Hi Ben,
my 2c worth is that I agree that the stats are, at this time,
inherently inaccurate and that this patch is an improvement
over the current situation.
On Thu, Apr 03, 2014 at 08:46:38AM -0700, Ben Pfaff wrote:
> We have had inaccuracies in OpenFlow flow stats for similar reasons, for
> years, and it doesn't seem to bother people. I would like perfectly
> accurate stats, but no one yet has come up with an inexpensive way to do
> that. Given that, and because the existing stats are basically broken,
> I am inclined to accept Simon's approach. What do you think?
>
> On Thu, Apr 03, 2014 at 08:01:45PM +0900, YAMAMOTO Takashi wrote:
> > consider:
> >
> > 1. a datapath flow had hits
> > 2. the userland flow removed
> > 3. revalidation of the datapath flow failed
> >
> > with your patch, doesn't #3 count hits in #1 as misses?
> >
> > YAMAMOTO Takashi
> >
> > > Add per-table counters. This resolves some short-comings
> > > in the data provided in a table stats reply message.
> > >
> > > * Lookups and matches are calculated based on table
> > > accesses rather than datapath flow hits and misses.
> > >
> > > * Lookups and matches are credited to the table where they
> > > occurred rather than all being credited to table 0.
> > >
> > > These problems were observed when running make check-ryu
> > > and this patch allows many of its tester.py match checks
> > > to pass.
> > >
> > > Signed-off-by: Simon Horman <ho...@verge.net.au>
> > > ---
> > > ofproto/ofproto-dpif-xlate.c | 6 +-
> > > ofproto/ofproto-dpif.c | 42 +++++-----
> > > ofproto/ofproto-dpif.h | 5 +-
> > > ofproto/ofproto-provider.h | 3 +
> > > ofproto/ofproto.c | 2 +
> > > tests/ofproto-dpif.at | 195
> > > +++++++++++++++++++++++++++++++++++++++++++
> > > 6 files changed, 231 insertions(+), 22 deletions(-)
> > >
> > > diff --git a/ofproto/ofproto-dpif-xlate.c b/ofproto/ofproto-dpif-xlate.c
> > > index a6bfc87..49f138a 100644
> > > --- a/ofproto/ofproto-dpif-xlate.c
> > > +++ b/ofproto/ofproto-dpif-xlate.c
> > > @@ -1901,7 +1901,9 @@ xlate_table_action(struct xlate_ctx *ctx,
> > > ofp_port_t in_port, uint8_t table_id,
> > > !skip_wildcards
> > > ? &ctx->xout->wc : NULL,
> > > honor_table_miss,
> > > - &ctx->table_id, &rule);
> > > + &ctx->table_id,
> > > + ctx->xin->resubmit_stats,
> > > + &rule);
> > > ctx->xin->flow.in_port.ofp_port = old_in_port;
> > >
> > > if (ctx->xin->resubmit_hook) {
> > > @@ -3057,7 +3059,7 @@ xlate_actions__(struct xlate_in *xin, struct
> > > xlate_out *xout)
> > > if (!xin->ofpacts && !ctx.rule) {
> > > ctx.table_id = rule_dpif_lookup(ctx.xbridge->ofproto, flow,
> > > !xin->skip_wildcards ? wc : NULL,
> > > - &rule);
> > > + ctx.xin->resubmit_stats, &rule);
> > > if (ctx.xin->resubmit_stats) {
> > > rule_dpif_credit_stats(rule, ctx.xin->resubmit_stats);
> > > }
> > > diff --git a/ofproto/ofproto-dpif.c b/ofproto/ofproto-dpif.c
> > > index ee97707..f4d7399 100644
> > > --- a/ofproto/ofproto-dpif.c
> > > +++ b/ofproto/ofproto-dpif.c
