IB/core: Limit DMAC resolution to userspace QPs
Currently ah_attr is initialized by the ib_cm layer for rdma_cm based applications. For RoCE transport ah_attr.roce.dmac is already initialized by ib_cm, rdma_cm either from wc, path record, route resolve, explicit path record setting depending on active or passive side QP. Therefore avoid resolving DMAC for QP of kernel consumers. Signed-off-by: Parav Pandit <parav@mellanox.com> Reviewed-by: Daniel Jurgens <danielj@mellanox.com> Signed-off-by: Leon Romanovsky <leon@kernel.org> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
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