sys/netinet/ip_carp.c

252 #define	CIF_LOCK_INIT(cif)	mtx_init(&(cif)->cif_mtx, "carp_if",   \
254 #define	CIF_LOCK_DESTROY(cif)	mtx_destroy(&(cif)->cif_mtx)
255 #define	CIF_LOCK_ASSERT(cif)	mtx_assert(&(cif)->cif_mtx, MA_OWNED)
256 #define	CIF_LOCK(cif)		mtx_lock(&(cif)->cif_mtx)
257 #define	CIF_UNLOCK(cif)		mtx_unlock(&(cif)->cif_mtx)
258 #define	CIF_FREE(cif)	do {				\
259 		CIF_LOCK(cif);				\
260 		if (TAILQ_EMPTY(&(cif)->cif_vrs))	\
261 			carp_free_if(cif);		\
263 			CIF_UNLOCK(cif);		\
1251 carp_multicast_setup(struct carp_if *cif, sa_family_t sa)
1253 	struct ifnet *ifp = cif->cif_ifp;
1260 		struct ip_moptions *imo = &cif->cif_imo;
1289 		struct ip6_moptions *im6o = &cif->cif_im6o;
1352 carp_multicast_cleanup(struct carp_if *cif, sa_family_t sa)
1360 		if (cif->cif_naddrs == 0) {
1361 			struct ip_moptions *imo = &cif->cif_imo;
1374 		if (cif->cif_naddrs6 == 0) {
1375 			struct ip6_moptions *im6o = &cif->cif_im6o;
1469 	struct carp_if *cif;
1471 	if ((cif = ifp->if_carp) == NULL)
1472 		cif = carp_alloc_if(ifp);
1494 	CIF_LOCK(cif);
1495 	TAILQ_INSERT_TAIL(&cif->cif_vrs, sc, sc_list);
1496 	CIF_UNLOCK(cif);
1523 	struct carp_if *cif = ifp->if_carp;
1531 	CIF_LOCK(cif);
1532 	TAILQ_REMOVE(&cif->cif_vrs, sc, sc_list);
1533 	CIF_UNLOCK(cif);
1555 	struct carp_if *cif;
1558 	cif = malloc(sizeof(*cif), M_CARP, M_WAITOK|M_ZERO);
1564 		cif->cif_flags |= CIF_PROMISC;
1566 	CIF_LOCK_INIT(cif);
1567 	cif->cif_ifp = ifp;
1568 	TAILQ_INIT(&cif->cif_vrs);
1571 	ifp->if_carp = cif;
1575 	return (cif);
1579 carp_free_if(struct carp_if *cif)
1581 	struct ifnet *ifp = cif->cif_ifp;
1583 	CIF_LOCK_ASSERT(cif);
1584 	KASSERT(TAILQ_EMPTY(&cif->cif_vrs), ("%s: softc list not empty",
1591 	CIF_LOCK_DESTROY(cif);
1593 	if (cif->cif_flags & CIF_PROMISC)
1597 	free(cif, M_CARP);
1803 	struct carp_if *cif = ifp->if_carp;
1827 	CIF_LOCK(cif);
1831 	CIF_UNLOCK(cif);
1837 	error = carp_multicast_setup(cif, ifa->ifa_addr->sa_family);
1839 		CIF_FREE(cif);
1851 		cif->cif_naddrs++;
1857 		cif->cif_naddrs6++;
1881 	struct carp_if *cif = ifp->if_carp;
1903 		cif->cif_naddrs--;
1909 		cif->cif_naddrs6--;
1916 	carp_multicast_cleanup(cif, ifa->ifa_addr->sa_family);
1929 	CIF_FREE(cif);