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gems-kernel/source/THIRDPARTY/xnu/bsd/net/kpi_interface.c
Sam Sneed f5727805f2 add darwin/xnu functionality
2024-06-03 11:29:39 -05:00

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/*
* Copyright (c) 2004-2022 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
#include "kpi_interface.h"
#include <sys/queue.h>
#include <sys/param.h> /* for definition of NULL */
#include <kern/debug.h> /* for panic */
#include <sys/errno.h>
#include <sys/socket.h>
#include <sys/kern_event.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/kpi_mbuf.h>
#include <sys/mcache.h>
#include <sys/protosw.h>
#include <sys/syslog.h>
#include <net/if_var.h>
#include <net/if_dl.h>
#include <net/dlil.h>
#include <net/if_types.h>
#include <net/if_dl.h>
#include <net/if_arp.h>
#include <net/if_llreach.h>
#include <net/if_ether.h>
#include <net/net_api_stats.h>
#include <net/route.h>
#include <net/if_ports_used.h>
#include <libkern/libkern.h>
#include <libkern/OSAtomic.h>
#include <kern/locks.h>
#include <kern/clock.h>
#include <sys/sockio.h>
#include <sys/proc.h>
#include <sys/sysctl.h>
#include <sys/mbuf.h>
#include <netinet/ip_var.h>
#include <netinet/udp.h>
#include <netinet/udp_var.h>
#include <netinet/tcp.h>
#include <netinet/tcp_var.h>
#include <netinet/in_pcb.h>
#ifdef INET
#include <netinet/igmp_var.h>
#endif
#include <netinet6/mld6_var.h>
#include <netkey/key.h>
#include <stdbool.h>
#include "net/net_str_id.h"
#if CONFIG_MACF
#include <sys/kauth.h>
#include <security/mac_framework.h>
#endif
#if SKYWALK
#include <skywalk/os_skywalk_private.h>
#include <skywalk/nexus/netif/nx_netif.h>
#endif /* SKYWALK */
extern uint64_t if_creation_generation_count;
#undef ifnet_allocate
errno_t ifnet_allocate(const struct ifnet_init_params *init,
ifnet_t *ifp);
static errno_t ifnet_allocate_common(const struct ifnet_init_params *init,
ifnet_t *ifp, bool is_internal);
#define TOUCHLASTCHANGE(__if_lastchange) { \
(__if_lastchange)->tv_sec = (time_t)net_uptime(); \
(__if_lastchange)->tv_usec = 0; \
}
static errno_t ifnet_defrouter_llreachinfo(ifnet_t, sa_family_t,
struct ifnet_llreach_info *);
static void ifnet_kpi_free(ifnet_t);
static errno_t ifnet_list_get_common(ifnet_family_t, boolean_t, ifnet_t **,
u_int32_t *);
static errno_t ifnet_set_lladdr_internal(ifnet_t, const void *, size_t,
u_char, int);
static errno_t ifnet_awdl_check_eflags(ifnet_t, u_int32_t *, u_int32_t *);
/*
* Temporary work around until we have real reference counting
*
* We keep the bits about calling dlil_if_release (which should be
* called recycle) transparent by calling it from our if_free function
* pointer. We have to keep the client's original detach function
* somewhere so we can call it.
*/
static void
ifnet_kpi_free(ifnet_t ifp)
{
if ((ifp->if_refflags & IFRF_EMBRYONIC) == 0) {
ifnet_detached_func detach_func;
detach_func = ifp->if_detach;
if (detach_func != NULL) {
(*detach_func)(ifp);
}
}
ifnet_dispose(ifp);
}
errno_t
ifnet_allocate_common(const struct ifnet_init_params *init,
ifnet_t *ifp, bool is_internal)
{
struct ifnet_init_eparams einit;
bzero(&einit, sizeof(einit));
einit.ver = IFNET_INIT_CURRENT_VERSION;
einit.len = sizeof(einit);
einit.flags = IFNET_INIT_LEGACY | IFNET_INIT_NX_NOAUTO;
if (!is_internal) {
einit.flags |= IFNET_INIT_ALLOC_KPI;
}
einit.uniqueid = init->uniqueid;
einit.uniqueid_len = init->uniqueid_len;
einit.name = init->name;
einit.unit = init->unit;
einit.family = init->family;
einit.type = init->type;
einit.output = init->output;
einit.demux = init->demux;
einit.add_proto = init->add_proto;
einit.del_proto = init->del_proto;
einit.check_multi = init->check_multi;
einit.framer = init->framer;
einit.softc = init->softc;
einit.ioctl = init->ioctl;
einit.set_bpf_tap = init->set_bpf_tap;
einit.detach = init->detach;
einit.event = init->event;
einit.broadcast_addr = init->broadcast_addr;
einit.broadcast_len = init->broadcast_len;
return ifnet_allocate_extended(&einit, ifp);
}
errno_t
ifnet_allocate_internal(const struct ifnet_init_params *init, ifnet_t *ifp)
{
return ifnet_allocate_common(init, ifp, true);
}
errno_t
ifnet_allocate(const struct ifnet_init_params *init, ifnet_t *ifp)
{
return ifnet_allocate_common(init, ifp, false);
}
static void
ifnet_set_broadcast_addr(ifnet_t ifp, const void * broadcast_addr,
u_int32_t broadcast_len)
{
if (broadcast_len == 0 || broadcast_addr == NULL) {
/* no broadcast address */
bzero(&ifp->if_broadcast, sizeof(ifp->if_broadcast));
} else if (broadcast_len > sizeof(ifp->if_broadcast.u.buffer)) {
ifp->if_broadcast.u.ptr
= (u_char *)kalloc_data(broadcast_len,
Z_WAITOK | Z_NOFAIL);
bcopy(broadcast_addr,
ifp->if_broadcast.u.ptr,
broadcast_len);
} else {
bcopy(broadcast_addr,
ifp->if_broadcast.u.buffer,
broadcast_len);
}
ifp->if_broadcast.length = broadcast_len;
}
errno_t
ifnet_allocate_extended(const struct ifnet_init_eparams *einit0,
ifnet_t *interface)
{
#if SKYWALK
ifnet_start_func ostart = NULL;
#endif /* SKYWALK */
struct ifnet_init_eparams einit;
struct ifnet *ifp = NULL;
char if_xname[IFXNAMSIZ] = {0};
int error;
einit = *einit0;
if (einit.ver != IFNET_INIT_CURRENT_VERSION ||
einit.len < sizeof(einit)) {
return EINVAL;
}
if (einit.family == 0 || einit.name == NULL ||
strlen(einit.name) >= IFNAMSIZ ||
(einit.type & 0xFFFFFF00) != 0 || einit.type == 0) {
return EINVAL;
}
#if SKYWALK
/* headroom must be a multiple of 8 bytes */
if ((einit.tx_headroom & 0x7) != 0) {
return EINVAL;
}
if ((einit.flags & IFNET_INIT_SKYWALK_NATIVE) == 0) {
/*
* Currently Interface advisory reporting is supported only
* for skywalk interface.
*/
if ((einit.flags & IFNET_INIT_IF_ADV) != 0) {
return EINVAL;
}
}
#endif /* SKYWALK */
if (einit.flags & IFNET_INIT_LEGACY) {
#if SKYWALK
if (einit.flags & IFNET_INIT_SKYWALK_NATIVE) {
return EINVAL;
}
#endif /* SKYWALK */
if (einit.output == NULL ||
(einit.flags & IFNET_INIT_INPUT_POLL)) {
return EINVAL;
}
einit.pre_enqueue = NULL;
einit.start = NULL;
einit.output_ctl = NULL;
einit.output_sched_model = IFNET_SCHED_MODEL_NORMAL;
einit.input_poll = NULL;
einit.input_ctl = NULL;
} else {
#if SKYWALK
/*
* For native Skywalk drivers, steer all start requests
* to ifp_if_start() until the netif device adapter is
* fully activated, at which point we will point it to
* nx_netif_doorbell().
*/
if (einit.flags & IFNET_INIT_SKYWALK_NATIVE) {
if (einit.start != NULL) {
return EINVAL;
}
/* override output start callback */
ostart = einit.start = ifp_if_start;
} else {
ostart = einit.start;
}
#endif /* SKYWALK */
if (einit.start == NULL) {
return EINVAL;
}
einit.output = NULL;
if (einit.output_sched_model >= IFNET_SCHED_MODEL_MAX) {
return EINVAL;
}
if (einit.flags & IFNET_INIT_INPUT_POLL) {
if (einit.input_poll == NULL || einit.input_ctl == NULL) {
return EINVAL;
}
} else {
einit.input_poll = NULL;
einit.input_ctl = NULL;
}
}
if (einit.type > UCHAR_MAX) {
return EINVAL;
}
if (einit.unit > SHRT_MAX) {
return EINVAL;
}
/* Initialize external name (name + unit) */
(void) snprintf(if_xname, sizeof(if_xname), "%s%d",
einit.name, einit.unit);
if (einit.uniqueid == NULL) {
einit.uniqueid = if_xname;
einit.uniqueid_len = (uint32_t)strlen(if_xname);
}
error = dlil_if_acquire(einit.family, einit.uniqueid,
einit.uniqueid_len, if_xname, &ifp);
if (error == 0) {
uint64_t br;
/*
* Cast ifp->if_name as non const. dlil_if_acquire sets it up
* to point to storage of at least IFNAMSIZ bytes. It is safe
* to write to this.
*/
strlcpy(__DECONST(char *, ifp->if_name), einit.name, IFNAMSIZ);
ifp->if_type = (u_char)einit.type;
ifp->if_family = einit.family;
ifp->if_subfamily = einit.subfamily;
ifp->if_unit = (short)einit.unit;
ifp->if_output = einit.output;
ifp->if_pre_enqueue = einit.pre_enqueue;
ifp->if_start = einit.start;
ifp->if_output_ctl = einit.output_ctl;
ifp->if_output_sched_model = einit.output_sched_model;
ifp->if_output_bw.eff_bw = einit.output_bw;
ifp->if_output_bw.max_bw = einit.output_bw_max;
ifp->if_output_lt.eff_lt = einit.output_lt;
ifp->if_output_lt.max_lt = einit.output_lt_max;
ifp->if_input_poll = einit.input_poll;
ifp->if_input_ctl = einit.input_ctl;
ifp->if_input_bw.eff_bw = einit.input_bw;
ifp->if_input_bw.max_bw = einit.input_bw_max;
ifp->if_input_lt.eff_lt = einit.input_lt;
ifp->if_input_lt.max_lt = einit.input_lt_max;
ifp->if_demux = einit.demux;
ifp->if_add_proto = einit.add_proto;
ifp->if_del_proto = einit.del_proto;
ifp->if_check_multi = einit.check_multi;
ifp->if_framer_legacy = einit.framer;
ifp->if_framer = einit.framer_extended;
ifp->if_softc = einit.softc;
ifp->if_ioctl = einit.ioctl;
ifp->if_set_bpf_tap = einit.set_bpf_tap;
ifp->if_free = (einit.free != NULL) ? einit.free : ifnet_kpi_free;
ifp->if_event = einit.event;
ifp->if_detach = einit.detach;
/* Initialize Network ID */
ifp->network_id_len = 0;
bzero(&ifp->network_id, sizeof(ifp->network_id));
/* Initialize external name (name + unit) */
snprintf(__DECONST(char *, ifp->if_xname), IFXNAMSIZ,
"%s", if_xname);
/*
* On embedded, framer() is already in the extended form;
* we simply use it as is, unless the caller specifies
* framer_extended() which will then override it.
*
* On non-embedded, framer() has long been exposed as part
* of the public KPI, and therefore its signature must
* remain the same (without the pre- and postpend length
* parameters.) We special case ether_frameout, such that
* it gets mapped to its extended variant. All other cases
* utilize the stub routine which will simply return zeroes
* for those new parameters.
*
* Internally, DLIL will only use the extended callback
* variant which is represented by if_framer.
