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1/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
2/*
3 * Copyright(c) 2018 Intel Corporation.
4 */
5
6#ifndef _HFI1_FAULT_H
7#define _HFI1_FAULT_H
8
9#include <linux/fault-inject.h>
10#include <linux/dcache.h>
11#include <linux/bitops.h>
12#include <linux/kernel.h>
13#include <rdma/rdma_vt.h>
14
15#include "hfi.h"
16
17struct hfi1_ibdev;
18
19#if defined(CONFIG_FAULT_INJECTION) && defined(CONFIG_FAULT_INJECTION_DEBUG_FS)
20struct fault {
21 struct fault_attr attr;
22 struct dentry *dir;
23 u64 n_rxfaults[(1U << BITS_PER_BYTE)];
24 u64 n_txfaults[(1U << BITS_PER_BYTE)];
25 u64 fault_skip;
26 u64 skip;
27 u64 fault_skip_usec;
28 unsigned long skip_usec;
29 unsigned long opcodes[(1U << BITS_PER_BYTE) / BITS_PER_LONG];
30 bool enable;
31 bool suppress_err;
32 bool opcode;
33 u8 direction;
34};
35
36int hfi1_fault_init_debugfs(struct hfi1_ibdev *ibd);
37bool hfi1_dbg_should_fault_tx(struct rvt_qp *qp, u32 opcode);
38bool hfi1_dbg_should_fault_rx(struct hfi1_packet *packet);
39bool hfi1_dbg_fault_suppress_err(struct hfi1_ibdev *ibd);
40void hfi1_fault_exit_debugfs(struct hfi1_ibdev *ibd);
41
42#else
43
44static inline int hfi1_fault_init_debugfs(struct hfi1_ibdev *ibd)
45{
46 return 0;
47}
48
49static inline bool hfi1_dbg_should_fault_rx(struct hfi1_packet *packet)
50{
51 return false;
52}
53
54static inline bool hfi1_dbg_should_fault_tx(struct rvt_qp *qp,
55 u32 opcode)
56{
57 return false;
58}
59
60static inline bool hfi1_dbg_fault_suppress_err(struct hfi1_ibdev *ibd)
61{
62 return false;
63}
64
65static inline void hfi1_fault_exit_debugfs(struct hfi1_ibdev *ibd)
66{
67}
68#endif
69#endif /* _HFI1_FAULT_H */
1#ifndef _HFI1_FAULT_H
2#define _HFI1_FAULT_H
3/*
4 * Copyright(c) 2018 Intel Corporation.
5 *
6 * This file is provided under a dual BSD/GPLv2 license. When using or
7 * redistributing this file, you may do so under either license.
8 *
9 * GPL LICENSE SUMMARY
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of version 2 of the GNU General Public License as
13 * published by the Free Software Foundation.
14 *
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * BSD LICENSE
21 *
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
24 * are met:
25 *
26 * - Redistributions of source code must retain the above copyright
27 * notice, this list of conditions and the following disclaimer.
28 * - Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in
30 * the documentation and/or other materials provided with the
31 * distribution.
32 * - Neither the name of Intel Corporation nor the names of its
33 * contributors may be used to endorse or promote products derived
34 * from this software without specific prior written permission.
35 *
36 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
37 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
38 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
39 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
40 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
42 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
43 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
44 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
45 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
46 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
47 *
48 */
49#include <linux/fault-inject.h>
50#include <linux/dcache.h>
51#include <linux/bitops.h>
52#include <linux/kernel.h>
53#include <rdma/rdma_vt.h>
54
55#include "hfi.h"
56
57struct hfi1_ibdev;
58
59#if defined(CONFIG_FAULT_INJECTION) && defined(CONFIG_FAULT_INJECTION_DEBUG_FS)
60struct fault {
61 struct fault_attr attr;
62 struct dentry *dir;
63 u64 n_rxfaults[(1U << BITS_PER_BYTE)];
64 u64 n_txfaults[(1U << BITS_PER_BYTE)];
65 u64 fault_skip;
66 u64 skip;
67 u64 fault_skip_usec;
68 unsigned long skip_usec;
69 unsigned long opcodes[(1U << BITS_PER_BYTE) / BITS_PER_LONG];
70 bool enable;
71 bool suppress_err;
72 bool opcode;
73 u8 direction;
74};
75
76int hfi1_fault_init_debugfs(struct hfi1_ibdev *ibd);
77bool hfi1_dbg_should_fault_tx(struct rvt_qp *qp, u32 opcode);
78bool hfi1_dbg_should_fault_rx(struct hfi1_packet *packet);
79bool hfi1_dbg_fault_suppress_err(struct hfi1_ibdev *ibd);
80void hfi1_fault_exit_debugfs(struct hfi1_ibdev *ibd);
81
82#else
83
84static inline int hfi1_fault_init_debugfs(struct hfi1_ibdev *ibd)
85{
86 return 0;
87}
88
89static inline bool hfi1_dbg_should_fault_rx(struct hfi1_packet *packet)
90{
91 return false;
92}
93
94static inline bool hfi1_dbg_should_fault_tx(struct rvt_qp *qp,
95 u32 opcode)
96{
97 return false;
98}
99
100static inline bool hfi1_dbg_fault_suppress_err(struct hfi1_ibdev *ibd)
101{
102 return false;
103}
104
105static inline void hfi1_fault_exit_debugfs(struct hfi1_ibdev *ibd)
106{
107}
108#endif
109#endif /* _HFI1_FAULT_H */