/*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. * Copyright (c) 2018 Andrey V. Elsukov * 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. * * $KAME: if_gif.c,v 1.87 2001/10/19 08:50:27 itojun Exp $ */ #include #include "opt_inet.h" #include "opt_inet6.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef INET #include #include #endif /* INET */ #ifdef INET6 #ifndef INET #include #endif #include #include #include #include #endif /* INET6 */ #include #include #include #include #include #include #include #include #include #include static const char gifname[] = "gif"; MALLOC_DEFINE(M_GIF, "gif", "Generic Tunnel Interface"); static struct sx gif_ioctl_sx; SX_SYSINIT(gif_ioctl_sx, &gif_ioctl_sx, "gif_ioctl"); #define GIF_LOCK_ASSERT() sx_assert(&gif_ioctl_sx, SA_XLOCKED) void (*ng_gif_input_p)(struct ifnet *ifp, struct mbuf **mp, int af); void (*ng_gif_input_orphan_p)(struct ifnet *ifp, struct mbuf *m, int af); void (*ng_gif_attach_p)(struct ifnet *ifp); void (*ng_gif_detach_p)(struct ifnet *ifp); #ifdef VIMAGE static void gif_reassign(struct ifnet *, struct vnet *, char *); #endif static void gif_delete_tunnel(struct gif_softc *); static int gif_ioctl(struct ifnet *, u_long, caddr_t); static int gif_transmit(struct ifnet *, struct mbuf *); static void gif_qflush(struct ifnet *); static int gif_clone_create(struct if_clone *, char *, size_t, struct ifc_data *, struct ifnet **); static int gif_clone_destroy(struct if_clone *, struct ifnet *, uint32_t); static int gif_clone_create_nl(struct if_clone *, char *, size_t, struct ifc_data_nl *); static int gif_clone_modify_nl(struct ifnet *, struct ifc_data_nl *); static void gif_clone_dump_nl(struct ifnet *, struct nl_writer *); static int gif_set_addr_nl(struct gif_softc *, struct nl_pstate *, struct sockaddr *, struct sockaddr *); static int gif_set_flags_nl(struct gif_softc *, struct nl_pstate *, uint32_t); VNET_DEFINE_STATIC(struct if_clone *, gif_cloner); #define V_gif_cloner VNET(gif_cloner) SYSCTL_DECL(_net_link); static SYSCTL_NODE(_net_link, IFT_GIF, gif, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, "Generic Tunnel Interface"); #ifndef MAX_GIF_NEST /* * This macro controls the default upper limitation on nesting of gif tunnels. * Since, setting a large value to this macro with a careless configuration * may introduce system crash, we don't allow any nestings by default. * If you need to configure nested gif tunnels, you can define this macro * in your kernel configuration file. However, if you do so, please be * careful to configure the tunnels so that it won't make a loop. */ #define MAX_GIF_NEST 1 #endif VNET_DEFINE_STATIC(int, max_gif_nesting) = MAX_GIF_NEST; #define V_max_gif_nesting VNET(max_gif_nesting) SYSCTL_INT(_net_link_gif, OID_AUTO, max_nesting, CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(max_gif_nesting), 0, "Max nested tunnels"); struct nl_parsed_gif { struct sockaddr *ifla_local; struct sockaddr *ifla_remote; uint32_t ifla_flags; }; #define _OUT(_field) offsetof(struct nl_parsed_gif, _field) static const struct nlattr_parser nla_p_gif[] = { { .type = IFLA_IPTUN_LOCAL, .off = _OUT(ifla_local), .cb = nlattr_get_ip }, { .type = IFLA_IPTUN_REMOTE, .off = _OUT(ifla_remote), .cb = nlattr_get_ip }, { .type = IFLA_IPTUN_FLAGS, .off = _OUT(ifla_flags), .cb = nlattr_get_uint32 }, }; #undef _OUT NL_DECLARE_ATTR_PARSER(gif_modify_parser, nla_p_gif); static const struct nlhdr_parser *all_parsers[] = { &gif_modify_parser, }; static int gif_clone_create_nl(struct if_clone *ifc, char *name, size_t len, struct ifc_data_nl *ifd) { struct ifc_data ifd_new = { .flags = IFC_F_SYSSPACE, .unit = ifd->unit, }; return (gif_clone_create(ifc, name, len, &ifd_new, &ifd->ifp)); } static int gif_clone_modify_nl(struct ifnet *ifp, struct ifc_data_nl *ifd) { struct gif_softc *sc; struct nl_parsed_link *lattrs = ifd->lattrs; struct nl_pstate *npt = ifd->npt; struct nl_parsed_gif params = {}; struct nlattr *attrs = lattrs->ifla_idata; struct nlattr_bmask bm; int error; if ((attrs == NULL) || (nl_has_attr(ifd->bm, IFLA_LINKINFO) == 0)) { error = nl_modify_ifp_generic(ifp, lattrs, ifd->bm, npt); return (error); } error = priv_check(curthread, PRIV_NET_GIF); if (error) return (error); nl_get_attrs_bmask_raw(NLA_DATA(attrs), NLA_DATA_LEN(attrs), &bm); if ((error = nl_parse_nested(attrs, &gif_modify_parser, npt, ¶ms)) != 0) return (error); sx_xlock(&gif_ioctl_sx); sc = ifp->if_softc; if (sc == NULL) goto generic; if (nl_has_attr(&bm, IFLA_IPTUN_LOCAL) && nl_has_attr(&bm, IFLA_IPTUN_REMOTE)) error = gif_set_addr_nl(sc, npt, params.ifla_local, params.ifla_remote); else if (nl_has_attr(&bm, IFLA_IPTUN_LOCAL) || nl_has_attr(&bm, IFLA_IPTUN_REMOTE)) { error = EINVAL; nlmsg_report_err_msg(npt, "Specify both remote and local address together"); } if (error == 0 && nl_has_attr(&bm, IFLA_IPTUN_FLAGS)) error = gif_set_flags_nl(sc, npt, params.ifla_flags); generic: sx_xunlock(&gif_ioctl_sx); if (error == 0) error = nl_modify_ifp_generic(ifp, ifd->lattrs, ifd->bm, ifd->npt); return (error); } static void gif_clone_dump_nl(struct ifnet *ifp, struct nl_writer *nw) { struct gif_softc *sc; int off, off2; nlattr_add_u32(nw, IFLA_LINK, ifp->if_index); nlattr_add_string(nw, IFLA_IFNAME, ifp->if_xname); off = nlattr_add_nested(nw, IFLA_LINKINFO); if (off == 0) return; nlattr_add_string(nw, IFLA_INFO_KIND, gifname); off2 = nlattr_add_nested(nw, IFLA_INFO_DATA); if (off2 == 0) { nlattr_set_len(nw, off); return; } sx_slock(&gif_ioctl_sx); sc = ifp->if_softc; if (sc == NULL) goto ret; if (sc->gif_family == AF_INET) { #ifdef INET struct in_aliasreq in; if (in_gif_ioctl(sc, SIOCGIFPSRCADDR, (caddr_t)&in) == 0) nlattr_add_in_addr(nw, IFLA_IPTUN_LOCAL, &in.ifra_addr.sin_addr); if (in_gif_ioctl(sc, SIOCGIFPDSTADDR, (caddr_t)&in) == 0) nlattr_add_in_addr(nw, IFLA_IPTUN_REMOTE, &in.ifra_addr.sin_addr); #endif } else if (sc->gif_family == AF_INET6) { #ifdef INET6 struct in6_aliasreq in6; if (in6_gif_ioctl(sc, SIOCGIFPSRCADDR_IN6, (caddr_t)&in6) == 0) nlattr_add_in6_addr(nw, IFLA_IPTUN_LOCAL, &in6.ifra_addr.sin6_addr); if (in6_gif_ioctl(sc, SIOCGIFPDSTADDR_IN6, (caddr_t)&in6) == 0) nlattr_add_in6_addr(nw, IFLA_IPTUN_REMOTE, &in6.ifra_addr.sin6_addr); #endif } nlattr_add_u32(nw, IFLA_IPTUN_FLAGS, sc->gif_options); ret: nlattr_set_len(nw, off2); nlattr_set_len(nw, off); sx_sunlock(&gif_ioctl_sx); } static int gif_clone_create(struct if_clone *ifc, char *name, size_t len, struct ifc_data *ifd, struct ifnet **ifpp) { struct gif_softc *sc; sc = malloc(sizeof(struct gif_softc), M_GIF, M_WAITOK | M_ZERO); sc->gif_fibnum = curthread->td_proc->p_fibnum; GIF2IFP(sc) = if_alloc(IFT_GIF); GIF2IFP(sc)->if_softc = sc; if_initname(GIF2IFP(sc), gifname, ifd->unit); GIF2IFP(sc)->if_addrlen = 0; GIF2IFP(sc)->if_mtu = GIF_MTU; GIF2IFP(sc)->if_flags = IFF_POINTOPOINT | IFF_MULTICAST; GIF2IFP(sc)->if_ioctl = gif_ioctl; GIF2IFP(sc)->if_transmit = gif_transmit; GIF2IFP(sc)->if_qflush = gif_qflush; GIF2IFP(sc)->if_output = gif_output; #ifdef VIMAGE GIF2IFP(sc)->if_reassign = gif_reassign; #endif GIF2IFP(sc)->if_capabilities |= IFCAP_LINKSTATE; GIF2IFP(sc)->if_capenable |= IFCAP_LINKSTATE; if_attach(GIF2IFP(sc)); bpfattach(GIF2IFP(sc), DLT_NULL, sizeof(u_int32_t)); if (ng_gif_attach_p != NULL) (*ng_gif_attach_p)(GIF2IFP(sc)); *ifpp = GIF2IFP(sc); return (0); } #ifdef VIMAGE static void gif_reassign(struct ifnet *ifp, struct vnet *new_vnet __unused, char *unused __unused) { struct gif_softc *sc; sx_xlock(&gif_ioctl_sx); sc = ifp->if_softc; if (sc != NULL) gif_delete_tunnel(sc); sx_xunlock(&gif_ioctl_sx); } #endif /* VIMAGE */ static int gif_clone_destroy(struct if_clone *ifc, struct ifnet *ifp, uint32_t flags) { struct gif_softc *sc; sx_xlock(&gif_ioctl_sx); sc = ifp->if_softc; gif_delete_tunnel(sc); ifp->if_softc = NULL; sx_xunlock(&gif_ioctl_sx); if (ng_gif_detach_p != NULL) (*ng_gif_detach_p)(ifp); bpfdetach(ifp); if_detach(ifp); GIF_WAIT(); if_free(ifp); free(sc, M_GIF); return (0); } static void vnet_gif_init(const void *unused __unused) { struct if_clone_addreq_v2 req = { .version = 2, .flags = IFC_F_AUTOUNIT, .match_f = NULL, .create_f = gif_clone_create, .destroy_f = gif_clone_destroy, .create_nl_f = gif_clone_create_nl, .modify_nl_f = gif_clone_modify_nl, .dump_nl_f = gif_clone_dump_nl, }; V_gif_cloner = ifc_attach_cloner(gifname, (struct if_clone_addreq *)&req); #ifdef INET in_gif_init(); #endif #ifdef INET6 in6_gif_init(); #endif } VNET_SYSINIT(vnet_gif_init, SI_SUB_PSEUDO, SI_ORDER_ANY, vnet_gif_init, NULL); static void vnet_gif_uninit(const void *unused __unused) { ifc_detach_cloner(V_gif_cloner); #ifdef INET in_gif_uninit(); #endif #ifdef INET6 in6_gif_uninit(); #endif } VNET_SYSUNINIT(vnet_gif_uninit, SI_SUB_PSEUDO, SI_ORDER_ANY, vnet_gif_uninit, NULL); static int gifmodevent(module_t mod, int type, void *data) { switch (type) { case MOD_LOAD: NL_VERIFY_PARSERS(all_parsers); break; case MOD_UNLOAD: break; default: return (EOPNOTSUPP); } return (0); } static moduledata_t gif_mod = { "if_gif", gifmodevent, 0 }; DECLARE_MODULE(if_gif, gif_mod, SI_SUB_PSEUDO, SI_ORDER_ANY); MODULE_VERSION(if_gif, 1); #define MTAG_GIF 1080679712 static int gif_transmit(struct ifnet *ifp, struct mbuf *m) { struct gif_softc *sc; struct etherip_header *eth; #ifdef INET struct ip *ip; #endif #ifdef INET6 struct ip6_hdr *ip6; uint32_t t; #endif uint32_t af; uint8_t proto, ecn; int error; NET_EPOCH_ASSERT(); #ifdef MAC error = mac_ifnet_check_transmit(ifp, m); if (error) { m_freem(m); goto err; } #endif error = ENETDOWN; sc = ifp->if_softc; if ((ifp->if_flags & IFF_MONITOR) != 0 || (ifp->if_flags & IFF_UP) == 0 || (ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 || sc->gif_family == 0 || (error = if_tunnel_check_nesting(ifp, m, MTAG_GIF, V_max_gif_nesting)) != 0) { m_freem(m); goto err; } /* Now pull back the af that we stashed in the csum_data. */ af = m->m_pkthdr.csum_data; m->m_flags &= ~(M_BCAST|M_MCAST); M_SETFIB(m, sc->gif_fibnum); BPF_MTAP2(ifp, &af, sizeof(af), m); if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); if_inc_counter(ifp, IFCOUNTER_OBYTES, m->m_pkthdr.len); /* inner AF-specific encapsulation */ ecn = 0; switch (af) { #ifdef INET case AF_INET: proto = IPPROTO_IPV4; if (m->m_len < sizeof(struct ip)) m = m_pullup(m, sizeof(struct ip)); if (m == NULL) { error = ENOBUFS; goto err; } ip = mtod(m, struct ip *); ip_ecn_ingress((ifp->if_flags & IFF_LINK1) ? ECN_ALLOWED: ECN_NOCARE, &ecn, &ip->ip_tos); break; #endif #ifdef INET6 case AF_INET6: proto = IPPROTO_IPV6; if (m->m_len < sizeof(struct ip6_hdr)) m = m_pullup(m, sizeof(struct ip6_hdr)); if (m == NULL) { error = ENOBUFS; goto err; } t = 0; ip6 = mtod(m, struct ip6_hdr *); ip6_ecn_ingress((ifp->if_flags & IFF_LINK1) ? ECN_ALLOWED: ECN_NOCARE, &t, &ip6->ip6_flow); ecn = (ntohl(t) >> 20) & 0xff; break; #endif case AF_LINK: KASSERT(ifp->if_bridge != NULL, ("%s: bridge not attached", __func__)); proto = IPPROTO_ETHERIP; M_PREPEND(m, sizeof(struct etherip_header), M_NOWAIT); if (m == NULL) { error = ENOBUFS; goto err; } eth = mtod(m, struct etherip_header *); eth->eip_resvh = 0; eth->eip_ver = ETHERIP_VERSION; eth->eip_resvl = 0; break; default: error = EAFNOSUPPORT; m_freem(m); goto err; } /* XXX should we check if our outer source is legal? */ /* dispatch to output logic based on outer AF */ switch (sc->gif_family) { #ifdef INET case AF_INET: error = in_gif_output(ifp, m, proto, ecn); break; #endif #ifdef INET6 case AF_INET6: error = in6_gif_output(ifp, m, proto, ecn); break; #endif default: m_freem(m); } err: if (error) if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); return (error); } static void gif_qflush(struct ifnet *ifp __unused) { } int gif_output(struct ifnet *ifp, struct mbuf *m, const struct sockaddr *dst, struct route *ro) { uint32_t af; /* BPF writes need to be handled specially. */ if (dst->sa_family == AF_UNSPEC || dst->sa_family == pseudo_AF_HDRCMPLT) memcpy(&af, dst->sa_data, sizeof(af)); else af = RO_GET_FAMILY(ro, dst); /* * Now save the af in the inbound pkt csum data, this is a cheat since * we are using the inbound csum_data field to carry the af over to * the gif_transmit() routine, avoiding using yet another mtag. */ m->m_pkthdr.csum_data = af; return (ifp->if_transmit(ifp, m)); } void gif_input(struct mbuf *m, struct ifnet *ifp, int proto, uint8_t ecn) { struct etherip_header *eip; #ifdef INET struct ip *ip; #endif #ifdef INET6 struct ip6_hdr *ip6; uint32_t t; #endif struct ether_header *eh; struct ifnet *oldifp; int isr, n, af; NET_EPOCH_ASSERT(); if (ifp == NULL) { /* just in case */ m_freem(m); return; } m->m_pkthdr.rcvif = ifp; m_clrprotoflags(m); switch (proto) { #ifdef INET case IPPROTO_IPV4: af = AF_INET; if (m->m_len < sizeof(struct ip)) m = m_pullup(m, sizeof(struct ip)); if (m == NULL) goto drop; ip = mtod(m, struct ip *); if (ip_ecn_egress((ifp->if_flags & IFF_LINK1) ? ECN_ALLOWED: ECN_NOCARE, &ecn, &ip->ip_tos) == 0) { m_freem(m); goto drop; } break; #endif #ifdef INET6 case IPPROTO_IPV6: af = AF_INET6; if (m->m_len < sizeof(struct ip6_hdr)) m = m_pullup(m, sizeof(struct ip6_hdr)); if (m == NULL) goto drop; t = htonl((uint32_t)ecn << 20); ip6 = mtod(m, struct ip6_hdr *); if (ip6_ecn_egress((ifp->if_flags & IFF_LINK1) ? ECN_ALLOWED: ECN_NOCARE, &t, &ip6->ip6_flow) == 0) { m_freem(m); goto drop; } break; #endif case IPPROTO_ETHERIP: af = AF_LINK; break; default: m_freem(m); goto drop; } #ifdef MAC mac_ifnet_create_mbuf(ifp, m); #endif if (bpf_peers_present(ifp->if_bpf)) { uint32_t af1 = af; bpf_mtap2(ifp->if_bpf, &af1, sizeof(af1), m); } if ((ifp->if_flags & IFF_MONITOR) != 0) { if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1); if_inc_counter(ifp, IFCOUNTER_IBYTES, m->m_pkthdr.len); m_freem(m); return; } if (ng_gif_input_p != NULL) { (*ng_gif_input_p)(ifp, &m, af); if (m == NULL) goto drop; } /* * Put the packet to the network layer input queue according to the * specified address family. * Note: older versions of gif_input directly called network layer * input functions, e.g. ip6_input, here. We changed the policy to * prevent too many recursive calls of such input functions, which * might cause kernel panic. But the change may introduce another * problem; if the input queue is full, packets are discarded. * The kernel stack overflow really happened, and we believed * queue-full rarely occurs, so we changed the policy. */ switch (af) { #ifdef INET case AF_INET: isr = NETISR_IP; break; #endif #ifdef INET6 case AF_INET6: isr = NETISR_IPV6; break; #endif case AF_LINK: n = sizeof(struct etherip_header) + sizeof(struct ether_header); if (n > m->m_len) m = m_pullup(m, n); if (m == NULL) goto drop; eip = mtod(m, struct etherip_header *); if (eip->eip_ver != ETHERIP_VERSION) { /* discard unknown versions */ m_freem(m); goto drop; } m_adj_decap(m, sizeof(struct etherip_header)); m->m_flags &= ~(M_BCAST|M_MCAST); m->m_pkthdr.rcvif = ifp; if (ifp->if_bridge) { oldifp = ifp; eh = mtod(m, struct ether_header *); if (ETHER_IS_MULTICAST(eh->ether_dhost)) { if (ETHER_IS_BROADCAST(eh->ether_dhost)) m->m_flags |= M_BCAST; else m->m_flags |= M_MCAST; if_inc_counter(ifp, IFCOUNTER_IMCASTS, 1); } BRIDGE_INPUT(ifp, m); if (m != NULL && ifp != oldifp) { /* * The bridge gave us back itself or one of the * members for which the frame is addressed. */ ether_demux(ifp, m); return; } } if (m != NULL) m_freem(m); return; default: if (ng_gif_input_orphan_p != NULL) (*ng_gif_input_orphan_p)(ifp, m, af); else m_freem(m); return; } if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1); if_inc_counter(ifp, IFCOUNTER_IBYTES, m->m_pkthdr.len); M_SETFIB(m, ifp->if_fib); if (V_encap_hash_inbound) encap_set_flowid(m, af); netisr_dispatch(isr, m); return; drop: if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); } static int gif_set_flags(struct gif_softc *sc, u_int opt) { int error = 0; GIF_LOCK_ASSERT(); if (opt & ~GIF_OPTMASK) return (EINVAL); if (sc->gif_options == opt) return (0); switch (sc->gif_family) { #ifdef INET case AF_INET: error = in_gif_setopts(sc, opt); break; #endif #ifdef INET6 case AF_INET6: error = in6_gif_setopts(sc, opt); break; #endif default: /* No need to invoke AF-handler */ sc->gif_options = opt; } return (error); } static int gif_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) { struct ifreq *ifr = (struct ifreq*)data; struct gif_softc *sc; u_int options; int error; switch (cmd) { case SIOCSIFADDR: ifp->if_flags |= IFF_UP; case SIOCADDMULTI: case SIOCDELMULTI: case SIOCGIFMTU: