![Nikolay Aleksandrov](/assets/img/avatar_default.png)
Add a new LINK_XSTATS_TYPE_BRIDGE attribute and implement the RTM_GETSTATS callbacks for IFLA_STATS_LINK_XSTATS (fill_linkxstats and get_linkxstats_size) in order to export the per-vlan stats. The paddings were added because soon these fields will be needed for per-port per-vlan stats (or something else if someone beats me to it) so avoiding at least a few more netlink attributes. Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
990 lines
27 KiB
C
990 lines
27 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 _BR_PRIVATE_H
|
|
#define _BR_PRIVATE_H
|
|
|
|
#include <linux/netdevice.h>
|
|
#include <linux/if_bridge.h>
|
|
#include <linux/netpoll.h>
|
|
#include <linux/u64_stats_sync.h>
|
|
#include <net/route.h>
|
|
#include <net/ip6_fib.h>
|
|
#include <linux/if_vlan.h>
|
|
#include <linux/rhashtable.h>
|
|
|
|
#define BR_HASH_BITS 8
|
|
#define BR_HASH_SIZE (1 << BR_HASH_BITS)
|
|
|
|
#define BR_HOLD_TIME (1*HZ)
|
|
|
|
#define BR_PORT_BITS 10
|
|
#define BR_MAX_PORTS (1<<BR_PORT_BITS)
|
|
|
|
#define BR_VERSION "2.3"
|
|
|
|
/* Control of forwarding link local multicast */
|
|
#define BR_GROUPFWD_DEFAULT 0
|
|
/* Don't allow forwarding of control protocols like STP, MAC PAUSE and LACP */
|
|
#define BR_GROUPFWD_RESTRICTED 0x0007u
|
|
/* The Nearest Customer Bridge Group Address, 01-80-C2-00-00-[00,0B,0C,0D,0F] */
|
|
#define BR_GROUPFWD_8021AD 0xB801u
|
|
|
|
/* Path to usermode spanning tree program */
|
|
#define BR_STP_PROG "/sbin/bridge-stp"
|
|
|
|
typedef struct bridge_id bridge_id;
|
|
typedef struct mac_addr mac_addr;
|
|
typedef __u16 port_id;
|
|
|
|
struct bridge_id
|
|
{
|
|
unsigned char prio[2];
|
|
unsigned char addr[ETH_ALEN];
|
|
};
|
|
|
|
struct mac_addr
|
|
{
|
|
unsigned char addr[ETH_ALEN];
|
|
};
|
|
|
|
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
|
|
/* our own querier */
|
|
struct bridge_mcast_own_query {
|
|
struct timer_list timer;
|
|
u32 startup_sent;
|
|
};
|
|
|
|
/* other querier */
|
|
struct bridge_mcast_other_query {
|
|
struct timer_list timer;
|
|
unsigned long delay_time;
|
|
};
|
|
|
|
/* selected querier */
|
|
struct bridge_mcast_querier {
|
|
struct br_ip addr;
|
|
struct net_bridge_port __rcu *port;
|
|
};
|
|
#endif
|
|
|
|
struct br_vlan_stats {
|
|
u64 rx_bytes;
|
|
u64 rx_packets;
|
|
u64 tx_bytes;
|
|
u64 tx_packets;
|
|
struct u64_stats_sync syncp;
|
|
};
|
|
|
|
/**
|
|
* struct net_bridge_vlan - per-vlan entry
|
|
*
|
|
* @vnode: rhashtable member
|
|
* @vid: VLAN id
|
|
* @flags: bridge vlan flags
|
|
* @stats: per-cpu VLAN statistics
|
|
* @br: if MASTER flag set, this points to a bridge struct
|
|
* @port: if MASTER flag unset, this points to a port struct
|
|
* @refcnt: if MASTER flag set, this is bumped for each port referencing it
|
|
* @brvlan: if MASTER flag unset, this points to the global per-VLAN context
|
|
* for this VLAN entry
|
|
* @vlist: sorted list of VLAN entries
|
|
* @rcu: used for entry destruction
|
|
*
|
|
* This structure is shared between the global per-VLAN entries contained in
|
|
* the bridge rhashtable and the local per-port per-VLAN entries contained in
|
|
* the port's rhashtable. The union entries should be interpreted depending on
|
|
* the entry flags that are set.