> > > @@ -1407,25 +1407,20 @@ get_features(struct ofproto *ofproto_ OVS_UNUSED,
> > > }
> > >
> > > static void
> > > -get_tables(struct ofproto *ofproto_, struct ofp12_table_stats *ots)
> > > +get_tables(struct ofproto *ofproto, struct ofp12_table_stats *ots)
> > > {
> > > - struct ofproto_dpif *ofproto = ofproto_dpif_cast(ofproto_);
> > > - struct dpif_dp_stats s;
> > > - uint64_t n_miss, n_no_pkt_in, n_bytes, n_dropped_frags;
> > > - uint64_t n_lookup;
> > > - long long int used;
> > > + int i;
> > >
> > > strcpy(ots->name, "classifier");
> > >
> > > - dpif_get_dp_stats(ofproto->backer->dpif, &s);
> > > - rule_get_stats(&ofproto->miss_rule->up, &n_miss, &n_bytes, &used);
> > > - rule_get_stats(&ofproto->no_packet_in_rule->up, &n_no_pkt_in,
> > > &n_bytes,
> > > - &used);
> > > - rule_get_stats(&ofproto->drop_frags_rule->up, &n_dropped_frags,
> > > &n_bytes,
> > > - &used);
> > > - n_lookup = s.n_hit + s.n_missed - n_dropped_frags;
> > > - ots->lookup_count = htonll(n_lookup);
> > > - ots->matched_count = htonll(n_lookup - n_miss - n_no_pkt_in);
> > > + for (i = 0; i < ofproto->n_tables; i++) {
> > > + uint64_t missed, matched;
> > > +
> > > + atomic_read(&ofproto->tables[i].n_matched, &matched);
> > > + ots[i].matched_count = htonll(matched);
> > > + atomic_read(&ofproto->tables[i].n_missed, &missed);
> > > + ots[i].lookup_count = htonll(matched + missed);
> > > + }
> > > }
> > >
> > > static struct ofport *
> > > @@ -3082,14 +3077,15 @@ rule_dpif_get_actions(const struct rule_dpif
> > > *rule)
> > > * where misses occur. */
> > > uint8_t
> > > rule_dpif_lookup(struct ofproto_dpif *ofproto, const struct flow *flow,
> > > - struct flow_wildcards *wc, struct rule_dpif **rule)
> > > + struct flow_wildcards *wc, const struct dpif_flow_stats
> > > *stats,
> > > + struct rule_dpif **rule)
> > > {
> > > enum rule_dpif_lookup_verdict verdict;
> > > enum ofputil_port_config config = 0;
> > > uint8_t table_id = 0;
> > >
> > > verdict = rule_dpif_lookup_from_table(ofproto, flow, wc, true,
> > > - &table_id, rule);
> > > + &table_id, stats, rule);
> > >
> > > switch (verdict) {
> > > case RULE_DPIF_LOOKUP_VERDICT_MATCH:
> > > @@ -3188,7 +3184,9 @@ rule_dpif_lookup_from_table(struct ofproto_dpif
> > > *ofproto,
> > > const struct flow *flow,
> > > struct flow_wildcards *wc,
> > > bool honor_table_miss,
> > > - uint8_t *table_id, struct rule_dpif **rule)
> > > + uint8_t *table_id,
> > > + const struct dpif_flow_stats *stats,
> > > + struct rule_dpif **rule)
> > > {
> > > uint8_t next_id;
> > >
> > > @@ -3198,6 +3196,12 @@ rule_dpif_lookup_from_table(struct ofproto_dpif
> > > *ofproto,
> > > {
> > > *table_id = next_id;
> > > *rule = rule_dpif_lookup_in_table(ofproto, *table_id, flow, wc);
> > > + if (stats) {
> > > + struct oftable *tbl = &ofproto->up.tables[next_id];
> > > + atomic_uint64_t *stat = *rule ? &tbl->n_matched :
> > > &tbl->n_missed;
> > > + uint64_t orig;
> > > + atomic_add(stat, stats->n_packets, &orig);
> > > + }
> > > if (*rule) {
> > > return RULE_DPIF_LOOKUP_VERDICT_MATCH;
