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 45 46 #define PFX "ib_mad: " 47 48 #define IB_MAD_QPS_CORE 2 /* Always QP0 and QP1 as a minimum */ 49 50 /* QP and CQ parameters */ 51 #define IB_MAD_QP_SEND_SIZE 128 52 #define IB_MAD_QP_RECV_SIZE 512 53 #define IB_MAD_QP_MIN_SIZE 64 54 #define IB_MAD_QP_MAX_SIZE 8192 55 #define IB_MAD_SEND_REQ_MAX_SG 2 56 #define IB_MAD_RECV_REQ_MAX_SG 1 57 58 #define IB_MAD_SEND_Q_PSN 0 59 60 /* Registration table sizes */ 61 #define MAX_MGMT_CLASS 80 62 #define MAX_MGMT_VERSION 8 63 #define MAX_MGMT_OUI 8 64 #define MAX_MGMT_VENDOR_RANGE2 (IB_MGMT_CLASS_VENDOR_RANGE2_END - \ 65 IB_MGMT_CLASS_VENDOR_RANGE2_START + 1) 66 67 struct ib_mad_list_head { 68 struct list_head list; 69 struct ib_mad_queue *mad_queue; 70 }; 71 72 struct ib_mad_private_header { 73 struct ib_mad_list_head mad_list; 74 struct ib_mad_recv_wc recv_wc; 75 struct ib_wc wc; 76 u64 mapping; 77 } __attribute__ ((packed)); 78 79 struct ib_mad_private { 80 struct ib_mad_private_header header; 81 struct ib_grh grh; 82 union { 83 struct ib_mad mad; 84 struct ib_rmpp_mad rmpp_mad; 85 struct ib_smp smp; 86 } mad; 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_send_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 }; 157 158 struct ib_mad_mgmt_method_table { 159 struct ib_mad_agent_private *agent[IB_MGMT_MAX_METHODS]; 160 }; 161 162 struct ib_mad_mgmt_class_table { 163 struct ib_mad_mgmt_method_table *method_table[MAX_MGMT_CLASS]; 164 }; 165 166 struct ib_mad_mgmt_vendor_class { 167 u8 oui[MAX_MGMT_OUI][3]; 168 struct ib_mad_mgmt_method_table *method_table[MAX_MGMT_OUI]; 169 }; 170 171 struct ib_mad_mgmt_vendor_class_table { 172 struct ib_mad_mgmt_vendor_class *vendor_class[MAX_MGMT_VENDOR_RANGE2]; 173 }; 174 175 struct ib_mad_mgmt_version_table { 176 struct ib_mad_mgmt_class_table *class; 177 struct ib_mad_mgmt_vendor_class_table *vendor; 178 }; 179 180 struct ib_mad_queue { 181 spinlock_t lock; 182 struct list_head list; 183 int count; 184 int max_active; 185 struct ib_mad_qp_info *qp_info; 186 }; 187 188 struct ib_mad_qp_info { 189 struct ib_mad_port_private *port_priv; 190 struct ib_qp *qp; 191 struct ib_mad_queue send_queue; 192 struct ib_mad_queue recv_queue; 193 struct list_head overflow_list; 194 spinlock_t snoop_lock; 195 struct ib_mad_snoop_private **snoop_table; 196 int snoop_table_size; 197 atomic_t snoop_count; 198 }; 199 200 struct ib_mad_port_private { 201 struct list_head port_list; 202 struct ib_device *device; 203 int port_num; 204 struct ib_cq *cq; 205 struct ib_pd *pd; 206 struct ib_mr *mr; 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 work_struct work; 213 struct ib_mad_qp_info qp_info[IB_MAD_QPS_CORE]; 214 }; 215 216 int ib_send_mad(struct ib_mad_send_wr_private *mad_send_wr); 217 218 struct ib_mad_send_wr_private * 219 ib_find_send_mad(struct ib_mad_agent_private *mad_agent_priv, 220 struct ib_mad_recv_wc *mad_recv_wc); 221 222 void ib_mad_complete_send_wr(struct ib_mad_send_wr_private *mad_send_wr, 223 struct ib_mad_send_wc *mad_send_wc); 224 225 void ib_mark_mad_done(struct ib_mad_send_wr_private *mad_send_wr); 226 227 void ib_reset_mad_timeout(struct ib_mad_send_wr_private *mad_send_wr, 228 int timeout_ms); 229 230 #endif /* __IB_MAD_PRIV_H__ */ 231