[Intel-wired-lan] [next PATCH v3 08/15] i40e/i40evf: Do not write to descriptor unless we complete
Bowers, AndrewX
andrewx.bowers at intel.com
Wed Jan 27 18:07:49 UTC 2016
> -----Original Message-----
> From: Intel-wired-lan [mailto:intel-wired-lan-bounces at lists.osuosl.org] On
> Behalf Of Alexander Duyck
> Sent: Sunday, January 24, 2016 9:17 PM
> To: intel-wired-lan at lists.osuosl.org; Kirsher, Jeffrey T
> <jeffrey.t.kirsher at intel.com>
> Subject: [Intel-wired-lan] [next PATCH v3 08/15] i40e/i40evf: Do not write to
> descriptor unless we complete
>
> This patch defers writing to the Tx descriptor bits until we know we have
> successuflly completed a given operation. So for example we defer updating
> the tunnelling portion of the context descriptor until we have fully identified
> the type.
>
> The advantage to this approach is that we can assemble values as we go
> instead of having to try and cludge everything together all at once. As a
> result we can significantly clean up the tunneling configuration for instance as
> we can just do a pointer walk and do the math for the distance between
> each set of points.
>
> Signed-off-by: Alexander Duyck <aduyck at mirantis.com>
> ---
> drivers/net/ethernet/intel/i40e/i40e_txrx.c | 81 +++++++++++++----------
> --
> drivers/net/ethernet/intel/i40evf/i40e_txrx.c | 81 +++++++++++++---------
> ---
> 2 files changed, 84 insertions(+), 78 deletions(-)
Tested-by: Andrew Bowers <andrewx.bowers at intel.com>
Tunnelling, offloads work correctly
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