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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_media.h> #include <net/if_ppp.h> #include <net/ethernet.h> #include <net/network_agent.h> #include <net/pktsched/pktsched_netem.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 #include <netinet/in.h> #include <netinet/in_var.h> #include <netinet/in_tclass.h> #include <netinet/ip_var.h> #include <netinet/ip.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> #include <netinet6/in6_var.h> #include <netinet6/in6_ifattach.h> #include <netinet6/ip6_var.h> #include <netinet6/nd6.h> #endif /* INET */ #if SKYWALK #include <skywalk/nexus/netif/nx_netif.h> #endif /* SKYWALK */ #include <net/sockaddr_utils.h> #include <os/log.h> #include <IOKit/IOBSD.h> /* * System initialization */ extern char *proc_name_address(void *); /* Lock group and attribute for ifaddr lock */ LCK_ATTR_DECLARE(ifa_mtx_attr, 0, 0); LCK_GRP_DECLARE(ifa_mtx_grp, "ifaddr"); 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(zalloc_flags_t); static void ifma_free(struct ifmultiaddr *); static void ifma_trace(struct ifmultiaddr *, int); #if DEBUG static TUNABLE(bool, ifma_debug, "ifma_debug", true); /* debugging (enabled) */ #else static TUNABLE(bool, ifma_debug, "ifma_debug", false); /* debugging (disabled) */ #endif /* !DEBUG */ 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 LCK_MTX_DECLARE_ATTR(ifma_trash_lock, &ifa_mtx_grp, &ifa_mtx_attr); #define IFMA_ZONE_MAX 64 /* maximum elements in zone */ #define IFMA_ZONE_NAME "ifmultiaddr" /* zone name */ /* * XXX: declare here to avoid to include many inet6 related files.. * should be more generalized? */ extern void nd6_setmtu(struct ifnet *); 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, ""); #if (DEBUG || DEVELOPMENT) static uint32_t default_tcp_kao_max = 0; SYSCTL_INT(_net_link_generic_system, OID_AUTO, default_tcp_kao_max, CTLFLAG_RW | CTLFLAG_LOCKED, &default_tcp_kao_max, 0, ""); #else static const uint32_t default_tcp_kao_max = 0; #endif /* (DEBUG || DEVELOPMENT) */ u_int32_t companion_link_sock_buffer_limit = 0; static int sysctl_set_companion_link_sock_buf_limit SYSCTL_HANDLER_ARGS { #pragma unused(arg1, arg2) int error, tmp = companion_link_sock_buffer_limit; error = sysctl_handle_int(oidp, &tmp, 0, req); if (tmp < 0) { return EINVAL; } if ((error = priv_check_cred(kauth_cred_get(), PRIV_NET_INTERFACE_CONTROL, 0)) != 0) { return error; } u_int32_t new_limit = tmp; if (new_limit == companion_link_sock_buffer_limit) { return 0; } bool recover = new_limit == 0 ? true : false; if (recover) { error = inp_recover_companion_link(&tcbinfo); } else { error = inp_limit_companion_link(&tcbinfo, new_limit); } if (!error) { companion_link_sock_buffer_limit = new_limit; } return error; } SYSCTL_PROC(_net_link_generic_system, OID_AUTO, companion_sndbuf_limit, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED | CTLFLAG_ANYBODY, &companion_link_sock_buffer_limit, 0, sysctl_set_companion_link_sock_buf_limit, "I", "set sock send buffer limit of connections using companion links"); TUNABLE(bool, intcoproc_unrestricted, "intcoproc_unrestricted", false); SYSCTL_NODE(_net_link_generic_system, OID_AUTO, management, CTLFLAG_RW | CTLFLAG_LOCKED, 0, "management interface"); TUNABLE_WRITEABLE(int, if_management_verbose, "management_data_unrestricted", 0); SYSCTL_INT(_net_link_generic_system_management, OID_AUTO, verbose, CTLFLAG_RW | CTLFLAG_LOCKED, &if_management_verbose, 0, ""); /* * boot-args to disable entitlement check for data transfer on management interface */ TUNABLE_DEV_WRITEABLE(bool, management_data_unrestricted, "management_data_unrestricted", false); #if DEBUG || DEVELOPMENT #define MANAGEMENT_CTLFLAG_ACCESS CTLFLAG_RW #else #define MANAGEMENT_CTLFLAG_ACCESS CTLFLAG_RD #endif static int sysctl_management_data_unrestricted SYSCTL_HANDLER_ARGS { #pragma unused(oidp, arg1, arg2) int val = management_data_unrestricted; int error = sysctl_handle_int(oidp, &val, 0, req); #if DEBUG || DEVELOPMENT if (error == 0 && req->newptr != USER_ADDR_NULL) { management_data_unrestricted = (val == 0) ? false : true; if (if_management_verbose > 0) { os_log(OS_LOG_DEFAULT, "sysctl_management_data_unrestricted val %d -> management_data_unrestricted %d", val, management_data_unrestricted); } } #endif /* DEBUG || DEVELOPMENT */ return error; } SYSCTL_PROC(_net_link_generic_system_management, OID_AUTO, data_unrestricted, CTLTYPE_INT | MANAGEMENT_CTLFLAG_ACCESS | CTLFLAG_LOCKED, 0, 0, sysctl_management_data_unrestricted, "I", ""); /* * boot-args to disable entitlement restrictions to control management interfaces */ TUNABLE_DEV_WRITEABLE(bool, management_control_unrestricted, "management_control_unrestricted", false); static int sysctl_management_control_unrestricted SYSCTL_HANDLER_ARGS { #pragma unused(oidp, arg1, arg2) int val = management_control_unrestricted; int error = sysctl_handle_int(oidp, &val, 0, req); #if DEBUG || DEVELOPMENT if (error == 0 && req->newptr != USER_ADDR_NULL) { management_control_unrestricted = (val == 0) ? false : true; if (if_management_verbose > 0) { os_log(OS_LOG_DEFAULT, "sysctl_management_control_unrestricted val %d -> management_control_unrestricted %d", val, management_control_unrestricted); } } #endif /* DEBUG || DEVELOPMENT */ return error; } SYSCTL_PROC(_net_link_generic_system_management, OID_AUTO, control_unrestricted, CTLTYPE_INT | MANAGEMENT_CTLFLAG_ACCESS | CTLFLAG_LOCKED, 0, 0, sysctl_management_control_unrestricted, "I", ""); #undef MANAGEMENT_CTLFLAG_ACCESS /* The following is set as soon as IFNET_SUBFAMILY_MANAGEMENT is used */ bool if_management_interface_check_needed = false; /* Eventhandler context for interface events */ struct eventhandler_lists_ctxt ifnet_evhdlr_ctxt; void ifa_init(void) { size_t ifma_size = (ifma_debug == 0) ? sizeof(struct ifmultiaddr) : sizeof(struct ifmultiaddr_dbg); ifma_zone = zone_create(IFMA_ZONE_NAME, ifma_size, ZC_NONE); TAILQ_INIT(&ifma_trash_head); } /* * Network interface utility routines. * * Routines with ifa_ifwith* names take sockaddr *'s as * parameters. */ int if_index; uint32_t ifindex2ifnetcount; 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(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 SKYWALK SK_NXS_MS_IF_ADDR_GENCNT_INC(ifp); #endif /* SKYWALK */ } __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); ifa->ifa_debug &= ~IFD_ATTACHED; ifa_remref(ifa); #if SKYWALK SK_NXS_MS_IF_ADDR_GENCNT_INC(ifp); #endif /* SKYWALK */ } #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; /* * Although we are returning an integer, * ifnet's if_index is a uint16_t which means * that's our upper bound. */ if (if_index >= UINT16_MAX) { return -1; } 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; size_t old_ifnet_size; old_ifnet_addrs = (caddr_t)ifnet_addrs; old_ifnet_size = (size_t)(2 * if_indexlim + 1); 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); new_ifnet_addrs = (caddr_t)kalloc_type(caddr_t, n, Z_WAITOK | Z_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(ifnet_addrs, new_ifnet_addrs, if_indexlim * sizeof(caddr_t)); bcopy(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; ifindex2ifnetcount = if_indexlim + 1; /* release the old data */ if (old_ifnet_addrs != NULL) { void *old_ifnet_addrs_p = (void *)old_ifnet_addrs; kfree_type(caddr_t, old_ifnet_size, old_ifnet_addrs_p); } } return new_index; } /* * Create a clone network interface. */ static int if_clone_create(char *name, int len, void *params) { struct if_clone *ifc; struct ifnet *ifp; 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. */ lck_mtx_lock(&ifc->ifc_mutex); again: if (wildcard) { while ((bytoff < ifc->ifc_bmlen) && (ifc->ifc_units[bytoff] == 0xff)) { bytoff++; } if (bytoff >= ifc->ifc_bmlen) { lck_mtx_lock(&ifc->ifc_mutex); return ENOSPC; } while ((ifc->ifc_units[bytoff] & (1 << bitoff)) != 0) { bitoff++; } unit = (bytoff << 3) + bitoff; } if (unit > ifc->ifc_maxunit) { lck_mtx_unlock(&ifc->ifc_mutex); return ENXIO; } err = (*ifc->ifc_create)(ifc, unit, params); if (err != 0) { if (wildcard && err == EBUSY) { bitoff++; goto again; } lck_mtx_unlock(&ifc->ifc_mutex); 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] |= (unsigned char)(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 */ } } lck_mtx_unlock(&ifc->ifc_mutex); ifp = ifunit(name); if (ifp != NULL) { if_set_eflags(ifp, IFEF_CLONE); } return 0; } /* * Destroy a clone network interface. */ static int if_clone_destroy(const char *name) { struct if_clone *ifc = NULL; struct ifnet *ifp = NULL; int bytoff, bitoff; u_int32_t unit; int error = 0; ifc = if_clone_lookup(name, &unit); if (ifc == NULL) { error = EINVAL; goto done; } if (unit < ifc->ifc_minifs) { error = EINVAL; goto done; } ifp = ifunit_ref(name); if (ifp == NULL) { error = ENXIO; goto done; } if ((ifp->if_eflags & IFEF_CLONE) == 0) { error = EOPNOTSUPP; goto done; } if (ifc->ifc_destroy == NULL) { error = EOPNOTSUPP; goto done; } lck_mtx_lock(&ifc->ifc_mutex); error = (*ifc->ifc_destroy)(ifp); if (error) { lck_mtx_unlock(&ifc->ifc_mutex); goto done; } /* 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); lck_mtx_unlock(&ifc->ifc_mutex); done: if (ifp != NULL) { ifnet_decr_iorefcnt(ifp); } return error; } /* * 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; LIST_FOREACH(ifc, &if_cloners, ifc_list) { if (strncmp(name, ifc->ifc_name, ifc->ifc_namelen) == 0) { cp = name + ifc->ifc_namelen; goto found_name; } } /* 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 = (unsigned char *)kalloc_data(len, Z_WAITOK | Z_ZERO); if (ifc->ifc_units == NULL) { return ENOBUFS; } ifc->ifc_bmlen = len; lck_mtx_init(&ifc->ifc_mutex, &ifnet_lock_group, &ifnet_lock_attr); 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] |= (unsigned char)(1 << bitoff); } return 0; } /* * Unregister a network interface cloner. */ void if_clone_detach(struct if_clone *ifc) { LIST_REMOVE(ifc, ifc_list); kfree_data(ifc->ifc_units, ifc->ifc_bmlen); lck_mtx_destroy(&ifc->ifc_mutex, &ifnet_lock_group); 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 (IFNET_IS_COMPANION_LINK(ifp)) { ret = IFRTYPE_FUNCTIONAL_COMPANIONLINK; } else if ((exclude_delegate && (ifp->if_family == IFNET_FAMILY_ETHERNET && 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 || (ifp->if_family == IFNET_FAMILY_ETHERNET && ifp->if_subfamily == IFNET_SUBFAMILY_SIMCELL))) || (!exclude_delegate && IFNET_IS_CELLULAR(ifp))) { ret = IFRTYPE_FUNCTIONAL_CELLULAR; } else if (IFNET_IS_INTCOPROC(ifp)) { ret = IFRTYPE_FUNCTIONAL_INTCOPROC; } else if (IFNET_IS_MANAGEMENT(ifp)) { ret = IFRTYPE_FUNCTIONAL_MANAGEMENT; } else if ((exclude_delegate && (ifp->if_family == IFNET_FAMILY_ETHERNET || ifp->if_family == IFNET_FAMILY_BOND || ifp->if_family == IFNET_FAMILY_VLAN || 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(&ia->ia_ifa); /* for caller */ IFA_UNLOCK(&ia->ia_ifa); break; } IFA_UNLOCK(&ia->ia_ifa); } lck_rw_done(&in_ifaddr_rwlock); return ia; } /* * 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); TAILQ_FOREACH(ia, IN6ADDR_HASH(addr6), ia6_hash) { 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(&ia->ia_ifa); /* for caller */ IFA_UNLOCK(&ia->ia_ifa); break; } IFA_UNLOCK(&ia->ia_ifa); } lck_rw_done(&in6_ifaddr_rwlock); return ia; } /* * 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(ifa); /* for caller */ IFA_UNLOCK(ifa); break; } IFA_UNLOCK(ifa); } ifnet_lock_done(ifp); return ifa; } inline boolean_t sa_equal(const struct sockaddr *sa1, const struct sockaddr *sa2) { if (!sa1 || !sa2) { return FALSE; } if (sa1->sa_len != sa2->sa_len) { return FALSE; } return SOCKADDR_CMP(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 (sa_equal(addr, ifa->ifa_addr)) { result = ifa; ifa_addref(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 && sa_equal(ifa->ifa_broadaddr, addr)) { result = ifa; ifa_addref(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*/ static struct ifaddr * ifa_ifwithdstaddr_ifp(const struct sockaddr *addr, struct ifnet * ifp) { struct ifaddr *ifa; struct ifaddr *result = NULL; if ((ifp->if_flags & IFF_POINTOPOINT) != 0) { 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 (sa_equal(addr, ifa->ifa_dstaddr)) { result = ifa; ifa_addref(ifa); /* for caller */ IFA_UNLOCK(ifa); break; } IFA_UNLOCK(ifa); } ifnet_lock_done(ifp); } return result; } struct ifaddr * ifa_ifwithdstaddr(const struct sockaddr *addr) { struct ifnet *ifp; struct ifaddr *result = NULL; ifnet_head_lock_shared(); for (ifp = ifnet_head.tqh_first; ifp && !result; ifp = ifp->if_link.tqe_next) { result = ifa_ifwithdstaddr_ifp(addr, ifp); } ifnet_head_done(); return result; } struct ifaddr * ifa_ifwithdstaddr_scoped(const struct sockaddr *addr, unsigned int ifscope) { struct ifnet *ifp; struct ifaddr *result = NULL; if (ifscope == IFSCOPE_NONE) { return ifa_ifwithdstaddr(addr); } ifnet_head_lock_shared(); if (ifscope <= (unsigned int)if_index) { ifp = ifindex2ifnet[ifscope]; if (ifp != NULL) { result = ifa_ifwithdstaddr_ifp(addr, 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 (sa_equal(addr, ifa->ifa_addr)) { result = ifa; ifa_addref(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 && sa_equal(ifa->ifa_broadaddr, addr)) { result = ifa; ifa_addref(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; const struct sockaddr_in6 *sock_addr = SIN6(addr); if (af != AF_INET && af != AF_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 = SDL(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; } } if (!in6_embedded_scope && af == AF_INET6 && IN6_IS_SCOPE_EMBED(&sock_addr->sin6_addr)) { VERIFY(ifscope != IFSCOPE_NONE); } /* * 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(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(ifa); /* for ifa_maybe */ ifa_maybe = ifa; } if (ifa->ifa_netmask == 0) { if (sa_equal(addr, ifa->ifa_addr) || sa_equal(addr, ifa->ifa_dstaddr)) { ifa_addref(ifa); /* for caller */ IFA_UNLOCK(ifa); break; } IFA_UNLOCK(ifa); continue; } if (ifp->if_flags & IFF_POINTOPOINT) { if (sa_equal(addr, ifa->ifa_dstaddr)) { ifa_addref(ifa); /* for caller */ IFA_UNLOCK(ifa); break; } } else { if (sa_equal(addr, ifa->ifa_addr)) { /* exact match */ ifa_addref(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(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) { u_int32_t eflags; int i; struct ifaddr **ifa; struct timespec tv; struct ifclassq *ifq; /* 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 */ eflags = if_set_eflags(ifp, IFEF_UPDOWNCHANGE); ASSERT((eflags & IFEF_UPDOWNCHANGE) == 0); /* Mark interface up or down */ if (up) { ifp->if_flags |= IFF_UP; } else { ifp->if_flags &= ~IFF_UP; } if (!ifnet_is_attached(ifp, 1)) { /* * The interface is not attached or is detaching, so * skip modifying any other state. */ os_log(OS_LOG_DEFAULT, "%s: %s is not attached", __func__, if_name(ifp)); } else { /* Drop the lock to notify addresses and route */ ifnet_lock_done(ifp); /* Inform all transmit queues about the new link state */ ifq = ifp->if_snd; ASSERT(ifq != NULL); IFCQ_LOCK(ifq); if_qflush_snd(ifp, true); ifnet_update_sndq(ifq, up ? CLASSQ_EV_LINK_UP : CLASSQ_EV_LINK_DOWN); IFCQ_UNLOCK(ifq); /* Inform protocols of changed interface state */ 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); ifnet_lock_exclusive(ifp); ifnet_touch_lastchange(ifp); ifnet_touch_lastupdown(ifp); ifnet_decr_iorefcnt(ifp); } if_clear_eflags(ifp, 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, struct ifclassq *ifq, bool ifq_locked) { lck_mtx_lock(&ifp->if_ref_lock); if ((ifp->if_refflags & IFRF_ATTACH_MASK) == 0) { lck_mtx_unlock(&ifp->if_ref_lock); return; } VERIFY(ifq != NULL); ifclassq_retain(ifq); lck_mtx_unlock(&ifp->if_ref_lock); if (!ifq_locked) { IFCQ_LOCK(ifq); } if (IFCQ_IS_ENABLED(ifq)) { fq_if_request_classq(ifq, CLASSQRQ_PURGE, NULL); } VERIFY(IFCQ_IS_EMPTY(ifq)); if (!ifq_locked) { IFCQ_UNLOCK(ifq); } ifclassq_release(&ifq); } void if_qflush_snd(struct ifnet *ifp, bool ifq_locked) { if_qflush(ifp, ifp->if_snd, ifq_locked); } 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; u_int32_t cnt = 0, len = 0; if ((ifp->if_refflags & IFRF_ATTACH_MASK) == 0) { return; } ifq = ifp->if_snd; VERIFY(ifq != NULL); VERIFY(sc == MBUF_SC_UNSPEC || MBUF_VALID_SC(sc)); VERIFY(flow != 0); if (!ifq_locked) { IFCQ_LOCK(ifq); } if (IFCQ_IS_ENABLED(ifq)) { cqrq_purge_sc_t req = { sc, flow, 0, 0 }; fq_if_request_classq(ifq, CLASSQRQ_PURGE_SC, &req); cnt = req.packets; len = req.bytes; } if (!ifq_locked) { IFCQ_UNLOCK(ifq); } if (packets != NULL) { *packets = cnt; } if (bytes != NULL) { *bytes = 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 = SDL(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, CAST_USER_ADDR_T(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, CAST_USER_ADDR_T(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; ASSERT(ifq != NULL); switch (cmd) { case SIOCSIFLINKPARAMS: { /* struct if_linkparamsreq */ struct tb_profile tb = { .rate = 0, .percent = 0, .depth = 0 }; if ((error = proc_suser(p)) != 0) { break; } #if SKYWALK error = kern_nexus_set_netif_input_tbr_rate(ifp, iflpr->iflpr_input_tbr_rate); if (error != 0) { break; } /* * Input netem is done at flowswitch, which is the entry point * of all traffic, when skywalk is enabled. */ error = kern_nexus_set_if_netem_params( kern_nexus_shared_controller(), ifp->if_nx_flowswitch.if_fsw_instance, &iflpr->iflpr_input_netem, sizeof(iflpr->iflpr_input_netem)); if (error != 0) { break; } #endif /* SKYWALK */ char netem_name[32]; (void) snprintf(netem_name, sizeof(netem_name), "if_output_netem_%s", if_name(ifp)); error = netem_config(&ifp->if_output_netem, netem_name, ifp, &iflpr->iflpr_output_netem, (void *)ifp, ifnet_enqueue_netem, NETEM_MAX_BATCH_SIZE); if (error != 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)); #if SKYWALK if (ifp->if_input_netem != NULL) { netem_get_params(ifp->if_input_netem, &iflpr->iflpr_input_netem); } #endif /* SKYWALK */ if (ifp->if_output_netem != NULL) { netem_get_params(ifp->if_output_netem, &iflpr->iflpr_output_netem); } 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; uint32_t ifqr_grp_idx = 0; 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_grp_idx, &ifqr_grp_idx, sizeof(ifqr_grp_idx)); bcopy(&ifqr->ifqr_len, &ifqr_len, sizeof(ifqr_len)); if (ifqr_grp_idx > FQ_IF_MAX_GROUPS) { return EINVAL; } error = ifclassq_getqstats(ifp->if_snd, (uint8_t)ifqr_grp_idx, 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 int if_add_netagent_locked(struct ifnet *ifp, uuid_t new_agent_uuid) { VERIFY(ifp != NULL); 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 = krealloc_data(ifp->if_agentids, sizeof(uuid_t) * ifp->if_agentcount, sizeof(uuid_t) * new_agent_count, Z_WAITOK | Z_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, CAST_USER_ADDR_T(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; if (if_verbose != 0) { os_log(OS_LOG_DEFAULT, "%s: count %u", __func__, count); } 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; } #if (DEBUG || DEVELOPMENT) static int ifnet_get_ordered_indices(u_int32_t *ordered_indices, uint32_t *count) { struct ifnet *ifp = NULL; int error = 0; uint32_t order_index = 0; ifnet_head_lock_exclusive(); if (*count < if_ordered_count) { ifnet_head_done(); return ENOBUFS; } TAILQ_FOREACH(ifp, &ifnet_ordered_head, if_ordered_link) { if (order_index >= if_ordered_count) { break; } ordered_indices[order_index++] = ifp->if_index; } *count = order_index; ifnet_head_done(); return error; } #endif /* (DEBUG || DEVELOPMENT) */ 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; break; case IFRTYPE_QOSMARKING_FASTLANE: case IFRTYPE_QOSMARKING_RFC4594: ifp->if_qosmarking_mode = mode; break; #if (DEBUG || DEVELOPMENT) case IFRTYPE_QOSMARKING_CUSTOM: ifp->if_qosmarking_mode = mode; break; #endif /* (DEBUG || DEVELOPMENT) */ 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, 0, FALSE); } return error; } static __attribute__((noinline)) int ifioctl_iforder(u_long cmd, caddr_t data) { int error = 0; u_int32_t *ordered_indices = NULL; size_t ordered_indices_length = 0; 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; } ordered_indices_length = ifo->ifo_count * sizeof(u_int32_t); if (ordered_indices_length > 0) { if (ifo->ifo_ordered_indices == USER_ADDR_NULL) { error = EINVAL; break; } ordered_indices = (u_int32_t *)kalloc_data(ordered_indices_length, Z_WAITOK); if (ordered_indices == NULL) { error = ENOMEM; break; } error = copyin(CAST_USER_ADDR_T(ifo->ifo_ordered_indices), 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); } else { // Clear the list error = ifnet_reset_order(NULL, 0); } break; } case SIOCGIFORDER: { #if (DEBUG || DEVELOPMENT) struct if_order *ifo = (struct if_order *)(void *)data; uint32_t count; if (ifo->ifo_ordered_indices == 0) { ifo->ifo_count = if_ordered_count; break; } count = ifo->ifo_count; if (count == 0) { error = EINVAL; break; } ordered_indices_length = count * sizeof(uint32_t); ordered_indices = (uint32_t *)kalloc_data(ordered_indices_length, Z_WAITOK | Z_ZERO); if (ordered_indices == NULL) { error = ENOMEM; break; } error = ifnet_get_ordered_indices(ordered_indices, &count); if (error == 0) { ifo->ifo_count = count; error = copyout((caddr_t)ordered_indices, CAST_USER_ADDR_T(ifo->ifo_ordered_indices), count * sizeof(uint32_t)); } #else /* (DEBUG || DEVELOPMENT) */ error = EOPNOTSUPP; #endif /* (DEBUG || DEVELOPMENT) */ break; } default: { VERIFY(0); /* NOTREACHED */ } } if (ordered_indices != NULL) { kfree_data(ordered_indices, ordered_indices_length); } return error; } static __attribute__((noinline)) int ifioctl_networkid(struct ifnet *ifp, caddr_t data) { struct if_netidreq *ifnetidr = (struct if_netidreq *)(void *)data; int error = 0; int len = ifnetidr->ifnetid_len; VERIFY(ifp != NULL); if (len > sizeof(ifnetidr->ifnetid)) { error = EINVAL; goto end; } if (len == 0) { bzero(&ifp->network_id, sizeof(ifp->network_id)); } else if (len > sizeof(ifp->network_id)) { error = EINVAL; goto end; } ifp->network_id_len = (uint8_t)len; bcopy(data, ifp->network_id, len); end: 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; } 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); if (error != 0) { ip6stat.ip6s_clat464_plat64_pfx_setfail++; } break; case SIOCGIFNAT64PREFIX: /* struct if_nat64req */ error = ifnet_get_nat64prefix(ifp, ifnat64->ifnat64_prefixes); if (error != 0) { ip6stat.ip6s_clat464_plat64_pfx_getfail++; } break; default: VERIFY(0); /* NOTREACHED */ } return error; } static __attribute__((noinline)) int ifioctl_clat46addr(struct ifnet *ifp, u_long cmd, caddr_t data) { struct if_clat46req *ifclat46 = (struct if_clat46req *)(void *)data; struct in6_ifaddr *ia6_clat = NULL; int error = 0; VERIFY(ifp != NULL); switch (cmd) { case SIOCGIFCLAT46ADDR: ia6_clat = in6ifa_ifpwithflag(ifp, IN6_IFF_CLAT46); if (ia6_clat == NULL) { error = ENOENT; break; } bcopy(&ia6_clat->ia_addr.sin6_addr, &ifclat46->ifclat46_addr.v6_address, sizeof(ifclat46->ifclat46_addr.v6_address)); ifclat46->ifclat46_addr.v6_prefixlen = ia6_clat->ia_plen; ifa_remref(&ia6_clat->ia_ifa); break; default: VERIFY(0); /* NOTREACHED */ } return error; } #if SKYWALK static __attribute__((noinline)) int ifioctl_nexus(struct ifnet *ifp, u_long cmd, caddr_t data) { int error = 0; struct if_nexusreq *ifnr = (struct if_nexusreq *)(void *)data; switch (cmd) { case SIOCGIFNEXUS: /* struct if_nexusreq */ if (ifnr->ifnr_flags != 0) { error = EINVAL; break; } error = kern_nexus_get_netif_instance(ifp, ifnr->ifnr_netif); if (error != 0) { break; } kern_nexus_get_flowswitch_instance(ifp, ifnr->ifnr_flowswitch); break; default: VERIFY(0); /* NOTREACHED */ } return error; } #endif /* SKYWALK */ 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 = (u_int32_t *)kalloc_data(count * sizeof(*list), Z_WAITOK | Z_ZERO); 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, CAST_USER_ADDR_T(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) { 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 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 SIOCGIFXMEDIA32: case SIOCGIFXMEDIA64: 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: #if SKYWALK case SIOCGIFNEXUS: #endif /* SKYWALK */ case SIOCGIFPROTOLIST32: case SIOCGIFPROTOLIST64: case SIOCGIFXFLAGS: case SIOCGIFNOTRAFFICSHAPING: case SIOCGIFGENERATIONID: case SIOCSIFDIRECTLINK: case SIOCGIFDIRECTLINK: 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; } static bool ifioctl_restrict_management(unsigned long cmd, const char *ifname, struct ifnet *ifp, struct proc *p) { if (if_management_interface_check_needed == false) { return false; } if (management_control_unrestricted) { return false; } if (proc_pid(p) == 0) { return false; } if (ifname) { ifp = ifunit(ifname); } if (ifp == NULL) { return false; } if (!IFNET_IS_MANAGEMENT(ifp)) { return false; } /* * Allow all the "get" ioctls */ switch (cmd) { case SIOCGHIWAT: case SIOCGLOWAT: case SIOCGPGRP: case SIOCGIFFLAGS: case SIOCGIFMETRIC: case SIOCGIFADDR: case SIOCGIFDSTADDR: case SIOCGIFBRDADDR: case SIOCGIFCONF32: case SIOCGIFCONF64: case SIOCGIFNETMASK: case SIOCGIFMTU: case SIOCGIFPHYS: case SIOCGIFMEDIA32: case SIOCGIFMEDIA64: case SIOCGIFGENERIC: case SIOCGIFSTATUS: case SIOCGIFPSRCADDR: case SIOCGIFPDSTADDR: case SIOCGIFDEVMTU: case SIOCGIFALTMTU: case SIOCGIFBOND: case SIOCGIFXMEDIA32: case SIOCGIFXMEDIA64: case SIOCGIFCAP: case SIOCGDRVSPEC32: case SIOCGDRVSPEC64: case SIOCGIFVLAN: case SIOCGIFASYNCMAP: case SIOCGIFMAC: case SIOCGIFKPI: case SIOCGIFWAKEFLAGS: case SIOCGIFGETRTREFCNT: case SIOCGIFLINKQUALITYMETRIC: case SIOCGIFOPPORTUNISTIC: case SIOCGIFEFLAGS: case SIOCGIFDESC: case SIOCGIFLINKPARAMS: case SIOCGIFQUEUESTATS: case SIOCGIFTHROTTLE: case SIOCGASSOCIDS32: case SIOCGASSOCIDS64: case SIOCGCONNIDS32: case SIOCGCONNIDS64: case SIOCGCONNINFO32: case SIOCGCONNINFO64: case SIOCGCONNORDER: case SIOCGIFLOG: case SIOCGIFDELEGATE: case SIOCGIFLLADDR: case SIOCGIFTYPE: case SIOCGIFEXPENSIVE: case SIOCGIF2KCL: case SIOCGSTARTDELAY: case SIOCGIFAGENTIDS32: case SIOCGIFAGENTIDS64: case SIOCGIFAGENTDATA32: case SIOCGIFAGENTDATA64: case SIOCGIFINTERFACESTATE: case SIOCGIFPROBECONNECTIVITY: case SIOCGIFFUNCTIONALTYPE: case SIOCGIFNETSIGNATURE: case SIOCGECNMODE: case SIOCGIFORDER: case SIOCGQOSMARKINGMODE: case SIOCGQOSMARKINGENABLED: case SIOCGIFTIMESTAMPENABLED: case SIOCGIFAGENTLIST32: case SIOCGIFAGENTLIST64: case SIOCGIFLOWINTERNET: case SIOCGIFNAT64PREFIX: #if SKYWALK case SIOCGIFNEXUS: #endif /* SKYWALK */ case SIOCGIFPROTOLIST32: case SIOCGIFPROTOLIST64: case SIOCGIF6LOWPAN: case SIOCGIFTCPKAOMAX: case SIOCGIFLOWPOWER: case SIOCGIFCLAT46ADDR: case SIOCGIFMPKLOG: case SIOCGIFCONSTRAINED: case SIOCGIFXFLAGS: case SIOCGIFNOACKPRIO: case SIOCGETROUTERMODE: case SIOCGIFNOTRAFFICSHAPING: case SIOCGIFGENERATIONID: case SIOCSIFDIRECTLINK: case SIOCGIFDIRECTLINK: return false; default: if (!IOCurrentTaskHasEntitlement(MANAGEMENT_CONTROL_ENTITLEMENT)) { #if (DEBUG || DEVELOPMENT) printf("ifioctl_restrict_management: cmd 0x%lx on %s not allowed for %s:%u\n", cmd, ifname, proc_name_address(p), proc_pid(p)); #endif return true; } return false; } return false; } /* * Given a media word, return one suitable for an application * using the original encoding. */ static int compat_media(int media) { if (IFM_TYPE(media) == IFM_ETHER && IFM_SUBTYPE(media) > IFM_OTHER) { media &= ~IFM_TMASK; media |= IFM_OTHER; } return media; } static int compat_ifmu_ulist(struct ifnet *ifp, u_long cmd, void *data) { struct ifmediareq *ifmr = (struct ifmediareq *)data; user_addr_t user_addr; int i; int *media_list = NULL; int error = 0; bool list_modified = false; user_addr = (cmd == SIOCGIFMEDIA64) ? CAST_USER_ADDR_T(((struct ifmediareq64 *)ifmr)->ifmu_ulist) : CAST_USER_ADDR_T(((struct ifmediareq32 *)ifmr)->ifmu_ulist); if (user_addr == USER_ADDR_NULL || ifmr->ifm_count == 0) { return 0; } media_list = (int *)kalloc_data(ifmr->ifm_count * sizeof(int), Z_WAITOK | Z_ZERO); if (media_list == NULL) { os_log_error(OS_LOG_DEFAULT, "%s: %s kalloc_data() failed", __func__, ifp->if_xname); error = ENOMEM; goto done; } error = copyin(user_addr, media_list, ifmr->ifm_count * sizeof(int)); if (error != 0) { os_log_error(OS_LOG_DEFAULT, "%s: %s copyin() error %d", __func__, ifp->if_xname, error); goto done; } for (i = 0; i < ifmr->ifm_count; i++) { int old_media, new_media; old_media = media_list[i]; new_media = compat_media(old_media); if (new_media == old_media) { continue; } if (if_verbose != 0) { os_log_info(OS_LOG_DEFAULT, "%s: %s converted extended media %08x to compat media %08x", __func__, ifp->if_xname, old_media, new_media); } media_list[i] = new_media; list_modified = true; } if (list_modified) { error = copyout(media_list, user_addr, ifmr->ifm_count * sizeof(int)); if (error != 0) { os_log_error(OS_LOG_DEFAULT, "%s: %s copyout() error %d", __func__, ifp->if_xname, error); goto done; } } done: if (media_list != NULL) { kfree_data(media_list, ifmr->ifm_count * sizeof(int)); } return error; } static int compat_ifmediareq(struct ifnet *ifp, u_long cmd, void *data) { struct ifmediareq *ifmr = (struct ifmediareq *)data; int error; ifmr->ifm_active = compat_media(ifmr->ifm_active); ifmr->ifm_current = compat_media(ifmr->ifm_current); error = compat_ifmu_ulist(ifp, cmd, data); return error; } static int ifioctl_get_media(struct ifnet *ifp, struct socket *so, u_long cmd, caddr_t data) { int error = 0; /* * An ifnet must not implement SIOCGIFXMEDIA as it gets the extended * media subtypes macros from <net/if_media.h> */ switch (cmd) { case SIOCGIFMEDIA32: case SIOCGIFXMEDIA32: error = ifnet_ioctl(ifp, SOCK_DOM(so), SIOCGIFMEDIA32, data); break; case SIOCGIFMEDIA64: case SIOCGIFXMEDIA64: error = ifnet_ioctl(ifp, SOCK_DOM(so), SIOCGIFMEDIA64, data); break; } if (if_verbose != 0 && error != 0) { os_log(OS_LOG_DEFAULT, "%s: first ifnet_ioctl(%s, %08lx) error %d", __func__, ifp->if_xname, cmd, error); } if (error == 0 && (cmd == SIOCGIFMEDIA32 || cmd == SIOCGIFMEDIA64)) { error = compat_ifmediareq(ifp, cmd, data); } return error; } static errno_t null_proto_input(ifnet_t ifp, protocol_family_t protocol, mbuf_t packet, char *header) { #pragma unused(protocol, packet, header) os_log(OS_LOG_DEFAULT, "null_proto_input unexpected packet on %s", ifp->if_xname); return 0; } /* * 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; } OS_FALLTHROUGH; case SIOCIFCREATE: /* struct ifreq */ case SIOCIFCREATE2: /* struct ifreq */ case SIOCIFDESTROY: /* struct ifreq */ case SIOCGIFFLAGS: /* struct ifreq */ case SIOCGIFEFLAGS: /* struct ifreq */ case SIOCGIFCAP: /* struct ifreq */ case SIOCGIFMETRIC: /* struct ifreq */ case SIOCGIFMTU: /* struct ifreq */ case SIOCGIFPHYS: /* struct ifreq */ case SIOCSIFFLAGS: /* struct ifreq */ case SIOCSIFCAP: /* struct ifreq */ case SIOCSIFMANAGEMENT: /* struct ifreq */ case SIOCSATTACHPROTONULL: /* 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 SIOCSIFLINKQUALITYMETRIC: /* 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 SIOCSIFSUBFAMILY: /* struct ifreq */ 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 */ case SIOCGIFLOWPOWER: /* struct ifreq */ case SIOCSIFLOWPOWER: /* struct ifreq */ case SIOCGIFMPKLOG: /* struct ifreq */ case SIOCSIFMPKLOG: /* struct ifreq */ case SIOCGIFCONSTRAINED: /* struct ifreq */ case SIOCSIFCONSTRAINED: /* struct ifreq */ case SIOCSIFESTTHROUGHPUT: /* struct ifreq */ case SIOCSIFRADIODETAILS: /* struct ifreq */ case SIOCGIFXFLAGS: /* struct ifreq */ case SIOCGIFNOACKPRIO: /* struct ifreq */ case SIOCSIFNOACKPRIO: /* struct ifreq */ case SIOCSIFMARKWAKEPKT: /* struct ifreq */ case SIOCSIFNOTRAFFICSHAPING: /* struct ifreq */ case SIOCGIFNOTRAFFICSHAPING: /* struct ifreq */ case SIOCGIFGENERATIONID: /* struct ifreq */ case SIOCSIFDIRECTLINK: /* struct ifreq */ case SIOCGIFDIRECTLINK: /* 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; } if (ifioctl_restrict_management(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_ref(ifname); break; case SIOCSIFPHYADDR_IN6_32: /* struct in6_aliasreq_32 */ bcopy(((struct in6_aliasreq_32 *)(void *)data)->ifra_name, ifname, IFNAMSIZ); ifp = ifunit_ref(ifname); break; case SIOCSIFPHYADDR_IN6_64: /* struct in6_aliasreq_64 */ bcopy(((struct in6_aliasreq_64 *)(void *)data)->ifra_name, ifname, IFNAMSIZ); ifp = ifunit_ref(ifname); break; case SIOCGIFSTATUS: /* struct ifstat */ ifs = kalloc_type(struct ifstat, Z_WAITOK | Z_NOFAIL); bcopy(data, ifs, sizeof(*ifs)); ifs->ifs_name[IFNAMSIZ - 1] = '\0'; bcopy(ifs->ifs_name, ifname, IFNAMSIZ); ifp = ifunit_ref(ifname); break; case SIOCGIFMEDIA32: /* struct ifmediareq32 */ case SIOCGIFXMEDIA32: /* struct ifmediareq32 */ bcopy(((struct ifmediareq32 *)(void *)data)->ifm_name, ifname, IFNAMSIZ); ifp = ifunit_ref(ifname); break; case SIOCGIFMEDIA64: /* struct ifmediareq64 */ case SIOCGIFXMEDIA64: /* struct ifmediareq64 */ bcopy(((struct ifmediareq64 *)(void *)data)->ifm_name, ifname, IFNAMSIZ); ifp = ifunit_ref(ifname); break; case SIOCSIFDESC: /* struct if_descreq */ case SIOCGIFDESC: /* struct if_descreq */ bcopy(((struct if_descreq *)(void *)data)->ifdr_name, ifname, IFNAMSIZ); ifp = ifunit_ref(ifname); break; case SIOCSIFLINKPARAMS: /* struct if_linkparamsreq */ case SIOCGIFLINKPARAMS: /* struct if_linkparamsreq */ bcopy(((struct if_linkparamsreq *)(void *)data)->iflpr_name, ifname, IFNAMSIZ); ifp = ifunit_ref(ifname); break; case SIOCGIFQUEUESTATS: /* struct if_qstatsreq */ bcopy(((struct if_qstatsreq *)(void *)data)->ifqr_name, ifname, IFNAMSIZ); ifp = ifunit_ref(ifname); break; case SIOCSIFTHROTTLE: /* struct if_throttlereq */ case SIOCGIFTHROTTLE: /* struct if_throttlereq */ bcopy(((struct if_throttlereq *)(void *)data)->ifthr_name, ifname, IFNAMSIZ); ifp = ifunit_ref(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_ref(ifname); break; case SIOCSIFNETSIGNATURE: /* struct if_nsreq */ case SIOCGIFNETSIGNATURE: /* struct if_nsreq */ bcopy(((struct if_nsreq *)(void *)data)->ifnsr_name, ifname, IFNAMSIZ); ifp = ifunit_ref(ifname); break; case SIOCSIFNETWORKID: /* struct if_netidreq */ bcopy(((struct if_netidreq *)(void *)data)->ifnetid_name, ifname, IFNAMSIZ); ifp = ifunit_ref(ifname); break; #if SKYWALK case SIOCGIFNEXUS: /* struct if_nexusreq */ bcopy(((struct if_nexusreq *)(void *)data)->ifnr_name, ifname, IFNAMSIZ); ifp = ifunit_ref(ifname); break; #endif /* SKYWALK */ case SIOCGIFPROTOLIST32: /* struct if_protolistreq32 */ case SIOCGIFPROTOLIST64: /* struct if_protolistreq64 */ bcopy(((struct if_protolistreq *)(void *)data)->ifpl_name, ifname, IFNAMSIZ); ifp = ifunit_ref(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_ref(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 */ case SIOCSIFPHYADDR_IN6_32: /* struct in6_aliasreq_32 */ case SIOCSIFPHYADDR_IN6_64: /* struct in6_aliasreq_64 */ 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 */ case SIOCGIFXMEDIA32: /* struct ifmediareq32 */ case SIOCGIFXMEDIA64: /* struct ifmediareq64 */ error = ifioctl_get_media(ifp, 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; case SIOCSIFNETWORKID: /* struct if_netidreq */ error = ifioctl_networkid(ifp, data); break; case SIOCSIFNAT64PREFIX: /* struct if_nat64req */ case SIOCGIFNAT64PREFIX: /* struct if_nat64req */ error = ifioctl_nat64prefix(ifp, cmd, data); break; case SIOCGIFCLAT46ADDR: /* struct if_clat46req */ error = ifioctl_clat46addr(ifp, cmd, data); break; #if SKYWALK case SIOCGIFNEXUS: error = ifioctl_nexus(ifp, cmd, data); break; #endif /* SKYWALK */ 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); // Don't allow to call SIOCAIFADDR and SIOCDIFADDR with // ifreq as the code expects ifaddr if ((error == EOPNOTSUPP || error == ENOTSUP) && !