]>
git.proxmox.com Git - mirror_ubuntu-jammy-kernel.git/blob - net/netlink/af_netlink.h
4 #include <linux/rhashtable.h>
5 #include <linux/atomic.h>
8 #define NLGRPSZ(x) (ALIGN(x, sizeof(unsigned long) * 8) / 8)
9 #define NLGRPLONGS(x) (NLGRPSZ(x)/sizeof(unsigned long))
14 unsigned int frames_per_block
;
15 unsigned int frame_size
;
16 unsigned int frame_max
;
18 unsigned int pg_vec_order
;
19 unsigned int pg_vec_pages
;
20 unsigned int pg_vec_len
;
26 /* struct sock has to be the first member of netlink_sock */
34 unsigned long *groups
;
36 size_t max_recvmsg_len
;
37 wait_queue_head_t wait
;
40 struct netlink_callback cb
;
41 struct mutex
*cb_mutex
;
42 struct mutex cb_def_mutex
;
43 void (*netlink_rcv
)(struct sk_buff
*skb
);
44 int (*netlink_bind
)(struct net
*net
, int group
);
45 void (*netlink_unbind
)(struct net
*net
, int group
);
46 struct module
*module
;
47 #ifdef CONFIG_NETLINK_MMAP
48 struct mutex pg_vec_lock
;
49 struct netlink_ring rx_ring
;
50 struct netlink_ring tx_ring
;
52 #endif /* CONFIG_NETLINK_MMAP */
54 struct rhash_head node
;
58 static inline struct netlink_sock
*nlk_sk(struct sock
*sk
)
60 return container_of(sk
, struct netlink_sock
, sk
);
63 static inline bool netlink_skb_is_mmaped(const struct sk_buff
*skb
)
65 #ifdef CONFIG_NETLINK_MMAP
66 return NETLINK_CB(skb
).flags
& NETLINK_SKB_MMAPED
;
69 #endif /* CONFIG_NETLINK_MMAP */
72 struct netlink_table
{
73 struct rhashtable hash
;
74 struct hlist_head mc_list
;
75 struct listeners __rcu
*listeners
;
78 struct mutex
*cb_mutex
;
79 struct module
*module
;
80 int (*bind
)(struct net
*net
, int group
);
81 void (*unbind
)(struct net
*net
, int group
);
82 bool (*compare
)(struct net
*net
, struct sock
*sock
);
86 extern struct netlink_table
*nl_table
;
87 extern rwlock_t nl_table_lock
;