As you'd have to poll SA timestamp counters anyway to check the timestamp, why
not just poll existing SA bytes/packets counters instead to see if some traffic
is going through?
Best
ben
> -----Original Message-----
> From: vpp-dev@lists.fd.io <vpp-dev@lists.fd.io> On Behalf Of Guangming
> Sent: Friday, October 14, 2022 8:37
> To: neale <ne...@graphiant.com>; radu.nicolau <radu.nico...@intel.com>;
> roy.fan.zhang <roy.fan.zh...@intel.com>
> Cc: vpp-dev <vpp-dev@lists.fd.io>
> Subject: [vpp-dev] A question about last used timestamp in ipsec sa
>
>
>
> Hi，Neale , Radu and Fan
> Now the ipsec in VPP did not record the traffic timestamp in sa and
> spd like linux kernel . So we can not Implement the full DPD function In
> IKE control daemon that only send DPD when no traffic .
> What is the good method to add timestamp . This method should be fit to
> both sync node and async mode.
> Use a new timestamp counter or add timestamp in old couter
> ipsec_sa_counters ?
>
> struct xfrm_lifetime_cur {
> __u64 bytes;
> __u64 packets;
> __u64 add_time;
> __u64 use_time;
> };
>
>
> Thanks
> Guangming
> ________________________________
>
> zhangguangm...@baicells.com
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