[ovs-dev] [PATCH v10 4/9] Persist local_datapaths

Ryan Moats rmoats at us.ibm.com
Thu Mar 24 15:29:59 UTC 2016


From: RYAN D. MOATS <rmoats at us.ibm.com>

Persist local_datapaths across runs so that a change can be used
as a trigger to reset incremental flow processing.

Signed-off-by: RYAN D. MOATS <rmoats at us.ibm.com>
---
 ovn/controller/binding.c        |   41 ++++++++++++++++++++++++++++++++++++--
 ovn/controller/ovn-controller.c |   15 +++----------
 ovn/controller/ovn-controller.h |    1 +
 ovn/controller/patch.c          |    3 +-
 4 files changed, 45 insertions(+), 15 deletions(-)

diff --git a/ovn/controller/binding.c b/ovn/controller/binding.c
index d3ca9c9..62b0d73 100644
--- a/ovn/controller/binding.c
+++ b/ovn/controller/binding.c
@@ -121,9 +121,31 @@ update_ct_zones(struct sset *lports, struct simap *ct_zones,
     }
 }
 
+/* Contains "struct local_datpath" nodes whose hash values are the
+ * row uuids of datapaths with at least one local port binding. */
+struct hmap local_datapaths_by_uuid =
+    HMAP_INITIALIZER(&local_datapaths_by_uuid);
+
+static struct local_datapath *
+local_datapath_lookup_by_uuid(const struct uuid *uuid)
+{
+    return hmap_first_with_hash(&local_datapaths_by_uuid, uuid_hash(uuid));
+}
+
+static void
+remove_local_datapath(struct hmap *local_datapaths, const struct uuid *uuid)
+{
+    struct local_datapath *ld = local_datapath_lookup_by_uuid(uuid);
+    if (ld) {
+        hmap_remove(local_datapaths, &ld->hmap_node);
+        hmap_remove(&local_datapaths_by_uuid, &ld->uuid_hmap_node);
+    }
+}
+
 static void
 add_local_datapath(struct hmap *local_datapaths,
-        const struct sbrec_port_binding *binding_rec)
+        const struct sbrec_port_binding *binding_rec,
+        const struct uuid *uuid)
 {
     if (hmap_first_with_hash(local_datapaths,
                              binding_rec->datapath->tunnel_key)) {
@@ -133,6 +155,8 @@ add_local_datapath(struct hmap *local_datapaths,
     struct local_datapath *ld = xzalloc(sizeof *ld);
     hmap_insert(local_datapaths, &ld->hmap_node,
                 binding_rec->datapath->tunnel_key);
+    hmap_insert(&local_datapaths_by_uuid, &ld->uuid_hmap_node,
+                uuid_hash(uuid));
 }
 
 static void
@@ -176,7 +200,17 @@ binding_run(struct controller_ctx *ctx, const struct ovsrec_bridge *br_int,
     /* Run through each binding record to see if it is resident on this
      * chassis and update the binding accordingly.  This includes both
      * directly connected logical ports and children of those ports. */
-    SBREC_PORT_BINDING_FOR_EACH(binding_rec, ctx->ovnsb_idl) {
+    SBREC_PORT_BINDING_FOR_EACH_TRACKED(binding_rec, ctx->ovnsb_idl) {
+        unsigned int del_seqno = sbrec_port_binding_row_get_seqno(binding_rec,
+            OVSDB_IDL_CHANGE_DELETE);
+
+        /* if the row has a del_seqno > 0, then trying to process the row
+         * isn't going to work (as it has already been freed) */
+        if (del_seqno > 0) {
+            remove_local_datapath(local_datapaths, &binding_rec->header_.uuid);
+            continue;
+        }
+
         const struct ovsrec_interface *iface_rec
             = shash_find_and_delete(&lports, binding_rec->logical_port);
         if (iface_rec
@@ -186,7 +220,8 @@ binding_run(struct controller_ctx *ctx, const struct ovsrec_bridge *br_int,
                 /* Add child logical port to the set of all local ports. */
                 sset_add(&all_lports, binding_rec->logical_port);
             }
-            add_local_datapath(local_datapaths, binding_rec);
+            add_local_datapath(local_datapaths, binding_rec,
+                               &binding_rec->header_.uuid);
             if (iface_rec && ctx->ovs_idl_txn) {
                 update_qos(iface_rec, binding_rec);
             }
diff --git a/ovn/controller/ovn-controller.c b/ovn/controller/ovn-controller.c
index 6edc04c..037178b 100644
--- a/ovn/controller/ovn-controller.c
+++ b/ovn/controller/ovn-controller.c
@@ -201,6 +201,10 @@ get_ovnsb_remote(struct ovsdb_idl *ovs_idl)
 struct lport_index lports;
 struct mcgroup_index mcgroups;
 
+/* Contains "struct local_datpath" nodes whose hash values are the
+ * tunnel_key of datapaths with at least one local port binding. */
+struct hmap local_datapaths = HMAP_INITIALIZER(&local_datapaths);
+
 int
 main(int argc, char *argv[])
 {
@@ -288,10 +292,6 @@ main(int argc, char *argv[])
             .ovnsb_idl_txn = ovsdb_idl_loop_run(&ovnsb_idl_loop),
         };
 
-        /* Contains "struct local_datpath" nodes whose hash values are the
-         * tunnel_key of datapaths with at least one local port binding. */
-        struct hmap local_datapaths = HMAP_INITIALIZER(&local_datapaths);
-
         const struct ovsrec_bridge *br_int = get_br_int(&ctx);
         const char *chassis_id = get_chassis_id(ctx.ovs_idl);
 
@@ -322,13 +322,6 @@ main(int argc, char *argv[])
             ofctrl_put();
         }
 
-        struct local_datapath *cur_node, *next_node;
-        HMAP_FOR_EACH_SAFE (cur_node, next_node, hmap_node, &local_datapaths) {
-            hmap_remove(&local_datapaths, &cur_node->hmap_node);
-            free(cur_node);
-        }
-        hmap_destroy(&local_datapaths);
-
         unixctl_server_run(unixctl);
 
         unixctl_server_wait(unixctl);
diff --git a/ovn/controller/ovn-controller.h b/ovn/controller/ovn-controller.h
index a3465eb..e8e21fb 100644
--- a/ovn/controller/ovn-controller.h
+++ b/ovn/controller/ovn-controller.h
@@ -38,6 +38,7 @@ struct controller_ctx {
  * the localnet port */
 struct local_datapath {
     struct hmap_node hmap_node;
+    struct hmap_node uuid_hmap_node;
     const struct sbrec_port_binding *localnet_port;
 };
 
diff --git a/ovn/controller/patch.c b/ovn/controller/patch.c
index 753ce3e..9c519b0 100644
--- a/ovn/controller/patch.c
+++ b/ovn/controller/patch.c
@@ -190,7 +190,8 @@ add_bridge_mappings(struct controller_ctx *ctx,
              * to create patch ports for it. */
             continue;
         }
-        if (ld->localnet_port) {
+        if (ld->localnet_port && strcmp(ld->localnet_port->logical_port,
+                                        binding->logical_port)) {
             static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 1);
             VLOG_WARN_RL(&rl, "localnet port '%s' already set for datapath "
                          "'%"PRId64"', skipping the new port '%s'.",
-- 
1.7.1




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