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1 /*
2 * Copyright (c) 2010-2017 Apple Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28
29 #include <sys/param.h>
30 #include <sys/types.h>
31 #include <sys/kpi_mbuf.h>
32 #include <sys/socket.h>
33 #include <sys/kern_control.h>
34 #include <sys/mcache.h>
35 #include <sys/socketvar.h>
36 #include <sys/sysctl.h>
37 #include <sys/queue.h>
38 #include <sys/priv.h>
39 #include <sys/protosw.h>
40
41 #include <kern/clock.h>
42 #include <kern/debug.h>
43
44 #include <libkern/libkern.h>
45 #include <libkern/OSMalloc.h>
46 #include <libkern/OSAtomic.h>
47 #include <libkern/locks.h>
48
49 #include <net/if.h>
50 #include <net/if_var.h>
51 #include <net/if_types.h>
52 #include <net/route.h>
53
54 // These includes appear in ntstat.h but we include them here first so they won't trigger
55 // any clang diagnostic errors.
56 #include <netinet/in.h>
57 #include <netinet/in_stat.h>
58 #include <netinet/tcp.h>
59
60 #pragma clang diagnostic push
61 #pragma clang diagnostic error "-Wpadded"
62 #pragma clang diagnostic error "-Wpacked"
63 // This header defines structures shared with user space, so we need to ensure there is
64 // no compiler inserted padding in case the user space process isn't using the same
65 // architecture as the kernel (example: i386 process with x86_64 kernel).
66 #include <net/ntstat.h>
67 #pragma clang diagnostic pop
68
69 #include <netinet/ip_var.h>
70 #include <netinet/in_pcb.h>
71 #include <netinet/in_var.h>
72 #include <netinet/tcp_var.h>
73 #include <netinet/tcp_fsm.h>
74 #include <netinet/tcp_cc.h>
75 #include <netinet/udp.h>
76 #include <netinet/udp_var.h>
77 #include <netinet6/in6_pcb.h>
78 #include <netinet6/in6_var.h>
79
80 __private_extern__ int nstat_collect = 1;
81
82 #if (DEBUG || DEVELOPMENT)
83 SYSCTL_INT(_net, OID_AUTO, statistics, CTLFLAG_RW | CTLFLAG_LOCKED,
84 &nstat_collect, 0, "Collect detailed statistics");
85 #endif /* (DEBUG || DEVELOPMENT) */
86
87 #if CONFIG_EMBEDDED
88 static int nstat_privcheck = 1;
89 #else
90 static int nstat_privcheck = 0;
91 #endif
92 SYSCTL_INT(_net, OID_AUTO, statistics_privcheck, CTLFLAG_RW | CTLFLAG_LOCKED,
93 &nstat_privcheck, 0, "Entitlement check");
94
95 SYSCTL_NODE(_net, OID_AUTO, stats,
96 CTLFLAG_RW|CTLFLAG_LOCKED, 0, "network statistics");
97
98 static int nstat_debug = 0;
99 SYSCTL_INT(_net_stats, OID_AUTO, debug, CTLFLAG_RW | CTLFLAG_LOCKED,
100 &nstat_debug, 0, "");
101
102 static int nstat_sendspace = 2048;
103 SYSCTL_INT(_net_stats, OID_AUTO, sendspace, CTLFLAG_RW | CTLFLAG_LOCKED,
104 &nstat_sendspace, 0, "");
105
106 static int nstat_recvspace = 8192;
107 SYSCTL_INT(_net_stats, OID_AUTO, recvspace, CTLFLAG_RW | CTLFLAG_LOCKED,
108 &nstat_recvspace, 0, "");
109
110 static struct nstat_stats nstat_stats;
111 SYSCTL_STRUCT(_net_stats, OID_AUTO, stats, CTLFLAG_RD | CTLFLAG_LOCKED,
112 &nstat_stats, nstat_stats, "");
113
114 static u_int32_t nstat_lim_interval = 30 * 60; /* Report interval, seconds */
115 static u_int32_t nstat_lim_min_tx_pkts = 100;
116 static u_int32_t nstat_lim_min_rx_pkts = 100;
117 #if (DEBUG || DEVELOPMENT)
118 SYSCTL_INT(_net_stats, OID_AUTO, lim_report_interval,
119 CTLFLAG_RW | CTLFLAG_LOCKED, &nstat_lim_interval, 0,
120 "Low internet stat report interval");
121
122 SYSCTL_INT(_net_stats, OID_AUTO, lim_min_tx_pkts,
123 CTLFLAG_RW | CTLFLAG_LOCKED, &nstat_lim_min_tx_pkts, 0,
124 "Low Internet, min transmit packets threshold");
125
126 SYSCTL_INT(_net_stats, OID_AUTO, lim_min_rx_pkts,
127 CTLFLAG_RW | CTLFLAG_LOCKED, &nstat_lim_min_rx_pkts, 0,
128 "Low Internet, min receive packets threshold");
129 #endif /* DEBUG || DEVELOPMENT */
130
131 static struct net_api_stats net_api_stats_before;
132 static u_int64_t net_api_stats_last_report_time;
133 #define NET_API_STATS_REPORT_INTERVAL (12 * 60 * 60) /* 12 hours, in seconds */
134 static u_int32_t net_api_stats_report_interval = NET_API_STATS_REPORT_INTERVAL;
135
136 #if (DEBUG || DEVELOPMENT)
137 SYSCTL_UINT(_net_stats, OID_AUTO, api_report_interval,
138 CTLFLAG_RW | CTLFLAG_LOCKED, &net_api_stats_report_interval, 0, "");
139 #endif /* DEBUG || DEVELOPMENT */
140
141 enum
142 {
143 NSTAT_FLAG_CLEANUP = (1 << 0),
144 NSTAT_FLAG_REQCOUNTS = (1 << 1),
145 NSTAT_FLAG_SUPPORTS_UPDATES = (1 << 2),
146 NSTAT_FLAG_SYSINFO_SUBSCRIBED = (1 << 3),
147 };
148
149 #if CONFIG_EMBEDDED
150 #define QUERY_CONTINUATION_SRC_COUNT 50
151 #else
152 #define QUERY_CONTINUATION_SRC_COUNT 100
153 #endif
154
155 typedef TAILQ_HEAD(, nstat_src) tailq_head_nstat_src;
156 typedef TAILQ_ENTRY(nstat_src) tailq_entry_nstat_src;
157
158 typedef struct nstat_provider_filter
159 {
160 u_int64_t npf_flags;
161 u_int64_t npf_events;
162 pid_t npf_pid;
163 uuid_t npf_uuid;
164 } nstat_provider_filter;
165
166
167 typedef struct nstat_control_state
168 {
169 struct nstat_control_state *ncs_next;
170 u_int32_t ncs_watching;
171 decl_lck_mtx_data(, ncs_mtx);
172 kern_ctl_ref ncs_kctl;
173 u_int32_t ncs_unit;
174 nstat_src_ref_t ncs_next_srcref;
175 tailq_head_nstat_src ncs_src_queue;
176 mbuf_t ncs_accumulated;
177 u_int32_t ncs_flags;
178 nstat_provider_filter ncs_provider_filters[NSTAT_PROVIDER_COUNT];
179 /* state maintained for partial query requests */
180 u_int64_t ncs_context;
181 u_int64_t ncs_seq;
182 } nstat_control_state;
183
184 typedef struct nstat_provider
185 {
186 struct nstat_provider *next;
187 nstat_provider_id_t nstat_provider_id;
188 size_t nstat_descriptor_length;
189 errno_t (*nstat_lookup)(const void *data, u_int32_t length, nstat_provider_cookie_t *out_cookie);
190 int (*nstat_gone)(nstat_provider_cookie_t cookie);
191 errno_t (*nstat_counts)(nstat_provider_cookie_t cookie, struct nstat_counts *out_counts, int *out_gone);
192 errno_t (*nstat_watcher_add)(nstat_control_state *state, nstat_msg_add_all_srcs *req);
193 void (*nstat_watcher_remove)(nstat_control_state *state);
194 errno_t (*nstat_copy_descriptor)(nstat_provider_cookie_t cookie, void *data, u_int32_t len);
195 void (*nstat_release)(nstat_provider_cookie_t cookie, boolean_t locked);
196 bool (*nstat_reporting_allowed)(nstat_provider_cookie_t cookie, nstat_provider_filter *filter);
197 } nstat_provider;
198
199 typedef STAILQ_HEAD(, nstat_src) stailq_head_nstat_src;
200 typedef STAILQ_ENTRY(nstat_src) stailq_entry_nstat_src;
201
202 typedef TAILQ_HEAD(, nstat_tu_shadow) tailq_head_tu_shadow;
203 typedef TAILQ_ENTRY(nstat_tu_shadow) tailq_entry_tu_shadow;
204
205 typedef TAILQ_HEAD(, nstat_procdetails) tailq_head_procdetails;
206 typedef TAILQ_ENTRY(nstat_procdetails) tailq_entry_procdetails;
207
208 typedef struct nstat_src
209 {
210 tailq_entry_nstat_src ns_control_link; // All sources for the nstat_control_state, for iterating over.
211 nstat_control_state *ns_control; // The nstat_control_state that this is a source for
212 nstat_src_ref_t srcref;
213 nstat_provider *provider;
214 nstat_provider_cookie_t cookie;
215 uint32_t filter;
216 uint64_t seq;
217 } nstat_src;
218
219 static errno_t nstat_control_send_counts(nstat_control_state *,
220 nstat_src *, unsigned long long, u_int16_t, int *);
221 static int nstat_control_send_description(nstat_control_state *state, nstat_src *src, u_int64_t context, u_int16_t hdr_flags);
222 static int nstat_control_send_update(nstat_control_state *state, nstat_src *src, u_int64_t context, u_int16_t hdr_flags, int *gone);
223 static errno_t nstat_control_send_removed(nstat_control_state *, nstat_src *);
224 static errno_t nstat_control_send_goodbye(nstat_control_state *state, nstat_src *src);
225 static void nstat_control_cleanup_source(nstat_control_state *state, nstat_src *src, boolean_t);
226 static bool nstat_control_reporting_allowed(nstat_control_state *state, nstat_src *src);
227 static boolean_t nstat_control_begin_query(nstat_control_state *state, const nstat_msg_hdr *hdrp);
228 static u_int16_t nstat_control_end_query(nstat_control_state *state, nstat_src *last_src, boolean_t partial);
229 static void nstat_ifnet_report_ecn_stats(void);
230 static void nstat_ifnet_report_lim_stats(void);
231 static void nstat_net_api_report_stats(void);
232 static errno_t nstat_set_provider_filter( nstat_control_state *state, nstat_msg_add_all_srcs *req);
233
234 static u_int32_t nstat_udp_watchers = 0;
235 static u_int32_t nstat_tcp_watchers = 0;
236
237 static void nstat_control_register(void);
238
239 /*
240 * The lock order is as follows:
241 *
242 * socket_lock (inpcb)
243 * nstat_mtx
244 * state->ncs_mtx
245 */
246 static volatile OSMallocTag nstat_malloc_tag = NULL;
247 static nstat_control_state *nstat_controls = NULL;
248 static uint64_t nstat_idle_time = 0;
249 static decl_lck_mtx_data(, nstat_mtx);
250
251 /* some extern definitions */
252 extern void mbuf_report_peak_usage(void);
253 extern void tcp_report_stats(void);
254
255 static void
256 nstat_copy_sa_out(
257 const struct sockaddr *src,
258 struct sockaddr *dst,
259 int maxlen)
260 {
261 if (src->sa_len > maxlen) return;
262
263 bcopy(src, dst, src->sa_len);
264 if (src->sa_family == AF_INET6 &&
265 src->sa_len >= sizeof(struct sockaddr_in6))
266 {
267 struct sockaddr_in6 *sin6 = (struct sockaddr_in6*)(void *)dst;
268 if (IN6_IS_SCOPE_EMBED(&sin6->sin6_addr))
269 {
270 if (sin6->sin6_scope_id == 0)
271 sin6->sin6_scope_id = ntohs(sin6->sin6_addr.s6_addr16[1]);
272 sin6->sin6_addr.s6_addr16[1] = 0;
273 }
274 }
275 }
276
277 static void
278 nstat_ip_to_sockaddr(
279 const struct in_addr *ip,
280 u_int16_t port,
281 struct sockaddr_in *sin,
282 u_int32_t maxlen)
283 {
284 if (maxlen < sizeof(struct sockaddr_in))
285 return;
286
287 sin->sin_family = AF_INET;
288 sin->sin_len = sizeof(*sin);
289 sin->sin_port = port;
290 sin->sin_addr = *ip;
291 }
292
293 u_int16_t
294 nstat_ifnet_to_flags(
295 struct ifnet *ifp)
296 {
297 u_int16_t flags = 0;
298 u_int32_t functional_type = if_functional_type(ifp, FALSE);
299
300 /* Panic if someone adds a functional type without updating ntstat. */
301 VERIFY(0 <= functional_type && functional_type <= IFRTYPE_FUNCTIONAL_LAST);
302
303 switch (functional_type)
304 {
305 case IFRTYPE_FUNCTIONAL_UNKNOWN:
306 flags |= NSTAT_IFNET_IS_UNKNOWN_TYPE;
307 break;
308 case IFRTYPE_FUNCTIONAL_LOOPBACK:
309 flags |= NSTAT_IFNET_IS_LOOPBACK;
310 break;
311 case IFRTYPE_FUNCTIONAL_WIRED:
312 case IFRTYPE_FUNCTIONAL_INTCOPROC:
313 flags |= NSTAT_IFNET_IS_WIRED;
314 break;
315 case IFRTYPE_FUNCTIONAL_WIFI_INFRA:
316 flags |= NSTAT_IFNET_IS_WIFI;
317 break;
318 case IFRTYPE_FUNCTIONAL_WIFI_AWDL:
319 flags |= NSTAT_IFNET_IS_WIFI;
320 flags |= NSTAT_IFNET_IS_AWDL;
321 break;
322 case IFRTYPE_FUNCTIONAL_CELLULAR:
323 flags |= NSTAT_IFNET_IS_CELLULAR;
324 break;
325 }
326
327 if (IFNET_IS_EXPENSIVE(ifp))
328 {
329 flags |= NSTAT_IFNET_IS_EXPENSIVE;
330 }
331
332 return flags;
333 }
334
335 static u_int16_t
336 nstat_inpcb_to_flags(
337 const struct inpcb *inp)
338 {
339 u_int16_t flags = 0;
340
341 if ((inp != NULL ) && (inp->inp_last_outifp != NULL))
342 {
343 struct ifnet *ifp = inp->inp_last_outifp;
344 flags = nstat_ifnet_to_flags(ifp);
345
346 if (flags & NSTAT_IFNET_IS_CELLULAR)
347 {
348 if (inp->inp_socket != NULL &&
349 (inp->inp_socket->so_flags1 & SOF1_CELLFALLBACK))
350 flags |= NSTAT_IFNET_VIA_CELLFALLBACK;
351 }
352 }
353 else
354 {
355 flags = NSTAT_IFNET_IS_UNKNOWN_TYPE;
356 }
357
358 return flags;
359 }
360
361 #pragma mark -- Network Statistic Providers --
362
363 static errno_t nstat_control_source_add(u_int64_t context, nstat_control_state *state, nstat_provider *provider, nstat_provider_cookie_t cookie);
364 struct nstat_provider *nstat_providers = NULL;
365
366 static struct nstat_provider*
367 nstat_find_provider_by_id(
368 nstat_provider_id_t id)
369 {
370 struct nstat_provider *provider;
371
372 for (provider = nstat_providers; provider != NULL; provider = provider->next)
373 {
374 if (provider->nstat_provider_id == id)
375 break;
376 }
377
378 return provider;
379 }
380
381 static errno_t
382 nstat_lookup_entry(
383 nstat_provider_id_t id,
384 const void *data,
385 u_int32_t length,
386 nstat_provider **out_provider,
387 nstat_provider_cookie_t *out_cookie)
388 {
389 *out_provider = nstat_find_provider_by_id(id);
390 if (*out_provider == NULL)
391 {
392 return ENOENT;
393 }
394
395 return (*out_provider)->nstat_lookup(data, length, out_cookie);
396 }
397
398 static void nstat_init_route_provider(void);
399 static void nstat_init_tcp_provider(void);
400 static void nstat_init_udp_provider(void);
401 static void nstat_init_ifnet_provider(void);
402
403 __private_extern__ void
404 nstat_init(void)
405 {
406 if (nstat_malloc_tag != NULL) return;
407
408 OSMallocTag tag = OSMalloc_Tagalloc(NET_STAT_CONTROL_NAME, OSMT_DEFAULT);
409 if (!OSCompareAndSwapPtr(NULL, tag, &nstat_malloc_tag))
410 {
411 OSMalloc_Tagfree(tag);
412 tag = nstat_malloc_tag;
413 }
414 else
415 {
416 // we need to initialize other things, we do it here as this code path will only be hit once;
417 nstat_init_route_provider();
418 nstat_init_tcp_provider();
419 nstat_init_udp_provider();
420 nstat_init_ifnet_provider();
421 nstat_control_register();
422 }
423 }
424
425 #pragma mark -- Aligned Buffer Allocation --
426
427 struct align_header
428 {
429 u_int32_t offset;
430 u_int32_t length;
431 };
432
433 static void*
434 nstat_malloc_aligned(
435 u_int32_t length,
436 u_int8_t alignment,
437 OSMallocTag tag)
438 {
439 struct align_header *hdr = NULL;
440 u_int32_t size = length + sizeof(*hdr) + alignment - 1;
441
442 u_int8_t *buffer = OSMalloc(size, tag);
443 if (buffer == NULL) return NULL;
444
445 u_int8_t *aligned = buffer + sizeof(*hdr);
446 aligned = (u_int8_t*)P2ROUNDUP(aligned, alignment);
447
448 hdr = (struct align_header*)(void *)(aligned - sizeof(*hdr));
449 hdr->offset = aligned - buffer;
450 hdr->length = size;
451
452 return aligned;
453 }
454
455 static void
456 nstat_free_aligned(
457 void *buffer,
458 OSMallocTag tag)
459 {
460 struct align_header *hdr = (struct align_header*)(void *)((u_int8_t*)buffer - sizeof(*hdr));
461 OSFree(((char*)buffer) - hdr->offset, hdr->length, tag);
462 }
463
464 #pragma mark -- Route Provider --
465
466 static nstat_provider nstat_route_provider;
467
468 static errno_t
469 nstat_route_lookup(
470 const void *data,
471 u_int32_t length,
472 nstat_provider_cookie_t *out_cookie)
473 {
474 // rt_lookup doesn't take const params but it doesn't modify the parameters for
475 // the lookup. So...we use a union to eliminate the warning.
476 union
477 {
478 struct sockaddr *sa;
479 const struct sockaddr *const_sa;
480 } dst, mask;
481
482 const nstat_route_add_param *param = (const nstat_route_add_param*)data;
483 *out_cookie = NULL;
484
485 if (length < sizeof(*param))
486 {
487 return EINVAL;
488 }
489
490 if (param->dst.v4.sin_family == 0 ||
491 param->dst.v4.sin_family > AF_MAX ||
492 (param->mask.v4.sin_family != 0 && param->mask.v4.sin_family != param->dst.v4.sin_family))
493 {
494 return EINVAL;
495 }
496
497 if (param->dst.v4.sin_len > sizeof(param->dst) ||
498 (param->mask.v4.sin_family && param->mask.v4.sin_len > sizeof(param->mask.v4.sin_len)))
499 {
500 return EINVAL;
501 }
502 if ((param->dst.v4.sin_family == AF_INET &&
503 param->dst.v4.sin_len < sizeof(struct sockaddr_in)) ||
504 (param->dst.v6.sin6_family == AF_INET6 &&
505 param->dst.v6.sin6_len < sizeof(struct sockaddr_in6)))
506 {
507 return EINVAL;
508 }
509
510 dst.const_sa = (const struct sockaddr*)&param->dst;
511 mask.const_sa = param->mask.v4.sin_family ? (const struct sockaddr*)&param->mask : NULL;
512
513 struct radix_node_head *rnh = rt_tables[dst.sa->sa_family];
514 if (rnh == NULL) return EAFNOSUPPORT;
515
516 lck_mtx_lock(rnh_lock);
517 struct rtentry *rt = rt_lookup(TRUE, dst.sa, mask.sa, rnh, param->ifindex);
518 lck_mtx_unlock(rnh_lock);
519
520 if (rt) *out_cookie = (nstat_provider_cookie_t)rt;
521
522 return rt ? 0 : ENOENT;
523 }
524
525 static int
526 nstat_route_gone(
527 nstat_provider_cookie_t cookie)
528 {
529 struct rtentry *rt = (struct rtentry*)cookie;
530 return ((rt->rt_flags & RTF_UP) == 0) ? 1 : 0;
531 }
532
533 static errno_t
534 nstat_route_counts(
535 nstat_provider_cookie_t cookie,
536 struct nstat_counts *out_counts,
537 int *out_gone)
538 {
539 struct rtentry *rt = (struct rtentry*)cookie;
540 struct nstat_counts *rt_stats = rt->rt_stats;
541
542 if (out_gone) *out_gone = 0;
543
544 if (out_gone && (rt->rt_flags & RTF_UP) == 0) *out_gone = 1;
545
546 if (rt_stats)
547 {
548 atomic_get_64(out_counts->nstat_rxpackets, &rt_stats->nstat_rxpackets);
549 atomic_get_64(out_counts->nstat_rxbytes, &rt_stats->nstat_rxbytes);
550 atomic_get_64(out_counts->nstat_txpackets, &rt_stats->nstat_txpackets);
551 atomic_get_64(out_counts->nstat_txbytes, &rt_stats->nstat_txbytes);
552 out_counts->nstat_rxduplicatebytes = rt_stats->nstat_rxduplicatebytes;
553 out_counts->nstat_rxoutoforderbytes = rt_stats->nstat_rxoutoforderbytes;
554 out_counts->nstat_txretransmit = rt_stats->nstat_txretransmit;
555 out_counts->nstat_connectattempts = rt_stats->nstat_connectattempts;
556 out_counts->nstat_connectsuccesses = rt_stats->nstat_connectsuccesses;
557 out_counts->nstat_min_rtt = rt_stats->nstat_min_rtt;
558 out_counts->nstat_avg_rtt = rt_stats->nstat_avg_rtt;
559 out_counts->nstat_var_rtt = rt_stats->nstat_var_rtt;
560 out_counts->nstat_cell_rxbytes = out_counts->nstat_cell_txbytes = 0;
561 }
562 else
563 {
564 bzero(out_counts, sizeof(*out_counts));
565 }
566
567 return 0;
568 }
569
570 static void
571 nstat_route_release(
572 nstat_provider_cookie_t cookie,
573 __unused int locked)
574 {
575 rtfree((struct rtentry*)cookie);
576 }
577
578 static u_int32_t nstat_route_watchers = 0;
579
580 static int
581 nstat_route_walktree_add(
582 struct radix_node *rn,
583 void *context)
584 {
585 errno_t result = 0;
586 struct rtentry *rt = (struct rtentry *)rn;
587 nstat_control_state *state = (nstat_control_state*)context;
588
589 LCK_MTX_ASSERT(rnh_lock, LCK_MTX_ASSERT_OWNED);
590
591 /* RTF_UP can't change while rnh_lock is held */
592 if ((rt->rt_flags & RTF_UP) != 0)
593 {
594 /* Clear RTPRF_OURS if the route is still usable */
595 RT_LOCK(rt);
596 if (rt_validate(rt)) {
597 RT_ADDREF_LOCKED(rt);
598 RT_UNLOCK(rt);
599 } else {
600 RT_UNLOCK(rt);
601 rt = NULL;
602 }
603
604 /* Otherwise if RTF_CONDEMNED, treat it as if it were down */
605 if (rt == NULL)
606 return (0);
607
608 result = nstat_control_source_add(0, state, &nstat_route_provider, rt);
609 if (result != 0)
610 rtfree_locked(rt);
611 }
612
613 return result;
614 }
615
616 static errno_t
617 nstat_route_add_watcher(
618 nstat_control_state *state,
619 nstat_msg_add_all_srcs *req)
620 {
621 int i;
622 errno_t result = 0;
623
624 lck_mtx_lock(rnh_lock);
625
626 result = nstat_set_provider_filter(state, req);
627 if (result == 0)
628 {
629 OSIncrementAtomic(&nstat_route_watchers);
630
631 for (i = 1; i < AF_MAX; i++)
632 {
633 struct radix_node_head *rnh;
634 rnh = rt_tables[i];
635 if (!rnh) continue;
636
637 result = rnh->rnh_walktree(rnh, nstat_route_walktree_add, state);
638 if (result != 0)
639 {
640 // This is probably resource exhaustion.
641 // There currently isn't a good way to recover from this.
642 // Least bad seems to be to give up on the add-all but leave
643 // the watcher in place.
