On 1/20/20 9:10 PM, Matt Cover wrote:
On Mon, Jan 20, 2020 at 11:11 AM Matt Cover <werekraken@xxxxxxxxx> wrote:
On Sat, Jan 18, 2020 at 8:05 PM John Fastabend <john.fastabend@xxxxxxxxx> wrote:
Matthew Cover wrote:
Allow looking up an nf_conn. This allows eBPF programs to leverage
nf_conntrack state for similar purposes to socket state use cases,
as provided by the socket lookup helpers. This is particularly
useful when nf_conntrack state is locally available, but socket
state is not.
Signed-off-by: Matthew Cover <matthew.cover@xxxxxxxxxxxxx>
---
Couple coding comments below. Also looks like a couple build errors
so fix those up. I'm still thinking over this though.
Thank you for taking the time to look this over. I will be looking
into the build issues.
Looks like I missed static inline on a couple functions when
nf_conntrack isn't builtin. I'll include the fix in v2.
One of the big issues I'd see with this integration is that literally no-one
will be able to use it unless they manually recompile their distro kernel with
ct as builtin instead of module .. Have you considered writing a tcp/udp ct in
plain bpf? Perhaps would make sense to have some sort of tools/lib/bpf/util/
with bpf prog library code that can be included.
