mlx5/core/mcg.c

0001 /*
0002  * Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved.
0003  *
0004  * This software is available to you under a choice of one of two
0005  * licenses.  You may choose to be licensed under the terms of the GNU
0006  * General Public License (GPL) Version 2, available from the file
0007  * COPYING in the main directory of this source tree, or the
0008  * OpenIB.org BSD license below:
0009  *
0010  *     Redistribution and use in source and binary forms, with or
0011  *     without modification, are permitted provided that the following
0012  *     conditions are met:
0013  *
0014  *      - Redistributions of source code must retain the above
0015  *        copyright notice, this list of conditions and the following
0016  *        disclaimer.
0017  *
0018  *      - Redistributions in binary form must reproduce the above
0019  *        copyright notice, this list of conditions and the following
0020  *        disclaimer in the documentation and/or other materials
0021  *        provided with the distribution.
0022  *
0023  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
0024  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
0025  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
0026  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
0027  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
0028  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
0029  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
0030  * SOFTWARE.
0031  */
0032
0033 #include <linux/kernel.h>
0034 #include <linux/mlx5/driver.h>
0035 #include <rdma/ib_verbs.h>
0036 #include "mlx5_core.h"
0037
0038 int mlx5_core_attach_mcg(struct mlx5_core_dev *dev, union ib_gid *mgid, u32 qpn)
0039 {
0040     u32 in[MLX5_ST_SZ_DW(attach_to_mcg_in)] = {};
0041     void *gid;
0042
0043     MLX5_SET(attach_to_mcg_in, in, opcode, MLX5_CMD_OP_ATTACH_TO_MCG);
0044     MLX5_SET(attach_to_mcg_in, in, qpn, qpn);
0045     gid = MLX5_ADDR_OF(attach_to_mcg_in, in, multicast_gid);
0046     memcpy(gid, mgid, sizeof(*mgid));
0047     return mlx5_cmd_exec_in(dev, attach_to_mcg, in);
0048 }
0049 EXPORT_SYMBOL(mlx5_core_attach_mcg);
0050
0051 int mlx5_core_detach_mcg(struct mlx5_core_dev *dev, union ib_gid *mgid, u32 qpn)
0052 {
0053     u32 in[MLX5_ST_SZ_DW(detach_from_mcg_in)] = {};
0054     void *gid;
0055
0056     MLX5_SET(detach_from_mcg_in, in, opcode, MLX5_CMD_OP_DETACH_FROM_MCG);
0057     MLX5_SET(detach_from_mcg_in, in, qpn, qpn);
0058     gid = MLX5_ADDR_OF(detach_from_mcg_in, in, multicast_gid);
0059     memcpy(gid, mgid, sizeof(*mgid));
0060     return mlx5_cmd_exec_in(dev, detach_from_mcg, in);
0061 }
0062 EXPORT_SYMBOL(mlx5_core_detach_mcg);