644 break;
645 }
646 }
647 }
648 lck_mtx_unlock(rnh_lock);
649
650 return result;
651 }
652
653 __private_extern__ void
654 nstat_route_new_entry(
655 struct rtentry *rt)
656 {
657 if (nstat_route_watchers == 0)
658 return;
659
660 lck_mtx_lock(&nstat_mtx);
661 if ((rt->rt_flags & RTF_UP) != 0)
662 {
663 nstat_control_state *state;
664 for (state = nstat_controls; state; state = state->ncs_next)
665 {
666 if ((state->ncs_watching & (1 << NSTAT_PROVIDER_ROUTE)) != 0)
667 {
668 // this client is watching routes
669 // acquire a reference for the route
670 RT_ADDREF(rt);
671
672 // add the source, if that fails, release the reference
673 if (nstat_control_source_add(0, state, &nstat_route_provider, rt) != 0)
674 RT_REMREF(rt);
675 }
676 }
677 }
678 lck_mtx_unlock(&nstat_mtx);
679 }
680
681 static void
682 nstat_route_remove_watcher(
683 __unused nstat_control_state *state)
684 {
685 OSDecrementAtomic(&nstat_route_watchers);
686 }
687
688 static errno_t
689 nstat_route_copy_descriptor(
690 nstat_provider_cookie_t cookie,
691 void *data,
692 u_int32_t len)
693 {
694 nstat_route_descriptor *desc = (nstat_route_descriptor*)data;
695 if (len < sizeof(*desc))
696 {
697 return EINVAL;
698 }
699 bzero(desc, sizeof(*desc));
700
701 struct rtentry *rt = (struct rtentry*)cookie;
702 desc->id = (uint64_t)VM_KERNEL_ADDRPERM(rt);
703 desc->parent_id = (uint64_t)VM_KERNEL_ADDRPERM(rt->rt_parent);
704 desc->gateway_id = (uint64_t)VM_KERNEL_ADDRPERM(rt->rt_gwroute);
705
706
707 // key/dest
708 struct sockaddr *sa;
709 if ((sa = rt_key(rt)))
710 nstat_copy_sa_out(sa, &desc->dst.sa, sizeof(desc->dst));
711
712 // mask
713 if ((sa = rt_mask(rt)) && sa->sa_len <= sizeof(desc->mask))
714 memcpy(&desc->mask, sa, sa->sa_len);
715
716 // gateway
717 if ((sa = rt->rt_gateway))
718 nstat_copy_sa_out(sa, &desc->gateway.sa, sizeof(desc->gateway));
719
720 if (rt->rt_ifp)
721 desc->ifindex = rt->rt_ifp->if_index;
722
723 desc->flags = rt->rt_flags;
724
725 return 0;
726 }
727
728 static bool
729 nstat_route_reporting_allowed(nstat_provider_cookie_t cookie, nstat_provider_filter *filter)
730 {
731 bool retval = true;
732
733 if ((filter->npf_flags & NSTAT_FILTER_IFNET_FLAGS) != 0)
734 {
735 struct rtentry *rt = (struct rtentry*)cookie;
736 struct ifnet *ifp = rt->rt_ifp;
737
738 if (ifp)
739 {
740 uint16_t interface_properties = nstat_ifnet_to_flags(ifp);
741
742 if ((filter->npf_flags & interface_properties) == 0)
743 {
744 retval = false;
745 }
746 }
747 }
748 return retval;
749 }
750
751 static void
752 nstat_init_route_provider(void)
753 {
754 bzero(&nstat_route_provider, sizeof(nstat_route_provider));
755 nstat_route_provider.nstat_descriptor_length = sizeof(nstat_route_descriptor);
756 nstat_route_provider.nstat_provider_id = NSTAT_PROVIDER_ROUTE;
757 nstat_route_provider.nstat_lookup = nstat_route_lookup;
758 nstat_route_provider.nstat_gone = nstat_route_gone;
759 nstat_route_provider.nstat_counts = nstat_route_counts;
760 nstat_route_provider.nstat_release = nstat_route_release;
761 nstat_route_provider.nstat_watcher_add = nstat_route_add_watcher;
762 nstat_route_provider.nstat_watcher_remove = nstat_route_remove_watcher;
763 nstat_route_provider.nstat_copy_descriptor = nstat_route_copy_descriptor;
764 nstat_route_provider.nstat_reporting_allowed = nstat_route_reporting_allowed;
765 nstat_route_provider.next = nstat_providers;
766 nstat_providers = &nstat_route_provider;
767 }
768
769 #pragma mark -- Route Collection --
770
771 __private_extern__ struct nstat_counts*
772 nstat_route_attach(
773 struct rtentry *rte)
774 {
775 struct nstat_counts *result = rte->rt_stats;
776 if (result) return result;
777
778 if (nstat_malloc_tag == NULL) nstat_init();
779
780 result = nstat_malloc_aligned(sizeof(*result), sizeof(u_int64_t), nstat_malloc_tag);
781 if (!result) return result;
782
783 bzero(result, sizeof(*result));
784
785 if (!OSCompareAndSwapPtr(NULL, result, &rte->rt_stats))
786 {
787 nstat_free_aligned(result, nstat_malloc_tag);
788 result = rte->rt_stats;
789 }
790
791 return result;
792 }
793
794 __private_extern__ void
795 nstat_route_detach(
796 struct rtentry *rte)
797 {
798 if (rte->rt_stats)
799 {
800 nstat_free_aligned(rte->rt_stats, nstat_malloc_tag);
801 rte->rt_stats = NULL;
802 }
803 }
804
805 __private_extern__ void
806 nstat_route_connect_attempt(
807 struct rtentry *rte)
808 {
809 while (rte)
810 {
811 struct nstat_counts* stats = nstat_route_attach(rte);
812 if (stats)
813 {
814 OSIncrementAtomic(&stats->nstat_connectattempts);
815 }
816
817 rte = rte->rt_parent;
818 }
819 }
820
821 __private_extern__ void
822 nstat_route_connect_success(
823 struct rtentry *rte)
824 {
825 // This route
826 while (rte)
827 {
828 struct nstat_counts* stats = nstat_route_attach(rte);
829 if (stats)
830 {
831 OSIncrementAtomic(&stats->nstat_connectsuccesses);
832 }
833
834 rte = rte->rt_parent;
835 }
836 }
837
838 __private_extern__ void
839 nstat_route_tx(
840 struct rtentry *rte,
841 u_int32_t packets,
842 u_int32_t bytes,
843 u_int32_t flags)
844 {
845 while (rte)
846 {
847 struct nstat_counts* stats = nstat_route_attach(rte);
848 if (stats)
849 {
850 if ((flags & NSTAT_TX_FLAG_RETRANSMIT) != 0)
851 {
852 OSAddAtomic(bytes, &stats->nstat_txretransmit);
853 }
854 else
855 {
856 OSAddAtomic64((SInt64)packets, (SInt64*)&stats->nstat_txpackets);
857 OSAddAtomic64((SInt64)bytes, (SInt64*)&stats->nstat_txbytes);
858 }
859 }
860
861 rte = rte->rt_parent;
862 }
863 }
864
865 __private_extern__ void
866 nstat_route_rx(
867 struct rtentry *rte,
868 u_int32_t packets,
869 u_int32_t bytes,
870 u_int32_t flags)
871 {
872 while (rte)
873 {
874 struct nstat_counts* stats = nstat_route_attach(rte);
875 if (stats)
876 {
877 if (flags == 0)
878 {
879 OSAddAtomic64((SInt64)packets, (SInt64*)&stats->nstat_rxpackets);
880 OSAddAtomic64((SInt64)bytes, (SInt64*)&stats->nstat_rxbytes);
881 }
882 else
883 {
884 if (flags & NSTAT_RX_FLAG_OUT_OF_ORDER)
885 OSAddAtomic(bytes, &stats->nstat_rxoutoforderbytes);
886 if (flags & NSTAT_RX_FLAG_DUPLICATE)
887 OSAddAtomic(bytes, &stats->nstat_rxduplicatebytes);
888 }
889 }
890
891 rte = rte->rt_parent;
892 }
893 }
894
895 /* atomically average current value at _val_addr with _new_val and store */
896 #define NSTAT_EWMA_ATOMIC(_val_addr, _new_val, _decay) do { \
897 volatile uint32_t _old_val; \
898 volatile uint32_t _avg; \
899 do { \
900 _old_val = *_val_addr; \
901 if (_old_val == 0) \
902 { \
903 _avg = _new_val; \
904 } \
905 else \
906 { \
907 _avg = _old_val - (_old_val >> _decay) + (_new_val >> _decay); \
908 } \
909 if (_old_val == _avg) break; \
910 } while (!OSCompareAndSwap(_old_val, _avg, _val_addr)); \
911 } while (0);
912
913 /* atomically compute minimum of current value at _val_addr with _new_val and store */
914 #define NSTAT_MIN_ATOMIC(_val_addr, _new_val) do { \
915 volatile uint32_t _old_val; \
916 do { \
917 _old_val = *_val_addr; \
918 if (_old_val != 0 && _old_val < _new_val) \
919 { \
920 break; \
921 } \
922 } while (!OSCompareAndSwap(_old_val, _new_val, _val_addr)); \
923 } while (0);
924
925 __private_extern__ void
926 nstat_route_rtt(
927 struct rtentry *rte,
928 u_int32_t rtt,
929 u_int32_t rtt_var)
930 {
931 const uint32_t decay = 3;
932
933 while (rte)
934 {
935 struct nstat_counts* stats = nstat_route_attach(rte);
936 if (stats)
937 {
938 NSTAT_EWMA_ATOMIC(&stats->nstat_avg_rtt, rtt, decay);
939 NSTAT_MIN_ATOMIC(&stats->nstat_min_rtt, rtt);
940 NSTAT_EWMA_ATOMIC(&stats->nstat_var_rtt, rtt_var, decay);
941 }
942 rte = rte->rt_parent;
943 }
944 }
945
946 __private_extern__ void
947 nstat_route_update(
948 struct rtentry *rte,
949 uint32_t connect_attempts,
950 uint32_t connect_successes,
951 uint32_t rx_packets,
952 uint32_t rx_bytes,
953 uint32_t rx_duplicatebytes,
954 uint32_t rx_outoforderbytes,
955 uint32_t tx_packets,
956 uint32_t tx_bytes,
957 uint32_t tx_retransmit,
958 uint32_t rtt,
959 uint32_t rtt_var)
960 {
961 const uint32_t decay = 3;
962
963 while (rte)
964 {
965 struct nstat_counts* stats = nstat_route_attach(rte);
966 if (stats)
967 {
968 OSAddAtomic(connect_attempts, &stats->nstat_connectattempts);
969 OSAddAtomic(connect_successes, &stats->nstat_connectsuccesses);
970 OSAddAtomic64((SInt64)tx_packets, (SInt64*)&stats->nstat_txpackets);
971 OSAddAtomic64((SInt64)tx_bytes, (SInt64*)&stats->nstat_txbytes);
972 OSAddAtomic(tx_retransmit, &stats->nstat_txretransmit);
973 OSAddAtomic64((SInt64)rx_packets, (SInt64*)&stats->nstat_rxpackets);
974 OSAddAtomic64((SInt64)rx_bytes, (SInt64*)&stats->nstat_rxbytes);
975 OSAddAtomic(rx_outoforderbytes, &stats->nstat_rxoutoforderbytes);
976 OSAddAtomic(rx_duplicatebytes, &stats->nstat_rxduplicatebytes);
977
978 if (rtt != 0) {
979 NSTAT_EWMA_ATOMIC(&stats->nstat_avg_rtt, rtt, decay);
980 NSTAT_MIN_ATOMIC(&stats->nstat_min_rtt, rtt);
981 NSTAT_EWMA_ATOMIC(&stats->nstat_var_rtt, rtt_var, decay);
982 }
983 }
984 rte = rte->rt_parent;
985 }
986 }
987
988 #pragma mark -- TCP Kernel Provider --
989
990 /*
991 * Due to the way the kernel deallocates a process (the process structure
992 * might be gone by the time we get the PCB detach notification),
993 * we need to cache the process name. Without this, proc_name() would
994 * return null and the process name would never be sent to userland.
995 *
996 * For UDP sockets, we also store the cached the connection tuples along with
997 * the interface index. This is necessary because when UDP sockets are
998 * disconnected, the connection tuples are forever lost from the inpcb, thus
999 * we need to keep track of the last call to connect() in ntstat.
1000 */
1001 struct nstat_tucookie {
1002 struct inpcb *inp;
1003 char pname[MAXCOMLEN+1];
1004 bool cached;
1005 union
1006 {
1007 struct sockaddr_in v4;
1008 struct sockaddr_in6 v6;
1009 } local;
1010 union
1011 {
1012 struct sockaddr_in v4;
1013 struct sockaddr_in6 v6;
1014 } remote;
1015 unsigned int if_index;
1016 uint16_t ifnet_properties;
1017 };
1018
1019 static struct nstat_tucookie *
1020 nstat_tucookie_alloc_internal(
1021 struct inpcb *inp,
1022 bool ref,
1023 bool locked)
1024 {
1025 struct nstat_tucookie *cookie;
1026
1027 cookie = OSMalloc(sizeof(*cookie), nstat_malloc_tag);
1028 if (cookie == NULL)
1029 return NULL;
1030 if (!locked)
1031 LCK_MTX_ASSERT(&nstat_mtx, LCK_MTX_ASSERT_NOTOWNED);
1032 if (ref && in_pcb_checkstate(inp, WNT_ACQUIRE, locked) == WNT_STOPUSING)
1033 {
1034 OSFree(cookie, sizeof(*cookie), nstat_malloc_tag);
1035 return NULL;
1036 }
1037 bzero(cookie, sizeof(*cookie));
1038 cookie->inp = inp;
1039 proc_name(inp->inp_socket->last_pid, cookie->pname,
1040 sizeof(cookie->pname));
1041 /*
1042 * We only increment the reference count for UDP sockets because we
1043 * only cache UDP socket tuples.
1044 */
1045 if (SOCK_PROTO(inp->inp_socket) == IPPROTO_UDP)
1046 OSIncrementAtomic(&inp->inp_nstat_refcnt);
1047
1048 return cookie;
1049 }
1050
1051 static struct nstat_tucookie *
1052 nstat_tucookie_alloc(
1053 struct inpcb *inp)
1054 {
1055 return nstat_tucookie_alloc_internal(inp, false, false);
1056 }
1057
1058 static struct nstat_tucookie *
1059 nstat_tucookie_alloc_ref(
1060 struct inpcb *inp)
1061 {
1062 return nstat_tucookie_alloc_internal(inp, true, false);
1063 }
1064
1065 static struct nstat_tucookie *
1066 nstat_tucookie_alloc_ref_locked(
1067 struct inpcb *inp)
1068 {
1069 return nstat_tucookie_alloc_internal(inp, true, true);
1070 }
1071
1072 static void
1073 nstat_tucookie_release_internal(
1074 struct nstat_tucookie *cookie,
1075 int inplock)
1076 {
1077 if (SOCK_PROTO(cookie->inp->inp_socket) == IPPROTO_UDP)
1078 OSDecrementAtomic(&cookie->inp->inp_nstat_refcnt);
1079 in_pcb_checkstate(cookie->inp, WNT_RELEASE, inplock);
1080 OSFree(cookie, sizeof(*cookie), nstat_malloc_tag);
1081 }
1082
1083 static void
1084 nstat_tucookie_release(
1085 struct nstat_tucookie *cookie)
1086 {
1087 nstat_tucookie_release_internal(cookie, false);
1088 }
1089
1090 static void
1091 nstat_tucookie_release_locked(
1092 struct nstat_tucookie *cookie)
1093 {
1094 nstat_tucookie_release_internal(cookie, true);
1095 }
1096
1097
1098 static nstat_provider nstat_tcp_provider;
1099
1100 static errno_t
1101 nstat_tcpudp_lookup(
1102 struct inpcbinfo *inpinfo,
1103 const void *data,
1104 u_int32_t length,
1105 nstat_provider_cookie_t *out_cookie)
1106 {
1107 struct inpcb *inp = NULL;
1108
1109 // parameter validation
1110 const nstat_tcp_add_param *param = (const nstat_tcp_add_param*)data;
1111 if (length < sizeof(*param))
1112 {
1113 return EINVAL;
1114 }
1115
1116 // src and dst must match
1117 if (param->remote.v4.sin_family != 0 &&
1118 param->remote.v4.sin_family != param->local.v4.sin_family)
1119 {
1120 return EINVAL;
1121 }
1122
1123
1124 switch (param->local.v4.sin_family)
1125 {
1126 case AF_INET:
1127 {
1128 if (param->local.v4.sin_len != sizeof(param->local.v4) ||
1129 (param->remote.v4.sin_family != 0 &&
1130 param->remote.v4.sin_len != sizeof(param->remote.v4)))
1131 {
1132 return EINVAL;
1133 }
1134
1135 inp = in_pcblookup_hash(inpinfo, param->remote.v4.sin_addr, param->remote.v4.sin_port,
1136 param->local.v4.sin_addr, param->local.v4.sin_port, 1, NULL);
1137 }
1138 break;
1139
1140 #if INET6
1141 case AF_INET6:
1142 {
1143 union
1144 {
1145 const struct in6_addr *in6c;
1146 struct in6_addr *in6;
1147 } local, remote;
1148
1149 if (param->local.v6.sin6_len != sizeof(param->local.v6) ||
1150 (param->remote.v6.sin6_family != 0 &&
1151 param->remote.v6.sin6_len != sizeof(param->remote.v6)))
1152 {
1153 return EINVAL;
1154 }
1155
1156 local.in6c = &param->local.v6.sin6_addr;
1157 remote.in6c = &param->remote.v6.sin6_addr;
1158
1159 inp = in6_pcblookup_hash(inpinfo, remote.in6, param->remote.v6.sin6_port,
1160 local.in6, param->local.v6.sin6_port, 1, NULL);
1161 }
1162 break;
1163 #endif
1164
1165 default:
1166 return EINVAL;
1167 }
1168
1169 if (inp == NULL)
1170 return ENOENT;
1171
1172 // At this point we have a ref to the inpcb
1173 *out_cookie = nstat_tucookie_alloc(inp);
1174 if (*out_cookie == NULL)
1175 in_pcb_checkstate(inp, WNT_RELEASE, 0);
1176
1177 return 0;
1178 }
1179
1180 static errno_t
1181 nstat_tcp_lookup(
1182 const void *data,
1183 u_int32_t length,
1184 nstat_provider_cookie_t *out_cookie)
1185 {
1186 return nstat_tcpudp_lookup(&tcbinfo, data, length, out_cookie);
1187 }
1188
1189 static int
1190 nstat_tcp_gone(
1191 nstat_provider_cookie_t cookie)
1192 {
1193 struct nstat_tucookie *tucookie =
1194 (struct nstat_tucookie *)cookie;
1195 struct inpcb *inp;
1196 struct tcpcb *tp;
1197
1198 return (!(inp = tucookie->inp) ||
1199 !(tp = intotcpcb(inp)) ||
1200 inp->inp_state == INPCB_STATE_DEAD) ? 1 : 0;
1201 }
1202
1203 static errno_t
1204 nstat_tcp_counts(
1205 nstat_provider_cookie_t cookie,
1206 struct nstat_counts *out_counts,
1207 int *out_gone)
1208 {
1209 struct nstat_tucookie *tucookie =
1210 (struct nstat_tucookie *)cookie;
1211 struct inpcb *inp;
1212
1213 bzero(out_counts, sizeof(*out_counts));
1214
1215 if (out_gone) *out_gone = 0;
1216
1217 // if the pcb is in the dead state, we should stop using it
1218 if (nstat_tcp_gone(cookie))
1219 {
1220 if (out_gone) *out_gone = 1;
1221 if (!(inp = tucookie->inp) || !intotcpcb(inp))
1222 return EINVAL;
1223 }
1224 inp = tucookie->inp;
1225 struct tcpcb *tp = intotcpcb(inp);
1226
1227 atomic_get_64(out_counts->nstat_rxpackets, &inp->inp_stat->rxpackets);
1228 atomic_get_64(out_counts->nstat_rxbytes, &inp->inp_stat->rxbytes);
1229 atomic_get_64(out_counts->nstat_txpackets, &inp->inp_stat->txpackets);
1230 atomic_get_64(out_counts->nstat_txbytes, &inp->inp_stat->txbytes);
1231 out_counts->nstat_rxduplicatebytes = tp->t_stat.rxduplicatebytes;
1232 out_counts->nstat_rxoutoforderbytes = tp->t_stat.rxoutoforderbytes;
1233 out_counts->nstat_txretransmit = tp->t_stat.txretransmitbytes;
1234 out_counts->nstat_connectattempts = tp->t_state >= TCPS_SYN_SENT ? 1 : 0;
1235 out_counts->nstat_connectsuccesses = tp->t_state >= TCPS_ESTABLISHED ? 1 : 0;
1236 out_counts->nstat_avg_rtt = tp->t_srtt;
1237 out_counts->nstat_min_rtt = tp->t_rttbest;
1238 out_counts->nstat_var_rtt = tp->t_rttvar;
1239 if (out_counts->nstat_avg_rtt < out_counts->nstat_min_rtt)
1240 out_counts->nstat_min_rtt = out_counts->nstat_avg_rtt;
1241 atomic_get_64(out_counts->nstat_cell_rxbytes, &inp->inp_cstat->rxbytes);
1242 atomic_get_64(out_counts->nstat_cell_txbytes, &inp->inp_cstat->txbytes);
1243 atomic_get_64(out_counts->nstat_wifi_rxbytes, &inp->inp_wstat->rxbytes);
1244 atomic_get_64(out_counts->nstat_wifi_txbytes, &inp->inp_wstat->txbytes);
1245 atomic_get_64(out_counts->nstat_wired_rxbytes, &inp->inp_Wstat->rxbytes);
1246 atomic_get_64(out_counts->nstat_wired_txbytes, &inp->inp_Wstat->txbytes);
1247
1248 return 0;
1249 }
1250
1251 static void
1252 nstat_tcp_release(
1253 nstat_provider_cookie_t cookie,
1254 int locked)
1255 {
1256 struct nstat_tucookie *tucookie =
1257 (struct nstat_tucookie *)cookie;
1258
1259 nstat_tucookie_release_internal(tucookie, locked);
1260 }
1261
1262 static errno_t
1263 nstat_tcp_add_watcher(
1264 nstat_control_state *state,
1265 nstat_msg_add_all_srcs *req)
1266 {
1267 // There is a tricky issue around getting all TCP sockets added once
1268 // and only once. nstat_tcp_new_pcb() is called prior to the new item
1269 // being placed on any lists where it might be found.
1270 // By locking the tcbinfo.ipi_lock prior to marking the state as a watcher,
1271 // it should be impossible for a new socket to be added twice.
1272 // On the other hand, there is still a timing issue where a new socket
1273 // results in a call to nstat_tcp_new_pcb() before this watcher
1274 // is instantiated and yet the socket doesn't make it into ipi_listhead
1275 // prior to the scan. <rdar://problem/30361716>
1276
1277 errno_t result;
1278
1279 lck_rw_lock_shared(tcbinfo.ipi_lock);
1280 result = nstat_set_provider_filter(state, req);
1281 if (result == 0) {
1282 OSIncrementAtomic(&nstat_tcp_watchers);
1283
1284 // Add all current tcp inpcbs. Ignore those in timewait
1285 struct inpcb *inp;
1286 struct nstat_tucookie *cookie;
1287 LIST_FOREACH(inp, tcbinfo.ipi_listhead, inp_list)
1288 {
1289 cookie = nstat_tucookie_alloc_ref(inp);
1290 if (cookie == NULL)
1291 continue;
1292 if (nstat_control_source_add(0, state, &nstat_tcp_provider,
1293 cookie) != 0)
1294 {
1295 nstat_tucookie_release(cookie);
1296 break;
1297 }
1298 }
1299 }
1300
1301 lck_rw_done(tcbinfo.ipi_lock);
1302
1303 return result;
1304 }
1305
1306 static void
1307 nstat_tcp_remove_watcher(
1308 __unused nstat_control_state *state)
1309 {
1310 OSDecrementAtomic(&nstat_tcp_watchers);
1311 }
1312
1313 __private_extern__ void
1314 nstat_tcp_new_pcb(
1315 struct inpcb *inp)
1316 {
1317 struct nstat_tucookie *cookie;
1318
1319 inp->inp_start_timestamp = mach_continuous_time();
1320
1321 if (nstat_tcp_watchers == 0)
1322 return;
1323
1324 socket_lock(inp->inp_socket, 0);
1325 lck_mtx_lock(&nstat_mtx);
1326 nstat_control_state *state;
1327 for (state = nstat_controls; state; state = state->ncs_next)
1328 {
1329 if ((state->ncs_watching & (1 << NSTAT_PROVIDER_TCP_KERNEL)) != 0)
1330 {
1331 // this client is watching tcp
1332 // acquire a reference for it
1333 cookie = nstat_tucookie_alloc_ref_locked(inp);
1334 if (cookie == NULL)
1335 continue;
1336 // add the source, if that fails, release the reference
1337 if (nstat_control_source_add(0, state,
1338 &nstat_tcp_provider, cookie) != 0)
1339 {
1340 nstat_tucookie_release_locked(cookie);
1341 break;
1342 }
1343 }
1344 }
1345 lck_mtx_unlock(&nstat_mtx);
1346 socket_unlock(inp->inp_socket, 0);
1347 }
1348
1349 __private_extern__ void
1350 nstat_pcb_detach(struct inpcb *inp)
1351 {
1352 nstat_control_state *state;
1353 nstat_src *src;
1354 tailq_head_nstat_src dead_list;
1355 struct nstat_tucookie *tucookie;
1356 errno_t result;
1357
1358 if (inp == NULL || (nstat_tcp_watchers == 0 && nstat_udp_watchers == 0))
1359 return;
1360
1361 TAILQ_INIT(&dead_list);
1362 lck_mtx_lock(&nstat_mtx);
1363 for (state = nstat_controls; state; state = state->ncs_next)
1364 {
1365 lck_mtx_lock(&state->ncs_mtx);
1366 TAILQ_FOREACH(src, &state->ncs_src_queue, ns_control_link)
1367 {
1368 nstat_provider_id_t provider_id = src->provider->nstat_provider_id;
1369 if (provider_id == NSTAT_PROVIDER_TCP_KERNEL || provider_id == NSTAT_PROVIDER_UDP_KERNEL)
1370 {
1371 tucookie = (struct nstat_tucookie *)src->cookie;
1372 if (tucookie->inp == inp)
1373 break;
1374 }
1375 }
1376
1377 if (src)
1378 {
1379 result = nstat_control_send_goodbye(state, src);
1380
1381 TAILQ_REMOVE(&state->ncs_src_queue, src, ns_control_link);
1382 TAILQ_INSERT_TAIL(&dead_list, src, ns_control_link);
1383 }
1384 lck_mtx_unlock(&state->ncs_mtx);
1385 }
1386 lck_mtx_unlock(&nstat_mtx);
1387
1388 while ((src = TAILQ_FIRST(&dead_list)))
1389 {
1390 TAILQ_REMOVE(&dead_list, src, ns_control_link);
1391 nstat_control_cleanup_source(NULL, src, TRUE);
1392 }
1393 }
1394
1395 __private_extern__ void
1396 nstat_pcb_cache(struct inpcb *inp)
1397 {
1398 nstat_control_state *state;
1399 nstat_src *src;
1400 struct nstat_tucookie *tucookie;
1401
1402 if (inp == NULL || nstat_udp_watchers == 0 ||
1403 inp->inp_nstat_refcnt == 0)
1404 return;
1405 VERIFY(SOCK_PROTO(inp->inp_socket) == IPPROTO_UDP);
1406 lck_mtx_lock(&nstat_mtx);
1407 for (state = nstat_controls; state; state = state->ncs_next) {
1408 lck_mtx_lock(&state->ncs_mtx);
1409 TAILQ_FOREACH(src, &state->ncs_src_queue, ns_control_link)
1410 {
1411 tucookie = (struct nstat_tucookie *)src->cookie;
1412 if (tucookie->inp == inp)
1413 {
1414 if (inp->inp_vflag & INP_IPV6)
1415 {
1416 in6_ip6_to_sockaddr(&inp->in6p_laddr,
1417 inp->inp_lport,
1418 &tucookie->local.v6,
1419 sizeof(tucookie->local));
1420 in6_ip6_to_sockaddr(&inp->in6p_faddr,
1421 inp->inp_fport,
1422 &tucookie->remote.v6,
1423 sizeof(tucookie->remote));
1424 }
1425 else if (inp->inp_vflag & INP_IPV4)
1426 {
1427 nstat_ip_to_sockaddr(&inp->inp_laddr,
1428 inp->inp_lport,
1429 &tucookie->local.v4,
1430 sizeof(tucookie->local));
1431 nstat_ip_to_sockaddr(&inp->inp_faddr,
1432 inp->inp_fport,
1433 &tucookie->remote.v4,
1434 sizeof(tucookie->remote));
1435 }
1436 if (inp->inp_last_outifp)
1437 tucookie->if_index =
1438 inp->inp_last_outifp->if_index;
1439
1440 tucookie->ifnet_properties = nstat_inpcb_to_flags(inp);
1441 tucookie->cached = true;
1442 break;
1443 }
1444 }
1445 lck_mtx_unlock(&state->ncs_mtx);
1446 }
1447 lck_mtx_unlock(&nstat_mtx);
1448 }
1449
1450 __private_extern__ void
1451 nstat_pcb_invalidate_cache(struct inpcb *inp)
1452 {
1453 nstat_control_state *state;
1454 nstat_src *src;
1455 struct nstat_tucookie *tucookie;
1456
1457 if (inp == NULL || nstat_udp_watchers == 0 ||
1458 inp->inp_nstat_refcnt == 0)
1459 return;
1460 VERIFY(SOCK_PROTO(inp->inp_socket) == IPPROTO_UDP);
1461 lck_mtx_lock(&nstat_mtx);
1462 for (state = nstat_controls; state; state = state->ncs_next) {
1463 lck_mtx_lock(&state->ncs_mtx);
1464 TAILQ_FOREACH(src, &state->ncs_src_queue, ns_control_link)
1465 {
1466 tucookie = (struct nstat_tucookie *)src->cookie;
1467 if (tucookie->inp == inp)
1468 {
1469 tucookie->cached = false;
1470 break;
1471 }
1472 }
1473 lck_mtx_unlock(&state->ncs_mtx);
1474 }
1475 lck_mtx_unlock(&nstat_mtx);
1476 }
1477
1478 static errno_t
1479 nstat_tcp_copy_descriptor(
1480 nstat_provider_cookie_t cookie,
1481 void *data,
1482 u_int32_t len)
1483 {
1484 if (len < sizeof(nstat_tcp_descriptor))
1485 {
1486 return EINVAL;
1487 }
1488
1489 if (nstat_tcp_gone(cookie))
1490 return EINVAL;
1491
1492 nstat_tcp_descriptor *desc = (nstat_tcp_descriptor*)data;
1493 struct nstat_tucookie *tucookie =
1494 (struct nstat_tucookie *)cookie;
1495 struct inpcb *inp = tucookie->inp;
1496 struct tcpcb *tp = intotcpcb(inp);
1497 bzero(desc, sizeof(*desc));
1498
1499 if (inp->inp_vflag & INP_IPV6)
1500 {
1501 in6_ip6_to_sockaddr(&inp->in6p_laddr, inp->inp_lport,
1502 &desc->local.v6, sizeof(desc->local));
1503 in6_ip6_to_sockaddr(&inp->in6p_faddr, inp->inp_fport,
1504 &desc->remote.v6, sizeof(desc->remote));
1505 }
1506 else if (inp->inp_vflag & INP_IPV4)
1507 {
1508 nstat_ip_to_sockaddr(&inp->inp_laddr, inp->inp_lport,
1509 &desc->local.v4, sizeof(desc->local));
1510 nstat_ip_to_sockaddr(&inp->inp_faddr, inp->inp_fport,
1511 &desc->remote.v4, sizeof(desc->remote));
1512 }
1513
1514 desc->state = intotcpcb(inp)->t_state;
1515 desc->ifindex = (inp->inp_last_outifp == NULL) ? 0 :
1516 inp->inp_last_outifp->if_index;
1517
1518 // danger - not locked, values could be bogus
1519 desc->txunacked = tp->snd_max - tp->snd_una;
1520 desc->txwindow = tp->snd_wnd;
1521 desc->txcwindow = tp->snd_cwnd;
1522
1523 if (CC_ALGO(tp)->name != NULL) {
1524 strlcpy(desc->cc_algo, CC_ALGO(tp)->name,
1525 sizeof(desc->cc_algo));
1526 }
1527
1528 struct socket *so = inp->inp_socket;
1529 if (so)
1530 {
1531 // TBD - take the socket lock around these to make sure
1532 // they're in sync?
