drivers/infiniband/core/mad_priv.h

   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  *
   6  * This software is available to you under a choice of one of two
   7  * licenses.  You may choose to be licensed under the terms of the GNU
   8  * General Public License (GPL) Version 2, available from the file
   9  * COPYING in the main directory of this source tree, or the
  10  * OpenIB.org BSD license below:
  11  *
  12  *     Redistribution and use in source and binary forms, with or
  13  *     without modification, are permitted provided that the following
  14  *     conditions are met:
  15  *
  16  *      - Redistributions of source code must retain the above
  17  *        copyright notice, this list of conditions and the following
  18  *        disclaimer.
  19  *
  20  *      - Redistributions in binary form must reproduce the above
  21  *        copyright notice, this list of conditions and the following
  22  *        disclaimer in the documentation and/or other materials
  23  *        provided with the distribution.
  24  *
  25  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  26  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  27  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  28  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  29  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  30  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  31  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  32  * SOFTWARE.
  33  *
  34  * $Id: mad_priv.h 5596 2006-03-03 01:00:07Z sean.hefty $
  35  */
  36
  37 #ifndef __IB_MAD_PRIV_H__
  38 #define __IB_MAD_PRIV_H__
  39
  40 #include <linux/completion.h>
  41 #include <linux/err.h>
  42 #include <linux/workqueue.h>
  43 #include <rdma/ib_mad.h>
  44 #include <rdma/ib_smi.h>
  45
  46
  47 #define PFX "ib_mad: "
  48
  49 #define IB_MAD_QPS_CORE         2 /* Always QP0 and QP1 as a minimum */
  50
  51 /* QP and CQ parameters */
  52 #define IB_MAD_QP_SEND_SIZE     128
  53 #define IB_MAD_QP_RECV_SIZE     512
  54 #define IB_MAD_SEND_REQ_MAX_SG  2
  55 #define IB_MAD_RECV_REQ_MAX_SG  1
  56
  57 #define IB_MAD_SEND_Q_PSN       0
  58
  59 /* Registration table sizes */
  60 #define MAX_MGMT_CLASS          80
  61 #define MAX_MGMT_VERSION        8
  62 #define MAX_MGMT_OUI            8
  63 #define MAX_MGMT_VENDOR_RANGE2  (IB_MGMT_CLASS_VENDOR_RANGE2_END - \
  64                                 IB_MGMT_CLASS_VENDOR_RANGE2_START + 1)
  65
  66 struct ib_mad_list_head {
  67         struct list_head list;
  68         struct ib_mad_queue *mad_queue;
  69 };
  70
  71 struct 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
  78 struct ib_mad_private {
  79         struct ib_mad_private_header header;
  80         struct ib_grh grh;
  81         union {
  82                 struct ib_mad mad;
  83                 struct ib_rmpp_mad rmpp_mad;
  84                 struct ib_smp smp;
  85         } mad;
  86 } __attribute__ ((packed));
  87
  88 struct ib_rmpp_segment {
  89         struct list_head list;
  90         u32 num;
  91         u8 data[0];
  92 };
  93
  94 struct ib_mad_agent_private {
  95         struct list_head agent_list;
  96         struct ib_mad_agent agent;
  97         struct ib_mad_reg_req *reg_req;
  98         struct ib_mad_qp_info *qp_info;
  99
 100         spinlock_t lock;
 101         struct list_head send_list;
 102         struct list_head wait_list;
 103         struct list_head done_list;
 104         struct delayed_work timed_work;
 105         unsigned long timeout;
 106         struct list_head local_list;
 107         struct work_struct local_work;
 108         struct list_head rmpp_list;
 109
 110         atomic_t refcount;
 111         struct completion comp;
 112 };
 113
 114 struct ib_mad_snoop_private {
 115         struct ib_mad_agent agent;
