[24.03 RFC 2/3] eal: allow export of the cmdline argument parsing options

[Bruce Richardson <bruce.richardson@intel.com>]

Allow other libraries in DPDK to know about the options EAL takes, by
exporting the long and short getopt options via an internal-only
function.

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
---
 lib/eal/common/eal_common_options.c |  9 +++++++++
 lib/eal/include/rte_eal.h           | 14 ++++++++++++++
 lib/eal/version.map                 |  1 +
 3 files changed, 24 insertions(+)

diff --git a/lib/eal/common/eal_common_options.c b/lib/eal/common/eal_common_options.c
index a6d21f1cba..e26f66ea07 100644
--- a/lib/eal/common/eal_common_options.c
+++ b/lib/eal/common/eal_common_options.c
@@ -175,6 +175,15 @@ rte_set_application_usage_hook(rte_usage_hook_t usage_func)
 	return old_func;
 }
 
+__rte_internal
+int
+rte_eal_getopt_params(const char **shortopts, const struct option **longopts)
+{
+	*shortopts = eal_short_options;
+	*longopts = eal_long_options;
+	return 0;
+}
+
 #ifndef RTE_EXEC_ENV_WINDOWS
 static char **eal_args;
 static char **eal_app_args;
diff --git a/lib/eal/include/rte_eal.h b/lib/eal/include/rte_eal.h
index cd318ee141..3bc5447abf 100644
--- a/lib/eal/include/rte_eal.h
+++ b/lib/eal/include/rte_eal.h
@@ -514,6 +514,20 @@ __rte_internal
 int
 rte_eal_parse_coremask(const char *coremask, int *cores);
 
+struct option;
+/**
+ * @internal
+ * Return the getopt parameters used by EAL when parsing cmdline arguments
+ *
+ * @shortopts
+ *   Pointer for the short options for getopt
+ * @longopts
+ *   Pointer for the longer options used by getopt_long
+ */
+__rte_internal
+int
+rte_eal_getopt_params(const char **shortopts, const struct option **longopts);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/lib/eal/version.map b/lib/eal/version.map
index e00a844805..6c0a7145ff 100644
--- a/lib/eal/version.map
+++ b/lib/eal/version.map
@@ -421,6 +421,7 @@ INTERNAL {
 	rte_bus_register;
 	rte_bus_unregister;
 	rte_eal_get_baseaddr;
+	rte_eal_getopt_params;
 	rte_eal_parse_coremask;
 	rte_firmware_read;
 	rte_intr_allow_others;
-- 
2.39.2