*/
#if !XNU_TARGET_OS_OSX
if (ifp->if_framer == NULL && ifp->if_framer_legacy != NULL) {
ifp->if_framer = ifp->if_framer_legacy;
}
#else /* XNU_TARGET_OS_OSX */
if (ifp->if_framer == NULL && ifp->if_framer_legacy != NULL) {
if (ifp->if_framer_legacy == ether_frameout) {
ifp->if_framer = ether_frameout_extended;
} else {
ifp->if_framer = ifnet_framer_stub;
}
}
#endif /* XNU_TARGET_OS_OSX */
if (ifp->if_output_bw.eff_bw > ifp->if_output_bw.max_bw) {
ifp->if_output_bw.max_bw = ifp->if_output_bw.eff_bw;
} else if (ifp->if_output_bw.eff_bw == 0) {
ifp->if_output_bw.eff_bw = ifp->if_output_bw.max_bw;
}
if (ifp->if_input_bw.eff_bw > ifp->if_input_bw.max_bw) {
ifp->if_input_bw.max_bw = ifp->if_input_bw.eff_bw;
} else if (ifp->if_input_bw.eff_bw == 0) {
ifp->if_input_bw.eff_bw = ifp->if_input_bw.max_bw;
}
if (ifp->if_output_bw.max_bw == 0) {
ifp->if_output_bw = ifp->if_input_bw;
} else if (ifp->if_input_bw.max_bw == 0) {
ifp->if_input_bw = ifp->if_output_bw;
}
/* Pin if_baudrate to 32 bits */
br = MAX(ifp->if_output_bw.max_bw, ifp->if_input_bw.max_bw);
if (br != 0) {
ifp->if_baudrate = (br > UINT32_MAX) ? UINT32_MAX : (uint32_t)br;
}
if (ifp->if_output_lt.eff_lt > ifp->if_output_lt.max_lt) {
ifp->if_output_lt.max_lt = ifp->if_output_lt.eff_lt;
} else if (ifp->if_output_lt.eff_lt == 0) {
ifp->if_output_lt.eff_lt = ifp->if_output_lt.max_lt;
}
if (ifp->if_input_lt.eff_lt > ifp->if_input_lt.max_lt) {
ifp->if_input_lt.max_lt = ifp->if_input_lt.eff_lt;
} else if (ifp->if_input_lt.eff_lt == 0) {
ifp->if_input_lt.eff_lt = ifp->if_input_lt.max_lt;
}
if (ifp->if_output_lt.max_lt == 0) {
ifp->if_output_lt = ifp->if_input_lt;
} else if (ifp->if_input_lt.max_lt == 0) {
ifp->if_input_lt = ifp->if_output_lt;
}
if (ifp->if_ioctl == NULL) {
ifp->if_ioctl = ifp_if_ioctl;
}
if_clear_eflags(ifp, -1);
if (ifp->if_start != NULL) {
if_set_eflags(ifp, IFEF_TXSTART);
if (ifp->if_pre_enqueue == NULL) {
ifp->if_pre_enqueue = ifnet_enqueue;
}
ifp->if_output = ifp->if_pre_enqueue;
}
if (ifp->if_input_poll != NULL) {
if_set_eflags(ifp, IFEF_RXPOLL);
}
ifp->if_output_dlil = dlil_output_handler;
ifp->if_input_dlil = dlil_input_handler;
VERIFY(!(einit.flags & IFNET_INIT_LEGACY) ||
(ifp->if_pre_enqueue == NULL && ifp->if_start == NULL &&
ifp->if_output_ctl == NULL && ifp->if_input_poll == NULL &&
ifp->if_input_ctl == NULL));
VERIFY(!(einit.flags & IFNET_INIT_INPUT_POLL) ||
(ifp->if_input_poll != NULL && ifp->if_input_ctl != NULL));
ifnet_set_broadcast_addr(ifp, einit.broadcast_addr,
einit.broadcast_len);
if_clear_xflags(ifp, -1);
#if SKYWALK
ifp->if_tx_headroom = 0;
ifp->if_tx_trailer = 0;
ifp->if_rx_mit_ival = 0;
ifp->if_save_start = ostart;
if (einit.flags & IFNET_INIT_SKYWALK_NATIVE) {
VERIFY(ifp->if_eflags & IFEF_TXSTART);
VERIFY(!(einit.flags & IFNET_INIT_LEGACY));
if_set_eflags(ifp, IFEF_SKYWALK_NATIVE);
ifp->if_tx_headroom = einit.tx_headroom;
ifp->if_tx_trailer = einit.tx_trailer;
ifp->if_rx_mit_ival = einit.rx_mit_ival;
/*
* For native Skywalk drivers, make sure packets
* emitted by the BSD stack get dropped until the
* interface is in service. When the netif host
* adapter is fully activated, we'll point it to
* nx_netif_output().
*/
ifp->if_output = ifp_if_output;
/*
* Override driver-supplied parameters
* and force IFEF_ENQUEUE_MULTI?
*/
if (sk_netif_native_txmodel ==
NETIF_NATIVE_TXMODEL_ENQUEUE_MULTI) {
einit.start_delay_qlen = sk_tx_delay_qlen;
einit.start_delay_timeout = sk_tx_delay_timeout;
}
/* netif comes with native interfaces */
VERIFY((ifp->if_xflags & IFXF_LEGACY) == 0);
} else if (!ifnet_needs_compat(ifp)) {
/*
* If we're told not to plumb in netif compat
* for this interface, set IFXF_NX_NOAUTO to
* prevent DLIL from auto-attaching the nexus.
*/
einit.flags |= IFNET_INIT_NX_NOAUTO;
/* legacy (non-netif) interface */
if_set_xflags(ifp, IFXF_LEGACY);
}
ifp->if_save_output = ifp->if_output;
if ((einit.flags & IFNET_INIT_NX_NOAUTO) != 0) {
if_set_xflags(ifp, IFXF_NX_NOAUTO);
}
if ((einit.flags & IFNET_INIT_IF_ADV) != 0) {
if_set_eflags(ifp, IFEF_ADV_REPORT);
}
#else /* !SKYWALK */
/* legacy interface */
if_set_xflags(ifp, IFXF_LEGACY);
#endif /* !SKYWALK */
if ((ifp->if_snd = ifclassq_alloc()) == NULL) {
panic_plain("%s: ifp=%p couldn't allocate class queues",
__func__, ifp);
/* NOTREACHED */
}
/*
* output target queue delay is specified in millisecond
* convert it to nanoseconds
*/
IFCQ_TARGET_QDELAY(ifp->if_snd) =
einit.output_target_qdelay * 1000 * 1000;
IFCQ_MAXLEN(ifp->if_snd) = einit.sndq_maxlen;
ifnet_enqueue_multi_setup(ifp, einit.start_delay_qlen,
einit.start_delay_timeout);
IFCQ_PKT_DROP_LIMIT(ifp->if_snd) = IFCQ_DEFAULT_PKT_DROP_LIMIT;
/*
* Set embryonic flag; this will be cleared
* later when it is fully attached.
*/
ifp->if_refflags = IFRF_EMBRYONIC;
/*
* Count the newly allocated ifnet
*/
OSIncrementAtomic64(&net_api_stats.nas_ifnet_alloc_count);
INC_ATOMIC_INT64_LIM(net_api_stats.nas_ifnet_alloc_total);
if ((einit.flags & IFNET_INIT_ALLOC_KPI) != 0) {
if_set_xflags(ifp, IFXF_ALLOC_KPI);
} else {
OSIncrementAtomic64(
&net_api_stats.nas_ifnet_alloc_os_count);
INC_ATOMIC_INT64_LIM(
net_api_stats.nas_ifnet_alloc_os_total);
}
if (ifp->if_subfamily == IFNET_SUBFAMILY_MANAGEMENT) {
if_set_xflags(ifp, IFXF_MANAGEMENT);
if_management_interface_check_needed = true;
}
/*
* Increment the generation count on interface creation
*/
ifp->if_creation_generation_id = os_atomic_inc(&if_creation_generation_count, relaxed);
*interface = ifp;
}
return error;
}
errno_t
ifnet_reference(ifnet_t ifp)
{
return dlil_if_ref(ifp);
}
void
ifnet_dispose(ifnet_t ifp)
{
dlil_if_release(ifp);
}
errno_t
ifnet_release(ifnet_t ifp)
{
return dlil_if_free(ifp);
}
errno_t
ifnet_interface_family_find(const char *module_string,
ifnet_family_t *family_id)
{
if (module_string == NULL || family_id == NULL) {
return EINVAL;
}
return net_str_id_find_internal(module_string, family_id,
NSI_IF_FAM_ID, 1);
}
void *
ifnet_softc(ifnet_t interface)
{
return (interface == NULL) ? NULL : interface->if_softc;
}
const char *
ifnet_name(ifnet_t interface)
{
return (interface == NULL) ? NULL : interface->if_name;
}
ifnet_family_t
ifnet_family(ifnet_t interface)
{
return (interface == NULL) ? 0 : interface->if_family;
}
ifnet_subfamily_t
ifnet_subfamily(ifnet_t interface)
{
return (interface == NULL) ? 0 : interface->if_subfamily;
}
u_int32_t
ifnet_unit(ifnet_t interface)
{
return (interface == NULL) ? (u_int32_t)0xffffffff :
(u_int32_t)interface->if_unit;
}
u_int32_t
ifnet_index(ifnet_t interface)
{
return (interface == NULL) ? (u_int32_t)0xffffffff :
interface->if_index;
}
errno_t
ifnet_set_flags(ifnet_t interface, u_int16_t new_flags, u_int16_t mask)
{
bool set_IFF_UP;
bool change_IFF_UP;
uint16_t old_flags;
if (interface == NULL) {
return EINVAL;
}
set_IFF_UP = (new_flags & IFF_UP) != 0;
change_IFF_UP = (mask & IFF_UP) != 0;
#if SKYWALK
if (set_IFF_UP && change_IFF_UP) {
/*
* When a native skywalk interface is marked IFF_UP, ensure
* the flowswitch is attached.
*/
ifnet_attach_native_flowswitch(interface);
}
#endif /* SKYWALK */
ifnet_lock_exclusive(interface);
/* If we are modifying the up/down state, call if_updown */
if (change_IFF_UP) {
if_updown(interface, set_IFF_UP);
}
old_flags = interface->if_flags;
interface->if_flags = (new_flags & mask) | (interface->if_flags & ~mask);
/* If we are modifying the multicast flag, set/unset the silent flag */
if ((old_flags & IFF_MULTICAST) !=
(interface->if_flags & IFF_MULTICAST)) {
#if INET
if (IGMP_IFINFO(interface) != NULL) {
igmp_initsilent(interface, IGMP_IFINFO(interface));
}
#endif /* INET */
if (MLD_IFINFO(interface) != NULL) {
mld6_initsilent(interface, MLD_IFINFO(interface));
}
}
ifnet_lock_done(interface);
return 0;
}
u_int16_t
ifnet_flags(ifnet_t interface)
{
return (interface == NULL) ? 0 : interface->if_flags;
}
/*
* This routine ensures the following:
*
* If IFEF_AWDL is set by the caller, also set the rest of flags as
* defined in IFEF_AWDL_MASK.
*
* If IFEF_AWDL has been set on the interface and the caller attempts
* to clear one or more of the associated flags in IFEF_AWDL_MASK,
* return failure.
*
* If IFEF_AWDL_RESTRICTED is set by the caller, make sure IFEF_AWDL is set
* on the interface.
*
* All other flags not associated with AWDL are not affected.
*
* See <net/if.h> for current definition of IFEF_AWDL_MASK.
*/
static errno_t
ifnet_awdl_check_eflags(ifnet_t ifp, u_int32_t *new_eflags, u_int32_t *mask)
{
u_int32_t eflags;
ifnet_lock_assert(ifp, IFNET_LCK_ASSERT_EXCLUSIVE);
eflags = (*new_eflags & *mask) | (ifp->if_eflags & ~(*mask));
if (ifp->if_eflags & IFEF_AWDL) {
if (eflags & IFEF_AWDL) {
if ((eflags & IFEF_AWDL_MASK) != IFEF_AWDL_MASK) {
return EINVAL;
}
} else {
*new_eflags &= ~IFEF_AWDL_MASK;
*mask |= IFEF_AWDL_MASK;
}
} else if (eflags & IFEF_AWDL) {
*new_eflags |= IFEF_AWDL_MASK;
*mask |= IFEF_AWDL_MASK;
} else if (eflags & IFEF_AWDL_RESTRICTED &&
!(ifp->if_eflags & IFEF_AWDL)) {
return EINVAL;
}
return 0;
}
errno_t
ifnet_set_eflags(ifnet_t interface, u_int32_t new_flags, u_int32_t mask)
{
uint32_t oeflags;
struct kev_msg ev_msg;
struct net_event_data ev_data;
if (interface == NULL) {
return EINVAL;
}
bzero(&ev_msg, sizeof(ev_msg));
ifnet_lock_exclusive(interface);
/*
* Sanity checks for IFEF_AWDL and its related flags.
*/
if (ifnet_awdl_check_eflags(interface, &new_flags, &mask) != 0) {
ifnet_lock_done(interface);
return EINVAL;
}
/*
* Currently Interface advisory reporting is supported only for
* skywalk interface.
*/
if ((((new_flags & mask) & IFEF_ADV_REPORT) != 0) &&
((interface->if_eflags & IFEF_SKYWALK_NATIVE) == 0)) {
ifnet_lock_done(interface);
return EINVAL;
}
oeflags = interface->if_eflags;
if_clear_eflags(interface, mask);
if (new_flags != 0) {
if_set_eflags(interface, (new_flags & mask));
}
ifnet_lock_done(interface);
if (interface->if_eflags & IFEF_AWDL_RESTRICTED &&
!(oeflags & IFEF_AWDL_RESTRICTED)) {
ev_msg.event_code = KEV_DL_AWDL_RESTRICTED;
/*
* The interface is now restricted to applications that have
* the entitlement.
* The check for the entitlement will be done in the data
* path, so we don't have to do anything here.
*/
} else if (oeflags & IFEF_AWDL_RESTRICTED &&
!(interface->if_eflags & IFEF_AWDL_RESTRICTED)) {
ev_msg.event_code = KEV_DL_AWDL_UNRESTRICTED;
}
/*
* Notify configd so that it has a chance to perform better
* reachability detection.
