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 extern const struct usnic_vnic_res_spec min_transport_spec[USNIC_TRANSPORT_MAX];
88 
89 const char *usnic_ib_qp_grp_state_to_string(enum ib_qp_state state);
90 int usnic_ib_qp_grp_dump_hdr(char *buf, int buf_sz);
91 int usnic_ib_qp_grp_dump_rows(void *obj, char *buf, int buf_sz);
92 int usnic_ib_qp_grp_create(struct usnic_ib_qp_grp *qp,
93 			   struct usnic_fwd_dev *ufdev, struct usnic_ib_vf *vf,
94 			   struct usnic_ib_pd *pd,
95 			   struct usnic_vnic_res_spec *res_spec,
96 			   struct usnic_transport_spec *trans_spec);
97 void usnic_ib_qp_grp_destroy(struct usnic_ib_qp_grp *qp_grp);
98 int usnic_ib_qp_grp_modify(struct usnic_ib_qp_grp *qp_grp,
99 				enum ib_qp_state new_state,
100 				void *data);
101 struct usnic_vnic_res_chunk
102 *usnic_ib_qp_grp_get_chunk(struct usnic_ib_qp_grp *qp_grp,
103 				enum usnic_vnic_res_type type);
104 static inline
to_uqp_grp(struct ib_qp * ibqp)105 struct usnic_ib_qp_grp *to_uqp_grp(struct ib_qp *ibqp)
106 {
107 	return container_of(ibqp, struct usnic_ib_qp_grp, ibqp);
108 }
109 #endif /* USNIC_IB_QP_GRP_H_ */
110