netdev - RE: [iproute PATCH v2 7/7] ip/tcp_metrics: Simplify process

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Date:	Wed, 22 Jun 2016 13:00:08 +0000
From:	David Laight <David.Laight@...LAB.COM>
To:	'Jakub Sitnicki' <jkbs@...hat.com>, Phil Sutter <phil@....cc>
CC:	Stephen Hemminger <shemming@...cade.com>,
	Daniel Borkmann <daniel@...earbox.net>,
	David Ahern <dsa@...ulusnetworks.com>,
	"Nicolas Dichtel" <nicolas.dichtel@...nd.com>,
	Julien Floret <julien.floret@...nd.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: RE: [iproute PATCH v2 7/7] ip/tcp_metrics: Simplify process_msg a
 bit

From: Jakub Sitnicki
> Sent: 22 June 2016 12:34
...
> > -	a = attrs[TCP_METRICS_ATTR_ADDR_IPV4];
> > -	if (a) {
> > +	if ((a = attrs[TCP_METRICS_ATTR_ADDR_IPV4])) {
> 
> Copy the pointer inside the branch?
> 
> Same gain on indentation while keeping checkpatch happy.

Or as below (hacked from the mails):

	a = attrs[TCP_METRICS_ATTR_ADDR_IPV4];
	if (a) {
 		if (f.daddr.family && f.daddr.family != AF_INET)
 			return 0;
 		memcpy(&daddr.data, RTA_DATA(a), 4);
 		daddr.bytelen = 4;
 		family = AF_INET;
 		atype = TCP_METRICS_ATTR_ADDR_IPV4;
 		dlen = RTA_PAYLOAD(a);
	} else {
		a = attrs[TCP_METRICS_ATTR_ADDR_IPV6];
		if (!a)
			return 0;
		memcpy(&daddr.data, RTA_DATA(a), 16);
		daddr.bytelen = 16;
		family = AF_INET6;
		atype = TCP_METRICS_ATTR_ADDR_IPV6;
		dlen = RTA_PAYLOAD(a);
	}

	David