[Bug libc/6589] New: getifaddrs returns entries with invalid ifa_name

[Bug libc/6589] New: getifaddrs returns entries with invalid ifa_name

[vinay at linux dot vnet dot ibm dot com]

On a system with ipv6 interfaces of Infiniband devices, getifaddrs returns
interface names for the ib entries as junk. The reason for this is that the
sockaddr_ll structure fails to accommodate 20 byte IB device addresses. By
extending the sll_addr field (currently 8 bytes) to 24 bytes, the issue is solved.

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           Summary: getifaddrs returns entries with invalid ifa_name
           Product: glibc
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: libc
        AssignedTo: drepper at redhat dot com
        ReportedBy: vinay at linux dot vnet dot ibm dot com
                CC: glibc-bugs at sources dot redhat dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=6589

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[Bug libc/6589] getifaddrs returns entries with invalid ifa_name

[vinay at linux dot vnet dot ibm dot com]

------- Additional Comments From vinay at linux dot vnet dot ibm dot com  2008-06-04 08:55 -------
Created an attachment (id=2773)
 --> (http://sourceware.org/bugzilla/attachment.cgi?id=2773&action=view)
Patch to add support for infiniband device addresses


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[Bug libc/6589] getifaddrs returns entries with invalid ifa_name

[vinay at linux dot vnet dot ibm dot com]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |suzuki at in dot ibm dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=6589

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[Bug libc/6589] getifaddrs returns entries with invalid ifa_name

[drepper at redhat dot com]

------- Additional Comments From drepper at redhat dot com  2008-06-13 06:18 -------
This does not work.

First, the kernel defines the structure exactly as we do.

Second, changing this structure changes the ABI.

How does the kernel deal with this?

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           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |WAITING


http://sourceware.org/bugzilla/show_bug.cgi?id=6589

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[Bug libc/6589] getifaddrs returns entries with invalid ifa_name

[vinay at linux dot vnet dot ibm dot com]

------- Additional Comments From vinay at linux dot vnet dot ibm dot com  2008-06-19 07:54 -------
Ulrich, 

I came across this thread that describes how the kernel handles 
device addresses > 8 bytes ::
http://lists.openfabrics.org/pipermail/general/2005-September/010986.html

Thanks,
Vinay

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[Bug libc/6589] getifaddrs returns entries with invalid ifa_name

[vinay at linux dot vnet dot ibm dot com]

------- Additional Comments From vinay at linux dot vnet dot ibm dot com  2008-07-22 11:18 -------
Ulrich,

Any update with regard to the proposed fix? 

Thanks,
Vinay

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http://sourceware.org/bugzilla/show_bug.cgi?id=6589

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[Bug libc/6589] getifaddrs returns entries with invalid ifa_name

[drepper at redhat dot com]

------- Additional Comments From drepper at redhat dot com  2008-08-13 06:58 -------
I have no way to test it but I hope it's fixed in cvs.  Reopen if necessary with
detailed description of the problem.

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           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |RESOLVED
         Resolution|                            |FIXED


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[Bug libc/6589] getifaddrs returns entries with invalid ifa_name

[vinay at linux dot vnet dot ibm dot com]

------- Additional Comments From vinay at linux dot vnet dot ibm dot com  2008-08-14 08:52 -------
(In reply to comment #5)
> I have no way to test it but I hope it's fixed in cvs.  Reopen if necessary with
> detailed description of the problem.

Tested with cvs. Yes, its fixed.

Thanks,
Vinay

-- 


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