netdev - Re: [ofa-general] Re: [PATCH v4 14/14] QLogic VNIC: sysfs Documentation

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:	Thu, 12 Jun 2008 17:18:38 +0200
From:	Patrick McHardy <kaber@...sh.net>
To:	Amar Mudrankit <amar.mudrankit@...gic.com>
CC:	Ramachandra K <ramachandra.kuchimanchi@...gic.com>,
	netdev@...r.kernel.org, rdreier@...co.com,
	general@...ts.openfabrics.org, poornima.kamath@...gic.com
Subject: Re: [ofa-general] Re: [PATCH v4 14/14] QLogic VNIC: sysfs Documentation

Amar Mudrankit wrote:
>>> +/sys/class/infiniband_qlgc_vnic/interfaces/<VNIC-interface-name>/
>>> +
>>> +       vnic_state      (0444)  State of the VNIC interface.
>> This I don't understand - you seem to be registering and
>> unregistering the net_device based some state machine,
>> in some cases even triggered by timers.
>>
>> Whats the idea behind this?
> 
> For a given VNIC interface, unless the VNIC host driver establishes a
> connection with EVIC
> and completes the control and data path communication sequence with
> the EVIC, the
> VNIC network device is not registered on the host.  Establishing a
> connection with EVIC
> and going through the control and data path communication involves
> multiple packet
> exchange on the IB side with the EVIC and can take some time.  The
> netpath statemachine is, hence, meant to PERIODICALLY check if
> connection is fully established with EVIC or not.
> Once connection is established, it takes care to register the VNIC netdevice.


We have linkstate/operstate for this. How is a user supposed
to configure the network device when it appears at a more or
less random time from his perspective?

--
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