nm_find_bridge
b = nm_find_bridge(name, 0 /* don't create */, NULL);
b = nm_find_bridge(nr->nifr_name, 0, NULL);
b = nm_find_bridge(name, 0 /* don't create */, NULL);
b = nm_find_bridge(nr_name, create, ops);
b = nm_find_bridge(hdr->nr_name, 0 /* don't create */, NULL);
b = nm_find_bridge(hdr->nr_name, 0 /* don't create */, NULL);
struct nm_bridge *nm_find_bridge(const char *name, int create, struct netmap_bdg_ops *ops);
b = nm_find_bridge(bdg_name, 0 /* don't create */, NULL);
b = nm_find_bridge(bdg_name, 1 /* create */, &vale_bdg_ops);
b = nm_find_bridge(bdg_name, 0 /* don't create */, NULL);
b = nm_find_bridge(hdr->nr_name, 0 /* don't create */, NULL);