nd6_rtr: re-sort functions
Resort functions within file in a way that they depend on each other as that makes it easier to rework various things. Also allows us to remove file local function declarations. No functional changes. MFC after: 3 weeks Sponsored by: Netflix
This commit is contained in:
bz
parent
2cac79878c
commit
155a28899c
@ -73,24 +73,9 @@ __FBSDID("$FreeBSD$");
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#include <netinet/icmp6.h>
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#include <netinet6/scope6_var.h>
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static int rtpref(struct nd_defrouter *);
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static struct nd_defrouter *defrtrlist_update(struct nd_defrouter *);
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static int prelist_update(struct nd_prefixctl *, struct nd_defrouter *,
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struct mbuf *, int);
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static struct in6_ifaddr *in6_ifadd(struct nd_prefixctl *, int);
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static struct nd_pfxrouter *pfxrtr_lookup(struct nd_prefix *,
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struct nd_defrouter *);
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static void pfxrtr_add(struct nd_prefix *, struct nd_defrouter *);
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static void pfxrtr_del(struct nd_pfxrouter *);
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static struct nd_pfxrouter *find_pfxlist_reachable_router(struct nd_prefix *);
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static void defrouter_delreq(struct nd_defrouter *);
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static void nd6_rtmsg(int, struct rtentry *);
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static int in6_init_prefix_ltimes(struct nd_prefix *);
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static void in6_init_address_ltimes(struct nd_prefix *,
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struct in6_addrlifetime *);
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static int rt6_deleteroute(const struct rtentry *, void *);
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TAILQ_HEAD(nd6_drhead, nd_defrouter);
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VNET_DEFINE_STATIC(struct nd6_drhead, nd6_defrouter);
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@ -115,6 +100,8 @@ VNET_DEFINE(int, ip6_temp_regen_advance) = TEMPADDR_REGEN_ADVANCE;
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VNET_DEFINE(int, nd6_ignore_ipv6_only_ra) = 1;
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#endif
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SYSCTL_DECL(_net_inet6_icmp6);
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/* RTPREF_MEDIUM has to be 0! */
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#define RTPREF_HIGH 1
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#define RTPREF_MEDIUM 0
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@ -644,10 +631,71 @@ nd6_rtmsg(int cmd, struct rtentry *rt)
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ifa_free(ifa);
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}
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/*
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* default router list processing sub routines
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*/
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/* PFXRTR */
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static struct nd_pfxrouter *
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pfxrtr_lookup(struct nd_prefix *pr, struct nd_defrouter *dr)
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{
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struct nd_pfxrouter *search;
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ND6_LOCK_ASSERT();
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LIST_FOREACH(search, &pr->ndpr_advrtrs, pfr_entry) {
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if (search->router == dr)
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break;
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}
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return (search);
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}
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static void
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pfxrtr_add(struct nd_prefix *pr, struct nd_defrouter *dr)
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{
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struct nd_pfxrouter *new;
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bool update;
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ND6_UNLOCK_ASSERT();
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ND6_RLOCK();
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if (pfxrtr_lookup(pr, dr) != NULL) {
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ND6_RUNLOCK();
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return;
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}
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ND6_RUNLOCK();
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new = malloc(sizeof(*new), M_IP6NDP, M_NOWAIT | M_ZERO);
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if (new == NULL)
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return;
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defrouter_ref(dr);
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new->router = dr;
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ND6_WLOCK();
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if (pfxrtr_lookup(pr, dr) == NULL) {
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LIST_INSERT_HEAD(&pr->ndpr_advrtrs, new, pfr_entry);
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update = true;
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} else {
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/* We lost a race to add the reference. */
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defrouter_rele(dr);
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free(new, M_IP6NDP);
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update = false;
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}
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ND6_WUNLOCK();
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if (update)
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pfxlist_onlink_check();
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}
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static void
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pfxrtr_del(struct nd_pfxrouter *pfr)
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{
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ND6_WLOCK_ASSERT();
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LIST_REMOVE(pfr, pfr_entry);
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defrouter_rele(pfr->router);
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free(pfr, M_IP6NDP);
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}
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/* Default router list processing sub routines. */
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static void
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defrouter_addreq(struct nd_defrouter *new)
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{
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@ -675,31 +723,6 @@ defrouter_addreq(struct nd_defrouter *new)
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new->installed = 1;
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}
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struct nd_defrouter *
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defrouter_lookup_locked(struct in6_addr *addr, struct ifnet *ifp)
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{
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struct nd_defrouter *dr;
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ND6_LOCK_ASSERT();
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TAILQ_FOREACH(dr, &V_nd6_defrouter, dr_entry)
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if (dr->ifp == ifp && IN6_ARE_ADDR_EQUAL(addr, &dr->rtaddr)) {
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defrouter_ref(dr);
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return (dr);
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}
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return (NULL);
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}
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struct nd_defrouter *
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defrouter_lookup(struct in6_addr *addr, struct ifnet *ifp)
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{
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struct nd_defrouter *dr;
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ND6_RLOCK();
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dr = defrouter_lookup_locked(addr, ifp);
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ND6_RUNLOCK();
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return (dr);
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}
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/*
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* Remove the default route for a given router.
