unix_domain
struct unix_domain *m_client;
struct unix_domain *udom = NULL;
udom = container_of(dom, struct unix_domain, h);
static int __ip_map_update(struct cache_detail *cd, struct ip_map *ipm, struct unix_domain *udom, time64_t expiry);
container_of(dom, struct unix_domain, h),
struct unix_domain *udom, time64_t expiry)
struct unix_domain *ud = container_of(dom, struct unix_domain, h);
struct unix_domain *new = NULL;