diff options
| author |   Steve French <stfrench@microsoft.com> | 2020-10-14 20:24:09 -0500 |
|---|---|---|
| committer | Steve French <stfrench@microsoft.com> | 2020-10-15 23:58:15 -0500 |
| commit | 29e279230413cdd5e00fb5d269cae1099184ab85 (patch) | |
| tree | 8556337d076697bdbaba24dc949bdf2f33b3d179 /fs/cifs/smb2pdu.h | |
| parent | smb3.1.1: add new module load parm require_gcm_256 (diff) | |
| download | linux-dev-29e279230413cdd5e00fb5d269cae1099184ab85.tar.xz linux-dev-29e279230413cdd5e00fb5d269cae1099184ab85.zip | |
smb3.1.1: add new module load parm enable_gcm_256
Add new module load parameter enable_gcm_256. If set, then add
AES-256-GCM (strongest encryption type) to the list of encryption
types requested. Put it in the list as the second choice (since
AES-128-GCM is faster and much more broadly supported by
SMB3 servers). To make this stronger encryption type, GCM-256,
required (the first and only choice, you would use module parameter
"require_gcm_256."
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs/cifs/smb2pdu.h')
| -rw-r--r-- | fs/cifs/smb2pdu.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/cifs/smb2pdu.h b/fs/cifs/smb2pdu.h index 5932fc0dc62c..6f65f1cec8ad 100644 --- a/fs/cifs/smb2pdu.h +++ b/fs/cifs/smb2pdu.h @@ -361,8 +361,9 @@ struct smb2_encryption_neg_context { __le16 ContextType; /* 2 */ __le16 DataLength; __le32 Reserved; - __le16 CipherCount; /* AES-128-GCM and AES-128-CCM */ - __le16 Ciphers[2]; + /* CipherCount usally 2, but can be 3 when AES256-GCM enabled */ + __le16 CipherCount; /* AES128-GCM and AES128-CCM by default */ + __le16 Ciphers[3]; } __packed; /* See MS-SMB2 2.2.3.1.3 */ |