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* This is just a subroutine function for defrouter_select_fib(), and
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@ -731,49 +754,6 @@ defrouter_delreq(struct nd_defrouter *dr)
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dr->installed = 0;
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}
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/*
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* Remove all default routes from default router list.
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*/
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void
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defrouter_reset(void)
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{
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struct nd_defrouter *dr, **dra;
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int count, i;
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count = i = 0;
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/*
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* We can't delete routes with the ND lock held, so make a copy of the
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* current default router list and use that when deleting routes.
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*/
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ND6_RLOCK();
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TAILQ_FOREACH(dr, &V_nd6_defrouter, dr_entry)
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count++;
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ND6_RUNLOCK();
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dra = malloc(count * sizeof(*dra), M_TEMP, M_WAITOK | M_ZERO);
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ND6_RLOCK();
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TAILQ_FOREACH(dr, &V_nd6_defrouter, dr_entry) {
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if (i == count)
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break;
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defrouter_ref(dr);
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dra[i++] = dr;
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}
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ND6_RUNLOCK();
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for (i = 0; i < count && dra[i] != NULL; i++) {
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defrouter_delreq(dra[i]);
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defrouter_rele(dra[i]);
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}
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free(dra, M_TEMP);
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/*
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* XXX should we also nuke any default routers in the kernel, by
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* going through them by rtalloc1()?
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*/
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}
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static void
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defrouter_del(struct nd_defrouter *dr)
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{
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@ -826,6 +806,74 @@ defrouter_del(struct nd_defrouter *dr)
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}
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struct nd_defrouter *
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defrouter_lookup_locked(struct in6_addr *addr, struct ifnet *ifp)
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{
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struct nd_defrouter *dr;
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ND6_LOCK_ASSERT();
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TAILQ_FOREACH(dr, &V_nd6_defrouter, dr_entry)
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if (dr->ifp == ifp && IN6_ARE_ADDR_EQUAL(addr, &dr->rtaddr)) {
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defrouter_ref(dr);
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return (dr);
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}
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return (NULL);
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}
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struct nd_defrouter *
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defrouter_lookup(struct in6_addr *addr, struct ifnet *ifp)
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{
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struct nd_defrouter *dr;
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ND6_RLOCK();
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dr = defrouter_lookup_locked(addr, ifp);
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ND6_RUNLOCK();
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return (dr);
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}
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/*
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* Remove all default routes from default router list.
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*/
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void
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defrouter_reset(void)
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{
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struct nd_defrouter *dr, **dra;
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int count, i;
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count = i = 0;
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/*
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* We can't delete routes with the ND lock held, so make a copy of the
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* current default router list and use that when deleting routes.
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*/
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ND6_RLOCK();
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TAILQ_FOREACH(dr, &V_nd6_defrouter, dr_entry)
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count++;
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ND6_RUNLOCK();
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dra = malloc(count * sizeof(*dra), M_TEMP, M_WAITOK | M_ZERO);
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ND6_RLOCK();
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TAILQ_FOREACH(dr, &V_nd6_defrouter, dr_entry) {
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if (i == count)
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break;
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defrouter_ref(dr);
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dra[i++] = dr;
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}
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ND6_RUNLOCK();
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for (i = 0; i < count && dra[i] != NULL; i++) {
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defrouter_delreq(dra[i]);
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defrouter_rele(dra[i]);
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}
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free(dra, M_TEMP);
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/*
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* XXX should we also nuke any default routers in the kernel, by
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* going through them by rtalloc1()?
