#ifdef __KERNEL__
#include <linux/if.h>
-#include <linux/types.h>
#include <linux/in.h>
#include <linux/ip.h>
#include <linux/skbuff.h>
#endif
+#include <linux/types.h>
#include <linux/compiler.h>
#include <linux/netfilter_ipv4.h>
#include <linux/netfilter/x_tables.h>
#define IPT_FUNCTION_MAXNAMELEN XT_FUNCTION_MAXNAMELEN
-#define IPT_TABLE_MAXNAMELEN XT_FUNCTION_MAXNAMELEN
+#define IPT_TABLE_MAXNAMELEN XT_TABLE_MAXNAMELEN
#define ipt_match xt_match
#define ipt_target xt_target
#define ipt_table xt_table
/* This structure defines each of the firewall rules. Consists of 3
parts which are 1) general IP header stuff 2) match specific
stuff 3) the target to perform if the rule matches */
-struct ipt_entry
-{
+struct ipt_entry {
struct ipt_ip ip;
/* Mark with fields that we care about. */
/*
* New IP firewall options for [gs]etsockopt at the RAW IP level.
* Unlike BSD Linux inherits IP options so you don't have to use a raw
- * socket for this. Instead we check rights in the calls. */
-#define IPT_BASE_CTL XT_BASE_CTL
+ * socket for this. Instead we check rights in the calls.
+ *
+ * ATTENTION: check linux/in.h before adding new number here.
+ */
+#define IPT_BASE_CTL 64
-#define IPT_SO_SET_REPLACE XT_SO_SET_REPLACE
-#define IPT_SO_SET_ADD_COUNTERS XT_SO_SET_ADD_COUNTERS
-#define IPT_SO_SET_MAX XT_SO_SET_MAX
+#define IPT_SO_SET_REPLACE (IPT_BASE_CTL)
+#define IPT_SO_SET_ADD_COUNTERS (IPT_BASE_CTL + 1)
+#define IPT_SO_SET_MAX IPT_SO_SET_ADD_COUNTERS
-#define IPT_SO_GET_INFO XT_SO_GET_INFO
-#define IPT_SO_GET_ENTRIES XT_SO_GET_ENTRIES
-#define IPT_SO_GET_REVISION_MATCH XT_SO_GET_REVISION_MATCH
-#define IPT_SO_GET_REVISION_TARGET XT_SO_GET_REVISION_TARGET
-#define IPT_SO_GET_MAX XT_SO_GET_REVISION_TARGET
+#define IPT_SO_GET_INFO (IPT_BASE_CTL)
+#define IPT_SO_GET_ENTRIES (IPT_BASE_CTL + 1)
+#define IPT_SO_GET_REVISION_MATCH (IPT_BASE_CTL + 2)
+#define IPT_SO_GET_REVISION_TARGET (IPT_BASE_CTL + 3)
+#define IPT_SO_GET_MAX IPT_SO_GET_REVISION_TARGET
#define IPT_CONTINUE XT_CONTINUE
#define IPT_RETURN XT_RETURN
#define IPT_UDP_INV_MASK XT_UDP_INV_MASK
/* ICMP matching stuff */
-struct ipt_icmp
-{
+struct ipt_icmp {
u_int8_t type; /* type to match */
u_int8_t code[2]; /* range of code */
u_int8_t invflags; /* Inverse flags */
#define IPT_ICMP_INV 0x01 /* Invert the sense of type/code test */
/* The argument to IPT_SO_GET_INFO */
-struct ipt_getinfo
-{
+struct ipt_getinfo {
/* Which table: caller fills this in. */
char name[IPT_TABLE_MAXNAMELEN];
unsigned int valid_hooks;
/* Hook entry points: one per netfilter hook. */
- unsigned int hook_entry[NF_IP_NUMHOOKS];
+ unsigned int hook_entry[NF_INET_NUMHOOKS];
/* Underflow points. */
- unsigned int underflow[NF_IP_NUMHOOKS];
+ unsigned int underflow[NF_INET_NUMHOOKS];
/* Number of entries */
unsigned int num_entries;
};
/* The argument to IPT_SO_SET_REPLACE. */
-struct ipt_replace
-{
+struct ipt_replace {
/* Which table. */
char name[IPT_TABLE_MAXNAMELEN];
unsigned int size;
/* Hook entry points. */
- unsigned int hook_entry[NF_IP_NUMHOOKS];
+ unsigned int hook_entry[NF_INET_NUMHOOKS];
/* Underflow points. */
- unsigned int underflow[NF_IP_NUMHOOKS];
+ unsigned int underflow[NF_INET_NUMHOOKS];
/* Information about old entries: */
/* Number of counters (must be equal to current number of entries). */
#define ipt_counters_info xt_counters_info
/* The argument to IPT_SO_GET_ENTRIES. */
-struct ipt_get_entries
-{
+struct ipt_get_entries {
/* Which table: user fills this in. */
char name[IPT_TABLE_MAXNAMELEN];
}
/* fn returns 0 to continue iteration */
-#define IPT_MATCH_ITERATE(e, fn, args...) \
-({ \
- unsigned int __i; \
- int __ret = 0; \
- struct ipt_entry_match *__match; \
- \
- for (__i = sizeof(struct ipt_entry); \
- __i < (e)->target_offset; \
- __i += __match->u.match_size) { \
- __match = (void *)(e) + __i; \
- \
- __ret = fn(__match , ## args); \
- if (__ret != 0) \
- break; \
- } \
- __ret; \
-})
+#define IPT_MATCH_ITERATE(e, fn, args...) \
+ XT_MATCH_ITERATE(struct ipt_entry, e, fn, ## args)
/* fn returns 0 to continue iteration */
-#define IPT_ENTRY_ITERATE(entries, size, fn, args...) \
-({ \
- unsigned int __i; \
- int __ret = 0; \
- struct ipt_entry *__entry; \
- \
- for (__i = 0; __i < (size); __i += __entry->next_offset) { \
- __entry = (void *)(entries) + __i; \
- \
- __ret = fn(__entry , ## args); \
- if (__ret != 0) \
- break; \
- } \
- __ret; \
-})
+#define IPT_ENTRY_ITERATE(entries, size, fn, args...) \
+ XT_ENTRY_ITERATE(struct ipt_entry, entries, size, fn, ## args)
/*
* Main firewall chains definitions and global var's definitions.
