gve: add struct gve_device_info to hold device properties

In the current AdminQ mode, device properties are written into
struct gve_device_descriptor that is allocated in shared memory
between the driver and device. In the upcoming MailboxQ mode,
these properties will be returned in the response of a mailbox
message. Hence, add struct gve_device_info as the structure that
holds all the properties that are negotiated with the device in
either mode.

Change the AdminQ mode method gve_adminq_describe_device()
and its children to fill up device information into this newly
introduced struct gve_device_info. Move a few helper functions
and code that set device properties in the priv structure into
gve_init_priv(). So now gve_init_priv() calls/does the following:

- gve_set_mtu()
- gve_set_mac()
- gve_set_queue_properties()
- gve_set_buf_sizes()
- set flow steering and RSS properties
- set other priv properties

When MailboxQ support is added, device information will be filled
into the same structure and the same gve_init_priv() path would be
used to set device properties to ensure common code reusage.

Most of these changes are refactors only, except for one:
with the introduction of the central struct gve_device_info,
in AdminQ mode, gve_set_mtu() now validates the final max mtu:
the mtu from the device descriptor, or the jumbo frames device
option value when it is present. Previously only the descriptor
mtu was validated. This sets up the driver nicely for the
MailboxQ mode where both the default and the maximum mtu are
provided at once and they are validated in gve_set_mtu().

Reviewed-by: Willem de Bruijn <willemb@google.com>
Reviewed-by: Jordan Rhee <jordanrhee@google.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Signed-off-by: Harshitha Ramamurthy <hramamurthy@google.com>
Link: https://patch.msgid.link/20260930190428.1130007-2-hramamurthy@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

0 files changed, 0 insertions, 0 deletions