1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2017 Intel Corporation
13 * This file provides a log API to RTE applications.
23 #include <sys/queue.h>
25 #include <rte_common.h>
26 #include <rte_config.h>
27 #include <rte_compat.h>
29 struct rte_log_dynamic_type;
31 /** The rte_log structure. */
33 uint32_t type; /**< Bitfield with enabled logs. */
34 uint32_t level; /**< Log level. */
35 FILE *file; /**< Output file set by rte_openlog_stream, or NULL. */
36 size_t dynamic_types_len;
37 struct rte_log_dynamic_type *dynamic_types;
40 /** Global log informations */
41 extern struct rte_logs rte_logs;
44 #define RTE_LOGTYPE_EAL 0 /**< Log related to eal. */
45 #define RTE_LOGTYPE_MALLOC 1 /**< Log related to malloc. */
46 #define RTE_LOGTYPE_RING 2 /**< Log related to ring. */
47 #define RTE_LOGTYPE_MEMPOOL 3 /**< Log related to mempool. */
48 #define RTE_LOGTYPE_TIMER 4 /**< Log related to timers. */
49 #define RTE_LOGTYPE_PMD 5 /**< Log related to poll mode driver. */
50 #define RTE_LOGTYPE_HASH 6 /**< Log related to hash table. */
51 #define RTE_LOGTYPE_LPM 7 /**< Log related to LPM. */
52 #define RTE_LOGTYPE_KNI 8 /**< Log related to KNI. */
53 #define RTE_LOGTYPE_ACL 9 /**< Log related to ACL. */
54 #define RTE_LOGTYPE_POWER 10 /**< Log related to power. */
55 #define RTE_LOGTYPE_METER 11 /**< Log related to QoS meter. */
56 #define RTE_LOGTYPE_SCHED 12 /**< Log related to QoS port scheduler. */
57 #define RTE_LOGTYPE_PORT 13 /**< Log related to port. */
58 #define RTE_LOGTYPE_TABLE 14 /**< Log related to table. */
59 #define RTE_LOGTYPE_PIPELINE 15 /**< Log related to pipeline. */
60 #define RTE_LOGTYPE_MBUF 16 /**< Log related to mbuf. */
61 #define RTE_LOGTYPE_CRYPTODEV 17 /**< Log related to cryptodev. */
62 #define RTE_LOGTYPE_EFD 18 /**< Log related to EFD. */
63 #define RTE_LOGTYPE_EVENTDEV 19 /**< Log related to eventdev. */
64 #define RTE_LOGTYPE_GSO 20 /**< Log related to GSO. */
66 /* these log types can be used in an application */
67 #define RTE_LOGTYPE_USER1 24 /**< User-defined log type 1. */
68 #define RTE_LOGTYPE_USER2 25 /**< User-defined log type 2. */
69 #define RTE_LOGTYPE_USER3 26 /**< User-defined log type 3. */
70 #define RTE_LOGTYPE_USER4 27 /**< User-defined log type 4. */
71 #define RTE_LOGTYPE_USER5 28 /**< User-defined log type 5. */
72 #define RTE_LOGTYPE_USER6 29 /**< User-defined log type 6. */
73 #define RTE_LOGTYPE_USER7 30 /**< User-defined log type 7. */
74 #define RTE_LOGTYPE_USER8 31 /**< User-defined log type 8. */
76 /** First identifier for extended logs */
77 #define RTE_LOGTYPE_FIRST_EXT_ID 32
79 /* Can't use 0, as it gives compiler warnings */
80 #define RTE_LOG_EMERG 1U /**< System is unusable. */
81 #define RTE_LOG_ALERT 2U /**< Action must be taken immediately. */
82 #define RTE_LOG_CRIT 3U /**< Critical conditions. */
83 #define RTE_LOG_ERR 4U /**< Error conditions. */
84 #define RTE_LOG_WARNING 5U /**< Warning conditions. */
85 #define RTE_LOG_NOTICE 6U /**< Normal but significant condition. */
86 #define RTE_LOG_INFO 7U /**< Informational. */
87 #define RTE_LOG_DEBUG 8U /**< Debug-level messages. */
90 * Change the stream that will be used by the logging system.
92 * This can be done at any time. The f argument represents the stream
93 * to be used to send the logs. If f is NULL, the default output is
97 * Pointer to the stream.
100 * - Negative on error.
102 int rte_openlog_stream(FILE *f);
105 * Set the global log level.
107 * After this call, logs with a level lower or equal than the level
108 * passed as argument will be displayed.
111 * Log level. A value between RTE_LOG_EMERG (1) and RTE_LOG_DEBUG (8).
113 void rte_log_set_global_level(uint32_t level);
116 * Get the global log level.
119 * The current global log level.
121 uint32_t rte_log_get_global_level(void);
124 * Get the log level for a given type.
127 * The log type identifier.
129 * 0 on success, a negative value if logtype is invalid.
131 int rte_log_get_level(uint32_t logtype);
134 * Set the log level for a given type based on shell pattern.
137 * The match pattern identifying the log type.
139 * The level to be set.
141 * 0 on success, a negative value if level is invalid.
143 int rte_log_set_level_pattern(const char *pattern, uint32_t level);
146 * Set the log level for a given type based on regular expression.
149 * The regular expression identifying the log type.
151 * The level to be set.
