[PATCH v4 3/5] eal: vfio: cleanup the mp sync handle

[Stephen Hemminger <stephen@networkplumber.org>]

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

Fixes: edf73dd33072 ("ipc: handle unsupported IPC in action register")
Cc: anatoly.burakov@intel.com
Cc: stable@dpdk.org
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Anatoly Burakov <anatoly.burakov@intel.com>
---
 lib/eal/linux/eal.c              | 4 ++++
 lib/eal/linux/eal_vfio.h         | 1 +
 lib/eal/linux/eal_vfio_mp_sync.c | 8 ++++++++
 3 files changed, 13 insertions(+)

diff --git a/lib/eal/linux/eal.c b/lib/eal/linux/eal.c
index b67030b2792e..ad8f130b509d 100644
--- a/lib/eal/linux/eal.c
+++ b/lib/eal/linux/eal.c
@@ -1362,7 +1362,11 @@ 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();
 	/* after this point, any DPDK pointers will become dangling */
 	rte_eal_memory_detach();
diff --git a/lib/eal/linux/eal_vfio.h b/lib/eal/linux/eal_vfio.h
index 6ebaca6a0cbf..921ee595388c 100644
--- a/lib/eal/linux/eal_vfio.h
+++ b/lib/eal/linux/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"
 
diff --git a/lib/eal/linux/eal_vfio_mp_sync.c b/lib/eal/linux/eal_vfio_mp_sync.c
index a2accfab3a38..d12bbaee648b 100644
--- a/lib/eal/linux/eal_vfio_mp_sync.c
+++ b/lib/eal/linux/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
-- 
2.30.2