diff options
Diffstat (limited to 'net/bridge/br_mdb.c')
| -rw-r--r-- | net/bridge/br_mdb.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c index 389ff3c1e9d9..0281453f7766 100644 --- a/net/bridge/br_mdb.c +++ b/net/bridge/br_mdb.c @@ -37,6 +37,36 @@ br_ip6_rports_get_timer(struct net_bridge_mcast_port *pmctx, #endif } +static size_t __br_rports_one_size(void) +{ + return nla_total_size(sizeof(u32)) + /* MDBA_ROUTER_PORT */ + nla_total_size(sizeof(u32)) + /* MDBA_ROUTER_PATTR_TIMER */ + nla_total_size(sizeof(u8)) + /* MDBA_ROUTER_PATTR_TYPE */ + nla_total_size(sizeof(u32)) + /* MDBA_ROUTER_PATTR_INET_TIMER */ + nla_total_size(sizeof(u32)) + /* MDBA_ROUTER_PATTR_INET6_TIMER */ + nla_total_size(sizeof(u32)); /* MDBA_ROUTER_PATTR_VID */ +} + +size_t br_rports_size(const struct net_bridge_mcast *brmctx) +{ + struct net_bridge_mcast_port *pmctx; + size_t size = nla_total_size(0); /* MDBA_ROUTER */ + + rcu_read_lock(); + hlist_for_each_entry_rcu(pmctx, &brmctx->ip4_mc_router_list, + ip4_rlist) + size += __br_rports_one_size(); + +#if IS_ENABLED(CONFIG_IPV6) + hlist_for_each_entry_rcu(pmctx, &brmctx->ip6_mc_router_list, + ip6_rlist) + size += __br_rports_one_size(); +#endif + rcu_read_unlock(); + + return size; +} + int br_rports_fill_info(struct sk_buff *skb, const struct net_bridge_mcast *brmctx) { |