SKB_EXT_MPTCP
if (!skb_ext_exist(from, SKB_EXT_MPTCP))
from_ext = skb_ext_find(from, SKB_EXT_MPTCP);
return mptcp_ext_matches(skb_ext_find(to, SKB_EXT_MPTCP),
skb_ext_find(from, SKB_EXT_MPTCP));
if (skb_ext_exist(skb, SKB_EXT_MPTCP))
[SKB_EXT_MPTCP] = SKB_EXT_CHUNKSIZEOF(struct mptcp_ext),
mpext = skb_ext_add(skb, SKB_EXT_MPTCP);
__skb_ext_set(skb, SKB_EXT_MPTCP, mpext);
return (struct mptcp_ext *)skb_ext_find(skb, SKB_EXT_MPTCP);
skb_ext_del(skb, SKB_EXT_MPTCP);
skb_ext_del(skb, SKB_EXT_MPTCP);
skb_ext_del(skb, SKB_EXT_MPTCP);
struct mptcp_ext *mpext = skb_ext_add(skb, SKB_EXT_MPTCP);