/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 1999-2016 Apple Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
- *
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
- *
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * @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 OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
+ * 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) 1999 Apple Computer, Inc.
- *
- * Data Link Inteface Layer
- * Author: Ted Walker
+ * NOTICE: This file was modified by SPARTA, Inc. in 2005 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 <stddef.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
+#include <sys/domain.h>
+#include <sys/user.h>
+#include <sys/random.h>
+#include <sys/socketvar.h>
#include <net/if_dl.h>
#include <net/if.h>
+#include <net/route.h>
#include <net/if_var.h>
#include <net/dlil.h>
+#include <net/if_arp.h>
+#include <net/iptap.h>
+#include <net/pktap.h>
#include <sys/kern_event.h>
#include <sys/kdebug.h>
-#include <string.h>
+#include <sys/mcache.h>
+#include <sys/syslog.h>
+#include <sys/protosw.h>
+#include <sys/priv.h>
-#include <kern/thread.h>
+#include <kern/assert.h>
#include <kern/task.h>
-#include <net/netisr.h>
-#include <net/if_types.h>
+#include <kern/thread.h>
+#include <kern/sched_prim.h>
+#include <kern/locks.h>
+#include <kern/zalloc.h>
+#include <net/kpi_protocol.h>
+#include <net/if_types.h>
+#include <net/if_llreach.h>
+#include <net/kpi_interfacefilter.h>
+#include <net/classq/classq.h>
+#include <net/classq/classq_sfb.h>
+#include <net/flowhash.h>
+#include <net/ntstat.h>
+
+#if INET
+#include <netinet/in_var.h>
+#include <netinet/igmp_var.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 <netinet/if_ether.h>
+#include <netinet/in_pcb.h>
+#include <netinet/in_tclass.h>
+#endif /* INET */
+
+#if INET6
+#include <netinet6/in6_var.h>
+#include <netinet6/nd6.h>
+#include <netinet6/mld6_var.h>
+#include <netinet6/scope6_var.h>
+#endif /* INET6 */
+
+#include <libkern/OSAtomic.h>
+#include <libkern/tree.h>
+
+#include <dev/random/randomdev.h>
#include <machine/machine_routines.h>
-#define DBG_LAYER_BEG DLILDBG_CODE(DBG_DLIL_STATIC, 0)
-#define DBG_LAYER_END DLILDBG_CODE(DBG_DLIL_STATIC, 2)
-#define DBG_FNC_DLIL_INPUT DLILDBG_CODE(DBG_DLIL_STATIC, (1 << 8))
-#define DBG_FNC_DLIL_OUTPUT DLILDBG_CODE(DBG_DLIL_STATIC, (2 << 8))
-#define DBG_FNC_DLIL_IFOUT DLILDBG_CODE(DBG_DLIL_STATIC, (3 << 8))
+#include <mach/thread_act.h>
+#include <mach/sdt.h>
+
+#if CONFIG_MACF
+#include <sys/kauth.h>
+#include <security/mac_framework.h>
+#include <net/ethernet.h>
+#include <net/firewire.h>
+#endif
+#if PF
+#include <net/pfvar.h>
+#endif /* PF */
+#if PF_ALTQ
+#include <net/altq/altq.h>
+#endif /* PF_ALTQ */
+#include <net/pktsched/pktsched.h>
+
+#if NECP
+#include <net/necp.h>
+#endif /* NECP */
+
+#define DBG_LAYER_BEG DLILDBG_CODE(DBG_DLIL_STATIC, 0)
+#define DBG_LAYER_END DLILDBG_CODE(DBG_DLIL_STATIC, 2)
+#define DBG_FNC_DLIL_INPUT DLILDBG_CODE(DBG_DLIL_STATIC, (1 << 8))
+#define DBG_FNC_DLIL_OUTPUT DLILDBG_CODE(DBG_DLIL_STATIC, (2 << 8))
+#define DBG_FNC_DLIL_IFOUT DLILDBG_CODE(DBG_DLIL_STATIC, (3 << 8))
+
+#define MAX_FRAME_TYPE_SIZE 4 /* LONGWORDS */
+#define MAX_LINKADDR 4 /* LONGWORDS */
+#define M_NKE M_IFADDR
+
+#if 1
+#define DLIL_PRINTF printf
+#else
+#define DLIL_PRINTF kprintf
+#endif
-#define MAX_DL_TAGS 50
-#define MAX_DLIL_FILTERS 50
-#define MAX_FRAME_TYPE_SIZE 4 /* LONGWORDS */
-#define MAX_LINKADDR 4 /* LONGWORDS */
-#define M_NKE M_IFADDR
+#define IF_DATA_REQUIRE_ALIGNED_64(f) \
+ _CASSERT(!(offsetof(struct if_data_internal, f) % sizeof (u_int64_t)))
-#define PFILT(x) ((struct dlil_filterq_entry *) (x))->variants.pr_filter
-#define IFILT(x) ((struct dlil_filterq_entry *) (x))->variants.if_filter
+#define IFNET_IF_DATA_REQUIRE_ALIGNED_64(f) \
+ _CASSERT(!(offsetof(struct ifnet, if_data.f) % sizeof (u_int64_t)))
-struct dl_tag_str {
- struct ifnet *ifp;
- struct if_proto *proto;
- struct dlil_filterq_head *pr_flt_head;
+enum {
+ kProtoKPI_v1 = 1,
+ kProtoKPI_v2 = 2
};
-
-struct dlil_stats_str {
- int inject_pr_in1;
- int inject_pr_in2;
- int inject_pr_out1;
- int inject_pr_out2;
- int inject_if_in1;
- int inject_if_in2;
- int inject_if_out1;
- int inject_if_out2;
+/*
+ * List of if_proto structures in if_proto_hash[] is protected by
+ * the ifnet lock. The rest of the fields are initialized at protocol
+ * attach time and never change, thus no lock required as long as
+ * a reference to it is valid, via if_proto_ref().
+ */
+struct if_proto {
+ SLIST_ENTRY(if_proto) next_hash;
+ u_int32_t refcount;
+ u_int32_t detached;
+ struct ifnet *ifp;
+ protocol_family_t protocol_family;
+ int proto_kpi;
+ union {
+ struct {
+ proto_media_input input;
+ proto_media_preout pre_output;
+ proto_media_event event;
+ proto_media_ioctl ioctl;
+ proto_media_detached detached;
+ proto_media_resolve_multi resolve_multi;
+ proto_media_send_arp send_arp;
+ } v1;
+ struct {
+ proto_media_input_v2 input;
+ proto_media_preout pre_output;
+ proto_media_event event;
+ proto_media_ioctl ioctl;
+ proto_media_detached detached;
+ proto_media_resolve_multi resolve_multi;
+ proto_media_send_arp send_arp;
+ } v2;
+ } kpi;
};
+SLIST_HEAD(proto_hash_entry, if_proto);
-struct dlil_filter_id_str {
- int type;
- struct dlil_filterq_head *head;
- struct dlil_filterq_entry *filter_ptr;
- struct ifnet *ifp;
- struct if_proto *proto;
+#define DLIL_SDLMAXLEN 64
+#define DLIL_SDLDATALEN \
+ (DLIL_SDLMAXLEN - offsetof(struct sockaddr_dl, sdl_data[0]))
+
+struct dlil_ifnet {
+ struct ifnet dl_if; /* public ifnet */
+ /*
+ * DLIL private fields, protected by dl_if_lock
+ */
+ decl_lck_mtx_data(, dl_if_lock);
+ TAILQ_ENTRY(dlil_ifnet) dl_if_link; /* dlil_ifnet link */
+ u_int32_t dl_if_flags; /* flags (below) */
+ u_int32_t dl_if_refcnt; /* refcnt */
+ void (*dl_if_trace)(struct dlil_ifnet *, int); /* ref trace callback */
+ void *dl_if_uniqueid; /* unique interface id */
+ size_t dl_if_uniqueid_len; /* length of the unique id */
+ char dl_if_namestorage[IFNAMSIZ]; /* interface name storage */
+ char dl_if_xnamestorage[IFXNAMSIZ]; /* external name storage */
+ struct {
+ struct ifaddr ifa; /* lladdr ifa */
+ u_int8_t asdl[DLIL_SDLMAXLEN]; /* addr storage */
+ u_int8_t msdl[DLIL_SDLMAXLEN]; /* mask storage */
+ } dl_if_lladdr;
+ u_int8_t dl_if_descstorage[IF_DESCSIZE]; /* desc storage */
+ struct dlil_threading_info dl_if_inpstorage; /* input thread storage */
+ ctrace_t dl_if_attach; /* attach PC stacktrace */
+ ctrace_t dl_if_detach; /* detach PC stacktrace */
};
+/* Values for dl_if_flags (private to DLIL) */
+#define DLIF_INUSE 0x1 /* DLIL ifnet recycler, ifnet in use */
+#define DLIF_REUSE 0x2 /* DLIL ifnet recycles, ifnet is not new */
+#define DLIF_DEBUG 0x4 /* has debugging info */
+#define IF_REF_TRACE_HIST_SIZE 8 /* size of ref trace history */
-struct if_family_str {
- TAILQ_ENTRY(if_family_str) if_fam_next;
- u_long if_family;
- int refcnt;
- int flags;
+/* For gdb */
+__private_extern__ unsigned int if_ref_trace_hist_size = IF_REF_TRACE_HIST_SIZE;
-#define DLIL_SHUTDOWN 1
+struct dlil_ifnet_dbg {
+ struct dlil_ifnet dldbg_dlif; /* dlil_ifnet */
+ u_int16_t dldbg_if_refhold_cnt; /* # ifnet references */
+ u_int16_t dldbg_if_refrele_cnt; /* # ifnet releases */
+ /*
+ * Circular lists of ifnet_{reference,release} callers.
+ */
+ ctrace_t dldbg_if_refhold[IF_REF_TRACE_HIST_SIZE];
+ ctrace_t dldbg_if_refrele[IF_REF_TRACE_HIST_SIZE];
+};
- int (*add_if)(struct ifnet *ifp);
- int (*del_if)(struct ifnet *ifp);
- int (*add_proto)(struct ddesc_head_str *demux_desc_head,
- struct if_proto *proto, u_long dl_tag);
- int (*del_proto)(struct if_proto *proto, u_long dl_tag);
- int (*ifmod_ioctl)(struct ifnet *ifp, u_long command, caddr_t data);
- int (*shutdown)();
+#define DLIL_TO_IFP(s) (&s->dl_if)
+#define IFP_TO_DLIL(s) ((struct dlil_ifnet *)s)
+
+struct ifnet_filter {
+ TAILQ_ENTRY(ifnet_filter) filt_next;
+ u_int32_t filt_skip;
+ u_int32_t filt_flags;
+ ifnet_t filt_ifp;
+ const char *filt_name;
+ void *filt_cookie;
+ protocol_family_t filt_protocol;
+ iff_input_func filt_input;
+ iff_output_func filt_output;
+ iff_event_func filt_event;
+ iff_ioctl_func filt_ioctl;
+ iff_detached_func filt_detached;
};
+struct proto_input_entry;
+
+static TAILQ_HEAD(, dlil_ifnet) dlil_ifnet_head;
+static lck_grp_t *dlil_lock_group;
+lck_grp_t *ifnet_lock_group;
+static lck_grp_t *ifnet_head_lock_group;
+static lck_grp_t *ifnet_snd_lock_group;
+static lck_grp_t *ifnet_rcv_lock_group;
+lck_attr_t *ifnet_lock_attr;
+decl_lck_rw_data(static, ifnet_head_lock);
+decl_lck_mtx_data(static, dlil_ifnet_lock);
+u_int32_t dlil_filter_disable_tso_count = 0;
+
+#if DEBUG
+static unsigned int ifnet_debug = 1; /* debugging (enabled) */
+#else
+static unsigned int ifnet_debug; /* debugging (disabled) */
+#endif /* !DEBUG */
+static unsigned int dlif_size; /* size of dlil_ifnet to allocate */
+static unsigned int dlif_bufsize; /* size of dlif_size + headroom */
+static struct zone *dlif_zone; /* zone for dlil_ifnet */
+
+#define DLIF_ZONE_MAX 64 /* maximum elements in zone */
+#define DLIF_ZONE_NAME "ifnet" /* zone name */
+
+static unsigned int dlif_filt_size; /* size of ifnet_filter */
+static struct zone *dlif_filt_zone; /* zone for ifnet_filter */
+
+#define DLIF_FILT_ZONE_MAX 8 /* maximum elements in zone */
+#define DLIF_FILT_ZONE_NAME "ifnet_filter" /* zone name */
+
+static unsigned int dlif_phash_size; /* size of ifnet proto hash table */
+static struct zone *dlif_phash_zone; /* zone for ifnet proto hash table */
+
+#define DLIF_PHASH_ZONE_MAX DLIF_ZONE_MAX /* maximum elements in zone */
+#define DLIF_PHASH_ZONE_NAME "ifnet_proto_hash" /* zone name */
+
+static unsigned int dlif_proto_size; /* size of if_proto */
+static struct zone *dlif_proto_zone; /* zone for if_proto */
+
+#define DLIF_PROTO_ZONE_MAX (DLIF_ZONE_MAX*2) /* maximum elements in zone */
+#define DLIF_PROTO_ZONE_NAME "ifnet_proto" /* zone name */
+
+static unsigned int dlif_tcpstat_size; /* size of tcpstat_local to allocate */
+static unsigned int dlif_tcpstat_bufsize; /* size of dlif_tcpstat_size + headroom */
+static struct zone *dlif_tcpstat_zone; /* zone for tcpstat_local */
+
+#define DLIF_TCPSTAT_ZONE_MAX 1 /* maximum elements in zone */
+#define DLIF_TCPSTAT_ZONE_NAME "ifnet_tcpstat" /* zone name */
+
+static unsigned int dlif_udpstat_size; /* size of udpstat_local to allocate */
+static unsigned int dlif_udpstat_bufsize; /* size of dlif_udpstat_size + headroom */
+static struct zone *dlif_udpstat_zone; /* zone for udpstat_local */
+
+#define DLIF_UDPSTAT_ZONE_MAX 1 /* maximum elements in zone */
+#define DLIF_UDPSTAT_ZONE_NAME "ifnet_udpstat" /* zone name */
+
+static u_int32_t net_rtref;
+
+static struct dlil_main_threading_info dlil_main_input_thread_info;
+__private_extern__ struct dlil_threading_info *dlil_main_input_thread =
+ (struct dlil_threading_info *)&dlil_main_input_thread_info;
+
+static int dlil_event_internal(struct ifnet *ifp, struct kev_msg *msg, bool update_generation);
+static int dlil_detach_filter_internal(interface_filter_t filter, int detached);
+static void dlil_if_trace(struct dlil_ifnet *, int);
+static void if_proto_ref(struct if_proto *);
+static void if_proto_free(struct if_proto *);
+static struct if_proto *find_attached_proto(struct ifnet *, u_int32_t);
+static int dlil_ifp_proto_count(struct ifnet *);
+static void if_flt_monitor_busy(struct ifnet *);
+static void if_flt_monitor_unbusy(struct ifnet *);
+static void if_flt_monitor_enter(struct ifnet *);
+static void if_flt_monitor_leave(struct ifnet *);
+static int dlil_interface_filters_input(struct ifnet *, struct mbuf **,
+ char **, protocol_family_t);
+static int dlil_interface_filters_output(struct ifnet *, struct mbuf **,
+ protocol_family_t);
+static struct ifaddr *dlil_alloc_lladdr(struct ifnet *,
+ const struct sockaddr_dl *);
+static int ifnet_lookup(struct ifnet *);
+static void if_purgeaddrs(struct ifnet *);
+
+static errno_t ifproto_media_input_v1(struct ifnet *, protocol_family_t,
+ struct mbuf *, char *);
+static errno_t ifproto_media_input_v2(struct ifnet *, protocol_family_t,
+ struct mbuf *);
+static errno_t ifproto_media_preout(struct ifnet *, protocol_family_t,
+ mbuf_t *, const struct sockaddr *, void *, char *, char *);
+static void ifproto_media_event(struct ifnet *, protocol_family_t,
+ const struct kev_msg *);
+static errno_t ifproto_media_ioctl(struct ifnet *, protocol_family_t,
+ unsigned long, void *);
+static errno_t ifproto_media_resolve_multi(ifnet_t, const struct sockaddr *,
+ struct sockaddr_dl *, size_t);
+static errno_t ifproto_media_send_arp(struct ifnet *, u_short,
+ const struct sockaddr_dl *, const struct sockaddr *,
+ const struct sockaddr_dl *, const struct sockaddr *);
+
+static errno_t ifp_if_output(struct ifnet *, struct mbuf *);
+static void ifp_if_start(struct ifnet *);
+static errno_t ifp_if_input(struct ifnet *ifp, struct mbuf *m_head,
+ struct mbuf *m_tail, const struct ifnet_stat_increment_param *s,
+ boolean_t poll, struct thread *tp);
+static void ifp_if_input_poll(struct ifnet *, u_int32_t, u_int32_t,
+ struct mbuf **, struct mbuf **, u_int32_t *, u_int32_t *);
+static errno_t ifp_if_ctl(struct ifnet *, ifnet_ctl_cmd_t, u_int32_t, void *);
+static errno_t ifp_if_demux(struct ifnet *, struct mbuf *, char *,
+ protocol_family_t *);
+static errno_t ifp_if_add_proto(struct ifnet *, protocol_family_t,
+ const struct ifnet_demux_desc *, u_int32_t);
+static errno_t ifp_if_del_proto(struct ifnet *, protocol_family_t);
+static errno_t ifp_if_check_multi(struct ifnet *, const struct sockaddr *);
+static errno_t ifp_if_framer(struct ifnet *, struct mbuf **,
+ const struct sockaddr *, const char *, const char *);
+static errno_t ifp_if_framer_extended(struct ifnet *, struct mbuf **,
+ const struct sockaddr *, const char *, const char *,
+ u_int32_t *, u_int32_t *);
+static errno_t ifp_if_set_bpf_tap(struct ifnet *, bpf_tap_mode, bpf_packet_func);
+static void ifp_if_free(struct ifnet *);
+static void ifp_if_event(struct ifnet *, const struct kev_msg *);
+static __inline void ifp_inc_traffic_class_in(struct ifnet *, struct mbuf *);
+static __inline void ifp_inc_traffic_class_out(struct ifnet *, struct mbuf *);
+
+static void dlil_main_input_thread_func(void *, wait_result_t);
+static void dlil_input_thread_func(void *, wait_result_t);
+static void dlil_rxpoll_input_thread_func(void *, wait_result_t);
+static int dlil_create_input_thread(ifnet_t, struct dlil_threading_info *);
+static void dlil_terminate_input_thread(struct dlil_threading_info *);
+static void dlil_input_stats_add(const struct ifnet_stat_increment_param *,
+ struct dlil_threading_info *, boolean_t);
+static void dlil_input_stats_sync(struct ifnet *, struct dlil_threading_info *);
+static void dlil_input_packet_list_common(struct ifnet *, struct mbuf *,
+ u_int32_t, ifnet_model_t, boolean_t);
+static errno_t ifnet_input_common(struct ifnet *, struct mbuf *, struct mbuf *,
+ const struct ifnet_stat_increment_param *, boolean_t, boolean_t);
+
+#if DEBUG
+static void dlil_verify_sum16(void);
+#endif /* DEBUG */
+static void dlil_output_cksum_dbg(struct ifnet *, struct mbuf *, uint32_t,
+ protocol_family_t);
+static void dlil_input_cksum_dbg(struct ifnet *, struct mbuf *, char *,
+ protocol_family_t);
+
+static void ifnet_detacher_thread_func(void *, wait_result_t);
+static int ifnet_detacher_thread_cont(int);
+static void ifnet_detach_final(struct ifnet *);
+static void ifnet_detaching_enqueue(struct ifnet *);
+static struct ifnet *ifnet_detaching_dequeue(void);
+
+static void ifnet_start_thread_fn(void *, wait_result_t);
+static void ifnet_poll_thread_fn(void *, wait_result_t);
+static void ifnet_poll(struct ifnet *);
+
+static void ifp_src_route_copyout(struct ifnet *, struct route *);
+static void ifp_src_route_copyin(struct ifnet *, struct route *);
+#if INET6
+static void ifp_src_route6_copyout(struct ifnet *, struct route_in6 *);
+static void ifp_src_route6_copyin(struct ifnet *, struct route_in6 *);
+#endif /* INET6 */
+
+static int sysctl_rxpoll SYSCTL_HANDLER_ARGS;
+static int sysctl_rxpoll_mode_holdtime SYSCTL_HANDLER_ARGS;
+static int sysctl_rxpoll_sample_holdtime SYSCTL_HANDLER_ARGS;
+static int sysctl_rxpoll_interval_time SYSCTL_HANDLER_ARGS;
+static int sysctl_rxpoll_wlowat SYSCTL_HANDLER_ARGS;
+static int sysctl_rxpoll_whiwat SYSCTL_HANDLER_ARGS;
+static int sysctl_sndq_maxlen SYSCTL_HANDLER_ARGS;
+static int sysctl_rcvq_maxlen SYSCTL_HANDLER_ARGS;
+static int sysctl_hwcksum_dbg_mode SYSCTL_HANDLER_ARGS;
+static int sysctl_hwcksum_dbg_partial_rxoff_forced SYSCTL_HANDLER_ARGS;
+static int sysctl_hwcksum_dbg_partial_rxoff_adj SYSCTL_HANDLER_ARGS;
+static int sysctl_get_ports_used SYSCTL_HANDLER_ARGS;
+
+struct chain_len_stats tx_chain_len_stats;
+static int sysctl_tx_chain_len_stats SYSCTL_HANDLER_ARGS;
+
+/* The following are protected by dlil_ifnet_lock */
+static TAILQ_HEAD(, ifnet) ifnet_detaching_head;
+static u_int32_t ifnet_detaching_cnt;
+static void *ifnet_delayed_run; /* wait channel for detaching thread */
+
+decl_lck_mtx_data(static, ifnet_fc_lock);
+
+static uint32_t ifnet_flowhash_seed;
+
+struct ifnet_flowhash_key {
+ char ifk_name[IFNAMSIZ];
+ uint32_t ifk_unit;
+ uint32_t ifk_flags;
+ uint32_t ifk_eflags;
+ uint32_t ifk_capabilities;
+ uint32_t ifk_capenable;
+ uint32_t ifk_output_sched_model;
+ uint32_t ifk_rand1;
+ uint32_t ifk_rand2;
+};
+/* Flow control entry per interface */
+struct ifnet_fc_entry {
+ RB_ENTRY(ifnet_fc_entry) ifce_entry;
+ u_int32_t ifce_flowhash;
+ struct ifnet *ifce_ifp;
+};
-struct dlil_stats_str dlil_stats;
+static uint32_t ifnet_calc_flowhash(struct ifnet *);
+static int ifce_cmp(const struct ifnet_fc_entry *,
+ const struct ifnet_fc_entry *);
+static int ifnet_fc_add(struct ifnet *);
+static struct ifnet_fc_entry *ifnet_fc_get(u_int32_t);
+static void ifnet_fc_entry_free(struct ifnet_fc_entry *);
-static
-struct dlil_filter_id_str dlil_filters[MAX_DLIL_FILTERS+1];
+/* protected by ifnet_fc_lock */
+RB_HEAD(ifnet_fc_tree, ifnet_fc_entry) ifnet_fc_tree;
+RB_PROTOTYPE(ifnet_fc_tree, ifnet_fc_entry, ifce_entry, ifce_cmp);
+RB_GENERATE(ifnet_fc_tree, ifnet_fc_entry, ifce_entry, ifce_cmp);
-static
-struct dl_tag_str dl_tag_array[MAX_DL_TAGS+1];
+static unsigned int ifnet_fc_zone_size; /* sizeof ifnet_fc_entry */
+static struct zone *ifnet_fc_zone; /* ifnet_fc_entry zone */
-static
-TAILQ_HEAD(, if_family_str) if_family_head;
+#define IFNET_FC_ZONE_NAME "ifnet_fc_zone"
+#define IFNET_FC_ZONE_MAX 32
-static ifnet_inited = 0;
+extern void bpfdetach(struct ifnet *);
+extern void proto_input_run(void);
-int dlil_initialized = 0;
-decl_simple_lock_data(, dlil_input_lock)
-int dlil_input_thread_wakeup = 0;
-int dlil_expand_mcl;
-static struct mbuf *dlil_input_mbuf_head = NULL;
-static struct mbuf *dlil_input_mbuf_tail = NULL;
-static struct mbuf *dlil_input_loop_head = NULL;
-static struct mbuf *dlil_input_loop_tail = NULL;
+extern uint32_t udp_count_opportunistic(unsigned int ifindex,
+ u_int32_t flags);
+extern uint32_t tcp_count_opportunistic(unsigned int ifindex,
+ u_int32_t flags);
-static void dlil_input_thread(void);
-extern void run_netisr(void);
+__private_extern__ void link_rtrequest(int, struct rtentry *, struct sockaddr *);
+#if CONFIG_MACF
+int dlil_lladdr_ckreq = 0;
+#endif
-/*
- * Internal functions.
- */
+#if DEBUG
+int dlil_verbose = 1;
+#else
+int dlil_verbose = 0;
+#endif /* DEBUG */
+#if IFNET_INPUT_SANITY_CHK
+/* sanity checking of input packet lists received */
+static u_int32_t dlil_input_sanity_check = 0;
+#endif /* IFNET_INPUT_SANITY_CHK */
+/* rate limit debug messages */
+struct timespec dlil_dbgrate = { 1, 0 };
+
+SYSCTL_DECL(_net_link_generic_system);
+
+#if CONFIG_MACF
+SYSCTL_INT(_net_link_generic_system, OID_AUTO, dlil_lladdr_ckreq,
+ CTLFLAG_RW | CTLFLAG_LOCKED, &dlil_lladdr_ckreq, 0,
+ "Require MACF system info check to expose link-layer address");
+#endif
-static
-struct if_family_str *find_family_module(u_long if_family)
-{
- struct if_family_str *mod = NULL;
+SYSCTL_INT(_net_link_generic_system, OID_AUTO, dlil_verbose,
+ CTLFLAG_RW | CTLFLAG_LOCKED, &dlil_verbose, 0, "Log DLIL error messages");
+
+#define IF_SNDQ_MINLEN 32
+u_int32_t if_sndq_maxlen = IFQ_MAXLEN;
+SYSCTL_PROC(_net_link_generic_system, OID_AUTO, sndq_maxlen,
+ CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, &if_sndq_maxlen, IFQ_MAXLEN,
+ sysctl_sndq_maxlen, "I", "Default transmit queue max length");
+
+#define IF_RCVQ_MINLEN 32
+#define IF_RCVQ_MAXLEN 256
+u_int32_t if_rcvq_maxlen = IF_RCVQ_MAXLEN;
+SYSCTL_PROC(_net_link_generic_system, OID_AUTO, rcvq_maxlen,
+ CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, &if_rcvq_maxlen, IFQ_MAXLEN,
+ sysctl_rcvq_maxlen, "I", "Default receive queue max length");
+
+#define IF_RXPOLL_DECAY 2 /* ilog2 of EWMA decay rate (4) */
+static u_int32_t if_rxpoll_decay = IF_RXPOLL_DECAY;
+SYSCTL_UINT(_net_link_generic_system, OID_AUTO, rxpoll_decay,
+ CTLFLAG_RW | CTLFLAG_LOCKED, &if_rxpoll_decay, IF_RXPOLL_DECAY,
+ "ilog2 of EWMA decay rate of avg inbound packets");
+
+#define IF_RXPOLL_MODE_HOLDTIME_MIN (10ULL * 1000 * 1000) /* 10 ms */
+#define IF_RXPOLL_MODE_HOLDTIME (1000ULL * 1000 * 1000) /* 1 sec */
+static u_int64_t if_rxpoll_mode_holdtime = IF_RXPOLL_MODE_HOLDTIME;
+SYSCTL_PROC(_net_link_generic_system, OID_AUTO, rxpoll_freeze_time,
+ CTLTYPE_QUAD | CTLFLAG_RW | CTLFLAG_LOCKED, &if_rxpoll_mode_holdtime,
+ IF_RXPOLL_MODE_HOLDTIME, sysctl_rxpoll_mode_holdtime,
+ "Q", "input poll mode freeze time");
+
+#define IF_RXPOLL_SAMPLETIME_MIN (1ULL * 1000 * 1000) /* 1 ms */
+#define IF_RXPOLL_SAMPLETIME (10ULL * 1000 * 1000) /* 10 ms */
+static u_int64_t if_rxpoll_sample_holdtime = IF_RXPOLL_SAMPLETIME;
+SYSCTL_PROC(_net_link_generic_system, OID_AUTO, rxpoll_sample_time,
+ CTLTYPE_QUAD | CTLFLAG_RW | CTLFLAG_LOCKED, &if_rxpoll_sample_holdtime,
+ IF_RXPOLL_SAMPLETIME, sysctl_rxpoll_sample_holdtime,
+ "Q", "input poll sampling time");
+
+#define IF_RXPOLL_INTERVALTIME_MIN (1ULL * 1000) /* 1 us */
+#define IF_RXPOLL_INTERVALTIME (1ULL * 1000 * 1000) /* 1 ms */
+static u_int64_t if_rxpoll_interval_time = IF_RXPOLL_INTERVALTIME;
+SYSCTL_PROC(_net_link_generic_system, OID_AUTO, rxpoll_interval_time,
+ CTLTYPE_QUAD | CTLFLAG_RW | CTLFLAG_LOCKED, &if_rxpoll_interval_time,
+ IF_RXPOLL_INTERVALTIME, sysctl_rxpoll_interval_time,
+ "Q", "input poll interval (time)");
+
+#define IF_RXPOLL_INTERVAL_PKTS 0 /* 0 (disabled) */
+static u_int32_t if_rxpoll_interval_pkts = IF_RXPOLL_INTERVAL_PKTS;
+SYSCTL_UINT(_net_link_generic_system, OID_AUTO, rxpoll_interval_pkts,
+ CTLFLAG_RW | CTLFLAG_LOCKED, &if_rxpoll_interval_pkts,
+ IF_RXPOLL_INTERVAL_PKTS, "input poll interval (packets)");
+
+#define IF_RXPOLL_WLOWAT 10
+static u_int32_t if_rxpoll_wlowat = IF_RXPOLL_WLOWAT;
+SYSCTL_PROC(_net_link_generic_system, OID_AUTO, rxpoll_wakeups_lowat,
+ CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, &if_rxpoll_wlowat,
+ IF_RXPOLL_WLOWAT, sysctl_rxpoll_wlowat,
+ "I", "input poll wakeup low watermark");
+
+#define IF_RXPOLL_WHIWAT 100
+static u_int32_t if_rxpoll_whiwat = IF_RXPOLL_WHIWAT;
+SYSCTL_PROC(_net_link_generic_system, OID_AUTO, rxpoll_wakeups_hiwat,
+ CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, &if_rxpoll_whiwat,
+ IF_RXPOLL_WHIWAT, sysctl_rxpoll_whiwat,
+ "I", "input poll wakeup high watermark");
+
+static u_int32_t if_rxpoll_max = 0; /* 0 (automatic) */
+SYSCTL_UINT(_net_link_generic_system, OID_AUTO, rxpoll_max,
+ CTLFLAG_RW | CTLFLAG_LOCKED, &if_rxpoll_max, 0,
+ "max packets per poll call");
+
+static u_int32_t if_rxpoll = 1;
+SYSCTL_PROC(_net_link_generic_system, OID_AUTO, rxpoll,
+ CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, &if_rxpoll, 0,
+ sysctl_rxpoll, "I", "enable opportunistic input polling");
+
+u_int32_t if_bw_smoothing_val = 3;
+SYSCTL_UINT(_net_link_generic_system, OID_AUTO, if_bw_smoothing_val,
+ CTLFLAG_RW | CTLFLAG_LOCKED, &if_bw_smoothing_val, 0, "");
+
+u_int32_t if_bw_measure_size = 10;
+SYSCTL_INT(_net_link_generic_system, OID_AUTO, if_bw_measure_size,
+ CTLFLAG_RW | CTLFLAG_LOCKED, &if_bw_measure_size, 0, "");
+
+static u_int32_t cur_dlil_input_threads = 0;
+SYSCTL_UINT(_net_link_generic_system, OID_AUTO, dlil_input_threads,
+ CTLFLAG_RD | CTLFLAG_LOCKED, &cur_dlil_input_threads, 0,
+ "Current number of DLIL input threads");
+
+#if IFNET_INPUT_SANITY_CHK
+SYSCTL_UINT(_net_link_generic_system, OID_AUTO, dlil_input_sanity_check,
+ CTLFLAG_RW | CTLFLAG_LOCKED, &dlil_input_sanity_check, 0,
+ "Turn on sanity checking in DLIL input");
+#endif /* IFNET_INPUT_SANITY_CHK */
+
+static u_int32_t if_flowadv = 1;
+SYSCTL_UINT(_net_link_generic_system, OID_AUTO, flow_advisory,
+ CTLFLAG_RW | CTLFLAG_LOCKED, &if_flowadv, 1,
+ "enable flow-advisory mechanism");
+
+static u_int32_t if_delaybased_queue = 1;
+SYSCTL_UINT(_net_link_generic_system, OID_AUTO, delaybased_queue,
+ CTLFLAG_RW | CTLFLAG_LOCKED, &if_delaybased_queue, 1,
+ "enable delay based dynamic queue sizing");
+
+static uint64_t hwcksum_in_invalidated = 0;
+SYSCTL_QUAD(_net_link_generic_system, OID_AUTO,
+ hwcksum_in_invalidated, CTLFLAG_RD | CTLFLAG_LOCKED,
+ &hwcksum_in_invalidated, "inbound packets with invalidated hardware cksum");
+
+uint32_t hwcksum_dbg = 0;
+SYSCTL_UINT(_net_link_generic_system, OID_AUTO, hwcksum_dbg,
+ CTLFLAG_RW | CTLFLAG_LOCKED, &hwcksum_dbg, 0,
+ "enable hardware cksum debugging");
+
+u_int32_t ifnet_start_delayed = 0;
+SYSCTL_UINT(_net_link_generic_system, OID_AUTO, start_delayed,
+ CTLFLAG_RW | CTLFLAG_LOCKED, &ifnet_start_delayed, 0,
+ "number of times start was delayed");
+
+u_int32_t ifnet_delay_start_disabled = 0;
+SYSCTL_UINT(_net_link_generic_system, OID_AUTO, start_delay_disabled,
+ CTLFLAG_RW | CTLFLAG_LOCKED, &ifnet_delay_start_disabled, 0,
+ "number of times start was delayed");
+
+#define HWCKSUM_DBG_PARTIAL_FORCED 0x1 /* forced partial checksum */
+#define HWCKSUM_DBG_PARTIAL_RXOFF_ADJ 0x2 /* adjust start offset */
+#define HWCKSUM_DBG_FINALIZE_FORCED 0x10 /* forced finalize */
+#define HWCKSUM_DBG_MASK \
+ (HWCKSUM_DBG_PARTIAL_FORCED | HWCKSUM_DBG_PARTIAL_RXOFF_ADJ | \
+ HWCKSUM_DBG_FINALIZE_FORCED)
+
+static uint32_t hwcksum_dbg_mode = 0;
+SYSCTL_PROC(_net_link_generic_system, OID_AUTO, hwcksum_dbg_mode,
+ CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, &hwcksum_dbg_mode,
+ 0, sysctl_hwcksum_dbg_mode, "I", "hardware cksum debugging mode");
+
+static uint64_t hwcksum_dbg_partial_forced = 0;
+SYSCTL_QUAD(_net_link_generic_system, OID_AUTO,
+ hwcksum_dbg_partial_forced, CTLFLAG_RD | CTLFLAG_LOCKED,
+ &hwcksum_dbg_partial_forced, "packets forced using partial cksum");
+
+static uint64_t hwcksum_dbg_partial_forced_bytes = 0;
+SYSCTL_QUAD(_net_link_generic_system, OID_AUTO,
+ hwcksum_dbg_partial_forced_bytes, CTLFLAG_RD | CTLFLAG_LOCKED,
+ &hwcksum_dbg_partial_forced_bytes, "bytes forced using partial cksum");
+
+static uint32_t hwcksum_dbg_partial_rxoff_forced = 0;
+SYSCTL_PROC(_net_link_generic_system, OID_AUTO,
+ hwcksum_dbg_partial_rxoff_forced, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED,
+ &hwcksum_dbg_partial_rxoff_forced, 0,
+ sysctl_hwcksum_dbg_partial_rxoff_forced, "I",
+ "forced partial cksum rx offset");
+
+static uint32_t hwcksum_dbg_partial_rxoff_adj = 0;
+SYSCTL_PROC(_net_link_generic_system, OID_AUTO, hwcksum_dbg_partial_rxoff_adj,
+ CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, &hwcksum_dbg_partial_rxoff_adj,
+ 0, sysctl_hwcksum_dbg_partial_rxoff_adj, "I",
+ "adjusted partial cksum rx offset");
+
+static uint64_t hwcksum_dbg_verified = 0;
+SYSCTL_QUAD(_net_link_generic_system, OID_AUTO,
+ hwcksum_dbg_verified, CTLFLAG_RD | CTLFLAG_LOCKED,
+ &hwcksum_dbg_verified, "packets verified for having good checksum");
+
+static uint64_t hwcksum_dbg_bad_cksum = 0;
+SYSCTL_QUAD(_net_link_generic_system, OID_AUTO,
+ hwcksum_dbg_bad_cksum, CTLFLAG_RD | CTLFLAG_LOCKED,
+ &hwcksum_dbg_bad_cksum, "packets with bad hardware calculated checksum");
+
+static uint64_t hwcksum_dbg_bad_rxoff = 0;
+SYSCTL_QUAD(_net_link_generic_system, OID_AUTO,
+ hwcksum_dbg_bad_rxoff, CTLFLAG_RD | CTLFLAG_LOCKED,
+ &hwcksum_dbg_bad_rxoff, "packets with invalid rxoff");
+
+static uint64_t hwcksum_dbg_adjusted = 0;
+SYSCTL_QUAD(_net_link_generic_system, OID_AUTO,
+ hwcksum_dbg_adjusted, CTLFLAG_RD | CTLFLAG_LOCKED,
+ &hwcksum_dbg_adjusted, "packets with rxoff adjusted");
+
+static uint64_t hwcksum_dbg_finalized_hdr = 0;
+SYSCTL_QUAD(_net_link_generic_system, OID_AUTO,
+ hwcksum_dbg_finalized_hdr, CTLFLAG_RD | CTLFLAG_LOCKED,
+ &hwcksum_dbg_finalized_hdr, "finalized headers");
+
+static uint64_t hwcksum_dbg_finalized_data = 0;
+SYSCTL_QUAD(_net_link_generic_system, OID_AUTO,
+ hwcksum_dbg_finalized_data, CTLFLAG_RD | CTLFLAG_LOCKED,
+ &hwcksum_dbg_finalized_data, "finalized payloads");
+
+uint32_t hwcksum_tx = 1;
+SYSCTL_UINT(_net_link_generic_system, OID_AUTO, hwcksum_tx,
+ CTLFLAG_RW | CTLFLAG_LOCKED, &hwcksum_tx, 0,
+ "enable transmit hardware checksum offload");
+
+uint32_t hwcksum_rx = 1;
+SYSCTL_UINT(_net_link_generic_system, OID_AUTO, hwcksum_rx,
+ CTLFLAG_RW | CTLFLAG_LOCKED, &hwcksum_rx, 0,
+ "enable receive hardware checksum offload");
+
+SYSCTL_PROC(_net_link_generic_system, OID_AUTO, tx_chain_len_stats,
+ CTLFLAG_RD | CTLFLAG_LOCKED, 0, 9,
+ sysctl_tx_chain_len_stats, "S", "");
+
+uint32_t tx_chain_len_count = 0;
+SYSCTL_UINT(_net_link_generic_system, OID_AUTO, tx_chain_len_count,
+ CTLFLAG_RW | CTLFLAG_LOCKED, &tx_chain_len_count, 0, "");
+
+SYSCTL_NODE(_net_link_generic_system, OID_AUTO, get_ports_used,
+ CTLFLAG_RD | CTLFLAG_LOCKED, sysctl_get_ports_used, "");
+
+#if (DEVELOPMENT || DEBUG)
+static int sysctl_get_kao_frames SYSCTL_HANDLER_ARGS;
+SYSCTL_NODE(_net_link_generic_system, OID_AUTO, get_kao_frames,
+ CTLFLAG_RD | CTLFLAG_LOCKED, sysctl_get_kao_frames, "");
+#endif /* DEVELOPMENT || DEBUG */
+
+unsigned int net_rxpoll = 1;
+unsigned int net_affinity = 1;
+static kern_return_t dlil_affinity_set(struct thread *, u_int32_t);
+
+extern u_int32_t inject_buckets;
+
+static lck_grp_attr_t *dlil_grp_attributes = NULL;
+static lck_attr_t *dlil_lck_attributes = NULL;
+
+
+#define DLIL_INPUT_CHECK(m, ifp) { \
+ struct ifnet *_rcvif = mbuf_pkthdr_rcvif(m); \
+ if (_rcvif == NULL || (ifp != lo_ifp && _rcvif != ifp) || \
+ !(mbuf_flags(m) & MBUF_PKTHDR)) { \
+ panic_plain("%s: invalid mbuf %p\n", __func__, m); \
+ /* NOTREACHED */ \
+ } \
+}
- TAILQ_FOREACH(mod, &if_family_head, if_fam_next) {
- if (mod->if_family == (if_family & 0xffff))
- break;
- }
+#define DLIL_EWMA(old, new, decay) do { \
+ u_int32_t _avg; \
+ if ((_avg = (old)) > 0) \
+ _avg = (((_avg << (decay)) - _avg) + (new)) >> (decay); \
+ else \
+ _avg = (new); \
+ (old) = _avg; \
+} while (0)
+
+#define MBPS (1ULL * 1000 * 1000)
+#define GBPS (MBPS * 1000)
+
+struct rxpoll_time_tbl {
+ u_int64_t speed; /* downlink speed */
+ u_int32_t plowat; /* packets low watermark */
+ u_int32_t phiwat; /* packets high watermark */
+ u_int32_t blowat; /* bytes low watermark */
+ u_int32_t bhiwat; /* bytes high watermark */
+};
- return mod;
-}
+static struct rxpoll_time_tbl rxpoll_tbl[] = {
+ { 10 * MBPS, 2, 8, (1 * 1024), (6 * 1024) },
+ { 100 * MBPS, 10, 40, (4 * 1024), (64 * 1024) },
+ { 1 * GBPS, 10, 40, (4 * 1024), (64 * 1024) },
+ { 10 * GBPS, 10, 40, (4 * 1024), (64 * 1024) },
+ { 100 * GBPS, 10, 40, (4 * 1024), (64 * 1024) },
+ { 0, 0, 0, 0, 0 }
+};
+int
+proto_hash_value(u_int32_t protocol_family)
+{
+ /*
+ * dlil_proto_unplumb_all() depends on the mapping between
+ * the hash bucket index and the protocol family defined
+ * here; future changes must be applied there as well.
+ */
+ switch (protocol_family) {
+ case PF_INET:
+ return (0);
+ case PF_INET6:
+ return (1);
+ case PF_VLAN:
+ return (2);
+ case PF_UNSPEC:
+ default:
+ return (3);
+ }
+}
/*
- * Public functions.
+ * Caller must already be holding ifnet lock.
*/
-
-struct ifnet *ifbyfamily(u_long family, short unit)
+static struct if_proto *
+find_attached_proto(struct ifnet *ifp, u_int32_t protocol_family)
{
- struct ifnet *ifp;
+ struct if_proto *proto = NULL;
+ u_int32_t i = proto_hash_value(protocol_family);
- TAILQ_FOREACH(ifp, &ifnet, if_link)
- if ((family == ifp->if_family) &&
- (ifp->if_unit == unit))
- return ifp;
+ ifnet_lock_assert(ifp, IFNET_LCK_ASSERT_OWNED);
- return 0;
+ if (ifp->if_proto_hash != NULL)
+ proto = SLIST_FIRST(&ifp->if_proto_hash[i]);
+
+ while (proto != NULL && proto->protocol_family != protocol_family)
+ proto = SLIST_NEXT(proto, next_hash);
+
+ if (proto != NULL)
+ if_proto_ref(proto);
+
+ return (proto);
}
-struct if_proto *dlttoproto(dl_tag)
- u_long dl_tag;
+static void
+if_proto_ref(struct if_proto *proto)
{
- return dl_tag_array[dl_tag].proto;
+ atomic_add_32(&proto->refcount, 1);
}
+extern void if_rtproto_del(struct ifnet *ifp, int protocol);
-static int dlil_ifp_proto_count(struct ifnet * ifp)
+static void
+if_proto_free(struct if_proto *proto)
{
- int count = 0;
- struct if_proto * proto;
- struct dlil_proto_head * tmp;
+ u_int32_t oldval;
+ struct ifnet *ifp = proto->ifp;
+ u_int32_t proto_family = proto->protocol_family;
+ struct kev_dl_proto_data ev_pr_data;
- tmp = (struct dlil_proto_head *) &ifp->proto_head;
+ oldval = atomic_add_32_ov(&proto->refcount, -1);
+ if (oldval > 1)
+ return;
- TAILQ_FOREACH(proto, tmp, next)
- count++;
+ /* No more reference on this, protocol must have been detached */
+ VERIFY(proto->detached);
- return count;
-}
+ if (proto->proto_kpi == kProtoKPI_v1) {
+ if (proto->kpi.v1.detached)
+ proto->kpi.v1.detached(ifp, proto->protocol_family);
+ }
+ if (proto->proto_kpi == kProtoKPI_v2) {
+ if (proto->kpi.v2.detached)
+ proto->kpi.v2.detached(ifp, proto->protocol_family);
+ }
-u_long ifptodlt(struct ifnet *ifp, u_long proto_family)
-{
- struct if_proto *proto;
- struct dlil_proto_head *tmp = (struct dlil_proto_head *) &ifp->proto_head;
+ /*
+ * Cleanup routes that may still be in the routing table for that
+ * interface/protocol pair.
