sizeof(struct bpf_hdr). On machines that we currently support that
can use the old definition (which just covers the size of the data in
struct bpf_hdr), use it even though it's a hack. (This was changed
for the 'new architectures' case so as to be fail-safe; BPF may
waste a few bytes of space per captured packet on new architectures,
but now at least it's more likely to work.)
* grok FIONBIO, FIOASYNC, and TIOC{G,S}PGRP
* add BIOC{G,S}RSIG; get/set the signal to be delivered
to the process or process group upon packet reception.
Defaults to SIGIO.
don't assume that tick is >= 1000; loses badly on alpha (div. by zero)
only try unaligned copies if NetBSD's UNALIGNED_ACCESS symbol is defined.
various misc type size cleanups, mostly short -> int16_t.
mikel