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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2017 Intel Corporation
*/
#ifndef _RTE_LOG_H_
#define _RTE_LOG_H_
/**
* @file
*
* RTE Logs API
*
* This file provides a log API to RTE applications.
*/
#ifdef __cplusplus
extern "C" {
#endif
#include <stdint.h>
#include <stdio.h>
#include <stdarg.h>
#include <rte_common.h>
#include <rte_config.h>
struct rte_log_dynamic_type;
/** The rte_log structure. */
struct rte_logs {
uint32_t type; /**< Bitfield with enabled logs. */
uint32_t level; /**< Log level. */
FILE *file; /**< Output file set by rte_openlog_stream, or NULL. */
size_t dynamic_types_len;
struct rte_log_dynamic_type *dynamic_types;
};
/** Global log informations */
extern struct rte_logs rte_logs;
/* SDK log type */
#define RTE_LOGTYPE_EAL 0 /**< Log related to eal. */
#define RTE_LOGTYPE_MALLOC 1 /**< Log related to malloc. */
#define RTE_LOGTYPE_RING 2 /**< Log related to ring. */
#define RTE_LOGTYPE_MEMPOOL 3 /**< Log related to mempool. */
#define RTE_LOGTYPE_TIMER 4 /**< Log related to timers. */
#define RTE_LOGTYPE_PMD 5 /**< Log related to poll mode driver. */
#define RTE_LOGTYPE_HASH 6 /**< Log related to hash table. */
#define RTE_LOGTYPE_LPM 7 /**< Log related to LPM. */
#define RTE_LOGTYPE_KNI 8 /**< Log related to KNI. */
#define RTE_LOGTYPE_ACL 9 /**< Log related to ACL. */
#define RTE_LOGTYPE_POWER 10 /**< Log related to power. */
#define RTE_LOGTYPE_METER 11 /**< Log related to QoS meter. */
#define RTE_LOGTYPE_SCHED 12 /**< Log related to QoS port scheduler. */
#define RTE_LOGTYPE_PORT 13 /**< Log related to port. */
#define RTE_LOGTYPE_TABLE 14 /**< Log related to table. */
#define RTE_LOGTYPE_PIPELINE 15 /**< Log related to pipeline. */
#define RTE_LOGTYPE_MBUF 16 /**< Log related to mbuf. */
#define RTE_LOGTYPE_CRYPTODEV 17 /**< Log related to cryptodev. */
#define RTE_LOGTYPE_EFD 18 /**< Log related to EFD. */
#define RTE_LOGTYPE_EVENTDEV 19 /**< Log related to eventdev. */
#define RTE_LOGTYPE_GSO 20 /**< Log related to GSO. */
/* these log types can be used in an application */
#define RTE_LOGTYPE_USER1 24 /**< User-defined log type 1. */
#define RTE_LOGTYPE_USER2 25 /**< User-defined log type 2. */
#define RTE_LOGTYPE_USER3 26 /**< User-defined log type 3. */
#define RTE_LOGTYPE_USER4 27 /**< User-defined log type 4. */
#define RTE_LOGTYPE_USER5 28 /**< User-defined log type 5. */
#define RTE_LOGTYPE_USER6 29 /**< User-defined log type 6. */
#define RTE_LOGTYPE_USER7 30 /**< User-defined log type 7. */
#define RTE_LOGTYPE_USER8 31 /**< User-defined log type 8. */
/** First identifier for extended logs */
#define RTE_LOGTYPE_FIRST_EXT_ID 32
/* Can't use 0, as it gives compiler warnings */
#define RTE_LOG_EMERG 1U /**< System is unusable. */
#define RTE_LOG_ALERT 2U /**< Action must be taken immediately. */
#define RTE_LOG_CRIT 3U /**< Critical conditions. */
#define RTE_LOG_ERR 4U /**< Error conditions. */
#define RTE_LOG_WARNING 5U /**< Warning conditions. */
#define RTE_LOG_NOTICE 6U /**< Normal but significant condition. */
#define RTE_LOG_INFO 7U /**< Informational. */
#define RTE_LOG_DEBUG 8U /**< Debug-level messages. */
/**
* Change the stream that will be used by the logging system.
*
* This can be done at any time. The f argument represents the stream
* to be used to send the logs. If f is NULL, the default output is
* used (stderr).
*
* @param f
* Pointer to the stream.
* @return
* - 0 on success.
* - Negative on error.
*/
int rte_openlog_stream(FILE *f);
/**
* Set the global log level.
*
* After this call, logs with a level lower or equal than the level
* passed as argument will be displayed.
*
* @param level
* Log level. A value between RTE_LOG_EMERG (1) and RTE_LOG_DEBUG (8).
*/
void rte_log_set_global_level(uint32_t level);
/**
* Get the global log level.
*
* @return
* The current global log level.
*/
uint32_t rte_log_get_global_level(void);
/**
* Get the log level for a given type.
*
* @param logtype
* The log type identifier.
* @return
* 0 on success, a negative value if logtype is invalid.
*/
int rte_log_get_level(uint32_t logtype);
/**
* Set the log level for a given type.
*
* @param pattern
* The regexp identifying the log type.
