struct pim_vxlan vxlan_info, *pim_vxlan_p = &vxlan_info;
static void pim_vxlan_work_timer_setup(bool start);
+static void pim_vxlan_set_peerlink_rif(struct pim_instance *pim,
+ struct interface *ifp);
/*************************** vxlan work list **********************************
* A work list is maintained for staggered generation of pim null register
XFREE(MTYPE_PIM_VXLAN_SG, vxlan_sg);
}
+/******************************* MLAG handling *******************************/
+/* The peerlink sub-interface is added as an OIF to the origination-mroute.
+ * This is done to send a copy of the multicast-vxlan encapsulated traffic
+ * to the MLAG peer which may mroute it over the underlay if there are any
+ * interested receivers.
+ */
+static void pim_vxlan_sg_peerlink_update(struct hash_backet *backet, void *arg)
+{
+ struct interface *new_oif = (struct interface *)arg;
+ struct pim_vxlan_sg *vxlan_sg = (struct pim_vxlan_sg *)backet->data;
+
+ if (!pim_vxlan_is_orig_mroute(vxlan_sg))
+ return;
+
+ if (vxlan_sg->orig_oif == new_oif)
+ return;
+
+ pim_vxlan_orig_mr_oif_del(vxlan_sg);
+
+ vxlan_sg->orig_oif = new_oif;
+ pim_vxlan_orig_mr_oif_add(vxlan_sg);
+}
+
+/* In the case of anycast VTEPs the VTEP-PIP must be used as the
+ * register source.
+ */
+bool pim_vxlan_get_register_src(struct pim_instance *pim,
+ struct pim_upstream *up, struct in_addr *src_p)
+{
+ if (!(vxlan_mlag.flags & PIM_VXLAN_MLAGF_ENABLED))
+ return true;
+
+ /* if address is not available suppress the pim-register */
+ if (vxlan_mlag.reg_addr.s_addr == INADDR_ANY)
+ return false;
+
+ *src_p = vxlan_mlag.reg_addr;
+ return true;
+}
+
+void pim_vxlan_mlag_update(bool enable, bool peer_state, uint32_t role,
+ struct interface *peerlink_rif,
+ struct in_addr *reg_addr)
+{
+ struct pim_instance *pim;
+ struct interface *old_oif;
+ struct interface *new_oif;
+ char addr_buf[INET_ADDRSTRLEN];
+ struct pim_interface *pim_ifp = NULL;
+
+ if (PIM_DEBUG_VXLAN) {
+ inet_ntop(AF_INET, reg_addr,
+ addr_buf, INET_ADDRSTRLEN);
+ zlog_debug("vxlan MLAG update %s state %s role %d rif %s addr %s",
+ enable ? "enable" : "disable",
+ peer_state ? "up" : "down",
+ role,
+ peerlink_rif ? peerlink_rif->name : "-",
+ addr_buf);
+ }
+
+ /* XXX: for now vxlan termination is only possible in the default VRF
+ * when that changes this will need to change to iterate all VRFs
+ */
+ pim = pim_get_pim_instance(VRF_DEFAULT);
+
+ old_oif = pim_vxlan_orig_mr_oif_get(pim);
+
+ if (enable)
+ vxlan_mlag.flags |= PIM_VXLAN_MLAGF_ENABLED;
+ else
+ vxlan_mlag.flags &= ~PIM_VXLAN_MLAGF_ENABLED;
+
+ if (vxlan_mlag.peerlink_rif != peerlink_rif)
+ vxlan_mlag.peerlink_rif = peerlink_rif;
+
+ vxlan_mlag.reg_addr = *reg_addr;
+ vxlan_mlag.peer_state = peer_state;
+ vxlan_mlag.role = role;
+
+ /* process changes */
+ if (vxlan_mlag.peerlink_rif)
+ pim_ifp = (struct pim_interface *)vxlan_mlag.peerlink_rif->info;
+ if ((vxlan_mlag.flags & PIM_VXLAN_MLAGF_ENABLED) &&
+ pim_ifp && (pim_ifp->mroute_vif_index > 0))
+ pim_vxlan_set_peerlink_rif(pim, peerlink_rif);
+ else
+ pim_vxlan_set_peerlink_rif(pim, NULL);
+
+ new_oif = pim_vxlan_orig_mr_oif_get(pim);
+ if (old_oif != new_oif)
+ hash_iterate(pim->vxlan.sg_hash, pim_vxlan_sg_peerlink_update,
+ new_oif);
+}
+
/****************************** misc callbacks *******************************/
static void pim_vxlan_set_default_iif(struct pim_instance *pim,
struct interface *ifp)