CIFS: Add oplock break support for SMB2
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org>
Signed-off-by: Steve French <smfrench@gmail.com>
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index e97c256c..566d86b 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -1941,3 +1941,33 @@
current->tgid, FILE_BASIC_INFORMATION, 1,
(void **)&buf, &size);
}
+
+int
+SMB2_oplock_break(const unsigned int xid, struct cifs_tcon *tcon,
+ const u64 persistent_fid, const u64 volatile_fid,
+ __u8 oplock_level)
+{
+ int rc;
+ struct smb2_oplock_break *req = NULL;
+
+ cFYI(1, "SMB2_oplock_break");
+ rc = small_smb2_init(SMB2_OPLOCK_BREAK, tcon, (void **) &req);
+
+ if (rc)
+ return rc;
+
+ req->VolatileFid = volatile_fid;
+ req->PersistentFid = persistent_fid;
+ req->OplockLevel = oplock_level;
+ req->hdr.CreditRequest = cpu_to_le16(1);
+
+ rc = SendReceiveNoRsp(xid, tcon->ses, (char *) req, CIFS_OBREAK_OP);
+ /* SMB2 buffer freed by function above */
+
+ if (rc) {
+ cifs_stats_fail_inc(tcon, SMB2_OPLOCK_BREAK_HE);
+ cFYI(1, "Send error in Oplock Break = %d", rc);
+ }
+
+ return rc;
+}