IB/mlx5: Add CREATE_PSV/DESTROY_PSV for devx interface (8b38c538) · Commits · 戴 / test

Limit the number of PSV's created through devx to 1, to create a symmetry between create/destroy cmds. In the kernel, one can create up to 4 PSV's using CREATE_PSV cmd but the destruction is one by one. Add a protection for this a-symmetric definition for devx. Link: https://lore.kernel.org/r/20190723070412.6385-1-leon@kernel.org Signed-off-by:

Max Gurtovoy <maxg@mellanox.com> Signed-off-by:

Leon Romanovsky <leonro@mellanox.com> Signed-off-by:

Jason Gunthorpe <jgg@mellanox.com>

drivers/infiniband/hw/mlx5/devx.c

+14 −0

Original line number	Diff line number	Diff line
		@@ -776,6 +776,14 @@ static bool devx_is_obj_create_cmd(const void in, u16 opcode)
		return true;
		return false;
		}
		case MLX5_CMD_OP_CREATE_PSV:
		{
		u8 num_psv = MLX5_GET(create_psv_in, in, num_psv);

		if (num_psv == 1)
		return true;
		return false;
		}
		default:
		return false;
		}
		@@ -1215,6 +1223,12 @@ static void devx_obj_build_destroy_cmd(void in, void out, void *din,
		case MLX5_CMD_OP_ALLOC_XRCD:
		MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DEALLOC_XRCD);
		break;
		case MLX5_CMD_OP_CREATE_PSV:
		MLX5_SET(general_obj_in_cmd_hdr, din, opcode,
		MLX5_CMD_OP_DESTROY_PSV);
		MLX5_SET(destroy_psv_in, din, psvn,
		MLX5_GET(create_psv_out, out, psv0_index));
		break;
		default:
		/* The entry must match to one of the devx_is_obj_create_cmd */
		WARN_ON(true);

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