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| author | Namjae Jeon <namjae.jeon@samsung.com> | 2021-07-21 04:05:53 +0300 |
|---|---|---|
| committer | Namjae Jeon <namjae.jeon@samsung.com> | 2021-07-22 03:56:02 +0300 |
| commit | 378087cd17eea71c4e78e6053597e38429ccee0f (patch) | |
| tree | 625ffdc9f578e61f7531eec39926b82f97e724cd /fs/ksmbd/smb2pdu.h | |
| parent | af320a739029f6f8c5c05e769fadaf88e9b7d34f (diff) | |
| download | linux-378087cd17eea71c4e78e6053597e38429ccee0f.tar.xz | |
ksmbd: add support for negotiating signing algorithm
Support for faster packet signing (using GMAC instead of CMAC) can
now be negotiated to some newer servers, including Windows.
See MS-SMB2 section 2.2.3.17.
This patch adds support for sending the new negotiate context with two
supported signing algorithms(AES-CMAC, HMAC-SHA256).
If client add support for AES_GMAC, Server will be supported later
depend on it.
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs/ksmbd/smb2pdu.h')
| -rw-r--r-- | fs/ksmbd/smb2pdu.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/fs/ksmbd/smb2pdu.h b/fs/ksmbd/smb2pdu.h index 21cb93e771f7..89019f67234c 100644 --- a/fs/ksmbd/smb2pdu.h +++ b/fs/ksmbd/smb2pdu.h @@ -268,6 +268,7 @@ struct preauth_integrity_info { #define SMB2_ENCRYPTION_CAPABILITIES cpu_to_le16(2) #define SMB2_COMPRESSION_CAPABILITIES cpu_to_le16(3) #define SMB2_NETNAME_NEGOTIATE_CONTEXT_ID cpu_to_le16(5) +#define SMB2_SIGNING_CAPABILITIES cpu_to_le16(8) #define SMB2_POSIX_EXTENSIONS_AVAILABLE cpu_to_le16(0x100) struct smb2_neg_context { @@ -332,6 +333,19 @@ struct smb2_netname_neg_context { __le16 NetName[]; /* hostname of target converted to UCS-2 */ } __packed; +/* Signing algorithms */ +#define SIGNING_ALG_HMAC_SHA256 cpu_to_le16(0) +#define SIGNING_ALG_AES_CMAC cpu_to_le16(1) +#define SIGNING_ALG_AES_GMAC cpu_to_le16(2) + +struct smb2_signing_capabilities { + __le16 ContextType; /* 8 */ + __le16 DataLength; + __le32 Reserved; + __le16 SigningAlgorithmCount; + __le16 SigningAlgorithms[]; +} __packed; + struct smb2_negotiate_rsp { struct smb2_hdr hdr; __le16 StructureSize; /* Must be 65 */ |