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| netfilter编程产生的奇怪问题，请各位帮助，急啊！ |
  netfilter编程产生的奇怪问题，请各位帮助，急啊！ - goodness4960 [ 2005-05-22 17:27 | 2,458 byte(s)]
Re: (版主请帮忙看看啊)netfilter编程产生的奇怪问题，请各位帮助，急啊！ - goodness4960 [ 2005-05-22 17:34 | 106 byte(s)]
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程序及编译错误如下:
#define _KERNEL_
#define MODULE
#include<linux/kernel.h>
#include<linux/module.h>
#include<linux/netdevice.h>
#include<linux/netfilter.h>
#include<linux/netfilter_ipv4.h>
static struct nf_hook_ops nfho;
static unsigned int
my_hook(unsigned int hooknum ,
struct sk_buff **skb ,
const struct net_device *in ,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
return NF_DROP;
}
int init_module(void)
{
nfho.hook=my_hook;
nfho.hooknum=NF_IP_PRE_ROUTING;
nfho.pf= PF_INET;
nfho.priority=NF_IP_PRI_FIRST;
return nf_register_hook(&nfho);
return 0;
}
void cleanup_module(void)
{
nf_unregister_hook(&nfho);
}
对于以上程序我在redhat 9.0 （linux-2.4.20-8）下通过如下方式编译，但是产生了如下错误，困扰了我很多天，您能告诉我产生错误的原因以及解决的方法吗？
gcc -O -c -I/usr/src/linux-2.4/include test1.c
In file included from test1.c:10:
/usr/include/linux/netfilter_ipv4.h:53: `INT_MIN' undeclared here (not in a function)
/usr/include/linux/netfilter_ipv4.h:53: enumerator value for `NF_IP_PRI_FIRST' not integer constant
/usr/include/linux/netfilter_ipv4.h:59: `INT_MAX' undeclared here (not in a function)
/usr/include/linux/netfilter_ipv4.h:59: enumerator value for `NF_IP_PRI_LAST' not integer constant
test1.c:21: warning: `struct net_device' declared inside parameter list
test1.c:21: warning: its scope is only this definition or declaration, which is probably not what you want
test1.c:21: warning: `struct sk_buff' declared inside parameter list
test1.c: In function `init_module':
test1.c:37: invalid use of undefined type `struct nf_hook_ops'
test1.c:38: invalid use of undefined type `struct nf_hook_ops'
test1.c:39: invalid use of undefined type `struct nf_hook_ops'
test1.c:40: invalid use of undefined type `struct nf_hook_ops'
/usr/include/linux/byteorder/swab.h: At top level:
test1.c:14: storage size of `nfho' isn't known
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