*/
if (ev_msg.event_code) {
bzero(&ev_data, sizeof(ev_data));
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, interface->if_name, IFNAMSIZ);
ev_data.if_family = interface->if_family;
ev_data.if_unit = interface->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(interface, &ev_msg);
}
return 0;
}
u_int32_t
ifnet_eflags(ifnet_t interface)
{
return (interface == NULL) ? 0 : interface->if_eflags;
}
errno_t
ifnet_set_idle_flags_locked(ifnet_t ifp, u_int32_t new_flags, u_int32_t mask)
{
if (ifp == NULL) {
return EINVAL;
}
ifnet_lock_assert(ifp, IFNET_LCK_ASSERT_EXCLUSIVE);
/*
* If this is called prior to ifnet attach, the actual work will
* be done at attach time. Otherwise, if it is called after
* ifnet detach, then it is a no-op.
*/
if (!ifnet_is_attached(ifp, 0)) {
ifp->if_idle_new_flags = new_flags;
ifp->if_idle_new_flags_mask = mask;
return 0;
} else {
ifp->if_idle_new_flags = ifp->if_idle_new_flags_mask = 0;
}
ifp->if_idle_flags = (new_flags & mask) | (ifp->if_idle_flags & ~mask);
return 0;
}
errno_t
ifnet_set_idle_flags(ifnet_t ifp, u_int32_t new_flags, u_int32_t mask)
{
errno_t err;
ifnet_lock_exclusive(ifp);
err = ifnet_set_idle_flags_locked(ifp, new_flags, mask);
ifnet_lock_done(ifp);
return err;
}
u_int32_t
ifnet_idle_flags(ifnet_t ifp)
{
return (ifp == NULL) ? 0 : ifp->if_idle_flags;
}
errno_t
ifnet_set_link_quality(ifnet_t ifp, int quality)
{
errno_t err = 0;
if (ifp == NULL || quality < IFNET_LQM_MIN || quality > IFNET_LQM_MAX) {
err = EINVAL;
goto done;
}
if (!ifnet_is_attached(ifp, 0)) {
err = ENXIO;
goto done;
}
if_lqm_update(ifp, quality, 0);
done:
return err;
}
int
ifnet_link_quality(ifnet_t ifp)
{
int lqm;
if (ifp == NULL) {
return IFNET_LQM_THRESH_OFF;
}
ifnet_lock_shared(ifp);
lqm = ifp->if_interface_state.lqm_state;
ifnet_lock_done(ifp);
return lqm;
}
errno_t
ifnet_set_interface_state(ifnet_t ifp,
struct if_interface_state *if_interface_state)
{
errno_t err = 0;
if (ifp == NULL || if_interface_state == NULL) {
err = EINVAL;
goto done;
}
if (!ifnet_is_attached(ifp, 0)) {
err = ENXIO;
goto done;
}
if_state_update(ifp, if_interface_state);
done:
return err;
}
errno_t
ifnet_get_interface_state(ifnet_t ifp,
struct if_interface_state *if_interface_state)
{
errno_t err = 0;
if (ifp == NULL || if_interface_state == NULL) {
err = EINVAL;
goto done;
}
if (!ifnet_is_attached(ifp, 0)) {
err = ENXIO;
goto done;
}
if_get_state(ifp, if_interface_state);
done:
return err;
}
static errno_t
ifnet_defrouter_llreachinfo(ifnet_t ifp, sa_family_t af,
struct ifnet_llreach_info *iflri)
{
if (ifp == NULL || iflri == NULL) {
return EINVAL;
}
VERIFY(af == AF_INET || af == AF_INET6);
return ifnet_llreach_get_defrouter(ifp, af, iflri);
}
errno_t
ifnet_inet_defrouter_llreachinfo(ifnet_t ifp, struct ifnet_llreach_info *iflri)
{
return ifnet_defrouter_llreachinfo(ifp, AF_INET, iflri);
}
errno_t
ifnet_inet6_defrouter_llreachinfo(ifnet_t ifp, struct ifnet_llreach_info *iflri)
{
return ifnet_defrouter_llreachinfo(ifp, AF_INET6, iflri);
}
errno_t
ifnet_set_capabilities_supported(ifnet_t ifp, u_int32_t new_caps,
u_int32_t mask)
{
errno_t error = 0;
int tmp;
if (ifp == NULL) {
return EINVAL;
}
ifnet_lock_exclusive(ifp);
tmp = (new_caps & mask) | (ifp->if_capabilities & ~mask);
if ((tmp & ~IFCAP_VALID)) {
error = EINVAL;
} else {
ifp->if_capabilities = tmp;
}
ifnet_lock_done(ifp);
return error;
}
u_int32_t
ifnet_capabilities_supported(ifnet_t ifp)
{
return (ifp == NULL) ? 0 : ifp->if_capabilities;
}
errno_t
ifnet_set_capabilities_enabled(ifnet_t ifp, u_int32_t new_caps,
u_int32_t mask)
{
errno_t error = 0;
int tmp;
struct kev_msg ev_msg;
struct net_event_data ev_data;
if (ifp == NULL) {
return EINVAL;
}
ifnet_lock_exclusive(ifp);
tmp = (new_caps & mask) | (ifp->if_capenable & ~mask);
if ((tmp & ~IFCAP_VALID) || (tmp & ~ifp->if_capabilities)) {
error = EINVAL;
} else {
ifp->if_capenable = tmp;
}
ifnet_lock_done(ifp);
/* Notify application of the change */
bzero(&ev_data, sizeof(struct net_event_data));
bzero(&ev_msg, sizeof(struct kev_msg));
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_IFCAP_CHANGED;
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);
return error;
}
u_int32_t
ifnet_capabilities_enabled(ifnet_t ifp)
{
return (ifp == NULL) ? 0 : ifp->if_capenable;
}
static const ifnet_offload_t offload_mask =
(IFNET_CSUM_IP | IFNET_CSUM_TCP | IFNET_CSUM_UDP | IFNET_CSUM_FRAGMENT |
IFNET_IP_FRAGMENT | IFNET_CSUM_TCPIPV6 | IFNET_CSUM_UDPIPV6 |
IFNET_IPV6_FRAGMENT | IFNET_CSUM_PARTIAL | IFNET_CSUM_ZERO_INVERT |
IFNET_VLAN_TAGGING | IFNET_VLAN_MTU | IFNET_MULTIPAGES |
IFNET_TSO_IPV4 | IFNET_TSO_IPV6 | IFNET_TX_STATUS | IFNET_HW_TIMESTAMP |
IFNET_SW_TIMESTAMP);
static const ifnet_offload_t any_offload_csum = IFNET_CHECKSUMF;
static errno_t
ifnet_set_offload_common(ifnet_t interface, ifnet_offload_t offload, boolean_t set_both)
{
u_int32_t ifcaps = 0;
if (interface == NULL) {
return EINVAL;
}
ifnet_lock_exclusive(interface);
interface->if_hwassist = (offload & offload_mask);
#if SKYWALK
/* preserve skywalk capability */
if ((interface->if_capabilities & IFCAP_SKYWALK) != 0) {
ifcaps |= IFCAP_SKYWALK;
}
#endif /* SKYWALK */
if (dlil_verbose) {
log(LOG_DEBUG, "%s: set offload flags=0x%x\n",
if_name(interface),
interface->if_hwassist);
}
ifnet_lock_done(interface);
if ((offload & any_offload_csum)) {
ifcaps |= IFCAP_HWCSUM;
}
if ((offload & IFNET_TSO_IPV4)) {
ifcaps |= IFCAP_TSO4;
}
if ((offload & IFNET_TSO_IPV6)) {
ifcaps |= IFCAP_TSO6;
}
if ((offload & IFNET_LRO)) {
ifcaps |= IFCAP_LRO;
}
if ((offload & IFNET_VLAN_MTU)) {
ifcaps |= IFCAP_VLAN_MTU;
}
if ((offload & IFNET_VLAN_TAGGING)) {
ifcaps |= IFCAP_VLAN_HWTAGGING;
}
if ((offload & IFNET_TX_STATUS)) {
ifcaps |= IFCAP_TXSTATUS;
}
if ((offload & IFNET_HW_TIMESTAMP)) {
ifcaps |= IFCAP_HW_TIMESTAMP;
}
if ((offload & IFNET_SW_TIMESTAMP)) {
ifcaps |= IFCAP_SW_TIMESTAMP;
}
if ((offload & IFNET_CSUM_PARTIAL)) {
ifcaps |= IFCAP_CSUM_PARTIAL;
}
if ((offload & IFNET_CSUM_ZERO_INVERT)) {
ifcaps |= IFCAP_CSUM_ZERO_INVERT;
}
if (ifcaps != 0) {
if (set_both) {
(void) ifnet_set_capabilities_supported(interface,
ifcaps, IFCAP_VALID);
}
(void) ifnet_set_capabilities_enabled(interface, ifcaps,
IFCAP_VALID);
}
return 0;
}
errno_t
ifnet_set_offload(ifnet_t interface, ifnet_offload_t offload)
{
return ifnet_set_offload_common(interface, offload, TRUE);
}
errno_t
ifnet_set_offload_enabled(ifnet_t interface, ifnet_offload_t offload)
{
return ifnet_set_offload_common(interface, offload, FALSE);
}
ifnet_offload_t
ifnet_offload(ifnet_t interface)
{
return (interface == NULL) ?
0 : (interface->if_hwassist & offload_mask);
}
errno_t
ifnet_set_tso_mtu(ifnet_t interface, sa_family_t family, u_int32_t mtuLen)
{
errno_t error = 0;
if (interface == NULL || mtuLen < interface->if_mtu) {
return EINVAL;
}
if (mtuLen > IP_MAXPACKET) {
return EINVAL;
}
switch (family) {
case AF_INET:
if (interface->if_hwassist & IFNET_TSO_IPV4) {
interface->if_tso_v4_mtu = mtuLen;
} else {
error = EINVAL;
}
break;
case AF_INET6:
if (interface->if_hwassist & IFNET_TSO_IPV6) {
interface->if_tso_v6_mtu = mtuLen;
} else {
error = EINVAL;
}
break;
default:
error = EPROTONOSUPPORT;
break;
}
if (error == 0) {
struct ifclassq *ifq = interface->if_snd;
ASSERT(ifq != NULL);
/* Inform all transmit queues about the new TSO MTU */
IFCQ_LOCK(ifq);
ifnet_update_sndq(ifq, CLASSQ_EV_LINK_MTU);
IFCQ_UNLOCK(ifq);
}
return error;
}
errno_t
ifnet_get_tso_mtu(ifnet_t interface, sa_family_t family, u_int32_t *mtuLen)
{
errno_t error = 0;
if (interface == NULL || mtuLen == NULL) {
return EINVAL;
}
switch (family) {
case AF_INET:
if (interface->if_hwassist & IFNET_TSO_IPV4) {
*mtuLen = interface->if_tso_v4_mtu;
} else {
error = EINVAL;
}
break;
case AF_INET6:
if (interface->if_hwassist & IFNET_TSO_IPV6) {
*mtuLen = interface->if_tso_v6_mtu;
} else {
error = EINVAL;
}
break;
default:
error = EPROTONOSUPPORT;
break;
}
return error;
}
errno_t
ifnet_set_wake_flags(ifnet_t interface, u_int32_t properties, u_int32_t mask)
{
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));
if (interface == NULL) {
return EINVAL;
}
/* Do not accept wacky values */
if ((properties & mask) & ~IF_WAKE_VALID_FLAGS) {
return EINVAL;
}
if ((mask & IF_WAKE_ON_MAGIC_PACKET) != 0) {
if ((properties & IF_WAKE_ON_MAGIC_PACKET) != 0) {
if_set_xflags(interface, IFXF_WAKE_ON_MAGIC_PACKET);
} else {
if_clear_xflags(interface, IFXF_WAKE_ON_MAGIC_PACKET);
}
}
(void) ifnet_touch_lastchange(interface);
/* Notify application of the change */
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_WAKEFLAGS_CHANGED;
strlcpy(&ev_data.if_name[0], interface->if_name, IFNAMSIZ);
ev_data.if_family = interface->if_family;
ev_data.if_unit = (u_int32_t)interface->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(interface, &ev_msg);
return 0;
}
u_int32_t
ifnet_get_wake_flags(ifnet_t interface)
{
u_int32_t flags = 0;
if (interface == NULL) {
return 0;
}
if ((interface->if_xflags & IFXF_WAKE_ON_MAGIC_PACKET) != 0) {
flags |= IF_WAKE_ON_MAGIC_PACKET;
}
return flags;
}
/*
* Should MIB data store a copy?
