From: Thomas Monjalon <thomas.monjalon@6wind.com>
To: "Jan Mędala" <jan@semihalf.com>
Cc: dev@dpdk.org, matua@amazon.com
Subject: Re: [dpdk-dev] [PATCH 0/4] DPDK polling-mode driver for Amazon Elastic Network Adapters (ENA)
Date: Fri, 29 Jan 2016 17:04:38 +0100 [thread overview]
Message-ID: <4897294.Qu5cHfHmna@xps13> (raw)
In-Reply-To: <CANw_3ZdgKWicPLNLLN6CBwRkFdLg=T2y3QQxX8kr-FCmD_57ug@mail.gmail.com>
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?
next prev parent reply other threads:[~2016-01-29 16:05 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 [this message]
2016-01-30 16:39 ` Matushevsky, Alexander
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