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authorAlexander Aring <alex.aring@gmail.com>2014-11-09 08:36:58 +0100
committerMarcel Holtmann <marcel@holtmann.org>2014-11-09 19:50:29 +0100
commit87023e1058c9ead2314c27761991816b48f949ef (patch)
tree0513166fcb65ae3c2a72f80e6b61f5b446b1ce22 /net/ieee802154
parent7bea1ea7b4c16af7c9263648e10f7edc88e5fc21 (diff)
ieee802154: fix iface dump with lowpan
This patch adds a hacked solution for an interface dump with a running lowpan interface. This will crash because lowpan and wpan interface use the same arphdr. To change the arphdr will change the UAPI, this patch checks on mtu which should on lowpan interface always different than IEEE802154_MTU. 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/nl-mac.c17
1 files changed, 14 insertions, 3 deletions
diff --git a/net/ieee802154/nl-mac.c b/net/ieee802154/nl-mac.c
index 50e9863823a5..fe77f0c770b8 100644
--- a/net/ieee802154/nl-mac.c
+++ b/net/ieee802154/nl-mac.c
@@ -166,7 +166,10 @@ static struct net_device *ieee802154_nl_get_dev(struct genl_info *info)
if (!dev)
return NULL;
- if (dev->type != ARPHRD_IEEE802154) {
+ /* Check on mtu is currently a hacked solution because lowpan
+ * and wpan have the same ARPHRD type.
+ */
+ if (dev->type != ARPHRD_IEEE802154 || dev->mtu != IEEE802154_MTU) {
dev_put(dev);
return NULL;
}
@@ -448,7 +451,11 @@ int ieee802154_dump_iface(struct sk_buff *skb, struct netlink_callback *cb)
idx = 0;
for_each_netdev(net, dev) {
- if (idx < s_idx || (dev->type != ARPHRD_IEEE802154))
+ /* Check on mtu is currently a hacked solution because lowpan
+ * and wpan have the same ARPHRD type.
+ */
+ if (idx < s_idx || dev->type != ARPHRD_IEEE802154 ||
+ dev->mtu != IEEE802154_MTU)
goto cont;
if (ieee802154_nl_fill_iface(skb, NETLINK_CB(cb->skb).portid,
@@ -782,7 +789,11 @@ ieee802154_llsec_dump_table(struct sk_buff *skb, struct netlink_callback *cb,
int rc;
for_each_netdev(net, dev) {
- if (idx < first_dev || dev->type != ARPHRD_IEEE802154)
+ /* Check on mtu is currently a hacked solution because lowpan
+ * and wpan have the same ARPHRD type.
+ */
+ if (idx < first_dev || dev->type != ARPHRD_IEEE802154 ||
+ dev->mtu != IEEE802154_MTU)
goto skip;
data.ops = ieee802154_mlme_ops(dev);

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