Re: [ovs-discuss] nx_reg_move and ofpat_set_field on arp op

2013-03-08 Thread Ben Pfaff
On Fri, Mar 08, 2013 at 09:55:41AM -0600, Saul St. John wrote: > On 03/07/2013 10:44 PM, Ben Pfaff wrote: > >On Thu, Mar 07, 2013 at 09:00:49PM -0600, Saul St. John wrote: > >>1) Is there a reason for not allowing this field as the target of > >>mangling actions? > >I don't know a good one. I gues

Re: [ovs-discuss] nx_reg_move and ofpat_set_field on arp op

2013-03-08 Thread Saul St. John
On 03/07/2013 10:44 PM, Ben Pfaff wrote: On Thu, Mar 07, 2013 at 09:00:49PM -0600, Saul St. John wrote: 1) Is there a reason for not allowing this field as the target of mangling actions? I don't know a good one. I guess that no one has implemented it, and that is probably because there has be

Re: [ovs-discuss] nx_reg_move and ofpat_set_field on arp op

2013-03-07 Thread Ben Pfaff
On Thu, Mar 07, 2013 at 09:00:49PM -0600, Saul St. John wrote: > I was trying to bit-twiddle ARP packets with NXAST_REG_MOVE actions, > when I found that NXM_OF_ARP_OP fields aren't writable. nicira-ext.h > doesn't explicitly call out unacceptable destinations, although > NXM_OF_ARP_OP isn't includ

[ovs-discuss] nx_reg_move and ofpat_set_field on arp op

2013-03-07 Thread Saul St. John
Hello! I was trying to bit-twiddle ARP packets with NXAST_REG_MOVE actions, when I found that NXM_OF_ARP_OP fields aren't writable. nicira-ext.h doesn't explicitly call out unacceptable destinations, although NXM_OF_ARP_OP isn't included on the list of acceptable dst. I am curious: 1) Is there a