[dpdk-dev] [PATCH 0/4] DPDK polling-mode driver for Amazon Elastic Network Adapters (ENA)

Jan Mędala jan at semihalf.com
Fri Jan 29 16:42:05 CET 2016

Hello Thomas,

2016-01-28 16:40 GMT+01:00 Thomas Monjalon <thomas.monjalon at 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


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