|
|
*/
|
|
struct net_bridge_vlan {
|
|
struct rhash_head vnode;
|
|
u16 vid;
|
|
u16 flags;
|
|
struct br_vlan_stats __percpu *stats;
|
|
union {
|
|
struct net_bridge *br;
|
|
struct net_bridge_port *port;
|
|
};
|
|
union {
|
|
atomic_t refcnt;
|
|
struct net_bridge_vlan *brvlan;
|
|
};
|
|
struct list_head vlist;
|
|
|
|
struct rcu_head rcu;
|
|
};
|
|
|
|
/**
|
|
* struct net_bridge_vlan_group
|
|
*
|
|
* @vlan_hash: VLAN entry rhashtable
|
|
* @vlan_list: sorted VLAN entry list
|
|
* @num_vlans: number of total VLAN entries
|
|
* @pvid: PVID VLAN id
|
|
*
|
|
* IMPORTANT: Be careful when checking if there're VLAN entries using list
|
|
* primitives because the bridge can have entries in its list which
|
|
* are just for global context but not for filtering, i.e. they have
|
|
* the master flag set but not the brentry flag. If you have to check
|
|
* if there're "real" entries in the bridge please test @num_vlans
|
|
*/
|
|
struct net_bridge_vlan_group {
|
|
struct rhashtable vlan_hash;
|
|
struct list_head vlan_list;
|
|
u16 num_vlans;
|
|
u16 pvid;
|
|
};
|
|
|
|
struct net_bridge_fdb_entry
|
|
{
|
|
struct hlist_node hlist;
|
|
struct net_bridge_port *dst;
|
|
|
|
unsigned long updated;
|
|
unsigned long used;
|
|
mac_addr addr;
|
|
__u16 vlan_id;
|
|
unsigned char is_local:1,
|
|
is_static:1,
|
|
added_by_user:1,
|
|
added_by_external_learn:1;
|
|
struct rcu_head rcu;
|
|
};
|
|
|
|
#define MDB_PG_FLAGS_PERMANENT BIT(0)
|
|
#define MDB_PG_FLAGS_OFFLOAD BIT(1)
|
|
|
|
struct net_bridge_port_group {
|
|
struct net_bridge_port *port;
|
|
struct net_bridge_port_group __rcu *next;
|
|
struct hlist_node mglist;
|
|
struct rcu_head rcu;
|
|
struct timer_list timer;
|
|
struct br_ip addr;
|
|
unsigned char flags;
|
|
};
|
|
|
|
struct net_bridge_mdb_entry
|
|
{
|
|
struct hlist_node hlist[2];
|
|
struct net_bridge *br;
|
|
struct net_bridge_port_group __rcu *ports;
|
|
struct rcu_head rcu;
|
|
struct timer_list timer;
|
|
struct br_ip addr;
|
|
bool mglist;
|
|
};
|
|
|
|
struct net_bridge_mdb_htable
|
|
{
|
|
struct hlist_head *mhash;
|
|
struct rcu_head rcu;
|
|
struct net_bridge_mdb_htable *old;
|
|
u32 size;
|
|
u32 max;
|
|
u32 secret;
|
|
u32 ver;
|
|
};
|
|
|
|
struct net_bridge_port
|
|
{
|
|
struct net_bridge *br;
|
|
struct net_device *dev;
|
|
struct list_head list;
|
|
|
|
/* STP */
|
|
u8 priority;
|
|
u8 state;
|
|
u16 port_no;
|
|
unsigned char topology_change_ack;
|
|
unsigned char config_pending;
|
|
port_id port_id;
|
|
port_id designated_port;
|
|
bridge_id designated_root;
|
|
bridge_id designated_bridge;
|
|
u32 path_cost;
|
|
u32 designated_cost;
|
|
unsigned long designated_age;
|
|
|
|
struct timer_list forward_delay_timer;
|
|
struct timer_list hold_timer;
|
|
struct timer_list message_age_timer;
|
|
struct kobject kobj;
|
|
struct rcu_head rcu;
|
|
|
|
unsigned long flags;
|
|
|
|
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
|
|
struct bridge_mcast_own_query ip4_own_query;
|
|
#if IS_ENABLED(CONFIG_IPV6)
|
|
struct bridge_mcast_own_query ip6_own_query;
|
|
#endif /* IS_ENABLED(CONFIG_IPV6) */
|
|
unsigned char multicast_router;
|
|
struct timer_list multicast_router_timer;
|
|
struct hlist_head mglist;
|
|
struct hlist_node rlist;
|
|
#endif
|
|
|
|
#ifdef CONFIG_SYSFS
|
|
char sysfs_name[IFNAMSIZ];
|
|
#endif
|
|
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
struct netpoll *np;
|
|
#endif
|
|
#ifdef CONFIG_BRIDGE_VLAN_FILTERING
|
|
struct net_bridge_vlan_group __rcu *vlgrp;
|
|
#endif
|
|
};
|
|
|
|
#define br_auto_port(p) ((p)->flags & BR_AUTO_MASK)
|
|
#define br_promisc_port(p) ((p)->flags & BR_PROMISC)
|
|
|
|
#define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT)
|
|
|
|
static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev)
|
|
{
|
|
return rcu_dereference(dev->rx_handler_data);
|
|
}
|
|
|
|
static inline struct net_bridge_port *br_port_get_rtnl(const struct net_device *dev)
|
|
{
|
|
return br_port_exists(dev) ?
