linux/net/bridge/br_private_mcast_eht.h
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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_ */
  94