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5022 5023 5024 5025 5026 5027 5028 5029 5030 5031 5032 5033 5034 5035 5036 5037 5038 5039 5040 5041 5042 5043 5044 5045 5046 5047 5048 5049 5050 5051 5052 5053 5054 5055 5056 5057 5058 5059 5060 5061 5062 5063 5064 5065 5066 5067 5068 5069 5070 5071 5072 5073 5074 5075 5076 5077 5078 5079 5080 5081 5082 5083 5084 5085 5086 5087 5088 5089 5090 5091 5092 5093 5094 5095 5096 5097 5098 5099 5100 5101 5102 5103 5104 5105 5106 5107 5108 5109 5110 5111 5112 5113 5114 5115 5116 5117 5118 5119 5120 5121 5122 5123 5124 5125 5126 5127 5128 5129 5130 5131 5132 5133 5134 5135 5136 5137 5138 5139 5140 5141 5142 5143 5144 5145 5146 5147 5148 5149 5150 5151 5152 5153 5154 5155 5156 5157 5158 5159 5160 5161 5162 5163 5164 5165 5166 5167 5168 5169 5170 5171 5172 5173 5174 5175 5176 5177 5178 5179 5180 5181 5182 5183 5184 5185 5186 5187 5188 5189 5190 5191 5192 5193 5194 5195 5196 5197 5198 5199 5200 5201 5202 5203 5204 5205 5206 5207 5208 5209 5210 5211 5212 5213 5214 | /* * Copyright (c) 2000-2018 Apple Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. The rights granted to you under the License * may not be used to create, or enable the creation or redistribution of, * unlawful or unlicensed copies of an Apple operating system, or to * circumvent, violate, or enable the circumvention or violation of, any * terms of an Apple operating system software license agreement. * * Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* * Copyright (c) 1980, 1986, 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. * 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. * * @(#)if.c 8.3 (Berkeley) 1/4/94 * $FreeBSD: src/sys/net/if.c,v 1.85.2.9 2001/07/24 19:10:17 brooks Exp $ */ /* * NOTICE: This file was modified by SPARTA, Inc. in 2006 to introduce * support for mandatory and extensible security protections. This notice * is included in support of clause 2.2 (b) of the Apple Public License, * Version 2.0. */ #include <kern/locks.h> #include <sys/param.h> #include <sys/malloc.h> #include <sys/mbuf.h> #include <sys/systm.h> #include <sys/proc.h> #include <sys/socket.h> #include <sys/socketvar.h> #include <sys/protosw.h> #include <sys/kernel.h> #include <sys/sockio.h> #include <sys/syslog.h> #include <sys/sysctl.h> #include <sys/mcache.h> #include <sys/kauth.h> #include <sys/priv.h> #include <kern/zalloc.h> #include <mach/boolean.h> #include <machine/endian.h> #include <pexpert/pexpert.h> #include <net/if.h> #include <net/if_arp.h> #include <net/if_dl.h> #include <net/if_types.h> #include <net/if_var.h> #include <net/if_ppp.h> #include <net/ethernet.h> #include <net/network_agent.h> #include <net/radix.h> #include <net/route.h> #include <net/dlil.h> #include <net/nwk_wq.h> #include <sys/domain.h> #include <libkern/OSAtomic.h> #if INET || INET6 #include <netinet/in.h> #include <netinet/in_var.h> #include <netinet/in_tclass.h> #include <netinet/ip_var.h> #include <netinet/ip6.h> #include <netinet/ip_var.h> #include <netinet/tcp.h> #include <netinet/tcp_var.h> #include <netinet/udp.h> #include <netinet/udp_var.h> #if INET6 #include <netinet6/in6_var.h> #include <netinet6/in6_ifattach.h> #include <netinet6/ip6_var.h> #include <netinet6/nd6.h> #endif /* INET6 */ #endif /* INET || INET6 */ #if CONFIG_MACF_NET #include <security/mac_framework.h> #endif /* * System initialization */ extern char *proc_name_address(void *); /* Lock group and attribute for ifaddr lock */ lck_attr_t *ifa_mtx_attr; lck_grp_t *ifa_mtx_grp; static lck_grp_attr_t *ifa_mtx_grp_attr; static int ifioctl_ifreq(struct socket *, u_long, struct ifreq *, struct proc *); static int ifioctl_ifconf(u_long, caddr_t); static int ifioctl_ifclone(u_long, caddr_t); static int ifioctl_iforder(u_long, caddr_t); static int ifioctl_ifdesc(struct ifnet *, u_long, caddr_t, struct proc *); static int ifioctl_linkparams(struct ifnet *, u_long, caddr_t, struct proc *); static int ifioctl_qstats(struct ifnet *, u_long, caddr_t); static int ifioctl_throttle(struct ifnet *, u_long, caddr_t, struct proc *); static int ifioctl_netsignature(struct ifnet *, u_long, caddr_t); static int ifconf(u_long cmd, user_addr_t ifrp, int * ret_space); __private_extern__ void link_rtrequest(int, struct rtentry *, struct sockaddr *); void if_rtproto_del(struct ifnet *ifp, int protocol); static int if_addmulti_common(struct ifnet *, const struct sockaddr *, struct ifmultiaddr **, int); static int if_delmulti_common(struct ifmultiaddr *, struct ifnet *, const struct sockaddr *, int); static struct ifnet *ifunit_common(const char *, boolean_t); static int if_rtmtu(struct radix_node *, void *); static void if_rtmtu_update(struct ifnet *); static int if_clone_list(int, int *, user_addr_t); MALLOC_DEFINE(M_IFADDR, "ifaddr", "interface address"); struct ifnethead ifnet_head = TAILQ_HEAD_INITIALIZER(ifnet_head); /* ifnet_ordered_head and if_ordered_count are protected by the ifnet_head lock */ struct ifnethead ifnet_ordered_head = TAILQ_HEAD_INITIALIZER(ifnet_ordered_head); static u_int32_t if_ordered_count = 0; static int if_cloners_count; LIST_HEAD(, if_clone) if_cloners = LIST_HEAD_INITIALIZER(if_cloners); static struct ifaddr *ifa_ifwithnet_common(const struct sockaddr *, unsigned int); static void if_attach_ifa_common(struct ifnet *, struct ifaddr *, int); static void if_detach_ifa_common(struct ifnet *, struct ifaddr *, int); static void if_attach_ifma(struct ifnet *, struct ifmultiaddr *, int); static int if_detach_ifma(struct ifnet *, struct ifmultiaddr *, int); static struct ifmultiaddr *ifma_alloc(int); static void ifma_free(struct ifmultiaddr *); static void ifma_trace(struct ifmultiaddr *, int); #if DEBUG static unsigned int ifma_debug = 1; /* debugging (enabled) */ #else static unsigned int ifma_debug; /* debugging (disabled) */ #endif /* !DEBUG */ static unsigned int ifma_size; /* size of zone element */ static struct zone *ifma_zone; /* zone for ifmultiaddr */ #define IFMA_TRACE_HIST_SIZE 32 /* size of trace history */ /* For gdb */ __private_extern__ unsigned int ifma_trace_hist_size = IFMA_TRACE_HIST_SIZE; struct ifmultiaddr_dbg { struct ifmultiaddr ifma; /* ifmultiaddr */ u_int16_t ifma_refhold_cnt; /* # of ref */ u_int16_t ifma_refrele_cnt; /* # of rele */ /* * Circular lists of IFA_ADDREF and IFA_REMREF callers. */ ctrace_t ifma_refhold[IFMA_TRACE_HIST_SIZE]; ctrace_t ifma_refrele[IFMA_TRACE_HIST_SIZE]; /* * Trash list linkage */ TAILQ_ENTRY(ifmultiaddr_dbg) ifma_trash_link; }; /* List of trash ifmultiaddr entries protected by ifma_trash_lock */ static TAILQ_HEAD(, ifmultiaddr_dbg) ifma_trash_head; static decl_lck_mtx_data(, ifma_trash_lock); #define IFMA_ZONE_MAX 64 /* maximum elements in zone */ #define IFMA_ZONE_NAME "ifmultiaddr" /* zone name */ #if INET6 /* * XXX: declare here to avoid to include many inet6 related files.. * should be more generalized? */ extern void nd6_setmtu(struct ifnet *); extern lck_mtx_t *nd6_mutex; #endif SYSCTL_NODE(_net, PF_LINK, link, CTLFLAG_RW|CTLFLAG_LOCKED, 0, "Link layers"); SYSCTL_NODE(_net_link, 0, generic, CTLFLAG_RW|CTLFLAG_LOCKED, 0, "Generic link-management"); SYSCTL_DECL(_net_link_generic_system); static uint32_t if_verbose = 0; SYSCTL_INT(_net_link_generic_system, OID_AUTO, if_verbose, CTLFLAG_RW | CTLFLAG_LOCKED, &if_verbose, 0, ""); boolean_t intcoproc_unrestricted; /* Eventhandler context for interface events */ struct eventhandler_lists_ctxt ifnet_evhdlr_ctxt; void ifa_init(void) { /* Setup lock group and attribute for ifaddr */ ifa_mtx_grp_attr = lck_grp_attr_alloc_init(); ifa_mtx_grp = lck_grp_alloc_init("ifaddr", ifa_mtx_grp_attr); ifa_mtx_attr = lck_attr_alloc_init(); PE_parse_boot_argn("ifa_debug", &ifma_debug, sizeof (ifma_debug)); ifma_size = (ifma_debug == 0) ? sizeof (struct ifmultiaddr) : sizeof (struct ifmultiaddr_dbg); ifma_zone = zinit(ifma_size, IFMA_ZONE_MAX * ifma_size, 0, IFMA_ZONE_NAME); if (ifma_zone == NULL) { panic("%s: failed allocating %s", __func__, IFMA_ZONE_NAME); /* NOTREACHED */ } zone_change(ifma_zone, Z_EXPAND, TRUE); zone_change(ifma_zone, Z_CALLERACCT, FALSE); lck_mtx_init(&ifma_trash_lock, ifa_mtx_grp, ifa_mtx_attr); TAILQ_INIT(&ifma_trash_head); PE_parse_boot_argn("intcoproc_unrestricted", &intcoproc_unrestricted, sizeof (intcoproc_unrestricted)); } /* * Network interface utility routines. * * Routines with ifa_ifwith* names take sockaddr *'s as * parameters. */ int if_index; struct ifaddr **ifnet_addrs; struct ifnet **ifindex2ifnet; __private_extern__ void if_attach_ifa(struct ifnet *ifp, struct ifaddr *ifa) { if_attach_ifa_common(ifp, ifa, 0); } __private_extern__ void if_attach_link_ifa(struct ifnet *ifp, struct ifaddr *ifa) { if_attach_ifa_common(ifp, ifa, 1); } static void if_attach_ifa_common(struct ifnet *ifp, struct ifaddr *ifa, int link) { ifnet_lock_assert(ifp, IFNET_LCK_ASSERT_EXCLUSIVE); IFA_LOCK_ASSERT_HELD(ifa); if (ifa->ifa_ifp != ifp) { panic("%s: Mismatch ifa_ifp=%p != ifp=%p", __func__, ifa->ifa_ifp, ifp); /* NOTREACHED */ } else if (ifa->ifa_debug & IFD_ATTACHED) { panic("%s: Attempt to attach an already attached ifa=%p", __func__, ifa); /* NOTREACHED */ } else if (link && !(ifa->ifa_debug & IFD_LINK)) { panic("%s: Unexpected non-link address ifa=%p", __func__, ifa); /* NOTREACHED */ } else if (!link && (ifa->ifa_debug & IFD_LINK)) { panic("%s: Unexpected link address ifa=%p", __func__, ifa); /* NOTREACHED */ } IFA_ADDREF_LOCKED(ifa); ifa->ifa_debug |= IFD_ATTACHED; if (link) TAILQ_INSERT_HEAD(&ifp->if_addrhead, ifa, ifa_link); else TAILQ_INSERT_TAIL(&ifp->if_addrhead, ifa, ifa_link); if (ifa->ifa_attached != NULL) (*ifa->ifa_attached)(ifa); } __private_extern__ void if_detach_ifa(struct ifnet *ifp, struct ifaddr *ifa) { if_detach_ifa_common(ifp, ifa, 0); } __private_extern__ void if_detach_link_ifa(struct ifnet *ifp, struct ifaddr *ifa) { if_detach_ifa_common(ifp, ifa, 1); } static void if_detach_ifa_common(struct ifnet *ifp, struct ifaddr *ifa, int link) { ifnet_lock_assert(ifp, IFNET_LCK_ASSERT_EXCLUSIVE); IFA_LOCK_ASSERT_HELD(ifa); if (link && !(ifa->ifa_debug & IFD_LINK)) { panic("%s: Unexpected non-link address ifa=%p", __func__, ifa); /* NOTREACHED */ } else if (link && ifa != TAILQ_FIRST(&ifp->if_addrhead)) { panic("%s: Link address ifa=%p not first", __func__, ifa); /* NOTREACHED */ } else if (!link && (ifa->ifa_debug & IFD_LINK)) { panic("%s: Unexpected link address ifa=%p", __func__, ifa); /* NOTREACHED */ } else if (!(ifa->ifa_debug & IFD_ATTACHED)) { panic("%s: Attempt to detach an unattached address ifa=%p", __func__, ifa); /* NOTREACHED */ } else if (ifa->ifa_ifp != ifp) { panic("%s: Mismatch ifa_ifp=%p, ifp=%p", __func__, ifa->ifa_ifp, ifp); /* NOTREACHED */ } else if (ifa->ifa_debug & IFD_DEBUG) { struct ifaddr *ifa2; TAILQ_FOREACH(ifa2, &ifp->if_addrhead, ifa_link) { if (ifa2 == ifa) break; } if (ifa2 != ifa) { panic("%s: Attempt to detach a stray address ifa=%p", __func__, ifa); /* NOTREACHED */ } } TAILQ_REMOVE(&ifp->if_addrhead, ifa, ifa_link); /* This must not be the last reference to the ifaddr */ if (IFA_REMREF_LOCKED(ifa) == NULL) { panic("%s: unexpected (missing) refcnt ifa=%p", __func__, ifa); /* NOTREACHED */ } ifa->ifa_debug &= ~(IFD_ATTACHED | IFD_DETACHING); if (ifa->ifa_detached != NULL) (*ifa->ifa_detached)(ifa); } #define INITIAL_IF_INDEXLIM 8 /* * Function: if_next_index * Purpose: * Return the next available interface index. * Grow the ifnet_addrs[] and ifindex2ifnet[] arrays to accomodate the * added entry when necessary. * * Note: * ifnet_addrs[] is indexed by (if_index - 1), whereas * ifindex2ifnet[] is indexed by ifp->if_index. That requires us to * always allocate one extra element to hold ifindex2ifnet[0], which * is unused. */ int if_next_index(void); __private_extern__ int if_next_index(void) { static int if_indexlim = 0; int new_index; new_index = ++if_index; if (if_index > if_indexlim) { unsigned n; int new_if_indexlim; caddr_t new_ifnet_addrs; caddr_t new_ifindex2ifnet; caddr_t old_ifnet_addrs; old_ifnet_addrs = (caddr_t)ifnet_addrs; if (ifnet_addrs == NULL) { new_if_indexlim = INITIAL_IF_INDEXLIM; } else { new_if_indexlim = if_indexlim << 1; } /* allocate space for the larger arrays */ n = (2 * new_if_indexlim + 1) * sizeof(caddr_t); new_ifnet_addrs = _MALLOC(n, M_IFADDR, M_WAITOK | M_ZERO); if (new_ifnet_addrs == NULL) { --if_index; return (-1); } new_ifindex2ifnet = new_ifnet_addrs + new_if_indexlim * sizeof(caddr_t); if (ifnet_addrs != NULL) { /* copy the existing data */ bcopy((caddr_t)ifnet_addrs, new_ifnet_addrs, if_indexlim * sizeof(caddr_t)); bcopy((caddr_t)ifindex2ifnet, new_ifindex2ifnet, (if_indexlim + 1) * sizeof(caddr_t)); } /* switch to the new tables and size */ ifnet_addrs = (struct ifaddr **)(void *)new_ifnet_addrs; ifindex2ifnet = (struct ifnet **)(void *)new_ifindex2ifnet; if_indexlim = new_if_indexlim; /* release the old data */ if (old_ifnet_addrs != NULL) { _FREE((caddr_t)old_ifnet_addrs, M_IFADDR); } } return (new_index); } /* * Create a clone network interface. */ static int if_clone_create(char *name, int len, void *params) { struct if_clone *ifc; char *dp; int wildcard; u_int32_t bytoff, bitoff; u_int32_t unit; int err; ifc = if_clone_lookup(name, &unit); if (ifc == NULL) return (EINVAL); if (ifunit(name) != NULL) return (EEXIST); bytoff = bitoff = 0; wildcard = (unit == UINT32_MAX); /* * Find a free unit if none was given. */ if (wildcard) { while ((bytoff < ifc->ifc_bmlen) && (ifc->ifc_units[bytoff] == 0xff)) bytoff++; if (bytoff >= ifc->ifc_bmlen) return (ENOSPC); while ((ifc->ifc_units[bytoff] & (1 << bitoff)) != 0) bitoff++; unit = (bytoff << 3) + bitoff; } if (unit > ifc->ifc_maxunit) return (ENXIO); err = (*ifc->ifc_create)(ifc, unit, params); if (err != 0) return (err); if (!wildcard) { bytoff = unit >> 3; bitoff = unit - (bytoff << 3); } /* * Allocate the unit in the bitmap. */ KASSERT((ifc->ifc_units[bytoff] & (1 << bitoff)) == 0, ("%s: bit is already set", __func__)); ifc->ifc_units[bytoff] |= (1 << bitoff); /* In the wildcard case, we need to update the name. */ if (wildcard) { for (dp = name; *dp != '\0'; dp++); if (snprintf(dp, len - (dp-name), "%d", unit) > len - (dp-name) - 1) { /* * This can only be a programmer error and * there's no straightforward way to recover if * it happens. */ panic("%s: interface name too long", __func__); /* NOTREACHED */ } } return (0); } /* * Destroy a clone network interface. */ static int if_clone_destroy(const char *name) { struct if_clone *ifc; struct ifnet *ifp; int bytoff, bitoff; u_int32_t unit; ifc = if_clone_lookup(name, &unit); if (ifc == NULL) return (EINVAL); if (unit < ifc->ifc_minifs) return (EINVAL); ifp = ifunit(name); if (ifp == NULL) return (ENXIO); if (ifc->ifc_destroy == NULL) return (EOPNOTSUPP); (*ifc->ifc_destroy)(ifp); /* * Compute offset in the bitmap and deallocate the unit. */ bytoff = unit >> 3; bitoff = unit - (bytoff << 3); KASSERT((ifc->ifc_units[bytoff] & (1 << bitoff)) != 0, ("%s: bit is already cleared", __func__)); ifc->ifc_units[bytoff] &= ~(1 << bitoff); return (0); } /* * Look up a network interface cloner. */ __private_extern__ struct if_clone * if_clone_lookup(const char *name, u_int32_t *unitp) { struct if_clone *ifc; const char *cp; u_int32_t i; for (ifc = LIST_FIRST(&if_cloners); ifc != NULL; ) { for (cp = name, i = 0; i < ifc->ifc_namelen; i++, cp++) { if (ifc->ifc_name[i] != *cp) goto next_ifc; } goto found_name; next_ifc: ifc = LIST_NEXT(ifc, ifc_list); } /* No match. */ return ((struct if_clone *)NULL); found_name: if (*cp == '\0') { i = UINT32_MAX; } else { for (i = 0; *cp != '\0'; cp++) { if (*cp < '0' || *cp > '9') { /* Bogus unit number. */ return (NULL); } i = (i * 10) + (*cp - '0'); } } if (unitp != NULL) *unitp = i; return (ifc); } /* * Register a network interface cloner. */ int if_clone_attach(struct if_clone *ifc) { int bytoff, bitoff; int err; int len, maxclone; u_int32_t unit; KASSERT(ifc->ifc_minifs - 1 <= ifc->ifc_maxunit, ("%s: %s requested more units then allowed (%d > %d)", __func__, ifc->ifc_name, ifc->ifc_minifs, ifc->ifc_maxunit + 1)); /* * Compute bitmap size and allocate it. */ maxclone = ifc->ifc_maxunit + 1; len = maxclone >> 3; if ((len << 3) < maxclone) len++; ifc->ifc_units = _MALLOC(len, M_CLONE, M_WAITOK | M_ZERO); if (ifc->ifc_units == NULL) return (ENOBUFS); ifc->ifc_bmlen = len; LIST_INSERT_HEAD(&if_cloners, ifc, ifc_list); if_cloners_count++; for (unit = 0; unit < ifc->ifc_minifs; unit++) { err = (*ifc->ifc_create)(ifc, unit, NULL); KASSERT(err == 0, ("%s: failed to create required interface %s%d", __func__, ifc->ifc_name, unit)); /* Allocate the unit in the bitmap. */ bytoff = unit >> 3; bitoff = unit - (bytoff << 3); ifc->ifc_units[bytoff] |= (1 << bitoff); } return (0); } /* * Unregister a network interface cloner. */ void if_clone_detach(struct if_clone *ifc) { LIST_REMOVE(ifc, ifc_list); FREE(ifc->ifc_units, M_CLONE); if_cloners_count--; } /* * Provide list of interface cloners to userspace. */ static int if_clone_list(int count, int *ret_total, user_addr_t dst) { char outbuf[IFNAMSIZ]; struct if_clone *ifc; int error = 0; *ret_total = if_cloners_count; if (dst == USER_ADDR_NULL) { /* Just asking how many there are. */ return (0); } if (count < 0) return (EINVAL); count = (if_cloners_count < count) ? if_cloners_count : count; for (ifc = LIST_FIRST(&if_cloners); ifc != NULL && count != 0; ifc = LIST_NEXT(ifc, ifc_list), count--, dst += IFNAMSIZ) { bzero(outbuf, sizeof(outbuf)); strlcpy(outbuf, ifc->ifc_name, IFNAMSIZ); error = copyout(outbuf, dst, IFNAMSIZ); if (error) break; } return (error); } u_int32_t if_functional_type(struct ifnet *ifp, bool exclude_delegate) { u_int32_t ret = IFRTYPE_FUNCTIONAL_UNKNOWN; if (ifp != NULL) { if (ifp->if_flags & IFF_LOOPBACK) { ret = IFRTYPE_FUNCTIONAL_LOOPBACK; } else if ((exclude_delegate && (ifp->if_subfamily == IFNET_SUBFAMILY_WIFI)) || (!exclude_delegate && IFNET_IS_WIFI(ifp))) { if (ifp->if_eflags & IFEF_AWDL) ret = IFRTYPE_FUNCTIONAL_WIFI_AWDL; else ret = IFRTYPE_FUNCTIONAL_WIFI_INFRA; } else if ((exclude_delegate && (ifp->if_type == IFT_CELLULAR)) || (!exclude_delegate && IFNET_IS_CELLULAR(ifp))) { ret = IFRTYPE_FUNCTIONAL_CELLULAR; } else if (IFNET_IS_INTCOPROC(ifp)) { ret = IFRTYPE_FUNCTIONAL_INTCOPROC; } else if ((exclude_delegate && (ifp->if_family == IFNET_FAMILY_ETHERNET || ifp->if_family == IFNET_FAMILY_FIREWIRE)) || (!exclude_delegate && IFNET_IS_WIRED(ifp))) { ret = IFRTYPE_FUNCTIONAL_WIRED; } } return (ret); } /* * Similar to ifa_ifwithaddr, except that this is IPv4 specific * and that it matches only the local (not broadcast) address. */ __private_extern__ struct in_ifaddr * ifa_foraddr(unsigned int addr) { return (ifa_foraddr_scoped(addr, IFSCOPE_NONE)); } /* * Similar to ifa_foraddr, except with the added interface scope * constraint (unless the caller passes in IFSCOPE_NONE in which * case there is no scope restriction). */ __private_extern__ struct in_ifaddr * ifa_foraddr_scoped(unsigned int addr, unsigned int scope) { struct in_ifaddr *ia = NULL; lck_rw_lock_shared(in_ifaddr_rwlock); TAILQ_FOREACH(ia, INADDR_HASH(addr), ia_hash) { IFA_LOCK_SPIN(&ia->ia_ifa); if (ia->ia_addr.sin_addr.s_addr == addr && (scope == IFSCOPE_NONE || ia->ia_ifp->if_index == scope)) { IFA_ADDREF_LOCKED(&ia->ia_ifa); /* for caller */ IFA_UNLOCK(&ia->ia_ifa); break; } IFA_UNLOCK(&ia->ia_ifa); } lck_rw_done(in_ifaddr_rwlock); return (ia); } #if INET6 /* * Similar to ifa_foraddr, except that this for IPv6. */ __private_extern__ struct in6_ifaddr * ifa_foraddr6(struct in6_addr *addr6) { return (ifa_foraddr6_scoped(addr6, IFSCOPE_NONE)); } __private_extern__ struct in6_ifaddr * ifa_foraddr6_scoped(struct in6_addr *addr6, unsigned int scope) { struct in6_ifaddr *ia = NULL; lck_rw_lock_shared(&in6_ifaddr_rwlock); for (ia = in6_ifaddrs; ia; ia = ia->ia_next) { IFA_LOCK(&ia->ia_ifa); if (IN6_ARE_ADDR_EQUAL(&ia->ia_addr.sin6_addr, addr6) && (scope == IFSCOPE_NONE || ia->ia_ifp->if_index == scope)) { IFA_ADDREF_LOCKED(&ia->ia_ifa); /* for caller */ IFA_UNLOCK(&ia->ia_ifa); break; } IFA_UNLOCK(&ia->ia_ifa); } lck_rw_done(&in6_ifaddr_rwlock); return (ia); } #endif /* INET6 */ /* * Return the first (primary) address of a given family on an interface. */ __private_extern__ struct ifaddr * ifa_ifpgetprimary(struct ifnet *ifp, int family) { struct ifaddr *ifa; ifnet_lock_shared(ifp); TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) { IFA_LOCK_SPIN(ifa); if (ifa->ifa_addr->sa_family == family) { IFA_ADDREF_LOCKED(ifa); /* for caller */ IFA_UNLOCK(ifa); break; } IFA_UNLOCK(ifa); } ifnet_lock_done(ifp); return (ifa); } static inline int ifa_equal(const struct sockaddr *sa1, const struct sockaddr *sa2) { if (!sa1 || !sa2) return 0; if (sa1->sa_len != sa2->sa_len) return 0; return (bcmp(sa1, sa2, sa1->sa_len) == 0); } /* * Locate an interface based on a complete address. */ struct ifaddr * ifa_ifwithaddr_locked(const struct sockaddr *addr) { struct ifnet *ifp; struct ifaddr *ifa; struct ifaddr *result = NULL; for (ifp = ifnet_head.tqh_first; ifp && !result; ifp = ifp->if_link.tqe_next) { ifnet_lock_shared(ifp); for (ifa = ifp->if_addrhead.tqh_first; ifa; ifa = ifa->ifa_link.tqe_next) { IFA_LOCK_SPIN(ifa); if (ifa->ifa_addr->sa_family != addr->sa_family) { IFA_UNLOCK(ifa); continue; } if (ifa_equal(addr, ifa->ifa_addr)) { result = ifa; IFA_ADDREF_LOCKED(ifa); /* for caller */ IFA_UNLOCK(ifa); break; } if ((ifp->if_flags & IFF_BROADCAST) && ifa->ifa_broadaddr != NULL && /* IP6 doesn't have broadcast */ ifa->ifa_broadaddr->sa_len != 0 && ifa_equal(ifa->ifa_broadaddr, addr)) { result = ifa; IFA_ADDREF_LOCKED(ifa); /* for caller */ IFA_UNLOCK(ifa); break; } IFA_UNLOCK(ifa); } ifnet_lock_done(ifp); } return (result); } struct ifaddr * ifa_ifwithaddr(const struct sockaddr *addr) { struct ifaddr *result = NULL; ifnet_head_lock_shared(); result = ifa_ifwithaddr_locked(addr); ifnet_head_done(); return (result); } /* * Locate the point to point interface with a given destination address. */ /*ARGSUSED*/ struct ifaddr * ifa_ifwithdstaddr(const struct sockaddr *addr) { struct ifnet *ifp; struct ifaddr *ifa; struct ifaddr *result = NULL; ifnet_head_lock_shared(); for (ifp = ifnet_head.tqh_first; ifp && !result; ifp = ifp->if_link.tqe_next) { if ((ifp->if_flags & IFF_POINTOPOINT)) { ifnet_lock_shared(ifp); for (ifa = ifp->if_addrhead.tqh_first; ifa; ifa = ifa->ifa_link.tqe_next) { IFA_LOCK_SPIN(ifa); if (ifa->ifa_addr->sa_family != addr->sa_family) { IFA_UNLOCK(ifa); continue; } if (ifa_equal(addr, ifa->ifa_dstaddr)) { result = ifa; IFA_ADDREF_LOCKED(ifa); /* for caller */ IFA_UNLOCK(ifa); break; } IFA_UNLOCK(ifa); } ifnet_lock_done(ifp); } } ifnet_head_done(); return (result); } /* * Locate the source address of an interface based on a complete address. */ struct ifaddr * ifa_ifwithaddr_scoped_locked(const struct sockaddr *addr, unsigned int ifscope) { struct ifaddr *result = NULL; struct ifnet *ifp; if (ifscope == IFSCOPE_NONE) return (ifa_ifwithaddr_locked(addr)); if (ifscope > (unsigned int)if_index) { return (NULL); } ifp = ifindex2ifnet[ifscope]; if (ifp != NULL) { struct ifaddr *ifa = NULL; /* * This is suboptimal; there should be a better way * to search for a given address of an interface * for any given address family. */ ifnet_lock_shared(ifp); for (ifa = ifp->if_addrhead.tqh_first; ifa != NULL; ifa = ifa->ifa_link.tqe_next) { IFA_LOCK_SPIN(ifa); if (ifa->ifa_addr->sa_family != addr->sa_family) { IFA_UNLOCK(ifa); continue; } if (ifa_equal(addr, ifa->ifa_addr)) { result = ifa; IFA_ADDREF_LOCKED(ifa); /* for caller */ IFA_UNLOCK(ifa); break; } if ((ifp->if_flags & IFF_BROADCAST) && ifa->ifa_broadaddr != NULL && /* IP6 doesn't have broadcast */ ifa->ifa_broadaddr->sa_len != 0 && ifa_equal(ifa->ifa_broadaddr, addr)) { result = ifa; IFA_ADDREF_LOCKED(ifa); /* for caller */ IFA_UNLOCK(ifa); break; } IFA_UNLOCK(ifa); } ifnet_lock_done(ifp); } return (result); } struct ifaddr * ifa_ifwithaddr_scoped(const struct sockaddr *addr, unsigned int ifscope) { struct ifaddr *result = NULL; ifnet_head_lock_shared(); result = ifa_ifwithaddr_scoped_locked(addr, ifscope); ifnet_head_done(); return (result); } struct ifaddr * ifa_ifwithnet(const struct sockaddr *addr) { return (ifa_ifwithnet_common(addr, IFSCOPE_NONE)); } struct ifaddr * ifa_ifwithnet_scoped(const struct sockaddr *addr, unsigned int ifscope) { return (ifa_ifwithnet_common(addr, ifscope)); } /* * Find an interface on a specific network. If many, choice * is most specific found. */ static struct ifaddr * ifa_ifwithnet_common(const struct sockaddr *addr, unsigned int ifscope) { struct ifnet *ifp; struct ifaddr *ifa = NULL; struct ifaddr *ifa_maybe = NULL; u_int af = addr->sa_family; const char *addr_data = addr->sa_data, *cplim; #if INET6 if (af != AF_INET && af != AF_INET6) #else if (af != AF_INET) #endif /* !INET6 */ ifscope = IFSCOPE_NONE; ifnet_head_lock_shared(); /* * AF_LINK addresses can be looked up directly by their index number, * so do that if we can. */ if (af == AF_LINK) { const struct sockaddr_dl *sdl = (const struct sockaddr_dl *)(uintptr_t)(size_t)addr; if (sdl->sdl_index && sdl->sdl_index <= if_index) { ifa = ifnet_addrs[sdl->sdl_index - 1]; if (ifa != NULL) IFA_ADDREF(ifa); ifnet_head_done(); return (ifa); } } /* * Scan though each interface, looking for ones that have * addresses in this address family. */ for (ifp = ifnet_head.tqh_first; ifp; ifp = ifp->if_link.tqe_next) { ifnet_lock_shared(ifp); for (ifa = ifp->if_addrhead.tqh_first; ifa; ifa = ifa->ifa_link.tqe_next) { const char *cp, *cp2, *cp3; IFA_LOCK(ifa); if (ifa->ifa_addr == NULL || ifa->ifa_addr->sa_family != af) { next: IFA_UNLOCK(ifa); continue; } /* * If we're looking up with a scope, * find using a matching interface. */ if (ifscope != IFSCOPE_NONE && ifp->if_index != ifscope) { IFA_UNLOCK(ifa); continue; } /* * Scan all the bits in the ifa's address. * If a bit dissagrees with what we are * looking for, mask it with the netmask * to see if it really matters. * (A byte at a time) */ if (ifa->ifa_netmask == 0) { IFA_UNLOCK(ifa); continue; } cp = addr_data; cp2 = ifa->ifa_addr->sa_data; cp3 = ifa->ifa_netmask->sa_data; cplim = ifa->ifa_netmask->sa_len + (char *)ifa->ifa_netmask; while (cp3 < cplim) if ((*cp++ ^ *cp2++) & *cp3++) goto next; /* next address! */ /* * If the netmask of what we just found * is more specific than what we had before * (if we had one) then remember the new one * before continuing to search * for an even better one. */ if (ifa_maybe == NULL || rn_refines((caddr_t)ifa->ifa_netmask, (caddr_t)ifa_maybe->ifa_netmask)) { IFA_ADDREF_LOCKED(ifa); /* ifa_maybe */ IFA_UNLOCK(ifa); if (ifa_maybe != NULL) IFA_REMREF(ifa_maybe); ifa_maybe = ifa; } else { IFA_UNLOCK(ifa); } IFA_LOCK_ASSERT_NOTHELD(ifa); } ifnet_lock_done(ifp); if (ifa != NULL) break; } ifnet_head_done(); if (ifa == NULL) ifa = ifa_maybe; else if (ifa_maybe != NULL) IFA_REMREF(ifa_maybe); return (ifa); } /* * Find an interface address specific to an interface best matching * a given address applying same source address selection rules * as done in the kernel for implicit source address binding */ struct ifaddr * ifaof_ifpforaddr_select(const struct sockaddr *addr, struct ifnet *ifp) { u_int af = addr->sa_family; if (af == AF_INET6) return (in6_selectsrc_core_ifa(__DECONST(struct sockaddr_in6 *, addr), ifp, 0)); return (ifaof_ifpforaddr(addr, ifp)); } /* * Find an interface address specific to an interface best matching * a given address without regards to source address selection. * * This is appropriate for use-cases where we just want to update/init * some data structure like routing table entries. */ struct ifaddr * ifaof_ifpforaddr(const struct sockaddr *addr, struct ifnet *ifp) { struct ifaddr *ifa = NULL; const char *cp, *cp2, *cp3; char *cplim; struct ifaddr *ifa_maybe = NULL; struct ifaddr *better_ifa_maybe = NULL; u_int af = addr->sa_family; if (af >= AF_MAX) return (NULL); ifnet_lock_shared(ifp); for (ifa = ifp->if_addrhead.tqh_first; ifa; ifa = ifa->ifa_link.tqe_next) { IFA_LOCK(ifa); if (ifa->ifa_addr->sa_family != af) { IFA_UNLOCK(ifa); continue; } if (ifa_maybe == NULL) { IFA_ADDREF_LOCKED(ifa); /* for ifa_maybe */ ifa_maybe = ifa; } if (ifa->ifa_netmask == 0) { if (ifa_equal(addr, ifa->ifa_addr) || ifa_equal(addr, ifa->ifa_dstaddr)) { IFA_ADDREF_LOCKED(ifa); /* for caller */ IFA_UNLOCK(ifa); break; } IFA_UNLOCK(ifa); continue; } if (ifp->if_flags & IFF_POINTOPOINT) { if (ifa_equal(addr, ifa->ifa_dstaddr)) { IFA_ADDREF_LOCKED(ifa); /* for caller */ IFA_UNLOCK(ifa); break; } } else { if (ifa_equal(addr, ifa->ifa_addr)) { /* exact match */ IFA_ADDREF_LOCKED(ifa); /* for caller */ IFA_UNLOCK(ifa); break; } cp = addr->sa_data; cp2 = ifa->ifa_addr->sa_data; cp3 = ifa->ifa_netmask->sa_data; cplim = ifa->ifa_netmask->sa_len + (char *)ifa->ifa_netmask; for (; cp3 < cplim; cp3++) if ((*cp++ ^ *cp2++) & *cp3) break; if (cp3 == cplim) { /* subnet match */ if (better_ifa_maybe == NULL) { /* for better_ifa_maybe */ IFA_ADDREF_LOCKED(ifa); better_ifa_maybe = ifa; } } } IFA_UNLOCK(ifa); } if (ifa == NULL) { if (better_ifa_maybe != NULL) { ifa = better_ifa_maybe; better_ifa_maybe = NULL; } else { ifa = ifa_maybe; ifa_maybe = NULL; } } ifnet_lock_done(ifp); if (better_ifa_maybe != NULL) IFA_REMREF(better_ifa_maybe); if (ifa_maybe != NULL) IFA_REMREF(ifa_maybe); return (ifa); } #include <net/route.h> /* * Default action when installing a route with a Link Level gateway. * Lookup an appropriate real ifa to point to. * This should be moved to /sys/net/link.c eventually. */ void link_rtrequest(int cmd, struct rtentry *rt, struct sockaddr *sa) { struct ifaddr *ifa; struct sockaddr *dst; struct ifnet *ifp; void (*ifa_rtrequest)(int, struct rtentry *, struct sockaddr *); LCK_MTX_ASSERT(rnh_lock, LCK_MTX_ASSERT_OWNED); RT_LOCK_ASSERT_HELD(rt); if (cmd != RTM_ADD || ((ifa = rt->rt_ifa) == 0) || ((ifp = ifa->ifa_ifp) == 0) || ((dst = rt_key(rt)) == 0)) return; /* Become a regular mutex, just in case */ RT_CONVERT_LOCK(rt); ifa = ifaof_ifpforaddr(dst, ifp); if (ifa) { rtsetifa(rt, ifa); IFA_LOCK_SPIN(ifa); ifa_rtrequest = ifa->ifa_rtrequest; IFA_UNLOCK(ifa); if (ifa_rtrequest != NULL && ifa_rtrequest != link_rtrequest) ifa_rtrequest(cmd, rt, sa); IFA_REMREF(ifa); } } /* * if_updown will set the interface up or down. It will * prevent other up/down events from occurring until this * up/down event has