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smb3: move defines for ioctl protocol header and SMB2 sizes to smbfs_common 

The definitions for the ioctl SMB3 request and response as well
as length of various fields defined in the protocol documentation
were duplicated in fs/ksmbd and fs/cifs.  Move these to the common
code in fs/smbfs_common/smb2pdu.h

Reviewed-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Steve French 2022-03-26 12:47:57 -05:00
parent 113be37d87
commit 15e7b6d753
7 changed files with 88 additions and 143 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
fs/cifs/cifsglob.h
View File

@ -852,13 +852,7 @@ compare_mid(__u16 mid, const struct smb_hdr *smb)
#define CIFS_MAX_RFC1002_WSIZE ((1<<17) - 1 - sizeof(WRITE_REQ) + 4)
#define CIFS_MAX_RFC1002_RSIZE ((1<<17) - 1 - sizeof(READ_RSP) + 4)
/*
* The default wsize is 1M. find_get_pages seems to return a maximum of 256
* pages in a single call. With PAGE_SIZE == 4k, this means we can fill
* a single wsize request with a single call.
*/
#define CIFS_DEFAULT_IOSIZE (1024 * 1024)
#define SMB3_DEFAULT_IOSIZE (4 * 1024 * 1024)
/*
* Windows only supports a max of 60kb reads and 65535 byte writes. Default to

12
fs/cifs/cifspdu.h
View File

@ -123,18 +123,6 @@
*/
#define CIFS_SESS_KEY_SIZE (16)
/*
* Size of the smb3 signing key
*/
#define SMB3_SIGN_KEY_SIZE (16)
/*
* Size of the smb3 encryption/decryption key storage.
* This size is big enough to store any cipher key types.
*/
#define SMB3_ENC_DEC_KEY_SIZE (32)
#define CIFS_CLIENT_CHALLENGE_SIZE (8)
#define CIFS_SERVER_CHALLENGE_SIZE (8)
#define CIFS_HMAC_MD5_HASH_SIZE (16)
#define CIFS_CPHTXT_SIZE (16)

11
fs/cifs/smb2glob.h
View File

@ -41,15 +41,4 @@
#define END_OF_CHAIN 4
#define RELATED_REQUEST 8
#define SMB2_SIGNATURE_SIZE (16)
#define SMB2_NTLMV2_SESSKEY_SIZE (16)
#define SMB2_HMACSHA256_SIZE (32)
#define SMB2_CMACAES_SIZE (16)
#define SMB3_SIGNKEY_SIZE (16)
#define SMB3_GCM128_CRYPTKEY_SIZE (16)
#define SMB3_GCM256_CRYPTKEY_SIZE (32)
/* Maximum buffer size value we can send with 1 credit */
#define SMB2_MAX_BUFFER_SIZE 65536
#endif /* _SMB2_GLOB_H */

41
fs/cifs/smb2pdu.h
View File

@ -141,13 +141,6 @@ struct create_durable {
} Data;
} __packed;
struct create_posix {
struct create_context ccontext;
__u8 Name[16];
__le32 Mode;
__u32 Reserved;
} __packed;
/* See MS-SMB2 2.2.13.2.11 */
/* Flags */
#define SMB2_DHANDLE_FLAG_PERSISTENT 0x00000002
@ -428,40 +421,6 @@ struct duplicate_extents_to_file {
*/
#define SMB2_IOCTL_IOV_SIZE 2
struct smb2_ioctl_req {
struct smb2_hdr hdr;
__le16 StructureSize; /* Must be 57 */
__u16 Reserved;
__le32 CtlCode;
__u64 PersistentFileId; /* opaque endianness */
__u64 VolatileFileId; /* opaque endianness */
__le32 InputOffset;
__le32 InputCount;
__le32 MaxInputResponse;
__le32 OutputOffset;
__le32 OutputCount;
__le32 MaxOutputResponse;
__le32 Flags;
__u32 Reserved2;
__u8 Buffer[];
} __packed;
struct smb2_ioctl_rsp {
struct smb2_hdr hdr;
__le16 StructureSize; /* Must be 57 */
__u16 Reserved;
__le32 CtlCode;
__u64 PersistentFileId; /* opaque endianness */
__u64 VolatileFileId; /* opaque endianness */
__le32 InputOffset;
__le32 InputCount;
__le32 OutputOffset;
__le32 OutputCount;
__le32 Flags;
__u32 Reserved2;
/* char * buffer[] */
} __packed;
#define SMB2_LOCKFLAG_SHARED_LOCK 0x0001
#define SMB2_LOCKFLAG_EXCLUSIVE_LOCK 0x0002
#define SMB2_LOCKFLAG_UNLOCK 0x0004

