vfio: cleanup the multiprocess sync handle

[ upstream commit 6412941ae8d183ead5720f06cd2616f7c523f6a8 ]

When rte_eal_cleanup is called the rte_mp_action for VFIO
should be freed.

Fixes: edf73dd ("ipc: handle unsupported IPC in action register")

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Anatoly Burakov <anatoly.burakov@intel.com>

lib/librte_eal/linux/eal/eal.c

@@ -1323,7 +1323,11 @@ rte_eal_cleanup(void)
 	 */
 	if (rte_eal_process_type() == RTE_PROC_PRIMARY)
 		rte_memseg_walk(mark_freeable, NULL);
+
 	rte_service_finalize();
+#ifdef VFIO_PRESENT
+	vfio_mp_sync_cleanup();
+#endif
 	rte_mp_channel_cleanup();
 	eal_cleanup_config(&internal_config);
 	return 0;

lib/librte_eal/linux/eal/eal_vfio.h

@@ -133,6 +133,7 @@ int
 vfio_has_supported_extensions(int vfio_container_fd);
 
 int vfio_mp_sync_setup(void);
+void vfio_mp_sync_cleanup(void);
 
 #define EAL_VFIO_MP "eal_vfio_mp_sync"
 

lib/librte_eal/linux/eal/eal_vfio_mp_sync.c

@@ -120,4 +120,12 @@ vfio_mp_sync_setup(void)
 	return 0;
 }
 
+void
+vfio_mp_sync_cleanup(void)
+{
+	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+		return;
+
+	rte_mp_action_unregister(EAL_VFIO_MP);
+}
 #endif