Set previous session id correctly on SMB3 reconnect

[firefly-linux-kernel-4.4.55.git] / fs / cifs / smb2pdu.c

diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index 749cc3e5b9330a9748b2ce35e3465ef5b04f46d4..ac0ec0fbbe7cd8ec00e4d750a55a0aa4344575c1 100644 (file)
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -607,6 +607,7 @@ 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");
 
@@ -644,6 +645,10 @@ 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);