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#include <rdma/opa_smi.h>
45
46#define IB_MAD_QPS_CORE 2 /* Always QP0 and QP1 as a minimum */
47
48/* QP and CQ parameters */
49#define IB_MAD_QP_SEND_SIZE 128
50#define IB_MAD_QP_RECV_SIZE 512
51#define IB_MAD_QP_MIN_SIZE 64
52#define IB_MAD_QP_MAX_SIZE 8192
53#define IB_MAD_SEND_REQ_MAX_SG 2
54#define IB_MAD_RECV_REQ_MAX_SG 1
55
56#define IB_MAD_SEND_Q_PSN 0
57
58/* Registration table sizes */
59#define MAX_MGMT_CLASS 80
60#define MAX_MGMT_VERSION 0x83
61#define MAX_MGMT_OUI 8
62#define MAX_MGMT_VENDOR_RANGE2 (IB_MGMT_CLASS_VENDOR_RANGE2_END - \
63 IB_MGMT_CLASS_VENDOR_RANGE2_START + 1)
64
65struct ib_mad_list_head {
66 struct list_head list;
67 struct ib_cqe cqe;
68 struct ib_mad_queue *mad_queue;
69};
70
71struct 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} __packed;
77
78struct ib_mad_private {
79 struct ib_mad_private_header header;
80 size_t mad_size;
81 struct ib_grh grh;
82 u8 mad[];
83} __packed;
84
85struct ib_rmpp_segment {
86 struct list_head list;
87 u32 num;
88 u8 data[];
89};
90
91struct ib_mad_agent_private {
92 struct ib_mad_agent agent;
93 struct ib_mad_reg_req *reg_req;
94 struct ib_mad_qp_info *qp_info;
95
96 spinlock_t lock;
97 struct list_head send_list;
98 struct list_head wait_list;
99 struct list_head done_list;
100 struct delayed_work timed_work;
101 unsigned long timeout;
102 struct list_head local_list;
103 struct work_struct local_work;
104 struct list_head rmpp_list;
105
106 refcount_t refcount;
107 union {
108 struct completion comp;
109 struct rcu_head rcu;
110 };
111};
112
113struct ib_mad_snoop_private {
114 struct ib_mad_agent agent;
115 struct ib_mad_qp_info *qp_info;
116 int snoop_index;
117 int mad_snoop_flags;
118 struct completion comp;
119};
120
121struct 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_ud_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
148struct 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 size_t return_wc_byte_len;
154};
155
156struct ib_mad_mgmt_method_table {
157 struct ib_mad_agent_private *agent[IB_MGMT_MAX_METHODS];
158};
159
160struct ib_mad_mgmt_class_table {
161 struct ib_mad_mgmt_method_table *method_table[MAX_MGMT_CLASS];
162};
163
164struct 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
169struct ib_mad_mgmt_vendor_class_table {
170 struct ib_mad_mgmt_vendor_class *vendor_class[MAX_MGMT_VENDOR_RANGE2];
171};
172
173struct ib_mad_mgmt_version_table {
174 struct ib_mad_mgmt_class_table *class;
175 struct ib_mad_mgmt_vendor_class_table *vendor;
176};
177
178struct 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
186struct 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
198struct 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
205 spinlock_t reg_lock;
206 struct ib_mad_mgmt_version_table version[MAX_MGMT_VERSION];
207 struct workqueue_struct *wq;
208 struct ib_mad_qp_info qp_info[IB_MAD_QPS_CORE];
209};
210
211int ib_send_mad(struct ib_mad_send_wr_private *mad_send_wr);
212
213struct ib_mad_send_wr_private *
214ib_find_send_mad(const struct ib_mad_agent_private *mad_agent_priv,
215 const struct ib_mad_recv_wc *mad_recv_wc);
216
217void ib_mad_complete_send_wr(struct ib_mad_send_wr_private *mad_send_wr,
218 struct ib_mad_send_wc *mad_send_wc);
219
220void ib_mark_mad_done(struct ib_mad_send_wr_private *mad_send_wr);
221
222void ib_reset_mad_timeout(struct ib_mad_send_wr_private *mad_send_wr,
223 unsigned long timeout_ms);
224
225#endif /* __IB_MAD_PRIV_H__ */
226

source code of linux/drivers/infiniband/core/mad_priv.h