[ovs-dev] Parse actions when received from FLOW_MOD message

[Ben Pfaff]

On Mon, Jan 26, 2015 at 05:48:59PM +0100, Raul Suarez Marin wrote:
> I am developing a new module for a controller, but I need to add an extra
> action to the openvswitch. I know that ovs 1.4 supports set-field actions,
> but that functionality does not work for me because I need to change data
> from the packet, not a header.
> 
> Currently, I'm stucked at function ofpact_from_openflow10 (ofp-actions.c).
> For example, SET_TP_DST has this structure:
> 
> case OFPUTIL_OFPAT10_SET_TP_DST:
>         ofpact_put_SET_L4_DST_PORT(out)->port = ntohs(a->tp_port.tp_port);
>         break;
> 
> I need to do something similar for my action, but... I do not know what
> does "ofpact_put_SET_L4_DST_PORT" or where it is defined
> "ofpact_put_SET_L4_DST_PORT". I'm not being able to find it.

Read lib/ofp-actions.h.