[for-6.11 PATCH 07/29] sunrpc: add and export rpc_ntop6_addr_noscopeid

[Mike Snitzer <snitzer@kernel.org>]

From: Peng Tao <tao.peng@primarydata.com>

Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Lance Shelton <lance.shelton@hammerspace.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
---
 include/linux/sunrpc/addr.h |  9 +++++++++
 net/sunrpc/addr.c           | 19 +++++++++++++------
 2 files changed, 22 insertions(+), 6 deletions(-)

diff --git a/include/linux/sunrpc/addr.h b/include/linux/sunrpc/addr.h
index 07d454873b6d..e1007bddc3c4 100644
--- a/include/linux/sunrpc/addr.h
+++ b/include/linux/sunrpc/addr.h
@@ -68,6 +68,9 @@ static inline bool __rpc_copy_addr4(struct sockaddr *dst,
 }
 
 #if IS_ENABLED(CONFIG_IPV6)
+extern size_t rpc_ntop6_addr_noscopeid(const struct in6_addr *addr,
+				       char *buf, const int buflen);
+
 static inline bool rpc_cmp_addr6(const struct sockaddr *sap1,
 				 const struct sockaddr *sap2)
 {
@@ -94,6 +97,12 @@ static inline bool __rpc_copy_addr6(struct sockaddr *dst,
 	return true;
 }
 #else	/* !(IS_ENABLED(CONFIG_IPV6) */
+static size_t rpc_ntop6_addr_noscopeid(const struct in6_addr *addr,
+				       char *buf, const int buflen)
+{
+	return 0;
+}
+
 static inline bool rpc_cmp_addr6(const struct sockaddr *sap1,
 				   const struct sockaddr *sap2)
 {
diff --git a/net/sunrpc/addr.c b/net/sunrpc/addr.c
index 97ff11973c49..78a123a7c39b 100644
--- a/net/sunrpc/addr.c
+++ b/net/sunrpc/addr.c
@@ -25,12 +25,9 @@
 
 #if IS_ENABLED(CONFIG_IPV6)
 
-static size_t rpc_ntop6_noscopeid(const struct sockaddr *sap,
-				  char *buf, const int buflen)
+size_t rpc_ntop6_addr_noscopeid(const struct in6_addr *addr,
+				char *buf, const int buflen)
 {
-	const struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sap;
-	const struct in6_addr *addr = &sin6->sin6_addr;
-
 	/*
 	 * RFC 4291, Section 2.2.2
 	 *
@@ -55,13 +52,23 @@ static size_t rpc_ntop6_noscopeid(const struct sockaddr *sap,
 	 */
 	if (ipv6_addr_v4mapped(addr))
 		return snprintf(buf, buflen, "::ffff:%pI4",
-					&addr->s6_addr32[3]);
+				&addr->s6_addr32[3]);
 
 	/*
 	 * RFC 4291, Section 2.2.1
 	 */
 	return snprintf(buf, buflen, "%pI6c", addr);
 }
+EXPORT_SYMBOL_GPL(rpc_ntop6_addr_noscopeid);
+
+static size_t rpc_ntop6_noscopeid(const struct sockaddr *sap,
+				  char *buf, const int buflen)
+{
+	const struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sap;
+	const struct in6_addr *addr = &sin6->sin6_addr;
+
+	return rpc_ntop6_addr_noscopeid(addr, buf, buflen);
+}
 
 static size_t rpc_ntop6(const struct sockaddr *sap,
 			char *buf, const size_t buflen)
-- 
2.44.0