[dpdk-dev] [PATCH v3] net/i40e: do not turn on flexible payload on driver init

[Zhang, Helin]

> -----Original Message-----
> From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Kirill Rybalchenko
> Sent: Tuesday, January 9, 2018 11:37 PM
> To: dev at dpdk.org
> Cc: Rybalchenko, Kirill; Chilikin, Andrey; Xing, Beilei; Wu, Jingjing
> Subject: [dpdk-dev] [PATCH v3] net/i40e: do not turn on flexible payload on
> driver init
> 
> Function i40e_GLQF_reg_init() overwrites global register for flexible payload,
> forcing extraction of first 16 bytes of
> L2/L3/L4 payload to the field vector even if flexible payload is not used by an
> application. Such unconditional turn on of flexible payload effectively disables
> ability to use outer IP Destination address for RSS/FDIR for tunnelled packets,
> as flexible payload overwrites outer IP destination address on the field vector.
> 
> Now flexible payload turned on only when flow director is enabled and
> configured.
> 
> v1:
> Global registers will be set only when payload is enabled.
> They will be reset if payload is disabled or on port reset (uninit).
> 
> v2:
> dev_init and dev_close disable flexible payload by default.
> Flexible payload enabled selectively, only if appropriate PIT is set up. The same
> done for FDIR and for rte_flow API.
> 
> v3:
> Minor fix in comments.
> 
> Signed-off-by: Kirill Rybalchenko <kirill.rybalchenko at intel.com>
Applied to dpdk-next-net-intel, with minor commit log changes.

/Helin