Function sctp_add_addr_to_vrf

freebsd/netinet/sctp_pcb.c:473–715

}

struct sctp_ifa *
sctp_add_addr_to_vrf(uint32_t vrf_id, void *ifn, uint32_t ifn_index,
    uint32_t ifn_type, const char *if_name, void *ifa,
    struct sockaddr *addr, uint32_t ifa_flags,
    int dynamic_add)
{
	struct sctp_vrf *vrf;
	struct sctp_ifn *sctp_ifnp, *new_sctp_ifnp;
	struct sctp_ifa *sctp_ifap, *new_sctp_ifap;
	struct sctp_ifalist *hash_addr_head;
	struct sctp_ifnlist *hash_ifn_head;
	uint32_t hash_of_addr;
	int new_ifn_af = 0;

#ifdef SCTP_DEBUG
	SCTPDBG(SCTP_DEBUG_PCB4, "vrf_id 0x%x: adding address: ", vrf_id);
	SCTPDBG_ADDR(SCTP_DEBUG_PCB4, addr);
#endif
	SCTP_MALLOC(new_sctp_ifnp, struct sctp_ifn *,
	    sizeof(struct sctp_ifn), SCTP_M_IFN);
	if (new_sctp_ifnp == NULL) {
#ifdef INVARIANTS
		panic("No memory for IFN");
#endif
		return (NULL);
	}
	SCTP_MALLOC(new_sctp_ifap, struct sctp_ifa *, sizeof(struct sctp_ifa), SCTP_M_IFA);
	if (new_sctp_ifap == NULL) {
#ifdef INVARIANTS
		panic("No memory for IFA");
#endif
		SCTP_FREE(new_sctp_ifnp, SCTP_M_IFN);
		return (NULL);
	}

	SCTP_IPI_ADDR_WLOCK();
	sctp_ifnp = sctp_find_ifn(ifn, ifn_index);
	if (sctp_ifnp) {
		vrf = sctp_ifnp->vrf;
	} else {
		vrf = sctp_find_vrf(vrf_id);
		if (vrf == NULL) {
			vrf = sctp_allocate_vrf(vrf_id);
			if (vrf == NULL) {
				SCTP_IPI_ADDR_WUNLOCK();
				SCTP_FREE(new_sctp_ifnp, SCTP_M_IFN);
				SCTP_FREE(new_sctp_ifap, SCTP_M_IFA);
				return (NULL);
			}
		}
	}
	if (sctp_ifnp == NULL) {
		/*
		 * build one and add it, can't hold lock until after malloc
		 * done though.
		 */
		sctp_ifnp = new_sctp_ifnp;
		new_sctp_ifnp = NULL;