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path: root/drivers/net/wan/hdlc.c
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Diffstat (limited to 'drivers/net/wan/hdlc.c')
-rw-r--r--drivers/net/wan/hdlc.c20
1 files changed, 14 insertions, 6 deletions
diff --git a/drivers/net/wan/hdlc.c b/drivers/net/wan/hdlc.c
index 65ad2e2..d553e6f 100644
--- a/drivers/net/wan/hdlc.c
+++ b/drivers/net/wan/hdlc.c
@@ -36,6 +36,7 @@
#include <linux/rtnetlink.h>
#include <linux/notifier.h>
#include <linux/hdlc.h>
+#include <net/net_namespace.h>
static const char* version = "HDLC support module revision 1.21";
@@ -66,6 +67,12 @@ static int hdlc_rcv(struct sk_buff *skb, struct net_device *dev,
struct packet_type *p, struct net_device *orig_dev)
{
struct hdlc_device_desc *desc = dev_to_desc(dev);
+
+ if (dev->nd_net != &init_net) {
+ kfree_skb(skb);
+ return 0;
+ }
+
if (desc->netif_rx)
return desc->netif_rx(skb);
@@ -102,6 +109,9 @@ static int hdlc_device_event(struct notifier_block *this, unsigned long event,
unsigned long flags;
int on;
+ if (dev->nd_net != &init_net)
+ return NOTIFY_DONE;
+
if (dev->get_stats != hdlc_get_stats)
return NOTIFY_DONE; /* not an HDLC device */
@@ -222,6 +232,8 @@ int hdlc_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
return -EINVAL;
}
+static const struct header_ops hdlc_null_ops;
+
static void hdlc_setup_dev(struct net_device *dev)
{
/* Re-init all variables changed by HDLC protocol drivers,
@@ -233,13 +245,9 @@ static void hdlc_setup_dev(struct net_device *dev)
dev->type = ARPHRD_RAWHDLC;
dev->hard_header_len = 16;
dev->addr_len = 0;
- dev->hard_header = NULL;
- dev->rebuild_header = NULL;
- dev->set_mac_address = NULL;
- dev->hard_header_cache = NULL;
- dev->header_cache_update = NULL;
+ dev->header_ops = &hdlc_null_ops;
+
dev->change_mtu = hdlc_change_mtu;
- dev->hard_header_parse = NULL;
}
static void hdlc_setup(struct net_device *dev)
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