*/
errno_t
ifnet_set_link_mib_data(ifnet_t interface, void *mibData, uint32_t mibLen)
{
if (interface == NULL) {
return EINVAL;
}
ifnet_lock_exclusive(interface);
interface->if_linkmib = (void*)mibData;
interface->if_linkmiblen = mibLen;
ifnet_lock_done(interface);
return 0;
}
errno_t
ifnet_get_link_mib_data(ifnet_t interface, void *mibData, uint32_t *mibLen)
{
errno_t result = 0;
if (interface == NULL) {
return EINVAL;
}
ifnet_lock_shared(interface);
if (*mibLen < interface->if_linkmiblen) {
result = EMSGSIZE;
}
if (result == 0 && interface->if_linkmib == NULL) {
result = ENOTSUP;
}
if (result == 0) {
*mibLen = interface->if_linkmiblen;
bcopy(interface->if_linkmib, mibData, *mibLen);
}
ifnet_lock_done(interface);
return result;
}
uint32_t
ifnet_get_link_mib_data_length(ifnet_t interface)
{
return (interface == NULL) ? 0 : interface->if_linkmiblen;
}
errno_t
ifnet_output(ifnet_t interface, protocol_family_t protocol_family,
mbuf_t m, void *route, const struct sockaddr *dest)
{
if (interface == NULL || protocol_family == 0 || m == NULL) {
if (m != NULL) {
mbuf_freem_list(m);
}
return EINVAL;
}
return dlil_output(interface, protocol_family, m, route, dest, 0, NULL);
}
errno_t
ifnet_output_raw(ifnet_t interface, protocol_family_t protocol_family, mbuf_t m)
{
if (interface == NULL || m == NULL) {
if (m != NULL) {
mbuf_freem_list(m);
}
return EINVAL;
}
return dlil_output(interface, protocol_family, m, NULL, NULL, 1, NULL);
}
errno_t
ifnet_set_mtu(ifnet_t interface, u_int32_t mtu)
{
if (interface == NULL) {
return EINVAL;
}
interface->if_mtu = mtu;
return 0;
}
u_int32_t
ifnet_mtu(ifnet_t interface)
{
return (interface == NULL) ? 0 : interface->if_mtu;
}
u_char
ifnet_type(ifnet_t interface)
{
return (interface == NULL) ? 0 : interface->if_data.ifi_type;
}
errno_t
ifnet_set_addrlen(ifnet_t interface, u_char addrlen)
{
if (interface == NULL) {
return EINVAL;
}
interface->if_data.ifi_addrlen = addrlen;
return 0;
}
u_char
ifnet_addrlen(ifnet_t interface)
{
return (interface == NULL) ? 0 : interface->if_data.ifi_addrlen;
}
errno_t
ifnet_set_hdrlen(ifnet_t interface, u_char hdrlen)
{
if (interface == NULL) {
return EINVAL;
}
interface->if_data.ifi_hdrlen = hdrlen;
return 0;
}
u_char
ifnet_hdrlen(ifnet_t interface)
{
return (interface == NULL) ? 0 : interface->if_data.ifi_hdrlen;
}
errno_t
ifnet_set_metric(ifnet_t interface, u_int32_t metric)
{
if (interface == NULL) {
return EINVAL;
}
interface->if_data.ifi_metric = metric;
return 0;
}
u_int32_t
ifnet_metric(ifnet_t interface)
{
return (interface == NULL) ? 0 : interface->if_data.ifi_metric;
}
errno_t
ifnet_set_baudrate(struct ifnet *ifp, uint64_t baudrate)
{
if (ifp == NULL) {
return EINVAL;
}
ifp->if_output_bw.max_bw = ifp->if_input_bw.max_bw =
ifp->if_output_bw.eff_bw = ifp->if_input_bw.eff_bw = baudrate;
/* Pin if_baudrate to 32 bits until we can change the storage size */
ifp->if_baudrate = (baudrate > UINT32_MAX) ? UINT32_MAX : (uint32_t)baudrate;
return 0;
}
u_int64_t
ifnet_baudrate(struct ifnet *ifp)
{
return (ifp == NULL) ? 0 : ifp->if_baudrate;
}
errno_t
ifnet_set_bandwidths(struct ifnet *ifp, struct if_bandwidths *output_bw,
struct if_bandwidths *input_bw)
{
if (ifp == NULL) {
return EINVAL;
}
/* set input values first (if any), as output values depend on them */
if (input_bw != NULL) {
(void) ifnet_set_input_bandwidths(ifp, input_bw);
}
if (output_bw != NULL) {
(void) ifnet_set_output_bandwidths(ifp, output_bw, FALSE);
}
return 0;
}
static void
ifnet_set_link_status_outbw(struct ifnet *ifp)
{
struct if_wifi_status_v1 *sr;
sr = &ifp->if_link_status->ifsr_u.ifsr_wifi.if_wifi_u.if_status_v1;
if (ifp->if_output_bw.eff_bw != 0) {
sr->valid_bitmask |=
IF_WIFI_UL_EFFECTIVE_BANDWIDTH_VALID;
sr->ul_effective_bandwidth =
ifp->if_output_bw.eff_bw > UINT32_MAX ?
UINT32_MAX :
(uint32_t)ifp->if_output_bw.eff_bw;
}
if (ifp->if_output_bw.max_bw != 0) {
sr->valid_bitmask |=
IF_WIFI_UL_MAX_BANDWIDTH_VALID;
sr->ul_max_bandwidth =
ifp->if_output_bw.max_bw > UINT32_MAX ?
UINT32_MAX :
(uint32_t)ifp->if_output_bw.max_bw;
}
}
errno_t
ifnet_set_output_bandwidths(struct ifnet *ifp, struct if_bandwidths *bw,
boolean_t locked)
{
struct if_bandwidths old_bw;
struct ifclassq *ifq;
u_int64_t br;
VERIFY(ifp != NULL && bw != NULL);
ifq = ifp->if_snd;
if (!locked) {
IFCQ_LOCK(ifq);
}
IFCQ_LOCK_ASSERT_HELD(ifq);
old_bw = ifp->if_output_bw;
if (bw->eff_bw != 0) {
ifp->if_output_bw.eff_bw = bw->eff_bw;
}
if (bw->max_bw != 0) {
ifp->if_output_bw.max_bw = bw->max_bw;
}
if (ifp->if_output_bw.eff_bw > ifp->if_output_bw.max_bw) {
ifp->if_output_bw.max_bw = ifp->if_output_bw.eff_bw;
} else if (ifp->if_output_bw.eff_bw == 0) {
ifp->if_output_bw.eff_bw = ifp->if_output_bw.max_bw;
}
/* Pin if_baudrate to 32 bits */
br = MAX(ifp->if_output_bw.max_bw, ifp->if_input_bw.max_bw);
if (br != 0) {
ifp->if_baudrate = (br > UINT32_MAX) ? UINT32_MAX : (uint32_t)br;
}
/* Adjust queue parameters if needed */
if (old_bw.eff_bw != ifp->if_output_bw.eff_bw ||
old_bw.max_bw != ifp->if_output_bw.max_bw) {
ifnet_update_sndq(ifq, CLASSQ_EV_LINK_BANDWIDTH);
}
if (!locked) {
IFCQ_UNLOCK(ifq);
}
/*
* If this is a Wifi interface, update the values in
* if_link_status structure also.
*/
if (IFNET_IS_WIFI(ifp) && ifp->if_link_status != NULL) {
lck_rw_lock_exclusive(&ifp->if_link_status_lock);
ifnet_set_link_status_outbw(ifp);
lck_rw_done(&ifp->if_link_status_lock);
}
return 0;
}
static void
ifnet_set_link_status_inbw(struct ifnet *ifp)
{
struct if_wifi_status_v1 *sr;
sr = &ifp->if_link_status->ifsr_u.ifsr_wifi.if_wifi_u.if_status_v1;
if (ifp->if_input_bw.eff_bw != 0) {
sr->valid_bitmask |=
IF_WIFI_DL_EFFECTIVE_BANDWIDTH_VALID;
sr->dl_effective_bandwidth =
ifp->if_input_bw.eff_bw > UINT32_MAX ?
UINT32_MAX :
(uint32_t)ifp->if_input_bw.eff_bw;
}
if (ifp->if_input_bw.max_bw != 0) {
sr->valid_bitmask |=
IF_WIFI_DL_MAX_BANDWIDTH_VALID;
sr->dl_max_bandwidth = ifp->if_input_bw.max_bw > UINT32_MAX ?
UINT32_MAX :
(uint32_t)ifp->if_input_bw.max_bw;
}
}
errno_t
ifnet_set_input_bandwidths(struct ifnet *ifp, struct if_bandwidths *bw)
{
struct if_bandwidths old_bw;
VERIFY(ifp != NULL && bw != NULL);
old_bw = ifp->if_input_bw;
if (bw->eff_bw != 0) {
ifp->if_input_bw.eff_bw = bw->eff_bw;
}
if (bw->max_bw != 0) {
ifp->if_input_bw.max_bw = bw->max_bw;
}
if (ifp->if_input_bw.eff_bw > ifp->if_input_bw.max_bw) {
ifp->if_input_bw.max_bw = ifp->if_input_bw.eff_bw;
} else if (ifp->if_input_bw.eff_bw == 0) {
ifp->if_input_bw.eff_bw = ifp->if_input_bw.max_bw;
}
if (IFNET_IS_WIFI(ifp) && ifp->if_link_status != NULL) {
lck_rw_lock_exclusive(&ifp->if_link_status_lock);
ifnet_set_link_status_inbw(ifp);
lck_rw_done(&ifp->if_link_status_lock);
}
if (old_bw.eff_bw != ifp->if_input_bw.eff_bw ||
old_bw.max_bw != ifp->if_input_bw.max_bw) {
ifnet_update_rcv(ifp, CLASSQ_EV_LINK_BANDWIDTH);
}
return 0;
}
u_int64_t
ifnet_output_linkrate(struct ifnet *ifp)
{
struct ifclassq *ifq = ifp->if_snd;
u_int64_t rate;
IFCQ_LOCK_ASSERT_HELD(ifq);
rate = ifp->if_output_bw.eff_bw;
if (IFCQ_TBR_IS_ENABLED(ifq)) {
u_int64_t tbr_rate = ifq->ifcq_tbr.tbr_rate_raw;
VERIFY(tbr_rate > 0);
rate = MIN(rate, ifq->ifcq_tbr.tbr_rate_raw);
}
return rate;
}
u_int64_t
ifnet_input_linkrate(struct ifnet *ifp)
{
return ifp->if_input_bw.eff_bw;
}
errno_t
ifnet_bandwidths(struct ifnet *ifp, struct if_bandwidths *output_bw,
struct if_bandwidths *input_bw)
{
if (ifp == NULL) {
return EINVAL;
}
if (output_bw != NULL) {
*output_bw = ifp->if_output_bw;
}
if (input_bw != NULL) {
*input_bw = ifp->if_input_bw;
}
return 0;
}
errno_t
ifnet_set_latencies(struct ifnet *ifp, struct if_latencies *output_lt,
struct if_latencies *input_lt)
{
if (ifp == NULL) {
return EINVAL;
}
if (output_lt != NULL) {
(void) ifnet_set_output_latencies(ifp, output_lt, FALSE);
}
if (input_lt != NULL) {
(void) ifnet_set_input_latencies(ifp, input_lt);
}
return 0;
}
errno_t
ifnet_set_output_latencies(struct ifnet *ifp, struct if_latencies *lt,
boolean_t locked)
{
struct if_latencies old_lt;
struct ifclassq *ifq;
VERIFY(ifp != NULL && lt != NULL);
ifq = ifp->if_snd;
if (!locked) {
IFCQ_LOCK(ifq);
}
IFCQ_LOCK_ASSERT_HELD(ifq);
old_lt = ifp->if_output_lt;
if (lt->eff_lt != 0) {
ifp->if_output_lt.eff_lt = lt->eff_lt;
}
if (lt->max_lt != 0) {
ifp->if_output_lt.max_lt = lt->max_lt;
}
if (ifp->if_output_lt.eff_lt > ifp->if_output_lt.max_lt) {
ifp->if_output_lt.max_lt = ifp->if_output_lt.eff_lt;
} else if (ifp->if_output_lt.eff_lt == 0) {
ifp->if_output_lt.eff_lt = ifp->if_output_lt.max_lt;
}
/* Adjust queue parameters if needed */
if (old_lt.eff_lt != ifp->if_output_lt.eff_lt ||
old_lt.max_lt != ifp->if_output_lt.max_lt) {
ifnet_update_sndq(ifq, CLASSQ_EV_LINK_LATENCY);
}
if (!locked) {
IFCQ_UNLOCK(ifq);
}
return 0;
}
errno_t
ifnet_set_input_latencies(struct ifnet *ifp, struct if_latencies *lt)
{
struct if_latencies old_lt;
VERIFY(ifp != NULL && lt != NULL);
old_lt = ifp->if_input_lt;
if (lt->eff_lt != 0) {
ifp->if_input_lt.eff_lt = lt->eff_lt;
}
if (lt->max_lt != 0) {
ifp->if_input_lt.max_lt = lt->max_lt;
}
if (ifp->if_input_lt.eff_lt > ifp->if_input_lt.max_lt) {
ifp->if_input_lt.max_lt = ifp->if_input_lt.eff_lt;
} else if (ifp->if_input_lt.eff_lt == 0) {
ifp->if_input_lt.eff_lt = ifp->if_input_lt.max_lt;
}
if (old_lt.eff_lt != ifp->if_input_lt.eff_lt ||
old_lt.max_lt != ifp->if_input_lt.max_lt) {
ifnet_update_rcv(ifp, CLASSQ_EV_LINK_LATENCY);
}
return 0;
}
errno_t
ifnet_latencies(struct ifnet *ifp, struct if_latencies *output_lt,
struct if_latencies *input_lt)
{
if (ifp == NULL) {