6
fs/ksmbd/smb2pdu.c
View File

@ -7581,7 +7581,7 @@ int smb2_ioctl(struct ksmbd_work *work)
goto out;
}
cnt_code = le32_to_cpu(req->CntCode);
cnt_code = le32_to_cpu(req->CtlCode);
ret = smb2_calc_max_out_buf_len(work, 48,
le32_to_cpu(req->MaxOutputResponse));
if (ret < 0) {
@ -7687,7 +7687,7 @@ int smb2_ioctl(struct ksmbd_work *work)
rsp->PersistentFileId = req->PersistentFileId;
fsctl_copychunk(work,
(struct copychunk_ioctl_req *)&req->Buffer[0],
le32_to_cpu(req->CntCode),
le32_to_cpu(req->CtlCode),
le32_to_cpu(req->InputCount),
req->VolatileFileId,
req->PersistentFileId,
@ -7841,7 +7841,7 @@ int smb2_ioctl(struct ksmbd_work *work)
goto out;
}
rsp->CntCode = cpu_to_le32(cnt_code);
rsp->CtlCode = cpu_to_le32(cnt_code);
rsp->InputCount = cpu_to_le32(0);
rsp->InputOffset = cpu_to_le32(112);
rsp->OutputOffset = cpu_to_le32(112);

70
fs/ksmbd/smb2pdu.h
View File

@ -16,42 +16,13 @@
#define FILE_CREATED 0x00000002
#define FILE_OVERWRITTEN 0x00000003
/*
* Size of the session key (crypto key encrypted with the password
*/
#define SMB2_NTLMV2_SESSKEY_SIZE 16
#define SMB2_SIGNATURE_SIZE 16
#define SMB2_HMACSHA256_SIZE 32
#define SMB2_CMACAES_SIZE 16
#define SMB3_GCM128_CRYPTKEY_SIZE 16
#define SMB3_GCM256_CRYPTKEY_SIZE 32
/*
* Size of the smb3 encryption/decryption keys
*/
#define SMB3_ENC_DEC_KEY_SIZE 32
/*
* Size of the smb3 signing key
*/
#define SMB3_SIGN_KEY_SIZE 16
#define CIFS_CLIENT_CHALLENGE_SIZE 8
#define SMB_SERVER_CHALLENGE_SIZE 8
/* SMB2 Max Credits */
#define SMB2_MAX_CREDITS 8192
/* Maximum buffer size value we can send with 1 credit */
#define SMB2_MAX_BUFFER_SIZE 65536
#define NUMBER_OF_SMB2_COMMANDS 0x0013
/* BB FIXME - analyze following length BB */
#define MAX_SMB2_HDR_SIZE 0x78 /* 4 len + 64 hdr + (2*24 wct) + 2 bct + 2 pad */
#define SMB21_DEFAULT_IOSIZE (1024 * 1024)
#define SMB3_DEFAULT_IOSIZE (4 * 1024 * 1024)
#define SMB3_DEFAULT_TRANS_SIZE (1024 * 1024)
#define SMB3_MIN_IOSIZE (64 * 1024)
#define SMB3_MAX_IOSIZE (8 * 1024 * 1024)
@ -149,13 +120,6 @@ struct create_alloc_size_req {
__le64 AllocationSize;
} __packed;
struct create_posix {
struct create_context ccontext;
__u8 Name[16];
__le32 Mode;
__u32 Reserved;
} __packed;
struct create_durable_rsp {
struct create_context ccontext;
__u8 Name[8];
@ -213,40 +177,6 @@ struct duplicate_extents_to_file {
__le64 ByteCount; /* Bytes to be copied */
} __packed;
struct smb2_ioctl_req {
struct smb2_hdr hdr;
__le16 StructureSize; /* Must be 57 */
__le16 Reserved; /* offset from start of SMB2 header to write data */
__le32 CntCode;
__u64 PersistentFileId;
__u64 VolatileFileId;
__le32 InputOffset; /* Reserved MBZ */
__le32 InputCount;
__le32 MaxInputResponse;
__le32 OutputOffset;
__le32 OutputCount;
__le32 MaxOutputResponse;
__le32 Flags;
__le32 Reserved2;
__u8 Buffer[1];
} __packed;
struct smb2_ioctl_rsp {
struct smb2_hdr hdr;
__le16 StructureSize; /* Must be 49 */
__le16 Reserved; /* offset from start of SMB2 header to write data */
__le32 CntCode;
__u64 PersistentFileId;
__u64 VolatileFileId;
__le32 InputOffset; /* Reserved MBZ */
__le32 InputCount;
__le32 OutputOffset;
__le32 OutputCount;
__le32 Flags;
__le32 Reserved2;
__u8 Buffer[1];
} __packed;
struct validate_negotiate_info_req {
__le32 Capabilities;
__u8 Guid[SMB2_CLIENT_GUID_SIZE];

