nfsd4: implement backchannel_ctl operation

This operation is mandatory for servers to implement.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index 6c9a4b291dba..f955176f1b6f 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -1666,6 +1666,12 @@ static struct nfsd4_operation nfsd4_ops[] = {
                 .op_name = "OP_EXCHANGE_ID",
                 .op_rsize_bop = (nfsd4op_rsize)nfsd4_exchange_id_rsize,
         },
+        [OP_BACKCHANNEL_CTL] = {
+                .op_func = (nfsd4op_func)nfsd4_backchannel_ctl,
+                .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING,
+                .op_name = "OP_BACKCHANNEL_CTL",
+                .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
+        },
         [OP_BIND_CONN_TO_SESSION] = {
                 .op_func = (nfsd4op_func)nfsd4_bind_conn_to_session,
                 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP