netdev - Re: RFC: rtnetlink problems with Cisco enic and VFs

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:	Tue, 22 Apr 2014 14:12:00 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	ben@...adent.org.uk
Cc:	dgibson@...hat.com, netdev@...r.kernel.org, benve@...co.com,
	ssujith@...co.com, govindarajulu90@...il.com, neepatel@...co.com,
	nistrive@...co.com
Subject: Re: RFC: rtnetlink problems with Cisco enic and VFs

From: Ben Hutchings <ben@...adent.org.uk>
Date: Tue, 22 Apr 2014 19:03:19 +0100

> On Tue, 2014-04-22 at 14:14 +1000, David Gibson wrote:
>> I believe I've found a problem with netlink handling which can be
>> triggered on Cisco enic devices with a large number (30-40) of virtual
>> functions.  I believe this is the cause of a real customer problem
>> we've seen.
>> 
>>  * When requesting a list of interfaces with RTM_GETLINK, enic devices
>>    (and currently, _only_ enic devices) report IFLA_VF_PORTS
>>    information 
>> 
>>  * IFLA_VF_PORTS information has at least 90 bytes ber virtual function
>> 
>>  * Unlike IFLA_VFINFO_LIST, the ports information is always reported,
>>    regardless of the setting of the IFLA_EXT_MASK parameter
> [...]
> 
> So I think you should make reporting of IFLA_VF_PORTS dependent on the
> same flag as IFLA_VFINFO_LIST.

I think that's what we'll have to do.
--
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