}
if (!priv->echo_skb[idx]) {
- struct sock *srcsk = skb->sk;
- if (atomic_read(&skb->users) != 1) {
- struct sk_buff *old_skb = skb;
-
- skb = skb_clone(old_skb, GFP_ATOMIC);
- kfree_skb(old_skb);
- if (!skb)
- return;
- } else
- skb_orphan(skb);
-
- skb->sk = srcsk;
+ skb = can_create_echo_skb(skb);
+ if (!skb)
+ return;
/* make settings for echo to reduce code in irq context */
skb->protocol = htons(ETH_P_CAN);
}
EXPORT_SYMBOL_GPL(alloc_can_skb);
+ struct sk_buff *alloc_canfd_skb(struct net_device *dev,
+ struct canfd_frame **cfd)
+ {
+ struct sk_buff *skb;
+
+ skb = netdev_alloc_skb(dev, sizeof(struct can_skb_priv) +
+ sizeof(struct canfd_frame));
+ if (unlikely(!skb))
+ return NULL;
+
+ skb->protocol = htons(ETH_P_CANFD);
+ skb->pkt_type = PACKET_BROADCAST;
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+
+ can_skb_reserve(skb);
+ can_skb_prv(skb)->ifindex = dev->ifindex;
+
+ *cfd = (struct canfd_frame *)skb_put(skb, sizeof(struct canfd_frame));
+ memset(*cfd, 0, sizeof(struct canfd_frame));
+
+ return skb;
+ }
+ EXPORT_SYMBOL_GPL(alloc_canfd_skb);
+
struct sk_buff *alloc_can_err_skb(struct net_device *dev, struct can_frame **cf)
{
struct sk_buff *skb;