case SIOCSIFFLAGS: return (0); case SIOCSIFMTU: if (ifr->ifr_mtu < GIF_MTU_MIN || ifr->ifr_mtu > GIF_MTU_MAX) return (EINVAL); else ifp->if_mtu = ifr->ifr_mtu; return (0); } sx_xlock(&gif_ioctl_sx); sc = ifp->if_softc; if (sc == NULL) { error = ENXIO; goto bad; } error = 0; switch (cmd) { case SIOCDIFPHYADDR: if (sc->gif_family == 0) break; gif_delete_tunnel(sc); break; #ifdef INET case SIOCSIFPHYADDR: case SIOCGIFPSRCADDR: case SIOCGIFPDSTADDR: error = in_gif_ioctl(sc, cmd, data); break; #endif #ifdef INET6 case SIOCSIFPHYADDR_IN6: case SIOCGIFPSRCADDR_IN6: case SIOCGIFPDSTADDR_IN6: error = in6_gif_ioctl(sc, cmd, data); break; #endif case SIOCGTUNFIB: ifr->ifr_fib = sc->gif_fibnum; break; case SIOCSTUNFIB: if ((error = priv_check(curthread, PRIV_NET_GIF)) != 0) break; if (ifr->ifr_fib >= rt_numfibs) error = EINVAL; else sc->gif_fibnum = ifr->ifr_fib; break; case GIFGOPTS: options = sc->gif_options; error = copyout(&options, ifr_data_get_ptr(ifr), sizeof(options)); break; case GIFSOPTS: if ((error = priv_check(curthread, PRIV_NET_GIF)) != 0) break; error = copyin(ifr_data_get_ptr(ifr), &options, sizeof(options)); if (error) break; error = gif_set_flags(sc, options); break; default: error = EINVAL; break; } if (error == 0 && sc->gif_family != 0) { if ( #ifdef INET cmd == SIOCSIFPHYADDR || #endif #ifdef INET6 cmd == SIOCSIFPHYADDR_IN6 || #endif 0) { if_link_state_change(ifp, LINK_STATE_UP); } } bad: sx_xunlock(&gif_ioctl_sx); return (error); } static void gif_delete_tunnel(struct gif_softc *sc) { GIF_LOCK_ASSERT(); if (sc->gif_family != 0) { CK_LIST_REMOVE(sc, srchash); CK_LIST_REMOVE(sc, chain); /* Wait until it become safe to free gif_hdr */ GIF_WAIT(); free(sc->gif_hdr, M_GIF); } sc->gif_family = 0; GIF2IFP(sc)->if_drv_flags &= ~IFF_DRV_RUNNING; if_link_state_change(GIF2IFP(sc), LINK_STATE_DOWN); } static int gif_set_addr_nl(struct gif_softc *sc, struct nl_pstate *npt, struct sockaddr *src, struct sockaddr *dst) { #if defined(INET) || defined(INET6) union { #ifdef INET struct in_aliasreq in; #endif #ifdef INET6 struct in6_aliasreq in6; #endif } aliasreq; #endif int error; /* XXX: this sanity check runs again in in[6]_gif_ioctl */ if (src->sa_family != dst->sa_family) error = EADDRNOTAVAIL; #ifdef INET else if (src->sa_family == AF_INET) { memcpy(&aliasreq.in.ifra_addr, src, sizeof(struct sockaddr_in)); memcpy(&aliasreq.in.ifra_dstaddr, dst, sizeof(struct sockaddr_in)); error = in_gif_ioctl(sc, SIOCSIFPHYADDR, (caddr_t)&aliasreq.in); } #endif #ifdef INET6 else if (src->sa_family == AF_INET6) { memcpy(&aliasreq.in6.ifra_addr, src, sizeof(struct sockaddr_in6)); memcpy(&aliasreq.in6.ifra_dstaddr, dst, sizeof(struct sockaddr_in6)); error = in6_gif_ioctl(sc, SIOCSIFPHYADDR_IN6, (caddr_t)&aliasreq.in6); } #endif else error = EAFNOSUPPORT; if (error == EADDRNOTAVAIL) nlmsg_report_err_msg(npt, "address is invalid"); if (error == EEXIST) nlmsg_report_err_msg(npt, "remote and local addresses are the same"); if (error == EAFNOSUPPORT) nlmsg_report_err_msg(npt, "address family is not supported"); return (error); } static int gif_set_flags_nl(struct gif_softc *sc, struct nl_pstate *npt, uint32_t opt) { int error; error = gif_set_flags(sc, opt); if (error == EINVAL) nlmsg_report_err_msg(npt, "gif flags are invalid"); return (error); }