[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
devices?

Thanks,
Jan


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