SMB2_NEGOTIATE_SIGNING_REQUIRED
security_mode = SMB2_NEGOTIATE_SIGNING_REQUIRED;
if ((sp->sv2_security_mode & SMB2_NEGOTIATE_SIGNING_REQUIRED) ||
security_mode = SMB2_NEGOTIATE_SIGNING_REQUIRED;
secmode |= SMB2_NEGOTIATE_SIGNING_REQUIRED;
if ((s->srv_secmode & SMB2_NEGOTIATE_SIGNING_REQUIRED) != 0 ||
(s->cli_secmode & SMB2_NEGOTIATE_SIGNING_REQUIRED) != 0)