85
fs/smbfs_common/smb2pdu.h
View File

@ -60,6 +60,40 @@
#define NUMBER_OF_SMB2_COMMANDS 0x0013
/*
* Size of the session key (crypto key encrypted with the password
*/
#define SMB2_NTLMV2_SESSKEY_SIZE 16
#define SMB2_SIGNATURE_SIZE 16
#define SMB2_HMACSHA256_SIZE 32
#define SMB2_CMACAES_SIZE 16
#define SMB3_GCM128_CRYPTKEY_SIZE 16
#define SMB3_GCM256_CRYPTKEY_SIZE 32
/*
* Size of the smb3 encryption/decryption keys
* This size is big enough to store any cipher key types.
*/
#define SMB3_ENC_DEC_KEY_SIZE 32
/*
* Size of the smb3 signing key
*/
#define SMB3_SIGN_KEY_SIZE 16
#define CIFS_CLIENT_CHALLENGE_SIZE 8
/* Maximum buffer size value we can send with 1 credit */
#define SMB2_MAX_BUFFER_SIZE 65536
/*
* The default wsize is 1M for SMB2 (and for some CIFS cases).
* find_get_pages seems to return a maximum of 256
* pages in a single call. With PAGE_SIZE == 4k, this means we can
* fill a single wsize request with a single call.
*/
#define SMB3_DEFAULT_IOSIZE (4 * 1024 * 1024)
/*
* SMB2 Header Definition
*
@ -88,6 +122,15 @@
#define SMB2_FLAGS_DFS_OPERATIONS cpu_to_le32(0x10000000)
#define SMB2_FLAGS_REPLAY_OPERATION cpu_to_le32(0x20000000) /* SMB3 & up */
/*
* Definitions for SMB2 Protocol Data Units (network frames)
*
* See MS-SMB2.PDF specification for protocol details.
* The Naming convention is the lower case version of the SMB2
* command code name for the struct. Note that structures must be packed.
*
*/
/* See MS-SMB2 section 2.2.1 */
struct smb2_hdr {
__le32 ProtocolId; /* 0xFE 'S' 'M' 'B' */
@ -997,6 +1040,13 @@ struct smb2_create_rsp {
__u8 Buffer[1];
} __packed;
struct create_posix {
struct create_context ccontext;
__u8 Name[16];
__le32 Mode;
__u32 Reserved;
} __packed;
#define SMB2_LEASE_NONE_LE cpu_to_le32(0x00)
#define SMB2_LEASE_READ_CACHING_LE cpu_to_le32(0x01)
#define SMB2_LEASE_HANDLE_CACHING_LE cpu_to_le32(0x02)
@ -1036,6 +1086,41 @@ struct create_lease_v2 {
__u8 Pad[4];
} __packed;
/* See MS-SMB2 2.2.31 and 2.2.32 */
struct smb2_ioctl_req {
struct smb2_hdr hdr;
__le16 StructureSize; /* Must be 57 */
__le16 Reserved; /* offset from start of SMB2 header to write data */
__le32 CtlCode;
__u64 PersistentFileId;
__u64 VolatileFileId;
__le32 InputOffset; /* Reserved MBZ */
__le32 InputCount;
__le32 MaxInputResponse;
__le32 OutputOffset;
__le32 OutputCount;
__le32 MaxOutputResponse;
__le32 Flags;
__le32 Reserved2;
__u8 Buffer[];
} __packed;
struct smb2_ioctl_rsp {
struct smb2_hdr hdr;
__le16 StructureSize; /* Must be 49 */
__le16 Reserved;
__le32 CtlCode;
__u64 PersistentFileId;
__u64 VolatileFileId;
__le32 InputOffset; /* Reserved MBZ */
__le32 InputCount;
__le32 OutputOffset;
__le32 OutputCount;
__le32 Flags;
__le32 Reserved2;
__u8 Buffer[];
} __packed;
/* Possible InfoType values */
#define SMB2_O_INFO_FILE 0x01
#define SMB2_O_INFO_FILESYSTEM 0x02