1533 desc->upid = so->last_upid;
1534 desc->pid = so->last_pid;
1535 desc->traffic_class = so->so_traffic_class;
1536 if ((so->so_flags1 & SOF1_TRAFFIC_MGT_SO_BACKGROUND))
1537 desc->traffic_mgt_flags |= TRAFFIC_MGT_SO_BACKGROUND;
1538 if ((so->so_flags1 & SOF1_TRAFFIC_MGT_TCP_RECVBG))
1539 desc->traffic_mgt_flags |= TRAFFIC_MGT_TCP_RECVBG;
1540 proc_name(desc->pid, desc->pname, sizeof(desc->pname));
1541 if (desc->pname[0] == 0)
1542 {
1543 strlcpy(desc->pname, tucookie->pname,
1544 sizeof(desc->pname));
1545 }
1546 else
1547 {
1548 desc->pname[sizeof(desc->pname) - 1] = 0;
1549 strlcpy(tucookie->pname, desc->pname,
1550 sizeof(tucookie->pname));
1551 }
1552 memcpy(desc->uuid, so->last_uuid, sizeof(so->last_uuid));
1553 memcpy(desc->vuuid, so->so_vuuid, sizeof(so->so_vuuid));
1554 if (so->so_flags & SOF_DELEGATED) {
1555 desc->eupid = so->e_upid;
1556 desc->epid = so->e_pid;
1557 memcpy(desc->euuid, so->e_uuid, sizeof(so->e_uuid));
1558 } else {
1559 desc->eupid = desc->upid;
1560 desc->epid = desc->pid;
1561 memcpy(desc->euuid, desc->uuid, sizeof(desc->uuid));
1562 }
1563 desc->sndbufsize = so->so_snd.sb_hiwat;
1564 desc->sndbufused = so->so_snd.sb_cc;
1565 desc->rcvbufsize = so->so_rcv.sb_hiwat;
1566 desc->rcvbufused = so->so_rcv.sb_cc;
1567 }
1568
1569 tcp_get_connectivity_status(tp, &desc->connstatus);
1570 desc->ifnet_properties = nstat_inpcb_to_flags(inp);
1571 inp_get_activity_bitmap(inp, &desc->activity_bitmap);
1572 desc->start_timestamp = inp->inp_start_timestamp;
1573 desc->timestamp = mach_continuous_time();
1574 return 0;
1575 }
1576
1577 static bool
1578 nstat_tcpudp_reporting_allowed(nstat_provider_cookie_t cookie, nstat_provider_filter *filter, bool is_UDP)
1579 {
1580 bool retval = true;
1581
1582 if ((filter->npf_flags & (NSTAT_FILTER_IFNET_FLAGS|NSTAT_FILTER_SPECIFIC_USER)) != 0)
1583 {
1584 struct nstat_tucookie *tucookie = (struct nstat_tucookie *)cookie;
1585 struct inpcb *inp = tucookie->inp;
1586
1587 /* Only apply interface filter if at least one is allowed. */
1588 if ((filter->npf_flags & NSTAT_FILTER_IFNET_FLAGS) != 0)
1589 {
1590 uint16_t interface_properties = nstat_inpcb_to_flags(inp);
1591
1592 if ((filter->npf_flags & interface_properties) == 0)
1593 {
1594 // For UDP, we could have an undefined interface and yet transfers may have occurred.
1595 // We allow reporting if there have been transfers of the requested kind.
1596 // This is imperfect as we cannot account for the expensive attribute over wifi.
1597 // We also assume that cellular is expensive and we have no way to select for AWDL
1598 if (is_UDP)
1599 {
1600 do
1601 {
1602 if ((filter->npf_flags & (NSTAT_FILTER_ACCEPT_CELLULAR|NSTAT_FILTER_ACCEPT_EXPENSIVE)) &&
1603 (inp->inp_cstat->rxbytes || inp->inp_cstat->txbytes))
1604 {
1605 break;
1606 }
1607 if ((filter->npf_flags & NSTAT_FILTER_ACCEPT_WIFI) &&
1608 (inp->inp_wstat->rxbytes || inp->inp_wstat->txbytes))
1609 {
1610 break;
1611 }
1612 if ((filter->npf_flags & NSTAT_FILTER_ACCEPT_WIRED) &&
1613 (inp->inp_Wstat->rxbytes || inp->inp_Wstat->txbytes))
1614 {
1615 break;
1616 }
1617 return false;
1618 } while (0);
1619 }
1620 else
1621 {
1622 return false;
1623 }
1624 }
1625 }
1626
1627 if (((filter->npf_flags & NSTAT_FILTER_SPECIFIC_USER) != 0) && (retval))
1628 {
1629 struct socket *so = inp->inp_socket;
1630 retval = false;
1631
1632 if (so)
1633 {
1634 if (((filter->npf_flags & NSTAT_FILTER_SPECIFIC_USER_BY_PID) != 0) &&
1635 (filter->npf_pid == so->last_pid))
1636 {
1637 retval = true;
1638 }
1639 else if (((filter->npf_flags & NSTAT_FILTER_SPECIFIC_USER_BY_EPID) != 0) &&
1640 (filter->npf_pid == (so->so_flags & SOF_DELEGATED)? so->e_upid : so->last_pid))
1641 {
1642 retval = true;
1643 }
1644 else if (((filter->npf_flags & NSTAT_FILTER_SPECIFIC_USER_BY_UUID) != 0) &&
1645 (memcmp(filter->npf_uuid, so->last_uuid, sizeof(so->last_uuid)) == 0))
1646 {
1647 retval = true;
1648 }
1649 else if (((filter->npf_flags & NSTAT_FILTER_SPECIFIC_USER_BY_EUUID) != 0) &&
1650 (memcmp(filter->npf_uuid, (so->so_flags & SOF_DELEGATED)? so->e_uuid : so->last_uuid,
1651 sizeof(so->last_uuid)) == 0))
1652 {
1653 retval = true;
1654 }
1655 }
1656 }
1657 }
1658 return retval;
1659 }
1660
1661 static bool
1662 nstat_tcp_reporting_allowed(nstat_provider_cookie_t cookie, nstat_provider_filter *filter)
1663 {
1664 return nstat_tcpudp_reporting_allowed(cookie, filter, FALSE);
1665 }
1666
1667 static void
1668 nstat_init_tcp_provider(void)
1669 {
1670 bzero(&nstat_tcp_provider, sizeof(nstat_tcp_provider));
1671 nstat_tcp_provider.nstat_descriptor_length = sizeof(nstat_tcp_descriptor);
1672 nstat_tcp_provider.nstat_provider_id = NSTAT_PROVIDER_TCP_KERNEL;
1673 nstat_tcp_provider.nstat_lookup = nstat_tcp_lookup;
1674 nstat_tcp_provider.nstat_gone = nstat_tcp_gone;
1675 nstat_tcp_provider.nstat_counts = nstat_tcp_counts;
1676 nstat_tcp_provider.nstat_release = nstat_tcp_release;
1677 nstat_tcp_provider.nstat_watcher_add = nstat_tcp_add_watcher;
1678 nstat_tcp_provider.nstat_watcher_remove = nstat_tcp_remove_watcher;
1679 nstat_tcp_provider.nstat_copy_descriptor = nstat_tcp_copy_descriptor;
1680 nstat_tcp_provider.nstat_reporting_allowed = nstat_tcp_reporting_allowed;
1681 nstat_tcp_provider.next = nstat_providers;
1682 nstat_providers = &nstat_tcp_provider;
1683 }
1684
1685 #pragma mark -- UDP Provider --
1686
1687 static nstat_provider nstat_udp_provider;
1688
1689 static errno_t
1690 nstat_udp_lookup(
1691 const void *data,
1692 u_int32_t length,
1693 nstat_provider_cookie_t *out_cookie)
1694 {
1695 return nstat_tcpudp_lookup(&udbinfo, data, length, out_cookie);
1696 }
1697
1698 static int
1699 nstat_udp_gone(
1700 nstat_provider_cookie_t cookie)
1701 {
1702 struct nstat_tucookie *tucookie =
1703 (struct nstat_tucookie *)cookie;
1704 struct inpcb *inp;
1705
1706 return (!(inp = tucookie->inp) ||
1707 inp->inp_state == INPCB_STATE_DEAD) ? 1 : 0;
1708 }
1709
1710 static errno_t
1711 nstat_udp_counts(
1712 nstat_provider_cookie_t cookie,
1713 struct nstat_counts *out_counts,
1714 int *out_gone)
1715 {
1716 struct nstat_tucookie *tucookie =
1717 (struct nstat_tucookie *)cookie;
1718
1719 if (out_gone) *out_gone = 0;
1720
1721 // if the pcb is in the dead state, we should stop using it
1722 if (nstat_udp_gone(cookie))
1723 {
1724 if (out_gone) *out_gone = 1;
1725 if (!tucookie->inp)
1726 return EINVAL;
1727 }
1728 struct inpcb *inp = tucookie->inp;
1729
1730 atomic_get_64(out_counts->nstat_rxpackets, &inp->inp_stat->rxpackets);
1731 atomic_get_64(out_counts->nstat_rxbytes, &inp->inp_stat->rxbytes);
1732 atomic_get_64(out_counts->nstat_txpackets, &inp->inp_stat->txpackets);
1733 atomic_get_64(out_counts->nstat_txbytes, &inp->inp_stat->txbytes);
1734 atomic_get_64(out_counts->nstat_cell_rxbytes, &inp->inp_cstat->rxbytes);
1735 atomic_get_64(out_counts->nstat_cell_txbytes, &inp->inp_cstat->txbytes);
1736 atomic_get_64(out_counts->nstat_wifi_rxbytes, &inp->inp_wstat->rxbytes);
1737 atomic_get_64(out_counts->nstat_wifi_txbytes, &inp->inp_wstat->txbytes);
1738 atomic_get_64(out_counts->nstat_wired_rxbytes, &inp->inp_Wstat->rxbytes);
1739 atomic_get_64(out_counts->nstat_wired_txbytes, &inp->inp_Wstat->txbytes);
1740
1741 return 0;
1742 }
1743
1744 static void
1745 nstat_udp_release(
1746 nstat_provider_cookie_t cookie,
1747 int locked)
1748 {
1749 struct nstat_tucookie *tucookie =
1750 (struct nstat_tucookie *)cookie;
1751
1752 nstat_tucookie_release_internal(tucookie, locked);
1753 }
1754
1755 static errno_t
1756 nstat_udp_add_watcher(
1757 nstat_control_state *state,
1758 nstat_msg_add_all_srcs *req)
1759 {
1760 // There is a tricky issue around getting all UDP sockets added once
1761 // and only once. nstat_udp_new_pcb() is called prior to the new item
1762 // being placed on any lists where it might be found.
1763 // By locking the udpinfo.ipi_lock prior to marking the state as a watcher,
1764 // it should be impossible for a new socket to be added twice.
1765 // On the other hand, there is still a timing issue where a new socket
1766 // results in a call to nstat_udp_new_pcb() before this watcher
1767 // is instantiated and yet the socket doesn't make it into ipi_listhead
1768 // prior to the scan. <rdar://problem/30361716>
1769
1770 errno_t result;
1771
1772 lck_rw_lock_shared(udbinfo.ipi_lock);
1773 result = nstat_set_provider_filter(state, req);
1774
1775 if (result == 0) {
1776 struct inpcb *inp;
1777 struct nstat_tucookie *cookie;
1778
1779 OSIncrementAtomic(&nstat_udp_watchers);
1780
1781 // Add all current UDP inpcbs.
1782 LIST_FOREACH(inp, udbinfo.ipi_listhead, inp_list)
1783 {
1784 cookie = nstat_tucookie_alloc_ref(inp);
1785 if (cookie == NULL)
1786 continue;
1787 if (nstat_control_source_add(0, state, &nstat_udp_provider,
1788 cookie) != 0)
1789 {
1790 nstat_tucookie_release(cookie);
1791 break;
1792 }
1793 }
1794 }
1795
1796 lck_rw_done(udbinfo.ipi_lock);
1797
1798 return result;
1799 }
1800
1801 static void
1802 nstat_udp_remove_watcher(
1803 __unused nstat_control_state *state)
1804 {
1805 OSDecrementAtomic(&nstat_udp_watchers);
1806 }
1807
1808 __private_extern__ void
1809 nstat_udp_new_pcb(
1810 struct inpcb *inp)
1811 {
1812 struct nstat_tucookie *cookie;
1813
1814 inp->inp_start_timestamp = mach_continuous_time();
1815
1816 if (nstat_udp_watchers == 0)
1817 return;
1818
1819 socket_lock(inp->inp_socket, 0);
1820 lck_mtx_lock(&nstat_mtx);
1821 nstat_control_state *state;
1822 for (state = nstat_controls; state; state = state->ncs_next)
1823 {
1824 if ((state->ncs_watching & (1 << NSTAT_PROVIDER_UDP_KERNEL)) != 0)
1825 {
1826 // this client is watching tcp
1827 // acquire a reference for it
1828 cookie = nstat_tucookie_alloc_ref_locked(inp);
1829 if (cookie == NULL)
1830 continue;
1831 // add the source, if that fails, release the reference
1832 if (nstat_control_source_add(0, state,
1833 &nstat_udp_provider, cookie) != 0)
1834 {
1835 nstat_tucookie_release_locked(cookie);
1836 break;
1837 }
1838 }
1839 }
1840 lck_mtx_unlock(&nstat_mtx);
1841 socket_unlock(inp->inp_socket, 0);
1842 }
1843
1844 static errno_t
1845 nstat_udp_copy_descriptor(
1846 nstat_provider_cookie_t cookie,
1847 void *data,
1848 u_int32_t len)
1849 {
1850 if (len < sizeof(nstat_udp_descriptor))
1851 {
1852 return EINVAL;
1853 }
1854
1855 if (nstat_udp_gone(cookie))
1856 return EINVAL;
1857
1858 struct nstat_tucookie *tucookie =
1859 (struct nstat_tucookie *)cookie;
1860 nstat_udp_descriptor *desc = (nstat_udp_descriptor*)data;
1861 struct inpcb *inp = tucookie->inp;
1862
1863 bzero(desc, sizeof(*desc));
1864
1865 if (tucookie->cached == false) {
1866 if (inp->inp_vflag & INP_IPV6)
1867 {
1868 in6_ip6_to_sockaddr(&inp->in6p_laddr, inp->inp_lport,
1869 &desc->local.v6, sizeof(desc->local.v6));
1870 in6_ip6_to_sockaddr(&inp->in6p_faddr, inp->inp_fport,
1871 &desc->remote.v6, sizeof(desc->remote.v6));
1872 }
1873 else if (inp->inp_vflag & INP_IPV4)
1874 {
1875 nstat_ip_to_sockaddr(&inp->inp_laddr, inp->inp_lport,
1876 &desc->local.v4, sizeof(desc->local.v4));
1877 nstat_ip_to_sockaddr(&inp->inp_faddr, inp->inp_fport,
1878 &desc->remote.v4, sizeof(desc->remote.v4));
1879 }
1880 desc->ifnet_properties = nstat_inpcb_to_flags(inp);
1881 }
1882 else
1883 {
1884 if (inp->inp_vflag & INP_IPV6)
1885 {
1886 memcpy(&desc->local.v6, &tucookie->local.v6,
1887 sizeof(desc->local.v6));
1888 memcpy(&desc->remote.v6, &tucookie->remote.v6,
1889 sizeof(desc->remote.v6));
1890 }
1891 else if (inp->inp_vflag & INP_IPV4)
1892 {
1893 memcpy(&desc->local.v4, &tucookie->local.v4,
1894 sizeof(desc->local.v4));
1895 memcpy(&desc->remote.v4, &tucookie->remote.v4,
1896 sizeof(desc->remote.v4));
1897 }
1898 desc->ifnet_properties = tucookie->ifnet_properties;
1899 }
1900
1901 if (inp->inp_last_outifp)
1902 desc->ifindex = inp->inp_last_outifp->if_index;
1903 else
1904 desc->ifindex = tucookie->if_index;
1905
1906 struct socket *so = inp->inp_socket;
1907 if (so)
1908 {
1909 // TBD - take the socket lock around these to make sure
1910 // they're in sync?
1911 desc->upid = so->last_upid;
1912 desc->pid = so->last_pid;
1913 proc_name(desc->pid, desc->pname, sizeof(desc->pname));
1914 if (desc->pname[0] == 0)
1915 {
1916 strlcpy(desc->pname, tucookie->pname,
1917 sizeof(desc->pname));
1918 }
1919 else
1920 {
1921 desc->pname[sizeof(desc->pname) - 1] = 0;
1922 strlcpy(tucookie->pname, desc->pname,
1923 sizeof(tucookie->pname));
1924 }
1925 memcpy(desc->uuid, so->last_uuid, sizeof(so->last_uuid));
1926 memcpy(desc->vuuid, so->so_vuuid, sizeof(so->so_vuuid));
1927 if (so->so_flags & SOF_DELEGATED) {
1928 desc->eupid = so->e_upid;
1929 desc->epid = so->e_pid;
1930 memcpy(desc->euuid, so->e_uuid, sizeof(so->e_uuid));
1931 } else {
1932 desc->eupid = desc->upid;
1933 desc->epid = desc->pid;
1934 memcpy(desc->euuid, desc->uuid, sizeof(desc->uuid));
1935 }
1936 desc->rcvbufsize = so->so_rcv.sb_hiwat;
1937 desc->rcvbufused = so->so_rcv.sb_cc;
1938 desc->traffic_class = so->so_traffic_class;
1939 inp_get_activity_bitmap(inp, &desc->activity_bitmap);
1940 desc->start_timestamp = inp->inp_start_timestamp;
1941 desc->timestamp = mach_continuous_time();
1942 }
1943
1944 return 0;
1945 }
1946
1947 static bool
1948 nstat_udp_reporting_allowed(nstat_provider_cookie_t cookie, nstat_provider_filter *filter)
1949 {
1950 return nstat_tcpudp_reporting_allowed(cookie, filter, TRUE);
1951 }
1952
1953
1954 static void
1955 nstat_init_udp_provider(void)
1956 {
1957 bzero(&nstat_udp_provider, sizeof(nstat_udp_provider));
1958 nstat_udp_provider.nstat_provider_id = NSTAT_PROVIDER_UDP_KERNEL;
1959 nstat_udp_provider.nstat_descriptor_length = sizeof(nstat_udp_descriptor);
1960 nstat_udp_provider.nstat_lookup = nstat_udp_lookup;
1961 nstat_udp_provider.nstat_gone = nstat_udp_gone;
1962 nstat_udp_provider.nstat_counts = nstat_udp_counts;
1963 nstat_udp_provider.nstat_watcher_add = nstat_udp_add_watcher;
1964 nstat_udp_provider.nstat_watcher_remove = nstat_udp_remove_watcher;
1965 nstat_udp_provider.nstat_copy_descriptor = nstat_udp_copy_descriptor;
1966 nstat_udp_provider.nstat_release = nstat_udp_release;
1967 nstat_udp_provider.nstat_reporting_allowed = nstat_udp_reporting_allowed;
1968 nstat_udp_provider.next = nstat_providers;
1969 nstat_providers = &nstat_udp_provider;
1970 }
1971
1972
1973
1974 #pragma mark -- ifnet Provider --
1975
1976 static nstat_provider nstat_ifnet_provider;
1977
1978 /*
1979 * We store a pointer to the ifnet and the original threshold
1980 * requested by the client.
1981 */
1982 struct nstat_ifnet_cookie
1983 {
1984 struct ifnet *ifp;
1985 uint64_t threshold;
1986 };
1987
1988 static errno_t
1989 nstat_ifnet_lookup(
1990 const void *data,
1991 u_int32_t length,
1992 nstat_provider_cookie_t *out_cookie)
1993 {
1994 const nstat_ifnet_add_param *param = (const nstat_ifnet_add_param *)data;
1995 struct ifnet *ifp;
1996 boolean_t changed = FALSE;
1997 nstat_control_state *state;
1998 nstat_src *src;
1999 struct nstat_ifnet_cookie *cookie;
2000
2001 if (length < sizeof(*param) || param->threshold < 1024*1024)
2002 return EINVAL;
2003 if (nstat_privcheck != 0) {
2004 errno_t result = priv_check_cred(kauth_cred_get(),
2005 PRIV_NET_PRIVILEGED_NETWORK_STATISTICS, 0);
2006 if (result != 0)
2007 return result;
2008 }
2009 cookie = OSMalloc(sizeof(*cookie), nstat_malloc_tag);
2010 if (cookie == NULL)
2011 return ENOMEM;
2012 bzero(cookie, sizeof(*cookie));
2013
2014 ifnet_head_lock_shared();
2015 TAILQ_FOREACH(ifp, &ifnet_head, if_link)
2016 {
2017 ifnet_lock_exclusive(ifp);
2018 if (ifp->if_index == param->ifindex)
2019 {
2020 cookie->ifp = ifp;
2021 cookie->threshold = param->threshold;
2022 *out_cookie = cookie;
2023 if (!ifp->if_data_threshold ||
2024 ifp->if_data_threshold > param->threshold)
2025 {
2026 changed = TRUE;
2027 ifp->if_data_threshold = param->threshold;
2028 }
2029 ifnet_lock_done(ifp);
2030 ifnet_reference(ifp);
2031 break;
2032 }
2033 ifnet_lock_done(ifp);
2034 }
2035 ifnet_head_done();
2036
2037 /*
2038 * When we change the threshold to something smaller, we notify
2039 * all of our clients with a description message.
2040 * We won't send a message to the client we are currently serving
2041 * because it has no `ifnet source' yet.
2042 */
2043 if (changed)
2044 {
2045 lck_mtx_lock(&nstat_mtx);
2046 for (state = nstat_controls; state; state = state->ncs_next)
2047 {
2048 lck_mtx_lock(&state->ncs_mtx);
2049 TAILQ_FOREACH(src, &state->ncs_src_queue, ns_control_link)
2050 {
2051 if (src->provider != &nstat_ifnet_provider)
2052 continue;
2053 nstat_control_send_description(state, src, 0, 0);
2054 }
2055 lck_mtx_unlock(&state->ncs_mtx);
2056 }
2057 lck_mtx_unlock(&nstat_mtx);
2058 }
2059 if (cookie->ifp == NULL)
2060 OSFree(cookie, sizeof(*cookie), nstat_malloc_tag);
2061
2062 return ifp ? 0 : EINVAL;
2063 }
2064
2065 static int
2066 nstat_ifnet_gone(
2067 nstat_provider_cookie_t cookie)
2068 {
2069 struct ifnet *ifp;
2070 struct nstat_ifnet_cookie *ifcookie =
2071 (struct nstat_ifnet_cookie *)cookie;
2072
2073 ifnet_head_lock_shared();
2074 TAILQ_FOREACH(ifp, &ifnet_head, if_link)
2075 {
2076 if (ifp == ifcookie->ifp)
2077 break;
2078 }
2079 ifnet_head_done();
2080
2081 return ifp ? 0 : 1;
2082 }
2083
2084 static errno_t
2085 nstat_ifnet_counts(
2086 nstat_provider_cookie_t cookie,
2087 struct nstat_counts *out_counts,
2088 int *out_gone)
2089 {
2090 struct nstat_ifnet_cookie *ifcookie =
2091 (struct nstat_ifnet_cookie *)cookie;
2092 struct ifnet *ifp = ifcookie->ifp;
2093
2094 if (out_gone) *out_gone = 0;
2095
2096 // if the ifnet is gone, we should stop using it
2097 if (nstat_ifnet_gone(cookie))
2098 {
2099 if (out_gone) *out_gone = 1;
2100 return EINVAL;
2101 }
2102
2103 bzero(out_counts, sizeof(*out_counts));
2104 out_counts->nstat_rxpackets = ifp->if_ipackets;
2105 out_counts->nstat_rxbytes = ifp->if_ibytes;
2106 out_counts->nstat_txpackets = ifp->if_opackets;
2107 out_counts->nstat_txbytes = ifp->if_obytes;
2108 out_counts->nstat_cell_rxbytes = out_counts->nstat_cell_txbytes = 0;
2109 return 0;
2110 }
2111
2112 static void
2113 nstat_ifnet_release(
2114 nstat_provider_cookie_t cookie,
2115 __unused int locked)
2116 {
2117 struct nstat_ifnet_cookie *ifcookie;
2118 struct ifnet *ifp;
2119 nstat_control_state *state;
2120 nstat_src *src;
2121 uint64_t minthreshold = UINT64_MAX;
2122
2123 /*
2124 * Find all the clients that requested a threshold
2125 * for this ifnet and re-calculate if_data_threshold.
