Re: [vpp-dev] Query on Feature arc for tapping all IP packets after reassembly
Thanks a lot Matt for the quick inputs. We are interested in packets destined for our interfaces only. Hence, I will try with ip4-local. -- Thanks & Regards, Murthy -=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#17215): https://lists.fd.io/g/vpp-dev/message/17215 Mute This Topic: https://lists.fd.io/mt/76144894/21656 Group Owner: vpp-dev+ow...@lists.fd.io Unsubscribe: https://lists.fd.io/g/vpp-dev/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
Re: [vpp-dev] Query on Feature arc for tapping all IP packets after reassembly
Hi Satya,
A node on ip4-local will process packets which have a destination IPv4
address that is local to VPP. Usually these are addresses configured on a
VPP interface but they can also be addresses in a NAT pool or any other
address which has a local path in the FIB. If those are the only packets
you want your node to process, then ip4-local should work. Otherwise, if
you want to process packets which VPP will forward elsewhere, you might
want to use the ip4-unicast arc and set runs_after to
"ip4-full-reassembly-feature".
-Matt
On Wed, Aug 12, 2020 at 6:16 AM Satya Murthy
wrote:
> Hi,
>
> We have a query on one of the requirements we have.
>
> 1. We would like to tap all the ip4 packets into our custom graph node.
> 2. But, we want to tap the ip packets only after reassembly is completed,
> if fragments are received.
>
> I was looking at ip-local feature arc, if this works for our requirement
> or not. But, I am not 100% sure, if the reassembly restriction will be met
> by registering our feature in ip4-local feature arc as below.
>
> VNET_FEATURE_INIT (our_custom_feature, static) =
> {
> .arc_name = "ip4-local",
> .node_name = "our-custom-node",
> .runs_before = VNET_FEATURES("ip4-local-end-of-arc"),
> };
>
> If this does not work, can you please let us know any pointers on how to
> achieve this.
>
> Thanks & Regards,
> Murthy
>
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[vpp-dev] Query on Feature arc for tapping all IP packets after reassembly
Hi,
We have a query on one of the requirements we have.
1. We would like to tap all the ip4 packets into our custom graph node.
2. But, we want to tap the ip packets only after reassembly is completed, if
fragments are received.
I was looking at ip-local feature arc, if this works for our requirement or
not. But, I am not 100% sure, if the reassembly restriction will be met by
registering our feature in ip4-local feature arc as below.
VNET_FEATURE_INIT (our_custom_feature, static) =
{
.arc_name = "ip4-local",
.node_name = "our-custom-node",
.runs_before = VNET_FEATURES("ip4-local-end-of-arc"),
};
If this does not work, can you please let us know any pointers on how to
achieve this.
Thanks & Regards,
Murthy
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