170 lines
5.4 KiB
C
170 lines
5.4 KiB
C
/* $FreeBSD$ */
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/* $KAME: net_osdep.h,v 1.22 2000/08/15 07:23:10 itojun Exp $ */
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/*
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* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* glue for kernel code programming differences.
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*/
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/*
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* OS dependencies:
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*
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* - struct rt_addrinfo
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* all *BSDs except bsdi4 only have two members; rti_addrs and rti_info[].
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* bsdi4 has additional members; rti_flags, rti_ifa, rti_ifp, and rti_rtm.
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*
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* - side effects of rtrequest[1](RTM_DELETE)
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* BSDI[34]: delete all cloned routes underneath the route.
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* FreeBSD[234]: delete all protocol-cloned routes underneath the route.
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* note that cloned routes from an interface direct route
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* still remain.
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* NetBSD, OpenBSD: no side effects.
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* - privileged process
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* NetBSD, FreeBSD 3
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* struct proc *p;
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* if (p && !suser(p->p_ucred, &p->p_acflag))
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* privileged;
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* FreeBSD 4
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* struct proc *p;
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* if (p && !suser(p))
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* privileged;
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* OpenBSD, BSDI [34], FreeBSD 2
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* struct socket *so;
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* if (so->so_state & SS_PRIV)
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* privileged;
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* - foo_control
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* NetBSD, FreeBSD 3
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* needs to give struct proc * as argument
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* OpenBSD, BSDI [34], FreeBSD 2
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* do not need struct proc *
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* - bpf:
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* OpenBSD, NetBSD, BSDI [34]
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* need caddr_t * (= if_bpf **) and struct ifnet *
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* FreeBSD 2, FreeBSD 3
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* need only struct ifnet * as argument
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* - struct ifnet
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* use queue.h? member names if name
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* --- --- ---
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* FreeBSD 2 no old standard if_name+unit
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* FreeBSD 3 yes strange if_name+unit
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* OpenBSD yes standard if_xname
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* NetBSD yes standard if_xname
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* BSDI [34] no old standard if_name+unit
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* - usrreq
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* NetBSD, OpenBSD, BSDI [34], FreeBSD 2
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* single function with PRU_xx, arguments are mbuf
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* FreeBSD 3
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* separates functions, non-mbuf arguments
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* - {set,get}sockopt
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* NetBSD, OpenBSD, BSDI [34], FreeBSD 2
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* manipulation based on mbuf
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* FreeBSD 3
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* non-mbuf manipulation using sooptcopy{in,out}()
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* - timeout() and untimeout()
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* NetBSD, OpenBSD, BSDI [34], FreeBSD 2
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* timeout() is a void function
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* FreeBSD 3
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* timeout() is non-void, must keep returned value for untimeout()
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* - sysctl
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* NetBSD, OpenBSD
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* foo_sysctl()
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* BSDI [34]
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* foo_sysctl() but with different style
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* FreeBSD 2, FreeBSD 3
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* linker hack
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*
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* - if_ioctl
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* NetBSD, FreeBSD 3, BSDI [34]
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* 2nd argument is u_long cmd
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* FreeBSD 2
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* 2nd argument is int cmd
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* - if attach routines
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* NetBSD
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* void xxattach(int);
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* FreeBSD 2, FreeBSD 3
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* void xxattach(void *);
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* PSEUDO_SET(xxattach, if_xx);
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*
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* - ovbcopy()
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* in NetBSD 1.4 or later, ovbcopy() is not supplied in the kernel.
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* bcopy() is safe against overwrites.
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* - splnet()
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* NetBSD 1.4 or later requires splsoftnet().
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* other operating systems use splnet().
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*
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* - dtom()
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* NEVER USE IT!
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*
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* - struct ifnet for loopback interface
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* BSDI3: struct ifnet loif;
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* BSDI4: struct ifnet *loifp;
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* NetBSD, OpenBSD, FreeBSD2: struct ifnet loif[NLOOP];
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*
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* odd thing is that many of them refers loif as ifnet *loif,
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* not loif[NLOOP], from outside of if_loop.c.
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*
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* - number of bpf pseudo devices
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* others: bpfilter.h, NBPFILTER
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* FreeBSD4: bpf.h, NBPF
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* solution:
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* #if defined(__FreeBSD__) && __FreeBSD__ >= 4
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* #include "bpf.h"
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* #define NBPFILTER NBPF
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* #else
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* #include "bpfilter.h"
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* #endif
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*
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* - protosw for IPv4 (sys/netinet)
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* FreeBSD4: struct ipprotosw in netinet/ipprotosw.h
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* others: struct protosw in sys/protosw.h
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*
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* - header files with defopt (opt_xx.h)
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* FreeBSD3: opt_{inet,ipsec,ip6fw,altq}.h
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* FreeBSD4: opt_{inet,inet6,ipsec,ip6fw,altq}.h
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* NetBSD: opt_{inet,ipsec,altq}.h
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* others: does not use defopt
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*
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* - IN_MULTICAST/IN_CLASS[A-D] macro.
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* OpenBSD and NetBSD: net endian (kernel) or host endian (userland)
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* others: always host endian
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*/
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#ifndef __NET_NET_OSDEP_H_DEFINED_
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#define __NET_NET_OSDEP_H_DEFINED_
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#ifdef _KERNEL
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struct ifnet;
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extern const char *if_name __P((struct ifnet *));
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#define HAVE_OLD_BPF
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#endif /*_KERNEL*/
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#endif /*__NET_NET_OSDEP_H_DEFINED_ */
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