completed. * * Caller must lock ifnet. This function will drop the * lock. This allows ifnet_set_flags to set the rest of * the flags after we change the up/down state without * dropping the interface lock between setting the * up/down state and updating the rest of the flags. */ __private_extern__ void if_updown( struct ifnet *ifp, int up) { int i; struct ifaddr **ifa; struct timespec tv; struct ifclassq *ifq = &ifp->if_snd; /* Wait until no one else is changing the up/down state */ while ((ifp->if_eflags & IFEF_UPDOWNCHANGE) != 0) { tv.tv_sec = 0; tv.tv_nsec = NSEC_PER_SEC / 10; ifnet_lock_done(ifp); msleep(&ifp->if_eflags, NULL, 0, "if_updown", &tv); ifnet_lock_exclusive(ifp); } /* Verify that the interface isn't already in the right state */ if ((!up && (ifp->if_flags & IFF_UP) == 0) || (up && (ifp->if_flags & IFF_UP) == IFF_UP)) { return; } /* Indicate that the up/down state is changing */ ifp->if_eflags |= IFEF_UPDOWNCHANGE; /* Mark interface up or down */ if (up) { ifp->if_flags |= IFF_UP; } else { ifp->if_flags &= ~IFF_UP; } ifnet_touch_lastchange(ifp); ifnet_touch_lastupdown(ifp); /* Drop the lock to notify addresses and route */ ifnet_lock_done(ifp); IFCQ_LOCK(ifq); if_qflush(ifp, 1); /* Inform all transmit queues about the new link state */ ifnet_update_sndq(ifq, up ? CLASSQ_EV_LINK_UP : CLASSQ_EV_LINK_DOWN); IFCQ_UNLOCK(ifq); if (ifnet_get_address_list(ifp, &ifa) == 0) { for (i = 0; ifa[i] != 0; i++) { pfctlinput(up ? PRC_IFUP : PRC_IFDOWN, ifa[i]->ifa_addr); } ifnet_free_address_list(ifa); } rt_ifmsg(ifp); /* Aquire the lock to clear the changing flag */ ifnet_lock_exclusive(ifp); ifp->if_eflags &= ~IFEF_UPDOWNCHANGE; wakeup(&ifp->if_eflags); } /* * Mark an interface down and notify protocols of * the transition. */ void if_down( struct ifnet *ifp) { ifnet_lock_exclusive(ifp); if_updown(ifp, 0); ifnet_lock_done(ifp); } /* * Mark an interface up and notify protocols of * the transition. */ void if_up( struct ifnet *ifp) { ifnet_lock_exclusive(ifp); if_updown(ifp, 1); ifnet_lock_done(ifp); } /* * Flush an interface queue. */ void if_qflush(struct ifnet *ifp, int ifq_locked) { struct ifclassq *ifq = &ifp->if_snd; if (!ifq_locked) IFCQ_LOCK(ifq); if (IFCQ_IS_ENABLED(ifq)) IFCQ_PURGE(ifq); VERIFY(IFCQ_IS_EMPTY(ifq)); if (!ifq_locked) IFCQ_UNLOCK(ifq); } void if_qflush_sc(struct ifnet *ifp, mbuf_svc_class_t sc, u_int32_t flow, u_int32_t *packets, u_int32_t *bytes, int ifq_locked) { struct ifclassq *ifq = &ifp->if_snd; u_int32_t cnt = 0, len = 0; u_int32_t a_cnt = 0, a_len = 0; VERIFY(sc == MBUF_SC_UNSPEC || MBUF_VALID_SC(sc)); VERIFY(flow != 0); if (!ifq_locked) IFCQ_LOCK(ifq); if (IFCQ_IS_ENABLED(ifq)) IFCQ_PURGE_SC(ifq, sc, flow, cnt, len); if (!ifq_locked) IFCQ_UNLOCK(ifq); if (packets != NULL) *packets = cnt + a_cnt; if (bytes != NULL) *bytes = len + a_len; } /* * Extracts interface unit number and name from string, returns -1 upon failure. * Upon success, returns extracted unit number, and interface name in dst. */ int ifunit_extract(const char *src, char *dst, size_t dstlen, int *unit) { const char *cp; size_t len, m; char c; int u; if (src == NULL || dst == NULL || dstlen == 0 || unit == NULL) return (-1); len = strlen(src); if (len < 2 || len > dstlen) return (-1); cp = src + len - 1; c = *cp; if (c < '0' || c > '9') return (-1); /* trailing garbage */ u = 0; m = 1; do { if (cp == src) return (-1); /* no interface name */ u += (c - '0') * m; if (u > 1000000) return (-1); /* number is unreasonable */ m *= 10; c = *--cp; } while (c >= '0' && c <= '9'); len = cp - src + 1; bcopy(src, dst, len); dst[len] = '\0'; *unit = u; return (0); } /* * Map interface name to * interface structure pointer. */ static struct ifnet * ifunit_common(const char *name, boolean_t hold) { char namebuf[IFNAMSIZ + 1]; struct ifnet *ifp; int unit; if (ifunit_extract(name, namebuf, sizeof (namebuf), &unit) < 0) return (NULL); /* for safety, since we use strcmp() below */ namebuf[sizeof (namebuf) - 1] = '\0'; /* * Now search all the interfaces for this name/number */ ifnet_head_lock_shared(); TAILQ_FOREACH(ifp, &ifnet_head, if_link) { /* * Use strcmp() rather than strncmp() here, * since we want to match the entire string. */ if (strcmp(ifp->if_name, namebuf)) continue; if (unit == ifp->if_unit) break; } /* if called from ifunit_ref() and ifnet is not attached, bail */ if (hold && ifp != NULL && !ifnet_is_attached(ifp, 1)) ifp = NULL; ifnet_head_done(); return (ifp); } struct ifnet * ifunit(const char *name) { return (ifunit_common(name, FALSE)); } /* * Similar to ifunit(), except that we hold an I/O reference count on an * attached interface, which must later be released via ifnet_decr_iorefcnt(). * Will return NULL unless interface exists and is fully attached. */ struct ifnet * ifunit_ref(const char *name) { return (ifunit_common(name, TRUE)); } /* * Map interface name in a sockaddr_dl to * interface structure pointer. */ struct ifnet * if_withname(struct sockaddr *sa) { char ifname[IFNAMSIZ+1]; struct sockaddr_dl *sdl = (struct sockaddr_dl *)(void *)sa; if ((sa->sa_family != AF_LINK) || (sdl->sdl_nlen == 0) || (sdl->sdl_nlen > IFNAMSIZ)) return (NULL); /* * ifunit wants a null-terminated name. It may not be null-terminated * in the sockaddr. We don't want to change the caller's sockaddr, * and there might not be room to put the trailing null anyway, so we * make a local copy that we know we can null terminate safely. */ bcopy(sdl->sdl_data, ifname, sdl->sdl_nlen); ifname[sdl->sdl_nlen] = '\0'; return (ifunit(ifname)); } static __attribute__((noinline)) int ifioctl_ifconf(u_long cmd, caddr_t data) { int error = 0; switch (cmd) { case OSIOCGIFCONF32: /* struct ifconf32 */ case SIOCGIFCONF32: { /* struct ifconf32 */ struct ifconf32 ifc; bcopy(data, &ifc, sizeof (ifc)); error = ifconf(cmd, CAST_USER_ADDR_T(ifc.ifc_req), &ifc.ifc_len); bcopy(&ifc, data, sizeof (ifc)); break; } case SIOCGIFCONF64: /* struct ifconf64 */ case OSIOCGIFCONF64: { /* struct ifconf64 */ struct ifconf64 ifc; bcopy(data, &ifc, sizeof (ifc)); error = ifconf(cmd, ifc.ifc_req, &ifc.ifc_len); bcopy(&ifc, data, sizeof (ifc)); break; } default: VERIFY(0); /* NOTREACHED */ } return (error); } static __attribute__((noinline)) int ifioctl_ifclone(u_long cmd, caddr_t data) { int error = 0; switch (cmd) { case SIOCIFGCLONERS32: { /* struct if_clonereq32 */ struct if_clonereq32 ifcr; bcopy(data, &ifcr, sizeof (ifcr)); error = if_clone_list(ifcr.ifcr_count, &ifcr.ifcr_total, CAST_USER_ADDR_T(ifcr.ifcru_buffer)); bcopy(&ifcr, data, sizeof (ifcr)); break; } case SIOCIFGCLONERS64: { /* struct if_clonereq64 */ struct if_clonereq64 ifcr; bcopy(data, &ifcr, sizeof (ifcr)); error = if_clone_list(ifcr.ifcr_count, &ifcr.ifcr_total, ifcr.ifcru_buffer); bcopy(&ifcr, data, sizeof (ifcr)); break; } default: VERIFY(0); /* NOTREACHED */ } return (error); } static __attribute__((noinline)) int ifioctl_ifdesc(struct ifnet *ifp, u_long cmd, caddr_t data, struct proc *p) { struct if_descreq *ifdr = (struct if_descreq *)(void *)data; u_int32_t ifdr_len; int error = 0; VERIFY(ifp != NULL); switch (cmd) { case SIOCSIFDESC: { /* struct if_descreq */ if ((error = proc_suser(p)) != 0) break; ifnet_lock_exclusive(ifp); bcopy(&ifdr->ifdr_len, &ifdr_len, sizeof (ifdr_len)); if (ifdr_len > sizeof (ifdr->ifdr_desc) || ifdr_len > ifp->if_desc.ifd_maxlen) { error = EINVAL; ifnet_lock_done(ifp); break; } bzero(ifp->if_desc.ifd_desc, ifp->if_desc.ifd_maxlen); if ((ifp->if_desc.ifd_len = ifdr_len) > 0) { bcopy(ifdr->ifdr_desc, ifp->if_desc.ifd_desc, MIN(ifdr_len, ifp->if_desc.ifd_maxlen)); } ifnet_lock_done(ifp); break; } case SIOCGIFDESC: { /* struct if_descreq */ ifnet_lock_shared(ifp); ifdr_len = MIN(ifp->if_desc.ifd_len, sizeof (ifdr->ifdr_desc)); bcopy(&ifdr_len, &ifdr->ifdr_len, sizeof (ifdr_len)); bzero(&ifdr->ifdr_desc, sizeof (ifdr->ifdr_desc)); if (ifdr_len > 0) { bcopy(ifp->if_desc.ifd_desc, ifdr->ifdr_desc, ifdr_len); } ifnet_lock_done(ifp); break; } default: VERIFY(0); /* NOTREACHED */ } return (error); } static __attribute__((noinline)) int ifioctl_linkparams(struct ifnet *ifp, u_long cmd, caddr_t data, struct proc *p) { struct if_linkparamsreq *iflpr = (struct if_linkparamsreq *)(void *)data; struct ifclassq *ifq; int error = 0; VERIFY(ifp != NULL); ifq = &ifp->if_snd; switch (cmd) { case SIOCSIFLINKPARAMS: { /* struct if_linkparamsreq */ struct tb_profile tb = { 0, 0, 0 }; if ((error = proc_suser(p)) != 0) break; IFCQ_LOCK(ifq); if (!IFCQ_IS_READY(ifq)) { error = ENXIO; IFCQ_UNLOCK(ifq); break; } bcopy(&iflpr->iflpr_output_tbr_rate, &tb.rate, sizeof (tb.rate)); bcopy(&iflpr->iflpr_output_tbr_percent, &tb.percent, sizeof (tb.percent)); error = ifclassq_tbr_set(ifq, &tb, TRUE); IFCQ_UNLOCK(ifq); break; } case SIOCGIFLINKPARAMS: { /* struct if_linkparamsreq */ u_int32_t sched_type = PKTSCHEDT_NONE, flags = 0; u_int64_t tbr_bw = 0, tbr_pct = 0; IFCQ_LOCK(ifq); if (IFCQ_IS_ENABLED(ifq)) sched_type = ifq->ifcq_type; bcopy(&sched_type, &iflpr->iflpr_output_sched, sizeof (iflpr->iflpr_output_sched)); if (IFCQ_TBR_IS_ENABLED(ifq)) { tbr_bw = ifq->ifcq_tbr.tbr_rate_raw; tbr_pct = ifq->ifcq_tbr.tbr_percent; } bcopy(&tbr_bw, &iflpr->iflpr_output_tbr_rate, sizeof (iflpr->iflpr_output_tbr_rate)); bcopy(&tbr_pct, &iflpr->iflpr_output_tbr_percent, sizeof (iflpr->iflpr_output_tbr_percent)); IFCQ_UNLOCK(ifq); if (ifp->if_output_sched_model == IFNET_SCHED_MODEL_DRIVER_MANAGED) flags |= IFLPRF_DRVMANAGED; bcopy(&flags, &iflpr->iflpr_flags, sizeof (iflpr->iflpr_flags)); bcopy(&ifp->if_output_bw, &iflpr->iflpr_output_bw, sizeof (iflpr->iflpr_output_bw)); bcopy(&ifp->if_input_bw, &iflpr->iflpr_input_bw, sizeof (iflpr->iflpr_input_bw)); bcopy(&ifp->if_output_lt, &iflpr->iflpr_output_lt, sizeof (iflpr->iflpr_output_lt)); bcopy(&ifp->if_input_lt, &iflpr->iflpr_input_lt, sizeof (iflpr->iflpr_input_lt)); break; } default: VERIFY(0); /* NOTREACHED */ } return (error); } static __attribute__((noinline)) int ifioctl_qstats(struct ifnet *ifp, u_long cmd, caddr_t data) { struct if_qstatsreq *ifqr = (struct if_qstatsreq *)(void *)data; u_int32_t ifqr_len, ifqr_slot; int error = 0; VERIFY(ifp != NULL); switch (cmd) { case SIOCGIFQUEUESTATS: { /* struct if_qstatsreq */ bcopy(&ifqr->ifqr_slot, &ifqr_slot, sizeof (ifqr_slot)); bcopy(&ifqr->ifqr_len, &ifqr_len, sizeof (ifqr_len)); error = ifclassq_getqstats(&ifp->if_snd, ifqr_slot, ifqr->ifqr_buf, &ifqr_len); if (error != 0) ifqr_len = 0; bcopy(&ifqr_len, &ifqr->ifqr_len, sizeof (ifqr_len)); break; } default: VERIFY(0); /* NOTREACHED */ } return (error); } static __attribute__((noinline)) int ifioctl_throttle(struct ifnet *ifp, u_long cmd, caddr_t data, struct proc *p) { struct if_throttlereq *ifthr = (struct if_throttlereq *)(void *)data; u_int32_t ifthr_level; int error = 0; VERIFY(ifp != NULL); switch (cmd) { case SIOCSIFTHROTTLE: { /* struct if_throttlereq */ /* * XXX: Use priv_check_cred() instead of root check? */ if ((error = proc_suser(p)) != 0) break; bcopy(&ifthr->ifthr_level, &ifthr_level, sizeof (ifthr_level)); error = ifnet_set_throttle(ifp, ifthr_level); if (error == EALREADY) error = 0; break; } case SIOCGIFTHROTTLE: { /* struct if_throttlereq */ if ((error = ifnet_get_throttle(ifp, &ifthr_level)) == 0) { bcopy(&ifthr_level, &ifthr->ifthr_level, sizeof (ifthr_level)); } break; } default: VERIFY(0); /* NOTREACHED */ } return (error); } static int ifioctl_getnetagents(struct ifnet *ifp, u_int32_t *count, user_addr_t uuid_p) { int error = 0; u_int32_t index = 0; u_int32_t valid_netagent_count = 0; *count = 0; ifnet_lock_assert(ifp, IFNET_LCK_ASSERT_SHARED); if (ifp->if_agentids != NULL) { for (index = 0; index < ifp->if_agentcount; index++) { uuid_t *netagent_uuid = &(ifp->if_agentids[index]); if (!uuid_is_null(*netagent_uuid)) { if (uuid_p != USER_ADDR_NULL) { error = copyout(netagent_uuid, uuid_p + sizeof(uuid_t) * valid_netagent_count, sizeof(uuid_t)); if (error != 0) { return (error); } } valid_netagent_count++; } } } *count = valid_netagent_count; return (0); } #define IF_MAXAGENTS 64 #define IF_AGENT_INCREMENT 8 static int if_add_netagent_locked(struct ifnet *ifp, uuid_t new_agent_uuid) { uuid_t *first_empty_slot = NULL; u_int32_t index = 0; bool already_added = FALSE; if (ifp->if_agentids != NULL) { for (index = 0; index < ifp->if_agentcount; index++) { uuid_t *netagent_uuid = &(ifp->if_agentids[index]); if (uuid_compare(*netagent_uuid, new_agent_uuid) == 0) { /* Already present, ignore */ already_added = TRUE; break; } if (first_empty_slot == NULL && uuid_is_null(*netagent_uuid)) { first_empty_slot = netagent_uuid; } } } if (already_added) { /* Already added agent, don't return an error */ return (0); } if (first_empty_slot == NULL) { if (ifp->if_agentcount >= IF_MAXAGENTS) { /* No room for another netagent UUID, bail */ return (ENOMEM); } else { /* Calculate new array size */ u_int32_t new_agent_count = MIN(ifp->if_agentcount + IF_AGENT_INCREMENT, IF_MAXAGENTS); /* Reallocate array */ uuid_t *new_agent_array = _REALLOC(ifp->if_agentids, sizeof(uuid_t) * new_agent_count, M_NETAGENT, M_WAITOK | M_ZERO); if (new_agent_array == NULL) { return (ENOMEM); } /* Save new array */ ifp->if_agentids = new_agent_array; /* Set first empty slot */ first_empty_slot = &(ifp->if_agentids[ifp->if_agentcount]); /* Save new array length */ ifp->if_agentcount = new_agent_count; } } uuid_copy(*first_empty_slot, new_agent_uuid); netagent_post_updated_interfaces(new_agent_uuid); return (0); } int if_add_netagent(struct ifnet *ifp, uuid_t new_agent_uuid) { VERIFY(ifp != NULL); ifnet_lock_exclusive(ifp); int error = if_add_netagent_locked(ifp, new_agent_uuid); ifnet_lock_done(ifp); return (error); } static int if_delete_netagent_locked(struct ifnet *ifp, uuid_t remove_agent_uuid) { u_int32_t index = 0; bool removed_agent_id = FALSE; if (ifp->if_agentids != NULL) { for (index = 0; index < ifp->if_agentcount; index++) { uuid_t *netagent_uuid = &(ifp->if_agentids[index]); if (uuid_compare(*netagent_uuid, remove_agent_uuid) == 0) { uuid_clear(*netagent_uuid); removed_agent_id = TRUE; break; } } } if (removed_agent_id) netagent_post_updated_interfaces(remove_agent_uuid); return (0); } int if_delete_netagent(struct ifnet *ifp, uuid_t remove_agent_uuid) { VERIFY(ifp != NULL); ifnet_lock_exclusive(ifp); int error = if_delete_netagent_locked(ifp, remove_agent_uuid); ifnet_lock_done(ifp); return (error); } boolean_t if_check_netagent(struct ifnet *ifp, uuid_t find_agent_uuid) { boolean_t found = FALSE; if (!ifp || uuid_is_null(find_agent_uuid)) return FALSE; ifnet_lock_shared(ifp); if (ifp->if_agentids != NULL) { for (uint32_t index = 0; index < ifp->if_agentcount; index++) { if (uuid_compare(ifp->if_agentids[index], find_agent_uuid) == 0) { found = TRUE; break; } } } ifnet_lock_done(ifp); return found; } static __attribute__((noinline)) int ifioctl_netagent(struct ifnet *ifp, u_long cmd, caddr_t data, struct proc *p) { struct if_agentidreq *ifar = (struct if_agentidreq *)(void *)data; union { struct if_agentidsreq32 s32; struct if_agentidsreq64 s64; } u; int error = 0; VERIFY(ifp != NULL); /* Get an io ref count if the interface is attached */ if (!ifnet_is_attached(ifp, 1)) { return (EOPNOTSUPP); } if (cmd == SIOCAIFAGENTID || cmd == SIOCDIFAGENTID) { ifnet_lock_exclusive(ifp); } else { ifnet_lock_shared(ifp); } switch (cmd) { case SIOCAIFAGENTID: { /* struct if_agentidreq */ // TODO: Use priv_check_cred() instead of root check if ((error = proc_suser(p)) != 0) { break; } error = if_add_netagent_locked(ifp, ifar->ifar_uuid); break; } case SIOCDIFAGENTID: { /* struct if_agentidreq */ // TODO: Use priv_check_cred() instead of root check if ((error = proc_suser(p)) != 0) { break; } error = if_delete_netagent_locked(ifp, ifar->ifar_uuid); break; } case SIOCGIFAGENTIDS32: { /* struct if_agentidsreq32 */ bcopy(data, &u.s32, sizeof(u.s32)); error = ifioctl_getnetagents(ifp, &u.s32.ifar_count, u.s32.ifar_uuids); if (error == 0) { bcopy(&u.s32, data, sizeof(u.s32)); } break; } case SIOCGIFAGENTIDS64: { /* struct if_agentidsreq64 */ bcopy(data, &u.s64, sizeof(u.s64)); error = ifioctl_getnetagents(ifp, &u.s64.ifar_count, u.s64.ifar_uuids); if (error == 0) { bcopy(&u.s64, data, sizeof(u.s64)); } break; } default: VERIFY(0); /* NOTREACHED */ } ifnet_lock_done(ifp); ifnet_decr_iorefcnt(ifp); return (error); } void ifnet_clear_netagent(uuid_t netagent_uuid) { struct ifnet *ifp = NULL; u_int32_t index = 0; ifnet_head_lock_shared(); TAILQ_FOREACH(ifp, &ifnet_head, if_link) { ifnet_lock_shared(ifp); if (ifp->if_agentids != NULL) { for (index = 0; index < ifp->if_agentcount; index++) { uuid_t *ifp_netagent_uuid = &(ifp->if_agentids[index]); if (uuid_compare(*ifp_netagent_uuid, netagent_uuid) == 0) { uuid_clear(*ifp_netagent_uuid); } } } ifnet_lock_done(ifp); } ifnet_head_done(); } void ifnet_increment_generation(ifnet_t interface) { OSIncrementAtomic(&interface->if_generation); } u_int32_t ifnet_get_generation(ifnet_t interface) { return (interface->if_generation); } void ifnet_remove_from_ordered_list(struct ifnet *ifp) { ifnet_head_assert_exclusive(); // Remove from list TAILQ_REMOVE(&ifnet_ordered_head, ifp, if_ordered_link); ifp->if_ordered_link.tqe_next = NULL; ifp->if_ordered_link.tqe_prev = NULL; // Update ordered count VERIFY(if_ordered_count > 0); if_ordered_count--; } static int ifnet_reset_order(u_int32_t *ordered_indices, u_int32_t count) { struct ifnet *ifp = NULL; int error = 0; ifnet_head_lock_exclusive(); for (u_int32_t order_index = 0; order_index < count; order_index++) { if (ordered_indices[order_index] == IFSCOPE_NONE || ordered_indices[order_index] > (uint32_t)if_index) { error = EINVAL; ifnet_head_done(); return (error); } } // Flush current ordered list for (ifp = TAILQ_FIRST(&ifnet_ordered_head); ifp != NULL; ifp = TAILQ_FIRST(&ifnet_ordered_head)) { ifnet_lock_exclusive(ifp); ifnet_remove_from_ordered_list(ifp); ifnet_lock_done(ifp); } VERIFY(if_ordered_count == 0); for (u_int32_t order_index = 0; order_index < count; order_index++) { u_int32_t interface_index = ordered_indices[order_index]; ifp = ifindex2ifnet[interface_index]; if (ifp == NULL) { continue; } ifnet_lock_exclusive(ifp); TAILQ_INSERT_TAIL(&ifnet_ordered_head, ifp, if_ordered_link); ifnet_lock_done(ifp); if_ordered_count++; } ifnet_head_done(); necp_update_all_clients(); return (error); } int if_set_qosmarking_mode(struct ifnet *ifp, u_int32_t mode) { int error = 0; u_int32_t old_mode = ifp->if_qosmarking_mode; switch (mode) { case IFRTYPE_QOSMARKING_MODE_NONE: ifp->if_qosmarking_mode = IFRTYPE_QOSMARKING_MODE_NONE; ifp->if_eflags &= ~IFEF_QOSMARKING_CAPABLE; break; case IFRTYPE_QOSMARKING_FASTLANE: ifp->if_qosmarking_mode = IFRTYPE_QOSMARKING_FASTLANE; ifp->if_eflags |= IFEF_QOSMARKING_CAPABLE; if (net_qos_policy_capable_enabled != 0) ifp->if_eflags |= IFEF_QOSMARKING_ENABLED; break; default: error = EINVAL; break; } if (error == 0 && old_mode != ifp->if_qosmarking_mode) { dlil_post_msg(ifp, KEV_DL_SUBCLASS, KEV_DL_QOS_MODE_CHANGED, NULL, sizeof(struct kev_dl_rrc_state)); } return (error); } static __attribute__((noinline)) int ifioctl_iforder(u_long cmd, caddr_t data) { int error = 0; u_int32_t *ordered_indices = NULL; if (data == NULL) { return (EINVAL); } switch (cmd) { case SIOCSIFORDER: { /* struct if_order */ struct if_order *ifo = (struct if_order *)(void *)data; if (ifo->ifo_count > (u_int32_t)if_index) { error = EINVAL; break; } size_t length = (ifo->ifo_count * sizeof(u_int32_t)); if (length > 0) { if (ifo->ifo_ordered_indices == USER_ADDR_NULL) { error = EINVAL; break; } ordered_indices = _MALLOC(length, M_NECP, M_WAITOK); if (ordered_indices == NULL) { error = ENOMEM; break; } error = copyin(ifo->ifo_ordered_indices, ordered_indices, length); if (error != 0) { break; } /* ordered_indices should not contain duplicates */ bool found_duplicate = FALSE; for (uint32_t i = 0; i < (ifo->ifo_count - 1) && !found_duplicate ; i++){ for (uint32_t j = i + 1; j < ifo->ifo_count && !found_duplicate ; j++){ if (ordered_indices[j] == ordered_indices[i]){ error = EINVAL; found_duplicate = TRUE; break; } } } if (found_duplicate) { break; } } error = ifnet_reset_order(ordered_indices, ifo->ifo_count); break; } case SIOCGIFORDER: { /* struct if_order */ struct if_order *ifo = (struct if_order *)(void *)data; u_int32_t ordered_count = *((volatile u_int32_t *)&if_ordered_count); if (ifo->ifo_count == 0 || ordered_count == 0) { ifo->ifo_count = 0; } else if (ifo->ifo_ordered_indices != USER_ADDR_NULL) { u_int32_t count_to_copy = MIN(ordered_count, ifo->ifo_count); size_t length = (count_to_copy * sizeof(u_int32_t)); struct ifnet *ifp = NULL; u_int32_t cursor = 0; ordered_indices = _MALLOC(length, M_NECP, M_WAITOK | M_ZERO); if (ordered_indices == NULL) { error = ENOMEM; break; } ifnet_head_lock_shared(); TAILQ_FOREACH(ifp, &ifnet_ordered_head, if_ordered_link) { if (cursor >= count_to_copy || cursor >= if_ordered_count) { break; } ordered_indices[cursor] = ifp->if_index; cursor++; } ifnet_head_done(); /* We might have parsed less than the original length * because the list could have changed. */ length = cursor * sizeof(u_int32_t); ifo->ifo_count = cursor; error = copyout(ordered_indices, ifo->ifo_ordered_indices, length); } else { error = EINVAL; } break; } default: { VERIFY(0); /* NOTREACHED */ } } if (ordered_indices != NULL) { _FREE(ordered_indices, M_NECP); } return (error); } static __attribute__((noinline)) int ifioctl_netsignature(struct ifnet *ifp, u_long cmd, caddr_t data) { struct if_nsreq *ifnsr = (struct if_nsreq *)(void *)data; u_int16_t flags; int error = 0; VERIFY(ifp != NULL); switch (cmd) { case SIOCSIFNETSIGNATURE: /* struct if_nsreq */ if (ifnsr->ifnsr_len > sizeof (ifnsr->ifnsr_data)) { error = EINVAL; break; } bcopy(&ifnsr->ifnsr_flags, &flags, sizeof (flags)); error = ifnet_set_netsignature(ifp, ifnsr->ifnsr_family, ifnsr->ifnsr_len, flags, ifnsr->ifnsr_data); break; case SIOCGIFNETSIGNATURE: /* struct if_nsreq */ ifnsr->ifnsr_len = sizeof (ifnsr->ifnsr_data); error = ifnet_get_netsignature(ifp, ifnsr->ifnsr_family, &ifnsr->ifnsr_len, &flags, ifnsr->ifnsr_data); if (error == 0) bcopy(&flags, &ifnsr->ifnsr_flags, sizeof (flags)); else ifnsr->ifnsr_len = 0; break; default: VERIFY(0); /* NOTREACHED */ } return (error); } #if INET6 static __attribute__((noinline)) int ifioctl_nat64prefix(struct ifnet *ifp, u_long cmd, caddr_t data) { struct if_nat64req *ifnat64 = (struct if_nat64req *)(void *)data; int error = 0; VERIFY(ifp != NULL); switch (cmd) { case SIOCSIFNAT64PREFIX: /* struct if_nat64req */ error = ifnet_set_nat64prefix(ifp, ifnat64->ifnat64_prefixes); break; case SIOCGIFNAT64PREFIX: /* struct if_nat64req */ error = ifnet_get_nat64prefix(ifp, ifnat64->ifnat64_prefixes); break; default: VERIFY(0); /* NOTREACHED */ } return (error); } #endif static int ifioctl_get_protolist(struct ifnet *ifp, u_int32_t * ret_count, user_addr_t ifpl) { u_int32_t actual_count; u_int32_t count; int error = 0; u_int32_t *list = NULL; /* find out how many */ count = if_get_protolist(ifp, NULL, 0); if (ifpl == USER_ADDR_NULL) { goto done; } /* copy out how many there's space for */ if (*ret_count < count) { count = *ret_count; } if (count == 0) { goto done; } list = _MALLOC(count * sizeof(*list), M_TEMP, M_WAITOK); if (list == NULL) { error = ENOMEM; goto done; } actual_count = if_get_protolist(ifp, list, count); if (actual_count < count) { count = actual_count; } if (count != 0) { error = copyout((caddr_t)list, ifpl, count * sizeof(*list)); } done: if (list != NULL) { if_free_protolist(list); } *ret_count = count; return (error); } static __attribute__((noinline)) int ifioctl_protolist(struct ifnet *ifp, u_long cmd, caddr_t data) { int error = 0; switch (cmd) { case SIOCGIFPROTOLIST32: { /* struct if_protolistreq32 */ struct if_protolistreq32 ifpl; bcopy(data, &ifpl, sizeof(ifpl)); if (ifpl.ifpl_reserved != 0) { error = EINVAL; break; } error = ifioctl_get_protolist(ifp, &ifpl.ifpl_count, CAST_USER_ADDR_T(ifpl.ifpl_list)); bcopy(&ifpl, data, sizeof(ifpl)); break; } case SIOCGIFPROTOLIST64: { /* struct if_protolistreq64 */ struct if_protolistreq64 ifpl; bcopy(data, &ifpl, sizeof(ifpl)); if (ifpl.ifpl_reserved != 0) { error = EINVAL; break; } error = ifioctl_get_protolist(ifp, &ifpl.ifpl_count, ifpl.ifpl_list); bcopy(&ifpl, data, sizeof(ifpl)); break; } default: VERIFY(0); /* NOTREACHED */ } return (error); } /* * List the ioctl()s we can perform on restricted INTCOPROC interfaces. */ static bool ifioctl_restrict_intcoproc(unsigned long cmd, const char *ifname, struct ifnet *ifp, struct proc *p) { if (intcoproc_unrestricted == TRUE) { return (false); } if (proc_pid(p) == 0) { return (false); } if (ifname) { ifp = ifunit(ifname); } if (ifp == NULL) { return (false); } if (!IFNET_IS_INTCOPROC(ifp)) { return (false); } switch (cmd) { case SIOCGIFBRDADDR: case SIOCGIFCONF32: case SIOCGIFCONF64: case SIOCGIFFLAGS: case SIOCGIFEFLAGS: case SIOCGIFCAP: case SIOCGIFMAC: case SIOCGIFMETRIC: case SIOCGIFMTU: case SIOCGIFPHYS: case SIOCGIFTYPE: case SIOCGIFFUNCTIONALTYPE: case SIOCGIFPSRCADDR: case SIOCGIFPDSTADDR: case SIOCGIFGENERIC: case SIOCGIFDEVMTU: case SIOCGIFVLAN: case SIOCGIFBOND: case SIOCGIFWAKEFLAGS: case SIOCGIFGETRTREFCNT: case SIOCGIFOPPORTUNISTIC: case SIOCGIFLINKQUALITYMETRIC: case SIOCGIFLOG: case SIOCGIFDELEGATE: case SIOCGIFEXPENSIVE: case SIOCGIFINTERFACESTATE: case SIOCGIFPROBECONNECTIVITY: case SIOCGIFTIMESTAMPENABLED: case SIOCGECNMODE: case SIOCGQOSMARKINGMODE: case SIOCGQOSMARKINGENABLED: case SIOCGIFLOWINTERNET: case SIOCGIFSTATUS: case SIOCGIFMEDIA32: case SIOCGIFMEDIA64: case SIOCGIFDESC: case SIOCGIFLINKPARAMS: case SIOCGIFQUEUESTATS: case SIOCGIFTHROTTLE: case SIOCGIFAGENTIDS32: case SIOCGIFAGENTIDS64: case SIOCGIFNETSIGNATURE: case SIOCGIFINFO_IN6: case SIOCGIFAFLAG_IN6: case SIOCGNBRINFO_IN6: case SIOCGIFALIFETIME_IN6: case SIOCGIFNETMASK_IN6: case SIOCGIFPROTOLIST32: case SIOCGIFPROTOLIST64: return (false); default: #if (DEBUG || DEVELOPMENT) printf("%s: cmd 0x%lx not allowed (pid %u)\n", __func__, cmd, proc_pid(p)); #endif return (true); } return (false); } /* * Interface ioctls. * * Most of the routines called to handle the ioctls would end up being * tail-call optimized, which unfortunately causes this routine to * consume too much stack space; this is the reason for the "noinline" * attribute used on those routines. */ int ifioctl(struct socket *so, u_long cmd, caddr_t data, struct proc *p) { char ifname[IFNAMSIZ + 1]; struct ifnet *ifp = NULL; struct ifstat *ifs = NULL; int error = 0; bzero(ifname, sizeof (ifname)); /* * ioctls which don't require ifp, or ifreq ioctls */ switch (cmd) { case OSIOCGIFCONF32: /* struct ifconf32 */ case SIOCGIFCONF32: /* struct ifconf32 */ case SIOCGIFCONF64: /* struct ifconf64 */ case OSIOCGIFCONF64: /* struct ifconf64 */ error = ifioctl_ifconf(cmd, data); goto done; case SIOCIFGCLONERS32: /* struct if_clonereq32 */ case SIOCIFGCLONERS64: /* struct if_clonereq64 */ error = ifioctl_ifclone(cmd, data); goto done; case SIOCGIFAGENTDATA32: /* struct netagent_req32 */ case SIOCGIFAGENTDATA64: /* struct netagent_req64 */ case SIOCGIFAGENTLIST32: /* struct netagentlist_req32 */ case SIOCGIFAGENTLIST64: /* struct netagentlist_req64 */ error = netagent_ioctl(cmd, data); goto done; case SIOCSIFORDER: /* struct if_order */ case SIOCGIFORDER: /* struct if_order */ error = ifioctl_iforder(cmd, data); goto done; case SIOCSIFDSTADDR: /* struct ifreq */ case SIOCSIFADDR: /* struct ifreq */ case SIOCSIFBRDADDR: /* struct ifreq */ case SIOCSIFNETMASK: /* struct ifreq */ case OSIOCGIFADDR: /* struct ifreq */ case OSIOCGIFDSTADDR: /* struct ifreq */ case OSIOCGIFBRDADDR: /* struct ifreq */ case OSIOCGIFNETMASK: /* struct ifreq */ case SIOCSIFKPI: /* struct ifreq */ if (so->so_proto == NULL) { error = EOPNOTSUPP; goto done; } /* FALLTHRU */ case SIOCIFCREATE: /* struct ifreq */ case SIOCIFCREATE2: /* struct ifreq */ case SIOCIFDESTROY: /* struct ifreq */ case SIOCGIFFLAGS: /* struct ifreq */ case SIOCGIFEFLAGS: /* struct ifreq */ case SIOCGIFCAP: /* struct ifreq */ #if CONFIG_MACF_NET case SIOCGIFMAC: /* struct ifreq */ case SIOCSIFMAC: /* struct ifreq */ #endif /* CONFIG_MACF_NET */ case SIOCGIFMETRIC: /* struct ifreq */ case SIOCGIFMTU: /* struct ifreq */ case SIOCGIFPHYS: /* struct ifreq */ case SIOCSIFFLAGS: /* struct ifreq */ case SIOCSIFCAP: /* struct ifreq */ case SIOCSIFMETRIC: /* struct ifreq */ case SIOCSIFPHYS: /* struct ifreq */ case SIOCSIFMTU: /* struct ifreq */ case SIOCADDMULTI: /* struct ifreq */ case SIOCDELMULTI: /* struct ifreq */ case SIOCDIFPHYADDR: /* struct ifreq */ case SIOCSIFMEDIA: /* struct ifreq */ case SIOCSIFGENERIC: /* struct ifreq */ case SIOCSIFLLADDR: /* struct ifreq */ case SIOCSIFALTMTU: /* struct ifreq */ case SIOCSIFVLAN: /* struct ifreq */ case SIOCSIFBOND: /* struct ifreq */ case SIOCGIFLLADDR: /* struct ifreq */ case SIOCGIFTYPE: /* struct ifreq */ case SIOCGIFFUNCTIONALTYPE: /* struct ifreq */ case SIOCGIFPSRCADDR: /* struct ifreq */ case SIOCGIFPDSTADDR: /* struct ifreq */ case SIOCGIFGENERIC: /* struct ifreq */ case SIOCGIFDEVMTU: /* struct ifreq */ case SIOCGIFVLAN: /* struct ifreq */ case SIOCGIFBOND: /* struct ifreq */ case SIOCGIFWAKEFLAGS: /* struct ifreq */ case SIOCGIFGETRTREFCNT: /* struct ifreq */ case SIOCSIFOPPORTUNISTIC: /* struct ifreq */ case SIOCGIFOPPORTUNISTIC: /* struct ifreq */ case SIOCGIFLINKQUALITYMETRIC: /* struct ifreq */ case SIOCSIFLOG: /* struct ifreq */ case SIOCGIFLOG: /* struct ifreq */ case SIOCGIFDELEGATE: /* struct ifreq */ case SIOCGIFEXPENSIVE: /* struct ifreq */ case SIOCSIFEXPENSIVE: /* struct ifreq */ case SIOCSIF2KCL: /* struct ifreq */ case SIOCGIF2KCL: /* struct ifreq */ case SIOCSIFINTERFACESTATE: /* struct ifreq */ case SIOCGIFINTERFACESTATE: /* struct ifreq */ case SIOCSIFPROBECONNECTIVITY: /* struct ifreq */ case SIOCGIFPROBECONNECTIVITY: /* struct ifreq */ case SIOCGSTARTDELAY: /* struct ifreq */ case SIOCSIFTIMESTAMPENABLE: /* struct ifreq */ case SIOCSIFTIMESTAMPDISABLE: /* struct ifreq */ case SIOCGIFTIMESTAMPENABLED: /* struct ifreq */ #if (DEBUG || DEVELOPMENT) case SIOCSIFDISABLEOUTPUT: /* struct ifreq */ #endif /* (DEBUG || DEVELOPMENT) */ case SIOCGECNMODE: /* struct ifreq */ case SIOCSECNMODE: case SIOCSQOSMARKINGMODE: /* struct ifreq */ case SIOCSQOSMARKINGENABLED: /* struct ifreq */ case SIOCGQOSMARKINGMODE: /* struct ifreq */ case SIOCGQOSMARKINGENABLED: /* struct ifreq */ case SIOCSIFLOWINTERNET: /* struct ifreq */ case SIOCGIFLOWINTERNET: /* struct ifreq */ { /* struct ifreq */ struct ifreq ifr; bcopy(data, &ifr, sizeof (ifr)); ifr.ifr_name[IFNAMSIZ - 1] = '\0'; bcopy(&ifr.ifr_name, ifname, IFNAMSIZ); if (ifioctl_restrict_intcoproc(cmd, ifname, NULL, p) == true) { error = EPERM; goto done; } error = ifioctl_ifreq(so, cmd, &ifr, p); bcopy(&ifr, data, sizeof (ifr)); goto done; } } /* * ioctls which require ifp. Note that we acquire dlil_ifnet_lock * here to ensure that the ifnet, if found, has been fully attached. */ dlil_if_lock(); switch (cmd) { case SIOCSIFPHYADDR: /* struct {if,in_}aliasreq */ bcopy(((struct in_aliasreq *)(void *)data)->ifra_name, ifname, IFNAMSIZ); ifp = ifunit(ifname); break; #if INET6 case SIOCSIFPHYADDR_IN6_32: /* struct in6_aliasreq_32 */ bcopy(((struct in6_aliasreq_32 *)(void *)data)->ifra_name, ifname, IFNAMSIZ); ifp = ifunit(ifname); break; case SIOCSIFPHYADDR_IN6_64: /* struct in6_aliasreq_64 */ bcopy(((struct in6_aliasreq_64 *)(void *)data)->ifra_name, ifname, IFNAMSIZ); ifp = ifunit(ifname); break; #endif /* INET6 */ case SIOCGIFSTATUS: /* struct ifstat */ ifs = _MALLOC(sizeof (*ifs), M_DEVBUF, M_WAITOK); if (ifs == NULL) { error = ENOMEM; dlil_if_unlock(); goto done; } bcopy(data, ifs, sizeof (*ifs)); ifs->ifs_name[IFNAMSIZ - 1] = '\0'; bcopy(ifs->ifs_name, ifname, IFNAMSIZ); ifp = ifunit(ifname); break; case SIOCGIFMEDIA32: /* struct ifmediareq32 */ bcopy(((struct ifmediareq32 *)(void *)data)->ifm_name, ifname, IFNAMSIZ); ifp = ifunit(ifname); break; case SIOCGIFMEDIA64: /* struct ifmediareq64 */ bcopy(((struct ifmediareq64 *)(void *)data)->ifm_name, ifname, IFNAMSIZ); ifp = ifunit(ifname); break; case SIOCSIFDESC: /* struct if_descreq */ case SIOCGIFDESC: /* struct if_descreq */ bcopy(((struct if_descreq *)(void *)data)->ifdr_name, ifname, IFNAMSIZ); ifp = ifunit(ifname); break; case SIOCSIFLINKPARAMS: /* struct if_linkparamsreq */ case SIOCGIFLINKPARAMS: /* struct if_linkparamsreq */ bcopy(((struct if_linkparamsreq *)(void *)data)->iflpr_name, ifname, IFNAMSIZ); ifp = ifunit(ifname); break; case SIOCGIFQUEUESTATS: /* struct if_qstatsreq */ bcopy(((struct if_qstatsreq *)(void *)data)->ifqr_name, ifname, IFNAMSIZ); ifp = ifunit(ifname); break; case SIOCSIFTHROTTLE: /* struct if_throttlereq */ case SIOCGIFTHROTTLE: /* struct if_throttlereq */ bcopy(((struct if_throttlereq *)(void *)data)->ifthr_name, ifname, IFNAMSIZ); ifp = ifunit(ifname); break; case SIOCAIFAGENTID: /* struct if_agentidreq */ case SIOCDIFAGENTID: /* struct if_agentidreq */ case SIOCGIFAGENTIDS32: /* struct if_agentidsreq32 */ case SIOCGIFAGENTIDS64: /* struct if_agentidsreq64 */ bcopy(((struct if_agentidreq *)(void *)data)->ifar_name, ifname, IFNAMSIZ); ifp = ifunit(ifname); break; case SIOCSIFNETSIGNATURE: /* struct if_nsreq */ case SIOCGIFNETSIGNATURE: /* struct if_nsreq */ bcopy(((struct if_nsreq *)(void *)data)->ifnsr_name, ifname, IFNAMSIZ); ifp = ifunit(ifname); break; case SIOCGIFPROTOLIST32: /* struct if_protolistreq32 */ case SIOCGIFPROTOLIST64: /* struct if_protolistreq64 */ bcopy(((struct if_protolistreq *)(void *)data)->ifpl_name, ifname, IFNAMSIZ); ifp = ifunit(ifname); break; default: /* * This is a bad assumption, but the code seems to * have been doing this in the past; caveat emptor. */ bcopy(((struct ifreq *)(void *)data)->ifr_name, ifname, IFNAMSIZ); ifp = ifunit(ifname); break; } dlil_if_unlock(); if (ifp == NULL) { error = ENXIO; goto done; } if (ifioctl_restrict_intcoproc(cmd, NULL, ifp, p) == true) { error = EPERM; goto done; } switch (cmd) { case SIOCSIFPHYADDR: /* struct {if,in_}aliasreq */ #if INET6 case SIOCSIFPHYADDR_IN6_32: /* struct in6_aliasreq_32 */ case SIOCSIFPHYADDR_IN6_64: /* struct in6_aliasreq_64 */ #endif /* INET6 */ error = proc_suser(p); if (error != 0) break; error = ifnet_ioctl(ifp, SOCK_DOM(so), cmd, data); if (error != 0) break; ifnet_touch_lastchange(ifp); break; case SIOCGIFSTATUS: /* struct ifstat */ VERIFY(ifs != NULL); ifs->ascii[0] = '\0'; error = ifnet_ioctl(ifp, SOCK_DOM(so), cmd, (caddr_t)ifs); bcopy(ifs, data, sizeof (*ifs)); break; case SIOCGIFMEDIA32: /* struct ifmediareq32 */ case SIOCGIFMEDIA64: /* struct ifmediareq64 */ error = ifnet_ioctl(ifp, SOCK_DOM(so), cmd, data); break; case SIOCSIFDESC: /* struct if_descreq */ case SIOCGIFDESC: /* struct if_descreq */ error = ifioctl_ifdesc(ifp, cmd, data, p); break; case SIOCSIFLINKPARAMS: /* struct if_linkparamsreq */ case SIOCGIFLINKPARAMS: /* struct if_linkparamsreq */ error = ifioctl_linkparams(ifp, cmd, data, p); break; case SIOCGIFQUEUESTATS: /* struct if_qstatsreq */ error = ifioctl_qstats(ifp, cmd, data); break; case SIOCSIFTHROTTLE: /* struct if_throttlereq */ case SIOCGIFTHROTTLE: /* struct if_throttlereq */ error = ifioctl_throttle(ifp, cmd, data, p); break; case SIOCAIFAGENTID: /* struct if_agentidreq */ case SIOCDIFAGENTID: /* struct if_agentidreq */ case SIOCGIFAGENTIDS32: /* struct if_agentidsreq32 */ case SIOCGIFAGENTIDS64: /* struct if_agentidsreq64 */ error = ifioctl_netagent(ifp, cmd, data, p); break; case SIOCSIFNETSIGNATURE: /* struct if_nsreq */ case SIOCGIFNETSIGNATURE: /* struct if_nsreq */ error = ifioctl_netsignature(ifp, cmd, data); break; #if INET6 case SIOCSIFNAT64PREFIX: /* struct if_nsreq */ case SIOCGIFNAT64PREFIX: /* struct if_nsreq */ error = ifioctl_nat64prefix(ifp, cmd, data); break; #endif case SIOCGIFPROTOLIST32: /* struct if_protolistreq32 */ case SIOCGIFPROTOLIST64: /* struct if_protolistreq64 */ error = ifioctl_protolist(ifp, cmd, data); break; default: if (so->so_proto == NULL) { error = EOPNOTSUPP; break; } socket_lock(so, 1); error = ((*so->so_proto->pr_usrreqs->pru_control)(so, cmd, data, ifp, p)); socket_unlock(so, 1); if (error == EOPNOTSUPP || error == ENOTSUP) { error = ifnet_ioctl(ifp, SOCK_DOM(so), cmd, data); } break; } done: if (ifs != NULL) _FREE(ifs, M_DEVBUF); if (if_verbose) { if (ifname[0] == '\0') (void) snprintf(ifname, sizeof (ifname), "%s", "NULL"); else if (ifp != NULL) (void) snprintf(ifname, sizeof (ifname), "%s", if_name(ifp)); if (error != 0) { printf("%s[%s,%d]: ifp %s cmd 0x%08lx (%c%c [%lu] " "%c %lu) error %d\n", __func__, proc_name_address(p), proc_pid(p), ifname, cmd, (cmd & IOC_IN) ? 'I' : ' ', (cmd & IOC_OUT) ? 'O' : ' ', IOCPARM_LEN(cmd), (char)IOCGROUP(cmd), cmd & 0xff, error); } else if (if_verbose > 1) { printf("%s[%s,%d]: ifp %s cmd 0x%08lx (%c%c [%lu] " "%c %lu) OK\n", __func__, proc_name_address(p), proc_pid(p), ifname, cmd, (cmd & IOC_IN) ? 'I' : ' ', (cmd & IOC_OUT) ? 'O' : ' ', IOCPARM_LEN(cmd), (char)IOCGROUP(cmd), cmd & 0xff); } } return (error); } static __attribute__((noinline)) int ifioctl_ifreq(struct socket *so, u_long cmd, struct ifreq *ifr, struct proc *p) { struct ifnet *ifp; u_long ocmd = cmd; int error = 0; struct kev_msg ev_msg; struct net_event_data ev_data; bzero(&ev_data, sizeof (struct net_event_data)); bzero(&ev_msg, sizeof (struct kev_msg)); switch (cmd) { case SIOCIFCREATE: case SIOCIFCREATE2: error = proc_suser(p); if (error) return (error); return (if_clone_create(ifr->ifr_name, sizeof(ifr->ifr_name), cmd == SIOCIFCREATE2 ? ifr->ifr_data : NULL)); case SIOCIFDESTROY: error = proc_suser(p); if (error) return (error); return (if_clone_destroy(ifr->ifr_name)); } /* * ioctls which require ifp. Note that we acquire dlil_ifnet_lock * here to ensure that the ifnet, if found, has been fully attached. */ dlil_if_lock(); ifp = ifunit(ifr->ifr_name); dlil_if_unlock(); if (ifp == NULL) return (ENXIO); switch (cmd) { case SIOCGIFFLAGS: ifnet_lock_shared(ifp); ifr->ifr_flags = ifp->if_flags; ifnet_lock_done(ifp); break; case SIOCGIFEFLAGS: ifnet_lock_shared(ifp); ifr->ifr_eflags = ifp->if_eflags; ifnet_lock_done(ifp); break; case SIOCGIFCAP: ifnet_lock_shared(ifp); ifr->ifr_reqcap = ifp->if_capabilities; ifr->ifr_curcap = ifp->if_capenable; ifnet_lock_done(ifp); break; #if CONFIG_MACF_NET case SIOCGIFMAC: error = mac_ifnet_label_get(kauth_cred_get(), ifr, ifp); break; case SIOCSIFMAC: error = mac_ifnet_label_set(kauth_cred_get(), ifr, ifp); break; #endif /* CONFIG_MACF_NET */ case SIOCGIFMETRIC: ifnet_lock_shared(ifp); ifr->ifr_metric = ifp->if_metric; ifnet_lock_done(ifp); break; case SIOCGIFMTU: ifnet_lock_shared(ifp); ifr->ifr_mtu = ifp->if_mtu; ifnet_lock_done(ifp); break; case SIOCGIFPHYS: ifnet_lock_shared(ifp); ifr->ifr_phys = ifp->if_physical; ifnet_lock_done(ifp); break; case SIOCSIFFLAGS: error = proc_suser(p); if (error != 0) break; (void) ifnet_set_flags(ifp, ifr->ifr_flags, (u_int16_t)~IFF_CANTCHANGE); /* * Note that we intentionally ignore any error from below * for the SIOCSIFFLAGS case. */ (void) ifnet_ioctl(ifp, SOCK_DOM(so), cmd, (caddr_t)ifr); /* * Send the event even upon error from the driver because * we changed the flags. */ dlil_post_sifflags_msg(ifp); ifnet_touch_lastchange(ifp); break; case SIOCSIFCAP: error = proc_suser(p); if (error != 0) break; if ((ifr->ifr_reqcap & ~ifp->if_capabilities)) { error = EINVAL; break; } error = ifnet_ioctl(ifp, SOCK_DOM(so), cmd, (caddr_t)ifr); ifnet_touch_lastchange(ifp); break; case SIOCSIFMETRIC: error = proc_suser(p); if (error != 0) break; ifp->if_metric = ifr->ifr_metric; ev_msg.vendor_code = KEV_VENDOR_APPLE; ev_msg.kev_class = KEV_NETWORK_CLASS; ev_msg.kev_subclass = KEV_DL_SUBCLASS; ev_msg.event_code = KEV_DL_SIFMETRICS; strlcpy(&ev_data.if_name[0], ifp->if_name, IFNAMSIZ); ev_data.if_family = ifp->if_family; ev_data.if_unit = (u_int32_t) ifp->if_unit; ev_msg.dv[0].data_length = sizeof(struct net_event_data); ev_msg.dv[0].data_ptr = &ev_data; ev_msg.dv[1].data_length = 0; dlil_post_complete_msg(ifp, &ev_msg); ifnet_touch_lastchange(ifp); break; case SIOCSIFPHYS: error = proc_suser(p); if (error != 0) break; error = ifnet_ioctl(ifp, SOCK_DOM(so), cmd, (caddr_t)ifr); if (error != 0) break; ev_msg.vendor_code = KEV_VENDOR_APPLE; ev_msg.kev_class = KEV_NETWORK_CLASS; ev_msg.kev_subclass = KEV_DL_SUBCLASS; ev_msg.event_code = KEV_DL_SIFPHYS; strlcpy(&ev_data.if_name[0], ifp->if_name, IFNAMSIZ); ev_data.if_family = ifp->if_family; ev_data.if_unit = (u_int32_t) ifp->if_unit; ev_msg.dv[0].data_length = sizeof(struct net_event_data); ev_msg.dv[0].data_ptr = &ev_data; ev_msg.dv[1].data_length = 0; dlil_post_complete_msg(ifp, &ev_msg); ifnet_touch_lastchange(ifp); break; case SIOCSIFMTU: { u_int32_t oldmtu = ifp->if_mtu; struct ifclassq *ifq = &ifp->if_snd; error = proc_suser(p); if (error != 0) break; if (ifp->if_ioctl == NULL) { error = EOPNOTSUPP; break; } if (ifr->ifr_mtu < IF_MINMTU || ifr->ifr_mtu > IF_MAXMTU) { error = EINVAL; break; } error = ifnet_ioctl(ifp, SOCK_DOM(so), cmd, (caddr_t)ifr); if (error != 0) break; ev_msg.vendor_code = KEV_VENDOR_APPLE; ev_msg.kev_class = KEV_NETWORK_CLASS; ev_msg.kev_subclass = KEV_DL_SUBCLASS; ev_msg.event_code = KEV_DL_SIFMTU; strlcpy(&ev_data.if_name[0], ifp->if_name, IFNAMSIZ); ev_data.if_family = ifp->if_family; ev_data.if_unit = (u_int32_t) ifp->if_unit; ev_msg.dv[0].data_length = sizeof(struct net_event_data); ev_msg.dv[0].data_ptr = &ev_data; ev_msg.dv[1].data_length = 0; dlil_post_complete_msg(ifp, &ev_msg); ifnet_touch_lastchange(ifp); rt_ifmsg(ifp); /* * If the link MTU changed, do network layer specific procedure * and update all route entries associated with the interface, * so that their MTU metric gets updated. */ if (ifp->if_mtu != oldmtu) { if_rtmtu_update(ifp); #if INET6 nd6_setmtu(ifp); #endif /* INET6 */ /* Inform all transmit queues about the new MTU */ IFCQ_LOCK(ifq); ifnet_update_sndq(ifq, CLASSQ_EV_LINK_MTU); IFCQ_UNLOCK(ifq); } break; } case SIOCADDMULTI: case SIOCDELMULTI: error = proc_suser(p); if (error != 0) break; /* Don't allow group membership on non-multicast interfaces. */ if ((ifp->if_flags & IFF_MULTICAST) == 0) { error = EOPNOTSUPP; break; } /* Don't let users screw up protocols' entries. */ if (ifr->ifr_addr.sa_family != AF_UNSPEC && ifr->ifr_addr.sa_family != AF_LINK) { error = EINVAL; break; } /* * User is permitted to anonymously join a particular link * multicast group via SIOCADDMULTI. Subsequent join requested * for the same record which has an outstanding refcnt from a * past if_addmulti_anon() will not result in EADDRINUSE error * (unlike other BSDs.) Anonymously leaving a group is also * allowed only as long as there is an outstanding refcnt held * by a previous anonymous request, or else ENOENT (even if the * link-layer multicast membership exists for a network-layer * membership.) */ if (cmd == SIOCADDMULTI) { error = if_addmulti_anon(ifp, &ifr->ifr_addr, NULL); ev_msg.event_code = KEV_DL_ADDMULTI; } else { error = if_delmulti_anon(ifp, &ifr->ifr_addr); ev_msg.event_code = KEV_DL_DELMULTI; } if (error != 0) break; ev_msg.vendor_code = KEV_VENDOR_APPLE; ev_msg.kev_class = KEV_NETWORK_CLASS; ev_msg.kev_subclass = KEV_DL_SUBCLASS; strlcpy(&ev_data.if_name[0], ifp->if_name, IFNAMSIZ); ev_data.if_family = ifp->if_family; ev_data.if_unit = (u_int32_t) ifp->if_unit; ev_msg.dv[0].data_length = sizeof(struct net_event_data); ev_msg.dv[0].data_ptr = &ev_data; ev_msg.dv[1].data_length = 0; dlil_post_complete_msg(ifp, &ev_msg); ifnet_touch_lastchange(ifp); break; case SIOCDIFPHYADDR: case SIOCSIFMEDIA: case SIOCSIFGENERIC: case SIOCSIFLLADDR: case SIOCSIFALTMTU: case SIOCSIFVLAN: case SIOCSIFBOND: error = proc_suser(p); if (error != 0) break; error = ifnet_ioctl(ifp, SOCK_DOM(so), cmd, (caddr_t)ifr); if (error != 0) break; ifnet_touch_lastchange(ifp); break; case SIOCGIFLLADDR: { struct sockaddr_dl *sdl = SDL(ifp->if_lladdr->ifa_addr); if (sdl->sdl_alen == 0) { error = EADDRNOTAVAIL; break; } /* If larger than 14-bytes we'll need another mechanism */ if (sdl->sdl_alen > sizeof (ifr->ifr_addr.sa_data)) { error = EMSGSIZE; break; } /* Follow the same convention used by SIOCSIFLLADDR */ bzero(&ifr->ifr_addr, sizeof (ifr->ifr_addr)); ifr->ifr_addr.sa_family = AF_LINK; ifr->ifr_addr.sa_len = sdl->sdl_alen; error = ifnet_guarded_lladdr_copy_bytes(ifp, &ifr->ifr_addr.sa_data, sdl->sdl_alen); break; } case SIOCGIFTYPE: ifr->ifr_type.ift_type = ifp->if_type; ifr->ifr_type.ift_family = ifp->if_family; ifr->ifr_type.ift_subfamily = ifp->if_subfamily; break; case SIOCGIFFUNCTIONALTYPE: ifr->ifr_functional_type = if_functional_type(ifp, FALSE); break; case SIOCGIFPSRCADDR: case SIOCGIFPDSTADDR: case SIOCGIFGENERIC: case SIOCGIFDEVMTU: case SIOCGIFVLAN: case SIOCGIFBOND: error = ifnet_ioctl(ifp, SOCK_DOM(so), cmd, (caddr_t)ifr); break; case SIOCGIFWAKEFLAGS: ifnet_lock_shared(ifp); ifr->ifr_wake_flags = ifnet_get_wake_flags(ifp); ifnet_lock_done(ifp); break; case SIOCGIFGETRTREFCNT: ifnet_lock_shared(ifp); ifr->ifr_route_refcnt = ifp->if_route_refcnt; ifnet_lock_done(ifp); break; case SIOCSIFOPPORTUNISTIC: case SIOCGIFOPPORTUNISTIC: error = ifnet_getset_opportunistic(ifp, cmd, ifr, p); break; case SIOCGIFLINKQUALITYMETRIC: ifnet_lock_shared(ifp); if ((ifp->if_interface_state.valid_bitmask & IF_INTERFACE_STATE_LQM_STATE_VALID)) { ifr->ifr_link_quality_metric = ifp->if_interface_state.lqm_state; } else if (IF_FULLY_ATTACHED(ifp)) { ifr->ifr_link_quality_metric = IFNET_LQM_THRESH_UNKNOWN; } else { ifr->ifr_link_quality_metric = IFNET_LQM_THRESH_OFF; } ifnet_lock_done(ifp); break; case SIOCSIFLOG: case SIOCGIFLOG: error = ifnet_getset_log(ifp, cmd, ifr, p); break; case SIOCGIFDELEGATE: ifnet_lock_shared(ifp); ifr->ifr_delegated = ((ifp->if_delegated.ifp != NULL) ? ifp->if_delegated.ifp->if_index : 0); ifnet_lock_done(ifp); break; case SIOCGIFEXPENSIVE: ifnet_lock_shared(ifp); if (ifp->if_eflags & IFEF_EXPENSIVE) ifr->ifr_expensive = 1; else ifr->ifr_expensive = 0; ifnet_lock_done(ifp); break; case SIOCSIFEXPENSIVE: { struct ifnet *difp; if ((error = priv_check_cred(kauth_cred_get(), PRIV_NET_INTERFACE_CONTROL, 0)) != 0) return (error); ifnet_lock_exclusive(ifp); if (ifr->ifr_expensive) ifp->if_eflags |= IFEF_EXPENSIVE; else ifp->if_eflags &= ~IFEF_EXPENSIVE; ifnet_lock_done(ifp); /* * Update the expensive bit in the delegated interface * structure. */ ifnet_head_lock_shared(); TAILQ_FOREACH(difp, &ifnet_head, if_link) { ifnet_lock_exclusive(difp); if (difp->if_delegated.ifp == ifp) { difp->if_delegated.expensive = ifp->if_eflags & IFEF_EXPENSIVE ? 