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Set previous session id correctly on SMB3 reconnect 

Signed-off-by: Steve French <steve.french@primarydata.com>
CC: Stable <stable@vger.kernel.org>
Reported-by: David Goebel <davidgoe@microsoft.com>
hifive-unleashed-5.1
Steve French 2016-09-20 22:56:13 -05:00
parent 7d414f396c
commit c2afb8147e
2 changed files with 6 additions and 1 deletions
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5
fs/cifs/smb2pdu.c
View File

@ -604,6 +604,7 @@ SMB2_sess_setup(const unsigned int xid, struct cifs_ses *ses,
char *security_blob = NULL;
unsigned char *ntlmssp_blob = NULL;
bool use_spnego = false; /* else use raw ntlmssp */
u64 previous_session = ses->Suid;
cifs_dbg(FYI, "Session Setup\n");
@ -641,6 +642,10 @@ ssetup_ntlmssp_authenticate:
return rc;
req->hdr.SessionId = 0; /* First session, not a reauthenticate */
/* if reconnect, we need to send previous sess id, otherwise it is 0 */
req->PreviousSessionId = previous_session;
req->Flags = 0; /* MBZ */
/* to enable echos and oplocks */
req->hdr.CreditRequest = cpu_to_le16(3);

2
fs/cifs/smb2pdu.h
View File

@ -276,7 +276,7 @@ struct smb2_sess_setup_req {
__le32 Channel;
__le16 SecurityBufferOffset;
__le16 SecurityBufferLength;
__le64 PreviousSessionId;
__u64 PreviousSessionId;
__u8 Buffer[1]; /* variable length GSS security buffer */
} __packed;