[ovs-dev] L4 port range to bitwise matches

[Ben Pfaff]

On Thu, May 05, 2016 at 12:45:49AM +0200, ibrahim menem wrote:
> Would it be interesting to have a "port to bitwise matches" conversion
> functionality integrated to OVS command line utilities?  something like :
> 
> [ibra at ibrapc tutorial]$ ovs-ofctl port-range-to-masks 1000 1999
> 0x3e8/0xfff8
> 0x3f0/0xfff0
> 0x400/0xfe00
> 0x600/0xff00
> 0x700/0xff80
> 0x780/0xffc0
> 0x7c0/0xfff0
> 
> If it is interesting, do you suggest any cleaner place for it?

It's already available.  Possibly it could use some improvement for
double-ended ranges:

    blp at sigabrt:~/nicira/ovs/_build(0)$ echo 'ip4 && 1000 <= tcp.src <= 1999' | tests/ovstest test-ovn expr-to-flows
    tcp,tp_src=1001
    tcp,tp_src=0x7c0/0xfff8
    tcp,tp_src=1999
    tcp,tp_src=1998
    tcp,tp_src=0x7cc/0xfffe
    tcp,tp_src=0x3ea/0xfffe
    tcp,tp_src=0x700/0xff80
    tcp,tp_src=0x780/0xffc0
    tcp,tp_src=1000
    tcp,tp_src=0x3ec/0xfffc
    tcp,tp_src=0x600/0xff00
    tcp,tp_src=0x400/0xfe00
    tcp,tp_src=0x7c8/0xfffc
    tcp,tp_src=0x3f0/0xfff0