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
45 enum 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
52 struct 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
64 struct 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 */
69 struct 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 */