[ovs-dev] [OVN Patch v8 06/11] ovn-northd: Move broadcast and multicast lookup in lswitch to a function
anton.ivanov at cambridgegreys.com
anton.ivanov at cambridgegreys.com
Tue Jan 5 17:49:33 UTC 2021
From: Anton Ivanov <anton.ivanov at cambridgegreys.com>
Signed-off-by: Anton Ivanov <anton.ivanov at cambridgegreys.com>
---
northd/ovn-northd.c | 169 +++++++++++++++++++++++---------------------
1 file changed, 87 insertions(+), 82 deletions(-)
diff --git a/northd/ovn-northd.c b/northd/ovn-northd.c
index daf1db908..201c4d252 100644
--- a/northd/ovn-northd.c
+++ b/northd/ovn-northd.c
@@ -6780,88 +6780,6 @@ build_lswitch_flows(struct hmap *datapaths, struct hmap *ports,
struct ovn_datapath *od;
struct ovn_port *op;
- /* Ingress table 19: Destination lookup, broadcast and multicast handling
- * (priority 70 - 100). */
- HMAP_FOR_EACH (od, key_node, datapaths) {
- if (!od->nbs) {
- continue;
- }
-
- ovn_lflow_add(lflows, od, S_SWITCH_IN_L2_LKUP, 110,
- "eth.dst == $svc_monitor_mac",
- "handle_svc_check(inport);");
-
- struct mcast_switch_info *mcast_sw_info = &od->mcast_info.sw;
-
- if (mcast_sw_info->enabled) {
- ds_clear(&actions);
- if (mcast_sw_info->flood_reports) {
- ds_put_cstr(&actions,
- "clone { "
- "outport = \""MC_MROUTER_STATIC"\"; "
- "output; "
- "};");
- }
- ds_put_cstr(&actions, "igmp;");
- /* Punt IGMP traffic to controller. */
- ovn_lflow_add_unique(lflows, od, S_SWITCH_IN_L2_LKUP, 100,
- "ip4 && ip.proto == 2", ds_cstr(&actions));
-
- /* Punt MLD traffic to controller. */
- ovn_lflow_add_unique(lflows, od, S_SWITCH_IN_L2_LKUP, 100,
- "mldv1 || mldv2", ds_cstr(&actions));
-
- /* Flood all IP multicast traffic destined to 224.0.0.X to all
- * ports - RFC 4541, section 2.1.2, item 2.
- */
- ovn_lflow_add_unique(lflows, od, S_SWITCH_IN_L2_LKUP, 85,
- "ip4.mcast && ip4.dst == 224.0.0.0/24",
- "outport = \""MC_FLOOD"\"; output;");
-
- /* Flood all IPv6 multicast traffic destined to reserved
- * multicast IPs (RFC 4291, 2.7.1).
- */
- ovn_lflow_add_unique(lflows, od, S_SWITCH_IN_L2_LKUP, 85,
- "ip6.mcast_flood",
- "outport = \""MC_FLOOD"\"; output;");
-
- /* Forward uregistered IP multicast to routers with relay enabled
- * and to any ports configured to flood IP multicast traffic.
- * If configured to flood unregistered traffic this will be
- * handled by the L2 multicast flow.
- */
- if (!mcast_sw_info->flood_unregistered) {
- ds_clear(&actions);
-
- if (mcast_sw_info->flood_relay) {
- ds_put_cstr(&actions,
- "clone { "
- "outport = \""MC_MROUTER_FLOOD"\"; "
- "output; "
- "}; ");
- }
-
- if (mcast_sw_info->flood_static) {
- ds_put_cstr(&actions, "outport =\""MC_STATIC"\"; output;");
- }
-
- /* Explicitly drop the traffic if relay or static flooding
- * is not configured.
