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acddc0ed | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
b583b035 AK |
2 | /* PIM support for VxLAN BUM flooding |
3 | * | |
4 | * Copyright (C) 2019 Cumulus Networks, Inc. | |
b583b035 AK |
5 | */ |
6 | ||
7 | #ifndef PIM_VXLAN_H | |
8 | #define PIM_VXLAN_H | |
9 | ||
993e3d8e DL |
10 | #include "pim_instance.h" |
11 | ||
d889ab75 AK |
12 | /* global timer used for miscellaneous staggered processing */ |
13 | #define PIM_VXLAN_WORK_TIME 1 | |
14 | /* number of SG entries processed at one shot */ | |
15 | #define PIM_VXLAN_WORK_MAX 500 | |
16 | /* frequency of periodic NULL registers */ | |
17 | #define PIM_VXLAN_NULL_REG_INTERVAL 60 /* seconds */ | |
18 | ||
19 | #define vxlan_mlag (vxlan_info.mlag) | |
20 | ||
62429d84 AK |
21 | enum pim_vxlan_sg_flags { |
22 | PIM_VXLAN_SGF_NONE = 0, | |
23 | PIM_VXLAN_SGF_DEL_IN_PROG = (1 << 0), | |
24 | PIM_VXLAN_SGF_OIF_INSTALLED = (1 << 1) | |
25 | }; | |
26 | ||
b583b035 AK |
27 | struct pim_vxlan_sg { |
28 | struct pim_instance *pim; | |
29 | ||
30 | /* key */ | |
6fff2cc6 | 31 | pim_sgaddr sg; |
b583b035 | 32 | char sg_str[PIM_SG_LEN]; |
62429d84 AK |
33 | |
34 | enum pim_vxlan_sg_flags flags; | |
35 | struct pim_upstream *up; | |
d889ab75 | 36 | struct listnode *work_node; /* to pim_vxlan.work_list */ |
62429d84 AK |
37 | |
38 | /* termination info (only applicable to termination XG mroutes) | |
39 | * term_if - termination device ipmr-lo is added to the OIL | |
40 | * as local/IGMP membership to allow termination of vxlan traffic | |
41 | */ | |
42 | struct interface *term_oif; | |
43 | ||
44 | /* origination info | |
45 | * iif - lo/vrf or peerlink (on MLAG setups) | |
46 | * peerlink_oif - added to the OIL to send encapsulated BUM traffic to | |
47 | * the MLAG peer switch | |
48 | */ | |
49 | struct interface *iif; | |
50 | /* on a MLAG setup the peerlink is added as a static OIF */ | |
51 | struct interface *orig_oif; | |
b583b035 AK |
52 | }; |
53 | ||
1595f9bb AK |
54 | enum pim_vxlan_mlag_flags { |
55 | PIM_VXLAN_MLAGF_NONE = 0, | |
0309c55d AK |
56 | PIM_VXLAN_MLAGF_ENABLED = (1 << 0), |
57 | PIM_VXLAN_MLAGF_DO_REG = (1 << 1) | |
1595f9bb AK |
58 | }; |
59 | ||
1595f9bb AK |
60 | struct pim_vxlan_mlag { |
61 | enum pim_vxlan_mlag_flags flags; | |
05ca004b AK |
62 | /* XXX - remove this variable from here */ |
63 | int role; | |
1595f9bb AK |
64 | bool peer_state; |
65 | /* routed interface setup on top of MLAG peerlink */ | |
66 | struct interface *peerlink_rif; | |
67 | struct in_addr reg_addr; | |
68 | }; | |
69 | ||
d889ab75 AK |
70 | enum pim_vxlan_flags { |
71 | PIM_VXLANF_NONE = 0, | |
72 | PIM_VXLANF_WORK_INITED = (1 << 0) | |
73 | }; | |
74 | ||
1595f9bb | 75 | struct pim_vxlan { |
d889ab75 AK |
76 | enum pim_vxlan_flags flags; |
77 | ||
78 | struct thread *work_timer; | |
79 | struct list *work_list; | |
80 | struct listnode *next_work; | |
81 | int max_work_cnt; | |
82 | ||
1595f9bb AK |
83 | struct pim_vxlan_mlag mlag; |