1 : 0; } ifnet_lock_done(difp); } ifnet_head_done(); break; } case SIOCGIF2KCL: ifnet_lock_shared(ifp); if (ifp->if_eflags & IFEF_2KCL) ifr->ifr_2kcl = 1; else ifr->ifr_2kcl = 0; ifnet_lock_done(ifp); break; case SIOCSIF2KCL: if ((error = priv_check_cred(kauth_cred_get(), PRIV_NET_INTERFACE_CONTROL, 0)) != 0) return (error); ifnet_lock_exclusive(ifp); if (ifr->ifr_2kcl) ifp->if_eflags |= IFEF_2KCL; else ifp->if_eflags &= ~IFEF_2KCL; ifnet_lock_done(ifp); break; case SIOCGSTARTDELAY: ifnet_lock_shared(ifp); if (ifp->if_eflags & IFEF_ENQUEUE_MULTI) { ifr->ifr_start_delay_qlen = ifp->if_start_delay_qlen; ifr->ifr_start_delay_timeout = ifp->if_start_delay_timeout; } else { ifr->ifr_start_delay_qlen = 0; ifr->ifr_start_delay_timeout = 0; } ifnet_lock_done(ifp); break; case SIOCSIFDSTADDR: case SIOCSIFADDR: case SIOCSIFBRDADDR: case SIOCSIFNETMASK: case OSIOCGIFADDR: case OSIOCGIFDSTADDR: case OSIOCGIFBRDADDR: case OSIOCGIFNETMASK: case SIOCSIFKPI: VERIFY(so->so_proto != NULL); if (cmd == SIOCSIFDSTADDR || cmd == SIOCSIFADDR || cmd == SIOCSIFBRDADDR || cmd == SIOCSIFNETMASK) { #if BYTE_ORDER != BIG_ENDIAN if (ifr->ifr_addr.sa_family == 0 && ifr->ifr_addr.sa_len < 16) { ifr->ifr_addr.sa_family = ifr->ifr_addr.sa_len; ifr->ifr_addr.sa_len = 16; } #else if (ifr->ifr_addr.sa_len == 0) ifr->ifr_addr.sa_len = 16; #endif } else if (cmd == OSIOCGIFADDR) { cmd = SIOCGIFADDR; /* struct ifreq */ } else if (cmd == OSIOCGIFDSTADDR) { cmd = SIOCGIFDSTADDR; /* struct ifreq */ } else if (cmd == OSIOCGIFBRDADDR) { cmd = SIOCGIFBRDADDR; /* struct ifreq */ } else if (cmd == OSIOCGIFNETMASK) { cmd = SIOCGIFNETMASK; /* struct ifreq */ } socket_lock(so, 1); error = ((*so->so_proto->pr_usrreqs->pru_control)(so, cmd, (caddr_t)ifr, ifp, p)); socket_unlock(so, 1); switch (ocmd) { case OSIOCGIFADDR: case OSIOCGIFDSTADDR: case OSIOCGIFBRDADDR: case OSIOCGIFNETMASK: bcopy(&ifr->ifr_addr.sa_family, &ifr->ifr_addr, sizeof (u_short)); } if (cmd == SIOCSIFKPI) { int temperr = proc_suser(p); if (temperr != 0) error = temperr; } if (error == EOPNOTSUPP || error == ENOTSUP) { error = ifnet_ioctl(ifp, SOCK_DOM(so), cmd, (caddr_t)ifr); } break; case SIOCGIFINTERFACESTATE: if_get_state(ifp, &ifr->ifr_interface_state); break; case SIOCSIFINTERFACESTATE: if ((error = priv_check_cred(kauth_cred_get(), PRIV_NET_INTERFACE_CONTROL, 0)) != 0) return (error); error = if_state_update(ifp, &ifr->ifr_interface_state); break; case SIOCSIFPROBECONNECTIVITY: if ((error = priv_check_cred(kauth_cred_get(), PRIV_NET_INTERFACE_CONTROL, 0)) != 0) return (error); error = if_probe_connectivity(ifp, ifr->ifr_probe_connectivity); break; case SIOCGIFPROBECONNECTIVITY: if ((error = priv_check_cred(kauth_cred_get(), PRIV_NET_INTERFACE_CONTROL, 0)) != 0) return (error); if (ifp->if_eflags & IFEF_PROBE_CONNECTIVITY) ifr->ifr_probe_connectivity = 1; else ifr->ifr_probe_connectivity = 0; break; case SIOCGECNMODE: if ((ifp->if_eflags & (IFEF_ECN_ENABLE|IFEF_ECN_DISABLE)) == IFEF_ECN_ENABLE) ifr->ifr_ecn_mode = IFRTYPE_ECN_ENABLE; else if ((ifp->if_eflags & (IFEF_ECN_ENABLE|IFEF_ECN_DISABLE)) == IFEF_ECN_DISABLE) ifr->ifr_ecn_mode = IFRTYPE_ECN_DISABLE; else ifr->ifr_ecn_mode = IFRTYPE_ECN_DEFAULT; break; case SIOCSECNMODE: if ((error = priv_check_cred(kauth_cred_get(), PRIV_NET_INTERFACE_CONTROL, 0)) != 0) return (error); if (ifr->ifr_ecn_mode == IFRTYPE_ECN_DEFAULT) { ifp->if_eflags &= ~(IFEF_ECN_ENABLE|IFEF_ECN_DISABLE); } else if (ifr->ifr_ecn_mode == IFRTYPE_ECN_ENABLE) { ifp->if_eflags |= IFEF_ECN_ENABLE; ifp->if_eflags &= ~IFEF_ECN_DISABLE; } else if (ifr->ifr_ecn_mode == IFRTYPE_ECN_DISABLE) { ifp->if_eflags |= IFEF_ECN_DISABLE; ifp->if_eflags &= ~IFEF_ECN_ENABLE; } else error = EINVAL; break; case SIOCSIFTIMESTAMPENABLE: case SIOCSIFTIMESTAMPDISABLE: error = proc_suser(p); if (error != 0) break; ifnet_lock_exclusive(ifp); if ((cmd == SIOCSIFTIMESTAMPENABLE && (ifp->if_xflags & IFXF_TIMESTAMP_ENABLED) != 0) || (cmd == SIOCSIFTIMESTAMPDISABLE && (ifp->if_xflags & IFXF_TIMESTAMP_ENABLED) == 0)) { ifnet_lock_done(ifp); break; } if (cmd == SIOCSIFTIMESTAMPENABLE) ifp->if_xflags |= IFXF_TIMESTAMP_ENABLED; else ifp->if_xflags &= ~IFXF_TIMESTAMP_ENABLED; ifnet_lock_done(ifp); /* * Pass the setting to the interface if it supports either * software or hardware time stamping */ if (ifp->if_capabilities & (IFCAP_HW_TIMESTAMP | IFCAP_SW_TIMESTAMP)) { error = ifnet_ioctl(ifp, SOCK_DOM(so), cmd, (caddr_t)ifr); } break; case SIOCGIFTIMESTAMPENABLED: { if ((ifp->if_xflags & IFXF_TIMESTAMP_ENABLED) != 0) ifr->ifr_intval = 1; else ifr->ifr_intval = 0; break; } case SIOCSQOSMARKINGMODE: if ((error = priv_check_cred(kauth_cred_get(), PRIV_NET_INTERFACE_CONTROL, 0)) != 0) return (error); error = if_set_qosmarking_mode(ifp, ifr->ifr_qosmarking_mode); break; case SIOCGQOSMARKINGMODE: ifr->ifr_qosmarking_mode = ifp->if_qosmarking_mode; break; case SIOCSQOSMARKINGENABLED: if ((error = priv_check_cred(kauth_cred_get(), PRIV_NET_INTERFACE_CONTROL, 0)) != 0) return (error); if (ifr->ifr_qosmarking_enabled != 0) ifp->if_eflags |= IFEF_QOSMARKING_ENABLED; else ifp->if_eflags &= ~IFEF_QOSMARKING_ENABLED; break; case SIOCGQOSMARKINGENABLED: ifr->ifr_qosmarking_enabled = (ifp->if_eflags & IFEF_QOSMARKING_ENABLED) ? 1 : 0; break; case SIOCSIFDISABLEOUTPUT: #if (DEBUG || DEVELOPMENT) if (ifr->ifr_disable_output == 1) { error = ifnet_disable_output(ifp); } else if (ifr->ifr_disable_output == 0) { error = ifnet_enable_output(ifp); } else { error = EINVAL; } #else error = EINVAL; #endif /* (DEBUG || DEVELOPMENT) */ break; case SIOCSIFLOWINTERNET: if ((error = priv_check_cred(kauth_cred_get(), PRIV_NET_INTERFACE_CONTROL, 0)) != 0) return (error); ifnet_lock_exclusive(ifp); if (ifr->ifr_low_internet & IFRTYPE_LOW_INTERNET_ENABLE_UL) ifp->if_xflags |= IFXF_LOW_INTERNET_UL; else ifp->if_xflags &= ~(IFXF_LOW_INTERNET_UL); if (ifr->ifr_low_internet & IFRTYPE_LOW_INTERNET_ENABLE_DL) ifp->if_xflags |= IFXF_LOW_INTERNET_DL; else ifp->if_xflags &= ~(IFXF_LOW_INTERNET_DL); ifnet_lock_done(ifp); break; case SIOCGIFLOWINTERNET: ifnet_lock_shared(ifp); ifr->ifr_low_internet = 0; if (ifp->if_xflags & IFXF_LOW_INTERNET_UL) ifr->ifr_low_internet |= IFRTYPE_LOW_INTERNET_ENABLE_UL; if (ifp->if_xflags & IFXF_LOW_INTERNET_DL) ifr->ifr_low_internet |= IFRTYPE_LOW_INTERNET_ENABLE_DL; ifnet_lock_done(ifp); break; default: VERIFY(0); /* NOTREACHED */ } return (error); } int ifioctllocked(struct socket *so, u_long cmd, caddr_t data, struct proc *p) { int error; socket_unlock(so, 0); error = ifioctl(so, cmd, data, p); socket_lock(so, 0); return (error); } /* * Set/clear promiscuous mode on interface ifp based on the truth value * of pswitch. The calls are reference counted so that only the first * "on" request actually has an effect, as does the final "off" request. * Results are undefined if the "off" and "on" requests are not matched. */ errno_t ifnet_set_promiscuous( ifnet_t ifp, int pswitch) { int error = 0; int oldflags = 0; int newflags = 0; ifnet_lock_exclusive(ifp); oldflags = ifp->if_flags; ifp->if_pcount += pswitch ? 1 : -1; if (ifp->if_pcount > 0) ifp->if_flags |= IFF_PROMISC; else ifp->if_flags &= ~IFF_PROMISC; newflags = ifp->if_flags; ifnet_lock_done(ifp); if (newflags != oldflags && (newflags & IFF_UP) != 0) { error = ifnet_ioctl(ifp, 0, SIOCSIFFLAGS, NULL); if (error == 0) { rt_ifmsg(ifp); } else { ifnet_lock_exclusive(ifp); // revert the flags ifp->if_pcount -= pswitch ? 1 : -1; if (ifp->if_pcount > 0) ifp->if_flags |= IFF_PROMISC; else ifp->if_flags &= ~IFF_PROMISC; ifnet_lock_done(ifp); } } if (newflags != oldflags) { log(LOG_INFO, "%s: promiscuous mode %s%s\n", if_name(ifp), (newflags & IFF_PROMISC) != 0 ? "enable" : "disable", error != 0 ? " failed" : " succeeded"); } return (error); } /* * Return interface configuration * of system. List may be used * in later ioctl's (above) to get * other information. */ /*ARGSUSED*/ static int ifconf(u_long cmd, user_addr_t ifrp, int *ret_space) { struct ifnet *ifp = NULL; struct ifaddr *ifa; struct ifreq ifr; int error = 0; size_t space; net_thread_marks_t marks; marks = net_thread_marks_push(NET_THREAD_CKREQ_LLADDR); /* * Zero the ifr buffer to make sure we don't * disclose the contents of the stack. */ bzero(&ifr, sizeof (struct ifreq)); space = *ret_space; ifnet_head_lock_shared(); for (ifp = ifnet_head.tqh_first; space > sizeof (ifr) && ifp; ifp = ifp->if_link.tqe_next) { char workbuf[64]; size_t ifnlen, addrs; ifnlen = snprintf(workbuf, sizeof (workbuf), "%s", if_name(ifp)); if (ifnlen + 1 > sizeof (ifr.ifr_name)) { error = ENAMETOOLONG; break; } else { strlcpy(ifr.ifr_name, workbuf, IFNAMSIZ); } ifnet_lock_shared(ifp); addrs = 0; ifa = ifp->if_addrhead.tqh_first; for (; space > sizeof (ifr) && ifa; ifa = ifa->ifa_link.tqe_next) { struct sockaddr *sa; union { struct sockaddr sa; struct sockaddr_dl sdl; uint8_t buf[SOCK_MAXADDRLEN + 1]; } u; /* * Make sure to accomodate the largest possible * size of SA(if_lladdr)->sa_len. */ _CASSERT(sizeof (u) == (SOCK_MAXADDRLEN + 1)); IFA_LOCK(ifa); sa = ifa->ifa_addr; addrs++; if (ifa == ifp->if_lladdr) { VERIFY(sa->sa_family == AF_LINK); bcopy(sa, &u, sa->sa_len); IFA_UNLOCK(ifa); ifnet_guarded_lladdr_copy_bytes(ifp, LLADDR(&u.sdl), u.sdl.sdl_alen); IFA_LOCK(ifa); sa = &u.sa; } if (cmd == OSIOCGIFCONF32 || cmd == OSIOCGIFCONF64) { struct osockaddr *osa = (struct osockaddr *)(void *)&ifr.ifr_addr; ifr.ifr_addr = *sa; osa->sa_family = sa->sa_family; error = copyout((caddr_t)&ifr, ifrp, sizeof (ifr)); ifrp += sizeof (struct ifreq); } else if (sa->sa_len <= sizeof (*sa)) { ifr.ifr_addr = *sa; error = copyout((caddr_t)&ifr, ifrp, sizeof (ifr)); ifrp += sizeof (struct ifreq); } else { if (space < sizeof (ifr) + sa->sa_len - sizeof (*sa)) { IFA_UNLOCK(ifa); break; } space -= sa->sa_len - sizeof (*sa); error = copyout((caddr_t)&ifr, ifrp, sizeof (ifr.ifr_name)); if (error == 0) { error = copyout((caddr_t)sa, (ifrp + offsetof(struct ifreq, ifr_addr)), sa->sa_len); } ifrp += (sa->sa_len + offsetof(struct ifreq, ifr_addr)); } IFA_UNLOCK(ifa); if (error) break; space -= sizeof (ifr); } ifnet_lock_done(ifp); if (error) break; if (!addrs) { bzero((caddr_t)&ifr.ifr_addr, sizeof (ifr.ifr_addr)); error = copyout((caddr_t)&ifr, ifrp, sizeof (ifr)); if (error) break; space -= sizeof (ifr); ifrp += sizeof (struct ifreq); } } ifnet_head_done(); *ret_space -= space; net_thread_marks_pop(marks); return (error); } /* * Just like if_promisc(), but for all-multicast-reception mode. */ int if_allmulti(struct ifnet *ifp, int onswitch) { int error = 0; int modified = 0; ifnet_lock_exclusive(ifp); if (onswitch) { if (ifp->if_amcount++ == 0) { ifp->if_flags |= IFF_ALLMULTI; modified = 1; } } else { if (ifp->if_amcount > 1) { ifp->if_amcount--; } else { ifp->if_amcount = 0; ifp->if_flags &= ~IFF_ALLMULTI; modified = 1; } } ifnet_lock_done(ifp); if (modified) error = ifnet_ioctl(ifp, 0, SIOCSIFFLAGS, NULL); if (error == 0) rt_ifmsg(ifp); return (error); } static struct ifmultiaddr * ifma_alloc(int how) { struct ifmultiaddr *ifma; ifma = (how == M_WAITOK) ? zalloc(ifma_zone) : zalloc_noblock(ifma_zone); if (ifma != NULL) { bzero(ifma, ifma_size); lck_mtx_init(&ifma->ifma_lock, ifa_mtx_grp, ifa_mtx_attr); ifma->ifma_debug |= IFD_ALLOC; if (ifma_debug != 0) { ifma->ifma_debug |= IFD_DEBUG; ifma->ifma_trace = ifma_trace; } } return (ifma); } static void ifma_free(struct ifmultiaddr *ifma) { IFMA_LOCK(ifma); if (ifma->ifma_protospec != NULL) { panic("%s: Protospec not NULL for ifma=%p", __func__, ifma); /* NOTREACHED */ } else if ((ifma->ifma_flags & IFMAF_ANONYMOUS) || ifma->ifma_anoncnt != 0) { panic("%s: Freeing ifma=%p with outstanding anon req", __func__, ifma); /* NOTREACHED */ } else if (ifma->ifma_debug & IFD_ATTACHED) { panic("%s: ifma=%p attached to ifma_ifp=%p is being freed", __func__, ifma, ifma->ifma_ifp); /* NOTREACHED */ } else if (!(ifma->ifma_debug & IFD_ALLOC)) { panic("%s: ifma %p cannot be freed", __func__, ifma); /* NOTREACHED */ } else if (ifma->ifma_refcount != 0) { panic("%s: non-zero refcount ifma=%p", __func__, ifma); /* NOTREACHED */ } else if (ifma->ifma_reqcnt != 0) { panic("%s: non-zero reqcnt ifma=%p", __func__, ifma); /* NOTREACHED */ } else if (ifma->ifma_ifp != NULL) { panic("%s: non-NULL ifma_ifp=%p for ifma=%p", __func__, ifma->ifma_ifp, ifma); /* NOTREACHED */ } else if (ifma->ifma_ll != NULL) { panic("%s: non-NULL ifma_ll=%p for ifma=%p", __func__, ifma->ifma_ll, ifma); /* NOTREACHED */ } ifma->ifma_debug &= ~IFD_ALLOC; if ((ifma->ifma_debug & (IFD_DEBUG | IFD_TRASHED)) == (IFD_DEBUG | IFD_TRASHED)) { lck_mtx_lock(&ifma_trash_lock); TAILQ_REMOVE(&ifma_trash_head, (struct ifmultiaddr_dbg *)ifma, ifma_trash_link); lck_mtx_unlock(&ifma_trash_lock); ifma->ifma_debug &= ~IFD_TRASHED; } IFMA_UNLOCK(ifma); if (ifma->ifma_addr != NULL) { FREE(ifma->ifma_addr, M_IFADDR); ifma->ifma_addr = NULL; } lck_mtx_destroy(&ifma->ifma_lock, ifa_mtx_grp); zfree(ifma_zone, ifma); } static void ifma_trace(struct ifmultiaddr *ifma, int refhold) { struct ifmultiaddr_dbg *ifma_dbg = (struct ifmultiaddr_dbg *)ifma; ctrace_t *tr; u_int32_t idx; u_int16_t *cnt; if (!