net/bridge/br_private_mcast_eht.h

   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_ */