Function sctp_del_local_addr_restricted

freebsd/netinet/sctp_pcb.c:5491–5528

* Remove a local address from the TCB local address restricted list */

 * Remove a local address from the TCB local address restricted list
 */
void
sctp_del_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
{
	struct sctp_inpcb *inp;
	struct sctp_laddr *laddr;

	/*
	 * This is called by asconf work. It is assumed that a) The TCB is
	 * locked and b) The INP is locked. This is true in as much as I can
	 * trace through the entry asconf code where I did these locks.
	 * Again, the ASCONF code is a bit different in that it does lock
	 * the INP during its work often times. This must be since we don't
	 * want other proc's looking up things while what they are looking
	 * up is changing :-D
	 */

	inp = stcb->sctp_ep;
	/* if subset bound and don't allow ASCONF's, can't delete last */
	if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) &&
	    sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF)) {
		if (stcb->sctp_ep->laddr_count < 2) {
			/* can't delete last address */
			return;
		}
	}
	LIST_FOREACH(laddr, &stcb->asoc.sctp_restricted_addrs, sctp_nxt_addr) {
		/* remove the address if it exists */
		if (laddr->ifa == NULL)
			continue;
		if (laddr->ifa == ifa) {
			sctp_remove_laddr(laddr);
			return;
		}
	}

	/* address not found! */
	return;
}

/* sysctl */
static int sctp_max_number_of_assoc = SCTP_MAX_NUM_OF_ASOC;