[netfilter-cvslog] r4500 - in trunk/libnfnetlink: .
include/libnfnetlink
laforge at netfilter.org
laforge at netfilter.org
Fri Nov 11 15:17:19 CET 2005
Author: laforge at netfilter.org
Date: 2005-11-11 15:17:18 +0100 (Fri, 11 Nov 2005)
New Revision: 4500
Added:
trunk/libnfnetlink/include/libnfnetlink/linux_nfnetlink.h
Modified:
trunk/libnfnetlink/configure.in
trunk/libnfnetlink/include/libnfnetlink/Makefile.am
trunk/libnfnetlink/include/libnfnetlink/libnfnetlink.h
Log:
- include copy of 'linux/nfnetlink.h' as 'libnfnetlink/linux_nfnetlink.h'
- remove checks for kernel source, since we don't need that anymore
- bump version number to 0.0.11
Modified: trunk/libnfnetlink/configure.in
===================================================================
--- trunk/libnfnetlink/configure.in 2005-11-11 14:05:56 UTC (rev 4499)
+++ trunk/libnfnetlink/configure.in 2005-11-11 14:17:18 UTC (rev 4500)
@@ -4,7 +4,7 @@
AC_CANONICAL_SYSTEM
-AM_INIT_AUTOMAKE(libnfnetlink, 0.0.10)
+AM_INIT_AUTOMAKE(libnfnetlink, 0.0.11)
AC_PROG_CC
AC_EXEEXT
@@ -18,42 +18,6 @@
dnl--------------------------------
-
-AC_DEFUN([NF_KERNEL_SOURCE],[
-
- if test "$with_kernel" = ""; then
- KERNEL="`uname -r`"
- else
- KERNEL="$with_kernel"
- fi
-
- THIS_PREFIX=""
- for i in "/lib/modules/$KERNEL/build/include" "$KERNEL" "$KERNEL/include" "/usr/src/linux-$KERNEL" "/usr/src/kernel-$KERNEL" "/usr/src/linux-headers-$KERNEL" "/usr/src/kernel-headers-$KERNEL"
- do
- AC_MSG_CHECKING([Looking for kernel source or headers in $i])
- if test -r "$i/linux/config.h"
- then
- THIS_PREFIX="$i"
- AC_MSG_RESULT([found])
- break
- fi
- AC_MSG_RESULT([ ])
- done
- if test -r "$THIS_PREFIX/linux/config.h" ; then
- AC_SUBST(KERNELDIR,[$THIS_PREFIX])
- AC_MSG_RESULT([found])
- else
- AC_MSG_ERROR([not found $THIS_PREFIX])
- fi
-
- # somehow add this as an include path
-])
-
-AC_ARG_WITH(kernel,
- AC_HELP_STRING([--with-kernel=DIR],
- [ Show location of kernel source. Default is to use uname -r and look in /lib/modules/KERNEL/build/include. ]),
- NF_KERNEL_SOURCE($with_kernel),NF_KERNEL_SOURCE())
-
dnl--------------------------------
Modified: trunk/libnfnetlink/include/libnfnetlink/Makefile.am
===================================================================
--- trunk/libnfnetlink/include/libnfnetlink/Makefile.am 2005-11-11 14:05:56 UTC (rev 4499)
+++ trunk/libnfnetlink/include/libnfnetlink/Makefile.am 2005-11-11 14:17:18 UTC (rev 4500)
@@ -1,3 +1,3 @@
-pkginclude_HEADERS = libnfnetlink.h
+pkginclude_HEADERS = libnfnetlink.h linux_nfnetlink.h
Modified: trunk/libnfnetlink/include/libnfnetlink/libnfnetlink.h
===================================================================
--- trunk/libnfnetlink/include/libnfnetlink/libnfnetlink.h 2005-11-11 14:05:56 UTC (rev 4499)
+++ trunk/libnfnetlink/include/libnfnetlink/libnfnetlink.h 2005-11-11 14:17:18 UTC (rev 4500)
@@ -16,7 +16,7 @@
#include <linux/types.h>
#include <sys/socket.h> /* for sa_family_t */
#include <linux/netlink.h>
-#include <linux/netfilter/nfnetlink.h>
+#include <libnfnetlink/linux_nfnetlink.h>
#define NLMSG_TAIL(nlh) \
(((void *) (nlh)) + NLMSG_ALIGN((nlh)->nlmsg_len))
Added: trunk/libnfnetlink/include/libnfnetlink/linux_nfnetlink.h
===================================================================
--- trunk/libnfnetlink/include/libnfnetlink/linux_nfnetlink.h 2005-11-11 14:05:56 UTC (rev 4499)
+++ trunk/libnfnetlink/include/libnfnetlink/linux_nfnetlink.h 2005-11-11 14:17:18 UTC (rev 4500)
@@ -0,0 +1,173 @@
+#ifndef _NFNETLINK_H
+#define _NFNETLINK_H
+#include <linux/types.h>
+
+#ifndef __KERNEL__
+/* nfnetlink groups: Up to 32 maximum - backwards compatibility for userspace */
+#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
+#endif
+
+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)
+
+/* 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; /* we use 15 bits for the type, and the highest
+ * bit to indicate whether the payload is nested */
+} __attribute__ ((packed));
+
+/* FIXME: Apart from NFNL_NFA_NESTED shamelessly copy and pasted from
+ * rtnetlink.h, it's time to put this in a generic file */
+
+#define NFNL_NFA_NEST 0x8000
+#define NFA_TYPE(attr) ((attr)->nfa_type & 0x7fff)
+
+#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, (NFNL_NFA_NEST | 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; })
+
+/* 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));
+
+#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_ID(x) ((x & 0xff00) >> 8)
+#define NFNL_MSG_TYPE(x) (x & 0x00ff)
+
+/* No enum here, otherwise __stringify() trick of MODULE_ALIAS_NFNL_SUBSYS()
+ * won't work anymore */
+#define NFNL_SUBSYS_NONE 0
+#define NFNL_SUBSYS_CTNETLINK 1
+#define NFNL_SUBSYS_CTNETLINK_EXP 2
+#define NFNL_SUBSYS_QUEUE 3
+#define NFNL_SUBSYS_ULOG 4
+#define NFNL_SUBSYS_COUNT 5
+
+#ifdef __KERNEL__
+
+#include <linux/netlink.h>
+#include <linux/capability.h>
+
+struct nfnl_callback
+{
+ int (*call)(struct sock *nl, struct sk_buff *skb,
+ struct nlmsghdr *nlh, struct nfattr *cda[], int *errp);
+ kernel_cap_t cap_required; /* capabilities required for this msg */
+ u_int16_t attr_count; /* number of nfattr's */
+};
+
+struct nfnetlink_subsystem
+{
+ const char *name;
+ __u8 subsys_id; /* nfnetlink subsystem ID */
+ __u8 cb_count; /* number of callbacks */
+ 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;
+
+#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 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))
+
+#endif /* __KERNEL__ */
+#endif /* _NFNETLINK_H */
More information about the netfilter-cvslog
mailing list