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authorAlexander Aring <alex.aring@gmail.com>2015-08-15 11:00:33 +0200
committerMarcel Holtmann <marcel@holtmann.org>2015-08-15 23:28:09 +0200
commitc0015bf3a34961342a27b021672049e535ab36a1 (patch)
treeaf1084cdfcdd4eb5d417ba46f73088c87069050e /net/ieee802154
parent0751272880f3a0c74c786ecfaba2b3d98748482f (diff)
downloadlinux-c0015bf3a34961342a27b021672049e535ab36a1.tar.bz2
ieee802154: 6lowpan: fix non-lowpan wpan interfaces
We receive all 802.15.4 frames on the packet handler "lowpan_rcv" this patch checks if the wpan device belongs to a lowpan interface. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net/ieee802154')
-rw-r--r--net/ieee802154/6lowpan/rx.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/net/ieee802154/6lowpan/rx.c b/net/ieee802154/6lowpan/rx.c
index d6f5e8ee6fda..12e10201d263 100644
--- a/net/ieee802154/6lowpan/rx.c
+++ b/net/ieee802154/6lowpan/rx.c
@@ -67,6 +67,10 @@ static int lowpan_rcv(struct sk_buff *skb, struct net_device *dev,
struct ieee802154_hdr hdr;
int ret;
+ if (dev->type != ARPHRD_IEEE802154 ||
+ !dev->ieee802154_ptr->lowpan_dev)
+ goto drop;
+
skb = skb_share_check(skb, GFP_ATOMIC);
if (!skb)
goto drop;
@@ -77,9 +81,6 @@ static int lowpan_rcv(struct sk_buff *skb, struct net_device *dev,
if (skb->pkt_type == PACKET_OTHERHOST)
goto drop_skb;
- if (dev->type != ARPHRD_IEEE802154)
- goto drop_skb;
-
if (ieee802154_hdr_peek_addrs(skb, &hdr) < 0)
goto drop_skb;