Hello everybody,

I use linux since 5 years, i have a LPIC certification, but i had never modification to the kernel code

Now i have to do that, but, i am very confused, with a lot of documentations, a lot book, but i can't find a document that summarize the importants thinks

for example, i try to understand what did the ip_hdr() and udp_hdr() do?

what are the list of skb_buff fields and explanation? in every layer (L2,L3,L4) , what are the header fields? and explnations? nothing to summarize all this thinks?

i will be glad if i have help, what are the skb_buff field exactly in every layer?

Thank you a lot for your help