Imported Upstream version 16.04

Change-Id: I77eadcd8538a9122e4773cbe55b24033dc451757
Signed-off-by: C.J. Collier <cjcollier@linuxfoundation.org>

1 files changed, 311 insertions, 0 deletions

diff --git a/lib/librte_eal/common/include/rte_log.h b/lib/librte_eal/common/include/rte_log.h
new file mode 100644
index 00000000..2e47e7f6
--- /dev/null
+++ b/lib/librte_eal/common/include/rte_log.h
@@ -0,0 +1,311 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ *   All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *     * Neither the name of Intel Corporation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#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>
+
+/** The rte_log structure. */
+struct rte_logs {
+	uint32_t type;  /**< Bitfield with enabled logs. */
+	uint32_t level; /**< Log level. */
+	FILE *file;     /**< Pointer to current FILE* for logs. */
+};
+
+/** Global log informations */
+extern struct rte_logs rte_logs;
+
+/* SDK log type */
+#define RTE_LOGTYPE_EAL     0x00000001 /**< Log related to eal. */
+#define RTE_LOGTYPE_MALLOC  0x00000002 /**< Log related to malloc. */
+#define RTE_LOGTYPE_RING    0x00000004 /**< Log related to ring. */
+#define RTE_LOGTYPE_MEMPOOL 0x00000008 /**< Log related to mempool. */
+#define RTE_LOGTYPE_TIMER   0x00000010 /**< Log related to timers. */
+#define RTE_LOGTYPE_PMD     0x00000020 /**< Log related to poll mode driver. */
+#define RTE_LOGTYPE_HASH    0x00000040 /**< Log related to hash table. */
+#define RTE_LOGTYPE_LPM     0x00000080 /**< Log related to LPM. */
+#define RTE_LOGTYPE_KNI     0x00000100 /**< Log related to KNI. */
+#define RTE_LOGTYPE_ACL     0x00000200 /**< Log related to ACL. */
+#define RTE_LOGTYPE_POWER   0x00000400 /**< Log related to power. */
+#define RTE_LOGTYPE_METER   0x00000800 /**< Log related to QoS meter. */
+#define RTE_LOGTYPE_SCHED   0x00001000 /**< Log related to QoS port scheduler. */
+#define RTE_LOGTYPE_PORT    0x00002000 /**< Log related to port. */
+#define RTE_LOGTYPE_TABLE   0x00004000 /**< Log related to table. */
+#define RTE_LOGTYPE_PIPELINE 0x00008000 /**< Log related to pipeline. */
+#define RTE_LOGTYPE_MBUF    0x00010000 /**< Log related to mbuf. */
+#define RTE_LOGTYPE_CRYPTODEV 0x00020000 /**< Log related to cryptodev. */
+
+/* these log types can be used in an application */
+#define RTE_LOGTYPE_USER1   0x01000000 /**< User-defined log type 1. */
+#define RTE_LOGTYPE_USER2   0x02000000 /**< User-defined log type 2. */
+#define RTE_LOGTYPE_USER3   0x04000000 /**< User-defined log type 3. */
+#define RTE_LOGTYPE_USER4   0x08000000 /**< User-defined log type 4. */
+#define RTE_LOGTYPE_USER5   0x10000000 /**< User-defined log type 5. */
+#define RTE_LOGTYPE_USER6   0x20000000 /**< User-defined log type 6. */
+#define RTE_LOGTYPE_USER7   0x40000000 /**< User-defined log type 7. */
+#define RTE_LOGTYPE_USER8   0x80000000 /**< User-defined log type 8. */
+
+/* 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.             */
+
+/** The default log stream. */
+extern FILE *eal_default_log_stream;
+
+/**
+ * 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, all logs that are lower or equal than level and
+ * lower or equal than the RTE_LOG_LEVEL configuration option will be
+ * displayed.
+ *
+ * @param level
+ *   Log level. A value between RTE_LOG_EMERG (1) and RTE_LOG_DEBUG (8).
+ */
+void rte_set_log_level(uint32_t level);
+
+/**
+ * Get the global log level.
+ */
+uint32_t rte_get_log_level(void);
+
+/**
+ * Enable or disable the log type.
+ *
+ * @param type
+ *   Log type, for example, RTE_LOGTYPE_EAL.
+ * @param enable
+ *   True for enable; false for disable.
+ */
+void rte_set_log_type(uint32_t type, int enable);
+
+/**
+ * Get the global log type.
+ */
+uint32_t rte_get_log_type(void);
+
+/**
+ * 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);
+
+/**
+ * Enable or disable the history (enabled by default)
+ *
+ * @param enable
+ *   true to enable, or 0 to disable history.
+ */
+void rte_log_set_history(int enable);
+
+/**
+ * Dump the log history to a file
+ *
+ * @param f
+ *   A pointer to a file for output
+ */
+void rte_log_dump_history(FILE *f);
+
+/**
+ * Add a log message to the history.
+ *
+ * This function can be called from a user-defined log stream. It adds
+ * the given message in the history that can be dumped using
+ * rte_log_dump_history().
+ *
+ * @param buf
+ *   A data buffer containing the message to be saved in the history.
+ * @param size
+ *   The length of the data buffer.
+ * @return
+ *   - 0: Success.
+ *   - (-ENOBUFS) if there is no room to store the message.
+ */
+int rte_log_add_in_history(const char *buf, size_t size);
+
+/**
+ * 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() function because debug logs may
+ * be removed at compilation time if optimization is enabled. Moreover,
+ * logs are automatically prefixed by type when using the macro.
+ *
+ * @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 debug logs may be
+ * removed at compilation time.
+ *
+ * @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 equivalent to rte_log() with two differences:
+
+ * - RTE_LOG() can be used to remove debug logs at compilation time,
+ *   depending on RTE_LOG_LEVEL configuration option, and compilation
+ *   optimization level. If optimization is enabled, the tests
+ *   involving constants only are pre-computed. If compilation is done
+ *   with -O0, these tests will be done at run time.
+ * - The log level and log type names are smaller, for example:
+ *   RTE_LOG(INFO, EAL, "this is a %s", "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, ...)					\
+	(void)((RTE_LOG_ ## l <= RTE_LOG_LEVEL) ?		\
+	 rte_log(RTE_LOG_ ## l,					\
+		 RTE_LOGTYPE_ ## t, # t ": " __VA_ARGS__) :	\
+	 0)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _RTE_LOG_H_ */