1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause OR GPL-2.0 3 * 4 * Copyright (c) 2004, 2005, Voltaire, Inc. All rights reserved. 5 * Copyright (c) 2005 Intel Corporation. All rights reserved. 6 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. 7 * Copyright (c) 2009 HNR Consulting. All rights reserved. 8 * 9 * This software is available to you under a choice of one of two 10 * licenses. You may choose to be licensed under the terms of the GNU 11 * General Public License (GPL) Version 2, available from the file 12 * COPYING in the main directory of this source tree, or the 13 * OpenIB.org BSD license below: 14 * 15 * Redistribution and use in source and binary forms, with or 16 * without modification, are permitted provided that the following 17 * conditions are met: 18 * 19 * - Redistributions of source code must retain the above 20 * copyright notice, this list of conditions and the following 21 * disclaimer. 22 * 23 * - Redistributions in binary form must reproduce the above 24 * copyright notice, this list of conditions and the following 25 * disclaimer in the documentation and/or other materials 26 * provided with the distribution. 27 * 28 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 29 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 30 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 31 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 32 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 33 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 34 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 35 * SOFTWARE. 36 * 37 * $FreeBSD$ 38 */ 39 40 #ifndef __IB_MAD_PRIV_H__ 41 #define __IB_MAD_PRIV_H__ 42 43 #include <linux/completion.h> 44 #include <linux/err.h> 45 #include <linux/workqueue.h> 46 #include <rdma/ib_mad.h> 47 #include <rdma/ib_smi.h> 48 #include <rdma/opa_smi.h> 49 50 #define IB_MAD_QPS_CORE 2 /* Always QP0 and QP1 as a minimum */ 51 52 /* QP and CQ parameters */ 53 #define IB_MAD_QP_SEND_SIZE 128 54 #define IB_MAD_QP_RECV_SIZE 512 55 #define IB_MAD_QP_MIN_SIZE 64 56 #define IB_MAD_QP_MAX_SIZE 8192 57 #define IB_MAD_SEND_REQ_MAX_SG 2 58 #define IB_MAD_RECV_REQ_MAX_SG 1 59 60 #define IB_MAD_SEND_Q_PSN 0 61 62 /* Registration table sizes */ 63 #define MAX_MGMT_CLASS 80 64 #define MAX_MGMT_VERSION 0x83 65 #define MAX_MGMT_OUI 8 66 #define MAX_MGMT_VENDOR_RANGE2 (IB_MGMT_CLASS_VENDOR_RANGE2_END - \ 67 IB_MGMT_CLASS_VENDOR_RANGE2_START + 1) 68 69 struct ib_mad_list_head { 70 struct list_head list; 71 struct ib_cqe cqe; 72 struct ib_mad_queue *mad_queue; 73 }; 74 75 struct ib_mad_private_header { 76 struct ib_mad_list_head mad_list; 77 struct ib_mad_recv_wc recv_wc; 78 struct ib_wc wc; 79 u64 mapping; 80 } __attribute__ ((packed)); 81 82 struct ib_mad_private { 83 struct ib_mad_private_header header; 84 size_t mad_size; 85 struct ib_grh grh; 86 u8 mad[0]; 87 } __attribute__ ((packed)); 88 89 struct ib_rmpp_segment { 90 struct list_head list; 91 u32 num; 92 u8 data[0]; 93 }; 94 95 struct ib_mad_agent_private { 96 struct list_head agent_list; 97 struct ib_mad_agent agent; 98 struct ib_mad_reg_req *reg_req; 99 struct ib_mad_qp_info *qp_info; 100 101 spinlock_t lock; 102 struct list_head send_list; 103 struct list_head wait_list; 104 struct list_head done_list; 105 struct delayed_work timed_work; 106 unsigned long timeout; 107 struct list_head