netdev - Re: [PATCH net-next 1/4] net: Add skb_headers_offset

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Message-ID: <CALnjE+pDX_TRfy3hUykQxEBv=8zO4zic=91rpM3COXTw5dJZeg@mail.gmail.com>
Date:	Thu, 7 Mar 2013 23:23:02 -0800
From:	Pravin Shelar <pshelar@...ira.com>
To:	Stephen Hemminger <stephen@...workplumber.org>
Cc:	davem@...emloft.net, netdev@...r.kernel.org, jesse@...ira.com
Subject: Re: [PATCH net-next 1/4] net: Add skb_headers_offset_update helper function.

On Thu, Mar 7, 2013 at 9:40 PM, Stephen Hemminger
<stephen@...workplumber.org> wrote:
> On Thu,  7 Mar 2013 15:21:40 -0800
> Pravin B Shelar <pshelar@...ira.com> wrote:
>
>> +static void skb_headers_offset_update(struct sk_buff *skb, int off)
>> +{
>> +     /* {transport,network,mac}_header and tail are relative to skb->head */
>> +     skb->transport_header += off;
>> +     skb->network_header   += off;
>> +     if (skb_mac_header_was_set(skb))
>> +             skb->mac_header += off;
>> +     skb->inner_transport_header += off;
>> +     skb->inner_network_header += off;
>> +}
>> +
>
> Won't this cause an unused function warning if NET_SKBUFF_DATA_USES_OFFSET is defined?

This function is used in both cases, so it should be ok.

Thanks,
Pravin.
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