#include <linux/init.h>
extern void ipt_init(void) __init;
-#define ipt_register_target(tgt) \
-({ (tgt)->family = AF_INET; \
- xt_register_target(tgt); })
-#define ipt_unregister_target(tgt) xt_unregister_target(tgt)
-
-#define ipt_register_match(mtch) \
-({ (mtch)->family = AF_INET; \
- xt_register_match(mtch); })
-#define ipt_unregister_match(mtch) xt_unregister_match(mtch)
-
-//#define ipt_register_table(tbl, repl) xt_register_table(AF_INET, tbl, repl)
-//#define ipt_unregister_table(tbl) xt_unregister_table(AF_INET, tbl)
-
-extern int ipt_register_table(struct ipt_table *table,
- const struct ipt_replace *repl);
-extern void ipt_unregister_table(struct ipt_table *table);
-
-/* net/sched/ipt.c: Gimme access to your targets! Gets target->me. */
-extern struct ipt_target *ipt_find_target(const char *name, u8 revision);
+extern struct xt_table *ipt_register_table(struct net *net,
+ const struct xt_table *table,
+ const struct ipt_replace *repl);
+extern void ipt_unregister_table(struct net *net, struct xt_table *table);
/* Standard entry. */
-struct ipt_standard
-{
+struct ipt_standard {
struct ipt_entry entry;
struct ipt_standard_target target;
};
-struct ipt_error_target
-{
+struct ipt_error_target {
struct ipt_entry_target target;
char errorname[IPT_FUNCTION_MAXNAMELEN];
};
-struct ipt_error
-{
+struct ipt_error {
struct ipt_entry entry;
struct ipt_error_target target;
};
-extern unsigned int ipt_do_table(struct sk_buff **pskb,
+#define IPT_ENTRY_INIT(__size) \
+{ \
+ .target_offset = sizeof(struct ipt_entry), \
+ .next_offset = (__size), \
+}
+
+#define IPT_STANDARD_INIT(__verdict) \
+{ \
+ .entry = IPT_ENTRY_INIT(sizeof(struct ipt_standard)), \
+ .target = XT_TARGET_INIT(IPT_STANDARD_TARGET, \
+ sizeof(struct xt_standard_target)), \
+ .target.verdict = -(__verdict) - 1, \
+}
+
+#define IPT_ERROR_INIT \
+{ \
+ .entry = IPT_ENTRY_INIT(sizeof(struct ipt_error)), \
+ .target = XT_TARGET_INIT(IPT_ERROR_TARGET, \
+ sizeof(struct ipt_error_target)), \
+ .target.errorname = "ERROR", \
+}
+
+extern unsigned int ipt_do_table(struct sk_buff *skb,
unsigned int hook,
const struct net_device *in,
const struct net_device *out,
- struct ipt_table *table,
- void *userdata);
+ struct xt_table *table);
#define IPT_ALIGN(s) XT_ALIGN(s)
+
+#ifdef CONFIG_COMPAT
+#include <net/compat.h>
+
+struct compat_ipt_entry {
+ struct ipt_ip ip;
+ compat_uint_t nfcache;
+ u_int16_t target_offset;
+ u_int16_t next_offset;
+ compat_uint_t comefrom;
+ struct compat_xt_counters counters;
+ unsigned char elems[0];
+};
+
+/* Helper functions */
+static inline struct ipt_entry_target *
+compat_ipt_get_target(struct compat_ipt_entry *e)
+{
+ return (void *)e + e->target_offset;
+}
+
+#define COMPAT_IPT_ALIGN(s) COMPAT_XT_ALIGN(s)
+
+/* fn returns 0 to continue iteration */
+#define COMPAT_IPT_MATCH_ITERATE(e, fn, args...) \
+ XT_MATCH_ITERATE(struct compat_ipt_entry, e, fn, ## args)
+
+/* fn returns 0 to continue iteration */
+#define COMPAT_IPT_ENTRY_ITERATE(entries, size, fn, args...) \
+ XT_ENTRY_ITERATE(struct compat_ipt_entry, entries, size, fn, ## args)
+
+/* fn returns 0 to continue iteration */
+#define COMPAT_IPT_ENTRY_ITERATE_CONTINUE(entries, size, n, fn, args...) \
+ XT_ENTRY_ITERATE_CONTINUE(struct compat_ipt_entry, entries, size, n, \
+ fn, ## args)
+
+#endif /* CONFIG_COMPAT */
#endif /*__KERNEL__*/
#endif /* _IPTABLES_H */
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff