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42 * This file provides a log API to RTE applications.
53 /** The rte_log structure. */
55 uint32_t type; /**< Bitfield with enabled logs. */
56 uint32_t level; /**< Log level. */
57 FILE *file; /**< Output file set by rte_openlog_stream, or NULL. */
60 /** Global log informations */
61 extern struct rte_logs rte_logs;
64 #define RTE_LOGTYPE_EAL 0x00000001 /**< Log related to eal. */
65 #define RTE_LOGTYPE_MALLOC 0x00000002 /**< Log related to malloc. */
66 #define RTE_LOGTYPE_RING 0x00000004 /**< Log related to ring. */
67 #define RTE_LOGTYPE_MEMPOOL 0x00000008 /**< Log related to mempool. */
68 #define RTE_LOGTYPE_TIMER 0x00000010 /**< Log related to timers. */
69 #define RTE_LOGTYPE_PMD 0x00000020 /**< Log related to poll mode driver. */
70 #define RTE_LOGTYPE_HASH 0x00000040 /**< Log related to hash table. */
71 #define RTE_LOGTYPE_LPM 0x00000080 /**< Log related to LPM. */
72 #define RTE_LOGTYPE_KNI 0x00000100 /**< Log related to KNI. */
73 #define RTE_LOGTYPE_ACL 0x00000200 /**< Log related to ACL. */
74 #define RTE_LOGTYPE_POWER 0x00000400 /**< Log related to power. */
75 #define RTE_LOGTYPE_METER 0x00000800 /**< Log related to QoS meter. */
76 #define RTE_LOGTYPE_SCHED 0x00001000 /**< Log related to QoS port scheduler. */
77 #define RTE_LOGTYPE_PORT 0x00002000 /**< Log related to port. */
78 #define RTE_LOGTYPE_TABLE 0x00004000 /**< Log related to table. */
79 #define RTE_LOGTYPE_PIPELINE 0x00008000 /**< Log related to pipeline. */
80 #define RTE_LOGTYPE_MBUF 0x00010000 /**< Log related to mbuf. */
81 #define RTE_LOGTYPE_CRYPTODEV 0x00020000 /**< Log related to cryptodev. */
82 #define RTE_LOGTYPE_EFD 0x00040000 /**< Log related to EFD. */
84 /* these log types can be used in an application */
85 #define RTE_LOGTYPE_USER1 0x01000000 /**< User-defined log type 1. */
86 #define RTE_LOGTYPE_USER2 0x02000000 /**< User-defined log type 2. */
87 #define RTE_LOGTYPE_USER3 0x04000000 /**< User-defined log type 3. */
88 #define RTE_LOGTYPE_USER4 0x08000000 /**< User-defined log type 4. */
89 #define RTE_LOGTYPE_USER5 0x10000000 /**< User-defined log type 5. */
90 #define RTE_LOGTYPE_USER6 0x20000000 /**< User-defined log type 6. */
91 #define RTE_LOGTYPE_USER7 0x40000000 /**< User-defined log type 7. */
92 #define RTE_LOGTYPE_USER8 0x80000000 /**< User-defined log type 8. */
94 /* Can't use 0, as it gives compiler warnings */
95 #define RTE_LOG_EMERG 1U /**< System is unusable. */
96 #define RTE_LOG_ALERT 2U /**< Action must be taken immediately. */
97 #define RTE_LOG_CRIT 3U /**< Critical conditions. */
98 #define RTE_LOG_ERR 4U /**< Error conditions. */
99 #define RTE_LOG_WARNING 5U /**< Warning conditions. */
100 #define RTE_LOG_NOTICE 6U /**< Normal but significant condition. */
101 #define RTE_LOG_INFO 7U /**< Informational. */
102 #define RTE_LOG_DEBUG 8U /**< Debug-level messages. */
105 * Change the stream that will be used by the logging system.
107 * This can be done at any time. The f argument represents the stream
108 * to be used to send the logs. If f is NULL, the default output is
112 * Pointer to the stream.
115 * - Negative on error.
117 int rte_openlog_stream(FILE *f);
120 * Set the global log level.
122 * After this call, logs with a level lower or equal than the level
123 * passed as argument will be displayed.
126 * Log level. A value between RTE_LOG_EMERG (1) and RTE_LOG_DEBUG (8).
