This is a note to let you know that I've just added the patch titled
net/mlx5: Define interface bits for fencing UMR wqe
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-mlx5-define-interface-bits-for-fencing-umr-wqe.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 1410a90ae449061b7e1ae19d275148f36948801b Mon Sep 17 00:00:00 2001
From: Max Gurtovoy <maxg@xxxxxxxxxxxx>
Date: Sun, 28 May 2017 10:53:10 +0300
Subject: net/mlx5: Define interface bits for fencing UMR wqe
From: Max Gurtovoy <maxg@xxxxxxxxxxxx>
commit 1410a90ae449061b7e1ae19d275148f36948801b upstream.
HW can implement UMR wqe re-transmission in various ways.
Thus, add HCA cap to distinguish the needed fence for UMR to make
sure that the wqe wouldn't fail on mkey checks.
Signed-off-by: Max Gurtovoy <maxg@xxxxxxxxxxxx>
Acked-by: Leon Romanovsky <leon@xxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Doug Ledford <dledford@xxxxxxxxxx>
Cc: Marta Rybczynska <mrybczyn@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
include/linux/mlx5/mlx5_ifc.h | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
--- a/include/linux/mlx5/mlx5_ifc.h
+++ b/include/linux/mlx5/mlx5_ifc.h
@@ -737,6 +737,12 @@ enum {
MLX5_CAP_PORT_TYPE_ETH = 0x1,
};
+enum {
+ MLX5_CAP_UMR_FENCE_STRONG = 0x0,
+ MLX5_CAP_UMR_FENCE_SMALL = 0x1,
+ MLX5_CAP_UMR_FENCE_NONE = 0x2,
+};
+
struct mlx5_ifc_cmd_hca_cap_bits {
u8 reserved_at_0[0x80];
@@ -838,7 +844,9 @@ struct mlx5_ifc_cmd_hca_cap_bits {
u8 striding_rq[0x1];
u8 reserved_at_201[0x2];
u8 ipoib_basic_offloads[0x1];
- u8 reserved_at_205[0xa];
+ u8 reserved_at_205[0x5];
+ u8 umr_fence[0x2];
+ u8 reserved_at_20c[0x3];
u8 drain_sigerr[0x1];
u8 cmdif_checksum[0x2];
u8 sigerr_cqe[0x1];
Patches currently in stable-queue which might be from maxg@xxxxxxxxxxxx are
queue-4.9/net-mlx5-define-interface-bits-for-fencing-umr-wqe.patch
queue-4.9/rdma-mlx5-set-umr-wqe-fence-according-to-hca-cap.patch