Harald Welte | f9e815b | 2005-08-09 19:30:24 -0700 | [diff] [blame] | 1 | #ifndef _NFNETLINK_H |
| 2 | #define _NFNETLINK_H |
| 3 | #include <linux/types.h> |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 4 | #include <linux/netfilter/nfnetlink_compat.h> |
Patrick McHardy | ac6d439 | 2005-08-14 19:29:52 -0700 | [diff] [blame] | 5 | |
| 6 | enum nfnetlink_groups { |
| 7 | NFNLGRP_NONE, |
| 8 | #define NFNLGRP_NONE NFNLGRP_NONE |
| 9 | NFNLGRP_CONNTRACK_NEW, |
| 10 | #define NFNLGRP_CONNTRACK_NEW NFNLGRP_CONNTRACK_NEW |
| 11 | NFNLGRP_CONNTRACK_UPDATE, |
| 12 | #define NFNLGRP_CONNTRACK_UPDATE NFNLGRP_CONNTRACK_UPDATE |
| 13 | NFNLGRP_CONNTRACK_DESTROY, |
| 14 | #define NFNLGRP_CONNTRACK_DESTROY NFNLGRP_CONNTRACK_DESTROY |
| 15 | NFNLGRP_CONNTRACK_EXP_NEW, |
| 16 | #define NFNLGRP_CONNTRACK_EXP_NEW NFNLGRP_CONNTRACK_EXP_NEW |
| 17 | NFNLGRP_CONNTRACK_EXP_UPDATE, |
| 18 | #define NFNLGRP_CONNTRACK_EXP_UPDATE NFNLGRP_CONNTRACK_EXP_UPDATE |
| 19 | NFNLGRP_CONNTRACK_EXP_DESTROY, |
| 20 | #define NFNLGRP_CONNTRACK_EXP_DESTROY NFNLGRP_CONNTRACK_EXP_DESTROY |
| 21 | __NFNLGRP_MAX, |
| 22 | }; |
| 23 | #define NFNLGRP_MAX (__NFNLGRP_MAX - 1) |
Harald Welte | f9e815b | 2005-08-09 19:30:24 -0700 | [diff] [blame] | 24 | |
Harald Welte | f9e815b | 2005-08-09 19:30:24 -0700 | [diff] [blame] | 25 | /* General form of address family dependent message. |
| 26 | */ |
| 27 | struct nfgenmsg { |
Arnd Bergmann | 60c195c | 2009-02-26 00:51:43 +0100 | [diff] [blame] | 28 | __u8 nfgen_family; /* AF_xxx */ |
| 29 | __u8 version; /* nfnetlink version */ |
Al Viro | 98a4a86 | 2006-11-08 00:26:51 -0800 | [diff] [blame] | 30 | __be16 res_id; /* resource id */ |
Patrick McHardy | 53e2665 | 2006-08-22 00:43:20 -0700 | [diff] [blame] | 31 | }; |
Harald Welte | f9e815b | 2005-08-09 19:30:24 -0700 | [diff] [blame] | 32 | |
Harald Welte | 080774a | 2005-08-09 19:32:58 -0700 | [diff] [blame] | 33 | #define NFNETLINK_V0 0 |
Harald Welte | f9e815b | 2005-08-09 19:30:24 -0700 | [diff] [blame] | 34 | |
Harald Welte | f9e815b | 2005-08-09 19:30:24 -0700 | [diff] [blame] | 35 | /* netfilter netlink message types are split in two pieces: |
| 36 | * 8 bit subsystem, 8bit operation. |
| 37 | */ |
| 38 | |
| 39 | #define NFNL_SUBSYS_ID(x) ((x & 0xff00) >> 8) |
| 40 | #define NFNL_MSG_TYPE(x) (x & 0x00ff) |
| 41 | |
Harald Welte | 0ab43f8 | 2005-08-09 19:43:44 -0700 | [diff] [blame] | 42 | /* No enum here, otherwise __stringify() trick of MODULE_ALIAS_NFNL_SUBSYS() |
| 43 | * won't work anymore */ |
| 44 | #define NFNL_SUBSYS_NONE 0 |
| 45 | #define NFNL_SUBSYS_CTNETLINK 1 |
| 46 | #define NFNL_SUBSYS_CTNETLINK_EXP 2 |
| 47 | #define NFNL_SUBSYS_QUEUE 3 |
| 48 | #define NFNL_SUBSYS_ULOG 4 |
Evgeniy Polyakov | 11eeef4 | 2009-06-08 17:01:51 +0200 | [diff] [blame] | 49 | #define NFNL_SUBSYS_OSF 5 |
Jozsef Kadlecsik | f703651 | 2011-02-01 15:20:14 +0100 | [diff] [blame] | 50 | #define NFNL_SUBSYS_IPSET 6 |
Pablo Neira Ayuso | 9413902 | 2011-12-23 14:19:50 +0100 | [diff] [blame] | 51 | #define NFNL_SUBSYS_ACCT 7 |
Pablo Neira Ayuso | 5097846 | 2012-02-28 19:13:48 +0100 | [diff] [blame] | 52 | #define NFNL_SUBSYS_CTNETLINK_TIMEOUT 8 |
| 53 | #define NFNL_SUBSYS_COUNT 9 |
Harald Welte | f9e815b | 2005-08-09 19:30:24 -0700 | [diff] [blame] | 54 | |
| 55 | #ifdef __KERNEL__ |
