#ifndef _NFNETLINK_H
#define _NFNETLINK_H
#include <linux/types.h>
-
-/* nfnetlink groups: Up to 32 maximum */
-#define NF_NETLINK_CONNTRACK_NEW 0x00000001
-#define NF_NETLINK_CONNTRACK_UPDATE 0x00000002
-#define NF_NETLINK_CONNTRACK_DESTROY 0x00000004
-#define NF_NETLINK_CONNTRACK_EXP_NEW 0x00000008
-#define NF_NETLINK_CONNTRACK_EXP_UPDATE 0x00000010
-#define NF_NETLINK_CONNTRACK_EXP_DESTROY 0x00000020
-
-/* Generic structure for encapsulation optional netfilter information.
- * It is reminiscent of sockaddr, but with sa_family replaced
- * with attribute type.
- * ! This should someday be put somewhere generic as now rtnetlink and
- * ! nfnetlink use the same attributes methods. - J. Schulist.
- */
-
-struct nfattr
-{
- u_int16_t nfa_len;
- u_int16_t nfa_type;
-} __attribute__ ((packed));
-
-/* FIXME: Shamelessly copy and pasted from rtnetlink.h, it's time
- * to put this in a generic file */
-
-#define NFA_ALIGNTO 4
-#define NFA_ALIGN(len) (((len) + NFA_ALIGNTO - 1) & ~(NFA_ALIGNTO - 1))
-#define NFA_OK(nfa,len) ((len) > 0 && (nfa)->nfa_len >= sizeof(struct nfattr) \
- && (nfa)->nfa_len <= (len))
-#define NFA_NEXT(nfa,attrlen) ((attrlen) -= NFA_ALIGN((nfa)->nfa_len), \
- (struct nfattr *)(((char *)(nfa)) + NFA_ALIGN((nfa)->nfa_len)))
-#define NFA_LENGTH(len) (NFA_ALIGN(sizeof(struct nfattr)) + (len))
-#define NFA_SPACE(len) NFA_ALIGN(NFA_LENGTH(len))
-#define NFA_DATA(nfa) ((void *)(((char *)(nfa)) + NFA_LENGTH(0)))
-#define NFA_PAYLOAD(nfa) ((int)((nfa)->nfa_len) - NFA_LENGTH(0))
-#define NFA_NEST(skb, type) \
-({ struct nfattr *__start = (struct nfattr *) (skb)->tail; \
- NFA_PUT(skb, type, 0, NULL); \
- __start; })
-#define NFA_NEST_END(skb, start) \
-({ (start)->nfa_len = ((skb)->tail - (unsigned char *) (start)); \
- (skb)->len; })
-#define NFA_NEST_CANCEL(skb, start) \
-({ if (start) \
- skb_trim(skb, (unsigned char *) (start) - (skb)->data); \
- -1; })
+#include <linux/netfilter/nfnetlink_compat.h>
+
+enum nfnetlink_groups {
+ NFNLGRP_NONE,
+#define NFNLGRP_NONE NFNLGRP_NONE
+ NFNLGRP_CONNTRACK_NEW,
+#define NFNLGRP_CONNTRACK_NEW NFNLGRP_CONNTRACK_NEW
+ NFNLGRP_CONNTRACK_UPDATE,
+#define NFNLGRP_CONNTRACK_UPDATE NFNLGRP_CONNTRACK_UPDATE
+ NFNLGRP_CONNTRACK_DESTROY,
+#define NFNLGRP_CONNTRACK_DESTROY NFNLGRP_CONNTRACK_DESTROY
+ NFNLGRP_CONNTRACK_EXP_NEW,
+#define NFNLGRP_CONNTRACK_EXP_NEW NFNLGRP_CONNTRACK_EXP_NEW
+ NFNLGRP_CONNTRACK_EXP_UPDATE,
+#define NFNLGRP_CONNTRACK_EXP_UPDATE NFNLGRP_CONNTRACK_EXP_UPDATE
+ NFNLGRP_CONNTRACK_EXP_DESTROY,
+#define NFNLGRP_CONNTRACK_EXP_DESTROY NFNLGRP_CONNTRACK_EXP_DESTROY
+ __NFNLGRP_MAX,
+};
+#define NFNLGRP_MAX (__NFNLGRP_MAX - 1)
/* General form of address family dependent message.
