int ipfw_chk(struct ip_fw_args *);
-int ipfw_init(void);
-void ipfw_destroy(void);
-
-typedef int ip_fw_ctl_t(struct sockopt *);
-extern ip_fw_ctl_t *ip_fw_ctl_ptr;
-extern int fw_one_pass;
-extern int fw_enable;
-#ifdef INET6
-extern int fw6_enable;
+int ipfw_hook(void);
+int ipfw6_hook(void);
+int ipfw_unhook(void);
+int ipfw6_unhook(void);
+#ifdef NOTYET
+void ipfw_nat_destroy(void);
#endif
-/* For kernel ipfw_ether and ipfw_bridge. */
-typedef int ip_fw_chk_t(struct ip_fw_args *args);
-extern ip_fw_chk_t *ip_fw_chk_ptr;
+VNET_DECLARE(int, fw_one_pass);
+VNET_DECLARE(int, fw_enable);
+#define V_fw_one_pass VNET(fw_one_pass)
+#define V_fw_enable VNET(fw_enable)
-#ifdef IPFW_INTERNAL
+#ifdef INET6
+VNET_DECLARE(int, fw6_enable);
+#define V_fw6_enable VNET(fw6_enable)
+#endif
struct ip_fw_chain {
struct ip_fw *rules; /* list of rules */
+ struct ip_fw *default_rule;
struct ip_fw *reap; /* list of rules to reap */
LIST_HEAD(, cfg_nat) nat; /* list of nat entries */
struct radix_node_head *tables[IPFW_TABLES_MAX];
struct rwlock rwmtx;
#endif /* !__linux__ */
uint32_t id; /* ruleset id */
+ /*
+ * To optimize jumps, we use a table with skipto_entries pointers
+ * (a power of 2, set with a sysctl depending on available memory).
+ * Entry i points to the first rule i*64k/n <= n < (i+1)*64k/n.
+ * On insert/delete we simply update the relevant entry
+ * with O(1) additional cost. Updates to the sysctl variable
+ * that controls the table are managed at the next add/delete.
+ */
+ int skipto_shift; /* shifts to compute the index in skipto-ptrs */
+ int skipto_size; /* number of entries in the table */
+ struct ip_fw **skipto_ptrs;
+#ifdef IPFW_HASHTABLES
+ struct ipfw_ht *hashtab[IPFW_TABLES_MAX];
+#endif
};
+
+#ifdef IPFW_INTERNAL
+
#define IPFW_LOCK_INIT(_chain) \
rw_init(&(_chain)->rwmtx, "IPFW static rules")
#define IPFW_LOCK_DESTROY(_chain) rw_destroy(&(_chain)->rwmtx)
typedef int ipfw_nat_cfg_t(struct sockopt *);
#endif
+VNET_DECLARE(struct ip_fw_chain, layer3_chain);
+#define V_layer3_chain VNET(layer3_chain)
+
#endif /* _KERNEL */
#endif /* _IPFW2_H */