linux-kernel - Re: [PATCH v2] ieee80211: Print human-readable disassoc/deauth reason codes

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Date:	Mon, 10 Feb 2014 17:39:00 -0800
From:	Joe Perches <joe@...ches.com>
To:	Calvin Owens <jcalvinowens@...il.com>
Cc:	Johannes Berg <johannes@...solutions.net>,
	"David S. Miller" <davem@...emloft.net>,
	"John W. Linville" <linville@...driver.com>,
	linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] ieee80211: Print human-readable disassoc/deauth
 reason codes

On Mon, 2014-02-10 at 19:25 -0600, Calvin Owens wrote:
> Create a function to return a descriptive string for each reason code,
> and print that instead of the numeric value in the kernel log. These
> codes are easily found on popular search engines, but one is generally
> not able to access the internet when dealing with wireless connectivity
> issues.
> 
> Changes since v1: Refactored array of strings into switch statement,
> print numeric code in addition to string.

trivia:

> +const char *ieee80211_get_reason_code_string(u16 reason_code)
> +{
> +	enum ieee80211_reasoncode r = reason_code;

what good does this temporary do?

> +	switch(r) {

space after switch please.

> +	case WLAN_REASON_UNSPECIFIED: return "UNSPECIFIED";
> +	case WLAN_REASON_PREV_AUTH_NOT_VALID: return "PREV_AUTH_NOT_VALID";
> +	case WLAN_REASON_DEAUTH_LEAVING: return "DEAUTH_LEAVING";

This seems a bit too wall of text to me.

Maybe a simplifying macro like:

#define case_WLAN(type)				\
	case WLAN_REASON_##type: return #type

and use:
	switch (reason_code) {
	case_WLAN(UNSPECIFIED);
	case_WLAN(PREV_AUTH_NOT_VALID);

etc...


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