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/* Minor modifications to fit on compatibility framework:
   Rusty.Russell@rustcorp.com.au
*/

#ifndef __LINUX_FIREWALL_H
#define __LINUX_FIREWALL_H

/*
 *      Definitions for loadable firewall modules
 */

#define FW_QUEUE        0
#define FW_BLOCK        1
#define FW_ACCEPT       2
#define FW_REJECT       (-1)
#define FW_REDIRECT     3
#define FW_MASQUERADE   4
#define FW_SKIP         5

struct firewall_ops
{
        struct firewall_ops *next;
        int (*fw_forward)(struct firewall_ops *this, int pf,
                          struct net_device *dev, void *arg,
                          struct sk_buff **pskb);
        int (*fw_input)(struct firewall_ops *this, int pf,
                        struct net_device *dev, void *arg,
                        struct sk_buff **pskb);
        int (*fw_output)(struct firewall_ops *this, int pf,
                         struct net_device *dev, void *arg,
                         struct sk_buff **pskb);
        /* These may be NULL. */
        int (*fw_acct_in)(struct firewall_ops *this, int pf,
                          struct net_device *dev, void *arg,
                          struct sk_buff **pskb);
        int (*fw_acct_out)(struct firewall_ops *this, int pf,
                           struct net_device *dev, void *arg,
                           struct sk_buff **pskb);
};

extern int register_firewall(int pf, struct firewall_ops *fw);
extern int unregister_firewall(int pf, struct firewall_ops *fw);

extern int ip_fw_masq_timeouts(void *user, int len);
#endif /* __LINUX_FIREWALL_H */