Patchwork [3/3] netfilter: Remove redundant code.

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Submitter santosh nayak
Date March 1, 2012, 9:17 a.m.
Message ID <1330593466-19317-1-git-send-email-santoshprasadnayak@gmail.com>
Download mbox | patch
Permalink /patch/143967/
State Rejected
Headers show

Comments

santosh nayak - March 1, 2012, 9:17 a.m.
From: Santosh Nayak <santoshprasadnayak@gmail.com>

Remove the redundant code.

Signed-off-by: Santosh Nayak <santoshprasadnayak@gmail.com>
---
 net/bridge/netfilter/ebtables.c |   18 ++++++------------
 1 files changed, 6 insertions(+), 12 deletions(-)
Pablo Neira - March 1, 2012, 10:23 a.m.
On Thu, Mar 01, 2012 at 02:47:46PM +0530, santosh nayak wrote:
> From: Santosh Nayak <santoshprasadnayak@gmail.com>
> 
> Remove the redundant code.
> 
> Signed-off-by: Santosh Nayak <santoshprasadnayak@gmail.com>
> ---
>  net/bridge/netfilter/ebtables.c |   18 ++++++------------
>  1 files changed, 6 insertions(+), 12 deletions(-)
> 
> diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
> index 9c0f177..1efc234 100644
> --- a/net/bridge/netfilter/ebtables.c
> +++ b/net/bridge/netfilter/ebtables.c
> @@ -226,10 +226,8 @@ unsigned int ebt_do_table (unsigned int hook, struct sk_buff *skb,
>  
>  		if (EBT_MATCH_ITERATE(point, ebt_do_match, skb, &acpar) != 0)
>  			goto letscontinue;
> -		if (acpar.hotdrop) {
> -			read_unlock_bh(&table->lock);
> -			return NF_DROP;
> -		}
> +		if (acpar.hotdrop)
> +			goto out;

This is really broken! there's no "out" label in ebt_do_table as in
the previous patch!
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santosh nayak - March 1, 2012, 10:24 a.m.
Please see last line of my 2nd patch.
I have added a new label "out" .


regards
santosh

On Thu, Mar 1, 2012 at 3:53 PM, Pablo Neira Ayuso <pablo@netfilter.org> wrote:
> On Thu, Mar 01, 2012 at 02:47:46PM +0530, santosh nayak wrote:
>> From: Santosh Nayak <santoshprasadnayak@gmail.com>
>>
>> Remove the redundant code.
>>
>> Signed-off-by: Santosh Nayak <santoshprasadnayak@gmail.com>
>> ---
>>  net/bridge/netfilter/ebtables.c |   18 ++++++------------
>>  1 files changed, 6 insertions(+), 12 deletions(-)
>>
>> diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
>> index 9c0f177..1efc234 100644
>> --- a/net/bridge/netfilter/ebtables.c
>> +++ b/net/bridge/netfilter/ebtables.c
>> @@ -226,10 +226,8 @@ unsigned int ebt_do_table (unsigned int hook, struct sk_buff *skb,
>>
>>               if (EBT_MATCH_ITERATE(point, ebt_do_match, skb, &acpar) != 0)
>>                       goto letscontinue;
>> -             if (acpar.hotdrop) {
>> -                     read_unlock_bh(&table->lock);
>> -                     return NF_DROP;
>> -             }
>> +             if (acpar.hotdrop)
>> +                     goto out;
>
> This is really broken! there's no "out" label in ebt_do_table as in
> the previous patch!
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Pablo Neira - March 1, 2012, 12:30 p.m.
On Thu, Mar 01, 2012 at 02:47:46PM +0530, santosh nayak wrote:
> From: Santosh Nayak <santoshprasadnayak@gmail.com>
> 
> Remove the redundant code.

This is a cleanup.

I'll enqueue it for net-next, but I have to wait until 2/3 hits Linus
tree, so I'll store this locally until I can apply it.

Thank you!
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Patch

diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
index 9c0f177..1efc234 100644
--- a/net/bridge/netfilter/ebtables.c
+++ b/net/bridge/netfilter/ebtables.c
@@ -226,10 +226,8 @@  unsigned int ebt_do_table (unsigned int hook, struct sk_buff *skb,
 
 		if (EBT_MATCH_ITERATE(point, ebt_do_match, skb, &acpar) != 0)
 			goto letscontinue;
-		if (acpar.hotdrop) {
-			read_unlock_bh(&table->lock);
-			return NF_DROP;
-		}
+		if (acpar.hotdrop)
+			goto out;
 
 		/* increase counter */
 		(*(counter_base + i)).pcnt++;
@@ -253,10 +251,8 @@  unsigned int ebt_do_table (unsigned int hook, struct sk_buff *skb,
 			read_unlock_bh(&table->lock);
 			return NF_ACCEPT;
 		}
-		if (verdict == EBT_DROP) {
-			read_unlock_bh(&table->lock);
-			return NF_DROP;
-		}
+		if (verdict == EBT_DROP)
+			goto out;
 		if (verdict == EBT_RETURN) {
 letsreturn:
 #ifdef CONFIG_NETFILTER_DEBUG
@@ -281,8 +277,7 @@  letsreturn:
 #ifdef CONFIG_NETFILTER_DEBUG
 		if (verdict < 0) {
 			BUGPRINT("bogus standard verdict\n");
-			read_unlock_bh(&table->lock);
-			return NF_DROP;
+			goto out;
 		}
 #endif
 		/* jump to a udc */
@@ -294,8 +289,7 @@  letsreturn:
 #ifdef CONFIG_NETFILTER_DEBUG
 		if (chaininfo->distinguisher) {
 			BUGPRINT("jump to non-chain\n");
-			read_unlock_bh(&table->lock);
-			return NF_DROP;
+			goto out;
 		}
 #endif
 		nentries = chaininfo->nentries;