netdev - Re: [net-next 00/10][pull request] 10GbE Intel Wired LAN Driver Updates 2018-01-23

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Date:   Wed, 24 Jan 2018 08:59:23 -0800
From:   Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To:     David Miller <davem@...emloft.net>
Cc:     Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
        netdev <netdev@...r.kernel.org>, nhorman@...hat.com,
        sassmann@...hat.com, jogreene@...hat.com
Subject: Re: [net-next 00/10][pull request] 10GbE Intel Wired LAN Driver
 Updates 2018-01-23

On Tue, Jan 23, 2018 at 10:20 AM, Jeff Kirsher
<jeffrey.t.kirsher@...el.com> wrote:
> This series contains updates to ixgbe only.
>
> Shannon Nelson provides an implementation of the ipsec hardware offload
> feature for the ixgbe driver for these devices: x540, x550, 82599.
>
> The ixgbe NICs support ipsec offload for 1024 Rx and 1024 Tx Security
> Associations (SAs), using up to 128 inbound IP addresses, and using the
> rfc4106(gcm(aes)) encryption.  This code does not yet support checksum
> offload, or TSO in conjunction with the ipsec offload - those will be
> added in the future.
>
> This code shows improvements in both packet throughput and CPU utilization.
> For example, here are some quicky numbers that show the magnitude of the
> performance gain on a single run of "iperf -c <dest>" with the ipsec
> offload on both ends of a point-to-point connection:
>
>         9.4 Gbps - normal case
>         7.6 Gbps - ipsec with offload
>         343 Mbps - ipsec no offload

Dave, looks like you pulled this in as well, correct?  I did not
receive notification.

> The following are changes since commit c13da21cdb8085f1d9a53463c88a4d3967fe90fd:
>   tun: avoid calling xdp_rxq_info_unreg() twice
> and are available in the git repository at:
>   git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue 10GbE