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-rw-r--r--include/uapi/linux/if_link.h2
-rw-r--r--net/bridge/br_multicast.c1
-rw-r--r--net/bridge/br_multicast_eht.c22
-rw-r--r--net/bridge/br_netlink.c19
-rw-r--r--net/bridge/br_private.h2
-rw-r--r--net/bridge/br_private_mcast_eht.h28
-rw-r--r--net/bridge/br_sysfs_if.c26
-rw-r--r--net/core/rtnetlink.c2
8 files changed, 100 insertions, 2 deletions
diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h
index 2bd0d8bbcdb2..eb8018c3a737 100644
--- a/include/uapi/linux/if_link.h
+++ b/include/uapi/linux/if_link.h
@@ -525,6 +525,8 @@ enum {
IFLA_BRPORT_BACKUP_PORT,
IFLA_BRPORT_MRP_RING_OPEN,
IFLA_BRPORT_MRP_IN_OPEN,
+ IFLA_BRPORT_MCAST_EHT_HOSTS_LIMIT,
+ IFLA_BRPORT_MCAST_EHT_HOSTS_CNT,
__IFLA_BRPORT_MAX
};
#define IFLA_BRPORT_MAX (__IFLA_BRPORT_MAX - 1)
diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index 3aa2833f60c7..6f672eb7ff33 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -1608,6 +1608,7 @@ static void br_mc_disabled_update(struct net_device *dev, bool value)
int br_multicast_add_port(struct net_bridge_port *port)
{
port->multicast_router = MDB_RTR_TYPE_TEMP_QUERY;
+ port->multicast_eht_hosts_limit = BR_MCAST_DEFAULT_EHT_HOSTS_LIMIT;
timer_setup(&port->multicast_router_timer,
br_multicast_router_expired, 0);
diff --git a/net/bridge/br_multicast_eht.c b/net/bridge/br_multicast_eht.c
index ff9b3ba37cab..fea38b9a7268 100644
--- a/net/bridge/br_multicast_eht.c
+++ b/net/bridge/br_multicast_eht.c
@@ -127,6 +127,8 @@ static void __eht_destroy_host(struct net_bridge_group_eht_host *eht_host)
{
WARN_ON(!hlist_empty(&eht_host->set_entries));
+ br_multicast_eht_hosts_dec(eht_host->pg);
+
rb_erase(&eht_host->rb_node, &eht_host->pg->eht_host_tree);
RB_CLEAR_NODE(&eht_host->rb_node);
kfree(eht_host);
@@ -257,6 +259,9 @@ __eht_lookup_create_host(struct net_bridge_port_group *pg,
return this;
}
+ if (br_multicast_eht_hosts_over_limit(pg))
+ return NULL;
+
eht_host = kzalloc(sizeof(*eht_host), GFP_ATOMIC);
if (!eht_host)
return NULL;
@@ -269,6 +274,8 @@ __eht_lookup_create_host(struct net_bridge_port_group *pg,
rb_link_node(&eht_host->rb_node, parent, link);
rb_insert_color(&eht_host->rb_node, &pg->eht_host_tree);
+ br_multicast_eht_hosts_inc(pg);
+
return eht_host;
}
@@ -854,3 +861,18 @@ bool br_multicast_eht_handle(struct net_bridge_port_group *pg,
out:
return changed;
}
+
+int br_multicast_eht_set_hosts_limit(struct net_bridge_port *p,
+ u32 eht_hosts_limit)
+{
+ struct net_bridge *br = p->br;
+
+ if (!eht_hosts_limit)
+ return -EINVAL;
+
+ spin_lock_bh(&br->multicast_lock);
+ p->multicast_eht_hosts_limit = eht_hosts_limit;
+ spin_unlock_bh(&br->multicast_lock);
+
+ return 0;
+}
diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
index 762f273802cd..bd3962da345a 100644
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -18,6 +18,7 @@
#include "br_private_stp.h"
#include "br_private_cfm.h"
#include "br_private_tunnel.h"
