[ovs-discuss] a question about xlate_actions

[danderson415]

On Mon, Oct 31, 2011 at 9:13 AM, Ben Pfaff <blp at nicira.com> wrote:

> On Sat, Oct 29, 2011 at 01:09:17PM -0700, danderson415 wrote:
> > I am reading ovs code(1.1.0pre2). In ofproto.c function xlate_actions(),
> it
> > translates ofp actions to odp actions. What I am confused about is why it
> > set the fields in rule.cr.flow? I think rule.cr.flow stores the flow key
> > for match, not actions. Can someone shed some light?
>
> 1.1.0pre2 is pretty old.  I'd upgrade to 1.2.2, at least.
>
> I don't think that it updates rule->cr.flow.  That would be a bug,
> since it would be modifying the key data used for matching.  It does
> update ctx->flow, a copy of rule->cr.flow.  The main reason for that
> is to keep track of the current flow so that if a resubmit action
> comes along we know what to look up.  There might be other reasons
> too, but that's the one that comes to mind immediately.
>

Thanks. Yes, only the copy in ctx is modified.
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