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

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Message-ID: <20170729083234.57f58ab5@xeon-e3>
Date:   Sat, 29 Jul 2017 08:32:34 -0700
From:   Stephen Hemminger <stephen@...workplumber.org>
To:     Natale Patriciello <natale.patriciello@...il.com>
Cc:     "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>,
        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

On Fri, 28 Jul 2017 21:59:19 +0200
Natale Patriciello <natale.patriciello@...il.com> wrote:

> +
> +#define WAVE_DEBUG 1
> +
> +#ifdef WAVE_DEBUG
> +	#define DBG(msg ...) printk(KERN_DEBUG "WAVE_DEBUG: " msg)
> +#else
> +	static inline void DBG(const char *msg, ...) { }
> +#endif
> +

Don't reinvent your own debug macros.
Use standard pr_debug instead.

+
+	if (ca->history != 0)
+		kfree(ca->history);

First, off the comparison should be with NULL not 0.
Secondly, kfree already does the right thing with kfree(NULL).

+		/* Usually the burst end is also reflected in the rs->delivered
+		 * variable. If this is not the case, and such variable is
+		 * behind just for 1 segment, then do this experimental thing
+		 * to re-allineate the burst with the rs->delivered variable.
+		 * In the majority of cases, we went out of allineation because
+		 * of a tail loss probe. */

Put the last */ in column with other parts of block.
		* of a tail loss probe.
		*/