linux-kernel - RE: [PATCH net-next?] pktgen: Use simpler test for non-zero ipv6 address

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Message-ID: <AE90C24D6B3A694183C094C60CF0A2F6026B7036@saturn3.aculab.com>
Date:	Thu, 11 Oct 2012 09:08:52 +0100
From:	"David Laight" <David.Laight@...LAB.COM>
To:	"Joe Perches" <joe@...ches.com>, "netdev" <netdev@...r.kernel.org>
Cc:	"LKML" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH net-next?] pktgen: Use simpler test for non-zero ipv6 address

> -		if (pkt_dev->min_in6_daddr.s6_addr32[0] == 0 &&
> -		    pkt_dev->min_in6_daddr.s6_addr32[1] == 0 &&
> -		    pkt_dev->min_in6_daddr.s6_addr32[2] == 0 &&
> -		    pkt_dev->min_in6_daddr.s6_addr32[3] == 0) ;
> -		else {
> +		if (pkt_dev->min_in6_daddr.s6_addr32[0] |
> +		    pkt_dev->min_in6_daddr.s6_addr32[1] |
> +		    pkt_dev->min_in6_daddr.s6_addr32[2] |
> +		    pkt_dev->min_in6_daddr.s6_addr32[3]) {

Given the likely values, it might be worth using:
		if (pkt_dev->min_in6_daddr.s6_addr32[0] == 0 &&
		    pkt_dev->min_in6_daddr.s6_addr32[1] |
		    pkt_dev->min_in6_daddr.s6_addr32[2] |
		    pkt_dev->min_in6_daddr.s6_addr32[3]) {

	David



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