| 56 | |
Harald Welte | 080774a | 2005-08-09 19:32:58 -0700 | [diff] [blame] | 57 | #include <linux/netlink.h> |
Harald Welte | f9e815b | 2005-08-09 19:30:24 -0700 | [diff] [blame] | 58 | #include <linux/capability.h> |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 59 | #include <net/netlink.h> |
Harald Welte | f9e815b | 2005-08-09 19:30:24 -0700 | [diff] [blame] | 60 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 61 | struct nfnl_callback { |
Harald Welte | f9e815b | 2005-08-09 19:30:24 -0700 | [diff] [blame] | 62 | int (*call)(struct sock *nl, struct sk_buff *skb, |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 63 | const struct nlmsghdr *nlh, |
| 64 | const struct nlattr * const cda[]); |
Eric Dumazet | 6b75e3e | 2011-07-18 16:08:07 +0200 | [diff] [blame] | 65 | int (*call_rcu)(struct sock *nl, struct sk_buff *skb, |
| 66 | const struct nlmsghdr *nlh, |
| 67 | const struct nlattr * const cda[]); |
Patrick McHardy | e373057 | 2007-09-28 14:38:52 -0700 | [diff] [blame] | 68 | const struct nla_policy *policy; /* netlink attribute policy */ |
| 69 | const u_int16_t attr_count; /* number of nlattr's */ |
Harald Welte | f9e815b | 2005-08-09 19:30:24 -0700 | [diff] [blame] | 70 | }; |
| 71 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 72 | struct nfnetlink_subsystem { |
Harald Welte | f9e815b | 2005-08-09 19:30:24 -0700 | [diff] [blame] | 73 | const char *name; |
Patrick McHardy | 7c8d4cb | 2007-09-28 14:15:45 -0700 | [diff] [blame] | 74 | __u8 subsys_id; /* nfnetlink subsystem ID */ |
| 75 | __u8 cb_count; /* number of callbacks */ |
| 76 | const struct nfnl_callback *cb; /* callback for individual types */ |
Harald Welte | f9e815b | 2005-08-09 19:30:24 -0700 | [diff] [blame] | 77 | }; |
| 78 | |
Patrick McHardy | 7c8d4cb | 2007-09-28 14:15:45 -0700 | [diff] [blame] | 79 | extern int nfnetlink_subsys_register(const struct nfnetlink_subsystem *n); |
| 80 | extern int nfnetlink_subsys_unregister(const struct nfnetlink_subsystem *n); |
Harald Welte | f9e815b | 2005-08-09 19:30:24 -0700 | [diff] [blame] | 81 | |
Alexey Dobriyan | cd8c20b | 2010-01-13 16:02:14 +0100 | [diff] [blame] | 82 | extern int nfnetlink_has_listeners(struct net *net, unsigned int group); |
| 83 | extern int nfnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, unsigned group, |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 84 | int echo, gfp_t flags); |
Pablo Neira Ayuso | 37b7ef7 | 2010-03-16 13:30:21 +0000 | [diff] [blame] | 85 | extern int nfnetlink_set_err(struct net *net, u32 pid, u32 group, int error); |
Alexey Dobriyan | cd8c20b | 2010-01-13 16:02:14 +0100 | [diff] [blame] | 86 | extern int nfnetlink_unicast(struct sk_buff *skb, struct net *net, u_int32_t pid, int flags); |
Harald Welte | f9e815b | 2005-08-09 19:30:24 -0700 | [diff] [blame] | 87 | |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 88 | extern void nfnl_lock(void); |
| 89 | extern void nfnl_unlock(void); |
| 90 | |
Harald Welte | 0ab43f8 | 2005-08-09 19:43:44 -0700 | [diff] [blame] | 91 | #define MODULE_ALIAS_NFNL_SUBSYS(subsys) \ |
| 92 | MODULE_ALIAS("nfnetlink-subsys-" __stringify(subsys)) |
| 93 | |
Harald Welte | f9e815b | 2005-08-09 19:30:24 -0700 | [diff] [blame] | 94 | #endif /* __KERNEL__ */ |
| 95 | #endif /* _NFNETLINK_H */ |