gnrc: adapt for gnrc_ndp_router

RIOT-OS · Sep 2, 2015 · 10e571d · 10e571d
1 parent abe63b3
commit 10e571d
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Showing 3 changed files with 55 additions and 1 deletion.
diff --git a/sys/net/gnrc/network_layer/icmpv6/gnrc_icmpv6.c b/sys/net/gnrc/network_layer/icmpv6/gnrc_icmpv6.c
@@ -87,10 +87,13 @@ void gnrc_icmpv6_demux(kernel_pid_t iface, gnrc_pktsnip_t *pkt)
             break;
 #endif
 
+#if (defined(MODULE_GNRC_NDP_ROUTER) || defined(MODULE_GNRC_SIXLOWPAN_ND_ROUTER))
         case ICMPV6_RTR_SOL:
             DEBUG("icmpv6: router solicitation received\n");
-            /* TODO */
+            gnrc_ndp_rtr_sol_handle(iface, pkt, ipv6->data, (ndp_rtr_sol_t *)hdr,
+                                    icmpv6->size);
             break;
+#endif
 
 #ifdef MODULE_GNRC_NDP
         case ICMPV6_RTR_ADV:

diff --git a/sys/net/gnrc/network_layer/ipv6/gnrc_ipv6.c b/sys/net/gnrc/network_layer/ipv6/gnrc_ipv6.c
@@ -212,6 +212,16 @@ static void *_event_loop(void *args)
                 gnrc_ndp_state_timeout((gnrc_ipv6_nc_t *)msg.content.ptr);
                 break;
 #endif
+#ifdef MODULE_GNRC_NDP_ROUTER
+            case GNRC_NDP_MSG_RTR_ADV_RETRANS:
+                DEBUG("ipv6: Router advertisement retransmission event received\n");
+                gnrc_ndp_router_retrans_rtr_adv((gnrc_ipv6_netif_t *)msg.content.ptr);
+                break;
+            case GNRC_NDP_MSG_RTR_ADV_DELAY:
+                DEBUG("ipv6: Delayed router advertisement event received\n");
+                gnrc_ndp_router_send_rtr_adv((gnrc_ipv6_nc_t *)msg.content.ptr);
+                break;
+#endif
 #ifdef MODULE_GNRC_NDP_HOST
             case GNRC_NDP_MSG_RTR_SOL_RETRANS:
                 DEBUG("ipv6: Router solicitation retransmission event received\n");

diff --git a/sys/net/gnrc/network_layer/ipv6/netif/gnrc_ipv6_netif.c b/sys/net/gnrc/network_layer/ipv6/netif/gnrc_ipv6_netif.c
@@ -101,6 +101,18 @@ static ipv6_addr_t *_add_addr_to_entry(gnrc_ipv6_netif_t *entry, const ipv6_addr
 
             _add_addr_to_entry(entry, &ll_addr, 64,
                                flags | GNRC_IPV6_NETIF_ADDR_FLAGS_NDP_ON_LINK);
+#ifdef MODULE_GNRC_NDP_ROUTER
+            /* New prefixes MAY allow the router to retransmit up to
+             * GNRC_NDP_MAX_INIT_RTR_ADV_NUMOF unsolicited RA
+             * (see https://tools.ietf.org/html/rfc4861#section-6.2.4) */
+            if ((entry->flags & GNRC_IPV6_NETIF_FLAGS_ROUTER) &&
+                (entry->flags & GNRC_IPV6_NETIF_FLAGS_RTR_ADV)) {
+                entry->rtr_adv_count = GNRC_NDP_MAX_INIT_RTR_ADV_NUMOF;
+                mutex_unlock(&entry->mutex);    /* function below relocks mutex */
+                gnrc_ndp_router_retrans_rtr_adv(entry);
+                mutex_lock(&entry->mutex);      /* relock mutex */
+            }
+#endif
         }
         else {
             tmp_addr->flags |= GNRC_IPV6_NETIF_ADDR_FLAGS_NDP_ON_LINK;
@@ -215,6 +227,18 @@ gnrc_ipv6_netif_t *gnrc_ipv6_netif_get(kernel_pid_t pid)
     return NULL;
 }
 
+#if defined(MODULE_GNRC_NDP_ROUTER)
+void gnrc_ipv6_netif_set_router(gnrc_ipv6_netif_t *netif, bool enable)
+{
+    gnrc_ndp_router_set_router(netif, enable);
+}
+
+void gnrc_ipv6_netif_set_rtr_adv(gnrc_ipv6_netif_t *netif, bool enable)
+{
+    gnrc_ndp_router_set_rtr_adv(netif, enable);
+}
+#endif
+
 ipv6_addr_t *gnrc_ipv6_netif_add_addr(kernel_pid_t pid, const ipv6_addr_t *addr,
                                       uint8_t prefix_len, uint8_t flags)
 {
@@ -245,6 +269,20 @@ static void _remove_addr_from_entry(gnrc_ipv6_netif_t *entry, ipv6_addr_t *addr)
                   ipv6_addr_to_str(addr_str, addr, sizeof(addr_str)), entry->pid);
             ipv6_addr_set_unspecified(&(entry->addrs[i].addr));
             entry->addrs[i].flags = 0;
+#ifdef MODULE_GNRC_NDP_ROUTER
+            /* Removal of prefixes MAY allow the router to retransmit up to
+             * GNRC_NDP_MAX_INIT_RTR_ADV_NUMOF unsolicited RA
+             * (see https://tools.ietf.org/html/rfc4861#section-6.2.4) */
+            if ((entry->flags & GNRC_IPV6_NETIF_FLAGS_ROUTER) &&
+                (entry->flags & GNRC_IPV6_NETIF_FLAGS_RTR_ADV) &&
+                (!ipv6_addr_is_multicast(addr) &&
+                 !ipv6_addr_is_link_local(addr))) {
+                entry->rtr_adv_count = GNRC_NDP_MAX_INIT_RTR_ADV_NUMOF;
+                mutex_unlock(&entry->mutex);    /* function below relocks the mutex */
+                gnrc_ndp_router_retrans_rtr_adv(entry);
+                return;
+            }
+#endif
 
             mutex_unlock(&entry->mutex);
             return;
@@ -763,6 +801,9 @@ void gnrc_ipv6_netif_init_by_dev(void)
         }
 
         mutex_unlock(&ipv6_if->mutex);
+#if (defined(MODULE_GNRC_NDP_ROUTER) || defined(MODULE_GNRC_SIXLOWPAN_ND_ROUTER))
+        gnrc_ipv6_netif_set_router(ipv6_if, true);
+#endif
 #ifdef MODULE_GNRC_NDP_HOST
         /* start periodic router solicitations */
         gnrc_ndp_host_init(ipv6_if);