lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Fri, 8 Mar 2013 10:47:26 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Cong Wang <amwang@...hat.com>
Cc:	netdev@...r.kernel.org, bridge@...ts.linux-foundation.org,
	Stephen Hemminger <stephen@...workplumber.org>,
	"David S. Miller" <davem@...emloft.net>,
	Adam Baker <linux@...er-net.org.uk>
Subject: Re: [Patch net] bridge: do not expire mdb entry when bridge still
 uses it

On Fri, Mar 08, 2013 at 10:44:06AM +0800, Cong Wang wrote:
>
> This is a good question. It is due to inside br_handle_frame_finish() we
> use 'skb2' to decide if we deliver packets to bridge itself, and in this
> case 'skb2' is non-NULL only when:
> 
>                 if (mdst || BR_INPUT_SKB_CB_MROUTERS_ONLY(skb)) {
>                         if ((mdst && mdst->mglist) ||
>                             br_multicast_is_router(br))
>                                 skb2 = skb; //        <======== HERE
>                         br_multicast_forward(mdst, skb, skb2);
> 
> For other ports, br_multicast_forward() will always forward 'skb' to
> them.

Yes but the point is that other ports should also expire after the
timeout and thus be removed from mdst.  So why is this only happening
for the bridge aka mdst->mglist?

Thanks,
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Powered by blists - more mailing lists