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*/
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}
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/*
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* Look up a matching default router list entry and remove it. Returns true if a
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* matching entry was found, false otherwise.
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@ -849,6 +897,33 @@ defrouter_remove(struct in6_addr *addr, struct ifnet *ifp)
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return (true);
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}
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/*
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* for default router selection
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* regards router-preference field as a 2-bit signed integer
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*/
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static int
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rtpref(struct nd_defrouter *dr)
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{
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switch (dr->raflags & ND_RA_FLAG_RTPREF_MASK) {
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case ND_RA_FLAG_RTPREF_HIGH:
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return (RTPREF_HIGH);
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case ND_RA_FLAG_RTPREF_MEDIUM:
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case ND_RA_FLAG_RTPREF_RSV:
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return (RTPREF_MEDIUM);
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case ND_RA_FLAG_RTPREF_LOW:
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return (RTPREF_LOW);
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default:
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/*
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* This case should never happen. If it did, it would mean a
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* serious bug of kernel internal. We thus always bark here.
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* Or, can we even panic?
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*/
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log(LOG_ERR, "rtpref: impossible RA flag %x\n", dr->raflags);
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return (RTPREF_INVALID);
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}
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/* NOTREACHED */
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}
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/*
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* Default Router Selection according to Section 6.3.6 of RFC 2461 and
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* draft-ietf-ipngwg-router-selection:
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@ -987,33 +1062,6 @@ defrouter_select_fib(int fibnum)
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defrouter_rele(selected_dr);
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}
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/*
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* for default router selection
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* regards router-preference field as a 2-bit signed integer
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*/
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static int
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rtpref(struct nd_defrouter *dr)
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{
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switch (dr->raflags & ND_RA_FLAG_RTPREF_MASK) {
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case ND_RA_FLAG_RTPREF_HIGH:
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return (RTPREF_HIGH);
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case ND_RA_FLAG_RTPREF_MEDIUM:
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case ND_RA_FLAG_RTPREF_RSV:
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return (RTPREF_MEDIUM);
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case ND_RA_FLAG_RTPREF_LOW:
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return (RTPREF_LOW);
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default:
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/*
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* This case should never happen. If it did, it would mean a
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* serious bug of kernel internal. We thus always bark here.
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* Or, can we even panic?
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*/
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log(LOG_ERR, "rtpref: impossible RA flag %x\n", dr->raflags);
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return (RTPREF_INVALID);
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}
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/* NOTREACHED */
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}
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static struct nd_defrouter *
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defrtrlist_update(struct nd_defrouter *new)
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{
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@ -1112,66 +1160,154 @@ defrtrlist_update(struct nd_defrouter *new)
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return (n);
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}
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static struct nd_pfxrouter *
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pfxrtr_lookup(struct nd_prefix *pr, struct nd_defrouter *dr)
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static int
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in6_init_prefix_ltimes(struct nd_prefix *ndpr)
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{
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struct nd_pfxrouter *search;
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if (ndpr->ndpr_pltime == ND6_INFINITE_LIFETIME)
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ndpr->ndpr_preferred = 0;
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else
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ndpr->ndpr_preferred = time_uptime + ndpr->ndpr_pltime;
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if (ndpr->ndpr_vltime == ND6_INFINITE_LIFETIME)
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ndpr->ndpr_expire = 0;
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else
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ndpr->ndpr_expire = time_uptime + ndpr->ndpr_vltime;
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ND6_LOCK_ASSERT();
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LIST_FOREACH(search, &pr->ndpr_advrtrs, pfr_entry) {
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if (search->router == dr)
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break;
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}
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return (search);
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return 0;
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}
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static void
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pfxrtr_add(struct nd_prefix *pr, struct nd_defrouter *dr)
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in6_init_address_ltimes(struct nd_prefix *new, struct in6_addrlifetime *lt6)
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{
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struct nd_pfxrouter *new;
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bool update;
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ND6_UNLOCK_ASSERT();
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ND6_RLOCK();
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if (pfxrtr_lookup(pr, dr) != NULL) {
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ND6_RUNLOCK();
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return;
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/* init ia6t_expire */
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if (lt6->ia6t_vltime == ND6_INFINITE_LIFETIME)
