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2dba407f99
Add two new port attributes which make EHT hosts limit configurable and
export the current number of tracked EHT hosts:
- IFLA_BRPORT_MCAST_EHT_HOSTS_LIMIT: configure/retrieve current limit
- IFLA_BRPORT_MCAST_EHT_HOSTS_CNT: current number of tracked hosts
Setting IFLA_BRPORT_MCAST_EHT_HOSTS_LIMIT to 0 is currently not allowed.
Note that we have to increase RTNL_SLAVE_MAX_TYPE to 38 minimum, I've
increased it to 40 to have space for two more future entries.
v2: move br_multicast_eht_set_hosts_limit() to br_multicast_eht.c,
no functional change
Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
93 lines
2.4 KiB
C
93 lines
2.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later
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* Copyright (c) 2020, Nikolay Aleksandrov <nikolay@nvidia.com>
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*/
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#ifndef _BR_PRIVATE_MCAST_EHT_H_
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#define _BR_PRIVATE_MCAST_EHT_H_
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#define BR_MCAST_DEFAULT_EHT_HOSTS_LIMIT 512
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union net_bridge_eht_addr {
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__be32 ip4;
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#if IS_ENABLED(CONFIG_IPV6)
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struct in6_addr ip6;
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#endif
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};
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/* single host's list of set entries and filter_mode */
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struct net_bridge_group_eht_host {
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struct rb_node rb_node;
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union net_bridge_eht_addr h_addr;
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struct hlist_head set_entries;
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unsigned int num_entries;
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unsigned char filter_mode;
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struct net_bridge_port_group *pg;
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};
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/* (host, src entry) added to a per-src set and host's list */
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struct net_bridge_group_eht_set_entry {
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struct rb_node rb_node;
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struct hlist_node host_list;
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union net_bridge_eht_addr h_addr;
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struct timer_list timer;
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struct net_bridge *br;
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struct net_bridge_group_eht_set *eht_set;
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struct net_bridge_group_eht_host *h_parent;
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struct net_bridge_mcast_gc mcast_gc;
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};
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/* per-src set */
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struct net_bridge_group_eht_set {
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struct rb_node rb_node;
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union net_bridge_eht_addr src_addr;
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struct rb_root entry_tree;
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struct timer_list timer;
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struct net_bridge_port_group *pg;
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struct net_bridge *br;
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struct net_bridge_mcast_gc mcast_gc;
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};
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#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
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void br_multicast_eht_clean_sets(struct net_bridge_port_group *pg);
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bool br_multicast_eht_handle(struct net_bridge_port_group *pg,
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void *h_addr,
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void *srcs,
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u32 nsrcs,
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size_t addr_size,
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int grec_type);
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int br_multicast_eht_set_hosts_limit(struct net_bridge_port *p,
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u32 eht_hosts_limit);
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static inline bool
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br_multicast_eht_should_del_pg(const struct net_bridge_port_group *pg)
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{
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return !!((pg->key.port->flags & BR_MULTICAST_FAST_LEAVE) &&
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RB_EMPTY_ROOT(&pg->eht_host_tree));
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}
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static inline bool
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br_multicast_eht_hosts_over_limit(const struct net_bridge_port_group *pg)
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{
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const struct net_bridge_port *p = pg->key.port;
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return !!(p->multicast_eht_hosts_cnt >= p->multicast_eht_hosts_limit);
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}
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static inline void br_multicast_eht_hosts_inc(struct net_bridge_port_group *pg)
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{
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struct net_bridge_port *p = pg->key.port;
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p->multicast_eht_hosts_cnt++;
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}
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static inline void br_multicast_eht_hosts_dec(struct net_bridge_port_group *pg)
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{
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struct net_bridge_port *p = pg->key.port;
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p->multicast_eht_hosts_cnt--;
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}
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#endif /* CONFIG_BRIDGE_IGMP_SNOOPING */
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#endif /* _BR_PRIVATE_MCAST_EHT_H_ */
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