diff options
Diffstat (limited to 'sys/net/if_loop.c')
| -rw-r--r-- | sys/net/if_loop.c | 106 |
1 files changed, 95 insertions, 11 deletions
diff --git a/sys/net/if_loop.c b/sys/net/if_loop.c index 57dbd3fe733..46eb07ec1fb 100644 --- a/sys/net/if_loop.c +++ b/sys/net/if_loop.c @@ -1,7 +1,36 @@ -/* $OpenBSD: if_loop.c,v 1.11 1999/01/08 00:56:45 deraadt Exp $ */ +/* $OpenBSD: if_loop.c,v 1.12 1999/12/08 06:50:18 itojun Exp $ */ /* $NetBSD: if_loop.c,v 1.15 1996/05/07 02:40:33 thorpej 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. + */ + +/* * Copyright (c) 1982, 1986, 1993 * The Regents of the University of California. All rights reserved. * @@ -78,6 +107,14 @@ didn't get a copy, you may request one from <license@ipv6.nrl.navy.mil>. #include <netinet/ip.h> #endif +#ifdef INET6 +#ifndef INET +#include <netinet/in.h> +#endif +#include <netinet6/in6_var.h> +#include <netinet6/ip6.h> +#endif + #ifdef NS #include <netns/ns.h> #include <netns/ns_if.h> @@ -103,13 +140,12 @@ didn't get a copy, you may request one from <license@ipv6.nrl.navy.mil>. #include <net/bpf.h> #endif -#ifdef INET6 -#include <netinet6/in6.h> -#include <netinet6/in6_var.h> -#endif /* INET6 */ - -#define LOMTU (32768) - +#if defined(LARGE_LOMTU) +#define LOMTU (131072 + MHLEN + MLEN) +#else +#define LOMTU (32768 + MHLEN + MLEN) +#endif + struct ifnet loif[NLOOP]; void @@ -181,6 +217,55 @@ looutput(ifp, m, dst, rt) return (rt->rt_flags & RTF_BLACKHOLE ? 0 : rt->rt_flags & RTF_HOST ? EHOSTUNREACH : ENETUNREACH); } + +#ifndef PULLDOWN_TEST + /* + * KAME requires that the packet to be contiguous on the + * mbuf. We need to make that sure. + * this kind of code should be avoided. + * XXX other conditions to avoid running this part? + */ + if (m && m->m_next != NULL) { + struct mbuf *n; + + MGETHDR(n, M_DONTWAIT, MT_HEADER); + if (n) { + MCLGET(n, M_DONTWAIT); + if ((n->m_flags & M_EXT) == 0) { + m_free(n); + n = NULL; + } + } + if (!n) { + printf("looutput: mbuf allocation failed\n"); + m_freem(m); + return ENOBUFS; + } + + n->m_pkthdr.rcvif = m->m_pkthdr.rcvif; + n->m_pkthdr.len = m->m_pkthdr.len; + if (m->m_pkthdr.len <= MCLBYTES) { + m_copydata(m, 0, m->m_pkthdr.len, mtod(n, caddr_t)); + n->m_len = m->m_pkthdr.len; + m_freem(m); + } else { + m_copydata(m, 0, MCLBYTES, mtod(n, caddr_t)); + m_adj(m, MCLBYTES); + n->m_len = MCLBYTES; + n->m_next = m; + m->m_flags &= ~M_PKTHDR; + } + m = n; + } +#if 0 + if (m && m->m_next != NULL) { + printf("loop: not contiguous...\n"); + m_freem(m); + return ENOBUFS; + } +#endif +#endif + ifp->if_opackets++; ifp->if_obytes += m->m_pkthdr.len; switch (dst->sa_family) { @@ -193,7 +278,7 @@ looutput(ifp, m, dst, rt) #endif #ifdef INET6 case AF_INET6: - ifq = &ipv6intrq; + ifq = &ip6intrq; isr = NETISR_IPV6; break; #endif /* INET6 */ @@ -273,7 +358,7 @@ loioctl(ifp, cmd, data) case SIOCSIFADDR: ifp->if_flags |= IFF_UP; ifa = (struct ifaddr *)data; - if (ifa != 0 && ifa->ifa_addr->sa_family == AF_ISO) + if (ifa != 0 /*&& ifa->ifa_addr->sa_family == AF_ISO*/) ifa->ifa_rtrequest = lortrequest; /* * Everything else is done at a higher level. @@ -293,7 +378,6 @@ loioctl(ifp, cmd, data) case AF_INET: break; #endif - #ifdef INET6 case AF_INET6: break; |