On Mon, 12 Oct 2020 16:17:21 -0700 Cong Wang wrote:
> GRE tunnel has its own header_ops, ipgre_header_ops, and sets it
> conditionally. When it is set, it assumes the outer IP header is
> already created before ipgre_xmit().
>
> This is not true when we send packets through a raw packet socket,
>
On Mon, Oct 12, 2020 at 4:17 PM Cong Wang wrote:
>
> GRE tunnel has its own header_ops, ipgre_header_ops, and sets it
> conditionally. When it is set, it assumes the outer IP header is
> already created before ipgre_xmit().
>
> This is not true when we send packets through a raw packet socket,
> w
On Mon, Oct 12, 2020 at 4:17 PM Cong Wang wrote:
>
> Note, there are some other suspicious use of dev->hard_header_len in
> the same file, but let's leave them to a separate patch if really
> needed.
I looked at the file (before this patch). There are 4 occurrences of
hard_header_len, but they ar
GRE tunnel has its own header_ops, ipgre_header_ops, and sets it
conditionally. When it is set, it assumes the outer IP header is
already created before ipgre_xmit().
This is not true when we send packets through a raw packet socket,
where L2 headers are supposed to be constructed by user. Packet