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lt6->ia6t_expire = 0;
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else {
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lt6->ia6t_expire = time_uptime;
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lt6->ia6t_expire += lt6->ia6t_vltime;
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}
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ND6_RUNLOCK();
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new = malloc(sizeof(*new), M_IP6NDP, M_NOWAIT | M_ZERO);
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if (new == NULL)
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return;
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defrouter_ref(dr);
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new->router = dr;
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ND6_WLOCK();
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if (pfxrtr_lookup(pr, dr) == NULL) {
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LIST_INSERT_HEAD(&pr->ndpr_advrtrs, new, pfr_entry);
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update = true;
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} else {
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/* We lost a race to add the reference. */
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defrouter_rele(dr);
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free(new, M_IP6NDP);
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update = false;
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/* init ia6t_preferred */
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if (lt6->ia6t_pltime == ND6_INFINITE_LIFETIME)
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lt6->ia6t_preferred = 0;
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else {
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lt6->ia6t_preferred = time_uptime;
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lt6->ia6t_preferred += lt6->ia6t_pltime;
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}
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ND6_WUNLOCK();
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if (update)
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pfxlist_onlink_check();
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}
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static void
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pfxrtr_del(struct nd_pfxrouter *pfr)
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static struct in6_ifaddr *
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in6_ifadd(struct nd_prefixctl *pr, int mcast)
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{
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struct ifnet *ifp = pr->ndpr_ifp;
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struct ifaddr *ifa;
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struct in6_aliasreq ifra;
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struct in6_ifaddr *ia, *ib;
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int error, plen0;
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struct in6_addr mask;
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int prefixlen = pr->ndpr_plen;
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int updateflags;
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char ip6buf[INET6_ADDRSTRLEN];
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ND6_WLOCK_ASSERT();
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in6_prefixlen2mask(&mask, prefixlen);
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LIST_REMOVE(pfr, pfr_entry);
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defrouter_rele(pfr->router);
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free(pfr, M_IP6NDP);
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/*
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* find a link-local address (will be interface ID).
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* Is it really mandatory? Theoretically, a global or a site-local
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* address can be configured without a link-local address, if we
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* have a unique interface identifier...
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*
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* it is not mandatory to have a link-local address, we can generate
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* interface identifier on the fly. we do this because:
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* (1) it should be the easiest way to find interface identifier.
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* (2) RFC2462 5.4 suggesting the use of the same interface identifier
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* for multiple addresses on a single interface, and possible shortcut
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* of DAD. we omitted DAD for this reason in the past.
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* (3) a user can prevent autoconfiguration of global address
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* by removing link-local address by hand (this is partly because we
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* don't have other way to control the use of IPv6 on an interface.
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* this has been our design choice - cf. NRL's "ifconfig auto").
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* (4) it is easier to manage when an interface has addresses
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* with the same interface identifier, than to have multiple addresses
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* with different interface identifiers.
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*/
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ifa = (struct ifaddr *)in6ifa_ifpforlinklocal(ifp, 0); /* 0 is OK? */
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if (ifa)
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ib = (struct in6_ifaddr *)ifa;
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else
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return NULL;
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/* prefixlen + ifidlen must be equal to 128 */
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plen0 = in6_mask2len(&ib->ia_prefixmask.sin6_addr, NULL);
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if (prefixlen != plen0) {
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ifa_free(ifa);
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nd6log((LOG_INFO, "in6_ifadd: wrong prefixlen for %s "
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"(prefix=%d ifid=%d)\n",
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if_name(ifp), prefixlen, 128 - plen0));
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return NULL;
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}
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/* make ifaddr */
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in6_prepare_ifra(&ifra, &pr->ndpr_prefix.sin6_addr, &mask);
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IN6_MASK_ADDR(&ifra.ifra_addr.sin6_addr, &mask);
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/* interface ID */
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ifra.ifra_addr.sin6_addr.s6_addr32[0] |=
|
||||
(ib->ia_addr.sin6_addr.s6_addr32[0] & ~mask.s6_addr32[0]);
|
||||
ifra.ifra_addr.sin6_addr.s6_addr32[1] |=
|
||||
(ib->ia_addr.sin6_addr.s6_addr32[1] & ~mask.s6_addr32[1]);
|
||||
ifra.ifra_addr.sin6_addr.s6_addr32[2] |=
|
||||
(ib->ia_addr.sin6_addr.s6_addr32[2] & ~mask.s6_addr32[2]);
|
||||
ifra.ifra_addr.sin6_addr.s6_addr32[3] |=
|
||||
(ib->ia_addr.sin6_addr.s6_addr32[3] & ~mask.s6_addr32[3]);
|
||||
ifa_free(ifa);
|
||||
|
||||
/* lifetimes. */
|
||||
ifra.ifra_lifetime.ia6t_vltime = pr->ndpr_vltime;
|
||||
ifra.ifra_lifetime.ia6t_pltime = pr->ndpr_pltime;
|
||||
|
||||
/* XXX: scope zone ID? */
|
||||
|
||||
ifra.ifra_flags |= IN6_IFF_AUTOCONF; /* obey autoconf */
|
||||
|
||||
/*
|
||||
* Make sure that we do not have this address already. This should
|
||||
* usually not happen, but we can still see this case, e.g., if we
|
||||
* have manually configured the exact address to be configured.
