]> git.proxmox.com Git - mirror_frr.git/blobdiff - zebra/rtadv.c
ospfd: free unreachable router LSA node so that it is not left unreachable
[mirror_frr.git] / zebra / rtadv.c
index e1d2016e66d5aebbca6a823c973882b90ccf07d8..5d4ed1e424c48f80f85d4578467e7453a3950460 100644 (file)
@@ -73,6 +73,28 @@ DEFINE_MTYPE_STATIC(ZEBRA, ADV_IF, "Advertised Interface");
 #define ALLNODE   "ff02::1"
 #define ALLROUTER "ff02::2"
 
+/* adv list node */
+struct adv_if {
+       char name[INTERFACE_NAMSIZ];
+       struct adv_if_list_item list_item;
+};
+
+static int adv_if_cmp(const struct adv_if *a, const struct adv_if *b)
+{
+       return if_cmp_name_func(a->name, b->name);
+}
+
+DECLARE_SORTLIST_UNIQ(adv_if_list, struct adv_if, list_item, adv_if_cmp);
+
+static int rtadv_prefix_cmp(const struct rtadv_prefix *a,
+                           const struct rtadv_prefix *b)
+{
+       return prefix_cmp(&a->prefix, &b->prefix);
+}
+
+DECLARE_RBTREE_UNIQ(rtadv_prefixes, struct rtadv_prefix, item,
+                   rtadv_prefix_cmp);
+
 DEFINE_MTYPE_STATIC(ZEBRA, RTADV_RDNSS, "Router Advertisement RDNSS");
 DEFINE_MTYPE_STATIC(ZEBRA, RTADV_DNSSL, "Router Advertisement DNSSL");
 
@@ -315,7 +337,7 @@ static void rtadv_send_packet(int sock, struct interface *ifp,
        }
 
        /* Fill in prefix. */
-       for (ALL_LIST_ELEMENTS_RO(zif->rtadv.AdvPrefixList, node, rprefix)) {
+       frr_each (rtadv_prefixes, zif->rtadv.prefixes, rprefix) {
                struct nd_opt_prefix_info *pinfo;
 
                pinfo = (struct nd_opt_prefix_info *)(buf + len);
@@ -1065,31 +1087,20 @@ static void rtadv_prefix_free(struct rtadv_prefix *rtadv_prefix)
        XFREE(MTYPE_RTADV_PREFIX, rtadv_prefix);
 }
 
-static struct rtadv_prefix *rtadv_prefix_lookup(struct list *rplist,
-                                               struct prefix_ipv6 *p)
-{
-       struct listnode *node;
-       struct rtadv_prefix *rprefix;
-
-       for (ALL_LIST_ELEMENTS_RO(rplist, node, rprefix))
-               if (prefix_same((struct prefix *)&rprefix->prefix,
-                               (struct prefix *)p))
-                       return rprefix;
-       return NULL;
-}
-
-static struct rtadv_prefix *rtadv_prefix_get(struct list *rplist,
+static struct rtadv_prefix *rtadv_prefix_get(struct rtadv_prefixes_head *list,
                                             struct prefix_ipv6 *p)
 {
-       struct rtadv_prefix *rprefix;
+       struct rtadv_prefix *rprefix, ref;
 
-       rprefix = rtadv_prefix_lookup(rplist, p);
+       ref.prefix = *p;
+
+       rprefix = rtadv_prefixes_find(list, &ref);
        if (rprefix)
                return rprefix;
 
        rprefix = rtadv_prefix_new();
        memcpy(&rprefix->prefix, p, sizeof(struct prefix_ipv6));
-       listnode_add(rplist, rprefix);
+       rtadv_prefixes_add(list, rprefix);
 
        return rprefix;
 }
@@ -1107,7 +1118,7 @@ static void rtadv_prefix_set(struct zebra_if *zif, struct rtadv_prefix *rp)
 {
        struct rtadv_prefix *rprefix;
 
-       rprefix = rtadv_prefix_get(zif->rtadv.AdvPrefixList, &rp->prefix);
+       rprefix = rtadv_prefix_get(zif->rtadv.prefixes, &rp->prefix);
 
        /*
         * Set parameters based on where the prefix is created.
@@ -1142,7 +1153,7 @@ static int rtadv_prefix_reset(struct zebra_if *zif, struct rtadv_prefix *rp)
 {
        struct rtadv_prefix *rprefix;
 
