2 * Copyright (c) 2005 Cisco Systems. All rights reserved.
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:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
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.
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
32 * $Id: ib_srp.h 3932 2005-11-01 17:19:29Z roland $
38 #include <linux/types.h>
39 #include <linux/list.h>
40 #include <linux/mutex.h>
41 #include <linux/scatterlist.h>
43 #include <scsi/scsi_host.h>
44 #include <scsi/scsi_cmnd.h>
46 #include <rdma/ib_verbs.h>
47 #include <rdma/ib_sa.h>
48 #include <rdma/ib_cm.h>
49 #include <rdma/ib_fmr_pool.h>
52 SRP_PATH_REC_TIMEOUT_MS = 1000,
53 SRP_ABORT_TIMEOUT_MS = 5000,
55 SRP_PORT_REDIRECT = 1,
56 SRP_DLID_REDIRECT = 2,
60 SRP_DEF_SG_TABLESIZE = 12,
63 SRP_RQ_SIZE = 1 << SRP_RQ_SHIFT,
64 SRP_SQ_SIZE = SRP_RQ_SIZE - 1,
65 SRP_CQ_SIZE = SRP_SQ_SIZE + SRP_RQ_SIZE,
67 SRP_TAG_TSK_MGMT = 1 << (SRP_RQ_SHIFT + 1),
70 SRP_FMR_POOL_SIZE = 1024,
71 SRP_FMR_DIRTY_SIZE = SRP_FMR_POOL_SIZE / 4
74 #define SRP_OP_RECV (1 << 31)
76 enum srp_target_state {
78 SRP_TARGET_CONNECTING,
83 enum srp_request_type {
89 struct list_head dev_list;
90 struct ib_device *dev;
93 struct ib_fmr_pool *fmr_pool;
100 struct srp_device *dev;
102 struct class_device class_dev;
103 struct list_head target_list;
104 spinlock_t target_lock;
105 struct completion released;
106 struct list_head list;
110 struct list_head list;
111 struct scsi_cmnd *scmnd;
113 struct srp_iu *tsk_mgmt;
114 struct ib_pool_fmr *fmr;
115 struct completion done;
121 struct srp_target_port {
125 __be64 initiator_ext;
127 struct srp_host *srp_host;
128 struct Scsi_Host *scsi_host;
129 char target_name[32];
130 unsigned int scsi_id;
132 struct ib_sa_path_rec path;
134 struct ib_sa_query *path_query;
137 struct ib_cm_id *cm_id;
147 struct srp_iu *rx_ring[SRP_RQ_SIZE];
151 struct srp_iu *tx_ring[SRP_SQ_SIZE + 1];
153 struct list_head free_reqs;
154 struct list_head req_queue;
155 struct srp_request req_ring[SRP_SQ_SIZE];
157 struct work_struct work;
159 struct list_head list;
160 struct completion done;
162 enum srp_target_state state;
170 enum dma_data_direction direction;
173 #endif /* IB_SRP_H */