netdev - RE: Question regarding protocol specific mtu for FCoE

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]

Message-ID: <7C88852EF6F99F4EB538472FCFEBE2223A7E7050@orsmsx509.amr.corp.intel.com>
Date:	Wed, 3 Jun 2009 13:43:02 -0700
From:	"Zou, Yi" <yi.zou@...el.com>
To:	Ben Hutchings <bhutchings@...arflare.com>
CC:	Rick Jones <rick.jones2@...com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
	"Leech, Christopher" <christopher.leech@...el.com>,
	"Dev, Vasu" <vasu.dev@...el.com>,
	"Love, Robert W" <robert.w.love@...el.com>,
	"Ma, Steve" <steve.ma@...el.com>,
	"Waskiewicz Jr, Peter P" <peter.p.waskiewicz.jr@...el.com>,
	"Kirsher, Jeffrey T" <jeffrey.t.kirsher@...el.com>
Subject: RE: Question regarding protocol specific mtu for FCoE

>On Wed, 2009-06-03 at 12:16 -0700, Zou, Yi wrote:
>[...]
>> FCoE is on L2 layer, no path specific MTU, everything goes out as
>> whatever mtu known to the nic. Since the nic is expected to be used
>for
>> converged traffic involving multiple traffic types, e.g. LAN, FCoE, I
>> was wondering if it makes sense to have the additional MTU.
>Essentially,
>> the nic driver will be able to setup via netdev for different MTUs
>for
>> converged traffic.
>
>Wouldn't you use separate VLANs for FCoE and other traffic?  So maybe
>we
>should allow for per-VLAN rather than per-protocol MTU.
>
>Ben.
>
>From what I can tell, you will not be able to set vlan device's MTU
that is larger than the real_dev->mtu, as in vlan_dev_change_mtu().

Thanks.

yi

--
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