From eae0e4c724df65d33f45696ba74dc2c791b07f12 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Cenk=20G=C3=BCndo=C4=9Fan?= <cnkgndgn@gmail.com>
Date: Wed, 23 Mar 2016 11:17:37 +0100
Subject: [PATCH] gnrc_rpl: new default route when old one was deleted
---
sys/net/gnrc/routing/rpl/gnrc_rpl_dodag.c | 22 ++++++++++++++++++++--
1 file changed, 20 insertions(+), 2 deletions(-)
diff --git a/sys/net/gnrc/routing/rpl/gnrc_rpl_dodag.c b/sys/net/gnrc/routing/rpl/gnrc_rpl_dodag.c
index f827659e4c..43be9ee63f 100644
--- a/sys/net/gnrc/routing/rpl/gnrc_rpl_dodag.c
+++ b/sys/net/gnrc/routing/rpl/gnrc_rpl_dodag.c
@@ -192,12 +192,30 @@ bool gnrc_rpl_parent_add_by_addr(gnrc_rpl_dodag_t *dodag, ipv6_addr_t *addr,
bool gnrc_rpl_parent_remove(gnrc_rpl_parent_t *parent)
{
- if (parent == parent->dodag->parents) {
+ assert(parent != NULL);
+
+ gnrc_rpl_dodag_t *dodag = parent->dodag;
+
+ if (parent == dodag->parents) {
fib_remove_entry(&gnrc_ipv6_fib_table,
(uint8_t *) ipv6_addr_unspecified.u8,
sizeof(ipv6_addr_t));
+
+ /* set the default route to the next parent for now */
+ if (parent->next) {
+ uint32_t now = xtimer_now() / SEC_IN_USEC;
+ fib_add_entry(&gnrc_ipv6_fib_table,
+ dodag->iface,
+ (uint8_t *) ipv6_addr_unspecified.u8,
+ sizeof(ipv6_addr_t),
+ FIB_FLAG_NET_PREFIX,
+ parent->next->addr.u8,
+ sizeof(ipv6_addr_t),
+ FIB_FLAG_RPL_ROUTE,
+ (parent->next->lifetime - now) * SEC_IN_MS);
+ }
}
- LL_DELETE(parent->dodag->parents, parent);
+ LL_DELETE(dodag->parents, parent);
memset(parent, 0, sizeof(gnrc_rpl_parent_t));
return true;
}
--
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