netmap_mem_find
nmd = netmap_mem_find(req->nr_mem_id);
nmd = netmap_mem_find(req->nr_mem_id);
nmd = netmap_mem_find(req->nr_mem_id ? req->nr_mem_id : 1);
nmd = netmap_mem_find(req->reg.nr_mem_id);
struct netmap_mem_d* netmap_mem_find(nm_memid_t);
nmd = netmap_mem_find(req->nr_mem_id);