99f906e9ad
Support for l2 multicast flood control was added in commit b6cb5ac833
("net: bridge: add per-port multicast flood flag"). It allows broadcast
as it was introduced specifically for unknown multicast flood control.
But as broadcast is a special case of multicast, this may also need to
be disabled. For this purpose, introduce a flag to disable the flooding
of received l2 broadcasts. This approach is backwards compatible and
provides flexibility in filtering for the desired packet types.
Cc: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: Mike Manning <mmanning@brocade.com>
Reviewed-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
84 lines
2.1 KiB
C
84 lines
2.1 KiB
C
/*
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* Linux ethernet bridge
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*
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* Authors:
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* Lennert Buytenhek <buytenh@gnu.org>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _LINUX_IF_BRIDGE_H
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#define _LINUX_IF_BRIDGE_H
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#include <linux/netdevice.h>
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#include <uapi/linux/if_bridge.h>
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#include <linux/bitops.h>
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struct br_ip {
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union {
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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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} u;
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__be16 proto;
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__u16 vid;
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};
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struct br_ip_list {
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struct list_head list;
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struct br_ip addr;
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};
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#define BR_HAIRPIN_MODE BIT(0)
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#define BR_BPDU_GUARD BIT(1)
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#define BR_ROOT_BLOCK BIT(2)
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#define BR_MULTICAST_FAST_LEAVE BIT(3)
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#define BR_ADMIN_COST BIT(4)
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#define BR_LEARNING BIT(5)
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#define BR_FLOOD BIT(6)
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#define BR_AUTO_MASK (BR_FLOOD | BR_LEARNING)
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#define BR_PROMISC BIT(7)
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#define BR_PROXYARP BIT(8)
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#define BR_LEARNING_SYNC BIT(9)
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#define BR_PROXYARP_WIFI BIT(10)
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#define BR_MCAST_FLOOD BIT(11)
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#define BR_MULTICAST_TO_UNICAST BIT(12)
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#define BR_VLAN_TUNNEL BIT(13)
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#define BR_BCAST_FLOOD BIT(14)
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#define BR_DEFAULT_AGEING_TIME (300 * HZ)
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extern void brioctl_set(int (*ioctl_hook)(struct net *, unsigned int, void __user *));
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typedef int br_should_route_hook_t(struct sk_buff *skb);
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extern br_should_route_hook_t __rcu *br_should_route_hook;
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#if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING)
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int br_multicast_list_adjacent(struct net_device *dev,
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struct list_head *br_ip_list);
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bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto);
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bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto);
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#else
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static inline int br_multicast_list_adjacent(struct net_device *dev,
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struct list_head *br_ip_list)
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{
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return 0;
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}
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static inline bool br_multicast_has_querier_anywhere(struct net_device *dev,
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int proto)
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{
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return false;
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}
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static inline bool br_multicast_has_querier_adjacent(struct net_device *dev,
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int proto)
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{
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return false;
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}
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#endif
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#endif
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