From: Jason Gunthorpe <jgg@mellanox.com>
Date: Tue, 20 Mar 2018 14:19:49 -0600
Subject: RDMA/mlx4: Fix uABI structure layouts for 32/64 compat
Patch-mainline: v4.17-rc1
Git-commit: 366380a0c835b742da64ae2f800c65fa87692683
References: bsc#1071218

rss_caps in struct mlx4_uverbs_ex_query_device_resp is misaligned on
32 bit compared to 64 bit, add explicit padding.

The rss caps were introduced recently and are very rarely used in user
space, mainly for DPDK.

We don't expect there to be a real 32 bit user, so this change is done
without compat considerations.

Fixes: 09d208b258a2 ("IB/mlx4: Add report for RSS capabilities by vendor channel")
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 include/uapi/rdma/mlx4-abi.h |    1 +
 1 file changed, 1 insertion(+)

--- a/include/uapi/rdma/mlx4-abi.h
+++ b/include/uapi/rdma/mlx4-abi.h
@@ -182,6 +182,7 @@ struct mlx4_uverbs_ex_query_device_resp
 	__u32			response_length;
 	__u64			hca_core_clock_offset;
 	__u32			max_inl_recv_sz;
+	__u32			reserved;
 	struct mlx4_ib_rss_caps	rss_caps;
 	struct mlx4_ib_tso_caps tso_caps;
 };