128 void rte_set_log_level(uint32_t level);
131 * Get the global log level.
133 uint32_t rte_get_log_level(void);
136 * Enable or disable the log type.
139 * Log type, for example, RTE_LOGTYPE_EAL.
141 * True for enable; false for disable.
143 void rte_set_log_type(uint32_t type, int enable);
146 * Get the global log type.
148 uint32_t rte_get_log_type(void);
151 * Get the current loglevel for the message being processed.
153 * Before calling the user-defined stream for logging, the log
154 * subsystem sets a per-lcore variable containing the loglevel and the
155 * logtype of the message being processed. This information can be
156 * accessed by the user-defined log output function through this
160 * The loglevel of the message being processed.
162 int rte_log_cur_msg_loglevel(void);
165 * Get the current logtype for the message being processed.
167 * Before calling the user-defined stream for logging, the log
168 * subsystem sets a per-lcore variable containing the loglevel and the
169 * logtype of the message being processed. This information can be
170 * accessed by the user-defined log output function through this
174 * The logtype of the message being processed.
176 int rte_log_cur_msg_logtype(void);
179 * Generates a log message.
181 * The message will be sent in the stream defined by the previous call
182 * to rte_openlog_stream().
184 * The level argument determines if the log should be displayed or
185 * not, depending on the global rte_logs variable.
187 * The preferred alternative is the RTE_LOG() because it adds the
188 * level and type in the logged string.
191 * Log level. A value between RTE_LOG_EMERG (1) and RTE_LOG_DEBUG (8).
193 * The log type, for example, RTE_LOGTYPE_EAL.
195 * The format string, as in printf(3), followed by the variable arguments
196 * required by the format.
199 * - Negative on error.
201 int rte_log(uint32_t level, uint32_t logtype, const char *format, ...)
203 #if (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ > 2))
204 __attribute__((cold))
207 __attribute__((format(printf, 3, 4)));
210 * Generates a log message.
212 * The message will be sent in the stream defined by the previous call
213 * to rte_openlog_stream().
215 * The level argument determines if the log should be displayed or
216 * not, depending on the global rte_logs variable. A trailing
217 * newline may be added if needed.
219 * The preferred alternative is the RTE_LOG() because it adds the
220 * level and type in the logged string.
223 * Log level. A value between RTE_LOG_EMERG (1) and RTE_LOG_DEBUG (8).
225 * The log type, for example, RTE_LOGTYPE_EAL.
227 * The format string, as in printf(3), followed by the variable arguments
228 * required by the format.
230 * The va_list of the variable arguments required by the format.
233 * - Negative on error.
235 int rte_vlog(uint32_t level, uint32_t logtype, const char *format, va_list ap)
236 __attribute__((format(printf,3,0)));
239 * Generates a log message.
241 * The RTE_LOG() is a helper that prefixes the string with the log level
242 * and type, and call rte_log().
245 * Log level. A value between EMERG (1) and DEBUG (8). The short name is
246 * expanded by the macro, so it cannot be an integer value.
248 * The log type, for example, EAL. The short name is expanded by the
249 * macro, so it cannot be an integer value.
251 * The fmt string, as in printf(3), followed by the variable arguments
252 * required by the format.
255 * - Negative on error.
257 #define RTE_LOG(l, t, ...) \
258 rte_log(RTE_LOG_ ## l, \
259 RTE_LOGTYPE_ ## t, # t ": " __VA_ARGS__)
262 * Generates a log message for data path.
264 * Similar to RTE_LOG(), except that it is removed at compilation time
265 * if the RTE_LOG_DP_LEVEL configuration option is lower than the log
269 * Log level. A value between EMERG (1) and DEBUG (8). The short name is
270 * expanded by the macro, so it cannot be an integer value.
272 * The log type, for example, EAL. The short name is expanded by the
273 * macro, so it cannot be an integer value.
275 * The fmt string, as in printf(3), followed by the variable arguments
276 * required by the format.
279 * - Negative on error.
281 #define RTE_LOG_DP(l, t, ...) \
282 (void)((RTE_LOG_ ## l <= RTE_LOG_DP_LEVEL) ? \
283 rte_log(RTE_LOG_ ## l, \
284 RTE_LOGTYPE_ ## t, # t ": " __VA_ARGS__) : \
291 #endif /* _RTE_LOG_H_ */