[PATCH v4 1/8] eal: cleanup plugins data

[okaya]

From: Stephen Hemminger <step...@networkplumber.org>

When rte_eal_cleanup is called walk through the list of shared
objects loaded, and close them and free the data structure.

Signed-off-by: Stephen Hemminger <step...@networkplumber.org>
Signed-off-by: Sinan Kaya <ok...@kernel.org>
---
 lib/eal/common/eal_common_options.c | 12 ++++++++++++
 lib/eal/common/eal_options.h        |  1 +
 lib/eal/linux/eal.c                 |  2 ++
 3 files changed, 15 insertions(+)

diff --git a/lib/eal/common/eal_common_options.c 
b/lib/eal/common/eal_common_options.c
index 062f1d8d9c..209b6edd76 100644
--- a/lib/eal/common/eal_common_options.c
+++ b/lib/eal/common/eal_common_options.c
@@ -244,6 +244,18 @@ eal_save_args(int argc, char **argv)
 }
 #endif
 
+void
+eal_plugins_cleanup(void)
+{
+       struct shared_driver *solib, *tmp;
+
+       RTE_TAILQ_FOREACH_SAFE(solib, &solib_list, next, tmp) {
+               if (solib->lib_handle)
+                       dlclose(solib->lib_handle);
+               free(solib);
+       }
+}
+
 static int
 eal_option_device_add(enum rte_devtype type, const char *optarg)
 {
diff --git a/lib/eal/common/eal_options.h b/lib/eal/common/eal_options.h
index 3cc9cb6412..ddbaafc4f1 100644
--- a/lib/eal/common/eal_options.h
+++ b/lib/eal/common/eal_options.h
@@ -105,6 +105,7 @@ int eal_check_common_options(struct internal_config 
*internal_cfg);
 void eal_common_usage(void);
 enum rte_proc_type_t eal_proc_type_detect(void);
 int eal_plugins_init(void);
+void eal_plugins_cleanup(void);
 int eal_save_args(int argc, char **argv);
 int handle_eal_info_request(const char *cmd, const char *params __rte_unused,
                struct rte_tel_data *d);
diff --git a/lib/eal/linux/eal.c b/lib/eal/linux/eal.c
index c6efd92014..dee649bab3 100644
--- a/lib/eal/linux/eal.c
+++ b/lib/eal/linux/eal.c
@@ -1398,6 +1398,8 @@ rte_eal_cleanup(void)
        eal_trace_fini();
        eal_mp_dev_hotplug_cleanup();
        rte_eal_alarm_cleanup();
+       eal_plugins_cleanup();
+
        /* after this point, any DPDK pointers will become dangling */
        rte_eal_memory_detach();
        rte_eal_malloc_heap_cleanup();
-- 
2.25.1