netdev - Re: [RFC PATCH net-next 1/3] skbuff: export skb_gro

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Date:	Wed, 27 Jan 2016 16:46:25 -0200
From:	Marcelo Ricardo Leitner <marcelo.leitner@...il.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	netdev@...r.kernel.org, Neil Horman <nhorman@...driver.com>,
	Vlad Yasevich <vyasevich@...il.com>,
	David Miller <davem@...emloft.net>, brouer@...hat.com,
	alexander.duyck@...il.com, alexei.starovoitov@...il.com,
	borkmann@...earbox.net, marek@...udflare.com,
	hannes@...essinduktion.org, fw@...len.de, pabeni@...hat.com,
	john.r.fastabend@...el.com, linux-sctp@...r.kernel.org
Subject: Re: [RFC PATCH net-next 1/3] skbuff: export skb_gro_receive

Em 27-01-2016 16:35, Eric Dumazet escreveu:
> On Wed, 2016-01-27 at 15:06 -0200, Marcelo Ricardo Leitner wrote:
>> sctp GSO requires it and sctp can be compiled as a module, so export
>> this function.
>>
>> Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@...il.com>
>> ---
>>   net/core/skbuff.c | 1 +
>>   1 file changed, 1 insertion(+)
>>
>> diff --git a/net/core/skbuff.c b/net/core/skbuff.c
>> index b2df375ec9c2173a8132b8efa1c3062f0510284b..704b69682085dec77f3d0f990aaf0024afd705b9 100644
>> --- a/net/core/skbuff.c
>> +++ b/net/core/skbuff.c
>> @@ -3312,6 +3312,7 @@ done:
>>   	NAPI_GRO_CB(skb)->same_flow = 1;
>>   	return 0;
>>   }
>> +EXPORT_SYMBOL_GPL(skb_gro_receive);
>>
>>   void __init skb_init(void)
>>   {
>
>
> Normally, all the offloading support belongs in vmlinux, so this export
> is not needed.
>
> For instance, we support GRO IPV6 even if IPv6 is not enabled on the
> host.
>
> Ie all these net/ipv6 files are included in vmlinux if CONFIG_INET is
> enabled
>
> ip6_offload.o tcpv6_offload.o udp_offload.o exthdrs_offload.o

Okay. For SCTP it might be a bit harder due to its CRC, which is using 
crc32c function. I'll check it.

Thanks,
Marcelo