Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files. =================================================================== RCS file: /ftp/cvs/cvsroot/src/sys/netinet/raw_ip.c,v rcsdiff: /ftp/cvs/cvsroot/src/sys/netinet/raw_ip.c,v: warning: Unknown phrases like `commitid ...;' are present. retrieving revision 1.34 retrieving revision 1.68 diff -u -p -r1.34 -r1.68 --- src/sys/netinet/raw_ip.c 1996/09/16 17:45:17 1.34 +++ src/sys/netinet/raw_ip.c 2003/05/27 22:36:38 1.68 @@ -1,4 +1,33 @@ -/* $NetBSD: raw_ip.c,v 1.34 1996/09/16 17:45:17 mycroft Exp $ */ +/* $NetBSD: raw_ip.c,v 1.68 2003/05/27 22:36:38 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. + */ /* * Copyright (c) 1982, 1986, 1988, 1993 @@ -32,9 +61,15 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * @(#)raw_ip.c 8.2 (Berkeley) 1/4/94 + * @(#)raw_ip.c 8.7 (Berkeley) 5/15/95 */ +#include +__KERNEL_RCSID(0, "$NetBSD: raw_ip.c,v 1.68 2003/05/27 22:36:38 itojun Exp $"); + +#include "opt_ipsec.h" +#include "opt_mrouting.h" + #include #include #include @@ -53,13 +88,20 @@ #include #include #include +#include #include #include #include +#ifdef IPSEC +#include +#endif /*IPSEC*/ + struct inpcbtable rawcbtable; +int rip_pcbnotify __P((struct inpcbtable *, struct in_addr, + struct in_addr, int, int, void (*) __P((struct inpcb *, int)))); int rip_bind __P((struct inpcb *, struct mbuf *)); int rip_connect __P((struct inpcb *, struct mbuf *)); void rip_disconnect __P((struct inpcb *)); @@ -98,10 +140,18 @@ rip_input(m, va_alist) va_dcl #endif { - register struct ip *ip = mtod(m, struct ip *); - register struct inpcb *inp; - struct socket *last = 0; + int proto; + struct ip *ip = mtod(m, struct ip *); + struct inpcb *inp; + struct inpcb *last = 0; + struct mbuf *opts = 0; struct sockaddr_in ripsrc; + va_list ap; + + va_start(ap, m); + (void)va_arg(ap, int); /* ignore value, advance ap */ + proto = va_arg(ap, int); + va_end(ap); ripsrc.sin_family = AF_INET; ripsrc.sin_len = sizeof(struct sockaddr_in); @@ -109,10 +159,16 @@ rip_input(m, va_alist) ripsrc.sin_port = 0; bzero((caddr_t)ripsrc.sin_zero, sizeof(ripsrc.sin_zero)); - for (inp = rawcbtable.inpt_queue.cqh_first; - inp != (struct inpcb *)&rawcbtable.inpt_queue; - inp = inp->inp_queue.cqe_next) { - if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != ip->ip_p) + /* + * XXX Compatibility: programs using raw IP expect ip_len + * XXX to have the header length subtracted, and in host order. + * XXX ip_off is also expected to be host order. + */ + ip->ip_len = ntohs(ip->ip_len) - (ip->ip_hl << 2); + NTOHS(ip->ip_off); + + CIRCLEQ_FOREACH(inp, &rawcbtable.inpt_queue, inp_queue) { + if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto) continue; if (!in_nullhost(inp->inp_laddr) && !in_hosteq(inp->inp_laddr, ip->ip_dst)) @@ -122,29 +178,122 @@ rip_input(m, va_alist) continue; if (last) { struct mbuf *n; + +#ifdef IPSEC + /* check AH/ESP integrity. */ + if (ipsec4_in_reject_so(m, last->inp_socket)) { + ipsecstat.in_polvio++; + /* do not inject data to pcb */ + } else +#endif /*IPSEC*/ if ((n = m_copy(m, 0, (int)M_COPYALL)) != NULL) { - if (sbappendaddr(&last->so_rcv, - sintosa(&ripsrc), n, - (struct mbuf *)0) == 0) + if (last->inp_flags & INP_CONTROLOPTS || + last->inp_socket->so_options & SO_TIMESTAMP) + ip_savecontrol(last, &opts, ip, n); + if (sbappendaddr(&last->inp_socket->so_rcv, + sintosa(&ripsrc), n, opts) == 0) { /* should notify about lost packet */ m_freem(n); - else - sorwakeup(last); + if (opts) + m_freem(opts); + } else + sorwakeup(last->inp_socket); + opts = NULL; } } - last = inp->inp_socket; + last = inp; } +#ifdef IPSEC + /* check AH/ESP integrity. */ + if (last && ipsec4_in_reject_so(m, last->inp_socket)) { + m_freem(m); + ipsecstat.in_polvio++; + ipstat.ips_delivered--; + /* do not inject data to pcb */ + } else +#endif /*IPSEC*/ if (last) { - if (sbappendaddr(&last->so_rcv, sintosa(&ripsrc), m, - (struct mbuf *)0) == 0) + if (last->inp_flags & INP_CONTROLOPTS || + last->inp_socket->so_options & SO_TIMESTAMP) + ip_savecontrol(last, &opts, ip, m); + if (sbappendaddr(&last->inp_socket->so_rcv, + sintosa(&ripsrc), m, opts) == 0) { m_freem(m); - else - sorwakeup(last); + if (opts) + m_freem(opts); + } else + sorwakeup(last->inp_socket); } else { - m_freem(m); - ipstat.ips_noproto++; - ipstat.ips_delivered--; + if (inetsw[ip_protox[ip->ip_p]].pr_input == rip_input) { + icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PROTOCOL, + 0, 0); + ipstat.ips_noproto++; + ipstat.ips_delivered--; + } else + m_freem(m); } + return; +} + +int +rip_pcbnotify(table, faddr, laddr, proto, errno, notify) + struct inpcbtable *table; + struct in_addr faddr, laddr; + int proto; + int errno; + void (*notify) __P((struct inpcb *, int)); +{ + struct inpcb *inp, *ninp; + int nmatch; + + nmatch = 0; + for (inp = CIRCLEQ_FIRST(&table->inpt_queue); + inp != (struct inpcb *)&table->inpt_queue; + inp = ninp) { + ninp = inp->inp_queue.cqe_next; + if (inp->inp_ip.ip_p && inp->inp_ip.ip_p != proto) + continue; + if (in_hosteq(inp->inp_faddr, faddr) && + in_hosteq(inp->inp_laddr, laddr)) { + (*notify)(inp, errno); + nmatch++; + } + } + + return nmatch; +} + +void * +rip_ctlinput(cmd, sa, v) + int cmd; + struct sockaddr *sa; + void *v; +{ + struct ip *ip = v; + void (*notify) __P((struct inpcb *, int)) = in_rtchange; + int errno; + + if (sa->sa_family != AF_INET || + sa->sa_len != sizeof(struct sockaddr_in)) + return NULL; + if ((unsigned)cmd >= PRC_NCMDS) + return NULL; + errno = inetctlerrmap[cmd]; + if (PRC_IS_REDIRECT(cmd)) + notify = in_rtchange, ip = 0; + else if (cmd == PRC_HOSTDEAD) + ip = 0; + else if (errno == 0) + return NULL; + if (ip) { + rip_pcbnotify(&rawcbtable, satosin(sa)->sin_addr, + ip->ip_src, ip->ip_p, errno, notify); + + /* XXX mapped address case */ + } else + in_pcbnotifyall(&rawcbtable, satosin(sa)->sin_addr, errno, + notify); + return NULL; } /* @@ -160,8 +309,8 @@ rip_output(m, va_alist) va_dcl #endif { - register struct inpcb *inp; - register struct ip *ip; + struct inpcb *inp; + struct ip *ip; struct mbuf *opts; int flags; va_list ap; @@ -171,25 +320,58 @@ rip_output(m, va_alist) va_end(ap); flags = - (inp->inp_socket->so_options & SO_DONTROUTE) | IP_ALLOWBROADCAST; + (inp->inp_socket->so_options & SO_DONTROUTE) | IP_ALLOWBROADCAST + | IP_RETURNMTU; /* * If the user handed us a complete IP packet, use it. * Otherwise, allocate an mbuf for a header and fill it in. */ if ((inp->inp_flags & INP_HDRINCL) == 0) { - M_PREPEND(m, sizeof(struct ip), M_WAIT); + if ((m->m_pkthdr.len + sizeof(struct