Uday, ofproto-dpif-upcall.c calls into ofproto-dpif-xlate.c that performs flow lookups and thereby find the actions that should be applied to the packet. For example, action types are discerned in do_xlate_actions(). The “normal” action is actually a special port number (OFPP_NORMAL) and is processed by late_output_action().
To see the flow lookups and action processing in action, you should get familiar with “ovs-appctl ofproto/trace”. You can find numerous examples by: $ cd tests $ git grep “ofproto/trace” Regards, Jarno > On Aug 7, 2015, at 7:57 AM, <ravulakollu.ku...@wipro.com> > <ravulakollu.ku...@wipro.com> wrote: > > Hi Team, > > I am debugging upcall processing in ofproto-dpif-upcall.c file . I am not > able to visualize how opfbuf structure is being > filled with actions(Note: My bridge is configured without OF rules, meaning > actions=NORMAL). > I could see packet is being flooded for unknown mac, vlan in the code. But > somehow dpif_netlink_operate is receiving proper netlink action > attributes in sequence to be executed in DP. > Also I could see in gdb xout.odp_actions is only holding some addresses. How > to know what actually resides in this address. > (gdb) p upcall->xout.odp_actions->data > $7 = (void *) 0x7f6275a53398 > > Could someone please , let me know how this buffer is being filled, and what > is the importance of ofpbuf. > > Thanks in Advance, > Uday > The information contained in this electronic message and any attachments to > this message are intended for the exclusive use of the addressee(s) and may > contain proprietary, confidential or privileged information. If you are not > the intended recipient, you should not disseminate, distribute or copy this > e-mail. Please notify the sender immediately and destroy all copies of this > message and any attachments. WARNING: Computer viruses can be transmitted via > email. The recipient should check this email and any attachments for the > presence of viruses. The company accepts no liability for any damage caused > by any virus transmitted by this email. www.wipro.com > _______________________________________________ > dev mailing list > dev@openvswitch.org > http://openvswitch.org/mailman/listinfo/dev _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