+ */
+ if_rtproto_del(ifp, proto_family);
+ /*
+ * The reserved field carries the number of protocol still attached
+ * (subject to change)
+ */
+ ifnet_lock_shared(ifp);
+ ev_pr_data.proto_family = proto_family;
+ ev_pr_data.proto_remaining_count = dlil_ifp_proto_count(ifp);
+ ifnet_lock_done(ifp);
- TAILQ_FOREACH(proto, tmp, next)
- if (proto->protocol_family == proto_family)
- return proto->dl_tag;
+ dlil_post_msg(ifp, KEV_DL_SUBCLASS, KEV_DL_PROTO_DETACHED,
+ (struct net_event_data *)&ev_pr_data,
+ sizeof (struct kev_dl_proto_data));
- return 0;
+ zfree(dlif_proto_zone, proto);
}
-
-int dlil_find_dltag(u_long if_family, short unit, u_long proto_family, u_long *dl_tag)
+__private_extern__ void
+ifnet_lock_assert(struct ifnet *ifp, ifnet_lock_assert_t what)
{
- struct ifnet *ifp;
+ unsigned int type = 0;
+ int ass = 1;
- ifp = ifbyfamily(if_family, unit);
- if (!ifp)
- return ENOENT;
+ switch (what) {
+ case IFNET_LCK_ASSERT_EXCLUSIVE:
+ type = LCK_RW_ASSERT_EXCLUSIVE;
+ break;
- *dl_tag = ifptodlt(ifp, proto_family);
- if (*dl_tag == 0)
- return EPROTONOSUPPORT;
- else
- return 0;
-}
+ case IFNET_LCK_ASSERT_SHARED:
+ type = LCK_RW_ASSERT_SHARED;
+ break;
+ case IFNET_LCK_ASSERT_OWNED:
+ type = LCK_RW_ASSERT_HELD;
+ break;
-int dlil_get_next_dl_tag(u_long current_tag, struct dl_tag_attr_str *next)
-{
- int i;
+ case IFNET_LCK_ASSERT_NOTOWNED:
+ /* nothing to do here for RW lock; bypass assert */
+ ass = 0;
+ break;
- for (i = (current_tag+1); i < MAX_DL_TAGS; i++)
- if (dl_tag_array[i].ifp) {
- next->dl_tag = i;
- next->if_flags = dl_tag_array[i].ifp->if_flags;
- next->if_unit = dl_tag_array[i].ifp->if_unit;
- next->protocol_family = dl_tag_array[i].proto->protocol_family;
- next->if_family = dl_tag_array[i].ifp->if_family;
- return 0;
+ default:
+ panic("bad ifnet assert type: %d", what);
+ /* NOTREACHED */
}
+ if (ass)
+ lck_rw_assert(&ifp->if_lock, type);
+}
+
+__private_extern__ void
+ifnet_lock_shared(struct ifnet *ifp)
+{
+ lck_rw_lock_shared(&ifp->if_lock);
+}
+
+__private_extern__ void
+ifnet_lock_exclusive(struct ifnet *ifp)
+{
+ lck_rw_lock_exclusive(&ifp->if_lock);
+}
- /*
- * If we got here, there are no more entries
- */
+__private_extern__ void
+ifnet_lock_done(struct ifnet *ifp)
+{
+ lck_rw_done(&ifp->if_lock);
+}
- return ENOENT;
-}
+#if INET
+__private_extern__ void
+if_inetdata_lock_shared(struct ifnet *ifp)
+{
+ lck_rw_lock_shared(&ifp->if_inetdata_lock);
+}
-void dlil_post_msg(struct ifnet *ifp, u_long event_subclass, u_long event_code,
- struct net_event_data *event_data, u_long event_data_len)
+__private_extern__ void
+if_inetdata_lock_exclusive(struct ifnet *ifp)
{
- struct net_event_data ev_data;
- struct kev_msg ev_msg;
+ lck_rw_lock_exclusive(&ifp->if_inetdata_lock);
+}
- /*
- * a net event always start with a net_event_data structure
- * but the caller can generate a simple net event or
- * provide a longer event structure to post
- */
-
- ev_msg.vendor_code = KEV_VENDOR_APPLE;
- ev_msg.kev_class = KEV_NETWORK_CLASS;
- ev_msg.kev_subclass = event_subclass;
- ev_msg.event_code = event_code;
-
- if (event_data == 0) {
- event_data = &ev_data;
- event_data_len = sizeof(struct net_event_data);
- }
-
- strncpy(&event_data->if_name[0], ifp->if_name, IFNAMSIZ);
- event_data->if_family = ifp->if_family;
- event_data->if_unit = (unsigned long) ifp->if_unit;
+__private_extern__ void
+if_inetdata_lock_done(struct ifnet *ifp)
+{
+ lck_rw_done(&ifp->if_inetdata_lock);
+}
+#endif
- ev_msg.dv[0].data_length = event_data_len;
- ev_msg.dv[0].data_ptr = event_data;
- ev_msg.dv[1].data_length = 0;
+#if INET6
+__private_extern__ void
+if_inet6data_lock_shared(struct ifnet *ifp)
+{
+ lck_rw_lock_shared(&ifp->if_inet6data_lock);
+}
- kev_post_msg(&ev_msg);
+__private_extern__ void
+if_inet6data_lock_exclusive(struct ifnet *ifp)
+{
+ lck_rw_lock_exclusive(&ifp->if_inet6data_lock);
}
+__private_extern__ void
+if_inet6data_lock_done(struct ifnet *ifp)
+{
+ lck_rw_done(&ifp->if_inet6data_lock);
+}
+#endif
+__private_extern__ void
+ifnet_head_lock_shared(void)
+{
+ lck_rw_lock_shared(&ifnet_head_lock);
+}
-void
-dlil_init()
+__private_extern__ void
+ifnet_head_lock_exclusive(void)
{
- int i;
+ lck_rw_lock_exclusive(&ifnet_head_lock);
+}
- printf("dlil_init\n");
+__private_extern__ void
+ifnet_head_done(void)
+{
+ lck_rw_done(&ifnet_head_lock);
+}
- TAILQ_INIT(&if_family_head);
- for (i=0; i < MAX_DL_TAGS; i++)
- dl_tag_array[i].ifp = 0;
+__private_extern__ void
+ifnet_head_assert_exclusive(void)
+{
+ lck_rw_assert(&ifnet_head_lock, LCK_RW_ASSERT_EXCLUSIVE);
+}
- for (i=0; i < MAX_DLIL_FILTERS; i++)
- dlil_filters[i].type = 0;
+/*
+ * Caller must already be holding ifnet lock.
+ */
+static int
+dlil_ifp_proto_count(struct ifnet *ifp)
+{
+ int i, count = 0;
- bzero(&dlil_stats, sizeof(dlil_stats));
+ ifnet_lock_assert(ifp, IFNET_LCK_ASSERT_OWNED);
- simple_lock_init(&dlil_input_lock);
+ if (ifp->if_proto_hash == NULL)
+ goto done;
- /*
- * Start up the dlil input thread once everything is initialized
- */
- (void) kernel_thread(kernel_task, dlil_input_thread);
+ for (i = 0; i < PROTO_HASH_SLOTS; i++) {
+ struct if_proto *proto;
+ SLIST_FOREACH(proto, &ifp->if_proto_hash[i], next_hash) {
+ count++;
+ }
+ }
+done:
+ return (count);
}
-
-u_long get_new_filter_id()
+__private_extern__ void
+dlil_post_msg(struct ifnet *ifp, u_int32_t event_subclass,
+ u_int32_t event_code, struct net_event_data *event_data,
+ u_int32_t event_data_len)
{
- u_long i;
+ struct net_event_data ev_data;
+ struct kev_msg ev_msg;
- for (i=1; i < MAX_DLIL_FILTERS; i++)
- if (dlil_filters[i].type == 0)
- return i;
-
- return 0;
-}
+ bzero(&ev_msg, sizeof (ev_msg));
+ bzero(&ev_data, sizeof (ev_data));
+ /*
+ * a net event always starts with a net_event_data structure
+ * but the caller can generate a simple net event or
+ * provide a longer event structure to post
+ */
+ ev_msg.vendor_code = KEV_VENDOR_APPLE;
+ ev_msg.kev_class = KEV_NETWORK_CLASS;
+ ev_msg.kev_subclass = event_subclass;
+ ev_msg.event_code = event_code;
+
+ if (event_data == NULL) {
+ event_data = &ev_data;
+ event_data_len = sizeof (struct net_event_data);
+ }
+ strlcpy(&event_data->if_name[0], ifp->if_name, IFNAMSIZ);
+ event_data->if_family = ifp->if_family;
+ event_data->if_unit = (u_int32_t)ifp->if_unit;
-int dlil_attach_interface_filter(struct ifnet *ifp,
- struct dlil_if_flt_str *if_filter,
- u_long *filter_id,
- int insertion_point)
-{
- int s;
- int retval;
- struct dlil_filterq_entry *tmp_ptr;
- struct dlil_filterq_entry *if_filt;
- struct dlil_filterq_head *fhead = (struct dlil_filterq_head *) &ifp->if_flt_head;
- boolean_t funnel_state;
+ ev_msg.dv[0].data_length = event_data_len;
+ ev_msg.dv[0].data_ptr = event_data;
+ ev_msg.dv[1].data_length = 0;
+ /* Don't update interface generation for quality and RRC state changess */
+ bool update_generation = (event_subclass != KEV_DL_SUBCLASS ||
+ (event_code != KEV_DL_LINK_QUALITY_METRIC_CHANGED &&
+ event_code != KEV_DL_RRC_STATE_CHANGED));
- MALLOC(tmp_ptr, struct dlil_filterq_entry *, sizeof(*tmp_ptr), M_NKE, M_WAITOK);
- if (tmp_ptr == NULL)
- return (ENOBUFS);
+ dlil_event_internal(ifp, &ev_msg, update_generation);
+}
- bcopy((caddr_t) if_filter, (caddr_t) &tmp_ptr->variants.if_filter,
- sizeof(struct dlil_if_flt_str));
+__private_extern__ int
+dlil_alloc_local_stats(struct ifnet *ifp)
+{
+ int ret = EINVAL;
+ void *buf, *base, **pbuf;
+
+ if (ifp == NULL)
+ goto end;
+
+ if (ifp->if_tcp_stat == NULL && ifp->if_udp_stat == NULL) {
+ /* allocate tcpstat_local structure */
+ buf = zalloc(dlif_tcpstat_zone);
+ if (buf == NULL) {
+ ret = ENOMEM;
+ goto end;
+ }
+ bzero(buf, dlif_tcpstat_bufsize);
+
+ /* Get the 64-bit aligned base address for this object */
+ base = (void *)P2ROUNDUP((intptr_t)buf + sizeof (u_int64_t),
+ sizeof (u_int64_t));
+ VERIFY(((intptr_t)base + dlif_tcpstat_size) <=
+ ((intptr_t)buf + dlif_tcpstat_bufsize));
+
+ /*
+ * Wind back a pointer size from the aligned base and
+ * save the original address so we can free it later.
+ */
+ pbuf = (void **)((intptr_t)base - sizeof (void *));
+ *pbuf = buf;
+ ifp->if_tcp_stat = base;
+
+ /* allocate udpstat_local structure */
+ buf = zalloc(dlif_udpstat_zone);
+ if (buf == NULL) {
+ ret = ENOMEM;
+ goto end;
+ }
+ bzero(buf, dlif_udpstat_bufsize);
+
+ /* Get the 64-bit aligned base address for this object */
+ base = (void *)P2ROUNDUP((intptr_t)buf + sizeof (u_int64_t),
+ sizeof (u_int64_t));
+ VERIFY(((intptr_t)base + dlif_udpstat_size) <=
+ ((intptr_t)buf + dlif_udpstat_bufsize));
+
+ /*
+ * Wind back a pointer size from the aligned base and
+ * save the original address so we can free it later.
+ */
+ pbuf = (void **)((intptr_t)base - sizeof (void *));
+ *pbuf = buf;
+ ifp->if_udp_stat = base;
+
+ VERIFY(IS_P2ALIGNED(ifp->if_tcp_stat, sizeof (u_int64_t)) &&
+ IS_P2ALIGNED(ifp->if_udp_stat, sizeof (u_int64_t)));
+
+ ret = 0;
+ }
- funnel_state = thread_funnel_set(network_flock, TRUE);
+ if (ifp->if_ipv4_stat == NULL) {
+ MALLOC(ifp->if_ipv4_stat, struct if_tcp_ecn_stat *,
+ sizeof (struct if_tcp_ecn_stat), M_TEMP, M_WAITOK|M_ZERO);
+ if (ifp->if_ipv4_stat == NULL) {
+ ret = ENOMEM;
+ goto end;
+ }
+ }
- s = splnet();
+ if (ifp->if_ipv6_stat == NULL) {
+ MALLOC(ifp->if_ipv6_stat, struct if_tcp_ecn_stat *,
+ sizeof (struct if_tcp_ecn_stat), M_TEMP, M_WAITOK|M_ZERO);
+ if (ifp->if_ipv6_stat == NULL) {
+ ret = ENOMEM;
+ goto end;
+ }
+ }
+end:
+ if (ret != 0) {
+ if (ifp->if_tcp_stat != NULL) {
+ pbuf = (void **)
+ ((intptr_t)ifp->if_tcp_stat - sizeof (void *));
+ zfree(dlif_tcpstat_zone, *pbuf);
+ ifp->if_tcp_stat = NULL;
+ }
+ if (ifp->if_udp_stat != NULL) {
+ pbuf = (void **)
+ ((intptr_t)ifp->if_udp_stat - sizeof (void *));
+ zfree(dlif_udpstat_zone, *pbuf);
+ ifp->if_udp_stat = NULL;
+ }
+ if (ifp->if_ipv4_stat != NULL) {
+ FREE(ifp->if_ipv4_stat, M_TEMP);
+ ifp->if_ipv4_stat = NULL;
+ }
+ if (ifp->if_ipv6_stat != NULL) {
+ FREE(ifp->if_ipv6_stat, M_TEMP);
+ ifp->if_ipv6_stat = NULL;
+ }
+ }
- if (insertion_point != DLIL_LAST_FILTER) {
- TAILQ_FOREACH(if_filt, fhead, que)
- if (insertion_point == if_filt->filter_id) {
- TAILQ_INSERT_BEFORE(if_filt, tmp_ptr, que);
- break;
- }
- }
- else
- TAILQ_INSERT_TAIL(fhead, tmp_ptr, que);
-
- if (*filter_id = get_new_filter_id()) {
- dlil_filters[*filter_id].filter_ptr = tmp_ptr;
- dlil_filters[*filter_id].head = (struct dlil_filterq_head *) &ifp->if_flt_head;
- dlil_filters[*filter_id].type = DLIL_IF_FILTER;
- dlil_filters[*filter_id].ifp = ifp;
- tmp_ptr->filter_id = *filter_id;
- tmp_ptr->type = DLIL_IF_FILTER;
- retval = 0;
- }
- else {
- kprintf("dlil_attach_interface_filter - can't alloc filter_id\n");
- TAILQ_REMOVE(fhead, tmp_ptr, que);
- FREE(tmp_ptr, M_NKE);
- retval = ENOMEM;
- }
-
- splx(s);
- thread_funnel_set(network_flock, funnel_state);
- return retval;
-}
-
-
-int dlil_attach_protocol_filter(u_long dl_tag,
- struct dlil_pr_flt_str *pr_filter,
- u_long *filter_id,
- int insertion_point)
-{
- struct dlil_filterq_entry *tmp_ptr;
- struct dlil_filterq_entry *pr_filt;
- int s;
- int retval;
- boolean_t funnel_state;
-
- if (dl_tag > MAX_DL_TAGS)
- return ERANGE;
-
- if (dl_tag_array[dl_tag].ifp == 0)
- return ENOENT;
-
- MALLOC(tmp_ptr, struct dlil_filterq_entry *, sizeof(*tmp_ptr), M_NKE, M_WAITOK);
- if (tmp_ptr == NULL)
- return (ENOBUFS);
-
- bcopy((caddr_t) pr_filter, (caddr_t) &tmp_ptr->variants.pr_filter,
- sizeof(struct dlil_pr_flt_str));
-
- funnel_state = thread_funnel_set(network_flock, TRUE);
-
- s = splnet();
- if (insertion_point != DLIL_LAST_FILTER) {
- TAILQ_FOREACH(pr_filt, dl_tag_array[dl_tag].pr_flt_head, que)
- if (insertion_point == pr_filt->filter_id) {
- TAILQ_INSERT_BEFORE(pr_filt, tmp_ptr, que);
- break;
- }
- }
- else
- TAILQ_INSERT_TAIL(dl_tag_array[dl_tag].pr_flt_head, tmp_ptr, que);
-
-
- if (*filter_id = get_new_filter_id()) {
- dlil_filters[*filter_id].filter_ptr = tmp_ptr;
- dlil_filters[*filter_id].head = dl_tag_array[dl_tag].pr_flt_head;
- dlil_filters[*filter_id].type = DLIL_PR_FILTER;
- dlil_filters[*filter_id].proto = dl_tag_array[dl_tag].proto;
- dlil_filters[*filter_id].ifp = dl_tag_array[dl_tag].ifp;
- tmp_ptr->filter_id = *filter_id;
- tmp_ptr->type = DLIL_PR_FILTER;
- retval = 0;
- }
- else {
- kprintf("dlil_attach_protocol_filter - can't alloc filter_id\n");
- TAILQ_REMOVE(dl_tag_array[dl_tag].pr_flt_head, tmp_ptr, que);
- FREE(tmp_ptr, M_NKE);
- retval = ENOMEM;
- }
-
- splx(s);
- thread_funnel_set(network_flock, funnel_state);
- return retval;
+ return (ret);
}
-
-int
-dlil_detach_filter(u_long filter_id)
+static int
+dlil_create_input_thread(ifnet_t ifp, struct dlil_threading_info *inp)
{
- struct dlil_filter_id_str *flt;
- int s;
- boolean_t funnel_state;
+ thread_continue_t func;
+ u_int32_t limit;
+ int error;
+
+ /* NULL ifp indicates the main input thread, called at dlil_init time */
+ if (ifp == NULL) {
+ func = dlil_main_input_thread_func;
+ VERIFY(inp == dlil_main_input_thread);
+ (void) strlcat(inp->input_name,
+ "main_input", DLIL_THREADNAME_LEN);
+ } else if (net_rxpoll && (ifp->if_eflags & IFEF_RXPOLL)) {
+ func = dlil_rxpoll_input_thread_func;
+ VERIFY(inp != dlil_main_input_thread);
+ (void) snprintf(inp->input_name, DLIL_THREADNAME_LEN,
+ "%s_input_poll", if_name(ifp));
+ } else {
+ func = dlil_input_thread_func;
+ VERIFY(inp != dlil_main_input_thread);
+ (void) snprintf(inp->input_name, DLIL_THREADNAME_LEN,
+ "%s_input", if_name(ifp));
+ }
+ VERIFY(inp->input_thr == THREAD_NULL);
- if (filter_id > MAX_DLIL_FILTERS) {
- kprintf("dlil_detach_filter - Bad filter_id value %d\n", filter_id);
- return ERANGE;
- }
+ inp->lck_grp = lck_grp_alloc_init(inp->input_name, dlil_grp_attributes);
+ lck_mtx_init(&inp->input_lck, inp->lck_grp, dlil_lck_attributes);
- funnel_state = thread_funnel_set(network_flock, TRUE);
- s = splnet();
- flt = &dlil_filters[filter_id];
- if (flt->type == 0) {
- kprintf("dlil_detach_filter - no such filter_id %d\n", filter_id);
- thread_funnel_set(network_flock, funnel_state);
- return ENOENT;
- }
+ inp->mode = IFNET_MODEL_INPUT_POLL_OFF;
+ inp->ifp = ifp; /* NULL for main input thread */
+ net_timerclear(&inp->mode_holdtime);
+ net_timerclear(&inp->mode_lasttime);
+ net_timerclear(&inp->sample_holdtime);
+ net_timerclear(&inp->sample_lasttime);
+ net_timerclear(&inp->dbg_lasttime);
- if (flt->type == DLIL_IF_FILTER) {
- if (IFILT(flt->filter_ptr).filter_detach)
- (*IFILT(flt->filter_ptr).filter_detach)(IFILT(flt->filter_ptr).cookie);
- }
- else {
- if (flt->type == DLIL_PR_FILTER) {
- if (PFILT(flt->filter_ptr).filter_detach)
- (*PFILT(flt->filter_ptr).filter_detach)(PFILT(flt->filter_ptr).cookie);
+ /*
+ * For interfaces that support opportunistic polling, set the
+ * low and high watermarks for outstanding inbound packets/bytes.
+ * Also define freeze times for transitioning between modes
+ * and updating the average.
+ */
+ if (ifp != NULL && net_rxpoll && (ifp->if_eflags & IFEF_RXPOLL)) {
+ limit = MAX(if_rcvq_maxlen, IF_RCVQ_MINLEN);
+ (void) dlil_rxpoll_set_params(ifp, NULL, FALSE);
+ } else {
+ limit = (u_int32_t)-1;
}
- }
- TAILQ_REMOVE(flt->head, flt->filter_ptr, que);
- FREE(flt->filter_ptr, M_NKE);
- flt->type = 0;
- splx(s);
- thread_funnel_set(network_flock, funnel_state);
- return 0;
-}
+ _qinit(&inp->rcvq_pkts, Q_DROPTAIL, limit);
+ if (inp == dlil_main_input_thread) {
+ struct dlil_main_threading_info *inpm =
+ (struct dlil_main_threading_info *)inp;
+ _qinit(&inpm->lo_rcvq_pkts, Q_DROPTAIL, limit);
+ }
+ error = kernel_thread_start(func, inp, &inp->input_thr);
+ if (error == KERN_SUCCESS) {
+ ml_thread_policy(inp->input_thr, MACHINE_GROUP,
+ (MACHINE_NETWORK_GROUP|MACHINE_NETWORK_NETISR));
+ /*
+ * We create an affinity set so that the matching workloop
+ * thread or the starter thread (for loopback) can be
+ * scheduled on the same processor set as the input thread.
+ */
+ if (net_affinity) {
+ struct thread *tp = inp->input_thr;
+ u_int32_t tag;
+ /*
+ * Randomize to reduce the probability
+ * of affinity tag namespace collision.
+ */
+ read_random(&tag, sizeof (tag));
+ if (dlil_affinity_set(tp, tag) == KERN_SUCCESS) {
+ thread_reference(tp);
+ inp->tag = tag;
+ inp->net_affinity = TRUE;
+ }
+ }
+ } else if (inp == dlil_main_input_thread) {
+ panic_plain("%s: couldn't create main input thread", __func__);
+ /* NOTREACHED */
+ } else {
+ panic_plain("%s: couldn't create %s input thread", __func__,
+ if_name(ifp));
+ /* NOTREACHED */
+ }
+ OSAddAtomic(1, &cur_dlil_input_threads);
-void
-dlil_input_thread_continue(void)
-{
- while (1) {
- struct mbuf *m, *m_loop;
- int expand_mcl;
-
- usimple_lock(&dlil_input_lock);
- m = dlil_input_mbuf_head;
- dlil_input_mbuf_head = NULL;
- dlil_input_mbuf_tail = NULL;
- m_loop = dlil_input_loop_head;
- dlil_input_loop_head = NULL;
- dlil_input_loop_tail = NULL;
- usimple_unlock(&dlil_input_lock);
-
- MBUF_LOCK();
- expand_mcl = dlil_expand_mcl;
- dlil_expand_mcl = 0;
- MBUF_UNLOCK();
- if (expand_mcl) {
- caddr_t p;
- MCLALLOC(p, M_WAIT);
- if (p) MCLFREE(p);
- }
-
- /*
- * NOTE warning %%% attention !!!!
- * We should think about putting some thread starvation safeguards if
- * we deal with long chains of packets.
- */
- while (m) {
- struct mbuf *m0 = m->m_nextpkt;
- void *header = m->m_pkthdr.header;
-
- m->m_nextpkt = NULL;
- m->m_pkthdr.header = NULL;
- (void) dlil_input_packet(m->m_pkthdr.rcvif, m, header);
- m = m0;
- }
- m = m_loop;
- while (m) {
- struct mbuf *m0 = m->m_nextpkt;
- void *header = m->m_pkthdr.header;
- struct ifnet *ifp = (struct ifnet *) m->m_pkthdr.aux;
-
- m->m_nextpkt = NULL;
- m->m_pkthdr.header = NULL;
- m->m_pkthdr.aux = NULL;
- (void) dlil_input_packet(ifp, m, header);
- m = m0;
- }
-
- if (netisr != 0)
- run_netisr();
-
- if (dlil_input_mbuf_head == NULL &&
- dlil_input_loop_head == NULL &&
- netisr == 0) {
- assert_wait(&dlil_input_thread_wakeup, THREAD_UNINT);
-#if defined (__i386__)
- thread_block(0);
-#else
- thread_block(dlil_input_thread_continue);
-#endif
- /* NOTREACHED */
- }
- }
+ return (error);
}
-void dlil_input_thread(void)
+static void
+dlil_terminate_input_thread(struct dlil_threading_info *inp)
{
- register thread_t self = current_thread();
- extern void stack_privilege(thread_t thread);
-
- printf("dlil_input_thread %x\n", self);
+ struct ifnet *ifp;
+
+ VERIFY(current_thread() == inp->input_thr);
+ VERIFY(inp != dlil_main_input_thread);
+
+ OSAddAtomic(-1, &cur_dlil_input_threads);
+
+ lck_mtx_destroy(&inp->input_lck, inp->lck_grp);
+ lck_grp_free(inp->lck_grp);
+
+ inp->input_waiting = 0;
+ inp->wtot = 0;
+ bzero(inp->input_name, sizeof (inp->input_name));
+ ifp = inp->ifp;
+ inp->ifp = NULL;
+ VERIFY(qhead(&inp->rcvq_pkts) == NULL && qempty(&inp->rcvq_pkts));
+ qlimit(&inp->rcvq_pkts) = 0;
+ bzero(&inp->stats, sizeof (inp->stats));
+
+ VERIFY(!inp->net_affinity);
+ inp->input_thr = THREAD_NULL;
+ VERIFY(inp->wloop_thr == THREAD_NULL);
+ VERIFY(inp->poll_thr == THREAD_NULL);
+ VERIFY(inp->tag == 0);
+
+ inp->mode = IFNET_MODEL_INPUT_POLL_OFF;
+ bzero(&inp->tstats, sizeof (inp->tstats));
+ bzero(&inp->pstats, sizeof (inp->pstats));
+ bzero(&inp->sstats, sizeof (inp->sstats));
+
+ net_timerclear(&inp->mode_holdtime);
+ net_timerclear(&inp->mode_lasttime);
+ net_timerclear(&inp->sample_holdtime);
+ net_timerclear(&inp->sample_lasttime);
+ net_timerclear(&inp->dbg_lasttime);
+
+#if IFNET_INPUT_SANITY_CHK
+ inp->input_mbuf_cnt = 0;
+#endif /* IFNET_INPUT_SANITY_CHK */
+
+ if (dlil_verbose) {
+ printf("%s: input thread terminated\n",
+ if_name(ifp));
+ }
- /*
- * Make sure that this thread
- * always has a kernel stack, and
- * bind it to the master cpu.
- */
- stack_privilege(self);
- ml_thread_policy(current_thread(), MACHINE_GROUP, (MACHINE_NETWORK_GROUP|MACHINE_NETWORK_NETISR));
+ /* for the extra refcnt from kernel_thread_start() */
+ thread_deallocate(current_thread());
- /* The dlil thread is always funneled */
- thread_funnel_set(network_flock, TRUE);
- dlil_initialized = 1;
- dlil_input_thread_continue();
+ /* this is the end */
+ thread_terminate(current_thread());
+ /* NOTREACHED */
}
-int
-dlil_input(struct ifnet *ifp, struct mbuf *m_head, struct mbuf *m_tail)
-{
- /* WARNING
- * Because of loopbacked multicast we cannot stuff the ifp in
- * the rcvif of the packet header: loopback has its own dlil
- * input queue
- */
-
- usimple_lock(&dlil_input_lock);
- if (ifp->if_type != IFT_LOOP) {
- if (dlil_input_mbuf_head == NULL)
- dlil_input_mbuf_head = m_head;
- else if (dlil_input_mbuf_tail != NULL)
- dlil_input_mbuf_tail->m_nextpkt = m_head;
- dlil_input_mbuf_tail = m_tail ? m_tail : m_head;
- } else {
- if (dlil_input_loop_head == NULL)
- dlil_input_loop_head = m_head;
- else if (dlil_input_loop_tail != NULL)
- dlil_input_loop_tail->m_nextpkt = m_head;
- dlil_input_loop_tail = m_tail ? m_tail : m_head;
- }
- usimple_unlock(&dlil_input_lock);
-
- wakeup((caddr_t)&dlil_input_thread_wakeup);
-
- return 0;
+static kern_return_t
+dlil_affinity_set(struct thread *tp, u_int32_t tag)
+{
+ thread_affinity_policy_data_t policy;
+
+ bzero(&policy, sizeof (policy));
+ policy.affinity_tag = tag;
+ return (thread_policy_set(tp, THREAD_AFFINITY_POLICY,
+ (thread_policy_t)&policy, THREAD_AFFINITY_POLICY_COUNT));
}
-int
-dlil_input_packet(struct ifnet *ifp, struct mbuf *m,
- char *frame_header)
-{
- struct ifnet *orig_ifp = 0;
- struct dlil_filterq_entry *tmp;
- int retval;
- struct if_proto *ifproto = 0;
- struct if_proto *proto;
- struct dlil_filterq_head *fhead = (struct dlil_filterq_head *) &ifp->if_flt_head;
-
-
- KERNEL_DEBUG(DBG_FNC_DLIL_INPUT | DBG_FUNC_START,0,0,0,0,0);
-
- /*
- * Run interface filters
- */
-
- while (orig_ifp != ifp) {
- orig_ifp = ifp;
-
- TAILQ_FOREACH_REVERSE(tmp, fhead, que, dlil_filterq_head) {
- if (IFILT(tmp).filter_if_input) {
- retval = (*IFILT(tmp).filter_if_input)(IFILT(tmp).cookie,
- &ifp,
- &m,
- &frame_header);
- if (retval) {
- if (retval == EJUSTRETURN)
- return 0;
- else {
- m_freem(m);
- return retval;
- }
- }
- }
+void
+dlil_init(void)
+{
+ thread_t thread = THREAD_NULL;
- if (ifp != orig_ifp)
- break;
- }
- }
+ /*
+ * The following fields must be 64-bit aligned for atomic operations.
+ */
+ IF_DATA_REQUIRE_ALIGNED_64(ifi_ipackets);
+ IF_DATA_REQUIRE_ALIGNED_64(ifi_ierrors);
+ IF_DATA_REQUIRE_ALIGNED_64(ifi_opackets);
+ IF_DATA_REQUIRE_ALIGNED_64(ifi_oerrors);
+ IF_DATA_REQUIRE_ALIGNED_64(ifi_collisions);
+ IF_DATA_REQUIRE_ALIGNED_64(ifi_ibytes);
+ IF_DATA_REQUIRE_ALIGNED_64(ifi_obytes);
+ IF_DATA_REQUIRE_ALIGNED_64(ifi_imcasts);
+ IF_DATA_REQUIRE_ALIGNED_64(ifi_omcasts);
+ IF_DATA_REQUIRE_ALIGNED_64(ifi_iqdrops);
+ IF_DATA_REQUIRE_ALIGNED_64(ifi_noproto);
+ IF_DATA_REQUIRE_ALIGNED_64(ifi_alignerrs);
+ IF_DATA_REQUIRE_ALIGNED_64(ifi_dt_bytes);
+ IF_DATA_REQUIRE_ALIGNED_64(ifi_fpackets);
+ IF_DATA_REQUIRE_ALIGNED_64(ifi_fbytes);
+
+ IFNET_IF_DATA_REQUIRE_ALIGNED_64(ifi_ipackets);
+ IFNET_IF_DATA_REQUIRE_ALIGNED_64(ifi_ierrors);
+ IFNET_IF_DATA_REQUIRE_ALIGNED_64(ifi_opackets);
+ IFNET_IF_DATA_REQUIRE_ALIGNED_64(ifi_oerrors);
+ IFNET_IF_DATA_REQUIRE_ALIGNED_64(ifi_collisions);
+ IFNET_IF_DATA_REQUIRE_ALIGNED_64(ifi_ibytes);
+ IFNET_IF_DATA_REQUIRE_ALIGNED_64(ifi_obytes);
+ IFNET_IF_DATA_REQUIRE_ALIGNED_64(ifi_imcasts);
+ IFNET_IF_DATA_REQUIRE_ALIGNED_64(ifi_omcasts);
+ IFNET_IF_DATA_REQUIRE_ALIGNED_64(ifi_iqdrops);
+ IFNET_IF_DATA_REQUIRE_ALIGNED_64(ifi_noproto);
+ IFNET_IF_DATA_REQUIRE_ALIGNED_64(ifi_alignerrs);
+ IFNET_IF_DATA_REQUIRE_ALIGNED_64(ifi_dt_bytes);
+ IFNET_IF_DATA_REQUIRE_ALIGNED_64(ifi_fpackets);
+ IFNET_IF_DATA_REQUIRE_ALIGNED_64(ifi_fbytes);
- ifp->if_lastchange = time;
-
- /*
- * Call family demux module. If the demux module finds a match
- * for the frame it will fill-in the ifproto pointer.
- */
+ /*
+ * These IF_HWASSIST_ flags must be equal to their IFNET_* counterparts.
+ */
+ _CASSERT(IF_HWASSIST_CSUM_IP == IFNET_CSUM_IP);
+ _CASSERT(IF_HWASSIST_CSUM_TCP == IFNET_CSUM_TCP);
+ _CASSERT(IF_HWASSIST_CSUM_UDP == IFNET_CSUM_UDP);
+ _CASSERT(IF_HWASSIST_CSUM_IP_FRAGS == IFNET_CSUM_FRAGMENT);
+ _CASSERT(IF_HWASSIST_CSUM_FRAGMENT == IFNET_IP_FRAGMENT);
+ _CASSERT(IF_HWASSIST_CSUM_TCPIPV6 == IFNET_CSUM_TCPIPV6);
+ _CASSERT(IF_HWASSIST_CSUM_UDPIPV6 == IFNET_CSUM_UDPIPV6);
+ _CASSERT(IF_HWASSIST_CSUM_FRAGMENT_IPV6 == IFNET_IPV6_FRAGMENT);
+ _CASSERT(IF_HWASSIST_CSUM_PARTIAL == IFNET_CSUM_PARTIAL);
+ _CASSERT(IF_HWASSIST_VLAN_TAGGING == IFNET_VLAN_TAGGING);
+ _CASSERT(IF_HWASSIST_VLAN_MTU == IFNET_VLAN_MTU);
+ _CASSERT(IF_HWASSIST_TSO_V4 == IFNET_TSO_IPV4);
+ _CASSERT(IF_HWASSIST_TSO_V6 == IFNET_TSO_IPV6);
- retval = (*ifp->if_demux)(ifp, m, frame_header, &ifproto );
+ /*
+ * ... as well as the mbuf checksum flags counterparts.
+ */
+ _CASSERT(CSUM_IP == IF_HWASSIST_CSUM_IP);
+ _CASSERT(CSUM_TCP == IF_HWASSIST_CSUM_TCP);
+ _CASSERT(CSUM_UDP == IF_HWASSIST_CSUM_UDP);
+ _CASSERT(CSUM_IP_FRAGS == IF_HWASSIST_CSUM_IP_FRAGS);
+ _CASSERT(CSUM_FRAGMENT == IF_HWASSIST_CSUM_FRAGMENT);
+ _CASSERT(CSUM_TCPIPV6 == IF_HWASSIST_CSUM_TCPIPV6);
+ _CASSERT(CSUM_UDPIPV6 == IF_HWASSIST_CSUM_UDPIPV6);
+ _CASSERT(CSUM_FRAGMENT_IPV6 == IF_HWASSIST_CSUM_FRAGMENT_IPV6);
+ _CASSERT(CSUM_PARTIAL == IF_HWASSIST_CSUM_PARTIAL);
+ _CASSERT(CSUM_VLAN_TAG_VALID == IF_HWASSIST_VLAN_TAGGING);
- if (m->m_flags & (M_BCAST|M_MCAST))
- ifp->if_imcasts++;
-
- if ((retval) && (retval != EJUSTRETURN) && (ifp->offercnt)) {
/*
- * No match was found, look for any offers.
+ * Make sure we have at least IF_LLREACH_MAXLEN in the llreach info.
*/
- struct dlil_proto_head *tmp = (struct dlil_proto_head *) &ifp->proto_head;
- TAILQ_FOREACH(proto, tmp, next) {
- if ((proto->dl_offer) && (proto->dl_offer(m, frame_header) == 0)) {
- ifproto = proto;
- retval = 0;
- break;
- }
+ _CASSERT(IF_LLREACH_MAXLEN <= IF_LLREACHINFO_ADDRLEN);
+ _CASSERT(IFNET_LLREACHINFO_ADDRLEN == IF_LLREACHINFO_ADDRLEN);
+
+ _CASSERT(IFRLOGF_DLIL == IFNET_LOGF_DLIL);
+ _CASSERT(IFRLOGF_FAMILY == IFNET_LOGF_FAMILY);
+ _CASSERT(IFRLOGF_DRIVER == IFNET_LOGF_DRIVER);
+ _CASSERT(IFRLOGF_FIRMWARE == IFNET_LOGF_FIRMWARE);
+
+ _CASSERT(IFRLOGCAT_CONNECTIVITY == IFNET_LOGCAT_CONNECTIVITY);
+ _CASSERT(IFRLOGCAT_QUALITY == IFNET_LOGCAT_QUALITY);
+ _CASSERT(IFRLOGCAT_PERFORMANCE == IFNET_LOGCAT_PERFORMANCE);
+
+ _CASSERT(IFRTYPE_FAMILY_ANY == IFNET_FAMILY_ANY);
+ _CASSERT(IFRTYPE_FAMILY_LOOPBACK == IFNET_FAMILY_LOOPBACK);
+ _CASSERT(IFRTYPE_FAMILY_ETHERNET == IFNET_FAMILY_ETHERNET);
+ _CASSERT(IFRTYPE_FAMILY_SLIP == IFNET_FAMILY_SLIP);
+ _CASSERT(IFRTYPE_FAMILY_TUN == IFNET_FAMILY_TUN);
+ _CASSERT(IFRTYPE_FAMILY_VLAN == IFNET_FAMILY_VLAN);
+ _CASSERT(IFRTYPE_FAMILY_PPP == IFNET_FAMILY_PPP);
+ _CASSERT(IFRTYPE_FAMILY_PVC == IFNET_FAMILY_PVC);
+ _CASSERT(IFRTYPE_FAMILY_DISC == IFNET_FAMILY_DISC);
+ _CASSERT(IFRTYPE_FAMILY_MDECAP == IFNET_FAMILY_MDECAP);
+ _CASSERT(IFRTYPE_FAMILY_GIF == IFNET_FAMILY_GIF);
+ _CASSERT(IFRTYPE_FAMILY_FAITH == IFNET_FAMILY_FAITH);
+ _CASSERT(IFRTYPE_FAMILY_STF == IFNET_FAMILY_STF);
+ _CASSERT(IFRTYPE_FAMILY_FIREWIRE == IFNET_FAMILY_FIREWIRE);
+ _CASSERT(IFRTYPE_FAMILY_BOND == IFNET_FAMILY_BOND);
+ _CASSERT(IFRTYPE_FAMILY_CELLULAR == IFNET_FAMILY_CELLULAR);
+
+ _CASSERT(IFRTYPE_SUBFAMILY_ANY == IFNET_SUBFAMILY_ANY);
+ _CASSERT(IFRTYPE_SUBFAMILY_USB == IFNET_SUBFAMILY_USB);
+ _CASSERT(IFRTYPE_SUBFAMILY_BLUETOOTH == IFNET_SUBFAMILY_BLUETOOTH);
+ _CASSERT(IFRTYPE_SUBFAMILY_WIFI == IFNET_SUBFAMILY_WIFI);
+ _CASSERT(IFRTYPE_SUBFAMILY_THUNDERBOLT == IFNET_SUBFAMILY_THUNDERBOLT);
+ _CASSERT(IFRTYPE_SUBFAMILY_RESERVED == IFNET_SUBFAMILY_RESERVED);
+ _CASSERT(IFRTYPE_SUBFAMILY_INTCOPROC == IFNET_SUBFAMILY_INTCOPROC);
+
+ _CASSERT(DLIL_MODIDLEN == IFNET_MODIDLEN);
+ _CASSERT(DLIL_MODARGLEN == IFNET_MODARGLEN);
+
+ PE_parse_boot_argn("net_affinity", &net_affinity,
+ sizeof (net_affinity));
+
+ PE_parse_boot_argn("net_rxpoll", &net_rxpoll, sizeof (net_rxpoll));
+
+ PE_parse_boot_argn("net_rtref", &net_rtref, sizeof (net_rtref));
+
+ PE_parse_boot_argn("ifnet_debug", &ifnet_debug, sizeof (ifnet_debug));
+
+ dlif_size = (ifnet_debug == 0) ? sizeof (struct dlil_ifnet) :
+ sizeof (struct dlil_ifnet_dbg);
+ /* Enforce 64-bit alignment for dlil_ifnet structure */
+ dlif_bufsize = dlif_size + sizeof (void *) + sizeof (u_int64_t);
+ dlif_bufsize = P2ROUNDUP(dlif_bufsize, sizeof (u_int64_t));
+ dlif_zone = zinit(dlif_bufsize, DLIF_ZONE_MAX * dlif_bufsize,
+ 0, DLIF_ZONE_NAME);
+ if (dlif_zone == NULL) {
+ panic_plain("%s: failed allocating %s", __func__,
+ DLIF_ZONE_NAME);
+ /* NOTREACHED */
}
- }
-
- if (retval) {
- if (retval != EJUSTRETURN) {
- m_freem(m);
- return retval;
+ zone_change(dlif_zone, Z_EXPAND, TRUE);
+ zone_change(dlif_zone, Z_CALLERACCT, FALSE);
+
+ dlif_filt_size = sizeof (struct ifnet_filter);
+ dlif_filt_zone = zinit(dlif_filt_size,
+ DLIF_FILT_ZONE_MAX * dlif_filt_size, 0, DLIF_FILT_ZONE_NAME);
+ if (dlif_filt_zone == NULL) {
+ panic_plain("%s: failed allocating %s", __func__,
+ DLIF_FILT_ZONE_NAME);
+ /* NOTREACHED */
}
- else
- return 0;
- }
- else
- if (ifproto == 0) {
- printf("ERROR - dlil_input - if_demux didn't return an if_proto pointer\n");
- m_freem(m);
- return 0;
+ zone_change(dlif_filt_zone, Z_EXPAND, TRUE);
+ zone_change(dlif_filt_zone, Z_CALLERACCT, FALSE);
+
+ dlif_phash_size = sizeof (struct proto_hash_entry) * PROTO_HASH_SLOTS;
+ dlif_phash_zone = zinit(dlif_phash_size,
+ DLIF_PHASH_ZONE_MAX * dlif_phash_size, 0, DLIF_PHASH_ZONE_NAME);
+ if (dlif_phash_zone == NULL) {
+ panic_plain("%s: failed allocating %s", __func__,
+ DLIF_PHASH_ZONE_NAME);
+ /* NOTREACHED */
}
+ zone_change(dlif_phash_zone, Z_EXPAND, TRUE);
+ zone_change(dlif_phash_zone, Z_CALLERACCT, FALSE);
+
+ dlif_proto_size = sizeof (struct if_proto);
+ dlif_proto_zone = zinit(dlif_proto_size,
+ DLIF_PROTO_ZONE_MAX * dlif_proto_size, 0, DLIF_PROTO_ZONE_NAME);
+ if (dlif_proto_zone == NULL) {
+ panic_plain("%s: failed allocating %s", __func__,
+ DLIF_PROTO_ZONE_NAME);
+ /* NOTREACHED */
+ }
+ zone_change(dlif_proto_zone, Z_EXPAND, TRUE);
+ zone_change(dlif_proto_zone, Z_CALLERACCT, FALSE);
+
+ dlif_tcpstat_size = sizeof (struct tcpstat_local);
+ /* Enforce 64-bit alignment for tcpstat_local structure */
+ dlif_tcpstat_bufsize =
+ dlif_tcpstat_size + sizeof (void *) + sizeof (u_int64_t);
+ dlif_tcpstat_bufsize =
+ P2ROUNDUP(dlif_tcpstat_bufsize, sizeof (u_int64_t));
+ dlif_tcpstat_zone = zinit(dlif_tcpstat_bufsize,
+ DLIF_TCPSTAT_ZONE_MAX * dlif_tcpstat_bufsize, 0,
+ DLIF_TCPSTAT_ZONE_NAME);
+ if (dlif_tcpstat_zone == NULL) {
+ panic_plain("%s: failed allocating %s", __func__,
+ DLIF_TCPSTAT_ZONE_NAME);
+ /* NOTREACHED */
+ }
+ zone_change(dlif_tcpstat_zone, Z_EXPAND, TRUE);
+ zone_change(dlif_tcpstat_zone, Z_CALLERACCT, FALSE);
+
+ dlif_udpstat_size = sizeof (struct udpstat_local);
+ /* Enforce 64-bit alignment for udpstat_local structure */
+ dlif_udpstat_bufsize =
+ dlif_udpstat_size + sizeof (void *) + sizeof (u_int64_t);
+ dlif_udpstat_bufsize =
+ P2ROUNDUP(dlif_udpstat_bufsize, sizeof (u_int64_t));
+ dlif_udpstat_zone = zinit(dlif_udpstat_bufsize,
+ DLIF_TCPSTAT_ZONE_MAX * dlif_udpstat_bufsize, 0,
+ DLIF_UDPSTAT_ZONE_NAME);
+ if (dlif_udpstat_zone == NULL) {
+ panic_plain("%s: failed allocating %s", __func__,
+ DLIF_UDPSTAT_ZONE_NAME);
+ /* NOTREACHED */
+ }
+ zone_change(dlif_udpstat_zone, Z_EXPAND, TRUE);
+ zone_change(dlif_udpstat_zone, Z_CALLERACCT, FALSE);
+
+ ifnet_llreach_init();
+
+ TAILQ_INIT(&dlil_ifnet_head);
+ TAILQ_INIT(&ifnet_head);
+ TAILQ_INIT(&ifnet_detaching_head);
+ TAILQ_INIT(&ifnet_ordered_head);
+
+ /* Setup the lock groups we will use */
+ dlil_grp_attributes = lck_grp_attr_alloc_init();
+
+ dlil_lock_group = lck_grp_alloc_init("DLIL internal locks",
+ dlil_grp_attributes);
+ ifnet_lock_group = lck_grp_alloc_init("ifnet locks",
+ dlil_grp_attributes);
+ ifnet_head_lock_group = lck_grp_alloc_init("ifnet head lock",
+ dlil_grp_attributes);
+ ifnet_rcv_lock_group = lck_grp_alloc_init("ifnet rcv locks",
+ dlil_grp_attributes);
+ ifnet_snd_lock_group = lck_grp_alloc_init("ifnet snd locks",
+ dlil_grp_attributes);
+
+ /* Setup the lock attributes we will use */
+ dlil_lck_attributes = lck_attr_alloc_init();
+
+ ifnet_lock_attr = lck_attr_alloc_init();
+
+ lck_rw_init(&ifnet_head_lock, ifnet_head_lock_group,
+ dlil_lck_attributes);
+ lck_mtx_init(&dlil_ifnet_lock, dlil_lock_group, dlil_lck_attributes);
+
+ /* Setup interface flow control related items */
+ lck_mtx_init(&ifnet_fc_lock, dlil_lock_group, dlil_lck_attributes);
+
+ ifnet_fc_zone_size = sizeof (struct ifnet_fc_entry);
+ ifnet_fc_zone = zinit(ifnet_fc_zone_size,
+ IFNET_FC_ZONE_MAX * ifnet_fc_zone_size, 0, IFNET_FC_ZONE_NAME);
+ if (ifnet_fc_zone == NULL) {
+ panic_plain("%s: failed allocating %s", __func__,
+ IFNET_FC_ZONE_NAME);
+ /* NOTREACHED */
+ }
+ zone_change(ifnet_fc_zone, Z_EXPAND, TRUE);
+ zone_change(ifnet_fc_zone, Z_CALLERACCT, FALSE);
-/*
- * Call any attached protocol filters.
- */
+ /* Initialize interface address subsystem */
+ ifa_init();
- TAILQ_FOREACH_REVERSE(tmp, &ifproto->pr_flt_head, que, dlil_filterq_head) {
- if (PFILT(tmp).filter_dl_input) {
- retval = (*PFILT(tmp).filter_dl_input)(PFILT(tmp).cookie,
- &m,
- &frame_header,
- &ifp);
+#if PF
+ /* Initialize the packet filter */
+ pfinit();
+#endif /* PF */
- if (retval) {
- if (retval == EJUSTRETURN)
- return 0;
- else {
- m_freem(m);
- return retval;
- }
- }
- }
- }
+ /* Initialize queue algorithms */
+ classq_init();
+ /* Initialize packet schedulers */
+ pktsched_init();
+ /* Initialize flow advisory subsystem */
+ flowadv_init();
- retval = (*ifproto->dl_input)(m, frame_header,
- ifp, ifproto->dl_tag,
- TRUE);
-
- if (retval == EJUSTRETURN)
- retval = 0;
- else
- if (retval)
- m_freem(m);
+ /* Initialize the pktap virtual interface */
+ pktap_init();
- KERNEL_DEBUG(DBG_FNC_DLIL_INPUT | DBG_FUNC_END,0,0,0,0,0);
- return retval;
-}
+ /* Initialize the service class to dscp map */
+ net_qos_map_init();
+#if DEBUG
+ /* Run self-tests */
+ dlil_verify_sum16();
+#endif /* DEBUG */
+ /*
+ * Create and start up the main DLIL input thread and the interface
+ * detacher threads once everything is initialized.