> > > } else if (!honor_table_miss) {
> > > @@ -4051,7 +4055,7 @@ ofproto_trace(struct ofproto_dpif *ofproto, const
> > > struct flow *flow,
> > > if (ofpacts) {
> > > rule = NULL;
> > > } else {
> > > - rule_dpif_lookup(ofproto, flow, &trace.wc, &rule);
> > > + rule_dpif_lookup(ofproto, flow, &trace.wc, 0, &rule);
> > >
> > > trace_format_rule(ds, 0, rule);
> > > if (rule == ofproto->miss_rule) {
> > > diff --git a/ofproto/ofproto-dpif.h b/ofproto/ofproto-dpif.h
> > > index 088ff89..3fa8f29 100644
> > > --- a/ofproto/ofproto-dpif.h
> > > +++ b/ofproto/ofproto-dpif.h
> > > @@ -78,13 +78,16 @@ extern struct ovs_rwlock xlate_rwlock;
> > > size_t ofproto_dpif_get_max_mpls_depth(const struct ofproto_dpif *);
> > >
> > > uint8_t rule_dpif_lookup(struct ofproto_dpif *, const struct flow *,
> > > - struct flow_wildcards *, struct rule_dpif
> > > **rule);
> > > + struct flow_wildcards *,
> > > + const struct dpif_flow_stats *,
> > > + struct rule_dpif **rule);
> > >
> > > enum rule_dpif_lookup_verdict rule_dpif_lookup_from_table(struct
> > > ofproto_dpif *,
> > > const struct
> > > flow *,
> > > struct
> > > flow_wildcards *,
> > > bool
> > > force_controller_on_miss,
> > > uint8_t
> > > *table_id,
> > > + const struct
> > > dpif_flow_stats *,
> > > struct
> > > rule_dpif **rule);
> > >
> > > void rule_dpif_ref(struct rule_dpif *);
> > > diff --git a/ofproto/ofproto-provider.h b/ofproto/ofproto-provider.h
> > > index a7bf4df..317be49 100644
> > > --- a/ofproto/ofproto-provider.h
> > > +++ b/ofproto/ofproto-provider.h
> > > @@ -264,6 +264,9 @@ struct oftable {
> > >
> > > /* Table config: contains enum ofp_table_config; accessed
> > > atomically. */
> > > atomic_uint config;
> > > +
> > > + atomic_uint64_t n_matched;
> > > + atomic_uint64_t n_missed;
> > > };
> > >
> > > /* Assigns TABLE to each oftable, in turn, in OFPROTO.
> > > diff --git a/ofproto/ofproto.c b/ofproto/ofproto.c
> > > index 80336de..ac3a093 100644
> > > --- a/ofproto/ofproto.c
> > > +++ b/ofproto/ofproto.c
> > > @@ -6679,6 +6679,8 @@ oftable_init(struct oftable *table)
> > > classifier_init(&table->cls, flow_segment_u32s);
> > > table->max_flows = UINT_MAX;
> > > atomic_init(&table->config, (unsigned
> > > int)OFPTC11_TABLE_MISS_CONTROLLER);
> > > + atomic_init(&table->n_matched, 0);
> > > + atomic_init(&table->n_missed, 0);
> > > }
> > >
> > > /* Destroys 'table', including its classifier and eviction groups.
> > > diff --git a/tests/ofproto-dpif.at b/tests/ofproto-dpif.at
> > > index d2234e9..890bcb4 100644
> > > --- a/tests/ofproto-dpif.at
> > > +++ b/tests/ofproto-dpif.at
> > > @@ -4330,3 +4330,198 @@ AT_CHECK([grep -c 'resubmits yielded over 64 kB
> > > of stack' ovs-vswitchd.log], [0]
> > > ])
> > > OVS_VSWITCHD_STOP(["/resubmits yielded over 64 kB of stack/d"])
> > > AT_CLEANUP
> > > +
> > > +
> > > +AT_SETUP([ofproto-if packet-out controller])
> > > +OVS_VSWITCHD_START
> > > +ADD_OF_PORTS([br0], 1, 2)
> > > +
> > > +AT_CHECK([ovs-ofctl add-flow br0 'dl_dst=50:54:00:00:00:0a
> > > actions=controller'])
