935439234b
This patch adds the unlinking/unmapping of shared host memory
on termination of l2fwd-keepalive. Previously it was only
cleaned on re-running of the example application.
Fixes: e64833f227 ("examples/l2fwd-keepalive: add sample application")
Signed-off-by: Remy Horton <remy.horton@intel.com>
Tested-by: Roman Korynkevych <romanx.korynkevych@intel.com>
99 lines
3.3 KiB
C
99 lines
3.3 KiB
C
/*-
|
|
* BSD LICENSE
|
|
*
|
|
* Copyright(c) 2016 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.
|
|
*/
|
|
|
|
#define RTE_KEEPALIVE_SHM_NAME "/dpdk_keepalive_shm_name"
|
|
|
|
#define RTE_KEEPALIVE_SHM_ALIVE 1
|
|
#define RTE_KEEPALIVE_SHM_DEAD 2
|
|
|
|
#include <fcntl.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <sys/mman.h>
|
|
#include <sys/stat.h>
|
|
#include <semaphore.h>
|
|
#include <rte_keepalive.h>
|
|
|
|
/**
|
|
* Keepalive SHM structure.
|
|
*
|
|
* The shared memory allocated by the primary is this size, and contains the
|
|
* information as contained within this struct. A secondary may open the SHM,
|
|
* and read the contents.
|
|
*/
|
|
struct rte_keepalive_shm {
|
|
/** IPC semaphore. Posted when a core dies */
|
|
sem_t core_died;
|
|
|
|
/**
|
|
* Relayed status of each core.
|
|
*/
|
|
enum rte_keepalive_state core_state[RTE_KEEPALIVE_MAXCORES];
|
|
|
|
/**
|
|
* Last-seen-alive timestamps for the cores
|
|
*/
|
|
uint64_t core_last_seen_times[RTE_KEEPALIVE_MAXCORES];
|
|
};
|
|
|
|
/**
|
|
* Create shared host memory keepalive object.
|
|
* @return
|
|
* Pointer to SHM keepalive structure, or NULL on failure.
|
|
*/
|
|
struct rte_keepalive_shm *rte_keepalive_shm_create(void);
|
|
|
|
/**
|
|
* Relays state for given core
|
|
* @param *shm
|
|
* Pointer to SHM keepalive structure.
|
|
* @param id_core
|
|
* Id of core
|
|
* @param core_state
|
|
* State of core
|
|
* @param last_alive
|
|
* Last seen timestamp for core
|
|
*/
|
|
void rte_keepalive_relayed_state(struct rte_keepalive_shm *shm,
|
|
const int id_core, const enum rte_keepalive_state core_state,
|
|
uint64_t last_alive);
|
|
|
|
/** Shutdown cleanup of shared host memory keepalive object.
|
|
* @param *shm
|
|
* Pointer to SHM keepalive structure. May be NULL.
|
|
*
|
|
* If *shm is NULL, this function will only attempt to remove the
|
|
* shared host memory handle and not unmap the underlying memory.
|
|
*/
|
|
void rte_keepalive_shm_cleanup(struct rte_keepalive_shm *ka_shm);
|