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Message-ID: <20251113133252.145867-2-chenxiaosong.chenxiaosong@linux.dev>
Date: Thu, 13 Nov 2025 21:32:51 +0800
From: chenxiaosong.chenxiaosong@...ux.dev
To: sfrench@...ba.org,
smfrench@...il.com,
linkinjeon@...nel.org,
linkinjeon@...ba.org,
christophe.jaillet@...adoo.fr
Cc: linux-cifs@...r.kernel.org,
linux-kernel@...r.kernel.org,
chenxiaosong@...nxiaosong.com,
ChenXiaoSong <chenxiaosong@...inos.cn>
Subject: [PATCH v7 1/2] smb: move CREATE_DURABLE_RECONN to common/smb2pdu.h
From: ChenXiaoSong <chenxiaosong@...inos.cn>
The fields in struct create_durable_reconn_req and struct create_durable
are exactly the same, so remove create_durable_reconn_req from server,
and use typedef to define both CREATE_DURABLE_REQ and CREATE_DURABLE_RECONN
for a single struct.
Rename the following places:
- struct create_durable -> CREATE_DURABLE_REQ
- struct create_durable_reconn_req -> CREATE_DURABLE_RECONN
The documentation references are:
- SMB2_CREATE_DURABLE_HANDLE_REQUEST in MS-SMB2 2.2.13.2.3
- SMB2_CREATE_DURABLE_HANDLE_RECONNECT in MS-SMB2 2.2.13.2.4
- SMB2_FILEID in MS-SMB2 2.2.14.1
Descriptions of the struct fields:
- __u8 Reserved[16]: DurableRequest field of SMB2_CREATE_DURABLE_HANDLE_REQUEST.
A 16-byte field that MUST be reserved.
- __u64 PersistentFileId: Persistent field of 2.2.14.1 SMB2_FILEID
- __u64 VolatileFileId: Volatile field of 2.2.14.1 SMB2_FILEID
- struct Fid: Data field of SMB2_CREATE_DURABLE_HANDLE_RECONNECT.
An SMB2_FILEID structure, as specified in section 2.2.14.1.
Suggested-by: Namjae Jeon <linkinjeon@...nel.org>
Signed-off-by: ChenXiaoSong <chenxiaosong@...inos.cn>
---
fs/smb/client/smb2pdu.c | 23 +++++++++++------------
fs/smb/common/smb2pdu.h | 4 ++--
fs/smb/server/smb2pdu.c | 6 +++---
fs/smb/server/smb2pdu.h | 12 ------------
4 files changed, 16 insertions(+), 29 deletions(-)
diff --git a/fs/smb/client/smb2pdu.c b/fs/smb/client/smb2pdu.c
index 62ced22fc5a6..30c391424022 100644
--- a/fs/smb/client/smb2pdu.c
+++ b/fs/smb/client/smb2pdu.c
@@ -2229,21 +2229,20 @@ SMB2_tdis(const unsigned int xid, struct cifs_tcon *tcon)
return rc;
}
-
-static struct create_durable *
+static CREATE_DURABLE_REQ *
create_durable_buf(void)
{
- struct create_durable *buf;
+ CREATE_DURABLE_REQ *buf;
- buf = kzalloc(sizeof(struct create_durable), GFP_KERNEL);
+ buf = kzalloc(sizeof(CREATE_DURABLE_REQ), GFP_KERNEL);
if (!buf)
return NULL;
buf->ccontext.DataOffset = cpu_to_le16(offsetof
- (struct create_durable, Data));
+ (CREATE_DURABLE_REQ, Data));
buf->ccontext.DataLength = cpu_to_le32(16);
buf->ccontext.NameOffset = cpu_to_le16(offsetof
- (struct create_durable, Name));
+ (CREATE_DURABLE_REQ, Name));
buf->ccontext.NameLength = cpu_to_le16(4);
/* SMB2_CREATE_DURABLE_HANDLE_REQUEST is "DHnQ" */
buf->Name[0] = 'D';
@@ -2253,20 +2252,20 @@ create_durable_buf(void)
return buf;
}
-static struct create_durable *
+static CREATE_DURABLE_REQ *
create_reconnect_durable_buf(struct cifs_fid *fid)
{
- struct create_durable *buf;
