netdev - Re: [PATCH next-next 5/6] net: Call skb_checksum

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Message-Id: <20140407.131512.2218385912431719305.davem@davemloft.net>
Date:	Mon, 07 Apr 2014 13:15:12 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	therbert@...gle.com
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH next-next 5/6] net: Call skb_checksum_init in IPv6

From: Tom Herbert <therbert@...gle.com>
Date: Fri, 4 Apr 2014 17:28:09 -0700 (PDT)

> @@ -62,6 +62,14 @@ __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
>  EXPORT_SYMBOL(csum_ipv6_magic);
>  #endif
>  
> +__wsum ip6_pseudo_compute(struct sk_buff *skb, int proto)
> +{
> +	return ~csum_unfold(csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
> +					    &ipv6_hdr(skb)->daddr,
> +					    skb->len, proto, 0));
> +}
> +EXPORT_SYMBOL(ip6_pseudo_compute);

Similarly to the ipv4 case this should really be inline.

I see what the problem is, you've made this now a callback so now it
can't be really inlined any more.

That's really a terrible negative to this set of changes, please see
if you can avoid that and inline all of this exactly how it is done
now in the input paths.

Thanks.
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