ixgbe: Add support for build_skb

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This patch adds build_skb support to the Rx path.  There are several
advantages to this change.

1.  It avoids the memcpy and skb->head allocation for small packets which
    improves performance by about 5% in my tests.
2.  It avoids the memcpy, skb->head allocation, and eth_get_headlen
    for larger packets improving performance by about 10% in my tests.
3.  For VXLAN packets it allows the full header to be in skb->data which
    improves the performance by as much as 30% in some of my tests.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

...

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Alexander Duyck 2017-01-17 08:37:13 -08:00 • committed by Jeff Kirsher

parent 2ccdf26ff6

commit 6f429223b3

1 changed files with 48 additions and 1 deletions

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49

drivers/net/ethernet/intel/ixgbe/ixgbe_main.c

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