[PATCH 6.6 070/102] smb311: additional compression flag defined in updated protocol spec

Greg Kroah-Hartman
2024-05-23T13:25:37Z

From: Steve French <stfrench@microsoft.com>

[ Upstream commit e56bc745fa1de77abc2ad8debc4b1b83e0426c49 ]

Added new compression flag that was recently documented, in
addition fix some typos and clarify the sid_attr_data struct
definition.

Reviewed-by: Bharath SM <bharathsm@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/smb/common/smb2pdu.h | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/fs/smb/common/smb2pdu.h b/fs/smb/common/smb2pdu.h
index 735614d233a06..202ff91281560 100644
--- a/fs/smb/common/smb2pdu.h
+++ b/fs/smb/common/smb2pdu.h
@@ -280,15 +280,16 @@ struct smb3_blob_data {
#define SE_GROUP_RESOURCE 0x20000000
#define SE_GROUP_LOGON_ID 0xC0000000

-/* struct sid_attr_data is SidData array in BlobData format then le32 Attr */
-
struct sid_array_data {
__le16 SidAttrCount;
/* SidAttrList - array of sid_attr_data structs */
} __packed;

-struct luid_attr_data {
-
+/* struct sid_attr_data is SidData array in BlobData format then le32 Attr */
+struct sid_attr_data {
+ __le16 BlobSize;
+ __u8 BlobData[];
+ /* __le32 Attr */
} __packed;

/*
@@ -502,6 +503,7 @@ struct smb2_encryption_neg_context {
#define SMB3_COMPRESS_LZ77_HUFF cpu_to_le16(0x0003)
/* Pattern scanning algorithm See MS-SMB2 3.1.4.4.1 */
#define SMB3_COMPRESS_PATTERN cpu_to_le16(0x0004) /* Pattern_V1 */
+#define SMB3_COMPRESS_LZ4 cpu_to_le16(0x0005)

/* Compression Flags */
#define SMB2_COMPRESSION_CAPABILITIES_FLAG_NONE cpu_to_le32(0x00000000)
--
2.43.0