From: "Matushevsky, Alexander" <matua@amazon.com>
To: "Thomas Monjalon" <thomas.monjalon@6wind.com>,
"Jan Mędala" <jan@semihalf.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH 0/4] DPDK polling-mode driver for Amazon Elastic Network Adapters (ENA)
Date: Sat, 30 Jan 2016 16:39:21 +0000 [thread overview]
Message-ID: <1454171959264.60092@amazon.com> (raw)
In-Reply-To: <4897294.Qu5cHfHmna@xps13>
Hello Thomas,
Regarding the documentation, we are going to add a description in doc/guides/nics in updated patch early on the upcoming week.
The full device spec still undergoes internal review, and will be released as soon as we have the approvals.
Best regards,
Alex
________________________________________
From: Thomas Monjalon <thomas.monjalon@6wind.com>
Sent: Friday, January 29, 2016 6:04 PM
To: Jan Mędala
Cc: Matushevsky, Alexander; dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH 0/4] DPDK polling-mode driver for Amazon Elastic Network Adapters (ENA)
2016-01-29 16:42, Jan Mędala:
> Hello Thomas,
>
> 2016-01-28 16:40 GMT+01:00 Thomas Monjalon <thomas.monjalon@6wind.com>:
>
> > > lib/librte_eal/linuxapp/ena_uio/ena_uio_driver.c | 276 +++
> >
> > Sorry the kernel module party is over.
> > One day, igb_uio will be removed.
> > I suggest to make a first version without interrupt support
> > and work with Linux community to fix your issues.
>
> Rationale to deliver UIO kernel module is based on lack of legacy INTx
> interrupts in ENA device. It's operating only on MSI-X.
> Currently we do not implement interrupt support (yet) in PMD, but hardware
> was unable to operate under uio_generic_pci driver - probe is failing.
> It might be possible to use igb_uio kmod with ENA and I will do necessary
> investigation+experiments to prove that.
>
> Could you elaborate on the topic of kernel module removal - how would it
> look like, is there going to be generic PCI driver dedicated for MSI-X
> devices?
VFIO is the driver which should cover every needs for userspace drivers
requiring a generic kernel module. Another approach is used for mlx devices.
Thanks for checking how to improve your driver.
My other question was about documentation. I don't know your device.
Please any info or pointer?
prev parent reply other threads:[~2016-01-30 16:39 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-28 15:20 Jan Medala
2016-01-28 15:20 ` [dpdk-dev] [PATCH 1/4] Amazon ENA UIO driver Jan Medala
2016-01-28 15:20 ` [dpdk-dev] [PATCH 2/4] Amazon ENA communication layer Jan Medala
2016-01-28 15:20 ` [dpdk-dev] [PATCH 3/4] Amazon ENA communication layer for DPDK platform Jan Medala
2016-01-28 15:20 ` [dpdk-dev] [PATCH 4/4] DPDK polling-mode driver for Amazon Elastic Network Adapters (ENA) Jan Medala
2016-01-28 15:40 ` [dpdk-dev] [PATCH 0/4] " Thomas Monjalon
2016-01-29 15:42 ` Jan Mędala
2016-01-29 16:04 ` Thomas Monjalon
2016-01-30 16:39 ` Matushevsky, Alexander [this message]
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