hello, how to interpret following C statement? #define TCP_SKB_CB(__skb) ((struct tcp_skb_cb *)&((__skb)->cb[0])) what is use of tcp_skb_cb structure in kernel source tcp.h? how TCP_SKB_CB(skb) is translated in its definition? regards, linux_lover __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html