+ */
+ dlil_create_input_thread(NULL, dlil_main_input_thread);
-void ether_input(ifp, eh, m)
- struct ifnet *ifp;
- struct ether_header *eh;
- struct mbuf *m;
+ if (kernel_thread_start(ifnet_detacher_thread_func,
+ NULL, &thread) != KERN_SUCCESS) {
+ panic_plain("%s: couldn't create detacher thread", __func__);
+ /* NOTREACHED */
+ }
+ thread_deallocate(thread);
+}
+static void
+if_flt_monitor_busy(struct ifnet *ifp)
{
- kprintf("Someone is calling ether_input!!\n");
+ lck_mtx_assert(&ifp->if_flt_lock, LCK_MTX_ASSERT_OWNED);
- dlil_input(ifp, m, NULL);
+ ++ifp->if_flt_busy;
+ VERIFY(ifp->if_flt_busy != 0);
}
-
-int
-dlil_event(struct ifnet *ifp, struct kern_event_msg *event)
+static void
+if_flt_monitor_unbusy(struct ifnet *ifp)
{
- struct dlil_filterq_entry *filt;
- int retval = 0;
- struct ifnet *orig_ifp = 0;
- struct if_proto *proto;
- struct dlil_filterq_head *fhead = (struct dlil_filterq_head *) &ifp->if_flt_head;
- struct kev_msg kev_msg;
- struct dlil_proto_head *tmp = (struct dlil_proto_head *) &ifp->proto_head;
- boolean_t funnel_state;
+ if_flt_monitor_leave(ifp);
+}
+static void
+if_flt_monitor_enter(struct ifnet *ifp)
+{
+ lck_mtx_assert(&ifp->if_flt_lock, LCK_MTX_ASSERT_OWNED);
- funnel_state = thread_funnel_set(network_flock, TRUE);
+ while (ifp->if_flt_busy) {
+ ++ifp->if_flt_waiters;
+ (void) msleep(&ifp->if_flt_head, &ifp->if_flt_lock,
+ (PZERO - 1), "if_flt_monitor", NULL);
+ }
+ if_flt_monitor_busy(ifp);
+}
- while (orig_ifp != ifp) {
- orig_ifp = ifp;
+static void
+if_flt_monitor_leave(struct ifnet *ifp)
+{
+ lck_mtx_assert(&ifp->if_flt_lock, LCK_MTX_ASSERT_OWNED);
- TAILQ_FOREACH_REVERSE(filt, fhead, que, dlil_filterq_head) {
- if (IFILT(filt).filter_if_event) {
- retval = (*IFILT(filt).filter_if_event)(IFILT(filt).cookie,
- &ifp,
- &event);
-
- if (retval) {
- (void) thread_funnel_set(network_flock, funnel_state);
- if (retval == EJUSTRETURN)
- return 0;
- else
- return retval;
- }
- }
+ VERIFY(ifp->if_flt_busy != 0);
+ --ifp->if_flt_busy;
- if (ifp != orig_ifp)
- break;
+ if (ifp->if_flt_busy == 0 && ifp->if_flt_waiters > 0) {
+ ifp->if_flt_waiters = 0;
+ wakeup(&ifp->if_flt_head);
}
- }
+}
+__private_extern__ int
+dlil_attach_filter(struct ifnet *ifp, const struct iff_filter *if_filter,
+ interface_filter_t *filter_ref, u_int32_t flags)
+{
+ int retval = 0;
+ struct ifnet_filter *filter = NULL;
+
+ ifnet_head_lock_shared();
+ /* Check that the interface is in the global list */
+ if (!ifnet_lookup(ifp)) {
+ retval = ENXIO;
+ goto done;
+ }
- /*
- * Call Interface Module event hook, if any.
- */
+ filter = zalloc(dlif_filt_zone);
+ if (filter == NULL) {
+ retval = ENOMEM;
+ goto done;
+ }
+ bzero(filter, dlif_filt_size);
+
+ /* refcnt held above during lookup */
+ filter->filt_flags = flags;
+ filter->filt_ifp = ifp;
+ filter->filt_cookie = if_filter->iff_cookie;
+ filter->filt_name = if_filter->iff_name;
+ filter->filt_protocol = if_filter->iff_protocol;
+ /*
+ * Do not install filter callbacks for internal coproc interface
+ */
+ if (!IFNET_IS_INTCOPROC(ifp)) {
+ filter->filt_input = if_filter->iff_input;
+ filter->filt_output = if_filter->iff_output;
+ filter->filt_event = if_filter->iff_event;
+ filter->filt_ioctl = if_filter->iff_ioctl;
+ }
+ filter->filt_detached = if_filter->iff_detached;
- if (ifp->if_event) {
- retval = ifp->if_event(ifp, (caddr_t) event);
+ lck_mtx_lock(&ifp->if_flt_lock);
+ if_flt_monitor_enter(ifp);
- if (retval) {
- (void) thread_funnel_set(network_flock, funnel_state);
+ lck_mtx_assert(&ifp->if_flt_lock, LCK_MTX_ASSERT_OWNED);
+ TAILQ_INSERT_TAIL(&ifp->if_flt_head, filter, filt_next);
- if (retval == EJUSTRETURN)
- return 0;
- else
- return retval;
- }
- }
+ if_flt_monitor_leave(ifp);
+ lck_mtx_unlock(&ifp->if_flt_lock);
- /*
- * Call dl_event entry point for all protocols attached to this interface
- */
+ *filter_ref = filter;
- TAILQ_FOREACH(proto, tmp, next) {
/*
- * Call any attached protocol filters.
+ * Bump filter count and route_generation ID to let TCP
+ * know it shouldn't do TSO on this connection
*/
+ if ((filter->filt_flags & DLIL_IFF_TSO) == 0) {
+ OSAddAtomic(1, &dlil_filter_disable_tso_count);
+ routegenid_update();
+ }
+ if (dlil_verbose) {
+ printf("%s: %s filter attached\n", if_name(ifp),
+ if_filter->iff_name);
+ }
+done:
+ ifnet_head_done();
+ if (retval != 0 && ifp != NULL) {
+ DLIL_PRINTF("%s: failed to attach %s (err=%d)\n",
+ if_name(ifp), if_filter->iff_name, retval);
+ }
+ if (retval != 0 && filter != NULL)
+ zfree(dlif_filt_zone, filter);
- TAILQ_FOREACH_REVERSE(filt, &proto->pr_flt_head, que, dlil_filterq_head) {
- if (PFILT(filt).filter_dl_event) {
- retval = (*PFILT(filt).filter_dl_event)(PFILT(filt).cookie,
- event);
-
- if (retval) {
- (void) thread_funnel_set(network_flock, funnel_state);
- if (retval == EJUSTRETURN)
- return 0;
- else
- return retval;
- }
- }
- }
+ return (retval);
+}
+static int
+dlil_detach_filter_internal(interface_filter_t filter, int detached)
+{
+ int retval = 0;
+
+ if (detached == 0) {
+ ifnet_t ifp = NULL;
+
+ ifnet_head_lock_shared();
+ TAILQ_FOREACH(ifp, &ifnet_head, if_link) {
+ interface_filter_t entry = NULL;
+
+ lck_mtx_lock(&ifp->if_flt_lock);
+ TAILQ_FOREACH(entry, &ifp->if_flt_head, filt_next) {
+ if (entry != filter || entry->filt_skip)
+ continue;
+ /*
+ * We've found a match; since it's possible
+ * that the thread gets blocked in the monitor,
+ * we do the lock dance. Interface should
+ * not be detached since we still have a use
+ * count held during filter attach.
+ */
+ entry->filt_skip = 1; /* skip input/output */
+ lck_mtx_unlock(&ifp->if_flt_lock);
+ ifnet_head_done();
+
+ lck_mtx_lock(&ifp->if_flt_lock);
+ if_flt_monitor_enter(ifp);
+ lck_mtx_assert(&ifp->if_flt_lock,
+ LCK_MTX_ASSERT_OWNED);
+
+ /* Remove the filter from the list */
+ TAILQ_REMOVE(&ifp->if_flt_head, filter,
+ filt_next);
+
+ if_flt_monitor_leave(ifp);
+ lck_mtx_unlock(&ifp->if_flt_lock);
+ if (dlil_verbose) {
+ printf("%s: %s filter detached\n",
+ if_name(ifp), filter->filt_name);
+ }
+ goto destroy;
+ }
+ lck_mtx_unlock(&ifp->if_flt_lock);
+ }
+ ifnet_head_done();
- /*
- * Finally, call the dl_event entry point (if any)
- */
+ /* filter parameter is not a valid filter ref */
+ retval = EINVAL;
+ goto done;
+ }
- if (proto->dl_event)
- retval = (*proto->dl_event)(event, proto->dl_tag);
+ if (dlil_verbose)
+ printf("%s filter detached\n", filter->filt_name);
- if (retval == EJUSTRETURN) {
- (void) thread_funnel_set(network_flock, funnel_state);
- return 0;
- }
- }
-
+destroy:
- /*
- * Now, post this event to the Kernel Event message queue
- */
+ /* Call the detached function if there is one */
+ if (filter->filt_detached)
+ filter->filt_detached(filter->filt_cookie, filter->filt_ifp);
- kev_msg.vendor_code = event->vendor_code;
- kev_msg.kev_class = event->kev_class;
- kev_msg.kev_subclass = event->kev_subclass;
- kev_msg.event_code = event->event_code;
- kev_msg.dv[0].data_ptr = &event->event_data[0];
- kev_msg.dv[0].data_length = event->total_size - KEV_MSG_HEADER_SIZE;
- kev_msg.dv[1].data_length = 0;
+ /*
+ * Decrease filter count and route_generation ID to let TCP
+ * know it should reevalute doing TSO or not
+ */
+ if ((filter->filt_flags & DLIL_IFF_TSO) == 0) {
+ OSAddAtomic(-1, &dlil_filter_disable_tso_count);
+ routegenid_update();
+ }
- kev_post_msg(&kev_msg);
+ /* Free the filter */
+ zfree(dlif_filt_zone, filter);
+ filter = NULL;
+done:
+ if (retval != 0 && filter != NULL) {
+ DLIL_PRINTF("failed to detach %s filter (err=%d)\n",
+ filter->filt_name, retval);
+ }
- (void) thread_funnel_set(network_flock, funnel_state);
- return 0;
+ return (retval);
}
+__private_extern__ void
+dlil_detach_filter(interface_filter_t filter)
+{
+ if (filter == NULL)
+ return;
+ dlil_detach_filter_internal(filter, 0);
+}
-
-int
-dlil_output(u_long dl_tag,
- struct mbuf *m,
- caddr_t route,
- struct sockaddr *dest,
- int raw
- )
-{
- char *frame_type;
- char *dst_linkaddr;
- struct ifnet *orig_ifp = 0;
- struct ifnet *ifp;
- struct if_proto *proto;
- struct dlil_filterq_entry *tmp;
- int retval = 0;
- char frame_type_buffer[MAX_FRAME_TYPE_SIZE * 4];
- char dst_linkaddr_buffer[MAX_LINKADDR * 4];
- struct dlil_filterq_head *fhead;
-
-
- KERNEL_DEBUG(DBG_FNC_DLIL_OUTPUT | DBG_FUNC_START,0,0,0,0,0);
-
- /*
- * Temporary hackery until all the existing protocols can become fully
- * "dl_tag aware". Some things only have the ifp, so this handles that
- * case for the time being.
- */
-
- if (dl_tag > MAX_DL_TAGS) {
- /* dl_tag is really an ifnet pointer! */
-
- ifp = (struct ifnet *) dl_tag;
- dl_tag = ifp->if_data.default_proto;
- if (dl_tag)
- proto = dl_tag_array[dl_tag].proto;
- else
- retval = ENOENT;
- }
- else {
- if ((dl_tag == 0) || (dl_tag_array[dl_tag].ifp == 0))
- retval = ENOENT;
- else {
- ifp = dl_tag_array[dl_tag].ifp;
- proto = dl_tag_array[dl_tag].proto;
- }
- }
-
- if (retval) {
- m_freem(m);
- return retval;
- }
-
- frame_type = frame_type_buffer;
- dst_linkaddr = dst_linkaddr_buffer;
-
- fhead = (struct dlil_filterq_head *) &ifp->if_flt_head;
-
- if ((raw == 0) && (proto->dl_pre_output)) {
- retval = (*proto->dl_pre_output)(ifp, &m, dest, route,
- frame_type, dst_linkaddr, dl_tag);
- if (retval) {
- if (retval == EJUSTRETURN)
- return 0;
- else {
- m_freem(m);
- return retval;
- }
- }
- }
-
/*
- * Run any attached protocol filters.
+ * Main input thread:
+ *
+ * a) handles all inbound packets for lo0
+ * b) handles all inbound packets for interfaces with no dedicated
+ * input thread (e.g. anything but Ethernet/PDP or those that support
+ * opportunistic polling.)
+ * c) protocol registrations
+ * d) packet injections
*/
-
- if (TAILQ_EMPTY(dl_tag_array[dl_tag].pr_flt_head) == 0) {
- TAILQ_FOREACH(tmp, dl_tag_array[dl_tag].pr_flt_head, que) {
- if (PFILT(tmp).filter_dl_output) {
- retval = (*PFILT(tmp).filter_dl_output)(PFILT(tmp).cookie,
- &m, &ifp, &dest, dst_linkaddr, frame_type);
- if (retval) {
- if (retval == EJUSTRETURN)
- return 0;
- else {
- m_freem(m);
- return retval;
- }
+__attribute__((noreturn))
+static void
+dlil_main_input_thread_func(void *v, wait_result_t w)
+{
+#pragma unused(w)
+ struct dlil_main_threading_info *inpm = v;
+ struct dlil_threading_info *inp = v;
+
+ VERIFY(inp == dlil_main_input_thread);
+ VERIFY(inp->ifp == NULL);
+ VERIFY(inp->mode == IFNET_MODEL_INPUT_POLL_OFF);
+
+ while (1) {
+ struct mbuf *m = NULL, *m_loop = NULL;
+ u_int32_t m_cnt, m_cnt_loop;
+ boolean_t proto_req;
+
+ lck_mtx_lock_spin(&inp->input_lck);
+
+ /* Wait until there is work to be done */
+ while (!(inp->input_waiting & ~DLIL_INPUT_RUNNING)) {
+ inp->input_waiting &= ~DLIL_INPUT_RUNNING;
+ (void) msleep(&inp->input_waiting, &inp->input_lck,
+ (PZERO - 1) | PSPIN, inp->input_name, NULL);
}
- }
- }
- }
+ inp->input_waiting |= DLIL_INPUT_RUNNING;
+ inp->input_waiting &= ~DLIL_INPUT_WAITING;
-/*
- * Call framing module
- */
- if ((raw == 0) && (ifp->if_framer)) {
- retval = (*ifp->if_framer)(ifp, &m, dest, dst_linkaddr, frame_type);
- if (retval) {
- if (retval == EJUSTRETURN)
- return 0;
- else
- {
- m_freem(m);
- return retval;
- }
- }
- }
-
-#if BRIDGE
- if (do_bridge) {
- struct mbuf *m0 = m ;
-
- if (m->m_pkthdr.rcvif)
- m->m_pkthdr.rcvif = NULL ;
- ifp = bridge_dst_lookup(m);
- bdg_forward(&m0, ifp);
- if (m0)
- m_freem(m0);
-
- return 0;
- }
-#endif
+ /* Main input thread cannot be terminated */
+ VERIFY(!(inp->input_waiting & DLIL_INPUT_TERMINATE));
+ proto_req = (inp->input_waiting &
+ (DLIL_PROTO_WAITING | DLIL_PROTO_REGISTER));
-/*
- * Let interface filters (if any) do their thing ...
- */
+ /* Packets for non-dedicated interfaces other than lo0 */
+ m_cnt = qlen(&inp->rcvq_pkts);
+ m = _getq_all(&inp->rcvq_pkts, NULL, NULL, NULL);
- fhead = (struct dlil_filterq_head *) &ifp->if_flt_head;
- if (TAILQ_EMPTY(fhead) == 0) {
- while (orig_ifp != ifp) {
- orig_ifp = ifp;
- TAILQ_FOREACH(tmp, fhead, que) {
- if (IFILT(tmp).filter_if_output) {
- retval = (*IFILT(tmp).filter_if_output)(IFILT(tmp).cookie,
- &ifp,
- &m);
- if (retval) {
- if (retval == EJUSTRETURN)
- return 0;
- else {
- m_freem(m);
- return retval;
- }
- }
+ /* Packets exclusive to lo0 */
+ m_cnt_loop = qlen(&inpm->lo_rcvq_pkts);
+ m_loop = _getq_all(&inpm->lo_rcvq_pkts, NULL, NULL, NULL);
- }
-
- if (ifp != orig_ifp)
- break;
- }
- }
- }
+ inp->wtot = 0;
-/*
- * Finally, call the driver.
- */
+ lck_mtx_unlock(&inp->input_lck);
- KERNEL_DEBUG(DBG_FNC_DLIL_IFOUT | DBG_FUNC_START, 0,0,0,0,0);
- retval = (*ifp->if_output)(ifp, m);
- KERNEL_DEBUG(DBG_FNC_DLIL_IFOUT | DBG_FUNC_END, 0,0,0,0,0);
+ /*
+ * NOTE warning %%% attention !!!!
+ * We should think about putting some thread starvation
+ * safeguards if we deal with long chains of packets.
+ */
+ if (m_loop != NULL)
+ dlil_input_packet_list_extended(lo_ifp, m_loop,
+ m_cnt_loop, inp->mode);
- KERNEL_DEBUG(DBG_FNC_DLIL_OUTPUT | DBG_FUNC_END,0,0,0,0,0);
+ if (m != NULL)
+ dlil_input_packet_list_extended(NULL, m,
+ m_cnt, inp->mode);
- if ((retval == 0) || (retval == EJUSTRETURN))
- return 0;
- else
- return retval;
-}
+ if (proto_req)
+ proto_input_run();
+ }
+ /* NOTREACHED */
+ VERIFY(0); /* we should never get here */
+}
-int
-dlil_ioctl(u_long proto_fam,
- struct ifnet *ifp,
- u_long ioctl_code,
- caddr_t ioctl_arg)
-{
- struct dlil_filterq_entry *tmp;
- struct dlil_filterq_head *fhead;
- int retval = EOPNOTSUPP;
- int retval2 = EOPNOTSUPP;
- u_long dl_tag;
- struct if_family_str *if_family;
-
-
- if (proto_fam) {
- retval = dlil_find_dltag(ifp->if_family, ifp->if_unit,
- proto_fam, &dl_tag);
-
- if (retval == 0) {
- if (dl_tag_array[dl_tag].ifp != ifp)
- return ENOENT;
-
/*
- * Run any attached protocol filters.
+ * Input thread for interfaces with legacy input model.
*/
- TAILQ_FOREACH(tmp, dl_tag_array[dl_tag].pr_flt_head, que) {
- if (PFILT(tmp).filter_dl_ioctl) {
- retval =
- (*PFILT(tmp).filter_dl_ioctl)(PFILT(tmp).cookie,
- dl_tag_array[dl_tag].ifp,
- ioctl_code,
- ioctl_arg);
-
- if (retval) {
- if (retval == EJUSTRETURN)
- return 0;
- else
- return retval;
- }
- }
- }
-
- if (dl_tag_array[dl_tag].proto->dl_ioctl)
- retval =
- (*dl_tag_array[dl_tag].proto->dl_ioctl)(dl_tag,
- dl_tag_array[dl_tag].ifp,
- ioctl_code,
- ioctl_arg);
- else
- retval = EOPNOTSUPP;
- }
- else
- retval = 0;
- }
-
- if ((retval) && (retval != EOPNOTSUPP)) {
- if (retval == EJUSTRETURN)
- return 0;
- else
- return retval;
- }
-
-
- fhead = (struct dlil_filterq_head *) &ifp->if_flt_head;
- TAILQ_FOREACH(tmp, fhead, que) {
- if (IFILT(tmp).filter_if_ioctl) {
- retval2 = (*IFILT(tmp).filter_if_ioctl)(IFILT(tmp).cookie, ifp,
- ioctl_code, ioctl_arg);
- if (retval2) {
- if (retval2 == EJUSTRETURN)
- return 0;
- else
- return retval2;
- }
- }
- }
-
-
- if_family = find_family_module(ifp->if_family);
- if ((if_family) && (if_family->ifmod_ioctl)) {
- retval2 = (*if_family->ifmod_ioctl)(ifp, ioctl_code, ioctl_arg);
-
- if ((retval2) && (retval2 != EOPNOTSUPP)) {
- if (retval2 == EJUSTRETURN)
- return 0;
- else
- return retval;
- }
-
- if (retval == EOPNOTSUPP)
- retval = retval2;
- }
-
- if (ifp->if_ioctl)
- retval2 = (*ifp->if_ioctl)(ifp, ioctl_code, ioctl_arg);
-
- if (retval == EOPNOTSUPP)
- return retval2;
- else {
- if (retval2 == EOPNOTSUPP)
- return 0;
- else
- return retval2;
- }
-}
+static void
+dlil_input_thread_func(void *v, wait_result_t w)
+{
+#pragma unused(w)
+ char thread_name[MAXTHREADNAMESIZE];
+ struct dlil_threading_info *inp = v;
+ struct ifnet *ifp = inp->ifp;
+
+ /* Construct the name for this thread, and then apply it. */
+ bzero(thread_name, sizeof(thread_name));
+ snprintf(thread_name, sizeof(thread_name), "dlil_input_%s", ifp->if_xname);
+ thread_set_thread_name(inp->input_thr, thread_name);
+
+ VERIFY(inp != dlil_main_input_thread);
+ VERIFY(ifp != NULL);
+ VERIFY(!(ifp->if_eflags & IFEF_RXPOLL) || !net_rxpoll);
+ VERIFY(inp->mode == IFNET_MODEL_INPUT_POLL_OFF);
+
+ while (1) {
+ struct mbuf *m = NULL;
+ u_int32_t m_cnt;
+
+ lck_mtx_lock_spin(&inp->input_lck);
+
+ /* Wait until there is work to be done */
+ while (!(inp->input_waiting & ~DLIL_INPUT_RUNNING)) {
+ inp->input_waiting &= ~DLIL_INPUT_RUNNING;
+ (void) msleep(&inp->input_waiting, &inp->input_lck,
+ (PZERO - 1) | PSPIN, inp->input_name, NULL);
+ }
+ inp->input_waiting |= DLIL_INPUT_RUNNING;
+ inp->input_waiting &= ~DLIL_INPUT_WAITING;
+
+ /*
+ * Protocol registration and injection must always use
+ * the main input thread; in theory the latter can utilize
+ * the corresponding input thread where the packet arrived
+ * on, but that requires our knowing the interface in advance
+ * (and the benefits might not worth the trouble.)
+ */
+ VERIFY(!(inp->input_waiting &
+ (DLIL_PROTO_WAITING|DLIL_PROTO_REGISTER)));
+
+ /* Packets for this interface */
+ m_cnt = qlen(&inp->rcvq_pkts);
+ m = _getq_all(&inp->rcvq_pkts, NULL, NULL, NULL);
+
+ if (inp->input_waiting & DLIL_INPUT_TERMINATE) {
+ lck_mtx_unlock(&inp->input_lck);
+
+ /* Free up pending packets */
+ if (m != NULL)
+ mbuf_freem_list(m);
+
+ dlil_terminate_input_thread(inp);
+ /* NOTREACHED */
+ return;
+ }
-int
-dlil_attach_protocol(struct dlil_proto_reg_str *proto,
- u_long *dl_tag)
-{
- struct ifnet *ifp;
- struct if_proto *ifproto;
- u_long i;
- struct if_family_str *if_family;
- int error;
- struct dlil_proto_head *tmp;
- struct kev_dl_proto_data ev_pr_data;
- int s;
- boolean_t funnel_state;
-
-
- if ((proto->protocol_family == 0) || (proto->interface_family == 0))
- return EINVAL;
-
- funnel_state = thread_funnel_set(network_flock, TRUE);
- s = splnet();
- if_family = find_family_module(proto->interface_family);
- if ((!if_family) || (if_family->flags & DLIL_SHUTDOWN)) {
- kprintf("dlil_attach_protocol -- no interface family module %d",
- proto->interface_family);
- splx(s);
- thread_funnel_set(network_flock, funnel_state);
- return ENOENT;
- }
-
- ifp = ifbyfamily(proto->interface_family, proto->unit_number);
- if (!ifp) {
- kprintf("dlil_attach_protocol -- no such interface %d unit %d\n",
- proto->interface_family, proto->unit_number);
- splx(s);
- thread_funnel_set(network_flock, funnel_state);
- return ENOENT;
- }
-
- if (dlil_find_dltag(proto->interface_family, proto->unit_number,
- proto->protocol_family, &i) == 0) {
- thread_funnel_set(network_flock, funnel_state);
- return EEXIST;
- }
-
- for (i=1; i < MAX_DL_TAGS; i++)
- if (dl_tag_array[i].ifp == 0)
- break;
-
- if (i >= MAX_DL_TAGS) {
- splx(s);
- thread_funnel_set(network_flock, funnel_state);
- return ENOMEM;
- }
-
- /*
- * Allocate and init a new if_proto structure
- */
-
- ifproto = _MALLOC(sizeof(struct if_proto), M_IFADDR, M_WAITOK);
- if (!ifproto) {
- printf("ERROR - DLIL failed if_proto allocation\n");
- thread_funnel_set(network_flock, funnel_state);
- return ENOMEM;
- }
-
- bzero(ifproto, sizeof(struct if_proto));
-
- dl_tag_array[i].ifp = ifp;
- dl_tag_array[i].proto = ifproto;
- dl_tag_array[i].pr_flt_head = &ifproto->pr_flt_head;
- ifproto->dl_tag = i;
- *dl_tag = i;
-
- if (proto->default_proto) {
- if (ifp->if_data.default_proto == 0)
- ifp->if_data.default_proto = i;
- else
- printf("ERROR - dlil_attach_protocol -- Attempt to attach more than one default protocol\n");
- }
-
- ifproto->protocol_family = proto->protocol_family;
- ifproto->dl_input = proto->input;
- ifproto->dl_pre_output = proto->pre_output;
- ifproto->dl_event = proto->event;
- ifproto->dl_offer = proto->offer;
- ifproto->dl_ioctl = proto->ioctl;
- ifproto->ifp = ifp;
- TAILQ_INIT(&ifproto->pr_flt_head);
-
- /*
- * Call family module add_proto routine so it can refine the
- * demux descriptors as it wishes.
- */
- error = (*if_family->add_proto)(&proto->demux_desc_head, ifproto, *dl_tag);
- if (error) {
- dl_tag_array[*dl_tag].ifp = 0;
- FREE(ifproto, M_IFADDR);
- splx(s);
- thread_funnel_set(network_flock, funnel_state);
- return error;
- }
-
- /*
- * Add to if_proto list for this interface
- */
-
- tmp = (struct dlil_proto_head *) &ifp->proto_head;
- TAILQ_INSERT_TAIL(tmp, ifproto, next);
- ifp->refcnt++;
- if (ifproto->dl_offer)
- ifp->offercnt++;
-
- /* the reserved field carries the number of protocol still attached (subject to change) */
- ev_pr_data.proto_family = proto->protocol_family;
- ev_pr_data.proto_remaining_count = dlil_ifp_proto_count(ifp);
- dlil_post_msg(ifp, KEV_DL_SUBCLASS, KEV_DL_PROTO_ATTACHED,
- (struct net_event_data *)&ev_pr_data,
- sizeof(struct kev_dl_proto_data));
-
- splx(s);
- thread_funnel_set(network_flock, funnel_state);
- return 0;
-}
+ inp->wtot = 0;
+ dlil_input_stats_sync(ifp, inp);
+ lck_mtx_unlock(&inp->input_lck);
-int
-dlil_detach_protocol(u_long dl_tag)
-{
- struct ifnet *ifp;
- struct ifnet *orig_ifp=0;
- struct if_proto *proto;
- struct dlil_proto_head *tmp;
- struct if_family_str *if_family;
- struct dlil_filterq_entry *filter;
- int s, retval;
- struct dlil_filterq_head *fhead;
- struct kev_dl_proto_data ev_pr_data;
- boolean_t funnel_state;
-
+ /*
+ * NOTE warning %%% attention !!!!
+ * We should think about putting some thread starvation
+ * safeguards if we deal with long chains of packets.
+ */
+ if (m != NULL)
+ dlil_input_packet_list_extended(NULL, m,
+ m_cnt, inp->mode);
+ }
- if (dl_tag > MAX_DL_TAGS)
- return ERANGE;
+ /* NOTREACHED */
+ VERIFY(0); /* we should never get here */
+}
- funnel_state = thread_funnel_set(network_flock, TRUE);
+/*
+ * Input thread for interfaces with opportunistic polling input model.
+ */
+static void
+dlil_rxpoll_input_thread_func(void *v, wait_result_t w)
+{
+#pragma unused(w)
+ struct dlil_threading_info *inp = v;
+ struct ifnet *ifp = inp->ifp;
+ struct timespec ts;
+
+ VERIFY(inp != dlil_main_input_thread);
+ VERIFY(ifp != NULL && (ifp->if_eflags & IFEF_RXPOLL));
+
+ while (1) {
+ struct mbuf *m = NULL;
+ u_int32_t m_cnt, m_size, poll_req = 0;
+ ifnet_model_t mode;
+ struct timespec now, delta;
+ u_int64_t ival;
+
+ lck_mtx_lock_spin(&inp->input_lck);
+
+ if ((ival = inp->rxpoll_ival) < IF_RXPOLL_INTERVALTIME_MIN)
+ ival = IF_RXPOLL_INTERVALTIME_MIN;
+
+ /* Link parameters changed? */
+ if (ifp->if_poll_update != 0) {
+ ifp->if_poll_update = 0;
+ (void) dlil_rxpoll_set_params(ifp, NULL, TRUE);
+ }
- s = splnet();
- if (dl_tag_array[dl_tag].ifp == 0) {
- splx(s);
- thread_funnel_set(network_flock, funnel_state);
- return ENOENT;
- }
+ /* Current operating mode */
+ mode = inp->mode;
- ifp = dl_tag_array[dl_tag].ifp;
- proto = dl_tag_array[dl_tag].proto;
+ /* Wait until there is work to be done */
+ while (!(inp->input_waiting & ~DLIL_INPUT_RUNNING)) {
+ inp->input_waiting &= ~DLIL_INPUT_RUNNING;
+ (void) msleep(&inp->input_waiting, &inp->input_lck,
+ (PZERO - 1) | PSPIN, inp->input_name, NULL);
+ }
- if_family = find_family_module(ifp->if_family);
- if (if_family == NULL) {
- splx(s);
- thread_funnel_set(network_flock, funnel_state);
- return ENOENT;
- }
+ inp->input_waiting |= DLIL_INPUT_RUNNING;
+ inp->input_waiting &= ~DLIL_INPUT_WAITING;
+
+ /*
+ * Protocol registration and injection must always use
+ * the main input thread; in theory the latter can utilize
+ * the corresponding input thread where the packet arrived
+ * on, but that requires our knowing the interface in advance
+ * (and the benefits might not worth the trouble.)
+ */
+ VERIFY(!(inp->input_waiting &
+ (DLIL_PROTO_WAITING|DLIL_PROTO_REGISTER)));
+
+ if (inp->input_waiting & DLIL_INPUT_TERMINATE) {
+ /* Free up pending packets */
+ _flushq(&inp->rcvq_pkts);
+ lck_mtx_unlock(&inp->input_lck);
+
+ dlil_terminate_input_thread(inp);
+ /* NOTREACHED */
+ return;
+ }
- tmp = (struct dlil_proto_head *) &ifp->proto_head;
+ /* Total count of all packets */
+ m_cnt = qlen(&inp->rcvq_pkts);
+
+ /* Total bytes of all packets */
+ m_size = qsize(&inp->rcvq_pkts);
+
+ /* Packets for this interface */
+ m = _getq_all(&inp->rcvq_pkts, NULL, NULL, NULL);
+ VERIFY(m != NULL || m_cnt == 0);
+
+ nanouptime(&now);
+ if (!net_timerisset(&inp->sample_lasttime))
+ *(&inp->sample_lasttime) = *(&now);
+
+ net_timersub(&now, &inp->sample_lasttime, &delta);
+ if (if_rxpoll && net_timerisset(&inp->sample_holdtime)) {
+ u_int32_t ptot, btot;
+
+ /* Accumulate statistics for current sampling */
+ PKTCNTR_ADD(&inp->sstats, m_cnt, m_size);
+
+ if (net_timercmp(&delta, &inp->sample_holdtime, <))
+ goto skip;
+
+ *(&inp->sample_lasttime) = *(&now);
+
+ /* Calculate min/max of inbound bytes */
+ btot = (u_int32_t)inp->sstats.bytes;
+ if (inp->rxpoll_bmin == 0 || inp->rxpoll_bmin > btot)
+ inp->rxpoll_bmin = btot;
+ if (btot > inp->rxpoll_bmax)
+ inp->rxpoll_bmax = btot;
+
+ /* Calculate EWMA of inbound bytes */
+ DLIL_EWMA(inp->rxpoll_bavg, btot, if_rxpoll_decay);
+
+ /* Calculate min/max of inbound packets */
+ ptot = (u_int32_t)inp->sstats.packets;
+ if (inp->rxpoll_pmin == 0 || inp->rxpoll_pmin > ptot)
+ inp->rxpoll_pmin = ptot;
+ if (ptot > inp->rxpoll_pmax)
+ inp->rxpoll_pmax = ptot;
+
+ /* Calculate EWMA of inbound packets */
+ DLIL_EWMA(inp->rxpoll_pavg, ptot, if_rxpoll_decay);
+
+ /* Reset sampling statistics */
+ PKTCNTR_CLEAR(&inp->sstats);
+
+ /* Calculate EWMA of wakeup requests */
+ DLIL_EWMA(inp->rxpoll_wavg, inp->wtot, if_rxpoll_decay);
+ inp->wtot = 0;
+
+ if (dlil_verbose) {
+ if (!net_timerisset(&inp->dbg_lasttime))
+ *(&inp->dbg_lasttime) = *(&now);
+ net_timersub(&now, &inp->dbg_lasttime, &delta);
+ if (net_timercmp(&delta, &dlil_dbgrate, >=)) {
+ *(&inp->dbg_lasttime) = *(&now);
+ printf("%s: [%s] pkts avg %d max %d "
+ "limits [%d/%d], wreq avg %d "
+ "limits [%d/%d], bytes avg %d "
+ "limits [%d/%d]\n", if_name(ifp),
+ (inp->mode ==
+ IFNET_MODEL_INPUT_POLL_ON) ?
+ "ON" : "OFF", inp->rxpoll_pavg,
+ inp->rxpoll_pmax,
+ inp->rxpoll_plowat,
+ inp->rxpoll_phiwat,
+ inp->rxpoll_wavg,
+ inp->rxpoll_wlowat,
+ inp->rxpoll_whiwat,
+ inp->rxpoll_bavg,
+ inp->rxpoll_blowat,
+ inp->rxpoll_bhiwat);
+ }
+ }
- /*
- * Call family module del_proto
- */
+ /* Perform mode transition, if necessary */
+ if (!net_timerisset(&inp->mode_lasttime))
+ *(&inp->mode_lasttime) = *(&now);
+
+ net_timersub(&now, &inp->mode_lasttime, &delta);
+ if (net_timercmp(&delta, &inp->mode_holdtime, <))
+ goto skip;
+
+ if (inp->rxpoll_pavg <= inp->rxpoll_plowat &&
+ inp->rxpoll_bavg <= inp->rxpoll_blowat &&
+ inp->mode != IFNET_MODEL_INPUT_POLL_OFF) {
+ mode = IFNET_MODEL_INPUT_POLL_OFF;
+ } else if (inp->rxpoll_pavg >= inp->rxpoll_phiwat &&
+ (inp->rxpoll_bavg >= inp->rxpoll_bhiwat ||
+ inp->rxpoll_wavg >= inp->rxpoll_whiwat) &&
+ inp->mode != IFNET_MODEL_INPUT_POLL_ON) {
+ mode = IFNET_MODEL_INPUT_POLL_ON;
+ }
- (*if_family->del_proto)(proto, dl_tag);
+ if (mode != inp->mode) {
+ inp->mode = mode;
+ *(&inp->mode_lasttime) = *(&now);
+ poll_req++;
+ }
+ }
+skip:
+ dlil_input_stats_sync(ifp, inp);
+
+ lck_mtx_unlock(&inp->input_lck);
+
+ /*
+ * If there's a mode change and interface is still attached,
+ * perform a downcall to the driver for the new mode. Also
+ * hold an IO refcnt on the interface to prevent it from
+ * being detached (will be release below.)
+ */
+ if (poll_req != 0 && ifnet_is_attached(ifp, 1)) {
+ struct ifnet_model_params p = { mode, { 0 } };
+ errno_t err;
+
+ if (dlil_verbose) {
+ printf("%s: polling is now %s, "
+ "pkts avg %d max %d limits [%d/%d], "
+ "wreq avg %d limits [%d/%d], "
+ "bytes avg %d limits [%d/%d]\n",
+ if_name(ifp),
+ (mode == IFNET_MODEL_INPUT_POLL_ON) ?
+ "ON" : "OFF", inp->rxpoll_pavg,
+ inp->rxpoll_pmax, inp->rxpoll_plowat,
+ inp->rxpoll_phiwat, inp->rxpoll_wavg,
+ inp->rxpoll_wlowat, inp->rxpoll_whiwat,
+ inp->rxpoll_bavg, inp->rxpoll_blowat,
+ inp->rxpoll_bhiwat);
+ }
+ if ((err = ((*ifp->if_input_ctl)(ifp,
+ IFNET_CTL_SET_INPUT_MODEL, sizeof (p), &p))) != 0) {
+ printf("%s: error setting polling mode "
+ "to %s (%d)\n", if_name(ifp),
+ (mode == IFNET_MODEL_INPUT_POLL_ON) ?
+ "ON" : "OFF", err);
+ }
- /*
- * Remove and deallocate any attached protocol filters
- */
+ switch (mode) {
+ case IFNET_MODEL_INPUT_POLL_OFF:
+ ifnet_set_poll_cycle(ifp, NULL);
+ inp->rxpoll_offreq++;
+ if (err != 0)
+ inp->rxpoll_offerr++;
+ break;
+
+ case IFNET_MODEL_INPUT_POLL_ON:
+ net_nsectimer(&ival, &ts);
+ ifnet_set_poll_cycle(ifp, &ts);
+ ifnet_poll(ifp);
+ inp->rxpoll_onreq++;
+ if (err != 0)
+ inp->rxpoll_onerr++;
+ break;
+
+ default:
+ VERIFY(0);
+ /* NOTREACHED */
+ }
- while (filter = TAILQ_FIRST(&proto->pr_flt_head))
- dlil_detach_filter(filter->filter_id);
-
- if (proto->dl_offer)
- ifp->offercnt--;
+ /* Release the IO refcnt */
+ ifnet_decr_iorefcnt(ifp);
+ }
- if (ifp->if_data.default_proto == dl_tag)
- ifp->if_data.default_proto = 0;
- dl_tag_array[dl_tag].ifp = 0;
-
- /* the reserved field carries the number of protocol still attached (subject to change) */
- ev_pr_data.proto_family = proto->protocol_family;
- TAILQ_REMOVE(tmp, proto, next);
- FREE(proto, M_IFADDR);
+ /*
+ * NOTE warning %%% attention !!!!
+ * We should think about putting some thread starvation
+ * safeguards if we deal with long chains of packets.
+ */
+ if (m != NULL)
+ dlil_input_packet_list_extended(NULL, m, m_cnt, mode);
+ }
- ifp->refcnt--;
- ev_pr_data.proto_remaining_count = dlil_ifp_proto_count(ifp);
- dlil_post_msg(ifp, KEV_DL_SUBCLASS, KEV_DL_PROTO_DETACHED,
- (struct net_event_data *)&ev_pr_data,
- sizeof(struct kev_dl_proto_data));
+ /* NOTREACHED */
+ VERIFY(0); /* we should never get here */
+}
- if (ifp->refcnt == 0 && (ifp->if_eflags & IFEF_DETACH_DISABLED) == 0) {
- if (ifp->if_flags & IFF_UP)
- printf("WARNING - dlil_detach_protocol - ifp refcnt 0, but IF still up\n");
+/*
+ * Must be called on an attached ifnet (caller is expected to check.)
+ * Caller may pass NULL for poll parameters to indicate "auto-tuning."
+ */
+errno_t
+dlil_rxpoll_set_params(struct ifnet *ifp, struct ifnet_poll_params *p,
+ boolean_t locked)
+{
+ struct dlil_threading_info *inp;
+ u_int64_t sample_holdtime, inbw;
+
+ VERIFY(ifp != NULL);
+ if (!(ifp->if_eflags & IFEF_RXPOLL) || (inp = ifp->if_inp) == NULL)
+ return (ENXIO);
+
+ if (p != NULL) {
+ if ((p->packets_lowat == 0 && p->packets_hiwat != 0) ||
+ (p->packets_lowat != 0 && p->packets_hiwat == 0))
+ return (EINVAL);
+ if (p->packets_lowat != 0 && /* hiwat must be non-zero */
+ p->packets_lowat >= p->packets_hiwat)
+ return (EINVAL);
+ if ((p->bytes_lowat == 0 && p->bytes_hiwat != 0) ||
+ (p->bytes_lowat != 0 && p->bytes_hiwat == 0))
+ return (EINVAL);
+ if (p->bytes_lowat != 0 && /* hiwat must be non-zero */
+ p->bytes_lowat >= p->bytes_hiwat)
+ return (EINVAL);
+ if (p->interval_time != 0 &&
+ p->interval_time < IF_RXPOLL_INTERVALTIME_MIN)
+ p->interval_time = IF_RXPOLL_INTERVALTIME_MIN;
+ }
- TAILQ_REMOVE(&ifnet, ifp, if_link);
+ if (!locked)
+ lck_mtx_lock(&inp->input_lck);
- (*if_family->del_if)(ifp);
+ lck_mtx_assert(&inp->input_lck, LCK_MTX_ASSERT_OWNED);
- if (--if_family->refcnt == 0) {
- if (if_family->shutdown)
- (*if_family->shutdown)();
-
- TAILQ_REMOVE(&if_family_head, if_family, if_fam_next);
- FREE(if_family, M_IFADDR);
+ /*
+ * Normally, we'd reset the parameters to the auto-tuned values
+ * if the the input thread detects a change in link rate. If the
+ * driver provides its own parameters right after a link rate
+ * changes, but before the input thread gets to run, we want to
+ * make sure to keep the driver's values. Clearing if_poll_update
+ * will achieve that.
+ */
+ if (p != NULL && !locked && ifp->if_poll_update != 0)
+ ifp->if_poll_update = 0;
+
+ if ((inbw = ifnet_input_linkrate(ifp)) == 0 && p == NULL) {
+ sample_holdtime = 0; /* polling is disabled */
+ inp->rxpoll_wlowat = inp->rxpoll_plowat =
+ inp->rxpoll_blowat = 0;
+ inp->rxpoll_whiwat = inp->rxpoll_phiwat =
+ inp->rxpoll_bhiwat = (u_int32_t)-1;
+ inp->rxpoll_plim = 0;
+ inp->rxpoll_ival = IF_RXPOLL_INTERVALTIME_MIN;
+ } else {
+ u_int32_t plowat, phiwat, blowat, bhiwat, plim;
+ u_int64_t ival;
+ unsigned int n, i;
+
+ for (n = 0, i = 0; rxpoll_tbl[i].speed != 0; i++) {
+ if (inbw < rxpoll_tbl[i].speed)
+ break;
+ n = i;
+ }
+ /* auto-tune if caller didn't specify a value */
+ plowat = ((p == NULL || p->packets_lowat == 0) ?
+ rxpoll_tbl[n].plowat : p->packets_lowat);
+ phiwat = ((p == NULL || p->packets_hiwat == 0) ?
+ rxpoll_tbl[n].phiwat : p->packets_hiwat);
+ blowat = ((p == NULL || p->bytes_lowat == 0) ?
+ rxpoll_tbl[n].blowat : p->bytes_lowat);
+ bhiwat = ((p == NULL || p->bytes_hiwat == 0) ?
+ rxpoll_tbl[n].bhiwat : p->bytes_hiwat);
+ plim = ((p == NULL || p->packets_limit == 0) ?
+ if_rxpoll_max : p->packets_limit);
+ ival = ((p == NULL || p->interval_time == 0) ?
+ if_rxpoll_interval_time : p->interval_time);
+
+ VERIFY(plowat != 0 && phiwat != 0);
+ VERIFY(blowat != 0 && bhiwat != 0);
+ VERIFY(ival >= IF_RXPOLL_INTERVALTIME_MIN);
+
+ sample_holdtime = if_rxpoll_sample_holdtime;
+ inp->rxpoll_wlowat = if_rxpoll_wlowat;
+ inp->rxpoll_whiwat = if_rxpoll_whiwat;
+ inp->rxpoll_plowat = plowat;
+ inp->rxpoll_phiwat = phiwat;
+ inp->rxpoll_blowat = blowat;
+ inp->rxpoll_bhiwat = bhiwat;
+ inp->rxpoll_plim = plim;
+ inp->rxpoll_ival = ival;
}
- fhead = (struct dlil_filterq_head *) &ifp->if_flt_head;
- while (orig_ifp != ifp) {
- orig_ifp = ifp;
+ net_nsectimer(&if_rxpoll_mode_holdtime, &inp->mode_holdtime);
+ net_nsectimer(&sample_holdtime, &inp->sample_holdtime);
+
+ if (dlil_verbose) {
+ printf("%s: speed %llu bps, sample per %llu nsec, "
+ "poll interval %llu nsec, pkts per poll %u, "
+ "pkt limits [%u/%u], wreq limits [%u/%u], "
+ "bytes limits [%u/%u]\n", if_name(ifp),
+ inbw, sample_holdtime, inp->rxpoll_ival, inp->rxpoll_plim,
+ inp->rxpoll_plowat, inp->rxpoll_phiwat, inp->rxpoll_wlowat,
+ inp->rxpoll_whiwat, inp->rxpoll_blowat, inp->rxpoll_bhiwat);
+ }
+
+ if (!locked)
+ lck_mtx_unlock(&inp->input_lck);
+
+ return (0);
+}
+
+/*
+ * Must be called on an attached ifnet (caller is expected to check.)
+ */
+errno_t
+dlil_rxpoll_get_params(struct ifnet *ifp, struct ifnet_poll_params *p)
+{
+ struct dlil_threading_info *inp;
+
+ VERIFY(ifp != NULL && p != NULL);
+ if (!(ifp->if_eflags & IFEF_RXPOLL) || (inp = ifp->if_inp) == NULL)
+ return (ENXIO);
+
+ bzero(p, sizeof (*p));
+
+ lck_mtx_lock(&inp->input_lck);
+ p->packets_limit = inp->rxpoll_plim;
+ p->packets_lowat = inp->rxpoll_plowat;
+ p->packets_hiwat = inp->rxpoll_phiwat;
+ p->bytes_lowat = inp->rxpoll_blowat;
+ p->bytes_hiwat = inp->rxpoll_bhiwat;
+ p->interval_time = inp->rxpoll_ival;
+ lck_mtx_unlock(&inp->input_lck);
+
+ return (0);
+}
+
+errno_t
+ifnet_input(struct ifnet *ifp, struct mbuf *m_head,
+ const struct ifnet_stat_increment_param *s)
+{
+ return (ifnet_input_common(ifp, m_head, NULL, s, FALSE, FALSE));
+}
+
+errno_t
+ifnet_input_extended(struct ifnet *ifp, struct mbuf *m_head,
+ struct mbuf *m_tail, const struct ifnet_stat_increment_param *s)
+{
+ return (ifnet_input_common(ifp, m_head, m_tail, s, TRUE, FALSE));
+}
+
+static errno_t
+ifnet_input_common(struct ifnet *ifp, struct mbuf *m_head, struct mbuf *m_tail,
+ const struct ifnet_stat_increment_param *s, boolean_t ext, boolean_t poll)
+{
+ ifnet_input_handler_func handler_func;
+ struct ifnet_stat_increment_param _s;
+ u_int32_t m_cnt = 0, m_size = 0;
+ struct mbuf *last;
+ errno_t err = 0;
+
+ if ((m_head == NULL && !poll) || (s == NULL && ext)) {
+ if (m_head != NULL)
+ mbuf_freem_list(m_head);
+ return (EINVAL);
+ }
+
+ VERIFY(m_head != NULL || (s == NULL && m_tail == NULL && !ext && poll));
+ VERIFY(m_tail == NULL || ext);
+ VERIFY(s != NULL || !ext);
+
+ /*
+ * Drop the packet(s) if the parameters are invalid, or if the
+ * interface is no longer attached; else hold an IO refcnt to
+ * prevent it from being detached (will be released below.)
+ */
+ if (ifp == NULL || (ifp != lo_ifp && !ifnet_is_attached(ifp, 1))) {
+ if (m_head != NULL)
+ mbuf_freem_list(m_head);
+ return (EINVAL);
+ }
+
+ handler_func = ifp->if_input_handler;
+ VERIFY(handler_func != NULL);
+
+ if (m_tail == NULL) {
+ last = m_head;
+ while (m_head != NULL) {
+#if IFNET_INPUT_SANITY_CHK
+ if (dlil_input_sanity_check != 0)
+ DLIL_INPUT_CHECK(last, ifp);
+#endif /* IFNET_INPUT_SANITY_CHK */
+ m_cnt++;
+ m_size += m_length(last);
+ if (mbuf_nextpkt(last) == NULL)
+ break;
+ last = mbuf_nextpkt(last);
+ }
+ m_tail = last;
+ } else {
+#if IFNET_INPUT_SANITY_CHK
+ if (dlil_input_sanity_check != 0) {
+ last = m_head;
+ while (1) {
+ DLIL_INPUT_CHECK(last, ifp);
+ m_cnt++;
+ m_size += m_length(last);
+ if (mbuf_nextpkt(last) == NULL)
+ break;
+ last = mbuf_nextpkt(last);
+ }
+ } else {
+ m_cnt = s->packets_in;
+ m_size = s->bytes_in;
+ last = m_tail;
+ }
+#else
+ m_cnt = s->packets_in;
+ m_size = s->bytes_in;
+ last = m_tail;
+#endif /* IFNET_INPUT_SANITY_CHK */
+ }
+
+ if (last != m_tail) {
+ panic_plain("%s: invalid input packet chain for %s, "
+ "tail mbuf %p instead of %p\n", __func__, if_name(ifp),
+ m_tail, last);
+ }
+
+ /*
+ * Assert packet count only for the extended variant, for backwards
+ * compatibility, since this came directly from the device driver.