return EINVAL;
}
if (output_lt != NULL) {
*output_lt = ifp->if_output_lt;
}
if (input_lt != NULL) {
*input_lt = ifp->if_input_lt;
}
return 0;
}
errno_t
ifnet_set_poll_params(struct ifnet *ifp, struct ifnet_poll_params *p)
{
errno_t err;
if (ifp == NULL) {
return EINVAL;
} else if (!ifnet_is_attached(ifp, 1)) {
return ENXIO;
}
#if SKYWALK
if (SKYWALK_CAPABLE(ifp)) {
err = netif_rxpoll_set_params(ifp, p, FALSE);
ifnet_decr_iorefcnt(ifp);
return err;
}
#endif /* SKYWALK */
err = dlil_rxpoll_set_params(ifp, p, FALSE);
/* Release the io ref count */
ifnet_decr_iorefcnt(ifp);
return err;
}
errno_t
ifnet_poll_params(struct ifnet *ifp, struct ifnet_poll_params *p)
{
errno_t err;
if (ifp == NULL || p == NULL) {
return EINVAL;
} else if (!ifnet_is_attached(ifp, 1)) {
return ENXIO;
}
err = dlil_rxpoll_get_params(ifp, p);
/* Release the io ref count */
ifnet_decr_iorefcnt(ifp);
return err;
}
errno_t
ifnet_stat_increment(struct ifnet *ifp,
const struct ifnet_stat_increment_param *s)
{
if (ifp == NULL) {
return EINVAL;
}
if (s->packets_in != 0) {
os_atomic_add(&ifp->if_data.ifi_ipackets, s->packets_in, relaxed);
}
if (s->bytes_in != 0) {
os_atomic_add(&ifp->if_data.ifi_ibytes, s->bytes_in, relaxed);
}
if (s->errors_in != 0) {
os_atomic_add(&ifp->if_data.ifi_ierrors, s->errors_in, relaxed);
}
if (s->packets_out != 0) {
os_atomic_add(&ifp->if_data.ifi_opackets, s->packets_out, relaxed);
}
if (s->bytes_out != 0) {
os_atomic_add(&ifp->if_data.ifi_obytes, s->bytes_out, relaxed);
}
if (s->errors_out != 0) {
os_atomic_add(&ifp->if_data.ifi_oerrors, s->errors_out, relaxed);
}
if (s->collisions != 0) {
os_atomic_add(&ifp->if_data.ifi_collisions, s->collisions, relaxed);
}
if (s->dropped != 0) {
os_atomic_add(&ifp->if_data.ifi_iqdrops, s->dropped, relaxed);
}
/* Touch the last change time. */
TOUCHLASTCHANGE(&ifp->if_lastchange);
if (ifp->if_data_threshold != 0) {
ifnet_notify_data_threshold(ifp);
}
return 0;
}
errno_t
ifnet_stat_increment_in(struct ifnet *ifp, u_int32_t packets_in,
u_int32_t bytes_in, u_int32_t errors_in)
{
if (ifp == NULL) {
return EINVAL;
}
if (packets_in != 0) {
os_atomic_add(&ifp->if_data.ifi_ipackets, packets_in, relaxed);
}
if (bytes_in != 0) {
os_atomic_add(&ifp->if_data.ifi_ibytes, bytes_in, relaxed);
}
if (errors_in != 0) {
os_atomic_add(&ifp->if_data.ifi_ierrors, errors_in, relaxed);
}
TOUCHLASTCHANGE(&ifp->if_lastchange);
if (ifp->if_data_threshold != 0) {
ifnet_notify_data_threshold(ifp);
}
return 0;
}
errno_t
ifnet_stat_increment_out(struct ifnet *ifp, u_int32_t packets_out,
u_int32_t bytes_out, u_int32_t errors_out)
{
if (ifp == NULL) {
return EINVAL;
}
if (packets_out != 0) {
os_atomic_add(&ifp->if_data.ifi_opackets, packets_out, relaxed);
}
if (bytes_out != 0) {
os_atomic_add(&ifp->if_data.ifi_obytes, bytes_out, relaxed);
}
if (errors_out != 0) {
os_atomic_add(&ifp->if_data.ifi_oerrors, errors_out, relaxed);
}
TOUCHLASTCHANGE(&ifp->if_lastchange);
if (ifp->if_data_threshold != 0) {
ifnet_notify_data_threshold(ifp);
}
return 0;
}
errno_t
ifnet_set_stat(struct ifnet *ifp, const struct ifnet_stats_param *s)
{
if (ifp == NULL) {
return EINVAL;
}
os_atomic_store(&ifp->if_data.ifi_ipackets, s->packets_in, release);
os_atomic_store(&ifp->if_data.ifi_ibytes, s->bytes_in, release);
os_atomic_store(&ifp->if_data.ifi_imcasts, s->multicasts_in, release);
os_atomic_store(&ifp->if_data.ifi_ierrors, s->errors_in, release);
os_atomic_store(&ifp->if_data.ifi_opackets, s->packets_out, release);
os_atomic_store(&ifp->if_data.ifi_obytes, s->bytes_out, release);
os_atomic_store(&ifp->if_data.ifi_omcasts, s->multicasts_out, release);
os_atomic_store(&ifp->if_data.ifi_oerrors, s->errors_out, release);
os_atomic_store(&ifp->if_data.ifi_collisions, s->collisions, release);
os_atomic_store(&ifp->if_data.ifi_iqdrops, s->dropped, release);
os_atomic_store(&ifp->if_data.ifi_noproto, s->no_protocol, release);
/* Touch the last change time. */
TOUCHLASTCHANGE(&ifp->if_lastchange);
if (ifp->if_data_threshold != 0) {
ifnet_notify_data_threshold(ifp);
}
return 0;
}
errno_t
ifnet_stat(struct ifnet *ifp, struct ifnet_stats_param *s)
{
if (ifp == NULL) {
return EINVAL;
}
s->packets_in = os_atomic_load(&ifp->if_data.ifi_ipackets, relaxed);
s->bytes_in = os_atomic_load(&ifp->if_data.ifi_ibytes, relaxed);
s->multicasts_in = os_atomic_load(&ifp->if_data.ifi_imcasts, relaxed);
s->errors_in = os_atomic_load(&ifp->if_data.ifi_ierrors, relaxed);
s->packets_out = os_atomic_load(&ifp->if_data.ifi_opackets, relaxed);
s->bytes_out = os_atomic_load(&ifp->if_data.ifi_obytes, relaxed);
s->multicasts_out = os_atomic_load(&ifp->if_data.ifi_omcasts, relaxed);
s->errors_out = os_atomic_load(&ifp->if_data.ifi_oerrors, relaxed);
s->collisions = os_atomic_load(&ifp->if_data.ifi_collisions, relaxed);
s->dropped = os_atomic_load(&ifp->if_data.ifi_iqdrops, relaxed);
s->no_protocol = os_atomic_load(&ifp->if_data.ifi_noproto, relaxed);
if (ifp->if_data_threshold != 0) {
ifnet_notify_data_threshold(ifp);
}
return 0;
}
errno_t
ifnet_touch_lastchange(ifnet_t interface)
{
if (interface == NULL) {
return EINVAL;
}
TOUCHLASTCHANGE(&interface->if_lastchange);
return 0;
}
errno_t
ifnet_lastchange(ifnet_t interface, struct timeval *last_change)
{
if (interface == NULL) {
return EINVAL;
}
*last_change = interface->if_data.ifi_lastchange;
/* Crude conversion from uptime to calendar time */
last_change->tv_sec += boottime_sec();
return 0;
}
errno_t
ifnet_touch_lastupdown(ifnet_t interface)
{
if (interface == NULL) {
return EINVAL;
}
TOUCHLASTCHANGE(&interface->if_lastupdown);
return 0;
}
errno_t
ifnet_updown_delta(ifnet_t interface, struct timeval *updown_delta)
{
if (interface == NULL) {
return EINVAL;
}
/* Calculate the delta */
updown_delta->tv_sec = (time_t)net_uptime();
if (updown_delta->tv_sec > interface->if_data.ifi_lastupdown.tv_sec) {
updown_delta->tv_sec -= interface->if_data.ifi_lastupdown.tv_sec;
} else {
updown_delta->tv_sec = 0;
}
updown_delta->tv_usec = 0;
return 0;
}
errno_t
ifnet_get_address_list(ifnet_t interface, ifaddr_t **addresses)
{
return addresses == NULL ? EINVAL :
ifnet_get_address_list_family(interface, addresses, 0);
}
struct ifnet_addr_list {
SLIST_ENTRY(ifnet_addr_list) ifal_le;
struct ifaddr *ifal_ifa;
};
errno_t
ifnet_get_address_list_family(ifnet_t interface, ifaddr_t **addresses,
sa_family_t family)
{
return ifnet_get_address_list_family_internal(interface, addresses,
family, 0, Z_WAITOK, 0);
}
errno_t
ifnet_get_inuse_address_list(ifnet_t interface, ifaddr_t **addresses)
{
return addresses == NULL ? EINVAL :
ifnet_get_address_list_family_internal(interface, addresses,
0, 0, Z_WAITOK, 1);
}
extern uint32_t tcp_find_anypcb_byaddr(struct ifaddr *ifa);
extern uint32_t udp_find_anypcb_byaddr(struct ifaddr *ifa);
__private_extern__ errno_t
ifnet_get_address_list_family_internal(ifnet_t interface, ifaddr_t **addresses,
sa_family_t family, int detached, int how, int return_inuse_addrs)
{
SLIST_HEAD(, ifnet_addr_list) ifal_head;
struct ifnet_addr_list *ifal, *ifal_tmp;
struct ifnet *ifp;
int count = 0;
errno_t err = 0;
int usecount = 0;
int index = 0;
SLIST_INIT(&ifal_head);
if (addresses == NULL) {
err = EINVAL;
goto done;
}
*addresses = NULL;
if (detached) {
/*
* Interface has been detached, so skip the lookup
* at ifnet_head and go directly to inner loop.
*/
ifp = interface;
if (ifp == NULL) {
err = EINVAL;
goto done;
}
goto one;
}
ifnet_head_lock_shared();
TAILQ_FOREACH(ifp, &ifnet_head, if_link) {
if (interface != NULL && ifp != interface) {
continue;
}
one:
ifnet_lock_shared(ifp);
if (interface == NULL || interface == ifp) {
struct ifaddr *ifa;
TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
IFA_LOCK(ifa);
if (family != 0 &&
ifa->ifa_addr->sa_family != family) {
IFA_UNLOCK(ifa);
continue;
}
ifal = kalloc_type(struct ifnet_addr_list, how);
if (ifal == NULL) {
IFA_UNLOCK(ifa);
ifnet_lock_done(ifp);
if (!detached) {
ifnet_head_done();
}
err = ENOMEM;
goto done;
}
ifal->ifal_ifa = ifa;
ifa_addref(ifa);
SLIST_INSERT_HEAD(&ifal_head, ifal, ifal_le);
++count;
IFA_UNLOCK(ifa);
}
}
ifnet_lock_done(ifp);
if (detached) {
break;
}
}
if (!detached) {
ifnet_head_done();
}
if (count == 0) {
err = ENXIO;
goto done;
}
*addresses = kalloc_type(ifaddr_t, count + 1, how | Z_ZERO);
if (*addresses == NULL) {
err = ENOMEM;
goto done;
}
done:
SLIST_FOREACH_SAFE(ifal, &ifal_head, ifal_le, ifal_tmp) {
SLIST_REMOVE(&ifal_head, ifal, ifnet_addr_list, ifal_le);
if (err == 0) {
if (return_inuse_addrs) {
usecount = tcp_find_anypcb_byaddr(ifal->ifal_ifa);
usecount += udp_find_anypcb_byaddr(ifal->ifal_ifa);
if (usecount) {
(*addresses)[index] = ifal->ifal_ifa;
index++;
} else {
ifa_remref(ifal->ifal_ifa);
}
} else {
(*addresses)[--count] = ifal->ifal_ifa;
}
} else {
ifa_remref(ifal->ifal_ifa);
}
kfree_type(struct ifnet_addr_list, ifal);
}
VERIFY(err == 0 || *addresses == NULL);
if ((err == 0) && (count) && ((*addresses)[0] == NULL)) {
VERIFY(return_inuse_addrs == 1);
kfree_type(ifaddr_t, count + 1, *addresses);
err = ENXIO;
}
return err;
}
void
ifnet_free_address_list(ifaddr_t *addresses)
{
int i;
if (addresses == NULL) {
return;
}
for (i = 0; addresses[i] != NULL; i++) {
ifa_remref(addresses[i]);
}
kfree_type(ifaddr_t, i + 1, addresses);
}
void *
ifnet_lladdr(ifnet_t interface)
{
struct ifaddr *ifa;
void *lladdr;
if (interface == NULL) {
return NULL;
}
/*
* if_lladdr points to the permanent link address of
* the interface and it never gets deallocated; internal
* code should simply use IF_LLADDR() for performance.
