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

Change the addr field in the cb_getattrargs 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>
diff --git a/fs/nfs/callback.h b/fs/nfs/callback.h
index c2bb14e..ec0ffd9 100644
--- a/fs/nfs/callback.h
+++ b/fs/nfs/callback.h
@@ -38,7 +38,7 @@
 };
 
 struct cb_getattrargs {
-	struct sockaddr_in *addr;
+	struct sockaddr *addr;
 	struct nfs_fh fh;
 	uint32_t bitmap[2];
 };
diff --git a/fs/nfs/callback_proc.c b/fs/nfs/callback_proc.c
index e89a900..32f0df0 100644
--- a/fs/nfs/callback_proc.c
+++ b/fs/nfs/callback_proc.c
@@ -25,7 +25,7 @@
 
 	res->bitmap[0] = res->bitmap[1] = 0;
 	res->status = 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;
 
diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c
index 97abd82..3eda1bc 100644
--- a/fs/nfs/callback_xdr.c
+++ b/fs/nfs/callback_xdr.c
@@ -176,7 +176,7 @@
 	status = decode_fh(xdr, &args->fh);
 	if (unlikely(status != 0))
 		goto out;
-	args->addr = svc_addr_in(rqstp);
+	args->addr = svc_addr(rqstp);
 	status = decode_bitmap(xdr, args->bitmap);
 out:
 	dprintk("%s: exit with status = %d\n", __FUNCTION__, ntohl(status));