sam e74e7998d8 o add BIOCGDLTLIST and BIOCSDLT ioctls to get the data link type list
and set the link type for use by libpcap and tcpdump
o move mtx unlock in bpfdetach up; it doesn't need to be held so long
o change printf in bpf_detach to distinguish it from the same one in bpfsetdlt

Note there are locking issues here related to ioctl processing; they
have not been addressed here.

Submitted by:	Guy Harris <guy@alum.mit.edu>
Obtained from:	NetBSD (w/ locking modifications)
2003-01-20 19:08:46 +00:00
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