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