2126 */
2127 lck_mtx_lock(&nstat_mtx);
2128 for (state = nstat_controls; state; state = state->ncs_next)
2129 {
2130 lck_mtx_lock(&state->ncs_mtx);
2131 TAILQ_FOREACH(src, &state->ncs_src_queue, ns_control_link)
2132 {
2133 /* Skip the provider we are about to detach. */
2134 if (src->provider != &nstat_ifnet_provider ||
2135 src->cookie == cookie)
2136 continue;
2137 ifcookie = (struct nstat_ifnet_cookie *)src->cookie;
2138 if (ifcookie->threshold < minthreshold)
2139 minthreshold = ifcookie->threshold;
2140 }
2141 lck_mtx_unlock(&state->ncs_mtx);
2142 }
2143 lck_mtx_unlock(&nstat_mtx);
2144 /*
2145 * Reset if_data_threshold or disable it.
2146 */
2147 ifcookie = (struct nstat_ifnet_cookie *)cookie;
2148 ifp = ifcookie->ifp;
2149 if (ifnet_is_attached(ifp, 1)) {
2150 ifnet_lock_exclusive(ifp);
2151 if (minthreshold == UINT64_MAX)
2152 ifp->if_data_threshold = 0;
2153 else
2154 ifp->if_data_threshold = minthreshold;
2155 ifnet_lock_done(ifp);
2156 ifnet_decr_iorefcnt(ifp);
2157 }
2158 ifnet_release(ifp);
2159 OSFree(ifcookie, sizeof(*ifcookie), nstat_malloc_tag);
2160 }
2161
2162 static void
2163 nstat_ifnet_copy_link_status(
2164 struct ifnet *ifp,
2165 struct nstat_ifnet_descriptor *desc)
2166 {
2167 struct if_link_status *ifsr = ifp->if_link_status;
2168 nstat_ifnet_desc_link_status *link_status = &desc->link_status;
2169
2170 link_status->link_status_type = NSTAT_IFNET_DESC_LINK_STATUS_TYPE_NONE;
2171 if (ifsr == NULL)
2172 return;
2173
2174 lck_rw_lock_shared(&ifp->if_link_status_lock);
2175
2176 if (ifp->if_type == IFT_CELLULAR) {
2177
2178 nstat_ifnet_desc_cellular_status *cell_status = &link_status->u.cellular;
2179 struct if_cellular_status_v1 *if_cell_sr =
2180 &ifsr->ifsr_u.ifsr_cell.if_cell_u.if_status_v1;
2181
2182 if (ifsr->ifsr_version != IF_CELLULAR_STATUS_REPORT_VERSION_1)
2183 goto done;
2184
2185 link_status->link_status_type = NSTAT_IFNET_DESC_LINK_STATUS_TYPE_CELLULAR;
2186
2187 if (if_cell_sr->valid_bitmask & IF_CELL_LINK_QUALITY_METRIC_VALID) {
2188 cell_status->valid_bitmask |= NSTAT_IFNET_DESC_CELL_LINK_QUALITY_METRIC_VALID;
2189 cell_status->link_quality_metric = if_cell_sr->link_quality_metric;
2190 }
2191 if (if_cell_sr->valid_bitmask & IF_CELL_UL_EFFECTIVE_BANDWIDTH_VALID) {
2192 cell_status->valid_bitmask |= NSTAT_IFNET_DESC_CELL_UL_EFFECTIVE_BANDWIDTH_VALID;
2193 cell_status->ul_effective_bandwidth = if_cell_sr->ul_effective_bandwidth;
2194 }
2195 if (if_cell_sr->valid_bitmask & IF_CELL_UL_MAX_BANDWIDTH_VALID) {
2196 cell_status->valid_bitmask |= NSTAT_IFNET_DESC_CELL_UL_MAX_BANDWIDTH_VALID;
2197 cell_status->ul_max_bandwidth = if_cell_sr->ul_max_bandwidth;
2198 }
2199 if (if_cell_sr->valid_bitmask & IF_CELL_UL_MIN_LATENCY_VALID) {
2200 cell_status->valid_bitmask |= NSTAT_IFNET_DESC_CELL_UL_MIN_LATENCY_VALID;
2201 cell_status->ul_min_latency = if_cell_sr->ul_min_latency;
2202 }
2203 if (if_cell_sr->valid_bitmask & IF_CELL_UL_EFFECTIVE_LATENCY_VALID) {
2204 cell_status->valid_bitmask |= NSTAT_IFNET_DESC_CELL_UL_EFFECTIVE_LATENCY_VALID;
2205 cell_status->ul_effective_latency = if_cell_sr->ul_effective_latency;
2206 }
2207 if (if_cell_sr->valid_bitmask & IF_CELL_UL_MAX_LATENCY_VALID) {
2208 cell_status->valid_bitmask |= NSTAT_IFNET_DESC_CELL_UL_MAX_LATENCY_VALID;
2209 cell_status->ul_max_latency = if_cell_sr->ul_max_latency;
2210 }
2211 if (if_cell_sr->valid_bitmask & IF_CELL_UL_RETXT_LEVEL_VALID) {
2212 cell_status->valid_bitmask |= NSTAT_IFNET_DESC_CELL_UL_RETXT_LEVEL_VALID;
2213 if (if_cell_sr->ul_retxt_level == IF_CELL_UL_RETXT_LEVEL_NONE)
2214 cell_status->ul_retxt_level = NSTAT_IFNET_DESC_CELL_UL_RETXT_LEVEL_NONE;
2215 else if (if_cell_sr->ul_retxt_level == IF_CELL_UL_RETXT_LEVEL_LOW)
2216 cell_status->ul_retxt_level = NSTAT_IFNET_DESC_CELL_UL_RETXT_LEVEL_LOW;
2217 else if (if_cell_sr->ul_retxt_level == IF_CELL_UL_RETXT_LEVEL_MEDIUM)
2218 cell_status->ul_retxt_level = NSTAT_IFNET_DESC_CELL_UL_RETXT_LEVEL_MEDIUM;
2219 else if (if_cell_sr->ul_retxt_level == IF_CELL_UL_RETXT_LEVEL_HIGH)
2220 cell_status->ul_retxt_level = NSTAT_IFNET_DESC_CELL_UL_RETXT_LEVEL_HIGH;
2221 else
2222 cell_status->valid_bitmask &= ~NSTAT_IFNET_DESC_CELL_UL_RETXT_LEVEL_VALID;
2223 }
2224 if (if_cell_sr->valid_bitmask & IF_CELL_UL_BYTES_LOST_VALID) {
2225 cell_status->valid_bitmask |= NSTAT_IFNET_DESC_CELL_UL_BYTES_LOST_VALID;
2226 cell_status->ul_bytes_lost = if_cell_sr->ul_bytes_lost;
2227 }
2228 if (if_cell_sr->valid_bitmask & IF_CELL_UL_MIN_QUEUE_SIZE_VALID) {
2229 cell_status->valid_bitmask |= NSTAT_IFNET_DESC_CELL_UL_MIN_QUEUE_SIZE_VALID;
2230 cell_status->ul_min_queue_size = if_cell_sr->ul_min_queue_size;
2231 }
2232 if (if_cell_sr->valid_bitmask & IF_CELL_UL_AVG_QUEUE_SIZE_VALID) {
2233 cell_status->valid_bitmask |= NSTAT_IFNET_DESC_CELL_UL_AVG_QUEUE_SIZE_VALID;
2234 cell_status->ul_avg_queue_size = if_cell_sr->ul_avg_queue_size;
2235 }
2236 if (if_cell_sr->valid_bitmask & IF_CELL_UL_MAX_QUEUE_SIZE_VALID) {
2237 cell_status->valid_bitmask |= NSTAT_IFNET_DESC_CELL_UL_MAX_QUEUE_SIZE_VALID;
2238 cell_status->ul_max_queue_size = if_cell_sr->ul_max_queue_size;
2239 }
2240 if (if_cell_sr->valid_bitmask & IF_CELL_DL_EFFECTIVE_BANDWIDTH_VALID) {
2241 cell_status->valid_bitmask |= NSTAT_IFNET_DESC_CELL_DL_EFFECTIVE_BANDWIDTH_VALID;
2242 cell_status->dl_effective_bandwidth = if_cell_sr->dl_effective_bandwidth;
2243 }
2244 if (if_cell_sr->valid_bitmask & IF_CELL_DL_MAX_BANDWIDTH_VALID) {
2245 cell_status->valid_bitmask |= NSTAT_IFNET_DESC_CELL_DL_MAX_BANDWIDTH_VALID;
2246 cell_status->dl_max_bandwidth = if_cell_sr->dl_max_bandwidth;
2247 }
2248 if (if_cell_sr->valid_bitmask & IF_CELL_CONFIG_INACTIVITY_TIME_VALID) {
2249 cell_status->valid_bitmask |= NSTAT_IFNET_DESC_CELL_CONFIG_INACTIVITY_TIME_VALID;
2250 cell_status->config_inactivity_time = if_cell_sr->config_inactivity_time;
2251 }
2252 if (if_cell_sr->valid_bitmask & IF_CELL_CONFIG_BACKOFF_TIME_VALID) {
2253 cell_status->valid_bitmask |= NSTAT_IFNET_DESC_CELL_CONFIG_BACKOFF_TIME_VALID;
2254 cell_status->config_backoff_time = if_cell_sr->config_backoff_time;
2255 }
2256 if (if_cell_sr->valid_bitmask & IF_CELL_UL_MSS_RECOMMENDED_VALID) {
2257 cell_status->valid_bitmask |= NSTAT_IFNET_DESC_CELL_MSS_RECOMMENDED_VALID;
2258 cell_status->mss_recommended = if_cell_sr->mss_recommended;
2259 }
2260 } else if (ifp->if_subfamily == IFNET_SUBFAMILY_WIFI) {
2261
2262 nstat_ifnet_desc_wifi_status *wifi_status = &link_status->u.wifi;
2263 struct if_wifi_status_v1 *if_wifi_sr =
2264 &ifsr->ifsr_u.ifsr_wifi.if_wifi_u.if_status_v1;
2265
2266 if (ifsr->ifsr_version != IF_WIFI_STATUS_REPORT_VERSION_1)
2267 goto done;
2268
2269 link_status->link_status_type = NSTAT_IFNET_DESC_LINK_STATUS_TYPE_WIFI;
2270
2271 if (if_wifi_sr->valid_bitmask & IF_WIFI_LINK_QUALITY_METRIC_VALID) {
2272 wifi_status->valid_bitmask |= NSTAT_IFNET_DESC_WIFI_LINK_QUALITY_METRIC_VALID;
2273 wifi_status->link_quality_metric = if_wifi_sr->link_quality_metric;
2274 }
2275 if (if_wifi_sr->valid_bitmask & IF_WIFI_UL_EFFECTIVE_BANDWIDTH_VALID) {
2276 wifi_status->valid_bitmask |= NSTAT_IFNET_DESC_WIFI_UL_EFFECTIVE_BANDWIDTH_VALID;
2277 wifi_status->ul_effective_bandwidth = if_wifi_sr->ul_effective_bandwidth;
2278 }
2279 if (if_wifi_sr->valid_bitmask & IF_WIFI_UL_MAX_BANDWIDTH_VALID) {
2280 wifi_status->valid_bitmask |= NSTAT_IFNET_DESC_WIFI_UL_MAX_BANDWIDTH_VALID;
2281 wifi_status->ul_max_bandwidth = if_wifi_sr->ul_max_bandwidth;
2282 }
2283 if (if_wifi_sr->valid_bitmask & IF_WIFI_UL_MIN_LATENCY_VALID) {
2284 wifi_status->valid_bitmask |= NSTAT_IFNET_DESC_WIFI_UL_MIN_LATENCY_VALID;
2285 wifi_status->ul_min_latency = if_wifi_sr->ul_min_latency;
2286 }
2287 if (if_wifi_sr->valid_bitmask & IF_WIFI_UL_EFFECTIVE_LATENCY_VALID) {
2288 wifi_status->valid_bitmask |= NSTAT_IFNET_DESC_WIFI_UL_EFFECTIVE_LATENCY_VALID;
2289 wifi_status->ul_effective_latency = if_wifi_sr->ul_effective_latency;
2290 }
2291 if (if_wifi_sr->valid_bitmask & IF_WIFI_UL_MAX_LATENCY_VALID) {
2292 wifi_status->valid_bitmask |= NSTAT_IFNET_DESC_WIFI_UL_MAX_LATENCY_VALID;
2293 wifi_status->ul_max_latency = if_wifi_sr->ul_max_latency;
2294 }
2295 if (if_wifi_sr->valid_bitmask & IF_WIFI_UL_RETXT_LEVEL_VALID) {
2296 wifi_status->valid_bitmask |= NSTAT_IFNET_DESC_WIFI_UL_RETXT_LEVEL_VALID;
2297 if (if_wifi_sr->ul_retxt_level == IF_WIFI_UL_RETXT_LEVEL_NONE)
2298 wifi_status->ul_retxt_level = NSTAT_IFNET_DESC_WIFI_UL_RETXT_LEVEL_NONE;
2299 else if (if_wifi_sr->ul_retxt_level == IF_WIFI_UL_RETXT_LEVEL_LOW)
2300 wifi_status->ul_retxt_level = NSTAT_IFNET_DESC_WIFI_UL_RETXT_LEVEL_LOW;
2301 else if (if_wifi_sr->ul_retxt_level == IF_WIFI_UL_RETXT_LEVEL_MEDIUM)
2302 wifi_status->ul_retxt_level = NSTAT_IFNET_DESC_WIFI_UL_RETXT_LEVEL_MEDIUM;
2303 else if (if_wifi_sr->ul_retxt_level == IF_WIFI_UL_RETXT_LEVEL_HIGH)
2304 wifi_status->ul_retxt_level = NSTAT_IFNET_DESC_WIFI_UL_RETXT_LEVEL_HIGH;
2305 else
2306 wifi_status->valid_bitmask &= ~NSTAT_IFNET_DESC_WIFI_UL_RETXT_LEVEL_VALID;
2307 }
2308 if (if_wifi_sr->valid_bitmask & IF_WIFI_UL_BYTES_LOST_VALID) {
2309 wifi_status->valid_bitmask |= NSTAT_IFNET_DESC_WIFI_UL_BYTES_LOST_VALID;
2310 wifi_status->ul_bytes_lost = if_wifi_sr->ul_bytes_lost;
2311 }
2312 if (if_wifi_sr->valid_bitmask & IF_WIFI_UL_ERROR_RATE_VALID) {
2313 wifi_status->valid_bitmask |= NSTAT_IFNET_DESC_WIFI_UL_ERROR_RATE_VALID;
2314 wifi_status->ul_error_rate = if_wifi_sr->ul_error_rate;
2315 }
2316 if (if_wifi_sr->valid_bitmask & IF_WIFI_DL_EFFECTIVE_BANDWIDTH_VALID) {
2317 wifi_status->valid_bitmask |= NSTAT_IFNET_DESC_WIFI_DL_EFFECTIVE_BANDWIDTH_VALID;
2318 wifi_status->dl_effective_bandwidth = if_wifi_sr->dl_effective_bandwidth;
2319 }
2320 if (if_wifi_sr->valid_bitmask & IF_WIFI_DL_MAX_BANDWIDTH_VALID) {
2321 wifi_status->valid_bitmask |= NSTAT_IFNET_DESC_WIFI_DL_MAX_BANDWIDTH_VALID;
2322 wifi_status->dl_max_bandwidth = if_wifi_sr->dl_max_bandwidth;
2323 }
2324 if (if_wifi_sr->valid_bitmask & IF_WIFI_DL_MIN_LATENCY_VALID) {
2325 wifi_status->valid_bitmask |= NSTAT_IFNET_DESC_WIFI_DL_MIN_LATENCY_VALID;
2326 wifi_status->dl_min_latency = if_wifi_sr->dl_min_latency;
2327 }
2328 if (if_wifi_sr->valid_bitmask & IF_WIFI_DL_EFFECTIVE_LATENCY_VALID) {
2329 wifi_status->valid_bitmask |= NSTAT_IFNET_DESC_WIFI_DL_EFFECTIVE_LATENCY_VALID;
2330 wifi_status->dl_effective_latency = if_wifi_sr->dl_effective_latency;
2331 }
2332 if (if_wifi_sr->valid_bitmask & IF_WIFI_DL_MAX_LATENCY_VALID) {
2333 wifi_status->valid_bitmask |= NSTAT_IFNET_DESC_WIFI_DL_MAX_LATENCY_VALID;
2334 wifi_status->dl_max_latency = if_wifi_sr->dl_max_latency;
2335 }
2336 if (if_wifi_sr->valid_bitmask & IF_WIFI_DL_ERROR_RATE_VALID) {
2337 wifi_status->valid_bitmask |= NSTAT_IFNET_DESC_WIFI_DL_ERROR_RATE_VALID;
2338 wifi_status->dl_error_rate = if_wifi_sr->dl_error_rate;
2339 }
2340 if (if_wifi_sr->valid_bitmask & IF_WIFI_CONFIG_FREQUENCY_VALID) {
2341 wifi_status->valid_bitmask |= NSTAT_IFNET_DESC_WIFI_CONFIG_FREQUENCY_VALID;
2342 if (if_wifi_sr->config_frequency == IF_WIFI_CONFIG_FREQUENCY_2_4_GHZ)
2343 wifi_status->config_frequency = NSTAT_IFNET_DESC_WIFI_CONFIG_FREQUENCY_2_4_GHZ;
2344 else if (if_wifi_sr->config_frequency == IF_WIFI_CONFIG_FREQUENCY_5_0_GHZ)
2345 wifi_status->config_frequency = NSTAT_IFNET_DESC_WIFI_CONFIG_FREQUENCY_5_0_GHZ;
2346 else
2347 wifi_status->valid_bitmask &= ~NSTAT_IFNET_DESC_WIFI_CONFIG_FREQUENCY_VALID;
2348 }
2349 if (if_wifi_sr->valid_bitmask & IF_WIFI_CONFIG_MULTICAST_RATE_VALID) {
2350 wifi_status->valid_bitmask |= NSTAT_IFNET_DESC_WIFI_CONFIG_MULTICAST_RATE_VALID;
2351 wifi_status->config_multicast_rate = if_wifi_sr->config_multicast_rate;
2352 }
2353 if (if_wifi_sr->valid_bitmask & IF_WIFI_CONFIG_SCAN_COUNT_VALID) {
2354 wifi_status->valid_bitmask |= NSTAT_IFNET_DESC_WIFI_CONFIG_SCAN_COUNT_VALID;
2355 wifi_status->scan_count = if_wifi_sr->scan_count;
2356 }
2357 if (if_wifi_sr->valid_bitmask & IF_WIFI_CONFIG_SCAN_DURATION_VALID) {
2358 wifi_status->valid_bitmask |= NSTAT_IFNET_DESC_WIFI_CONFIG_SCAN_DURATION_VALID;
2359 wifi_status->scan_duration = if_wifi_sr->scan_duration;
2360 }
2361 }
2362
2363 done:
2364 lck_rw_done(&ifp->if_link_status_lock);
2365 }
2366
2367 static u_int64_t nstat_ifnet_last_report_time = 0;
2368 extern int tcp_report_stats_interval;
2369
2370 static void
2371 nstat_ifnet_compute_percentages(struct if_tcp_ecn_perf_stat *ifst)
2372 {
2373 /* Retransmit percentage */
2374 if (ifst->total_rxmitpkts > 0 && ifst->total_txpkts > 0) {
2375 /* shift by 10 for precision */
2376 ifst->rxmit_percent =
2377 ((ifst->total_rxmitpkts << 10) * 100) / ifst->total_txpkts;
2378 } else {
2379 ifst->rxmit_percent = 0;
2380 }
2381
2382 /* Out-of-order percentage */
2383 if (ifst->total_oopkts > 0 && ifst->total_rxpkts > 0) {
2384 /* shift by 10 for precision */
2385 ifst->oo_percent =
2386 ((ifst->total_oopkts << 10) * 100) / ifst->total_rxpkts;
2387 } else {
2388 ifst->oo_percent = 0;
2389 }
2390
2391 /* Reorder percentage */
2392 if (ifst->total_reorderpkts > 0 &&
2393 (ifst->total_txpkts + ifst->total_rxpkts) > 0) {
2394 /* shift by 10 for precision */
2395 ifst->reorder_percent =
2396 ((ifst->total_reorderpkts << 10) * 100) /
2397 (ifst->total_txpkts + ifst->total_rxpkts);
2398 } else {
2399 ifst->reorder_percent = 0;
2400 }
2401 }
2402
2403 static void
2404 nstat_ifnet_normalize_counter(struct if_tcp_ecn_stat *if_st)
2405 {
2406 u_int64_t ecn_on_conn, ecn_off_conn;
2407
2408 if (if_st == NULL)
2409 return;
2410 ecn_on_conn = if_st->ecn_client_success +
2411 if_st->ecn_server_success;
2412 ecn_off_conn = if_st->ecn_off_conn +
2413 (if_st->ecn_client_setup - if_st->ecn_client_success) +
2414 (if_st->ecn_server_setup - if_st->ecn_server_success);
2415
2416 /*
2417 * report sack episodes, rst_drop and rxmit_drop
2418 * as a ratio per connection, shift by 10 for precision
2419 */
2420 if (ecn_on_conn > 0) {
2421 if_st->ecn_on.sack_episodes =
2422 (if_st->ecn_on.sack_episodes << 10) / ecn_on_conn;
2423 if_st->ecn_on.rst_drop =
2424 (if_st->ecn_on.rst_drop << 10) * 100 / ecn_on_conn;
2425 if_st->ecn_on.rxmit_drop =
2426 (if_st->ecn_on.rxmit_drop << 10) * 100 / ecn_on_conn;
2427 } else {
2428 /* set to zero, just in case */
2429 if_st->ecn_on.sack_episodes = 0;
2430 if_st->ecn_on.rst_drop = 0;
2431 if_st->ecn_on.rxmit_drop = 0;
2432 }
2433
2434 if (ecn_off_conn > 0) {
2435 if_st->ecn_off.sack_episodes =
2436 (if_st->ecn_off.sack_episodes << 10) / ecn_off_conn;
2437 if_st->ecn_off.rst_drop =
2438 (if_st->ecn_off.rst_drop << 10) * 100 / ecn_off_conn;
2439 if_st->ecn_off.rxmit_drop =
2440 (if_st->ecn_off.rxmit_drop << 10) * 100 / ecn_off_conn;
2441 } else {
2442 if_st->ecn_off.sack_episodes = 0;
2443 if_st->ecn_off.rst_drop = 0;
2444 if_st->ecn_off.rxmit_drop = 0;
2445 }
2446 if_st->ecn_total_conn = ecn_off_conn + ecn_on_conn;
2447 }
2448
2449 static void
2450 nstat_ifnet_report_ecn_stats(void)
2451 {
2452 u_int64_t uptime, last_report_time;
2453 struct nstat_sysinfo_data data;
2454 struct nstat_sysinfo_ifnet_ecn_stats *st;
2455 struct ifnet *ifp;
2456
2457 uptime = net_uptime();
2458
2459 if ((int)(uptime - nstat_ifnet_last_report_time) <
2460 tcp_report_stats_interval)
2461 return;
2462
2463 last_report_time = nstat_ifnet_last_report_time;
2464 nstat_ifnet_last_report_time = uptime;
2465 data.flags = NSTAT_SYSINFO_IFNET_ECN_STATS;
2466 st = &data.u.ifnet_ecn_stats;
2467
2468 ifnet_head_lock_shared();
2469 TAILQ_FOREACH(ifp, &ifnet_head, if_link) {
2470 if (ifp->if_ipv4_stat == NULL || ifp->if_ipv6_stat == NULL)
2471 continue;
2472
2473 if (!IF_FULLY_ATTACHED(ifp))
2474 continue;
2475
2476 /* Limit reporting to Wifi, Ethernet and cellular. */
2477 if (!(IFNET_IS_ETHERNET(ifp) || IFNET_IS_CELLULAR(ifp)))
2478 continue;
2479
2480 bzero(st, sizeof(*st));
2481 if (IFNET_IS_CELLULAR(ifp)) {
2482 st->ifnet_type = NSTAT_IFNET_ECN_TYPE_CELLULAR;
2483 } else if (IFNET_IS_WIFI(ifp)) {
2484 st->ifnet_type = NSTAT_IFNET_ECN_TYPE_WIFI;
2485 } else {
2486 st->ifnet_type = NSTAT_IFNET_ECN_TYPE_ETHERNET;
2487 }
2488 data.unsent_data_cnt = ifp->if_unsent_data_cnt;
2489 /* skip if there was no update since last report */
2490 if (ifp->if_ipv4_stat->timestamp <= 0 ||
2491 ifp->if_ipv4_stat->timestamp < last_report_time)
2492 goto v6;
2493 st->ifnet_proto = NSTAT_IFNET_ECN_PROTO_IPV4;
2494 /* compute percentages using packet counts */
2495 nstat_ifnet_compute_percentages(&ifp->if_ipv4_stat->ecn_on);
2496 nstat_ifnet_compute_percentages(&ifp->if_ipv4_stat->ecn_off);
2497 nstat_ifnet_normalize_counter(ifp->if_ipv4_stat);
2498 bcopy(ifp->if_ipv4_stat, &st->ecn_stat,
2499 sizeof(st->ecn_stat));
2500 nstat_sysinfo_send_data(&data);
2501 bzero(ifp->if_ipv4_stat, sizeof(*ifp->if_ipv4_stat));
2502
2503 v6:
2504 /* skip if there was no update since last report */
2505 if (ifp->if_ipv6_stat->timestamp <= 0 ||
2506 ifp->if_ipv6_stat->timestamp < last_report_time)
2507 continue;
2508 st->ifnet_proto = NSTAT_IFNET_ECN_PROTO_IPV6;
2509
2510 /* compute percentages using packet counts */
2511 nstat_ifnet_compute_percentages(&ifp->if_ipv6_stat->ecn_on);
2512 nstat_ifnet_compute_percentages(&ifp->if_ipv6_stat->ecn_off);
2513 nstat_ifnet_normalize_counter(ifp->if_ipv6_stat);
2514 bcopy(ifp->if_ipv6_stat, &st->ecn_stat,
2515 sizeof(st->ecn_stat));
2516 nstat_sysinfo_send_data(&data);
2517
2518 /* Zero the stats in ifp */
2519 bzero(ifp->if_ipv6_stat, sizeof(*ifp->if_ipv6_stat));
2520 }
2521 ifnet_head_done();
2522
2523 }
2524
2525 /* Some thresholds to determine Low Iternet mode */
2526 #define NSTAT_LIM_DL_MAX_BANDWIDTH_THRESHOLD 1000000 /* 1 Mbps */
2527 #define NSTAT_LIM_UL_MAX_BANDWIDTH_THRESHOLD 500000 /* 500 Kbps */
2528 #define NSTAT_LIM_UL_MIN_RTT_THRESHOLD 1000 /* 1 second */
2529 #define NSTAT_LIM_CONN_TIMEOUT_PERCENT_THRESHOLD (10 << 10) /* 10 percent connection timeouts */
2530 #define NSTAT_LIM_PACKET_LOSS_PERCENT_THRESHOLD (2 << 10) /* 2 percent packet loss rate */
2531
2532 static boolean_t
2533 nstat_lim_activity_check(struct if_lim_perf_stat *st)
2534 {
2535 /* check that the current activity is enough to report stats */
2536 if (st->lim_total_txpkts < nstat_lim_min_tx_pkts ||
2537 st->lim_total_rxpkts < nstat_lim_min_rx_pkts ||
2538 st->lim_conn_attempts == 0)
2539 return (FALSE);
2540
2541 /*
2542 * Compute percentages if there was enough activity. Use
2543 * shift-left by 10 to preserve precision.
