/*
* 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:
* 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
/*
* 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)
* needs to give struct proc * as argument
* OpenBSD, BSDI [34], FreeBSD 2
* do not need struct proc *
+ *
* - bpf:
- * OpenBSD, NetBSD, BSDI [34]
+ * OpenBSD, NetBSD 1.5, BSDI [34]
* need caddr_t * (= if_bpf **) and struct ifnet *
- * FreeBSD 2, FreeBSD 3
+ * FreeBSD 2, FreeBSD 3, NetBSD post-1.5N
* need only struct ifnet * as argument
+ *
* - struct ifnet
* use queue.h? member names if name
* --- --- ---
* 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
+ * 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
+ * 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 untimeuot()
+ * 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
- * FreeBSD 2, FreeBSD 3
- * linker hack
+ * 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);
* - 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().
* - struct ifnet for loopback interface
* BSDI3: struct ifnet loif;
* BSDI4: struct ifnet *loifp;
- * NetBSD, OpenBSD, FreeBSD2: struct ifnet loif[NLOOP];
+ * 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
-#if defined(__NetBSD__) || defined(__OpenBSD__)
-#define if_name(ifp) ((ifp)->if_xname)
-#else
struct ifnet;
-extern char *if_name __P((struct ifnet *));
-#endif
+extern const char *if_name __P((struct ifnet *));
-#if defined (__APPLE__)
#define HAVE_OLD_BPF
-#endif
-//#if defined(__FreeBSD__) && __FreeBSD__ >= 3
-#if defined (__APPLE__)
#define ifa_list ifa_link
#define if_addrlist if_addrhead
#define if_list if_link
-#endif
-#if defined(__NetBSD__) && __NetBSD_Version__ >= 104000000
-#define ovbcopy bcopy
+/* sys/net/if.h */
+#ifndef __APPLE__
+#define IFAREF(ifa) do { ++(ifa)->ifa_refcnt; } while (0)
#endif
-#if defined(__OpenBSD__) || (defined(__bsdi__) && _BSDI_VERSION >= 199802)
-#define HAVE_NRL_INPCB
+#define WITH_CONVERT_AND_STRIP_IP_LEN
+
+#if 1 /* at this moment, all OSes do this */
+#define WITH_CONVERT_IP_OFF
#endif
#endif /*_KERNEL*/
projects / apple / xnu.git / blobdiff