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authorAlexander Aring2016-07-06 23:32:28 +0200
committerMarcel Holtmann2016-07-08 13:23:12 +0200
commit9e262f5037b95a9ccc508debec2715e70559cc81 (patch)
treee7625467a4a6f7fe4da5e77dffd1054de1adc642
parentieee802154: fix skb get fc on big endian (diff)
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6lowpan: ndisc: set invalid unicast short addr to unspec
When receiving neighbour information with short address option field we should check the complete range of invalid short addresses and set it to one invalid address setting which is the unspecified address. This address is also used when by creating at first a new neighbour entry to indicate no short address is set. Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
-rw-r--r--net/6lowpan/ndisc.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/net/6lowpan/ndisc.c b/net/6lowpan/ndisc.c
index 79c5fa9665fc..86450b7e2899 100644
--- a/net/6lowpan/ndisc.c
+++ b/net/6lowpan/ndisc.c
@@ -97,10 +97,13 @@ static void lowpan_ndisc_802154_update(struct neighbour *n, u32 flags,
}
write_lock_bh(&n->lock);
- if (lladdr_short)
+ if (lladdr_short) {
ieee802154_be16_to_le16(&neigh->short_addr, lladdr_short);
- else
+ if (!lowpan_802154_is_valid_src_short_addr(neigh->short_addr))
+ neigh->short_addr = cpu_to_le16(IEEE802154_ADDR_SHORT_UNSPEC);
+ } else {
neigh->short_addr = cpu_to_le16(IEEE802154_ADDR_SHORT_UNSPEC);
+ }
write_unlock_bh(&n->lock);
}