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
9 union 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 */
17 struct 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 */
28 struct 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 */
41 struct 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
53 void br_multicast_eht_clean_sets(struct net_bridge_port_group *pg);
54 bool 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);
61 int br_multicast_eht_set_hosts_limit(struct net_bridge_port *p,
62 u32 eht_hosts_limit);
63
64 static inline bool
65 br_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
71 static inline bool
72 br_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
79 static 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
86 static 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
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