diff options
Diffstat (limited to 'drivers/net/can/dev.c')
| -rw-r--r-- | drivers/net/can/dev.c | 26 |
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); |