On 6/4/21 2:42 AM, Ilias Apalodimas wrote: > [...] >>> + /* Driver set this to memory recycling info. Reset it on recycle. >>> + * This will *not* work for NIC using a split-page memory model. >>> + * The page will be returned to the pool here regardless of the >>> + * 'flipped' fragment being in use or not. >>> + */ >> >> I am not sure I understand how does the last part of comment related >> to the code below, as there is no driver using split-page memory model >> will reach here because those driver will not call skb_mark_for_recycle(), >> right? >> > > Yes the comment is there to prohibit people (mlx5 only actually) to add the > recycling bit on their driver. Because if they do it will *probably* work > but they might get random corrupted packets which will be hard to debug. > What's the complexity for getting it to work with split page model? Since 1500 is the default MTU, requiring a page per packet means a lot of wasted memory.
