Re: [Bridge] [PATCH net-next v7 01/10] net: bridge: extend the process of special frames

[Stephen Hemminger]

On Tue, 27 Oct 2020 10:02:42 +0000
Henrik Bjoernlund via Bridge <bridge@xxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:

> +/* Return 0 if the frame was not processed otherwise 1
> + * note: already called with rcu_read_lock
> + */
> +static int br_process_frame_type(struct net_bridge_port *p,
> +				 struct sk_buff *skb)
> +{
> +	struct br_frame_type *tmp;
> +
> +	hlist_for_each_entry_rcu(tmp, &p->br->frame_type_list, list)
> +		if (unlikely(tmp->type == skb->protocol))
> +			return tmp->frame_handler(p, skb);
> +
> +	return 0;
> +}

Does the linear search of frame types have noticable impact on performance?
Hint: maybe a bitmap or something would be faster.