1 /* 2 * Copyright (c) 2013, Mellanox Technologies inc. 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 struct mlx5_attach_mcg_mbox_in { 41 struct mlx5_inbox_hdr hdr; 42 __be32 qpn; 43 __be32 rsvd; 44 u8 gid[16]; 45 }; 46 47 struct mlx5_attach_mcg_mbox_out { 48 struct mlx5_outbox_hdr hdr; 49 u8 rsvf[8]; 50 }; 51 52 struct mlx5_detach_mcg_mbox_in { 53 struct mlx5_inbox_hdr hdr; 54 __be32 qpn; 55 __be32 rsvd; 56 u8 gid[16]; 57 }; 58 59 struct mlx5_detach_mcg_mbox_out { 60 struct mlx5_outbox_hdr hdr; 61 u8 rsvf[8]; 62 }; 63 64 int mlx5_core_attach_mcg(struct mlx5_core_dev *dev, union ib_gid *mgid, u32 qpn) 65 { 66 struct mlx5_attach_mcg_mbox_in in; 67 struct mlx5_attach_mcg_mbox_out out; 68 int err; 69 70 memset(&in, 0, sizeof(in)); 71 memset(&out, 0, sizeof(out)); 72 in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_ATTACH_TO_MCG); 73 memcpy(in.gid, mgid, sizeof(*mgid)); 74 in.qpn = cpu_to_be32(qpn); 75 err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out)); 76 if (err) 77 return err; 78 79 if (out.hdr.status) 80 err = mlx5_cmd_status_to_err(&out.hdr); 81 82 return err; 83 } 84 EXPORT_SYMBOL(mlx5_core_attach_mcg); 85 86 int mlx5_core_detach_mcg(struct mlx5_core_dev *dev, union ib_gid *mgid, u32 qpn) 87 { 88 struct mlx5_detach_mcg_mbox_in in; 89 struct mlx5_detach_mcg_mbox_out out; 90 int err; 91 92 memset(&in, 0, sizeof(in)); 93 memset(&out, 0, sizeof(out)); 94 in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DETACH_FROM_MCG); 95 memcpy(in.gid, mgid, sizeof(*mgid)); 96 in.qpn = cpu_to_be32(qpn); 97 err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out)); 98 if (err) 99 return err; 100 101 if (out.hdr.status) 102 err = mlx5_cmd_status_to_err(&out.hdr); 103 104 return err; 105 } 106 EXPORT_SYMBOL(mlx5_core_detach_mcg); 107