2544 */
2545 st->lim_packet_loss_percent = ((st->lim_total_retxpkts << 10) /
2546 st->lim_total_txpkts) * 100;
2547
2548 st->lim_packet_ooo_percent = ((st->lim_total_oopkts << 10) /
2549 st->lim_total_rxpkts) * 100;
2550
2551 st->lim_conn_timeout_percent = ((st->lim_conn_timeouts << 10) /
2552 st->lim_conn_attempts) * 100;
2553
2554 /*
2555 * Is Low Internet detected? First order metrics are bandwidth
2556 * and RTT. If these metrics are below the minimum thresholds
2557 * defined then the network attachment can be classified as
2558 * having Low Internet capacity.
2559 *
2560 * High connection timeout rate also indicates Low Internet
2561 * capacity.
2562 */
2563 if (st->lim_dl_max_bandwidth > 0 &&
2564 st->lim_dl_max_bandwidth <= NSTAT_LIM_DL_MAX_BANDWIDTH_THRESHOLD)
2565 st->lim_dl_detected = 1;
2566
2567 if ((st->lim_ul_max_bandwidth > 0 &&
2568 st->lim_ul_max_bandwidth <= NSTAT_LIM_UL_MAX_BANDWIDTH_THRESHOLD) ||
2569 st->lim_rtt_min >= NSTAT_LIM_UL_MIN_RTT_THRESHOLD)
2570 st->lim_ul_detected = 1;
2571
2572 if (st->lim_conn_attempts > 20 &&
2573 st->lim_conn_timeout_percent >=
2574 NSTAT_LIM_CONN_TIMEOUT_PERCENT_THRESHOLD)
2575 st->lim_ul_detected = 1;
2576 /*
2577 * Second order metrics: If there was high packet loss even after
2578 * using delay based algorithms then we classify it as Low Internet
2579 * again
2580 */
2581 if (st->lim_bk_txpkts >= nstat_lim_min_tx_pkts &&
2582 st->lim_packet_loss_percent >=
2583 NSTAT_LIM_PACKET_LOSS_PERCENT_THRESHOLD)
2584 st->lim_ul_detected = 1;
2585 return (TRUE);
2586 }
2587
2588 static u_int64_t nstat_lim_last_report_time = 0;
2589 static void
2590 nstat_ifnet_report_lim_stats(void)
2591 {
2592 u_int64_t uptime;
2593 struct nstat_sysinfo_data data;
2594 struct nstat_sysinfo_lim_stats *st;
2595 struct ifnet *ifp;
2596 int err;
2597
2598 uptime = net_uptime();
2599
2600 if ((u_int32_t)(uptime - nstat_lim_last_report_time) <
2601 nstat_lim_interval)
2602 return;
2603
2604 nstat_lim_last_report_time = uptime;
2605 data.flags = NSTAT_SYSINFO_LIM_STATS;
2606 st = &data.u.lim_stats;
2607 data.unsent_data_cnt = 0;
2608
2609 ifnet_head_lock_shared();
2610 TAILQ_FOREACH(ifp, &ifnet_head, if_link) {
2611 if (!IF_FULLY_ATTACHED(ifp))
2612 continue;
2613
2614 /* Limit reporting to Wifi, Ethernet and cellular */
2615 if (!(IFNET_IS_ETHERNET(ifp) || IFNET_IS_CELLULAR(ifp)))
2616 continue;
2617
2618 if (!nstat_lim_activity_check(&ifp->if_lim_stat))
2619 continue;
2620
2621 bzero(st, sizeof(*st));
2622 st->ifnet_siglen = sizeof (st->ifnet_signature);
2623 err = ifnet_get_netsignature(ifp, AF_INET,
2624 (u_int8_t *)&st->ifnet_siglen, NULL,
2625 st->ifnet_signature);
2626 if (err != 0) {
2627 err = ifnet_get_netsignature(ifp, AF_INET6,
2628 (u_int8_t *)&st->ifnet_siglen, NULL,
2629 st->ifnet_signature);
2630 if (err != 0)
2631 continue;
2632 }
2633 ifnet_lock_shared(ifp);
2634 if (IFNET_IS_CELLULAR(ifp)) {
2635 st->ifnet_type = NSTAT_IFNET_DESC_LINK_STATUS_TYPE_CELLULAR;
2636 } else if (IFNET_IS_WIFI(ifp)) {
2637 st->ifnet_type = NSTAT_IFNET_DESC_LINK_STATUS_TYPE_WIFI;
2638 } else {
2639 st->ifnet_type = NSTAT_IFNET_DESC_LINK_STATUS_TYPE_ETHERNET;
2640 }
2641 bcopy(&ifp->if_lim_stat, &st->lim_stat,
2642 sizeof(st->lim_stat));
2643
2644 /* Zero the stats in ifp */
2645 bzero(&ifp->if_lim_stat, sizeof(ifp->if_lim_stat));
2646 ifnet_lock_done(ifp);
2647 nstat_sysinfo_send_data(&data);
2648 }
2649 ifnet_head_done();
2650 }
2651
2652 static errno_t
2653 nstat_ifnet_copy_descriptor(
2654 nstat_provider_cookie_t cookie,
2655 void *data,
2656 u_int32_t len)
2657 {
2658 nstat_ifnet_descriptor *desc = (nstat_ifnet_descriptor *)data;
2659 struct nstat_ifnet_cookie *ifcookie =
2660 (struct nstat_ifnet_cookie *)cookie;
2661 struct ifnet *ifp = ifcookie->ifp;
2662
2663 if (len < sizeof(nstat_ifnet_descriptor))
2664 return EINVAL;
2665
2666 if (nstat_ifnet_gone(cookie))
2667 return EINVAL;
2668
2669 bzero(desc, sizeof(*desc));
2670 ifnet_lock_shared(ifp);
2671 strlcpy(desc->name, ifp->if_xname, sizeof(desc->name));
2672 desc->ifindex = ifp->if_index;
2673 desc->threshold = ifp->if_data_threshold;
2674 desc->type = ifp->if_type;
2675 if (ifp->if_desc.ifd_len < sizeof(desc->description))
2676 memcpy(desc->description, ifp->if_desc.ifd_desc,
2677 sizeof(desc->description));
2678 nstat_ifnet_copy_link_status(ifp, desc);
2679 ifnet_lock_done(ifp);
2680 return 0;
2681 }
2682
2683 static void
2684 nstat_init_ifnet_provider(void)
2685 {
2686 bzero(&nstat_ifnet_provider, sizeof(nstat_ifnet_provider));
2687 nstat_ifnet_provider.nstat_provider_id = NSTAT_PROVIDER_IFNET;
2688 nstat_ifnet_provider.nstat_descriptor_length = sizeof(nstat_ifnet_descriptor);
2689 nstat_ifnet_provider.nstat_lookup = nstat_ifnet_lookup;
2690 nstat_ifnet_provider.nstat_gone = nstat_ifnet_gone;
2691 nstat_ifnet_provider.nstat_counts = nstat_ifnet_counts;
2692 nstat_ifnet_provider.nstat_watcher_add = NULL;
2693 nstat_ifnet_provider.nstat_watcher_remove = NULL;
2694 nstat_ifnet_provider.nstat_copy_descriptor = nstat_ifnet_copy_descriptor;
2695 nstat_ifnet_provider.nstat_release = nstat_ifnet_release;
2696 nstat_ifnet_provider.next = nstat_providers;
2697 nstat_providers = &nstat_ifnet_provider;
2698 }
2699
2700 __private_extern__ void
2701 nstat_ifnet_threshold_reached(unsigned int ifindex)
2702 {
2703 nstat_control_state *state;
2704 nstat_src *src;
2705 struct ifnet *ifp;
2706 struct nstat_ifnet_cookie *ifcookie;
2707
2708 lck_mtx_lock(&nstat_mtx);
2709 for (state = nstat_controls; state; state = state->ncs_next)
2710 {
2711 lck_mtx_lock(&state->ncs_mtx);
2712 TAILQ_FOREACH(src, &state->ncs_src_queue, ns_control_link)
2713 {
2714 if (src->provider != &nstat_ifnet_provider)
2715 continue;
2716 ifcookie = (struct nstat_ifnet_cookie *)src->cookie;
2717 ifp = ifcookie->ifp;
2718 if (ifp->if_index != ifindex)
2719 continue;
2720 nstat_control_send_counts(state, src, 0, 0, NULL);
2721 }
2722 lck_mtx_unlock(&state->ncs_mtx);
2723 }
2724 lck_mtx_unlock(&nstat_mtx);
2725 }
2726
2727 #pragma mark -- Sysinfo --
2728 static void
2729 nstat_set_keyval_scalar(nstat_sysinfo_keyval *kv, int key, u_int32_t val)
2730 {
2731 kv->nstat_sysinfo_key = key;
2732 kv->nstat_sysinfo_flags = NSTAT_SYSINFO_FLAG_SCALAR;
2733 kv->u.nstat_sysinfo_scalar = val;
2734 kv->nstat_sysinfo_valsize = sizeof(kv->u.nstat_sysinfo_scalar);
2735 }
2736
2737 static void
2738 nstat_set_keyval_string(nstat_sysinfo_keyval *kv, int key, u_int8_t *buf,
2739 u_int32_t len)
2740 {
2741 kv->nstat_sysinfo_key = key;
2742 kv->nstat_sysinfo_flags = NSTAT_SYSINFO_FLAG_STRING;
2743 kv->nstat_sysinfo_valsize = min(len,
2744 NSTAT_SYSINFO_KEYVAL_STRING_MAXSIZE);
2745 bcopy(buf, kv->u.nstat_sysinfo_string, kv->nstat_sysinfo_valsize);
2746 }
2747
2748 static void
2749 nstat_sysinfo_send_data_internal(
2750 nstat_control_state *control,
2751 nstat_sysinfo_data *data)
2752 {
2753 nstat_msg_sysinfo_counts *syscnt = NULL;
2754 size_t allocsize = 0, countsize = 0, nkeyvals = 0, finalsize = 0;
2755 nstat_sysinfo_keyval *kv;
2756 errno_t result = 0;
2757 size_t i = 0;
2758
2759 allocsize = offsetof(nstat_msg_sysinfo_counts, counts);
2760 countsize = offsetof(nstat_sysinfo_counts, nstat_sysinfo_keyvals);
2761 finalsize = allocsize;
2762
2763 /* get number of key-vals for each kind of stat */
2764 switch (data->flags)
2765 {
2766 case NSTAT_SYSINFO_MBUF_STATS:
2767 nkeyvals = sizeof(struct nstat_sysinfo_mbuf_stats) /
2768 sizeof(u_int32_t);
2769 break;
2770 case NSTAT_SYSINFO_TCP_STATS:
2771 nkeyvals = NSTAT_SYSINFO_TCP_STATS_COUNT;
2772 break;
2773 case NSTAT_SYSINFO_IFNET_ECN_STATS:
2774 nkeyvals = (sizeof(struct if_tcp_ecn_stat) /
2775 sizeof(u_int64_t));
2776
2777 /* Two more keys for ifnet type and proto */
2778 nkeyvals += 2;
2779
2780 /* One key for unsent data. */
2781 nkeyvals++;
2782 break;
2783 case NSTAT_SYSINFO_LIM_STATS:
2784 nkeyvals = NSTAT_LIM_STAT_KEYVAL_COUNT;
2785 break;
2786 case NSTAT_SYSINFO_NET_API_STATS:
2787 nkeyvals = NSTAT_NET_API_STAT_KEYVAL_COUNT;
2788 break;
2789 default:
2790 return;
2791 }
2792 countsize += sizeof(nstat_sysinfo_keyval) * nkeyvals;
2793 allocsize += countsize;
2794
2795 syscnt = OSMalloc(allocsize, nstat_malloc_tag);
2796 if (syscnt == NULL)
2797 return;
2798 bzero(syscnt, allocsize);
2799
2800 kv = (nstat_sysinfo_keyval *) &syscnt->counts.nstat_sysinfo_keyvals;
2801 switch (data->flags)
2802 {
2803 case NSTAT_SYSINFO_MBUF_STATS:
2804 {
2805 nstat_set_keyval_scalar(&kv[i++],
2806 NSTAT_SYSINFO_KEY_MBUF_256B_TOTAL,
2807 data->u.mb_stats.total_256b);
2808 nstat_set_keyval_scalar(&kv[i++],
2809 NSTAT_SYSINFO_KEY_MBUF_2KB_TOTAL,
2810 data->u.mb_stats.total_2kb);
2811 nstat_set_keyval_scalar(&kv[i++],
2812 NSTAT_SYSINFO_KEY_MBUF_4KB_TOTAL,
2813 data->u.mb_stats.total_4kb);
2814 nstat_set_keyval_scalar(&kv[i++],
2815 NSTAT_SYSINFO_MBUF_16KB_TOTAL,
2816 data->u.mb_stats.total_16kb);
2817 nstat_set_keyval_scalar(&kv[i++],
2818 NSTAT_SYSINFO_KEY_SOCK_MBCNT,
2819 data->u.mb_stats.sbmb_total);
2820 nstat_set_keyval_scalar(&kv[i++],
2821 NSTAT_SYSINFO_KEY_SOCK_ATMBLIMIT,
2822 data->u.mb_stats.sb_atmbuflimit);
2823 nstat_set_keyval_scalar(&kv[i++],
2824 NSTAT_SYSINFO_MBUF_DRAIN_CNT,
2825 data->u.mb_stats.draincnt);
2826 nstat_set_keyval_scalar(&kv[i++],
2827 NSTAT_SYSINFO_MBUF_MEM_RELEASED,
2828 data->u.mb_stats.memreleased);
2829 nstat_set_keyval_scalar(&kv[i++],
2830 NSTAT_SYSINFO_KEY_SOCK_MBFLOOR,
2831 data->u.mb_stats.sbmb_floor);
2832 VERIFY(i == nkeyvals);
2833 break;
2834 }
2835 case NSTAT_SYSINFO_TCP_STATS:
2836 {
2837 nstat_set_keyval_scalar(&kv[i++],
2838 NSTAT_SYSINFO_KEY_IPV4_AVGRTT,
2839 data->u.tcp_stats.ipv4_avgrtt);
2840 nstat_set_keyval_scalar(&kv[i++],
2841 NSTAT_SYSINFO_KEY_IPV6_AVGRTT,
2842 data->u.tcp_stats.ipv6_avgrtt);
2843 nstat_set_keyval_scalar(&kv[i++],
2844 NSTAT_SYSINFO_KEY_SEND_PLR,
2845 data->u.tcp_stats.send_plr);
2846 nstat_set_keyval_scalar(&kv[i++],
2847 NSTAT_SYSINFO_KEY_RECV_PLR,
2848 data->u.tcp_stats.recv_plr);
2849 nstat_set_keyval_scalar(&kv[i++],
2850 NSTAT_SYSINFO_KEY_SEND_TLRTO,
2851 data->u.tcp_stats.send_tlrto_rate);
2852 nstat_set_keyval_scalar(&kv[i++],
2853 NSTAT_SYSINFO_KEY_SEND_REORDERRATE,
2854 data->u.tcp_stats.send_reorder_rate);
2855 nstat_set_keyval_scalar(&kv[i++],
2856 NSTAT_SYSINFO_CONNECTION_ATTEMPTS,
2857 data->u.tcp_stats.connection_attempts);
2858 nstat_set_keyval_scalar(&kv[i++],
2859 NSTAT_SYSINFO_CONNECTION_ACCEPTS,
2860 data->u.tcp_stats.connection_accepts);
2861 nstat_set_keyval_scalar(&kv[i++],
2862 NSTAT_SYSINFO_ECN_CLIENT_ENABLED,
2863 data->u.tcp_stats.ecn_client_enabled);
2864 nstat_set_keyval_scalar(&kv[i++],
2865 NSTAT_SYSINFO_ECN_SERVER_ENABLED,
2866 data->u.tcp_stats.ecn_server_enabled);
2867 nstat_set_keyval_scalar(&kv[i++],
2868 NSTAT_SYSINFO_ECN_CLIENT_SETUP,
2869 data->u.tcp_stats.ecn_client_setup);
2870 nstat_set_keyval_scalar(&kv[i++],
2871 NSTAT_SYSINFO_ECN_SERVER_SETUP,
2872 data->u.tcp_stats.ecn_server_setup);
2873 nstat_set_keyval_scalar(&kv[i++],
2874 NSTAT_SYSINFO_ECN_CLIENT_SUCCESS,
2875 data->u.tcp_stats.ecn_client_success);
2876 nstat_set_keyval_scalar(&kv[i++],
2877 NSTAT_SYSINFO_ECN_SERVER_SUCCESS,
2878 data->u.tcp_stats.ecn_server_success);
2879 nstat_set_keyval_scalar(&kv[i++],
2880 NSTAT_SYSINFO_ECN_NOT_SUPPORTED,
2881 data->u.tcp_stats.ecn_not_supported);
2882 nstat_set_keyval_scalar(&kv[i++],
2883 NSTAT_SYSINFO_ECN_LOST_SYN,
2884 data->u.tcp_stats.ecn_lost_syn);
2885 nstat_set_keyval_scalar(&kv[i++],
2886 NSTAT_SYSINFO_ECN_LOST_SYNACK,
2887 data->u.tcp_stats.ecn_lost_synack);
2888 nstat_set_keyval_scalar(&kv[i++],
2889 NSTAT_SYSINFO_ECN_RECV_CE,
2890 data->u.tcp_stats.ecn_recv_ce);
2891 nstat_set_keyval_scalar(&kv[i++],
2892 NSTAT_SYSINFO_ECN_RECV_ECE,
2893 data->u.tcp_stats.ecn_recv_ece);
2894 nstat_set_keyval_scalar(&kv[i++],
2895 NSTAT_SYSINFO_ECN_SENT_ECE,
2896 data->u.tcp_stats.ecn_sent_ece);
2897 nstat_set_keyval_scalar(&kv[i++],
2898 NSTAT_SYSINFO_ECN_CONN_RECV_CE,
2899 data->u.tcp_stats.ecn_conn_recv_ce);
2900 nstat_set_keyval_scalar(&kv[i++],
2901 NSTAT_SYSINFO_ECN_CONN_RECV_ECE,
2902 data->u.tcp_stats.ecn_conn_recv_ece);
2903 nstat_set_keyval_scalar(&kv[i++],
2904 NSTAT_SYSINFO_ECN_CONN_PLNOCE,
2905 data->u.tcp_stats.ecn_conn_plnoce);
2906 nstat_set_keyval_scalar(&kv[i++],
2907 NSTAT_SYSINFO_ECN_CONN_PL_CE,
2908 data->u.tcp_stats.ecn_conn_pl_ce);
2909 nstat_set_keyval_scalar(&kv[i++],
2910 NSTAT_SYSINFO_ECN_CONN_NOPL_CE,
2911 data->u.tcp_stats.ecn_conn_nopl_ce);
2912 nstat_set_keyval_scalar(&kv[i++],
2913 NSTAT_SYSINFO_ECN_FALLBACK_SYNLOSS,
2914 data->u.tcp_stats.ecn_fallback_synloss);
2915 nstat_set_keyval_scalar(&kv[i++],
2916 NSTAT_SYSINFO_ECN_FALLBACK_REORDER,
2917 data->u.tcp_stats.ecn_fallback_reorder);
2918 nstat_set_keyval_scalar(&kv[i++],
2919 NSTAT_SYSINFO_ECN_FALLBACK_CE,
2920 data->u.tcp_stats.ecn_fallback_ce);
2921 nstat_set_keyval_scalar(&kv[i++],
2922 NSTAT_SYSINFO_TFO_SYN_DATA_RCV,
2923 data->u.tcp_stats.tfo_syn_data_rcv);
2924 nstat_set_keyval_scalar(&kv[i++],
2925 NSTAT_SYSINFO_TFO_COOKIE_REQ_RCV,
2926 data->u.tcp_stats.tfo_cookie_req_rcv);
2927 nstat_set_keyval_scalar(&kv[i++],
2928 NSTAT_SYSINFO_TFO_COOKIE_SENT,
2929 data->u.tcp_stats.tfo_cookie_sent);
2930 nstat_set_keyval_scalar(&kv[i++],
2931 NSTAT_SYSINFO_TFO_COOKIE_INVALID,
2932 data->u.tcp_stats.tfo_cookie_invalid);
2933 nstat_set_keyval_scalar(&kv[i++],
2934 NSTAT_SYSINFO_TFO_COOKIE_REQ,
2935 data->u.tcp_stats.tfo_cookie_req);
2936 nstat_set_keyval_scalar(&kv[i++],
2937 NSTAT_SYSINFO_TFO_COOKIE_RCV,
2938 data->u.tcp_stats.tfo_cookie_rcv);
2939 nstat_set_keyval_scalar(&kv[i++],
2940 NSTAT_SYSINFO_TFO_SYN_DATA_SENT,
2941 data->u.tcp_stats.tfo_syn_data_sent);
2942 nstat_set_keyval_scalar(&kv[i++],
2943 NSTAT_SYSINFO_TFO_SYN_DATA_ACKED,
2944 data->u.tcp_stats.tfo_syn_data_acked);
2945 nstat_set_keyval_scalar(&kv[i++],
2946 NSTAT_SYSINFO_TFO_SYN_LOSS,
2947 data->u.tcp_stats.tfo_syn_loss);
2948 nstat_set_keyval_scalar(&kv[i++],
2949 NSTAT_SYSINFO_TFO_BLACKHOLE,
2950 data->u.tcp_stats.tfo_blackhole);
2951 nstat_set_keyval_scalar(&kv[i++],
2952 NSTAT_SYSINFO_TFO_COOKIE_WRONG,
2953 data->u.tcp_stats.tfo_cookie_wrong);
2954 nstat_set_keyval_scalar(&kv[i++],
2955 NSTAT_SYSINFO_TFO_NO_COOKIE_RCV,
2956 data->u.tcp_stats.tfo_no_cookie_rcv);
2957 nstat_set_keyval_scalar(&kv[i++],
2958 NSTAT_SYSINFO_TFO_HEURISTICS_DISABLE,
2959 data->u.tcp_stats.tfo_heuristics_disable);
2960 nstat_set_keyval_scalar(&kv[i++],
2961 NSTAT_SYSINFO_TFO_SEND_BLACKHOLE,
2962 data->u.tcp_stats.tfo_sndblackhole);
2963 nstat_set_keyval_scalar(&kv[i++],
2964 NSTAT_SYSINFO_MPTCP_HANDOVER_ATTEMPT,
2965 data->u.tcp_stats.mptcp_handover_attempt);
2966 nstat_set_keyval_scalar(&kv[i++],
2967 NSTAT_SYSINFO_MPTCP_INTERACTIVE_ATTEMPT,
2968 data->u.tcp_stats.mptcp_interactive_attempt);
2969 nstat_set_keyval_scalar(&kv[i++],
2970 NSTAT_SYSINFO_MPTCP_AGGREGATE_ATTEMPT,
2971 data->u.tcp_stats.mptcp_aggregate_attempt);
2972 nstat_set_keyval_scalar(&kv[i++],
2973 NSTAT_SYSINFO_MPTCP_FP_HANDOVER_ATTEMPT,
2974 data->u.tcp_stats.mptcp_fp_handover_attempt);
2975 nstat_set_keyval_scalar(&kv[i++],
2976 NSTAT_SYSINFO_MPTCP_FP_INTERACTIVE_ATTEMPT,
2977 data->u.tcp_stats.mptcp_fp_interactive_attempt);
2978 nstat_set_keyval_scalar(&kv[i++],
2979 NSTAT_SYSINFO_MPTCP_FP_AGGREGATE_ATTEMPT,
2980 data->u.tcp_stats.mptcp_fp_aggregate_attempt);
2981 nstat_set_keyval_scalar(&kv[i++],
2982 NSTAT_SYSINFO_MPTCP_HEURISTIC_FALLBACK,
2983 data->u.tcp_stats.mptcp_heuristic_fallback);
2984 nstat_set_keyval_scalar(&kv[i++],
2985 NSTAT_SYSINFO_MPTCP_FP_HEURISTIC_FALLBACK,
2986 data->u.tcp_stats.mptcp_fp_heuristic_fallback);
2987 nstat_set_keyval_scalar(&kv[i++],
2988 NSTAT_SYSINFO_MPTCP_HANDOVER_SUCCESS_WIFI,
2989 data->u.tcp_stats.mptcp_handover_success_wifi);
2990 nstat_set_keyval_scalar(&kv[i++],
2991 NSTAT_SYSINFO_MPTCP_HANDOVER_SUCCESS_CELL,
2992 data->u.tcp_stats.mptcp_handover_success_cell);
2993 nstat_set_keyval_scalar(&kv[i++],
2994 NSTAT_SYSINFO_MPTCP_INTERACTIVE_SUCCESS,
2995 data->u.tcp_stats.mptcp_interactive_success);
2996 nstat_set_keyval_scalar(&kv[i++],
2997 NSTAT_SYSINFO_MPTCP_AGGREGATE_SUCCESS,
2998 data->u.tcp_stats.mptcp_aggregate_success);
2999 nstat_set_keyval_scalar(&kv[i++],
3000 NSTAT_SYSINFO_MPTCP_FP_HANDOVER_SUCCESS_WIFI,
3001 data->u.tcp_stats.mptcp_fp_handover_success_wifi);
3002 nstat_set_keyval_scalar(&kv[i++],
3003 NSTAT_SYSINFO_MPTCP_FP_HANDOVER_SUCCESS_CELL,
3004 data->u.tcp_stats.mptcp_fp_handover_success_cell);
3005 nstat_set_keyval_scalar(&kv[i++],
3006 NSTAT_SYSINFO_MPTCP_FP_INTERACTIVE_SUCCESS,
3007 data->u.tcp_stats.mptcp_fp_interactive_success);
3008 nstat_set_keyval_scalar(&kv[i++],
3009 NSTAT_SYSINFO_MPTCP_FP_AGGREGATE_SUCCESS,
3010 data->u.tcp_stats.mptcp_fp_aggregate_success);
3011 nstat_set_keyval_scalar(&kv[i++],
3012 NSTAT_SYSINFO_MPTCP_HANDOVER_CELL_FROM_WIFI,
3013 data->u.tcp_stats.mptcp_handover_cell_from_wifi);
3014 nstat_set_keyval_scalar(&kv[i++],
3015 NSTAT_SYSINFO_MPTCP_HANDOVER_WIFI_FROM_CELL,
3016 data->u.tcp_stats.mptcp_handover_wifi_from_cell);
3017 nstat_set_keyval_scalar(&kv[i++],
3018 NSTAT_SYSINFO_MPTCP_INTERACTIVE_CELL_FROM_WIFI,
3019 data->u.tcp_stats.mptcp_interactive_cell_from_wifi);
3020 nstat_set_keyval_scalar(&kv[i++],
3021 NSTAT_SYSINFO_MPTCP_HANDOVER_CELL_BYTES,
3022 data->u.tcp_stats.mptcp_handover_cell_bytes);
3023 nstat_set_keyval_scalar(&kv[i++],
3024 NSTAT_SYSINFO_MPTCP_INTERACTIVE_CELL_BYTES,
3025 data->u.tcp_stats.mptcp_interactive_cell_bytes);
3026 nstat_set_keyval_scalar(&kv[i++],
3027 NSTAT_SYSINFO_MPTCP_AGGREGATE_CELL_BYTES,
3028 data->u.tcp_stats.mptcp_aggregate_cell_bytes);
3029 nstat_set_keyval_scalar(&kv[i++],
3030 NSTAT_SYSINFO_MPTCP_HANDOVER_ALL_BYTES,
3031 data->u.tcp_stats.mptcp_handover_all_bytes);
3032 nstat_set_keyval_scalar(&kv[i++],
3033 NSTAT_SYSINFO_MPTCP_INTERACTIVE_ALL_BYTES,
3034 data->u.tcp_stats.mptcp_interactive_all_bytes);
3035 nstat_set_keyval_scalar(&kv[i++],
3036 NSTAT_SYSINFO_MPTCP_AGGREGATE_ALL_BYTES,
3037 data->u.tcp_stats.mptcp_aggregate_all_bytes);
3038 nstat_set_keyval_scalar(&kv[i++],
3039 NSTAT_SYSINFO_MPTCP_BACK_TO_WIFI,
3040 data->u.tcp_stats.mptcp_back_to_wifi);
3041 nstat_set_keyval_scalar(&kv[i++],
3042 NSTAT_SYSINFO_MPTCP_WIFI_PROXY,
3043 data->u.tcp_stats.mptcp_wifi_proxy);
3044 nstat_set_keyval_scalar(&kv[i++],
3045 NSTAT_SYSINFO_MPTCP_CELL_PROXY,
