Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#ifndef __LINUX_RTNETLINK_H
2#define __LINUX_RTNETLINK_H
3
4
5#include <linux/mutex.h>
6#include <linux/netdevice.h>
7#include <linux/wait.h>
8#include <uapi/linux/rtnetlink.h>
9
10extern int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, u32 group, int echo);
11extern int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid);
12extern void rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid,
13 u32 group, struct nlmsghdr *nlh, gfp_t flags);
14extern void rtnl_set_sk_err(struct net *net, u32 group, int error);
15extern int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics);
16extern int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst,
17 u32 id, long expires, u32 error);
18
19void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change, gfp_t flags);
20
21/* RTNL is used as a global lock for all changes to network configuration */
22extern void rtnl_lock(void);
23extern void rtnl_unlock(void);
24extern int rtnl_trylock(void);
25extern int rtnl_is_locked(void);
26
27extern wait_queue_head_t netdev_unregistering_wq;
28extern struct mutex net_mutex;
29
30#ifdef CONFIG_PROVE_LOCKING
31extern int lockdep_rtnl_is_held(void);
32#else
33static inline int lockdep_rtnl_is_held(void)
34{
35 return 1;
36}
37#endif /* #ifdef CONFIG_PROVE_LOCKING */
38
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()
44 * or RTNL. Note : Please prefer rtnl_dereference() or rcu_dereference()
45 */
46#define rcu_dereference_rtnl(p) \
47 rcu_dereference_check(p, lockdep_rtnl_is_held())
48
49/**
50 * rtnl_dereference - fetch RCU pointer when updates are prevented by RTNL
51 * @p: The pointer to read, prior to dereferencing
52 *
53 * Return the value of the specified RCU-protected pointer, but omit
54 * both the smp_read_barrier_depends() and the ACCESS_ONCE(), because
55 * caller holds RTNL.
56 */
57#define rtnl_dereference(p) \
58 rcu_dereference_protected(p, lockdep_rtnl_is_held())
59
60static inline struct netdev_queue *dev_ingress_queue(struct net_device *dev)
61{
62 return rtnl_dereference(dev->ingress_queue);
63}
64
65extern struct netdev_queue *dev_ingress_queue_create(struct net_device *dev);
66
67extern void rtnetlink_init(void);
68extern void __rtnl_unlock(void);
69
70#define ASSERT_RTNL() do { \
71 if (unlikely(!rtnl_is_locked())) { \
72 printk(KERN_ERR "RTNL: assertion failed at %s (%d)\n", \
73 __FILE__, __LINE__); \
74 dump_stack(); \
75 } \
76} while(0)
77
78extern int ndo_dflt_fdb_dump(struct sk_buff *skb,
79 struct netlink_callback *cb,
80 struct net_device *dev,
81 int idx);
82extern int ndo_dflt_fdb_add(struct ndmsg *ndm,
83 struct nlattr *tb[],
84 struct net_device *dev,
85 const unsigned char *addr,
86 u16 flags);
87extern int ndo_dflt_fdb_del(struct ndmsg *ndm,
88 struct nlattr *tb[],
89 struct net_device *dev,
90 const unsigned char *addr);
91
92extern int ndo_dflt_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
93 struct net_device *dev, u16 mode);
94#endif /* __LINUX_RTNETLINK_H */