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 work_struct timeout_work; 106 struct timer_list timeout_timer; 107 unsigned long timeout; 108 struct list_head local_list; 109 struct work_struct local_work; 110 struct list_head rmpp_list; 111 112 atomic_t refcount; 113 struct completion comp; 114 }; 115 116 struct ib_mad_snoop_private { 117 struct ib_mad_agent agent; 118 struct ib_mad_qp_info *qp_info; 119 int snoop_index; 120 int mad_snoop_flags; 121 atomic_t refcount; 122 struct completion comp; 123 }; 124 125 struct ib_mad_send_wr_private { 126 struct ib_mad_list_head mad_list; 127 struct list_head agent_list; 128 struct ib_mad_agent_private *mad_agent_priv; 129 struct ib_mad_send_buf send_buf; 130 u64 header_mapping; 131 u64 payload_mapping; 132 struct ib_send_wr send_wr; 133 struct ib_sge sg_list[IB_MAD_SEND_REQ_MAX_SG]; 134 __be64 tid; 135 unsigned long timeout; 136 int max_retries; 137 int retries_left; 138 int retry; 139 int refcount; 140 enum ib_wc_status status; 141 142 /* RMPP control */ 143 struct list_head rmpp_list; 144 struct ib_rmpp_segment *last_ack_seg; 145 struct ib_rmpp_segment *cur_seg; 146 int last_ack; 147 int seg_num; 148 int newwin; 149 int pad; 150 }; 151 152 struct ib_mad_local_private { 153 struct list_head completion_list; 154 struct ib_mad_private *mad_priv; 155 struct ib_mad_agent_private *recv_mad_agent; 156 struct ib_mad_send_wr_private *mad_send_wr; 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 struct ib_mr *mr; 208 209 spinlock_t reg_lock; 210 struct ib_mad_mgmt_version_table version[MAX_MGMT_VERSION]; 211 struct list_head agent_list; 212 struct workqueue_struct *wq; 213 struct work_struct work; 214 struct ib_mad_qp_info qp_info[IB_MAD_QPS_CORE]; 215 }; 216 217 int ib_send_mad(struct ib_mad_send_wr_private *mad_send_wr); 218 219 struct ib_mad_send_wr_private * 220 ib_find_send_mad(struct ib_mad_agent_private *mad_agent_priv, 221 struct ib_mad_recv_wc *mad_recv_wc); 222 223 void ib_mad_complete_send_wr(struct ib_mad_send_wr_private *mad_send_wr, 224 struct ib_mad_send_wc *mad_send_wc); 225 226 void ib_mark_mad_done(struct ib_mad_send_wr_private *mad_send_wr); 227 228 void ib_reset_mad_timeout(struct ib_mad_send_wr_private *mad_send_wr, 229 int timeout_ms); 230 231 #endif /* __IB_MAD_PRIV_H__ */ 232