i_ldc_send_pkt
rv = i_ldc_send_pkt(ldcp, LDC_CTRL, LDC_NACK, LDC_RTS);
rv = i_ldc_send_pkt(ldcp, LDC_CTRL, LDC_NACK, LDC_RTR);
rv = i_ldc_send_pkt(ldcp, LDC_CTRL, LDC_INFO, LDC_RDX);
rv = i_ldc_send_pkt(ldcp, msg->type, LDC_NACK,
ack_rv = i_ldc_send_pkt(ldcp, LDC_DATA, LDC_ACK, 0);
rv = i_ldc_send_pkt(ldcp, msg->type, LDC_NACK,
static int i_ldc_send_pkt(ldc_chan_t *ldcp, uint8_t pkttype, uint8_t subtype,