# Re: \[PATCH net-next 3/8\] bridge: implement BPDU blocking

- From: Cong Wang \<hidden\>
- Date: 2012-10-31 02:39:03 
- List: netdev
- Page: https://ratatoskr.run/netdev/2012/10/10907302
- Thread: https://ratatoskr.run/netdev/2012/10/10907235/t.md

```text
On Tue, 30 Oct 2012 at 00:57 GMT, Stephen Hemminger [ref] wrote:
> --- a/net/bridge/br_stp_bpdu.c	2012-10-29 17:07:08.005982838 -0700
> +++ b/net/bridge/br_stp_bpdu.c	2012-10-29 17:31:14.327457434 -0700
> @@ -170,6 +170,13 @@ void br_stp_rcv(const struct stp_proto *
>  	if (!ether_addr_equal(dest, br->group_addr))
>  		goto out;
>  
> +	if (p->flags & BR_BPDU_GUARD) {
> +		br_notice(br, "BPDU received on blocked port %u(%s)\n",
> +			  (unsigned int) p->port_no, p->dev->name);

net_ratelimit() ?
```