[PATCH v3] hash: put GFNI stubs back

[Stephen Hemminger <stephen@networkplumber.org>]

Make the GFNI stub functions always built. This solves the conditional
linking problem. If GFNI is available, they will never get used.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---
 lib/hash/rte_thash_gfni.c |  9 +++------
 lib/hash/rte_thash_gfni.h | 30 +++++++++++++++++++++++-------
 lib/hash/version.map      |  9 +++++++--
 3 files changed, 33 insertions(+), 15 deletions(-)

diff --git a/lib/hash/rte_thash_gfni.c b/lib/hash/rte_thash_gfni.c
index f1525f9838de..5ead51dd3426 100644
--- a/lib/hash/rte_thash_gfni.c
+++ b/lib/hash/rte_thash_gfni.c
@@ -4,18 +4,17 @@
 
 #include <stdbool.h>
 
+#include <rte_compat.h>
 #include <rte_log.h>
 #include <rte_thash_gfni.h>
 
-#ifndef RTE_THASH_GFNI_DEFINED
-
 RTE_LOG_REGISTER_SUFFIX(hash_gfni_logtype, gfni, INFO);
 #define RTE_LOGTYPE_HASH hash_gfni_logtype
 #define HASH_LOG(level, ...) \
 	RTE_LOG_LINE(level, HASH, "" __VA_ARGS__)
 
 uint32_t
-rte_thash_gfni(const uint64_t *mtrx __rte_unused,
+___rte_thash_gfni(const uint64_t *mtrx __rte_unused,
 	const uint8_t *key __rte_unused, int len __rte_unused)
 {
 	static bool warned;
@@ -30,7 +29,7 @@ rte_thash_gfni(const uint64_t *mtrx __rte_unused,
 }
 
 void
-rte_thash_gfni_bulk(const uint64_t *mtrx __rte_unused,
+___rte_thash_gfni_bulk(const uint64_t *mtrx __rte_unused,
 	int len __rte_unused, uint8_t *tuple[] __rte_unused,
 	uint32_t val[], uint32_t num)
 {
@@ -47,5 +46,3 @@ rte_thash_gfni_bulk(const uint64_t *mtrx __rte_unused,
 	for (i = 0; i < num; i++)
 		val[i] = 0;
 }
-
-#endif
diff --git a/lib/hash/rte_thash_gfni.h b/lib/hash/rte_thash_gfni.h
index eed55fc86c86..ebc531817b87 100644
--- a/lib/hash/rte_thash_gfni.h
+++ b/lib/hash/rte_thash_gfni.h
@@ -17,11 +17,22 @@ extern "C" {
 
 #endif
 
-#ifndef RTE_THASH_GFNI_DEFINED
+/*
+ * @internal
+ * Stubs defined for only used when GFNI is not available
+ */
+__rte_internal
+uint32_t
+___rte_thash_gfni(const uint64_t *mtrx, const uint8_t *key, int len);
+
+__rte_internal
+void
+___rte_thash_gfni_bulk(const uint64_t *mtrx, int len, uint8_t *tuple[],
+		       uint32_t val[], uint32_t num);
 
+#ifndef RTE_THASH_GFNI_DEFINED
 /**
  * Calculate Toeplitz hash.
- * Dummy implementation.
  *
  * @param m
  *  Pointer to the matrices generated from the corresponding
@@ -33,12 +44,14 @@ extern "C" {
  * @return
  *  Calculated Toeplitz hash value.
  */
-uint32_t
-rte_thash_gfni(const uint64_t *mtrx, const uint8_t *key, int len);
+static inline uint32_t
+rte_thash_gfni(const uint64_t *mtrx, const uint8_t *key, int len)
+{
+	return ___rte_thash_gfni(mtrx, key, len);
+}
 
 /**
  * Bulk implementation for Toeplitz hash.
- * Dummy implementation.
  *
  * @param m
  *  Pointer to the matrices generated from the corresponding
@@ -53,9 +66,12 @@ rte_thash_gfni(const uint64_t *mtrx, const uint8_t *key, int len);
  * @param num
  *  Number of tuples to hash.
  */
-void
+static inline void
 rte_thash_gfni_bulk(const uint64_t *mtrx, int len, uint8_t *tuple[],
-	uint32_t val[], uint32_t num);
+	uint32_t val[], uint32_t num)
+{
+	return ___rte_thash_gfni_bulk(mtrx, len, tuple, val);
+}
 
 #endif /* RTE_THASH_GFNI_DEFINED */
 
diff --git a/lib/hash/version.map b/lib/hash/version.map
index 6b2afebf6b46..942e2998578f 100644
--- a/lib/hash/version.map
+++ b/lib/hash/version.map
@@ -41,10 +41,15 @@ DPDK_24 {
 	rte_thash_get_gfni_matrices;
 	rte_thash_get_helper;
 	rte_thash_get_key;
-	rte_thash_gfni;
-	rte_thash_gfni_bulk;
 	rte_thash_gfni_supported;
 	rte_thash_init_ctx;
 
 	local: *;
 };
+
+INTERNAL {
+	global:
+
+	___rte_thash_gfni;
+	___rte_thash_gfni_bulk;
+};
-- 
2.43.0