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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright (c) 2020, Nikolay Aleksandrov <nikolay@nvidia.com>
*/
#ifndef _BR_PRIVATE_MCAST_EHT_H_
#define _BR_PRIVATE_MCAST_EHT_H_
#define BR_MCAST_DEFAULT_EHT_HOSTS_LIMIT 512
union net_bridge_eht_addr {
__be32 ip4;
#if IS_ENABLED(CONFIG_IPV6)
struct in6_addr ip6;
#endif
};
/* single host's list of set entries and filter_mode */
struct net_bridge_group_eht_host {
struct rb_node rb_node;
union net_bridge_eht_addr h_addr;
struct hlist_head set_entries;
unsigned int num_entries;
unsigned char filter_mode;
struct net_bridge_port_group *pg;
};
/* (host, src entry) added to a per-src set and host's list */
struct net_bridge_group_eht_set_entry {
struct rb_node rb_node;
struct hlist_node host_list;
union net_bridge_eht_addr h_addr;
struct timer_list timer;
struct net_bridge *br;
struct net_bridge_group_eht_set *eht_set;
struct net_bridge_group_eht_host *h_parent;
struct net_bridge_mcast_gc mcast_gc;
};
/* per-src set */
struct net_bridge_group_eht_set {
struct rb_node rb_node;
union net_bridge_eht_addr src_addr;
struct rb_root entry_tree;
struct timer_list timer;
struct net_bridge_port_group *pg;
struct net_bridge *br;
struct net_bridge_mcast_gc mcast_gc;
};
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
void br_multicast_eht_clean_sets(struct net_bridge_port_group *pg);
bool br_multicast_eht_handle(const struct net_bridge_mcast *brmctx,
struct net_bridge_port_group *pg,
void *h_addr,
void *srcs,
u32 nsrcs,
size_t addr_size,
int grec_type);
int br_multicast_eht_set_hosts_limit(struct net_bridge_port *p,
u32 eht_hosts_limit);
static inline bool
br_multicast_eht_should_del_pg(const struct net_bridge_port_group *pg)
{
return !!((pg->key.port->flags & BR_MULTICAST_FAST_LEAVE) &&
RB_EMPTY_ROOT(&pg->eht_host_tree));
}
static inline bool
br_multicast_eht_hosts_over_limit(const struct net_bridge_port_group *pg)
{
const struct net_bridge_port *p = pg->key.port;
return !!(p->multicast_eht_hosts_cnt >= p->multicast_eht_hosts_limit);
}
static inline void br_multicast_eht_hosts_inc(struct net_bridge_port_group *pg)
{
struct net_bridge_port *p = pg->key.port;
p->multicast_eht_hosts_cnt++;
}
static inline void br_multicast_eht_hosts_dec(struct net_bridge_port_group *pg)
{
struct net_bridge_port *p = pg->key.port;
p->multicast_eht_hosts_cnt--;
}
#endif /* CONFIG_BRIDGE_IGMP_SNOOPING */
#endif /* _BR_PRIVATE_MCAST_EHT_H_ */
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