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1 | #ifndef __LINUX_RTNETLINK_H |
2 | #define __LINUX_RTNETLINK_H |
3 | |
4 | |
5 | #include <linux/mutex.h> |
6 | #include <linux/netdevice.h> |
7 | #include <uapi/linux/rtnetlink.h> |
8 | |
9 | extern int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, u32 group, int echo); |
10 | extern int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid); |
11 | extern void rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid, |
12 | u32 group, struct nlmsghdr *nlh, gfp_t flags); |
13 | extern void rtnl_set_sk_err(struct net *net, u32 group, int error); |
14 | extern int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics); |
15 | extern int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst, |
16 | u32 id, long expires, u32 error); |
17 | |
18 | extern void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change); |
19 | |
20 | /* RTNL is used as a global lock for all changes to network configuration */ |
21 | extern void rtnl_lock(void); |
22 | extern void rtnl_unlock(void); |
23 | extern int rtnl_trylock(void); |
24 | extern int rtnl_is_locked(void); |
25 | #ifdef CONFIG_PROVE_LOCKING |
26 | extern int lockdep_rtnl_is_held(void); |
27 | #endif /* #ifdef CONFIG_PROVE_LOCKING */ |
28 | |
29 | /** |
30 | * rcu_dereference_rtnl - rcu_dereference with debug checking |
31 | * @p: The pointer to read, prior to dereferencing |
32 | * |
33 | * Do an rcu_dereference(p), but check caller either holds rcu_read_lock() |
34 | * or RTNL. Note : Please prefer rtnl_dereference() or rcu_dereference() |
35 | */ |
36 | #define rcu_dereference_rtnl(p) \ |
37 | rcu_dereference_check(p, lockdep_rtnl_is_held()) |
38 | |
39 | /** |
40 | * rtnl_dereference - fetch RCU pointer when updates are prevented by RTNL |
41 | * @p: The pointer to read, prior to dereferencing |
42 | * |
43 | * Return the value of the specified RCU-protected pointer, but omit |
44 | * both the smp_read_barrier_depends() and the ACCESS_ONCE(), because |
45 | * caller holds RTNL. |
46 | */ |
47 | #define rtnl_dereference(p) \ |
48 | rcu_dereference_protected(p, lockdep_rtnl_is_held()) |
49 | |
50 | static inline struct netdev_queue *dev_ingress_queue(struct net_device *dev) |
51 | { |
52 | return rtnl_dereference(dev->ingress_queue); |
53 | } |
54 | |
55 | extern struct netdev_queue *dev_ingress_queue_create(struct net_device *dev); |
56 | |
57 | extern void rtnetlink_init(void); |
58 | extern void __rtnl_unlock(void); |
59 | |
60 | #define ASSERT_RTNL() do { \ |
61 | if (unlikely(!rtnl_is_locked())) { \ |
62 | printk(KERN_ERR "RTNL: assertion failed at %s (%d)\n", \ |
63 | __FILE__, __LINE__); \ |
64 | dump_stack(); \ |
65 | } \ |
66 | } while(0) |
67 | |
68 | extern int ndo_dflt_fdb_dump(struct sk_buff *skb, |
69 | struct netlink_callback *cb, |
70 | struct net_device *dev, |
71 | int idx); |
72 | extern int ndo_dflt_fdb_add(struct ndmsg *ndm, |
73 | struct nlattr *tb[], |
74 | struct net_device *dev, |
75 | const unsigned char *addr, |
76 | u16 flags); |
77 | extern int ndo_dflt_fdb_del(struct ndmsg *ndm, |
78 | struct nlattr *tb[], |
79 | struct net_device *dev, |
80 | const unsigned char *addr); |
81 | |
82 | extern int ndo_dflt_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, |
83 | struct net_device *dev, u16 mode); |
84 | #endif /* __LINUX_RTNETLINK_H */ |
85 |
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