Re: [PATCH net-next v1 2/9] net: dsa: tag_ar9331: detect IGMP and MLD packets

[Andrew Lunn]

> @@ -31,6 +96,13 @@ static struct sk_buff *ar9331_tag_xmit(struct sk_buff *skb,
>  	__le16 *phdr;
>  	u16 hdr;
>  
> +	if (dp->stp_state == BR_STATE_BLOCKING) {
> +		/* TODO: should we reflect it in the stats? */
> +		netdev_warn_once(dev, "%s:%i dropping blocking packet\n",
> +				 __func__, __LINE__);
> +		return NULL;
> +	}
> +
>  	phdr = skb_push(skb, AR9331_HDR_LEN);
>  
>  	hdr = FIELD_PREP(AR9331_HDR_VERSION_MASK, AR9331_HDR_VERSION);

Hi Oleksij

This change does not seem to fit with what this patch is doing.

I also think it is wrong. You still need BPDU to pass through a
blocked port, otherwise spanning tree protocol will be unstable.

	Andrew