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
  35 #ifndef __IB_MAD_PRIV_H__
  36 #define __IB_MAD_PRIV_H__
  37
  38 #include <linux/completion.h>
  39 #include <linux/err.h>
  40 #include <linux/workqueue.h>
  41 #include <rdma/ib_mad.h>
  42 #include <rdma/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         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__ */