IPMI_BTMSG_DATASND
IPMI_BTMSG_DATASND,
buf[IPMI_BTMSG_LEN] = c->c_txlen + (IPMI_BTMSG_DATASND - 1);
memcpy(buf + IPMI_BTMSG_DATASND, c->c_data, c->c_txlen);