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-rw-r--r--pimd/pim_vxlan.h143
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 */