diff options
Diffstat (limited to 'sys/netipx/ipx_ip.c')
| -rw-r--r-- | sys/netipx/ipx_ip.c | 471 |
1 files changed, 0 insertions, 471 deletions
diff --git a/sys/netipx/ipx_ip.c b/sys/netipx/ipx_ip.c deleted file mode 100644 index 7b3a304..0000000 --- a/sys/netipx/ipx_ip.c +++ /dev/null @@ -1,471 +0,0 @@ -/*- - * Copyright (c) 1984, 1985, 1986, 1987, 1993 - * The Regents of the University of California. 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. - * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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) 1995, Mike Mitchell - * - * 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. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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. - * - * @(#)ipx_ip.c - */ - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -/* - * Software interface driver for encapsulating IPX in IP. - */ - -#include "opt_inet.h" -#include "opt_ipx.h" - -#ifndef INET -#error The option IPXIP requires option INET. -#endif - -#include <sys/param.h> -#include <sys/kernel.h> -#include <sys/systm.h> -#include <sys/malloc.h> -#include <sys/mbuf.h> -#include <sys/protosw.h> -#include <sys/socket.h> -#include <sys/socketvar.h> -#include <sys/sockio.h> - -#include <net/if.h> -#include <net/if_types.h> -#include <net/netisr.h> -#include <net/route.h> - -#include <netinet/in.h> -#include <netinet/in_systm.h> -#include <netinet/in_var.h> -#include <netinet/ip.h> -#include <netinet/ip_var.h> -#include <netinet/ip_options.h> - -#include <netipx/ipx.h> -#include <netipx/ipx_if.h> -#include <netipx/ipx_ip.h> -#include <netipx/ipx_var.h> - -NET_NEEDS_GIANT("ipx_ip"); - -static struct ifnet ipxipif; -static int ipxipif_units; - -/* List of all hosts and gateways or broadcast addrs. */ -static struct ifnet_en *ipxip_list; - -static struct ifreq ifr_ipxip = {"ipxip0"}; -static struct mbuf *ipxip_badlen; -static struct mbuf *ipxip_lastin; -static int ipxip_hold_input; - -static struct ifnet_en *ipxipattach(void); -static int ipxip_free(struct ifnet *ifp); -static int ipxipioctl(struct ifnet *ifp, u_long cmd, - caddr_t data); -static int ipxipoutput(struct ifnet *ifp, struct mbuf *m, - struct sockaddr *dst, struct rtentry *rt); -static void ipxip_rtchange(struct in_addr *dst); -static void ipxipstart(struct ifnet *ifp); - -static struct ifnet_en * -ipxipattach(void) -{ - struct ifnet_en *m; - struct ifnet *ifp; - - if (ipxipif.if_mtu == 0) { - ifp = &ipxipif; - if_initname(ifp, "ipxip", ipxipif_units); - ifp->if_mtu = LOMTU; - ifp->if_ioctl = ipxipioctl; - ifp->if_output = ipxipoutput; - ifp->if_start = ipxipstart; - ifp->if_flags = IFF_POINTOPOINT; - } - - MALLOC((m), struct ifnet_en *, sizeof(*m), M_PCB, M_NOWAIT | M_ZERO); - if (m == NULL) - return (NULL); - m->ifen_next = ipxip_list; - ipxip_list = m; - ifp = m->ifen_ifp = if_alloc(IFT_IPXIP); - if (ifp == NULL) { - FREE(m, M_PCB); - return (NULL); - } - - if_initname(ifp, "ipxip", ipxipif_units++); - ifp->if_mtu = LOMTU; - ifp->if_ioctl = ipxipioctl; - ifp->if_output = ipxipoutput; - ifp->if_start = ipxipstart; - ifp->if_flags = IFF_POINTOPOINT; - ifp->if_softc = m; - if_attach(ifp); - - return (m); -} - -/* - * Process an ioctl request. - */ -static int -ipxipioctl(struct ifnet *ifp, u_long cmd, caddr_t