> > > +
> > > +AT_CAPTURE_FILE([ofctl_monitor.log])
> > > +AT_CHECK([ovs-ofctl monitor br0 65534 invalid_ttl --detach --no-chdir
> > > --pidfile 2> ofctl_monitor.log])
> > > +
> > > +for i in 1 2 3; do
> > > + AT_CHECK([ovs-ofctl -O OpenFlow13 packet-out br0 CONTROLLER controller
> > > '50540000000a5054000000091234'])
> > > +done
> > > +
> > > +OVS_WAIT_UNTIL([ovs-appctl -t ovs-ofctl exit])
> > > +AT_CHECK([cat ofctl_monitor.log], [0], [dnl
> > > +NXT_PACKET_IN (xid=0x0): total_len=14 in_port=CONTROLLER (via action)
> > > data_len=14 (unbuffered)
> > > +metadata=0,in_port=0,vlan_tci=0x0000,dl_src=50:54:00:00:00:09,dl_dst=50:54:00:00:00:0a,dl_type=0x1234
> > > +dnl
> > > +NXT_PACKET_IN (xid=0x0): total_len=14 in_port=CONTROLLER (via action)
> > > data_len=14 (unbuffered)
> > > +metadata=0,in_port=0,vlan_tci=0x0000,dl_src=50:54:00:00:00:09,dl_dst=50:54:00:00:00:0a,dl_type=0x1234
> > > +dnl
> > > +NXT_PACKET_IN (xid=0x0): total_len=14 in_port=CONTROLLER (via action)
> > > data_len=14 (unbuffered)
> > > +metadata=0,in_port=0,vlan_tci=0x0000,dl_src=50:54:00:00:00:09,dl_dst=50:54:00:00:00:0a,dl_type=0x1234
> > > +])
> > > +
> > > +AT_CHECK([ovs-ofctl dump-flows br0 | ofctl_strip | sort], [0], [dnl
> > > + dl_dst=50:54:00:00:00:0a actions=CONTROLLER:65535
> > > +NXST_FLOW reply:
> > > +])
> > > +
> > > +(echo "OFPST_TABLE reply (OF1.3) (xid=0x2): 254 tables"
> > > + echo " 0: active=1, lookup=0, matched=0"
> > > + x=1
> > > + while test $x -lt 254; do
> > > + echo " $x: active=0, lookup=0, matched=0"
> > > + x=`expr $x + 1`
> > > + done) > expout
> > > +AT_CHECK([ovs-ofctl -O OpenFlow13 dump-tables br0 ], [0], [expout])
> > > +
> > > +OVS_VSWITCHD_STOP
> > > +AT_CLEANUP
> > > +
> > > +
> > > +AT_SETUP([ofproto-if packet-out controller (patch port)])
> > > +OVS_VSWITCHD_START(
> > > + [-- \
> > > + add-port br0 p1 -- \
> > > + set interface p1 type=patch options:peer=p2 -- \
> > > + add-br br1 -- \
> > > + set bridge br1 datapath-type=dummy -- \
> > > + set bridge br1 fail-mode=secure -- \
> > > + set bridge br1
> > > protocols='[OpenFlow10,OpenFlow11,OpenFlow12,OpenFlow13]' -- \
> > > + add-port br1 p2 -- \
> > > + set interface p2 type=patch options:peer=p1 --])
> > > +
> > > +AT_CAPTURE_FILE([ofctl_monitor.log])
> > > +AT_CHECK([ovs-ofctl monitor br1 65534 invalid_ttl --detach --no-chdir
> > > --pidfile 2> ofctl_monitor.log])
> > > +
> > > +for i in 1 2 3; do
> > > + AT_CHECK([ovs-ofctl -O OpenFlow13 packet-out br0 CONTROLLER output:1
> > > '50540000000a5054000000091234'])
> > > +done
> > > +
> > > +OVS_WAIT_UNTIL([ovs-appctl -t ovs-ofctl exit])
> > > +AT_CHECK([cat ofctl_monitor.log], [0], [dnl
> > > +NXT_PACKET_IN (xid=0x0): cookie=0x0 total_len=14 in_port=1 (via
> > > no_match) data_len=14 (unbuffered)
> > > +metadata=0,in_port=0,vlan_tci=0x0000,dl_src=50:54:00:00:00:09,dl_dst=50:54:00:00:00:0a,dl_type=0x1234
> > > +dnl
> > > +NXT_PACKET_IN (xid=0x0): cookie=0x0 total_len=14 in_port=1 (via
> > > no_match) data_len=14 (unbuffered)