+ CREATE_DURABLE_REQ *buf;
- buf = kzalloc(sizeof(struct create_durable), GFP_KERNEL);
+ buf = kzalloc(sizeof(CREATE_DURABLE_REQ), GFP_KERNEL);
if (!buf)
return NULL;
buf->ccontext.DataOffset = cpu_to_le16(offsetof
- (struct create_durable, Data));
+ (CREATE_DURABLE_REQ, Data));
buf->ccontext.DataLength = cpu_to_le32(16);
buf->ccontext.NameOffset = cpu_to_le16(offsetof
- (struct create_durable, Name));
+ (CREATE_DURABLE_REQ, Name));
buf->ccontext.NameLength = cpu_to_le16(4);
buf->Data.Fid.PersistentFileId = fid->persistent_fid;
buf->Data.Fid.VolatileFileId = fid->volatile_fid;
@@ -2552,7 +2551,7 @@ add_durable_context(struct kvec *iov, unsigned int *num_iovec,
iov[num].iov_base = create_durable_buf();
if (iov[num].iov_base == NULL)
return -ENOMEM;
- iov[num].iov_len = sizeof(struct create_durable);
+ iov[num].iov_len = sizeof(CREATE_DURABLE_REQ);
*num_iovec = num + 1;
return 0;
}
diff --git a/fs/smb/common/smb2pdu.h b/fs/smb/common/smb2pdu.h
index 824d27297bec..d0777fbfd503 100644
--- a/fs/smb/common/smb2pdu.h
+++ b/fs/smb/common/smb2pdu.h
@@ -1265,7 +1265,7 @@ struct create_posix {
} __packed;
/* See MS-SMB2 2.2.13.2.3 and MS-SMB2 2.2.13.2.4 */
-struct create_durable {
+typedef struct {
struct create_context_hdr ccontext;
__u8 Name[8];
union {
@@ -1275,7 +1275,7 @@ struct create_durable {
__u64 VolatileFileId;
} Fid;
} Data;
-} __packed;
+} __packed CREATE_DURABLE_REQ, CREATE_DURABLE_RECONN;
/* See MS-SMB2 2.2.13.2.5 */
struct create_mxac_req {
diff --git a/fs/smb/server/smb2pdu.c b/fs/smb/server/smb2pdu.c
index 95186fa96080..e7edb52e6e40 100644
--- a/fs/smb/server/smb2pdu.c
+++ b/fs/smb/server/smb2pdu.c
@@ -2766,7 +2766,7 @@ static int parse_durable_handle_context(struct ksmbd_work *work,
}
case DURABLE_RECONN:
{
- struct create_durable_reconn_req *recon;
+ CREATE_DURABLE_RECONN *recon;
if (dh_info->type == DURABLE_RECONN_V2 ||
dh_info->type == DURABLE_REQ_V2) {
@@ -2776,12 +2776,12 @@ static int parse_durable_handle_context(struct ksmbd_work *work,
if (le16_to_cpu(context->DataOffset) +
le32_to_cpu(context->DataLength) <
- sizeof(struct create_durable_reconn_req)) {
+ sizeof(CREATE_DURABLE_RECONN)) {
err = -EINVAL;
goto out;
}
- recon = (struct create_durable_reconn_req *)context;
+ recon = (CREATE_DURABLE_RECONN *)context;
persistent_id = recon->Data.Fid.PersistentFileId;
dh_info->fp = ksmbd_lookup_durable_fd(persistent_id);
if (!dh_info->fp) {
diff --git a/fs/smb/server/smb2pdu.h b/fs/smb/server/smb2pdu.h
index b94de41049f4..66cdc8e4a648 100644
--- a/fs/smb/server/smb2pdu.h
+++ b/fs/smb/server/smb2pdu.h
@@ -68,18 +68,6 @@ struct preauth_integrity_info {
#define DURABLE_HANDLE_MAX_TIMEOUT 300000
-struct create_durable_reconn_req {
- struct create_context_hdr ccontext;
- __u8 Name[8];
- union {
- __u8 Reserved[16];
- struct {
- __u64 PersistentFileId;
- __u64 VolatileFileId;
- } Fid;
- } Data;
-} __packed;
-
struct create_alloc_size_req {
struct create_context_hdr ccontext;
__u8 Name[8];
--
2.43.0
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