Le 14/03/2016 18:57, Mahesh Bandewar a écrit :
On Sun, Mar 13, 2016 at 8:53 PM, David Miller <da...@davemloft.net> wrote:
[snip]
Furthermore, when you walk across the ns boundary, that old device has
to disappear. That's why that is the device assigned to skb->dev.
The layer boundaries are not that well maintained. We do check for the xfrm
policies in L4 and expect the skb->dev pointing to the L3 device. So unless we
have a way to derive a L3 dev from skb->dev, I don't think xfrm will
work. Unless
some Xfrm-expert asserts that this is not needed.
Adding a hook "at the right place" to do the switch is probably the better way.
For xfrm, you will need to handle it in this hook or rearrange things.
I don't think that a quick and easy solution will be possible.