+ * Relax this assertion for input bytes, as the driver may have
+ * included the link-layer headers in the computation; hence
+ * m_size is just an approximation.
+ */
+ if (ext && s->packets_in != m_cnt) {
+ panic_plain("%s: input packet count mismatch for %s, "
+ "%d instead of %d\n", __func__, if_name(ifp),
+ s->packets_in, m_cnt);
+ }
+
+ if (s == NULL) {
+ bzero(&_s, sizeof (_s));
+ s = &_s;
+ } else {
+ _s = *s;
+ }
+ _s.packets_in = m_cnt;
+ _s.bytes_in = m_size;
+
+ err = (*handler_func)(ifp, m_head, m_tail, s, poll, current_thread());
+
+ if (ifp != lo_ifp) {
+ /* Release the IO refcnt */
+ ifnet_decr_iorefcnt(ifp);
+ }
+
+ return (err);
+}
+
+errno_t
+ifnet_set_input_handler(struct ifnet *ifp, ifnet_input_handler_func fn)
+{
+ return (atomic_test_set_ptr(&ifp->if_input_handler,
+ dlil_input_handler, fn) ? 0 : EBUSY);
+}
+
+void
+ifnet_reset_input_handler(struct ifnet *ifp)
+{
+ atomic_set_ptr(&ifp->if_input_handler, dlil_input_handler);
+}
+
+errno_t
+ifnet_set_output_handler(struct ifnet *ifp, ifnet_output_handler_func fn)
+{
+ return (atomic_test_set_ptr(&ifp->if_output_handler,
+ dlil_output_handler, fn) ? 0 : EBUSY);
+}
+
+void
+ifnet_reset_output_handler(struct ifnet *ifp)
+{
+ atomic_set_ptr(&ifp->if_output_handler, dlil_output_handler);
+}
+
+errno_t
+dlil_output_handler(struct ifnet *ifp, struct mbuf *m)
+{
+ return (ifp->if_output(ifp, m));
+}
+
+errno_t
+dlil_input_handler(struct ifnet *ifp, struct mbuf *m_head,
+ struct mbuf *m_tail, const struct ifnet_stat_increment_param *s,
+ boolean_t poll, struct thread *tp)
+{
+ struct dlil_threading_info *inp;
+ u_int32_t m_cnt = s->packets_in;
+ u_int32_t m_size = s->bytes_in;
+
+ if ((inp = ifp->if_inp) == NULL)
+ inp = dlil_main_input_thread;
+
+ /*
+ * If there is a matching DLIL input thread associated with an
+ * affinity set, associate this thread with the same set. We
+ * will only do this once.
+ */
+ lck_mtx_lock_spin(&inp->input_lck);
+ if (inp != dlil_main_input_thread && inp->net_affinity && tp != NULL &&
+ ((!poll && inp->wloop_thr == THREAD_NULL) ||
+ (poll && inp->poll_thr == THREAD_NULL))) {
+ u_int32_t tag = inp->tag;
+
+ if (poll) {
+ VERIFY(inp->poll_thr == THREAD_NULL);
+ inp->poll_thr = tp;
+ } else {
+ VERIFY(inp->wloop_thr == THREAD_NULL);
+ inp->wloop_thr = tp;
+ }
+ lck_mtx_unlock(&inp->input_lck);
+
+ /* Associate the current thread with the new affinity tag */
+ (void) dlil_affinity_set(tp, tag);
+
+ /*
+ * Take a reference on the current thread; during detach,
+ * we will need to refer to it in order ot tear down its
+ * affinity.
+ */
+ thread_reference(tp);
+ lck_mtx_lock_spin(&inp->input_lck);
+ }
+
+ VERIFY(m_head != NULL || (m_tail == NULL && m_cnt == 0));
+
+ /*
+ * Because of loopbacked multicast we cannot stuff the ifp in
+ * the rcvif of the packet header: loopback (lo0) packets use a
+ * dedicated list so that we can later associate them with lo_ifp
+ * on their way up the stack. Packets for other interfaces without
+ * dedicated input threads go to the regular list.
+ */
+ if (m_head != NULL) {
+ if (inp == dlil_main_input_thread && ifp == lo_ifp) {
+ struct dlil_main_threading_info *inpm =
+ (struct dlil_main_threading_info *)inp;
+ _addq_multi(&inpm->lo_rcvq_pkts, m_head, m_tail,
+ m_cnt, m_size);
+ } else {
+ _addq_multi(&inp->rcvq_pkts, m_head, m_tail,
+ m_cnt, m_size);
+ }
+ }
+
+#if IFNET_INPUT_SANITY_CHK
+ if (dlil_input_sanity_check != 0) {
+ u_int32_t count;
+ struct mbuf *m0;
+
+ for (m0 = m_head, count = 0; m0; m0 = mbuf_nextpkt(m0))
+ count++;
+
+ if (count != m_cnt) {
+ panic_plain("%s: invalid packet count %d "
+ "(expected %d)\n", if_name(ifp),
+ count, m_cnt);
+ /* NOTREACHED */
+ }
+
+ inp->input_mbuf_cnt += m_cnt;
+ }
+#endif /* IFNET_INPUT_SANITY_CHK */
+
+ dlil_input_stats_add(s, inp, poll);
+ /*
+ * If we're using the main input thread, synchronize the
+ * stats now since we have the interface context. All
+ * other cases involving dedicated input threads will
+ * have their stats synchronized there.
+ */
+ if (inp == dlil_main_input_thread)
+ dlil_input_stats_sync(ifp, inp);
+
+ inp->input_waiting |= DLIL_INPUT_WAITING;
+ if (!(inp->input_waiting & DLIL_INPUT_RUNNING)) {
+ inp->wtot++;
+ wakeup_one((caddr_t)&inp->input_waiting);
+ }
+ lck_mtx_unlock(&inp->input_lck);
+
+ return (0);
+}
+
+static void
+ifnet_start_common(struct ifnet *ifp, int resetfc)
+{
+ if (!(ifp->if_eflags & IFEF_TXSTART))
+ return;
+ /*
+ * If the starter thread is inactive, signal it to do work,
+ * unless the interface is being flow controlled from below,
+ * e.g. a virtual interface being flow controlled by a real
+ * network interface beneath it.
+ */
+ lck_mtx_lock_spin(&ifp->if_start_lock);
+ if (resetfc) {
+ ifp->if_start_flags &= ~IFSF_FLOW_CONTROLLED;
+ } else if (ifp->if_start_flags & IFSF_FLOW_CONTROLLED) {
+ lck_mtx_unlock(&ifp->if_start_lock);
+ return;
+ }
+ ifp->if_start_req++;
+ if (!ifp->if_start_active && ifp->if_start_thread != THREAD_NULL &&
+ (resetfc || !(ifp->if_eflags & IFEF_ENQUEUE_MULTI) ||
+ IFCQ_LEN(&ifp->if_snd) >= ifp->if_start_delay_qlen ||
+ ifp->if_start_delayed == 0)) {
+ wakeup_one((caddr_t)&ifp->if_start_thread);
+ }
+ lck_mtx_unlock(&ifp->if_start_lock);
+}
+
+void
+ifnet_start(struct ifnet *ifp)
+{
+ ifnet_start_common(ifp, 0);
+}
+
+static void
+ifnet_start_thread_fn(void *v, wait_result_t w)
+{
+#pragma unused(w)
+ struct ifnet *ifp = v;
+ char ifname[IFNAMSIZ + 1];
+ char thread_name[MAXTHREADNAMESIZE];
+ struct timespec *ts = NULL;
+ struct ifclassq *ifq = &ifp->if_snd;
+ struct timespec delay_start_ts;
+
+ /* Construct the name for this thread, and then apply it. */
+ bzero(thread_name, sizeof(thread_name));
+ snprintf(thread_name, sizeof(thread_name), "ifnet_start_%s", ifp->if_xname);
+ thread_set_thread_name(ifp->if_start_thread, thread_name);
+
+ /*
+ * Treat the dedicated starter thread for lo0 as equivalent to
+ * the driver workloop thread; if net_affinity is enabled for
+ * the main input thread, associate this starter thread to it
+ * by binding them with the same affinity tag. This is done
+ * only once (as we only have one lo_ifp which never goes away.)
+ */
+ if (ifp == lo_ifp) {
+ struct dlil_threading_info *inp = dlil_main_input_thread;
+ struct thread *tp = current_thread();
+
+ lck_mtx_lock(&inp->input_lck);
+ if (inp->net_affinity) {
+ u_int32_t tag = inp->tag;
+
+ VERIFY(inp->wloop_thr == THREAD_NULL);
+ VERIFY(inp->poll_thr == THREAD_NULL);
+ inp->wloop_thr = tp;
+ lck_mtx_unlock(&inp->input_lck);
+
+ /* Associate this thread with the affinity tag */
+ (void) dlil_affinity_set(tp, tag);
+ } else {
+ lck_mtx_unlock(&inp->input_lck);
+ }
+ }
+
+ snprintf(ifname, sizeof (ifname), "%s_starter",
+ if_name(ifp));
+
+ lck_mtx_lock_spin(&ifp->if_start_lock);
+
+ for (;;) {
+ if (ifp->if_start_thread != NULL)
+ (void) msleep(&ifp->if_start_thread,
+ &ifp->if_start_lock,
+ (PZERO - 1) | PSPIN, ifname, ts);
+
+ /* interface is detached? */
+ if (ifp->if_start_thread == THREAD_NULL) {
+ ifnet_set_start_cycle(ifp, NULL);
+ lck_mtx_unlock(&ifp->if_start_lock);
+ ifnet_purge(ifp);
+
+ if (dlil_verbose) {
+ printf("%s: starter thread terminated\n",
+ if_name(ifp));
+ }
+
+ /* for the extra refcnt from kernel_thread_start() */
+ thread_deallocate(current_thread());
+ /* this is the end */
+ thread_terminate(current_thread());
+ /* NOTREACHED */
+ return;
+ }
+
+ ifp->if_start_active = 1;
+
+ for (;;) {
+ u_int32_t req = ifp->if_start_req;
+ if (!IFCQ_IS_EMPTY(ifq) &&
+ (ifp->if_eflags & IFEF_ENQUEUE_MULTI) &&
+ ifp->if_start_delayed == 0 &&
+ IFCQ_LEN(ifq) < ifp->if_start_delay_qlen &&
+ (ifp->if_eflags & IFEF_DELAY_START)) {
+ ifp->if_start_delayed = 1;
+ ifnet_start_delayed++;
+ break;
+ } else {
+ ifp->if_start_delayed = 0;
+ }
+ lck_mtx_unlock(&ifp->if_start_lock);
+
+ /*
+ * If no longer attached, don't call start because ifp
+ * is being destroyed; else hold an IO refcnt to
+ * prevent the interface from being detached (will be
+ * released below.)
+ */
+ if (!ifnet_is_attached(ifp, 1)) {
+ lck_mtx_lock_spin(&ifp->if_start_lock);
+ break;
+ }
+
+ /* invoke the driver's start routine */
+ ((*ifp->if_start)(ifp));
+
+ /*
+ * Release the io ref count taken by ifnet_is_attached.
+ */
+ ifnet_decr_iorefcnt(ifp);
+
+ lck_mtx_lock_spin(&ifp->if_start_lock);
+
+ /* if there's no pending request, we're done */
+ if (req == ifp->if_start_req)
+ break;
+ }
+
+ ifp->if_start_req = 0;
+ ifp->if_start_active = 0;
+
+ /*
+ * Wakeup N ns from now if rate-controlled by TBR, and if
+ * there are still packets in the send queue which haven't
+ * been dequeued so far; else sleep indefinitely (ts = NULL)
+ * until ifnet_start() is called again.
+ */
+ ts = ((IFCQ_TBR_IS_ENABLED(ifq) && !IFCQ_IS_EMPTY(ifq)) ?
+ &ifp->if_start_cycle : NULL);
+
+ if (ts == NULL && ifp->if_start_delayed == 1) {
+ delay_start_ts.tv_sec = 0;
+ delay_start_ts.tv_nsec = ifp->if_start_delay_timeout;
+ ts = &delay_start_ts;
+ }
+
+ if (ts != NULL && ts->tv_sec == 0 && ts->tv_nsec == 0)
+ ts = NULL;
+ }
+
+ /* NOTREACHED */
+}
+
+void
+ifnet_set_start_cycle(struct ifnet *ifp, struct timespec *ts)
+{
+ if (ts == NULL)
+ bzero(&ifp->if_start_cycle, sizeof (ifp->if_start_cycle));
+ else
+ *(&ifp->if_start_cycle) = *ts;
+
+ if (ts != NULL && ts->tv_nsec != 0 && dlil_verbose)
+ printf("%s: restart interval set to %lu nsec\n",
+ if_name(ifp), ts->tv_nsec);
+}
+
+static void
+ifnet_poll(struct ifnet *ifp)
+{
+ /*
+ * If the poller thread is inactive, signal it to do work.
+ */
+ lck_mtx_lock_spin(&ifp->if_poll_lock);
+ ifp->if_poll_req++;
+ if (!ifp->if_poll_active && ifp->if_poll_thread != THREAD_NULL) {
+ wakeup_one((caddr_t)&ifp->if_poll_thread);
+ }
+ lck_mtx_unlock(&ifp->if_poll_lock);
+}
+
+static void
+ifnet_poll_thread_fn(void *v, wait_result_t w)
+{
+#pragma unused(w)
+ struct dlil_threading_info *inp;
+ struct ifnet *ifp = v;
+ char ifname[IFNAMSIZ + 1];
+ struct timespec *ts = NULL;
+ struct ifnet_stat_increment_param s;
+
+ snprintf(ifname, sizeof (ifname), "%s_poller",
+ if_name(ifp));
+ bzero(&s, sizeof (s));
+
+ lck_mtx_lock_spin(&ifp->if_poll_lock);
+
+ inp = ifp->if_inp;
+ VERIFY(inp != NULL);
+
+ for (;;) {
+ if (ifp->if_poll_thread != THREAD_NULL) {
+ (void) msleep(&ifp->if_poll_thread, &ifp->if_poll_lock,
+ (PZERO - 1) | PSPIN, ifname, ts);
+ }
+
+ /* interface is detached (maybe while asleep)? */
+ if (ifp->if_poll_thread == THREAD_NULL) {
+ ifnet_set_poll_cycle(ifp, NULL);
+ lck_mtx_unlock(&ifp->if_poll_lock);
+
+ if (dlil_verbose) {
+ printf("%s: poller thread terminated\n",
+ if_name(ifp));
+ }
+
+ /* for the extra refcnt from kernel_thread_start() */
+ thread_deallocate(current_thread());
+ /* this is the end */
+ thread_terminate(current_thread());
+ /* NOTREACHED */
+ return;
+ }
+
+ ifp->if_poll_active = 1;
+ for (;;) {
+ struct mbuf *m_head, *m_tail;
+ u_int32_t m_lim, m_cnt, m_totlen;
+ u_int16_t req = ifp->if_poll_req;
+
+ lck_mtx_unlock(&ifp->if_poll_lock);
+
+ /*
+ * If no longer attached, there's nothing to do;
+ * else hold an IO refcnt to prevent the interface
+ * from being detached (will be released below.)
+ */
+ if (!ifnet_is_attached(ifp, 1)) {
+ lck_mtx_lock_spin(&ifp->if_poll_lock);
+ break;
+ }
+
+ m_lim = (inp->rxpoll_plim != 0) ? inp->rxpoll_plim :
+ MAX((qlimit(&inp->rcvq_pkts)),
+ (inp->rxpoll_phiwat << 2));
+
+ if (dlil_verbose > 1) {
+ printf("%s: polling up to %d pkts, "
+ "pkts avg %d max %d, wreq avg %d, "
+ "bytes avg %d\n",
+ if_name(ifp), m_lim,
+ inp->rxpoll_pavg, inp->rxpoll_pmax,
+ inp->rxpoll_wavg, inp->rxpoll_bavg);
+ }
+
+ /* invoke the driver's input poll routine */
+ ((*ifp->if_input_poll)(ifp, 0, m_lim, &m_head, &m_tail,
+ &m_cnt, &m_totlen));
+
+ if (m_head != NULL) {
+ VERIFY(m_tail != NULL && m_cnt > 0);
+
+ if (dlil_verbose > 1) {
+ printf("%s: polled %d pkts, "
+ "pkts avg %d max %d, wreq avg %d, "
+ "bytes avg %d\n",
+ if_name(ifp), m_cnt,
+ inp->rxpoll_pavg, inp->rxpoll_pmax,
+ inp->rxpoll_wavg, inp->rxpoll_bavg);
+ }
+
+ /* stats are required for extended variant */
+ s.packets_in = m_cnt;
+ s.bytes_in = m_totlen;
+
+ (void) ifnet_input_common(ifp, m_head, m_tail,
+ &s, TRUE, TRUE);
+ } else {
+ if (dlil_verbose > 1) {
+ printf("%s: no packets, "
+ "pkts avg %d max %d, wreq avg %d, "
+ "bytes avg %d\n",
+ if_name(ifp), inp->rxpoll_pavg,
+ inp->rxpoll_pmax, inp->rxpoll_wavg,
+ inp->rxpoll_bavg);
+ }
+
+ (void) ifnet_input_common(ifp, NULL, NULL,
+ NULL, FALSE, TRUE);
+ }
+
+ /* Release the io ref count */
+ ifnet_decr_iorefcnt(ifp);
+
+ lck_mtx_lock_spin(&ifp->if_poll_lock);
+
+ /* if there's no pending request, we're done */
+ if (req == ifp->if_poll_req)
+ break;
+ }
+ ifp->if_poll_req = 0;
+ ifp->if_poll_active = 0;
+
+ /*
+ * Wakeup N ns from now, else sleep indefinitely (ts = NULL)
+ * until ifnet_poll() is called again.
+ */
+ ts = &ifp->if_poll_cycle;
+ if (ts->tv_sec == 0 && ts->tv_nsec == 0)
+ ts = NULL;
+ }
+
+ /* NOTREACHED */
+}
+
+void
+ifnet_set_poll_cycle(struct ifnet *ifp, struct timespec *ts)
+{
+ if (ts == NULL)
+ bzero(&ifp->if_poll_cycle, sizeof (ifp->if_poll_cycle));
+ else
+ *(&ifp->if_poll_cycle) = *ts;
+
+ if (ts != NULL && ts->tv_nsec != 0 && dlil_verbose)
+ printf("%s: poll interval set to %lu nsec\n",
+ if_name(ifp), ts->tv_nsec);
+}
+
+void
+ifnet_purge(struct ifnet *ifp)
+{
+ if (ifp != NULL && (ifp->if_eflags & IFEF_TXSTART))
+ if_qflush(ifp, 0);
+}
+
+void
+ifnet_update_sndq(struct ifclassq *ifq, cqev_t ev)
+{
+ IFCQ_LOCK_ASSERT_HELD(ifq);
+
+ if (!(IFCQ_IS_READY(ifq)))
+ return;
+
+ if (IFCQ_TBR_IS_ENABLED(ifq)) {
+ struct tb_profile tb = { ifq->ifcq_tbr.tbr_rate_raw,
+ ifq->ifcq_tbr.tbr_percent, 0 };
+ (void) ifclassq_tbr_set(ifq, &tb, FALSE);
+ }
+
+ ifclassq_update(ifq, ev);
+}
+
+void
+ifnet_update_rcv(struct ifnet *ifp, cqev_t ev)
+{
+ switch (ev) {
+ case CLASSQ_EV_LINK_BANDWIDTH:
+ if (net_rxpoll && (ifp->if_eflags & IFEF_RXPOLL))
+ ifp->if_poll_update++;
+ break;
+
+ default:
+ break;
+ }
+}
+
+errno_t
+ifnet_set_output_sched_model(struct ifnet *ifp, u_int32_t model)
+{
+ struct ifclassq *ifq;
+ u_int32_t omodel;
+ errno_t err;
+
+ if (ifp == NULL || model >= IFNET_SCHED_MODEL_MAX)
+ return (EINVAL);
+ else if (!(ifp->if_eflags & IFEF_TXSTART))
+ return (ENXIO);
+
+ ifq = &ifp->if_snd;
+ IFCQ_LOCK(ifq);
+ omodel = ifp->if_output_sched_model;
+ ifp->if_output_sched_model = model;
+ if ((err = ifclassq_pktsched_setup(ifq)) != 0)
+ ifp->if_output_sched_model = omodel;
+ IFCQ_UNLOCK(ifq);
+
+ return (err);
+}
+
+errno_t
+ifnet_set_sndq_maxlen(struct ifnet *ifp, u_int32_t maxqlen)
+{
+ if (ifp == NULL)
+ return (EINVAL);
+ else if (!(ifp->if_eflags & IFEF_TXSTART))
+ return (ENXIO);
+
+ ifclassq_set_maxlen(&ifp->if_snd, maxqlen);
+
+ return (0);
+}
+
+errno_t
+ifnet_get_sndq_maxlen(struct ifnet *ifp, u_int32_t *maxqlen)
+{
+ if (ifp == NULL || maxqlen == NULL)
+ return (EINVAL);
+ else if (!(ifp->if_eflags & IFEF_TXSTART))
+ return (ENXIO);
+
+ *maxqlen = ifclassq_get_maxlen(&ifp->if_snd);
+
+ return (0);
+}
+
+errno_t
+ifnet_get_sndq_len(struct ifnet *ifp, u_int32_t *pkts)
+{
+ errno_t err;
+
+ if (ifp == NULL || pkts == NULL)
+ err = EINVAL;
+ else if (!(ifp->if_eflags & IFEF_TXSTART))
+ err = ENXIO;
+ else
+ err = ifclassq_get_len(&ifp->if_snd, MBUF_SC_UNSPEC,
+ pkts, NULL);
+
+ return (err);
+}
+
+errno_t
+ifnet_get_service_class_sndq_len(struct ifnet *ifp, mbuf_svc_class_t sc,
+ u_int32_t *pkts, u_int32_t *bytes)
+{
+ errno_t err;
+
+ if (ifp == NULL || !MBUF_VALID_SC(sc) ||
+ (pkts == NULL && bytes == NULL))
+ err = EINVAL;
+ else if (!(ifp->if_eflags & IFEF_TXSTART))
+ err = ENXIO;
+ else
+ err = ifclassq_get_len(&ifp->if_snd, sc, pkts, bytes);
+
+ return (err);
+}
+
+errno_t
+ifnet_set_rcvq_maxlen(struct ifnet *ifp, u_int32_t maxqlen)
+{
+ struct dlil_threading_info *inp;
+
+ if (ifp == NULL)
+ return (EINVAL);
+ else if (!(ifp->if_eflags & IFEF_RXPOLL) || ifp->if_inp == NULL)
+ return (ENXIO);
+
+ if (maxqlen == 0)
+ maxqlen = if_rcvq_maxlen;
+ else if (maxqlen < IF_RCVQ_MINLEN)
+ maxqlen = IF_RCVQ_MINLEN;
+
+ inp = ifp->if_inp;
+ lck_mtx_lock(&inp->input_lck);
+ qlimit(&inp->rcvq_pkts) = maxqlen;
+ lck_mtx_unlock(&inp->input_lck);
+
+ return (0);
+}
+
+errno_t
+ifnet_get_rcvq_maxlen(struct ifnet *ifp, u_int32_t *maxqlen)
+{
+ struct dlil_threading_info *inp;
+
+ if (ifp == NULL || maxqlen == NULL)
+ return (EINVAL);
+ else if (!(ifp->if_eflags & IFEF_RXPOLL) || ifp->if_inp == NULL)
+ return (ENXIO);
+
+ inp = ifp->if_inp;
+ lck_mtx_lock(&inp->input_lck);
+ *maxqlen = qlimit(&inp->rcvq_pkts);
+ lck_mtx_unlock(&inp->input_lck);
+ return (0);
+}
+
+errno_t
+ifnet_enqueue(struct ifnet *ifp, struct mbuf *m)
+{
+ int error;
+ struct timespec now;
+ u_int64_t now_nsec;
+
+ if (ifp == NULL || m == NULL || !(m->m_flags & M_PKTHDR) ||
+ m->m_nextpkt != NULL) {
+ if (m != NULL)
+ m_freem_list(m);
+ return (EINVAL);
+ } else if (!(ifp->if_eflags & IFEF_TXSTART) ||
+ !(ifp->if_refflags & IFRF_ATTACHED)) {
+ /* flag tested without lock for performance */
+ m_freem(m);
+ return (ENXIO);
+ } else if (!(ifp->if_flags & IFF_UP)) {
+ m_freem(m);
+ return (ENETDOWN);
+ }
+
+ nanouptime(&now);
+ net_timernsec(&now, &now_nsec);
+ m->m_pkthdr.pkt_timestamp = now_nsec;
+ m->m_pkthdr.pkt_flags &= ~PKTF_DRV_TS_VALID;
+
+ if (ifp->if_eflags & IFEF_ENQUEUE_MULTI) {
+ /*
+ * If the driver chose to delay start callback for
+ * coalescing multiple packets, Then use the following
+ * heuristics to make sure that start callback will
+ * be delayed only when bulk data transfer is detected.
+ * 1. number of packets enqueued in (delay_win * 2) is
+ * greater than or equal to the delay qlen.
+ * 2. If delay_start is enabled it will stay enabled for
+ * another 10 idle windows. This is to take into account
+ * variable RTT and burst traffic.
+ * 3. If the time elapsed since last enqueue is more
+ * than 200ms we disable delaying start callback. This is
+ * is to take idle time into account.
+ */
+ u_int64_t dwin = (ifp->if_start_delay_timeout << 1);
+ if (ifp->if_start_delay_swin > 0) {
+ if ((ifp->if_start_delay_swin + dwin) > now_nsec) {
+ ifp->if_start_delay_cnt++;
+ } else if ((now_nsec - ifp->if_start_delay_swin)
+ >= (200 * 1000 * 1000)) {
+ ifp->if_start_delay_swin = now_nsec;
+ ifp->if_start_delay_cnt = 1;
+ ifp->if_start_delay_idle = 0;
+ if (ifp->if_eflags & IFEF_DELAY_START) {
+ ifp->if_eflags &=
+ ~(IFEF_DELAY_START);
+ ifnet_delay_start_disabled++;
+ }
+ } else {
+ if (ifp->if_start_delay_cnt >=
+ ifp->if_start_delay_qlen) {
+ ifp->if_eflags |= IFEF_DELAY_START;
+ ifp->if_start_delay_idle = 0;
+ } else {
+ if (ifp->if_start_delay_idle >= 10) {
+ ifp->if_eflags &= ~(IFEF_DELAY_START);
+ ifnet_delay_start_disabled++;
+ } else {
+ ifp->if_start_delay_idle++;
+ }
+ }
+ ifp->if_start_delay_swin = now_nsec;
+ ifp->if_start_delay_cnt = 1;
+ }
+ } else {
+ ifp->if_start_delay_swin = now_nsec;
+ ifp->if_start_delay_cnt = 1;
+ ifp->if_start_delay_idle = 0;
+ ifp->if_eflags &= ~(IFEF_DELAY_START);
+ }
+ } else {
+ ifp->if_eflags &= ~(IFEF_DELAY_START);
+ }
+
+ /* enqueue the packet */
+ error = ifclassq_enqueue(&ifp->if_snd, m);
+
+ /*
+ * Tell the driver to start dequeueing; do this even when the queue
+ * for the packet is suspended (EQSUSPENDED), as the driver could still
+ * be dequeueing from other unsuspended queues.
+ */
+ if (!(ifp->if_eflags & IFEF_ENQUEUE_MULTI) &&
+ (error == 0 || error == EQFULL || error == EQSUSPENDED))
+ ifnet_start(ifp);
+
+ return (error);
+}
+
+errno_t
+ifnet_dequeue(struct ifnet *ifp, struct mbuf **mp)
+{
+ errno_t rc;
+ if (ifp == NULL || mp == NULL)
+ return (EINVAL);
+ else if (!(ifp->if_eflags & IFEF_TXSTART) ||
+ ifp->if_output_sched_model >= IFNET_SCHED_MODEL_MAX)
+ return (ENXIO);
+ if (!ifnet_is_attached(ifp, 1))
+ return (ENXIO);
+ rc = ifclassq_dequeue(&ifp->if_snd, 1, CLASSQ_DEQUEUE_MAX_BYTE_LIMIT,
+ mp, NULL, NULL, NULL);
+ ifnet_decr_iorefcnt(ifp);
+
+ return (rc);
+}
+
+errno_t
+ifnet_dequeue_service_class(struct ifnet *ifp, mbuf_svc_class_t sc,
+ struct mbuf **mp)
+{
+ errno_t rc;
+ if (ifp == NULL || mp == NULL || !MBUF_VALID_SC(sc))
+ return (EINVAL);
+ else if (!(ifp->if_eflags & IFEF_TXSTART) ||
+ ifp->if_output_sched_model >= IFNET_SCHED_MODEL_MAX)
+ return (ENXIO);
+ if (!ifnet_is_attached(ifp, 1))
+ return (ENXIO);
+
+ rc = ifclassq_dequeue_sc(&ifp->if_snd, sc, 1, mp, NULL, NULL, NULL);
+ ifnet_decr_iorefcnt(ifp);
+ return (rc);
+}
+
+errno_t
+ifnet_dequeue_multi(struct ifnet *ifp, u_int32_t pkt_limit,
+ struct mbuf **head, struct mbuf **tail, u_int32_t *cnt, u_int32_t *len)
+{
+ errno_t rc;
+ if (ifp == NULL || head == NULL || pkt_limit < 1)
+ return (EINVAL);
+ else if (!(ifp->if_eflags & IFEF_TXSTART) ||
+ ifp->if_output_sched_model >= IFNET_SCHED_MODEL_MAX)
+ return (ENXIO);
+ if (!ifnet_is_attached(ifp, 1))
+ return (ENXIO);
+
+ rc = ifclassq_dequeue(&ifp->if_snd, pkt_limit,
+ CLASSQ_DEQUEUE_MAX_BYTE_LIMIT, head, tail, cnt, len);
+ ifnet_decr_iorefcnt(ifp);
+ return (rc);
+}
+
+errno_t
+ifnet_dequeue_multi_bytes(struct ifnet *ifp, u_int32_t byte_limit,
+ struct mbuf **head, struct mbuf **tail, u_int32_t *cnt, u_int32_t *len)
+{
+ errno_t rc;
+ if (ifp == NULL || head == NULL || byte_limit < 1)
+ return (EINVAL);
+ else if (!(ifp->if_eflags & IFEF_TXSTART) ||
+ ifp->if_output_sched_model >= IFNET_SCHED_MODEL_MAX)
+ return (ENXIO);
+ if (!ifnet_is_attached(ifp, 1))
+ return (ENXIO);
+
+ rc = ifclassq_dequeue(&ifp->if_snd, CLASSQ_DEQUEUE_MAX_PKT_LIMIT,
+ byte_limit, head, tail, cnt, len);
+ ifnet_decr_iorefcnt(ifp);
+ return (rc);
+}
+
+errno_t
+ifnet_dequeue_service_class_multi(struct ifnet *ifp, mbuf_svc_class_t sc,
+ u_int32_t pkt_limit, struct mbuf **head, struct mbuf **tail, u_int32_t *cnt,
+ u_int32_t *len)
+{
+ errno_t rc;
+ if (ifp == NULL || head == NULL || pkt_limit < 1 ||
+ !MBUF_VALID_SC(sc))
+ return (EINVAL);
+ else if (!(ifp->if_eflags & IFEF_TXSTART) ||
+ ifp->if_output_sched_model >= IFNET_SCHED_MODEL_MAX)
+ return (ENXIO);
+ if (!ifnet_is_attached(ifp, 1))
+ return (ENXIO);
+ rc = ifclassq_dequeue_sc(&ifp->if_snd, sc, pkt_limit, head,
+ tail, cnt, len);
+ ifnet_decr_iorefcnt(ifp);
+ return (rc);
+}
+
+errno_t
+ifnet_framer_stub(struct ifnet *ifp, struct mbuf **m,
+ const struct sockaddr *dest, const char *dest_linkaddr,
+ const char *frame_type, u_int32_t *pre, u_int32_t *post)
+{
+ if (pre != NULL)
+ *pre = 0;
+ if (post != NULL)
+ *post = 0;
+
+ return (ifp->if_framer_legacy(ifp, m, dest, dest_linkaddr, frame_type));
+}
+
+static int
+dlil_interface_filters_input(struct ifnet *ifp, struct mbuf **m_p,
+ char **frame_header_p, protocol_family_t protocol_family)
+{
+ struct ifnet_filter *filter;
+
+ /*
+ * Pass the inbound packet to the interface filters
+ */
+ lck_mtx_lock_spin(&ifp->if_flt_lock);
+ /* prevent filter list from changing in case we drop the lock */
+ if_flt_monitor_busy(ifp);
+ TAILQ_FOREACH(filter, &ifp->if_flt_head, filt_next) {
+ int result;
+
+ if (!filter->filt_skip && filter->filt_input != NULL &&
+ (filter->filt_protocol == 0 ||
+ filter->filt_protocol == protocol_family)) {
+ lck_mtx_unlock(&ifp->if_flt_lock);
+
+ result = (*filter->filt_input)(filter->filt_cookie,
+ ifp, protocol_family, m_p, frame_header_p);
+
+ lck_mtx_lock_spin(&ifp->if_flt_lock);
+ if (result != 0) {
+ /* we're done with the filter list */
+ if_flt_monitor_unbusy(ifp);
+ lck_mtx_unlock(&ifp->if_flt_lock);
+ return (result);
+ }
+ }
+ }
+ /* we're done with the filter list */
+ if_flt_monitor_unbusy(ifp);
+ lck_mtx_unlock(&ifp->if_flt_lock);
+
+ /*
+ * Strip away M_PROTO1 bit prior to sending packet up the stack as
+ * it is meant to be local to a subsystem -- if_bridge for M_PROTO1
+ */
+ if (*m_p != NULL)
+ (*m_p)->m_flags &= ~M_PROTO1;
+
+ return (0);
+}
+
+static int
+dlil_interface_filters_output(struct ifnet *ifp, struct mbuf **m_p,
+ protocol_family_t protocol_family)
+{
+ struct ifnet_filter *filter;
+
+ /*
+ * Pass the outbound packet to the interface filters
+ */
+ lck_mtx_lock_spin(&ifp->if_flt_lock);
+ /* prevent filter list from changing in case we drop the lock */
+ if_flt_monitor_busy(ifp);
+ TAILQ_FOREACH(filter, &ifp->if_flt_head, filt_next) {
+ int result;
+
+ if (!filter->filt_skip && filter->filt_output != NULL &&
+ (filter->filt_protocol == 0 ||
+ filter->filt_protocol == protocol_family)) {
+ lck_mtx_unlock(&ifp->if_flt_lock);
+
+ result = filter->filt_output(filter->filt_cookie, ifp,
+ protocol_family, m_p);
+
+ lck_mtx_lock_spin(&ifp->if_flt_lock);
+ if (result != 0) {
+ /* we're done with the filter list */
+ if_flt_monitor_unbusy(ifp);
+ lck_mtx_unlock(&ifp->if_flt_lock);
+ return (result);
+ }
+ }
+ }
+ /* we're done with the filter list */
+ if_flt_monitor_unbusy(ifp);
+ lck_mtx_unlock(&ifp->if_flt_lock);
+
+ return (0);
+}
+
+static void
+dlil_ifproto_input(struct if_proto * ifproto, mbuf_t m)
+{
+ int error;
+
+ if (ifproto->proto_kpi == kProtoKPI_v1) {
+ /* Version 1 protocols get one packet at a time */
+ while (m != NULL) {
+ char * frame_header;
+ mbuf_t next_packet;
+
+ next_packet = m->m_nextpkt;
+ m->m_nextpkt = NULL;
+ frame_header = m->m_pkthdr.pkt_hdr;
+ m->m_pkthdr.pkt_hdr = NULL;
+ error = (*ifproto->kpi.v1.input)(ifproto->ifp,
+ ifproto->protocol_family, m, frame_header);
+ if (error != 0 && error != EJUSTRETURN)
+ m_freem(m);
+ m = next_packet;
+ }
+ } else if (ifproto->proto_kpi == kProtoKPI_v2) {
+ /* Version 2 protocols support packet lists */
+ error = (*ifproto->kpi.v2.input)(ifproto->ifp,
+ ifproto->protocol_family, m);
+ if (error != 0 && error != EJUSTRETURN)
+ m_freem_list(m);
+ }
+}
+
+static void
+dlil_input_stats_add(const struct ifnet_stat_increment_param *s,
+ struct dlil_threading_info *inp, boolean_t poll)
+{
+ struct ifnet_stat_increment_param *d = &inp->stats;
+
+ if (s->packets_in != 0)
+ d->packets_in += s->packets_in;
+ if (s->bytes_in != 0)
+ d->bytes_in += s->bytes_in;
+ if (s->errors_in != 0)
+ d->errors_in += s->errors_in;
+
+ if (s->packets_out != 0)
+ d->packets_out += s->packets_out;
+ if (s->bytes_out != 0)
+ d->bytes_out += s->bytes_out;
+ if (s->errors_out != 0)
+ d->errors_out += s->errors_out;
+
+ if (s->collisions != 0)
+ d->collisions += s->collisions;
+ if (s->dropped != 0)
+ d->dropped += s->dropped;
+
+ if (poll)
+ PKTCNTR_ADD(&inp->tstats, s->packets_in, s->bytes_in);
+}
+
+static void
+dlil_input_stats_sync(struct ifnet *ifp, struct dlil_threading_info *inp)
+{
+ struct ifnet_stat_increment_param *s = &inp->stats;
+
+ /*
+ * Use of atomic operations is unavoidable here because
+ * these stats may also be incremented elsewhere via KPIs.
+ */
+ if (s->packets_in != 0) {
+ atomic_add_64(&ifp->if_data.ifi_ipackets, s->packets_in);
+ s->packets_in = 0;
+ }
+ if (s->bytes_in != 0) {
+ atomic_add_64(&ifp->if_data.ifi_ibytes, s->bytes_in);
+ s->bytes_in = 0;
+ }
+ if (s->errors_in != 0) {
+ atomic_add_64(&ifp->if_data.ifi_ierrors, s->errors_in);
+ s->errors_in = 0;
+ }
+
+ if (s->packets_out != 0) {
+ atomic_add_64(&ifp->if_data.ifi_opackets, s->packets_out);
+ s->packets_out = 0;
+ }
+ if (s->bytes_out != 0) {
+ atomic_add_64(&ifp->if_data.ifi_obytes, s->bytes_out);
+ s->bytes_out = 0;
+ }
+ if (s->errors_out != 0) {
+ atomic_add_64(&ifp->if_data.ifi_oerrors, s->errors_out);
+ s->errors_out = 0;
+ }
+
+ if (s->collisions != 0) {
+ atomic_add_64(&ifp->if_data.ifi_collisions, s->collisions);
+ s->collisions = 0;
+ }
+ if (s->dropped != 0) {
+ atomic_add_64(&ifp->if_data.ifi_iqdrops, s->dropped);
+ s->dropped = 0;
+ }
+ /*
+ * If we went over the threshold, notify NetworkStatistics.
+ */
+ if (ifp->if_data_threshold &&
+ (ifp->if_ibytes + ifp->if_obytes) - ifp->if_dt_bytes >
+ ifp->if_data_threshold) {
+ ifp->if_dt_bytes = ifp->if_ibytes + ifp->if_obytes;
+
+ lck_mtx_convert_spin(&inp->input_lck);
+ nstat_ifnet_threshold_reached(ifp->if_index);
+ }
+ /*
+ * No need for atomic operations as they are modified here
+ * only from within the DLIL input thread context.
+ */
+ if (inp->tstats.packets != 0) {
+ inp->pstats.ifi_poll_packets += inp->tstats.packets;
+ inp->tstats.packets = 0;
+ }
+ if (inp->tstats.bytes != 0) {
+ inp->pstats.ifi_poll_bytes += inp->tstats.bytes;
+ inp->tstats.bytes = 0;
+ }
+}
+
+__private_extern__ void
+dlil_input_packet_list(struct ifnet *ifp, struct mbuf *m)
+{
+ return (dlil_input_packet_list_common(ifp, m, 0,
+ IFNET_MODEL_INPUT_POLL_OFF, FALSE));
+}
+
+__private_extern__ void
+dlil_input_packet_list_extended(struct ifnet *ifp, struct mbuf *m,
+ u_int32_t cnt, ifnet_model_t mode)
+{
+ return (dlil_input_packet_list_common(ifp, m, cnt, mode, TRUE));
+}
+
+static void
+dlil_input_packet_list_common(struct ifnet *ifp_param, struct mbuf *m,
+ u_int32_t cnt, ifnet_model_t mode, boolean_t ext)
+{
+ int error = 0;
+ protocol_family_t protocol_family;
+ mbuf_t next_packet;
+ ifnet_t ifp = ifp_param;
+ char * frame_header;
+ struct if_proto * last_ifproto = NULL;
+ mbuf_t pkt_first = NULL;
+ mbuf_t * pkt_next = NULL;
+ u_int32_t poll_thresh = 0, poll_ival = 0;
+
+ KERNEL_DEBUG(DBG_FNC_DLIL_INPUT | DBG_FUNC_START, 0, 0, 0, 0, 0);
+
+ if (ext && mode == IFNET_MODEL_INPUT_POLL_ON && cnt > 1 &&
+ (poll_ival = if_rxpoll_interval_pkts) > 0)
+ poll_thresh = cnt;
+
+ while (m != NULL) {
+ struct if_proto *ifproto = NULL;
+ int iorefcnt = 0;
+ uint32_t pktf_mask; /* pkt flags to preserve */
+
+ if (ifp_param == NULL)
+ ifp = m->m_pkthdr.rcvif;
+
+ if ((ifp->if_eflags & IFEF_RXPOLL) && poll_thresh != 0 &&
+ poll_ival > 0 && (--poll_thresh % poll_ival) == 0)
+ ifnet_poll(ifp);
+
+ /* Check if this mbuf looks valid */
+ MBUF_INPUT_CHECK(m, ifp);
+
+ next_packet = m->m_nextpkt;
+ m->m_nextpkt = NULL;
+ frame_header = m->m_pkthdr.pkt_hdr;
+ m->m_pkthdr.pkt_hdr = NULL;
+
+ /*
+ * Get an IO reference count if the interface is not
+ * loopback (lo0) and it is attached; lo0 never goes
+ * away, so optimize for that.
+ */
+ if (ifp != lo_ifp) {
+ if (!ifnet_is_attached(ifp, 1)) {
+ m_freem(m);
+ goto next;
+ }
+ iorefcnt = 1;
+ pktf_mask = 0;
+ } else {
+ /*
+ * If this arrived on lo0, preserve interface addr
+ * info to allow for connectivity between loopback
+ * and local interface addresses.
+ */
+ pktf_mask = (PKTF_LOOP|PKTF_IFAINFO);
+ }
+
+ /* make sure packet comes in clean */
+ m_classifier_init(m, pktf_mask);
+
+ ifp_inc_traffic_class_in(ifp, m);
+
+ /* find which protocol family this packet is for */
+ ifnet_lock_shared(ifp);
+ error = (*ifp->if_demux)(ifp, m, frame_header,
+ &protocol_family);
+ ifnet_lock_done(ifp);
+ if (error != 0) {
+ if (error == EJUSTRETURN)
+ goto next;
+ protocol_family = 0;
+ }
+
+ if (hwcksum_dbg != 0 && !(ifp->if_flags & IFF_LOOPBACK) &&
+ !(m->m_pkthdr.pkt_flags & PKTF_LOOP))
+ dlil_input_cksum_dbg(ifp, m, frame_header,
+ protocol_family);
+
+ /*
+ * For partial checksum offload, we expect the driver to
+ * set the start offset indicating the start of the span
+ * that is covered by the hardware-computed checksum;
+ * adjust this start offset accordingly because the data
+ * pointer has been advanced beyond the link-layer header.
+ *
+ * Don't adjust if the interface is a bridge member, as
+ * the adjustment will occur from the context of the
+ * bridge interface during input.
+ */
+ if (ifp->if_bridge == NULL && (m->m_pkthdr.csum_flags &
+ (CSUM_DATA_VALID | CSUM_PARTIAL)) ==
+ (CSUM_DATA_VALID | CSUM_PARTIAL)) {
+ int adj;
+
+ if (frame_header == NULL ||
+ frame_header < (char *)mbuf_datastart(m) ||
+ frame_header > (char *)m->m_data ||
+ (adj = (m->m_data - frame_header)) >
+ m->m_pkthdr.csum_rx_start) {
+ m->m_pkthdr.csum_data = 0;
+ m->m_pkthdr.csum_flags &= ~CSUM_DATA_VALID;
+ hwcksum_in_invalidated++;
+ } else {
+ m->m_pkthdr.csum_rx_start -= adj;
+ }
+ }
+
+ pktap_input(ifp, protocol_family, m, frame_header);
+
+ if (m->m_flags & (M_BCAST|M_MCAST))
+ atomic_add_64(&ifp->if_imcasts, 1);
+
+ /* run interface filters, exclude VLAN packets PR-3586856 */
+ if ((m->m_pkthdr.csum_flags & CSUM_VLAN_TAG_VALID) == 0) {
+ error = dlil_interface_filters_input(ifp, &m,
+ &frame_header, protocol_family);
+ if (error != 0) {
+ if (error != EJUSTRETURN)
+ m_freem(m);
+ goto next;
+ }
+ }
+ if (error != 0 || ((m->m_flags & M_PROMISC) != 0)) {
+ m_freem(m);
+ goto next;
+ }
+
+ /* Lookup the protocol attachment to this interface */
+ if (protocol_family == 0) {
+ ifproto = NULL;
+ } else if (last_ifproto != NULL && last_ifproto->ifp == ifp &&
+ (last_ifproto->protocol_family == protocol_family)) {
+ VERIFY(ifproto == NULL);
+ ifproto = last_ifproto;
+ if_proto_ref(last_ifproto);
+ } else {
+ VERIFY(ifproto == NULL);
+ ifnet_lock_shared(ifp);
+ /* callee holds a proto refcnt upon success */
+ ifproto = find_attached_proto(ifp, protocol_family);
+ ifnet_lock_done(ifp);
+ }
+ if (ifproto == NULL) {
+ /* no protocol for this packet, discard */
+ m_freem(m);
+ goto next;
+ }
+ if (ifproto != last_ifproto) {
+ if (last_ifproto != NULL) {
+ /* pass up the list for the previous protocol */
+ dlil_ifproto_input(last_ifproto, pkt_first);
+ pkt_first = NULL;
+ if_proto_free(last_ifproto);
+ }
+ last_ifproto = ifproto;
+ if_proto_ref(ifproto);
+ }
+ /* extend the list */
+ m->m_pkthdr.pkt_hdr = frame_header;
+ if (pkt_first == NULL) {
+ pkt_first = m;
+ } else {
+ *pkt_next = m;
+ }
+ pkt_next = &m->m_nextpkt;
+
+next:
+ if (next_packet == NULL && last_ifproto != NULL) {
+ /* pass up the last list of packets */
+ dlil_ifproto_input(last_ifproto, pkt_first);
+ if_proto_free(last_ifproto);
+ last_ifproto = NULL;
+ }
+ if (ifproto != NULL) {
+ if_proto_free(ifproto);
+ ifproto = NULL;
+ }
+
+ m = next_packet;
+
+ /* update the driver's multicast filter, if needed */
+ if (ifp->if_updatemcasts > 0 && if_mcasts_update(ifp) == 0)
+ ifp->if_updatemcasts = 0;
+ if (iorefcnt == 1)
+ ifnet_decr_iorefcnt(ifp);
+ }
+
+ KERNEL_DEBUG(DBG_FNC_DLIL_INPUT | DBG_FUNC_END, 0, 0, 0, 0, 0);
+}
+
+errno_t
+if_mcasts_update(struct ifnet *ifp)
+{
+ errno_t err;
+
+ err = ifnet_ioctl(ifp, 0, SIOCADDMULTI, NULL);
+ if (err == EAFNOSUPPORT)
+ err = 0;
+ printf("%s: %s %d suspended link-layer multicast membership(s) "
+ "(err=%d)\n", if_name(ifp),
+ (err == 0 ? "successfully restored" : "failed to restore"),
+ ifp->if_updatemcasts, err);
+
+ /* just return success */
+ return (0);
+}
+
+/* If ifp is set, we will increment the generation for the interface */
+int
+dlil_post_complete_msg(struct ifnet *ifp, struct kev_msg *event)
+{
+ if (ifp != NULL) {
+ ifnet_increment_generation(ifp);
+ }
+
+#if NECP
+ necp_update_all_clients();
+#endif /* NECP */
+
+ return (kev_post_msg(event));
+}
+
+#define TMP_IF_PROTO_ARR_SIZE 10
+static int
+dlil_event_internal(struct ifnet *ifp, struct kev_msg *event, bool update_generation)
+{
+ struct ifnet_filter *filter = NULL;
+ struct if_proto *proto = NULL;
+ int if_proto_count = 0;
+ struct if_proto **tmp_ifproto_arr = NULL;
+ struct if_proto *tmp_ifproto_stack_arr[TMP_IF_PROTO_ARR_SIZE] = {NULL};
+ int tmp_ifproto_arr_idx = 0;
+ bool tmp_malloc = false;
+
+ /*
+ * Pass the event to the interface filters
+ */
+ lck_mtx_lock_spin(&ifp->if_flt_lock);
+ /* prevent filter list from changing in case we drop the lock */
+ if_flt_monitor_busy(ifp);
+ TAILQ_FOREACH(filter, &ifp->if_flt_head, filt_next) {
+ if (filter->filt_event != NULL) {
+ lck_mtx_unlock(&ifp->if_flt_lock);
+
+ filter->filt_event(filter->filt_cookie, ifp,
+ filter->filt_protocol, event);
+
+ lck_mtx_lock_spin(&ifp->if_flt_lock);
+ }
+ }
+ /* we're done with the filter list */
+ if_flt_monitor_unbusy(ifp);
+ lck_mtx_unlock(&ifp->if_flt_lock);
+
+ /* Get an io ref count if the interface is attached */
+ if (!ifnet_is_attached(ifp, 1))
+ goto done;
+
+ /*
+ * An embedded tmp_list_entry in if_proto may still get
+ * over-written by another thread after giving up ifnet lock,
+ * therefore we are avoiding embedded pointers here.
