linux-kernel - Re: [PATCH net 00/19] net: hns: Misc. HNS Bug Fixes & Code Improvements

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Date:   Thu, 30 Mar 2017 20:03:17 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     salil.mehta@...wei.com
Cc:     yisen.zhuang@...wei.com, mehta.salil.lnk@...il.com,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        linuxarm@...wei.com
Subject: Re: [PATCH net 00/19] net: hns: Misc. HNS Bug Fixes & Code
 Improvements

From: Salil Mehta <salil.mehta@...wei.com>
Date: Thu, 30 Mar 2017 16:30:47 +0100

> This patch set introduces various HNS bug fixes, optimizations and code
> improvements.

There is no way you should do such an expensive calculation for every
single transmit packet as you are doing in your select_queue() routine.

That's really crazy.

Just use the networking stack's queue selection scheme, or suggest
ways to improve it.  Don't do private hashing like this in your
driver, please!