84 | }; | |
85 | ||
a513da36 AK |
86 | /* zebra adds- |
87 | * 1. one (S, G) entry where S=local-VTEP-IP and G==BUM-mcast-grp for | |
88 | * each BUM MDT. This is the origination entry. | |
89 | * 2. and one (*, G) entry each MDT. This is the termination place holder. | |
90 | * | |
91 | * Note: This doesn't mean that only (*, G) mroutes are used for tunnel | |
92 | * termination. (S, G) mroutes with ipmr-lo in the OIL can also be | |
93 | * used for tunnel termiation if SPT switchover happens; however such | |
94 | * SG entries are created by traffic and will NOT be a part of the vxlan SG | |
95 | * database. | |
96 | */ | |
97 | static inline bool pim_vxlan_is_orig_mroute(struct pim_vxlan_sg *vxlan_sg) | |
98 | { | |
2a27f13b | 99 | return !pim_addr_is_any(vxlan_sg->sg.src); |
a513da36 AK |
100 | } |
101 | ||
a155fed5 AK |
102 | static inline bool pim_vxlan_is_local_sip(struct pim_upstream *up) |
103 | { | |
2a27f13b DL |
104 | return !pim_addr_is_any(up->sg.src) && |
105 | up->rpf.source_nexthop.interface && | |
106 | if_is_loopback(up->rpf.source_nexthop.interface); | |
a155fed5 AK |
107 | } |
108 | ||
650d9ad1 AK |
109 | static inline bool pim_vxlan_is_term_dev_cfg(struct pim_instance *pim, |
110 | struct interface *ifp) | |
111 | { | |
112 | return pim->vxlan.term_if_cfg == ifp; | |
113 | } | |
114 | ||
f1e2901a | 115 | extern struct pim_vxlan *pim_vxlan_p; |
b583b035 | 116 | extern struct pim_vxlan_sg *pim_vxlan_sg_find(struct pim_instance *pim, |
6fff2cc6 | 117 | pim_sgaddr *sg); |
b583b035 | 118 | extern struct pim_vxlan_sg *pim_vxlan_sg_add(struct pim_instance *pim, |
6fff2cc6 DL |
119 | pim_sgaddr *sg); |
120 | extern void pim_vxlan_sg_del(struct pim_instance *pim, pim_sgaddr *sg); | |
b9f3a51c AK |
121 | extern void pim_vxlan_update_sg_reg_state(struct pim_instance *pim, |
122 | struct pim_upstream *up, bool reg_join); | |
332087df | 123 | extern struct pim_interface *pim_vxlan_get_term_ifp(struct pim_instance *pim); |
269c1fe1 AK |
124 | extern void pim_vxlan_add_vif(struct interface *ifp); |
125 | extern void pim_vxlan_del_vif(struct interface *ifp); | |
0a2dcc1c AK |
126 | extern void pim_vxlan_add_term_dev(struct pim_instance *pim, |
127 | struct interface *ifp); | |
128 | extern void pim_vxlan_del_term_dev(struct pim_instance *pim); | |
48b33862 AK |
129 | extern bool pim_vxlan_get_register_src(struct pim_instance *pim, |
130 | struct pim_upstream *up, struct in_addr *src_p); | |
131 | extern void pim_vxlan_mlag_update(bool enable, bool peer_state, uint32_t role, | |
132 | struct interface *peerlink_rif, | |
133 | struct in_addr *reg_addr); | |
0309c55d | 134 | extern bool pim_vxlan_do_mlag_reg(void); |
95586137 AK |
135 | extern void pim_vxlan_inherit_mlag_flags(struct pim_instance *pim, |
136 | struct pim_upstream *up, bool inherit); | |
b583b035 | 137 | |
3c582f62 DS |
138 | /* Shutdown of PIM stop the thread */ |
139 | extern void pim_vxlan_terminate(void); | |
b583b035 | 140 | #endif /* PIM_VXLAN_H */ |