+ */
+ ifnet_lock_shared(ifp);
+ if_proto_count = dlil_ifp_proto_count(ifp);
+ if (if_proto_count) {
+ int i;
+ VERIFY(ifp->if_proto_hash != NULL);
+ if (if_proto_count <= TMP_IF_PROTO_ARR_SIZE) {
+ tmp_ifproto_arr = tmp_ifproto_stack_arr;
+ } else {
+ MALLOC(tmp_ifproto_arr, struct if_proto **,
+ sizeof (*tmp_ifproto_arr) * if_proto_count,
+ M_TEMP, M_ZERO);
+ if (tmp_ifproto_arr == NULL) {
+ ifnet_lock_done(ifp);
+ goto cleanup;
+ }
+ tmp_malloc = true;
+ }
+
+ for (i = 0; i < PROTO_HASH_SLOTS; i++) {
+ SLIST_FOREACH(proto, &ifp->if_proto_hash[i],
+ next_hash) {
+ if_proto_ref(proto);
+ tmp_ifproto_arr[tmp_ifproto_arr_idx] = proto;
+ tmp_ifproto_arr_idx++;
+ }
+ }
+ VERIFY(if_proto_count == tmp_ifproto_arr_idx);
+ }
+ ifnet_lock_done(ifp);
+
+ for (tmp_ifproto_arr_idx = 0; tmp_ifproto_arr_idx < if_proto_count;
+ tmp_ifproto_arr_idx++) {
+ proto = tmp_ifproto_arr[tmp_ifproto_arr_idx];
+ VERIFY(proto != NULL);
+ proto_media_event eventp =
+ (proto->proto_kpi == kProtoKPI_v1 ?
+ proto->kpi.v1.event :
+ proto->kpi.v2.event);
+
+ if (eventp != NULL) {
+ eventp(ifp, proto->protocol_family,
+ event);
+ }
+ if_proto_free(proto);
+ }
+
+cleanup:
+ if (tmp_malloc) {
+ FREE(tmp_ifproto_arr, M_TEMP);
+ }
+
+ /* Pass the event to the interface */
+ if (ifp->if_event != NULL)
+ ifp->if_event(ifp, event);
+
+ /* Release the io ref count */
+ ifnet_decr_iorefcnt(ifp);
+done:
+ return (dlil_post_complete_msg(update_generation ? ifp : NULL, event));
+}
+
+errno_t
+ifnet_event(ifnet_t ifp, struct kern_event_msg *event)
+{
+ struct kev_msg kev_msg;
+ int result = 0;
+
+ if (ifp == NULL || event == NULL)
+ return (EINVAL);
+
+ bzero(&kev_msg, sizeof (kev_msg));
+ kev_msg.vendor_code = event->vendor_code;
+ kev_msg.kev_class = event->kev_class;
+ kev_msg.kev_subclass = event->kev_subclass;
+ kev_msg.event_code = event->event_code;
+ kev_msg.dv[0].data_ptr = &event->event_data[0];
+ kev_msg.dv[0].data_length = event->total_size - KEV_MSG_HEADER_SIZE;
+ kev_msg.dv[1].data_length = 0;
+
+ result = dlil_event_internal(ifp, &kev_msg, TRUE);
+
+ return (result);
+}
+
+#if CONFIG_MACF_NET
+#include <netinet/ip6.h>
+#include <netinet/ip.h>
+static int
+dlil_get_socket_type(struct mbuf **mp, int family, int raw)
+{
+ struct mbuf *m;
+ struct ip *ip;
+ struct ip6_hdr *ip6;
+ int type = SOCK_RAW;
+
+ if (!raw) {
+ switch (family) {
+ case PF_INET:
+ m = m_pullup(*mp, sizeof(struct ip));
+ if (m == NULL)
+ break;
+ *mp = m;
+ ip = mtod(m, struct ip *);
+ if (ip->ip_p == IPPROTO_TCP)
+ type = SOCK_STREAM;
+ else if (ip->ip_p == IPPROTO_UDP)
+ type = SOCK_DGRAM;
+ break;
+ case PF_INET6:
+ m = m_pullup(*mp, sizeof(struct ip6_hdr));
+ if (m == NULL)
+ break;
+ *mp = m;
+ ip6 = mtod(m, struct ip6_hdr *);
+ if (ip6->ip6_nxt == IPPROTO_TCP)
+ type = SOCK_STREAM;
+ else if (ip6->ip6_nxt == IPPROTO_UDP)
+ type = SOCK_DGRAM;
+ break;
+ }
+ }
+
+ return (type);
+}
+#endif
+
+/*
+ * This is mostly called from the context of the DLIL input thread;
+ * because of that there is no need for atomic operations.
+ */
+static __inline void
+ifp_inc_traffic_class_in(struct ifnet *ifp, struct mbuf *m)
+{
+ if (!(m->m_flags & M_PKTHDR))
+ return;
+
+ switch (m_get_traffic_class(m)) {
+ case MBUF_TC_BE:
+ ifp->if_tc.ifi_ibepackets++;
+ ifp->if_tc.ifi_ibebytes += m->m_pkthdr.len;
+ break;
+ case MBUF_TC_BK:
+ ifp->if_tc.ifi_ibkpackets++;
+ ifp->if_tc.ifi_ibkbytes += m->m_pkthdr.len;
+ break;
+ case MBUF_TC_VI:
+ ifp->if_tc.ifi_ivipackets++;
+ ifp->if_tc.ifi_ivibytes += m->m_pkthdr.len;
+ break;
+ case MBUF_TC_VO:
+ ifp->if_tc.ifi_ivopackets++;
+ ifp->if_tc.ifi_ivobytes += m->m_pkthdr.len;
+ break;
+ default:
+ break;
+ }
+
+ if (mbuf_is_traffic_class_privileged(m)) {
+ ifp->if_tc.ifi_ipvpackets++;
+ ifp->if_tc.ifi_ipvbytes += m->m_pkthdr.len;
+ }
+}
+
+/*
+ * This is called from DLIL output, hence multiple threads could end
+ * up modifying the statistics. We trade off acccuracy for performance
+ * by not using atomic operations here.
+ */
+static __inline void
+ifp_inc_traffic_class_out(struct ifnet *ifp, struct mbuf *m)
+{
+ if (!(m->m_flags & M_PKTHDR))
+ return;
+
+ switch (m_get_traffic_class(m)) {
+ case MBUF_TC_BE:
+ ifp->if_tc.ifi_obepackets++;
+ ifp->if_tc.ifi_obebytes += m->m_pkthdr.len;
+ break;
+ case MBUF_TC_BK:
+ ifp->if_tc.ifi_obkpackets++;
+ ifp->if_tc.ifi_obkbytes += m->m_pkthdr.len;
+ break;
+ case MBUF_TC_VI:
+ ifp->if_tc.ifi_ovipackets++;
+ ifp->if_tc.ifi_ovibytes += m->m_pkthdr.len;
+ break;
+ case MBUF_TC_VO:
+ ifp->if_tc.ifi_ovopackets++;
+ ifp->if_tc.ifi_ovobytes += m->m_pkthdr.len;
+ break;
+ default:
+ break;
+ }
+
+ if (mbuf_is_traffic_class_privileged(m)) {
+ ifp->if_tc.ifi_opvpackets++;
+ ifp->if_tc.ifi_opvbytes += m->m_pkthdr.len;
+ }
+}
+
+static void
+dlil_count_chain_len(mbuf_t m, struct chain_len_stats *cls)
+{
+ mbuf_t n = m;
+ int chainlen = 0;
+
+ while (n != NULL) {
+ chainlen++;
+ n = n->m_next;
+ }
+ switch (chainlen) {
+ case 0:
+ break;
+ case 1:
+ atomic_add_64(&cls->cls_one, 1);
+ break;
+ case 2:
+ atomic_add_64(&cls->cls_two, 1);
+ break;
+ case 3:
+ atomic_add_64(&cls->cls_three, 1);
+ break;
+ case 4:
+ atomic_add_64(&cls->cls_four, 1);
+ break;
+ case 5:
+ default:
+ atomic_add_64(&cls->cls_five_or_more, 1);
+ break;
+ }
+}
+
+/*
+ * dlil_output
+ *
+ * Caller should have a lock on the protocol domain if the protocol
+ * doesn't support finer grained locking. In most cases, the lock
+ * will be held from the socket layer and won't be released until
+ * we return back to the socket layer.
+ *
+ * This does mean that we must take a protocol lock before we take
+ * an interface lock if we're going to take both. This makes sense
+ * because a protocol is likely to interact with an ifp while it
+ * is under the protocol lock.
+ *
+ * An advisory code will be returned if adv is not null. This
+ * can be used to provide feedback about interface queues to the
+ * application.
+ */
+errno_t
+dlil_output(ifnet_t ifp, protocol_family_t proto_family, mbuf_t packetlist,
+ void *route, const struct sockaddr *dest, int raw, struct flowadv *adv)
+{
+ ifnet_output_handler_func handler_func;
+ char *frame_type = NULL;
+ char *dst_linkaddr = NULL;
+ int retval = 0;
+ char frame_type_buffer[MAX_FRAME_TYPE_SIZE * 4];
+ char dst_linkaddr_buffer[MAX_LINKADDR * 4];
+ struct if_proto *proto = NULL;
+ mbuf_t m;
+ mbuf_t send_head = NULL;
+ mbuf_t *send_tail = &send_head;
+ int iorefcnt = 0;
+ u_int32_t pre = 0, post = 0;
+ u_int32_t fpkts = 0, fbytes = 0;
+ int32_t flen = 0;
+
+ KERNEL_DEBUG(DBG_FNC_DLIL_OUTPUT | DBG_FUNC_START, 0, 0, 0, 0, 0);
+
+ /*
+ * Get an io refcnt if the interface is attached to prevent ifnet_detach
+ * from happening while this operation is in progress
+ */
+ if (!ifnet_is_attached(ifp, 1)) {
+ retval = ENXIO;
+ goto cleanup;
+ }
+ iorefcnt = 1;
+
+ handler_func = ifp->if_output_handler;
+ VERIFY(handler_func != NULL);
+
+ /* update the driver's multicast filter, if needed */
+ if (ifp->if_updatemcasts > 0 && if_mcasts_update(ifp) == 0)
+ ifp->if_updatemcasts = 0;
+
+ frame_type = frame_type_buffer;
+ dst_linkaddr = dst_linkaddr_buffer;
+
+ if (raw == 0) {
+ ifnet_lock_shared(ifp);
+ /* callee holds a proto refcnt upon success */
+ proto = find_attached_proto(ifp, proto_family);
+ if (proto == NULL) {
+ ifnet_lock_done(ifp);
+ retval = ENXIO;
+ goto cleanup;
+ }
+ ifnet_lock_done(ifp);
+ }
+
+preout_again:
+ if (packetlist == NULL)
+ goto cleanup;
+
+ m = packetlist;
+ packetlist = packetlist->m_nextpkt;
+ m->m_nextpkt = NULL;
+
+ if (raw == 0) {
+ proto_media_preout preoutp = (proto->proto_kpi == kProtoKPI_v1 ?
+ proto->kpi.v1.pre_output : proto->kpi.v2.pre_output);
+ retval = 0;
+ if (preoutp != NULL) {
+ retval = preoutp(ifp, proto_family, &m, dest, route,
+ frame_type, dst_linkaddr);
+
+ if (retval != 0) {
+ if (retval == EJUSTRETURN)
+ goto preout_again;
+ m_freem(m);
+ goto cleanup;
+ }
+ }
+ }
+
+#if CONFIG_MACF_NET
+ retval = mac_ifnet_check_transmit(ifp, m, proto_family,
+ dlil_get_socket_type(&m, proto_family, raw));
+ if (retval != 0) {
+ m_freem(m);
+ goto cleanup;
+ }
+#endif
+
+ do {
+#if CONFIG_DTRACE
+ if (!raw && proto_family == PF_INET) {
+ struct ip *ip = mtod(m, struct ip *);
+ DTRACE_IP6(send, struct mbuf *, m, struct inpcb *, NULL,
+ struct ip *, ip, struct ifnet *, ifp,
+ struct ip *, ip, struct ip6_hdr *, NULL);
+
+ } else if (!raw && proto_family == PF_INET6) {
+ struct ip6_hdr *ip6 = mtod(m, struct ip6_hdr *);
+ DTRACE_IP6(send, struct mbuf *, m, struct inpcb *, NULL,
+ struct ip6_hdr *, ip6, struct ifnet *, ifp,
+ struct ip *, NULL, struct ip6_hdr *, ip6);
+ }
+#endif /* CONFIG_DTRACE */
+
+ if (raw == 0 && ifp->if_framer != NULL) {
+ int rcvif_set = 0;
+
+ /*
+ * If this is a broadcast packet that needs to be
+ * looped back into the system, set the inbound ifp
+ * to that of the outbound ifp. This will allow
+ * us to determine that it is a legitimate packet
+ * for the system. Only set the ifp if it's not
+ * already set, just to be safe.
+ */
+ if ((m->m_flags & (M_BCAST | M_LOOP)) &&
+ m->m_pkthdr.rcvif == NULL) {
+ m->m_pkthdr.rcvif = ifp;
+ rcvif_set = 1;
+ }
+
+ retval = ifp->if_framer(ifp, &m, dest, dst_linkaddr,
+ frame_type, &pre, &post);
+ if (retval != 0) {
+ if (retval != EJUSTRETURN)
+ m_freem(m);
+ goto next;
+ }
+
+ /*
+ * For partial checksum offload, adjust the start
+ * and stuff offsets based on the prepended header.
+ */
+ if ((m->m_pkthdr.csum_flags &
+ (CSUM_DATA_VALID | CSUM_PARTIAL)) ==
+ (CSUM_DATA_VALID | CSUM_PARTIAL)) {
+ m->m_pkthdr.csum_tx_stuff += pre;
+ m->m_pkthdr.csum_tx_start += pre;
+ }
+
+ if (hwcksum_dbg != 0 && !(ifp->if_flags & IFF_LOOPBACK))
+ dlil_output_cksum_dbg(ifp, m, pre,
+ proto_family);
+
+ /*
+ * Clear the ifp if it was set above, and to be
+ * safe, only if it is still the same as the
+ * outbound ifp we have in context. If it was
+ * looped back, then a copy of it was sent to the
+ * loopback interface with the rcvif set, and we
+ * are clearing the one that will go down to the
+ * layer below.
+ */
+ if (rcvif_set && m->m_pkthdr.rcvif == ifp)
+ m->m_pkthdr.rcvif = NULL;
+ }
+
+ /*
+ * Let interface filters (if any) do their thing ...
+ */
+ /* Do not pass VLAN tagged packets to filters PR-3586856 */
+ if ((m->m_pkthdr.csum_flags & CSUM_VLAN_TAG_VALID) == 0) {
+ retval = dlil_interface_filters_output(ifp,
+ &m, proto_family);
+ if (retval != 0) {
+ if (retval != EJUSTRETURN)
+ m_freem(m);
+ goto next;
+ }
+ }
+ /*
+ * Strip away M_PROTO1 bit prior to sending packet
+ * to the driver as this field may be used by the driver
+ */
+ m->m_flags &= ~M_PROTO1;
+
+ /*
+ * If the underlying interface is not capable of handling a
+ * packet whose data portion spans across physically disjoint
+ * pages, we need to "normalize" the packet so that we pass
+ * down a chain of mbufs where each mbuf points to a span that
+ * resides in the system page boundary. If the packet does
+ * not cross page(s), the following is a no-op.
+ */
+ if (!(ifp->if_hwassist & IFNET_MULTIPAGES)) {
+ if ((m = m_normalize(m)) == NULL)
+ goto next;
+ }
+
+ /*
+ * If this is a TSO packet, make sure the interface still
+ * advertise TSO capability.
+ */
+ if (TSO_IPV4_NOTOK(ifp, m) || TSO_IPV6_NOTOK(ifp, m)) {
+ retval = EMSGSIZE;
+ m_freem(m);
+ goto cleanup;
+ }
+
+ /*
+ * If the packet service class is not background,
+ * update the timestamp to indicate recent activity
+ * on a foreground socket.
+ */
+ if ((m->m_pkthdr.pkt_flags & PKTF_FLOW_ID) &&
+ m->m_pkthdr.pkt_flowsrc == FLOWSRC_INPCB) {
+ if (!(m->m_pkthdr.pkt_flags & PKTF_SO_BACKGROUND))
+ ifp->if_fg_sendts = net_uptime();
+
+ if (m->m_pkthdr.pkt_flags & PKTF_SO_REALTIME)
+ ifp->if_rt_sendts = net_uptime();
+ }
+
+ ifp_inc_traffic_class_out(ifp, m);
+ pktap_output(ifp, proto_family, m, pre, post);
+
+ /*
+ * Count the number of elements in the mbuf chain
+ */
+ if (tx_chain_len_count) {
+ dlil_count_chain_len(m, &tx_chain_len_stats);
+ }
+
+ /*
+ * Finally, call the driver.
+ */
+ if (ifp->if_eflags & (IFEF_SENDLIST | IFEF_ENQUEUE_MULTI)) {
+ if (m->m_pkthdr.pkt_flags & PKTF_FORWARDED) {
+ flen += (m_pktlen(m) - (pre + post));
+ m->m_pkthdr.pkt_flags &= ~PKTF_FORWARDED;
+ }
+ *send_tail = m;
+ send_tail = &m->m_nextpkt;
+ } else {
+ if (m->m_pkthdr.pkt_flags & PKTF_FORWARDED) {
+ flen = (m_pktlen(m) - (pre + post));
+ m->m_pkthdr.pkt_flags &= ~PKTF_FORWARDED;
+ } else {
+ flen = 0;
+ }
+ KERNEL_DEBUG(DBG_FNC_DLIL_IFOUT | DBG_FUNC_START,
+ 0, 0, 0, 0, 0);
+ retval = (*handler_func)(ifp, m);
+ if (retval == EQFULL || retval == EQSUSPENDED) {
+ if (adv != NULL && adv->code == FADV_SUCCESS) {
+ adv->code = (retval == EQFULL ?
+ FADV_FLOW_CONTROLLED :
+ FADV_SUSPENDED);
+ }
+ retval = 0;
+ }
+ if (retval == 0 && flen > 0) {
+ fbytes += flen;
+ fpkts++;
+ }
+ if (retval != 0 && dlil_verbose) {
+ printf("%s: output error on %s retval = %d\n",
+ __func__, if_name(ifp),
+ retval);
+ }
+ KERNEL_DEBUG(DBG_FNC_DLIL_IFOUT | DBG_FUNC_END,
+ 0, 0, 0, 0, 0);
+ }
+ KERNEL_DEBUG(DBG_FNC_DLIL_IFOUT | DBG_FUNC_END, 0, 0, 0, 0, 0);
+
+next:
+ m = packetlist;
+ if (m != NULL) {
+ packetlist = packetlist->m_nextpkt;
+ m->m_nextpkt = NULL;
+ }
+ } while (m != NULL);
+
+ if (send_head != NULL) {
+ KERNEL_DEBUG(DBG_FNC_DLIL_IFOUT | DBG_FUNC_START,
+ 0, 0, 0, 0, 0);
+ if (ifp->if_eflags & IFEF_SENDLIST) {
+ retval = (*handler_func)(ifp, send_head);
+ if (retval == EQFULL || retval == EQSUSPENDED) {
+ if (adv != NULL) {
+ adv->code = (retval == EQFULL ?
+ FADV_FLOW_CONTROLLED :
+ FADV_SUSPENDED);
+ }
+ retval = 0;
+ }
+ if (retval == 0 && flen > 0) {
+ fbytes += flen;
+ fpkts++;
+ }
+ if (retval != 0 && dlil_verbose) {
+ printf("%s: output error on %s retval = %d\n",
+ __func__, if_name(ifp), retval);
+ }
+ } else {
+ struct mbuf *send_m;
+ int enq_cnt = 0;
+ VERIFY(ifp->if_eflags & IFEF_ENQUEUE_MULTI);
+ while (send_head != NULL) {
+ send_m = send_head;
+ send_head = send_m->m_nextpkt;
+ send_m->m_nextpkt = NULL;
+ retval = (*handler_func)(ifp, send_m);
+ if (retval == EQFULL || retval == EQSUSPENDED) {
+ if (adv != NULL) {
+ adv->code = (retval == EQFULL ?
+ FADV_FLOW_CONTROLLED :
+ FADV_SUSPENDED);
+ }
+ retval = 0;
+ }
+ if (retval == 0) {
+ enq_cnt++;
+ if (flen > 0)
+ fpkts++;
+ }
+ if (retval != 0 && dlil_verbose) {
+ printf("%s: output error on %s "
+ "retval = %d\n",
+ __func__, if_name(ifp), retval);
+ }
+ }
+ if (enq_cnt > 0) {
+ fbytes += flen;
+ ifnet_start(ifp);
+ }
+ }
+ KERNEL_DEBUG(DBG_FNC_DLIL_IFOUT | DBG_FUNC_END, 0, 0, 0, 0, 0);
+ }
+
+ KERNEL_DEBUG(DBG_FNC_DLIL_OUTPUT | DBG_FUNC_END, 0, 0, 0, 0, 0);
+
+cleanup:
+ if (fbytes > 0)
+ ifp->if_fbytes += fbytes;
+ if (fpkts > 0)
+ ifp->if_fpackets += fpkts;
+ if (proto != NULL)
+ if_proto_free(proto);
+ if (packetlist) /* if any packets are left, clean up */
+ mbuf_freem_list(packetlist);
+ if (retval == EJUSTRETURN)
+ retval = 0;
+ if (iorefcnt == 1)
+ ifnet_decr_iorefcnt(ifp);
+
+ return (retval);
+}
+
+errno_t
+ifnet_ioctl(ifnet_t ifp, protocol_family_t proto_fam, u_long ioctl_code,
+ void *ioctl_arg)
+{
+ struct ifnet_filter *filter;
+ int retval = EOPNOTSUPP;
+ int result = 0;
+
+ if (ifp == NULL || ioctl_code == 0)
+ return (EINVAL);
+
+ /* Get an io ref count if the interface is attached */
+ if (!ifnet_is_attached(ifp, 1))
+ return (EOPNOTSUPP);
+
+ /*
+ * Run the interface filters first.
+ * We want to run all filters before calling the protocol,
+ * interface family, or interface.
+ */
+ lck_mtx_lock_spin(&ifp->if_flt_lock);
+ /* prevent filter list from changing in case we drop the lock */
+ if_flt_monitor_busy(ifp);
+ TAILQ_FOREACH(filter, &ifp->if_flt_head, filt_next) {
+ if (filter->filt_ioctl != NULL && (filter->filt_protocol == 0 ||
+ filter->filt_protocol == proto_fam)) {
+ lck_mtx_unlock(&ifp->if_flt_lock);
+
+ result = filter->filt_ioctl(filter->filt_cookie, ifp,
+ proto_fam, ioctl_code, ioctl_arg);
+
+ lck_mtx_lock_spin(&ifp->if_flt_lock);
+
+ /* Only update retval if no one has handled the ioctl */
+ if (retval == EOPNOTSUPP || result == EJUSTRETURN) {
+ if (result == ENOTSUP)
+ result = EOPNOTSUPP;
+ retval = result;
+ if (retval != 0 && retval != EOPNOTSUPP) {
+ /* we're done with the filter list */
+ if_flt_monitor_unbusy(ifp);
+ lck_mtx_unlock(&ifp->if_flt_lock);
+ goto cleanup;
+ }
+ }
+ }
+ }
+ /* we're done with the filter list */
+ if_flt_monitor_unbusy(ifp);
+ lck_mtx_unlock(&ifp->if_flt_lock);
+
+ /* Allow the protocol to handle the ioctl */
+ if (proto_fam != 0) {
+ struct if_proto *proto;
+
+ /* callee holds a proto refcnt upon success */
+ ifnet_lock_shared(ifp);
+ proto = find_attached_proto(ifp, proto_fam);
+ ifnet_lock_done(ifp);
+ if (proto != NULL) {
+ proto_media_ioctl ioctlp =
+ (proto->proto_kpi == kProtoKPI_v1 ?
+ proto->kpi.v1.ioctl : proto->kpi.v2.ioctl);
+ result = EOPNOTSUPP;
+ if (ioctlp != NULL)
+ result = ioctlp(ifp, proto_fam, ioctl_code,
+ ioctl_arg);
+ if_proto_free(proto);
+
+ /* Only update retval if no one has handled the ioctl */
+ if (retval == EOPNOTSUPP || result == EJUSTRETURN) {
+ if (result == ENOTSUP)
+ result = EOPNOTSUPP;
+ retval = result;
+ if (retval && retval != EOPNOTSUPP)
+ goto cleanup;
+ }
+ }
+ }
+
+ /* retval is either 0 or EOPNOTSUPP */
+
+ /*
+ * Let the interface handle this ioctl.
+ * If it returns EOPNOTSUPP, ignore that, we may have
+ * already handled this in the protocol or family.
+ */
+ if (ifp->if_ioctl)
+ result = (*ifp->if_ioctl)(ifp, ioctl_code, ioctl_arg);
+
+ /* Only update retval if no one has handled the ioctl */
+ if (retval == EOPNOTSUPP || result == EJUSTRETURN) {
+ if (result == ENOTSUP)
+ result = EOPNOTSUPP;
+ retval = result;
+ if (retval && retval != EOPNOTSUPP) {
+ goto cleanup;
+ }
+ }
+
+cleanup:
+ if (retval == EJUSTRETURN)
+ retval = 0;
+
+ ifnet_decr_iorefcnt(ifp);
+
+ return (retval);
+}
+
+__private_extern__ errno_t
+dlil_set_bpf_tap(ifnet_t ifp, bpf_tap_mode mode, bpf_packet_func callback)
+{
+ errno_t error = 0;
+
+
+ if (ifp->if_set_bpf_tap) {
+ /* Get an io reference on the interface if it is attached */
+ if (!ifnet_is_attached(ifp, 1))
+ return (ENXIO);
+ error = ifp->if_set_bpf_tap(ifp, mode, callback);
+ ifnet_decr_iorefcnt(ifp);
+ }
+ return (error);
+}
+
+errno_t
+dlil_resolve_multi(struct ifnet *ifp, const struct sockaddr *proto_addr,
+ struct sockaddr *ll_addr, size_t ll_len)
+{
+ errno_t result = EOPNOTSUPP;
+ struct if_proto *proto;
+ const struct sockaddr *verify;
+ proto_media_resolve_multi resolvep;
+
+ if (!ifnet_is_attached(ifp, 1))
+ return (result);
+
+ bzero(ll_addr, ll_len);
+
+ /* Call the protocol first; callee holds a proto refcnt upon success */
+ ifnet_lock_shared(ifp);
+ proto = find_attached_proto(ifp, proto_addr->sa_family);
+ ifnet_lock_done(ifp);
+ if (proto != NULL) {
+ resolvep = (proto->proto_kpi == kProtoKPI_v1 ?
+ proto->kpi.v1.resolve_multi : proto->kpi.v2.resolve_multi);
+ if (resolvep != NULL)
+ result = resolvep(ifp, proto_addr,
+ (struct sockaddr_dl *)(void *)ll_addr, ll_len);
+ if_proto_free(proto);
+ }
+
+ /* Let the interface verify the multicast address */
+ if ((result == EOPNOTSUPP || result == 0) && ifp->if_check_multi) {
+ if (result == 0)
+ verify = ll_addr;
+ else
+ verify = proto_addr;
+ result = ifp->if_check_multi(ifp, verify);
+ }
+
+ ifnet_decr_iorefcnt(ifp);
+ return (result);
+}
+
+__private_extern__ errno_t
+dlil_send_arp_internal(ifnet_t ifp, u_short arpop,
+ const struct sockaddr_dl *sender_hw, const struct sockaddr *sender_proto,
+ const struct sockaddr_dl *target_hw, const struct sockaddr *target_proto)
+{
+ struct if_proto *proto;
+ errno_t result = 0;
+
+ /* callee holds a proto refcnt upon success */
+ ifnet_lock_shared(ifp);
+ proto = find_attached_proto(ifp, target_proto->sa_family);
+ ifnet_lock_done(ifp);
+ if (proto == NULL) {
+ result = ENOTSUP;
+ } else {
+ proto_media_send_arp arpp;
+ arpp = (proto->proto_kpi == kProtoKPI_v1 ?
+ proto->kpi.v1.send_arp : proto->kpi.v2.send_arp);
+ if (arpp == NULL) {
+ result = ENOTSUP;
+ } else {
+ switch (arpop) {
+ case ARPOP_REQUEST:
+ arpstat.txrequests++;
+ if (target_hw != NULL)
+ arpstat.txurequests++;
+ break;
+ case ARPOP_REPLY:
+ arpstat.txreplies++;
+ break;
+ }
+ result = arpp(ifp, arpop, sender_hw, sender_proto,
+ target_hw, target_proto);
+ }
+ if_proto_free(proto);
+ }
+
+ return (result);
+}
+
+struct net_thread_marks { };
+static const struct net_thread_marks net_thread_marks_base = { };
+
+__private_extern__ const net_thread_marks_t net_thread_marks_none =
+ &net_thread_marks_base;
+
+__private_extern__ net_thread_marks_t
+net_thread_marks_push(u_int32_t push)
+{
+ static const char *const base = (const void*)&net_thread_marks_base;
+ u_int32_t pop = 0;
+
+ if (push != 0) {
+ struct uthread *uth = get_bsdthread_info(current_thread());
+
+ pop = push & ~uth->uu_network_marks;
+ if (pop != 0)
+ uth->uu_network_marks |= pop;
+ }
+
+ return ((net_thread_marks_t)&base[pop]);
+}
+
+__private_extern__ net_thread_marks_t
+net_thread_unmarks_push(u_int32_t unpush)
+{
+ static const char *const base = (const void*)&net_thread_marks_base;
+ u_int32_t unpop = 0;
+
+ if (unpush != 0) {
+ struct uthread *uth = get_bsdthread_info(current_thread());
+
+ unpop = unpush & uth->uu_network_marks;
+ if (unpop != 0)
+ uth->uu_network_marks &= ~unpop;
+ }
+
+ return ((net_thread_marks_t)&base[unpop]);
+}
+
+__private_extern__ void
+net_thread_marks_pop(net_thread_marks_t popx)
+{
+ static const char *const base = (const void*)&net_thread_marks_base;
+ const ptrdiff_t pop = (const char *)popx - (const char *)base;
+
+ if (pop != 0) {
+ static const ptrdiff_t ones = (ptrdiff_t)(u_int32_t)~0U;
+ struct uthread *uth = get_bsdthread_info(current_thread());
+
+ VERIFY((pop & ones) == pop);
+ VERIFY((ptrdiff_t)(uth->uu_network_marks & pop) == pop);
+ uth->uu_network_marks &= ~pop;
+ }
+}
+
+__private_extern__ void
+net_thread_unmarks_pop(net_thread_marks_t unpopx)
+{
+ static const char *const base = (const void*)&net_thread_marks_base;
+ ptrdiff_t unpop = (const char *)unpopx - (const char *)base;
+
+ if (unpop != 0) {
+ static const ptrdiff_t ones = (ptrdiff_t)(u_int32_t)~0U;
+ struct uthread *uth = get_bsdthread_info(current_thread());
+
+ VERIFY((unpop & ones) == unpop);
+ VERIFY((ptrdiff_t)(uth->uu_network_marks & unpop) == 0);
+ uth->uu_network_marks |= unpop;
+ }
+}
+
+__private_extern__ u_int32_t
+net_thread_is_marked(u_int32_t check)
+{
+ if (check != 0) {
+ struct uthread *uth = get_bsdthread_info(current_thread());
+ return (uth->uu_network_marks & check);
+ }
+ else
+ return (0);
+}
+
+__private_extern__ u_int32_t
+net_thread_is_unmarked(u_int32_t check)
+{
+ if (check != 0) {
+ struct uthread *uth = get_bsdthread_info(current_thread());
+ return (~uth->uu_network_marks & check);
+ }
+ else
+ return (0);
+}
+
+static __inline__ int
+_is_announcement(const struct sockaddr_in * sender_sin,
+ const struct sockaddr_in * target_sin)
+{
+ if (sender_sin == NULL) {
+ return (FALSE);
+ }
+ return (sender_sin->sin_addr.s_addr == target_sin->sin_addr.s_addr);
+}
+
+__private_extern__ errno_t
+dlil_send_arp(ifnet_t ifp, u_short arpop, const struct sockaddr_dl *sender_hw,
+ const struct sockaddr *sender_proto, const struct sockaddr_dl *target_hw,
+ const struct sockaddr *target_proto0, u_int32_t rtflags)
+{
+ errno_t result = 0;
+ const struct sockaddr_in * sender_sin;
+ const struct sockaddr_in * target_sin;
+ struct sockaddr_inarp target_proto_sinarp;
+ struct sockaddr *target_proto = (void *)(uintptr_t)target_proto0;
+
+ if (target_proto == NULL || (sender_proto != NULL &&
+ sender_proto->sa_family != target_proto->sa_family))
+ return (EINVAL);
+
+ /*
+ * If the target is a (default) router, provide that
+ * information to the send_arp callback routine.
+ */
+ if (rtflags & RTF_ROUTER) {
+ bcopy(target_proto, &target_proto_sinarp,
+ sizeof (struct sockaddr_in));
+ target_proto_sinarp.sin_other |= SIN_ROUTER;
+ target_proto = (struct sockaddr *)&target_proto_sinarp;
+ }
+
+ /*
+ * If this is an ARP request and the target IP is IPv4LL,
+ * send the request on all interfaces. The exception is
+ * an announcement, which must only appear on the specific
+ * interface.
+ */
+ sender_sin = (struct sockaddr_in *)(void *)(uintptr_t)sender_proto;
+ target_sin = (struct sockaddr_in *)(void *)(uintptr_t)target_proto;
+ if (target_proto->sa_family == AF_INET &&
+ IN_LINKLOCAL(ntohl(target_sin->sin_addr.s_addr)) &&
+ ipv4_ll_arp_aware != 0 && arpop == ARPOP_REQUEST &&
+ !_is_announcement(target_sin, sender_sin)) {
+ ifnet_t *ifp_list;
+ u_int32_t count;
+ u_int32_t ifp_on;
+
+ result = ENOTSUP;
+
+ if (ifnet_list_get(IFNET_FAMILY_ANY, &ifp_list, &count) == 0) {
+ for (ifp_on = 0; ifp_on < count; ifp_on++) {
+ errno_t new_result;
+ ifaddr_t source_hw = NULL;
+ ifaddr_t source_ip = NULL;
+ struct sockaddr_in source_ip_copy;
+ struct ifnet *cur_ifp = ifp_list[ifp_on];
+
+ /*
+ * Only arp on interfaces marked for IPv4LL
+ * ARPing. This may mean that we don't ARP on
+ * the interface the subnet route points to.
+ */
+ if (!(cur_ifp->if_eflags & IFEF_ARPLL))
+ continue;
+
+ /* Find the source IP address */
+ ifnet_lock_shared(cur_ifp);
+ source_hw = cur_ifp->if_lladdr;
+ TAILQ_FOREACH(source_ip, &cur_ifp->if_addrhead,
+ ifa_link) {
+ IFA_LOCK(source_ip);
+ if (source_ip->ifa_addr != NULL &&
+ source_ip->ifa_addr->sa_family ==
+ AF_INET) {
+ /* Copy the source IP address */
+ source_ip_copy =
+ *(struct sockaddr_in *)
+ (void *)source_ip->ifa_addr;
+ IFA_UNLOCK(source_ip);
+ break;
+ }
+ IFA_UNLOCK(source_ip);
+ }
+
+ /* No IP Source, don't arp */
+ if (source_ip == NULL) {
+ ifnet_lock_done(cur_ifp);
+ continue;
+ }
+
+ IFA_ADDREF(source_hw);
+ ifnet_lock_done(cur_ifp);
+
+ /* Send the ARP */
+ new_result = dlil_send_arp_internal(cur_ifp,
+ arpop, (struct sockaddr_dl *)(void *)
+ source_hw->ifa_addr,
+ (struct sockaddr *)&source_ip_copy, NULL,
+ target_proto);
+
+ IFA_REMREF(source_hw);
+ if (result == ENOTSUP) {
+ result = new_result;
+ }
+ }
+ ifnet_list_free(ifp_list);
+ }
+ } else {
+ result = dlil_send_arp_internal(ifp, arpop, sender_hw,
+ sender_proto, target_hw, target_proto);
+ }
+
+ return (result);
+}
+
+/*
+ * Caller must hold ifnet head lock.
+ */
+static int
+ifnet_lookup(struct ifnet *ifp)
+{
+ struct ifnet *_ifp;
+
+ lck_rw_assert(&ifnet_head_lock, LCK_RW_ASSERT_HELD);
+ TAILQ_FOREACH(_ifp, &ifnet_head, if_link) {
+ if (_ifp == ifp)
+ break;
+ }
+ return (_ifp != NULL);
+}
+
+/*
+ * Caller has to pass a non-zero refio argument to get a
+ * IO reference count. This will prevent ifnet_detach from
+ * being called when there are outstanding io reference counts.
+ */
+int
+ifnet_is_attached(struct ifnet *ifp, int refio)
+{
+ int ret;
+
+ lck_mtx_lock_spin(&ifp->if_ref_lock);
+ if ((ret = ((ifp->if_refflags & (IFRF_ATTACHED | IFRF_DETACHING)) ==
+ IFRF_ATTACHED))) {
+ if (refio > 0)
+ ifp->if_refio++;
+ }
+ lck_mtx_unlock(&ifp->if_ref_lock);
+
+ return (ret);
+}
+
+/*
+ * Caller must ensure the interface is attached; the assumption is that
+ * there is at least an outstanding IO reference count held already.
+ * Most callers would call ifnet_is_attached() instead.
+ */
+void
+ifnet_incr_iorefcnt(struct ifnet *ifp)
+{
+ lck_mtx_lock_spin(&ifp->if_ref_lock);
+ VERIFY((ifp->if_refflags & (IFRF_ATTACHED | IFRF_DETACHING)) ==
+ IFRF_ATTACHED);
+ VERIFY(ifp->if_refio > 0);
+ ifp->if_refio++;
+ lck_mtx_unlock(&ifp->if_ref_lock);
+}
+
+void
+ifnet_decr_iorefcnt(struct ifnet *ifp)
+{
+ lck_mtx_lock_spin(&ifp->if_ref_lock);
+ VERIFY(ifp->if_refio > 0);
+ VERIFY((ifp->if_refflags & (IFRF_ATTACHED | IFRF_DETACHING)) != 0);
+ ifp->if_refio--;
+
+ /*
+ * if there are no more outstanding io references, wakeup the
+ * ifnet_detach thread if detaching flag is set.
+ */
+ if (ifp->if_refio == 0 &&
+ (ifp->if_refflags & IFRF_DETACHING) != 0) {
+ wakeup(&(ifp->if_refio));
+ }
+ lck_mtx_unlock(&ifp->if_ref_lock);
+}
+
+static void
+dlil_if_trace(struct dlil_ifnet *dl_if, int refhold)
+{
+ struct dlil_ifnet_dbg *dl_if_dbg = (struct dlil_ifnet_dbg *)dl_if;
+ ctrace_t *tr;
+ u_int32_t idx;
+ u_int16_t *cnt;
+
+ if (!(dl_if->dl_if_flags & DLIF_DEBUG)) {
+ panic("%s: dl_if %p has no debug structure", __func__, dl_if);
+ /* NOTREACHED */
+ }
+
+ if (refhold) {
+ cnt = &dl_if_dbg->dldbg_if_refhold_cnt;
+ tr = dl_if_dbg->dldbg_if_refhold;
+ } else {
+ cnt = &dl_if_dbg->dldbg_if_refrele_cnt;
+ tr = dl_if_dbg->dldbg_if_refrele;
+ }
+
+ idx = atomic_add_16_ov(cnt, 1) % IF_REF_TRACE_HIST_SIZE;
+ ctrace_record(&tr[idx]);
+}
+
+errno_t
+dlil_if_ref(struct ifnet *ifp)
+{
+ struct dlil_ifnet *dl_if = (struct dlil_ifnet *)ifp;
+
+ if (dl_if == NULL)
+ return (EINVAL);
+
+ lck_mtx_lock_spin(&dl_if->dl_if_lock);
+ ++dl_if->dl_if_refcnt;
+ if (dl_if->dl_if_refcnt == 0) {
+ panic("%s: wraparound refcnt for ifp=%p", __func__, ifp);
+ /* NOTREACHED */
+ }
+ if (dl_if->dl_if_trace != NULL)
+ (*dl_if->dl_if_trace)(dl_if, TRUE);
+ lck_mtx_unlock(&dl_if->dl_if_lock);
+
+ return (0);
+}
+
+errno_t
+dlil_if_free(struct ifnet *ifp)
+{
+ struct dlil_ifnet *dl_if = (struct dlil_ifnet *)ifp;
+
+ if (dl_if == NULL)
+ return (EINVAL);
+
+ lck_mtx_lock_spin(&dl_if->dl_if_lock);
+ if (dl_if->dl_if_refcnt == 0) {
+ panic("%s: negative refcnt for ifp=%p", __func__, ifp);
+ /* NOTREACHED */
+ }
+ --dl_if->dl_if_refcnt;
+ if (dl_if->dl_if_trace != NULL)
+ (*dl_if->dl_if_trace)(dl_if, FALSE);
+ lck_mtx_unlock(&dl_if->dl_if_lock);
+
+ return (0);
+}
+
+static errno_t
+dlil_attach_protocol_internal(struct if_proto *proto,
+ const struct ifnet_demux_desc *demux_list, u_int32_t demux_count)
+{
+ struct kev_dl_proto_data ev_pr_data;
+ struct ifnet *ifp = proto->ifp;
+ int retval = 0;
+ u_int32_t hash_value = proto_hash_value(proto->protocol_family);
+ struct if_proto *prev_proto;
+ struct if_proto *_proto;
+
+ /* callee holds a proto refcnt upon success */
+ ifnet_lock_exclusive(ifp);
+ _proto = find_attached_proto(ifp, proto->protocol_family);
+ if (_proto != NULL) {
+ ifnet_lock_done(ifp);
+ if_proto_free(_proto);
+ return (EEXIST);
+ }
+
+ /*
+ * Call family module add_proto routine so it can refine the
+ * demux descriptors as it wishes.
+ */
+ retval = ifp->if_add_proto(ifp, proto->protocol_family, demux_list,
+ demux_count);
+ if (retval) {
+ ifnet_lock_done(ifp);
+ return (retval);
+ }
+
+ /*
+ * Insert the protocol in the hash
+ */
+ prev_proto = SLIST_FIRST(&ifp->if_proto_hash[hash_value]);
+ while (prev_proto != NULL && SLIST_NEXT(prev_proto, next_hash) != NULL)
+ prev_proto = SLIST_NEXT(prev_proto, next_hash);
+ if (prev_proto)
+ SLIST_INSERT_AFTER(prev_proto, proto, next_hash);
+ else
+ SLIST_INSERT_HEAD(&ifp->if_proto_hash[hash_value],
+ proto, next_hash);
+
+ /* hold a proto refcnt for attach */
+ if_proto_ref(proto);
+
+ /*
+ * The reserved field carries the number of protocol still attached
+ * (subject to change)
+ */
+ ev_pr_data.proto_family = proto->protocol_family;
+ ev_pr_data.proto_remaining_count = dlil_ifp_proto_count(ifp);
+ ifnet_lock_done(ifp);
+
+ dlil_post_msg(ifp, KEV_DL_SUBCLASS, KEV_DL_PROTO_ATTACHED,
+ (struct net_event_data *)&ev_pr_data,
+ sizeof (struct kev_dl_proto_data));
+ return (retval);
+}
+
+errno_t
+ifnet_attach_protocol(ifnet_t ifp, protocol_family_t protocol,
+ const struct ifnet_attach_proto_param *proto_details)
+{
+ int retval = 0;
+ struct if_proto *ifproto = NULL;
+
+ ifnet_head_lock_shared();
+ if (ifp == NULL || protocol == 0 || proto_details == NULL) {
+ retval = EINVAL;
+ goto end;
+ }
+ /* Check that the interface is in the global list */
+ if (!ifnet_lookup(ifp)) {
+ retval = ENXIO;
+ goto end;
+ }
+
+ ifproto = zalloc(dlif_proto_zone);
+ if (ifproto == NULL) {
+ retval = ENOMEM;
+ goto end;
+ }
+ bzero(ifproto, dlif_proto_size);
+
+ /* refcnt held above during lookup */
+ ifproto->ifp = ifp;
+ ifproto->protocol_family = protocol;
+ ifproto->proto_kpi = kProtoKPI_v1;
+ ifproto->kpi.v1.input = proto_details->input;
+ ifproto->kpi.v1.pre_output = proto_details->pre_output;
+ ifproto->kpi.v1.event = proto_details->event;
+ ifproto->kpi.v1.ioctl = proto_details->ioctl;
+ ifproto->kpi.v1.detached = proto_details->detached;
+ ifproto->kpi.v1.resolve_multi = proto_details->resolve;
+ ifproto->kpi.v1.send_arp = proto_details->send_arp;
+
+ retval = dlil_attach_protocol_internal(ifproto,
+ proto_details->demux_list, proto_details->demux_count);
+
+ if (dlil_verbose) {
+ printf("%s: attached v1 protocol %d\n", if_name(ifp),
+ protocol);
+ }
+
+end:
+ if (retval != 0 && retval != EEXIST && ifp != NULL) {
+ DLIL_PRINTF("%s: failed to attach v1 protocol %d (err=%d)\n",
+ if_name(ifp), protocol, retval);
+ }
+ ifnet_head_done();
+ if (retval != 0 && ifproto != NULL)
+ zfree(dlif_proto_zone, ifproto);
+ return (retval);
+}
+
+errno_t
+ifnet_attach_protocol_v2(ifnet_t ifp, protocol_family_t protocol,
+ const struct ifnet_attach_proto_param_v2 *proto_details)
+{
+ int retval = 0;
+ struct if_proto *ifproto = NULL;
+
+ ifnet_head_lock_shared();
+ if (ifp == NULL || protocol == 0 || proto_details == NULL) {
+ retval = EINVAL;
+ goto end;
+ }
+ /* Check that the interface is in the global list */
+ if (!ifnet_lookup(ifp)) {
+ retval = ENXIO;
+ goto end;
+ }
+
+ ifproto = zalloc(dlif_proto_zone);
+ if (ifproto == NULL) {
+ retval = ENOMEM;
+ goto end;
+ }
+ bzero(ifproto, sizeof(*ifproto));
+
+ /* refcnt held above during lookup */
+ ifproto->ifp = ifp;
+ ifproto->protocol_family = protocol;
+ ifproto->proto_kpi = kProtoKPI_v2;
+ ifproto->kpi.v2.input = proto_details->input;
+ ifproto->kpi.v2.pre_output = proto_details->pre_output;
+ ifproto->kpi.v2.event = proto_details->event;
+ ifproto->kpi.v2.ioctl = proto_details->ioctl;
+ ifproto->kpi.v2.detached = proto_details->detached;
+ ifproto->kpi.v2.resolve_multi = proto_details->resolve;
+ ifproto->kpi.v2.send_arp = proto_details->send_arp;
+
+ retval = dlil_attach_protocol_internal(ifproto,
+ proto_details->demux_list, proto_details->demux_count);
+
+ if (dlil_verbose) {
+ printf("%s: attached v2 protocol %d\n", if_name(ifp),
+ protocol);
+ }
+
+end:
+ if (retval != 0 && retval != EEXIST && ifp != NULL) {
+ DLIL_PRINTF("%s: failed to attach v2 protocol %d (err=%d)\n",
+ if_name(ifp), protocol, retval);
+ }
+ ifnet_head_done();
+ if (retval != 0 && ifproto != NULL)
+ zfree(dlif_proto_zone, ifproto);
+ return (retval);
+}
+
+errno_t
+ifnet_detach_protocol(ifnet_t ifp, protocol_family_t proto_family)
+{
+ struct if_proto *proto = NULL;
+ int retval = 0;
+
+ if (ifp == NULL || proto_family == 0) {
+ retval = EINVAL;
+ goto end;
+ }
+
+ ifnet_lock_exclusive(ifp);
+ /* callee holds a proto refcnt upon success */
+ proto = find_attached_proto(ifp, proto_family);
+ if (proto == NULL) {
+ retval = ENXIO;
+ ifnet_lock_done(ifp);
+ goto end;
+ }
+
+ /* call family module del_proto */
+ if (ifp->if_del_proto)
+ ifp->if_del_proto(ifp, proto->protocol_family);
+
+ SLIST_REMOVE(&ifp->if_proto_hash[proto_hash_value(proto_family)],
+ proto, if_proto, next_hash);
+
+ if (proto->proto_kpi == kProtoKPI_v1) {
+ proto->kpi.v1.input = ifproto_media_input_v1;
+ proto->kpi.v1.pre_output = ifproto_media_preout;
+ proto->kpi.v1.event = ifproto_media_event;
+ proto->kpi.v1.ioctl = ifproto_media_ioctl;
+ proto->kpi.v1.resolve_multi = ifproto_media_resolve_multi;
+ proto->kpi.v1.send_arp = ifproto_media_send_arp;
+ } else {
+ proto->kpi.v2.input = ifproto_media_input_v2;
+ proto->kpi.v2.pre_output = ifproto_media_preout;
+ proto->kpi.v2.event = ifproto_media_event;
+ proto->kpi.v2.ioctl = ifproto_media_ioctl;
+ proto->kpi.v2.resolve_multi = ifproto_media_resolve_multi;
+ proto->kpi.v2.send_arp = ifproto_media_send_arp;
+ }
+ proto->detached = 1;
+ ifnet_lock_done(ifp);
+
+ if (dlil_verbose) {
+ printf("%s: detached %s protocol %d\n", if_name(ifp),
+ (proto->proto_kpi == kProtoKPI_v1) ?