-       rprefix = rtadv_prefix_lookup(zif->rtadv.AdvPrefixList, &rp->prefix);
+       rprefix = rtadv_prefixes_find(zif->rtadv.prefixes, rp);
        if (rprefix != NULL) {
 
                /*
@@ -1165,7 +1176,7 @@ static int rtadv_prefix_reset(struct zebra_if *zif, struct rtadv_prefix *rp)
                        }
                }
 
-               listnode_delete(zif->rtadv.AdvPrefixList, (void *)rprefix);
+               rtadv_prefixes_del(zif->rtadv.prefixes, rprefix);
                rtadv_prefix_free(rprefix);
                return 1;
        } else
@@ -1194,6 +1205,29 @@ void rtadv_delete_prefix(struct zebra_if *zif, const struct prefix *p)
        rtadv_prefix_reset(zif, &rp);
 }
 
+static void rtadv_start_interface_events(struct zebra_vrf *zvrf,
+                                        struct zebra_if *zif)
+{
+       struct adv_if *adv_if = NULL;
+
+       if (zif->ifp->ifindex == IFINDEX_INTERNAL) {
+               if (IS_ZEBRA_DEBUG_EVENT)
+                       zlog_debug(
+                               "%s(%s) has not configured an ifindex yet, delaying until we have one",
+                               zif->ifp->name, zvrf->vrf->name);
+               return;
+       }
+
+       adv_if = adv_if_add(zvrf, zif->ifp->name);
+       if (adv_if != NULL)
+               return; /* Already added */
+
+       if_join_all_router(zvrf->rtadv.sock, zif->ifp);
+
+       if (adv_if_list_count(&zvrf->rtadv.adv_if) == 1)
+               rtadv_event(zvrf, RTADV_START, 0);
+}
+
 static void ipv6_nd_suppress_ra_set(struct interface *ifp,
                                    enum ipv6_nd_suppress_ra_status status)
 {
@@ -1238,14 +1272,7 @@ static void ipv6_nd_suppress_ra_set(struct interface *ifp,
                                        RTADV_NUM_FAST_REXMITS;
                        }
 
-                       adv_if = adv_if_add(zvrf, ifp->name);
-                       if (adv_if != NULL)
-                               return; /* Alread added */
-
-                       if_join_all_router(zvrf->rtadv.sock, ifp);
-
-                       if (adv_if_list_count(&zvrf->rtadv.adv_if) == 1)
-                               rtadv_event(zvrf, RTADV_START, 0);
+                       rtadv_start_interface_events(zvrf, zif);
                }
        }
 }
@@ -1358,7 +1385,6 @@ void rtadv_stop_ra_all(void)
 {
        struct vrf *vrf;
        struct interface *ifp;
-       struct listnode *node, *nnode;
        struct zebra_if *zif;
        struct rtadv_prefix *rprefix;
 
@@ -1366,8 +1392,8 @@ void rtadv_stop_ra_all(void)
                FOR_ALL_INTERFACES (vrf, ifp) {
                        zif = ifp->info;
 
-                       for (ALL_LIST_ELEMENTS(zif->rtadv.AdvPrefixList,
-                                              node, nnode, rprefix))
+                       frr_each_safe (rtadv_prefixes, zif->rtadv.prefixes,
+                                      rprefix)
                                rtadv_prefix_reset(zif, rprefix);
 
                        rtadv_stop_ra(ifp);
@@ -2671,7 +2697,7 @@ static int rtadv_config_write(struct vty *vty, struct interface *ifp)
        if (zif->rtadv.AdvLinkMTU)
                vty_out(vty, " ipv6 nd mtu %d\n", zif->rtadv.AdvLinkMTU);
 
-       for (ALL_LIST_ELEMENTS_RO(zif->rtadv.AdvPrefixList, node, rprefix)) {
+       frr_each (rtadv_prefixes, zif->rtadv.prefixes, rprefix) {
                if ((rprefix->AdvPrefixCreate == PREFIX_SRC_MANUAL)
                    || (rprefix->AdvPrefixCreate == PREFIX_SRC_BOTH)) {
                        vty_out(vty, " ipv6 nd prefix %pFX", &rprefix->prefix);
@@ -2768,6 +2794,81 @@ static void rtadv_event(struct zebra_vrf *zvrf, enum rtadv_event event, int val)
        return;
 }
 