3046 data->u.tcp_stats.mptcp_cell_proxy);
3047 VERIFY(i == nkeyvals);
3048 break;
3049 }
3050 case NSTAT_SYSINFO_IFNET_ECN_STATS:
3051 {
3052 nstat_set_keyval_scalar(&kv[i++],
3053 NSTAT_SYSINFO_ECN_IFNET_TYPE,
3054 data->u.ifnet_ecn_stats.ifnet_type);
3055 nstat_set_keyval_scalar(&kv[i++],
3056 NSTAT_SYSINFO_ECN_IFNET_PROTO,
3057 data->u.ifnet_ecn_stats.ifnet_proto);
3058 nstat_set_keyval_scalar(&kv[i++],
3059 NSTAT_SYSINFO_ECN_IFNET_CLIENT_SETUP,
3060 data->u.ifnet_ecn_stats.ecn_stat.ecn_client_setup);
3061 nstat_set_keyval_scalar(&kv[i++],
3062 NSTAT_SYSINFO_ECN_IFNET_SERVER_SETUP,
3063 data->u.ifnet_ecn_stats.ecn_stat.ecn_server_setup);
3064 nstat_set_keyval_scalar(&kv[i++],
3065 NSTAT_SYSINFO_ECN_IFNET_CLIENT_SUCCESS,
3066 data->u.ifnet_ecn_stats.ecn_stat.ecn_client_success);
3067 nstat_set_keyval_scalar(&kv[i++],
3068 NSTAT_SYSINFO_ECN_IFNET_SERVER_SUCCESS,
3069 data->u.ifnet_ecn_stats.ecn_stat.ecn_server_success);
3070 nstat_set_keyval_scalar(&kv[i++],
3071 NSTAT_SYSINFO_ECN_IFNET_PEER_NOSUPPORT,
3072 data->u.ifnet_ecn_stats.ecn_stat.ecn_peer_nosupport);
3073 nstat_set_keyval_scalar(&kv[i++],
3074 NSTAT_SYSINFO_ECN_IFNET_SYN_LOST,
3075 data->u.ifnet_ecn_stats.ecn_stat.ecn_syn_lost);
3076 nstat_set_keyval_scalar(&kv[i++],
3077 NSTAT_SYSINFO_ECN_IFNET_SYNACK_LOST,
3078 data->u.ifnet_ecn_stats.ecn_stat.ecn_synack_lost);
3079 nstat_set_keyval_scalar(&kv[i++],
3080 NSTAT_SYSINFO_ECN_IFNET_RECV_CE,
3081 data->u.ifnet_ecn_stats.ecn_stat.ecn_recv_ce);
3082 nstat_set_keyval_scalar(&kv[i++],
3083 NSTAT_SYSINFO_ECN_IFNET_RECV_ECE,
3084 data->u.ifnet_ecn_stats.ecn_stat.ecn_recv_ece);
3085 nstat_set_keyval_scalar(&kv[i++],
3086 NSTAT_SYSINFO_ECN_IFNET_CONN_RECV_CE,
3087 data->u.ifnet_ecn_stats.ecn_stat.ecn_conn_recv_ce);
3088 nstat_set_keyval_scalar(&kv[i++],
3089 NSTAT_SYSINFO_ECN_IFNET_CONN_RECV_ECE,
3090 data->u.ifnet_ecn_stats.ecn_stat.ecn_conn_recv_ece);
3091 nstat_set_keyval_scalar(&kv[i++],
3092 NSTAT_SYSINFO_ECN_IFNET_CONN_PLNOCE,
3093 data->u.ifnet_ecn_stats.ecn_stat.ecn_conn_plnoce);
3094 nstat_set_keyval_scalar(&kv[i++],
3095 NSTAT_SYSINFO_ECN_IFNET_CONN_PLCE,
3096 data->u.ifnet_ecn_stats.ecn_stat.ecn_conn_plce);
3097 nstat_set_keyval_scalar(&kv[i++],
3098 NSTAT_SYSINFO_ECN_IFNET_CONN_NOPLCE,
3099 data->u.ifnet_ecn_stats.ecn_stat.ecn_conn_noplce);
3100 nstat_set_keyval_scalar(&kv[i++],
3101 NSTAT_SYSINFO_ECN_IFNET_FALLBACK_SYNLOSS,
3102 data->u.ifnet_ecn_stats.ecn_stat.ecn_fallback_synloss);
3103 nstat_set_keyval_scalar(&kv[i++],
3104 NSTAT_SYSINFO_ECN_IFNET_FALLBACK_REORDER,
3105 data->u.ifnet_ecn_stats.ecn_stat.ecn_fallback_reorder);
3106 nstat_set_keyval_scalar(&kv[i++],
3107 NSTAT_SYSINFO_ECN_IFNET_FALLBACK_CE,
3108 data->u.ifnet_ecn_stats.ecn_stat.ecn_fallback_ce);
3109 nstat_set_keyval_scalar(&kv[i++],
3110 NSTAT_SYSINFO_ECN_IFNET_ON_RTT_AVG,
3111 data->u.ifnet_ecn_stats.ecn_stat.ecn_on.rtt_avg);
3112 nstat_set_keyval_scalar(&kv[i++],
3113 NSTAT_SYSINFO_ECN_IFNET_ON_RTT_VAR,
3114 data->u.ifnet_ecn_stats.ecn_stat.ecn_on.rtt_var);
3115 nstat_set_keyval_scalar(&kv[i++],
3116 NSTAT_SYSINFO_ECN_IFNET_ON_OOPERCENT,
3117 data->u.ifnet_ecn_stats.ecn_stat.ecn_on.oo_percent);
3118 nstat_set_keyval_scalar(&kv[i++],
3119 NSTAT_SYSINFO_ECN_IFNET_ON_SACK_EPISODE,
3120 data->u.ifnet_ecn_stats.ecn_stat.ecn_on.sack_episodes);
3121 nstat_set_keyval_scalar(&kv[i++],
3122 NSTAT_SYSINFO_ECN_IFNET_ON_REORDER_PERCENT,
3123 data->u.ifnet_ecn_stats.ecn_stat.ecn_on.reorder_percent);
3124 nstat_set_keyval_scalar(&kv[i++],
3125 NSTAT_SYSINFO_ECN_IFNET_ON_RXMIT_PERCENT,
3126 data->u.ifnet_ecn_stats.ecn_stat.ecn_on.rxmit_percent);
3127 nstat_set_keyval_scalar(&kv[i++],
3128 NSTAT_SYSINFO_ECN_IFNET_ON_RXMIT_DROP,
3129 data->u.ifnet_ecn_stats.ecn_stat.ecn_on.rxmit_drop);
3130 nstat_set_keyval_scalar(&kv[i++],
3131 NSTAT_SYSINFO_ECN_IFNET_OFF_RTT_AVG,
3132 data->u.ifnet_ecn_stats.ecn_stat.ecn_off.rtt_avg);
3133 nstat_set_keyval_scalar(&kv[i++],
3134 NSTAT_SYSINFO_ECN_IFNET_OFF_RTT_VAR,
3135 data->u.ifnet_ecn_stats.ecn_stat.ecn_off.rtt_var);
3136 nstat_set_keyval_scalar(&kv[i++],
3137 NSTAT_SYSINFO_ECN_IFNET_OFF_OOPERCENT,
3138 data->u.ifnet_ecn_stats.ecn_stat.ecn_off.oo_percent);
3139 nstat_set_keyval_scalar(&kv[i++],
3140 NSTAT_SYSINFO_ECN_IFNET_OFF_SACK_EPISODE,
3141 data->u.ifnet_ecn_stats.ecn_stat.ecn_off.sack_episodes);
3142 nstat_set_keyval_scalar(&kv[i++],
3143 NSTAT_SYSINFO_ECN_IFNET_OFF_REORDER_PERCENT,
3144 data->u.ifnet_ecn_stats.ecn_stat.ecn_off.reorder_percent);
3145 nstat_set_keyval_scalar(&kv[i++],
3146 NSTAT_SYSINFO_ECN_IFNET_OFF_RXMIT_PERCENT,
3147 data->u.ifnet_ecn_stats.ecn_stat.ecn_off.rxmit_percent);
3148 nstat_set_keyval_scalar(&kv[i++],
3149 NSTAT_SYSINFO_ECN_IFNET_OFF_RXMIT_DROP,
3150 data->u.ifnet_ecn_stats.ecn_stat.ecn_off.rxmit_drop);
3151 nstat_set_keyval_scalar(&kv[i++],
3152 NSTAT_SYSINFO_ECN_IFNET_ON_TOTAL_TXPKTS,
3153 data->u.ifnet_ecn_stats.ecn_stat.ecn_on.total_txpkts);
3154 nstat_set_keyval_scalar(&kv[i++],
3155 NSTAT_SYSINFO_ECN_IFNET_ON_TOTAL_RXMTPKTS,
3156 data->u.ifnet_ecn_stats.ecn_stat.ecn_on.total_rxmitpkts);
3157 nstat_set_keyval_scalar(&kv[i++],
3158 NSTAT_SYSINFO_ECN_IFNET_ON_TOTAL_RXPKTS,
3159 data->u.ifnet_ecn_stats.ecn_stat.ecn_on.total_rxpkts);
3160 nstat_set_keyval_scalar(&kv[i++],
3161 NSTAT_SYSINFO_ECN_IFNET_ON_TOTAL_OOPKTS,
3162 data->u.ifnet_ecn_stats.ecn_stat.ecn_on.total_oopkts);
3163 nstat_set_keyval_scalar(&kv[i++],
3164 NSTAT_SYSINFO_ECN_IFNET_ON_DROP_RST,
3165 data->u.ifnet_ecn_stats.ecn_stat.ecn_on.rst_drop);
3166 nstat_set_keyval_scalar(&kv[i++],
3167 NSTAT_SYSINFO_ECN_IFNET_OFF_TOTAL_TXPKTS,
3168 data->u.ifnet_ecn_stats.ecn_stat.ecn_off.total_txpkts);
3169 nstat_set_keyval_scalar(&kv[i++],
3170 NSTAT_SYSINFO_ECN_IFNET_OFF_TOTAL_RXMTPKTS,
3171 data->u.ifnet_ecn_stats.ecn_stat.ecn_off.total_rxmitpkts);
3172 nstat_set_keyval_scalar(&kv[i++],
3173 NSTAT_SYSINFO_ECN_IFNET_OFF_TOTAL_RXPKTS,
3174 data->u.ifnet_ecn_stats.ecn_stat.ecn_off.total_rxpkts);
3175 nstat_set_keyval_scalar(&kv[i++],
3176 NSTAT_SYSINFO_ECN_IFNET_OFF_TOTAL_OOPKTS,
3177 data->u.ifnet_ecn_stats.ecn_stat.ecn_off.total_oopkts);
3178 nstat_set_keyval_scalar(&kv[i++],
3179 NSTAT_SYSINFO_ECN_IFNET_OFF_DROP_RST,
3180 data->u.ifnet_ecn_stats.ecn_stat.ecn_off.rst_drop);
3181 nstat_set_keyval_scalar(&kv[i++],
3182 NSTAT_SYSINFO_ECN_IFNET_TOTAL_CONN,
3183 data->u.ifnet_ecn_stats.ecn_stat.ecn_total_conn);
3184 nstat_set_keyval_scalar(&kv[i++],
3185 NSTAT_SYSINFO_IFNET_UNSENT_DATA,
3186 data->unsent_data_cnt);
3187 nstat_set_keyval_scalar(&kv[i++],
3188 NSTAT_SYSINFO_ECN_IFNET_FALLBACK_DROPRST,
3189 data->u.ifnet_ecn_stats.ecn_stat.ecn_fallback_droprst);
3190 nstat_set_keyval_scalar(&kv[i++],
3191 NSTAT_SYSINFO_ECN_IFNET_FALLBACK_DROPRXMT,
3192 data->u.ifnet_ecn_stats.ecn_stat.ecn_fallback_droprxmt);
3193 nstat_set_keyval_scalar(&kv[i++],
3194 NSTAT_SYSINFO_ECN_IFNET_FALLBACK_SYNRST,
3195 data->u.ifnet_ecn_stats.ecn_stat.ecn_fallback_synrst);
3196 break;
3197 }
3198 case NSTAT_SYSINFO_LIM_STATS:
3199 {
3200 nstat_set_keyval_string(&kv[i++],
3201 NSTAT_SYSINFO_LIM_IFNET_SIGNATURE,
3202 data->u.lim_stats.ifnet_signature,
3203 data->u.lim_stats.ifnet_siglen);
3204 nstat_set_keyval_scalar(&kv[i++],
3205 NSTAT_SYSINFO_LIM_IFNET_DL_MAX_BANDWIDTH,
3206 data->u.lim_stats.lim_stat.lim_dl_max_bandwidth);
3207 nstat_set_keyval_scalar(&kv[i++],
3208 NSTAT_SYSINFO_LIM_IFNET_UL_MAX_BANDWIDTH,
3209 data->u.lim_stats.lim_stat.lim_ul_max_bandwidth);
3210 nstat_set_keyval_scalar(&kv[i++],
3211 NSTAT_SYSINFO_LIM_IFNET_PACKET_LOSS_PERCENT,
3212 data->u.lim_stats.lim_stat.lim_packet_loss_percent);
3213 nstat_set_keyval_scalar(&kv[i++],
3214 NSTAT_SYSINFO_LIM_IFNET_PACKET_OOO_PERCENT,
3215 data->u.lim_stats.lim_stat.lim_packet_ooo_percent);
3216 nstat_set_keyval_scalar(&kv[i++],
3217 NSTAT_SYSINFO_LIM_IFNET_RTT_VARIANCE,
3218 data->u.lim_stats.lim_stat.lim_rtt_variance);
3219 nstat_set_keyval_scalar(&kv[i++],
3220 NSTAT_SYSINFO_LIM_IFNET_RTT_MIN,
3221 data->u.lim_stats.lim_stat.lim_rtt_min);
3222 nstat_set_keyval_scalar(&kv[i++],
3223 NSTAT_SYSINFO_LIM_IFNET_RTT_AVG,
3224 data->u.lim_stats.lim_stat.lim_rtt_average);
3225 nstat_set_keyval_scalar(&kv[i++],
3226 NSTAT_SYSINFO_LIM_IFNET_CONN_TIMEOUT_PERCENT,
3227 data->u.lim_stats.lim_stat.lim_conn_timeout_percent);
3228 nstat_set_keyval_scalar(&kv[i++],
3229 NSTAT_SYSINFO_LIM_IFNET_DL_DETECTED,
3230 data->u.lim_stats.lim_stat.lim_dl_detected);
3231 nstat_set_keyval_scalar(&kv[i++],
3232 NSTAT_SYSINFO_LIM_IFNET_UL_DETECTED,
3233 data->u.lim_stats.lim_stat.lim_ul_detected);
3234 nstat_set_keyval_scalar(&kv[i++],
3235 NSTAT_SYSINFO_LIM_IFNET_TYPE,
3236 data->u.lim_stats.ifnet_type);
3237 break;
3238 }
3239 case NSTAT_SYSINFO_NET_API_STATS:
3240 {
3241 nstat_set_keyval_scalar(&kv[i++],
3242 NSTAT_SYSINFO_API_IF_FLTR_ATTACH,
3243 data->u.net_api_stats.net_api_stats.nas_iflt_attach_total);
3244 nstat_set_keyval_scalar(&kv[i++],
3245 NSTAT_SYSINFO_API_IF_FLTR_ATTACH_OS,
3246 data->u.net_api_stats.net_api_stats.nas_iflt_attach_os_total);
3247 nstat_set_keyval_scalar(&kv[i++],
3248 NSTAT_SYSINFO_API_IP_FLTR_ADD,
3249 data->u.net_api_stats.net_api_stats.nas_ipf_add_total);
3250 nstat_set_keyval_scalar(&kv[i++],
3251 NSTAT_SYSINFO_API_IP_FLTR_ADD_OS,
3252 data->u.net_api_stats.net_api_stats.nas_ipf_add_os_total);
3253 nstat_set_keyval_scalar(&kv[i++],
3254 NSTAT_SYSINFO_API_SOCK_FLTR_ATTACH,
3255 data->u.net_api_stats.net_api_stats.nas_sfltr_register_total);
3256 nstat_set_keyval_scalar(&kv[i++],
3257 NSTAT_SYSINFO_API_SOCK_FLTR_ATTACH_OS,
3258 data->u.net_api_stats.net_api_stats.nas_sfltr_register_os_total);
3259
3260
3261 nstat_set_keyval_scalar(&kv[i++],
3262 NSTAT_SYSINFO_API_SOCK_ALLOC_TOTAL,
3263 data->u.net_api_stats.net_api_stats.nas_socket_alloc_total);
3264 nstat_set_keyval_scalar(&kv[i++],
3265 NSTAT_SYSINFO_API_SOCK_ALLOC_KERNEL,
3266 data->u.net_api_stats.net_api_stats.nas_socket_in_kernel_total);
3267 nstat_set_keyval_scalar(&kv[i++],
3268 NSTAT_SYSINFO_API_SOCK_ALLOC_KERNEL_OS,
3269 data->u.net_api_stats.net_api_stats.nas_socket_in_kernel_os_total);
3270 nstat_set_keyval_scalar(&kv[i++],
3271 NSTAT_SYSINFO_API_SOCK_NECP_CLIENTUUID,
3272 data->u.net_api_stats.net_api_stats.nas_socket_necp_clientuuid_total);
3273
3274 nstat_set_keyval_scalar(&kv[i++],
3275 NSTAT_SYSINFO_API_SOCK_DOMAIN_LOCAL,
3276 data->u.net_api_stats.net_api_stats.nas_socket_domain_local_total);
3277 nstat_set_keyval_scalar(&kv[i++],
3278 NSTAT_SYSINFO_API_SOCK_DOMAIN_ROUTE,
3279 data->u.net_api_stats.net_api_stats.nas_socket_domain_route_total);
3280 nstat_set_keyval_scalar(&kv[i++],
3281 NSTAT_SYSINFO_API_SOCK_DOMAIN_INET,
3282 data->u.net_api_stats.net_api_stats.nas_socket_domain_inet_total);
3283 nstat_set_keyval_scalar(&kv[i++],
3284 NSTAT_SYSINFO_API_SOCK_DOMAIN_INET6,
3285 data->u.net_api_stats.net_api_stats.nas_socket_domain_inet6_total);
3286 nstat_set_keyval_scalar(&kv[i++],
3287 NSTAT_SYSINFO_API_SOCK_DOMAIN_SYSTEM,
3288 data->u.net_api_stats.net_api_stats.nas_socket_domain_system_total);
3289 nstat_set_keyval_scalar(&kv[i++],
3290 NSTAT_SYSINFO_API_SOCK_DOMAIN_MULTIPATH,
3291 data->u.net_api_stats.net_api_stats.nas_socket_domain_multipath_total);
3292 nstat_set_keyval_scalar(&kv[i++],
3293 NSTAT_SYSINFO_API_SOCK_DOMAIN_KEY,
3294 data->u.net_api_stats.net_api_stats.nas_socket_domain_key_total);
3295 nstat_set_keyval_scalar(&kv[i++],
3296 NSTAT_SYSINFO_API_SOCK_DOMAIN_NDRV,
3297 data->u.net_api_stats.net_api_stats.nas_socket_domain_ndrv_total);
3298 nstat_set_keyval_scalar(&kv[i++],
3299 NSTAT_SYSINFO_API_SOCK_DOMAIN_OTHER,
3300 data->u.net_api_stats.net_api_stats.nas_socket_domain_other_total);
3301
3302 nstat_set_keyval_scalar(&kv[i++],
3303 NSTAT_SYSINFO_API_SOCK_INET_STREAM,
3304 data->u.net_api_stats.net_api_stats.nas_socket_inet_stream_total);
3305 nstat_set_keyval_scalar(&kv[i++],
3306 NSTAT_SYSINFO_API_SOCK_INET_DGRAM,
3307 data->u.net_api_stats.net_api_stats.nas_socket_inet_dgram_total);
3308 nstat_set_keyval_scalar(&kv[i++],
3309 NSTAT_SYSINFO_API_SOCK_INET_DGRAM_CONNECTED,
3310 data->u.net_api_stats.net_api_stats.nas_socket_inet_dgram_connected);
3311 nstat_set_keyval_scalar(&kv[i++],
3312 NSTAT_SYSINFO_API_SOCK_INET_DGRAM_DNS,
3313 data->u.net_api_stats.net_api_stats.nas_socket_inet_dgram_dns);
3314 nstat_set_keyval_scalar(&kv[i++],
3315 NSTAT_SYSINFO_API_SOCK_INET_DGRAM_NO_DATA,
3316 data->u.net_api_stats.net_api_stats.nas_socket_inet_dgram_no_data);
3317
3318 nstat_set_keyval_scalar(&kv[i++],
3319 NSTAT_SYSINFO_API_SOCK_INET6_STREAM,
3320 data->u.net_api_stats.net_api_stats.nas_socket_inet6_stream_total);
3321 nstat_set_keyval_scalar(&kv[i++],
3322 NSTAT_SYSINFO_API_SOCK_INET6_DGRAM,
3323 data->u.net_api_stats.net_api_stats.nas_socket_inet6_dgram_total);
3324 nstat_set_keyval_scalar(&kv[i++],
3325 NSTAT_SYSINFO_API_SOCK_INET6_DGRAM_CONNECTED,
3326 data->u.net_api_stats.net_api_stats.nas_socket_inet6_dgram_connected);
3327 nstat_set_keyval_scalar(&kv[i++],
3328 NSTAT_SYSINFO_API_SOCK_INET6_DGRAM_DNS,
3329 data->u.net_api_stats.net_api_stats.nas_socket_inet6_dgram_dns);
3330 nstat_set_keyval_scalar(&kv[i++],
3331 NSTAT_SYSINFO_API_SOCK_INET6_DGRAM_NO_DATA,
3332 data->u.net_api_stats.net_api_stats.nas_socket_inet6_dgram_no_data);
3333
3334 nstat_set_keyval_scalar(&kv[i++],
3335 NSTAT_SYSINFO_API_SOCK_INET_MCAST_JOIN,
3336 data->u.net_api_stats.net_api_stats.nas_socket_mcast_join_total);
3337 nstat_set_keyval_scalar(&kv[i++],
3338 NSTAT_SYSINFO_API_SOCK_INET_MCAST_JOIN_OS,
3339 data->u.net_api_stats.net_api_stats.nas_socket_mcast_join_os_total);
3340
3341 nstat_set_keyval_scalar(&kv[i++],
3342 NSTAT_SYSINFO_API_NEXUS_FLOW_INET_STREAM,
3343 data->u.net_api_stats.net_api_stats.nas_nx_flow_inet_stream_total);
3344 nstat_set_keyval_scalar(&kv[i++],
3345 NSTAT_SYSINFO_API_NEXUS_FLOW_INET_DATAGRAM,
3346 data->u.net_api_stats.net_api_stats.nas_nx_flow_inet_dgram_total);
3347
3348 nstat_set_keyval_scalar(&kv[i++],
3349 NSTAT_SYSINFO_API_NEXUS_FLOW_INET6_STREAM,
3350 data->u.net_api_stats.net_api_stats.nas_nx_flow_inet6_stream_total);
3351 nstat_set_keyval_scalar(&kv[i++],
3352 NSTAT_SYSINFO_API_NEXUS_FLOW_INET6_DATAGRAM,
3353 data->u.net_api_stats.net_api_stats.nas_nx_flow_inet6_dgram_total);
3354
3355 nstat_set_keyval_scalar(&kv[i++],
3356 NSTAT_SYSINFO_API_IFNET_ALLOC,
3357 data->u.net_api_stats.net_api_stats.nas_ifnet_alloc_total);
3358 nstat_set_keyval_scalar(&kv[i++],
3359 NSTAT_SYSINFO_API_IFNET_ALLOC_OS,
3360 data->u.net_api_stats.net_api_stats.nas_ifnet_alloc_os_total);
3361
3362 nstat_set_keyval_scalar(&kv[i++],
3363 NSTAT_SYSINFO_API_PF_ADDRULE,
3364 data->u.net_api_stats.net_api_stats.nas_pf_addrule_total);
3365 nstat_set_keyval_scalar(&kv[i++],
3366 NSTAT_SYSINFO_API_PF_ADDRULE_OS,
3367 data->u.net_api_stats.net_api_stats.nas_pf_addrule_os);
3368
3369 nstat_set_keyval_scalar(&kv[i++],
3370 NSTAT_SYSINFO_API_VMNET_START,
3371 data->u.net_api_stats.net_api_stats.nas_vmnet_total);
3372
3373
3374 nstat_set_keyval_scalar(&kv[i++],
3375 NSTAT_SYSINFO_API_REPORT_INTERVAL,
3376 data->u.net_api_stats.report_interval);
3377
3378 break;
3379 }
3380 }
3381 if (syscnt != NULL)
3382 {
3383 VERIFY(i > 0 && i <= nkeyvals);
3384 countsize = offsetof(nstat_sysinfo_counts,
3385 nstat_sysinfo_keyvals) +
3386 sizeof(nstat_sysinfo_keyval) * i;
3387 finalsize += countsize;
3388 syscnt->hdr.type = NSTAT_MSG_TYPE_SYSINFO_COUNTS;
3389 syscnt->hdr.length = finalsize;
3390 syscnt->counts.nstat_sysinfo_len = countsize;
3391
3392 result = ctl_enqueuedata(control->ncs_kctl,
3393 control->ncs_unit, syscnt, finalsize, CTL_DATA_EOR);
3394 if (result != 0)
3395 {
3396 nstat_stats.nstat_sysinfofailures += 1;
3397 }
3398 OSFree(syscnt, allocsize, nstat_malloc_tag);
3399 }
3400 return;
3401 }
3402
3403 __private_extern__ void
3404 nstat_sysinfo_send_data(
3405 nstat_sysinfo_data *data)
3406 {
3407 nstat_control_state *control;
3408
3409 lck_mtx_lock(&nstat_mtx);
3410 for (control = nstat_controls; control; control = control->ncs_next) {
3411 lck_mtx_lock(&control->ncs_mtx);
3412 if ((control->ncs_flags & NSTAT_FLAG_SYSINFO_SUBSCRIBED) != 0) {
3413 nstat_sysinfo_send_data_internal(control, data);
3414 }
3415 lck_mtx_unlock(&control->ncs_mtx);
3416 }
3417 lck_mtx_unlock(&nstat_mtx);
3418 }
3419
3420 static void
3421 nstat_sysinfo_generate_report(void)
3422 {
3423 mbuf_report_peak_usage();
3424 tcp_report_stats();
3425 nstat_ifnet_report_ecn_stats();
3426 nstat_ifnet_report_lim_stats();
3427 nstat_net_api_report_stats();
3428 }
3429
3430 #pragma mark -- net_api --
3431
3432 static struct net_api_stats net_api_stats_before;
3433 static u_int64_t net_api_stats_last_report_time;
3434
3435 static void
3436 nstat_net_api_report_stats(void)
3437 {
3438 struct nstat_sysinfo_data data;
3439 struct nstat_sysinfo_net_api_stats *st = &data.u.net_api_stats;
3440 u_int64_t uptime;
3441
3442 uptime = net_uptime();
3443
3444 if ((u_int32_t)(uptime - net_api_stats_last_report_time) <
3445 net_api_stats_report_interval)
3446 return;
3447
3448 st->report_interval = uptime - net_api_stats_last_report_time;
3449 net_api_stats_last_report_time = uptime;
3450
3451 data.flags = NSTAT_SYSINFO_NET_API_STATS;
3452 data.unsent_data_cnt = 0;
3453
3454 /*
3455 * Some of the fields in the report are the current value and
3456 * other fields are the delta from the last report:
3457 * - Report difference for the per flow counters as they increase
3458 * with time
3459 * - Report current value for other counters as they tend not to change
3460 * much with time
3461 */
3462 #define STATCOPY(f) \
3463 (st->net_api_stats.f = net_api_stats.f)
3464 #define STATDIFF(f) \
3465 (st->net_api_stats.f = net_api_stats.f - net_api_stats_before.f)
3466
3467 STATCOPY(nas_iflt_attach_count);
3468 STATCOPY(nas_iflt_attach_total);
3469 STATCOPY(nas_iflt_attach_os_total);
3470
3471 STATCOPY(nas_ipf_add_count);
3472 STATCOPY(nas_ipf_add_total);
3473 STATCOPY(nas_ipf_add_os_total);
3474
3475 STATCOPY(nas_sfltr_register_count);
3476 STATCOPY(nas_sfltr_register_total);
3477 STATCOPY(nas_sfltr_register_os_total);
3478
3479 STATDIFF(nas_socket_alloc_total);
3480 STATDIFF(nas_socket_in_kernel_total);
3481 STATDIFF(nas_socket_in_kernel_os_total);
3482 STATDIFF(nas_socket_necp_clientuuid_total);
3483
3484 STATDIFF(nas_socket_domain_local_total);
3485 STATDIFF(nas_socket_domain_route_total);
3486 STATDIFF(nas_socket_domain_inet_total);
