include/linux/firewall.h

/* */
   1 #ifndef __LINUX_FIREWALL_H
   2 #define __LINUX_FIREWALL_H
   3 
   4 /*
   5  *      Definitions for loadable firewall modules
   6  */
   7 
   8 #define FW_BLOCK        0
   9 #define FW_ACCEPT       1
  10 #define FW_REJECT       (-1)
  11 #define FW_MASQUERADE   2
  12 #define FW_SKIP         3
  13 
  14 struct firewall_ops
  15 {
  16         struct firewall_ops *next;
  17         int (*fw_forward)(struct firewall_ops *this, int pf, 
  18                         struct device *dev, void *phdr);
  19         int (*fw_input)(struct firewall_ops *this, int pf, 
  20                         struct device *dev, void *phdr);
  21         int (*fw_output)(struct firewall_ops *this, int pf, 
  22                         struct device *dev, void *phdr);
  23         /* Data falling in the second 486 cache line isn't used directly
  24            during a firewall call and scan, only by insert/delete and other
  25            unusual cases
  26          */
  27         int fw_pf;              /* Protocol family                      */      
  28         int fw_priority;        /* Priority of chosen firewalls         */
  29 };
  30 
  31 #ifdef __KERNEL__
  32 extern int register_firewall(int pf, struct firewall_ops *fw);
  33 extern int unregister_firewall(int pf, struct firewall_ops *fw);
  34 extern int call_fw_firewall(int pf, struct device *dev, void *phdr);
  35 extern int call_in_firewall(int pf, struct device *dev, void *phdr);
  36 extern int call_out_firewall(int pf, struct device *dev, void *phdr);
  37 extern void fwchain_init(void);
  38 #endif
  39 
  40 #endif
/* */
root/include/linux/firewall.h

INCLUDED FROM
