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RDMA/mlx5: Return ECE DC support

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The DC QPs are many-to-one QP types that means that first connection will
establish ECE options that coming connections should follow.  Due to this
property, the ECE code was removed between first [1] and second [2] ECE
submissions.

This patch returns the dropped code, because ECE is a property of a
connection and like any other connection users are needed to manage this
data. Allow them to set ECE parameter for DC too and avoid need of having
compatibility flag for the DC ECE.

[1]
https://lore.kernel.org/linux-rdma/20200523132243.817936-1-leon@kernel.org/
[2]
https://lore.kernel.org/linux-rdma/20200525174401.71152-1-leon@kernel.org/

Link: https://lore.kernel.org/r/20200602125548.172654-4-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Leon Romanovsky
2020-06-02 15:55:48 +03:00
committed by Jason Gunthorpe
parent 92cd667c0e
commit a645a89d9a
2 changed files with 34 additions and 16 deletions
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5
include/linux/mlx5/mlx5_ifc.h
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@@ -3690,7 +3690,8 @@ struct mlx5_ifc_dctc_bits {
u8 ecn[0x2];
u8 dscp[0x6];
u8 reserved_at_1c0[0x40];
u8 reserved_at_1c0[0x20];
u8 ece[0x20];
};
enum {
@@ -7940,7 +7941,7 @@ struct mlx5_ifc_create_dct_out_bits {
u8 reserved_at_40[0x8];
u8 dctn[0x18];
u8 reserved_at_60[0x20];
u8 ece[0x20];
};
struct mlx5_ifc_create_dct_in_bits {