Hi Kunal, 

Yes, it might be worth looking into ip and tcp csum offloads. 

But given that mtu ~ 9kB, maybe look into forcing tcp to build jumbo frames, 
i.e., tcp { mtu 9000 } in startup.conf. It’ll be needed on both ends and I’m 
assuming here network between your two vpp instances supports 9k mtu. 

Regards,
Florin 

> On Mar 30, 2022, at 12:46 PM, Kunal Parikh <ku...@techthumb.in> wrote:
> 
> Hi Florin
> 
> Following is the output from
> vppctl show hardware-interfaces
>  
>               Name                Idx   Link  Hardware
> local0                             0    down  local0
>   Link speed: unknown
>   local
> vpp0                               1     up   vpp0
>   Link speed: unknown
>   RX Queues:
>     queue thread         mode
>     0     vpp_wk_0 (1)   polling
>   Ethernet address 0e:ca:6b:19:5b:95
>   AWS ENA VF
>     carrier up full duplex max-frame-size 9026
>     flags: admin-up maybe-multiseg rx-ip4-cksum
>     Devargs:
>     rx: queues 1 (max 8), desc 256 (min 128 max 2048 align 1)
>     tx: queues 2 (max 8), desc 256 (min 128 max 1024 align 1)
>     pci: device 1d0f:ec20 subsystem 0000:0000 address 0000:00:06.00 numa 0
>     max rx packet len: 9234
>     promiscuous: unicast off all-multicast off
>     vlan offload: strip off filter off qinq off
>     rx offload avail:  ipv4-cksum udp-cksum tcp-cksum scatter
>     rx offload active: ipv4-cksum scatter
>     tx offload avail:  ipv4-cksum udp-cksum tcp-cksum multi-segs
>     tx offload active: multi-segs
>     rss avail:         ipv4-tcp ipv4-udp ipv6-tcp ipv6-udp
>     rss active:        none
>     tx burst function: (not available)
>     rx burst function: (not available)
> 
> Should my goal be to move items in the "avail" list to the "active" list?
>  
> 
> 
> 

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