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);
20struct sk_buff *rtmsg_ifinfo_build_skb(int type, struct net_device *dev,
21 unsigned change, u32 event,
22 gfp_t flags);
23void rtmsg_ifinfo_send(struct sk_buff *skb, struct net_device *dev,
24 gfp_t flags);
25
26
27/* RTNL is used as a global lock for all changes to network configuration */
28extern void rtnl_lock(void);
29extern void rtnl_unlock(void);
30extern int rtnl_trylock(void);
31extern int rtnl_is_locked(void);
32
33extern wait_queue_head_t netdev_unregistering_wq;
34extern struct mutex net_mutex;
35
36#ifdef CONFIG_PROVE_LOCKING
37extern bool lockdep_rtnl_is_held(void);
38#else
39static inline bool lockdep_rtnl_is_held(void)
40{
41 return true;
42}
43#endif /* #ifdef CONFIG_PROVE_LOCKING */
44
45/**
46 * rcu_dereference_rtnl - rcu_dereference with debug checking
47 * @p: The pointer to read, prior to dereferencing
48 *
49 * Do an rcu_dereference(p), but check caller either holds rcu_read_lock()
50 * or RTNL. Note : Please prefer rtnl_dereference() or rcu_dereference()
51 */
52#define rcu_dereference_rtnl(p) \
53 rcu_dereference_check(p, lockdep_rtnl_is_held())
54
55/**
56 * rcu_dereference_bh_rtnl - rcu_dereference_bh with debug checking
57 * @p: The pointer to read, prior to dereference
58 *
59 * Do an rcu_dereference_bh(p), but check caller either holds rcu_read_lock_bh()
60 * or RTNL. Note : Please prefer rtnl_dereference() or rcu_dereference_bh()
61 */
62#define rcu_dereference_bh_rtnl(p) \
63 rcu_dereference_bh_check(p, lockdep_rtnl_is_held())
64
65/**
66 * rtnl_dereference - fetch RCU pointer when updates are prevented by RTNL
67 * @p: The pointer to read, prior to dereferencing
68 *
69 * Return the value of the specified RCU-protected pointer, but omit
70 * both the smp_read_barrier_depends() and the ACCESS_ONCE(), because
71 * caller holds RTNL.
72 */
73#define rtnl_dereference(p) \
74 rcu_dereference_protected(p, lockdep_rtnl_is_held())
75
76static inline struct netdev_queue *dev_ingress_queue(struct net_device *dev)
77{
78 return rtnl_dereference(dev->ingress_queue);
79}
80
81struct netdev_queue *dev_ingress_queue_create(struct net_device *dev);
82
83#ifdef CONFIG_NET_INGRESS
84void net_inc_ingress_queue(void);
85void net_dec_ingress_queue(void);
86#endif
87
88#ifdef CONFIG_NET_EGRESS
89void net_inc_egress_queue(void);
90void net_dec_egress_queue(void);
91#endif
92
93void rtnetlink_init(void);
94void __rtnl_unlock(void);
95void rtnl_kfree_skbs(struct sk_buff *head, struct sk_buff *tail);
96
97#define ASSERT_RTNL() do { \
98 if (unlikely(!rtnl_is_locked())) { \
99 printk(KERN_ERR "RTNL: assertion failed at %s (%d)\n", \
100 __FILE__, __LINE__); \
101 dump_stack(); \
102 } \
103} while(0)
104
105extern int ndo_dflt_fdb_dump(struct sk_buff *skb,
106 struct netlink_callback *cb,
107 struct net_device *dev,
108 struct net_device *filter_dev,
109 int *idx);
110extern int ndo_dflt_fdb_add(struct ndmsg *ndm,
111 struct nlattr *tb[],
112 struct net_device *dev,
113 const unsigned char *addr,
114 u16 vid,
115 u16 flags);
116extern int ndo_dflt_fdb_del(struct ndmsg *ndm,
117 struct nlattr *tb[],
118 struct net_device *dev,
119 const unsigned char *addr,
120 u16 vid);
121
122extern int ndo_dflt_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
123 struct net_device *dev, u16 mode,
124 u32 flags, u32 mask, int nlflags,
125 u32 filter_mask,
126 int (*vlan_fill)(struct sk_buff *skb,
127 struct net_device *dev,
128 u32 filter_mask));
129#endif /* __LINUX_RTNETLINK_H */