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 */ 110