data) -{ - int error = 0; - struct ifreq *ifr; - - switch (cmd) { - case SIOCSIFADDR: - ifp->if_flags |= IFF_UP; - /* FALLTHROUGH */ - - case SIOCSIFDSTADDR: - /* - * Everything else is done at a higher level. - */ - break; - - case SIOCSIFFLAGS: - ifr = (struct ifreq *)data; - if ((ifr->ifr_flags & IFF_UP) == 0) - error = ipxip_free(ifp); - break; - - default: - error = EINVAL; - } - return (error); -} - -void -ipxip_input(struct mbuf *m, int hlen) -{ - struct ip *ip; - struct ipx *ipx; - int len, s; - - if (ipxip_hold_input) { - if (ipxip_lastin != NULL) - m_freem(ipxip_lastin); - ipxip_lastin = m_copym(m, 0, (int)M_COPYALL, M_DONTWAIT); - } - - /* - * Get IP and IPX header together in first mbuf. - */ - ipxipif.if_ipackets++; - s = sizeof(struct ip) + sizeof(struct ipx); - if (((m->m_flags & M_EXT) || m->m_len < s) && - (m = m_pullup(m, s)) == NULL) { - ipxipif.if_ierrors++; - return; - } - ip = mtod(m, struct ip *); - if (ip->ip_hl > (sizeof(struct ip) >> 2)) { - ip_stripoptions(m, (struct mbuf *)NULL); - if (m->m_len < s) { - if ((m = m_pullup(m, s)) == NULL) { - ipxipif.if_ierrors++; - return; - } - ip = mtod(m, struct ip *); - } - } - - /* - * Make mbuf data length reflect IPX length. If not enough data to - * reflect IPX length, drop. - */ - m->m_data += sizeof(struct ip); - m->m_len -= sizeof(struct ip); - m->m_pkthdr.len -= sizeof(struct ip); - ipx = mtod(m, struct ipx *); - len = ntohs(ipx->ipx_len); - if (len & 1) - len++; /* Preserve Garbage Byte */ - if (ip->ip_len != len) { - if (len > ip->ip_len) { - ipxipif.if_ierrors++; - if (ipxip_badlen) - m_freem(ipxip_badlen); - ipxip_badlen = m; - return; - } - /* - * Any extra will be trimmed off by the IPX routines. - */ - } - - /* - * Deliver to IPX. - */ - netisr_dispatch(NETISR_IPX, m); -} - -static int -ipxipoutput(struct ifnet *ifp, struct mbuf *m, struct sockaddr *dst, - struct rtentry *rt) -{ - struct ifnet_en *ifn = (struct ifnet_en *)ifp->if_softc; - struct route *ro = &(ifn->ifen_route); - struct ipx *ipx = mtod(m, struct ipx *); - struct ip *ip; - int len = 0; - int error; - - ifn->ifen_ifp->if_opackets++; - ipxipif.if_opackets++; - - /* - * Calculate data length and make space for IP header. - */ - len = ntohs(ipx->ipx_len); - if (len & 1) - len++; /* Preserve Garbage Byte */ - - /* - * Following clause not necessary on VAX. - */ - if (3 & (intptr_t)m->m_data) { - /* force longword alignment of ip hdr */ - struct mbuf *m0 = m_gethdr(MT_DATA, M_DONTWAIT); - if (m0 == NULL) { - m_freem(m); - return (ENOBUFS); - } - MH_ALIGN(m0, sizeof(struct ip)); - m0->m_flags = m->m_flags & M_COPYFLAGS; - m0->m_next = m; - m0->m_len = sizeof(struct ip); - m0->m_pkthdr.len = m0->m_len + m->m_len; - m->m_flags &= ~M_PKTHDR; - m = m0; - } else { - M_PREPEND(m, sizeof(struct ip), M_DONTWAIT); - if (m == NULL) - return (ENOBUFS); - } - - /* - * Fill in IP header. - */ - ip = mtod(m, struct ip *); - *(long *)ip = 0; - ip->ip_p = IPPROTO_IDP; - ip->ip_src = ifn->ifen_src; - ip->ip_dst = ifn->ifen_dst; - ip->ip_len = (u_short)len + sizeof(struct ip); - ip->ip_ttl = MAXTTL; - - /* - * Output final datagram. - */ - error = ip_output(m, (struct mbuf *)NULL, ro, SO_BROADCAST, NULL, - NULL); - if (error) { - ifn->ifen_ifp->if_oerrors++; - ifn->ifen_ifp->if_ierrors = error; - } - return (error); -} - -static void -ipxipstart(struct ifnet *ifp) -{ - - panic("ipxip_start called\n"); -} - -int -ipxip_route(struct socket *so, struct sockopt *sopt) -{ - struct in_ifaddr *ia; - struct ifnet_en *ifn; - struct sockaddr_in *src; - struct ipxip_req rq; - struct sockaddr_ipx *ipx_dst; - struct sockaddr_in *ip_dst; - struct ifnet *ifp; - struct route ro; - int error; - - error = sooptcopyin(sopt, &rq, sizeof rq, sizeof rq); - if (error) - return (error); - ipx_dst = (struct sockaddr_ipx *)&rq.rq_ipx; - ip_dst = (struct sockaddr_in *)&rq.rq_ip; - - /* - * First, make sure we already have an IPX address: - */ - if (ipx_ifaddr == NULL) - return (EADDRNOTAVAIL); - - /* - * Now, determine if we can get to the destination. - */ - bzero((caddr_t)&ro, sizeof(ro)); - ro.ro_dst = *(struct sockaddr *)ip_dst; - rtalloc_ign(&ro, 0); - if (ro.ro_rt == NULL || ro.ro_rt->rt_ifp == NULL) - return (ENETUNREACH); - - /* - * And see how he's going to get back to us: i.e., what return IP - * address do we use? - */ - ifp = ro.ro_rt->rt_ifp; - for (ia = TAILQ_FIRST(&in_ifaddrhead); ia != NULL; - ia = TAILQ_NEXT(ia, ia_link)) - if (ia->ia_ifp == ifp) - break; - if (ia == NULL) - ia = TAILQ_FIRST(&in_ifaddrhead); - if (ia == NULL) { - RTFREE(ro.ro_rt); - return (EADDRNOTAVAIL); - } - src = (struct sockaddr_in *)&ia->ia_addr; - - /* - * Is there a free (pseudo-)interface or space? - */ - for (ifn = ipxip_list; ifn != NULL; ifn = ifn->ifen_next) { - if ((ifn->ifen_ifp->if_flags & IFF_UP) == 0) - break; - } - if (ifn == NULL) - ifn = ipxipattach(); - if (ifn == NULL) { - RTFREE(ro.ro_rt); - return (ENOBUFS); - } - ifn->ifen_route = ro; - ifn->ifen_dst = ip_dst->sin_addr; - ifn->ifen_src = src->sin_addr; - - /* - * Now configure this as a point to point link. - */ - ifr_ipxip.ifr_name[4] = '0' + ipxipif_units - 1; - ifr_ipxip.ifr_dstaddr = *(struct sockaddr *)ipx_dst; - ipx_control(so, (int)SIOCSIFDSTADDR, (caddr_t)&ifr_ipxip, - (struct ifnet *)ifn, sopt->sopt_td); - - /* - * Use any of our addresses. - */ - satoipx_addr(ifr_ipxip.ifr_addr).x_host = - ipx_ifaddr->ia_addr.sipx_addr.x_host; - - return (ipx_control(so, (int)SIOCSIFADDR, (caddr_t)&ifr_ipxip, - (struct ifnet *)ifn, sopt->sopt_td)); -} - -static int -ipxip_free(struct ifnet *ifp) -{ - struct ifnet_en *ifn = (struct ifnet_en *)ifp->if_softc; - struct route *ro = & ifn->ifen_route; - - if (ro->ro_rt != NULL) { - RTFREE(ro->ro_rt); - ro->ro_rt = NULL; - } - ifp->if_flags &= ~IFF_UP; - return (0); -} - -void -ipxip_ctlinput(int cmd, struct sockaddr *sa, void *dummy) -{ - struct sockaddr_in *sin; - - if ((unsigned)cmd >= PRC_NCMDS) - return; - if (sa->sa_family != AF_INET && sa->sa_family != AF_IMPLINK) - return; - sin = (struct sockaddr_in *)sa; - if (sin->sin_addr.s_addr == INADDR_ANY) - return; - - switch (cmd) { - case PRC_ROUTEDEAD: - case PRC_REDIRECT_NET: - case PRC_REDIRECT_HOST: - case PRC_REDIRECT_TOSNET: - case PRC_REDIRECT_TOSHOST: - ipxip_rtchange(&sin->sin_addr); - break; - } -} - -static void -ipxip_rtchange(struct in_addr *dst) -{ - struct ifnet_en *ifn; - - for (ifn = ipxip_list; ifn != NULL; ifn = ifn->ifen_next) { - if (ifn->ifen_dst.s_addr == dst->s_addr && - ifn->ifen_route.ro_rt != NULL) { - RTFREE(ifn->ifen_route.ro_rt); - ifn->ifen_route.ro_rt = NULL; - } - } -} |
