drivers/infiniband/core/mad_priv.h

   1 /*
   2  * Copyright (c) 2004, 2005, Voltaire, Inc. All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  *
  32  * $Id: mad_priv.h 1980 2005-03-11 22:33:53Z sean.hefty $
  33  */
  34
  35 #ifndef __IB_MAD_PRIV_H__
  36 #define __IB_MAD_PRIV_H__
  37
  38 #include <linux/pci.h>
  39 #include <linux/kthread.h>
  40 #include <linux/workqueue.h>
  41 #include <ib_mad.h>
  42 #include <ib_smi.h>
  43
  44
  45 #define PFX "ib_mad: "
  46
  47 #define IB_MAD_QPS_CORE         2 /* Always QP0 and QP1 as a minimum */
  48
  49 /* QP and CQ parameters */
  50 #define IB_MAD_QP_SEND_SIZE     128
  51 #define IB_MAD_QP_RECV_SIZE     512
  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         DECLARE_PCI_UNMAP_ADDR(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_mad_agent_private {
  87         struct list_head agent_list;
  88         struct ib_mad_agent agent;
  89         struct ib_mad_reg_req *reg_req;
  90         struct ib_mad_qp_info *qp_info;
  91
  92         spinlock_t lock;
  93         struct list_head send_list;
  94         struct list_head wait_list;
  95         struct list_head done_list;
  96         struct work_struct timed_work;
  97         unsigned long timeout;
  98         struct list_head local_list;
  99         struct work_struct local_work;
 100         struct list_head canceled_list;
 101         struct work_struct canceled_work;
 102
 103         atomic_t refcount;
 104         wait_queue_head_t wait;
 105         u8 rmpp_version;
 106 };
 107
 108 struct ib_mad_snoop_private {
 109         struct ib_mad_agent agent;
 110         struct ib_mad_qp_info *qp_info;
 111         int snoop_index;
 112         int mad_snoop_flags;
 113         atomic_t refcount;
 114         wait_queue_head_t wait;
 115 };
 116
 117 struct ib_mad_send_wr_private {
 118         struct ib_mad_list_head mad_list;
 119         struct list_head agent_list;
 120         struct ib_mad_agent_private *mad_agent_priv;
 121         struct ib_send_wr send_wr;
 122         struct ib_sge sg_list[IB_MAD_SEND_REQ_MAX_SG];
 123         u64 wr_id;                      /* client WR ID */
 124         u64 tid;
 125         unsigned long timeout;
 126         int retry;
 127         int refcount;
 128         enum ib_wc_status status;
 129 };
 130
 131 struct ib_mad_local_private {
 132         struct list_head completion_list;
 133         struct ib_mad_private *mad_priv;
 134         struct ib_mad_agent_private *recv_mad_agent;
 135         struct ib_send_wr send_wr;
 136         struct ib_sge sg_list[IB_MAD_SEND_REQ_MAX_SG];
 137         u64 wr_id;                      /* client WR ID */
 138         u64 tid;
 139 };
 140
 141 struct ib_mad_mgmt_method_table {
 142         struct ib_mad_agent_private *agent[IB_MGMT_MAX_METHODS];
 143 };
 144
 145 struct ib_mad_mgmt_class_table {
 146         struct ib_mad_mgmt_method_table *method_table[MAX_MGMT_CLASS];
 147 };
 148
 149 struct ib_mad_mgmt_vendor_class {
 150         u8      oui[MAX_MGMT_OUI][3];
 151         struct ib_mad_mgmt_method_table *method_table[MAX_MGMT_OUI];
 152 };
 153
 154 struct ib_mad_mgmt_vendor_class_table {
 155         struct ib_mad_mgmt_vendor_class *vendor_class[MAX_MGMT_VENDOR_RANGE2];
 156 };
 157
 158 struct ib_mad_mgmt_version_table {
 159         struct ib_mad_mgmt_class_table *class;
 160         struct ib_mad_mgmt_vendor_class_table *vendor;
 161 };
 162
 163 struct ib_mad_queue {
 164         spinlock_t lock;
 165         struct list_head list;
 166         int count;
 167         int max_active;
 168         struct ib_mad_qp_info *qp_info;
 169 };
 170
 171 struct ib_mad_qp_info {
 172         struct ib_mad_port_private *port_priv;
 173         struct ib_qp *qp;
 174         struct ib_mad_queue send_queue;
 175         struct ib_mad_queue recv_queue;
 176         struct list_head overflow_list;
 177         spinlock_t snoop_lock;
 178         struct ib_mad_snoop_private **snoop_table;
 179         int snoop_table_size;
 180         atomic_t snoop_count;
 181 };
 182
 183 struct ib_mad_port_private {
 184         struct list_head port_list;
 185         struct ib_device *device;
 186         int port_num;
 187         struct ib_cq *cq;
 188         struct ib_pd *pd;
 189         struct ib_mr *mr;
 190
 191         spinlock_t reg_lock;
 192         struct ib_mad_mgmt_version_table version[MAX_MGMT_VERSION];
 193         struct list_head agent_list;
 194         struct workqueue_struct *wq;
 195         struct work_struct work;
 196         struct ib_mad_qp_info qp_info[IB_MAD_QPS_CORE];
 197 };
 198
 199 extern kmem_cache_t *ib_mad_cache;
 200
 201 #endif  /* __IB_MAD_PRIV_H__ */