Re: [PATCH iouring] io_uring/zcrx: don't set rx_page_size when not requested

[Jens Axboe <axboe@kernel.dk>]

On Fri, 27 Feb 2026 09:07:45 -0800, Jakub Kicinski wrote:
> The rx_buf_len parameter was recently added to the Rx zero-copy
> implementation. The expectation is that when not set system will
> maintain previous behavior and use the default buffer size (PAGE_SIZE).
> 
> This works correctly at the iouring level, but we don't preserve
> the same "zero means default" semantics when registering the memory
> provider on the netdev. mp_param.rx_page_size is unconditionally
> set to PAGE_SIZE. This causes __net_mp_open_rxq() to check for
> QCFG_RX_PAGE_SIZE support in the driver, and return -EOPNOTSUPP
> for drivers that don't advertise it -- even though the user never
> asked for large buffers.
> 
> [...]

Applied, thanks!

[1/1] io_uring/zcrx: don't set rx_page_size when not requested
      commit: 3d17d76d1ffb139a7492317b196ee03c8eabc9dc

Best regards,
-- 
Jens Axboe