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105 lines
3.3 KiB
105 lines
3.3 KiB
/* |
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* Copyright (c) 2010 Intel Corporation. All rights reserved. |
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* |
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* This software is available to you under a choice of one of two |
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* licenses. You may choose to be licensed under the terms of the GNU |
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* General Public License (GPL) Version 2, available from the file |
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* COPYING in the main directory of this source tree, or the |
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* OpenIB.org BSD license below: |
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* |
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* Redistribution and use in source and binary forms, with or |
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* without modification, are permitted provided that the following |
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* conditions are met: |
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* |
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* - Redistributions of source code must retain the above |
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* copyright notice, this list of conditions and the following |
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* disclaimer. |
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* |
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* - Redistributions in binary form must reproduce the above |
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* copyright notice, this list of conditions and the following |
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* disclaimer in the documentation and/or other materials |
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* provided with the distribution. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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* SOFTWARE. |
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*/ |
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#if !defined(_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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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 int 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 int 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() && segment_eq(get_fs(), USER_DS); |
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} |
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#endif /* _RDMA_IB_H */
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