LXR linux/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
  40int 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}
  52EXPORT_SYMBOL(mlx5_core_attach_mcg);
  53
  54int 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}
  66EXPORT_SYMBOL(mlx5_core_detach_mcg);
  67