GNU Linux-libre 4.9.287-gnu1
[releases.git] / drivers / infiniband / hw / usnic / usnic_ib_qp_grp.h
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 #ifndef USNIC_IB_QP_GRP_H_
35 #define USNIC_IB_QP_GRP_H_
36
37 #include <linux/debugfs.h>
38 #include <rdma/ib_verbs.h>
39
40 #include "usnic_ib.h"
41 #include "usnic_abi.h"
42 #include "usnic_fwd.h"
43 #include "usnic_vnic.h"
44
45 /*
46  * The qp group struct represents all the hw resources needed to present a ib_qp
47  */
48 struct usnic_ib_qp_grp {
49         struct ib_qp                            ibqp;
50         enum ib_qp_state                        state;
51         int                                     grp_id;
52
53         struct usnic_fwd_dev                    *ufdev;
54         struct usnic_ib_ucontext                *ctx;
55         struct list_head                        flows_lst;
56
57         struct usnic_vnic_res_chunk             **res_chunk_list;
58
59         pid_t                                   owner_pid;
60         struct usnic_ib_vf                      *vf;
61         struct list_head                        link;
62
63         spinlock_t                              lock;
64
65         struct kobject                          kobj;
66 };
67
68 struct usnic_ib_qp_grp_flow {
69         struct usnic_fwd_flow           *flow;
70         enum usnic_transport_type       trans_type;
71         union {
72                 struct {
73                         uint16_t        port_num;
74                 } usnic_roce;
75                 struct {
76                         struct socket   *sock;
77                 } udp;
78         };
79         struct usnic_ib_qp_grp          *qp_grp;
80         struct list_head                link;
81
82         /* Debug FS */
83         struct dentry                   *dbgfs_dentry;
84         char                            dentry_name[32];
85 };
86
87 static const struct
88 usnic_vnic_res_spec min_transport_spec[USNIC_TRANSPORT_MAX] = {
89         { /*USNIC_TRANSPORT_UNKNOWN*/
90                 .resources = {
91                         {.type = USNIC_VNIC_RES_TYPE_EOL,       .cnt = 0,},
92                 },
93         },
94         { /*USNIC_TRANSPORT_ROCE_CUSTOM*/
95                 .resources = {
96                         {.type = USNIC_VNIC_RES_TYPE_WQ,        .cnt = 1,},
97                         {.type = USNIC_VNIC_RES_TYPE_RQ,        .cnt = 1,},
98                         {.type = USNIC_VNIC_RES_TYPE_CQ,        .cnt = 1,},
99                         {.type = USNIC_VNIC_RES_TYPE_EOL,       .cnt = 0,},
100                 },
101         },
102         { /*USNIC_TRANSPORT_IPV4_UDP*/
103                 .resources = {
104                         {.type = USNIC_VNIC_RES_TYPE_WQ,        .cnt = 1,},
105                         {.type = USNIC_VNIC_RES_TYPE_RQ,        .cnt = 1,},
106                         {.type = USNIC_VNIC_RES_TYPE_CQ,        .cnt = 1,},
107                         {.type = USNIC_VNIC_RES_TYPE_EOL,       .cnt = 0,},
108                 },
109         },
110 };
111
112 const char *usnic_ib_qp_grp_state_to_string(enum ib_qp_state state);
113 int usnic_ib_qp_grp_dump_hdr(char *buf, int buf_sz);
114 int usnic_ib_qp_grp_dump_rows(void *obj, char *buf, int buf_sz);
115 struct usnic_ib_qp_grp *
116 usnic_ib_qp_grp_create(struct usnic_fwd_dev *ufdev, struct usnic_ib_vf *vf,
117                         struct usnic_ib_pd *pd,
118                         struct usnic_vnic_res_spec *res_spec,
119                         struct usnic_transport_spec *trans_spec);
120 void usnic_ib_qp_grp_destroy(struct usnic_ib_qp_grp *qp_grp);
121 int usnic_ib_qp_grp_modify(struct usnic_ib_qp_grp *qp_grp,
122                                 enum ib_qp_state new_state,
123                                 void *data);
124 struct usnic_vnic_res_chunk
125 *usnic_ib_qp_grp_get_chunk(struct usnic_ib_qp_grp *qp_grp,
126                                 enum usnic_vnic_res_type type);
127 static inline
128 struct usnic_ib_qp_grp *to_uqp_grp(struct ib_qp *ibqp)
129 {
130         return container_of(ibqp, struct usnic_ib_qp_grp, ibqp);
131 }
132 #endif /* USNIC_IB_QP_GRP_H_ */