Adding upstream version 9.1.upstream/9.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 143 insertions, 0 deletions

diff --git a/pimd/pim_vxlan.h b/pimd/pim_vxlan.h
new file mode 100644
index 0000000..5039bf6
--- /dev/null
+++ b/pimd/pim_vxlan.h
@@ -0,0 +1,143 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* PIM support for VxLAN BUM flooding
+ *
+ * Copyright (C) 2019 Cumulus Networks, Inc.
+ */
+
+#ifndef PIM_VXLAN_H
+#define PIM_VXLAN_H
+
+#include "pim_instance.h"
+
+/* global timer used for miscellaneous staggered processing */
+#define PIM_VXLAN_WORK_TIME 1
+/* number of SG entries processed at one shot */
+#define PIM_VXLAN_WORK_MAX 500
+/* frequency of periodic NULL registers */
+#define PIM_VXLAN_NULL_REG_INTERVAL 60 /* seconds */
+
+#define vxlan_mlag (vxlan_info.mlag)
+
+enum pim_vxlan_sg_flags {
+	PIM_VXLAN_SGF_NONE = 0,
+	PIM_VXLAN_SGF_DEL_IN_PROG = (1 << 0),
+	PIM_VXLAN_SGF_OIF_INSTALLED = (1 << 1)
+};
+
+struct pim_vxlan_sg {
+	struct pim_instance *pim;
+
+	/* key */
+	pim_sgaddr sg;
+	char sg_str[PIM_SG_LEN];
+
+	enum pim_vxlan_sg_flags flags;
+	struct pim_upstream *up;
+	struct listnode *work_node; /* to pim_vxlan.work_list */
+
+	/* termination info (only applicable to termination XG mroutes)
+	 * term_if - termination device ipmr-lo is added to the OIL
+	 * as local/IGMP membership to allow termination of vxlan traffic
+	 */
+	struct interface *term_oif;
+
+	/* origination info
+	 * iif - lo/vrf or peerlink (on MLAG setups)
+	 * peerlink_oif - added to the OIL to send encapsulated BUM traffic to
+	 * the MLAG peer switch
+	 */
+	struct interface *iif;
+	/* on a MLAG setup the peerlink is added as a static OIF */
+	struct interface *orig_oif;
+};
+
+enum pim_vxlan_mlag_flags {
+	PIM_VXLAN_MLAGF_NONE = 0,
+	PIM_VXLAN_MLAGF_ENABLED = (1 << 0),
+	PIM_VXLAN_MLAGF_DO_REG = (1 << 1)
+};
+
+struct pim_vxlan_mlag {
+	enum pim_vxlan_mlag_flags flags;
+	/* XXX - remove this variable from here */
+	int role;
+	bool peer_state;
+	/* routed interface setup on top of MLAG peerlink */
+	struct interface *peerlink_rif;
+	struct in_addr reg_addr;
+};
+
+enum pim_vxlan_flags {
+	PIM_VXLANF_NONE = 0,
+	PIM_VXLANF_WORK_INITED = (1 << 0)
+};
+
+struct pim_vxlan {
+	enum pim_vxlan_flags flags;
+
+	struct event *work_timer;
+	struct list *work_list;
+	struct listnode *next_work;
+	int max_work_cnt;
+
+	struct pim_vxlan_mlag mlag;
+};
+
+/* zebra adds-
+ * 1. one (S, G) entry where S=local-VTEP-IP and G==BUM-mcast-grp for
+ * each BUM MDT. This is the origination entry.
+ * 2. and one (*, G) entry each MDT. This is the termination place holder.
+ *
+ * Note: This doesn't mean that only (*, G) mroutes are used for tunnel
+ * termination. (S, G) mroutes with ipmr-lo in the OIL can also be
+ * used for tunnel termiation if SPT switchover happens; however such
+ * SG entries are created by traffic and will NOT be a part of the vxlan SG
+ * database.
+ */
+static inline bool pim_vxlan_is_orig_mroute(struct pim_vxlan_sg *vxlan_sg)
+{
+	return !pim_addr_is_any(vxlan_sg->sg.src);
+}
+
+static inline bool pim_vxlan_is_local_sip(struct pim_upstream *up)
+{
+	return !pim_addr_is_any(up->sg.src) &&
+	       up->rpf.source_nexthop.interface &&
+	       if_is_loopback(up->rpf.source_nexthop.interface);
+}
+
+static inline bool pim_vxlan_is_term_dev_cfg(struct pim_instance *pim,
+			struct interface *ifp)
+{
+	return pim->vxlan.term_if_cfg == ifp;
+}
+
+extern struct pim_vxlan *pim_vxlan_p;
+extern struct pim_vxlan_sg *pim_vxlan_sg_find(struct pim_instance *pim,
+					      pim_sgaddr *sg);
+extern struct pim_vxlan_sg *pim_vxlan_sg_add(struct pim_instance *pim,
+					     pim_sgaddr *sg);
+extern void pim_vxlan_sg_del(struct pim_instance *pim, pim_sgaddr *sg);
+extern void pim_vxlan_update_sg_reg_state(struct pim_instance *pim,
+		struct pim_upstream *up, bool reg_join);
+extern struct pim_interface *pim_vxlan_get_term_ifp(struct pim_instance *pim);
+extern void pim_vxlan_add_vif(struct interface *ifp);
+extern void pim_vxlan_del_vif(struct interface *ifp);
+extern void pim_vxlan_add_term_dev(struct pim_instance *pim,
+		struct interface *ifp);
+extern void pim_vxlan_del_term_dev(struct pim_instance *pim);
+extern bool pim_vxlan_get_register_src(struct pim_instance *pim,
+		struct pim_upstream *up, struct in_addr *src_p);
+extern void pim_vxlan_mlag_update(bool enable, bool peer_state, uint32_t role,
+				struct interface *peerlink_rif,
+				struct in_addr *reg_addr);
+extern bool pim_vxlan_do_mlag_reg(void);
+extern void pim_vxlan_inherit_mlag_flags(struct pim_instance *pim,
+		struct pim_upstream *up, bool inherit);
+
+extern void pim_vxlan_rp_info_is_alive(struct pim_instance *pim,
+				       struct pim_rpf *rpg_changed);
+
+/* Shutdown of PIM stop the thread */
+extern void pim_vxlan_terminate(void);
+#endif /* PIM_VXLAN_H */