NFS: Change cb_recallargs to pass "struct sockaddr *" instead of sockaddr_in

Change the addr field in the cb_recallargs struct to a "struct sockaddr *"
to support non-IPv4 addresses.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Cc: Aurelien Charbon <aurelien.charbon@ext.bull.net>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

fs/nfs/callback.h

@@ -53,7 +53,7 @@ struct cb_getattrres {
 };
 
 struct cb_recallargs {
-	struct sockaddr_in *addr;
+	struct sockaddr *addr;
 	struct nfs_fh fh;
 	nfs4_stateid stateid;
 	uint32_t truncate;

fs/nfs/callback_proc.c

@@ -68,7 +68,7 @@ __be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy)
 	__be32 res;
 	
 	res = htonl(NFS4ERR_BADHANDLE);
-	clp = nfs_find_client(args->addr, 4);
+	clp = nfs_find_client((struct sockaddr_in *)args->addr, 4);
 	if (clp == NULL)
 		goto out;
 

fs/nfs/callback_xdr.c

@@ -188,7 +188,7 @@ static __be32 decode_recall_args(struct svc_rqst *rqstp, struct xdr_stream *xdr,
 	__be32 *p;
 	__be32 status;
 
-	args->addr = svc_addr_in(rqstp);
+	args->addr = svc_addr(rqstp);
 	status = decode_stateid(xdr, &args->stateid);
 	if (unlikely(status != 0))
 		goto out;