|
|
rtnl_dereference(dev->rx_handler_data) : NULL;
|
|
}
|
|
|
|
struct net_bridge
|
|
{
|
|
spinlock_t lock;
|
|
struct list_head port_list;
|
|
struct net_device *dev;
|
|
|
|
struct pcpu_sw_netstats __percpu *stats;
|
|
spinlock_t hash_lock;
|
|
struct hlist_head hash[BR_HASH_SIZE];
|
|
#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
|
|
union {
|
|
struct rtable fake_rtable;
|
|
struct rt6_info fake_rt6_info;
|
|
};
|
|
bool nf_call_iptables;
|
|
bool nf_call_ip6tables;
|
|
bool nf_call_arptables;
|
|
#endif
|
|
u16 group_fwd_mask;
|
|
u16 group_fwd_mask_required;
|
|
|
|
/* STP */
|
|
bridge_id designated_root;
|
|
bridge_id bridge_id;
|
|
u32 root_path_cost;
|
|
unsigned long max_age;
|
|
unsigned long hello_time;
|
|
unsigned long forward_delay;
|
|
unsigned long bridge_max_age;
|
|
unsigned long ageing_time;
|
|
unsigned long bridge_hello_time;
|
|
unsigned long bridge_forward_delay;
|
|
|
|
u8 group_addr[ETH_ALEN];
|
|
bool group_addr_set;
|
|
u16 root_port;
|
|
|
|
enum {
|
|
BR_NO_STP, /* no spanning tree */
|
|
BR_KERNEL_STP, /* old STP in kernel */
|
|
BR_USER_STP, /* new RSTP in userspace */
|
|
} stp_enabled;
|
|
|
|
unsigned char topology_change;
|
|
unsigned char topology_change_detected;
|
|
|
|
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
|
|
unsigned char multicast_router;
|
|
|
|
u8 multicast_disabled:1;
|
|
u8 multicast_querier:1;
|
|
u8 multicast_query_use_ifaddr:1;
|
|
|
|
u32 hash_elasticity;
|
|
u32 hash_max;
|
|
|
|
u32 multicast_last_member_count;
|
|
u32 multicast_startup_query_count;
|
|
|
|
unsigned long multicast_last_member_interval;
|
|
unsigned long multicast_membership_interval;
|
|
unsigned long multicast_querier_interval;
|
|
unsigned long multicast_query_interval;
|
|
unsigned long multicast_query_response_interval;
|
|
unsigned long multicast_startup_query_interval;
|
|
|
|
spinlock_t multicast_lock;
|
|
struct net_bridge_mdb_htable __rcu *mdb;
|
|
struct hlist_head router_list;
|
|
|
|
struct timer_list multicast_router_timer;
|
|
struct bridge_mcast_other_query ip4_other_query;
|
|
struct bridge_mcast_own_query ip4_own_query;
|
|
struct bridge_mcast_querier ip4_querier;
|
|
#if IS_ENABLED(CONFIG_IPV6)
|
|
struct bridge_mcast_other_query ip6_other_query;
|
|
struct bridge_mcast_own_query ip6_own_query;
|
|
struct bridge_mcast_querier ip6_querier;
|
|
#endif /* IS_ENABLED(CONFIG_IPV6) */
|
|
#endif
|
|
|
|
struct timer_list hello_timer;
|
|
struct timer_list tcn_timer;
|
|
struct timer_list topology_change_timer;
|
|
struct timer_list gc_timer;
|
|
struct kobject *ifobj;
|
|
u32 auto_cnt;
|
|
#ifdef CONFIG_BRIDGE_VLAN_FILTERING
|
|
struct net_bridge_vlan_group __rcu *vlgrp;
|
|
u8 vlan_enabled;
|
|
u8 vlan_stats_enabled;
|
|
__be16 vlan_proto;
|
|
u16 default_pvid;
|
|
#endif
|
|
};
|
|
|
|
struct br_input_skb_cb {
|
|
struct net_device *brdev;
|
|
|
|
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
|
|
int igmp;
|
|
int mrouters_only;
|
|
#endif
|
|
|
|
bool proxyarp_replied;
|
|
|
|
#ifdef CONFIG_BRIDGE_VLAN_FILTERING
|
|
bool vlan_filtered;
|
|
#endif
|
|
};
|
|
|
|
#define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb)
|
|
|
|
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
|
|
# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only)
|
|
#else
|
|
# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0)
|
|
#endif
|
|
|
|
#define br_printk(level, br, format, args...) \
|
|
printk(level "%s: " format, (br)->dev->name, ##args)
|
|
|
|
#define br_err(__br, format, args...) \
|
|
br_printk(KERN_ERR, __br, format, ##args)
|
|
#define br_warn(__br, format, args...) \
|
|
br_printk(KERN_WARNING, __br, format, ##args)
|
|
#define br_notice(__br, format, args...) \
|
|
br_printk(KERN_NOTICE, __br, format, ##args)
|
|
#define br_info(__br, format, args...) \
|
|
br_printk(KERN_INFO, __br, format, ##args)
|
|
|
|
#define br_debug(br, format, args...) \
