NetBSD/sys/netkey/key.h
dyoung 5493f188c7 KNF: de-__P, bzero -> memset, bcmp -> memcmp. Remove extraneous
parentheses in return statements.

Cosmetic: don't open-code TAILQ_FOREACH().

Cosmetic: change types of variables to avoid oodles of casts: in
   in6_src.c, avoid casts by changing several route_in6 pointers
   to struct route pointers.  Remove unnecessary casts to caddr_t
   elsewhere.

Pave the way for eliminating address family-specific route caches:
   soon, struct route will not embed a sockaddr, but it will hold
   a reference to an external sockaddr, instead.  We will set the
   destination sockaddr using rtcache_setdst().  (I created a stub
   for it, but it isn't used anywhere, yet.)  rtcache_free() will
   free the sockaddr.  I have extracted from rtcache_free() a helper
   subroutine, rtcache_clear().  rtcache_clear() will "forget" a
   cached route, but it will not forget the destination by releasing
   the sockaddr.  I use rtcache_clear() instead of rtcache_free()
   in rtcache_update(), because rtcache_update() is not supposed
   to forget the destination.

Constify:

   1 Introduce const accessor for route->ro_dst, rtcache_getdst().

   2 Constify the 'dst' argument to ifnet->if_output().  This
     led me to constify a lot of code called by output routines.

   3 Constify the sockaddr argument to protosw->pr_ctlinput.  This
     led me to constify a lot of code called by ctlinput routines.

   4 Introduce const macros for converting from a generic sockaddr
     to family-specific sockaddrs, e.g., sockaddr_in: satocsin6,
     satocsin, et cetera.
2007-02-17 22:34:07 +00:00

98 lines
3.8 KiB
C

/* $NetBSD: key.h,v 1.21 2007/02/17 22:34:17 dyoung Exp $ */
/* $KAME: key.h,v 1.32 2003/09/07 05:25:20 itojun Exp $ */
/*
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _NETKEY_KEY_H_
#define _NETKEY_KEY_H_
#ifdef _KERNEL
#if defined(_KERNEL_OPT)
#include "opt_ipsec.h"
#endif
#include <sys/queue.h>
extern struct key_cb key_cb;
extern TAILQ_HEAD(_satailq, secasvar) satailq;
extern TAILQ_HEAD(_sptailq, secpolicy) sptailq;
struct secpolicy;
struct secpolicyindex;
struct ipsecrequest;
struct secasvar;
struct sockaddr;
struct socket;
struct sadb_msg;
struct sadb_x_policy;
extern struct secpolicy *key_allocsp __P((u_int16_t, struct secpolicyindex *,
u_int));
extern int key_checkrequest
__P((struct ipsecrequest *isr, struct secasindex *));
extern struct secasvar *key_allocsa(u_int, const void *, const void *, u_int,
u_int32_t, u_int16_t, u_int16_t);
extern struct secpolicy *key_getspbyid __P((u_int32_t));
extern void key_freesp __P((struct secpolicy *));
extern void key_freesav __P((struct secasvar *));
extern struct secpolicy *key_newsp __P((u_int32_t));
extern struct secpolicy *key_msg2sp __P((struct sadb_x_policy *,
size_t, int *));
extern struct mbuf *key_sp2msg __P((struct secpolicy *));
extern int key_cmpspidx_exactly
__P((struct secpolicyindex *, struct secpolicyindex *));
extern int key_cmpspidx_withmask
__P((struct secpolicyindex *, struct secpolicyindex *));
extern int key_spdacquire __P((struct secpolicy *));
extern struct mbuf *key_setdumpsp __P((struct secpolicy *,
u_int8_t, u_int32_t, u_int32_t));
extern void key_timehandler __P((void *));
extern void key_randomfill __P((void *, size_t));
extern void key_freereg __P((struct socket *));
struct mbuf *key_setdumpsa_spi __P((u_int32_t));
extern int key_parse __P((struct mbuf *, struct socket *));
extern void key_init __P((void));
extern int key_checktunnelsanity __P((struct secasvar *, u_int,
caddr_t, caddr_t));
extern void key_sa_recordxfer __P((struct secasvar *, struct mbuf *));
extern void key_sa_routechange __P((struct sockaddr *));
extern void key_sa_stir_iv __P((struct secasvar *));
extern int key_sysctl __P((int *, u_int, void *, size_t *, void *, size_t));
#ifdef IPSEC_NAT_T
u_int16_t key_portfromsaddr __P((struct sockaddr *));
#define KEY_PORTFROMSADDR(saddr) key_portfromsaddr((struct sockaddr *)(saddr))
#endif
#endif /* defined(_KERNEL) */
#endif /* !_NETKEY_KEY_H_ */