[ovs-dev] [PATCH 09/41] ofp-util: Prepare Packet Out decoder for other Open Flow versions
Simon Horman
horms at verge.net.au
Wed Aug 8 23:56:10 UTC 2012
On Wed, Aug 08, 2012 at 04:42:30PM -0700, Ben Pfaff wrote:
> On Wed, Aug 08, 2012 at 06:49:44AM +0900, Simon Horman wrote:
> > Signed-off-by: Simon Horman <horms at verge.net.au>
> > {
> > - const struct ofp_packet_out *opo;
> > - enum ofperr error;
> > enum ofpraw raw;
> > struct ofpbuf b;
> > + enum ofperr bad_in_port_err = OFPERR_OFPET_BAD_REQUEST;
> >
> > ofpbuf_use_const(&b, oh, ntohs(oh->length));
> > raw = ofpraw_pull_assert(&b);
> > - assert(raw == OFPRAW_OFPT10_PACKET_OUT);
> >
> > - opo = ofpbuf_pull(&b, sizeof *opo);
> > - po->buffer_id = ntohl(opo->buffer_id);
> > - po->in_port = ntohs(opo->in_port);
> > + if (raw == OFPRAW_OFPT10_PACKET_OUT) {
> > + enum ofperr error;
> > + const struct ofp_packet_out *opo = ofpbuf_pull(&b, sizeof *opo);
> > +
> > + po->buffer_id = ntohl(opo->buffer_id);
> > + po->in_port = ntohs(opo->in_port);
> > +
> > + error = ofpacts_pull_openflow10(&b, ntohs(opo->actions_len), ofpacts);
> > + if (error) {
> > + return error;
> > + }
> > + bad_in_port_err = OFPERR_NXBRC_BAD_IN_PORT;
> > + } else {
> > + NOT_REACHED();
> > + }
>
> I think that we should consistently use OFPERR_NXBRC_BAD_IN_PORT.
> OFPERR_OFPET_BAD_REQUEST isn't a good substitute because it isn't
> encodable as an error at all (it is an error category, not an error
> itself).
>
> If there's a better choice for a standard error code in some OpenFlow
> version then I'm happy to use that.
I'm comfortable with using OFPERR_NXBRC_BAD_IN_PORT if you are.
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