153 * 0 on success, a negative value if level is invalid.
155 int rte_log_set_level_regexp(const char *regex, uint32_t level);
158 * Set the log level for a given type.
161 * The log type identifier.
163 * The level to be set.
165 * 0 on success, a negative value if logtype or level is invalid.
167 int rte_log_set_level(uint32_t logtype, uint32_t level);
170 * Get the current loglevel for the message being processed.
172 * Before calling the user-defined stream for logging, the log
173 * subsystem sets a per-lcore variable containing the loglevel and the
174 * logtype of the message being processed. This information can be
175 * accessed by the user-defined log output function through this
179 * The loglevel of the message being processed.
181 int rte_log_cur_msg_loglevel(void);
184 * Get the current logtype for the message being processed.
186 * Before calling the user-defined stream for logging, the log
187 * subsystem sets a per-lcore variable containing the loglevel and the
188 * logtype of the message being processed. This information can be
189 * accessed by the user-defined log output function through this
193 * The logtype of the message being processed.
195 int rte_log_cur_msg_logtype(void);
198 * Register a dynamic log type
200 * If a log is already registered with the same type, the returned value
201 * is the same than the previous one.
204 * The string identifying the log type.
206 * - >0: success, the returned value is the log type identifier.
207 * - (-ENOMEM): cannot allocate memory.
209 int rte_log_register(const char *name);
213 * @b EXPERIMENTAL: this API may change without prior notice
215 * Register a dynamic log type and try to pick its level from EAL options
217 * rte_log_register() is called inside. If successful, the function tries
218 * to search for matching regexp in the list of EAL log level options and
219 * pick the level from the last matching entry. If nothing can be applied
220 * from the list, the level will be set to the user-defined default value.
223 * Name for the log type to be registered
225 * Fallback level to be set if the global list has no matching options
227 * - >=0: the newly registered log type
228 * - <0: rte_log_register() error value
231 int rte_log_register_type_and_pick_level(const char *name, uint32_t level_def);
234 * Dump log information.
236 * Dump the global level and the registered log types.
239 * The output stream where the dump should be sent.
241 void rte_log_dump(FILE *f);
244 * Generates a log message.
246 * The message will be sent in the stream defined by the previous call
247 * to rte_openlog_stream().
249 * The level argument determines if the log should be displayed or
250 * not, depending on the global rte_logs variable.
252 * The preferred alternative is the RTE_LOG() because it adds the
253 * level and type in the logged string.
256 * Log level. A value between RTE_LOG_EMERG (1) and RTE_LOG_DEBUG (8).
258 * The log type, for example, RTE_LOGTYPE_EAL.
260 * The format string, as in printf(3), followed by the variable arguments
261 * required by the format.
264 * - Negative on error.
266 int rte_log(uint32_t level, uint32_t logtype, const char *format, ...)
268 #if (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ > 2))
269 __attribute__((cold))
272 __attribute__((format(printf, 3, 4)));
275 * Generates a log message.
277 * The message will be sent in the stream defined by the previous call
278 * to rte_openlog_stream().
280 * The level argument determines if the log should be displayed or
281 * not, depending on the global rte_logs variable. A trailing
282 * newline may be added if needed.
284 * The preferred alternative is the RTE_LOG() because it adds the
285 * level and type in the logged string.
288 * Log level. A value between RTE_LOG_EMERG (1) and RTE_LOG_DEBUG (8).
290 * The log type, for example, RTE_LOGTYPE_EAL.
292 * The format string, as in printf(3), followed by the variable arguments
293 * required by the format.
295 * The va_list of the variable arguments required by the format.
298 * - Negative on error.
300 int rte_vlog(uint32_t level, uint32_t logtype, const char *format, va_list ap)
301 __attribute__((format(printf,3,0)));
304 * Generates a log message.
306 * The RTE_LOG() is a helper that prefixes the string with the log level
307 * and type, and call rte_log().
310 * Log level. A value between EMERG (1) and DEBUG (8). The short name is
311 * expanded by the macro, so it cannot be an integer value.
313 * The log type, for example, EAL. The short name is expanded by the
314 * macro, so it cannot be an integer value.
316 * The fmt string, as in printf(3), followed by the variable arguments
317 * required by the format.
320 * - Negative on error.
322 #define RTE_LOG(l, t, ...) \
323 rte_log(RTE_LOG_ ## l, \
324 RTE_LOGTYPE_ ## t, # t ": " __VA_ARGS__)
327 * Generates a log message for data path.
329 * Similar to RTE_LOG(), except that it is removed at compilation time
330 * if the RTE_LOG_DP_LEVEL configuration option is lower than the log
334 * Log level. A value between EMERG (1) and DEBUG (8). The short name is
335 * expanded by the macro, so it cannot be an integer value.
337 * The log type, for example, EAL. The short name is expanded by the
338 * macro, so it cannot be an integer value.
340 * The fmt string, as in printf(3), followed by the variable arguments
341 * required by the format.
344 * - Negative on error.
346 #define RTE_LOG_DP(l, t, ...) \
347 (void)((RTE_LOG_ ## l <= RTE_LOG_DP_LEVEL) ? \
348 rte_log(RTE_LOG_ ## l, \
349 RTE_LOGTYPE_ ## t, # t ": " __VA_ARGS__) : \
356 #endif /* _RTE_LOG_H_ */