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net/mlx5: DR, Check force-loopback RC QP capability independently from RoCE
commitc7dd225bc2
upstream. SW Steering uses RC QP for writing STEs to ICM. This writingis done in LB (loopback), and FL (force-loopback) QP is preferred for performance. FL is available when RoCE is enabled or disabled based on RoCE caps. This patch adds reading of FL capability from HCA caps in addition to the existing reading from RoCE caps, thus fixing the case where we didn't have loopback enabled when RoCE was disabled. Fixes:7304d603a5
("net/mlx5: DR, Add support for force-loopback QP") Signed-off-by: Itamar Gozlan <igozlan@nvidia.com> Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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2 changed files with 6 additions and 2 deletions
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@ -117,6 +117,8 @@ int mlx5dr_cmd_query_device(struct mlx5_core_dev *mdev,
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caps->gvmi = MLX5_CAP_GEN(mdev, vhca_id);
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caps->flex_protocols = MLX5_CAP_GEN(mdev, flex_parser_protocols);
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caps->sw_format_ver = MLX5_CAP_GEN(mdev, steering_format_version);
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caps->roce_caps.fl_rc_qp_when_roce_disabled =
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MLX5_CAP_GEN(mdev, fl_rc_qp_when_roce_disabled);
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if (MLX5_CAP_GEN(mdev, roce)) {
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err = dr_cmd_query_nic_vport_roce_en(mdev, 0, &roce_en);
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@ -124,7 +126,7 @@ int mlx5dr_cmd_query_device(struct mlx5_core_dev *mdev,
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return err;
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caps->roce_caps.roce_en = roce_en;
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caps->roce_caps.fl_rc_qp_when_roce_disabled =
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caps->roce_caps.fl_rc_qp_when_roce_disabled |=
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MLX5_CAP_ROCE(mdev, fl_rc_qp_when_roce_disabled);
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caps->roce_caps.fl_rc_qp_when_roce_enabled =
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MLX5_CAP_ROCE(mdev, fl_rc_qp_when_roce_enabled);
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@ -1513,7 +1513,9 @@ struct mlx5_ifc_cmd_hca_cap_bits {
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u8 rc[0x1];
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u8 uar_4k[0x1];
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u8 reserved_at_241[0x9];
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u8 reserved_at_241[0x7];
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u8 fl_rc_qp_when_roce_disabled[0x1];
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u8 regexp_params[0x1];
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u8 uar_sz[0x6];
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u8 reserved_at_248[0x2];
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u8 umem_uid_0[0x1];
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