diff options
Diffstat (limited to 'newlib/libc/sys/linux/include/net/net_osdep.h')
| -rw-r--r-- | newlib/libc/sys/linux/include/net/net_osdep.h | 343 |
1 files changed, 343 insertions, 0 deletions
diff --git a/newlib/libc/sys/linux/include/net/net_osdep.h b/newlib/libc/sys/linux/include/net/net_osdep.h new file mode 100644 index 000000000..19c4b1a4a --- /dev/null +++ b/newlib/libc/sys/linux/include/net/net_osdep.h @@ -0,0 +1,343 @@ +/* $FreeBSD: src/sys/net/net_osdep.h,v 1.8 2002/04/19 04:46:21 suz Exp $ */ +/* $KAME: net_osdep.h,v 1.68 2001/12/21 08:14:58 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: + * - ioctl + * FreeBSD 3 and later warn when sys/ioctl.h is included in a kernel source + * file. For socket ioctl, we are suggested to use sys/sockio.h. + * + * - RTFREE() + * bsdi does not escape this macro using do-clause, so it is recommended + * to escape the macro explicitly. + * e.g. + * if (rt) { + * RTFREE(rt); + * } + * + * - 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[23]: xs x x + * freebsd4: 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; + * FreeBSD 5 + * struct thread *td; + * if (suser(td)) + * 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) + * + * - kernel internal time structure + * FreeBSD 2, NetBSD, OpenBSD, BSD/OS + * mono_time.tv_u?sec, time.tv_u?sec + * FreeBSD [34] + * time_second + * if you need portability, #ifdef out FreeBSD[34], or use microtime(&tv) + * then touch tv.tv_sec (note: microtime is an expensive operation). + * + * - 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. + * we have updated sys/systm.h to include declaration. + * + * - splnet() + * NetBSD 1.4 or later requires splsoftnet(). + * other operating systems use splnet(). + * + * - splimp() + * NetBSD-current (2001/4/13): use splnet() in network, splvm() in vm. + * other operating systems: use splimp(). + * + * - 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 + * + * - IN_MULTICAST/IN_CLASS[A-D] macro. + * OpenBSD and NetBSD: net endian (kernel) or host endian (userland) + * others: always host endian + * + * - (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. + * 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. in KAME environment, IFAREF is + * provided as a compatibility wrapper (use it instead of + * ifa_refcnt++ to reduce #ifdef). + * + * - ifnet.if_lastchange + * freebsd, bsdi, netbsd-current (jun 14 2001-), + * openbsd-current (jun 15 2001-): updated only when IFF_UP changes. + * (RFC1573 ifLastChange interpretation) + * netbsd151, openbsd29: updated whenever packets go through the interface. + * (4.4BSD interpretation) + * + * - kernel compilation options ("options HOGE" in kernel config file) + * freebsd4: sys/conf/options has to have mapping between option + * and a header file (opt_hoge.h). + * netbsd: by default, -DHOGE will go into + * sys/arch/foo/compile/BAR/Makefile. + * if you define mapping in sys/conf/files, you can create + * a header file like opt_hoge.h to help make dependencies. + * bsdi/openbsd: always use -DHOGE in Makefile. there's no need/way + * to have opt_hoge.h. + * + * therefore, opt_hoge.h is mandatory on freebsd4 only. + * + * - MALLOC() macro + * Use it only if the size of the allocation is constant. + * When we do NOT collect statistics about kernel memory usage, the result + * of macro expansion contains a large set of condition branches. If the + * size is not constant, compilation optimization cannot be applied, and + * a bunch of the large branch will be embedded in the kernel code. + * + * - M_COPY_PKTHDR + * openbsd30: M_COPY_PKTHDR is deprecated. use M_MOVE_PKTHDR or + * M_DUP_PKTHDR, depending on how you want to handle m_tag. + * others: M_COPY_PKTHDR is available as usual. + */ + +#ifndef __NET_NET_OSDEP_H_DEFINED_ +#define __NET_NET_OSDEP_H_DEFINED_ +#ifdef _KERNEL + +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 */ +#define IFAREF(ifa) do { ++(ifa)->ifa_refcnt; } while (0) + +#define WITH_CONVERT_AND_STRIP_IP_LEN + +#if 1 /* at this moment, all OSes do this */ +#define WITH_CONVERT_IP_OFF +#endif + +/* + * Deprecated. + */ +#include <sys/module.h> +#define PSEUDO_SET(sym, name) \ + static int name ## _modevent(module_t mod, int type, void *data) \ + { \ + void (*initfunc)(void *) = (void (*)(void *))data; \ + switch (type) { \ + case MOD_LOAD: \ + /* printf(#name " module load\n"); */ \ + initfunc(NULL); \ + break; \ + case MOD_UNLOAD: \ + printf(#name " module unload - not possible for this module type\n"); \ + return EINVAL; \ + } \ + return 0; \ + } \ + static moduledata_t name ## _mod = { \ + #name, \ + name ## _modevent, \ + (void *)sym \ + }; \ + DECLARE_MODULE(name, name ## _mod, SI_SUB_PSEUDO, SI_ORDER_ANY) + +#endif /*_KERNEL*/ +#endif /*__NET_NET_OSDEP_H_DEFINED_ */ |