ST_RING_NUM_PROTO
mblk_t *headmp[ST_RING_NUM_PROTO] = { 0 };
mblk_t *tailmp[ST_RING_NUM_PROTO] = { 0 };
int cnt[ST_RING_NUM_PROTO] = { 0 };
size_t sz[ST_RING_NUM_PROTO] = { 0 };
mblk_t *headmp[ST_RING_NUM_PROTO][MAX_SR_FANOUT];
mblk_t *tailmp[ST_RING_NUM_PROTO][MAX_SR_FANOUT];
int cnt[ST_RING_NUM_PROTO][MAX_SR_FANOUT];
size_t sz[ST_RING_NUM_PROTO][MAX_SR_FANOUT];
fanout_lane = index / ST_RING_NUM_PROTO;