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authorAndrey Vagin <avagin@openvz.org>2013-03-21 20:33:47 +0400
committerDavid S. Miller <davem@davemloft.net>2013-03-21 12:38:02 -0400
commit0f29c768646809264d603574b4a1b15d2ff7ad79 (patch)
treefd0fdab9a15804cedb8f300a99889dfc9b6ac1a5 /net/netlink/af_netlink.h
parent953d276847b92524b34df8598bdaf30c9002c2b4 (diff)
net: prepare netlink code for netlink diag
Move a few declarations in a header. Acked-by: Pavel Emelyanov <xemul@parallels.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Eric Dumazet <edumazet@google.com> Cc: Pablo Neira Ayuso <pablo@netfilter.org> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Gao feng <gaofeng@cn.fujitsu.com> Cc: Thomas Graf <tgraf@suug.ch> Signed-off-by: Andrey Vagin <avagin@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/netlink/af_netlink.h')
-rw-r--r--net/netlink/af_netlink.h62
1 files changed, 62 insertions, 0 deletions
diff --git a/net/netlink/af_netlink.h b/net/netlink/af_netlink.h
new file mode 100644
index 00000000000..d9acb2a1d85
--- /dev/null
+++ b/net/netlink/af_netlink.h
@@ -0,0 +1,62 @@
+#ifndef _AF_NETLINK_H
+#define _AF_NETLINK_H
+
+#include <net/sock.h>
+
+#define NLGRPSZ(x) (ALIGN(x, sizeof(unsigned long) * 8) / 8)
+#define NLGRPLONGS(x) (NLGRPSZ(x)/sizeof(unsigned long))
+
+struct netlink_sock {
+ /* struct sock has to be the first member of netlink_sock */
+ struct sock sk;
+ u32 portid;
+ u32 dst_portid;
+ u32 dst_group;
+ u32 flags;
+ u32 subscriptions;
+ u32 ngroups;
+ unsigned long *groups;
+ unsigned long state;
+ wait_queue_head_t wait;
+ struct netlink_callback *cb;
+ struct mutex *cb_mutex;
+ struct mutex cb_def_mutex;
+ void (*netlink_rcv)(struct sk_buff *skb);
+ void (*netlink_bind)(int group);
+ struct module *module;
+};
+
+static inline struct netlink_sock *nlk_sk(struct sock *sk)
+{
+ return container_of(sk, struct netlink_sock, sk);
+}
+
+struct nl_portid_hash {
+ struct hlist_head *table;
+ unsigned long rehash_time;
+
+ unsigned int mask;
+ unsigned int shift;
+
+ unsigned int entries;
+ unsigned int max_shift;
+
+ u32 rnd;
+};
+
+struct netlink_table {
+ struct nl_portid_hash hash;
+ struct hlist_head mc_list;
+ struct listeners __rcu *listeners;
+ unsigned int flags;
+ unsigned int groups;
+ struct mutex *cb_mutex;
+ struct module *module;
+ void (*bind)(int group);
+ int registered;
+};
+
+extern struct netlink_table *nl_table;
+extern rwlock_t nl_table_lock;
+
+#endif