Configuring DHCP Server with Infiniband

Thu Apr 4 14:07:17 UTC 2013

Hi Hal,

Do you know where I can retrieve those patches? It doesn't quite make sense
why there IS some Infiniband support code, such as for parsing (parse.c)
and token (con flax.c) in the code, but not all of it.

Reading the parts of the OFED documentation says this:

>
===============================================================================
> 3. IPoIB Configuration Based on DHCP
>
===============================================================================
>
> Setting an IPoIB interface configuration based on DHCP (v3.0.4 which is
> available via www.isc.org) is performed similarly to the configuration of
> Ethernet interfaces. In other words, you need to make sure that IPoIB
> configuration files include the following line:
>    For RedHat:
>    BOOTPROTO=dhcp
>    For SLES:
>    BOOTPROTO=dhcp
> Note: If IPoIB configuration files are included, ifcfg-ib<n> files will be
> installed under:
> /etc/sysconfig/network-scripts/ on a RedHat machine
> /etc/sysconfig/network/ on a SuSE machine
>
> Note: Two patches for DHCP are required for supporting IPoIB. The patch
files
> for DHCP v3.0.4 are available under the docs/dhcp/ directory.
>
> Standard DHCP fields holding MAC addresses are not large enough to
contain an
> IPoIB hardware address. To overcome this problem, DHCP over InfiniBand
messages
> convey a client identifier field used to identify the DHCP session. This
client
> identifier field can be used to associate an IP address with a client
identifier
> value, such that the DHCP server will grant the same IP address to any
client
> that conveys this client identifier.

I don't see how to download an older version (3.0.4 vs. 4.2.5) nor is there
a /doc/dhcp/ folder in 4.2.5 that holds patches.

Malek

On Thu, Apr 4, 2013 at 9:25 AM, Hal Rosenstock <hal.rosenstock at gmail.com>wrote:

> Hi,
>
> On Thu, Apr 4, 2013 at 9:14 AM, Malek Musleh <malek.musleh at gmail.com>wrote:
>
>> Hi,
>>
>> I am using the latest dhcp package from ISC (dhcp-4.2.5-P1), and I am
>> trying to configure my dhcp server for infiniband clients. The server host
>> machine has infiniband port, as well as several client machines.
>>
>> Looking through the source code, it seems that there is infiniband
>> support (unlike prior dhcp rpms where patches need to be applied, patches
>> of which in themselves are incomplete).
>>
>> I installed the package, and when I try to run the dhcp server to listen
>> on the infiniband port (ib0) as follows:
>> # dhcpd ib0 -d
>>
>> I get the following error:
>>
>> Internet Systems Consortium DHCP Server 4.2.5-P1
>> Copyright 2004-2013 Internet Systems Consortium.
>> All rights reserved.
>> For info, please visit https://www.isc.org/software/dhcp/
>> Wrote 0 leases to leases file.
>> Unsupported device type 32 for "ib0"
>>
>> If you did not get this software from ftp.isc.org, please
>> get the latest from ftp.isc.org and install that before
>> requesting help.
>>
>> If you did get this software from ftp.isc.org and have not
>> yet read the README, please read it before requesting help.
>> If you intend to request help from the dhcp-server at isc.org
>> mailing list, please read the section on the README about
>> submitting bug reports and requests for help.
>>
>> Please do not under any circumstances send requests for
>> help directly to the authors of this software - please
>> send them to the appropriate mailing list as described in
>> the README file.
>>
>> exiting.
>>
>> I thought the error might be on my part due to the configuration file,
>> but grepping through the source code for that error, in
>> file: dhcp-4.2/dhcp-4.2.5-P1/common/bpf.c
>>
>>                 case IFT_ETHER:
>>                         hw->hlen = sa->sdl_alen + 1;
>>                         hw->hbuf[0] = HTYPE_ETHER;
>>                         memcpy(&hw->hbuf[1], LLADDR(sa), sa->sdl_alen);
>>                         break;
>>                 case IFT_ISO88023:
>>                 case IFT_ISO88024: /* "token ring" */
>>                 case IFT_ISO88025:
>>                 case IFT_ISO88026:
>>                         hw->hlen = sa->sdl_alen + 1;
>>                         hw->hbuf[0] = HTYPE_IEEE802;
>>                         memcpy(&hw->hbuf[1], LLADDR(sa), sa->sdl_alen);
>>                         break;
>> #ifdef IFT_FDDI
>>                 case IFT_FDDI:
>>                         hw->hlen = sa->sdl_alen + 1;
>>                         hw->hbuf[0] = HTYPE_FDDI;
>>                         memcpy(&hw->hbuf[1], LLADDR(sa), sa->sdl_alen);
>>                         break;
>> #endif /* IFT_FDDI */
>>                 default:
>>                         log_fatal("Unsupported device type %d for \"%s\"",
>>                                   sa->sdl_type, name);
>>
>>
>> But nothing for Infiniband, even though HTYPE_INFINIBAND is defined in
>> the includes/ directory. Should I be using a different version of dhcp, or
>> is there some additional patch I need to apply.
>>
>>
>
> I sent out patches for this back on 4/23/11 ("Add support for DHCP over
> IPoIB per IETF RFC 4390") but they have not yet been incorporated into
> upstream ISC DHCP release. Those 2 patches were done against 4.2.1-P1 which
> was the latest at that time.
>
> -- Hal
>
>
>>
>>
>> Thanks,
>>
>> Malek
>>
>> _______________________________________________
>> dhcp-users mailing list
>> dhcp-users at lists.isc.org
>> https://lists.isc.org/mailman/listinfo/dhcp-users
>>
>
>
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