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/drivers/infiniband/core/mad_priv.h

https://bitbucket.org/ndreys/linux-sunxi
C++ Header | 230 lines | 159 code | 34 blank | 37 comment | 0 complexity | 1183ce96997a94491b8cacb29c4aa7b5 MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
  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
 46#define PFX "ib_mad: "
 47
 48#define IB_MAD_QPS_CORE		2 /* Always QP0 and QP1 as a minimum */
 49
 50/* QP and CQ parameters */
 51#define IB_MAD_QP_SEND_SIZE	128
 52#define IB_MAD_QP_RECV_SIZE	512
 53#define IB_MAD_QP_MIN_SIZE	64
 54#define IB_MAD_QP_MAX_SIZE	8192
 55#define IB_MAD_SEND_REQ_MAX_SG	2
 56#define IB_MAD_RECV_REQ_MAX_SG	1
 57
 58#define IB_MAD_SEND_Q_PSN	0
 59
 60/* Registration table sizes */
 61#define MAX_MGMT_CLASS		80
 62#define MAX_MGMT_VERSION	8
 63#define MAX_MGMT_OUI		8
 64#define MAX_MGMT_VENDOR_RANGE2	(IB_MGMT_CLASS_VENDOR_RANGE2_END - \
 65				IB_MGMT_CLASS_VENDOR_RANGE2_START + 1)
 66
 67struct ib_mad_list_head {
 68	struct list_head list;
 69	struct ib_mad_queue *mad_queue;
 70};
 71
 72struct ib_mad_private_header {
 73	struct ib_mad_list_head mad_list;
 74	struct ib_mad_recv_wc recv_wc;
 75	struct ib_wc wc;
 76	u64 mapping;
 77} __attribute__ ((packed));
 78
 79struct ib_mad_private {
 80	struct ib_mad_private_header header;
 81	struct ib_grh grh;
 82	union {
 83		struct ib_mad mad;
 84		struct ib_rmpp_mad rmpp_mad;
 85		struct ib_smp smp;
 86	} mad;
 87} __attribute__ ((packed));
 88
 89struct ib_rmpp_segment {
 90	struct list_head list;
 91	u32 num;
 92	u8 data[0];
 93};
 94
 95struct ib_mad_agent_private {
 96	struct list_head agent_list;
 97	struct ib_mad_agent agent;
 98	struct ib_mad_reg_req *reg_req;
 99	struct ib_mad_qp_info *qp_info;
100
101	spinlock_t lock;
102	struct list_head send_list;
103	struct list_head wait_list;
104	struct list_head done_list;
105	struct delayed_work timed_work;
106	unsigned long timeout;
107	struct list_head local_list;
108	struct work_struct local_work;
109	struct list_head rmpp_list;
110
111	atomic_t refcount;
112	struct completion comp;
113};
114
115struct ib_mad_snoop_private {
116	struct ib_mad_agent agent;
117	struct ib_mad_qp_info *qp_info;
118	int snoop_index;
119	int mad_snoop_flags;
120	atomic_t refcount;
121	struct completion comp;
122};
123
124struct ib_mad_send_wr_private {
125	struct ib_mad_list_head mad_list;
126	struct list_head agent_list;
127	struct ib_mad_agent_private *mad_agent_priv;
128	struct ib_mad_send_buf send_buf;
129	u64 header_mapping;
130	u64 payload_mapping;
131	struct ib_send_wr send_wr;
132	struct ib_sge sg_list[IB_MAD_SEND_REQ_MAX_SG];
133	__be64 tid;
134	unsigned long timeout;
135	int max_retries;
136	int retries_left;
137	int retry;
138	int refcount;
139	enum ib_wc_status status;
140
141	/* RMPP control */
142	struct list_head rmpp_list;
143	struct ib_rmpp_segment *last_ack_seg;
144	struct ib_rmpp_segment *cur_seg;
145	int last_ack;
146	int seg_num;
147	int newwin;
148	int pad;
149};
150
151struct ib_mad_local_private {
152	struct list_head completion_list;
153	struct ib_mad_private *mad_priv;
154	struct ib_mad_agent_private *recv_mad_agent;
155	struct ib_mad_send_wr_private *mad_send_wr;
156};
157
158struct ib_mad_mgmt_method_table {
159	struct ib_mad_agent_private *agent[IB_MGMT_MAX_METHODS];
160};
161
162struct ib_mad_mgmt_class_table {
163	struct ib_mad_mgmt_method_table *method_table[MAX_MGMT_CLASS];
164};
165
166struct ib_mad_mgmt_vendor_class {
167	u8	oui[MAX_MGMT_OUI][3];
168	struct ib_mad_mgmt_method_table *method_table[MAX_MGMT_OUI];
169};
170
171struct ib_mad_mgmt_vendor_class_table {
172	struct ib_mad_mgmt_vendor_class *vendor_class[MAX_MGMT_VENDOR_RANGE2];
173};
174
175struct ib_mad_mgmt_version_table {
176	struct ib_mad_mgmt_class_table *class;
177	struct ib_mad_mgmt_vendor_class_table *vendor;
178};
179
180struct ib_mad_queue {
181	spinlock_t lock;
182	struct list_head list;
183	int count;
184	int max_active;
185	struct ib_mad_qp_info *qp_info;
186};
187
188struct ib_mad_qp_info {
189	struct ib_mad_port_private *port_priv;
190	struct ib_qp *qp;
191	struct ib_mad_queue send_queue;
192	struct ib_mad_queue recv_queue;
193	struct list_head overflow_list;
194	spinlock_t snoop_lock;
195	struct ib_mad_snoop_private **snoop_table;
196	int snoop_table_size;
197	atomic_t snoop_count;
198};
199
200struct ib_mad_port_private {
201	struct list_head port_list;
202	struct ib_device *device;
203	int port_num;
204	struct ib_cq *cq;
205	struct ib_pd *pd;
206	struct ib_mr *mr;
207
208	spinlock_t reg_lock;
209	struct ib_mad_mgmt_version_table version[MAX_MGMT_VERSION];
210	struct list_head agent_list;
211	struct workqueue_struct *wq;
212	struct work_struct work;
213	struct ib_mad_qp_info qp_info[IB_MAD_QPS_CORE];
214};
215
216int ib_send_mad(struct ib_mad_send_wr_private *mad_send_wr);
217
218struct ib_mad_send_wr_private *
219ib_find_send_mad(struct ib_mad_agent_private *mad_agent_priv,
220		 struct ib_mad_recv_wc *mad_recv_wc);
221
222void ib_mad_complete_send_wr(struct ib_mad_send_wr_private *mad_send_wr,
223			     struct ib_mad_send_wc *mad_send_wc);
224
225void ib_mark_mad_done(struct ib_mad_send_wr_private *mad_send_wr);
226
227void ib_reset_mad_timeout(struct ib_mad_send_wr_private *mad_send_wr,
228			  int timeout_ms);
229
230#endif	/* __IB_MAD_PRIV_H__ */