*/
ifa = interface->if_lladdr;
IFA_LOCK_SPIN(ifa);
lladdr = LLADDR(SDL((void *)ifa->ifa_addr));
IFA_UNLOCK(ifa);
return lladdr;
}
errno_t
ifnet_llbroadcast_copy_bytes(ifnet_t interface, void *addr, size_t buffer_len,
size_t *out_len)
{
if (interface == NULL || addr == NULL || out_len == NULL) {
return EINVAL;
}
*out_len = interface->if_broadcast.length;
if (buffer_len < interface->if_broadcast.length) {
return EMSGSIZE;
}
if (interface->if_broadcast.length == 0) {
return ENXIO;
}
if (interface->if_broadcast.length <=
sizeof(interface->if_broadcast.u.buffer)) {
bcopy(interface->if_broadcast.u.buffer, addr,
interface->if_broadcast.length);
} else {
bcopy(interface->if_broadcast.u.ptr, addr,
interface->if_broadcast.length);
}
return 0;
}
static errno_t
ifnet_lladdr_copy_bytes_internal(ifnet_t interface, void *lladdr,
size_t lladdr_len, kauth_cred_t *credp)
{
const u_int8_t *bytes;
size_t bytes_len;
struct ifaddr *ifa;
uint8_t sdlbuf[SOCK_MAXADDRLEN + 1];
errno_t error = 0;
/*
* Make sure to accomodate the largest possible
* size of SA(if_lladdr)->sa_len.
*/
_CASSERT(sizeof(sdlbuf) == (SOCK_MAXADDRLEN + 1));
if (interface == NULL || lladdr == NULL) {
return EINVAL;
}
ifa = interface->if_lladdr;
IFA_LOCK_SPIN(ifa);
bcopy(ifa->ifa_addr, &sdlbuf, SDL(ifa->ifa_addr)->sdl_len);
IFA_UNLOCK(ifa);
bytes = dlil_ifaddr_bytes(SDL(&sdlbuf), &bytes_len, credp);
if (bytes_len != lladdr_len) {
bzero(lladdr, lladdr_len);
error = EMSGSIZE;
} else {
bcopy(bytes, lladdr, bytes_len);
}
return error;
}
errno_t
ifnet_lladdr_copy_bytes(ifnet_t interface, void *lladdr, size_t length)
{
return ifnet_lladdr_copy_bytes_internal(interface, lladdr, length,
NULL);
}
errno_t
ifnet_guarded_lladdr_copy_bytes(ifnet_t interface, void *lladdr, size_t length)
{
#if CONFIG_MACF
kauth_cred_t cred;
net_thread_marks_t marks;
#endif
kauth_cred_t *credp;
errno_t error;
#if CONFIG_MACF
marks = net_thread_marks_push(NET_THREAD_CKREQ_LLADDR);
cred = current_cached_proc_cred(PROC_NULL);
credp = &cred;
#else
credp = NULL;
#endif
error = ifnet_lladdr_copy_bytes_internal(interface, lladdr, length,
credp);
#if CONFIG_MACF
net_thread_marks_pop(marks);
#endif
return error;
}
static errno_t
ifnet_set_lladdr_internal(ifnet_t interface, const void *lladdr,
size_t lladdr_len, u_char new_type, int apply_type)
{
struct ifaddr *ifa;
errno_t error = 0;
if (interface == NULL) {
return EINVAL;
}
ifnet_head_lock_shared();
ifnet_lock_exclusive(interface);
if (lladdr_len != 0 &&
(lladdr_len != interface->if_addrlen || lladdr == 0)) {
ifnet_lock_done(interface);
ifnet_head_done();
return EINVAL;
}
ifa = ifnet_addrs[interface->if_index - 1];
if (ifa != NULL) {
struct sockaddr_dl *sdl;
IFA_LOCK_SPIN(ifa);
sdl = (struct sockaddr_dl *)(void *)ifa->ifa_addr;
if (lladdr_len != 0) {
bcopy(lladdr, LLADDR(sdl), lladdr_len);
} else {
bzero(LLADDR(sdl), interface->if_addrlen);
}
/* lladdr_len-check with if_addrlen makes sure it fits in u_char */
sdl->sdl_alen = (u_char)lladdr_len;
if (apply_type) {
sdl->sdl_type = new_type;
}
IFA_UNLOCK(ifa);
} else {
error = ENXIO;
}
ifnet_lock_done(interface);
ifnet_head_done();
/* Generate a kernel event */
if (error == 0) {
intf_event_enqueue_nwk_wq_entry(interface, NULL,
INTF_EVENT_CODE_LLADDR_UPDATE);
dlil_post_msg(interface, KEV_DL_SUBCLASS,
KEV_DL_LINK_ADDRESS_CHANGED, NULL, 0, FALSE);
}
return error;
}
errno_t
ifnet_set_lladdr(ifnet_t interface, const void* lladdr, size_t lladdr_len)
{
return ifnet_set_lladdr_internal(interface, lladdr, lladdr_len, 0, 0);
}
errno_t
ifnet_set_lladdr_and_type(ifnet_t interface, const void* lladdr,
size_t lladdr_len, u_char type)
{
return ifnet_set_lladdr_internal(interface, lladdr,
lladdr_len, type, 1);
}
errno_t
ifnet_add_multicast(ifnet_t interface, const struct sockaddr *maddr,
ifmultiaddr_t *ifmap)
{
if (interface == NULL || maddr == NULL) {
return EINVAL;
}
/* Don't let users screw up protocols' entries. */
switch (maddr->sa_family) {
case AF_LINK: {
const struct sockaddr_dl *sdl =
(const struct sockaddr_dl *)(uintptr_t)maddr;
if (sdl->sdl_len < sizeof(struct sockaddr_dl) ||
(sdl->sdl_nlen + sdl->sdl_alen + sdl->sdl_slen +
offsetof(struct sockaddr_dl, sdl_data) > sdl->sdl_len)) {
return EINVAL;
}
break;
}
case AF_UNSPEC:
if (maddr->sa_len < ETHER_ADDR_LEN +
offsetof(struct sockaddr, sa_data)) {
return EINVAL;
}
break;
default:
return EINVAL;
}
return if_addmulti_anon(interface, maddr, ifmap);
}
errno_t
ifnet_remove_multicast(ifmultiaddr_t ifma)
{
struct sockaddr *maddr;
if (ifma == NULL) {
return EINVAL;
}
maddr = ifma->ifma_addr;
/* Don't let users screw up protocols' entries. */
if (maddr->sa_family != AF_UNSPEC && maddr->sa_family != AF_LINK) {
return EINVAL;
}
return if_delmulti_anon(ifma->ifma_ifp, maddr);
}
errno_t
ifnet_get_multicast_list(ifnet_t ifp, ifmultiaddr_t **addresses)
{
int count = 0;
int cmax = 0;
struct ifmultiaddr *addr;
if (ifp == NULL || addresses == NULL) {
return EINVAL;
}
ifnet_lock_shared(ifp);
LIST_FOREACH(addr, &ifp->if_multiaddrs, ifma_link) {
cmax++;
}
*addresses = kalloc_type(ifmultiaddr_t, cmax + 1, Z_WAITOK);
if (*addresses == NULL) {
ifnet_lock_done(ifp);
return ENOMEM;
}
LIST_FOREACH(addr, &ifp->if_multiaddrs, ifma_link) {
if (count + 1 > cmax) {
break;
}
(*addresses)[count] = (ifmultiaddr_t)addr;
ifmaddr_reference((*addresses)[count]);
count++;
}
(*addresses)[cmax] = NULL;
ifnet_lock_done(ifp);
return 0;
}
void
ifnet_free_multicast_list(ifmultiaddr_t *addresses)
{
int i;
if (addresses == NULL) {
return;
}
for (i = 0; addresses[i] != NULL; i++) {
ifmaddr_release(addresses[i]);
}
kfree_type(ifmultiaddr_t, i + 1, addresses);
}
errno_t
ifnet_find_by_name(const char *ifname, ifnet_t *ifpp)
{
struct ifnet *ifp;
size_t namelen;
if (ifname == NULL) {
return EINVAL;
}
namelen = strlen(ifname);
*ifpp = NULL;
ifnet_head_lock_shared();
TAILQ_FOREACH(ifp, &ifnet_head, if_link) {
struct ifaddr *ifa;
struct sockaddr_dl *ll_addr;
ifa = ifnet_addrs[ifp->if_index - 1];
if (ifa == NULL) {
continue;
}
IFA_LOCK(ifa);
ll_addr = (struct sockaddr_dl *)(void *)ifa->ifa_addr;
if (namelen == ll_addr->sdl_nlen && strncmp(ll_addr->sdl_data,
ifname, ll_addr->sdl_nlen) == 0) {
IFA_UNLOCK(ifa);
*ifpp = ifp;
ifnet_reference(*ifpp);
break;
}
IFA_UNLOCK(ifa);
}
ifnet_head_done();
return (ifp == NULL) ? ENXIO : 0;
}
errno_t
ifnet_list_get(ifnet_family_t family, ifnet_t **list, u_int32_t *count)
{
return ifnet_list_get_common(family, FALSE, list, count);
}
__private_extern__ errno_t
ifnet_list_get_all(ifnet_family_t family, ifnet_t **list, u_int32_t *count)
{
return ifnet_list_get_common(family, TRUE, list, count);
}
struct ifnet_list {
SLIST_ENTRY(ifnet_list) ifl_le;
struct ifnet *ifl_ifp;
};
static errno_t
ifnet_list_get_common(ifnet_family_t family, boolean_t get_all, ifnet_t **list,
u_int32_t *count)
{
#pragma unused(get_all)
SLIST_HEAD(, ifnet_list) ifl_head;
struct ifnet_list *ifl, *ifl_tmp;
struct ifnet *ifp;
int cnt = 0;
errno_t err = 0;
SLIST_INIT(&ifl_head);
if (list == NULL || count == NULL) {
err = EINVAL;
goto done;
}
*count = 0;
*list = NULL;
ifnet_head_lock_shared();
TAILQ_FOREACH(ifp, &ifnet_head, if_link) {
if (family == IFNET_FAMILY_ANY || ifp->if_family == family) {
ifl = kalloc_type(struct ifnet_list, Z_NOWAIT);
if (ifl == NULL) {
ifnet_head_done();
err = ENOMEM;
goto done;
}
ifl->ifl_ifp = ifp;
ifnet_reference(ifp);
SLIST_INSERT_HEAD(&ifl_head, ifl, ifl_le);
++cnt;
}
}
ifnet_head_done();
if (cnt == 0) {
err = ENXIO;
goto done;
}
*list = kalloc_type(ifnet_t, cnt + 1, Z_WAITOK | Z_ZERO);
if (*list == NULL) {
err = ENOMEM;
goto done;
}
*count = cnt;
done:
SLIST_FOREACH_SAFE(ifl, &ifl_head, ifl_le, ifl_tmp) {
SLIST_REMOVE(&ifl_head, ifl, ifnet_list, ifl_le);
if (err == 0) {
(*list)[--cnt] = ifl->ifl_ifp;
} else {
ifnet_release(ifl->ifl_ifp);
}
kfree_type(struct ifnet_list, ifl);
}
return err;
}
void
ifnet_list_free(ifnet_t *interfaces)
{
int i;
if (interfaces == NULL) {
return;
}
for (i = 0; interfaces[i]; i++) {
ifnet_release(interfaces[i]);
}
kfree_type(ifnet_t, i + 1, interfaces);
}
/*************************************************************************/
/* ifaddr_t accessors */
/*************************************************************************/
errno_t
ifaddr_reference(ifaddr_t ifa)
{
if (ifa == NULL) {
return EINVAL;
}
ifa_addref(ifa);
return 0;
}
errno_t
ifaddr_release(ifaddr_t ifa)
{
if (ifa == NULL) {
return EINVAL;
}
ifa_remref(ifa);
return 0;
}
sa_family_t
ifaddr_address_family(ifaddr_t ifa)
{
sa_family_t family = 0;
if (ifa != NULL) {
IFA_LOCK_SPIN(ifa);
if (ifa->ifa_addr != NULL) {
family = ifa->ifa_addr->sa_family;
}
IFA_UNLOCK(ifa);
}
return family;
}
errno_t
ifaddr_address(ifaddr_t ifa, struct sockaddr *out_addr, u_int32_t addr_size)
{
u_int32_t copylen;
if (ifa == NULL || out_addr == NULL) {
return EINVAL;
}
IFA_LOCK_SPIN(ifa);
if (ifa->ifa_addr == NULL) {
IFA_UNLOCK(ifa);
return ENOTSUP;
}
copylen = (addr_size >= ifa->ifa_addr->sa_len) ?
ifa->ifa_addr->sa_len : addr_size;
bcopy(ifa->ifa_addr, out_addr, copylen);
if (ifa->ifa_addr->sa_len > addr_size) {
IFA_UNLOCK(ifa);
return EMSGSIZE;
}
IFA_UNLOCK(ifa);
return 0;
}
errno_t
ifaddr_dstaddress(ifaddr_t ifa, struct sockaddr *out_addr, u_int32_t addr_size)
{
u_int32_t copylen;
if (ifa == NULL || out_addr == NULL) {
return EINVAL;
}
IFA_LOCK_SPIN(ifa);
if (ifa->ifa_dstaddr == NULL) {
IFA_UNLOCK(ifa);
return ENOTSUP;
}
copylen = (addr_size >= ifa->ifa_dstaddr->sa_len) ?
ifa->ifa_dstaddr->sa_len : addr_size;
bcopy(ifa->ifa_dstaddr, out_addr, copylen);
if (ifa->ifa_dstaddr->sa_len > addr_size) {
IFA_UNLOCK(ifa);
return EMSGSIZE;
}
IFA_UNLOCK(ifa);
return 0;
}
errno_t
ifaddr_netmask(ifaddr_t ifa, struct sockaddr *out_addr, u_int32_t addr_size)
{
u_int32_t copylen;
if (ifa == NULL || out_addr == NULL) {
return EINVAL;
}
IFA_LOCK_SPIN(ifa);
if (ifa->ifa_netmask == NULL) {
IFA_UNLOCK(ifa);
return ENOTSUP;
}
copylen = addr_size >= ifa->ifa_netmask->sa_len ?
ifa->ifa_netmask->sa_len : addr_size;
bcopy(ifa->ifa_netmask, out_addr, copylen);
if (ifa->ifa_netmask->sa_len > addr_size) {
IFA_UNLOCK(ifa);
return EMSGSIZE;
}
IFA_UNLOCK(ifa);
return 0;
}
ifnet_t
ifaddr_ifnet(ifaddr_t ifa)
{
struct ifnet *ifp;
if (ifa == NULL) {
return NULL;
}
/* ifa_ifp is set once at creation time; it is never changed */
ifp = ifa->ifa_ifp;
return ifp;
}
ifaddr_t
ifaddr_withaddr(const struct sockaddr *address)
{
if (address == NULL) {
return NULL;
}
return ifa_ifwithaddr(address);
}
ifaddr_t
ifaddr_withdstaddr(const struct sockaddr *address)
{
if (address == NULL) {
return NULL;
}
return ifa_ifwithdstaddr(address);
}
ifaddr_t
ifaddr_withnet(const struct sockaddr *net)
{
if (net == NULL) {
return NULL;
}
return ifa_ifwithnet(net);
}
ifaddr_t
ifaddr_withroute(int flags, const struct sockaddr *destination,
const struct sockaddr *gateway)
{
if (destination == NULL || gateway == NULL) {
return NULL;
}
return ifa_ifwithroute(flags, destination, gateway);
}
ifaddr_t
ifaddr_findbestforaddr(const struct sockaddr *addr, ifnet_t interface)
{
if (addr == NULL || interface == NULL) {
return NULL;
}
return ifaof_ifpforaddr_select(addr, interface);
}
errno_t
ifmaddr_reference(ifmultiaddr_t ifmaddr)
{
if (ifmaddr == NULL) {
return EINVAL;
}
IFMA_ADDREF(ifmaddr);
return 0;
}
errno_t
ifmaddr_release(ifmultiaddr_t ifmaddr)
{
if (ifmaddr == NULL) {
return EINVAL;
}
IFMA_REMREF(ifmaddr);
return 0;
}
errno_t
ifmaddr_address(ifmultiaddr_t ifma, struct sockaddr *out_addr,
u_int32_t addr_size)
{
u_int32_t copylen;
if (ifma == NULL || out_addr == NULL) {
return EINVAL;
}
IFMA_LOCK(ifma);
if (ifma->ifma_addr == NULL) {
IFMA_UNLOCK(ifma);
return ENOTSUP;
}
copylen = (addr_size >= ifma->ifma_addr->sa_len ?
ifma->ifma_addr->sa_len : addr_size);
bcopy(ifma->ifma_addr, out_addr, copylen);
if (ifma->ifma_addr->sa_len > addr_size) {
IFMA_UNLOCK(ifma);
return EMSGSIZE;
}
IFMA_UNLOCK(ifma);
return 0;
}
errno_t
ifmaddr_lladdress(ifmultiaddr_t ifma, struct sockaddr *out_addr,
u_int32_t addr_size)
{
struct ifmultiaddr *ifma_ll;
if (ifma == NULL || out_addr == NULL) {
return EINVAL;
}
if ((ifma_ll = ifma->ifma_ll) == NULL) {
return ENOTSUP;
}
return ifmaddr_address(ifma_ll, out_addr, addr_size);
}
ifnet_t
ifmaddr_ifnet(ifmultiaddr_t ifma)
{
return (ifma == NULL) ? NULL : ifma->ifma_ifp;
}
/**************************************************************************/
/* interface cloner */
/**************************************************************************/
errno_t
ifnet_clone_attach(struct ifnet_clone_params *cloner_params,
if_clone_t *ifcloner)
{
errno_t error = 0;
struct if_clone *ifc = NULL;
size_t namelen;
if (cloner_params == NULL || ifcloner == NULL ||
cloner_params->ifc_name == NULL ||
cloner_params->ifc_create == NULL ||
cloner_params->ifc_destroy == NULL ||
(namelen = strlen(cloner_params->ifc_name)) >= IFNAMSIZ) {
error = EINVAL;
goto fail;
}
if (if_clone_lookup(cloner_params->ifc_name, NULL) != NULL) {
printf("%s: already a cloner for %s\n", __func__,
cloner_params->ifc_name);
error = EEXIST;
goto fail;
}
ifc = kalloc_type(struct if_clone, Z_WAITOK | Z_ZERO | Z_NOFAIL);
strlcpy(ifc->ifc_name, cloner_params->ifc_name, IFNAMSIZ + 1);
ifc->ifc_namelen = (uint8_t)namelen;
ifc->ifc_maxunit = IF_MAXUNIT;
ifc->ifc_create = cloner_params->ifc_create;
ifc->ifc_destroy = cloner_params->ifc_destroy;
error = if_clone_attach(ifc);
if (error != 0) {
printf("%s: if_clone_attach failed %d\n", __func__, error);
goto fail;
}
*ifcloner = ifc;
return 0;
fail:
if (ifc != NULL) {
kfree_type(struct if_clone, ifc);
}
return error;
}
errno_t
ifnet_clone_detach(if_clone_t ifcloner)
{
errno_t error = 0;
struct if_clone *ifc = ifcloner;
if (ifc == NULL) {
return EINVAL;
}
if ((if_clone_lookup(ifc->ifc_name, NULL)) == NULL) {
printf("%s: no cloner for %s\n", __func__, ifc->ifc_name);
error = EINVAL;
goto fail;
}
if_clone_detach(ifc);
kfree_type(struct if_clone, ifc);
fail:
return error;
}
/**************************************************************************/
/* misc */
/**************************************************************************/
static errno_t
ifnet_get_local_ports_extended_inner(ifnet_t ifp, protocol_family_t protocol,
u_int32_t flags, u_int8_t *bitfield)
{
u_int32_t ifindex;
/* no point in continuing if no address is assigned */
if (ifp != NULL && TAILQ_EMPTY(&ifp->if_addrhead)) {
return 0;
}
if_ports_used_update_wakeuuid(ifp);
#if SKYWALK
if (netns_is_enabled()) {
netns_get_local_ports(ifp, protocol, flags, bitfield);
}
#endif /* SKYWALK */
ifindex = (ifp != NULL) ? ifp->if_index : 0;
if (!(flags & IFNET_GET_LOCAL_PORTS_TCPONLY)) {
udp_get_ports_used(ifp, protocol, flags,
bitfield);
}
if (!(flags & IFNET_GET_LOCAL_PORTS_UDPONLY)) {
tcp_get_ports_used(ifp, protocol, flags,
bitfield);
}
return 0;
}
errno_t
ifnet_get_local_ports_extended(ifnet_t ifp, protocol_family_t protocol,
u_int32_t flags, u_int8_t *bitfield)
{
ifnet_t parent_ifp = NULL;
if (bitfield == NULL) {
return EINVAL;
}
switch (protocol) {
case PF_UNSPEC:
case PF_INET:
case PF_INET6:
break;
default:
return EINVAL;
}
/* bit string is long enough to hold 16-bit port values */
bzero(bitfield, bitstr_size(IP_PORTRANGE_SIZE));
ifnet_get_local_ports_extended_inner(ifp, protocol, flags, bitfield);
/* get local ports for parent interface */
if (ifp != NULL && ifnet_get_delegate_parent(ifp, &parent_ifp) == 0) {
ifnet_get_local_ports_extended_inner(parent_ifp, protocol,
flags, bitfield);
ifnet_release_delegate_parent(ifp);
}
return 0;
}
errno_t
ifnet_get_local_ports(ifnet_t ifp, u_int8_t *bitfield)
{
u_int32_t flags = IFNET_GET_LOCAL_PORTS_WILDCARDOK;
return ifnet_get_local_ports_extended(ifp, PF_UNSPEC, flags,
bitfield);
}
errno_t
ifnet_notice_node_presence(ifnet_t ifp, struct sockaddr *sa, int32_t rssi,
int lqm, int npm, u_int8_t srvinfo[48])
{
if (ifp == NULL || sa == NULL || srvinfo == NULL) {
return EINVAL;
}
if (sa->sa_len > sizeof(struct sockaddr_storage)) {
return EINVAL;
}
if (sa->sa_family != AF_LINK && sa->sa_family != AF_INET6) {
return EINVAL;
}
return dlil_node_present(ifp, sa, rssi, lqm, npm, srvinfo);
}
errno_t
ifnet_notice_node_presence_v2(ifnet_t ifp, struct sockaddr *sa, struct sockaddr_dl *sdl,
int32_t rssi, int lqm, int npm, u_int8_t srvinfo[48])
{
/* Support older version if sdl is NULL */
if (sdl == NULL) {
return ifnet_notice_node_presence(ifp, sa, rssi, lqm, npm, srvinfo);
}
if (ifp == NULL || sa == NULL || srvinfo == NULL) {
return EINVAL;
}
if (sa->sa_len > sizeof(struct sockaddr_storage)) {
return EINVAL;
}
if (sa->sa_family != AF_INET6) {
return EINVAL;
}
if (sdl->sdl_family != AF_LINK) {
return EINVAL;
}
return dlil_node_present_v2(ifp, sa, sdl, rssi, lqm, npm, srvinfo);
}
errno_t
ifnet_notice_node_absence(ifnet_t ifp, struct sockaddr *sa)
{
if (ifp == NULL || sa == NULL) {
return EINVAL;
}
if (sa->sa_len > sizeof(struct sockaddr_storage)) {
return EINVAL;
}
if (sa->sa_family != AF_LINK && sa->sa_family != AF_INET6) {
return EINVAL;
}
dlil_node_absent(ifp, sa);
return 0;
}
errno_t
ifnet_notice_primary_elected(ifnet_t ifp)
{
if (ifp == NULL) {
return EINVAL;
}
dlil_post_msg(ifp, KEV_DL_SUBCLASS, KEV_DL_PRIMARY_ELECTED, NULL, 0, FALSE);
return 0;
}
errno_t
ifnet_tx_compl_status(ifnet_t ifp, mbuf_t m, tx_compl_val_t val)
{
#pragma unused(val)
m_do_tx_compl_callback(m, ifp);
return 0;
}
errno_t
ifnet_tx_compl(ifnet_t ifp, mbuf_t m)
{
m_do_tx_compl_callback(m, ifp);
return 0;
}
errno_t
ifnet_report_issues(ifnet_t ifp, u_int8_t modid[IFNET_MODIDLEN],
u_int8_t info[IFNET_MODARGLEN])
{
if (ifp == NULL || modid == NULL) {
return EINVAL;
}
dlil_report_issues(ifp, modid, info);
return 0;
}
errno_t
ifnet_set_delegate(ifnet_t ifp, ifnet_t delegated_ifp)
{
ifnet_t odifp = NULL;
if (ifp == NULL) {
return EINVAL;
} else if (!ifnet_is_attached(ifp, 1)) {
return ENXIO;
}
ifnet_lock_exclusive(ifp);
odifp = ifp->if_delegated.ifp;
if (odifp != NULL && odifp == delegated_ifp) {
/* delegate info is unchanged; nothing more to do */
ifnet_lock_done(ifp);
goto done;
}
// Test if this delegate interface would cause a loop
ifnet_t delegate_check_ifp = delegated_ifp;
while (delegate_check_ifp != NULL) {
if (delegate_check_ifp == ifp) {
printf("%s: delegating to %s would cause a loop\n",
ifp->if_xname, delegated_ifp->if_xname);
ifnet_lock_done(ifp);
goto done;
}
delegate_check_ifp = delegate_check_ifp->if_delegated.ifp;
}
bzero(&ifp->if_delegated, sizeof(ifp->if_delegated));
if (delegated_ifp != NULL && ifp != delegated_ifp) {
uint32_t set_eflags;
ifp->if_delegated.ifp = delegated_ifp;
ifnet_reference(delegated_ifp);
ifp->if_delegated.type = delegated_ifp->if_type;
ifp->if_delegated.family = delegated_ifp->if_family;
ifp->if_delegated.subfamily = delegated_ifp->if_subfamily;
ifp->if_delegated.expensive =
delegated_ifp->if_eflags & IFEF_EXPENSIVE ? 1 : 0;
ifp->if_delegated.constrained =
delegated_ifp->if_xflags & IFXF_CONSTRAINED ? 1 : 0;
