netdev - Re: [PATCH 2/2] llc: fix checkpatch errors with space

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Date:	Fri, 20 Dec 2013 12:52:36 +0800
From:	chenweilong <chenweilong@...wei.com>
To:	Joe Perches <joe@...ches.com>
CC:	<acme@...stprotocols.net>, <davem@...emloft.net>,
	<netdev@...r.kernel.org>
Subject: Re: [PATCH 2/2] llc: fix checkpatch errors with space

On 2013/12/20 11:48, Joe Perches wrote:
> On Fri, 2013-12-20 at 11:15 +0800, Chen Weilong wrote:
>> From: Weilong Chen <chenweilong@...wei.com>
> []
>> diff --git a/net/llc/llc_proc.c b/net/llc/llc_proc.c
>> index 1a3c7e0..abf28eb 100644
>> --- a/net/llc/llc_proc.c
>> +++ b/net/llc/llc_proc.c
>> @@ -142,7 +142,7 @@ static int llc_seq_socket_show(struct seq_file *seq, void *v)
>>  	if (llc->dev)
>>  		llc_ui_format_mac(seq, llc->dev->dev_addr);
>>  	else {
>> -		u8 addr[6] = {0,0,0,0,0,0};
>> +		u8 addr[6] = {0, 0, 0, 0, 0, 0};
>>  		llc_ui_format_mac(seq, addr);
> 
> No need to constantly reinitialize addr and the
> static function llc_ui_format_mac is pretty useless.
> 
> Perhaps this instead?
> 
> Consolidate multiple seq_printfs to a single call.
> Remove unnecessary llc_ui_format_mac and use %pM directly.
> 
> ---
>  net/llc/llc_proc.c | 22 ++++++----------------
>  1 file changed, 6 insertions(+), 16 deletions(-)
> 
> diff --git a/net/llc/llc_proc.c b/net/llc/llc_proc.c
> index 1a3c7e0..f264038 100644
> --- a/net/llc/llc_proc.c
> +++ b/net/llc/llc_proc.c
> @@ -26,11 +26,6 @@
>  #include <net/llc_c_st.h>
>  #include <net/llc_conn.h>
>  
> -static void llc_ui_format_mac(struct seq_file *seq, u8 *addr)
> -{
> -	seq_printf(seq, "%pM", addr);
> -}
> -
>  static struct sock *llc_get_sk_idx(loff_t pos)
>  {
>  	struct llc_sap *sap;
> @@ -125,6 +120,7 @@ static void llc_seq_stop(struct seq_file *seq, void *v)
>  
>  static int llc_seq_socket_show(struct seq_file *seq, void *v)
>  {
> +	static const u8 null_addr[ETH_ALEN] = {0, 0, 0, 0, 0, 0};
>  	struct sock* sk;
>  	struct llc_sock *llc;
>  
> @@ -137,17 +133,11 @@ static int llc_seq_socket_show(struct seq_file *seq, void *v)
>  	llc = llc_sk(sk);
>  
>  	/* FIXME: check if the address is multicast */
> -	seq_printf(seq, "%2X  %2X ", sk->sk_type, 0);
> -
> -	if (llc->dev)
> -		llc_ui_format_mac(seq, llc->dev->dev_addr);
> -	else {
> -		u8 addr[6] = {0,0,0,0,0,0};
> -		llc_ui_format_mac(seq, addr);
> -	}
> -	seq_printf(seq, "@%02X ", llc->sap->laddr.lsap);
> -	llc_ui_format_mac(seq, llc->daddr.mac);
> -	seq_printf(seq, "@%02X %8d %8d %2d %3u %4d\n", llc->daddr.lsap,
> +	seq_printf(seq, "%2X  %2X %pM@...X %pM@...X %8d %8d %2d %3u %4d\n",
> +		   sk->sk_type, 0,
> +		   llc->dev ? llc->dev->dev_addr : null_addr,
> +		   llc->sap->laddr.lsap,
> +		   llc->daddr.mac, llc->daddr.lsap,
>  		   sk_wmem_alloc_get(sk),
>  		   sk_rmem_alloc_get(sk) - llc->copied_seq,
>  		   sk->sk_state,
> 
> 
> 
> --
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> 
> 
That's very good.
Thanks!

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