* @skb: pointer to socket buffer with CAN frame in data section
* @loop: loopback for listeners on local CAN sockets (recommended default!)
*
+ * Due to the loopback this routine must not be called from hardirq context.
+ *
* Return:
* 0 on success
* -ENETDOWN when the selected interface is down
}
if (newskb)
- netif_rx(newskb);
+ netif_rx_ni(newskb);
/* update statistics */
can_stats.tx_frames++;
struct can_frame *cf = (struct can_frame *)skb->data;
int matches;
- if (dev->type != ARPHRD_CAN || !net_eq(dev_net(dev), &init_net)) {
- kfree_skb(skb);
- return 0;
- }
+ if (!net_eq(dev_net(dev), &init_net))
+ goto drop;
- BUG_ON(skb->len != sizeof(struct can_frame) || cf->can_dlc > 8);
+ if (WARN_ONCE(dev->type != ARPHRD_CAN ||
+ skb->len != sizeof(struct can_frame) ||
+ cf->can_dlc > 8,
+ "PF_CAN: dropped non conform skbuf: "
+ "dev type %d, len %d, can_dlc %d\n",
+ dev->type, skb->len, cf->can_dlc))
+ goto drop;
/* update statistics */
can_stats.rx_frames++;
can_stats.matches_delta++;
}
- return 0;
+ return NET_RX_SUCCESS;
+
+drop:
+ kfree_skb(skb);
+ return NET_RX_DROP;
}
/*