blob: 5a45d5c708abc6b6706c8bbb791eb9b836d45100 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
|
From bde16a316d50fe5ca7478e5a284b317dffe537fc Mon Sep 17 00:00:00 2001
From: Sasha Levin <sashal@kernel.org>
Date: Wed, 28 May 2025 18:01:30 +0200
Subject: smb: smbdirect: add smbdirect_pdu.h with protocol definitions
From: Stefan Metzmacher <metze@samba.org>
[ Upstream commit 00fab6cf323fa5850e6cbe283b23e605e6e97912 ]
This is just a start moving into a common smbdirect layer.
It will be used in the next commits...
Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: Long Li <longli@microsoft.com>
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: Hyunchul Lee <hyc.lee@gmail.com>
Cc: Meetakshi Setiya <meetakshisetiyaoss@gmail.com>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Stable-dep-of: 43e7e284fc77 ("cifs: Fix the smbd_response slab to allow usercopy")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/smb/common/smbdirect/smbdirect_pdu.h | 55 +++++++++++++++++++++++++
1 file changed, 55 insertions(+)
create mode 100644 fs/smb/common/smbdirect/smbdirect_pdu.h
diff --git a/fs/smb/common/smbdirect/smbdirect_pdu.h b/fs/smb/common/smbdirect/smbdirect_pdu.h
new file mode 100644
index 0000000000000..ae9fdb05ce231
--- /dev/null
+++ b/fs/smb/common/smbdirect/smbdirect_pdu.h
@@ -0,0 +1,55 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2017 Stefan Metzmacher
+ */
+
+#ifndef __FS_SMB_COMMON_SMBDIRECT_SMBDIRECT_PDU_H__
+#define __FS_SMB_COMMON_SMBDIRECT_SMBDIRECT_PDU_H__
+
+#define SMBDIRECT_V1 0x0100
+
+/* SMBD negotiation request packet [MS-SMBD] 2.2.1 */
+struct smbdirect_negotiate_req {
+ __le16 min_version;
+ __le16 max_version;
+ __le16 reserved;
+ __le16 credits_requested;
+ __le32 preferred_send_size;
+ __le32 max_receive_size;
+ __le32 max_fragmented_size;
+} __packed;
+
+/* SMBD negotiation response packet [MS-SMBD] 2.2.2 */
+struct smbdirect_negotiate_resp {
+ __le16 min_version;
+ __le16 max_version;
+ __le16 negotiated_version;
+ __le16 reserved;
+ __le16 credits_requested;
+ __le16 credits_granted;
+ __le32 status;
+ __le32 max_readwrite_size;
+ __le32 preferred_send_size;
+ __le32 max_receive_size;
+ __le32 max_fragmented_size;
+} __packed;
+
+#define SMBDIRECT_DATA_MIN_HDR_SIZE 0x14
+#define SMBDIRECT_DATA_OFFSET 0x18
+
+#define SMBDIRECT_FLAG_RESPONSE_REQUESTED 0x0001
+
+/* SMBD data transfer packet with payload [MS-SMBD] 2.2.3 */
+struct smbdirect_data_transfer {
+ __le16 credits_requested;
+ __le16 credits_granted;
+ __le16 flags;
+ __le16 reserved;
+ __le32 remaining_data_length;
+ __le32 data_offset;
+ __le32 data_length;
+ __le32 padding;
+ __u8 buffer[];
+} __packed;
+
+#endif /* __FS_SMB_COMMON_SMBDIRECT_SMBDIRECT_PDU_H__ */
--
2.39.5
|
