[rt2x00-users] [PATCH 1/11] rt2x00: use ether_addr_equal_64bits

Gertjan van Wingerde gwingerde at gmail.com
Wed Jan 1 03:44:03 AEDT 2014



Sent from my iPad

> On 30 dec. 2013, at 19:14, Julia Lawall <Julia.Lawall at lip6.fr> wrote:
> 
> From: Julia Lawall <Julia.Lawall at lip6.fr>
> 
> Ether_addr_equal_64bits is more efficient than ether_addr_equal, and can be
> used when each argument is an array within a structure that contains at
> least two bytes of data beyond the array.
> 
> The structures involved are:
> ieee80211_bar defined in include/linux/ieee80211.h and
> rt2x00_bar_list_entry defined in drivers/net/wireless/rt2x00/rt2x00.h.
> 
> This was done using Coccinelle (http://coccinelle.lip6.fr/).
> 
> Signed-off-by: Julia Lawall <Julia.Lawall at lip6.fr>

Acked-by: Gertjan van Wingerde <gwingerde at gmail.com>

> 
> ---
> The semantic patch used is rather long and can be found in message 0 of
> this patch series.
> 
> drivers/net/wireless/rt2x00/rt2x00dev.c |    4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/net/wireless/rt2x00/rt2x00dev.c b/drivers/net/wireless/rt2x00/rt2x00dev.c
> index 00c3fae..2bde672 100644
> --- a/drivers/net/wireless/rt2x00/rt2x00dev.c
> +++ b/drivers/net/wireless/rt2x00/rt2x00dev.c
> @@ -565,10 +565,10 @@ static void rt2x00lib_rxdone_check_ba(struct rt2x00_dev *rt2x00dev,
> 
> #undef TID_CHECK
> 
> -        if (!ether_addr_equal(ba->ra, entry->ta))
> +        if (!ether_addr_equal_64bits(ba->ra, entry->ta))
>            continue;
> 
> -        if (!ether_addr_equal(ba->ta, entry->ra))
> +        if (!ether_addr_equal_64bits(ba->ta, entry->ra))
>            continue;
> 
>        /* Mark BAR since we received the according BA */
> 



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