Oleg Bulyzhin a3a981b7f9 Optimize packet flow: if net.inet.ip.fw.one_pass != 0 and packet was
processed by ipfw once - avoid second ipfw_chk() call.
This saves us from unnecessary IPFW_RLOCK(), m_tag_find() calls and
ip/tcp/udp header parsing.

MFC after:	2 month
2009-04-27 17:37:36 +00:00
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