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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
;
48 struct rhash_head node
;
52 static inline struct netlink_sock
*nlk_sk(struct sock
*sk
)
54 return container_of(sk
, struct netlink_sock
, sk
);
57 struct netlink_table
{
58 struct rhashtable hash
;
59 struct hlist_head mc_list
;
60 struct listeners __rcu
*listeners
;
63 struct mutex
*cb_mutex
;
64 struct module
*module
;
65 int (*bind
)(struct net
*net
, int group
);
66 void (*unbind
)(struct net
*net
, int group
);
67 bool (*compare
)(struct net
*net
, struct sock
*sock
);
71 extern struct netlink_table
*nl_table
;
72 extern rwlock_t nl_table_lock
;