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 #define IB_MAD_QPS_CORE 2 /* Always QP0 and QP1 as a minimum */ 46 47 /* QP and CQ parameters */ 48 #define IB_MAD_QP_SEND_SIZE 128 49 #define IB_MAD_QP_RECV_SIZE 512 50 #define IB_MAD_QP_MIN_SIZE 64 51 #define IB_MAD_QP_MAX_SIZE 8192 52 #define IB_MAD_SEND_REQ_MAX_SG 2 53 #define IB_MAD_RECV_REQ_MAX_SG 1 54 55 #define IB_MAD_SEND_Q_PSN 0 56 57 /* Registration table sizes */ 58 #define MAX_MGMT_CLASS 80 59 #define MAX_MGMT_VERSION 8 60 #define MAX_MGMT_OUI 8 61 #define MAX_MGMT_VENDOR_RANGE2 (IB_MGMT_CLASS_VENDOR_RANGE2_END - \ 62 IB_MGMT_CLASS_VENDOR_RANGE2_START + 1) 63 64 struct ib_mad_list_head { 65 struct list_head list; 66 struct ib_mad_queue *mad_queue; 67 }; 68 69 struct ib_mad_private_header { 70 struct ib_mad_list_head mad_list; 71 struct ib_mad_recv_wc recv_wc; 72 struct ib_wc wc; 73 u64 mapping; 74 } __attribute__ ((packed)); 75 76 struct ib_mad_private { 77 struct ib_mad_private_header header; 78 struct ib_grh grh; 79 union { 80 struct ib_mad mad; 81 struct ib_rmpp_mad rmpp_mad; 82 struct ib_smp smp; 83 } mad; 84 } __attribute__ ((packed)); 85 86 struct ib_rmpp_segment { 87 struct list_head list; 88 u32 num; 89 u8 data[0]; 90 }; 91 92 struct ib_mad_agent_private { 93 struct list_head agent_list; 94 struct ib_mad_agent agent; 95 struct ib_mad_reg_req *reg_req; 96 struct ib_mad_qp_info *qp_info; 97 98 spinlock_t lock; 99 struct list_head send_list; 100 struct list_head wait_list; 101 struct list_head done_list; 102 struct delayed_work timed_work; 103 unsigned long timeout; 104 struct list_head local_list; 105 struct work_struct local_work; 106 struct list_head rmpp_list; 107 108 atomic_t refcount; 109 struct completion comp; 110 }; 111 112 struct ib_mad_snoop_private { 113 struct ib_mad_agent agent; 114 struct ib_mad_qp_info *qp_info; 115 int snoop_index; 116 int mad_snoop_flags; 117 atomic_t refcount; 118 struct completion comp; 119 }; 120 121 struct ib_mad_send_wr_private { 122 struct ib_mad_list_head mad_list; 123 struct list_head agent_list; 124 struct ib_mad_agent_private *mad_agent_priv; 125 struct ib_mad_send_buf send_buf; 126 u64 header_mapping; 127 u64 payload_mapping; 128 struct ib_send_wr send_wr; 129 struct ib_sge sg_list[IB_MAD_SEND_REQ_MAX_SG]; 130 __be64 tid; 131 unsigned long timeout; 132 int max_retries; 133 int retries_left; 134 int retry; 135 int refcount; 136 enum ib_wc_status status; 137 138 /* RMPP control */ 139 struct list_head rmpp_list; 140 struct ib_rmpp_segment *last_ack_seg; 141 struct ib_rmpp_segment *cur_seg; 142 int last_ack; 143 int seg_num; 144 int newwin; 145 int pad; 146 }; 147 148 struct ib_mad_local_private { 149 struct list_head completion_list; 150 struct ib_mad_private *mad_priv; 151 struct ib_mad_agent_private *recv_mad_agent; 152 struct ib_mad_send_wr_private *mad_send_wr; 153 }; 154 155 struct ib_mad_mgmt_method_table { 156 struct ib_mad_agent_private *agent[IB_MGMT_MAX_METHODS]; 157 }; 158 159 struct ib_mad_mgmt_class_table { 160 struct ib_mad_mgmt_method_table *method_table[MAX_MGMT_CLASS]; 161 }; 162 163 struct 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 }; 167 168 struct ib_mad_mgmt_vendor_class_table { 169 struct ib_mad_mgmt_vendor_class *vendor_class[MAX_MGMT_VENDOR_RANGE2]; 170 }; 171 172 struct ib_mad_mgmt_version_table { 173 struct ib_mad_mgmt_class_table *class; 174 struct ib_mad_mgmt_vendor_class_table *vendor; 175 }; 176 177 struct 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 }; 184 185 struct 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 }; 196 197 struct 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 struct ib_mr *mr; 204 205 spinlock_t reg_lock; 206 struct ib_mad_mgmt_version_table version[MAX_MGMT_VERSION]; 207 struct list_head agent_list; 208 struct workqueue_struct *wq; 209 struct work_struct work; 210 struct ib_mad_qp_info qp_info[IB_MAD_QPS_CORE]; 211 }; 212 213 int ib_send_mad(struct ib_mad_send_wr_private *mad_send_wr); 214 215 struct ib_mad_send_wr_private * 216 ib_find_send_mad(struct ib_mad_agent_private *mad_agent_priv, 217 struct ib_mad_recv_wc *mad_recv_wc); 218 219 void ib_mad_complete_send_wr(struct ib_mad_send_wr_private *mad_send_wr, 220 struct ib_mad_send_wc *mad_send_wc); 221 222 void ib_mark_mad_done(struct ib_mad_send_wr_private *mad_send_wr); 223 224 void ib_reset_mad_timeout(struct ib_mad_send_wr_private *mad_send_wr, 225 int timeout_ms); 226 227 #endif /* __IB_MAD_PRIV_H__ */ 228