(cmd == SIOCAIFADDR || cmd == SIOCDIFADDR)) { error = ifnet_ioctl(ifp, SOCK_DOM(so), cmd, data); } break; } done: if (ifs != NULL) { kfree_type(struct ifstat, ifs); } 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); } } if (ifp != NULL) { ifnet_decr_iorefcnt(ifp); } 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 SIOCGIFXFLAGS: ifnet_lock_shared(ifp); ifr->ifr_xflags = ifp->if_xflags; 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; 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; ASSERT(ifq != NULL); 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); nd6_setmtu(ifp); /* 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; } if (ifr->ifr_addr.sa_len > sizeof(struct sockaddr)) { ifr->ifr_addr.sa_len = sizeof(struct sockaddr); } /* * 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 SIOCSIFMEDIA: error = proc_suser(p); if (error != 0) { break; } /* * Silently ignore setting IFM_OTHER */ if (ifr->ifr_media == IFM_OTHER) { os_log_info(OS_LOG_DEFAULT, "%s: %s SIOCSIFMEDIA ignore IFM_OTHER", __func__, ifp->if_xname); error = 0; break; } error = ifnet_ioctl(ifp, SOCK_DOM(so), cmd, (caddr_t)ifr); if (error != 0) { break; } ifnet_touch_lastchange(ifp); break; case SIOCDIFPHYADDR: 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 */ SOCKADDR_ZERO(&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 SIOCSIFLINKQUALITYMETRIC: if ((error = priv_check_cred(kauth_cred_get(), PRIV_NET_INTERFACE_CONTROL, 0)) != 0) { return error; } error = ifnet_set_link_quality(ifp, ifr->ifr_link_quality_metric); 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; } if (ifr->ifr_expensive) { if_set_eflags(ifp, IFEF_EXPENSIVE); } else { if_clear_eflags(ifp, IFEF_EXPENSIVE); } ifnet_increment_generation(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_increment_generation(difp); } ifnet_lock_done(difp); } ifnet_head_done(); necp_update_all_clients(); break; } case SIOCGIFCONSTRAINED: if ((ifp->if_xflags & IFXF_CONSTRAINED) != 0) { ifr->ifr_constrained = 1; } else { ifr->ifr_constrained = 0; } break; case SIOCSIFCONSTRAINED: { struct ifnet *difp; if ((error = priv_check_cred(kauth_cred_get(), PRIV_NET_INTERFACE_CONTROL, 0)) != 0) { return error; } if (ifr->ifr_constrained) { if_set_xflags(ifp, IFXF_CONSTRAINED); } else { if_clear_xflags(ifp, IFXF_CONSTRAINED); } ifnet_increment_generation(ifp); /* * Update the constrained 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.constrained = ((ifp->if_xflags & IFXF_CONSTRAINED) != 0) ? 1 : 0; ifnet_increment_generation(difp); } ifnet_lock_done(difp); } ifnet_head_done(); necp_update_all_clients(); break; } case SIOCSIFESTTHROUGHPUT: { bool changed = false; struct ifnet *difp; if ((error = priv_check_cred(kauth_cred_get(), PRIV_NET_INTERFACE_CONTROL, 0)) != 0) { return error; } ifnet_lock_exclusive(ifp); changed = (ifp->if_estimated_up_bucket != ifr->ifr_estimated_throughput.up_bucket) || (ifp->if_estimated_down_bucket != ifr->ifr_estimated_throughput.down_bucket); ifp->if_estimated_up_bucket = ifr->ifr_estimated_throughput.up_bucket; ifp->if_estimated_down_bucket = ifr->ifr_estimated_throughput.down_bucket; if (changed) { ifnet_increment_generation(ifp); } ifnet_lock_done(ifp); os_log_info(OS_LOG_DEFAULT, "SIOCSIFESTTHROUGHPUT %s%s up: %u, down: %u", ifp->if_name, changed ? " changed" : "", ifp->if_estimated_up_bucket, ifp->if_estimated_down_bucket); if (changed) { /* * Update the generation on delegated interfaces. */ ifnet_head_lock_shared(); TAILQ_FOREACH(difp, &ifnet_head, if_link) { ifnet_lock_exclusive(difp); if (difp->if_delegated.ifp == ifp) { ifnet_increment_generation(difp); } ifnet_lock_done(difp); } ifnet_head_done(); necp_update_all_clients(); } break; } case SIOCSIFRADIODETAILS: { bool changed = false; struct ifnet *difp; if ((error = priv_check_cred(kauth_cred_get(), PRIV_NET_INTERFACE_CONTROL, 0)) != 0) { return error; } ifnet_lock_exclusive(ifp); changed = ifp->if_radio_type != ifr->ifr_radio_details.technology || ifp->if_radio_channel != ifr->ifr_radio_details.channel; ifp->if_radio_type = ifr->ifr_radio_details.technology; ifp->if_radio_channel = ifr->ifr_radio_details.channel; ifnet_lock_done(ifp); os_log_info(OS_LOG_DEFAULT, "SIOCSIFRADIODETAILS %s%s technology: %u, channel: %u", ifp->if_name, changed ? " changed" : "", ifr->ifr_radio_details.technology, ifr->ifr_radio_details.channel); if (changed) { ifnet_increment_generation(ifp); /* * Update the generation on delegated interfaces. */ ifnet_head_lock_shared(); TAILQ_FOREACH(difp, &ifnet_head, if_link) { ifnet_lock_exclusive(difp); if (difp->if_delegated.ifp == ifp) { ifnet_increment_generation(difp); } ifnet_lock_done(difp); } ifnet_head_done(); necp_update_all_clients(); } 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; } if (ifr->ifr_2kcl) { if_set_eflags(ifp, IFEF_2KCL); } else { if_clear_eflags(ifp, IFEF_2KCL); } 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: SOCKADDR_COPY(&ifr->ifr_addr.sa_family, &ifr->ifr_addr, sizeof(u_short)); } if (cmd == SIOCSIFKPI) { int temperr = proc_suser(p); if (temperr != 0) { error = temperr; } } // Don't allow to call SIOCSIFADDR and SIOCSIFDSTADDR // with ifreq as the code expects ifaddr if ((error == EOPNOTSUPP || error == ENOTSUP) && !(cmd == SIOCSIFADDR || cmd == SIOCSIFDSTADDR)) { 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) { if_clear_eflags(ifp, IFEF_ECN_ENABLE | IFEF_ECN_DISABLE); } else if (ifr->ifr_ecn_mode == IFRTYPE_ECN_ENABLE) { if_set_eflags(ifp, IFEF_ECN_ENABLE); if_clear_eflags(ifp, IFEF_ECN_DISABLE); } else if (ifr->ifr_ecn_mode == IFRTYPE_ECN_DISABLE) { if_set_eflags(ifp, IFEF_ECN_DISABLE); if_clear_eflags(ifp, IFEF_ECN_ENABLE); } else { error = EINVAL; } break; case SIOCSIFTIMESTAMPENABLE: case SIOCSIFTIMESTAMPDISABLE: error = proc_suser(p); if (error != 0) { break; } if ((cmd == SIOCSIFTIMESTAMPENABLE && (ifp->if_xflags & IFXF_TIMESTAMP_ENABLED) != 0) || (cmd == SIOCSIFTIMESTAMPDISABLE && (ifp->if_xflags & IFXF_TIMESTAMP_ENABLED) == 0)) { break; } if (cmd == SIOCSIFTIMESTAMPENABLE) { if_set_xflags(ifp, IFXF_TIMESTAMP_ENABLED); } else { if_clear_xflags(ifp, IFXF_TIMESTAMP_ENABLED); } /* * 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) { if_set_eflags(ifp, IFEF_QOSMARKING_ENABLED); } else { if_clear_eflags(ifp, IFEF_QOSMARKING_ENABLED); } break; case SIOCGQOSMARKINGENABLED: ifr->ifr_qosmarking_enabled = ((ifp->if_eflags & IFEF_QOSMARKING_ENABLED) != 0) ? 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 SIOCSIFSUBFAMILY: if ((error = priv_check_cred(kauth_cred_get(), PRIV_NET_INTERFACE_CONTROL, 0)) != 0) { return error; } #if (DEBUG || DEVELOPMENT) if (management_control_unrestricted) { uint32_t subfamily = ifr->ifr_type.ift_subfamily; if (subfamily == ifp->if_subfamily) { break; } else if (subfamily == IFRTYPE_SUBFAMILY_MANAGEMENT && ifp->if_subfamily == 0) { ifp->if_subfamily = IFNET_SUBFAMILY_MANAGEMENT; ifnet_set_management(ifp, true); break; } else if (subfamily == 0 && ifp->if_subfamily == IFNET_SUBFAMILY_MANAGEMENT) { ifnet_set_management(ifp, false); break; } } #endif /* (DEBUG || DEVELOPMENT) */ error = ifnet_ioctl(ifp, SOCK_DOM(so), cmd, (caddr_t)ifr); break; case SIOCSIFMANAGEMENT: { if (management_control_unrestricted == false && !IOCurrentTaskHasEntitlement(MANAGEMENT_CONTROL_ENTITLEMENT)) { os_log(OS_LOG_DEFAULT, "ifioctl_req: cmd SIOCSIFMANAGEMENT on %s not allowed for %s:%u\n", ifp->if_xname, proc_name_address(p), proc_pid(p)); return EPERM; } if (ifr->ifr_intval != 0) { ifnet_set_management(ifp, true); } else { if (ifp->if_subfamily == IFNET_SUBFAMILY_MANAGEMENT) { os_log(OS_LOG_DEFAULT, "ifioctl_req: cmd SIOCSIFMANAGEMENT 0 not allowed on %s with subfamily management", ifp->if_xname); return EPERM; } ifnet_set_management(ifp, false); } break; } case