATED: station is authenticated
- * @NL80211_STA_FLAG_TDLS_PEER: station is a TDLS peer
+ * @NL80211_STA_FLAG_TDLS_PEER: station is a TDLS peer -- this flag should
+ * only be used in managed mode (even in the flags mask). Note that the
+ * flag can't be changed, it is only valid while adding a station, and
+ * attempts to change it will silently be ignored (rather than rejected
+ * as errors.)
* @NL80211_STA_FLAG_MAX: highest station flag number currently defined
* @__NL80211_STA_FLAG_AFTER_LAST: internal use
*/
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 150c0ee714c2..5eda5933ae01 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1346,7 +1346,12 @@ struct cfg80211_gtk_rekey_data {
*
* @add_station: Add a new station.
* @del_station: Remove a station; @mac may be NULL to remove all stations.
- * @change_station: Modify a given station.
+ * @change_station: Modify a given station. Note that flags changes are not much
+ * validated in cfg80211, in particular the auth/assoc/authorized flags
+ * might come to the driver in invalid combinations -- make sure to check
+ * them, also against the existing state! Also, supported_rates changes are
+ * not checked in station mode -- drivers need to reject (or ignore) them
+ * for anything but TDLS peers.
* @get_station: get station information for the station identified by @mac
* @dump_station: dump station callback -- resume dump at index @idx
*