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[ Upstream commit 892ede5a77f337831609fb9c248ac60948061894 ] Fix possible RMT overflow: Use the correct netdev size. Don't allow adjusted user contexts to go negative. Fix QOS calculation: Send kernel context count as an argument since dd->n_krcv_queues is not yet set up in earliest call. Do not include the control context in the QOS calculation. Use the same sized variable to find the max of krcvq[] entries. Update the RMT count explanation to make more sense. Signed-off-by: Dean Luick <dean.luick@cornelisnetworks.com> Signed-off-by: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com> Link: https://lore.kernel.org/r/167329106946.1472990.18385495251650939054.stgit@awfm-02.cornelisnetworks.com Signed-off-by: Leon Romanovsky <leon@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>