gve: Add adminq lock for queues creation and destruction

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Adminq commands for queues creation and destruction were not
consistently protected by the driver's adminq_lock. This was previously
benign as these operations were always initiated from contexts holding
kernel-level locks (e.g., rtnl_lock, netdev_lock), which provided
serialization.

Upcoming PTP aux_work will issue adminq commands directly from the
driver to read the NIC clock, without such kernel lock protection.
To prevent race conditions with this new PTP work, this patch ensures
the adminq_lock is held during queues creation and destruction.

Signed-off-by: Ziwei Xiao <ziweixiao@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Harshitha Ramamurthy <hramamurthy@google.com>
Link: https://patch.msgid.link/20250614000754.164827-5-hramamurthy@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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This commit is contained in:

Ziwei Xiao 2025-06-14 00:07:50 +00:00 • committed by Jakub Kicinski

parent acd1638052

commit 21235ad935

1 changed files with 36 additions and 11 deletions

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47

drivers/net/ethernet/google/gve/gve_adminq.c

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