we bailed if we couldn't collect the 16-bytes of data required
for an aes block cipher in 2 mbufs; now we deal with it. While
here make space accounting signed so a sanity check does the
right thing for malformed mbuf chains.
Approved by: re (scottl)
it; instead pass the space occupied by the header down into the
crypto modules (except in the demic case which needs it only when
doing int in s/w)
o while here fix defrag to strip the header from 2nd and later frames
o teach decap code how to handle 4-address frames
here but it includes completed 802.11g, WPA, 802.11i, 802.1x, WME/WMM,
AP-side power-save, crypto plugin framework, authenticator plugin framework,
and access control plugin frameowrk.