|
|
pr_debug("%s: " format, (br)->dev->name, ##args)
|
|
|
|
/* called under bridge lock */
|
|
static inline int br_is_root_bridge(const struct net_bridge *br)
|
|
{
|
|
return !memcmp(&br->bridge_id, &br->designated_root, 8);
|
|
}
|
|
|
|
/* check if a VLAN entry is global */
|
|
static inline bool br_vlan_is_master(const struct net_bridge_vlan *v)
|
|
{
|
|
return v->flags & BRIDGE_VLAN_INFO_MASTER;
|
|
}
|
|
|
|
/* check if a VLAN entry is used by the bridge */
|
|
static inline bool br_vlan_is_brentry(const struct net_bridge_vlan *v)
|
|
{
|
|
return v->flags & BRIDGE_VLAN_INFO_BRENTRY;
|
|
}
|
|
|
|
/* check if we should use the vlan entry, returns false if it's only context */
|
|
static inline bool br_vlan_should_use(const struct net_bridge_vlan *v)
|
|
{
|
|
if (br_vlan_is_master(v)) {
|
|
if (br_vlan_is_brentry(v))
|
|
return true;
|
|
else
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/* br_device.c */
|
|
void br_dev_setup(struct net_device *dev);
|
|
void br_dev_delete(struct net_device *dev, struct list_head *list);
|
|
netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev);
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct netpoll *np = p->np;
|
|
|
|
if (np)
|
|
netpoll_send_skb(np, skb);
|
|
}
|
|
|
|
int br_netpoll_enable(struct net_bridge_port *p);
|
|
void br_netpoll_disable(struct net_bridge_port *p);
|
|
#else
|
|
static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
|
|
struct sk_buff *skb)
|
|
{
|
|
}
|
|
|
|
static inline int br_netpoll_enable(struct net_bridge_port *p)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void br_netpoll_disable(struct net_bridge_port *p)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
/* br_fdb.c */
|
|
int br_fdb_init(void);
|
|
void br_fdb_fini(void);
|
|
void br_fdb_flush(struct net_bridge *br);
|
|
void br_fdb_find_delete_local(struct net_bridge *br,
|
|
const struct net_bridge_port *p,
|
|
const unsigned char *addr, u16 vid);
|
|
void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr);
|
|
void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr);
|
|
void br_fdb_cleanup(unsigned long arg);
|
|
void br_fdb_delete_by_port(struct net_bridge *br,
|
|
const struct net_bridge_port *p, u16 vid, int do_all);
|
|
struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br,
|
|
const unsigned char *addr, __u16 vid);
|
|
int br_fdb_test_addr(struct net_device *dev, unsigned char *addr);
|
|
int br_fdb_fillbuf(struct net_bridge *br, void *buf, unsigned long count,
|
|
unsigned long off);
|
|
int br_fdb_insert(struct net_bridge *br, struct net_bridge_port *source,
|
|
const unsigned char *addr, u16 vid);
|
|
void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
|
|
const unsigned char *addr, u16 vid, bool added_by_user);
|
|
|
|
int br_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
|
|
struct net_device *dev, const unsigned char *addr, u16 vid);
|
|
int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], struct net_device *dev,
|
|
const unsigned char *addr, u16 vid, u16 nlh_flags);
|
|
int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
|
|
struct net_device *dev, struct net_device *fdev, int idx);
|
|
int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p);
|
|
void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p);
|
|
int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p,
|
|
const unsigned char *addr, u16 vid);
|
|
int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p,
|
|
const unsigned char *addr, u16 vid);
|
|
|
|
/* br_forward.c */
|
|
void br_deliver(const struct net_bridge_port *to, struct sk_buff *skb);
|
|
int br_dev_queue_push_xmit(struct net *net, struct sock *sk, struct sk_buff *skb);
|
|
void br_forward(const struct net_bridge_port *to,
|
|
struct sk_buff *skb, struct sk_buff *skb0);
|
|
int br_forward_finish(struct net *net, struct sock *sk, struct sk_buff *skb);
|
|
