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1/* SPDX-License-Identifier: GPL-2.0-or-later
2 * Copyright (c) 2020, Nikolay Aleksandrov <nikolay@nvidia.com>
3 */
4#ifndef _BR_PRIVATE_MCAST_EHT_H_
5#define _BR_PRIVATE_MCAST_EHT_H_
6
7#define BR_MCAST_DEFAULT_EHT_HOSTS_LIMIT 512
8
9union net_bridge_eht_addr {
10 __be32 ip4;
11#if IS_ENABLED(CONFIG_IPV6)
12 struct in6_addr ip6;
13#endif
14};
15
16/* single host's list of set entries and filter_mode */
17struct net_bridge_group_eht_host {
18 struct rb_node rb_node;
19
20 union net_bridge_eht_addr h_addr;
21 struct hlist_head set_entries;
22 unsigned int num_entries;
23 unsigned char filter_mode;
24 struct net_bridge_port_group *pg;
25};
26
27/* (host, src entry) added to a per-src set and host's list */
28struct net_bridge_group_eht_set_entry {
29 struct rb_node rb_node;
30 struct hlist_node host_list;
31
32 union net_bridge_eht_addr h_addr;
33 struct timer_list timer;
34 struct net_bridge *br;
35 struct net_bridge_group_eht_set *eht_set;
36 struct net_bridge_group_eht_host *h_parent;
37 struct net_bridge_mcast_gc mcast_gc;
38};
39
40/* per-src set */
41struct net_bridge_group_eht_set {
42 struct rb_node rb_node;
43
44 union net_bridge_eht_addr src_addr;
45 struct rb_root entry_tree;
46 struct timer_list timer;
47 struct net_bridge_port_group *pg;
48 struct net_bridge *br;
49 struct net_bridge_mcast_gc mcast_gc;
50};
51
52#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
53void br_multicast_eht_clean_sets(struct net_bridge_port_group *pg);
54bool br_multicast_eht_handle(struct net_bridge_port_group *pg,
55 void *h_addr,
56 void *srcs,
57 u32 nsrcs,
58 size_t addr_size,
59 int grec_type);
60int br_multicast_eht_set_hosts_limit(struct net_bridge_port *p,
61 u32 eht_hosts_limit);
62
63static inline bool
64br_multicast_eht_should_del_pg(const struct net_bridge_port_group *pg)
65{
66 return !!((pg->key.port->flags & BR_MULTICAST_FAST_LEAVE) &&
67 RB_EMPTY_ROOT(&pg->eht_host_tree));
68}
69
70static inline bool
71br_multicast_eht_hosts_over_limit(const struct net_bridge_port_group *pg)
72{
73 const struct net_bridge_port *p = pg->key.port;
74
75 return !!(p->multicast_eht_hosts_cnt >= p->multicast_eht_hosts_limit);
76}
77
78static inline void br_multicast_eht_hosts_inc(struct net_bridge_port_group *pg)
79{
80 struct net_bridge_port *p = pg->key.port;
81
82 p->multicast_eht_hosts_cnt++;
83}
84
85static inline void br_multicast_eht_hosts_dec(struct net_bridge_port_group *pg)
86{
87 struct net_bridge_port *p = pg->key.port;
88
89 p->multicast_eht_hosts_cnt--;
90}
91#endif /* CONFIG_BRIDGE_IGMP_SNOOPING */
92
93#endif /* _BR_PRIVATE_MCAST_EHT_H_ */