linux-kernel - Re: [PATCH 09/21] batman-adv: slight optimization of addr compare

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Date:	Mon, 23 Dec 2013 17:10:34 +0800
From:	Ding Tianhong <dingtianhong@...wei.com>
To:	Joe Perches <joe@...ches.com>,
	Antonio Quartulli <antonio@...hcoding.com>
CC:	Marek Lindner <mareklindner@...mailbox.ch>,
	Simon Wunderlich <sw@...onwunderlich.de>,
	"David S. Miller" <davem@...emloft.net>,
	<b.a.t.m.a.n@...ts.open-mesh.org>, Netdev <netdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 09/21] batman-adv: slight optimization of addr compare

On 2013/12/23 16:59, Joe Perches wrote:
> On Mon, 2013-12-23 at 09:46 +0100, Antonio Quartulli wrote:
>> On 23/12/13 06:10, Ding Tianhong wrote:
>>
>> [...]
>>
>>> --- a/net/batman-adv/originator.c
>>> +++ b/net/batman-adv/originator.c
>>> @@ -41,7 +41,7 @@ int batadv_compare_orig(const struct hlist_node *node, const void *data2)
>>>  	const void *data1 = container_of(node, struct batadv_orig_node,
>>>  					 hash_entry);
>>>  
>>> -	return (memcmp(data1, data2, ETH_ALEN) == 0 ? 1 : 0);
>>> +	return ether_addr_equal_unaligned(data1, data2) ? 1 : 0;
>>
>> ether_addr_equal_unaligned() returns a bool value which is implicitly
>> converted to 1 or 0: there is no need for the ternary if anymore.
> 
> Should these use batadv_compare_eth?
> 
> 

Yes, and need to remove the checks for return value.

Regards
Ding 

> 
> 


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