- */
- if (!mcast_sw_info->flood_relay &&
- !mcast_sw_info->flood_static) {
- ds_put_cstr(&actions, "drop;");
- }
-
- ovn_lflow_add_unique(lflows, od, S_SWITCH_IN_L2_LKUP, 80,
- "ip4.mcast || ip6.mcast",
- ds_cstr(&actions));
- }
- }
-
- ovn_lflow_add_unique(lflows, od, S_SWITCH_IN_L2_LKUP, 70, "eth.mcast",
- "outport = \""MC_FLOOD"\"; output;");
- }
/* Ingress table 19: Add IP multicast flows learnt from IGMP/MLD
* (priority 90). */
@@ -7488,6 +7406,92 @@ build_lswitch_external_port(struct ovn_port *op,
}
}
+/* Ingress table 19: Destination lookup, broadcast and multicast handling
+ * (priority 70 - 100). */
+static void
+build_lswitch_destination_lookup_bmcast(struct ovn_datapath *od,
+ struct hmap *lflows,
+ struct ds *actions)
+{
+ if (od->nbs) {
+
+ ovn_lflow_add(lflows, od, S_SWITCH_IN_L2_LKUP, 110,
+ "eth.dst == $svc_monitor_mac",
+ "handle_svc_check(inport);");
+
+ struct mcast_switch_info *mcast_sw_info = &od->mcast_info.sw;
+
+ if (mcast_sw_info->enabled) {
+ ds_clear(actions);
+ if (mcast_sw_info->flood_reports) {
+ ds_put_cstr(actions,
+ "clone { "
+ "outport = \""MC_MROUTER_STATIC"\"; "
+ "output; "
+ "};");
+ }
+ ds_put_cstr(actions, "igmp;");
+ /* Punt IGMP traffic to controller. */
+ ovn_lflow_add_unique(lflows, od, S_SWITCH_IN_L2_LKUP, 100,
+ "ip4 && ip.proto == 2", ds_cstr(actions));
+
+ /* Punt MLD traffic to controller. */
+ ovn_lflow_add_unique(lflows, od, S_SWITCH_IN_L2_LKUP, 100,
+ "mldv1 || mldv2", ds_cstr(actions));
+
+ /* Flood all IP multicast traffic destined to 224.0.0.X to all
+ * ports - RFC 4541, section 2.1.2, item 2.
+ */
+ ovn_lflow_add_unique(lflows, od, S_SWITCH_IN_L2_LKUP, 85,
+ "ip4.mcast && ip4.dst == 224.0.0.0/24",
+ "outport = \""MC_FLOOD"\"; output;");
+
+ /* Flood all IPv6 multicast traffic destined to reserved
+ * multicast IPs (RFC 4291, 2.7.1).
+ */
+ ovn_lflow_add_unique(lflows, od, S_SWITCH_IN_L2_LKUP, 85,
+ "ip6.mcast_flood",
+ "outport = \""MC_FLOOD"\"; output;");
+
+ /* Forward uregistered IP multicast to routers with relay enabled
+ * and to any ports configured to flood IP multicast traffic.
+ * If configured to flood unregistered traffic this will be
+ * handled by the L2 multicast flow.
+ */
+ if (!mcast_sw_info->flood_unregistered) {
+ ds_clear(actions);
+
+ if (mcast_sw_info->flood_relay) {
+ ds_put_cstr(actions,
+ "clone { "
+ "outport = \""MC_MROUTER_FLOOD"\"; "
+ "output; "
+ "}; ");
+ }
+
+ if (mcast_sw_info->flood_static) {
+ ds_put_cstr(actions, "outport =\""MC_STATIC"\"; output;");
+ }
+
+ /* Explicitly drop the traffic if relay or static flooding
+ * is not configured.
+ */
+ if (!mcast_sw_info->flood_relay &&
+ !mcast_sw_info->flood_static) {
+ ds_put_cstr(actions, "drop;");
+ }
+
+ ovn_lflow_add_unique(lflows, od, S_SWITCH_IN_L2_LKUP, 80,
+ "ip4.mcast || ip6.mcast",
+ ds_cstr(actions));
+ }
+ }
+
+ ovn_lflow_add_unique(lflows, od, S_SWITCH_IN_L2_LKUP, 70, "eth.mcast",
+ "outport = \""MC_FLOOD"\"; output;");
+ }
+}
+
/* Returns a string of the IP address of the router port 'op' that
* overlaps with 'ip_s". If one is not found, returns NULL.
*
@@ -11341,6 +11345,7 @@ build_lswitch_and_lrouter_iterate_by_od(struct ovn_datapath *od,
build_lswitch_arp_nd_responder_default(od, lsi->lflows);
build_lswitch_dns_lookup_and_response(od, lsi->lflows);
build_lswitch_dhcp_and_dns_defaults(od, lsi->lflows);
+ build_lswitch_destination_lookup_bmcast(od, lsi->lflows, &lsi->actions);
/* Build Logical Router Flows. */
build_adm_ctrl_flows_for_lrouter(od, lsi->lflows);
--
2.20.1
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