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 |
| 50 | #define NFNL_SUBSYS_COUNT 6 |
Harald Welte | f9e815b | 2005-08-09 19:30:24 -0700 | [diff] [blame] | 51 | |
| 52 | #ifdef __KERNEL__ |
| 53 | |
Harald Welte | 080774a | 2005-08-09 19:32:58 -0700 | [diff] [blame] | 54 | #include <linux/netlink.h> |
Harald Welte | f9e815b | 2005-08-09 19:30:24 -0700 | [diff] [blame] | 55 | #include <linux/capability.h> |
Patrick McHardy | df6fb86 | 2007-09-28 14:37:03 -0700 | [diff] [blame] | 56 | #include <net/netlink.h> |
Harald Welte | f9e815b | 2005-08-09 19:30:24 -0700 | [diff] [blame] | 57 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 58 | struct nfnl_callback { |
Harald Welte | f9e815b | 2005-08-09 19:30:24 -0700 | [diff] [blame] | 59 | int (*call)(struct sock *nl, struct sk_buff *skb, |
Patrick McHardy | 3993832 | 2009-08-25 16:07:58 +0200 | [diff] [blame] | 60 | const struct nlmsghdr *nlh, |
| 61 | const struct nlattr * const cda[]); |
Patrick McHardy | e373057 | 2007-09-28 14:38:52 -0700 | [diff] [blame] | 62 | const struct nla_policy *policy; /* netlink attribute policy */ |
| 63 | const u_int16_t attr_count; /* number of nlattr's */ |
Harald Welte | f9e815b | 2005-08-09 19:30:24 -0700 | [diff] [blame] | 64 | }; |
| 65 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 66 | struct nfnetlink_subsystem { |
Harald Welte | f9e815b | 2005-08-09 19:30:24 -0700 | [diff] [blame] | 67 | const char *name; |
Patrick McHardy | 7c8d4cb | 2007-09-28 14:15:45 -0700 | [diff] [blame] | 68 | __u8 subsys_id; /* nfnetlink subsystem ID */ |
| 69 | __u8 cb_count; /* number of callbacks */ |
| 70 | const struct nfnl_callback *cb; /* callback for individual types */ |
Harald Welte | f9e815b | 2005-08-09 19:30:24 -0700 | [diff] [blame] | 71 | }; |
| 72 | |
Patrick McHardy | 7c8d4cb | 2007-09-28 14:15:45 -0700 | [diff] [blame] | 73 | extern int nfnetlink_subsys_register(const struct nfnetlink_subsystem *n); |
| 74 | extern int nfnetlink_subsys_unregister(const struct nfnetlink_subsystem *n); |
Harald Welte | f9e815b | 2005-08-09 19:30:24 -0700 | [diff] [blame] | 75 | |
Patrick McHardy | a242769 | 2006-03-20 18:03:59 -0800 | [diff] [blame] | 76 | extern int nfnetlink_has_listeners(unsigned int group); |
Harald Welte | f9e815b | 2005-08-09 19:30:24 -0700 | [diff] [blame] | 77 | extern int nfnetlink_send(struct sk_buff *skb, u32 pid, unsigned group, |
Pablo Neira Ayuso | e34d5c1 | 2009-06-03 10:32:06 +0200 | [diff] [blame] | 78 | int echo, gfp_t flags); |
Pablo Neira Ayuso | dd5b6ce | 2009-03-23 13:21:06 +0100 | [diff] [blame] | 79 | extern void nfnetlink_set_err(u32 pid, u32 group, int error); |
Harald Welte | f9e815b | 2005-08-09 19:30:24 -0700 | [diff] [blame] | 80 | extern int nfnetlink_unicast(struct sk_buff *skb, u_int32_t pid, int flags); |
| 81 | |
Pablo Neira Ayuso | e6a7d3c | 2008-10-14 11:58:31 -0700 | [diff] [blame] | 82 | extern void nfnl_lock(void); |
| 83 | extern void nfnl_unlock(void); |
| 84 | |
Harald Welte | 0ab43f8 | 2005-08-09 19:43:44 -0700 | [diff] [blame] | 85 | #define MODULE_ALIAS_NFNL_SUBSYS(subsys) \ |
| 86 | MODULE_ALIAS("nfnetlink-subsys-" __stringify(subsys)) |
| 87 | |
Harald Welte | f9e815b | 2005-08-09 19:30:24 -0700 | [diff] [blame] | 88 | #endif /* __KERNEL__ */ |
| 89 | #endif /* _NFNETLINK_H */ |