From ace5db70e858b8c114580e8b4f65a3994ee3c4e7 Mon Sep 17 00:00:00 2001
From: Hauke Petersen <hauke.petersen@fu-berlin.de>
Date: Thu, 22 Nov 2018 15:11:32 +0100
Subject: [PATCH] net/gnrc_netif: opt of _ipv6_get_iid()
---
sys/net/gnrc/netif/gnrc_netif.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/sys/net/gnrc/netif/gnrc_netif.c b/sys/net/gnrc/netif/gnrc_netif.c
index f672ac4205..225663a850 100644
--- a/sys/net/gnrc/netif/gnrc_netif.c
+++ b/sys/net/gnrc/netif/gnrc_netif.c
@@ -826,6 +826,14 @@ int gnrc_netif_ipv6_get_iid(gnrc_netif_t *netif, eui64_t *eui64)
{
#if GNRC_NETIF_L2ADDR_MAXLEN > 0
if (netif->flags & GNRC_NETIF_FLAGS_HAS_L2ADDR) {
+ /* the device driver abstraction should be able to provide us with the
+ * IPV6_IID, so we try this first */
+ int res = netif->dev->driver->get(netif->dev, NETOPT_IPV6_IID,
+ eui64, sizeof(eui64_t));
+ if (res == sizeof(eui64_t)) {
+ return 0;
+ }
+
switch (netif->device_type) {
#ifdef MODULE_NETDEV_ETH
case NETDEV_TYPE_ETHERNET:
@@ -887,7 +895,8 @@ int gnrc_netif_ipv6_get_iid(gnrc_netif_t *netif, eui64_t *eui64)
break;
}
}
-#endif
+#endif /* GNRC_NETIF_L2ADDR_MAXLEN > 0 */
+
return -ENOTSUP;
}
--
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