cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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br_private_mcast_eht.h (2509B)

      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(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);
     61int br_multicast_eht_set_hosts_limit(struct net_bridge_port *p,
     62				     u32 eht_hosts_limit);
     63
     64static inline bool
     65br_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
     71static inline bool
     72br_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
     79static 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
     86static 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_ */