/*
* Propogate flags related to ECN from delegated interface
*/
if_clear_eflags(ifp, IFEF_ECN_ENABLE | IFEF_ECN_DISABLE);
set_eflags = (delegated_ifp->if_eflags &
(IFEF_ECN_ENABLE | IFEF_ECN_DISABLE));
if_set_eflags(ifp, set_eflags);
printf("%s: is now delegating %s (type 0x%x, family %u, "
"sub-family %u)\n", ifp->if_xname, delegated_ifp->if_xname,
delegated_ifp->if_type, delegated_ifp->if_family,
delegated_ifp->if_subfamily);
}
ifnet_lock_done(ifp);
if (odifp != NULL) {
if (odifp != delegated_ifp) {
printf("%s: is no longer delegating %s\n",
ifp->if_xname, odifp->if_xname);
}
ifnet_release(odifp);
}
/* Generate a kernel event */
dlil_post_msg(ifp, KEV_DL_SUBCLASS, KEV_DL_IFDELEGATE_CHANGED, NULL, 0, FALSE);
done:
/* Release the io ref count */
ifnet_decr_iorefcnt(ifp);
return 0;
}
errno_t
ifnet_get_delegate(ifnet_t ifp, ifnet_t *pdelegated_ifp)
{
if (ifp == NULL || pdelegated_ifp == NULL) {
return EINVAL;
} else if (!ifnet_is_attached(ifp, 1)) {
return ENXIO;
}
ifnet_lock_shared(ifp);
if (ifp->if_delegated.ifp != NULL) {
ifnet_reference(ifp->if_delegated.ifp);
}
*pdelegated_ifp = ifp->if_delegated.ifp;
ifnet_lock_done(ifp);
/* Release the io ref count */
ifnet_decr_iorefcnt(ifp);
return 0;
}
errno_t
ifnet_get_keepalive_offload_frames(ifnet_t ifp,
struct ifnet_keepalive_offload_frame *frames_array,
u_int32_t frames_array_count, size_t frame_data_offset,
u_int32_t *used_frames_count)
{
u_int32_t i;
if (frames_array == NULL || used_frames_count == NULL ||
frame_data_offset >= IFNET_KEEPALIVE_OFFLOAD_FRAME_DATA_SIZE) {
return EINVAL;
}
/* frame_data_offset should be 32-bit aligned */
if (P2ROUNDUP(frame_data_offset, sizeof(u_int32_t)) !=
frame_data_offset) {
return EINVAL;
}
*used_frames_count = 0;
if (frames_array_count == 0) {
return 0;
}
/* Keep-alive offload not required for CLAT interface */
if (IS_INTF_CLAT46(ifp)) {
return 0;
}
for (i = 0; i < frames_array_count; i++) {
struct ifnet_keepalive_offload_frame *frame = frames_array + i;
bzero(frame, sizeof(struct ifnet_keepalive_offload_frame));
}
/* First collect IPsec related keep-alive frames */
*used_frames_count = key_fill_offload_frames_for_savs(ifp,
frames_array, frames_array_count, frame_data_offset);
/* If there is more room, collect other UDP keep-alive frames */
if (*used_frames_count < frames_array_count) {
udp_fill_keepalive_offload_frames(ifp, frames_array,
frames_array_count, frame_data_offset,
used_frames_count);
}
/* If there is more room, collect other TCP keep-alive frames */
if (*used_frames_count < frames_array_count) {
tcp_fill_keepalive_offload_frames(ifp, frames_array,
frames_array_count, frame_data_offset,
used_frames_count);
}
VERIFY(*used_frames_count <= frames_array_count);
return 0;
}
errno_t
ifnet_notify_tcp_keepalive_offload_timeout(ifnet_t ifp,
struct ifnet_keepalive_offload_frame *frame)
{
errno_t error = 0;
if (ifp == NULL || frame == NULL) {
return EINVAL;
}
if (frame->type != IFNET_KEEPALIVE_OFFLOAD_FRAME_TCP) {
return EINVAL;
}
if (frame->ether_type != IFNET_KEEPALIVE_OFFLOAD_FRAME_ETHERTYPE_IPV4 &&
frame->ether_type != IFNET_KEEPALIVE_OFFLOAD_FRAME_ETHERTYPE_IPV6) {
return EINVAL;
}
if (frame->local_port == 0 || frame->remote_port == 0) {
return EINVAL;
}
error = tcp_notify_kao_timeout(ifp, frame);
return error;
}
errno_t
ifnet_link_status_report(ifnet_t ifp, const void *buffer,
size_t buffer_len)
{
struct if_link_status *ifsr;
errno_t err = 0;
if (ifp == NULL || buffer == NULL || buffer_len == 0) {
return EINVAL;
}
ifnet_lock_shared(ifp);
/*
* Make sure that the interface is attached but there is no need
* to take a reference because this call is coming from the driver.
*/
if (!ifnet_is_attached(ifp, 0)) {
ifnet_lock_done(ifp);
return ENXIO;
}
lck_rw_lock_exclusive(&ifp->if_link_status_lock);
/*
* If this is the first status report then allocate memory
* to store it.
*/
if (ifp->if_link_status == NULL) {
ifp->if_link_status = kalloc_type(struct if_link_status, Z_ZERO);
if (ifp->if_link_status == NULL) {
err = ENOMEM;
goto done;
}
}
ifsr = __DECONST(struct if_link_status *, buffer);
if (ifp->if_type == IFT_CELLULAR) {
struct if_cellular_status_v1 *if_cell_sr, *new_cell_sr;
/*
* Currently we have a single version -- if it does
* not match, just return.
*/
if (ifsr->ifsr_version !=
IF_CELLULAR_STATUS_REPORT_CURRENT_VERSION) {
err = ENOTSUP;
goto done;
}
if (ifsr->ifsr_len != sizeof(*if_cell_sr)) {
err = EINVAL;
goto done;
}
if_cell_sr =
&ifp->if_link_status->ifsr_u.ifsr_cell.if_cell_u.if_status_v1;
new_cell_sr = &ifsr->ifsr_u.ifsr_cell.if_cell_u.if_status_v1;
/* Check if we need to act on any new notifications */
if ((new_cell_sr->valid_bitmask &
IF_CELL_UL_MSS_RECOMMENDED_VALID) &&
new_cell_sr->mss_recommended !=
if_cell_sr->mss_recommended) {
os_atomic_or(&tcbinfo.ipi_flags, INPCBINFO_UPDATE_MSS, relaxed);
inpcb_timer_sched(&tcbinfo, INPCB_TIMER_FAST);
#if NECP
necp_update_all_clients();
#endif
}
/* Finally copy the new information */
ifp->if_link_status->ifsr_version = ifsr->ifsr_version;
ifp->if_link_status->ifsr_len = ifsr->ifsr_len;
if_cell_sr->valid_bitmask = 0;
bcopy(new_cell_sr, if_cell_sr, sizeof(*if_cell_sr));
} else if (IFNET_IS_WIFI(ifp)) {
struct if_wifi_status_v1 *if_wifi_sr, *new_wifi_sr;
/* Check version */
if (ifsr->ifsr_version !=
IF_WIFI_STATUS_REPORT_CURRENT_VERSION) {
err = ENOTSUP;
goto done;
}
if (ifsr->ifsr_len != sizeof(*if_wifi_sr)) {
err = EINVAL;
goto done;
}
if_wifi_sr =
&ifp->if_link_status->ifsr_u.ifsr_wifi.if_wifi_u.if_status_v1;
new_wifi_sr =
&ifsr->ifsr_u.ifsr_wifi.if_wifi_u.if_status_v1;
ifp->if_link_status->ifsr_version = ifsr->ifsr_version;
ifp->if_link_status->ifsr_len = ifsr->ifsr_len;
if_wifi_sr->valid_bitmask = 0;
bcopy(new_wifi_sr, if_wifi_sr, sizeof(*if_wifi_sr));
/*
* Update the bandwidth values if we got recent values
* reported through the other KPI.
*/
if (!(new_wifi_sr->valid_bitmask &
IF_WIFI_UL_MAX_BANDWIDTH_VALID) &&
ifp->if_output_bw.max_bw > 0) {
if_wifi_sr->valid_bitmask |=
IF_WIFI_UL_MAX_BANDWIDTH_VALID;
if_wifi_sr->ul_max_bandwidth =
ifp->if_output_bw.max_bw > UINT32_MAX ?
UINT32_MAX :
(uint32_t)ifp->if_output_bw.max_bw;
}
if (!(new_wifi_sr->valid_bitmask &
IF_WIFI_UL_EFFECTIVE_BANDWIDTH_VALID) &&
ifp->if_output_bw.eff_bw > 0) {
if_wifi_sr->valid_bitmask |=
IF_WIFI_UL_EFFECTIVE_BANDWIDTH_VALID;
if_wifi_sr->ul_effective_bandwidth =
ifp->if_output_bw.eff_bw > UINT32_MAX ?
UINT32_MAX :
(uint32_t)ifp->if_output_bw.eff_bw;
}
if (!(new_wifi_sr->valid_bitmask &
IF_WIFI_DL_MAX_BANDWIDTH_VALID) &&
ifp->if_input_bw.max_bw > 0) {
if_wifi_sr->valid_bitmask |=
IF_WIFI_DL_MAX_BANDWIDTH_VALID;
if_wifi_sr->dl_max_bandwidth =
ifp->if_input_bw.max_bw > UINT32_MAX ?
UINT32_MAX :
(uint32_t)ifp->if_input_bw.max_bw;
}
if (!(new_wifi_sr->valid_bitmask &
IF_WIFI_DL_EFFECTIVE_BANDWIDTH_VALID) &&
ifp->if_input_bw.eff_bw > 0) {
if_wifi_sr->valid_bitmask |=
IF_WIFI_DL_EFFECTIVE_BANDWIDTH_VALID;
if_wifi_sr->dl_effective_bandwidth =
ifp->if_input_bw.eff_bw > UINT32_MAX ?
UINT32_MAX :
(uint32_t)ifp->if_input_bw.eff_bw;
}
}
done:
lck_rw_done(&ifp->if_link_status_lock);
ifnet_lock_done(ifp);
return err;
}
/*************************************************************************/
/* Fastlane QoS Ca */
/*************************************************************************/
errno_t
ifnet_set_fastlane_capable(ifnet_t interface, boolean_t capable)
{
if (interface == NULL) {
return EINVAL;
}
if_set_qosmarking_mode(interface,
capable ? IFRTYPE_QOSMARKING_FASTLANE : IFRTYPE_QOSMARKING_MODE_NONE);
return 0;
}
errno_t
ifnet_get_fastlane_capable(ifnet_t interface, boolean_t *capable)
{
if (interface == NULL || capable == NULL) {
return EINVAL;
}
if (interface->if_qosmarking_mode == IFRTYPE_QOSMARKING_FASTLANE) {
*capable = true;
} else {
*capable = false;
}
return 0;
}
errno_t
ifnet_get_unsent_bytes(ifnet_t interface, int64_t *unsent_bytes)
{
int64_t bytes;
if (interface == NULL || unsent_bytes == NULL) {
return EINVAL;
}
bytes = *unsent_bytes = 0;
if (!IF_FULLY_ATTACHED(interface)) {
return ENXIO;
}
bytes = interface->if_sndbyte_unsent;
if (interface->if_eflags & IFEF_TXSTART) {
bytes += IFCQ_BYTES(interface->if_snd);
}
*unsent_bytes = bytes;
return 0;
}
errno_t
ifnet_get_buffer_status(const ifnet_t ifp, ifnet_buffer_status_t *buf_status)
{
if (ifp == NULL || buf_status == NULL) {
return EINVAL;
}
bzero(buf_status, sizeof(*buf_status));
if (!IF_FULLY_ATTACHED(ifp)) {
return ENXIO;
}
if (ifp->if_eflags & IFEF_TXSTART) {
buf_status->buf_interface = IFCQ_BYTES(ifp->if_snd);
}
buf_status->buf_sndbuf = ((buf_status->buf_interface != 0) ||
(ifp->if_sndbyte_unsent != 0)) ? 1 : 0;
return 0;
}
void
ifnet_normalise_unsent_data(void)
{
struct ifnet *ifp;
ifnet_head_lock_shared();
TAILQ_FOREACH(ifp, &ifnet_head, if_link) {
ifnet_lock_exclusive(ifp);
if (!IF_FULLY_ATTACHED(ifp)) {
ifnet_lock_done(ifp);
continue;
}
if (!(ifp->if_eflags & IFEF_TXSTART)) {
ifnet_lock_done(ifp);
continue;
}
if (ifp->if_sndbyte_total > 0 ||
IFCQ_BYTES(ifp->if_snd) > 0) {
ifp->if_unsent_data_cnt++;
}
ifnet_lock_done(ifp);
}
ifnet_head_done();
}
errno_t
ifnet_set_low_power_mode(ifnet_t ifp, boolean_t on)
{
errno_t error;
error = if_set_low_power(ifp, on);
return error;
}
errno_t
ifnet_get_low_power_mode(ifnet_t ifp, boolean_t *on)
{
if (ifp == NULL || on == NULL) {
return EINVAL;
}
*on = ((ifp->if_xflags & IFXF_LOW_POWER) != 0);
return 0;
}
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