Hi,

Looks like you must enable SPD on an interface eg. with cli ' set interface 
ipsec spd <int> <id>' or API ipsec_interface_add_del_spd.

ben

> -----Original Message-----
> From: [email protected] <[email protected]> On Behalf Of Vijay Kumar
> Sent: mercredi 2 février 2022 11:20
> To: vpp-dev <[email protected]>
> Subject: Re: [vpp-dev] Regarding the ipsec policy based graph node?
> 
> Hi experts,
> 
> 
> I see that when we use VPP for IPSEC VPN, the outbound packets don't pass
> through the ipsec4_output_node(ipsec4_output_feature) graph node before
> the esp_encrypt_inline() graph node.
> 
> I know that VPP doesn't support policy based IPSEC VPN by default.
> How can one enable this feature where we can use the ipsec4_output_node to
> do policy matching?
> 
> 
> Regards,
> Vijay Kumar N
> 
> On Thu, Jan 27, 2022 at 11:20 PM Vijay Kumar <[email protected]
> <mailto:[email protected]> > wrote:
> 
> 
>       Hi all,
> 
>       I am using fdio vpp stack 20.05 and am using the vnet/ipsec that is
> programmed by non-vpp IKEv2 stack. I observe that in the data-path always
> "esp4-decrypt-tun" is hit for inbound packets while "esp-encrypt-tun" is
> hit for all outbound packets.
> 
>       I think these two graph nodes are hit because we create a ipip
> tunnel interface for the IPSEC and register the rx_db and tx_db at the SA
> creation time.
> 
>       I would like to use the SPD matching logic written in the graph node
> ipsec4_output_node/ipsec4_output_feature()?
> 
>       How to enable the outbound packet to pass through this function?
> 
> 
>       Regards.

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