On Mon, Jan 09, 2017 at 07:39:54PM -0800, Vishwanathapura, Niranjana wrote: > On Mon, Jan 09, 2017 at 09:51:04AM +0200, Leon Romanovsky wrote: > > On Thu, Dec 15, 2016 at 11:28:06AM -0500, Doug Ledford wrote: > > > On 12/15/2016 9:52 AM, ira.weiny wrote: > > > > > > 2) With more than 60% of the code being MAD related, and another > > > significant chunk being hfi related, and only a minor bit (20% maybe?) > > > being net related, > > > > Hi Doug and Ira, > > > > I may admit that I didn't read the code very deep, but from brief > > overview, I didn't find support for the claim the "60% code is MAD related". > > It looks like the opposite thing will be more accurate. > > > > Can you help me to understand this claim? How did you come to this > > conclusion? > > > > Thanks > > Hi Leon, > > Here is the breakdown of patches based on functionality.
Hi Niranjana, Thank you for breakdown, it helped a lot. > In this series, patches #3..#8 compose hfi_vnic driver. In that, patches #4, > #7 and #8 are MAD focused (interfacing with MAD agent and handling MAD > packets). Patch #3 is net device with all goodies from net stack. https://patchwork.kernel.org/patch/9475639/ Patch #4 has one IB MAD related struct, all other things are specific to OFA and HFI declarations. https://patchwork.kernel.org/patch/9475653/ Patch #7 continues to implement agnostic to IB MAD net device. https://patchwork.kernel.org/patch/9475641/ Patch #8 is without doubts, MAD related. https://patchwork.kernel.org/patch/9475651/ Let's put aside patch #8, in such case, the proposed code won't need IB/core at all and will look exactly like many other net drivers which encapsulate/decapsulate packets. > Patch #6 and half of #3 (_encap.c/h) are OPA encapsulation related. Patch #5 > is netdev statistic related (which includes statistics MAD definitions). > So, only part of patch #3 (_netdev.c and _ethtool.c) deals with interfacing > with netstack. > Those percentage numbers are based on actual lines of code in these patches > (files). > > We are also looking into Jason’s suggestion to make hfi_vnic interface to > the bottom driver a generic interface. This will include moving some of the > netstack interfacing to the bottom hfi1 driver. Great, do you have rough estimation when will it be posted on the ML? Thanks > > Niranjana >
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