void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb, bool unicast);
|
|
void br_flood_forward(struct net_bridge *br, struct sk_buff *skb,
|
|
struct sk_buff *skb2, bool unicast);
|
|
|
|
/* br_if.c */
|
|
void br_port_carrier_check(struct net_bridge_port *p);
|
|
int br_add_bridge(struct net *net, const char *name);
|
|
int br_del_bridge(struct net *net, const char *name);
|
|
int br_add_if(struct net_bridge *br, struct net_device *dev);
|
|
int br_del_if(struct net_bridge *br, struct net_device *dev);
|
|
int br_min_mtu(const struct net_bridge *br);
|
|
netdev_features_t br_features_recompute(struct net_bridge *br,
|
|
netdev_features_t features);
|
|
void br_port_flags_change(struct net_bridge_port *port, unsigned long mask);
|
|
void br_manage_promisc(struct net_bridge *br);
|
|
|
|
/* br_input.c */
|
|
int br_handle_frame_finish(struct net *net, struct sock *sk, struct sk_buff *skb);
|
|
rx_handler_result_t br_handle_frame(struct sk_buff **pskb);
|
|
|
|
static inline bool br_rx_handler_check_rcu(const struct net_device *dev)
|
|
{
|
|
return rcu_dereference(dev->rx_handler) == br_handle_frame;
|
|
}
|
|
|
|
static inline struct net_bridge_port *br_port_get_check_rcu(const struct net_device *dev)
|
|
{
|
|
return br_rx_handler_check_rcu(dev) ? br_port_get_rcu(dev) : NULL;
|
|
}
|
|
|
|
/* br_ioctl.c */
|
|
int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
|
|
int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd,
|
|
void __user *arg);
|
|
|
|
/* br_multicast.c */
|
|
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
|
|
extern unsigned int br_mdb_rehash_seq;
|
|
int br_multicast_rcv(struct net_bridge *br, struct net_bridge_port *port,
|
|
struct sk_buff *skb, u16 vid);
|
|
struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
|
|
struct sk_buff *skb, u16 vid);
|
|
void br_multicast_add_port(struct net_bridge_port *port);
|
|
void br_multicast_del_port(struct net_bridge_port *port);
|
|
void br_multicast_enable_port(struct net_bridge_port *port);
|
|
void br_multicast_disable_port(struct net_bridge_port *port);
|
|
void br_multicast_init(struct net_bridge *br);
|
|
void br_multicast_open(struct net_bridge *br);
|
|
void br_multicast_stop(struct net_bridge *br);
|
|
void br_multicast_dev_del(struct net_bridge *br);
|
|
void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
|
|
struct sk_buff *skb);
|
|
void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
|
|
struct sk_buff *skb, struct sk_buff *skb2);
|
|
int br_multicast_set_router(struct net_bridge *br, unsigned long val);
|
|
int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val);
|
|
int br_multicast_toggle(struct net_bridge *br, unsigned long val);
|
|
int br_multicast_set_querier(struct net_bridge *br, unsigned long val);
|
|
int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val);
|
|
struct net_bridge_mdb_entry *
|
|
br_mdb_ip_get(struct net_bridge_mdb_htable *mdb, struct br_ip *dst);
|
|
struct net_bridge_mdb_entry *
|
|
br_multicast_new_group(struct net_bridge *br, struct net_bridge_port *port,
|
|
struct br_ip *group);
|
|
void br_multicast_free_pg(struct rcu_head *head);
|
|
struct net_bridge_port_group *
|
|
br_multicast_new_port_group(struct net_bridge_port *port, struct br_ip *group,
|
|
struct net_bridge_port_group __rcu *next,
|
|
unsigned char flags);
|
|
void br_mdb_init(void);
|
|
void br_mdb_uninit(void);
|
|
void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port,
|
|
struct br_ip *group, int type, u8 flags);
|
|
void br_rtr_notify(struct net_device *dev, struct net_bridge_port *port,
|
|
int type);
|
|
|
|
#define mlock_dereference(X, br) \
|
|
rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock))
|
|
|
|
static inline bool br_multicast_is_router(struct net_bridge *br)
|
|
{
|
|
return br->multicast_router == 2 ||
|
|
(br->multicast_router == 1 &&
|
|
timer_pending(&br->multicast_router_timer));