*/
struct nfgenmsg {
- u_int8_t nfgen_family; /* AF_xxx */
- u_int8_t version; /* nfnetlink version */
- u_int16_t res_id; /* resource id */
-} __attribute__ ((packed));
+ __u8 nfgen_family; /* AF_xxx */
+ __u8 version; /* nfnetlink version */
+ __be16 res_id; /* resource id */
+};
#define NFNETLINK_V0 0
-#define NFM_NFA(n) ((struct nfattr *)(((char *)(n)) \
- + NLMSG_ALIGN(sizeof(struct nfgenmsg))))
-#define NFM_PAYLOAD(n) NLMSG_PAYLOAD(n, sizeof(struct nfgenmsg))
-
/* netfilter netlink message types are split in two pieces:
* 8 bit subsystem, 8bit operation.
*/
#define NFNL_SUBSYS_CTNETLINK_EXP 2
#define NFNL_SUBSYS_QUEUE 3
#define NFNL_SUBSYS_ULOG 4
-#define NFNL_SUBSYS_COUNT 5
+#define NFNL_SUBSYS_OSF 5
+#define NFNL_SUBSYS_COUNT 6
#ifdef __KERNEL__
#include <linux/netlink.h>
#include <linux/capability.h>
+#include <net/netlink.h>
-struct nfnl_callback
-{
- kernel_cap_t cap_required; /* capabilities required for this msg */
+struct nfnl_callback {
int (*call)(struct sock *nl, struct sk_buff *skb,
- struct nlmsghdr *nlh, struct nfattr *cda[], int *errp);
+ const struct nlmsghdr *nlh,
+ const struct nlattr * const cda[]);
+ const struct nla_policy *policy; /* netlink attribute policy */
+ const u_int16_t attr_count; /* number of nlattr's */
};
-struct nfnetlink_subsystem
-{
+struct nfnetlink_subsystem {
const char *name;
- __u8 subsys_id; /* nfnetlink subsystem ID */
- __u8 cb_count; /* number of callbacks */
- u_int32_t attr_count; /* number of nfattr's */
- struct nfnl_callback *cb; /* callback for individual types */
+ __u8 subsys_id; /* nfnetlink subsystem ID */
+ __u8 cb_count; /* number of callbacks */
+ const struct nfnl_callback *cb; /* callback for individual types */
};
-extern void __nfa_fill(struct sk_buff *skb, int attrtype,
- int attrlen, const void *data);
-#define NFA_PUT(skb, attrtype, attrlen, data) \
-({ if (skb_tailroom(skb) < (int)NFA_SPACE(attrlen)) goto nfattr_failure; \
- __nfa_fill(skb, attrtype, attrlen, data); })
-
-extern struct semaphore nfnl_sem;
+extern int nfnetlink_subsys_register(const struct nfnetlink_subsystem *n);
+extern int nfnetlink_subsys_unregister(const struct nfnetlink_subsystem *n);
-#define nfnl_shlock() down(&nfnl_sem)
-#define nfnl_shlock_nowait() down_trylock(&nfnl_sem)
-
-#define nfnl_shunlock() do { up(&nfnl_sem); \
- if(nfnl && nfnl->sk_receive_queue.qlen) \
- nfnl->sk_data_ready(nfnl, 0); \
- } while(0)
+extern int nfnetlink_has_listeners(struct net *net, unsigned int group);
+extern int nfnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, unsigned group,
+ int echo, gfp_t flags);
+extern void nfnetlink_set_err(struct net *net, u32 pid, u32 group, int error);
+extern int nfnetlink_unicast(struct sk_buff *skb, struct net *net, u_int32_t pid, int flags);
extern void nfnl_lock(void);
extern void nfnl_unlock(void);
-extern int nfnetlink_subsys_register(struct nfnetlink_subsystem *n);
-extern int nfnetlink_subsys_unregister(struct nfnetlink_subsystem *n);
-
-extern int nfattr_parse(struct nfattr *tb[], int maxattr,
- struct nfattr *nfa, int len);
-
-#define nfattr_parse_nested(tb, max, nfa) \
- nfattr_parse((tb), (max), NFA_DATA((nfa)), NFA_PAYLOAD((nfa)))
-
-#define nfattr_bad_size(tb, max, cta_min) \
-({ int __i, __res = 0; \
- for (__i=0; __i<max; __i++) \
- if (tb[__i] && NFA_PAYLOAD(tb[__i]) < cta_min[__i]){ \
- __res = 1; \
- break; \
- } \
- __res; \
-})
-
-extern int nfnetlink_send(struct sk_buff *skb, u32 pid, unsigned group,
- int echo);
-extern int nfnetlink_unicast(struct sk_buff *skb, u_int32_t pid, int flags);
-
#define MODULE_ALIAS_NFNL_SUBSYS(subsys) \
MODULE_ALIAS("nfnetlink-subsys-" __stringify(subsys))
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff