Re: [net-next v3 05/12] net: bnxt: Use dma_unmap_len for TX completion unmapping

[Pavan Chebbi]

On Thu, Mar 19, 2026 at 12:43 AM Joe Damato <joe@xxxxxxx> wrote:
>
> Store the DMA mapping length in each TX buffer descriptor via
> dma_unmap_len_set at submit time, and use dma_unmap_len at completion
> time.
>
> This is a no-op for normal packets but prepares for software USO,
> where header BDs set dma_unmap_len to 0 because the header buffer
> is unmapped collectively rather than per-segment.
>
> Suggested-by: Jakub Kicinski <kuba@xxxxxxxxxx>
> Signed-off-by: Joe Damato <joe@xxxxxxx>
> ---
> rfcv2:
>   - Use some local variables to shortern long lines. No functional change from
>     rfcv1.
>
>  drivers/net/ethernet/broadcom/bnxt/bnxt.c | 63 ++++++++++++++---------
>  1 file changed, 40 insertions(+), 23 deletions(-)
>

LGTM.
Reviewed-by: Pavan Chebbi <pavan.chebbi@xxxxxxxxxxxx>
Thanks.

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