|
|
}
|
|
|
|
static inline bool
|
|
__br_multicast_querier_exists(struct net_bridge *br,
|
|
struct bridge_mcast_other_query *querier)
|
|
{
|
|
return time_is_before_jiffies(querier->delay_time) &&
|
|
(br->multicast_querier || timer_pending(&querier->timer));
|
|
}
|
|
|
|
static inline bool br_multicast_querier_exists(struct net_bridge *br,
|
|
struct ethhdr *eth)
|
|
{
|
|
switch (eth->h_proto) {
|
|
case (htons(ETH_P_IP)):
|
|
return __br_multicast_querier_exists(br, &br->ip4_other_query);
|
|
#if IS_ENABLED(CONFIG_IPV6)
|
|
case (htons(ETH_P_IPV6)):
|
|
return __br_multicast_querier_exists(br, &br->ip6_other_query);
|
|
#endif
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
#else
|
|
static inline int br_multicast_rcv(struct net_bridge *br,
|
|
struct net_bridge_port *port,
|
|
struct sk_buff *skb,
|
|
u16 vid)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
|
|
struct sk_buff *skb, u16 vid)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline void br_multicast_add_port(struct net_bridge_port *port)
|
|
{
|
|
}
|
|
|
|
static inline void br_multicast_del_port(struct net_bridge_port *port)
|
|
{
|
|
}
|
|
|
|
static inline void br_multicast_enable_port(struct net_bridge_port *port)
|
|
{
|
|
}
|
|
|
|
static inline void br_multicast_disable_port(struct net_bridge_port *port)
|
|
{
|
|
}
|
|
|
|
static inline void br_multicast_init(struct net_bridge *br)
|
|
{
|
|
}
|
|
|
|
static inline void br_multicast_open(struct net_bridge *br)
|
|
{
|
|
}
|
|
|
|
static inline void br_multicast_stop(struct net_bridge *br)
|
|
{
|
|
}
|
|
|
|
static inline void br_multicast_dev_del(struct net_bridge *br)
|
|
{
|
|
}
|
|
|
|
static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
|
|
struct sk_buff *skb)
|
|
{
|
|
}
|
|
|
|
static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
|
|
struct sk_buff *skb,
|
|
struct sk_buff *skb2)
|
|
{
|
|
}
|
|
static inline bool br_multicast_is_router(struct net_bridge *br)
|
|
{
|
|
return 0;
|
|
}
|
|
static inline bool br_multicast_querier_exists(struct net_bridge *br,
|
|
struct ethhdr *eth)
|
|
{
|
|
return false;
|
|
}
|
|
static inline void br_mdb_init(void)
|
|
{
|
|
}
|
|
static inline void br_mdb_uninit(void)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
/* br_vlan.c */
|
|
#ifdef CONFIG_BRIDGE_VLAN_FILTERING
|
|
bool br_allowed_ingress(const struct net_bridge *br,
|
|
struct net_bridge_vlan_group *vg, struct sk_buff *skb,
|
|
u16 *vid);
|
|
bool br_allowed_egress(struct net_bridge_vlan_group *vg,
|
|
const struct sk_buff *skb);
|
|
bool br_should_learn(struct net_bridge_port *p, struct sk_buff *skb, u16 *vid);
|
|
struct sk_buff *br_handle_vlan(struct net_bridge *br,
|
|
struct net_bridge_vlan_group *vg,
|
|
struct sk_buff *skb);
|
|
int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags);
|
|
int br_vlan_delete(struct net_bridge *br, u16 vid);
|
|
void br_vlan_flush(struct net_bridge *br);
|
|
struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg, u16 vid);
|
|
void br_recalculate_fwd_mask(struct net_bridge *br);
|
|
int __br_vlan_filter_toggle(struct net_bridge *br, unsigned long val);
|
|
int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val);
|
|
int __br_vlan_set_proto(struct net_bridge *br, __be16 proto);
|
|
int br_vlan_set_proto(struct net_bridge *br, unsigned long val);
|
|
int br_vlan_set_stats(struct net_bridge *br, unsigned long val);
|
|
int br_vlan_init(struct net_bridge *br);
|
|
int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val);
|
|
int __br_vlan_set_default_pvid(struct net_bridge *br, u16 pvid);
|
|
int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags);
|
|
int nbp_vlan_delete(struct net_bridge_port *port, u16 vid);
|
|
void nbp_vlan_flush(struct net_bridge_port *port);
|
|
int nbp_vlan_init(struct net_bridge_port *port);
|
|
int nbp_get_num_vlan_infos(struct net_bridge_port *p, u32 filter_mask);
