#ifndef __LINUX_FILTER_H__
#define __LINUX_FILTER_H__
+#include <linux/compiler.h>
+#include <linux/types.h>
+
+#ifdef __KERNEL__
+#include <asm/atomic.h>
+#endif
+
/*
* Current version of the filter code architecture.
*/
struct sock_filter /* Filter block */
{
- __u16 code; /* Actual filter code */
- __u8 jt; /* Jump true */
- __u8 jf; /* Jump false */
- __u32 k; /* Generic multiuse field */
+ __u16 code; /* Actual filter code */
+ __u8 jt; /* Jump true */
+ __u8 jf; /* Jump false */
+ __u32 k; /* Generic multiuse field */
};
struct sock_fprog /* Required for SO_ATTACH_FILTER. */
{
unsigned short len; /* Number of filter blocks */
- struct sock_filter *filter;
+ struct sock_filter __user *filter;
};
#ifdef __KERNEL__
struct sk_filter
{
atomic_t refcnt;
- unsigned int len; /* Number of filter blocks */
- struct sock_filter insns[0];
+ unsigned int len; /* Number of filter blocks */
+ struct rcu_head rcu;
+ struct sock_filter insns[0];
};
static inline unsigned int sk_filter_len(struct sk_filter *fp)
#define SKF_LL_OFF (-0x200000)
#ifdef __KERNEL__
-extern int sk_run_filter(struct sk_buff *skb, struct sock_filter *filter, int flen);
+struct sk_buff;
+struct sock;
+
+extern unsigned int sk_run_filter(struct sk_buff *skb, struct sock_filter *filter, int flen);
extern int sk_attach_filter(struct sock_fprog *fprog, struct sock *sk);
extern int sk_chk_filter(struct sock_filter *filter, int flen);
#endif /* __KERNEL__ */