Merge branch 'gve-improve-rx-buffer-length-management'

Merge branch 'gve-improve-rx-buffer-length-management'

Ankit Garg says:

====================
gve: Improve RX buffer length management

This patch series improves the management of the RX buffer length for
the DQO queue format in the gve driver. The goal is to make RX buffer
length config more explicit, easy to change, and performant by default.

We accomplish that in four patches:

1.  Currently, the buffer length is implicitly coupled with the header
    split setting, which is an unintuitive and restrictive design. The
    first patch decouples the RX buffer length from the header split
    configuration.

2.  The second patch is a preparatory step for third. It converts the XDP
    config verification method to use extack for better error reporting.

3.  The third patch exposes the `rx_buf_len` parameter to userspace via
    ethtool, allowing user to directly view or modify the RX buffer length
    if supported by the device.

4.  The final patch improves the out-of-the-box RX single stream throughput
    by >10%  by changing the driver's default behavior to select the
    maximum supported RX buffer length advertised by the device during
    initialization.
====================

Link: https://patch.msgid.link/20251106192746.243525-1-joshwash@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>