On Wed, Nov 28, 2018 at 10:49:31AM -0800, David Miller wrote:
> From: Pan Bian <bianpan2...@163.com>
> Date: Wed, 28 Nov 2018 16:09:45 +0800
>
> If either of these two cases are executed, it means that it must be
> the case that:
>
> !last || context_next
>
> is FALSE, therefore the conditional in the tail code of this function:
>
> /* Check if we need to save state before leaving */
> if (received && (!last || context_next)) {
> rdata = XGBE_GET_DESC_DATA(ring, ring->cur);
> rdata->state_saved = 1;
> rdata->state.skb = skb;
> rdata->state.len = len;
> rdata->state.error = error;
> }
>
> will not trigger, and therefore we will not record the free'd SKB.
>
> And if we iterate the loop again, it is guaranteed that 'skb' will
> be set to a new packet or NULL.
>
> So there is no problem here.
Got it. Sorry for my misunderstanding. Thank you and Tom for the
detailed explanations.
Pan