local_list; 108 struct work_struct local_work; 109 struct list_head rmpp_list; 110 111 atomic_t refcount; 112 struct completion comp; 113 }; 114 115 struct ib_mad_snoop_private { 116 struct ib_mad_agent agent; 117 struct ib_mad_qp_info *qp_info; 118 int snoop_index; 119 int mad_snoop_flags; 120 atomic_t refcount; 121 struct completion comp; 122 }; 123 124 struct ib_mad_send_wr_private { 125 struct ib_mad_list_head mad_list; 126 struct list_head agent_list; 127 struct ib_mad_agent_private *mad_agent_priv; 128 struct ib_mad_send_buf send_buf; 129 u64 header_mapping; 130 u64 payload_mapping; 131 struct ib_ud_wr send_wr; 132 struct ib_sge sg_list[IB_MAD_SEND_REQ_MAX_SG]; 133 __be64 tid; 134 unsigned long timeout; 135 int max_retries; 136 int retries_left; 137 int retry; 138 int refcount; 139 enum ib_wc_status status; 140 141 /* RMPP control */ 142 struct list_head rmpp_list; 143 struct ib_rmpp_segment *last_ack_seg; 144 struct ib_rmpp_segment *cur_seg; 145 int last_ack; 146 int seg_num; 147 int newwin; 148 int pad; 149 }; 150 151 struct ib_mad_local_private { 152 struct list_head completion_list; 153 struct ib_mad_private *mad_priv; 154 struct ib_mad_agent_private *recv_mad_agent; 155 struct ib_mad_send_wr_private *mad_send_wr; 156 size_t return_wc_byte_len; 157 }; 158 159 struct ib_mad_mgmt_method_table { 160 struct ib_mad_agent_private *agent[IB_MGMT_MAX_METHODS]; 161 }; 162 163 struct ib_mad_mgmt_class_table { 164 struct ib_mad_mgmt_method_table *method_table[MAX_MGMT_CLASS]; 165 }; 166 167 struct ib_mad_mgmt_vendor_class { 168 u8 oui[MAX_MGMT_OUI][3]; 169 struct ib_mad_mgmt_method_table *method_table[MAX_MGMT_OUI]; 170 }; 171 172 struct ib_mad_mgmt_vendor_class_table { 173 struct ib_mad_mgmt_vendor_class *vendor_class[MAX_MGMT_VENDOR_RANGE2]; 174 }; 175 176 struct ib_mad_mgmt_version_table { 177 struct ib_mad_mgmt_class_table *class; 178 struct ib_mad_mgmt_vendor_class_table *vendor; 179 }; 180 181 struct ib_mad_queue { 182 spinlock_t lock; 183 struct list_head list; 184 int count; 185 int max_active; 186 struct ib_mad_qp_info *qp_info; 187 }; 188 189 struct ib_mad_qp_info { 190 struct ib_mad_port_private *port_priv; 191 struct ib_qp *qp; 192 struct ib_mad_queue send_queue; 193 struct ib_mad_queue recv_queue; 194 struct list_head overflow_list; 195 spinlock_t snoop_lock; 196 struct ib_mad_snoop_private **snoop_table; 197 int snoop_table_size; 198 atomic_t snoop_count; 199 }; 200 201 struct ib_mad_port_private { 202 struct list_head port_list; 203 struct ib_device *device; 204 int port_num; 205 struct ib_cq *cq; 206 struct ib_pd *pd; 207 208 spinlock_t reg_lock; 209 struct ib_mad_mgmt_version_table version[MAX_MGMT_VERSION]; 210 struct list_head agent_list; 211 struct workqueue_struct *wq; 212 struct ib_mad_qp_info qp_info[IB_MAD_QPS_CORE]; 213 }; 214 215 int ib_send_mad(struct ib_mad_send_wr_private *mad_send_wr); 216 217 struct ib_mad_send_wr_private * 218 ib_find_send_mad(const struct ib_mad_agent_private *mad_agent_priv, 219 const struct ib_mad_recv_wc *mad_recv_wc); 220 221 void ib_mad_complete_send_wr(struct ib_mad_send_wr_private *mad_send_wr, 222 struct ib_mad_send_wc *mad_send_wc); 223 224 void ib_mark_mad_done(struct ib_mad_send_wr_private *mad_send_wr); 225 226 void ib_reset_mad_timeout(struct ib_mad_send_wr_private *mad_send_wr, 227 int timeout_ms); 228 229 #endif /* __IB_MAD_PRIV_H__ */ 230