lkml.org 
[lkml]   [2015]   [May]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] iscsi_ibft: filter null v4-mapped v6 addresses
On 05/08/2015 12:14 AM, Chris Leech wrote:
> I've had reports of UEFI platforms failing iSCSI boot in various
> configurations, that ended up being caused by network initialization
> scripts getting tripped up by unexpected null addresses (0.0.0.0) being
> reported for gateways, dhcp servers, and dns servers.
>
> The tianocore EDK2 iSCSI driver generates an iBFT table that always uses
> IPv4-mapped IPv6 addresses for the NIC structure fields. This results
> in values that are "not present or not specified" being reported as
> ::ffff:0.0.0.0 rather than all zeros as specified.
>
> The iscsi_ibft module filters unspecified fields from the iBFT from
> sysfs, preventing userspace from using invalid values and making it easy
> to check for the presence of a value. This currently fails in regard to
> these mapped null addresses.
>
> In order to remain consistent with how the iBFT information is exposed,
> we should accommodate the behavior of the tianocore iSCSI driver as it's
> already in the wild in a large number of servers.
>
> Tested under qemu using an OVMF build of tianocore EDK2.
>
> Signed-off-by: Chris Leech <cleech@redhat.com>

Looks ok to me.

Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>




\
 
 \ /
  Last update: 2015-05-12 02:41    [W:0.098 / U:0.244 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site