Re: [PATCH v4 2/4] iw_cxgb4: add queue drain functions

On Wed, Mar 09, 2016 at 05:28:47PM +0200, Sagi Grimberg wrote:

quoted

quoted

Hi Steve,
My knowledge is limited in this driver and I have no illusion that
question sounds naive, but why did you add these functions to this
specific driver? Do the other drivers need such update too?

Thanks

Hey Leon,

I added these so iSER and other storage protocols that are or will be using the drain logic will work on cxgb4.  IB devices should
not need device-specific drain logic since the common core drain works for IB (and I assume RoCE).  iWARP devices, however, require
device-specific logic.  Other iwarp drivers are iw_cxgb3 and iw_nes.

Yes, this is iWARP specific. Steve was kind enough to fix chelsio
drivers and we need someone to pick up nes so ULPs will be able to run
reliably over it.

Steve and Sagi,
Thank you for clarification.

I see that nes driver is supported. Is it still relevant?

NETEFFECT IWARP RNIC DRIVER (IW_NES)
M:      Faisal Latif [off-list ref]
L:      linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
W:	http://www.intel.com/Products/Server/Adapters/Server-Cluster/Server-Cluster-overview.htm
S:      Supported
F:      drivers/infiniband/hw/nes/
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