MAC_TX_SRS_ENQUEUE_CHAIN
MAC_TX_SRS_ENQUEUE_CHAIN(srs, mp, tail, cnt, sz); \
MAC_TX_SRS_ENQUEUE_CHAIN(mac_srs,
MAC_TX_SRS_ENQUEUE_CHAIN(mac_srs,
MAC_TX_SRS_ENQUEUE_CHAIN(mac_srs,
MAC_TX_SRS_ENQUEUE_CHAIN(mac_srs, mp_chain, tail, cnt, sz);