From 7fcc2ab5d68c927ff310b5ce6321e9c52dc05bd8 Mon Sep 17 00:00:00 2001
From: Martine Lenders <m.lenders@fu-berlin.de>
Date: Tue, 12 Feb 2019 12:06:04 +0100
Subject: [PATCH] gnrc_ipv6_nib: fix iteration conditions for cache-out
---
sys/net/gnrc/network_layer/ipv6/nib/_nib-internal.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/sys/net/gnrc/network_layer/ipv6/nib/_nib-internal.c b/sys/net/gnrc/network_layer/ipv6/nib/_nib-internal.c
index acea7db365..c730fdb825 100644
--- a/sys/net/gnrc/network_layer/ipv6/nib/_nib-internal.c
+++ b/sys/net/gnrc/network_layer/ipv6/nib/_nib-internal.c
@@ -152,7 +152,11 @@ static inline _nib_onl_entry_t *_cache_out_onl_entry(const ipv6_addr_t *addr,
/* no new entry created yet, get next entry in FIFO */
tmp = (_nib_onl_entry_t *)clist_lpop(&_next_removable);
}
- } while ((tmp != first) && (res != NULL));
+ } while ((tmp != first) && (res == NULL));
+ if (res == NULL) {
+ /* we did not find any removable entry => requeue current one */
+ clist_rpush(&_next_removable, (clist_node_t *)tmp);
+ }
return res;
}
--
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