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lib
librte_eal
common
include
rte_dev.h
Go to the documentation of this file.
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/*-
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* BSD LICENSE
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*
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* Copyright(c) 2014 6WIND S.A.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of 6WIND S.A. nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _RTE_DEV_H_
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#define _RTE_DEV_H_
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#ifdef __cplusplus
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extern
"C"
{
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#endif
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#include <stdio.h>
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#include <sys/queue.h>
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#include <
rte_log.h
>
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__attribute__((format(printf, 2, 0)))
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static inline
void
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rte_pmd_debug_trace(const
char
*func_name, const
char
*fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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char
buffer[vsnprintf(NULL, 0, fmt, ap) + 1];
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va_end(ap);
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va_start(ap, fmt);
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vsnprintf(buffer,
sizeof
(buffer), fmt, ap);
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va_end(ap);
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rte_log
(
RTE_LOG_ERR
,
RTE_LOGTYPE_PMD
,
"%s: %s"
, func_name, buffer);
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}
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/* Macros for checking for restricting functions to primary instance only */
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#define RTE_PROC_PRIMARY_OR_ERR_RET(retval) do { \
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if (rte_eal_process_type() != RTE_PROC_PRIMARY) { \
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RTE_PMD_DEBUG_TRACE("Cannot run in secondary processes\n"); \
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return retval; \
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} \
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} while (0)
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#define RTE_PROC_PRIMARY_OR_RET() do { \
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if (rte_eal_process_type() != RTE_PROC_PRIMARY) { \
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RTE_PMD_DEBUG_TRACE("Cannot run in secondary processes\n"); \
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return; \
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} \
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} while (0)
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/* Macros to check for invalid function pointers */
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#define RTE_FUNC_PTR_OR_ERR_RET(func, retval) do { \
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if ((func) == NULL) { \
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RTE_PMD_DEBUG_TRACE("Function not supported\n"); \
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return retval; \
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} \
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} while (0)
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#define RTE_FUNC_PTR_OR_RET(func) do { \
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if ((func) == NULL) { \
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RTE_PMD_DEBUG_TRACE("Function not supported\n"); \
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return; \
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} \
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} while (0)
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TAILQ_HEAD
(rte_driver_list,
rte_driver
);
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typedef
int (
rte_dev_init_t
)(
const
char
*name,
const
char
*args);
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typedef
int (
rte_dev_uninit_t
)(
const
char
*name);
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enum
pmd_type
{
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PMD_VDEV = 0,
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PMD_PDEV = 1,
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};
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struct
rte_driver
{
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TAILQ_ENTRY
(
rte_driver
) next;
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enum
pmd_type
type
;
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const
char
*
name
;
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rte_dev_init_t
*
init
;
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rte_dev_uninit_t
*
uninit
;
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};
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void
rte_eal_driver_register
(
struct
rte_driver
*driver);
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void
rte_eal_driver_unregister
(
struct
rte_driver
*driver);
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int
rte_eal_dev_init
(
void
);
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int
rte_eal_vdev_init
(
const
char
*name,
const
char
*args);
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int
rte_eal_vdev_uninit
(
const
char
*name);
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#define PMD_REGISTER_DRIVER(d)\
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void devinitfn_ ##d(void);\
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void __attribute__((constructor, used)) devinitfn_ ##d(void)\
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{\
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rte_eal_driver_register(&d);\
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}
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#ifdef __cplusplus
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}
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#endif
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#endif
/* _RTE_VDEV_H_ */
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