[PATCH 5.10 080/306] SUNRPC query transports source port

[Greg Kroah-Hartman]

From: Olga Kornievskaia <kolga@xxxxxxxxxx>

[ Upstream commit a8482488a7d6d320f63a9ee1912dbb5ae5b80a61 ]

Provide ability to query transport's source port.

Signed-off-by: Olga Kornievskaia <kolga@xxxxxxxxxx>
Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 include/linux/sunrpc/xprtsock.h | 1 +
 net/sunrpc/xprtsock.c           | 7 +++++++
 2 files changed, 8 insertions(+)

diff --git a/include/linux/sunrpc/xprtsock.h b/include/linux/sunrpc/xprtsock.h
index 3c1423ee74b4..8c2a712cb242 100644
--- a/include/linux/sunrpc/xprtsock.h
+++ b/include/linux/sunrpc/xprtsock.h
@@ -10,6 +10,7 @@
 
 int		init_socket_xprt(void);
 void		cleanup_socket_xprt(void);
+unsigned short	get_srcport(struct rpc_xprt *);
 
 #define RPC_MIN_RESVPORT	(1U)
 #define RPC_MAX_RESVPORT	(65535U)
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index 9c0f71e82d97..7d7c08af54de 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -1639,6 +1639,13 @@ static int xs_get_srcport(struct sock_xprt *transport)
 	return port;
 }
 
+unsigned short get_srcport(struct rpc_xprt *xprt)
+{
+	struct sock_xprt *sock = container_of(xprt, struct sock_xprt, xprt);
+	return sock->srcport;
+}
+EXPORT_SYMBOL(get_srcport);
+
 static unsigned short xs_next_srcport(struct sock_xprt *transport, unsigned short port)
 {
 	if (transport->srcport != 0)
-- 
2.30.2