On Friday 25 August 2006 11:15, Hayim Shaul wrote: > Hi, > > I have written a module that registers a netfilter hook on > NF_IP_POST_ROUTING (that is , everything that goes out of the machine). > When I look at the skbuff I get the headers (IP/TCP) look fine, but the > data seems to be missing!?! > > The content of the buffer following the end of the TCP header has no > correlation to what is actually being sent over the net. > > I thought it might be fragmanted and I see only one fragment but > skb_shinfo(sb)->frag_list is NULL. > > Can anyone please explain what I am missing? > > AFAIK, you should check skb_shinfo(skb)->nr_frags. You can use skb_copy_bits() to see all the data of an skb. Also, see if the interface has the scatter-gather feature enabled (ethtool -k). tavi -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
