Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | #ifndef __LINUX_RTNETLINK_H |
2 | #define __LINUX_RTNETLINK_H | |
3 | ||
1da177e4 | 4 | |
6756ae4b | 5 | #include <linux/mutex.h> |
3b42a96d | 6 | #include <linux/netdevice.h> |
200b916f | 7 | #include <linux/wait.h> |
607ca46e | 8 | #include <uapi/linux/rtnetlink.h> |
1da177e4 | 9 | |
97c53cac DL |
10 | extern int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, u32 group, int echo); |
11 | extern int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid); | |
1ce85fe4 PNA |
12 | extern void rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid, |
13 | u32 group, struct nlmsghdr *nlh, gfp_t flags); | |
97c53cac | 14 | extern void rtnl_set_sk_err(struct net *net, u32 group, int error); |
1da177e4 | 15 | extern int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics); |
e3703b3d | 16 | extern int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst, |
87a50699 | 17 | u32 id, long expires, u32 error); |
1da177e4 | 18 | |
7f294054 | 19 | void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change, gfp_t flags); |
1da177e4 | 20 | |
6756ae4b | 21 | /* RTNL is used as a global lock for all changes to network configuration */ |
1da177e4 | 22 | extern void rtnl_lock(void); |
1da177e4 | 23 | extern void rtnl_unlock(void); |
6756ae4b | 24 | extern int rtnl_trylock(void); |
c9c1014b | 25 | extern int rtnl_is_locked(void); |
200b916f CW |
26 | |
27 | extern wait_queue_head_t netdev_unregistering_wq; | |
28 | extern struct mutex net_mutex; | |
29 | ||
a898def2 PM |
30 | #ifdef CONFIG_PROVE_LOCKING |
31 | extern int lockdep_rtnl_is_held(void); | |
85328240 JF |
32 | #else |
33 | static inline int lockdep_rtnl_is_held(void) | |
34 | { | |
35 | return 1; | |
36 | } | |
a898def2 | 37 | #endif /* #ifdef CONFIG_PROVE_LOCKING */ |
6756ae4b | 38 | |
a6e0fc85 ED |
39 | /** |
40 | * rcu_dereference_rtnl - rcu_dereference with debug checking | |
41 | * @p: The pointer to read, prior to dereferencing | |
42 | * | |
43 | * Do an rcu_dereference(p), but check caller either holds rcu_read_lock() | |
29fa060e | 44 | * or RTNL. Note : Please prefer rtnl_dereference() or rcu_dereference() |
a6e0fc85 ED |
45 | */ |
46 | #define rcu_dereference_rtnl(p) \ | |
d8bf4ca9 | 47 | rcu_dereference_check(p, lockdep_rtnl_is_held()) |
a6e0fc85 | 48 | |
331b7292 JF |
49 | /** |
50 | * rcu_dereference_bh_rtnl - rcu_dereference_bh with debug checking | |
51 | * @p: The pointer to read, prior to dereference | |
52 | * | |
53 | * Do an rcu_dereference_bh(p), but check caller either holds rcu_read_lock_bh() | |
54 | * or RTNL. Note : Please prefer rtnl_dereference() or rcu_dereference_bh() | |
55 | */ | |
56 | #define rcu_dereference_bh_rtnl(p) \ | |
57 | rcu_dereference_bh_check(p, lockdep_rtnl_is_held()) | |
58 | ||
7dff59ef | 59 | /** |
29fa060e | 60 | * rtnl_dereference - fetch RCU pointer when updates are prevented by RTNL |
7dff59ef ED |
61 | * @p: The pointer to read, prior to dereferencing |
62 | * | |
29fa060e DM |
63 | * Return the value of the specified RCU-protected pointer, but omit |
64 | * both the smp_read_barrier_depends() and the ACCESS_ONCE(), because | |
65 | * caller holds RTNL. | |
7dff59ef ED |
66 | */ |
67 | #define rtnl_dereference(p) \ | |
29fa060e | 68 | rcu_dereference_protected(p, lockdep_rtnl_is_held()) |
7dff59ef | 69 | |
24824a09 ED |
70 | static inline struct netdev_queue *dev_ingress_queue(struct net_device *dev) |
71 | { | |
72 | return rtnl_dereference(dev->ingress_queue); | |
73 | } | |
74 | ||
75 | extern struct netdev_queue *dev_ingress_queue_create(struct net_device *dev); | |
76 | ||
1da177e4 | 77 | extern void rtnetlink_init(void); |
6756ae4b | 78 | extern void __rtnl_unlock(void); |
1da177e4 LT |
79 | |
80 | #define ASSERT_RTNL() do { \ | |
c9c1014b | 81 | if (unlikely(!rtnl_is_locked())) { \ |
1da177e4 LT |
82 | printk(KERN_ERR "RTNL: assertion failed at %s (%d)\n", \ |
83 | __FILE__, __LINE__); \ | |
84 | dump_stack(); \ | |
85 | } \ | |
86 | } while(0) | |
87 | ||
77162022 JF |
88 | extern int ndo_dflt_fdb_dump(struct sk_buff *skb, |
89 | struct netlink_callback *cb, | |
90 | struct net_device *dev, | |
5d5eacb3 | 91 | struct net_device *filter_dev, |
77162022 | 92 | int idx); |
090096bf VY |
93 | extern int ndo_dflt_fdb_add(struct ndmsg *ndm, |
94 | struct nlattr *tb[], | |
95 | struct net_device *dev, | |
96 | const unsigned char *addr, | |
97 | u16 flags); | |
98 | extern int ndo_dflt_fdb_del(struct ndmsg *ndm, | |
99 | struct nlattr *tb[], | |
100 | struct net_device *dev, | |
101 | const unsigned char *addr); | |
815cccbf JF |
102 | |
103 | extern int ndo_dflt_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, | |
104 | struct net_device *dev, u16 mode); | |
1da177e4 | 105 | #endif /* __LINUX_RTNETLINK_H */ |