[ovs-dev] GDB macro's for Open vSwitch

Eelco Chaudron echaudro at redhat.com
Thu Apr 26 09:24:34 UTC 2018


On 25/04/18 21:42, Ben Pfaff wrote:
> On Wed, Apr 25, 2018 at 06:12:03PM +0200, Eelco Chaudron wrote:
>> Hi All,
>>
>> I could not find any GDB macros or commands in the OVS project, and as I was
>> debugging some vague crash I started to create some.
>>
>> As I was trying to do this while debugging I copied some code from the Linux
>> debug commands, so I had to use the same GPL2 license.
>>
>> You can find the commands on GitHub,
>> https://github.com/chaudron/gdb_commands/blob/master/ovs_GDB.py
>>
>> I'm ok with including them in the OVS distribution if others find them
>> useful, but not sure how this works with the GPL2 license.
>>
>> The commands added to GDB are:
>>
>> - ovs_dump_bridge [ports|wanted]
>> - ovs_dump_bridge_ports <struct bridge *>
>> - ovs_dump_dp_netdev [ports]
>> - ovs_dump_dp_netdev_ports <struct dp_netdev *>
>> - ovs_dump_netdev
> This sounds useful.  I don't think that the GPL license should be a big
> deal because GDB macros are not linked against C code.  It seems like a
> clear case of "mere aggregation" to me.
>
> Would you like to submit a patch to add these to the tree?  Ideally, you
> could add some documentation as well (probably adding what you put in
> the commit message to the tree).

I'm on PTO (almost) without internet next week, but I'll send a patch 
when I get back including some documentation.

//Eelco



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