netdev - RE: [PATCH V3 net-next 2/5] net:hns: Add Hip06 "RSS(Receive Side Scaling)" support to HNS Driver

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Date:	Sun, 22 Nov 2015 09:30:30 +0000
From:	Yuval Mintz <Yuval.Mintz@...gic.com>
To:	Salil Mehta <salil.mehta@...wei.com>,
	David Miller <davem@...emloft.net>,
	"robh+dt@...nel.org" <robh+dt@...nel.org>,
	"pawel.moll@....com" <pawel.moll@....com>,
	"mark.rutland@....com" <mark.rutland@....com>,
	"paul.gortmaker@...driver.com" <paul.gortmaker@...driver.com>,
	"ijc+devicetree@...lion.org.uk" <ijc+devicetree@...lion.org.uk>,
	"galak@...eaurora.org" <galak@...eaurora.org>,
	"catalin.marinas@....com" <catalin.marinas@....com>,
	"will.deacon@....com" <will.deacon@....com>,
	"arnd@...db.de" <arnd@...db.de>,
	"liguozhu@...ilicon.com" <liguozhu@...ilicon.com>,
	"yisen.zhuang@...wei.com" <yisen.zhuang@...wei.com>,
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	linux-kernel <linux-kernel@...r.kernel.org>,
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	<linux-arm-kernel@...ts.infradead.org>,
	netdev <netdev@...r.kernel.org>,
	"linuxarm@...wei.com" <linuxarm@...wei.com>
Subject: RE: [PATCH V3 net-next 2/5] net:hns: Add Hip06 "RSS(Receive Side
 Scaling)" support to HNS Driver

>  static void hns_ppe_init_hw(struct hns_ppe_cb *ppe_cb)  {
...
> +	/* Set default RSS key and indrection table*/
> +	const u32 rss_key[HNS_PPEV2_RSS_KEY_NUM] = {
> +		0x6d5a56da, 0x255b0ec2,
> +		0x4167253d, 0x43a38fb0,
> +		0xd0ca2bcb, 0xae7b30b4,
> +		0x77cb2da3, 0x8030f20c,
> +		0x6a42b73b, 0xbeac01fa,
> +	};
> +
> +	/* set default RSS key and remember it */
> +	for (i = 0; i < HNS_PPEV2_RSS_KEY_NUM; i++)
> +		ppe_cb->rss_key[i]  = rss_key[i];
> 

Is there any reason for the special default key?
Why not use netdev_rss_key_fill()?

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