+ "v1" : "v2", proto_family);
+ }
+
+ /* release proto refcnt held during protocol attach */
+ if_proto_free(proto);
+
+ /*
+ * Release proto refcnt held during lookup; the rest of
+ * protocol detach steps will happen when the last proto
+ * reference is released.
+ */
+ if_proto_free(proto);
+
+end:
+ return (retval);
+}
+
+
+static errno_t
+ifproto_media_input_v1(struct ifnet *ifp, protocol_family_t protocol,
+ struct mbuf *packet, char *header)
+{
+#pragma unused(ifp, protocol, packet, header)
+ return (ENXIO);
+}
+
+static errno_t
+ifproto_media_input_v2(struct ifnet *ifp, protocol_family_t protocol,
+ struct mbuf *packet)
+{
+#pragma unused(ifp, protocol, packet)
+ return (ENXIO);
+
+}
+
+static errno_t
+ifproto_media_preout(struct ifnet *ifp, protocol_family_t protocol,
+ mbuf_t *packet, const struct sockaddr *dest, void *route, char *frame_type,
+ char *link_layer_dest)
+{
+#pragma unused(ifp, protocol, packet, dest, route, frame_type, link_layer_dest)
+ return (ENXIO);
+
+}
+
+static void
+ifproto_media_event(struct ifnet *ifp, protocol_family_t protocol,
+ const struct kev_msg *event)
+{
+#pragma unused(ifp, protocol, event)
+}
+
+static errno_t
+ifproto_media_ioctl(struct ifnet *ifp, protocol_family_t protocol,
+ unsigned long command, void *argument)
+{
+#pragma unused(ifp, protocol, command, argument)
+ return (ENXIO);
+}
+
+static errno_t
+ifproto_media_resolve_multi(ifnet_t ifp, const struct sockaddr *proto_addr,
+ struct sockaddr_dl *out_ll, size_t ll_len)
+{
+#pragma unused(ifp, proto_addr, out_ll, ll_len)
+ return (ENXIO);
+}
+
+static errno_t
+ifproto_media_send_arp(struct ifnet *ifp, u_short arpop,
+ const struct sockaddr_dl *sender_hw, const struct sockaddr *sender_proto,
+ const struct sockaddr_dl *target_hw, const struct sockaddr *target_proto)
+{
+#pragma unused(ifp, arpop, sender_hw, sender_proto, target_hw, target_proto)
+ return (ENXIO);
+}
+
+extern int if_next_index(void);
+extern int tcp_ecn_outbound;
+
+errno_t
+ifnet_attach(ifnet_t ifp, const struct sockaddr_dl *ll_addr)
+{
+ struct ifnet *tmp_if;
+ struct ifaddr *ifa;
+ struct if_data_internal if_data_saved;
+ struct dlil_ifnet *dl_if = (struct dlil_ifnet *)ifp;
+ struct dlil_threading_info *dl_inp;
+ u_int32_t sflags = 0;
+ int err;
+
+ if (ifp == NULL)
+ return (EINVAL);
+
+ /*
+ * Serialize ifnet attach using dlil_ifnet_lock, in order to
+ * prevent the interface from being configured while it is
+ * embryonic, as ifnet_head_lock is dropped and reacquired
+ * below prior to marking the ifnet with IFRF_ATTACHED.
+ */
+ dlil_if_lock();
+ ifnet_head_lock_exclusive();
+ /* Verify we aren't already on the list */
+ TAILQ_FOREACH(tmp_if, &ifnet_head, if_link) {
+ if (tmp_if == ifp) {
+ ifnet_head_done();
+ dlil_if_unlock();
+ return (EEXIST);
+ }
+ }
+
+ lck_mtx_lock_spin(&ifp->if_ref_lock);
+ if (ifp->if_refflags & IFRF_ATTACHED) {
+ panic_plain("%s: flags mismatch (attached set) ifp=%p",
+ __func__, ifp);
+ /* NOTREACHED */
+ }
+ lck_mtx_unlock(&ifp->if_ref_lock);
+
+ ifnet_lock_exclusive(ifp);
+
+ /* Sanity check */
+ VERIFY(ifp->if_detaching_link.tqe_next == NULL);
+ VERIFY(ifp->if_detaching_link.tqe_prev == NULL);
+
+ if (ll_addr != NULL) {
+ if (ifp->if_addrlen == 0) {
+ ifp->if_addrlen = ll_addr->sdl_alen;
+ } else if (ll_addr->sdl_alen != ifp->if_addrlen) {
+ ifnet_lock_done(ifp);
+ ifnet_head_done();
+ dlil_if_unlock();
+ return (EINVAL);
+ }
+ }
+
+ /*
+ * Allow interfaces without protocol families to attach
+ * only if they have the necessary fields filled out.
+ */
+ if (ifp->if_add_proto == NULL || ifp->if_del_proto == NULL) {
+ DLIL_PRINTF("%s: Attempt to attach interface without "
+ "family module - %d\n", __func__, ifp->if_family);
+ ifnet_lock_done(ifp);
+ ifnet_head_done();
+ dlil_if_unlock();
+ return (ENODEV);
+ }
+
+ /* Allocate protocol hash table */
+ VERIFY(ifp->if_proto_hash == NULL);
+ ifp->if_proto_hash = zalloc(dlif_phash_zone);
+ if (ifp->if_proto_hash == NULL) {
+ ifnet_lock_done(ifp);
+ ifnet_head_done();
+ dlil_if_unlock();
+ return (ENOBUFS);
+ }
+ bzero(ifp->if_proto_hash, dlif_phash_size);
+
+ lck_mtx_lock_spin(&ifp->if_flt_lock);
+ VERIFY(TAILQ_EMPTY(&ifp->if_flt_head));
+ TAILQ_INIT(&ifp->if_flt_head);
+ VERIFY(ifp->if_flt_busy == 0);
+ VERIFY(ifp->if_flt_waiters == 0);
+ lck_mtx_unlock(&ifp->if_flt_lock);
+
+ if (!(dl_if->dl_if_flags & DLIF_REUSE)) {
+ VERIFY(LIST_EMPTY(&ifp->if_multiaddrs));
+ LIST_INIT(&ifp->if_multiaddrs);
+ }
+
+ VERIFY(ifp->if_allhostsinm == NULL);
+ VERIFY(TAILQ_EMPTY(&ifp->if_addrhead));
+ TAILQ_INIT(&ifp->if_addrhead);
+
+ if (ifp->if_index == 0) {
+ int idx = if_next_index();
+
+ if (idx == -1) {
+ ifp->if_index = 0;
+ ifnet_lock_done(ifp);
+ ifnet_head_done();
+ dlil_if_unlock();
+ return (ENOBUFS);
+ }
+ ifp->if_index = idx;
+ }
+ /* There should not be anything occupying this slot */
+ VERIFY(ifindex2ifnet[ifp->if_index] == NULL);
+
+ /* allocate (if needed) and initialize a link address */
+ VERIFY(!(dl_if->dl_if_flags & DLIF_REUSE) || ifp->if_lladdr != NULL);
+ ifa = dlil_alloc_lladdr(ifp, ll_addr);
+ if (ifa == NULL) {
+ ifnet_lock_done(ifp);
+ ifnet_head_done();
+ dlil_if_unlock();
+ return (ENOBUFS);
+ }
+
+ VERIFY(ifnet_addrs[ifp->if_index - 1] == NULL);
+ ifnet_addrs[ifp->if_index - 1] = ifa;
+
+ /* make this address the first on the list */
+ IFA_LOCK(ifa);
+ /* hold a reference for ifnet_addrs[] */
+ IFA_ADDREF_LOCKED(ifa);
+ /* if_attach_link_ifa() holds a reference for ifa_link */
+ if_attach_link_ifa(ifp, ifa);
+ IFA_UNLOCK(ifa);
+
+#if CONFIG_MACF_NET
+ mac_ifnet_label_associate(ifp);
+#endif
+
+ TAILQ_INSERT_TAIL(&ifnet_head, ifp, if_link);
+ ifindex2ifnet[ifp->if_index] = ifp;
+
+ /* Hold a reference to the underlying dlil_ifnet */
+ ifnet_reference(ifp);
+
+ /* Clear stats (save and restore other fields that we care) */
+ if_data_saved = ifp->if_data;
+ bzero(&ifp->if_data, sizeof (ifp->if_data));
+ ifp->if_data.ifi_type = if_data_saved.ifi_type;
+ ifp->if_data.ifi_typelen = if_data_saved.ifi_typelen;
+ ifp->if_data.ifi_physical = if_data_saved.ifi_physical;
+ ifp->if_data.ifi_addrlen = if_data_saved.ifi_addrlen;
+ ifp->if_data.ifi_hdrlen = if_data_saved.ifi_hdrlen;
+ ifp->if_data.ifi_mtu = if_data_saved.ifi_mtu;
+ ifp->if_data.ifi_baudrate = if_data_saved.ifi_baudrate;
+ ifp->if_data.ifi_hwassist = if_data_saved.ifi_hwassist;
+ ifp->if_data.ifi_tso_v4_mtu = if_data_saved.ifi_tso_v4_mtu;
+ ifp->if_data.ifi_tso_v6_mtu = if_data_saved.ifi_tso_v6_mtu;
+ ifnet_touch_lastchange(ifp);
+
+ VERIFY(ifp->if_output_sched_model == IFNET_SCHED_MODEL_NORMAL ||
+ ifp->if_output_sched_model == IFNET_SCHED_MODEL_DRIVER_MANAGED ||
+ ifp->if_output_sched_model == IFNET_SCHED_MODEL_FQ_CODEL);
+
+ /* By default, use SFB and enable flow advisory */
+ sflags = PKTSCHEDF_QALG_SFB;
+ if (if_flowadv)
+ sflags |= PKTSCHEDF_QALG_FLOWCTL;
+
+ if (if_delaybased_queue)
+ sflags |= PKTSCHEDF_QALG_DELAYBASED;
+
+ /* Initialize transmit queue(s) */
+ err = ifclassq_setup(ifp, sflags, (dl_if->dl_if_flags & DLIF_REUSE));
+ if (err != 0) {
+ panic_plain("%s: ifp=%p couldn't initialize transmit queue; "
+ "err=%d", __func__, ifp, err);
+ /* NOTREACHED */
+ }
+
+ /* Sanity checks on the input thread storage */
+ dl_inp = &dl_if->dl_if_inpstorage;
+ bzero(&dl_inp->stats, sizeof (dl_inp->stats));
+ VERIFY(dl_inp->input_waiting == 0);
+ VERIFY(dl_inp->wtot == 0);
+ VERIFY(dl_inp->ifp == NULL);
+ VERIFY(qhead(&dl_inp->rcvq_pkts) == NULL && qempty(&dl_inp->rcvq_pkts));
+ VERIFY(qlimit(&dl_inp->rcvq_pkts) == 0);
+ VERIFY(!dl_inp->net_affinity);
+ VERIFY(ifp->if_inp == NULL);
+ VERIFY(dl_inp->input_thr == THREAD_NULL);
+ VERIFY(dl_inp->wloop_thr == THREAD_NULL);
+ VERIFY(dl_inp->poll_thr == THREAD_NULL);
+ VERIFY(dl_inp->tag == 0);
+ VERIFY(dl_inp->mode == IFNET_MODEL_INPUT_POLL_OFF);
+ bzero(&dl_inp->tstats, sizeof (dl_inp->tstats));
+ bzero(&dl_inp->pstats, sizeof (dl_inp->pstats));
+ bzero(&dl_inp->sstats, sizeof (dl_inp->sstats));
+#if IFNET_INPUT_SANITY_CHK
+ VERIFY(dl_inp->input_mbuf_cnt == 0);
+#endif /* IFNET_INPUT_SANITY_CHK */
+
+ /*
+ * A specific DLIL input thread is created per Ethernet/cellular
+ * interface or for an interface which supports opportunistic
+ * input polling. Pseudo interfaces or other types of interfaces
+ * use the main input thread instead.
+ */
+ if ((net_rxpoll && (ifp->if_eflags & IFEF_RXPOLL)) ||
+ ifp->if_type == IFT_ETHER || ifp->if_type == IFT_CELLULAR) {
+ ifp->if_inp = dl_inp;
+ err = dlil_create_input_thread(ifp, ifp->if_inp);
+ if (err != 0) {
+ panic_plain("%s: ifp=%p couldn't get an input thread; "
+ "err=%d", __func__, ifp, err);
+ /* NOTREACHED */
+ }
+ }
+
+ /*
+ * If the driver supports the new transmit model, calculate flow hash
+ * and create a workloop starter thread to invoke the if_start callback
+ * where the packets may be dequeued and transmitted.
+ */
+ if (ifp->if_eflags & IFEF_TXSTART) {
+ ifp->if_flowhash = ifnet_calc_flowhash(ifp);
+ VERIFY(ifp->if_flowhash != 0);
+
+ VERIFY(ifp->if_start != NULL);
+ VERIFY(ifp->if_start_thread == THREAD_NULL);
+
+ ifnet_set_start_cycle(ifp, NULL);
+ ifp->if_start_active = 0;
+ ifp->if_start_req = 0;
+ ifp->if_start_flags = 0;
+ if ((err = kernel_thread_start(ifnet_start_thread_fn, ifp,
+ &ifp->if_start_thread)) != KERN_SUCCESS) {
+ panic_plain("%s: ifp=%p couldn't get a start thread; "
+ "err=%d", __func__, ifp, err);
+ /* NOTREACHED */
+ }
+ ml_thread_policy(ifp->if_start_thread, MACHINE_GROUP,
+ (MACHINE_NETWORK_GROUP|MACHINE_NETWORK_WORKLOOP));
+ } else {
+ ifp->if_flowhash = 0;
+ }
+
+ /*
+ * If the driver supports the new receive model, create a poller
+ * thread to invoke if_input_poll callback where the packets may
+ * be dequeued from the driver and processed for reception.
+ */
+ if (ifp->if_eflags & IFEF_RXPOLL) {
+ VERIFY(ifp->if_input_poll != NULL);
+ VERIFY(ifp->if_input_ctl != NULL);
+ VERIFY(ifp->if_poll_thread == THREAD_NULL);
+
+ ifnet_set_poll_cycle(ifp, NULL);
+ ifp->if_poll_update = 0;
+ ifp->if_poll_active = 0;
+ ifp->if_poll_req = 0;
+ if ((err = kernel_thread_start(ifnet_poll_thread_fn, ifp,
+ &ifp->if_poll_thread)) != KERN_SUCCESS) {
+ panic_plain("%s: ifp=%p couldn't get a poll thread; "
+ "err=%d", __func__, ifp, err);
+ /* NOTREACHED */
+ }
+ ml_thread_policy(ifp->if_poll_thread, MACHINE_GROUP,
+ (MACHINE_NETWORK_GROUP|MACHINE_NETWORK_WORKLOOP));
+ }
+
+ VERIFY(ifp->if_desc.ifd_maxlen == IF_DESCSIZE);
+ VERIFY(ifp->if_desc.ifd_len == 0);
+ VERIFY(ifp->if_desc.ifd_desc != NULL);
+
+ /* Record attach PC stacktrace */
+ ctrace_record(&((struct dlil_ifnet *)ifp)->dl_if_attach);
+
+ ifp->if_updatemcasts = 0;
+ if (!LIST_EMPTY(&ifp->if_multiaddrs)) {
+ struct ifmultiaddr *ifma;
+ LIST_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
+ IFMA_LOCK(ifma);
+ if (ifma->ifma_addr->sa_family == AF_LINK ||
+ ifma->ifma_addr->sa_family == AF_UNSPEC)
+ ifp->if_updatemcasts++;
+ IFMA_UNLOCK(ifma);
+ }
+
+ printf("%s: attached with %d suspended link-layer multicast "
+ "membership(s)\n", if_name(ifp),
+ ifp->if_updatemcasts);
+ }
+
+ /* Clear logging parameters */
+ bzero(&ifp->if_log, sizeof (ifp->if_log));
+ ifp->if_fg_sendts = 0;
+
+ VERIFY(ifp->if_delegated.ifp == NULL);
+ VERIFY(ifp->if_delegated.type == 0);
+ VERIFY(ifp->if_delegated.family == 0);
+ VERIFY(ifp->if_delegated.subfamily == 0);
+ VERIFY(ifp->if_delegated.expensive == 0);
+
+ VERIFY(ifp->if_agentids == NULL);
+ VERIFY(ifp->if_agentcount == 0);
+
+ /* Reset interface state */
+ bzero(&ifp->if_interface_state, sizeof(ifp->if_interface_state));
+ ifp->if_interface_state.valid_bitmask |=
+ IF_INTERFACE_STATE_INTERFACE_AVAILABILITY_VALID;
+ ifp->if_interface_state.interface_availability =
+ IF_INTERFACE_STATE_INTERFACE_AVAILABLE;
+
+ /* Initialize Link Quality Metric (loopback [lo0] is always good) */
+ if (ifp == lo_ifp) {
+ ifp->if_interface_state.lqm_state = IFNET_LQM_THRESH_GOOD;
+ ifp->if_interface_state.valid_bitmask |=
+ IF_INTERFACE_STATE_LQM_STATE_VALID;
+ } else {
+ ifp->if_interface_state.lqm_state = IFNET_LQM_THRESH_UNKNOWN;
+ }
+
+ /*
+ * Enable ECN capability on this interface depending on the
+ * value of ECN global setting
+ */
+ if (tcp_ecn_outbound == 2 && !IFNET_IS_CELLULAR(ifp)) {
+ ifp->if_eflags |= IFEF_ECN_ENABLE;
+ ifp->if_eflags &= ~IFEF_ECN_DISABLE;
+ }
+
+ /*
+ * Built-in Cyclops always on policy for WiFi infra
+ */
+ if (IFNET_IS_WIFI_INFRA(ifp) && net_qos_policy_wifi_enabled != 0) {
+ errno_t error;
+
+ error = if_set_qosmarking_mode(ifp,
+ IFRTYPE_QOSMARKING_FASTLANE);
+ if (error != 0) {
+ printf("%s if_set_qosmarking_mode(%s) error %d\n",
+ __func__, ifp->if_xname, error);
+ } else {
+ ifp->if_eflags |= IFEF_QOSMARKING_ENABLED;
+#if (DEVELOPMENT || DEBUG)
+ printf("%s fastlane enabled on %s\n",
+ __func__, ifp->if_xname);
+#endif /* (DEVELOPMENT || DEBUG) */
+ }
+ }
+
+ ifnet_lock_done(ifp);
+ ifnet_head_done();
+
+ lck_mtx_lock(&ifp->if_cached_route_lock);
+ /* Enable forwarding cached route */
+ ifp->if_fwd_cacheok = 1;
+ /* Clean up any existing cached routes */
+ ROUTE_RELEASE(&ifp->if_fwd_route);
+ bzero(&ifp->if_fwd_route, sizeof (ifp->if_fwd_route));
+ ROUTE_RELEASE(&ifp->if_src_route);
+ bzero(&ifp->if_src_route, sizeof (ifp->if_src_route));
+ ROUTE_RELEASE(&ifp->if_src_route6);
+ bzero(&ifp->if_src_route6, sizeof (ifp->if_src_route6));
+ lck_mtx_unlock(&ifp->if_cached_route_lock);
+
+ ifnet_llreach_ifattach(ifp, (dl_if->dl_if_flags & DLIF_REUSE));
+
+ /*
+ * Allocate and attach IGMPv3/MLDv2 interface specific variables
+ * and trees; do this before the ifnet is marked as attached.
+ * The ifnet keeps the reference to the info structures even after
+ * the ifnet is detached, since the network-layer records still
+ * refer to the info structures even after that. This also
+ * makes it possible for them to still function after the ifnet
+ * is recycled or reattached.
+ */
+#if INET
+ if (IGMP_IFINFO(ifp) == NULL) {
+ IGMP_IFINFO(ifp) = igmp_domifattach(ifp, M_WAITOK);
+ VERIFY(IGMP_IFINFO(ifp) != NULL);
+ } else {
+ VERIFY(IGMP_IFINFO(ifp)->igi_ifp == ifp);
+ igmp_domifreattach(IGMP_IFINFO(ifp));
+ }
+#endif /* INET */
+#if INET6
+ if (MLD_IFINFO(ifp) == NULL) {
+ MLD_IFINFO(ifp) = mld_domifattach(ifp, M_WAITOK);
+ VERIFY(MLD_IFINFO(ifp) != NULL);
+ } else {
+ VERIFY(MLD_IFINFO(ifp)->mli_ifp == ifp);
+ mld_domifreattach(MLD_IFINFO(ifp));
+ }
+#endif /* INET6 */
+
+ VERIFY(ifp->if_data_threshold == 0);
+
+ /*
+ * Finally, mark this ifnet as attached.
+ */
+ lck_mtx_lock(rnh_lock);
+ ifnet_lock_exclusive(ifp);
+ lck_mtx_lock_spin(&ifp->if_ref_lock);
+ ifp->if_refflags = IFRF_ATTACHED;
+ lck_mtx_unlock(&ifp->if_ref_lock);
+ if (net_rtref) {
+ /* boot-args override; enable idle notification */
+ (void) ifnet_set_idle_flags_locked(ifp, IFRF_IDLE_NOTIFY,
+ IFRF_IDLE_NOTIFY);
+ } else {
+ /* apply previous request(s) to set the idle flags, if any */
+ (void) ifnet_set_idle_flags_locked(ifp, ifp->if_idle_new_flags,
+ ifp->if_idle_new_flags_mask);
+
+ }
+ ifnet_lock_done(ifp);
+ lck_mtx_unlock(rnh_lock);
+ dlil_if_unlock();
+
+#if PF
+ /*
+ * Attach packet filter to this interface, if enabled.
+ */
+ pf_ifnet_hook(ifp, 1);
+#endif /* PF */
+
+ dlil_post_msg(ifp, KEV_DL_SUBCLASS, KEV_DL_IF_ATTACHED, NULL, 0);
+
+ if (dlil_verbose) {
+ printf("%s: attached%s\n", if_name(ifp),
+ (dl_if->dl_if_flags & DLIF_REUSE) ? " (recycled)" : "");
+ }
+
+ return (0);
+}
+
+/*
+ * Prepare the storage for the first/permanent link address, which must
+ * must have the same lifetime as the ifnet itself. Although the link
+ * address gets removed from if_addrhead and ifnet_addrs[] at detach time,
+ * its location in memory must never change as it may still be referred
+ * to by some parts of the system afterwards (unfortunate implementation
+ * artifacts inherited from BSD.)
+ *
+ * Caller must hold ifnet lock as writer.
+ */
+static struct ifaddr *
+dlil_alloc_lladdr(struct ifnet *ifp, const struct sockaddr_dl *ll_addr)
+{
+ struct ifaddr *ifa, *oifa;
+ struct sockaddr_dl *asdl, *msdl;
+ char workbuf[IFNAMSIZ*2];
+ int namelen, masklen, socksize;
+ struct dlil_ifnet *dl_if = (struct dlil_ifnet *)ifp;
+
+ ifnet_lock_assert(ifp, IFNET_LCK_ASSERT_EXCLUSIVE);
+ VERIFY(ll_addr == NULL || ll_addr->sdl_alen == ifp->if_addrlen);
+
+ namelen = snprintf(workbuf, sizeof (workbuf), "%s",
+ if_name(ifp));
+ masklen = offsetof(struct sockaddr_dl, sdl_data[0])
+ + ((namelen > 0) ? namelen : 0);
+ socksize = masklen + ifp->if_addrlen;
+#define ROUNDUP(a) (1 + (((a) - 1) | (sizeof (u_int32_t) - 1)))
+ if ((u_int32_t)socksize < sizeof (struct sockaddr_dl))
+ socksize = sizeof(struct sockaddr_dl);
+ socksize = ROUNDUP(socksize);
+#undef ROUNDUP
+
+ ifa = ifp->if_lladdr;
+ if (socksize > DLIL_SDLMAXLEN ||
+ (ifa != NULL && ifa != &dl_if->dl_if_lladdr.ifa)) {
+ /*
+ * Rare, but in the event that the link address requires
+ * more storage space than DLIL_SDLMAXLEN, allocate the
+ * largest possible storages for address and mask, such
+ * that we can reuse the same space when if_addrlen grows.
+ * This same space will be used when if_addrlen shrinks.
+ */
+ if (ifa == NULL || ifa == &dl_if->dl_if_lladdr.ifa) {
+ int ifasize = sizeof (*ifa) + 2 * SOCK_MAXADDRLEN;
+ ifa = _MALLOC(ifasize, M_IFADDR, M_WAITOK | M_ZERO);
+ if (ifa == NULL)
+ return (NULL);
+ ifa_lock_init(ifa);
+ /* Don't set IFD_ALLOC, as this is permanent */
+ ifa->ifa_debug = IFD_LINK;
+ }
+ IFA_LOCK(ifa);
+ /* address and mask sockaddr_dl locations */
+ asdl = (struct sockaddr_dl *)(ifa + 1);
+ bzero(asdl, SOCK_MAXADDRLEN);
+ msdl = (struct sockaddr_dl *)(void *)
+ ((char *)asdl + SOCK_MAXADDRLEN);
+ bzero(msdl, SOCK_MAXADDRLEN);
+ } else {
+ VERIFY(ifa == NULL || ifa == &dl_if->dl_if_lladdr.ifa);
+ /*
+ * Use the storage areas for address and mask within the
+ * dlil_ifnet structure. This is the most common case.
+ */
+ if (ifa == NULL) {
+ ifa = &dl_if->dl_if_lladdr.ifa;
+ ifa_lock_init(ifa);
+ /* Don't set IFD_ALLOC, as this is permanent */
+ ifa->ifa_debug = IFD_LINK;
+ }
+ IFA_LOCK(ifa);
+ /* address and mask sockaddr_dl locations */
+ asdl = (struct sockaddr_dl *)(void *)&dl_if->dl_if_lladdr.asdl;
+ bzero(asdl, sizeof (dl_if->dl_if_lladdr.asdl));
+ msdl = (struct sockaddr_dl *)(void *)&dl_if->dl_if_lladdr.msdl;
+ bzero(msdl, sizeof (dl_if->dl_if_lladdr.msdl));
+ }
+
+ /* hold a permanent reference for the ifnet itself */
+ IFA_ADDREF_LOCKED(ifa);
+ oifa = ifp->if_lladdr;
+ ifp->if_lladdr = ifa;
+
+ VERIFY(ifa->ifa_debug == IFD_LINK);
+ ifa->ifa_ifp = ifp;
+ ifa->ifa_rtrequest = link_rtrequest;
+ ifa->ifa_addr = (struct sockaddr *)asdl;
+ asdl->sdl_len = socksize;
+ asdl->sdl_family = AF_LINK;
+ if (namelen > 0) {
+ bcopy(workbuf, asdl->sdl_data, min(namelen,
+ sizeof (asdl->sdl_data)));
+ asdl->sdl_nlen = namelen;
+ } else {
+ asdl->sdl_nlen = 0;
+ }
+ asdl->sdl_index = ifp->if_index;
+ asdl->sdl_type = ifp->if_type;
+ if (ll_addr != NULL) {
+ asdl->sdl_alen = ll_addr->sdl_alen;
+ bcopy(CONST_LLADDR(ll_addr), LLADDR(asdl), asdl->sdl_alen);
+ } else {
+ asdl->sdl_alen = 0;
+ }
+ ifa->ifa_netmask = (struct sockaddr *)msdl;
+ msdl->sdl_len = masklen;
+ while (namelen > 0)
+ msdl->sdl_data[--namelen] = 0xff;
+ IFA_UNLOCK(ifa);
+
+ if (oifa != NULL)
+ IFA_REMREF(oifa);
+
+ return (ifa);
+}
+
+static void
+if_purgeaddrs(struct ifnet *ifp)
+{
+#if INET
+ in_purgeaddrs(ifp);
+#endif /* INET */
+#if INET6
+ in6_purgeaddrs(ifp);
+#endif /* INET6 */
+}
+
+errno_t
+ifnet_detach(ifnet_t ifp)
+{
+ struct ifnet *delegated_ifp;
+ struct nd_ifinfo *ndi = NULL;
+
+ if (ifp == NULL)
+ return (EINVAL);
+
+ ndi = ND_IFINFO(ifp);
+ if (NULL != ndi)
+ ndi->cga_initialized = FALSE;
+
+ lck_mtx_lock(rnh_lock);
+ ifnet_head_lock_exclusive();
+ ifnet_lock_exclusive(ifp);
+
+ /*
+ * Check to see if this interface has previously triggered
+ * aggressive protocol draining; if so, decrement the global
+ * refcnt and clear PR_AGGDRAIN on the route domain if
+ * there are no more of such an interface around.
+ */
+ (void) ifnet_set_idle_flags_locked(ifp, 0, ~0);
+
+ lck_mtx_lock_spin(&ifp->if_ref_lock);
+ if (!(ifp->if_refflags & IFRF_ATTACHED)) {
+ lck_mtx_unlock(&ifp->if_ref_lock);
+ ifnet_lock_done(ifp);
+ ifnet_head_done();
+ lck_mtx_unlock(rnh_lock);
+ return (EINVAL);
+ } else if (ifp->if_refflags & IFRF_DETACHING) {
+ /* Interface has already been detached */
+ lck_mtx_unlock(&ifp->if_ref_lock);
+ ifnet_lock_done(ifp);
+ ifnet_head_done();
+ lck_mtx_unlock(rnh_lock);
+ return (ENXIO);
+ }
+ /* Indicate this interface is being detached */
+ ifp->if_refflags &= ~IFRF_ATTACHED;
+ ifp->if_refflags |= IFRF_DETACHING;
+ lck_mtx_unlock(&ifp->if_ref_lock);
+
+ if (dlil_verbose)
+ printf("%s: detaching\n", if_name(ifp));
+
+ /* Reset ECN enable/disable flags */
+ ifp->if_eflags &= ~IFEF_ECN_DISABLE;
+ ifp->if_eflags &= ~IFEF_ECN_ENABLE;
+
+ /*
+ * Remove ifnet from the ifnet_head, ifindex2ifnet[]; it will
+ * no longer be visible during lookups from this point.
+ */
+ VERIFY(ifindex2ifnet[ifp->if_index] == ifp);
+ TAILQ_REMOVE(&ifnet_head, ifp, if_link);
+ ifp->if_link.tqe_next = NULL;
+ ifp->if_link.tqe_prev = NULL;
+ if (ifp->if_ordered_link.tqe_next != NULL ||
+ ifp->if_ordered_link.tqe_prev != NULL) {
+ ifnet_remove_from_ordered_list(ifp);
+ }
+ ifindex2ifnet[ifp->if_index] = NULL;
+
+ /* 18717626 - reset IFEF_IPV4_ROUTER and IFEF_IPV6_ROUTER */
+ ifp->if_eflags &= ~(IFEF_IPV4_ROUTER | IFEF_IPV6_ROUTER);
+
+ /* Record detach PC stacktrace */
+ ctrace_record(&((struct dlil_ifnet *)ifp)->dl_if_detach);
+
+ /* Clear logging parameters */
+ bzero(&ifp->if_log, sizeof (ifp->if_log));
+
+ /* Clear delegated interface info (reference released below) */
+ delegated_ifp = ifp->if_delegated.ifp;
+ bzero(&ifp->if_delegated, sizeof (ifp->if_delegated));
+
+ /* Reset interface state */
+ bzero(&ifp->if_interface_state, sizeof(ifp->if_interface_state));
+
+ ifnet_lock_done(ifp);
+ ifnet_head_done();
+ lck_mtx_unlock(rnh_lock);
+
+ /* Release reference held on the delegated interface */
+ if (delegated_ifp != NULL)
+ ifnet_release(delegated_ifp);
+
+ /* Reset Link Quality Metric (unless loopback [lo0]) */
+ if (ifp != lo_ifp)
+ if_lqm_update(ifp, IFNET_LQM_THRESH_OFF, 0);
+
+ /* Reset TCP local statistics */
+ if (ifp->if_tcp_stat != NULL)
+ bzero(ifp->if_tcp_stat, sizeof(*ifp->if_tcp_stat));
+
+ /* Reset UDP local statistics */
+ if (ifp->if_udp_stat != NULL)
+ bzero(ifp->if_udp_stat, sizeof(*ifp->if_udp_stat));
+
+ /* Reset ifnet IPv4 stats */
+ if (ifp->if_ipv4_stat != NULL)
+ bzero(ifp->if_ipv4_stat, sizeof(*ifp->if_ipv4_stat));
+
+ /* Reset ifnet IPv6 stats */
+ if (ifp->if_ipv6_stat != NULL)
+ bzero(ifp->if_ipv6_stat, sizeof(*ifp->if_ipv6_stat));
+
+ /* Release memory held for interface link status report */
+ if (ifp->if_link_status != NULL) {
+ FREE(ifp->if_link_status, M_TEMP);
+ ifp->if_link_status = NULL;
+ }
+
+ /* Clear agent IDs */
+ if (ifp->if_agentids != NULL) {
+ FREE(ifp->if_agentids, M_NETAGENT);
+ ifp->if_agentids = NULL;
+ }
+ ifp->if_agentcount = 0;
+
+
+ /* Let BPF know we're detaching */
+ bpfdetach(ifp);
+
+ /* Mark the interface as DOWN */
+ if_down(ifp);
+
+ /* Disable forwarding cached route */
+ lck_mtx_lock(&ifp->if_cached_route_lock);
+ ifp->if_fwd_cacheok = 0;
+ lck_mtx_unlock(&ifp->if_cached_route_lock);
+
+ ifp->if_data_threshold = 0;
+ /*
+ * Drain any deferred IGMPv3/MLDv2 query responses, but keep the
+ * references to the info structures and leave them attached to
+ * this ifnet.
+ */
+#if INET
+ igmp_domifdetach(ifp);
+#endif /* INET */
+#if INET6
+ mld_domifdetach(ifp);
+#endif /* INET6 */
+
+ dlil_post_msg(ifp, KEV_DL_SUBCLASS, KEV_DL_IF_DETACHING, NULL, 0);
+
+ /* Let worker thread take care of the rest, to avoid reentrancy */
+ dlil_if_lock();
+ ifnet_detaching_enqueue(ifp);
+ dlil_if_unlock();
+
+ return (0);
+}
+
+static void
+ifnet_detaching_enqueue(struct ifnet *ifp)
+{
+ dlil_if_lock_assert();
+
+ ++ifnet_detaching_cnt;
+ VERIFY(ifnet_detaching_cnt != 0);
+ TAILQ_INSERT_TAIL(&ifnet_detaching_head, ifp, if_detaching_link);
+ wakeup((caddr_t)&ifnet_delayed_run);
+}
+
+static struct ifnet *
+ifnet_detaching_dequeue(void)
+{
+ struct ifnet *ifp;
+
+ dlil_if_lock_assert();
+
+ ifp = TAILQ_FIRST(&ifnet_detaching_head);
+ VERIFY(ifnet_detaching_cnt != 0 || ifp == NULL);
+ if (ifp != NULL) {
+ VERIFY(ifnet_detaching_cnt != 0);
+ --ifnet_detaching_cnt;
+ TAILQ_REMOVE(&ifnet_detaching_head, ifp, if_detaching_link);
+ ifp->if_detaching_link.tqe_next = NULL;
+ ifp->if_detaching_link.tqe_prev = NULL;
+ }
+ return (ifp);
+}
+
+static int
+ifnet_detacher_thread_cont(int err)
+{
+#pragma unused(err)
+ struct ifnet *ifp;
+
+ for (;;) {
+ dlil_if_lock_assert();
+ while (ifnet_detaching_cnt == 0) {
+ (void) msleep0(&ifnet_delayed_run, &dlil_ifnet_lock,
+ (PZERO - 1), "ifnet_detacher_cont", 0,
+ ifnet_detacher_thread_cont);
+ /* NOTREACHED */
+ }
+
+ VERIFY(TAILQ_FIRST(&ifnet_detaching_head) != NULL);
+
+ /* Take care of detaching ifnet */
+ ifp = ifnet_detaching_dequeue();
+ if (ifp != NULL) {
+ dlil_if_unlock();
+ ifnet_detach_final(ifp);
+ dlil_if_lock();
+ }
+ }
+}
+
+static void
+ifnet_detacher_thread_func(void *v, wait_result_t w)
+{
+#pragma unused(v, w)
+ dlil_if_lock();
+ (void) msleep0(&ifnet_delayed_run, &dlil_ifnet_lock,
+ (PZERO - 1), "ifnet_detacher", 0, ifnet_detacher_thread_cont);
+ /*
+ * msleep0() shouldn't have returned as PCATCH was not set;
+ * therefore assert in this case.
+ */
+ dlil_if_unlock();
+ VERIFY(0);
+}
+
+static void
+ifnet_detach_final(struct ifnet *ifp)
+{
+ struct ifnet_filter *filter, *filter_next;
+ struct ifnet_filter_head fhead;
+ struct dlil_threading_info *inp;
+ struct ifaddr *ifa;
+ ifnet_detached_func if_free;
+ int i;
+
+ lck_mtx_lock(&ifp->if_ref_lock);
+ if (!(ifp->if_refflags & IFRF_DETACHING)) {
+ panic("%s: flags mismatch (detaching not set) ifp=%p",
+ __func__, ifp);
+ /* NOTREACHED */
+ }
+
+ /*
+ * Wait until the existing IO references get released
+ * before we proceed with ifnet_detach. This is not a
+ * common case, so block without using a continuation.
+ */
+ while (ifp->if_refio > 0) {
+ printf("%s: Waiting for IO references on %s interface "
+ "to be released\n", __func__, if_name(ifp));
+ (void) msleep(&(ifp->if_refio), &ifp->if_ref_lock,
+ (PZERO - 1), "ifnet_ioref_wait", NULL);
+ }
+ lck_mtx_unlock(&ifp->if_ref_lock);
+
+ /* Drain and destroy send queue */
+ ifclassq_teardown(ifp);
+
+ /* Detach interface filters */
+ lck_mtx_lock(&ifp->if_flt_lock);
+ if_flt_monitor_enter(ifp);
+
+ lck_mtx_assert(&ifp->if_flt_lock, LCK_MTX_ASSERT_OWNED);
+ fhead = ifp->if_flt_head;
+ TAILQ_INIT(&ifp->if_flt_head);
+
+ for (filter = TAILQ_FIRST(&fhead); filter; filter = filter_next) {
+ filter_next = TAILQ_NEXT(filter, filt_next);
+ lck_mtx_unlock(&ifp->if_flt_lock);
+
+ dlil_detach_filter_internal(filter, 1);
+ lck_mtx_lock(&ifp->if_flt_lock);
+ }
+ if_flt_monitor_leave(ifp);
+ lck_mtx_unlock(&ifp->if_flt_lock);
+
+ /* Tell upper layers to drop their network addresses */
+ if_purgeaddrs(ifp);
+
+ ifnet_lock_exclusive(ifp);
+
+ /* Uplumb all protocols */
+ for (i = 0; i < PROTO_HASH_SLOTS; i++) {
+ struct if_proto *proto;
+
+ proto = SLIST_FIRST(&ifp->if_proto_hash[i]);
+ while (proto != NULL) {
+ protocol_family_t family = proto->protocol_family;
+ ifnet_lock_done(ifp);
+ proto_unplumb(family, ifp);
+ ifnet_lock_exclusive(ifp);
+ proto = SLIST_FIRST(&ifp->if_proto_hash[i]);
+ }
+ /* There should not be any protocols left */
+ VERIFY(SLIST_EMPTY(&ifp->if_proto_hash[i]));
+ }
+ zfree(dlif_phash_zone, ifp->if_proto_hash);
+ ifp->if_proto_hash = NULL;
+
+ /* Detach (permanent) link address from if_addrhead */
+ ifa = TAILQ_FIRST(&ifp->if_addrhead);
+ VERIFY(ifnet_addrs[ifp->if_index - 1] == ifa);
+ IFA_LOCK(ifa);
+ if_detach_link_ifa(ifp, ifa);
+ IFA_UNLOCK(ifa);
+
+ /* Remove (permanent) link address from ifnet_addrs[] */
+ IFA_REMREF(ifa);
+ ifnet_addrs[ifp->if_index - 1] = NULL;
+
+ /* This interface should not be on {ifnet_head,detaching} */
+ VERIFY(ifp->if_link.tqe_next == NULL);
+ VERIFY(ifp->if_link.tqe_prev == NULL);
+ VERIFY(ifp->if_detaching_link.tqe_next == NULL);
+ VERIFY(ifp->if_detaching_link.tqe_prev == NULL);
+ VERIFY(ifp->if_ordered_link.tqe_next == NULL);
+ VERIFY(ifp->if_ordered_link.tqe_prev == NULL);
+
+ /* The slot should have been emptied */
+ VERIFY(ifindex2ifnet[ifp->if_index] == NULL);
+
+ /* There should not be any addresses left */
+ VERIFY(TAILQ_EMPTY(&ifp->if_addrhead));
+
+ /*
+ * Signal the starter thread to terminate itself.
+ */
+ if (ifp->if_start_thread != THREAD_NULL) {
+ lck_mtx_lock_spin(&ifp->if_start_lock);
+ ifp->if_start_flags = 0;
+ ifp->if_start_thread = THREAD_NULL;
+ wakeup_one((caddr_t)&ifp->if_start_thread);
+ lck_mtx_unlock(&ifp->if_start_lock);
+ }
+
+ /*
+ * Signal the poller thread to terminate itself.
+ */
+ if (ifp->if_poll_thread != THREAD_NULL) {
+ lck_mtx_lock_spin(&ifp->if_poll_lock);
+ ifp->if_poll_thread = THREAD_NULL;
+ wakeup_one((caddr_t)&ifp->if_poll_thread);
+ lck_mtx_unlock(&ifp->if_poll_lock);
+ }
+
+ /*
+ * If thread affinity was set for the workloop thread, we will need
+ * to tear down the affinity and release the extra reference count
+ * taken at attach time. Does not apply to lo0 or other interfaces
+ * without dedicated input threads.
+ */
+ if ((inp = ifp->if_inp) != NULL) {
+ VERIFY(inp != dlil_main_input_thread);
+
+ if (inp->net_affinity) {
+ struct thread *tp, *wtp, *ptp;
+
+ lck_mtx_lock_spin(&inp->input_lck);
+ wtp = inp->wloop_thr;
+ inp->wloop_thr = THREAD_NULL;
+ ptp = inp->poll_thr;
+ inp->poll_thr = THREAD_NULL;
+ tp = inp->input_thr; /* don't nullify now */
+ inp->tag = 0;
+ inp->net_affinity = FALSE;
+ lck_mtx_unlock(&inp->input_lck);
+
+ /* Tear down poll thread affinity */
+ if (ptp != NULL) {
+ VERIFY(ifp->if_eflags & IFEF_RXPOLL);
+ (void) dlil_affinity_set(ptp,
+ THREAD_AFFINITY_TAG_NULL);
+ thread_deallocate(ptp);
+ }
+
+ /* Tear down workloop thread affinity */
+ if (wtp != NULL) {
+ (void) dlil_affinity_set(wtp,
+ THREAD_AFFINITY_TAG_NULL);
+ thread_deallocate(wtp);
+ }
+
+ /* Tear down DLIL input thread affinity */
+ (void) dlil_affinity_set(tp, THREAD_AFFINITY_TAG_NULL);
+ thread_deallocate(tp);
+ }
+
+ /* disassociate ifp DLIL input thread */
+ ifp->if_inp = NULL;
+
+ lck_mtx_lock_spin(&inp->input_lck);
+ inp->input_waiting |= DLIL_INPUT_TERMINATE;
+ if (!(inp->input_waiting & DLIL_INPUT_RUNNING)) {
+ wakeup_one((caddr_t)&inp->input_waiting);
+ }
+ lck_mtx_unlock(&inp->input_lck);
+ }
+
+ /* The driver might unload, so point these to ourselves */
+ if_free = ifp->if_free;
+ ifp->if_output_handler = ifp_if_output;
+ ifp->if_output = ifp_if_output;
+ ifp->if_pre_enqueue = ifp_if_output;
+ ifp->if_start = ifp_if_start;
+ ifp->if_output_ctl = ifp_if_ctl;
+ ifp->if_input_handler = ifp_if_input;
+ ifp->if_input_poll = ifp_if_input_poll;
+ ifp->if_input_ctl = ifp_if_ctl;
+ ifp->if_ioctl = ifp_if_ioctl;
+ ifp->if_set_bpf_tap = ifp_if_set_bpf_tap;
+ ifp->if_free = ifp_if_free;
+ ifp->if_demux = ifp_if_demux;
+ ifp->if_event = ifp_if_event;
+ ifp->if_framer_legacy = ifp_if_framer;
+ ifp->if_framer = ifp_if_framer_extended;
+ ifp->if_add_proto = ifp_if_add_proto;
+ ifp->if_del_proto = ifp_if_del_proto;
+ ifp->if_check_multi = ifp_if_check_multi;
+
+ /* wipe out interface description */
+ VERIFY(ifp->if_desc.ifd_maxlen == IF_DESCSIZE);
+ ifp->if_desc.ifd_len = 0;
+ VERIFY(ifp->if_desc.ifd_desc != NULL);
+ bzero(ifp->if_desc.ifd_desc, IF_DESCSIZE);
+
+ /* there shouldn't be any delegation by now */
+ VERIFY(ifp->if_delegated.ifp == NULL);
+ VERIFY(ifp->if_delegated.type == 0);
+ VERIFY(ifp->if_delegated.family == 0);
+ VERIFY(ifp->if_delegated.subfamily == 0);
+ VERIFY(ifp->if_delegated.expensive == 0);
+
+ /* QoS marking get cleared */
+ ifp->if_eflags &= ~IFEF_QOSMARKING_ENABLED;
+ if_set_qosmarking_mode(ifp, IFRTYPE_QOSMARKING_MODE_NONE);
+
+ ifnet_lock_done(ifp);
+
+#if PF
+ /*
+ * Detach this interface from packet filter, if enabled.
