linux-kernel - Re: [PATCH net-next v3 0/4] bonding: initial support for hardware crypto offload

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Date:   Mon, 22 Jun 2020 15:39:13 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     jarod@...hat.com
Cc:     linux-kernel@...r.kernel.org, j.vosburgh@...il.com,
        vfalico@...il.com, andy@...yhouse.net, jeffrey.t.kirsher@...el.com,
        kuba@...nel.org, steffen.klassert@...unet.com,
        herbert@...dor.apana.org.au, netdev@...r.kernel.org,
        intel-wired-lan@...ts.osuosl.org
Subject: Re: [PATCH net-next v3 0/4] bonding: initial support for hardware
 crypto offload

From: Jarod Wilson <jarod@...hat.com>
Date: Fri, 19 Jun 2020 10:31:51 -0400

> This is an initial functional implementation for doing pass-through of
> hardware encryption from bonding device to capable slaves, in active-backup
> bond setups. This was developed and tested using ixgbe-driven Intel x520
> interfaces with libreswan and a transport mode connection, primarily using
> netperf, with assorted connection failures forced during transmission. The
> failover works quite well in my testing, and overall performance is right
> on par with offload when running on a bare interface, no bond involved.
> 
> Caveats: this is ONLY enabled for active-backup, because I'm not sure
> how one would manage multiple offload handles for different devices all
> running at the same time in the same xfrm, and it relies on some minor
> changes to both the xfrm code and slave device driver code to get things
> to behave, and I don't have immediate access to any other hardware that
> could function similarly, but the NIC driver changes are minimal and
> straight-forward enough that I've included what I think ought to be
> enough for mlx5 devices too.
> 
> v2: reordered patches, switched (back) to using CONFIG_XFRM_OFFLOAD
> to wrap the code additions and wrapped overlooked additions.
> v3: rebase w/net-next open, add proper cc list to cover letter

Series applied, thanks.