1 /*- 2 * Copyright (c) 2010 Isilon Systems, Inc. 3 * Copyright (c) 2010 iX Systems, Inc. 4 * Copyright (c) 2010 Panasas, Inc. 5 * Copyright (c) 2013-2017 Mellanox Technologies, Ltd. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice unmodified, this list of conditions, and the following 13 * disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 * 29 * $FreeBSD$ 30 */ 31 #ifndef _LINUX_PRINTK_H_ 32 #define _LINUX_PRINTK_H_ 33 34 #include <linux/kernel.h> 35 36 /* GID printing macros */ 37 #define GID_PRINT_FMT "%.4x:%.4x:%.4x:%.4x:%.4x:%.4x:%.4x:%.4x" 38 #define GID_PRINT_ARGS(gid_raw) htons(((u16 *)gid_raw)[0]), htons(((u16 *)gid_raw)[1]),\ 39 htons(((u16 *)gid_raw)[2]), htons(((u16 *)gid_raw)[3]),\ 40 htons(((u16 *)gid_raw)[4]), htons(((u16 *)gid_raw)[5]),\ 41 htons(((u16 *)gid_raw)[6]), htons(((u16 *)gid_raw)[7]) 42 43 enum { 44 DUMP_PREFIX_NONE, 45 DUMP_PREFIX_ADDRESS, 46 DUMP_PREFIX_OFFSET 47 }; 48 49 static inline void 50 print_hex_dump(const char *level, const char *prefix_str, 51 const int prefix_type, const int rowsize, const int groupsize, 52 const void *buf, size_t len, const bool ascii) 53 { 54 typedef const struct { long long value; } __packed *print_64p_t; 55 typedef const struct { uint32_t value; } __packed *print_32p_t; 56 typedef const struct { uint16_t value; } __packed *print_16p_t; 57 const void *buf_old = buf; 58 int row; 59 60 while (len > 0) { 61 if (level != NULL) 62 printf("%s", level); 63 if (prefix_str != NULL) 64 printf("%s ", prefix_str); 65 66 switch (prefix_type) { 67 case DUMP_PREFIX_ADDRESS: 68 printf("[%p] ", buf); 69 break; 70 case DUMP_PREFIX_OFFSET: 71 printf("[%p] ", (const char *)((const char *)buf - 72 (const char *)buf_old)); 73 break; 74 default: 75 break; 76 } 77 for (row = 0; row != rowsize; row++) { 78 if (groupsize == 8 && len > 7) { 79 printf("%016llx ", ((print_64p_t)buf)->value); 80 buf = (const uint8_t *)buf + 8; 81 len -= 8; 82 } else if (groupsize == 4 && len > 3) { 83 printf("%08x ", ((print_32p_t)buf)->value); 84 buf = (const uint8_t *)buf + 4; 85 len -= 4; 86 } else if (groupsize == 2 && len > 1) { 87 printf("%04x ", ((print_16p_t)buf)->value); 88 buf = (const uint8_t *)buf + 2; 89 len -= 2; 90 } else if (len > 0) { 91 printf("%02x ", *(const uint8_t *)buf); 92 buf = (const uint8_t *)buf + 1; 93 len--; 94 } else { 95 break; 96 } 97 } 98 printf("\n"); 99 } 100 } 101 102 static inline void 103 print_hex_dump_bytes(const char *prefix_str, const int prefix_type, 104 const void *buf, size_t len) 105 { 106 print_hex_dump(NULL, prefix_str, prefix_type, 16, 1, buf, len, 0); 107 } 108 109 #define printk_ratelimit() ({ \ 110 static linux_ratelimit_t __ratelimited; \ 111 linux_ratelimited(&__ratelimited); \ 112 }) 113 114 #define printk_ratelimited(...) ({ \ 115 bool __retval = printk_ratelimit(); \ 116 if (__retval) \ 117 printk(__VA_ARGS__); \ 118 __retval; \ 119 }) 120 121 #define pr_err_ratelimited(fmt, ...) \ 122 printk_ratelimited(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__) 123 124 #define print_hex_dump_debug(...) \ 125 print_hex_dump(KERN_DEBUG, ##__VA_ARGS__) 126 127 #define pr_info_ratelimited(fmt, ...) \ 128 printk_ratelimited(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__) 129 130 #endif /* _LINUX_PRINTK_H_ */ 131