[PATCH net-next v4 0/3] net: stmmac: Introduce hw queue priority offload

[Lorenzo Bianconi]

> Implement the offload of the tc mqprio hw queue priority in the stmmac
> driver. This feature requires the mqprio to be configured in channel
> mode.
> Do not overwrite real_num_tx_queues configured by the qdisc in
> stmmac_hw_setup().
> 
> The misbehaviour has been reported by Shashank and the patch has been
> tested on a Qualcomm RB3-Gen2 board.
> 
> ---
> Changes in v4:
> - Move real_num_tx_queues fix before mqprio offload patch in order to
>   allow easy backporting.
> - Add patch 'net: stmmac: set real_num_tx_queues from max(offset +
>   count)' to fix the real_num_tx_queues configuration.
> - Link to v3: https://lore.kernel.org/r/20260928-stmmac-mqprio-prio-offload-v3-0-abbe181f5024@oss.qualcomm.com
> 
> Changes in v3:
> - Fix cbs overwriting removing mqprio qdisc configured in dcb mode.
> - Return an error in stmmac_reinit_queues() if configured number of tx
>   queues is lower than xmit_qdisc.num_tx_queues and mqprio offloading is
>   enabled.
> - Link to v2: https://lore.kernel.org/r/20260924-stmmac-mqprio-prio-offload-v2-0-fdd8b69efccf@oss.qualcomm.com
> 
> Changes in v2:
> - Forbid cbs queue offload if mqprio is already enabled.
> - SP requires 1:1 TC to TXQ map.
> - Fix the real_num_tx_queue overwrite during device open.
> - Require the qdisc to be configured in channel mode to enable hw queue
>   priority offload in order to not introduce any regression in the
>   previous driver behaviour.
> - Link to v1: https://lore.kernel.org/r/20260918-stmmac-mqprio-prio-offload-v1-1-5328157fcb58@oss.qualcomm.com
> 
> ---
> Lorenzo Bianconi (3):
>       net: stmmac: set real_num_tx_queues to max(offset + count)
>       net: stmmac: align real_num_tx_queues to mqprio configuration
>       net: stmmac: add tc mqprio hw queue priority offload

I will fix sashiko's reported issues in v5.

Regards,
Lorenzo

> 
>  drivers/net/ethernet/stmicro/stmmac/stmmac.h      |   9 ++
>  drivers/net/ethernet/stmicro/stmmac/stmmac_fpe.c  |   2 +-
>  drivers/net/ethernet/stmicro/stmmac/stmmac_main.c |  37 ++++--
>  drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c   | 147 ++++++++++++++++++++--
>  4 files changed, 172 insertions(+), 23 deletions(-)
> ---
> base-commit: eb0c18404c8943356f4aa164e5db9067b79ea93c
> change-id: 20260918-stmmac-mqprio-prio-offload-3d82d87f7bc8
> 
> Best regards,
> -- 
> Lorenzo Bianconi <lorenzo.bianconi at oss.qualcomm.com>
> 
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