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ice: implement configurable header split for regular Rx

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Add second page_pool for header buffers to each Rx queue and ability
to toggle the header split on/off using Ethtool (default to off to
match the current behaviour).
Unlike idpf, all HW backed up by ice doesn't require any W/As and
correctly splits all types of packets as configured: after L4 headers
for TCP/UDP/SCTP, after L3 headers for other IPv4/IPv6 frames, after
the Ethernet header otherwise (in case of tunneling, same as above,
but after innermost headers).
This doesn't affect the XSk path as there are no benefits of having
it there.

Signed-off-by: Alexander Lobakin <aleksander.lobakin@intel.com>
Tested-by: Alexander Nowlin <alexander.nowlin@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
This commit is contained in:
Alexander Lobakin 2025-10-06 18:20:53 +02:00 • committed by Tony Nguyen
commit 8adfcfd6a2
6 changed files with 168 additions and 36 deletions
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