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    cfg80211: size various nl80211 messages correctly · 4ef8c1c9
    Johannes Berg 提交于
    Ilan reported that sometimes nl80211 messages weren't working if
    the frames being transported got very large, which was really a
    problem for userspace-to-kernel messages, but prompted me to look
    at the code.
    
    Upon review, I found various places where variable-length data is
    transported in an nl80211 message but the message isn't allocated
    taking that into account. This shouldn't cause any problems since
    the frames aren't really that long, apart in one place where two
    (possibly very long frames) might not fit.
    
    Fix all the places (that I found) that get variable length data
    from the driver and put it into a message to take the length of
    the variable data into account. The 100 there is just a safe
    constant for the remaining message overhead (it's usually around
    50 for most messages.)
    Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
    4ef8c1c9
nl80211.c 385.3 KB