(ifma->ifma_debug & IFD_DEBUG)) { panic("%s: ifma %p has no debug structure", __func__, ifma); /* NOTREACHED */ } if (refhold) { cnt = &ifma_dbg->ifma_refhold_cnt; tr = ifma_dbg->ifma_refhold; } else { cnt = &ifma_dbg->ifma_refrele_cnt; tr = ifma_dbg->ifma_refrele; } idx = atomic_add_16_ov(cnt, 1) % IFMA_TRACE_HIST_SIZE; ctrace_record(&tr[idx]); } void ifma_addref(struct ifmultiaddr *ifma, int locked) { if (!locked) IFMA_LOCK(ifma); else IFMA_LOCK_ASSERT_HELD(ifma); if (++ifma->ifma_refcount == 0) { panic("%s: ifma=%p wraparound refcnt", __func__, ifma); /* NOTREACHED */ } else if (ifma->ifma_trace != NULL) { (*ifma->ifma_trace)(ifma, TRUE); } if (!locked) IFMA_UNLOCK(ifma); } void ifma_remref(struct ifmultiaddr *ifma) { struct ifmultiaddr *ll; IFMA_LOCK(ifma); if (ifma->ifma_refcount == 0) { panic("%s: ifma=%p negative refcnt", __func__, ifma); /* NOTREACHED */ } else if (ifma->ifma_trace != NULL) { (*ifma->ifma_trace)(ifma, FALSE); } --ifma->ifma_refcount; if (ifma->ifma_refcount > 0) { IFMA_UNLOCK(ifma); return; } ll = ifma->ifma_ll; ifma->ifma_ifp = NULL; ifma->ifma_ll = NULL; IFMA_UNLOCK(ifma); ifma_free(ifma); /* deallocate it */ if (ll != NULL) IFMA_REMREF(ll); } static void if_attach_ifma(struct ifnet *ifp, struct ifmultiaddr *ifma, int anon) { ifnet_lock_assert(ifp, IFNET_LCK_ASSERT_EXCLUSIVE); IFMA_LOCK_ASSERT_HELD(ifma); if (ifma->ifma_ifp != ifp) { panic("%s: Mismatch ifma_ifp=%p != ifp=%p", __func__, ifma->ifma_ifp, ifp); /* NOTREACHED */ } else if (ifma->ifma_debug & IFD_ATTACHED) { panic("%s: Attempt to attach an already attached ifma=%p", __func__, ifma); /* NOTREACHED */ } else if (anon && (ifma->ifma_flags & IFMAF_ANONYMOUS)) { panic("%s: ifma=%p unexpected IFMAF_ANONYMOUS", __func__, ifma); /* NOTREACHED */ } else if (ifma->ifma_debug & IFD_TRASHED) { panic("%s: Attempt to reattach a detached ifma=%p", __func__, ifma); /* NOTREACHED */ } ifma->ifma_reqcnt++; VERIFY(ifma->ifma_reqcnt == 1); IFMA_ADDREF_LOCKED(ifma); ifma->ifma_debug |= IFD_ATTACHED; if (anon) { ifma->ifma_anoncnt++; VERIFY(ifma->ifma_anoncnt == 1); ifma->ifma_flags |= IFMAF_ANONYMOUS; } LIST_INSERT_HEAD(&ifp->if_multiaddrs, ifma, ifma_link); } static int if_detach_ifma(struct ifnet *ifp, struct ifmultiaddr *ifma, int anon) { ifnet_lock_assert(ifp, IFNET_LCK_ASSERT_EXCLUSIVE); IFMA_LOCK_ASSERT_HELD(ifma); if (ifma->ifma_reqcnt == 0) { panic("%s: ifma=%p negative reqcnt", __func__, ifma); /* NOTREACHED */ } else if (anon && !(ifma->ifma_flags & IFMAF_ANONYMOUS)) { panic("%s: ifma=%p missing IFMAF_ANONYMOUS", __func__, ifma); /* NOTREACHED */ } else if (anon && ifma->ifma_anoncnt == 0) { panic("%s: ifma=%p negative anonreqcnt", __func__, ifma); /* NOTREACHED */ } else if (ifma->ifma_ifp != ifp) { panic("%s: Mismatch ifma_ifp=%p, ifp=%p", __func__, ifma->ifma_ifp, ifp); /* NOTREACHED */ } if (anon) { --ifma->ifma_anoncnt; if (ifma->ifma_anoncnt > 0) return (0); ifma->ifma_flags &= ~IFMAF_ANONYMOUS; } --ifma->ifma_reqcnt; if (ifma->ifma_reqcnt > 0) return (0); if (ifma->ifma_protospec != NULL) { panic("%s: Protospec not NULL for ifma=%p", __func__, ifma); /* NOTREACHED */ } else if ((ifma->ifma_flags & IFMAF_ANONYMOUS) || ifma->ifma_anoncnt != 0) { panic("%s: Detaching ifma=%p with outstanding anon req", __func__, ifma); /* NOTREACHED */ } else if (!(ifma->ifma_debug & IFD_ATTACHED)) { panic("%s: Attempt to detach an unattached address ifma=%p", __func__, ifma); /* NOTREACHED */ } else if (ifma->ifma_debug & IFD_TRASHED) { panic("%s: ifma %p is already in trash list", __func__, ifma); /* NOTREACHED */ } /* * NOTE: Caller calls IFMA_REMREF */ ifma->ifma_debug &= ~IFD_ATTACHED; LIST_REMOVE(ifma, ifma_link); if (LIST_EMPTY(&ifp->if_multiaddrs)) ifp->if_updatemcasts = 0; if (ifma->ifma_debug & IFD_DEBUG) { /* Become a regular mutex, just in case */ IFMA_CONVERT_LOCK(ifma); lck_mtx_lock(&ifma_trash_lock); TAILQ_INSERT_TAIL(&ifma_trash_head, (struct ifmultiaddr_dbg *)ifma, ifma_trash_link); lck_mtx_unlock(&ifma_trash_lock); ifma->ifma_debug |= IFD_TRASHED; } return (1); } /* * Find an ifmultiaddr that matches a socket address on an interface. * * Caller is responsible for holding the ifnet_lock while calling * this function. */ static int if_addmulti_doesexist(struct ifnet *ifp, const struct sockaddr *sa, struct ifmultiaddr **retifma, int anon) { struct ifmultiaddr *ifma; for (ifma = LIST_FIRST(&ifp->if_multiaddrs); ifma != NULL; ifma = LIST_NEXT(ifma, ifma_link)) { IFMA_LOCK_SPIN(ifma); if (!ifa_equal(sa, ifma->ifma_addr)) { IFMA_UNLOCK(ifma); continue; } if (anon) { VERIFY(!(ifma->ifma_flags & IFMAF_ANONYMOUS) || ifma->ifma_anoncnt != 0); VERIFY((ifma->ifma_flags & IFMAF_ANONYMOUS) || ifma->ifma_anoncnt == 0); ifma->ifma_anoncnt++; if (!(ifma->ifma_flags & IFMAF_ANONYMOUS)) { VERIFY(ifma->ifma_anoncnt == 1); ifma->ifma_flags |= IFMAF_ANONYMOUS; } } if (!anon || ifma->ifma_anoncnt == 1) { ifma->ifma_reqcnt++; VERIFY(ifma->ifma_reqcnt > 1); } if (retifma != NULL) { *retifma = ifma; IFMA_ADDREF_LOCKED(ifma); } IFMA_UNLOCK(ifma); return (0); } return (ENOENT); } /* * Radar 3642395, make sure all multicasts are in a standard format. */ static struct sockaddr * copy_and_normalize(const struct sockaddr *original) { int alen = 0; const u_char *aptr = NULL; struct sockaddr *copy = NULL; struct sockaddr_dl *sdl_new = NULL; int len = 0; if (original->sa_family != AF_LINK && original->sa_family != AF_UNSPEC) { /* Just make a copy */ MALLOC(copy, struct sockaddr *, original->sa_len, M_IFADDR, M_WAITOK); if (copy != NULL) bcopy(original, copy, original->sa_len); return (copy); } switch (original->sa_family) { case AF_LINK: { const struct sockaddr_dl *sdl_original = (struct sockaddr_dl *)(uintptr_t)(size_t)original; if (sdl_original->sdl_nlen + sdl_original->sdl_alen + sdl_original->sdl_slen + offsetof(struct sockaddr_dl, sdl_data) > sdl_original->sdl_len) return (NULL); alen = sdl_original->sdl_alen; aptr = CONST_LLADDR(sdl_original); } break; case AF_UNSPEC: { if (original->sa_len < ETHER_ADDR_LEN + offsetof(struct sockaddr, sa_data)) { return (NULL); } alen = ETHER_ADDR_LEN; aptr = (const u_char *)original->sa_data; } break; } if (alen == 0 || aptr == NULL) return (NULL); len = alen + offsetof(struct sockaddr_dl, sdl_data); MALLOC(sdl_new, struct sockaddr_dl *, len, M_IFADDR, M_WAITOK); if (sdl_new != NULL) { bzero(sdl_new, len); sdl_new->sdl_len = len; sdl_new->sdl_family = AF_LINK; sdl_new->sdl_alen = alen; bcopy(aptr, LLADDR(sdl_new), alen); } return ((struct sockaddr *)sdl_new); } /* * Network-layer protocol domains which hold references to the underlying * link-layer record must use this routine. */ int if_addmulti(struct ifnet *ifp, const struct sockaddr *sa, struct ifmultiaddr **retifma) { return (if_addmulti_common(ifp, sa, retifma, 0)); } /* * Anything other than network-layer protocol domains which hold references * to the underlying link-layer record must use this routine: SIOCADDMULTI * ioctl, ifnet_add_multicast(), if_bond. */ int if_addmulti_anon(struct ifnet *ifp, const struct sockaddr *sa, struct ifmultiaddr **retifma) { return (if_addmulti_common(ifp, sa, retifma, 1)); } /* * Register an additional multicast address with a network interface. * * - If the address is already present, bump the reference count on the * address and return. * - If the address is not link-layer, look up a link layer address. * - Allocate address structures for one or both addresses, and attach to the * multicast address list on the interface. If automatically adding a link * layer address, the protocol address will own a reference to the link * layer address, to be freed when it is freed. * - Notify the network device driver of an addition to the multicast address * list. * * 'sa' points to caller-owned memory with the desired multicast address. * * 'retifma' will be used to return a pointer to the resulting multicast * address reference, if desired. * * 'anon' indicates a link-layer address with no protocol address reference * made to it. Anything other than network-layer protocol domain requests * are considered as anonymous. */ static int if_addmulti_common(struct ifnet *ifp, const struct sockaddr *sa, struct ifmultiaddr **retifma, int anon) { struct sockaddr_storage storage; struct sockaddr *llsa = NULL; struct sockaddr *dupsa = NULL; int error = 0, ll_firstref = 0, lladdr; struct ifmultiaddr *ifma = NULL; struct ifmultiaddr *llifma = NULL; /* Only AF_UNSPEC/AF_LINK is allowed for an "anonymous" address */ VERIFY(!anon || sa->sa_family == AF_UNSPEC || sa->sa_family == AF_LINK); /* If sa is a AF_LINK or AF_UNSPEC, duplicate and normalize it */ if (sa->sa_family == AF_LINK || sa->sa_family == AF_UNSPEC) { dupsa = copy_and_normalize(sa); if (dupsa == NULL) { error = ENOMEM; goto cleanup; } sa = dupsa; } ifnet_lock_exclusive(ifp); if (!(ifp->if_flags & IFF_MULTICAST)) { error = EADDRNOTAVAIL; ifnet_lock_done(ifp); goto cleanup; } /* If the address is already present, return a new reference to it */ error = if_addmulti_doesexist(ifp, sa, retifma, anon); ifnet_lock_done(ifp); if (error == 0) goto cleanup; /* * The address isn't already present; give the link layer a chance * to accept/reject it, and also find out which AF_LINK address this * maps to, if it isn't one already. */ error = dlil_resolve_multi(ifp, sa, (struct sockaddr *)&storage, sizeof (storage)); if (error == 0 && storage.ss_len != 0) { llsa = copy_and_normalize((struct sockaddr *)&storage); if (llsa == NULL) { error = ENOMEM; goto cleanup; } llifma = ifma_alloc(M_WAITOK); if (llifma == NULL) { error = ENOMEM; goto cleanup; } } /* to be similar to FreeBSD */ if (error == EOPNOTSUPP) error = 0; else if (error != 0) goto cleanup; /* Allocate while we aren't holding any locks */ if (dupsa == NULL) { dupsa = copy_and_normalize(sa); if (dupsa == NULL) { error = ENOMEM; goto cleanup; } } ifma = ifma_alloc(M_WAITOK); if (ifma == NULL) { error = ENOMEM; goto cleanup; } ifnet_lock_exclusive(ifp); /* * Check again for the matching multicast. */ error = if_addmulti_doesexist(ifp, sa, retifma, anon); if (error == 0) { ifnet_lock_done(ifp); goto cleanup; } if (llifma != NULL) { VERIFY(!anon); /* must not get here if "anonymous" */ if (if_addmulti_doesexist(ifp, llsa, &ifma->ifma_ll, 0) == 0) { FREE(llsa, M_IFADDR); llsa = NULL; ifma_free(llifma); llifma = NULL; VERIFY(ifma->ifma_ll->ifma_ifp == ifp); } else { ll_firstref = 1; llifma->ifma_addr = llsa; llifma->ifma_ifp = ifp; IFMA_LOCK(llifma); if_attach_ifma(ifp, llifma, 0); /* add extra refcnt for ifma */ IFMA_ADDREF_LOCKED(llifma); IFMA_UNLOCK(llifma); ifma->ifma_ll = llifma; } } /* "anonymous" request should not result in network address */ VERIFY(!anon || ifma->ifma_ll == NULL); ifma->ifma_addr = dupsa; ifma->ifma_ifp = ifp; IFMA_LOCK(ifma); if_attach_ifma(ifp, ifma, anon); IFMA_ADDREF_LOCKED(ifma); /* for this routine */ if (retifma != NULL) { *retifma = ifma; IFMA_ADDREF_LOCKED(*retifma); /* for caller */ } lladdr = (ifma->ifma_addr->sa_family == AF_UNSPEC || ifma->ifma_addr->sa_family == AF_LINK); IFMA_UNLOCK(ifma); ifnet_lock_done(ifp); rt_newmaddrmsg(RTM_NEWMADDR, ifma); IFMA_REMREF(ifma); /* for this routine */ /* * We are certain we have added something, so call down to the * interface to let them know about it. Do this only for newly- * added AF_LINK/AF_UNSPEC address in the if_multiaddrs set. */ if (lladdr || ll_firstref) (void) ifnet_ioctl(ifp, 0, SIOCADDMULTI, NULL); if (ifp->if_updatemcasts > 0) ifp->if_updatemcasts = 0; return (0); cleanup: if (ifma != NULL) ifma_free(ifma); if (dupsa != NULL) FREE(dupsa, M_IFADDR); if (llifma != NULL) ifma_free(llifma); if (llsa != NULL) FREE(llsa, M_IFADDR); return (error); } /* * Delete a multicast group membership by network-layer group address. * This routine is deprecated. */ int if_delmulti(struct ifnet *ifp, const struct sockaddr *sa) { return (if_delmulti_common(NULL, ifp, sa, 0)); } /* * Delete a multicast group membership by group membership pointer. * Network-layer protocol domains must use this routine. */ int if_delmulti_ifma(struct ifmultiaddr *ifma) { return (if_delmulti_common(ifma, NULL, NULL, 0)); } /* * Anything other than network-layer protocol domains which hold references * to the underlying link-layer record must use this routine: SIOCDELMULTI * ioctl, ifnet_remove_multicast(), if_bond. */ int if_delmulti_anon(struct ifnet *ifp, const struct sockaddr *sa) { return (if_delmulti_common(NULL, ifp, sa, 1)); } /* * Delete a multicast group membership by network-layer group address. * * Returns ENOENT if the entry could not be found. */ static int if_delmulti_common(struct ifmultiaddr *ifma, struct ifnet *ifp, const struct sockaddr *sa, int anon) { struct sockaddr *dupsa = NULL; int lastref, ll_lastref = 0, lladdr; struct ifmultiaddr *ll = NULL; /* sanity check for callers */ VERIFY(ifma != NULL || (ifp != NULL && sa != NULL)); if (ifma != NULL) ifp = ifma->ifma_ifp; if (sa != NULL && (sa->sa_family == AF_LINK || sa->sa_family == AF_UNSPEC)) { dupsa = copy_and_normalize(sa); if (dupsa == NULL) return (ENOMEM); sa = dupsa; } ifnet_lock_exclusive(ifp); if (ifma == NULL) { for (ifma = LIST_FIRST(&ifp->if_multiaddrs); ifma != NULL; ifma = LIST_NEXT(ifma, ifma_link)) { IFMA_LOCK(ifma); if (!ifa_equal(sa, ifma->ifma_addr) || (anon && !(ifma->ifma_flags & IFMAF_ANONYMOUS))) { VERIFY(!(ifma->ifma_flags & IFMAF_ANONYMOUS) || ifma->ifma_anoncnt != 0); IFMA_UNLOCK(ifma); continue; } /* found; keep it locked */ break; } if (ifma == NULL) { if (dupsa != NULL) FREE(dupsa, M_IFADDR); ifnet_lock_done(ifp); return (ENOENT); } } else { IFMA_LOCK(ifma); } IFMA_LOCK_ASSERT_HELD(ifma); IFMA_ADDREF_LOCKED(ifma); /* for this routine */ lastref = if_detach_ifma(ifp, ifma, anon); VERIFY(!lastref || (!(ifma->ifma_debug & IFD_ATTACHED) && ifma->ifma_reqcnt == 0)); VERIFY(!anon || ifma->ifma_ll == NULL); ll = ifma->ifma_ll; lladdr = (ifma->ifma_addr->sa_family == AF_UNSPEC || ifma->ifma_addr->sa_family == AF_LINK); IFMA_UNLOCK(ifma); if (lastref && ll != NULL) { IFMA_LOCK(ll); ll_lastref = if_detach_ifma(ifp, ll, 0); IFMA_UNLOCK(ll); } ifnet_lock_done(ifp); if (lastref) rt_newmaddrmsg(RTM_DELMADDR, ifma); if ((ll == NULL && lastref && lladdr) || ll_lastref) { /* * Make sure the interface driver is notified in the * case of a link layer mcast group being left. Do * this only for a AF_LINK/AF_UNSPEC address that has * been removed from the if_multiaddrs set. */ ifnet_ioctl(ifp, 0, SIOCDELMULTI, NULL); } if (lastref) IFMA_REMREF(ifma); /* for if_multiaddrs list */ if (ll_lastref) IFMA_REMREF(ll); /* for if_multiaddrs list */ IFMA_REMREF(ifma); /* for this routine */ if (dupsa != NULL) FREE(dupsa, M_IFADDR); return (0); } /* * Shutdown all network activity. Used boot() when halting * system. */ int if_down_all(void) { struct ifnet **ifp; u_int32_t count; u_int32_t i; if (ifnet_list_get_all(IFNET_FAMILY_ANY, &ifp, &count) == 0) { for (i = 0; i < count; i++) { if_down(ifp[i]); dlil_proto_unplumb_all(ifp[i]); } ifnet_list_free(ifp); } return (0); } /* * Delete Routes for a Network Interface * * Called for each routing entry via the rnh->rnh_walktree() call above * to delete all route entries referencing a detaching network interface. * * Arguments: * rn pointer to node in the routing table * arg argument passed to rnh->rnh_walktree() - detaching interface * * Returns: * 0 successful * errno failed - reason indicated * */ static int if_rtdel(struct radix_node *rn, void *arg) { struct rtentry *rt = (struct rtentry *)rn; struct ifnet *ifp = arg; int err; if (rt == NULL) return (0); /* * Checking against RTF_UP protects against walktree * recursion problems with cloned routes. */ RT_LOCK(rt); if (rt->rt_ifp == ifp && (rt->rt_flags & RTF_UP)) { /* * Safe to drop rt_lock and use rt_key, rt_gateway, * since holding rnh_lock here prevents another thread * from calling rt_setgate() on this route. */ RT_UNLOCK(rt); err = rtrequest_locked(RTM_DELETE, rt_key(rt), rt->rt_gateway, rt_mask(rt), rt->rt_flags, NULL); if (err) { log(LOG_WARNING, "if_rtdel: error %d\n", err); } } else { RT_UNLOCK(rt); } return (0); } /* * Removes routing table reference to a given interface * for a given protocol family */ void if_rtproto_del(struct ifnet *ifp, int protocol) { struct radix_node_head *rnh; if ((protocol <= AF_MAX) && (protocol >= 0) && ((rnh = rt_tables[protocol]) != NULL) && (ifp != NULL)) { lck_mtx_lock(rnh_lock); (void) rnh->rnh_walktree(rnh, if_rtdel, ifp); lck_mtx_unlock(rnh_lock); } } static int if_rtmtu(struct radix_node *rn, void *arg) { struct rtentry *rt = (struct rtentry *)rn; struct ifnet *ifp = arg; RT_LOCK(rt); if (rt->rt_ifp == ifp) { /* * Update the MTU of this entry only if the MTU * has not been locked (RTV_MTU is not set) and * if it was non-zero to begin with. */ if (!