eal: add C++ include guard for reciprocal header

Add missing extern "C" linkage for rte_reciprocal.h consistent with
other eal headers.

Fixes: ffe3ec811ef5 ("sched: introduce reciprocal divide")
Cc: stable@dpdk.org
Signed-off-by: Tyler Retzlaff <roretzla@linux.microsoft.com>
Acked-by: David Marchand <david.marchand@redhat.com>

diff --git a/lib/librte_eal/include/rte_reciprocal.h b/lib/librte_eal/include/rte_reciprocal.h
index 735adb0..fa1cb48 100644 (file)
--- a/lib/librte_eal/include/rte_reciprocal.h
+++ b/lib/librte_eal/include/rte_reciprocal.h
@@ -29,6 +29,10 @@
 
 #include <rte_common.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 struct rte_reciprocal {
        uint32_t m;
        uint8_t sh1, sh2;
@@ -89,4 +93,8 @@ rte_reciprocal_divide_u64(uint64_t a, const struct rte_reciprocal_u64 *R)
 struct rte_reciprocal rte_reciprocal_value(uint32_t d);
 struct rte_reciprocal_u64 rte_reciprocal_value_u64(uint64_t d);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* _RTE_RECIPROCAL_H_ */