netdev - RE: [RFC PATCH v1 5/5] wave: Added basic version of TCP Wave

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Date:   Mon, 31 Jul 2017 13:39:07 +0000
From:   David Laight <David.Laight@...LAB.COM>
To:     'Natale Patriciello' <natale.patriciello@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        Alexey Kuznetsov <kuznet@....inr.ac.ru>,
        James Morris <jmorris@...ei.org>,
        Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
        "Patrick McHardy" <kaber@...sh.net>
CC:     netdev <netdev@...r.kernel.org>,
        Ahmed Said <ahmed.said@...roma2.it>,
        Francesco Zampognaro <zampognaro@....uniroma2.it>,
        Cesare Roseti <roseti@....uniroma2.it>
Subject: RE: [RFC PATCH v1 5/5] wave: Added basic version of TCP Wave

From: Natale Patriciello
> Sent: 28 July 2017 20:59
..
> +static __always_inline bool test_flag(u8 value, const u8 *flags)
> +{
> +	return (*flags & value) == value;
> +}
...
> +	if (!test_flag(FLAG_INIT, &ca->flags))
> +		return;
...

That is a completely unnecessary 'helper'.
It has its arguments in the wrong order.
Doesn't need to pass by reference.
Since you only ever check one bit you don't need the '=='.
Any error seems to be silently ignored.
I bet they can't actually happen at all.

	David