/* * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. The rights granted to you under the License * may not be used to create, or enable the creation or redistribution of, * unlawful or unlicensed copies of an Apple operating system, or to * circumvent, violate, or enable the circumvention or violation of, any * terms of an Apple operating system software license agreement. * * Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* * 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: * * - whether the IPv4 input routine convert the byte order of some fileds * of the IP header (x: convert to the host byte order, s: strip the header * length for possible reassembly) * ip_len ip_id ip_off * bsdi3: xs x x * bsdi4: xs x * FreeBSD: xs x * NetBSD: x x * OpenBSD: xs x x * * - ifa_ifwithaf() * bsdi[34], netbsd, and openbsd define it in sys/net/if.c * freebsd (all versions) does not have it. * * - struct rt_addrinfo * bsdi4, netbsd 1.5R and beyond: rti_addrs, rti_info[], rti_flags, rti_ifa, * rti_ifp, and rti_rtm. * others: rti_addrs and rti_info[] only. * * - ifa->ifa_rtrequest * bsdi4, netbsd 1.5R and beyond: rt_addrinfo * * others: sockaddr * (note that sys/net/route.c:rtrequest() has an unsafe * typecast code, from 4.3BSD-reno) * * - 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: 1.5 have no side effects. KAME/netbsd15, and post-1.5R, have * the same effects as of BSDI. * OpenBSD: have no side effects. KAME/openbsd has the same effects as * of BSDI (the change is not merged - yet). * * - 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 1.5, BSDI [34] * need caddr_t * (= if_bpf **) and struct ifnet * * FreeBSD 2, FreeBSD 3, NetBSD post-1.5N * 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 1.4.x, OpenBSD, BSDI [34], FreeBSD 2 * timeout() is a void function * FreeBSD 3 * timeout() is non-void, must keep returned value for untimeout() * callout_xx is also available (sys/callout.h) * NetBSD 1.5 * timeout() is obsoleted, use callout_xx (sys/callout.h) * OpenBSD 2.8 * timeout_{add,set,del} is encouraged (sys/timeout.h) * * - sysctl * NetBSD, OpenBSD * foo_sysctl() * BSDI [34] * foo_sysctl() but with different style. sysctl_int_arr() takes * care of most of the cases. * FreeBSD * linker hack. however, there are freebsd version differences * (how wonderful!). * on FreeBSD[23] function arg #define includes paren. * int foo SYSCTL_HANDLER_ARGS; * on FreeBSD4, function arg #define does not include paren. * int foo(SYSCTL_HANDLER_ARGS); * on some versions, forward reference to the tree is okay. * on some versions, you need SYSCTL_DECL(). you need things * like this. * #ifdef SYSCTL_DECL * SYSCTL_DECL(net_inet_ip6); * #endif * it is hard to share functions between freebsd and non-freebsd. * * - 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 2.8, FreeBSD2: struct ifnet loif[NLOOP]; * OpenBSD 2.9: struct ifnet *lo0ifp; * * 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 * * - protosw in general. * NetBSD 1.5 has extra member for ipfilter (netbsd-current dropped * it so it will go away in 1.6). * NetBSD 1.5 requires PR_LISTEN flag bit with protocols that permit * listen/accept (like tcp). * * - 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 * * - (m->m_flags & M_EXT) != 0 does *not* mean that the max data length of * the mbuf == MCLBYTES. * * - sys/kern/uipc_mbuf.c:m_dup() * freebsd[34]: copies the whole mbuf chain. * netbsd: similar arg with m_copym(). * others: no m_dup(). * * - ifa_refcnt (struct ifaddr) management (IFAREF/IFAFREE). * NetBSD 1.5: always use IFAREF whenever reference gets added. * always use IFAFREE whenever reference gets freed. * IFAFREE frees ifaddr when ifa_refcnt reaches 0. * Darwin: always use ifaref whenever reference gets added. * always use ifafree whenever reference gets freed. * ifaref and ifafree are responsible for determining when to free. * others: do not increase refcnt for ifp->if_addrlist and in_ifaddr. * use IFAFREE once when ifaddr is disconnected from * ifp->if_addrlist and in_ifaddr. IFAFREE frees ifaddr when * ifa_refcnt goes negative. */ #ifndef __NET_NET_OSDEP_H_DEFINED_ #define __NET_NET_OSDEP_H_DEFINED_ #include <sys/appleapiopts.h> #ifdef KERNEL_PRIVATE struct ifnet; extern const char *if_name(struct ifnet *); #define HAVE_OLD_BPF #define ifa_list ifa_link #define if_addrlist if_addrhead #define if_list if_link /* sys/net/if.h */ #ifndef __APPLE__ #define IFAREF(ifa) do { ++(ifa)->ifa_refcnt; } while (0) #endif #define WITH_CONVERT_AND_STRIP_IP_LEN #if 1 /* at this moment, all OSes do this */ #define WITH_CONVERT_IP_OFF #endif #endif /* KERNEL_PRIVATE */ #endif /*__NET_NET_OSDEP_H_DEFINED_ */