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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2014 Intel Corporation
*/
/**
* @file
*
* API for error cause tracking
*/
#ifndef _RTE_ERRNO_H_
#define _RTE_ERRNO_H_
#ifdef __cplusplus
extern "C" {
#endif
#include <rte_per_lcore.h>
RTE_DECLARE_PER_LCORE(int, _rte_errno); /**< Per core error number. */
/**
* Error number value, stored per-thread, which can be queried after
* calls to certain functions to determine why those functions failed.
*
* Uses standard values from errno.h wherever possible, with a small number
* of additional possible values for RTE-specific conditions.
*/
#define rte_errno RTE_PER_LCORE(_rte_errno)
/**
* Function which returns a printable string describing a particular
* error code. For non-RTE-specific error codes, this function returns
* the value from the libc strerror function.
*
* @param errnum
* The error number to be looked up - generally the value of rte_errno
* @return
* A pointer to a thread-local string containing the text describing
* the error.
*/
const char *rte_strerror(int errnum);
#ifndef __ELASTERROR
/**
* Check if we have a defined value for the max system-defined errno values.
* if no max defined, start from 1000 to prevent overlap with standard values
*/
#define __ELASTERROR 1000
#endif
/** Error types */
enum {
RTE_MIN_ERRNO = __ELASTERROR, /**< Start numbering above std errno vals */
E_RTE_SECONDARY, /**< Operation not allowed in secondary processes */
E_RTE_NO_CONFIG, /**< Missing rte_config */
RTE_MAX_ERRNO /**< Max RTE error number */
};
#ifdef __cplusplus
}
#endif
#endif /* _RTE_ERRNO_H_ */
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