BLOG_SKB_CB
BLOG_SKB_CB(skb)->backlog_rcv = fn;
BLOG_SKB_CB(skb)->backlog_rcv(sk, skb);
cdev = BLOG_SKB_CB(skb)->cdev;
BLOG_SKB_CB(skb)->cdev = cdev;
add_pass_open_to_parent(child, lsk, BLOG_SKB_CB(skb)->cdev);
BLOG_SKB_CB(skb)->cdev = cdev;
BLOG_SKB_CB(skb)->backlog_rcv =
chtls_send_abort_rpl(child, skb, BLOG_SKB_CB(skb)->cdev,
BLOG_SKB_CB(skb)->backlog_rcv = bl_abort_syn_rcv;
chtls_send_abort_rpl(sk, skb, BLOG_SKB_CB(skb)->cdev,
BLOG_SKB_CB(skb)->cdev = csk->cdev;
BLOG_SKB_CB(skb)->backlog_rcv = bl_pass_open_abort;
BLOG_SKB_CB(skb)->backlog_rcv(sk, skb);