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Diffstat (limited to 'pimd/pim_vxlan.h')
| -rw-r--r-- | pimd/pim_vxlan.h | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/pimd/pim_vxlan.h b/pimd/pim_vxlan.h new file mode 100644 index 0000000..1a7e9dc --- /dev/null +++ b/pimd/pim_vxlan.h @@ -0,0 +1,155 @@ +/* PIM support for VxLAN BUM flooding + * + * Copyright (C) 2019 Cumulus Networks, Inc. + * + * This file is part of FRR. + * + * FRR is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2, or (at your option) any + * later version. + * + * FRR is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#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 thread *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); + +/* Shutdown of PIM stop the thread */ +extern void pim_vxlan_terminate(void); +#endif /* PIM_VXLAN_H */ |