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 
17 struct hfi1_ibdev;
18 
19 #if defined(CONFIG_FAULT_INJECTION) && defined(CONFIG_FAULT_INJECTION_DEBUG_FS)
20 struct 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 
36 int hfi1_fault_init_debugfs(struct hfi1_ibdev *ibd);
37 bool hfi1_dbg_should_fault_tx(struct rvt_qp *qp, u32 opcode);
38 bool hfi1_dbg_should_fault_rx(struct hfi1_packet *packet);
39 bool hfi1_dbg_fault_suppress_err(struct hfi1_ibdev *ibd);
40 void hfi1_fault_exit_debugfs(struct hfi1_ibdev *ibd);
41 
42 #else
43 
hfi1_fault_init_debugfs(struct hfi1_ibdev * ibd)44 static inline int hfi1_fault_init_debugfs(struct hfi1_ibdev *ibd)
45 {
46 	return 0;
47 }
48 
hfi1_dbg_should_fault_rx(struct hfi1_packet * packet)49 static inline bool hfi1_dbg_should_fault_rx(struct hfi1_packet *packet)
50 {
51 	return false;
52 }
53 
hfi1_dbg_should_fault_tx(struct rvt_qp * qp,u32 opcode)54 static inline bool hfi1_dbg_should_fault_tx(struct rvt_qp *qp,
55 					    u32 opcode)
56 {
57 	return false;
58 }
59 
hfi1_dbg_fault_suppress_err(struct hfi1_ibdev * ibd)60 static inline bool hfi1_dbg_fault_suppress_err(struct hfi1_ibdev *ibd)
61 {
62 	return false;
63 }
64 
hfi1_fault_exit_debugfs(struct hfi1_ibdev * ibd)65 static inline void hfi1_fault_exit_debugfs(struct hfi1_ibdev *ibd)
66 {
67 }
68 #endif
69 #endif /* _HFI1_FAULT_H */
70