 116         struct ib_mad_qp_info *qp_info;
 117         int snoop_index;
 118         int mad_snoop_flags;
 119         atomic_t refcount;
 120         struct completion comp;
 121 };
 122
 123 struct ib_mad_send_wr_private {
 124         struct ib_mad_list_head mad_list;
 125         struct list_head agent_list;
 126         struct ib_mad_agent_private *mad_agent_priv;
 127         struct ib_mad_send_buf send_buf;
 128         u64 header_mapping;
 129         u64 payload_mapping;
 130         struct ib_send_wr send_wr;
 131         struct ib_sge sg_list[IB_MAD_SEND_REQ_MAX_SG];
 132         __be64 tid;
 133         unsigned long timeout;
 134         int retries;
 135         int retry;
 136         int refcount;
 137         enum ib_wc_status status;
 138
 139         /* RMPP control */
 140         struct list_head rmpp_list;
 141         struct ib_rmpp_segment *last_ack_seg;
 142         struct ib_rmpp_segment *cur_seg;
 143         int last_ack;
 144         int seg_num;
 145         int newwin;
 146         int pad;
 147 };
 148
 149 struct ib_mad_local_private {
 150         struct list_head completion_list;
 151         struct ib_mad_private *mad_priv;
 152         struct ib_mad_agent_private *recv_mad_agent;
 153         struct ib_mad_send_wr_private *mad_send_wr;
 154 };
 155
 156 struct ib_mad_mgmt_method_table {
 157         struct ib_mad_agent_private *agent[IB_MGMT_MAX_METHODS];
 158 };
 159
 160 struct ib_mad_mgmt_class_table {
 161         struct ib_mad_mgmt_method_table *method_table[MAX_MGMT_CLASS];
 162 };
 163
 164 struct ib_mad_mgmt_vendor_class {
 165         u8      oui[MAX_MGMT_OUI][3];
 166         struct ib_mad_mgmt_method_table *method_table[MAX_MGMT_OUI];
 167 };
 168
 169 struct ib_mad_mgmt_vendor_class_table {
 170         struct ib_mad_mgmt_vendor_class *vendor_class[MAX_MGMT_VENDOR_RANGE2];
 171 };
 172
 173 struct ib_mad_mgmt_version_table {
 174         struct ib_mad_mgmt_class_table *class;
 175         struct ib_mad_mgmt_vendor_class_table *vendor;
 176 };
 177
 178 struct ib_mad_queue {
 179         spinlock_t lock;
 180         struct list_head list;
 181         int count;
 182         int max_active;
 183         struct ib_mad_qp_info *qp_info;
 184 };
 185
 186 struct ib_mad_qp_info {
 187         struct ib_mad_port_private *port_priv;
 188         struct ib_qp *qp;
 189         struct ib_mad_queue send_queue;
 190         struct ib_mad_queue recv_queue;
 191         struct list_head overflow_list;
 192         spinlock_t snoop_lock;
 193         struct ib_mad_snoop_private **snoop_table;
 194         int snoop_table_size;
 195         atomic_t snoop_count;
 196 };
 197
 198 struct ib_mad_port_private {
 199         struct list_head port_list;
 200         struct ib_device *device;
 201         int port_num;
 202         struct ib_cq *cq;
 203         struct ib_pd *pd;
 204         struct ib_mr *mr;
 205
 206         spinlock_t reg_lock;
 207         struct ib_mad_mgmt_version_table version[MAX_MGMT_VERSION];
 208         struct list_head agent_list;
 209         struct workqueue_struct *wq;
 210         struct work_struct work;
 211         struct ib_mad_qp_info qp_info[IB_MAD_QPS_CORE];
 212 };
 213
 214 int ib_send_mad(struct ib_mad_send_wr_private *mad_send_wr);
 215
 216 struct ib_mad_send_wr_private *
 217 ib_find_send_mad(struct ib_mad_agent_private *mad_agent_priv,
 218                  struct ib_mad_recv_wc *mad_recv_wc);
 219
 220 void ib_mad_complete_send_wr(struct ib_mad_send_wr_private *mad_send_wr,
 221                              struct ib_mad_send_wc *mad_send_wc);
 222
 223 void ib_mark_mad_done(struct ib_mad_send_wr_private *mad_send_wr);
 224
 225 void ib_reset_mad_timeout(struct ib_mad_send_wr_private *mad_send_wr,
 226                           int timeout_ms);
 227
 228 #endif  /* __IB_MAD_PRIV_H__ */