+ */
+ pf_ifnet_hook(ifp, 0);
+#endif /* PF */
+
+ /* Filter list should be empty */
+ lck_mtx_lock_spin(&ifp->if_flt_lock);
+ VERIFY(TAILQ_EMPTY(&ifp->if_flt_head));
+ VERIFY(ifp->if_flt_busy == 0);
+ VERIFY(ifp->if_flt_waiters == 0);
+ lck_mtx_unlock(&ifp->if_flt_lock);
+
+ /* Last chance to drain send queue */
+ if_qflush(ifp, 0);
+
+ /* Last chance to cleanup any cached route */
+ lck_mtx_lock(&ifp->if_cached_route_lock);
+ VERIFY(!ifp->if_fwd_cacheok);
+ ROUTE_RELEASE(&ifp->if_fwd_route);
+ bzero(&ifp->if_fwd_route, sizeof (ifp->if_fwd_route));
+ ROUTE_RELEASE(&ifp->if_src_route);
+ bzero(&ifp->if_src_route, sizeof (ifp->if_src_route));
+ ROUTE_RELEASE(&ifp->if_src_route6);
+ bzero(&ifp->if_src_route6, sizeof (ifp->if_src_route6));
+ lck_mtx_unlock(&ifp->if_cached_route_lock);
+
+ VERIFY(ifp->if_data_threshold == 0);
+
+ ifnet_llreach_ifdetach(ifp);
+
+ dlil_post_msg(ifp, KEV_DL_SUBCLASS, KEV_DL_IF_DETACHED, NULL, 0);
+
+ /*
+ * Finally, mark this ifnet as detached.
+ */
+ lck_mtx_lock_spin(&ifp->if_ref_lock);
+ if (!(ifp->if_refflags & IFRF_DETACHING)) {
+ panic("%s: flags mismatch (detaching not set) ifp=%p",
+ __func__, ifp);
+ /* NOTREACHED */
+ }
+ ifp->if_refflags &= ~IFRF_DETACHING;
+ lck_mtx_unlock(&ifp->if_ref_lock);
+ if (if_free != NULL)
+ if_free(ifp);
+
+ if (dlil_verbose)
+ printf("%s: detached\n", if_name(ifp));
+
+ /* Release reference held during ifnet attach */
+ ifnet_release(ifp);
+}
+
+static errno_t
+ifp_if_output(struct ifnet *ifp, struct mbuf *m)
+{
+#pragma unused(ifp)
+ m_freem_list(m);
+ return (0);
+}
+
+static void
+ifp_if_start(struct ifnet *ifp)
+{
+ ifnet_purge(ifp);
+}
+
+static errno_t
+ifp_if_input(struct ifnet *ifp, struct mbuf *m_head,
+ struct mbuf *m_tail, const struct ifnet_stat_increment_param *s,
+ boolean_t poll, struct thread *tp)
+{
+#pragma unused(ifp, m_tail, s, poll, tp)
+ m_freem_list(m_head);
+ return (ENXIO);
+}
+
+static void
+ifp_if_input_poll(struct ifnet *ifp, u_int32_t flags, u_int32_t max_cnt,
+ struct mbuf **m_head, struct mbuf **m_tail, u_int32_t *cnt, u_int32_t *len)
+{
+#pragma unused(ifp, flags, max_cnt)
+ if (m_head != NULL)
+ *m_head = NULL;
+ if (m_tail != NULL)
+ *m_tail = NULL;
+ if (cnt != NULL)
+ *cnt = 0;
+ if (len != NULL)
+ *len = 0;
+}
+
+static errno_t
+ifp_if_ctl(struct ifnet *ifp, ifnet_ctl_cmd_t cmd, u_int32_t arglen, void *arg)
+{
+#pragma unused(ifp, cmd, arglen, arg)
+ return (EOPNOTSUPP);
+}
+
+static errno_t
+ifp_if_demux(struct ifnet *ifp, struct mbuf *m, char *fh, protocol_family_t *pf)
+{
+#pragma unused(ifp, fh, pf)
+ m_freem(m);
+ return (EJUSTRETURN);
+}
+
+static errno_t
+ifp_if_add_proto(struct ifnet *ifp, protocol_family_t pf,
+ const struct ifnet_demux_desc *da, u_int32_t dc)
+{
+#pragma unused(ifp, pf, da, dc)
+ return (EINVAL);
+}
+
+static errno_t
+ifp_if_del_proto(struct ifnet *ifp, protocol_family_t pf)
+{
+#pragma unused(ifp, pf)
+ return (EINVAL);
+}
+
+static errno_t
+ifp_if_check_multi(struct ifnet *ifp, const struct sockaddr *sa)
+{
+#pragma unused(ifp, sa)
+ return (EOPNOTSUPP);
+}
+
+static errno_t
+ifp_if_framer(struct ifnet *ifp, struct mbuf **m,
+ const struct sockaddr *sa, const char *ll, const char *t)
+{
+#pragma unused(ifp, m, sa, ll, t)
+ return (ifp_if_framer_extended(ifp, m, sa, ll, t, NULL, NULL));
+}
+
+static errno_t
+ifp_if_framer_extended(struct ifnet *ifp, struct mbuf **m,
+ const struct sockaddr *sa, const char *ll, const char *t,
+ u_int32_t *pre, u_int32_t *post)
+{
+#pragma unused(ifp, sa, ll, t)
+ m_freem(*m);
+ *m = NULL;
+
+ if (pre != NULL)
+ *pre = 0;
+ if (post != NULL)
+ *post = 0;
+
+ return (EJUSTRETURN);
+}
+
+errno_t
+ifp_if_ioctl(struct ifnet *ifp, unsigned long cmd, void *arg)
+{
+#pragma unused(ifp, cmd, arg)
+ return (EOPNOTSUPP);
+}
+
+static errno_t
+ifp_if_set_bpf_tap(struct ifnet *ifp, bpf_tap_mode tm, bpf_packet_func f)
+{
+#pragma unused(ifp, tm, f)
+ /* XXX not sure what to do here */
+ return (0);
+}
+
+static void
+ifp_if_free(struct ifnet *ifp)
+{
+#pragma unused(ifp)
+}
+
+static void
+ifp_if_event(struct ifnet *ifp, const struct kev_msg *e)
+{
+#pragma unused(ifp, e)
+}
+
+__private_extern__
+int dlil_if_acquire(u_int32_t family, const void *uniqueid,
+ size_t uniqueid_len, struct ifnet **ifp)
+{
+ struct ifnet *ifp1 = NULL;
+ struct dlil_ifnet *dlifp1 = NULL;
+ void *buf, *base, **pbuf;
+ int ret = 0;
+
+ dlil_if_lock();
+ TAILQ_FOREACH(dlifp1, &dlil_ifnet_head, dl_if_link) {
+ ifp1 = (struct ifnet *)dlifp1;
+
+ if (ifp1->if_family != family)
+ continue;
+
+ lck_mtx_lock(&dlifp1->dl_if_lock);
+ /* same uniqueid and same len or no unique id specified */
+ if ((uniqueid_len == dlifp1->dl_if_uniqueid_len) &&
+ bcmp(uniqueid, dlifp1->dl_if_uniqueid, uniqueid_len) == 0) {
+ /* check for matching interface in use */
+ if (dlifp1->dl_if_flags & DLIF_INUSE) {
+ if (uniqueid_len) {
+ ret = EBUSY;
+ lck_mtx_unlock(&dlifp1->dl_if_lock);
+ goto end;
+ }
+ } else {
+ dlifp1->dl_if_flags |= (DLIF_INUSE|DLIF_REUSE);
+ lck_mtx_unlock(&dlifp1->dl_if_lock);
+ *ifp = ifp1;
+ goto end;
+ }
+ }
+ lck_mtx_unlock(&dlifp1->dl_if_lock);
+ }
+
+ /* no interface found, allocate a new one */
+ buf = zalloc(dlif_zone);
+ if (buf == NULL) {
+ ret = ENOMEM;
+ goto end;
+ }
+ bzero(buf, dlif_bufsize);
+
+ /* Get the 64-bit aligned base address for this object */
+ base = (void *)P2ROUNDUP((intptr_t)buf + sizeof (u_int64_t),
+ sizeof (u_int64_t));
+ VERIFY(((intptr_t)base + dlif_size) <= ((intptr_t)buf + dlif_bufsize));
+
+ /*
+ * Wind back a pointer size from the aligned base and
+ * save the original address so we can free it later.
+ */
+ pbuf = (void **)((intptr_t)base - sizeof (void *));
+ *pbuf = buf;
+ dlifp1 = base;
+
+ if (uniqueid_len) {
+ MALLOC(dlifp1->dl_if_uniqueid, void *, uniqueid_len,
+ M_NKE, M_WAITOK);
+ if (dlifp1->dl_if_uniqueid == NULL) {
+ zfree(dlif_zone, dlifp1);
+ ret = ENOMEM;
+ goto end;
+ }
+ bcopy(uniqueid, dlifp1->dl_if_uniqueid, uniqueid_len);
+ dlifp1->dl_if_uniqueid_len = uniqueid_len;
+ }
+
+ ifp1 = (struct ifnet *)dlifp1;
+ dlifp1->dl_if_flags = DLIF_INUSE;
+ if (ifnet_debug) {
+ dlifp1->dl_if_flags |= DLIF_DEBUG;
+ dlifp1->dl_if_trace = dlil_if_trace;
+ }
+ ifp1->if_name = dlifp1->dl_if_namestorage;
+ ifp1->if_xname = dlifp1->dl_if_xnamestorage;
+
+ /* initialize interface description */
+ ifp1->if_desc.ifd_maxlen = IF_DESCSIZE;
+ ifp1->if_desc.ifd_len = 0;
+ ifp1->if_desc.ifd_desc = dlifp1->dl_if_descstorage;
+
+#if CONFIG_MACF_NET
+ mac_ifnet_label_init(ifp1);
+#endif
+
+ if ((ret = dlil_alloc_local_stats(ifp1)) != 0) {
+ DLIL_PRINTF("%s: failed to allocate if local stats, "
+ "error: %d\n", __func__, ret);
+ /* This probably shouldn't be fatal */
+ ret = 0;
+ }
+
+ lck_mtx_init(&dlifp1->dl_if_lock, ifnet_lock_group, ifnet_lock_attr);
+ lck_rw_init(&ifp1->if_lock, ifnet_lock_group, ifnet_lock_attr);
+ lck_mtx_init(&ifp1->if_ref_lock, ifnet_lock_group, ifnet_lock_attr);
+ lck_mtx_init(&ifp1->if_flt_lock, ifnet_lock_group, ifnet_lock_attr);
+ lck_mtx_init(&ifp1->if_addrconfig_lock, ifnet_lock_group,
+ ifnet_lock_attr);
+ lck_rw_init(&ifp1->if_llreach_lock, ifnet_lock_group, ifnet_lock_attr);
+#if INET
+ lck_rw_init(&ifp1->if_inetdata_lock, ifnet_lock_group,
+ ifnet_lock_attr);
+ ifp1->if_inetdata = NULL;
+#endif
+#if INET6
+ lck_rw_init(&ifp1->if_inet6data_lock, ifnet_lock_group,
+ ifnet_lock_attr);
+ ifp1->if_inet6data = NULL;
+#endif
+ lck_rw_init(&ifp1->if_link_status_lock, ifnet_lock_group,
+ ifnet_lock_attr);
+ ifp1->if_link_status = NULL;
+
+ /* for send data paths */
+ lck_mtx_init(&ifp1->if_start_lock, ifnet_snd_lock_group,
+ ifnet_lock_attr);
+ lck_mtx_init(&ifp1->if_cached_route_lock, ifnet_snd_lock_group,
+ ifnet_lock_attr);
+ lck_mtx_init(&ifp1->if_snd.ifcq_lock, ifnet_snd_lock_group,
+ ifnet_lock_attr);
+
+ /* for receive data paths */
+ lck_mtx_init(&ifp1->if_poll_lock, ifnet_rcv_lock_group,
+ ifnet_lock_attr);
+
+ TAILQ_INSERT_TAIL(&dlil_ifnet_head, dlifp1, dl_if_link);
+
+ *ifp = ifp1;
+
+end:
+ dlil_if_unlock();
+
+ VERIFY(dlifp1 == NULL || (IS_P2ALIGNED(dlifp1, sizeof (u_int64_t)) &&
+ IS_P2ALIGNED(&ifp1->if_data, sizeof (u_int64_t))));
+
+ return (ret);
+}
+
+__private_extern__ void
+dlil_if_release(ifnet_t ifp)
+{
+ struct dlil_ifnet *dlifp = (struct dlil_ifnet *)ifp;
+
+ ifnet_lock_exclusive(ifp);
+ lck_mtx_lock(&dlifp->dl_if_lock);
+ dlifp->dl_if_flags &= ~DLIF_INUSE;
+ strlcpy(dlifp->dl_if_namestorage, ifp->if_name, IFNAMSIZ);
+ ifp->if_name = dlifp->dl_if_namestorage;
+ /* Reset external name (name + unit) */
+ ifp->if_xname = dlifp->dl_if_xnamestorage;
+ snprintf(__DECONST(char *, ifp->if_xname), IFXNAMSIZ,
+ "%s?", ifp->if_name);
+ lck_mtx_unlock(&dlifp->dl_if_lock);
+#if CONFIG_MACF_NET
+ /*
+ * We can either recycle the MAC label here or in dlil_if_acquire().
+ * It seems logical to do it here but this means that anything that
+ * still has a handle on ifp will now see it as unlabeled.
+ * Since the interface is "dead" that may be OK. Revisit later.
+ */
+ mac_ifnet_label_recycle(ifp);
+#endif
+ ifnet_lock_done(ifp);
+}
+
+__private_extern__ void
+dlil_if_lock(void)
+{
+ lck_mtx_lock(&dlil_ifnet_lock);
+}
+
+__private_extern__ void
+dlil_if_unlock(void)
+{
+ lck_mtx_unlock(&dlil_ifnet_lock);
+}
+
+__private_extern__ void
+dlil_if_lock_assert(void)
+{
+ lck_mtx_assert(&dlil_ifnet_lock, LCK_MTX_ASSERT_OWNED);
+}
+
+__private_extern__ void
+dlil_proto_unplumb_all(struct ifnet *ifp)
+{
+ /*
+ * if_proto_hash[0-2] are for PF_INET, PF_INET6 and PF_VLAN, where
+ * each bucket contains exactly one entry; PF_VLAN does not need an
+ * explicit unplumb.
+ *
+ * if_proto_hash[3] is for other protocols; we expect anything
+ * in this bucket to respond to the DETACHING event (which would
+ * have happened by now) and do the unplumb then.
+ */
+ (void) proto_unplumb(PF_INET, ifp);
+#if INET6
+ (void) proto_unplumb(PF_INET6, ifp);
+#endif /* INET6 */
+}
+
+static void
+ifp_src_route_copyout(struct ifnet *ifp, struct route *dst)
+{
+ lck_mtx_lock_spin(&ifp->if_cached_route_lock);
+ lck_mtx_convert_spin(&ifp->if_cached_route_lock);
+
+ route_copyout(dst, &ifp->if_src_route, sizeof (*dst));
+
+ lck_mtx_unlock(&ifp->if_cached_route_lock);
+}
+
+static void
+ifp_src_route_copyin(struct ifnet *ifp, struct route *src)
+{
+ lck_mtx_lock_spin(&ifp->if_cached_route_lock);
+ lck_mtx_convert_spin(&ifp->if_cached_route_lock);
+
+ if (ifp->if_fwd_cacheok) {
+ route_copyin(src, &ifp->if_src_route, sizeof (*src));
+ } else {
+ ROUTE_RELEASE(src);
+ }
+ lck_mtx_unlock(&ifp->if_cached_route_lock);
+}
+
+#if INET6
+static void
+ifp_src_route6_copyout(struct ifnet *ifp, struct route_in6 *dst)
+{
+ lck_mtx_lock_spin(&ifp->if_cached_route_lock);
+ lck_mtx_convert_spin(&ifp->if_cached_route_lock);
+
+ route_copyout((struct route *)dst, (struct route *)&ifp->if_src_route6,
+ sizeof (*dst));
+
+ lck_mtx_unlock(&ifp->if_cached_route_lock);
+}
+
+static void
+ifp_src_route6_copyin(struct ifnet *ifp, struct route_in6 *src)
+{
+ lck_mtx_lock_spin(&ifp->if_cached_route_lock);
+ lck_mtx_convert_spin(&ifp->if_cached_route_lock);
+
+ if (ifp->if_fwd_cacheok) {
+ route_copyin((struct route *)src,
+ (struct route *)&ifp->if_src_route6, sizeof (*src));
+ } else {
+ ROUTE_RELEASE(src);
+ }
+ lck_mtx_unlock(&ifp->if_cached_route_lock);
+}
+#endif /* INET6 */
+
+struct rtentry *
+ifnet_cached_rtlookup_inet(struct ifnet *ifp, struct in_addr src_ip)
+{
+ struct route src_rt;
+ struct sockaddr_in *dst;
+
+ dst = (struct sockaddr_in *)(void *)(&src_rt.ro_dst);
+
+ ifp_src_route_copyout(ifp, &src_rt);
+
+ if (ROUTE_UNUSABLE(&src_rt) || src_ip.s_addr != dst->sin_addr.s_addr) {
+ ROUTE_RELEASE(&src_rt);
+ if (dst->sin_family != AF_INET) {
+ bzero(&src_rt.ro_dst, sizeof (src_rt.ro_dst));
+ dst->sin_len = sizeof (src_rt.ro_dst);
+ dst->sin_family = AF_INET;
+ }
+ dst->sin_addr = src_ip;
+
+ if (src_rt.ro_rt == NULL) {
+ src_rt.ro_rt = rtalloc1_scoped((struct sockaddr *)dst,
+ 0, 0, ifp->if_index);
+
+ if (src_rt.ro_rt != NULL) {
+ /* retain a ref, copyin consumes one */
+ struct rtentry *rte = src_rt.ro_rt;
+ RT_ADDREF(rte);
+ ifp_src_route_copyin(ifp, &src_rt);
+ src_rt.ro_rt = rte;
+ }
+ }
+ }
+
+ return (src_rt.ro_rt);
+}
+
+#if INET6
+struct rtentry *
+ifnet_cached_rtlookup_inet6(struct ifnet *ifp, struct in6_addr *src_ip6)
+{
+ struct route_in6 src_rt;
+
+ ifp_src_route6_copyout(ifp, &src_rt);
+
+ if (ROUTE_UNUSABLE(&src_rt) ||
+ !IN6_ARE_ADDR_EQUAL(src_ip6, &src_rt.ro_dst.sin6_addr)) {
+ ROUTE_RELEASE(&src_rt);
+ if (src_rt.ro_dst.sin6_family != AF_INET6) {
+ bzero(&src_rt.ro_dst, sizeof (src_rt.ro_dst));
+ src_rt.ro_dst.sin6_len = sizeof (src_rt.ro_dst);
+ src_rt.ro_dst.sin6_family = AF_INET6;
+ }
+ src_rt.ro_dst.sin6_scope_id = in6_addr2scopeid(ifp, src_ip6);
+ bcopy(src_ip6, &src_rt.ro_dst.sin6_addr,
+ sizeof (src_rt.ro_dst.sin6_addr));
+
+ if (src_rt.ro_rt == NULL) {
+ src_rt.ro_rt = rtalloc1_scoped(
+ (struct sockaddr *)&src_rt.ro_dst, 0, 0,
+ ifp->if_index);
+
+ if (src_rt.ro_rt != NULL) {
+ /* retain a ref, copyin consumes one */
+ struct rtentry *rte = src_rt.ro_rt;
+ RT_ADDREF(rte);
+ ifp_src_route6_copyin(ifp, &src_rt);
+ src_rt.ro_rt = rte;
+ }
+ }
+ }
+
+ return (src_rt.ro_rt);
+}
+#endif /* INET6 */
+
+void
+if_lqm_update(struct ifnet *ifp, int lqm, int locked)
+{
+ struct kev_dl_link_quality_metric_data ev_lqm_data;
+
+ VERIFY(lqm >= IFNET_LQM_MIN && lqm <= IFNET_LQM_MAX);
+
+ /* Normalize to edge */
+ if (lqm >= 0 && lqm <= IFNET_LQM_THRESH_BAD)
+ lqm = IFNET_LQM_THRESH_BAD;
+ else if (lqm > IFNET_LQM_THRESH_BAD && lqm <= IFNET_LQM_THRESH_POOR)
+ lqm = IFNET_LQM_THRESH_POOR;
+ else if (lqm > IFNET_LQM_THRESH_POOR && lqm <= IFNET_LQM_THRESH_GOOD)
+ lqm = IFNET_LQM_THRESH_GOOD;
+
+ /*
+ * Take the lock if needed
+ */
+ if (!locked)
+ ifnet_lock_exclusive(ifp);
+
+ if (lqm == ifp->if_interface_state.lqm_state &&
+ (ifp->if_interface_state.valid_bitmask &
+ IF_INTERFACE_STATE_LQM_STATE_VALID)) {
+ /*
+ * Release the lock if was not held by the caller
+ */
+ if (!locked)
+ ifnet_lock_done(ifp);
+ return; /* nothing to update */
+ }
+ ifp->if_interface_state.valid_bitmask |=
+ IF_INTERFACE_STATE_LQM_STATE_VALID;
+ ifp->if_interface_state.lqm_state = lqm;
+
+ /*
+ * Don't want to hold the lock when issuing kernel events
+ */
+ ifnet_lock_done(ifp);
+
+ bzero(&ev_lqm_data, sizeof (ev_lqm_data));
+ ev_lqm_data.link_quality_metric = lqm;
+
+ dlil_post_msg(ifp, KEV_DL_SUBCLASS, KEV_DL_LINK_QUALITY_METRIC_CHANGED,
+ (struct net_event_data *)&ev_lqm_data, sizeof (ev_lqm_data));
+
+ /*
+ * Reacquire the lock for the caller
+ */
+ if (locked)
+ ifnet_lock_exclusive(ifp);
+}
+
+static void
+if_rrc_state_update(struct ifnet *ifp, unsigned int rrc_state)
+{
+ struct kev_dl_rrc_state kev;
+
+ if (rrc_state == ifp->if_interface_state.rrc_state &&
+ (ifp->if_interface_state.valid_bitmask &
+ IF_INTERFACE_STATE_RRC_STATE_VALID))
+ return;
+
+ ifp->if_interface_state.valid_bitmask |=
+ IF_INTERFACE_STATE_RRC_STATE_VALID;
+
+ ifp->if_interface_state.rrc_state = rrc_state;
+
+ /*
+ * Don't want to hold the lock when issuing kernel events
+ */
+ ifnet_lock_done(ifp);
+
+ bzero(&kev, sizeof(struct kev_dl_rrc_state));
+ kev.rrc_state = rrc_state;
+
+ dlil_post_msg(ifp, KEV_DL_SUBCLASS, KEV_DL_RRC_STATE_CHANGED,
+ (struct net_event_data *)&kev, sizeof(struct kev_dl_rrc_state));
+
+ ifnet_lock_exclusive(ifp);
+}
+
+errno_t
+if_state_update(struct ifnet *ifp,
+ struct if_interface_state *if_interface_state)
+{
+ u_short if_index_available = 0;
+
+ ifnet_lock_exclusive(ifp);
+
+ if ((ifp->if_type != IFT_CELLULAR) &&
+ (if_interface_state->valid_bitmask &
+ IF_INTERFACE_STATE_RRC_STATE_VALID)) {
+ ifnet_lock_done(ifp);
+ return (ENOTSUP);
+ }
+ if ((if_interface_state->valid_bitmask &
+ IF_INTERFACE_STATE_LQM_STATE_VALID) &&
+ (if_interface_state->lqm_state < IFNET_LQM_MIN ||
+ if_interface_state->lqm_state > IFNET_LQM_MAX)) {
+ ifnet_lock_done(ifp);
+ return (EINVAL);
+ }
+ if ((if_interface_state->valid_bitmask &
+ IF_INTERFACE_STATE_RRC_STATE_VALID) &&
+ if_interface_state->rrc_state !=
+ IF_INTERFACE_STATE_RRC_STATE_IDLE &&
+ if_interface_state->rrc_state !=
+ IF_INTERFACE_STATE_RRC_STATE_CONNECTED) {
+ ifnet_lock_done(ifp);
+ return (EINVAL);
+ }
+
+ if (if_interface_state->valid_bitmask &
+ IF_INTERFACE_STATE_LQM_STATE_VALID) {
+ if_lqm_update(ifp, if_interface_state->lqm_state, 1);
+ }
+ if (if_interface_state->valid_bitmask &
+ IF_INTERFACE_STATE_RRC_STATE_VALID) {
+ if_rrc_state_update(ifp, if_interface_state->rrc_state);
+ }
+ if (if_interface_state->valid_bitmask &
+ IF_INTERFACE_STATE_INTERFACE_AVAILABILITY_VALID) {
+ ifp->if_interface_state.valid_bitmask |=
+ IF_INTERFACE_STATE_INTERFACE_AVAILABILITY_VALID;
+ ifp->if_interface_state.interface_availability =
+ if_interface_state->interface_availability;
+
+ if (ifp->if_interface_state.interface_availability ==
+ IF_INTERFACE_STATE_INTERFACE_AVAILABLE) {
+ if_index_available = ifp->if_index;
+ }
+ }
+ ifnet_lock_done(ifp);
+
+ /*
+ * Check if the TCP connections going on this interface should be
+ * forced to send probe packets instead of waiting for TCP timers
+ * to fire. This will be done when there is an explicit
+ * notification that the interface became available.
+ */
+ if (if_index_available > 0)
+ tcp_interface_send_probe(if_index_available);
+
+ return (0);
+}
+
+void
+if_get_state(struct ifnet *ifp,
+ struct if_interface_state *if_interface_state)
+{
+ ifnet_lock_shared(ifp);
+
+ if_interface_state->valid_bitmask = 0;
+
+ if (ifp->if_interface_state.valid_bitmask &
+ IF_INTERFACE_STATE_RRC_STATE_VALID) {
+ if_interface_state->valid_bitmask |=
+ IF_INTERFACE_STATE_RRC_STATE_VALID;
+ if_interface_state->rrc_state =
+ ifp->if_interface_state.rrc_state;
+ }
+ if (ifp->if_interface_state.valid_bitmask &
+ IF_INTERFACE_STATE_LQM_STATE_VALID) {
+ if_interface_state->valid_bitmask |=
+ IF_INTERFACE_STATE_LQM_STATE_VALID;
+ if_interface_state->lqm_state =
+ ifp->if_interface_state.lqm_state;
+ }
+ if (ifp->if_interface_state.valid_bitmask &
+ IF_INTERFACE_STATE_INTERFACE_AVAILABILITY_VALID) {
+ if_interface_state->valid_bitmask |=
+ IF_INTERFACE_STATE_INTERFACE_AVAILABILITY_VALID;
+ if_interface_state->interface_availability =
+ ifp->if_interface_state.interface_availability;
+ }
+
+ ifnet_lock_done(ifp);
+}
+
+errno_t
+if_probe_connectivity(struct ifnet *ifp, u_int32_t conn_probe)
+{
+ ifnet_lock_exclusive(ifp);
+ if (conn_probe > 1) {
+ ifnet_lock_done(ifp);
+ return (EINVAL);
+ }
+ if (conn_probe == 0)
+ ifp->if_eflags &= ~IFEF_PROBE_CONNECTIVITY;
+ else
+ ifp->if_eflags |= IFEF_PROBE_CONNECTIVITY;
+ ifnet_lock_done(ifp);
+
+ tcp_probe_connectivity(ifp, conn_probe);
+ return (0);
+}
+
+/* for uuid.c */
+int
+uuid_get_ethernet(u_int8_t *node)
+{
+ struct ifnet *ifp;
+ struct sockaddr_dl *sdl;
+
+ ifnet_head_lock_shared();
+ TAILQ_FOREACH(ifp, &ifnet_head, if_link) {
+ ifnet_lock_shared(ifp);
+ IFA_LOCK_SPIN(ifp->if_lladdr);
+ sdl = (struct sockaddr_dl *)(void *)ifp->if_lladdr->ifa_addr;
+ if (sdl->sdl_type == IFT_ETHER) {
+ memcpy(node, LLADDR(sdl), ETHER_ADDR_LEN);
+ IFA_UNLOCK(ifp->if_lladdr);
+ ifnet_lock_done(ifp);
+ ifnet_head_done();
+ return (0);
+ }
+ IFA_UNLOCK(ifp->if_lladdr);
+ ifnet_lock_done(ifp);
+ }
+ ifnet_head_done();
+
+ return (-1);
+}
+
+static int
+sysctl_rxpoll SYSCTL_HANDLER_ARGS
+{
+#pragma unused(arg1, arg2)
+ uint32_t i;
+ int err;
+
+ i = if_rxpoll;
+
+ err = sysctl_handle_int(oidp, &i, 0, req);
+ if (err != 0 || req->newptr == USER_ADDR_NULL)
+ return (err);
+
+ if (net_rxpoll == 0)
+ return (ENXIO);
+
+ if_rxpoll = i;
+ return (err);
+}
+
+static int
+sysctl_rxpoll_mode_holdtime SYSCTL_HANDLER_ARGS
+{
+#pragma unused(arg1, arg2)
+ uint64_t q;
+ int err;
+
+ q = if_rxpoll_mode_holdtime;
+
+ err = sysctl_handle_quad(oidp, &q, 0, req);
+ if (err != 0 || req->newptr == USER_ADDR_NULL)
+ return (err);
+
+ if (q < IF_RXPOLL_MODE_HOLDTIME_MIN)
+ q = IF_RXPOLL_MODE_HOLDTIME_MIN;
+
+ if_rxpoll_mode_holdtime = q;
+
+ return (err);
+}
+
+static int
+sysctl_rxpoll_sample_holdtime SYSCTL_HANDLER_ARGS
+{
+#pragma unused(arg1, arg2)
+ uint64_t q;
+ int err;
+
+ q = if_rxpoll_sample_holdtime;
+
+ err = sysctl_handle_quad(oidp, &q, 0, req);
+ if (err != 0 || req->newptr == USER_ADDR_NULL)
+ return (err);
+
+ if (q < IF_RXPOLL_SAMPLETIME_MIN)
+ q = IF_RXPOLL_SAMPLETIME_MIN;
+
+ if_rxpoll_sample_holdtime = q;
+
+ return (err);
+}
+
+static int
+sysctl_rxpoll_interval_time SYSCTL_HANDLER_ARGS
+{
+#pragma unused(arg1, arg2)
+ uint64_t q;
+ int err;
+
+ q = if_rxpoll_interval_time;
+
+ err = sysctl_handle_quad(oidp, &q, 0, req);
+ if (err != 0 || req->newptr == USER_ADDR_NULL)
+ return (err);
+
+ if (q < IF_RXPOLL_INTERVALTIME_MIN)
+ q = IF_RXPOLL_INTERVALTIME_MIN;
+
+ if_rxpoll_interval_time = q;
+
+ return (err);
+}
+
+static int
+sysctl_rxpoll_wlowat SYSCTL_HANDLER_ARGS
+{
+#pragma unused(arg1, arg2)
+ uint32_t i;
+ int err;
+
+ i = if_rxpoll_wlowat;
+
+ err = sysctl_handle_int(oidp, &i, 0, req);
+ if (err != 0 || req->newptr == USER_ADDR_NULL)
+ return (err);
+
+ if (i == 0 || i >= if_rxpoll_whiwat)
+ return (EINVAL);
+
+ if_rxpoll_wlowat = i;
+ return (err);
+}
+
+static int
+sysctl_rxpoll_whiwat SYSCTL_HANDLER_ARGS
+{
+#pragma unused(arg1, arg2)
+ uint32_t i;
+ int err;
+
+ i = if_rxpoll_whiwat;
- TAILQ_FOREACH(filter, fhead, que) {
- if (IFILT(filter).filter_if_free) {
- retval = (*IFILT(filter).filter_if_free)(IFILT(filter).cookie, ifp);
- if (retval) {
- splx(s);
- thread_funnel_set(network_flock, funnel_state);
- return 0;
- }
+ err = sysctl_handle_int(oidp, &i, 0, req);
+ if (err != 0 || req->newptr == USER_ADDR_NULL)
+ return (err);
+
+ if (i <= if_rxpoll_wlowat)
+ return (EINVAL);
+
+ if_rxpoll_whiwat = i;
+ return (err);
+}
+
+static int
+sysctl_sndq_maxlen SYSCTL_HANDLER_ARGS
+{
+#pragma unused(arg1, arg2)
+ int i, err;
+
+ i = if_sndq_maxlen;
+
+ err = sysctl_handle_int(oidp, &i, 0, req);
+ if (err != 0 || req->newptr == USER_ADDR_NULL)
+ return (err);
+
+ if (i < IF_SNDQ_MINLEN)
+ i = IF_SNDQ_MINLEN;
+
+ if_sndq_maxlen = i;
+ return (err);
+}
+
+static int
+sysctl_rcvq_maxlen SYSCTL_HANDLER_ARGS
+{
+#pragma unused(arg1, arg2)
+ int i, err;
+
+ i = if_rcvq_maxlen;
+
+ err = sysctl_handle_int(oidp, &i, 0, req);
+ if (err != 0 || req->newptr == USER_ADDR_NULL)
+ return (err);
+
+ if (i < IF_RCVQ_MINLEN)
+ i = IF_RCVQ_MINLEN;
+
+ if_rcvq_maxlen = i;
+ return (err);
+}
+
+void
+dlil_node_present(struct ifnet *ifp, struct sockaddr *sa,
+ int32_t rssi, int lqm, int npm, u_int8_t srvinfo[48])
+{
+ struct kev_dl_node_presence kev;
+ struct sockaddr_dl *sdl;
+ struct sockaddr_in6 *sin6;
+
+ VERIFY(ifp);
+ VERIFY(sa);
+ VERIFY(sa->sa_family == AF_LINK || sa->sa_family == AF_INET6);
+
+ bzero(&kev, sizeof (kev));
+ sin6 = &kev.sin6_node_address;
+ sdl = &kev.sdl_node_address;
+ nd6_alt_node_addr_decompose(ifp, sa, sdl, sin6);
+ kev.rssi = rssi;
+ kev.link_quality_metric = lqm;
+ kev.node_proximity_metric = npm;
+ bcopy(srvinfo, kev.node_service_info, sizeof (kev.node_service_info));
+
+ nd6_alt_node_present(ifp, sin6, sdl, rssi, lqm, npm);
+ dlil_post_msg(ifp, KEV_DL_SUBCLASS, KEV_DL_NODE_PRESENCE,
+ &kev.link_data, sizeof (kev));
+}
+
+void
+dlil_node_absent(struct ifnet *ifp, struct sockaddr *sa)
+{
+ struct kev_dl_node_absence kev;
+ struct sockaddr_in6 *sin6;
+ struct sockaddr_dl *sdl;
+
+ VERIFY(ifp);
+ VERIFY(sa);
+ VERIFY(sa->sa_family == AF_LINK || sa->sa_family == AF_INET6);
+
+ bzero(&kev, sizeof (kev));
+ sin6 = &kev.sin6_node_address;
+ sdl = &kev.sdl_node_address;
+ nd6_alt_node_addr_decompose(ifp, sa, sdl, sin6);
+
+ nd6_alt_node_absent(ifp, sin6);
+ dlil_post_msg(ifp, KEV_DL_SUBCLASS, KEV_DL_NODE_ABSENCE,
+ &kev.link_data, sizeof (kev));
+}
+
+const void *
+dlil_ifaddr_bytes(const struct sockaddr_dl *sdl, size_t *sizep,
+ kauth_cred_t *credp)
+{
+ const u_int8_t *bytes;
+ size_t size;
+
+ bytes = CONST_LLADDR(sdl);
+ size = sdl->sdl_alen;
+
+#if CONFIG_MACF
+ if (dlil_lladdr_ckreq) {
+ switch (sdl->sdl_type) {
+ case IFT_ETHER:
+ case IFT_IEEE1394:
+ break;
+ default:
+ credp = NULL;
+ break;
+ };
+
+ if (credp && mac_system_check_info(*credp, "net.link.addr")) {
+ static const u_int8_t unspec[FIREWIRE_EUI64_LEN] = {
+ [0] = 2
+ };
+
+ switch (sdl->sdl_type) {
+ case IFT_ETHER:
+ VERIFY(size == ETHER_ADDR_LEN);
+ bytes = unspec;
+ break;
+ case IFT_IEEE1394:
+ VERIFY(size == FIREWIRE_EUI64_LEN);
+ bytes = unspec;
+ break;
+ default:
+ VERIFY(FALSE);
+ break;
+ };
}
- if (ifp != orig_ifp)
- break;
- }
}
-
- dlil_post_msg(ifp, KEV_DL_SUBCLASS, KEV_DL_IF_DETACHED, 0, 0);
+#else
+#pragma unused(credp)
+#endif
+
+ if (sizep != NULL) *sizep = size;
+ return (bytes);
+}
+
+void
+dlil_report_issues(struct ifnet *ifp, u_int8_t modid[DLIL_MODIDLEN],
+ u_int8_t info[DLIL_MODARGLEN])
+{
+ struct kev_dl_issues kev;
+ struct timeval tv;
+
+ VERIFY(ifp != NULL);
+ VERIFY(modid != NULL);
+ _CASSERT(sizeof (kev.modid) == DLIL_MODIDLEN);
+ _CASSERT(sizeof (kev.info) == DLIL_MODARGLEN);
+
+ bzero(&kev, sizeof (kev));
- (*ifp->if_free)(ifp);
- }
+ microtime(&tv);
+ kev.timestamp = tv.tv_sec;
+ bcopy(modid, &kev.modid, DLIL_MODIDLEN);
+ if (info != NULL)
+ bcopy(info, &kev.info, DLIL_MODARGLEN);
- splx(s);
- thread_funnel_set(network_flock, funnel_state);
- return 0;
+ dlil_post_msg(ifp, KEV_DL_SUBCLASS, KEV_DL_ISSUES,
+ &kev.link_data, sizeof (kev));
}
+errno_t
+ifnet_getset_opportunistic(ifnet_t ifp, u_long cmd, struct ifreq *ifr,
+ struct proc *p)
+{
+ u_int32_t level = IFNET_THROTTLE_OFF;
+ errno_t result = 0;
+
+ VERIFY(cmd == SIOCSIFOPPORTUNISTIC || cmd == SIOCGIFOPPORTUNISTIC);
+
+ if (cmd == SIOCSIFOPPORTUNISTIC) {
+ /*
+ * XXX: Use priv_check_cred() instead of root check?
+ */
+ if ((result = proc_suser(p)) != 0)
+ return (result);
+
+ if (ifr->ifr_opportunistic.ifo_flags ==
+ IFRIFOF_BLOCK_OPPORTUNISTIC)
+ level = IFNET_THROTTLE_OPPORTUNISTIC;
+ else if (ifr->ifr_opportunistic.ifo_flags == 0)
+ level = IFNET_THROTTLE_OFF;
+ else
+ result = EINVAL;
+
+ if (result == 0)
+ result = ifnet_set_throttle(ifp, level);
+ } else if ((result = ifnet_get_throttle(ifp, &level)) == 0) {
+ ifr->ifr_opportunistic.ifo_flags = 0;
+ if (level == IFNET_THROTTLE_OPPORTUNISTIC) {
+ ifr->ifr_opportunistic.ifo_flags |=
+ IFRIFOF_BLOCK_OPPORTUNISTIC;
+ }
+ }
+ /*
+ * Return the count of current opportunistic connections
+ * over the interface.
+ */
+ if (result == 0) {
+ uint32_t flags = 0;
+ flags |= (cmd == SIOCSIFOPPORTUNISTIC) ?
+ INPCB_OPPORTUNISTIC_SETCMD : 0;
+ flags |= (level == IFNET_THROTTLE_OPPORTUNISTIC) ?
+ INPCB_OPPORTUNISTIC_THROTTLEON : 0;
+ ifr->ifr_opportunistic.ifo_inuse =
+ udp_count_opportunistic(ifp->if_index, flags) +
+ tcp_count_opportunistic(ifp->if_index, flags);
+ }
+ if (result == EALREADY)
+ result = 0;
+ return (result);
+}
int
-dlil_if_attach(struct ifnet *ifp)
-{
- u_long interface_family = ifp->if_family;
- struct if_family_str *if_family;
- struct dlil_proto_head *tmp;
- int stat;
- int s;
- boolean_t funnel_state;
-
- funnel_state = thread_funnel_set(network_flock, TRUE);
- s = splnet();
- if (ifnet_inited == 0) {
- TAILQ_INIT(&ifnet);
- ifnet_inited = 1;
- }
-
- if_family = find_family_module(interface_family);
-
- if ((!if_family) || (if_family->flags & DLIL_SHUTDOWN)) {
- splx(s);
- kprintf("Attempt to attach interface without family module - %d\n",
- interface_family);
- thread_funnel_set(network_flock, funnel_state);
- return ENODEV;
- }
-
-
- /*
- * Call the family module to fill in the appropriate fields in the
- * ifnet structure.
- */
-
- stat = (*if_family->add_if)(ifp);
- if (stat) {
- splx(s);
- kprintf("dlil_if_attach -- add_if failed with %d\n", stat);
- thread_funnel_set(network_flock, funnel_state);
- return stat;
- }
-
- /*
- * Add the ifp to the interface list.
- */
-
- tmp = (struct dlil_proto_head *) &ifp->proto_head;
- TAILQ_INIT(tmp);
-
- ifp->if_data.default_proto = 0;
- ifp->refcnt = 1;
- ifp->offercnt = 0;
- TAILQ_INIT(&ifp->if_flt_head);
- old_if_attach(ifp);
- if_family->refcnt++;
-
- dlil_post_msg(ifp, KEV_DL_SUBCLASS, KEV_DL_IF_ATTACHED, 0, 0);
-
- splx(s);
- thread_funnel_set(network_flock, funnel_state);
- return 0;
-}
+ifnet_get_throttle(struct ifnet *ifp, u_int32_t *level)
+{
+ struct ifclassq *ifq;
+ int err = 0;
+
+ if (!(ifp->if_eflags & IFEF_TXSTART))
+ return (ENXIO);
+
+ *level = IFNET_THROTTLE_OFF;
+
+ ifq = &ifp->if_snd;
+ IFCQ_LOCK(ifq);
+ /* Throttling works only for IFCQ, not ALTQ instances */
+ if (IFCQ_IS_ENABLED(ifq))
+ IFCQ_GET_THROTTLE(ifq, *level, err);
+ IFCQ_UNLOCK(ifq);
+ return (err);
+}
int
-dlil_if_detach(struct ifnet *ifp)
-{
- struct if_proto *proto;
- struct dlil_filterq_entry *if_filter;
- struct if_family_str *if_family;
- struct dlil_filterq_head *fhead = (struct dlil_filterq_head *) &ifp->if_flt_head;
- int s;
- struct kev_msg ev_msg;
- boolean_t funnel_state;
-
- funnel_state = thread_funnel_set(network_flock, TRUE);
- s = splnet();
- if (ifp->if_flags & IFF_UP)
- printf("WARNING - dlil_if_detach called for UP interface\n");
-
- if_family = find_family_module(ifp->if_family);
-
- if (!if_family) {
- kprintf("Attempt to detach interface without family module - %s\n",
- ifp->if_name);
- splx(s);
- thread_funnel_set(network_flock, funnel_state);
- return ENODEV;
- }
-
- while (if_filter = TAILQ_FIRST(fhead))
- dlil_detach_filter(if_filter->filter_id);
-
- ifp->refcnt--;
-
- if (ifp->refcnt == 0 && (ifp->if_eflags & IFEF_DETACH_DISABLED) == 0) {
- TAILQ_REMOVE(&ifnet, ifp, if_link);
-
- (*if_family->del_if)(ifp);
-
- if (--if_family->refcnt == 0) {
- if (if_family->shutdown)
- (*if_family->shutdown)();
-
- TAILQ_REMOVE(&if_family_head, if_family, if_fam_next);
- FREE(if_family, M_IFADDR);
- }
-
- dlil_post_msg(ifp, KEV_DL_SUBCLASS, KEV_DL_IF_DETACHED, 0, 0);
- splx(s);
- thread_funnel_set(network_flock, funnel_state);
- return 0;
- }
- else
- {
- dlil_post_msg(ifp, KEV_DL_SUBCLASS, KEV_DL_IF_DETACHING, 0, 0);
- splx(s);
- thread_funnel_set(network_flock, funnel_state);
- return DLIL_WAIT_FOR_FREE;
- }
+ifnet_set_throttle(struct ifnet *ifp, u_int32_t level)
+{
+ struct ifclassq *ifq;
+ int err = 0;
+
+ if (!(ifp->if_eflags & IFEF_TXSTART))
+ return (ENXIO);
+
+ ifq = &ifp->if_snd;
+
+ switch (level) {
+ case IFNET_THROTTLE_OFF:
+ case IFNET_THROTTLE_OPPORTUNISTIC:
+#if PF_ALTQ
+ /* Throttling works only for IFCQ, not ALTQ instances */
+ if (ALTQ_IS_ENABLED(IFCQ_ALTQ(ifq)))
+ return (ENXIO);
+#endif /* PF_ALTQ */
+ break;
+ default:
+ return (EINVAL);
+ }
+
+ IFCQ_LOCK(ifq);
+ if (IFCQ_IS_ENABLED(ifq))
+ IFCQ_SET_THROTTLE(ifq, level, err);
+ IFCQ_UNLOCK(ifq);
+
+ if (err == 0) {
+ printf("%s: throttling level set to %d\n", if_name(ifp),
+ level);
+ if (level == IFNET_THROTTLE_OFF)
+ ifnet_start(ifp);
+ }
+
+ return (err);
}
+errno_t
+ifnet_getset_log(ifnet_t ifp, u_long cmd, struct ifreq *ifr,
+ struct proc *p)
+{
+#pragma unused(p)
+ errno_t result = 0;
+ uint32_t flags;
+ int level, category, subcategory;
+
+ VERIFY(cmd == SIOCSIFLOG || cmd == SIOCGIFLOG);
+
+ if (cmd == SIOCSIFLOG) {
+ if ((result = priv_check_cred(kauth_cred_get(),
+ PRIV_NET_INTERFACE_CONTROL, 0)) != 0)
+ return (result);
+
+ level = ifr->ifr_log.ifl_level;
+ if (level < IFNET_LOG_MIN || level > IFNET_LOG_MAX)
+ result = EINVAL;
+
+ flags = ifr->ifr_log.ifl_flags;
+ if ((flags &= IFNET_LOGF_MASK) == 0)
+ result = EINVAL;
+
+ category = ifr->ifr_log.ifl_category;
+ subcategory = ifr->ifr_log.ifl_subcategory;
+
+ if (result == 0)
+ result = ifnet_set_log(ifp, level, flags,
+ category, subcategory);
+ } else {
+ result = ifnet_get_log(ifp, &level, &flags, &category,
+ &subcategory);
+ if (result == 0) {
+ ifr->ifr_log.ifl_level = level;
+ ifr->ifr_log.ifl_flags = flags;
+ ifr->ifr_log.ifl_category = category;
+ ifr->ifr_log.ifl_subcategory = subcategory;
+ }
+ }
+
+ return (result);
+}
int
-dlil_reg_if_modules(u_long interface_family,
- struct dlil_ifmod_reg_str *ifmod)
-{
- struct if_family_str *if_family;
- int s;
- boolean_t funnel_state;
-
-
- funnel_state = thread_funnel_set(network_flock, TRUE);
- s = splnet();
- if (find_family_module(interface_family)) {
- kprintf("Attempt to register dlil family module more than once - %d\n",
- interface_family);
- splx(s);
- thread_funnel_set(network_flock, funnel_state);
- return EEXIST;
- }
-
- if ((!ifmod->add_if) || (!ifmod->del_if) ||
- (!ifmod->add_proto) || (!ifmod->del_proto)) {
- kprintf("dlil_reg_if_modules passed at least one null pointer\n");
- splx(s);
- thread_funnel_set(network_flock, funnel_state);
- return EINVAL;
- }
-
- if_family = (struct if_family_str *) _MALLOC(sizeof(struct if_family_str), M_IFADDR, M_WAITOK);
- if (!if_family) {
- kprintf("dlil_reg_if_modules failed allocation\n");
- splx(s);
- thread_funnel_set(network_flock, funnel_state);
- return ENOMEM;
- }
-
- bzero(if_family, sizeof(struct if_family_str));
-
- if_family->if_family = interface_family & 0xffff;
- if_family->shutdown = ifmod->shutdown;
- if_family->add_if = ifmod->add_if;
- if_family->del_if = ifmod->del_if;
- if_family->add_proto = ifmod->add_proto;
- if_family->del_proto = ifmod->del_proto;
- if_family->ifmod_ioctl = ifmod->ifmod_ioctl;
- if_family->refcnt = 1;
- if_family->flags = 0;
-
- TAILQ_INSERT_TAIL(&if_family_head, if_family, if_fam_next);
- splx(s);
- thread_funnel_set(network_flock, funnel_state);
- return 0;
-}
-
-int dlil_dereg_if_modules(u_long interface_family)
-{
- struct if_family_str *if_family;
- int s;
- boolean_t funnel_state;
-
- funnel_state = thread_funnel_set(network_flock, TRUE);
- s = splnet();
- if_family = find_family_module(interface_family);
- if (if_family == 0) {
- splx(s);
- thread_funnel_set(network_flock, funnel_state);
- return ENOENT;
- }
-
- if (--if_family->refcnt == 0) {
- if (if_family->shutdown)
- (*if_family->shutdown)();
-
- TAILQ_REMOVE(&if_family_head, if_family, if_fam_next);
- FREE(if_family, M_IFADDR);
- }
- else
- if_family->flags |= DLIL_SHUTDOWN;
-
- splx(s);
- thread_funnel_set(network_flock, funnel_state);
- return 0;
-}
-
-
+ifnet_set_log(struct ifnet *ifp, int32_t level, uint32_t flags,
+ int32_t category, int32_t subcategory)
+{
+ int err = 0;
+ VERIFY(level >= IFNET_LOG_MIN && level <= IFNET_LOG_MAX);
+ VERIFY(flags & IFNET_LOGF_MASK);
+
+ /*
+ * The logging level applies to all facilities; make sure to
+ * update them all with the most current level.
