Fixes from Phil Wood:

	Don't subtract "tp_drops" from "tp_packets" - "ps_recv", on BSD,
	at least, includes packets dropped due to lack of buffer space,
	so it should do so on Linux as well.

	The "len" argument to "getsockopt()" is a value-result
	parameter, initially containing the size of the buffer being
	supplied; set it before the call.

	Catch "getsockopt()" errors and, if it's an error other than
	EOPNOTSUPP, return an error.
2 files changed