mac_drop_chain
mac_drop_chain(mac_srs->srs_first, "SRS free");
mac_drop_chain(mp_chain, "SRS Tx max queue"); \
mac_drop_chain((chain), (s)); \
mac_drop_chain(mac_srs->srs_first,
mac_drop_chain(mp_chain, "Rx no bandwidth");
mac_drop_chain(mp_chain, "Tx softring no desc");
mac_drop_chain(mp_chain,
mac_drop_chain(softring->s_ring_first, "softring free");
mac_drop_chain(mp_chain, "no peer");
mac_drop_chain(mp_chain, "simnet peer dev not ready");
mac_drop_chain(mp_chain, "simnet dev not ready");
mac_drop_chain(mpnext, "failed to get thread ref");
extern void mac_drop_chain(mblk_t *, const char *, ...)