On Wed, Oct 28, 2020 at 10:12 PM Xie He <xie.he.0...@gmail.com> wrote: > > The eth_type_trans function is called when we receive frames carrying > Ethernet frames. This function expects a non-NULL pointer as an argument, > and assigns it directly to skb->dev. > > However, the code handling other types of frames first assigns a pointer > to "dev", and then at the end checks whether the value is NULL, and if it > is not NULL, assigns it to skb->dev. > > The two flows are different. Mixing them in this function makes the code > messy. It's better that we convert the second flow to align with how > eth_type_trans does things. > > So this patch changes the code to: first make sure the pointer is not > NULL, then assign it directly to skb->dev. "dev" is no longer needed until > the end where we use it to update stats.
No need for dev at all then?