mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 10:49:33 +00:00
![Jouni Malinen](/assets/img/avatar_default.png)
This extends the design in commit 958501163d
("bridge: Add support for
IEEE 802.11 Proxy ARP") with optional set of rules that are needed to
meet the IEEE 802.11 and Hotspot 2.0 requirements for ProxyARP. The
previously added BR_PROXYARP behavior is left as-is and a new
BR_PROXYARP_WIFI alternative is added so that this behavior can be
configured from user space when required.
In addition, this enables proxyarp functionality for unicast ARP
requests for both BR_PROXYARP and BR_PROXYARP_WIFI since it is possible
to use unicast as well as broadcast for these frames.
The key differences in functionality:
BR_PROXYARP:
- uses the flag on the bridge port on which the request frame was
received to determine whether to reply
- block bridge port flooding completely on ports that enable proxy ARP
BR_PROXYARP_WIFI:
- uses the flag on the bridge port to which the target device of the
request belongs
- block bridge port flooding selectively based on whether the proxyarp
functionality replied
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
77 lines
1.9 KiB
C
77 lines
1.9 KiB
C
/*
|
|
* Linux ethernet bridge
|
|
*
|
|
* Authors:
|
|
* Lennert Buytenhek <buytenh@gnu.org>
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*/
|
|
#ifndef _LINUX_IF_BRIDGE_H
|
|
#define _LINUX_IF_BRIDGE_H
|
|
|
|
|
|
#include <linux/netdevice.h>
|
|
#include <uapi/linux/if_bridge.h>
|
|
#include <linux/bitops.h>
|
|
|
|
struct br_ip {
|
|
union {
|
|
__be32 ip4;
|
|
#if IS_ENABLED(CONFIG_IPV6)
|
|
struct in6_addr ip6;
|
|
#endif
|
|
} u;
|
|
__be16 proto;
|
|
__u16 vid;
|
|
};
|
|
|
|
struct br_ip_list {
|
|
struct list_head list;
|
|
struct br_ip addr;
|
|
};
|
|
|
|
#define BR_HAIRPIN_MODE BIT(0)
|
|
#define BR_BPDU_GUARD BIT(1)
|
|
#define BR_ROOT_BLOCK BIT(2)
|
|
#define BR_MULTICAST_FAST_LEAVE BIT(3)
|
|
#define BR_ADMIN_COST BIT(4)
|
|
#define BR_LEARNING BIT(5)
|
|
#define BR_FLOOD BIT(6)
|
|
#define BR_AUTO_MASK (BR_FLOOD | BR_LEARNING)
|
|
#define BR_PROMISC BIT(7)
|
|
#define BR_PROXYARP BIT(8)
|
|
#define BR_LEARNING_SYNC BIT(9)
|
|
#define BR_PROXYARP_WIFI BIT(10)
|
|
|
|
extern void brioctl_set(int (*ioctl_hook)(struct net *, unsigned int, void __user *));
|
|
|
|
typedef int br_should_route_hook_t(struct sk_buff *skb);
|
|
extern br_should_route_hook_t __rcu *br_should_route_hook;
|
|
|
|
#if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING)
|
|
int br_multicast_list_adjacent(struct net_device *dev,
|
|
struct list_head *br_ip_list);
|
|
bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto);
|
|
bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto);
|
|
#else
|
|
static inline int br_multicast_list_adjacent(struct net_device *dev,
|
|
struct list_head *br_ip_list)
|
|
{
|
|
return 0;
|
|
}
|
|
static inline bool br_multicast_has_querier_anywhere(struct net_device *dev,
|
|
int proto)
|
|
{
|
|
return false;
|
|
}
|
|
static inline bool br_multicast_has_querier_adjacent(struct net_device *dev,
|
|
int proto)
|
|
{
|
|
return false;
|
|
}
|
|
#endif
|
|
|
|
#endif
|