1 1.33 ryo /* $NetBSD: pfil.h,v 1.33 2017/01/16 09:28:40 ryo Exp $ */ 2 1.1 mrg 3 1.1 mrg /* 4 1.1 mrg * Copyright (c) 1996 Matthew R. Green 5 1.1 mrg * All rights reserved. 6 1.1 mrg * 7 1.1 mrg * Redistribution and use in source and binary forms, with or without 8 1.1 mrg * modification, are permitted provided that the following conditions 9 1.1 mrg * are met: 10 1.1 mrg * 1. Redistributions of source code must retain the above copyright 11 1.1 mrg * notice, this list of conditions and the following disclaimer. 12 1.1 mrg * 2. Redistributions in binary form must reproduce the above copyright 13 1.1 mrg * notice, this list of conditions and the following disclaimer in the 14 1.1 mrg * documentation and/or other materials provided with the distribution. 15 1.1 mrg * 16 1.1 mrg * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 1.1 mrg * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 1.1 mrg * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 1.1 mrg * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 1.1 mrg * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 1.1 mrg * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 1.1 mrg * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 1.1 mrg * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 1.1 mrg * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 1.1 mrg * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 1.1 mrg * SUCH DAMAGE. 27 1.1 mrg */ 28 1.1 mrg 29 1.1 mrg #ifndef _NET_PFIL_H_ 30 1.1 mrg #define _NET_PFIL_H_ 31 1.21 martin 32 1.10 darrenr #include <sys/queue.h> 33 1.1 mrg 34 1.10 darrenr struct mbuf; 35 1.10 darrenr struct ifnet; 36 1.32 christos struct ifaddr; 37 1.1 mrg 38 1.1 mrg /* 39 1.1 mrg * The packet filter hooks are designed for anything to call them to 40 1.1 mrg * possibly intercept the packet. 41 1.1 mrg */ 42 1.31 rmind typedef int (*pfil_func_t)(void *, struct mbuf **, struct ifnet *, int); 43 1.32 christos typedef void (*pfil_ifunc_t)(void *, unsigned long, void *); 44 1.1 mrg 45 1.1 mrg #define PFIL_IN 0x00000001 46 1.1 mrg #define PFIL_OUT 0x00000002 47 1.23 itojun #define PFIL_ALL (PFIL_IN|PFIL_OUT) 48 1.23 itojun #define PFIL_IFADDR 0x00000008 49 1.24 yamt #define PFIL_IFNET 0x00000010 50 1.24 yamt 51 1.24 yamt /* events notified by PFIL_IFNET */ 52 1.24 yamt #define PFIL_IFNET_ATTACH 0 53 1.24 yamt #define PFIL_IFNET_DETACH 1 54 1.1 mrg 55 1.18 thorpej #define PFIL_TYPE_AF 1 /* key is AF_* type */ 56 1.32 christos #define PFIL_TYPE_IFNET 2 /* key is ifnet or ifaddr pointer */ 57 1.18 thorpej 58 1.31 rmind typedef struct pfil_head pfil_head_t; 59 1.10 darrenr 60 1.27 perry #ifdef _KERNEL 61 1.27 perry 62 1.33 ryo void pfil_init(void); 63 1.31 rmind int pfil_run_hooks(pfil_head_t *, struct mbuf **, struct ifnet *, int); 64 1.32 christos void pfil_run_addrhooks(pfil_head_t *, unsigned long, struct ifaddr *); 65 1.32 christos void pfil_run_ifhooks(pfil_head_t *, unsigned long, struct ifnet *); 66 1.32 christos 67 1.31 rmind int pfil_add_hook(pfil_func_t, void *, int, pfil_head_t *); 68 1.31 rmind int pfil_remove_hook(pfil_func_t, void *, int, pfil_head_t *); 69 1.31 rmind 70 1.32 christos int pfil_add_ihook(pfil_ifunc_t, void *, int, pfil_head_t *); 71 1.32 christos int pfil_remove_ihook(pfil_ifunc_t, void *, int, pfil_head_t *); 72 1.32 christos 73 1.31 rmind pfil_head_t * pfil_head_create(int, void *); 74 1.31 rmind void pfil_head_destroy(pfil_head_t *); 75 1.31 rmind pfil_head_t * pfil_head_get(int, void *); 76 1.4 mrg 77 1.31 rmind /* Packet filtering hook for interfaces (in sys/net/if.c module). */ 78 1.31 rmind extern pfil_head_t *if_pfil; 79 1.1 mrg 80 1.27 perry #endif /* _KERNEL */ 81 1.23 itojun 82 1.25 elad #endif /* !_NET_PFIL_H_ */ 83
Indexes created Sat Sep 20 22:09:52 GMT 2025