RDMA/irdma: Do not set IBK_LOCAL_DMA_LKEY for GEN3+

[ Upstream commit eef3ad030b08c0f100cb18de7f604442a1adb8c7 ]

The GEN3 hardware does not appear to support IBK_LOCAL_DMA_LKEY. Attempts
to use it will result in an AE.

Fixes: eb31dfc2b41a ("RDMA/irdma: Restrict Memory Window and CQE Timestamping to GEN3")
Signed-off-by: Jacob Moroni <jmoroni@google.com>
Signed-off-by: Tatyana Nikolova <tatyana.e.nikolova@intel.com>
Link: https://patch.msgid.link/20251125025350.180-8-tatyana.e.nikolova@intel.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/infiniband/hw/irdma/verbs.c b/drivers/infiniband/hw/irdma/verbs.c
index 8c44c3fcf9731e15d47a99029024aa573951bc57..afccd9f08b8a579b2cbdcf117fed7c8d59279010 100644 (file)
--- a/drivers/infiniband/hw/irdma/verbs.c
+++ b/drivers/infiniband/hw/irdma/verbs.c
@@ -27,7 +27,8 @@ static int irdma_query_device(struct ib_device *ibdev,
                        irdma_fw_minor_ver(&rf->sc_dev);
        props->device_cap_flags = IB_DEVICE_MEM_WINDOW |
                                  IB_DEVICE_MEM_MGT_EXTENSIONS;
-       props->kernel_cap_flags = IBK_LOCAL_DMA_LKEY;
+       if (hw_attrs->uk_attrs.hw_rev < IRDMA_GEN_3)
+               props->kernel_cap_flags = IBK_LOCAL_DMA_LKEY;
        props->vendor_id = pcidev->vendor;
        props->vendor_part_id = pcidev->device;