[ovs-dev] [PATCH ovn] Rely on unique name for ovn qos meters

Lorenzo Bianconi lorenzo.bianconi at redhat.com
Fri Apr 24 13:32:44 UTC 2020


ovn currently identifies qos meters according to the rate and burst values
configured. Doing so 2 meters on the same hv assigned to 2 different logical
switch ports and configured with the same values for rate and burst will be
mapped to the same ovs kernel mater and will share the bandwidth.
Fix this behavior making qos meter name unique

Tested-By: Maciej Jozefczyk <mjozefcz at redhat.com>
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi at redhat.com>
---
 controller/ofctrl.c |  2 +-
 lib/actions.c       | 11 ++++++-----
 2 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/controller/ofctrl.c b/controller/ofctrl.c
index 36e39ba06..485a857d1 100644
--- a/controller/ofctrl.c
+++ b/controller/ofctrl.c
@@ -970,7 +970,7 @@ add_meter_string(struct ovn_extend_table_info *m_desired,
     enum ofputil_protocol usable_protocols;
     char *meter_string = xasprintf("meter=%"PRIu32",%s",
                                    m_desired->table_id,
-                                   &m_desired->name[9]);
+                                   &m_desired->name[52]);
     char *error = parse_ofp_meter_mod_str(&mm, meter_string, OFPMC13_ADD,
                                           &usable_protocols);
     if (!error) {
diff --git a/lib/actions.c b/lib/actions.c
index deca18842..20a7a5caf 100644
--- a/lib/actions.c
+++ b/lib/actions.c
@@ -2851,12 +2851,13 @@ encode_SET_METER(const struct ovnact_set_meter *cl,
      * describes the meter itself. */
     char *name;
     if (cl->burst) {
-        name = xasprintf("__string: kbps burst stats bands=type=drop "
-                         "rate=%"PRId64" burst_size=%"PRId64"", cl->rate,
-                         cl->burst);
+        name = xasprintf("__string: uuid "UUID_FMT" kbps burst stats "
+                         "bands=type=drop rate=%"PRId64" burst_size=%"PRId64,
+                         UUID_ARGS(&ep->lflow_uuid), cl->rate, cl->burst);
     } else {
-        name = xasprintf("__string: kbps stats bands=type=drop "
-                         "rate=%"PRId64"", cl->rate);
+        name = xasprintf("__string: uuid "UUID_FMT" kbps stats "
+                         "bands=type=drop rate=%"PRId64,
+                         UUID_ARGS(&ep->lflow_uuid), cl->rate);
     }
 
     table_id = ovn_extend_table_assign_id(ep->meter_table, name,
-- 
2.25.3



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