net/gnrc/rpl: add hooks for nimble_rpble

sys/include/net/gnrc/rpl/rpble.h

@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2021 Freie Universität Berlin
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @ingroup     net_gnrc_rpl
+ * @{
+ *
+ * @file
+ * @brief       Glue code linking RPL with the NimBLE rpble connection manager
+ *
+ * @author      Hauke Petersen <hauke.petersen@fu-berlin.de>
+ */
+
+#ifndef NET_GNRC_RPL_RPBLE_H
+#define NET_GNRC_RPL_RPBLE_H
+
+#include <string.h>
+#if IS_USED(MODULE_NIMBLE_RPBLE)
+#include "nimble_rpble.h"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if IS_USED(MODULE_NIMBLE_RPBLE)
+static inline void gnrc_rpl_rpble_update(const gnrc_rpl_dodag_t *dodag)
+{
+    nimble_rpble_ctx_t ctx;
+    ctx.inst_id = dodag->instance->id;
+    memcpy(ctx.dodag_id, &dodag->dodag_id, 16);
+    ctx.version = dodag->version;
+    ctx.rank = dodag->my_rank;
+    ctx.role = dodag->node_status;
+    nimble_rpble_update(&ctx);
+}
+#else
+static inline void gnrc_rpl_rpble_update(const gnrc_rpl_dodag_t *dodag)
+{
+    (void)dodag;
+    /* do nothing here */
+}
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* NET_GNRC_RPL_RPBLE_H */
+/** @} */

sys/net/gnrc/routing/rpl/gnrc_rpl.c

@@ -35,6 +35,7 @@
 #include "gnrc_rpl_internal/globals.h"
 
 #include "net/gnrc/rpl.h"
+#include "net/gnrc/rpl/rpble.h"
 #ifdef MODULE_GNRC_RPL_P2P
 #include "net/gnrc/rpl/p2p.h"
 #include "net/gnrc/rpl/p2p_dodag.h"
@@ -165,6 +166,7 @@ gnrc_rpl_instance_t *gnrc_rpl_root_init(uint8_t instance_id, const ipv6_addr_t *
     trickle_start(gnrc_rpl_pid, &dodag->trickle, GNRC_RPL_MSG_TYPE_TRICKLE_MSG,
                   (1 << dodag->dio_min), dodag->dio_interval_doubl,
                   dodag->dio_redun);
+    gnrc_rpl_rpble_update(dodag);
 
     return inst;
 }

sys/net/gnrc/routing/rpl/gnrc_rpl_dodag.c

@@ -29,6 +29,7 @@
 #include "utlist.h"
 
 #include "net/gnrc/rpl.h"
+#include "net/gnrc/rpl/rpble.h"
 #ifdef MODULE_GNRC_RPL_P2P
 #include "net/gnrc/rpl/p2p.h"
 #include "net/gnrc/rpl/p2p_dodag.h"
@@ -359,6 +360,7 @@ static gnrc_rpl_parent_t *_gnrc_rpl_find_preferred_parent(gnrc_rpl_dodag_t *doda
     dodag->my_rank = dodag->instance->of->calc_rank(dodag, 0);
     if (dodag->my_rank != old_rank) {
         trickle_reset_timer(&dodag->trickle);
+        gnrc_rpl_rpble_update(dodag);
     }
 
     LL_FOREACH_SAFE(dodag->parents, elt, tmp) {