SUNRPC: parametrize rpc_parse_scope_id() by network context

Parametrize rpc_parse_scope_id() by network context and thus force it's caller
to pass in network context instead of using hard-coded "init_net".
Signed-off-by: NStanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>

net/sunrpc/addr.c

@@ -156,8 +156,9 @@ static size_t rpc_pton4(const char *buf, const size_t buflen,
 }
 
 #if IS_ENABLED(CONFIG_IPV6)
-static int rpc_parse_scope_id(const char *buf, const size_t buflen,
-			      const char *delim, struct sockaddr_in6 *sin6)
+static int rpc_parse_scope_id(struct net *net, const char *buf,
+			      const size_t buflen, const char *delim,
+			      struct sockaddr_in6 *sin6)
 {
 	char *p;
 	size_t len;
@@ -177,7 +178,7 @@ static int rpc_parse_scope_id(const char *buf, const size_t buflen,
 		unsigned long scope_id = 0;
 		struct net_device *dev;
 
-		dev = dev_get_by_name(&init_net, p);
+		dev = dev_get_by_name(net, p);
 		if (dev != NULL) {
 			scope_id = dev->ifindex;
 			dev_put(dev);
@@ -213,7 +214,7 @@ static size_t rpc_pton6(const char *buf, const size_t buflen,
 	if (in6_pton(buf, buflen, addr, IPV6_SCOPE_DELIMITER, &delim) == 0)
 		return 0;
 
-	if (!rpc_parse_scope_id(buf, buflen, delim, sin6))
+	if (!rpc_parse_scope_id(&init_net, buf, buflen, delim, sin6))
 		return 0;
 
 	sin6->sin6_family = AF_INET6;