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81 lines
2.1 KiB
81 lines
2.1 KiB
/* 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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