2016-05-05 14:13 GMT+03:00 Edward Cree <ec...@solarflare.com>: > On 05/05/16 08:40, Ilya Matveychikov wrote: > > Is there any docs except the kernel sources itself to refer to?
> davem has some docs up at http://vger.kernel.org/~davem/skb.html and > http://vger.kernel.org/~davem/skb_data.html > In particular note the following: > "The frag_list is used to maintain a chain of SKBs organized for > fragmentation purposes, it is _not_ used for maintaining paged data." > So my reading would suggest there is no way to multiple-layer-fragment > an SKB; the frags are page pointers and offsets, not entire sk_buff > structs in their own right. > Seems that the docs is slightly outdated. I think the structure of SKB does not impose any restrictions on the nesting of the fragments. But is there any of them in the kernel's code?
