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c2_vq.h
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1 /*
2  * Copyright (c) 2005 Ammasso, Inc. All rights reserved.
3  * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved.
4  *
5  * This software is available to you under a choice of one of two
6  * licenses. You may choose to be licensed under the terms of the GNU
7  * General Public License (GPL) Version 2, available from the file
8  * COPYING in the main directory of this source tree, or the
9  * OpenIB.org BSD license below:
10  *
11  * Redistribution and use in source and binary forms, with or
12  * without modification, are permitted provided that the following
13  * conditions are met:
14  *
15  * - Redistributions of source code must retain the above
16  * copyright notice, this list of conditions and the following
17  * disclaimer.
18  *
19  * - Redistributions in binary form must reproduce the above
20  * copyright notice, this list of conditions and the following
21  * disclaimer in the documentation and/or other materials
22  * provided with the distribution.
23  *
24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31  * SOFTWARE.
32  */
33 #ifndef _C2_VQ_H_
34 #define _C2_VQ_H_
35 #include <linux/sched.h>
36 #include "c2.h"
37 #include "c2_wr.h"
38 #include "c2_provider.h"
39 
40 struct c2_vq_req {
41  u64 reply_msg; /* ptr to reply msg */
42  wait_queue_head_t wait_object; /* wait object for vq reqs */
43  atomic_t reply_ready; /* set when reply is ready */
44  atomic_t refcnt; /* used to cancel WRs... */
45  int event;
46  struct iw_cm_id *cm_id;
47  struct c2_qp *qp;
48 };
49 
50 extern int vq_init(struct c2_dev *c2dev);
51 extern void vq_term(struct c2_dev *c2dev);
52 
53 extern struct c2_vq_req *vq_req_alloc(struct c2_dev *c2dev);
54 extern void vq_req_free(struct c2_dev *c2dev, struct c2_vq_req *req);
55 extern void vq_req_get(struct c2_dev *c2dev, struct c2_vq_req *req);
56 extern void vq_req_put(struct c2_dev *c2dev, struct c2_vq_req *req);
57 extern int vq_send_wr(struct c2_dev *c2dev, union c2wr * wr);
58 
59 extern void *vq_repbuf_alloc(struct c2_dev *c2dev);
60 extern void vq_repbuf_free(struct c2_dev *c2dev, void *reply);
61 
62 extern int vq_wait_for_reply(struct c2_dev *c2dev, struct c2_vq_req *req);
63 #endif /* _C2_VQ_H_ */