Hi, I've posted on -net but in case people will have some feedback on this before commit. There is two solutions, let every driver get a test for MCLBYTES and call m_getcl (and then add support for at least igb, em, ixgbe) or integrate the fast path in m_getjcl.
I've chosen to integrate the fast path in m_getjcl and patched the two case now redundant in the attached patch. From freebsd-net@: While doing some 10Gb benchmark i've found that m_getjcl does not benefit from the packet zone. There is a ~ 80% increase in FPS when applying the following patch. 256B frame driver to driver / stable_8: - 3 765 066 FPS - 6 868 153 FPS with the patch applied. Any advice ? Fabien
patch-m_getjcl-packet
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