[ovs-dev] [netlink 03/16] datapath: Merge "struct dp_port" into "struct vport".

Ben Pfaff blp at nicira.com
Fri Nov 5 17:35:15 UTC 2010


On Thu, Nov 04, 2010 at 05:28:36PM -0700, Jesse Gross wrote:
> On Thu, Nov 4, 2010 at 3:12 PM, Ben Pfaff <blp at nicira.com> wrote:
> >   I find network device synchronization kind of mystifying anyhow.
> 
> Generally speaking though, network device synchronization is based on
> refcounting, not RCU.  It's just that our netdev has a lot of moving
> pieces using RCU.

The particular part that confuses me is the skbuff 'dev' member.  It
doesn't correspond to a reference to the device that it points to.  This
must somehow be safe, but I don't know why.




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