|
||||
*/
|
||||
ifa = (struct ifaddr *)in6ifa_ifpwithaddr(ifp,
|
||||
&ifra.ifra_addr.sin6_addr);
|
||||
if (ifa != NULL) {
|
||||
ifa_free(ifa);
|
||||
/* this should be rare enough to make an explicit log */
|
||||
log(LOG_INFO, "in6_ifadd: %s is already configured\n",
|
||||
ip6_sprintf(ip6buf, &ifra.ifra_addr.sin6_addr));
|
||||
return (NULL);
|
||||
}
|
||||
|
||||
/*
|
||||
* Allocate ifaddr structure, link into chain, etc.
|
||||
* If we are going to create a new address upon receiving a multicasted
|
||||
* RA, we need to impose a random delay before starting DAD.
|
||||
* [draft-ietf-ipv6-rfc2462bis-02.txt, Section 5.4.2]
|
||||
*/
|
||||
updateflags = 0;
|
||||
if (mcast)
|
||||
updateflags |= IN6_IFAUPDATE_DADDELAY;
|
||||
if ((error = in6_update_ifa(ifp, &ifra, NULL, updateflags)) != 0) {
|
||||
nd6log((LOG_ERR,
|
||||
"in6_ifadd: failed to make ifaddr %s on %s (errno=%d)\n",
|
||||
ip6_sprintf(ip6buf, &ifra.ifra_addr.sin6_addr),
|
||||
if_name(ifp), error));
|
||||
return (NULL); /* ifaddr must not have been allocated. */
|
||||
}
|
||||
|
||||
ia = in6ifa_ifpwithaddr(ifp, &ifra.ifra_addr.sin6_addr);
|
||||
/*
|
||||
* XXXRW: Assumption of non-NULLness here might not be true with
|
||||
* fine-grained locking -- should we validate it? Or just return
|
||||
* earlier ifa rather than looking it up again?
|
||||
*/
|
||||
return (ia); /* this is always non-NULL and referenced. */
|
||||
}
|
||||
|
||||
static struct nd_prefix *
|
||||
@ -2171,121 +2307,6 @@ nd6_prefix_offlink(struct nd_prefix *pr)
|
||||
return (error);
|
||||
}
|
||||
|
||||
static struct in6_ifaddr *
|
||||
in6_ifadd(struct nd_prefixctl *pr, int mcast)
|
||||
{
|
||||
struct ifnet *ifp = pr->ndpr_ifp;
|
||||
struct ifaddr *ifa;
|
||||
struct in6_aliasreq ifra;
|
||||
struct in6_ifaddr *ia, *ib;
|
||||
int error, plen0;
|
||||
struct in6_addr mask;
|
||||
int prefixlen = pr->ndpr_plen;
|
||||
int updateflags;
|
||||
char ip6buf[INET6_ADDRSTRLEN];
|
||||
|
||||
in6_prefixlen2mask(&mask, prefixlen);
|
||||
|
||||
/*
|
||||
* find a link-local address (will be interface ID).
|
||||
* Is it really mandatory? Theoretically, a global or a site-local
|
||||
* address can be configured without a link-local address, if we
|
||||
* have a unique interface identifier...
|
||||
*
|
||||
* it is not mandatory to have a link-local address, we can generate
|
||||
* interface identifier on the fly. we do this because:
|
||||
* (1) it should be the easiest way to find interface identifier.
|
||||
* (2) RFC2462 5.4 suggesting the use of the same interface identifier
|
||||
* for multiple addresses on a single interface, and possible shortcut
|
||||
* of DAD. we omitted DAD for this reason in the past.
