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/* $FreeBSD$ */
/* $KAME: net_osdep.h,v 1.22 2000/08/15 07:23:10 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.
*/
/*
* glue for kernel code programming differences.
*/
/*
* OS dependencies:
*
* - struct rt_addrinfo
* all *BSDs except bsdi4 only have two members; rti_addrs and rti_info[].
* bsdi4 has additional members; rti_flags, rti_ifa, rti_ifp, and rti_rtm.
*
* - side effects of rtrequest[1](RTM_DELETE)
* BSDI[34]: delete all cloned routes underneath the route.
* FreeBSD[234]: delete all protocol-cloned routes underneath the route.
* note that cloned routes from an interface direct route
* still remain.
* NetBSD, OpenBSD: no side effects.
* - privileged process
* NetBSD, FreeBSD 3
* struct proc *p;
* if (p && !suser(p->p_ucred, &p->p_acflag))
* privileged;
* FreeBSD 4
* struct proc *p;
* if (p && !suser(p))
* privileged;
* OpenBSD, BSDI [34], FreeBSD 2
* struct socket *so;
* if (so->so_state & SS_PRIV)
* privileged;
* - foo_control
* NetBSD, FreeBSD 3
* needs to give struct proc * as argument
* OpenBSD, BSDI [34], FreeBSD 2
* do not need struct proc *
* - bpf:
* OpenBSD, NetBSD, BSDI [34]
* need caddr_t * (= if_bpf **) and struct ifnet *
* FreeBSD 2, FreeBSD 3
* need only struct ifnet * as argument
* - struct ifnet
* use queue.h? member names if name
* --- --- ---
* FreeBSD 2 no old standard if_name+unit
* FreeBSD 3 yes strange if_name+unit
* OpenBSD yes standard if_xname
* NetBSD yes standard if_xname
* BSDI [34] no old standard if_name+unit
* - usrreq
* NetBSD, OpenBSD, BSDI [34], FreeBSD 2
* single function with PRU_xx, arguments are mbuf
* FreeBSD 3
* separates functions, non-mbuf arguments
* - {set,get}sockopt
* NetBSD, OpenBSD, BSDI [34], FreeBSD 2
* manipulation based on mbuf
* FreeBSD 3
* non-mbuf manipulation using sooptcopy{in,out}()
* - timeout() and untimeout()
* NetBSD, OpenBSD, BSDI [34], FreeBSD 2
* timeout() is a void function
* FreeBSD 3
* timeout() is non-void, must keep returned value for untimeout()
* - sysctl
* NetBSD, OpenBSD
* foo_sysctl()
* BSDI [34]
* foo_sysctl() but with different style
* FreeBSD 2, FreeBSD 3
* linker hack
*
* - if_ioctl
* NetBSD, FreeBSD 3, BSDI [34]
* 2nd argument is u_long cmd
* FreeBSD 2
* 2nd argument is int cmd
* - if attach routines
* NetBSD
* void xxattach(int);
* FreeBSD 2, FreeBSD 3
* void xxattach(void *);
* PSEUDO_SET(xxattach, if_xx);
*
* - ovbcopy()
* in NetBSD 1.4 or later, ovbcopy() is not supplied in the kernel.
* bcopy() is safe against overwrites.
* - splnet()
* NetBSD 1.4 or later requires splsoftnet().
* other operating systems use splnet().
*
* - dtom()
* NEVER USE IT!
*
* - struct ifnet for loopback interface
* BSDI3: struct ifnet loif;
* BSDI4: struct ifnet *loifp;
* NetBSD, OpenBSD, FreeBSD2: struct ifnet loif[NLOOP];
*
* odd thing is that many of them refers loif as ifnet *loif,
* not loif[NLOOP], from outside of if_loop.c.
*
* - number of bpf pseudo devices
* others: bpfilter.h, NBPFILTER
* FreeBSD4: bpf.h, NBPF
* solution:
* #if defined(__FreeBSD__) && __FreeBSD__ >= 4
* #include "bpf.h"
* #define NBPFILTER NBPF
* #else
* #include "bpfilter.h"
* #endif
*
* - protosw for IPv4 (sys/netinet)
* FreeBSD4: struct ipprotosw in netinet/ipprotosw.h
* others: struct protosw in sys/protosw.h
*
* - header files with defopt (opt_xx.h)
* FreeBSD3: opt_{inet,ipsec,ip6fw,altq}.h
* FreeBSD4: opt_{inet,inet6,ipsec,ip6fw,altq}.h
* NetBSD: opt_{inet,ipsec,altq}.h
* others: does not use defopt
*
* - IN_MULTICAST/IN_CLASS[A-D] macro.
* OpenBSD and NetBSD: net endian (kernel) or host endian (userland)
* others: always host endian
*/
#ifndef __NET_NET_OSDEP_H_DEFINED_
#define __NET_NET_OSDEP_H_DEFINED_
#ifdef _KERNEL
struct ifnet;
extern const char *if_name __P((struct ifnet *));
#define HAVE_OLD_BPF
#endif /*_KERNEL*/
#endif /*__NET_NET_OSDEP_H_DEFINED_ */
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