If iface does not exist  when qos I+P is run the first time
a qos queue is still created and qos I+P will never apply qos to OVS
qos might still be applied later, if/when (for any reason) runtime_date must be 
recomputed

Fixes: 7d1d111ff213 ("controller: configure qos through ovs qos table and do 
not run tc directly")
Signed-off-by: Xavier Simonart <[email protected]>
---
 controller/binding.c | 28 +++++++++++++++-------------
 tests/ovn.at         |  7 +++++++
 2 files changed, 22 insertions(+), 13 deletions(-)

diff --git a/controller/binding.c b/controller/binding.c
index f2896a9c9..8a0a24b95 100644
--- a/controller/binding.c
+++ b/controller/binding.c
@@ -362,7 +362,7 @@ configure_qos(const struct sbrec_port_binding *pb,
     struct qos_queue *q = find_qos_queue(b_ctx_out->qos_map, hash,
                                          pb->logical_port);
     if (!q || q->min_rate != min_rate || q->max_rate != max_rate ||
-        q->burst != burst) {
+        q->burst != burst || strcmp(network, q->network)) {
         struct shash bridge_mappings = SHASH_INITIALIZER(&bridge_mappings);
         add_ovs_bridge_mappings(b_ctx_in->ovs_table, b_ctx_in->bridge_table,
                                 &bridge_mappings);
@@ -378,22 +378,24 @@ configure_qos(const struct sbrec_port_binding *pb,
             add_ovs_qos_table_entry(b_ctx_in->ovs_idl_txn, port, min_rate,
                                     max_rate, burst, queue_id,
                                     pb->logical_port);
+            if (!q) {
+                q = xzalloc(sizeof *q);
+                hmap_insert(b_ctx_out->qos_map, &q->node, hash);
+                q->port = xstrdup(pb->logical_port);
+                q->queue_id = queue_id;
+            }
+            free(q->network);
+            q->network = network ? xstrdup(network) : NULL;
+            q->min_rate = min_rate;
+            q->max_rate = max_rate;
+            q->burst = burst;
+        } else {
+            static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 1);
+            VLOG_DBG_RL(&rl, "no iface => no entries added on qos_table");
         }
         shash_destroy(&bridge_mappings);
     }
 
-    if (!q) {
-        q = xzalloc(sizeof *q);
-        hmap_insert(b_ctx_out->qos_map, &q->node, hash);
-        q->port = xstrdup(pb->logical_port);
-        q->queue_id = queue_id;
-    }
-
-    free(q->network);
-    q->network = network ? xstrdup(network) : NULL;
-    q->min_rate = min_rate;
-    q->max_rate = max_rate;
-    q->burst = burst;
 }
 
 static const struct ovsrec_queue *
diff --git a/tests/ovn.at b/tests/ovn.at
index 05bf7fa5b..70ce91d26 100644
--- a/tests/ovn.at
+++ b/tests/ovn.at
@@ -36089,6 +36089,7 @@ check ovn-nbctl ls-add ls1
 check ovn-nbctl lsp-add ls1 public1
 check ovn-nbctl lsp-set-addresses public1 unknown
 check ovn-nbctl lsp-set-type public1 localnet
+check ovn-nbctl lsp-set-options public1 network_name=phys
 
 check ovn-nbctl lsp-add ls1 lsp5
 check ovn-nbctl lsp-set-addresses lsp5 f0:00:00:00:00:05
@@ -36098,6 +36099,12 @@ ovs-vsctl add-port br-int vif5 -- \
     ofport-request=5
 OVS_WAIT_UNTIL([test x`ovn-nbctl lsp-get-up lsp5` = xup])
 
+# Delete and add back public1
+check ovn-nbctl --wait=hv lsp-del public1
+check ovn-nbctl lsp-add ls1 public1
+check ovn-nbctl lsp-set-addresses public1 unknown
+check ovn-nbctl lsp-set-type public1 localnet
+
 check ovn-nbctl set Logical_Switch_Port public1 options:qos_min_rate=6000000000
 check ovn-nbctl set Logical_Switch_Port public1 options:qos_max_rate=7000000000
 check ovn-nbctl set Logical_Switch_Port public1 options:qos_burst=8000000000
-- 
2.31.1

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