|
||||
* (3) a user can prevent autoconfiguration of global address
|
||||
* by removing link-local address by hand (this is partly because we
|
||||
* don't have other way to control the use of IPv6 on an interface.
|
||||
* this has been our design choice - cf. NRL's "ifconfig auto").
|
||||
* (4) it is easier to manage when an interface has addresses
|
||||
* with the same interface identifier, than to have multiple addresses
|
||||
* with different interface identifiers.
|
||||
*/
|
||||
ifa = (struct ifaddr *)in6ifa_ifpforlinklocal(ifp, 0); /* 0 is OK? */
|
||||
if (ifa)
|
||||
ib = (struct in6_ifaddr *)ifa;
|
||||
else
|
||||
return NULL;
|
||||
|
||||
/* prefixlen + ifidlen must be equal to 128 */
|
||||
plen0 = in6_mask2len(&ib->ia_prefixmask.sin6_addr, NULL);
|
||||
if (prefixlen != plen0) {
|
||||
ifa_free(ifa);
|
||||
nd6log((LOG_INFO, "in6_ifadd: wrong prefixlen for %s "
|
||||
"(prefix=%d ifid=%d)\n",
|
||||
if_name(ifp), prefixlen, 128 - plen0));
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* make ifaddr */
|
||||
in6_prepare_ifra(&ifra, &pr->ndpr_prefix.sin6_addr, &mask);
|
||||
|
||||
IN6_MASK_ADDR(&ifra.ifra_addr.sin6_addr, &mask);
|
||||
/* interface ID */
|
||||
ifra.ifra_addr.sin6_addr.s6_addr32[0] |=
|
||||
(ib->ia_addr.sin6_addr.s6_addr32[0] & ~mask.s6_addr32[0]);
|
||||
ifra.ifra_addr.sin6_addr.s6_addr32[1] |=
|
||||
(ib->ia_addr.sin6_addr.s6_addr32[1] & ~mask.s6_addr32[1]);
|
||||
ifra.ifra_addr.sin6_addr.s6_addr32[2] |=
|
||||
(ib->ia_addr.sin6_addr.s6_addr32[2] & ~mask.s6_addr32[2]);
|
||||
ifra.ifra_addr.sin6_addr.s6_addr32[3] |=
|
||||
(ib->ia_addr.sin6_addr.s6_addr32[3] & ~mask.s6_addr32[3]);
|
||||
ifa_free(ifa);
|
||||
|
||||
/* lifetimes. */
|
||||
ifra.ifra_lifetime.ia6t_vltime = pr->ndpr_vltime;
|
||||
ifra.ifra_lifetime.ia6t_pltime = pr->ndpr_pltime;
|
||||
|
||||
/* XXX: scope zone ID? */
|
||||
|
||||
ifra.ifra_flags |= IN6_IFF_AUTOCONF; /* obey autoconf */
|
||||
|
||||
/*
|
||||
* Make sure that we do not have this address already. This should
|
||||
* usually not happen, but we can still see this case, e.g., if we
|
||||
* have manually configured the exact address to be configured.
|
||||
*/
|
||||
ifa = (struct ifaddr *)in6ifa_ifpwithaddr(ifp,
|
||||
&ifra.ifra_addr.sin6_addr);
|
||||
if (ifa != NULL) {
|
||||
ifa_free(ifa);
|
||||
/* this should be rare enough to make an explicit log */
|
||||
log(LOG_INFO, "in6_ifadd: %s is already configured\n",
|
||||
ip6_sprintf(ip6buf, &ifra.ifra_addr.sin6_addr));
|
||||
return (NULL);
|
||||
}
|
||||
|
||||
/*
|
||||
* Allocate ifaddr structure, link into chain, etc.
|
||||
* If we are going to create a new address upon receiving a multicasted
|
||||
* RA, we need to impose a random delay before starting DAD.
|
||||
* [draft-ietf-ipv6-rfc2462bis-02.txt, Section 5.4.2]
|
||||
*/
|
||||
updateflags = 0;
|
||||
if (mcast)
|
||||
updateflags |= IN6_IFAUPDATE_DADDELAY;
|
||||
if ((error = in6_update_ifa(ifp, &ifra, NULL, updateflags)) != 0) {
|
||||
nd6log((LOG_ERR,
|
||||
"in6_ifadd: failed to make ifaddr %s on %s (errno=%d)\n",
|
||||
ip6_sprintf(ip6buf, &ifra.ifra_addr.sin6_addr),
|
||||
if_name(ifp), error));
|
||||
return (NULL); /* ifaddr must not have been allocated. */
|
||||
}
|
||||
|
||||
ia = in6ifa_ifpwithaddr(ifp, &ifra.ifra_addr.sin6_addr);
|
||||
/*
|
||||
* XXXRW: Assumption of non-NULLness here might not be true with
|
||||
* fine-grained locking -- should we validate it? Or just return
|
||||
* earlier ifa rather than looking it up again?