+ */
+ flags |= ifp->if_log.flags;
+
+ if (ifp->if_output_ctl != NULL) {
+ struct ifnet_log_params l;
+
+ bzero(&l, sizeof (l));
+ l.level = level;
+ l.flags = flags;
+ l.flags &= ~IFNET_LOGF_DLIL;
+ l.category = category;
+ l.subcategory = subcategory;
+
+ /* Send this request to lower layers */
+ if (l.flags != 0) {
+ err = ifp->if_output_ctl(ifp, IFNET_CTL_SET_LOG,
+ sizeof (l), &l);
+ }
+ } else if ((flags & ~IFNET_LOGF_DLIL) && ifp->if_output_ctl == NULL) {
+ /*
+ * If targeted to the lower layers without an output
+ * control callback registered on the interface, just
+ * silently ignore facilities other than ours.
+ */
+ flags &= IFNET_LOGF_DLIL;
+ if (flags == 0 && (!(ifp->if_log.flags & IFNET_LOGF_DLIL)))
+ level = 0;
+ }
+ if (err == 0) {
+ if ((ifp->if_log.level = level) == IFNET_LOG_DEFAULT)
+ ifp->if_log.flags = 0;
+ else
+ ifp->if_log.flags |= flags;
+
+ log(LOG_INFO, "%s: logging level set to %d flags=%b "
+ "arg=%b, category=%d subcategory=%d\n", if_name(ifp),
+ ifp->if_log.level, ifp->if_log.flags,
+ IFNET_LOGF_BITS, flags, IFNET_LOGF_BITS,
+ category, subcategory);
+ }
-/*
- * Old if_attach no-op'ed function defined here for temporary backwards compatibility
- */
+ return (err);
+}
-void if_attach(ifp)
- struct ifnet *ifp;
+int
+ifnet_get_log(struct ifnet *ifp, int32_t *level, uint32_t *flags,
+ int32_t *category, int32_t *subcategory)
{
- dlil_if_attach(ifp);
+ if (level != NULL)
+ *level = ifp->if_log.level;
+ if (flags != NULL)
+ *flags = ifp->if_log.flags;
+ if (category != NULL)
+ *category = ifp->if_log.category;
+ if (subcategory != NULL)
+ *subcategory = ifp->if_log.subcategory;
+
+ return (0);
}
+int
+ifnet_notify_address(struct ifnet *ifp, int af)
+{
+ struct ifnet_notify_address_params na;
+#if PF
+ (void) pf_ifaddr_hook(ifp);
+#endif /* PF */
-int
-dlil_inject_if_input(struct mbuf *m, char *frame_header, u_long from_id)
+ if (ifp->if_output_ctl == NULL)
+ return (EOPNOTSUPP);
+
+ bzero(&na, sizeof (na));
+ na.address_family = af;
+
+ return (ifp->if_output_ctl(ifp, IFNET_CTL_NOTIFY_ADDRESS,
+ sizeof (na), &na));
+}
+
+errno_t
+ifnet_flowid(struct ifnet *ifp, uint32_t *flowid)
{
- struct ifnet *orig_ifp = 0;
- struct ifnet *ifp;
- struct if_proto *ifproto;
- struct if_proto *proto;
- struct dlil_filterq_entry *tmp;
- int retval = 0;
- struct dlil_filterq_head *fhead;
- int match_found;
+ if (ifp == NULL || flowid == NULL) {
+ return (EINVAL);
+ } else if (!(ifp->if_eflags & IFEF_TXSTART) ||
+ !(ifp->if_refflags & IFRF_ATTACHED)) {
+ return (ENXIO);
+ }
+ *flowid = ifp->if_flowhash;
- dlil_stats.inject_if_in1++;
- if (from_id > MAX_DLIL_FILTERS)
- return ERANGE;
+ return (0);
+}
- if (dlil_filters[from_id].type != DLIL_IF_FILTER)
- return ENOENT;
+errno_t
+ifnet_disable_output(struct ifnet *ifp)
+{
+ int err;
- ifp = dlil_filters[from_id].ifp;
+ if (ifp == NULL) {
+ return (EINVAL);
+ } else if (!(ifp->if_eflags & IFEF_TXSTART) ||
+ !(ifp->if_refflags & IFRF_ATTACHED)) {
+ return (ENXIO);
+ }
-/*
- * Let interface filters (if any) do their thing ...
- */
+ if ((err = ifnet_fc_add(ifp)) == 0) {
+ lck_mtx_lock_spin(&ifp->if_start_lock);
+ ifp->if_start_flags |= IFSF_FLOW_CONTROLLED;
+ lck_mtx_unlock(&ifp->if_start_lock);
+ }
+ return (err);
+}
- fhead = (struct dlil_filterq_head *) &ifp->if_flt_head;
- match_found = 0;
-
- if (TAILQ_EMPTY(fhead) == 0) {
- while (orig_ifp != ifp) {
- orig_ifp = ifp;
- TAILQ_FOREACH_REVERSE(tmp, fhead, que, dlil_filterq_head) {
- if ((match_found) && (IFILT(tmp).filter_if_input)) {
- retval = (*IFILT(tmp).filter_if_input)(IFILT(tmp).cookie,
- &ifp,
- &m,
- &frame_header);
- if (retval) {
- if (retval == EJUSTRETURN)
- return 0;
- else {
- m_freem(m);
- return retval;
- }
- }
-
- }
-
- if (ifp != orig_ifp)
- break;
-
- if (from_id == tmp->filter_id)
- match_found = 1;
- }
- }
- }
-
- ifp->if_lastchange = time;
-
- /*
- * Call family demux module. If the demux module finds a match
- * for the frame it will fill-in the ifproto pointer.
- */
-
- retval = (*ifp->if_demux)(ifp, m, frame_header, &ifproto );
-
- if (m->m_flags & (M_BCAST|M_MCAST))
- ifp->if_imcasts++;
-
- if ((retval) && (ifp->offercnt)) {
- /*
- * No match was found, look for any offers.
- */
- struct dlil_proto_head *tmp = (struct dlil_proto_head *) &ifp->proto_head;
- TAILQ_FOREACH(proto, tmp, next) {
- if ((proto->dl_offer) && (proto->dl_offer(m, frame_header) == 0)) {
- ifproto = proto;
- retval = 0;
- break;
- }
+errno_t
+ifnet_enable_output(struct ifnet *ifp)
+{
+ if (ifp == NULL) {
+ return (EINVAL);
+ } else if (!(ifp->if_eflags & IFEF_TXSTART) ||
+ !(ifp->if_refflags & IFRF_ATTACHED)) {
+ return (ENXIO);
}
- }
- if (retval) {
- if (retval != EJUSTRETURN) {
- m_freem(m);
- return retval;
+ ifnet_start_common(ifp, 1);
+ return (0);
+}
+
+void
+ifnet_flowadv(uint32_t flowhash)
+{
+ struct ifnet_fc_entry *ifce;
+ struct ifnet *ifp;
+
+ ifce = ifnet_fc_get(flowhash);
+ if (ifce == NULL)
+ return;
+
+ VERIFY(ifce->ifce_ifp != NULL);
+ ifp = ifce->ifce_ifp;
+
+ /* flow hash gets recalculated per attach, so check */
+ if (ifnet_is_attached(ifp, 1)) {
+ if (ifp->if_flowhash == flowhash)
+ (void) ifnet_enable_output(ifp);
+ ifnet_decr_iorefcnt(ifp);
}
- else
- return 0;
- }
- else
- if (ifproto == 0) {
- printf("ERROR - dlil_inject_if_input -- if_demux didn't return an if_proto pointer\n");
- m_freem(m);
- return 0;
- }
-
+ ifnet_fc_entry_free(ifce);
+}
+
/*
- * Call any attached protocol filters.
+ * Function to compare ifnet_fc_entries in ifnet flow control tree
*/
- TAILQ_FOREACH_REVERSE(tmp, &ifproto->pr_flt_head, que, dlil_filterq_head) {
- if (PFILT(tmp).filter_dl_input) {
- retval = (*PFILT(tmp).filter_dl_input)(PFILT(tmp).cookie,
- &m,
- &frame_header,
- &ifp);
+static inline int
+ifce_cmp(const struct ifnet_fc_entry *fc1, const struct ifnet_fc_entry *fc2)
+{
+ return (fc1->ifce_flowhash - fc2->ifce_flowhash);
+}
- if (retval) {
- if (retval == EJUSTRETURN)
- return 0;
- else {
- m_freem(m);
- return retval;
- }
- }
- }
- }
+static int
+ifnet_fc_add(struct ifnet *ifp)
+{
+ struct ifnet_fc_entry keyfc, *ifce;
+ uint32_t flowhash;
+
+ VERIFY(ifp != NULL && (ifp->if_eflags & IFEF_TXSTART));
+ VERIFY(ifp->if_flowhash != 0);
+ flowhash = ifp->if_flowhash;
+
+ bzero(&keyfc, sizeof (keyfc));
+ keyfc.ifce_flowhash = flowhash;
+
+ lck_mtx_lock_spin(&ifnet_fc_lock);
+ ifce = RB_FIND(ifnet_fc_tree, &ifnet_fc_tree, &keyfc);
+ if (ifce != NULL && ifce->ifce_ifp == ifp) {
+ /* Entry is already in ifnet_fc_tree, return */
+ lck_mtx_unlock(&ifnet_fc_lock);
+ return (0);
+ }
+ if (ifce != NULL) {
+ /*
+ * There is a different fc entry with the same flow hash
+ * but different ifp pointer. There can be a collision
+ * on flow hash but the probability is low. Let's just
+ * avoid adding a second one when there is a collision.
+ */
+ lck_mtx_unlock(&ifnet_fc_lock);
+ return (EAGAIN);
+ }
+ /* become regular mutex */
+ lck_mtx_convert_spin(&ifnet_fc_lock);
- retval = (*ifproto->dl_input)(m, frame_header,
- ifp, ifproto->dl_tag,
- FALSE);
-
- dlil_stats.inject_if_in2++;
- if (retval == EJUSTRETURN)
- retval = 0;
- else
- if (retval)
- m_freem(m);
+ ifce = zalloc_noblock(ifnet_fc_zone);
+ if (ifce == NULL) {
+ /* memory allocation failed */
+ lck_mtx_unlock(&ifnet_fc_lock);
+ return (ENOMEM);
+ }
+ bzero(ifce, ifnet_fc_zone_size);
- return retval;
+ ifce->ifce_flowhash = flowhash;
+ ifce->ifce_ifp = ifp;
+ RB_INSERT(ifnet_fc_tree, &ifnet_fc_tree, ifce);
+ lck_mtx_unlock(&ifnet_fc_lock);
+ return (0);
}
+static struct ifnet_fc_entry *
+ifnet_fc_get(uint32_t flowhash)
+{
+ struct ifnet_fc_entry keyfc, *ifce;
+ struct ifnet *ifp;
+
+ bzero(&keyfc, sizeof (keyfc));
+ keyfc.ifce_flowhash = flowhash;
+
+ lck_mtx_lock_spin(&ifnet_fc_lock);
+ ifce = RB_FIND(ifnet_fc_tree, &ifnet_fc_tree, &keyfc);
+ if (ifce == NULL) {
+ /* Entry is not present in ifnet_fc_tree, return */
+ lck_mtx_unlock(&ifnet_fc_lock);
+ return (NULL);
+ }
+ RB_REMOVE(ifnet_fc_tree, &ifnet_fc_tree, ifce);
+ VERIFY(ifce->ifce_ifp != NULL);
+ ifp = ifce->ifce_ifp;
+ /* become regular mutex */
+ lck_mtx_convert_spin(&ifnet_fc_lock);
-int
-dlil_inject_pr_input(struct mbuf *m, char *frame_header, u_long from_id)
-{
- struct ifnet *orig_ifp = 0;
- struct dlil_filterq_entry *tmp;
- int retval;
- struct if_proto *ifproto = 0;
- int match_found;
- struct ifnet *ifp;
-
+ if (!ifnet_is_attached(ifp, 0)) {
+ /*
+ * This ifp is not attached or in the process of being
+ * detached; just don't process it.
+ */
+ ifnet_fc_entry_free(ifce);
+ ifce = NULL;
+ }
+ lck_mtx_unlock(&ifnet_fc_lock);
- dlil_stats.inject_pr_in1++;
- if (from_id > MAX_DLIL_FILTERS)
- return ERANGE;
+ return (ifce);
+}
- if (dlil_filters[from_id].type != DLIL_PR_FILTER)
- return ENOENT;
+static void
+ifnet_fc_entry_free(struct ifnet_fc_entry *ifce)
+{
+ zfree(ifnet_fc_zone, ifce);
+}
- ifproto = dlil_filters[from_id].proto;
- ifp = dlil_filters[from_id].ifp;
+static uint32_t
+ifnet_calc_flowhash(struct ifnet *ifp)
+{
+ struct ifnet_flowhash_key fh __attribute__((aligned(8)));
+ uint32_t flowhash = 0;
+
+ if (ifnet_flowhash_seed == 0)
+ ifnet_flowhash_seed = RandomULong();
+
+ bzero(&fh, sizeof (fh));
+
+ (void) snprintf(fh.ifk_name, sizeof (fh.ifk_name), "%s", ifp->if_name);
+ fh.ifk_unit = ifp->if_unit;
+ fh.ifk_flags = ifp->if_flags;
+ fh.ifk_eflags = ifp->if_eflags;
+ fh.ifk_capabilities = ifp->if_capabilities;
+ fh.ifk_capenable = ifp->if_capenable;
+ fh.ifk_output_sched_model = ifp->if_output_sched_model;
+ fh.ifk_rand1 = RandomULong();
+ fh.ifk_rand2 = RandomULong();
+
+try_again:
+ flowhash = net_flowhash(&fh, sizeof (fh), ifnet_flowhash_seed);
+ if (flowhash == 0) {
+ /* try to get a non-zero flowhash */
+ ifnet_flowhash_seed = RandomULong();
+ goto try_again;
+ }
+ return (flowhash);
+}
-/*
- * Call any attached protocol filters.
- */
+int
+ifnet_set_netsignature(struct ifnet *ifp, uint8_t family, uint8_t len,
+ uint16_t flags, uint8_t *data)
+{
+#pragma unused(flags)
+ int error = 0;
+
+ switch (family) {
+ case AF_INET:
+ if_inetdata_lock_exclusive(ifp);
+ if (IN_IFEXTRA(ifp) != NULL) {
+ if (len == 0) {
+ /* Allow clearing the signature */
+ IN_IFEXTRA(ifp)->netsig_len = 0;
+ bzero(IN_IFEXTRA(ifp)->netsig,
+ sizeof (IN_IFEXTRA(ifp)->netsig));
+ if_inetdata_lock_done(ifp);
+ break;
+ } else if (len > sizeof (IN_IFEXTRA(ifp)->netsig)) {
+ error = EINVAL;
+ if_inetdata_lock_done(ifp);
+ break;
+ }
+ IN_IFEXTRA(ifp)->netsig_len = len;
+ bcopy(data, IN_IFEXTRA(ifp)->netsig, len);
+ } else {
+ error = ENOMEM;
+ }
+ if_inetdata_lock_done(ifp);
+ break;
- match_found = 0;
- TAILQ_FOREACH_REVERSE(tmp, &ifproto->pr_flt_head, que, dlil_filterq_head) {
- if ((match_found) && (PFILT(tmp).filter_dl_input)) {
- retval = (*PFILT(tmp).filter_dl_input)(PFILT(tmp).cookie,
- &m,
- &frame_header,
- &ifp);
-
- if (retval) {
- if (retval == EJUSTRETURN)
- return 0;
- else {
- m_freem(m);
- return retval;
- }
- }
- }
-
- if (tmp->filter_id == from_id)
- match_found = 1;
- }
-
-
- retval = (*ifproto->dl_input)(m, frame_header,
- ifp, ifproto->dl_tag,
- FALSE);
-
- if (retval == EJUSTRETURN)
- retval = 0;
- else
- if (retval)
- m_freem(m);
-
- dlil_stats.inject_pr_in2++;
- return retval;
-}
+ case AF_INET6:
+ if_inet6data_lock_exclusive(ifp);
+ if (IN6_IFEXTRA(ifp) != NULL) {
+ if (len == 0) {
+ /* Allow clearing the signature */
+ IN6_IFEXTRA(ifp)->netsig_len = 0;
+ bzero(IN6_IFEXTRA(ifp)->netsig,
+ sizeof (IN6_IFEXTRA(ifp)->netsig));
+ if_inet6data_lock_done(ifp);
+ break;
+ } else if (len > sizeof (IN6_IFEXTRA(ifp)->netsig)) {
+ error = EINVAL;
+ if_inet6data_lock_done(ifp);
+ break;
+ }
+ IN6_IFEXTRA(ifp)->netsig_len = len;
+ bcopy(data, IN6_IFEXTRA(ifp)->netsig, len);
+ } else {
+ error = ENOMEM;
+ }
+ if_inet6data_lock_done(ifp);
+ break;
+ default:
+ error = EINVAL;
+ break;
+ }
+ return (error);
+}
int
-dlil_inject_pr_output(struct mbuf *m,
- struct sockaddr *dest,
- int raw,
- char *frame_type,
- char *dst_linkaddr,
- u_long from_id)
-{
- struct ifnet *orig_ifp = 0;
- struct ifnet *ifp;
- struct dlil_filterq_entry *tmp;
- int retval = 0;
- char frame_type_buffer[MAX_FRAME_TYPE_SIZE * 4];
- char dst_linkaddr_buffer[MAX_LINKADDR * 4];
- struct dlil_filterq_head *fhead;
- int match_found;
- u_long dl_tag;
-
-
- dlil_stats.inject_pr_out1++;
- if (raw == 0) {
- if (frame_type)
- bcopy(frame_type, &frame_type_buffer[0], MAX_FRAME_TYPE_SIZE * 4);
- else
- return EINVAL;
+ifnet_get_netsignature(struct ifnet *ifp, uint8_t family, uint8_t *len,
+ uint16_t *flags, uint8_t *data)
+{
+ int error = 0;
+
+ if (ifp == NULL || len == NULL || flags == NULL || data == NULL)
+ return (EINVAL);
+
+ switch (family) {
+ case AF_INET:
+ if_inetdata_lock_shared(ifp);
+ if (IN_IFEXTRA(ifp) != NULL) {
+ if (*len == 0 || *len < IN_IFEXTRA(ifp)->netsig_len) {
+ error = EINVAL;
+ if_inetdata_lock_done(ifp);
+ break;
+ }
+ if ((*len = IN_IFEXTRA(ifp)->netsig_len) > 0)
+ bcopy(IN_IFEXTRA(ifp)->netsig, data, *len);
+ else
+ error = ENOENT;
+ } else {
+ error = ENOMEM;
+ }
+ if_inetdata_lock_done(ifp);
+ break;
- if (dst_linkaddr)
- bcopy(dst_linkaddr, &dst_linkaddr_buffer, MAX_LINKADDR * 4);
- else
- return EINVAL;
- }
+ case AF_INET6:
+ if_inet6data_lock_shared(ifp);
+ if (IN6_IFEXTRA(ifp) != NULL) {
+ if (*len == 0 || *len < IN6_IFEXTRA(ifp)->netsig_len) {
+ error = EINVAL;
+ if_inet6data_lock_done(ifp);
+ break;
+ }
+ if ((*len = IN6_IFEXTRA(ifp)->netsig_len) > 0)
+ bcopy(IN6_IFEXTRA(ifp)->netsig, data, *len);
+ else
+ error = ENOENT;
+ } else {
+ error = ENOMEM;
+ }
+ if_inet6data_lock_done(ifp);
+ break;
- if (from_id > MAX_DLIL_FILTERS)
- return ERANGE;
+ default:
+ error = EINVAL;
+ break;
+ }
- if (dlil_filters[from_id].type != DLIL_PR_FILTER)
- return ENOENT;
+ if (error == 0)
+ *flags = 0;
- ifp = dlil_filters[from_id].ifp;
- dl_tag = dlil_filters[from_id].proto->dl_tag;
-
+ return (error);
+}
- frame_type = frame_type_buffer;
- dst_linkaddr = dst_linkaddr_buffer;
+static void
+dlil_output_cksum_dbg(struct ifnet *ifp, struct mbuf *m, uint32_t hoff,
+ protocol_family_t pf)
+{
+#pragma unused(ifp)
+ uint32_t did_sw;
+
+ if (!(hwcksum_dbg_mode & HWCKSUM_DBG_FINALIZE_FORCED) ||
+ (m->m_pkthdr.csum_flags & (CSUM_TSO_IPV4|CSUM_TSO_IPV6)))
+ return;
+
+ switch (pf) {
+ case PF_INET:
+ did_sw = in_finalize_cksum(m, hoff, m->m_pkthdr.csum_flags);
+ if (did_sw & CSUM_DELAY_IP)
+ hwcksum_dbg_finalized_hdr++;
+ if (did_sw & CSUM_DELAY_DATA)
+ hwcksum_dbg_finalized_data++;
+ break;
+#if INET6
+ case PF_INET6:
+ /*
+ * Checksum offload should not have been enabled when
+ * extension headers exist; that also means that we
+ * cannot force-finalize packets with extension headers.
+ * Indicate to the callee should it skip such case by
+ * setting optlen to -1.
+ */
+ did_sw = in6_finalize_cksum(m, hoff, -1, -1,
+ m->m_pkthdr.csum_flags);
+ if (did_sw & CSUM_DELAY_IPV6_DATA)
+ hwcksum_dbg_finalized_data++;
+ break;
+#endif /* INET6 */
+ default:
+ return;
+ }
+}
- fhead = (struct dlil_filterq_head *) &ifp->if_flt_head;
-
-/*
- * Run any attached protocol filters.
- */
- match_found = 0;
-
- if (TAILQ_EMPTY(dl_tag_array[dl_tag].pr_flt_head) == 0) {
- TAILQ_FOREACH(tmp, dl_tag_array[dl_tag].pr_flt_head, que) {
- if ((match_found) && (PFILT(tmp).filter_dl_output)) {
- retval = (*PFILT(tmp).filter_dl_output)(PFILT(tmp).cookie,
- &m, &ifp, &dest, dst_linkaddr, frame_type);
- if (retval) {
- if (retval == EJUSTRETURN)
- return 0;
- else {
- m_freem(m);
- return retval;
- }
- }
- }
+static void
+dlil_input_cksum_dbg(struct ifnet *ifp, struct mbuf *m, char *frame_header,
+ protocol_family_t pf)
+{
+ uint16_t sum;
+ uint32_t hlen;
+
+ if (frame_header == NULL ||
+ frame_header < (char *)mbuf_datastart(m) ||
+ frame_header > (char *)m->m_data) {
+ printf("%s: frame header pointer 0x%llx out of range "
+ "[0x%llx,0x%llx] for mbuf 0x%llx\n", if_name(ifp),
+ (uint64_t)VM_KERNEL_ADDRPERM(frame_header),
+ (uint64_t)VM_KERNEL_ADDRPERM(mbuf_datastart(m)),
+ (uint64_t)VM_KERNEL_ADDRPERM(m->m_data),
+ (uint64_t)VM_KERNEL_ADDRPERM(m));
+ return;
+ }
+ hlen = (m->m_data - frame_header);
- if (tmp->filter_id == from_id)
- match_found = 1;
+ switch (pf) {
+ case PF_INET:
+#if INET6
+ case PF_INET6:
+#endif /* INET6 */
+ break;
+ default:
+ return;
}
- }
+ /*
+ * Force partial checksum offload; useful to simulate cases
+ * where the hardware does not support partial checksum offload,
+ * in order to validate correctness throughout the layers above.
+ */
+ if (hwcksum_dbg_mode & HWCKSUM_DBG_PARTIAL_FORCED) {
+ uint32_t foff = hwcksum_dbg_partial_rxoff_forced;
+
+ if (foff > (uint32_t)m->m_pkthdr.len)
+ return;
-/*
- * Call framing module
- */
- if ((raw == 0) && (ifp->if_framer)) {
- retval = (*ifp->if_framer)(ifp, &m, dest, dst_linkaddr, frame_type);
- if (retval) {
- if (retval == EJUSTRETURN)
- return 0;
- else
- {
- m_freem(m);
- return retval;
- }
- }
- }
-
-
-#if BRIDGE
- if (do_bridge) {
- struct mbuf *m0 = m ;
-
- if (m->m_pkthdr.rcvif)
- m->m_pkthdr.rcvif = NULL ;
- ifp = bridge_dst_lookup(m);
- bdg_forward(&m0, ifp);
- if (m0)
- m_freem(m0);
-
- return 0;
- }
-#endif
+ m->m_pkthdr.csum_flags &= ~CSUM_RX_FLAGS;
+ /* Compute 16-bit 1's complement sum from forced offset */
+ sum = m_sum16(m, foff, (m->m_pkthdr.len - foff));
-/*
- * Let interface filters (if any) do their thing ...
- */
+ m->m_pkthdr.csum_flags |= (CSUM_DATA_VALID | CSUM_PARTIAL);
+ m->m_pkthdr.csum_rx_val = sum;
+ m->m_pkthdr.csum_rx_start = (foff + hlen);
+
+ hwcksum_dbg_partial_forced++;
+ hwcksum_dbg_partial_forced_bytes += m->m_pkthdr.len;
+ }
- fhead = (struct dlil_filterq_head *) &ifp->if_flt_head;
- if (TAILQ_EMPTY(fhead) == 0) {
- while (orig_ifp != ifp) {
- orig_ifp = ifp;
- TAILQ_FOREACH(tmp, fhead, que) {
- if (IFILT(tmp).filter_if_output) {
- retval = (*IFILT(tmp).filter_if_output)(IFILT(tmp).cookie,
- &ifp,
- &m);
- if (retval) {
- if (retval == EJUSTRETURN)
- return 0;
- else {
- m_freem(m);
- return retval;
+ /*
+ * Partial checksum offload verification (and adjustment);
+ * useful to validate and test cases where the hardware
+ * supports partial checksum offload.
+ */
+ if ((m->m_pkthdr.csum_flags &
+ (CSUM_DATA_VALID | CSUM_PARTIAL | CSUM_PSEUDO_HDR)) ==
+ (CSUM_DATA_VALID | CSUM_PARTIAL)) {
+ uint32_t rxoff;
+
+ /* Start offset must begin after frame header */
+ rxoff = m->m_pkthdr.csum_rx_start;
+ if (hlen > rxoff) {
+ hwcksum_dbg_bad_rxoff++;
+ if (dlil_verbose) {
+ printf("%s: partial cksum start offset %d "
+ "is less than frame header length %d for "
+ "mbuf 0x%llx\n", if_name(ifp), rxoff, hlen,
+ (uint64_t)VM_KERNEL_ADDRPERM(m));
+ }
+ return;
+ }
+ rxoff -= hlen;
+
+ if (!(hwcksum_dbg_mode & HWCKSUM_DBG_PARTIAL_FORCED)) {
+ /*
+ * Compute the expected 16-bit 1's complement sum;
+ * skip this if we've already computed it above
+ * when partial checksum offload is forced.
+ */
+ sum = m_sum16(m, rxoff, (m->m_pkthdr.len - rxoff));
+
+ /* Hardware or driver is buggy */
+ if (sum != m->m_pkthdr.csum_rx_val) {
+ hwcksum_dbg_bad_cksum++;
+ if (dlil_verbose) {
+ printf("%s: bad partial cksum value "
+ "0x%x (expected 0x%x) for mbuf "
+ "0x%llx [rx_start %d]\n",
+ if_name(ifp),
+ m->m_pkthdr.csum_rx_val, sum,
+ (uint64_t)VM_KERNEL_ADDRPERM(m),
+ m->m_pkthdr.csum_rx_start);
+ }
+ return;
}
- }
+ }
+ hwcksum_dbg_verified++;
+
+ /*
+ * This code allows us to emulate various hardwares that
+ * perform 16-bit 1's complement sum beginning at various
+ * start offset values.
+ */
+ if (hwcksum_dbg_mode & HWCKSUM_DBG_PARTIAL_RXOFF_ADJ) {
+ uint32_t aoff = hwcksum_dbg_partial_rxoff_adj;
+
+ if (aoff == rxoff || aoff > (uint32_t)m->m_pkthdr.len)
+ return;
+ sum = m_adj_sum16(m, rxoff, aoff, sum);
+
+ m->m_pkthdr.csum_rx_val = sum;
+ m->m_pkthdr.csum_rx_start = (aoff + hlen);
+
+ hwcksum_dbg_adjusted++;
}
-
- if (ifp != orig_ifp)
- break;
- }
}
- }
+}
-/*
- * Finally, call the driver.
- */
+static int
+sysctl_hwcksum_dbg_mode SYSCTL_HANDLER_ARGS
+{
+#pragma unused(arg1, arg2)
+ u_int32_t i;
+ int err;
+
+ i = hwcksum_dbg_mode;
+
+ err = sysctl_handle_int(oidp, &i, 0, req);
+ if (err != 0 || req->newptr == USER_ADDR_NULL)
+ return (err);
- retval = (*ifp->if_output)(ifp, m);
- dlil_stats.inject_pr_out2++;
- if ((retval == 0) || (retval == EJUSTRETURN))
- return 0;
- else
- return retval;
+ if (hwcksum_dbg == 0)
+ return (ENODEV);
+
+ if ((i & ~HWCKSUM_DBG_MASK) != 0)
+ return (EINVAL);
+
+ hwcksum_dbg_mode = (i & HWCKSUM_DBG_MASK);
+
+ return (err);
}
+static int
+sysctl_hwcksum_dbg_partial_rxoff_forced SYSCTL_HANDLER_ARGS
+{
+#pragma unused(arg1, arg2)
+ u_int32_t i;
+ int err;
+
+ i = hwcksum_dbg_partial_rxoff_forced;
-int
-dlil_inject_if_output(struct mbuf *m, u_long from_id)
+ err = sysctl_handle_int(oidp, &i, 0, req);
+ if (err != 0 || req->newptr == USER_ADDR_NULL)
+ return (err);
+
+ if (!(hwcksum_dbg_mode & HWCKSUM_DBG_PARTIAL_FORCED))
+ return (ENODEV);
+
+ hwcksum_dbg_partial_rxoff_forced = i;
+
+ return (err);
+}
+
+static int
+sysctl_hwcksum_dbg_partial_rxoff_adj SYSCTL_HANDLER_ARGS
{
- struct ifnet *orig_ifp = 0;
- struct ifnet *ifp;
- struct dlil_filterq_entry *tmp;
- int retval = 0;
- struct dlil_filterq_head *fhead;
- int match_found;
+#pragma unused(arg1, arg2)
+ u_int32_t i;
+ int err;
+ i = hwcksum_dbg_partial_rxoff_adj;
- dlil_stats.inject_if_out1++;
- if (from_id > MAX_DLIL_FILTERS)
- return ERANGE;
+ err = sysctl_handle_int(oidp, &i, 0, req);
+ if (err != 0 || req->newptr == USER_ADDR_NULL)
+ return (err);
- if (dlil_filters[from_id].type != DLIL_IF_FILTER)
- return ENOENT;
+ if (!(hwcksum_dbg_mode & HWCKSUM_DBG_PARTIAL_RXOFF_ADJ))
+ return (ENODEV);
- ifp = dlil_filters[from_id].ifp;
+ hwcksum_dbg_partial_rxoff_adj = i;
-/*
- * Let interface filters (if any) do their thing ...
- */
+ return (err);
+}
+
+static int
+sysctl_tx_chain_len_stats SYSCTL_HANDLER_ARGS
+{
+#pragma unused(oidp, arg1, arg2)
+ int err;
+
+ if (req->oldptr == USER_ADDR_NULL) {
+
+ }
+ if (req->newptr != USER_ADDR_NULL) {
+ return (EPERM);
+ }
+ err = SYSCTL_OUT(req, &tx_chain_len_stats,
+ sizeof(struct chain_len_stats));
+
+ return (err);
+}
+
+
+#if DEBUG
+/* Blob for sum16 verification */
+static uint8_t sumdata[] = {
+ 0x1f, 0x8b, 0x08, 0x08, 0x4c, 0xe5, 0x9a, 0x4f, 0x00, 0x03,
+ 0x5f, 0x00, 0x5d, 0x91, 0x41, 0x4e, 0xc4, 0x30, 0x0c, 0x45,
+ 0xf7, 0x9c, 0xc2, 0x07, 0x18, 0xf5, 0x0e, 0xb0, 0xe2, 0x00,
+ 0x48, 0x88, 0xa5, 0xdb, 0xba, 0x49, 0x34, 0x69, 0xdc, 0x71,
+ 0x92, 0xa9, 0xc2, 0x8a, 0x6b, 0x70, 0x3d, 0x4e, 0x82, 0x93,
+ 0xb4, 0x08, 0xd8, 0xc5, 0xb1, 0xfd, 0xff, 0xb3, 0xfd, 0x4c,
+ 0x42, 0x5f, 0x1f, 0x9f, 0x11, 0x12, 0x43, 0xb2, 0x04, 0x93,
+ 0xe0, 0x7b, 0x01, 0x0e, 0x14, 0x07, 0x78, 0xd1, 0x78, 0x75,
+ 0x71, 0x71, 0xe9, 0x08, 0x84, 0x46, 0xf2, 0xc7, 0x3b, 0x09,
+ 0xe7, 0xd1, 0xd3, 0x8a, 0x57, 0x92, 0x33, 0xcd, 0x39, 0xcc,
+ 0xb0, 0x91, 0x89, 0xe0, 0x42, 0x53, 0x8b, 0xb7, 0x8c, 0x42,
+ 0x60, 0xd9, 0x9f, 0x7a, 0x55, 0x19, 0x76, 0xcb, 0x10, 0x49,
+ 0x35, 0xac, 0x0b, 0x5a, 0x3c, 0xbb, 0x65, 0x51, 0x8c, 0x90,
+ 0x7c, 0x69, 0x45, 0x45, 0x81, 0xb4, 0x2b, 0x70, 0x82, 0x85,
+ 0x55, 0x91, 0x17, 0x90, 0xdc, 0x14, 0x1e, 0x35, 0x52, 0xdd,
+ 0x02, 0x16, 0xef, 0xb5, 0x40, 0x89, 0xe2, 0x46, 0x53, 0xad,
+ 0x93, 0x6e, 0x98, 0x30, 0xe5, 0x08, 0xb7, 0xcc, 0x03, 0xbc,
+ 0x71, 0x86, 0x09, 0x43, 0x0d, 0x52, 0xf5, 0xa2, 0xf5, 0xa2,
+ 0x56, 0x11, 0x8d, 0xa8, 0xf5, 0xee, 0x92, 0x3d, 0xfe, 0x8c,
+ 0x67, 0x71, 0x8b, 0x0e, 0x2d, 0x70, 0x77, 0xbe, 0xbe, 0xea,
+ 0xbf, 0x9a, 0x8d, 0x9c, 0x53, 0x53, 0xe5, 0xe0, 0x4b, 0x87,
+ 0x85, 0xd2, 0x45, 0x95, 0x30, 0xc1, 0xcc, 0xe0, 0x74, 0x54,
+ 0x13, 0x58, 0xe8, 0xe8, 0x79, 0xa2, 0x09, 0x73, 0xa4, 0x0e,
+ 0x39, 0x59, 0x0c, 0xe6, 0x9c, 0xb2, 0x4f, 0x06, 0x5b, 0x8e,
+ 0xcd, 0x17, 0x6c, 0x5e, 0x95, 0x4d, 0x70, 0xa2, 0x0a, 0xbf,
+ 0xa3, 0xcc, 0x03, 0xbc, 0x5a, 0xe7, 0x75, 0x06, 0x5e, 0x75,
+ 0xef, 0x58, 0x8e, 0x15, 0xd1, 0x0a, 0x18, 0xff, 0xdd, 0xe6,
+ 0x02, 0x3b, 0xb5, 0xb4, 0xa1, 0xe0, 0x72, 0xfc, 0xe3, 0xab,
+ 0x07, 0xe0, 0x4d, 0x65, 0xea, 0x92, 0xeb, 0xf2, 0x7b, 0x17,
+ 0x05, 0xce, 0xc6, 0xf6, 0x2b, 0xbb, 0x70, 0x3d, 0x00, 0x95,
+ 0xe0, 0x07, 0x52, 0x3b, 0x58, 0xfc, 0x7c, 0x69, 0x4d, 0xe9,
+ 0xf7, 0xa9, 0x66, 0x1e, 0x1e, 0xbe, 0x01, 0x69, 0x98, 0xfe,
+ 0xc8, 0x28, 0x02, 0x00, 0x00
+};
- fhead = (struct dlil_filterq_head *) &ifp->if_flt_head;
- match_found = 0;
-
- if (TAILQ_EMPTY(fhead) == 0) {
- while (orig_ifp != ifp) {
- orig_ifp = ifp;
- TAILQ_FOREACH(tmp, fhead, que) {
- if ((match_found) && (IFILT(tmp).filter_if_output)) {
- retval = (*IFILT(tmp).filter_if_output)(IFILT(tmp).cookie,
- &ifp,
- &m);
- if (retval) {
- if (retval == EJUSTRETURN)
- return 0;
- else {
- m_freem(m);
- return retval;
+/* Precomputed 16-bit 1's complement sums for various spans of the above data */
+static struct {
+ int len;
+ uint16_t sum;
+} sumtbl[] = {
+ { 11, 0xcb6d },
+ { 20, 0x20dd },
+ { 27, 0xbabd },
+ { 32, 0xf3e8 },
+ { 37, 0x197d },
+ { 43, 0x9eae },
+ { 64, 0x4678 },
+ { 127, 0x9399 },
+ { 256, 0xd147 },
+ { 325, 0x0358 }
+};
+#define SUMTBL_MAX ((int)sizeof (sumtbl) / (int)sizeof (sumtbl[0]))
+
+static void
+dlil_verify_sum16(void)
+{
+ struct mbuf *m;
+ uint8_t *buf;
+ int n;
+
+ /* Make sure test data plus extra room for alignment fits in cluster */
+ _CASSERT((sizeof (sumdata) + (sizeof (uint64_t) * 2)) <= MCLBYTES);
+
+ m = m_getcl(M_WAITOK, MT_DATA, M_PKTHDR);
+ MH_ALIGN(m, sizeof (uint32_t)); /* 32-bit starting alignment */
+ buf = mtod(m, uint8_t *); /* base address */
+
+ for (n = 0; n < SUMTBL_MAX; n++) {
+ uint16_t len = sumtbl[n].len;
+ int i;
+
+ /* Verify for all possible alignments */
+ for (i = 0; i < (int)sizeof (uint64_t); i++) {
+ uint16_t sum;
+ uint8_t *c;
+
+ /* Copy over test data to mbuf */
+ VERIFY(len <= sizeof (sumdata));
+ c = buf + i;
+ bcopy(sumdata, c, len);
+
+ /* Zero-offset test (align by data pointer) */
+ m->m_data = (caddr_t)c;
+ m->m_len = len;
+ sum = m_sum16(m, 0, len);
+
+ /* Something is horribly broken; stop now */
+ if (sum != sumtbl[n].sum) {
+ panic("%s: broken m_sum16 for len=%d align=%d "
+ "sum=0x%04x [expected=0x%04x]\n", __func__,
+ len, i, sum, sumtbl[n].sum);
+ /* NOTREACHED */
}
- }
+ /* Alignment test by offset (fixed data pointer) */
+ m->m_data = (caddr_t)buf;
+ m->m_len = i + len;
+ sum = m_sum16(m, i, len);
+
+ /* Something is horribly broken; stop now */
+ if (sum != sumtbl[n].sum) {
+ panic("%s: broken m_sum16 for len=%d offset=%d "
+ "sum=0x%04x [expected=0x%04x]\n", __func__,
+ len, i, sum, sumtbl[n].sum);
+ /* NOTREACHED */
+ }
+#if INET
+ /* Simple sum16 contiguous buffer test by aligment */
+ sum = b_sum16(c, len);
+
+ /* Something is horribly broken; stop now */
+ if (sum != sumtbl[n].sum) {
+ panic("%s: broken b_sum16 for len=%d align=%d "
+ "sum=0x%04x [expected=0x%04x]\n", __func__,
+ len, i, sum, sumtbl[n].sum);
+ /* NOTREACHED */
+ }
+#endif /* INET */
}
-
- if (ifp != orig_ifp)
- break;
+ }
+ m_freem(m);
+
+ printf("DLIL: SUM16 self-tests PASSED\n");
+}
+#endif /* DEBUG */
+
+#define CASE_STRINGIFY(x) case x: return #x
+
+__private_extern__ const char *
+dlil_kev_dl_code_str(u_int32_t event_code)
+{
+ switch (event_code) {
+ CASE_STRINGIFY(KEV_DL_SIFFLAGS);
+ CASE_STRINGIFY(KEV_DL_SIFMETRICS);
+ CASE_STRINGIFY(KEV_DL_SIFMTU);
+ CASE_STRINGIFY(KEV_DL_SIFPHYS);
+ CASE_STRINGIFY(KEV_DL_SIFMEDIA);
+ CASE_STRINGIFY(KEV_DL_SIFGENERIC);
+ CASE_STRINGIFY(KEV_DL_ADDMULTI);
+ CASE_STRINGIFY(KEV_DL_DELMULTI);
+ CASE_STRINGIFY(KEV_DL_IF_ATTACHED);
+ CASE_STRINGIFY(KEV_DL_IF_DETACHING);
+ CASE_STRINGIFY(KEV_DL_IF_DETACHED);
+ CASE_STRINGIFY(KEV_DL_LINK_OFF);
+ CASE_STRINGIFY(KEV_DL_LINK_ON);
+ CASE_STRINGIFY(KEV_DL_PROTO_ATTACHED);
+ CASE_STRINGIFY(KEV_DL_PROTO_DETACHED);
+ CASE_STRINGIFY(KEV_DL_LINK_ADDRESS_CHANGED);
+ CASE_STRINGIFY(KEV_DL_WAKEFLAGS_CHANGED);
+ CASE_STRINGIFY(KEV_DL_IF_IDLE_ROUTE_REFCNT);
+ CASE_STRINGIFY(KEV_DL_IFCAP_CHANGED);
+ CASE_STRINGIFY(KEV_DL_LINK_QUALITY_METRIC_CHANGED);
+ CASE_STRINGIFY(KEV_DL_NODE_PRESENCE);
+ CASE_STRINGIFY(KEV_DL_NODE_ABSENCE);
+ CASE_STRINGIFY(KEV_DL_MASTER_ELECTED);
+ CASE_STRINGIFY(KEV_DL_ISSUES);
+ CASE_STRINGIFY(KEV_DL_IFDELEGATE_CHANGED);
+ default:
+ break;
+ }
+ return ("");
+}
+
+/*
+ * Mirror the arguments of ifnet_get_local_ports_extended()
+ * ifindex
+ * protocol
+ * flags
+ */
+static int
+sysctl_get_ports_used SYSCTL_HANDLER_ARGS
+{
+#pragma unused(oidp)
+ int *name = (int *)arg1;
+ int namelen = arg2;
+ int error = 0;
+ int idx;
+ protocol_family_t protocol;
+ u_int32_t flags;
+ ifnet_t ifp = NULL;
+ u_int8_t *bitfield = NULL;
+
+ if (req->newptr != USER_ADDR_NULL) {
+ error = EPERM;
+ goto done;
+ }
+ if (namelen != 3) {
+ error = ENOENT;
+ goto done;
+ }
+
+ if (req->oldptr == USER_ADDR_NULL) {
+ req->oldidx = bitstr_size(65536);
+ goto done;
+ }
+ if (req->oldlen < bitstr_size(65536)) {
+ error = ENOMEM;
+ goto done;
+ }
- if (from_id == tmp->filter_id)
- match_found = 1;
- }
+ idx = name[0];
+ protocol = name[1];
+ flags = name[2];
+
+ ifnet_head_lock_shared();
+ if (idx > if_index) {
+ ifnet_head_done();
+ error = ENOENT;
+ goto done;
+ }
+ ifp = ifindex2ifnet[idx];
+ ifnet_head_done();
+
+ bitfield = _MALLOC(bitstr_size(65536), M_TEMP, M_WAITOK);
+ if (bitfield == NULL) {
+ error = ENOMEM;
+ goto done;
+ }
+ error = ifnet_get_local_ports_extended(ifp, protocol, flags, bitfield);
+ if (error != 0) {
+ printf("%s: ifnet_get_local_ports_extended() error %d\n",
+ __func__, error);
+ goto done;
}
- }
+ error = SYSCTL_OUT(req, bitfield, bitstr_size(65536));
+done:
+ if (bitfield != NULL)
+ _FREE(bitfield, M_TEMP);
+ return (error);
+}
+#if (DEVELOPMENT || DEBUG)
/*
- * Finally, call the driver.
+ * The sysctl variable name contains the input parameters of
+ * ifnet_get_keepalive_offload_frames()
+ * ifp (interface index): name[0]
+ * frames_array_count: name[1]
+ * frame_data_offset: name[2]
+ * The return length gives used_frames_count
*/
-
- retval = (*ifp->if_output)(ifp, m);
- dlil_stats.inject_if_out2++;
- if ((retval == 0) || (retval == EJUSTRETURN))
- return 0;
- else
- return retval;
+static int
+sysctl_get_kao_frames SYSCTL_HANDLER_ARGS
+{
+#pragma unused(oidp)
+ int *name = (int *)arg1;
+ u_int namelen = arg2;
+ int idx;
+ ifnet_t ifp = NULL;
+ u_int32_t frames_array_count;
+ size_t frame_data_offset;
+ u_int32_t used_frames_count;
+ struct ifnet_keepalive_offload_frame *frames_array = NULL;
+ int error = 0;
+ u_int32_t i;
+
+ /*
+ * Only root can get look at other people TCP frames
+ */
+ error = proc_suser(current_proc());
+ if (error != 0)
+ goto done;
+ /*
+ * Validate the input parameters
+ */
+ if (req->newptr != USER_ADDR_NULL) {
+ error = EPERM;
+ goto done;
+ }
+ if (namelen != 3) {
+ error = EINVAL;
+ goto done;
+ }
+ if (req->oldptr == USER_ADDR_NULL) {
+ error = EINVAL;
+ goto done;
+ }
+ if (req->oldlen == 0) {
+ error = EINVAL;
+ goto done;
+ }
+ idx = name[0];
+ frames_array_count = name[1];
+ frame_data_offset = name[2];
+
+ /* Make sure the passed buffer is large enough */
+ if (frames_array_count * sizeof(struct ifnet_keepalive_offload_frame) >
+ req->oldlen) {
+ error = ENOMEM;
+ goto done;
+ }
+
+ ifnet_head_lock_shared();
+ if (idx > if_index) {
+ ifnet_head_done();
+ error = ENOENT;
+ goto done;
+ }
+ ifp = ifindex2ifnet[idx];
+ ifnet_head_done();
+
+ frames_array = _MALLOC(frames_array_count *
+ sizeof(struct ifnet_keepalive_offload_frame), M_TEMP, M_WAITOK);
+ if (frames_array == NULL) {
+ error = ENOMEM;
+ goto done;
+ }
+
+ error = ifnet_get_keepalive_offload_frames(ifp, frames_array,
+ frames_array_count, frame_data_offset, &used_frames_count);
+ if (error != 0) {
+ printf("%s: ifnet_get_keepalive_offload_frames error %d\n",
+ __func__, error);
+ goto done;
+ }
+
+ for (i = 0; i < used_frames_count; i++) {
+ error = SYSCTL_OUT(req, frames_array + i,
+ sizeof(struct ifnet_keepalive_offload_frame));
+ if (error != 0) {
+ goto done;
+ }
+ }
+done:
+ if (frames_array != NULL)
+ _FREE(frames_array, M_TEMP);
+ return (error);
}
+#endif /* DEVELOPMENT || DEBUG */
projects / apple / xnu.git / blobdiff