+#include "br_private_mcast_eht.h"
static int __get_num_vlan_infos(struct net_bridge_vlan_group *vg,
u32 filter_mask)
@@ -199,6 +200,8 @@ static inline size_t br_port_info_size(void)
+ nla_total_size(sizeof(u16)) /* IFLA_BRPORT_GROUP_FWD_MASK */
+ nla_total_size(sizeof(u8)) /* IFLA_BRPORT_MRP_RING_OPEN */
+ nla_total_size(sizeof(u8)) /* IFLA_BRPORT_MRP_IN_OPEN */
+ + nla_total_size(sizeof(u32)) /* IFLA_BRPORT_MCAST_EHT_HOSTS_LIMIT */
+ + nla_total_size(sizeof(u32)) /* IFLA_BRPORT_MCAST_EHT_HOSTS_CNT */
+ 0;
}
@@ -283,7 +286,11 @@ static int br_port_fill_attrs(struct sk_buff *skb,
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
if (nla_put_u8(skb, IFLA_BRPORT_MULTICAST_ROUTER,
- p->multicast_router))
+ p->multicast_router) ||
+ nla_put_u32(skb, IFLA_BRPORT_MCAST_EHT_HOSTS_LIMIT,
+ p->multicast_eht_hosts_limit) ||
+ nla_put_u32(skb, IFLA_BRPORT_MCAST_EHT_HOSTS_CNT,
+ p->multicast_eht_hosts_cnt))
return -EMSGSIZE;
#endif
@@ -820,6 +827,7 @@ static const struct nla_policy br_port_policy[IFLA_BRPORT_MAX + 1] = {
[IFLA_BRPORT_NEIGH_SUPPRESS] = { .type = NLA_U8 },
[IFLA_BRPORT_ISOLATED] = { .type = NLA_U8 },
[IFLA_BRPORT_BACKUP_PORT] = { .type = NLA_U32 },
+ [IFLA_BRPORT_MCAST_EHT_HOSTS_LIMIT] = { .type = NLA_U32 },
};
/* Change the state of the port and notify spanning tree */
@@ -955,6 +963,15 @@ static int br_setport(struct net_bridge_port *p, struct nlattr *tb[])
if (err)
return err;
}
+
+ if (tb[IFLA_BRPORT_MCAST_EHT_HOSTS_LIMIT]) {
+ u32 hlimit;
+
+ hlimit = nla_get_u32(tb[IFLA_BRPORT_MCAST_EHT_HOSTS_LIMIT]);
+ err = br_multicast_eht_set_hosts_limit(p, hlimit);
+ if (err)
+ return err;
+ }
#endif
if (tb[IFLA_BRPORT_GROUP_FWD_MASK]) {
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 0e26ba623006..d242ba668e47 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -310,6 +310,8 @@ struct net_bridge_port {
#if IS_ENABLED(CONFIG_IPV6)
struct bridge_mcast_own_query ip6_own_query;
#endif /* IS_ENABLED(CONFIG_IPV6) */
+ u32 multicast_eht_hosts_limit;
+ u32 multicast_eht_hosts_cnt;
unsigned char multicast_router;
struct bridge_mcast_stats __percpu *mcast_stats;
struct timer_list multicast_router_timer;
diff --git a/net/bridge/br_private_mcast_eht.h b/net/bridge/br_private_mcast_eht.h
index 9daffa3ad8d5..f89049f4892c 100644
--- a/net/bridge/br_private_mcast_eht.h
+++ b/net/bridge/br_private_mcast_eht.h
@@ -4,6 +4,8 @@
#ifndef _BR_PRIVATE_MCAST_EHT_H_
#define _BR_PRIVATE_MCAST_EHT_H_
+#define BR_MCAST_DEFAULT_EHT_HOSTS_LIMIT 512
+
union net_bridge_eht_addr {
__be32 ip4;
#if IS_ENABLED(CONFIG_IPV6)
@@ -47,6 +49,7 @@ struct net_bridge_group_eht_set {
struct net_bridge_mcast_gc mcast_gc;
};
+#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
void br_multicast_eht_clean_sets(struct net_bridge_port_group *pg);
bool br_multicast_eht_handle(struct net_bridge_port_group *pg,
void *h_addr,
@@ -54,6 +57,8 @@ bool br_multicast_eht_handle(struct net_bridge_port_group *pg,
u32 nsrcs,
size_t addr_size,
int grec_type);
