From c3ed44026cd07fda5976ecb79225759901a160b4 Mon Sep 17 00:00:00 2001
From: Steve French <stfrench@microsoft.com>
Date: Thu, 28 Jun 2018 22:53:39 -0500
Subject: [PATCH] smb3: remove noisy warning message on mount
Git-commit: c3ed44026cd07fda5976ecb79225759901a160b4
Patch-mainline: v4.19-rc1
References: bsc#1129664

Some servers, like Samba, don't support the fsctl for
query_network_interface_info so don't log a noisy warning
message on mount for this by default unless the error is more serious.
Lower the error to an FYI level so it does not get logged by
default.

Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Acked-by: Paulo Alcantara <palcantara@suse.de>
---
 fs/cifs/smb2ops.c |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -286,9 +286,12 @@ SMB3_request_interfaces(const unsigned i
 			FSCTL_QUERY_NETWORK_INTERFACE_INFO, true /* is_fsctl */,
 			NULL /* no data input */, 0 /* no data input */,
 			(char **)&out_buf, &ret_data_len);
-	if (rc != 0)
+	if (rc == -EOPNOTSUPP) {
+		cifs_dbg(FYI,
+			 "server does not support query network interfaces\n");
+	} else if (rc != 0) {
 		cifs_dbg(VFS, "error %d on ioctl to get interface list\n", rc);
-	else if (ret_data_len < sizeof(struct network_interface_info_ioctl_rsp)) {
+	} else if (ret_data_len < sizeof(struct network_interface_info_ioctl_rsp)) {
 		cifs_dbg(VFS, "server returned bad net interface info buf\n");
 		rc = -EINVAL;
 	} else {