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DEV_FORWARD_SKB(9) Network device support DEV_FORWARD_SKB(9)

NAME

dev_forward_skb - loopback an skb to another netif

SYNOPSIS

int dev_forward_skb(struct net_device * dev, struct sk_buff * skb);

ARGUMENTS

dev
destination network device
skb
buffer to forward

RETURN VALUES

NET_RX_SUCCESS (no congestion) NET_RX_DROP (packet was dropped, but freed)
dev_forward_skb can be used for injecting an skb from the start_xmit function of one device into the receive queue of another device.
The receiving device may be in another namespace, so we have to clear all information in the skb that could impact namespace isolation.

COPYRIGHT

May 2018 Kernel Hackers Manual 3.16