3487 STATDIFF(nas_socket_domain_inet6_total);
3488 STATDIFF(nas_socket_domain_system_total);
3489 STATDIFF(nas_socket_domain_multipath_total);
3490 STATDIFF(nas_socket_domain_key_total);
3491 STATDIFF(nas_socket_domain_ndrv_total);
3492 STATDIFF(nas_socket_domain_other_total);
3493
3494 STATDIFF(nas_socket_inet_stream_total);
3495 STATDIFF(nas_socket_inet_dgram_total);
3496 STATDIFF(nas_socket_inet_dgram_connected);
3497 STATDIFF(nas_socket_inet_dgram_dns);
3498 STATDIFF(nas_socket_inet_dgram_no_data);
3499
3500 STATDIFF(nas_socket_inet6_stream_total);
3501 STATDIFF(nas_socket_inet6_dgram_total);
3502 STATDIFF(nas_socket_inet6_dgram_connected);
3503 STATDIFF(nas_socket_inet6_dgram_dns);
3504 STATDIFF(nas_socket_inet6_dgram_no_data);
3505
3506 STATDIFF(nas_socket_mcast_join_total);
3507 STATDIFF(nas_socket_mcast_join_os_total);
3508
3509 STATDIFF(nas_sock_inet6_stream_exthdr_in);
3510 STATDIFF(nas_sock_inet6_stream_exthdr_out);
3511 STATDIFF(nas_sock_inet6_dgram_exthdr_in);
3512 STATDIFF(nas_sock_inet6_dgram_exthdr_out);
3513
3514 STATDIFF(nas_nx_flow_inet_stream_total);
3515 STATDIFF(nas_nx_flow_inet_dgram_total);
3516
3517 STATDIFF(nas_nx_flow_inet6_stream_total);
3518 STATDIFF(nas_nx_flow_inet6_dgram_total);
3519
3520 STATCOPY(nas_ifnet_alloc_count);
3521 STATCOPY(nas_ifnet_alloc_total);
3522 STATCOPY(nas_ifnet_alloc_os_count);
3523 STATCOPY(nas_ifnet_alloc_os_total);
3524
3525 STATCOPY(nas_pf_addrule_total);
3526 STATCOPY(nas_pf_addrule_os);
3527
3528 STATCOPY(nas_vmnet_total);
3529
3530 #undef STATCOPY
3531 #undef STATDIFF
3532
3533 nstat_sysinfo_send_data(&data);
3534
3535 /*
3536 * Save a copy of the current fields so we can diff them the next time
3537 */
3538 memcpy(&net_api_stats_before, &net_api_stats,
3539 sizeof(struct net_api_stats));
3540 _CASSERT(sizeof (net_api_stats_before) == sizeof (net_api_stats));
3541 }
3542
3543
3544 #pragma mark -- Kernel Control Socket --
3545
3546 static kern_ctl_ref nstat_ctlref = NULL;
3547 static lck_grp_t *nstat_lck_grp = NULL;
3548
3549 static errno_t nstat_control_connect(kern_ctl_ref kctl, struct sockaddr_ctl *sac, void **uinfo);
3550 static errno_t nstat_control_disconnect(kern_ctl_ref kctl, u_int32_t unit, void *uinfo);
3551 static errno_t nstat_control_send(kern_ctl_ref kctl, u_int32_t unit, void *uinfo, mbuf_t m, int flags);
3552
3553 static errno_t
3554 nstat_enqueue_success(
3555 uint64_t context,
3556 nstat_control_state *state,
3557 u_int16_t flags)
3558 {
3559 nstat_msg_hdr success;
3560 errno_t result;
3561
3562 bzero(&success, sizeof(success));
3563 success.context = context;
3564 success.type = NSTAT_MSG_TYPE_SUCCESS;
3565 success.length = sizeof(success);
3566 success.flags = flags;
3567 result = ctl_enqueuedata(state->ncs_kctl, state->ncs_unit, &success,
3568 sizeof(success), CTL_DATA_EOR | CTL_DATA_CRIT);
3569 if (result != 0) {
3570 if (nstat_debug != 0)
3571 printf("%s: could not enqueue success message %d\n",
3572 __func__, result);
3573 nstat_stats.nstat_successmsgfailures += 1;
3574 }
3575 return result;
3576 }
3577
3578 static errno_t
3579 nstat_control_send_goodbye(
3580 nstat_control_state *state,
3581 nstat_src *src)
3582 {
3583 errno_t result = 0;
3584 int failed = 0;
3585
3586 if (nstat_control_reporting_allowed(state, src))
3587 {
3588 if ((state->ncs_flags & NSTAT_FLAG_SUPPORTS_UPDATES) != 0)
3589 {
3590 result = nstat_control_send_update(state, src, 0, NSTAT_MSG_HDR_FLAG_CLOSING, NULL);
3591 if (result != 0)
3592 {
3593 failed = 1;
3594 if (nstat_debug != 0)
3595 printf("%s - nstat_control_send_update() %d\n", __func__, result);
3596 }
3597 }
3598 else
3599 {
3600 // send one last counts notification
3601 result = nstat_control_send_counts(state, src, 0, NSTAT_MSG_HDR_FLAG_CLOSING, NULL);
3602 if (result != 0)
3603 {
3604 failed = 1;
3605 if (nstat_debug != 0)
3606 printf("%s - nstat_control_send_counts() %d\n", __func__, result);
3607 }
3608
3609 // send a last description
3610 result = nstat_control_send_description(state, src, 0, NSTAT_MSG_HDR_FLAG_CLOSING);
3611 if (result != 0)
3612 {
3613 failed = 1;
3614 if (nstat_debug != 0)
3615 printf("%s - nstat_control_send_description() %d\n", __func__, result);
3616 }
3617 }
3618 }
3619
3620 // send the source removed notification
3621 result = nstat_control_send_removed(state, src);
3622 if (result != 0 && nstat_debug)
3623 {
3624 failed = 1;
3625 if (nstat_debug != 0)
3626 printf("%s - nstat_control_send_removed() %d\n", __func__, result);
3627 }
3628
3629 if (failed != 0)
3630 nstat_stats.nstat_control_send_goodbye_failures++;
3631
3632
3633 return result;
3634 }
3635
3636 static errno_t
3637 nstat_flush_accumulated_msgs(
3638 nstat_control_state *state)
3639 {
3640 errno_t result = 0;
3641 if (state->ncs_accumulated != NULL && mbuf_len(state->ncs_accumulated) > 0)
3642 {
3643 mbuf_pkthdr_setlen(state->ncs_accumulated, mbuf_len(state->ncs_accumulated));
3644 result = ctl_enqueuembuf(state->ncs_kctl, state->ncs_unit, state->ncs_accumulated, CTL_DATA_EOR);
3645 if (result != 0)
3646 {
3647 nstat_stats.nstat_flush_accumulated_msgs_failures++;
3648 if (nstat_debug != 0)
3649 printf("%s - ctl_enqueuembuf failed: %d\n", __func__, result);
3650 mbuf_freem(state->ncs_accumulated);
3651 }
3652 state->ncs_accumulated = NULL;
3653 }
3654 return result;
3655 }
3656
3657 static errno_t
3658 nstat_accumulate_msg(
3659 nstat_control_state *state,
3660 nstat_msg_hdr *hdr,
3661 size_t length)
3662 {
3663 if (state->ncs_accumulated && mbuf_trailingspace(state->ncs_accumulated) < length)
3664 {
3665 // Will send the current mbuf
3666 nstat_flush_accumulated_msgs(state);
3667 }
3668
3669 errno_t result = 0;
3670
3671 if (state->ncs_accumulated == NULL)
3672 {
3673 unsigned int one = 1;
3674 if (mbuf_allocpacket(MBUF_DONTWAIT, NSTAT_MAX_MSG_SIZE, &one, &state->ncs_accumulated) != 0)
3675 {
3676 if (nstat_debug != 0)
3677 printf("%s - mbuf_allocpacket failed\n", __func__);
3678 result = ENOMEM;
3679 }
3680 else
3681 {
3682 mbuf_setlen(state->ncs_accumulated, 0);
3683 }
3684 }
3685
3686 if (result == 0)
3687 {
3688 hdr->length = length;
3689 result = mbuf_copyback(state->ncs_accumulated, mbuf_len(state->ncs_accumulated),
3690 length, hdr, MBUF_DONTWAIT);
3691 }
3692
3693 if (result != 0)
3694 {
3695 nstat_flush_accumulated_msgs(state);
3696 if (nstat_debug != 0)
3697 printf("%s - resorting to ctl_enqueuedata\n", __func__);
3698 result = ctl_enqueuedata(state->ncs_kctl, state->ncs_unit, hdr, length, CTL_DATA_EOR);
3699 }
3700
3701 if (result != 0)
3702 nstat_stats.nstat_accumulate_msg_failures++;
3703
3704 return result;
3705 }
3706
3707 static void*
3708 nstat_idle_check(
3709 __unused thread_call_param_t p0,
3710 __unused thread_call_param_t p1)
3711 {
3712 nstat_control_state *control;
3713 nstat_src *src, *tmpsrc;
3714 tailq_head_nstat_src dead_list;
3715 TAILQ_INIT(&dead_list);
3716
3717 lck_mtx_lock(&nstat_mtx);
3718
3719 nstat_idle_time = 0;
3720
3721 for (control = nstat_controls; control; control = control->ncs_next)
3722 {
3723 lck_mtx_lock(&control->ncs_mtx);
3724 if (!(control->ncs_flags & NSTAT_FLAG_REQCOUNTS))
3725 {
3726 TAILQ_FOREACH_SAFE(src, &control->ncs_src_queue, ns_control_link, tmpsrc)
3727 {
3728 if (src->provider->nstat_gone(src->cookie))
3729 {
3730 errno_t result;
3731
3732 // Pull it off the list
3733 TAILQ_REMOVE(&control->ncs_src_queue, src, ns_control_link);
3734
3735 result = nstat_control_send_goodbye(control, src);
3736
3737 // Put this on the list to release later
3738 TAILQ_INSERT_TAIL(&dead_list, src, ns_control_link);
3739 }
3740 }
3741 }
3742 control->ncs_flags &= ~NSTAT_FLAG_REQCOUNTS;
3743 lck_mtx_unlock(&control->ncs_mtx);
3744 }
3745
3746 if (nstat_controls)
3747 {
3748 clock_interval_to_deadline(60, NSEC_PER_SEC, &nstat_idle_time);
3749 thread_call_func_delayed((thread_call_func_t)nstat_idle_check, NULL, nstat_idle_time);
3750 }
3751
3752 lck_mtx_unlock(&nstat_mtx);
3753
3754 /* Generate any system level reports, if needed */
3755 nstat_sysinfo_generate_report();
3756
3757 // Release the sources now that we aren't holding lots of locks
3758 while ((src = TAILQ_FIRST(&dead_list)))
3759 {
3760 TAILQ_REMOVE(&dead_list, src, ns_control_link);
3761 nstat_control_cleanup_source(NULL, src, FALSE);
3762 }
3763
3764
3765 return NULL;
3766 }
3767
3768 static void
3769 nstat_control_register(void)
3770 {
3771 // Create our lock group first
3772 lck_grp_attr_t *grp_attr = lck_grp_attr_alloc_init();
3773 lck_grp_attr_setdefault(grp_attr);
3774 nstat_lck_grp = lck_grp_alloc_init("network statistics kctl", grp_attr);
3775 lck_grp_attr_free(grp_attr);
3776
3777 lck_mtx_init(&nstat_mtx, nstat_lck_grp, NULL);
3778
3779 // Register the control
3780 struct kern_ctl_reg nstat_control;
3781 bzero(&nstat_control, sizeof(nstat_control));
3782 strlcpy(nstat_control.ctl_name, NET_STAT_CONTROL_NAME, sizeof(nstat_control.ctl_name));
3783 nstat_control.ctl_flags = CTL_FLAG_REG_EXTENDED | CTL_FLAG_REG_CRIT;
3784 nstat_control.ctl_sendsize = nstat_sendspace;
3785 nstat_control.ctl_recvsize = nstat_recvspace;
3786 nstat_control.ctl_connect = nstat_control_connect;
3787 nstat_control.ctl_disconnect = nstat_control_disconnect;
3788 nstat_control.ctl_send = nstat_control_send;
3789
3790 ctl_register(&nstat_control, &nstat_ctlref);
3791 }
3792
3793 static void
3794 nstat_control_cleanup_source(
3795 nstat_control_state *state,
3796 struct nstat_src *src,
3797 boolean_t locked)
3798 {
3799 errno_t result;
3800
3801 if (state)
3802 {
3803 result = nstat_control_send_removed(state, src);
3804 if (result != 0)
3805 {
3806 nstat_stats.nstat_control_cleanup_source_failures++;
3807 if (nstat_debug != 0)
3808 printf("%s - nstat_control_send_removed() %d\n",
3809 __func__, result);
3810 }
3811 }
3812 // Cleanup the source if we found it.
3813 src->provider->nstat_release(src->cookie, locked);
3814 OSFree(src, sizeof(*src), nstat_malloc_tag);
3815 }
3816
3817
3818 static bool
3819 nstat_control_reporting_allowed(
3820 nstat_control_state *state,
3821 nstat_src *src)
3822 {
3823 if (src->provider->nstat_reporting_allowed == NULL)
3824 return TRUE;
3825
3826 return (
3827 src->provider->nstat_reporting_allowed(src->cookie,
3828 &state->ncs_provider_filters[src->provider->nstat_provider_id])
3829 );
3830 }
3831
3832
3833 static errno_t
3834 nstat_control_connect(
3835 kern_ctl_ref kctl,
3836 struct sockaddr_ctl *sac,
3837 void **uinfo)
3838 {
3839 nstat_control_state *state = OSMalloc(sizeof(*state), nstat_malloc_tag);
3840 if (state == NULL) return ENOMEM;
3841
3842 bzero(state, sizeof(*state));
3843 lck_mtx_init(&state->ncs_mtx, nstat_lck_grp, NULL);
3844 state->ncs_kctl = kctl;
3845 state->ncs_unit = sac->sc_unit;
3846 state->ncs_flags = NSTAT_FLAG_REQCOUNTS;
3847 *uinfo = state;
3848
3849 lck_mtx_lock(&nstat_mtx);
3850 state->ncs_next = nstat_controls;
3851 nstat_controls = state;
3852
3853 if (nstat_idle_time == 0)
3854 {
3855 clock_interval_to_deadline(60, NSEC_PER_SEC, &nstat_idle_time);
3856 thread_call_func_delayed((thread_call_func_t)nstat_idle_check, NULL, nstat_idle_time);
3857 }
3858
3859 lck_mtx_unlock(&nstat_mtx);
3860
3861 return 0;
3862 }
3863
3864 static errno_t
3865 nstat_control_disconnect(
3866 __unused kern_ctl_ref kctl,
3867 __unused u_int32_t unit,
3868 void *uinfo)
3869 {
3870 u_int32_t watching;
3871 nstat_control_state *state = (nstat_control_state*)uinfo;
3872 tailq_head_nstat_src cleanup_list;
3873 nstat_src *src;
3874
3875 TAILQ_INIT(&cleanup_list);
3876
3877 // pull it out of the global list of states
3878 lck_mtx_lock(&nstat_mtx);
3879 nstat_control_state **statepp;
3880 for (statepp = &nstat_controls; *statepp; statepp = &(*statepp)->ncs_next)
3881 {
3882 if (*statepp == state)
3883 {
3884 *statepp = state->ncs_next;
3885 break;
3886 }
3887 }
3888 lck_mtx_unlock(&nstat_mtx);
3889
3890 lck_mtx_lock(&state->ncs_mtx);
3891 // Stop watching for sources
3892 nstat_provider *provider;
3893 watching = state->ncs_watching;
3894 state->ncs_watching = 0;
3895 for (provider = nstat_providers; provider && watching; provider = provider->next)
3896 {
3897 if ((watching & (1 << provider->nstat_provider_id)) != 0)
3898 {
3899 watching &= ~(1 << provider->nstat_provider_id);
3900 provider->nstat_watcher_remove(state);
3901 }
3902 }
3903
3904 // set cleanup flags
3905 state->ncs_flags |= NSTAT_FLAG_CLEANUP;
3906
3907 if (state->ncs_accumulated)
3908 {
3909 mbuf_freem(state->ncs_accumulated);
3910 state->ncs_accumulated = NULL;
3911 }
3912
3913 // Copy out the list of sources
3914 TAILQ_CONCAT(&cleanup_list, &state->ncs_src_queue, ns_control_link);
3915 lck_mtx_unlock(&state->ncs_mtx);
3916
3917 while ((src = TAILQ_FIRST(&cleanup_list)))
3918 {
3919 TAILQ_REMOVE(&cleanup_list, src, ns_control_link);
3920 nstat_control_cleanup_source(NULL, src, FALSE);
3921 }
3922
3923 lck_mtx_destroy(&state->ncs_mtx, nstat_lck_grp);
3924 OSFree(state, sizeof(*state), nstat_malloc_tag);
3925
3926 return 0;
3927 }
3928
3929 static nstat_src_ref_t
3930 nstat_control_next_src_ref(
3931 nstat_control_state *state)
3932 {
3933 return ++state->ncs_next_srcref;
3934 }
3935
3936 static errno_t
3937 nstat_control_send_counts(
3938 nstat_control_state *state,
3939 nstat_src *src,
3940 unsigned long long context,
3941 u_int16_t hdr_flags,
3942 int *gone)
3943 {
3944 nstat_msg_src_counts counts;
3945 errno_t result = 0;
3946
3947 /* Some providers may not have any counts to send */
3948 if (src->provider->nstat_counts == NULL)
3949 return (0);
3950
3951 bzero(&counts, sizeof(counts));
3952 counts.hdr.type = NSTAT_MSG_TYPE_SRC_COUNTS;
3953 counts.hdr.length = sizeof(counts);
3954 counts.hdr.flags = hdr_flags;
3955 counts.hdr.context = context;
3956 counts.srcref = src->srcref;
3957 counts.event_flags = 0;
3958
3959 if (src->provider->nstat_counts(src->cookie, &counts.counts, gone) == 0)
3960 {
3961 if ((src->filter & NSTAT_FILTER_NOZEROBYTES) &&
3962 counts.counts.nstat_rxbytes == 0 &&
3963 counts.counts.nstat_txbytes == 0)
3964 {
3965 result = EAGAIN;
3966 }
3967 else
3968 {
3969 result = ctl_enqueuedata(state->ncs_kctl,
3970 state->ncs_unit, &counts, sizeof(counts),
3971 CTL_DATA_EOR);
3972 if (result != 0)
3973 nstat_stats.nstat_sendcountfailures += 1;
3974 }
3975 }
3976 return result;
3977 }
3978
3979 static errno_t
3980 nstat_control_append_counts(
3981 nstat_control_state *state,
3982 nstat_src *src,
3983 int *gone)
3984 {
3985 /* Some providers may not have any counts to send */
3986 if (!src->provider->nstat_counts) return 0;
3987
3988 nstat_msg_src_counts counts;
3989 bzero(&counts, sizeof(counts));
3990 counts.hdr.type = NSTAT_MSG_TYPE_SRC_COUNTS;
3991 counts.hdr.length = sizeof(counts);
3992 counts.srcref = src->srcref;
3993 counts.event_flags = 0;
3994
3995 errno_t result = 0;
3996 result = src->provider->nstat_counts(src->cookie, &counts.counts, gone);
3997 if (result != 0)
3998 {
3999 return result;
4000 }
4001
4002 if ((src->filter & NSTAT_FILTER_NOZEROBYTES) == NSTAT_FILTER_NOZEROBYTES &&
4003 counts.counts.nstat_rxbytes == 0 && counts.counts.nstat_txbytes == 0)
4004 {
4005 return EAGAIN;
4006 }
4007
4008 return nstat_accumulate_msg(state, &counts.hdr, counts.hdr.length);
4009 }
4010
4011 static int
4012 nstat_control_send_description(
4013 nstat_control_state *state,
4014 nstat_src *src,
4015 u_int64_t context,
4016 u_int16_t hdr_flags)
4017 {
4018 // Provider doesn't support getting the descriptor? Done.
4019 if (src->provider->nstat_descriptor_length == 0 ||
4020 src->provider->nstat_copy_descriptor == NULL)
4021 {
4022 return EOPNOTSUPP;
4023 }
4024
4025 // Allocate storage for the descriptor message
4026 mbuf_t msg;
4027 unsigned int one = 1;
4028 u_int32_t size = offsetof(nstat_msg_src_description, data) + src->provider->nstat_descriptor_length;
4029 if (mbuf_allocpacket(MBUF_DONTWAIT, size, &one, &msg) != 0)
4030 {
4031 return ENOMEM;
4032 }
4033
4034 nstat_msg_src_description *desc = (nstat_msg_src_description*)mbuf_data(msg);
4035 bzero(desc, size);
4036 mbuf_setlen(msg, size);
4037 mbuf_pkthdr_setlen(msg, mbuf_len(msg));
4038
4039 // Query the provider for the provider specific bits
4040 errno_t result = src->provider->nstat_copy_descriptor(src->cookie, desc->data, src->provider->nstat_descriptor_length);
4041
4042 if (result != 0)
4043 {
4044 mbuf_freem(msg);
4045 return result;
4046 }
4047
4048 desc->hdr.context = context;
4049 desc->hdr.type = NSTAT_MSG_TYPE_SRC_DESC;
4050 desc->hdr.length = size;
4051 desc->hdr.flags = hdr_flags;
4052 desc->srcref = src->srcref;
4053 desc->event_flags = 0;
4054 desc->provider = src->provider->nstat_provider_id;
4055
4056 result = ctl_enqueuembuf(state->ncs_kctl, state->ncs_unit, msg, CTL_DATA_EOR);
4057 if (result != 0)
4058 {
4059 nstat_stats.nstat_descriptionfailures += 1;
4060 mbuf_freem(msg);
4061 }
4062
4063 return result;
4064 }
4065
4066 static errno_t
4067 nstat_control_append_description(
4068 nstat_control_state *state,
4069 nstat_src *src)
4070 {
4071 size_t size = offsetof(nstat_msg_src_description, data) + src->provider->nstat_descriptor_length;
4072 if (size > 512 || src->provider->nstat_descriptor_length == 0 ||
4073 src->provider->nstat_copy_descriptor == NULL)
4074 {
4075 return EOPNOTSUPP;
4076 }
4077
4078 // Fill out a buffer on the stack, we will copy to the mbuf later
4079 u_int64_t buffer[size/sizeof(u_int64_t) + 1]; // u_int64_t to ensure alignment
4080 bzero(buffer, size);
4081
4082 nstat_msg_src_description *desc = (nstat_msg_src_description*)buffer;
4083 desc->hdr.type = NSTAT_MSG_TYPE_SRC_DESC;
4084 desc->hdr.length = size;
4085 desc->srcref = src->srcref;
4086 desc->event_flags = 0;
4087 desc->provider = src->provider->nstat_provider_id;
4088
4089 errno_t result = 0;
4090 // Fill in the description
4091 // Query the provider for the provider specific bits
4092 result = src->provider->nstat_copy_descriptor(src->cookie, desc->data,
4093 src->provider->nstat_descriptor_length);
4094 if (result != 0)
4095 {
4096 return result;
4097 }
4098
4099 return nstat_accumulate_msg(state, &desc->hdr, size);
4100 }
4101
4102 static int
4103 nstat_control_send_update(
4104 nstat_control_state *state,
4105 nstat_src *src,
4106 u_int64_t context,
4107 u_int16_t hdr_flags,
4108 int *gone)
4109 {
4110 // Provider doesn't support getting the descriptor or counts? Done.
