RE: [Intel-wired-lan] [PATCH iwl-next v5 06/15] libie: add bookkeeping support for control queue messages

From: R, Bharath

Date: Tue Feb 24 2026 - 02:13:20 EST




> -----Original Message-----
> From: Intel-wired-lan <intel-wired-lan-bounces@xxxxxxxxxx> On Behalf Of
> Larysa Zaremba
> Sent: 17 November 2025 19:19
> To: intel-wired-lan@xxxxxxxxxxxxxxxx; Nguyen, Anthony L
> <anthony.l.nguyen@xxxxxxxxx>
> Cc: Lobakin, Aleksander <aleksander.lobakin@xxxxxxxxx>; Samudrala, Sridhar
> <sridhar.samudrala@xxxxxxxxx>; Singhai, Anjali <anjali.singhai@xxxxxxxxx>;
> Michal Swiatkowski <michal.swiatkowski@xxxxxxxxxxxxxxx>; Zaremba, Larysa
> <larysa.zaremba@xxxxxxxxx>; Fijalkowski, Maciej
> <maciej.fijalkowski@xxxxxxxxx>; Tantilov, Emil S <emil.s.tantilov@xxxxxxxxx>;
> Chittim, Madhu <madhu.chittim@xxxxxxxxx>; Hay, Joshua A
> <joshua.a.hay@xxxxxxxxx>; Keller, Jacob E <jacob.e.keller@xxxxxxxxx>;
> Shanmugam, Jayaprakash <jayaprakash.shanmugam@xxxxxxxxx>;
> Wochtman, Natalia <natalia.wochtman@xxxxxxxxx>; Jiri Pirko
> <jiri@xxxxxxxxxxx>; David S. Miller <davem@xxxxxxxxxxxxx>; Eric Dumazet
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> <pabeni@xxxxxxxxxx>; Simon Horman <horms@xxxxxxxxxx>; Jonathan
> Corbet <corbet@xxxxxxx>; Richard Cochran <richardcochran@xxxxxxxxx>;
> Kitszel, Przemyslaw <przemyslaw.kitszel@xxxxxxxxx>; Andrew Lunn
> <andrew+netdev@xxxxxxx>; netdev@xxxxxxxxxxxxxxx; linux-
> doc@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; Burra, Phani R
> <phani.r.burra@xxxxxxxxx>
> Subject: [Intel-wired-lan] [PATCH iwl-next v5 06/15] libie: add bookkeeping
> support for control queue messages
>
> From: Phani R Burra <phani.r.burra@xxxxxxxxx>
>
> All send control queue messages are allocated/freed in libie itself and tracked
> with the unique transaction (Xn) ids until they receive response or time out.
> Responses can be received out of order, therefore transactions are stored in an
> array and tracked though a bitmap.
>
> Pre-allocated DMA memory is used where possible. It reduces the driver
> overhead in handling memory allocation/free and message timeouts.
>
> Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@xxxxxxxxx>
> Signed-off-by: Phani R Burra <phani.r.burra@xxxxxxxxx>
> Co-developed-by: Victor Raj <victor.raj@xxxxxxxxx>
> Signed-off-by: Victor Raj <victor.raj@xxxxxxxxx>
> Co-developed-by: Pavan Kumar Linga <pavan.kumar.linga@xxxxxxxxx>
> Signed-off-by: Pavan Kumar Linga <pavan.kumar.linga@xxxxxxxxx>
> Co-developed-by: Larysa Zaremba <larysa.zaremba@xxxxxxxxx>
> Signed-off-by: Larysa Zaremba <larysa.zaremba@xxxxxxxxx>
> ---
> drivers/net/ethernet/intel/libie/controlq.c | 579 ++++++++++++++++++++
> include/linux/intel/libie/controlq.h | 172 ++++++
> 2 files changed, 751 insertions(+)
>

Tested-by: Bharath R <Bharath.r@xxxxxxxxx>