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path: root/drivers/net/can/dev.c
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Diffstat (limited to 'drivers/net/can/dev.c')
-rw-r--r--drivers/net/can/dev.c26
1 files changed, 25 insertions, 1 deletions
diff --git a/drivers/net/can/dev.c b/drivers/net/can/dev.c
index 8233e5ed2939..f9cba4123c66 100644
--- a/drivers/net/can/dev.c
+++ b/drivers/net/can/dev.c
@@ -24,7 +24,9 @@
#include <linux/if_arp.h>
#include <linux/can.h>
#include <linux/can/dev.h>
+#include <linux/can/skb.h>
#include <linux/can/netlink.h>
+#include <linux/can/led.h>
#include <net/rtnetlink.h>
#define MOD_DESC "CAN device driver interface"
@@ -501,13 +503,18 @@ struct sk_buff *alloc_can_skb(struct net_device *dev, struct can_frame **cf)
{
struct sk_buff *skb;
- skb = netdev_alloc_skb(dev, sizeof(struct can_frame));
+ skb = netdev_alloc_skb(dev, sizeof(struct can_skb_priv) +
+ sizeof(struct can_frame));
if (unlikely(!skb))
return NULL;
skb->protocol = htons(ETH_P_CAN);
skb->pkt_type = PACKET_BROADCAST;
skb->ip_summed = CHECKSUM_UNNECESSARY;
+
+ can_skb_reserve(skb);
+ can_skb_prv(skb)->ifindex = dev->ifindex;
+
*cf = (struct can_frame *)skb_put(skb, sizeof(struct can_frame));
memset(*cf, 0, sizeof(struct can_frame));
@@ -794,10 +801,25 @@ void unregister_candev(struct net_device *dev)
}
EXPORT_SYMBOL_GPL(unregister_candev);
+/*
+ * Test if a network device is a candev based device
+ * and return the can_priv* if so.
+ */
+struct can_priv *safe_candev_priv(struct net_device *dev)
+{
+ if ((dev->type != ARPHRD_CAN) || (dev->rtnl_link_ops != &can_link_ops))
+ return NULL;
+
+ return netdev_priv(dev);
+}
+EXPORT_SYMBOL_GPL(safe_candev_priv);
+
static __init int can_dev_init(void)
{
int err;
+ can_led_notifier_init();
+
err = rtnl_link_register(&can_link_ops);
if (!err)
printk(KERN_INFO MOD_DESC "\n");
@@ -809,6 +831,8 @@ module_init(can_dev_init);
static __exit void can_dev_exit(void)
{
rtnl_link_unregister(&can_link_ops);
+
+ can_led_notifier_exit();
}
module_exit(can_dev_exit);