drivers/net/ethernet/mellanox/mlx5/core/mcg.c

   1 /*
   2  * Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  */
  32
  33 #include <linux/kernel.h>
  34 #include <linux/module.h>
  35 #include <linux/mlx5/driver.h>
  36 #include <linux/mlx5/cmd.h>
  37 #include <rdma/ib_verbs.h>
  38 #include "mlx5_core.h"
  39
  40 int mlx5_core_attach_mcg(struct mlx5_core_dev *dev, union ib_gid *mgid, u32 qpn)
  41 {
  42         u32 out[MLX5_ST_SZ_DW(attach_to_mcg_out)] = {0};
  43         u32 in[MLX5_ST_SZ_DW(attach_to_mcg_in)]   = {0};
  44         void *gid;
  45
  46         MLX5_SET(attach_to_mcg_in, in, opcode, MLX5_CMD_OP_ATTACH_TO_MCG);
  47         MLX5_SET(attach_to_mcg_in, in, qpn, qpn);
  48         gid = MLX5_ADDR_OF(attach_to_mcg_in, in, multicast_gid);
  49         memcpy(gid, mgid, sizeof(*mgid));
  50         return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
  51 }
  52 EXPORT_SYMBOL(mlx5_core_attach_mcg);
  53
  54 int mlx5_core_detach_mcg(struct mlx5_core_dev *dev, union ib_gid *mgid, u32 qpn)
  55 {
  56         u32 out[MLX5_ST_SZ_DW(detach_from_mcg_out)] = {0};
  57         u32 in[MLX5_ST_SZ_DW(detach_from_mcg_in)]   = {0};
  58         void *gid;
  59
  60         MLX5_SET(detach_from_mcg_in, in, opcode, MLX5_CMD_OP_DETACH_FROM_MCG);
  61         MLX5_SET(detach_from_mcg_in, in, qpn, qpn);
  62         gid = MLX5_ADDR_OF(detach_from_mcg_in, in, multicast_gid);
  63         memcpy(gid, mgid, sizeof(*mgid));
  64         return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
  65 }
  66 EXPORT_SYMBOL(mlx5_core_detach_mcg);