1/*
2 * Copyright (c) 2013, Cisco Systems, Inc. All rights reserved.
3 *
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 * BSD license below:
9 *
10 *     Redistribution and use in source and binary forms, with or
11 *     without modification, are permitted provided that the following
12 *     conditions are met:
13 *
14 *      - Redistributions of source code must retain the above
15 *        copyright notice, this list of conditions and the following
16 *        disclaimer.
17 *
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.
22 *
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
30 * SOFTWARE.
31 *
32 */
33
34
35#ifndef USNIC_ABI_H
36#define USNIC_ABI_H
37
38/* ABI between userspace and kernel */
39#define USNIC_UVERBS_ABI_VERSION	4
40
41#define USNIC_QP_GRP_MAX_WQS		8
42#define USNIC_QP_GRP_MAX_RQS		8
43#define USNIC_QP_GRP_MAX_CQS		16
44
45enum usnic_transport_type {
46	USNIC_TRANSPORT_UNKNOWN		= 0,
47	USNIC_TRANSPORT_ROCE_CUSTOM	= 1,
48	USNIC_TRANSPORT_IPV4_UDP	= 2,
49	USNIC_TRANSPORT_MAX		= 3,
50};
51
52struct usnic_transport_spec {
53	enum usnic_transport_type	trans_type;
54	union {
55		struct {
56			uint16_t	port_num;
57		} usnic_roce;
58		struct {
59			uint32_t	sock_fd;
60		} udp;
61	};
62};
63
64struct usnic_ib_create_qp_cmd {
65	struct usnic_transport_spec	spec;
66};
67
68/*TODO: Future - usnic_modify_qp needs to pass in generic filters */
69struct usnic_ib_create_qp_resp {
70	u32				vfid;
71	u32				qp_grp_id;
72	u64				bar_bus_addr;
73	u32				bar_len;
74/*
75 * WQ, RQ, CQ are explicity specified bc exposing a generic resources inteface
76 * expands the scope of ABI to many files.
77 */
78	u32				wq_cnt;
79	u32				rq_cnt;
80	u32				cq_cnt;
81	u32				wq_idx[USNIC_QP_GRP_MAX_WQS];
82	u32				rq_idx[USNIC_QP_GRP_MAX_RQS];
83	u32				cq_idx[USNIC_QP_GRP_MAX_CQS];
84	u32				transport;
85	u32				reserved[9];
86};
87
88#endif /* USNIC_ABI_H */
89