Intel E810 and X710 NIC DMA control

Intel E810 and X710 NIC DMA control

[Lombardo, Ed]

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Hi,
I want control the Intel NICs (E810 and X710) DMA to either the hugepage memory on socket 0 or socket 1.  Is there a way to do this in DPDK 24.11?

I have created two mempools, one on socket 0 and one on socket 1.  Now when packets arrive at the NIC receive ports (1 and 2)  I only see mbufs in mempool on the CPU socket where the NIC is located being used to .

Thanks,
Ed

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Re: Intel E810 and X710 NIC DMA control

[Stephen Hemminger]

On Thu, 1 May 2025 19:36:54 +0000
"Lombardo, Ed" <Ed.Lombardo@netscout.com> wrote:

> Hi,
> I want control the Intel NICs (E810 and X710) DMA to either the hugepage memory on socket 0 or socket 1.  Is there a way to do this in DPDK 24.11?
> 
> I have created two mempools, one on socket 0 and one on socket 1.  Now when packets arrive at the NIC receive ports (1 and 2)  I only see mbufs in mempool on the CPU socket where the NIC is located being used to .
> 
> Thanks,
> Ed

The NIC will use the mempool you pass during configuration in 
rte_eth_rx_queue_setup()

You can also get more detailed with rx segment splitting.

RE: Intel E810 and X710 NIC DMA control

[Lombardo, Ed]

Hi Stephen,
Thanks, I will try your suggestion, appreciate your help.

Regards,
Ed

-----Original Message-----
From: Stephen Hemminger <stephen@networkplumber.org> 
Sent: Thursday, May 1, 2025 4:29 PM
To: users@dpdk.org
Subject: Re: Intel E810 and X710 NIC DMA control

External Email: This message originated outside of NETSCOUT. Do not click links or open attachments unless you recognize the sender and know the content is safe.

On Thu, 1 May 2025 19:36:54 +0000
"Lombardo, Ed" <Ed.Lombardo@netscout.com> wrote:

> Hi,
> I want control the Intel NICs (E810 and X710) DMA to either the hugepage memory on socket 0 or socket 1.  Is there a way to do this in DPDK 24.11?
> 
> I have created two mempools, one on socket 0 and one on socket 1.  Now when packets arrive at the NIC receive ports (1 and 2)  I only see mbufs in mempool on the CPU socket where the NIC is located being used to .
> 
> Thanks,
> Ed

The NIC will use the mempool you pass during configuration in 
rte_eth_rx_queue_setup()

You can also get more detailed with rx segment splitting.