|
|
void br_vlan_get_stats(const struct net_bridge_vlan *v,
|
|
struct br_vlan_stats *stats);
|
|
|
|
static inline struct net_bridge_vlan_group *br_vlan_group(
|
|
const struct net_bridge *br)
|
|
{
|
|
return rtnl_dereference(br->vlgrp);
|
|
}
|
|
|
|
static inline struct net_bridge_vlan_group *nbp_vlan_group(
|
|
const struct net_bridge_port *p)
|
|
{
|
|
return rtnl_dereference(p->vlgrp);
|
|
}
|
|
|
|
static inline struct net_bridge_vlan_group *br_vlan_group_rcu(
|
|
const struct net_bridge *br)
|
|
{
|
|
return rcu_dereference(br->vlgrp);
|
|
}
|
|
|
|
static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu(
|
|
const struct net_bridge_port *p)
|
|
{
|
|
return rcu_dereference(p->vlgrp);
|
|
}
|
|
|
|
/* Since bridge now depends on 8021Q module, but the time bridge sees the
|
|
* skb, the vlan tag will always be present if the frame was tagged.
|
|
*/
|
|
static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid)
|
|
{
|
|
int err = 0;
|
|
|
|
if (skb_vlan_tag_present(skb)) {
|
|
*vid = skb_vlan_tag_get(skb) & VLAN_VID_MASK;
|
|
} else {
|
|
*vid = 0;
|
|
err = -EINVAL;
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg)
|
|
{
|
|
if (!vg)
|
|
return 0;
|
|
|
|
smp_rmb();
|
|
return vg->pvid;
|
|
}
|
|
|
|
static inline int br_vlan_enabled(struct net_bridge *br)
|
|
{
|
|
return br->vlan_enabled;
|
|
}
|
|
#else
|
|
static inline bool br_allowed_ingress(const struct net_bridge *br,
|
|
struct net_bridge_vlan_group *vg,
|
|
struct sk_buff *skb,
|
|
u16 *vid)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
static inline bool br_allowed_egress(struct net_bridge_vlan_group *vg,
|
|
const struct sk_buff *skb)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
static inline bool br_should_learn(struct net_bridge_port *p,
|
|
struct sk_buff *skb, u16 *vid)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
static inline struct sk_buff *br_handle_vlan(struct net_bridge *br,
|
|
struct net_bridge_vlan_group *vg,
|
|
struct sk_buff *skb)
|
|
{
|
|
return skb;
|
|
}
|
|
|
|
static inline int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags)
|
|
{
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static inline int br_vlan_delete(struct net_bridge *br, u16 vid)
|
|
{
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static inline void br_vlan_flush(struct net_bridge *br)
|
|
{
|
|
}
|
|
|
|
static inline void br_recalculate_fwd_mask(struct net_bridge *br)
|
|
{
|
|
}
|
|
|
|
static inline int br_vlan_init(struct net_bridge *br)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid, u16 flags)
|
|
{
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid)
|
|
{
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static inline void nbp_vlan_flush(struct net_bridge_port *port)
|
|
{
|
|
}
|
|
|
|
static inline struct net_bridge_vlan *br_vlan_find(struct net_bridge_vlan_group *vg,
|
|
u16 vid)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline int nbp_vlan_init(struct net_bridge_port *port)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline u16 br_vlan_get_tag(const struct sk_buff *skb, u16 *tag)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline u16 br_get_pvid(const struct net_bridge_vlan_group *vg)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int br_vlan_enabled(struct net_bridge *br)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int __br_vlan_filter_toggle(struct net_bridge *br,
|
|
unsigned long val)
|
|
{
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static inline int nbp_get_num_vlan_infos(struct net_bridge_port *p,
|
|
u32 filter_mask)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline struct net_bridge_vlan_group *br_vlan_group(
|
|
const struct net_bridge *br)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline struct net_bridge_vlan_group *nbp_vlan_group(
|
|
const struct net_bridge_port *p)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline struct net_bridge_vlan_group *br_vlan_group_rcu(
