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[4/6] RDMA/mlx4: Fix uABI structure layouts for 32/64 compat

Message ID 20180320201951.4998-5-jgg@ziepe.ca (mailing list archive)
State Accepted
Delegated to: Jason Gunthorpe
Headers show

Commit Message

Jason Gunthorpe March 20, 2018, 8:19 p.m. UTC 
From: Jason Gunthorpe <jgg@mellanox.com>

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>
---
 include/uapi/rdma/mlx4-abi.h | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/include/uapi/rdma/mlx4-abi.h b/include/uapi/rdma/mlx4-abi.h
index a448abd070526e..50a56aeb1f4179 100644
--- a/include/uapi/rdma/mlx4-abi.h
+++ b/include/uapi/rdma/mlx4-abi.h
@@ -183,6 +183,7 @@  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;
 };