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(const struct net_bridge_mcast *brmctx,
55			     struct net_bridge_port_group *pg,
56			     void *h_addr,
57			     void *srcs,
58			     u32 nsrcs,
59			     size_t addr_size,
60			     int grec_type);
61int br_multicast_eht_set_hosts_limit(struct net_bridge_port *p,
62				     u32 eht_hosts_limit);
63
64static inline bool
65br_multicast_eht_should_del_pg(const struct net_bridge_port_group *pg)
66{
67	return !!((pg->key.port->flags & BR_MULTICAST_FAST_LEAVE) &&
68		  RB_EMPTY_ROOT(&pg->eht_host_tree));
69}
70
71static inline bool
72br_multicast_eht_hosts_over_limit(const struct net_bridge_port_group *pg)
73{
74	const struct net_bridge_port *p = pg->key.port;
75
76	return !!(p->multicast_eht_hosts_cnt >= p->multicast_eht_hosts_limit);
77}
78
79static inline void br_multicast_eht_hosts_inc(struct net_bridge_port_group *pg)
80{
81	struct net_bridge_port *p = pg->key.port;
82
83	p->multicast_eht_hosts_cnt++;
84}
85
86static inline void br_multicast_eht_hosts_dec(struct net_bridge_port_group *pg)
87{
88	struct net_bridge_port *p = pg->key.port;
89
90	p->multicast_eht_hosts_cnt--;
91}
92#endif /* CONFIG_BRIDGE_IGMP_SNOOPING */
93
94#endif /* _BR_PRIVATE_MCAST_EHT_H_ */
95