netdev - Re: [PATCH 03/10] ovs: Enable handling of UFO6 packets.

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Date:	Wed, 17 Dec 2014 15:44:19 -0500
From:	Vlad Yasevich <vyasevic@...hat.com>
To:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
	Vladislav Yasevich <vyasevich@...il.com>,
	netdev@...r.kernel.org
CC:	virtualization@...ts.linux-foundation.org, mst@...hat.com,
	ben@...adent.org.uk, stefanha@...hat.com
Subject: Re: [PATCH 03/10] ovs: Enable handling of UFO6 packets.

On 12/17/2014 03:17 PM, Sergei Shtylyov wrote:
> Hello.
> 
> On 12/17/2014 09:20 PM, Vladislav Yasevich wrote:
> 
>> Since UFO6 packets can now be identified by SKB_GSO_UDP6, add proper checks
>> to handel UFO6 flows.
>> Legacy applications may still have UFO6 packets identified by SKB_GSO_UDP,
>> so we need to continue to handle them correclty.
> 
>> Signed-off-by: Vladislav Yasevich <vyasevic@...hat.com>
>> ---
>>   net/openvswitch/datapath.c | 3 ++-
>>   net/openvswitch/flow.c     | 2 +-
>>   2 files changed, 3 insertions(+), 2 deletions(-)
> 
>> diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c
>> index f9e556b..b43fc60 100644
>> --- a/net/openvswitch/datapath.c
>> +++ b/net/openvswitch/datapath.c
>> @@ -334,7 +334,8 @@ static int queue_gso_packets(struct datapath *dp, struct sk_buff *skb,
>>           if (err)
>>               break;
>>
>> -        if (skb == segs && gso_type & SKB_GSO_UDP) {
>> +        if (skb == segs &&
>> +            ((gso_type & SKB_GSO_UDP) || (gso_type & SKB_GSO_UDP6))) {
> 
>    'gso_type & (SKB_GSO_UDP | SKB_GSO_UDP6)' would be shorter...

Thanks, will do.

-vlad

> 
>>               /* The initial flow key extracted by ovs_flow_extract()
>>                * in this case is for a first fragment, so we need to
>>                * properly mark later fragments.
>> diff --git a/net/openvswitch/flow.c b/net/openvswitch/flow.c
>> index 2b78789..d03adf4 100644
>> --- a/net/openvswitch/flow.c
>> +++ b/net/openvswitch/flow.c
>> @@ -602,7 +602,7 @@ static int key_extract(struct sk_buff *skb, struct sw_flow_key *key)
>>
>>           if (key->ip.frag == OVS_FRAG_TYPE_LATER)
>>               return 0;
>> -        if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP)
>> +        if (skb_shinfo(skb)->gso_type & (SKB_GSO_UDP | SKB_GSO_UDP6))
> 
>    .... like here.
> 
> [...]
> 
> WBR, Sergei
> 

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