SIOCSATTACHPROTONULL: { if ((error = priv_check_cred(kauth_cred_get(), PRIV_NET_INTERFACE_CONTROL, 0)) != 0) { return error; } if (ifr->ifr_intval != 0) { struct ifnet_attach_proto_param reg = {}; reg.input = null_proto_input; error = ifnet_attach_protocol(ifp, PF_NULL, ®); if (error != 0) { os_log(OS_LOG_DEFAULT, "ifioctl_req: SIOCSATTACHPROTONULL ifnet_attach_protocol(%s) failed, %d", ifp->if_xname, error); } } else { error = ifnet_detach_protocol(ifp, PF_NULL); if (error != 0) { os_log(OS_LOG_DEFAULT, "ifioctl_req: SIOCSATTACHPROTONULL ifnet_detach_protocol(%s) failed, %d", ifp->if_xname, error); } } break; } case SIOCSIFLOWINTERNET: if ((error = priv_check_cred(kauth_cred_get(), PRIV_NET_INTERFACE_CONTROL, 0)) != 0) { return error; } if (ifr->ifr_low_internet & IFRTYPE_LOW_INTERNET_ENABLE_UL) { if_set_xflags(ifp, IFXF_LOW_INTERNET_UL); } else { if_clear_xflags(ifp, IFXF_LOW_INTERNET_UL); } if (ifr->ifr_low_internet & IFRTYPE_LOW_INTERNET_ENABLE_DL) { if_set_xflags(ifp, IFXF_LOW_INTERNET_DL); } else { if_clear_xflags(ifp, IFXF_LOW_INTERNET_DL); } break; case SIOCGIFLOWINTERNET: ifnet_lock_shared(ifp); ifr->ifr_low_internet = 0; if ((ifp->if_xflags & IFXF_LOW_INTERNET_UL) != 0) { ifr->ifr_low_internet |= IFRTYPE_LOW_INTERNET_ENABLE_UL; } if ((ifp->if_xflags & IFXF_LOW_INTERNET_DL) != 0) { ifr->ifr_low_internet |= IFRTYPE_LOW_INTERNET_ENABLE_DL; } ifnet_lock_done(ifp); break; case SIOCGIFLOWPOWER: ifr->ifr_low_power_mode = ((ifp->if_xflags & IFXF_LOW_POWER) != 0); break; case SIOCSIFLOWPOWER: #if (DEVELOPMENT || DEBUG) error = if_set_low_power(ifp, (ifr->ifr_low_power_mode != 0)); #else /* DEVELOPMENT || DEBUG */ error = EOPNOTSUPP; #endif /* DEVELOPMENT || DEBUG */ break; case SIOCGIFMPKLOG: ifr->ifr_mpk_log = ((ifp->if_xflags & IFXF_MPK_LOG) != 0); break; case SIOCSIFMPKLOG: if (ifr->ifr_mpk_log) { if_set_xflags(ifp, IFXF_MPK_LOG); } else { if_clear_xflags(ifp, IFXF_MPK_LOG); } break; case SIOCGIFNOACKPRIO: if ((ifp->if_eflags & IFEF_NOACKPRI) != 0) { ifr->ifr_noack_prio = 1; } else { ifr->ifr_noack_prio = 0; } break; case SIOCSIFNOACKPRIO: if ((error = priv_check_cred(kauth_cred_get(), PRIV_NET_INTERFACE_CONTROL, 0)) != 0) { return error; } if (ifr->ifr_noack_prio) { if_set_eflags(ifp, IFEF_NOACKPRI); } else { if_clear_eflags(ifp, IFEF_NOACKPRI); } break; case SIOCSIFMARKWAKEPKT: #if (DEVELOPMENT || DEBUG) if ((error = priv_check_cred(kauth_cred_get(), PRIV_NET_INTERFACE_CONTROL, 0)) != 0) { return error; } if (net_wake_pkt_debug) { os_log(OS_LOG_DEFAULT, "SIOCSIFMARKWAKEPKT %s", ifp->if_xname); } if (ifr->ifr_intval != 0) { ifp->if_xflags |= IFXF_MARK_WAKE_PKT; } else { ifp->if_xflags &= ~IFXF_MARK_WAKE_PKT; } #else /* DEVELOPMENT || DEBUG */ error = EOPNOTSUPP; #endif /* DEVELOPMENT || DEBUG */ break; case SIOCSIFNOTRAFFICSHAPING: if ((error = priv_check_cred(kauth_cred_get(), PRIV_NET_INTERFACE_CONTROL, 0)) != 0) { return error; } os_log_info(OS_LOG_DEFAULT, "SIOCSIFNOTRAFFICSHAPING %s %d", ifp->if_xname, ifr->ifr_intval); if (ifr->ifr_intval != 0) { ifp->if_xflags |= IFXF_NO_TRAFFIC_SHAPING; } else { ifp->if_xflags &= ~IFXF_NO_TRAFFIC_SHAPING; } break; case SIOCGIFNOTRAFFICSHAPING: if ((ifp->if_xflags & IFXF_NO_TRAFFIC_SHAPING) != 0) { ifr->ifr_intval = 1; } else { ifr->ifr_intval = 0; } break; case SIOCGIFGENERATIONID: ifr->ifr_creation_generation_id = ifp->if_creation_generation_id; break; case SIOCSIFDIRECTLINK: if ((error = priv_check_cred(kauth_cred_get(), PRIV_NET_INTERFACE_CONTROL, 0)) != 0) { return error; } if (ifr->ifr_is_directlink) { if_set_eflags(ifp, IFEF_DIRECTLINK); } else { if_clear_eflags(ifp, IFEF_DIRECTLINK); } break; case SIOCGIFDIRECTLINK: ifnet_lock_shared(ifp); ifr->ifr_is_directlink = (ifp->if_eflags & IFEF_DIRECTLINK) ? true : false; 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 (%d)\n", if_name(ifp), (newflags & IFF_PROMISC) != 0 ? "enable" : "disable", error != 0 ? "failed" : "succeeded", error); } 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)); bzero(u.buf, sizeof(u.buf)); IFA_LOCK(ifa); sa = ifa->ifa_addr; addrs++; if (ifa == ifp->if_lladdr) { VERIFY(sa->sa_family == AF_LINK); SOCKADDR_COPY(sa, &u.sa, 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; } static bool set_allmulti(struct ifnet * ifp, bool enable) { bool changed = false; ifnet_lock_exclusive(ifp); if (enable) { if (ifp->if_amcount++ == 0) { ifp->if_flags |= IFF_ALLMULTI; changed = true; } } else { if (ifp->if_amcount > 1) { ifp->if_amcount--; } else { ifp->if_amcount = 0; ifp->if_flags &= ~IFF_ALLMULTI; changed = true; } } ifnet_lock_done(ifp); return changed; } /* * Like ifnet_set_promiscuous(), but for all-multicast-reception mode. */ int if_allmulti(struct ifnet *ifp, int onswitch) { bool enable = onswitch != 0; int error = 0; if (set_allmulti(ifp, enable)) { /* state change, tell the driver */ error = ifnet_ioctl(ifp, 0, SIOCSIFFLAGS, NULL); log(LOG_INFO, "%s: %s allmulti %s (%d)\n", if_name(ifp), enable ? "enable" : "disable", error != 0 ? "failed" : "succeeded", error); if (error == 0) { rt_ifmsg(ifp); } else { /* restore the reference count, flags */ (void)set_allmulti(ifp, !enable); } } return error; } static struct ifmultiaddr * ifma_alloc(zalloc_flags_t how) { struct ifmultiaddr *ifma; ifma = zalloc_flags(ifma_zone, how | Z_ZERO); if (ifma != NULL) { 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) { kfree_data(ifma->ifma_addr, ifma->ifma_addr->sa_len); 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 = os_atomic_inc_orig(cnt, relaxed) % 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 (!sa_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 */ copy = SA(kalloc_data(original->sa_len, Z_WAITOK)); if (copy != NULL) { SOCKADDR_COPY(original, copy, original->sa_len); } return copy; } switch (original->sa_family) { case AF_LINK: { const struct sockaddr_dl *sdl_original = SDL(original); if (sdl_original->sdl_len < offsetof(struct sockaddr_dl, sdl_data)) { return NULL; } 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); sdl_new = SDL(kalloc_data(len, Z_WAITOK | Z_ZERO)); if (sdl_new != NULL) { sdl_new->sdl_len = (u_char)len; sdl_new->sdl_family = AF_LINK; sdl_new->sdl_alen = (u_char)alen; bcopy(aptr, LLADDR(sdl_new), alen); } return SA(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, SA(&storage), sizeof(storage)); if (error == 0 && storage.ss_len != 0) { llsa = copy_and_normalize(SA(&storage)); if (llsa == NULL) { error = ENOMEM; goto cleanup; } llifma = ifma_alloc(Z_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(Z_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) { kfree_data(llsa, llsa->sa_len); 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. * Note that the notification is deferred to avoid * locking reodering issues in certain paths. */ if (lladdr || ll_firstref) { ifnet_ioctl_async(ifp, SIOCADDMULTI); } if (ifp->if_updatemcasts > 0) { ifp->if_updatemcasts = 0; } return 0; cleanup: if (ifma != NULL) { ifma_free(ifma); } if (dupsa != NULL) { kfree_data(dupsa, dupsa->sa_len); } if (llifma != NULL) { ifma_free(llifma); } if (llsa != NULL) { kfree_data(llsa, llsa->sa_len); } 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 (!sa_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) { kfree_data(dupsa, dupsa->sa_len); } 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. * Note that the notification is deferred to avoid * locking reodering issues in certain paths. */ ifnet_ioctl_async(ifp, SIOCDELMULTI); } 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) { kfree_data(dupsa, dupsa->sa_len); } 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; if (rt_key(rt)->sa_family == AF_INET && INTF_ADJUST_MTU_FOR_CLAT46(ifp)) { rt->rt_rmx.rmx_mtu = IN6_LINKMTU(ifp); /* Further adjust the size for CLAT46 expansion */ rt->rt_rmx.rmx_mtu -= CLAT46_HDR_EXPANSION_OVERHD; } } } 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 { \ uint64_t _val = 0; \ _val = os_atomic_load((uint64_t *)(void *)(uintptr_t)&if_data_int->fld, relaxed); \ if_data->fld = (uint32_t) _val; \ } 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 = (uint32_t)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 += (uint32_t)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 { \ if_data64->fld = os_atomic_load((uint64_t *)(void *)(uintptr_t)&if_data_int->fld, relaxed); \ } 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 = (uint32_t)if_data_int->ifi_lastchange.tv_sec; if_data64->ifi_lastchange.tv_usec = (uint32_t)if_data_int->ifi_lastchange.tv_usec; if_data64->ifi_lastchange.tv_sec += (uint32_t)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 { \ if_tc->fld = os_atomic_load((uint64_t *)(void *)(uintptr_t)&ifp->if_tc.fld, relaxed); \ } 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 { \ if_de->fld = os_atomic_load((uint64_t *)(void *)(uintptr_t)&ifp->if_data.fld, relaxed); \ } 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 { \ if_ps->ifi_tcp_##fld = os_atomic_load((uint64_t *)(void *)(uintptr_t)&ifp->if_tcp_stat->fld, relaxed); \ } while (0) #define COPY_IF_PS_UDP_FIELD64_ATOMIC(fld) do { \ if_ps->ifi_udp_##fld = os_atomic_load((uint64_t *)(void *)(uintptr_t)&ifp->if_udp_stat->fld, relaxed); \ } 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; } bcopy(&ifp->if_poll_pstats, if_rs, sizeof(*if_rs)); /* Release the IO refcnt */ ifnet_decr_iorefcnt(ifp); } void if_copy_netif_stats(struct ifnet *ifp, struct if_netif_stats *if_ns) { bzero(if_ns, sizeof(*if_ns)); #if SKYWALK if (!(ifp->if_capabilities & IFCAP_SKYWALK) || !ifnet_is_attached(ifp, 1)) { return; } if (ifp->if_na != NULL) { nx_netif_copy_stats(ifp->if_na, if_ns); } /* Release the IO refcnt */ ifnet_decr_iorefcnt(ifp); #else /* SKYWALK */ #pragma unused(ifp) #endif /* SKYWALK */ } void ifa_deallocated(struct ifaddr *ifa) { IFA_LOCK_SPIN(ifa); if (__improbable(ifa->ifa_debug & IFD_ATTACHED)) { panic("ifa %p attached to ifp is being freed", 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 XNU_PLATFORM_MacOSX if (ifa->ifa_free == NULL) { IFA_UNLOCK(ifa); /* * support for 3rd party kexts, * old ABI was that this had to be allocated * with MALLOC(M_IFADDR). */ __typed_allocators_ignore(kheap_free_addr(KHEAP_DEFAULT, ifa)); } else #endif /* XNU_PLATFORM_MacOSX */ { /* Become a regular mutex */ IFA_CONVERT_LOCK(ifa); /* callee will unlock */ (*ifa->ifa_free)(ifa); } } else { IFA_UNLOCK(ifa); } } void ifa_initref(struct ifaddr *ifa) { os_ref_init_raw(&ifa->ifa_refcnt, &ifa_refgrp); } 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: /* 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 SIOCGETROUTERMODE_IN6: case SIOCLL_CGASTART_32: case SIOCLL_CGASTART_64: case SIOCGIFCGAPREP_IN6: case SIOCSIFCGAPREP_IN6: /* 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 SIOCGIFXMEDIA32: case SIOCGIFXMEDIA64: 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 SIOCSIFMANAGEMENT: case SIOCSATTACHPROTONULL: 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: case SIOCSIFKPI: case SIOCGIFKPI: case SIOCGIFWAKEFLAGS: case SIOCGIFGETRTREFCNT: case SIOCGIFLINKQUALITYMETRIC: case SIOCSIFLINKQUALITYMETRIC: case SIOCSIFOPPORTUNISTIC: case SIOCGIFOPPORTUNISTIC: case SIOCGETROUTERMODE: 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 SIOCSIFINTERFACESTATE: case SIOCGIFINTERFACESTATE: case SIOCSIFPROBECONNECTIVITY: case SIOCGIFPROBECONNECTIVITY: case SIOCGIFFUNCTIONALTYPE: case SIOCSIFNETSIGNATURE: case SIOCGIFNETSIGNATURE: case SIOCSIFNETWORKID: case SIOCGECNMODE: case SIOCSECNMODE: case SIOCSIFORDER: case SIOCGIFORDER: case SIOCSQOSMARKINGMODE: case SIOCSQOSMARKINGENABLED: case SIOCGQOSMARKINGMODE: case SIOCGQOSMARKINGENABLED: case SIOCSIFTIMESTAMPENABLE: case SIOCSIFTIMESTAMPDISABLE: case SIOCGIFTIMESTAMPENABLED: case SIOCSIFDISABLEOUTPUT: case SIOCSIFSUBFAMILY: case SIOCGIFAGENTLIST32: case SIOCGIFAGENTLIST64: case SIOCSIFLOWINTERNET: case SIOCGIFLOWINTERNET: case SIOCGIFNAT64PREFIX: case SIOCSIFNAT64PREFIX: case SIOCGIFCLAT46ADDR: #if SKYWALK case SIOCGIFNEXUS: #endif /* SKYWALK */ case SIOCGIFPROTOLIST32: case SIOCGIFPROTOLIST64: case SIOCGIFLOWPOWER: case SIOCSIFLOWPOWER: case SIOCGIFMPKLOG: case SIOCSIFMPKLOG: case SIOCGIFCONSTRAINED: case SIOCSIFCONSTRAINED: case SIOCGIFXFLAGS: case SIOCGIFNOACKPRIO: case SIOCSIFNOACKPRIO: case SIOCSIFMARKWAKEPKT: case SIOCSIFNOTRAFFICSHAPING: case SIOCGIFNOTRAFFICSHAPING: case SIOCSIFDIRECTLINK: case SIOCGIFDIRECTLINK: ; } } #if SKYWALK /* * XXX: This API is only used by BSD stack and for now will always return 0. * For Skywalk native drivers, preamble space need not be allocated in mbuf * as the preamble will be reserved in the translated skywalk packet * which is transmitted to the driver. * For Skywalk compat drivers currently headroom is always set to zero. */ #endif /* SKYWALK */ 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; }; struct intf_event_nwk_wq_entry { struct nwk_wq_entry nwk_wqe; struct intf_event intf_ev_arg; }; static void intf_event_callback(struct nwk_wq_entry *nwk_item) { struct intf_event_nwk_wq_entry *p_ev; p_ev = __container_of(nwk_item, struct intf_event_nwk_wq_entry, nwk_wqe); /* Call this before we walk the tree */ EVENTHANDLER_INVOKE(&ifnet_evhdlr_ctxt, ifnet_event, p_ev->intf_ev_arg.ifp, SA(&(p_ev->intf_ev_arg.addr)), p_ev->intf_ev_arg.intf_event_code); kfree_type(struct intf_event_nwk_wq_entry, p_ev); } 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; p_intf_ev = kalloc_type(struct intf_event_nwk_wq_entry, Z_WAITOK | Z_ZERO | Z_NOFAIL); 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; nwk_wq_enqueue(&p_intf_ev->nwk_wqe); } int if_get_tcp_kao_max(struct ifnet *ifp) { int error = 0; if (ifp->if_tcp_kao_max == 0) { struct ifreq ifr; memset(&ifr, 0, sizeof(struct ifreq)); error = ifnet_ioctl(ifp, 0, SIOCGIFTCPKAOMAX, &ifr); ifnet_lock_exclusive(ifp); if (error == 0) { ifp->if_tcp_kao_max = ifr.ifr_tcp_kao_max; } else if (error == EOPNOTSUPP) { ifp->if_tcp_kao_max = default_tcp_kao_max; } ifnet_lock_done(ifp); } return error; } int ifnet_set_management(struct ifnet *ifp, boolean_t on) { if (ifp == NULL) { return EINVAL; } if (if_management_verbose > 0) { os_log(OS_LOG_DEFAULT, "interface %s management set %s by %s:%d", ifp->if_xname, on ? "true" : "false", proc_best_name(current_proc()), proc_selfpid()); } if (on) { if_set_xflags(ifp, IFXF_MANAGEMENT); if_management_interface_check_needed = true; in_management_interface_check(); } else { if_clear_xflags(ifp, IFXF_MANAGEMENT); } return 0; } |