> > > +metadata=0,in_port=0,vlan_tci=0x0000,dl_src=50:54:00:00:00:09,dl_dst=50:54:00:00:00:0a,dl_type=0x1234
> > > +dnl
> > > +NXT_PACKET_IN (xid=0x0): cookie=0x0 total_len=14 in_port=1 (via
> > > no_match) data_len=14 (unbuffered)
> > > +metadata=0,in_port=0,vlan_tci=0x0000,dl_src=50:54:00:00:00:09,dl_dst=50:54:00:00:00:0a,dl_type=0x1234
> > > +])
> > > +
> > > +(echo "OFPST_TABLE reply (OF1.3) (xid=0x2): 254 tables"
> > > + x=0
> > > + while test $x -lt 254; do
> > > + echo " $x: active=0, lookup=0, matched=0"
> > > + x=`expr $x + 1`
> > > + done) > expout
> > > +AT_CHECK([ovs-ofctl -O OpenFlow13 dump-tables br0 ], [0], [expout])
> > > +
> > > +(echo "OFPST_TABLE reply (OF1.3) (xid=0x2): 254 tables"
> > > + echo " 0: active=0, lookup=3, matched=0"
> > > + x=1
> > > + while test $x -lt 254; do
> > > + echo " $x: active=0, lookup=0, matched=0"
> > > + x=`expr $x + 1`
> > > + done) > expout
> > > +AT_CHECK([ovs-ofctl -O OpenFlow13 dump-tables br1 ], [0], [expout])
> > > +
> > > +OVS_VSWITCHD_STOP
> > > +AT_CLEANUP
> > > +
> > > +
> > > +AT_SETUP([ofproto-if packet-out goto_table])
> > > +OVS_VSWITCHD_START
> > > +ADD_OF_PORTS([br0], 1, 2)
> > > +
> > > +AT_DATA([flows.txt], [dnl
> > > +table=0 dl_dst=50:54:00:00:00:0a actions=goto_table(1)
> > > +table=1 dl_dst=50:54:00:00:00:0a actions=controller
> > > +])
> > > +AT_CHECK([ovs-ofctl -O OpenFlow13 add-flows br0 flows.txt])
> > > +
> > > +AT_CAPTURE_FILE([ofctl_monitor.log])
> > > +AT_CHECK([ovs-ofctl monitor br0 65534 invalid_ttl --detach --no-chdir
> > > --pidfile 2> ofctl_monitor.log])
> > > +
> > > +for i in 1 2 3; do
> > > + ovs-appctl netdev-dummy/receive p1
> > > 'in_port(1),eth(src=50:54:00:00:00:09,dst=50:54:00:00:00:0a),eth_type(0x1234)'
> > > +done
> > > +
> > > +OVS_WAIT_UNTIL([test `wc -l < ofctl_monitor.log` -ge 6])
> > > +OVS_WAIT_UNTIL([ovs-appctl -t ovs-ofctl exit])
> > > +AT_CHECK([cat ofctl_monitor.log], [0], [dnl
> > > +NXT_PACKET_IN (xid=0x0): table_id=1 cookie=0x0 total_len=60 in_port=1
> > > (via action) data_len=60 (unbuffered)
> > > +metadata=0,in_port=0,vlan_tci=0x0000,dl_src=50:54:00:00:00:09,dl_dst=50:54:00:00:00:0a,dl_type=0x1234
> > > +dnl
> > > +NXT_PACKET_IN (xid=0x0): table_id=1 cookie=0x0 total_len=60 in_port=1
> > > (via action) data_len=60 (unbuffered)
> > > +metadata=0,in_port=0,vlan_tci=0x0000,dl_src=50:54:00:00:00:09,dl_dst=50:54:00:00:00:0a,dl_type=0x1234
> > > +dnl
> > > +NXT_PACKET_IN (xid=0x0): table_id=1 cookie=0x0 total_len=60 in_port=1
> > > (via action) data_len=60 (unbuffered)
> > > +metadata=0,in_port=0,vlan_tci=0x0000,dl_src=50:54:00:00:00:09,dl_dst=50:54:00:00:00:0a,dl_type=0x1234
> > > +])
> > > +
> > > +AT_CHECK([ovs-appctl time/warp 5000], [0], [ignore])
> > > +
> > > +AT_CHECK([ovs-ofctl -O OpenFlow13 dump-flows br0 | ofctl_strip | sort],
> > > [0], [dnl
> > > + n_packets=3, n_bytes=180, dl_dst=50:54:00:00:00:0a actions=goto_table:1
> > > + table=1, n_packets=3, n_bytes=180, dl_dst=50:54:00:00:00:0a
> > > actions=CONTROLLER:65535
> > > +OFPST_FLOW reply (OF1.3):