ip)) > IP_MAXPACKET) { + m_freem(m); + return (EMSGSIZE); + } + M_PREPEND(m, sizeof(struct ip), M_DONTWAIT); + if (!m) + return (ENOBUFS); ip = mtod(m, struct ip *); ip->ip_tos = 0; - ip->ip_off = 0; + ip->ip_off = htons(0); ip->ip_p = inp->inp_ip.ip_p; - ip->ip_len = m->m_pkthdr.len; + ip->ip_len = htons(m->m_pkthdr.len); ip->ip_src = inp->inp_laddr; ip->ip_dst = inp->inp_faddr; ip->ip_ttl = MAXTTL; opts = inp->inp_options; } else { + if (m->m_pkthdr.len > IP_MAXPACKET) { + m_freem(m); + return (EMSGSIZE); + } ip = mtod(m, struct ip *); + + /* + * If the mbuf is read-only, we need to allocate + * a new mbuf for the header, since we need to + * modify the header. + */ + if (M_READONLY(m)) { + int hlen = ip->ip_hl << 2; + + m = m_copyup(m, hlen, (max_linkhdr + 3) & ~3); + if (m == NULL) + return (ENOMEM); /* XXX */ + ip = mtod(m, struct ip *); + } + + /* XXX userland passes ip_len and ip_off in host order */ + if (m->m_pkthdr.len != ip->ip_len) { + m_freem(m); + return (EINVAL); + } + HTONS(ip->ip_len); + HTONS(ip->ip_off); if (ip->ip_id == 0) ip->ip_id = htons(ip_id++); opts = NULL; @@ -197,7 +379,14 @@ rip_output(m, va_alist) flags |= IP_RAWOUTPUT; ipstat.ips_rawout++; } - return (ip_output(m, opts, &inp->inp_route, flags, inp->inp_moptions)); +#ifdef IPSEC + if (ipsec_setsocket(m, inp->inp_socket) != 0) { + m_freem(m); + return ENOBUFS; + } +#endif /*IPSEC*/ + return (ip_output(m, opts, &inp->inp_route, flags, inp->inp_moptions, + &inp->inp_errormtu)); } /* @@ -210,7 +399,7 @@ rip_ctloutput(op, so, level, optname, m) int level, optname; struct mbuf **m; { - register struct inpcb *inp = sotoinpcb(so); + struct inpcb *inp = sotoinpcb(so); int error = 0; if (level != IPPROTO_IP) { @@ -255,7 +444,8 @@ rip_ctloutput(op, so, level, optname, m) case PRCO_GETOPT: switch (optname) { case IP_HDRINCL: - *m = m_get(M_WAIT, M_SOOPTS); + *m = m_get(M_WAIT, MT_SOOPTS); + MCLAIM((*m), so->so_mowner); (*m)->m_len = sizeof (int); *mtod(*m, int *) = inp->inp_flags & INP_HDRINCL ? 1 : 0; break; @@ -285,7 +475,7 @@ rip_bind(inp, nam) if (nam->m_len != sizeof(*addr)) return (EINVAL); - if (ifnet.tqh_first == 0) + if (TAILQ_FIRST(&ifnet) == 0) return (EADDRNOTAVAIL); if (addr->sin_family != AF_INET && addr->sin_family != AF_IMPLINK) @@ -306,7 +496,7 @@ rip_connect(inp, nam) if (nam->m_len != sizeof(*addr)) return (EINVAL); - if (ifnet.tqh_first == 0) + if (TAILQ_FIRST(&ifnet) == 0) return (EADDRNOTAVAIL); if (addr->sin_family != AF_INET && addr->sin_family != AF_IMPLINK) @@ -329,14 +519,14 @@ u_long rip_recvspace = RIPRCVQ; /*ARGSUSED*/ int rip_usrreq(so, req, m, nam, control, p) - register struct socket *so; + struct socket *so; int req; struct mbuf *m, *nam, *control; struct proc *p; { - register struct inpcb *inp; + struct inpcb *inp; int s; - register int error = 0; + int error = 0; #ifdef MROUTING extern struct socket *ip_mrouter; #endif @@ -345,6 +535,13 @@ rip_usrreq(so, req, m, nam, control, p) return (in_control(so, (long)m, (caddr_t)nam, (struct ifnet *)control, p)); + if (req == PRU_PURGEIF) { + in_pcbpurgeif0(&rawcbtable, (struct ifnet *)control); + in_purgeif((struct ifnet *)control); + in_pcbpurgeif(&rawcbtable, (struct ifnet *)control); + return (0); + } + s = splsoftnet(); inp = sotoinpcb(so); #ifdef DIAGNOSTIC