Scrub an skb
void skb_scrub_packet(struct sk_buff * skb, bool xnet);
skb
buffer to clean
xnet
packet is crossing netns
skb_scrub_packet can be used after encapsulating or decapsulting a packet into/from a tunnel. Some information have to be cleared during these operations. skb_scrub_packet can also be used to clean a skb before injecting it in another namespace (xnet == true). We have to clear all information in the skb that could impact namespace isolation.