> > > +])
> > > +
> > > +(echo "OFPST_TABLE reply (OF1.3) (xid=0x2): 254 tables"
> > > + echo " 0: active=1, lookup=3, matched=3"
> > > + echo " 1: active=1, lookup=3, matched=3"
> > > + x=2
> > > + while test $x -lt 254; do
> > > + echo " $x: active=0, lookup=0, matched=0"
> > > + x=`expr $x + 1`
> > > + done) > expout
> > > +AT_CHECK([ovs-ofctl -O OpenFlow13 dump-tables br0 ], [0], [expout])
> > > +
> > > +OVS_VSWITCHD_STOP
> > > +AT_CLEANUP
> > > +
> > > +
> > > +AT_SETUP([ofproto-if packet-out table-miss (continue)])
> > > +OVS_VSWITCHD_START
> > > +ADD_OF_PORTS([br0], 1, 2)
> > > +
> > > +AT_CHECK([ovs-ofctl -O OpenFlow13 add-flow br0 'table=1
> > > dl_dst=50:54:00:00:00:0a actions=controller'])
> > > +AT_CHECK([ovs-ofctl -O OpenFlow13 mod-table br0 all continue])
> > > +
> > > +AT_CAPTURE_FILE([ofctl_monitor.log])
> > > +AT_CHECK([ovs-ofctl monitor br0 65534 invalid_ttl --detach --no-chdir
> > > --pidfile 2> ofctl_monitor.log])
> > > +
> > > +for i in 1 2 3; do
> > > + ovs-appctl netdev-dummy/receive p1
> > > 'in_port(1),eth(src=50:54:00:00:00:09,dst=50:54:00:00:00:0a),eth_type(0x1234)'
> > > +done
> > > +
> > > +OVS_WAIT_UNTIL([test `wc -l < ofctl_monitor.log` -ge 6])
> > > +OVS_WAIT_UNTIL([ovs-appctl -t ovs-ofctl exit])
> > > +AT_CHECK([cat ofctl_monitor.log], [0], [dnl
> > > +NXT_PACKET_IN (xid=0x0): table_id=1 cookie=0x0 total_len=60 in_port=1
> > > (via action) data_len=60 (unbuffered)
> > > +metadata=0,in_port=0,vlan_tci=0x0000,dl_src=50:54:00:00:00:09,dl_dst=50:54:00:00:00:0a,dl_type=0x1234
> > > +dnl
> > > +NXT_PACKET_IN (xid=0x0): table_id=1 cookie=0x0 total_len=60 in_port=1
> > > (via action) data_len=60 (unbuffered)
> > > +metadata=0,in_port=0,vlan_tci=0x0000,dl_src=50:54:00:00:00:09,dl_dst=50:54:00:00:00:0a,dl_type=0x1234
> > > +dnl
> > > +NXT_PACKET_IN (xid=0x0): table_id=1 cookie=0x0 total_len=60 in_port=1
> > > (via action) data_len=60 (unbuffered)
> > > +metadata=0,in_port=0,vlan_tci=0x0000,dl_src=50:54:00:00:00:09,dl_dst=50:54:00:00:00:0a,dl_type=0x1234
> > > +])
> > > +
> > > +AT_CHECK([ovs-appctl time/warp 5000], [0], [ignore])
> > > +
> > > +AT_CHECK([ovs-ofctl -O OpenFlow13 dump-flows br0 | ofctl_strip | sort],
> > > [0], [dnl
> > > + table=1, n_packets=3, n_bytes=180, dl_dst=50:54:00:00:00:0a
> > > actions=CONTROLLER:65535
> > > +OFPST_FLOW reply (OF1.3):
> > > +])
> > > +
> > > +(echo "OFPST_TABLE reply (OF1.3) (xid=0x2): 254 tables"
> > > + echo " 0: active=0, lookup=3, matched=0"
> > > + echo " 1: active=1, lookup=3, matched=3"
> > > + x=2
> > > + while test $x -lt 254; do
> > > + echo " $x: active=0, lookup=0, matched=0"
> > > + x=`expr $x + 1`
> > > + done) > expout
> > > +AT_CHECK([ovs-ofctl -O OpenFlow13 dump-tables br0 ], [0], [expout])
> > > +
> > > +OVS_VSWITCHD_STOP
> > > +AT_CLEANUP
> > > --
> > > 1.8.5.2
> > >
> > > _______________________________________________
> > > dev mailing list
> > > dev@openvswitch.org
> > > http://openvswitch.org/mailman/listinfo/dev
>
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