Hi, Is there anyone familiar with the sk_buff implementation in kernel 2.4.19? I have couple of questions about sk_buff. 1) what does data_len mean? any difference from sk_buff->len It seems that data_len field doesn't exist in 2.2.22, but exists in 2.4.18. I would suppose it relates to skb_shared_info, which doesn't exist in 2.2.22 either. 2) skb_shared_info has member frags and flag_list, what's the relationship between them? I just can't any comments in the source code. thanks rz -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/