From: Jakub Kicinski <jakub.kicinski@netronome.com>
To: Haiyang Zhang <haiyangz@microsoft.com>
Cc: "sashal@kernel.org" <sashal@kernel.org>,
"linux-hyperv@vger.kernel.org" <linux-hyperv@vger.kernel.org>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
KY Srinivasan <kys@microsoft.com>,
Stephen Hemminger <sthemmin@microsoft.com>,
"olaf@aepfle.de" <olaf@aepfle.de>, vkuznets <vkuznets@redhat.com>,
"davem@davemloft.net" <davem@davemloft.net>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Mark Bloch <markb@mellanox.com>
Subject: Re: [PATCH net-next, 2/2] hv_netvsc: Sync offloading features to VF NIC
Date: Fri, 6 Sep 2019 21:25:48 -0700 [thread overview]
Message-ID: <20190906212548.685b5f83@cakuba.netronome.com> (raw)
In-Reply-To: <DM6PR21MB13373166435FD2FC5543D349CABB0@DM6PR21MB1337.namprd21.prod.outlook.com>
On Thu, 5 Sep 2019 23:07:32 +0000, Haiyang Zhang wrote:
> > On Fri, 30 Aug 2019 03:45:38 +0000, Haiyang Zhang wrote:
> > > VF NIC may go down then come up during host servicing events. This
> > > causes the VF NIC offloading feature settings to roll back to the
> > > defaults. This patch can synchronize features from synthetic NIC to
> > > the VF NIC during ndo_set_features (ethtool -K), and
> > > netvsc_register_vf when VF comes back after host events.
> > >
> > > Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
> > > Cc: Mark Bloch <markb@mellanox.com>
> >
> > If we want to make this change in behaviour we should change net_failover
> > at the same time.
>
> After checking the net_failover, I found it's for virtio based SRIOV, and very
> different from what we did for Hyper-V based SRIOV.
>
> We let the netvsc driver acts as both the synthetic (PV) driver and the transparent
> bonding master for the VF NIC. But net_failover acts as a master device on top
> of both virtio PV NIC, and VF NIC. And the net_failover doesn't implemented
> operations, like ndo_set_features.
> So the code change for our netvsc driver cannot be applied to net_failover driver.
>
> I will re-submit my two patches (fixing the extra tab in the 1st one as you pointed
> out). Thanks!
I think it stands to reason that two modules which implement the same
functionality behave the same.
prev parent reply other threads:[~2019-09-07 4:26 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-30 3:45 [PATCH net-next, 0/2] Enable sg as tunable, sync offload settings to VF NIC Haiyang Zhang
2019-08-30 3:45 ` [PATCH net-next, 1/2] hv_netvsc: Allow scatter-gather feature to be tunable Haiyang Zhang
2019-08-30 23:05 ` Jakub Kicinski
2019-08-30 3:45 ` [PATCH net-next, 2/2] hv_netvsc: Sync offloading features to VF NIC Haiyang Zhang
2019-08-30 23:04 ` Jakub Kicinski
2019-08-30 23:12 ` Haiyang Zhang
2019-09-05 23:07 ` Haiyang Zhang
2019-09-07 4:25 ` Jakub Kicinski [this message]
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