6bf9d8f6f0
The header files in RDMA subsystem are dual licensed and can be described by simple SPDX tag, so replace all of them at once together with making them use the same coding style for header guard defines. Link: https://lore.kernel.org/r/20200719072521.135260-1-leon@kernel.org Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
82 lines
2.1 KiB
C
82 lines
2.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
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/*
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* Copyright (c) 2010 Intel Corporation. All rights reserved.
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*/
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#ifndef _RDMA_IB_H
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#define _RDMA_IB_H
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#include <linux/types.h>
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#include <linux/sched.h>
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#include <linux/cred.h>
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#include <linux/uaccess.h>
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#include <linux/fs.h>
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struct ib_addr {
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union {
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__u8 uib_addr8[16];
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__be16 uib_addr16[8];
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__be32 uib_addr32[4];
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__be64 uib_addr64[2];
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} ib_u;
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#define sib_addr8 ib_u.uib_addr8
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#define sib_addr16 ib_u.uib_addr16
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#define sib_addr32 ib_u.uib_addr32
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#define sib_addr64 ib_u.uib_addr64
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#define sib_raw ib_u.uib_addr8
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#define sib_subnet_prefix ib_u.uib_addr64[0]
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#define sib_interface_id ib_u.uib_addr64[1]
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};
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static inline bool ib_addr_any(const struct ib_addr *a)
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{
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return ((a->sib_addr64[0] | a->sib_addr64[1]) == 0);
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}
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static inline bool ib_addr_loopback(const struct ib_addr *a)
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{
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return ((a->sib_addr32[0] | a->sib_addr32[1] |
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a->sib_addr32[2] | (a->sib_addr32[3] ^ htonl(1))) == 0);
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}
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static inline void ib_addr_set(struct ib_addr *addr,
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__be32 w1, __be32 w2, __be32 w3, __be32 w4)
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{
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addr->sib_addr32[0] = w1;
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addr->sib_addr32[1] = w2;
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addr->sib_addr32[2] = w3;
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addr->sib_addr32[3] = w4;
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}
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static inline int ib_addr_cmp(const struct ib_addr *a1, const struct ib_addr *a2)
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{
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return memcmp(a1, a2, sizeof(struct ib_addr));
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}
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struct sockaddr_ib {
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unsigned short int sib_family; /* AF_IB */
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__be16 sib_pkey;
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__be32 sib_flowinfo;
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struct ib_addr sib_addr;
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__be64 sib_sid;
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__be64 sib_sid_mask;
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__u64 sib_scope_id;
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};
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/*
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* The IB interfaces that use write() as bi-directional ioctl() are
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* fundamentally unsafe, since there are lots of ways to trigger "write()"
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* calls from various contexts with elevated privileges. That includes the
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* traditional suid executable error message writes, but also various kernel
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* interfaces that can write to file descriptors.
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*
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* This function provides protection for the legacy API by restricting the
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* calling context.
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*/
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static inline bool ib_safe_file_access(struct file *filp)
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{
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return filp->f_cred == current_cred() && !uaccess_kernel();
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}
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#endif /* _RDMA_IB_H */
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