|
||||
*/
|
||||
return (ia); /* this is always non-NULL and referenced. */
|
||||
}
|
||||
|
||||
/*
|
||||
* ia0 - corresponding public address
|
||||
*/
|
||||
@ -2410,58 +2431,6 @@ in6_tmpifadd(const struct in6_ifaddr *ia0, int forcegen, int delay)
|
||||
return (0);
|
||||
}
|
||||
|
||||
static int
|
||||
in6_init_prefix_ltimes(struct nd_prefix *ndpr)
|
||||
{
|
||||
if (ndpr->ndpr_pltime == ND6_INFINITE_LIFETIME)
|
||||
ndpr->ndpr_preferred = 0;
|
||||
else
|
||||
ndpr->ndpr_preferred = time_uptime + ndpr->ndpr_pltime;
|
||||
if (ndpr->ndpr_vltime == ND6_INFINITE_LIFETIME)
|
||||
ndpr->ndpr_expire = 0;
|
||||
else
|
||||
ndpr->ndpr_expire = time_uptime + ndpr->ndpr_vltime;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void
|
||||
in6_init_address_ltimes(struct nd_prefix *new, struct in6_addrlifetime *lt6)
|
||||
{
|
||||
/* init ia6t_expire */
|
||||
if (lt6->ia6t_vltime == ND6_INFINITE_LIFETIME)
|
||||
lt6->ia6t_expire = 0;
|
||||
else {
|
||||
lt6->ia6t_expire = time_uptime;
|
||||
lt6->ia6t_expire += lt6->ia6t_vltime;
|
||||
}
|
||||
|
||||
/* init ia6t_preferred */
|
||||
if (lt6->ia6t_pltime == ND6_INFINITE_LIFETIME)
|
||||
lt6->ia6t_preferred = 0;
|
||||
else {
|
||||
lt6->ia6t_preferred = time_uptime;
|
||||
lt6->ia6t_preferred += lt6->ia6t_pltime;
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Delete all the routing table entries that use the specified gateway.
|
||||
* XXX: this function causes search through all entries of routing table, so
|
||||
* it shouldn't be called when acting as a router.
|
||||
*/
|
||||
void
|
||||
rt6_flush(struct in6_addr *gateway, struct ifnet *ifp)
|
||||
{
|
||||
|
||||
/* We'll care only link-local addresses */
|
||||
if (!IN6_IS_ADDR_LINKLOCAL(gateway))
|
||||
return;
|
||||
|
||||
/* XXX Do we really need to walk any but the default FIB? */
|
||||
rt_foreach_fib_walk_del(AF_INET6, rt6_deleteroute, (void *)gateway);
|
||||
}
|
||||
|
||||
static int
|
||||
rt6_deleteroute(const struct rtentry *rt, void *arg)
|
||||
{
|
||||
@ -2494,6 +2463,23 @@ rt6_deleteroute(const struct rtentry *rt, void *arg)
|
||||
#undef SIN6
|
||||
}
|
||||
|
||||
/*
|
||||
* Delete all the routing table entries that use the specified gateway.
|
||||
* XXX: this function causes search through all entries of routing table, so
|
||||
* it shouldn't be called when acting as a router.