(rt->rt_rmx.rmx_locks & RTV_MTU) && rt->rt_rmx.rmx_mtu) rt->rt_rmx.rmx_mtu = ifp->if_mtu; } RT_UNLOCK(rt); return (0); } /* * Update the MTU metric of all route entries in all protocol tables * associated with a particular interface; this is called when the * MTU of that interface has changed. */ static void if_rtmtu_update(struct ifnet *ifp) { struct radix_node_head *rnh; int p; for (p = 0; p < AF_MAX + 1; p++) { if ((rnh = rt_tables[p]) == NULL) continue; lck_mtx_lock(rnh_lock); (void) rnh->rnh_walktree(rnh, if_rtmtu, ifp); lck_mtx_unlock(rnh_lock); } routegenid_update(); } __private_extern__ void if_data_internal_to_if_data(struct ifnet *ifp, const struct if_data_internal *if_data_int, struct if_data *if_data) { #pragma unused(ifp) #define COPYFIELD(fld) if_data->fld = if_data_int->fld #define COPYFIELD32(fld) if_data->fld = (u_int32_t)(if_data_int->fld) /* compiler will cast down to 32-bit */ #define COPYFIELD32_ATOMIC(fld) do { \ atomic_get_64(if_data->fld, \ (u_int64_t *)(void *)(uintptr_t)&if_data_int->fld); \ } while (0) COPYFIELD(ifi_type); COPYFIELD(ifi_typelen); COPYFIELD(ifi_physical); COPYFIELD(ifi_addrlen); COPYFIELD(ifi_hdrlen); COPYFIELD(ifi_recvquota); COPYFIELD(ifi_xmitquota); if_data->ifi_unused1 = 0; COPYFIELD(ifi_mtu); COPYFIELD(ifi_metric); if (if_data_int->ifi_baudrate & 0xFFFFFFFF00000000LL) { if_data->ifi_baudrate = 0xFFFFFFFF; } else { COPYFIELD32(ifi_baudrate); } COPYFIELD32_ATOMIC(ifi_ipackets); COPYFIELD32_ATOMIC(ifi_ierrors); COPYFIELD32_ATOMIC(ifi_opackets); COPYFIELD32_ATOMIC(ifi_oerrors); COPYFIELD32_ATOMIC(ifi_collisions); COPYFIELD32_ATOMIC(ifi_ibytes); COPYFIELD32_ATOMIC(ifi_obytes); COPYFIELD32_ATOMIC(ifi_imcasts); COPYFIELD32_ATOMIC(ifi_omcasts); COPYFIELD32_ATOMIC(ifi_iqdrops); COPYFIELD32_ATOMIC(ifi_noproto); COPYFIELD(ifi_recvtiming); COPYFIELD(ifi_xmittiming); if_data->ifi_lastchange.tv_sec = if_data_int->ifi_lastchange.tv_sec; if_data->ifi_lastchange.tv_usec = if_data_int->ifi_lastchange.tv_usec; if_data->ifi_lastchange.tv_sec += boottime_sec(); if_data->ifi_unused2 = 0; COPYFIELD(ifi_hwassist); if_data->ifi_reserved1 = 0; if_data->ifi_reserved2 = 0; #undef COPYFIELD32_ATOMIC #undef COPYFIELD32 #undef COPYFIELD } __private_extern__ void if_data_internal_to_if_data64(struct ifnet *ifp, const struct if_data_internal *if_data_int, struct if_data64 *if_data64) { #pragma unused(ifp) #define COPYFIELD64(fld) if_data64->fld = if_data_int->fld #define COPYFIELD64_ATOMIC(fld) do { \ atomic_get_64(if_data64->fld, \ (u_int64_t *)(void *)(uintptr_t)&if_data_int->fld); \ } while (0) COPYFIELD64(ifi_type); COPYFIELD64(ifi_typelen); COPYFIELD64(ifi_physical); COPYFIELD64(ifi_addrlen); COPYFIELD64(ifi_hdrlen); COPYFIELD64(ifi_recvquota); COPYFIELD64(ifi_xmitquota); if_data64->ifi_unused1 = 0; COPYFIELD64(ifi_mtu); COPYFIELD64(ifi_metric); COPYFIELD64(ifi_baudrate); COPYFIELD64_ATOMIC(ifi_ipackets); COPYFIELD64_ATOMIC(ifi_ierrors); COPYFIELD64_ATOMIC(ifi_opackets); COPYFIELD64_ATOMIC(ifi_oerrors); COPYFIELD64_ATOMIC(ifi_collisions); COPYFIELD64_ATOMIC(ifi_ibytes); COPYFIELD64_ATOMIC(ifi_obytes); COPYFIELD64_ATOMIC(ifi_imcasts); COPYFIELD64_ATOMIC(ifi_omcasts); COPYFIELD64_ATOMIC(ifi_iqdrops); COPYFIELD64_ATOMIC(ifi_noproto); /* * Note these two fields are actually 32 bit, so doing * COPYFIELD64_ATOMIC will cause them to be misaligned */ COPYFIELD64(ifi_recvtiming); COPYFIELD64(ifi_xmittiming); if_data64->ifi_lastchange.tv_sec = if_data_int->ifi_lastchange.tv_sec; if_data64->ifi_lastchange.tv_usec = if_data_int->ifi_lastchange.tv_usec; if_data64->ifi_lastchange.tv_sec += boottime_sec(); #undef COPYFIELD64 } __private_extern__ void if_copy_traffic_class(struct ifnet *ifp, struct if_traffic_class *if_tc) { #define COPY_IF_TC_FIELD64_ATOMIC(fld) do { \ atomic_get_64(if_tc->fld, \ (u_int64_t *)(void *)(uintptr_t)&ifp->if_tc.fld); \ } while (0) bzero(if_tc, sizeof (*if_tc)); COPY_IF_TC_FIELD64_ATOMIC(ifi_ibepackets); COPY_IF_TC_FIELD64_ATOMIC(ifi_ibebytes); COPY_IF_TC_FIELD64_ATOMIC(ifi_obepackets); COPY_IF_TC_FIELD64_ATOMIC(ifi_obebytes); COPY_IF_TC_FIELD64_ATOMIC(ifi_ibkpackets); COPY_IF_TC_FIELD64_ATOMIC(ifi_ibkbytes); COPY_IF_TC_FIELD64_ATOMIC(ifi_obkpackets); COPY_IF_TC_FIELD64_ATOMIC(ifi_obkbytes); COPY_IF_TC_FIELD64_ATOMIC(ifi_ivipackets); COPY_IF_TC_FIELD64_ATOMIC(ifi_ivibytes); COPY_IF_TC_FIELD64_ATOMIC(ifi_ovipackets); COPY_IF_TC_FIELD64_ATOMIC(ifi_ovibytes); COPY_IF_TC_FIELD64_ATOMIC(ifi_ivopackets); COPY_IF_TC_FIELD64_ATOMIC(ifi_ivobytes); COPY_IF_TC_FIELD64_ATOMIC(ifi_ovopackets); COPY_IF_TC_FIELD64_ATOMIC(ifi_ovobytes); COPY_IF_TC_FIELD64_ATOMIC(ifi_ipvpackets); COPY_IF_TC_FIELD64_ATOMIC(ifi_ipvbytes); COPY_IF_TC_FIELD64_ATOMIC(ifi_opvpackets); COPY_IF_TC_FIELD64_ATOMIC(ifi_opvbytes); #undef COPY_IF_TC_FIELD64_ATOMIC } void if_copy_data_extended(struct ifnet *ifp, struct if_data_extended *if_de) { #define COPY_IF_DE_FIELD64_ATOMIC(fld) do { \ atomic_get_64(if_de->fld, \ (u_int64_t *)(void *)(uintptr_t)&ifp->if_data.fld); \ } while (0) bzero(if_de, sizeof (*if_de)); COPY_IF_DE_FIELD64_ATOMIC(ifi_alignerrs); COPY_IF_DE_FIELD64_ATOMIC(ifi_dt_bytes); COPY_IF_DE_FIELD64_ATOMIC(ifi_fpackets); COPY_IF_DE_FIELD64_ATOMIC(ifi_fbytes); #undef COPY_IF_DE_FIELD64_ATOMIC } void if_copy_packet_stats(struct ifnet *ifp, struct if_packet_stats *if_ps) { #define COPY_IF_PS_TCP_FIELD64_ATOMIC(fld) do { \ atomic_get_64(if_ps->ifi_tcp_##fld, \ (u_int64_t *)(void *)(uintptr_t)&ifp->if_tcp_stat->fld); \ } while (0) #define COPY_IF_PS_UDP_FIELD64_ATOMIC(fld) do { \ atomic_get_64(if_ps->ifi_udp_##fld, \ (u_int64_t *)(void *)(uintptr_t)&ifp->if_udp_stat->fld); \ } while (0) COPY_IF_PS_TCP_FIELD64_ATOMIC(badformat); COPY_IF_PS_TCP_FIELD64_ATOMIC(unspecv6); COPY_IF_PS_TCP_FIELD64_ATOMIC(synfin); COPY_IF_PS_TCP_FIELD64_ATOMIC(badformatipsec); COPY_IF_PS_TCP_FIELD64_ATOMIC(noconnnolist); COPY_IF_PS_TCP_FIELD64_ATOMIC(noconnlist); COPY_IF_PS_TCP_FIELD64_ATOMIC(listbadsyn); COPY_IF_PS_TCP_FIELD64_ATOMIC(icmp6unreach); COPY_IF_PS_TCP_FIELD64_ATOMIC(deprecate6); COPY_IF_PS_TCP_FIELD64_ATOMIC(ooopacket); COPY_IF_PS_TCP_FIELD64_ATOMIC(rstinsynrcv); COPY_IF_PS_TCP_FIELD64_ATOMIC(dospacket); COPY_IF_PS_TCP_FIELD64_ATOMIC(cleanup); COPY_IF_PS_TCP_FIELD64_ATOMIC(synwindow); COPY_IF_PS_UDP_FIELD64_ATOMIC(port_unreach); COPY_IF_PS_UDP_FIELD64_ATOMIC(faithprefix); COPY_IF_PS_UDP_FIELD64_ATOMIC(port0); COPY_IF_PS_UDP_FIELD64_ATOMIC(badlength); COPY_IF_PS_UDP_FIELD64_ATOMIC(badchksum); COPY_IF_PS_UDP_FIELD64_ATOMIC(badmcast); COPY_IF_PS_UDP_FIELD64_ATOMIC(cleanup); COPY_IF_PS_UDP_FIELD64_ATOMIC(badipsec); #undef COPY_IF_PS_TCP_FIELD64_ATOMIC #undef COPY_IF_PS_UDP_FIELD64_ATOMIC } void if_copy_rxpoll_stats(struct ifnet *ifp, struct if_rxpoll_stats *if_rs) { bzero(if_rs, sizeof (*if_rs)); if (!(ifp->if_eflags & IFEF_RXPOLL) || !ifnet_is_attached(ifp, 1)) return; /* by now, ifnet will stay attached so if_inp must be valid */ VERIFY(ifp->if_inp != NULL); bcopy(&ifp->if_inp->pstats, if_rs, sizeof (*if_rs)); /* Release the IO refcnt */ ifnet_decr_iorefcnt(ifp); } struct ifaddr * ifa_remref(struct ifaddr *ifa, int locked) { if (!locked) IFA_LOCK_SPIN(ifa); else IFA_LOCK_ASSERT_HELD(ifa); if (ifa->ifa_refcnt == 0) panic("%s: ifa %p negative refcnt\n", __func__, ifa); else if (ifa->ifa_trace != NULL) (*ifa->ifa_trace)(ifa, FALSE); if (--ifa->ifa_refcnt == 0) { if (ifa->ifa_debug & IFD_ATTACHED) panic("ifa %p attached to ifp is being freed\n", ifa); /* * Some interface addresses are allocated either statically * or carved out of a larger block. Only free it if it was * allocated via MALLOC or via the corresponding per-address * family allocator. Otherwise, leave it alone. */ if (ifa->ifa_debug & IFD_ALLOC) { if (ifa->ifa_free == NULL) { IFA_UNLOCK(ifa); FREE(ifa, M_IFADDR); } else { /* Become a regular mutex */ IFA_CONVERT_LOCK(ifa); /* callee will unlock */ (*ifa->ifa_free)(ifa); } } else { IFA_UNLOCK(ifa); } ifa = NULL; } if (!locked && ifa != NULL) IFA_UNLOCK(ifa); return (ifa); } void ifa_addref(struct ifaddr *ifa, int locked) { if (!locked) IFA_LOCK_SPIN(ifa); else IFA_LOCK_ASSERT_HELD(ifa); if (++ifa->ifa_refcnt == 0) { panic("%s: ifa %p wraparound refcnt\n", __func__, ifa); /* NOTREACHED */ } else if (ifa->ifa_trace != NULL) { (*ifa->ifa_trace)(ifa, TRUE); } if (!locked) IFA_UNLOCK(ifa); } void ifa_lock_init(struct ifaddr *ifa) { lck_mtx_init(&ifa->ifa_lock, ifa_mtx_grp, ifa_mtx_attr); } void ifa_lock_destroy(struct ifaddr *ifa) { IFA_LOCK_ASSERT_NOTHELD(ifa); lck_mtx_destroy(&ifa->ifa_lock, ifa_mtx_grp); } /* * 'i' group ioctls. * * The switch statement below does nothing at runtime, as it serves as a * compile time check to ensure that all of the socket 'i' ioctls (those * in the 'i' group going thru soo_ioctl) that are made available by the * networking stack is unique. This works as long as this routine gets * updated each time a new interface ioctl gets added. * * Any failures at compile time indicates duplicated ioctl values. */ static __attribute__((unused)) void ifioctl_cassert(void) { /* * This is equivalent to _CASSERT() and the compiler wouldn't * generate any instructions, thus for compile time only. */ switch ((u_long)0) { case 0: /* bsd/net/if_ppp.h */ case SIOCGPPPSTATS: case SIOCGPPPCSTATS: #if INET6 /* bsd/netinet6/in6_var.h */ case SIOCSIFADDR_IN6: case SIOCGIFADDR_IN6: case SIOCSIFDSTADDR_IN6: case SIOCSIFNETMASK_IN6: case SIOCGIFDSTADDR_IN6: case SIOCGIFNETMASK_IN6: case SIOCDIFADDR_IN6: case SIOCAIFADDR_IN6_32: case SIOCAIFADDR_IN6_64: case SIOCSIFPHYADDR_IN6_32: case SIOCSIFPHYADDR_IN6_64: case SIOCGIFPSRCADDR_IN6: case SIOCGIFPDSTADDR_IN6: case SIOCGIFAFLAG_IN6: case SIOCGDRLST_IN6_32: case SIOCGDRLST_IN6_64: case SIOCGPRLST_IN6_32: case SIOCGPRLST_IN6_64: case OSIOCGIFINFO_IN6: case SIOCGIFINFO_IN6: case SIOCSNDFLUSH_IN6: case SIOCGNBRINFO_IN6_32: case SIOCGNBRINFO_IN6_64: case SIOCSPFXFLUSH_IN6: case SIOCSRTRFLUSH_IN6: case SIOCGIFALIFETIME_IN6: case SIOCSIFALIFETIME_IN6: case SIOCGIFSTAT_IN6: case SIOCGIFSTAT_ICMP6: case SIOCSDEFIFACE_IN6_32: case SIOCSDEFIFACE_IN6_64: case SIOCGDEFIFACE_IN6_32: case SIOCGDEFIFACE_IN6_64: case SIOCSIFINFO_FLAGS: case SIOCSSCOPE6: case SIOCGSCOPE6: case SIOCGSCOPE6DEF: case SIOCSIFPREFIX_IN6: case SIOCGIFPREFIX_IN6: case SIOCDIFPREFIX_IN6: case SIOCAIFPREFIX_IN6: case SIOCCIFPREFIX_IN6: case SIOCSGIFPREFIX_IN6: case SIOCPROTOATTACH_IN6_32: case SIOCPROTOATTACH_IN6_64: case SIOCPROTODETACH_IN6: case SIOCLL_START_32: case SIOCLL_START_64: case SIOCLL_STOP: case SIOCAUTOCONF_START: case SIOCAUTOCONF_STOP: case SIOCSETROUTERMODE_IN6: case SIOCLL_CGASTART_32: case SIOCLL_CGASTART_64: case SIOCGIFCGAPREP_IN6: case SIOCSIFCGAPREP_IN6: #endif /* INET6 */ /* bsd/sys/sockio.h */ case SIOCSIFADDR: case OSIOCGIFADDR: case SIOCSIFDSTADDR: case OSIOCGIFDSTADDR: case SIOCSIFFLAGS: case SIOCGIFFLAGS: case OSIOCGIFBRDADDR: case SIOCSIFBRDADDR: case OSIOCGIFCONF32: case OSIOCGIFCONF64: case OSIOCGIFNETMASK: case SIOCSIFNETMASK: case SIOCGIFMETRIC: case SIOCSIFMETRIC: case SIOCDIFADDR: case SIOCAIFADDR: case SIOCGIFADDR: case SIOCGIFDSTADDR: case SIOCGIFBRDADDR: case SIOCGIFCONF32: case SIOCGIFCONF64: case SIOCGIFNETMASK: case SIOCAUTOADDR: case SIOCAUTONETMASK: case SIOCARPIPLL: case SIOCADDMULTI: case SIOCDELMULTI: case SIOCGIFMTU: case SIOCSIFMTU: case SIOCGIFPHYS: case SIOCSIFPHYS: case SIOCSIFMEDIA: case SIOCGIFMEDIA32: case SIOCGIFMEDIA64: case SIOCSIFGENERIC: case SIOCGIFGENERIC: case SIOCRSLVMULTI: case SIOCSIFLLADDR: case SIOCGIFSTATUS: case SIOCSIFPHYADDR: case SIOCGIFPSRCADDR: case SIOCGIFPDSTADDR: case SIOCDIFPHYADDR: case SIOCGIFDEVMTU: case SIOCSIFALTMTU: case SIOCGIFALTMTU: case SIOCSIFBOND: case SIOCGIFBOND: case SIOCPROTOATTACH: case SIOCPROTODETACH: case SIOCSIFCAP: case SIOCGIFCAP: case SIOCIFCREATE: case SIOCIFDESTROY: case SIOCIFCREATE2: case SIOCSDRVSPEC32: case SIOCGDRVSPEC32: case SIOCSDRVSPEC64: case SIOCGDRVSPEC64: case SIOCSIFVLAN: case SIOCGIFVLAN: case SIOCIFGCLONERS32: case SIOCIFGCLONERS64: case SIOCGIFASYNCMAP: case SIOCSIFASYNCMAP: #if CONFIG_MACF_NET case SIOCGIFMAC: case SIOCSIFMAC: #endif /* CONFIG_MACF_NET */ case SIOCSIFKPI: case SIOCGIFKPI: case SIOCGIFWAKEFLAGS: case SIOCGIFGETRTREFCNT: case SIOCGIFLINKQUALITYMETRIC: case SIOCSIFOPPORTUNISTIC: case SIOCGIFOPPORTUNISTIC: case SIOCSETROUTERMODE: case SIOCGIFEFLAGS: case SIOCSIFDESC: case SIOCGIFDESC: case SIOCSIFLINKPARAMS: case SIOCGIFLINKPARAMS: case SIOCGIFQUEUESTATS: case SIOCSIFTHROTTLE: case SIOCGIFTHROTTLE: case SIOCGASSOCIDS32: case SIOCGASSOCIDS64: case SIOCGCONNIDS32: case SIOCGCONNIDS64: case SIOCGCONNINFO32: case SIOCGCONNINFO64: case SIOCSCONNORDER: case SIOCGCONNORDER: case SIOCSIFLOG: case SIOCGIFLOG: case SIOCGIFDELEGATE: case SIOCGIFLLADDR: case SIOCGIFTYPE: case SIOCGIFEXPENSIVE: case SIOCSIFEXPENSIVE: case SIOCGIF2KCL: case SIOCSIF2KCL: case SIOCGSTARTDELAY: case SIOCAIFAGENTID: case SIOCDIFAGENTID: case SIOCGIFAGENTIDS32: case SIOCGIFAGENTIDS64: case SIOCGIFAGENTDATA32: case SIOCGIFAGENTDATA64: case SIOCGIFAGENTLIST32: case SIOCGIFAGENTLIST64: case SIOCSIFINTERFACESTATE: case SIOCGIFINTERFACESTATE: case SIOCSIFPROBECONNECTIVITY: case SIOCGIFPROBECONNECTIVITY: case SIOCGIFFUNCTIONALTYPE: case SIOCSIFNETSIGNATURE: case SIOCGIFNETSIGNATURE: case SIOCGECNMODE: case SIOCSECNMODE: case SIOCSQOSMARKINGMODE: case SIOCSQOSMARKINGENABLED: case SIOCGQOSMARKINGMODE: case SIOCGQOSMARKINGENABLED: case SIOCGIFPROTOLIST32: case SIOCGIFPROTOLIST64: ; } } uint32_t ifnet_mbuf_packetpreamblelen(struct ifnet *ifp) { #pragma unused(ifp) return (0); } /* The following is used to enqueue work items for interface events */ struct intf_event { struct ifnet *ifp; union sockaddr_in_4_6 addr; uint32_t intf_event_code; }; static void intf_event_callback(void *arg) { struct intf_event *p_intf_ev = (struct intf_event *)arg; /* Call this before we walk the tree */ EVENTHANDLER_INVOKE(&ifnet_evhdlr_ctxt, ifnet_event, p_intf_ev->ifp, (struct sockaddr *)&(p_intf_ev->addr), p_intf_ev->intf_event_code); } struct intf_event_nwk_wq_entry { struct nwk_wq_entry nwk_wqe; struct intf_event intf_ev_arg; }; void intf_event_enqueue_nwk_wq_entry(struct ifnet *ifp, struct sockaddr *addrp, uint32_t intf_event_code) { #pragma unused(addrp) struct intf_event_nwk_wq_entry *p_intf_ev = NULL; MALLOC(p_intf_ev, struct intf_event_nwk_wq_entry *, sizeof(struct intf_event_nwk_wq_entry), M_NWKWQ, M_WAITOK | M_ZERO); p_intf_ev->intf_ev_arg.ifp = ifp; /* * XXX Not using addr in the arg. This will be used * once we need IP address add/delete events */ p_intf_ev->intf_ev_arg.intf_event_code = intf_event_code; p_intf_ev->nwk_wqe.func = intf_event_callback; p_intf_ev->nwk_wqe.is_arg_managed = TRUE; p_intf_ev->nwk_wqe.arg = &p_intf_ev->intf_ev_arg; nwk_wq_enqueue((struct nwk_wq_entry*)p_intf_ev); } |