netdev - Re: [PATCH net-next 10/16] qlge: Factor out duplicated expression

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Message-ID: <20190628085222.GA14978@f1>
Date:   Fri, 28 Jun 2019 17:52:22 +0900
From:   Benjamin Poirier <bpoirier@...e.com>
To:     Manish Chopra <manishc@...vell.com>
Cc:     David Miller <davem@...emloft.net>,
        GR-Linux-NIC-Dev <GR-Linux-NIC-Dev@...vell.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next 10/16] qlge: Factor out duplicated expression

On 2019/06/25 18:32, Manish Chopra wrote:
[...]
> > 
> > What I inferred from the presence of that expression though is that in the
> > places where it is used, the device interprets a value of 0 as 65536. Manish,
> > can you confirm that? As David points out, the expression is useless. A
> > comment might not be however.
> 
> Yes,  I think it could be simplified to simple cast just.
> 

I checked and it seems like the device treats cqicq->lbq_buf_size = 0
more like 65536 than like 0. That is, I saw it write up to 9596B
(running at 9000 mtu...) in a single lbq buffer.