|
||||
*/
|
||||
void
|
||||
rt6_flush(struct in6_addr *gateway, struct ifnet *ifp)
|
||||
{
|
||||
|
||||
/* We'll care only link-local addresses */
|
||||
if (!IN6_IS_ADDR_LINKLOCAL(gateway))
|
||||
return;
|
||||
|
||||
/* XXX Do we really need to walk any but the default FIB? */
|
||||
rt_foreach_fib_walk_del(AF_INET6, rt6_deleteroute, (void *)gateway);
|
||||
}
|
||||
|
||||
int
|
||||
nd6_setdefaultiface(int ifindex)
|
||||
{
|
||||
@ -2522,47 +2508,6 @@ nd6_setdefaultiface(int ifindex)
|
||||
return (error);
|
||||
}
|
||||
|
||||
static int
|
||||
nd6_sysctl_drlist(SYSCTL_HANDLER_ARGS)
|
||||
{
|
||||
struct in6_defrouter d;
|
||||
struct nd_defrouter *dr;
|
||||
int error;
|
||||
|
||||
if (req->newptr != NULL)
|
||||
return (EPERM);
|
||||
|
||||
error = sysctl_wire_old_buffer(req, 0);
|
||||
if (error != 0)
|
||||
return (error);
|
||||
|
||||
bzero(&d, sizeof(d));
|
||||
d.rtaddr.sin6_family = AF_INET6;
|
||||
d.rtaddr.sin6_len = sizeof(d.rtaddr);
|
||||
|
||||
ND6_RLOCK();
|
||||
TAILQ_FOREACH(dr, &V_nd6_defrouter, dr_entry) {
|
||||
d.rtaddr.sin6_addr = dr->rtaddr;
|
||||
error = sa6_recoverscope(&d.rtaddr);
|
||||
if (error != 0)
|
||||
break;
|
||||
d.flags = dr->raflags;
|
||||
d.rtlifetime = dr->rtlifetime;
|
||||
d.expire = dr->expire + (time_second - time_uptime);
|
||||
d.if_index = dr->ifp->if_index;
|
||||
error = SYSCTL_OUT(req, &d, sizeof(d));
|
||||
if (error != 0)
|
||||
break;
|
||||
}
|
||||
ND6_RUNLOCK();
|
||||
return (error);
|
||||
}
|
||||
SYSCTL_DECL(_net_inet6_icmp6);
|
||||
SYSCTL_PROC(_net_inet6_icmp6, ICMPV6CTL_ND6_DRLIST, nd6_drlist,
|
||||
CTLTYPE_OPAQUE | CTLFLAG_RD | CTLFLAG_MPSAFE,
|
||||
NULL, 0, nd6_sysctl_drlist, "S,in6_defrouter",
|
||||
"NDP default router list");
|
||||
|
||||
bool
|
||||
nd6_defrouter_list_empty(void)
|
||||
{
|
||||
@ -2650,3 +2595,43 @@ nd6_defrouter_init(void)
|
||||
|
||||
TAILQ_INIT(&V_nd6_defrouter);
|
||||
}
|
||||
|
||||
static int
|
||||
nd6_sysctl_drlist(SYSCTL_HANDLER_ARGS)
|
||||
{
|
||||
struct in6_defrouter d;
|
||||
struct nd_defrouter *dr;
|
||||
int error;
|
||||
|
||||
if (req->newptr != NULL)
|
||||
return (EPERM);
|
||||
|
||||
error = sysctl_wire_old_buffer(req, 0);
|
||||
if (error != 0)
|
||||
return (error);
|
||||
|
||||
bzero(&d, sizeof(d));
|
||||
d.rtaddr.sin6_family = AF_INET6;
|
||||
d.rtaddr.sin6_len = sizeof(d.rtaddr);
|
||||
|
||||
ND6_RLOCK();
|
||||
TAILQ_FOREACH(dr, &V_nd6_defrouter, dr_entry) {
|
||||
d.rtaddr.sin6_addr = dr->rtaddr;
|
||||
error = sa6_recoverscope(&d.rtaddr);
|
||||
if (error != 0)
|
||||
break;
|
||||
d.flags = dr->raflags;
|
||||
d.rtlifetime = dr->rtlifetime;
|
||||
d.expire = dr->expire + (time_second - time_uptime);
|
||||
d.if_index = dr->ifp->if_index;
|
||||
error = SYSCTL_OUT(req, &d, sizeof(d));
|
||||
if (error != 0)
|
||||
break;
|
||||
}
|
||||
ND6_RUNLOCK();
|
||||
return (error);
|
||||
}
|
||||
SYSCTL_PROC(_net_inet6_icmp6, ICMPV6CTL_ND6_DRLIST, nd6_drlist,
|
||||
CTLTYPE_OPAQUE | CTLFLAG_RD | CTLFLAG_MPSAFE,
|
||||
NULL, 0, nd6_sysctl_drlist, "S,in6_defrouter",
|
||||
"NDP default router list");
|
||||
|
||||
Loading…
Reference in New Issue
Block a user