+void rtadv_if_up(struct zebra_if *zif)
+{
+       struct zebra_vrf *zvrf = rtadv_interface_get_zvrf(zif->ifp);
+
+       /* Enable fast tx of RA if enabled && RA interval is not in msecs */
+       if (zif->rtadv.AdvSendAdvertisements &&
+           (zif->rtadv.MaxRtrAdvInterval >= 1000) &&
+           zif->rtadv.UseFastRexmit) {
+               zif->rtadv.inFastRexmit = 1;
+               zif->rtadv.NumFastReXmitsRemain = RTADV_NUM_FAST_REXMITS;
+       }
+
+       /*
+        * startup the state machine, if it hasn't been already
+        * due to a delayed ifindex on startup ordering
+        */
+       if (zif->rtadv.AdvSendAdvertisements)
+               rtadv_start_interface_events(zvrf, zif);
+}
+
+void rtadv_if_init(struct zebra_if *zif)
+{
+       /* Set default router advertise values. */
+       struct rtadvconf *rtadv;
+
+       rtadv = &zif->rtadv;
+
+       rtadv->AdvSendAdvertisements = 0;
+       rtadv->MaxRtrAdvInterval = RTADV_MAX_RTR_ADV_INTERVAL;
+       rtadv->MinRtrAdvInterval = RTADV_MIN_RTR_ADV_INTERVAL;
+       rtadv->AdvIntervalTimer = 0;
+       rtadv->AdvManagedFlag = 0;
+       rtadv->AdvOtherConfigFlag = 0;
+       rtadv->AdvHomeAgentFlag = 0;
+       rtadv->AdvLinkMTU = 0;
+       rtadv->AdvReachableTime = 0;
+       rtadv->AdvRetransTimer = 0;
+       rtadv->AdvCurHopLimit = RTADV_DEFAULT_HOPLIMIT;
+       memset(&rtadv->lastadvcurhoplimit, 0,
+              sizeof(rtadv->lastadvcurhoplimit));
+       memset(&rtadv->lastadvmanagedflag, 0,
+              sizeof(rtadv->lastadvmanagedflag));
+       memset(&rtadv->lastadvotherconfigflag, 0,
+              sizeof(rtadv->lastadvotherconfigflag));
+       memset(&rtadv->lastadvreachabletime, 0,
+              sizeof(rtadv->lastadvreachabletime));
+       memset(&rtadv->lastadvretranstimer, 0,
+              sizeof(rtadv->lastadvretranstimer));
+       rtadv->AdvDefaultLifetime = -1; /* derive from MaxRtrAdvInterval */
+       rtadv->HomeAgentPreference = 0;
+       rtadv->HomeAgentLifetime = -1; /* derive from AdvDefaultLifetime */
+       rtadv->AdvIntervalOption = 0;
+       rtadv->UseFastRexmit = true;
+       rtadv->DefaultPreference = RTADV_PREF_MEDIUM;
+
+       rtadv_prefixes_init(rtadv->prefixes);
+
+       rtadv->AdvRDNSSList = list_new();
+       rtadv->AdvDNSSLList = list_new();
+}
+
+void rtadv_if_fini(struct zebra_if *zif)
+{
+       struct rtadvconf *rtadv;
+       struct rtadv_prefix *rp;
+
+       rtadv = &zif->rtadv;
+
+       while ((rp = rtadv_prefixes_pop(rtadv->prefixes)))
+               rtadv_prefix_free(rp);
+
+       list_delete(&rtadv->AdvRDNSSList);
+       list_delete(&rtadv->AdvDNSSLList);
+}
+
 void rtadv_vrf_init(struct zebra_vrf *zvrf)
 {
        if (!vrf_is_backend_netns() && (zvrf_id(zvrf) != VRF_DEFAULT))
@@ -2899,37 +3000,7 @@ bool rtadv_compiled_in(void)
        return true;
 }
 
-#else
-void rtadv_vrf_init(struct zebra_vrf *zvrf)
-{
-       /* Empty.*/;
-}
-
-void rtadv_cmd_init(void)
-{
-       /* Empty.*/;
-}
-
-void rtadv_add_prefix(struct zebra_if *zif, const struct prefix_ipv6 *p)
-{
-       /* Empty.*/;
-}
-
-void rtadv_delete_prefix(struct zebra_if *zif, const struct prefix *p)
-{
-       /* Empty.*/;
-}
-
-void rtadv_stop_ra(struct interface *ifp)
-{
-       /* Empty.*/;
-}
-
-void rtadv_stop_ra_all(void)
-{
-       /* Empty.*/;
-}
-
+#else /* !HAVE_RTADV */
 /*
  * If the end user does not have RADV enabled we should
  * handle this better