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Date: Mon, 28 May 2018 21:53:45 -0700 From: Eric Dumazet <eric.dumazet@...il.com> To: Yafang Shao <laoar.shao@...il.com>, Eric Dumazet <edumazet@...gle.com> Cc: Song Liu <songliubraving@...com>, David Miller <davem@...emloft.net>, netdev <netdev@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org> Subject: Re: [PATCH v3 net-next 2/2] tcp: minor optimization around tcp_hdr() usage in tcp receive path On 05/28/2018 05:41 PM, Yafang Shao wrote: > OK. > > And what about introducing a new helper tcp_hdr_fast() ? > > /* use it when tcp header has not been pulled yet */ > static inline struct tcphdr *tcp_hdr_fast(const struct sk_buff *skb) > > { > > return (const struct tcphdr *)skb->data; > > } > > > That could help us to use this optimized one instead of the original > one if possilbe. I would rather not add such macro... The call site needs to know what is going on, so having a macro like that would not help.
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