X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;ds=sidebyside;f=include%2Flinux%2Fnetfilter%2Fx_tables.h;h=e52ce475d19f13796080ba21f24e4464054f0990;hb=f79fca55f9a6fe54635ad32ddc8a38f92a94ec30;hp=6989b22716e6f5d3f54d588397d24a89406fe284;hpb=76108cea065cda58366d16a7eb6ca90d717a1396;p=safe%2Fjmp%2Flinux-2.6

diff --git a/include/linux/netfilter/x_tables.h b/include/linux/netfilter/x_tables.h
index 6989b22..e52ce47 100644
--- a/include/linux/netfilter/x_tables.h
+++ b/include/linux/netfilter/x_tables.h
@@ -173,6 +173,98 @@ struct xt_counters_info
 
 #include <linux/netdevice.h>
 
+/**
+ * struct xt_match_param - parameters for match extensions' match functions
+ *
+ * @in:		input netdevice
+ * @out:	output netdevice
+ * @match:	struct xt_match through which this function was invoked
+ * @matchinfo:	per-match data
+ * @fragoff:	packet is a fragment, this is the data offset
+ * @thoff:	position of transport header relative to skb->data
+ * @hotdrop:	drop packet if we had inspection problems
+ * @family:	Actual NFPROTO_* through which the function is invoked
+ * 		(helpful when match->family == NFPROTO_UNSPEC)
+ */
+struct xt_match_param {
+	const struct net_device *in, *out;
+	const struct xt_match *match;
+	const void *matchinfo;
+	int fragoff;
+	unsigned int thoff;
+	bool *hotdrop;
+	u_int8_t family;
+};
+
+/**
+ * struct xt_mtchk_param - parameters for match extensions'
+ * checkentry functions
+ *
+ * @table:	table the rule is tried to be inserted into
+ * @entryinfo:	the family-specific rule data
+ * 		(struct ipt_ip, ip6t_ip, ebt_entry)
+ * @match:	struct xt_match through which this function was invoked
+ * @matchinfo:	per-match data
+ * @hook_mask:	via which hooks the new rule is reachable
+ */
+struct xt_mtchk_param {
+	const char *table;
+	const void *entryinfo;
+	const struct xt_match *match;
+	void *matchinfo;
+	unsigned int hook_mask;
+	u_int8_t family;
+};
+
+/* Match destructor parameters */
+struct xt_mtdtor_param {
+	const struct xt_match *match;
+	void *matchinfo;
+	u_int8_t family;
+};
+
+/**
+ * struct xt_target_param - parameters for target extensions' target functions
+ *
+ * @hooknum:	hook through which this target was invoked
+ * @target:	struct xt_target through which this function was invoked
+ * @targinfo:	per-target data
+ *
+ * Other fields see above.
+ */
+struct xt_target_param {
+	const struct net_device *in, *out;
+	unsigned int hooknum;
+	const struct xt_target *target;
+	const void *targinfo;
+	u_int8_t family;
+};
+
+/**
+ * struct xt_tgchk_param - parameters for target extensions'
+ * checkentry functions
+ *
+ * @entryinfo:	the family-specific rule data
+ * 		(struct ipt_entry, ip6t_entry, arpt_entry, ebt_entry)
+ *
+ * Other fields see above.
+ */
+struct xt_tgchk_param {
+	const char *table;
+	const void *entryinfo;
+	const struct xt_target *target;
+	void *targinfo;
+	unsigned int hook_mask;
+	u_int8_t family;
+};
+
+/* Target destructor parameters */
+struct xt_tgdtor_param {
+	const struct xt_target *target;
+	void *targinfo;
+	u_int8_t family;
+};
+
 struct xt_match
 {
 	struct list_head list;
@@ -185,24 +277,13 @@ struct xt_match
 	   non-linear skb, using skb_header_pointer and
 	   skb_ip_make_writable. */
 	bool (*match)(const struct sk_buff *skb,
-		      const struct net_device *in,
-		      const struct net_device *out,
-		      const struct xt_match *match,
-		      const void *matchinfo,
-		      int offset,
-		      unsigned int protoff,
-		      bool *hotdrop);
+		      const struct xt_match_param *);
 
 	/* Called when user tries to insert an entry of this type. */
-	/* Should return true or false. */
-	bool (*checkentry)(const char *tablename,
-			   const void *ip,
-			   const struct xt_match *match,
-			   void *matchinfo,
-			   unsigned int hook_mask);
+	bool (*checkentry)(const struct xt_mtchk_param *);
 
 	/* Called when entry of this type deleted. */
-	void (*destroy)(const struct xt_match *match, void *matchinfo);
+	void (*destroy)(const struct xt_mtdtor_param *);
 
 	/* Called when userspace align differs from kernel space one */
 	void (*compat_from_user)(void *dst, void *src);
@@ -235,24 +316,16 @@ struct xt_target
 	   must now handle non-linear skbs, using skb_copy_bits and
 	   skb_ip_make_writable. */
 	unsigned int (*target)(struct sk_buff *skb,
-			       const struct net_device *in,
-			       const struct net_device *out,
-			       unsigned int hooknum,
-			       const struct xt_target *target,
-			       const void *targinfo);
+			       const struct xt_target_param *);
 
 	/* Called when user tries to insert an entry of this type:
            hook_mask is a bitmask of hooks from which it can be
            called. */
 	/* Should return true or false. */
-	bool (*checkentry)(const char *tablename,
-			   const void *entry,
-			   const struct xt_target *target,
-			   void *targinfo,
-			   unsigned int hook_mask);
+	bool (*checkentry)(const struct xt_tgchk_param *);
 
 	/* Called when entry of this type deleted. */
-	void (*destroy)(const struct xt_target *target, void *targinfo);
+	void (*destroy)(const struct xt_tgdtor_param *);
 
 	/* Called when userspace align differs from kernel space one */
 	void (*compat_from_user)(void *dst, void *src);
@@ -328,12 +401,10 @@ extern void xt_unregister_match(struct xt_match *target);
 extern int xt_register_matches(struct xt_match *match, unsigned int n);
 extern void xt_unregister_matches(struct xt_match *match, unsigned int n);
 
-extern int xt_check_match(const struct xt_match *match, unsigned short family,
-			  unsigned int size, const char *table, unsigned int hook,
-			  unsigned short proto, int inv_proto);
-extern int xt_check_target(const struct xt_target *target, unsigned short family,
-			   unsigned int size, const char *table, unsigned int hook,
-			   unsigned short proto, int inv_proto);
+extern int xt_check_match(struct xt_mtchk_param *,
+			  unsigned int size, u_int8_t proto, bool inv_proto);
+extern int xt_check_target(struct xt_tgchk_param *,
+			   unsigned int size, u_int8_t proto, bool inv_proto);
 
 extern struct xt_table *xt_register_table(struct net *net,
 					  struct xt_table *table,