K 10
svn:author
V 4
avos
K 8
svn:date
V 27
2017-12-30T00:40:34.368039Z
K 7
svn:log
V 628
net80211: sanitize input for ieee80211_output()

- Add some basic checks for i_fc* bits (ToDS, FromDS, MoreFrag, Protected);
those are used / checked across various places in Tx path.
- Mark injected 802.11 frame as encapsulated (just as it should be).
- Classify 802.11 frame in a proper way (extract ether_type from LLC header
for Data frames, use AC_BE queue for others (NoData / Management / Control).
- Subtract header length from tx_bytes statistics (so it will correspond
to the comment).

Was checked with RTL8188EU (AP) + Intel 6205 (STA).

Reviewed by:	adrian
Differential Revision:	https://reviews.freebsd.org/D13161

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