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From: Leon Romanovsky <leon@kernel.org>
To: Doug Ledford <dledford@redhat.com>, Jason Gunthorpe <jgg@mellanox.com>
Cc: Leon Romanovsky <leonro@mellanox.com>, linux-rdma@vger.kernel.org
Subject: [PATCH rdma-next v1 7/9] RDMA/mlx5: Advertise ECE support
Date: Sat, 23 May 2020 16:22:41 +0300
Message-ID: <20200523132243.817936-8-leon@kernel.org> (raw)
In-Reply-To: <20200523132243.817936-1-leon@kernel.org>

From: Leon Romanovsky <leonro@mellanox.com>

The ECE bits are configured through create_qp and modify_qp commands.
While the create_qp() can be easily extended, it is not an easy task
for the modify_qp().

The new bit in the comp_mask is needed to mark that kernel supports
ECE and can receive data instead of "reserved" field in the
struct mlx5_ib_modify_qp.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
---
 drivers/infiniband/hw/mlx5/main.c | 3 +++
 include/uapi/rdma/mlx5-abi.h      | 1 +
 2 files changed, 4 insertions(+)

diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index 6094ab2f4cd7..570c519ca530 100644
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -1971,6 +1971,9 @@ static int mlx5_ib_alloc_ucontext(struct ib_ucontext *uctx,
 		resp.response_length += sizeof(resp.dump_fill_mkey);
 	}
 
+	if (MLX5_CAP_GEN(dev->mdev, ece_support))
+		resp.comp_mask |= MLX5_IB_ALLOC_UCONTEXT_RESP_MASK_ECE;
+
 	err = ib_copy_to_udata(udata, &resp, resp.response_length);
 	if (err)
 		goto out_mdev;
diff --git a/include/uapi/rdma/mlx5-abi.h b/include/uapi/rdma/mlx5-abi.h
index bc9d9e3cb369..90ea1e5aa291 100644
--- a/include/uapi/rdma/mlx5-abi.h
+++ b/include/uapi/rdma/mlx5-abi.h
@@ -100,6 +100,7 @@ struct mlx5_ib_alloc_ucontext_req_v2 {
 enum mlx5_ib_alloc_ucontext_resp_mask {
 	MLX5_IB_ALLOC_UCONTEXT_RESP_MASK_CORE_CLOCK_OFFSET = 1UL << 0,
 	MLX5_IB_ALLOC_UCONTEXT_RESP_MASK_DUMP_FILL_MKEY    = 1UL << 1,
+	MLX5_IB_ALLOC_UCONTEXT_RESP_MASK_ECE               = 1UL << 2,
 };
 
 enum mlx5_user_cmds_supp_uhw {
-- 
2.26.2


  parent reply index

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-23 13:22 [PATCH rdma-next v1 0/9] Driver part of the ECE Leon Romanovsky
2020-05-23 13:22 ` [PATCH mlx5-next v1 1/9] net/mlx5: Add ability to read and write ECE options Leon Romanovsky
2020-05-23 13:22 ` [PATCH rdma-next v1 2/9] RDMA/mlx5: Get ECE options from FW during create QP Leon Romanovsky
2020-05-25 18:17   ` Jason Gunthorpe
2020-05-25 18:27     ` Leon Romanovsky
2020-05-23 13:22 ` [PATCH rdma-next v1 3/9] RDMA/mlx5: Set ECE options during QP create Leon Romanovsky
2020-05-23 13:22 ` [PATCH rdma-next v1 4/9] RDMA/mlx5: Use direct modify QP implementation Leon Romanovsky
2020-05-23 13:22 ` [PATCH rdma-next v1 5/9] RDMA/mlx5: Remove manually crafted QP context the query call Leon Romanovsky
2020-05-23 13:22 ` [PATCH rdma-next v1 6/9] RDMA/mlx5: Convert modify QP to use MLX5_SET macros Leon Romanovsky
2020-05-23 13:22 ` Leon Romanovsky [this message]
2020-05-25 18:18   ` [PATCH rdma-next v1 7/9] RDMA/mlx5: Advertise ECE support Jason Gunthorpe
2020-05-25 18:29     ` Leon Romanovsky
2020-05-23 13:22 ` [PATCH rdma-next v1 8/9] RDMA/mlx5: Set ECE options during modify QP Leon Romanovsky
2020-05-23 13:22 ` [PATCH rdma-next v1 9/9] RDMA/mlx5: Return ECE data after " Leon Romanovsky

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