bgpd: backpressure - Add a typesafe list for Zebra L2VNI and L3VNI

- For L2vni, struct bgp_master holds a type safe list of all the VNIs(struct bgpevpn) that needs to be processed. - For L3vni, struct bgp_master holds a type safe list of all the BGP_VRFs(struct bgp) that needs to be processed. Future commits will use this. Ticket :#3864371 Signed-off-by: Rajasekar Raja <[email protected]>
raja-rajasekar · Aug 28, 2024 · 76c5dee · 76c5dee
1 parent 962de0f
commit 76c5dee
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diff --git a/bgpd/bgp_evpn_private.h b/bgpd/bgp_evpn_private.h
@@ -108,11 +108,15 @@ struct bgpevpn {
 	/* List of local ESs */
 	struct list *local_es_evi_list;
 
+	struct zebra_l2_vni_item zl2vni;
+
 	QOBJ_FIELDS;
 };
 
 DECLARE_QOBJ_TYPE(bgpevpn);
 
+DECLARE_LIST(zebra_l2_vni, struct bgpevpn, zl2vni);
+
 /* Mapping of Import RT to VNIs.
  * The Import RTs of all VNIs are maintained in a hash table with each
  * RT linking to all VNIs that will import routes matching this RT.

diff --git a/bgpd/bgp_main.c b/bgpd/bgp_main.c
@@ -209,6 +209,8 @@ static __attribute__((__noreturn__)) void bgp_exit(int status)
 	bgp_nhg_finish();
 
 	zebra_announce_fini(&bm->zebra_announce_head);
+	zebra_l2_vni_fini(&bm->zebra_l2_vni_head);
+	zebra_l3_vni_fini(&bm->zebra_l3_vni_head);
 
 	/* reverse bgp_dump_init */
 	bgp_dump_finish();

diff --git a/bgpd/bgpd.c b/bgpd/bgpd.c
@@ -8424,6 +8424,8 @@ void bgp_master_init(struct event_loop *master, const int buffer_size,
 	bm = &bgp_master;
 
 	zebra_announce_init(&bm->zebra_announce_head);
+	zebra_l2_vni_init(&bm->zebra_l2_vni_head);
+	zebra_l3_vni_init(&bm->zebra_l3_vni_head);
 	bm->bgp = list_new();
 	bm->listen_sockets = list_new();
 	bm->port = BGP_PORT_DEFAULT;

diff --git a/bgpd/bgpd.h b/bgpd/bgpd.h
@@ -19,6 +19,8 @@
 #include "asn.h"
 
 PREDECL_LIST(zebra_announce);
+PREDECL_LIST(zebra_l2_vni);
+PREDECL_LIST(zebra_l3_vni);
 
 /* For union sockunion.  */
 #include "queue.h"
@@ -203,6 +205,12 @@ struct bgp_master {
 	/* To preserve ordering of installations into zebra across all Vrfs */
 	struct zebra_announce_head zebra_announce_head;
 
+	/* To preserve ordering of processing of L2 VNIs in BGP */
+	struct zebra_l2_vni_head zebra_l2_vni_head;
+
+	/* To preserve ordering of processing of BGP-VRFs for L3 VNIs */
+	struct zebra_l3_vni_head zebra_l3_vni_head;
+
 	QOBJ_FIELDS;
 };
 DECLARE_QOBJ_TYPE(bgp_master);
@@ -859,10 +867,14 @@ struct bgp {
 	/* BGP route flap dampening configuration */
 	struct bgp_damp_config damp[AFI_MAX][SAFI_MAX];
 
+	struct zebra_l3_vni_item zl3vni;
+
 	QOBJ_FIELDS;
 };
 DECLARE_QOBJ_TYPE(bgp);
 
+DECLARE_LIST(zebra_l3_vni, struct bgp, zl3vni);
+
 struct bgp_interface {
 #define BGP_INTERFACE_MPLS_BGP_FORWARDING (1 << 0)
 /* L3VPN multi domain switching */