+int br_multicast_eht_set_hosts_limit(struct net_bridge_port *p,
+ u32 eht_hosts_limit);
static inline bool
br_multicast_eht_should_del_pg(const struct net_bridge_port_group *pg)
@@ -62,4 +67,27 @@ br_multicast_eht_should_del_pg(const struct net_bridge_port_group *pg)
RB_EMPTY_ROOT(&pg->eht_host_tree));
}
+static inline bool
+br_multicast_eht_hosts_over_limit(const struct net_bridge_port_group *pg)
+{
+ const struct net_bridge_port *p = pg->key.port;
+
+ return !!(p->multicast_eht_hosts_cnt >= p->multicast_eht_hosts_limit);
+}
+
+static inline void br_multicast_eht_hosts_inc(struct net_bridge_port_group *pg)
+{
+ struct net_bridge_port *p = pg->key.port;
+
+ p->multicast_eht_hosts_cnt++;
+}
+
+static inline void br_multicast_eht_hosts_dec(struct net_bridge_port_group *pg)
+{
+ struct net_bridge_port *p = pg->key.port;
+
+ p->multicast_eht_hosts_cnt--;
+}
+#endif /* CONFIG_BRIDGE_IGMP_SNOOPING */
+
#endif /* _BR_PRIVATE_MCAST_EHT_H_ */
diff --git a/net/bridge/br_sysfs_if.c b/net/bridge/br_sysfs_if.c
index 7a59cdddd3ce..b66305fae26b 100644
--- a/net/bridge/br_sysfs_if.c
+++ b/net/bridge/br_sysfs_if.c
@@ -16,6 +16,7 @@
#include <linux/sched/signal.h>
#include "br_private.h"
+#include "br_private_mcast_eht.h"
struct brport_attribute {
struct attribute attr;
@@ -245,6 +246,29 @@ static int store_multicast_router(struct net_bridge_port *p,
static BRPORT_ATTR(multicast_router, 0644, show_multicast_router,
store_multicast_router);
+static ssize_t show_multicast_eht_hosts_limit(struct net_bridge_port *p,
+ char *buf)
+{
+ return sprintf(buf, "%u\n", p->multicast_eht_hosts_limit);
+}
+
+static int store_multicast_eht_hosts_limit(struct net_bridge_port *p,
+ unsigned long v)
+{
+ return br_multicast_eht_set_hosts_limit(p, v);
+}
+static BRPORT_ATTR(multicast_eht_hosts_limit, 0644,
+ show_multicast_eht_hosts_limit,
+ store_multicast_eht_hosts_limit);
+
+static ssize_t show_multicast_eht_hosts_cnt(struct net_bridge_port *p,
+ char *buf)
+{
+ return sprintf(buf, "%u\n", p->multicast_eht_hosts_cnt);
+}
+static BRPORT_ATTR(multicast_eht_hosts_cnt, 0444, show_multicast_eht_hosts_cnt,
+ NULL);
+
BRPORT_ATTR_FLAG(multicast_fast_leave, BR_MULTICAST_FAST_LEAVE);
BRPORT_ATTR_FLAG(multicast_to_unicast, BR_MULTICAST_TO_UNICAST);
#endif
@@ -274,6 +298,8 @@ static const struct brport_attribute *brport_attrs[] = {
&brport_attr_multicast_router,
&brport_attr_multicast_fast_leave,
&brport_attr_multicast_to_unicast,
+ &brport_attr_multicast_eht_hosts_limit,
+ &brport_attr_multicast_eht_hosts_cnt,
#endif
&brport_attr_proxyarp,
&brport_attr_proxyarp_wifi,
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 3d6ab194d0f5..c313aaf2bce1 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -55,7 +55,7 @@
#include <net/net_namespace.h>
#define RTNL_MAX_TYPE 50
-#define RTNL_SLAVE_MAX_TYPE 36
+#define RTNL_SLAVE_MAX_TYPE 40
struct rtnl_link {
rtnl_doit_func doit;
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-04 05:33:53 +0000