tree 3d01512741ad7b572f7ad25519680fe02dcce569
parent a31cf1c69e89e0c2d5515b04aca313f1014a714d
author Johannes Berg <johannes.berg@intel.com> 1430836349 +0200
committer Johannes Berg <johannes.berg@intel.com> 1430911800 +0200

mac80211: validate cipher scheme PN length better

Currently, a cipher scheme can advertise an arbitrarily long
sequence counter, but mac80211 only supports up to 16 bytes
and the initial value from userspace will be truncated.

Fix two things:
 * don't allow the driver to register anything longer than
   the 16 bytes that mac80211 reserves space for
 * require userspace to specify a starting value with the
   correct length (or none at all)

Signed-off-by: Johannes Berg <johannes.berg@intel.com>