|
|
const struct net_bridge *br)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline struct net_bridge_vlan_group *nbp_vlan_group_rcu(
|
|
const struct net_bridge_port *p)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline void br_vlan_get_stats(const struct net_bridge_vlan *v,
|
|
struct br_vlan_stats *stats)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
struct nf_br_ops {
|
|
int (*br_dev_xmit_hook)(struct sk_buff *skb);
|
|
};
|
|
extern const struct nf_br_ops __rcu *nf_br_ops;
|
|
|
|
/* br_netfilter.c */
|
|
#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
|
|
int br_nf_core_init(void);
|
|
void br_nf_core_fini(void);
|
|
void br_netfilter_rtable_init(struct net_bridge *);
|
|
#else
|
|
static inline int br_nf_core_init(void) { return 0; }
|
|
static inline void br_nf_core_fini(void) {}
|
|
#define br_netfilter_rtable_init(x)
|
|
#endif
|
|
|
|
/* br_stp.c */
|
|
void br_set_state(struct net_bridge_port *p, unsigned int state);
|
|
struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no);
|
|
void br_init_port(struct net_bridge_port *p);
|
|
void br_become_designated_port(struct net_bridge_port *p);
|
|
|
|
void __br_set_forward_delay(struct net_bridge *br, unsigned long t);
|
|
int br_set_forward_delay(struct net_bridge *br, unsigned long x);
|
|
int br_set_hello_time(struct net_bridge *br, unsigned long x);
|
|
int br_set_max_age(struct net_bridge *br, unsigned long x);
|
|
int br_set_ageing_time(struct net_bridge *br, u32 ageing_time);
|
|
|
|
|
|
/* br_stp_if.c */
|
|
void br_stp_enable_bridge(struct net_bridge *br);
|
|
void br_stp_disable_bridge(struct net_bridge *br);
|
|
void br_stp_set_enabled(struct net_bridge *br, unsigned long val);
|
|
void br_stp_enable_port(struct net_bridge_port *p);
|
|
void br_stp_disable_port(struct net_bridge_port *p);
|
|
bool br_stp_recalculate_bridge_id(struct net_bridge *br);
|
|
void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
|
|
void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio);
|
|
int br_stp_set_port_priority(struct net_bridge_port *p, unsigned long newprio);
|
|
int br_stp_set_path_cost(struct net_bridge_port *p, unsigned long path_cost);
|
|
ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
|
|
|
|
/* br_stp_bpdu.c */
|
|
struct stp_proto;
|
|
void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
|
|
struct net_device *dev);
|
|
|
|
/* br_stp_timer.c */
|
|
void br_stp_timer_init(struct net_bridge *br);
|
|
void br_stp_port_timer_init(struct net_bridge_port *p);
|
|
unsigned long br_timer_value(const struct timer_list *timer);
|
|
|
|
/* br.c */
|
|
#if IS_ENABLED(CONFIG_ATM_LANE)
|
|
extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr);
|
|
#endif
|
|
|
|
/* br_netlink.c */
|
|
extern struct rtnl_link_ops br_link_ops;
|
|
int br_netlink_init(void);
|
|
void br_netlink_fini(void);
|
|
void br_ifinfo_notify(int event, struct net_bridge_port *port);
|
|
int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags);
|
|
int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags);
|
|
int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev,
|
|
u32 filter_mask, int nlflags);
|
|
|
|
#ifdef CONFIG_SYSFS
|
|
/* br_sysfs_if.c */
|
|
extern const struct sysfs_ops brport_sysfs_ops;
|
|
int br_sysfs_addif(struct net_bridge_port *p);
|
|
int br_sysfs_renameif(struct net_bridge_port *p);
|
|
|
|
/* br_sysfs_br.c */
|
|
int br_sysfs_addbr(struct net_device *dev);
|
|
void br_sysfs_delbr(struct net_device *dev);
|
|
|
|
#else
|
|
|
|
static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; }
|
|
static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; }
|
|
static inline int br_sysfs_addbr(struct net_device *dev) { return 0; }
|
|
static inline void br_sysfs_delbr(struct net_device *dev) { return; }
|
|
#endif /* CONFIG_SYSFS */
|
|
|
|
#endif
|