1/*
 2 * Copyright (c) 2010 Intel Corporation.  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 * OpenIB.org 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#if !defined(_RDMA_IB_H)
34#define _RDMA_IB_H
35
36#include <linux/types.h>
 
 
 
 
37
38struct ib_addr {
39	union {
40		__u8		uib_addr8[16];
41		__be16		uib_addr16[8];
42		__be32		uib_addr32[4];
43		__be64		uib_addr64[2];
44	} ib_u;
45#define sib_addr8		ib_u.uib_addr8
46#define sib_addr16		ib_u.uib_addr16
47#define sib_addr32		ib_u.uib_addr32
48#define sib_addr64		ib_u.uib_addr64
49#define sib_raw			ib_u.uib_addr8
50#define sib_subnet_prefix	ib_u.uib_addr64[0]
51#define sib_interface_id	ib_u.uib_addr64[1]
52};
53
54static inline int ib_addr_any(const struct ib_addr *a)
55{
56	return ((a->sib_addr64[0] | a->sib_addr64[1]) == 0);
57}
58
59static inline int ib_addr_loopback(const struct ib_addr *a)
60{
61	return ((a->sib_addr32[0] | a->sib_addr32[1] |
62		 a->sib_addr32[2] | (a->sib_addr32[3] ^ htonl(1))) == 0);
63}
64
65static inline void ib_addr_set(struct ib_addr *addr,
66			       __be32 w1, __be32 w2, __be32 w3, __be32 w4)
67{
68	addr->sib_addr32[0] = w1;
69	addr->sib_addr32[1] = w2;
70	addr->sib_addr32[2] = w3;
71	addr->sib_addr32[3] = w4;
72}
73
74static inline int ib_addr_cmp(const struct ib_addr *a1, const struct ib_addr *a2)
75{
76	return memcmp(a1, a2, sizeof(struct ib_addr));
77}
78
79struct sockaddr_ib {
80	unsigned short int	sib_family;	/* AF_IB */
81	__be16			sib_pkey;
82	__be32			sib_flowinfo;
83	struct ib_addr		sib_addr;
84	__be64			sib_sid;
85	__be64			sib_sid_mask;
86	__u64			sib_scope_id;
87};
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
88
89#endif /* _RDMA_IB_H */

 1/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
 2/*
 3 * Copyright (c) 2010 Intel Corporation.  All rights reserved.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 4 */
 5
 6#ifndef _RDMA_IB_H
 7#define _RDMA_IB_H
 8
 9#include <linux/types.h>
10#include <linux/sched.h>
11#include <linux/cred.h>
12#include <linux/uaccess.h>
13#include <linux/fs.h>
14
15struct ib_addr {
16	union {
17		__u8		uib_addr8[16];
18		__be16		uib_addr16[8];
19		__be32		uib_addr32[4];
20		__be64		uib_addr64[2];
21	} ib_u;
22#define sib_addr8		ib_u.uib_addr8
23#define sib_addr16		ib_u.uib_addr16
24#define sib_addr32		ib_u.uib_addr32
25#define sib_addr64		ib_u.uib_addr64
26#define sib_raw			ib_u.uib_addr8
27#define sib_subnet_prefix	ib_u.uib_addr64[0]
28#define sib_interface_id	ib_u.uib_addr64[1]
29};
30
31static inline bool ib_addr_any(const struct ib_addr *a)
32{
33	return ((a->sib_addr64[0] | a->sib_addr64[1]) == 0);
34}
35
36static inline bool ib_addr_loopback(const struct ib_addr *a)
37{
38	return ((a->sib_addr32[0] | a->sib_addr32[1] |
39		 a->sib_addr32[2] | (a->sib_addr32[3] ^ htonl(1))) == 0);
40}
41
42static inline void ib_addr_set(struct ib_addr *addr,
43			       __be32 w1, __be32 w2, __be32 w3, __be32 w4)
44{
45	addr->sib_addr32[0] = w1;
46	addr->sib_addr32[1] = w2;
47	addr->sib_addr32[2] = w3;
48	addr->sib_addr32[3] = w4;
49}
50
51static inline int ib_addr_cmp(const struct ib_addr *a1, const struct ib_addr *a2)
52{
53	return memcmp(a1, a2, sizeof(struct ib_addr));
54}
55
56struct sockaddr_ib {
57	unsigned short int	sib_family;	/* AF_IB */
58	__be16			sib_pkey;
59	__be32			sib_flowinfo;
60	struct ib_addr		sib_addr;
61	__be64			sib_sid;
62	__be64			sib_sid_mask;
63	__u64			sib_scope_id;
64};
65
66/*
67 * The IB interfaces that use write() as bi-directional ioctl() are
68 * fundamentally unsafe, since there are lots of ways to trigger "write()"
69 * calls from various contexts with elevated privileges. That includes the
70 * traditional suid executable error message writes, but also various kernel
71 * interfaces that can write to file descriptors.
72 *
73 * This function provides protection for the legacy API by restricting the
74 * calling context.
75 */
76static inline bool ib_safe_file_access(struct file *filp)
77{
78	return filp->f_cred == current_cred();
79}
80
81#endif /* _RDMA_IB_H */