From: Steve French <stfrench@microsoft.com>
Date: Thu, 15 Jul 2021 04:32:09 +0000 (-0500)
Subject: SMB3.1.1: fix mount failure to some servers when compression enabled
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=4511d7c8f440ab13520601141d67d13cb074620a;p=linux.git

SMB3.1.1: fix mount failure to some servers when compression enabled

When sending the compression context to some servers, they rejected
the SMB3.1.1 negotiate protocol because they expect the compression
context to have a data length of a multiple of 8.

Reviewed-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
---

diff --git a/fs/cifs/smb2pdu.h b/fs/cifs/smb2pdu.h
index 4b27cb9105fd5..e9cac7970b66b 100644
--- a/fs/cifs/smb2pdu.h
+++ b/fs/cifs/smb2pdu.h
@@ -394,6 +394,7 @@ struct smb2_compression_capabilities_context {
 	__u16	Padding;
 	__u32	Flags;
 	__le16	CompressionAlgorithms[3];
+	__u16	Pad;  /* Some servers require pad to DataLen multiple of 8 */
 	/* Check if pad needed */
 } __packed;