igb: Do not parse past IP header on fragments beyond the first

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This change makes it so that only the first fragment in a series of fragments
will have the L4 header pulled.  Previously we were always pulling the L4
header as well and in the case of UDP this can harm performance since only the
first fragment will have the header, the rest just contain data which should
be left in the paged portion of the packet.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

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Alexander Duyck 2012-11-13 01:13:38 +00:00 • committed by Jeff Kirsher

parent 63d4a8f963

commit f2fb4ab2a6

1 changed files with 7 additions and 4 deletions

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drivers/net/ethernet/intel/igb/igb_main.c

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