On Sun, 2016-12-18 at 22:56 +0200, Julian Anastasov wrote:
>
> +static inline void sock_confirm_neigh(struct sk_buff *skb, struct neighbour *n)
> +{
> + if (unlikely(skb->dst_pending_confirm)) {
> + struct sock *sk = skb->sk;
> + unsigned long now = jiffies;
> +
> + /* avoid dirtying neighbour */
> + if (n->confirmed != now)
> + n->confirmed = now;
> + if (sk && sk->sk_dst_pending_confirm)
> + sk->sk_dst_pending_confirm = 0;
> + }
> +}
> +
I am still digesting this awesome patch series ;)
Not sure why you used an unlikely() here. TCP for example would hit this
path quite often.
So considering sk_dst_pending_confirm might be dirtied quite often,
I am not sure why you placed it in the cache line that contains
sk_rx_dst (in 1st patch)
Thanks.
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