* @param level
* The level to be set.
* @return
* 0 on success, a negative value if level is invalid.
*/
int rte_log_set_level_regexp(const char *pattern, uint32_t level);
/**
* Set the log level for a given type.
*
* @param logtype
* The log type identifier.
* @param level
* The level to be set.
* @return
* 0 on success, a negative value if logtype or level is invalid.
*/
int rte_log_set_level(uint32_t logtype, uint32_t level);
/**
* Get the current loglevel for the message being processed.
*
* Before calling the user-defined stream for logging, the log
* subsystem sets a per-lcore variable containing the loglevel and the
* logtype of the message being processed. This information can be
* accessed by the user-defined log output function through this
* function.
*
* @return
* The loglevel of the message being processed.
*/
int rte_log_cur_msg_loglevel(void);
/**
* Get the current logtype for the message being processed.
*
* Before calling the user-defined stream for logging, the log
* subsystem sets a per-lcore variable containing the loglevel and the
* logtype of the message being processed. This information can be
* accessed by the user-defined log output function through this
* function.
*
* @return
* The logtype of the message being processed.
*/
int rte_log_cur_msg_logtype(void);
/**
* Register a dynamic log type
*
* If a log is already registered with the same type, the returned value
* is the same than the previous one.
*
* @param name
* The string identifying the log type.
* @return
* - >0: success, the returned value is the log type identifier.
* - (-ENOMEM): cannot allocate memory.
*/
int rte_log_register(const char *name);
/**
* Dump log information.
*
* Dump the global level and the registered log types.
*
* @param f
* The output stream where the dump should be sent.
*/
void rte_log_dump(FILE *f);
/**
* Generates a log message.
*
* The message will be sent in the stream defined by the previous call
* to rte_openlog_stream().
*
* The level argument determines if the log should be displayed or
* not, depending on the global rte_logs variable.
*
* The preferred alternative is the RTE_LOG() because it adds the
* level and type in the logged string.
*
* @param level
* Log level. A value between RTE_LOG_EMERG (1) and RTE_LOG_DEBUG (8).
* @param logtype
* The log type, for example, RTE_LOGTYPE_EAL.
* @param format
* The format string, as in printf(3), followed by the variable arguments
* required by the format.
* @return
* - 0: Success.
* - Negative on error.
*/
int rte_log(uint32_t level, uint32_t logtype, const char *format, ...)
#ifdef __GNUC__
#if (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ > 2))
__attribute__((cold))
#endif
#endif
__attribute__((format(printf, 3, 4)));
/**
* Generates a log message.
*
* The message will be sent in the stream defined by the previous call
* to rte_openlog_stream().
*
* The level argument determines if the log should be displayed or
* not, depending on the global rte_logs variable. A trailing
* newline may be added if needed.
*
* The preferred alternative is the RTE_LOG() because it adds the
* level and type in the logged string.
*
* @param level
* Log level. A value between RTE_LOG_EMERG (1) and RTE_LOG_DEBUG (8).
* @param logtype
* The log type, for example, RTE_LOGTYPE_EAL.
* @param format
* The format string, as in printf(3), followed by the variable arguments
* required by the format.
* @param ap
* The va_list of the variable arguments required by the format.
* @return
* - 0: Success.
* - Negative on error.
*/
int rte_vlog(uint32_t level, uint32_t logtype, const char *format, va_list ap)
__attribute__((format(printf,3,0)));
/**
* Generates a log message.
*
* The RTE_LOG() is a helper that prefixes the string with the log level
* and type, and call rte_log().
*
* @param l
* Log level. A value between EMERG (1) and DEBUG (8). The short name is
* expanded by the macro, so it cannot be an integer value.
* @param t
* The log type, for example, EAL. The short name is expanded by the
* macro, so it cannot be an integer value.
* @param ...
* The fmt string, as in printf(3), followed by the variable arguments
* required by the format.
* @return
* - 0: Success.
* - Negative on error.
*/
#define RTE_LOG(l, t, ...) \
rte_log(RTE_LOG_ ## l, \
RTE_LOGTYPE_ ## t, # t ": " __VA_ARGS__)
/**
* Generates a log message for data path.
*
* Similar to RTE_LOG(), except that it is removed at compilation time
* if the RTE_LOG_DP_LEVEL configuration option is lower than the log
* level argument.
*
* @param l
* Log level. A value between EMERG (1) and DEBUG (8). The short name is
* expanded by the macro, so it cannot be an integer value.
* @param t
* The log type, for example, EAL. The short name is expanded by the
* macro, so it cannot be an integer value.
* @param ...
* The fmt string, as in printf(3), followed by the variable arguments
* required by the format.
* @return
* - 0: Success.
* - Negative on error.
*/
#define RTE_LOG_DP(l, t, ...) \
(void)((RTE_LOG_ ## l <= RTE_LOG_DP_LEVEL) ? \
rte_log(RTE_LOG_ ## l, \
RTE_LOGTYPE_ ## t, # t ": " __VA_ARGS__) : \
0)
#ifdef __cplusplus
}
#endif
#endif /* _RTE_LOG_H_ */
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