4111 if ((src->provider->nstat_descriptor_length == 0 ||
4112 src->provider->nstat_copy_descriptor == NULL) &&
4113 src->provider->nstat_counts == NULL)
4114 {
4115 return EOPNOTSUPP;
4116 }
4117
4118 // Allocate storage for the descriptor message
4119 mbuf_t msg;
4120 unsigned int one = 1;
4121 u_int32_t size = offsetof(nstat_msg_src_update, data) +
4122 src->provider->nstat_descriptor_length;
4123 if (mbuf_allocpacket(MBUF_DONTWAIT, size, &one, &msg) != 0)
4124 {
4125 return ENOMEM;
4126 }
4127
4128 nstat_msg_src_update *desc = (nstat_msg_src_update*)mbuf_data(msg);
4129 bzero(desc, size);
4130 desc->hdr.context = context;
4131 desc->hdr.type = NSTAT_MSG_TYPE_SRC_UPDATE;
4132 desc->hdr.length = size;
4133 desc->hdr.flags = hdr_flags;
4134 desc->srcref = src->srcref;
4135 desc->event_flags = 0;
4136 desc->provider = src->provider->nstat_provider_id;
4137
4138 mbuf_setlen(msg, size);
4139 mbuf_pkthdr_setlen(msg, mbuf_len(msg));
4140
4141 errno_t result = 0;
4142 if (src->provider->nstat_descriptor_length != 0 && src->provider->nstat_copy_descriptor)
4143 {
4144 // Query the provider for the provider specific bits
4145 result = src->provider->nstat_copy_descriptor(src->cookie, desc->data,
4146 src->provider->nstat_descriptor_length);
4147 if (result != 0)
4148 {
4149 mbuf_freem(msg);
4150 return result;
4151 }
4152 }
4153
4154 if (src->provider->nstat_counts)
4155 {
4156 result = src->provider->nstat_counts(src->cookie, &desc->counts, gone);
4157 if (result == 0)
4158 {
4159 if ((src->filter & NSTAT_FILTER_NOZEROBYTES) == NSTAT_FILTER_NOZEROBYTES &&
4160 desc->counts.nstat_rxbytes == 0 && desc->counts.nstat_txbytes == 0)
4161 {
4162 result = EAGAIN;
4163 }
4164 else
4165 {
4166 result = ctl_enqueuembuf(state->ncs_kctl, state->ncs_unit, msg, CTL_DATA_EOR);
4167 }
4168 }
4169 }
4170
4171 if (result != 0)
4172 {
4173 nstat_stats.nstat_srcupatefailures += 1;
4174 mbuf_freem(msg);
4175 }
4176
4177 return result;
4178 }
4179
4180 static errno_t
4181 nstat_control_append_update(
4182 nstat_control_state *state,
4183 nstat_src *src,
4184 int *gone)
4185 {
4186 size_t size = offsetof(nstat_msg_src_update, data) + src->provider->nstat_descriptor_length;
4187 if (size > 512 || ((src->provider->nstat_descriptor_length == 0 ||
4188 src->provider->nstat_copy_descriptor == NULL) &&
4189 src->provider->nstat_counts == NULL))
4190 {
4191 return EOPNOTSUPP;
4192 }
4193
4194 // Fill out a buffer on the stack, we will copy to the mbuf later
4195 u_int64_t buffer[size/sizeof(u_int64_t) + 1]; // u_int64_t to ensure alignment
4196 bzero(buffer, size);
4197
4198 nstat_msg_src_update *desc = (nstat_msg_src_update*)buffer;
4199 desc->hdr.type = NSTAT_MSG_TYPE_SRC_UPDATE;
4200 desc->hdr.length = size;
4201 desc->srcref = src->srcref;
4202 desc->event_flags = 0;
4203 desc->provider = src->provider->nstat_provider_id;
4204
4205 errno_t result = 0;
4206 // Fill in the description
4207 if (src->provider->nstat_descriptor_length != 0 && src->provider->nstat_copy_descriptor)
4208 {
4209 // Query the provider for the provider specific bits
4210 result = src->provider->nstat_copy_descriptor(src->cookie, desc->data,
4211 src->provider->nstat_descriptor_length);
4212 if (result != 0)
4213 {
4214 nstat_stats.nstat_copy_descriptor_failures++;
4215 if (nstat_debug != 0)
4216 printf("%s: src->provider->nstat_copy_descriptor: %d\n", __func__, result);
4217 return result;
4218 }
4219 }
4220
4221 if (src->provider->nstat_counts)
4222 {
4223 result = src->provider->nstat_counts(src->cookie, &desc->counts, gone);
4224 if (result != 0)
4225 {
4226 nstat_stats.nstat_provider_counts_failures++;
4227 if (nstat_debug != 0)
4228 printf("%s: src->provider->nstat_counts: %d\n", __func__, result);
4229 return result;
4230 }
4231
4232 if ((src->filter & NSTAT_FILTER_NOZEROBYTES) == NSTAT_FILTER_NOZEROBYTES &&
4233 desc->counts.nstat_rxbytes == 0 && desc->counts.nstat_txbytes == 0)
4234 {
4235 return EAGAIN;
4236 }
4237 }
4238
4239 return nstat_accumulate_msg(state, &desc->hdr, size);
4240 }
4241
4242 static errno_t
4243 nstat_control_send_removed(
4244 nstat_control_state *state,
4245 nstat_src *src)
4246 {
4247 nstat_msg_src_removed removed;
4248 errno_t result;
4249
4250 bzero(&removed, sizeof(removed));
4251 removed.hdr.type = NSTAT_MSG_TYPE_SRC_REMOVED;
4252 removed.hdr.length = sizeof(removed);
4253 removed.hdr.context = 0;
4254 removed.srcref = src->srcref;
4255 result = ctl_enqueuedata(state->ncs_kctl, state->ncs_unit, &removed,
4256 sizeof(removed), CTL_DATA_EOR | CTL_DATA_CRIT);
4257 if (result != 0)
4258 nstat_stats.nstat_msgremovedfailures += 1;
4259
4260 return result;
4261 }
4262
4263 static errno_t
4264 nstat_control_handle_add_request(
4265 nstat_control_state *state,
4266 mbuf_t m)
4267 {
4268 errno_t result;
4269
4270 // Verify the header fits in the first mbuf
4271 if (mbuf_len(m) < offsetof(nstat_msg_add_src_req, param))
4272 {
4273 return EINVAL;
4274 }
4275
4276 // Calculate the length of the parameter field
4277 int32_t paramlength = mbuf_pkthdr_len(m) - offsetof(nstat_msg_add_src_req, param);
4278 if (paramlength < 0 || paramlength > 2 * 1024)
4279 {
4280 return EINVAL;
4281 }
4282
4283 nstat_provider *provider = NULL;
4284 nstat_provider_cookie_t cookie = NULL;
4285 nstat_msg_add_src_req *req = mbuf_data(m);
4286 if (mbuf_pkthdr_len(m) > mbuf_len(m))
4287 {
4288 // parameter is too large, we need to make a contiguous copy
4289 void *data = OSMalloc(paramlength, nstat_malloc_tag);
4290
4291 if (!data) return ENOMEM;
4292 result = mbuf_copydata(m, offsetof(nstat_msg_add_src_req, param), paramlength, data);
4293 if (result == 0)
4294 result = nstat_lookup_entry(req->provider, data, paramlength, &provider, &cookie);
4295 OSFree(data, paramlength, nstat_malloc_tag);
4296 }
4297 else
4298 {
4299 result = nstat_lookup_entry(req->provider, (void*)&req->param, paramlength, &provider, &cookie);
4300 }
4301
4302 if (result != 0)
4303 {
4304 return result;
4305 }
4306
4307 result = nstat_control_source_add(req->hdr.context, state, provider, cookie);
4308 if (result != 0)
4309 provider->nstat_release(cookie, 0);
4310
4311 return result;
4312 }
4313
4314 static errno_t
4315 nstat_set_provider_filter(
4316 nstat_control_state *state,
4317 nstat_msg_add_all_srcs *req)
4318 {
4319 nstat_provider_id_t provider_id = req->provider;
4320
4321 u_int32_t prev_ncs_watching = atomic_or_32_ov(&state->ncs_watching, (1 << provider_id));
4322
4323 if ((prev_ncs_watching & (1 << provider_id)) != 0)
4324 return EALREADY;
4325
4326 state->ncs_watching |= (1 << provider_id);
4327 state->ncs_provider_filters[provider_id].npf_flags = req->filter;
4328 state->ncs_provider_filters[provider_id].npf_events = req->events;
4329 state->ncs_provider_filters[provider_id].npf_pid = req->target_pid;
4330 uuid_copy(state->ncs_provider_filters[provider_id].npf_uuid, req->target_uuid);
4331 return 0;
4332 }
4333
4334 static errno_t
4335 nstat_control_handle_add_all(
4336 nstat_control_state *state,
4337 mbuf_t m)
4338 {
4339 errno_t result = 0;
4340
4341 // Verify the header fits in the first mbuf
4342 if (mbuf_len(m) < sizeof(nstat_msg_add_all_srcs))
4343 {
4344 return EINVAL;
4345 }
4346
4347 nstat_msg_add_all_srcs *req = mbuf_data(m);
4348 if (req->provider > NSTAT_PROVIDER_LAST) return ENOENT;
4349
4350 nstat_provider *provider = nstat_find_provider_by_id(req->provider);
4351
4352 if (!provider) return ENOENT;
4353 if (provider->nstat_watcher_add == NULL) return ENOTSUP;
4354
4355 if (nstat_privcheck != 0) {
4356 result = priv_check_cred(kauth_cred_get(),
4357 PRIV_NET_PRIVILEGED_NETWORK_STATISTICS, 0);
4358 if (result != 0)
4359 return result;
4360 }
4361
4362 lck_mtx_lock(&state->ncs_mtx);
4363 if (req->filter & NSTAT_FILTER_SUPPRESS_SRC_ADDED)
4364 {
4365 // Suppression of source messages implicitly requires the use of update messages
4366 state->ncs_flags |= NSTAT_FLAG_SUPPORTS_UPDATES;
4367 }
4368 lck_mtx_unlock(&state->ncs_mtx);
4369
4370 // rdar://problem/30301300 Different providers require different synchronization
4371 // to ensure that a new entry does not get double counted due to being added prior
4372 // to all current provider entries being added. Hence pass the provider the details
4373 // in the original request for this to be applied atomically
4374
4375 result = provider->nstat_watcher_add(state, req);
4376
4377 if (result == 0)
4378 nstat_enqueue_success(req->hdr.context, state, 0);
4379
4380 return result;
4381 }
4382
4383 static errno_t
4384 nstat_control_source_add(
4385 u_int64_t context,
4386 nstat_control_state *state,
4387 nstat_provider *provider,
4388 nstat_provider_cookie_t cookie)
4389 {
4390 // Fill out source added message if appropriate
4391 mbuf_t msg = NULL;
4392 nstat_src_ref_t *srcrefp = NULL;
4393
4394 u_int64_t provider_filter_flagss =
4395 state->ncs_provider_filters[provider->nstat_provider_id].npf_flags;
4396 boolean_t tell_user =
4397 ((provider_filter_flagss & NSTAT_FILTER_SUPPRESS_SRC_ADDED) == 0);
4398 u_int32_t src_filter =
4399 (provider_filter_flagss & NSTAT_FILTER_PROVIDER_NOZEROBYTES)
4400 ? NSTAT_FILTER_NOZEROBYTES : 0;
4401
4402 if (provider_filter_flagss & NSTAT_FILTER_TCP_NO_EARLY_CLOSE)
4403 {
4404 src_filter |= NSTAT_FILTER_TCP_NO_EARLY_CLOSE;
4405 }
4406
4407 if (tell_user)
4408 {
4409 unsigned int one = 1;
4410
4411 if (mbuf_allocpacket(MBUF_DONTWAIT, sizeof(nstat_msg_src_added),
4412 &one, &msg) != 0)
4413 return ENOMEM;
4414
4415 mbuf_setlen(msg, sizeof(nstat_msg_src_added));
4416 mbuf_pkthdr_setlen(msg, mbuf_len(msg));
4417 nstat_msg_src_added *add = mbuf_data(msg);
4418 bzero(add, sizeof(*add));
4419 add->hdr.type = NSTAT_MSG_TYPE_SRC_ADDED;
4420 add->hdr.length = mbuf_len(msg);
4421 add->hdr.context = context;
4422 add->provider = provider->nstat_provider_id;
4423 srcrefp = &add->srcref;
4424 }
4425
4426 // Allocate storage for the source
4427 nstat_src *src = OSMalloc(sizeof(*src), nstat_malloc_tag);
4428 if (src == NULL)
4429 {
4430 if (msg) mbuf_freem(msg);
4431 return ENOMEM;
4432 }
4433
4434 // Fill in the source, including picking an unused source ref
4435 lck_mtx_lock(&state->ncs_mtx);
4436
4437 src->srcref = nstat_control_next_src_ref(state);
4438 if (srcrefp)
4439 *srcrefp = src->srcref;
4440
4441 if (state->ncs_flags & NSTAT_FLAG_CLEANUP || src->srcref == NSTAT_SRC_REF_INVALID)
4442 {
4443 lck_mtx_unlock(&state->ncs_mtx);
4444 OSFree(src, sizeof(*src), nstat_malloc_tag);
4445 if (msg) mbuf_freem(msg);
4446 return EINVAL;
4447 }
4448 src->provider = provider;
4449 src->cookie = cookie;
4450 src->filter = src_filter;
4451 src->seq = 0;
4452
4453 if (msg)
4454 {
4455 // send the source added message if appropriate
4456 errno_t result = ctl_enqueuembuf(state->ncs_kctl, state->ncs_unit, msg,
4457 CTL_DATA_EOR);
4458 if (result != 0)
4459 {
4460 nstat_stats.nstat_srcaddedfailures += 1;
4461 lck_mtx_unlock(&state->ncs_mtx);
4462 OSFree(src, sizeof(*src), nstat_malloc_tag);
4463 mbuf_freem(msg);
4464 return result;
4465 }
4466 }
4467 // Put the source in the list
4468 TAILQ_INSERT_HEAD(&state->ncs_src_queue, src, ns_control_link);
4469 src->ns_control = state;
4470
4471 lck_mtx_unlock(&state->ncs_mtx);
4472
4473 return 0;
4474 }
4475
4476 static errno_t
4477 nstat_control_handle_remove_request(
4478 nstat_control_state *state,
4479 mbuf_t m)
4480 {
4481 nstat_src_ref_t srcref = NSTAT_SRC_REF_INVALID;
4482 nstat_src *src;
4483
4484 if (mbuf_copydata(m, offsetof(nstat_msg_rem_src_req, srcref), sizeof(srcref), &srcref) != 0)
4485 {
4486 return EINVAL;
4487 }
4488
4489 lck_mtx_lock(&state->ncs_mtx);
4490
4491 // Remove this source as we look for it
4492 TAILQ_FOREACH(src, &state->ncs_src_queue, ns_control_link)
4493 {
4494 if (src->srcref == srcref)
4495 {
4496 break;
4497 }
4498 }
4499 if (src)
4500 {
4501 TAILQ_REMOVE(&state->ncs_src_queue, src, ns_control_link);
4502 }
4503
4504 lck_mtx_unlock(&state->ncs_mtx);
4505
4506 if (src) nstat_control_cleanup_source(state, src, FALSE);
4507
4508 return src ? 0 : ENOENT;
4509 }
4510
4511 static errno_t
4512 nstat_control_handle_query_request(
4513 nstat_control_state *state,
4514 mbuf_t m)
4515 {
4516 // TBD: handle this from another thread so we can enqueue a lot of data
4517 // As written, if a client requests query all, this function will be
4518 // called from their send of the request message. We will attempt to write
4519 // responses and succeed until the buffer fills up. Since the clients thread
4520 // is blocked on send, it won't be reading unless the client has two threads
4521 // using this socket, one for read and one for write. Two threads probably
4522 // won't work with this code anyhow since we don't have proper locking in
4523 // place yet.
4524 tailq_head_nstat_src dead_list;
4525 errno_t result = ENOENT;
4526 nstat_msg_query_src_req req;
4527
4528 if (mbuf_copydata(m, 0, sizeof(req), &req) != 0)
4529 {
4530 return EINVAL;
4531 }
4532
4533 const boolean_t all_srcs = (req.srcref == NSTAT_SRC_REF_ALL);
4534 TAILQ_INIT(&dead_list);
4535
4536 lck_mtx_lock(&state->ncs_mtx);
4537
4538 if (all_srcs)
4539 {
4540 state->ncs_flags |= NSTAT_FLAG_REQCOUNTS;
4541 }
4542 nstat_src *src, *tmpsrc;
4543 u_int64_t src_count = 0;
4544 boolean_t partial = FALSE;
4545
4546 /*
4547 * Error handling policy and sequence number generation is folded into
4548 * nstat_control_begin_query.
4549 */
4550 partial = nstat_control_begin_query(state, &req.hdr);
4551
4552
4553 TAILQ_FOREACH_SAFE(src, &state->ncs_src_queue, ns_control_link, tmpsrc)
4554 {
4555 int gone = 0;
4556
4557 // XXX ignore IFACE types?
4558 if (all_srcs || src->srcref == req.srcref)
4559 {
4560 if (nstat_control_reporting_allowed(state, src)
4561 && (!partial || !all_srcs || src->seq != state->ncs_seq))
4562 {
4563 if (all_srcs &&
4564 (req.hdr.flags & NSTAT_MSG_HDR_FLAG_SUPPORTS_AGGREGATE) != 0)
4565 {
4566 result = nstat_control_append_counts(state, src, &gone);
4567 }
4568 else
4569 {
4570 result = nstat_control_send_counts(state, src, req.hdr.context, 0, &gone);
4571 }
4572
4573 if (ENOMEM == result || ENOBUFS == result)
4574 {
4575 /*
4576 * If the counts message failed to
4577 * enqueue then we should clear our flag so
4578 * that a client doesn't miss anything on
4579 * idle cleanup. We skip the "gone"
4580 * processing in the hope that we may
4581 * catch it another time.
4582 */
4583 state->ncs_flags &= ~NSTAT_FLAG_REQCOUNTS;
4584 break;
4585 }
4586 if (partial)
4587 {
4588 /*
4589 * We skip over hard errors and
4590 * filtered sources.
4591 */
4592 src->seq = state->ncs_seq;
4593 src_count++;
4594 }
4595 }
4596 }
4597
4598 if (gone)
4599 {
4600 // send one last descriptor message so client may see last state
4601 // If we can't send the notification now, it
4602 // will be sent in the idle cleanup.
4603 result = nstat_control_send_description(state, src, 0, 0);
4604 if (result != 0)
4605 {
4606 nstat_stats.nstat_control_send_description_failures++;
4607 if (nstat_debug != 0)
4608 printf("%s - nstat_control_send_description() %d\n", __func__, result);
4609 state->ncs_flags &= ~NSTAT_FLAG_REQCOUNTS;
4610 break;
4611 }
4612
4613 // pull src out of the list
4614 TAILQ_REMOVE(&state->ncs_src_queue, src, ns_control_link);
4615 TAILQ_INSERT_TAIL(&dead_list, src, ns_control_link);
4616 }
4617
4618 if (all_srcs)
4619 {
4620 if (src_count >= QUERY_CONTINUATION_SRC_COUNT)
4621 {
4622 break;
4623 }
4624 }
4625 else if (req.srcref == src->srcref)
4626 {
4627 break;
4628 }
4629 }
4630
4631 nstat_flush_accumulated_msgs(state);
4632
4633 u_int16_t flags = 0;
4634 if (req.srcref == NSTAT_SRC_REF_ALL)
4635 flags = nstat_control_end_query(state, src, partial);
4636
4637 lck_mtx_unlock(&state->ncs_mtx);
4638
4639 /*
4640 * If an error occurred enqueueing data, then allow the error to
4641 * propagate to nstat_control_send. This way, the error is sent to
4642 * user-level.
4643 */
4644 if (all_srcs && ENOMEM != result && ENOBUFS != result)
4645 {
4646 nstat_enqueue_success(req.hdr.context, state, flags);
4647 result = 0;
4648 }
4649
4650 while ((src = TAILQ_FIRST(&dead_list)))
4651 {
4652 TAILQ_REMOVE(&dead_list, src, ns_control_link);
4653 nstat_control_cleanup_source(state, src, FALSE);
4654 }
4655
4656 return result;
4657 }
4658
4659 static errno_t
4660 nstat_control_handle_get_src_description(
4661 nstat_control_state *state,
4662 mbuf_t m)
4663 {
4664 nstat_msg_get_src_description req;
4665 errno_t result = ENOENT;
4666 nstat_src *src;
4667
4668 if (mbuf_copydata(m, 0, sizeof(req), &req) != 0)
4669 {
4670 return EINVAL;
4671 }
4672
4673 lck_mtx_lock(&state->ncs_mtx);
4674 u_int64_t src_count = 0;
4675 boolean_t partial = FALSE;
4676 const boolean_t all_srcs = (req.srcref == NSTAT_SRC_REF_ALL);
4677
4678 /*
4679 * Error handling policy and sequence number generation is folded into
4680 * nstat_control_begin_query.
4681 */
4682 partial = nstat_control_begin_query(state, &req.hdr);
4683
4684 TAILQ_FOREACH(src, &state->ncs_src_queue, ns_control_link)
4685 {
4686 if (all_srcs || src->srcref == req.srcref)
4687 {
4688 if (nstat_control_reporting_allowed(state, src)
4689 && (!all_srcs || !partial || src->seq != state->ncs_seq))
4690 {
4691 if ((req.hdr.flags & NSTAT_MSG_HDR_FLAG_SUPPORTS_AGGREGATE) != 0 && all_srcs)
4692 {
4693 result = nstat_control_append_description(state, src);
4694 }
4695 else
4696 {
4697 result = nstat_control_send_description(state, src, req.hdr.context, 0);
4698 }
4699
4700 if (ENOMEM == result || ENOBUFS == result)
4701 {
4702 /*
4703 * If the description message failed to
4704 * enqueue then we give up for now.
4705 */
4706 break;
4707 }
4708 if (partial)
4709 {
4710 /*
4711 * Note, we skip over hard errors and
4712 * filtered sources.
4713 */
4714 src->seq = state->ncs_seq;
4715 src_count++;
4716 if (src_count >= QUERY_CONTINUATION_SRC_COUNT)
4717 {
4718 break;
4719 }
4720 }
4721 }
4722
4723 if (!all_srcs)
4724 {
4725 break;
4726 }
4727 }
4728 }
4729 nstat_flush_accumulated_msgs(state);
4730
4731 u_int16_t flags = 0;
4732 if (req.srcref == NSTAT_SRC_REF_ALL)
4733 flags = nstat_control_end_query(state, src, partial);
4734
4735 lck_mtx_unlock(&state->ncs_mtx);
4736 /*
4737 * If an error occurred enqueueing data, then allow the error to
4738 * propagate to nstat_control_send. This way, the error is sent to
4739 * user-level.
4740 */
4741 if (all_srcs && ENOMEM != result && ENOBUFS != result)
4742 {
4743 nstat_enqueue_success(req.hdr.context, state, flags);
4744 result = 0;
4745 }
4746
4747 return result;
4748 }
4749
4750 static errno_t
4751 nstat_control_handle_set_filter(
4752 nstat_control_state *state,
4753 mbuf_t m)
4754 {
4755 nstat_msg_set_filter req;
4756 nstat_src *src;
4757
4758 if (mbuf_copydata(m, 0, sizeof(req), &req) != 0)
4759 return EINVAL;
4760 if (req.srcref == NSTAT_SRC_REF_ALL ||
4761 req.srcref == NSTAT_SRC_REF_INVALID)
4762 return EINVAL;
4763
4764 lck_mtx_lock(&state->ncs_mtx);
4765 TAILQ_FOREACH(src, &state->ncs_src_queue, ns_control_link)
4766 {
4767 if (req.srcref == src->srcref)
4768 {
4769 src->filter = req.filter;
4770 break;
4771 }
4772 }
4773 lck_mtx_unlock(&state->ncs_mtx);
4774 if (src == NULL)
4775 return ENOENT;
4776
4777 return 0;
4778 }
4779
4780 static void
4781 nstat_send_error(
4782 nstat_control_state *state,
4783 u_int64_t context,
4784 u_int32_t error)
4785 {
4786 errno_t result;
4787 struct nstat_msg_error err;
4788
4789 bzero(&err, sizeof(err));
4790 err.hdr.type = NSTAT_MSG_TYPE_ERROR;
4791 err.hdr.length = sizeof(err);
4792 err.hdr.context = context;
4793 err.error = error;
4794
4795 result = ctl_enqueuedata(state->ncs_kctl, state->ncs_unit, &err,
4796 sizeof(err), CTL_DATA_EOR | CTL_DATA_CRIT);
4797 if (result != 0)
4798 nstat_stats.nstat_msgerrorfailures++;
4799 }
4800
4801 static boolean_t
4802 nstat_control_begin_query(
4803 nstat_control_state *state,
4804 const nstat_msg_hdr *hdrp)
4805 {
4806 boolean_t partial = FALSE;
4807
4808 if (hdrp->flags & NSTAT_MSG_HDR_FLAG_CONTINUATION)
4809 {
4810 /* A partial query all has been requested. */
4811 partial = TRUE;
4812
4813 if (state->ncs_context != hdrp->context)
4814 {
4815 if (state->ncs_context != 0)
4816 nstat_send_error(state, state->ncs_context, EAGAIN);
4817
4818 /* Initialize state for a partial query all. */
4819 state->ncs_context = hdrp->context;
4820 state->ncs_seq++;
4821 }
4822 }
4823
4824 return partial;
4825 }
4826
4827 static u_int16_t
4828 nstat_control_end_query(
4829 nstat_control_state *state,
4830 nstat_src *last_src,
4831 boolean_t partial)
4832 {
4833 u_int16_t flags = 0;
4834
4835 if (last_src == NULL || !partial)
4836 {
4837 /*
4838 * We iterated through the entire srcs list or exited early
4839 * from the loop when a partial update was not requested (an
4840 * error occurred), so clear context to indicate internally
4841 * that the query is finished.
4842 */
4843 state->ncs_context = 0;
4844 }
4845 else
4846 {
4847 /*
4848 * Indicate to userlevel to make another partial request as
4849 * there are still sources left to be reported.
4850 */
4851 flags |= NSTAT_MSG_HDR_FLAG_CONTINUATION;
4852 }
4853
4854 return flags;
4855 }
4856
4857 static errno_t
4858 nstat_control_handle_get_update(
4859 nstat_control_state *state,
4860 mbuf_t m)
4861 {
4862 nstat_msg_query_src_req req;
4863
4864 if (mbuf_copydata(m, 0, sizeof(req), &req) != 0)
4865 {
4866 return EINVAL;
4867 }
4868
4869 lck_mtx_lock(&state->ncs_mtx);
4870
4871 state->ncs_flags |= NSTAT_FLAG_SUPPORTS_UPDATES;
4872
4873 errno_t result = ENOENT;
4874 nstat_src *src, *tmpsrc;
4875 tailq_head_nstat_src dead_list;
4876 u_int64_t src_count = 0;
4877 boolean_t partial = FALSE;
4878 TAILQ_INIT(&dead_list);
4879
4880 /*
4881 * Error handling policy and sequence number generation is folded into
4882 * nstat_control_begin_query.
4883 */
4884 partial = nstat_control_begin_query(state, &req.hdr);
4885
4886 TAILQ_FOREACH_SAFE(src, &state->ncs_src_queue, ns_control_link, tmpsrc)
4887 {
4888 int gone;
4889
4890 gone = 0;
4891 if (nstat_control_reporting_allowed(state, src))
4892 {
4893 /* skip this source if it has the current state
4894 * sequence number as it's already been reported in
4895 * this query-all partial sequence. */
4896 if (req.srcref == NSTAT_SRC_REF_ALL
4897 && (FALSE == partial || src->seq != state->ncs_seq))
4898 {
4899 result = nstat_control_append_update(state, src, &gone);
4900 if (ENOMEM == result || ENOBUFS == result)
4901 {
4902 /*
4903 * If the update message failed to
4904 * enqueue then give up.
4905 */
4906 break;
4907 }
4908 if (partial)
4909 {
4910 /*
4911 * We skip over hard errors and
4912 * filtered sources.
4913 */
4914 src->seq = state->ncs_seq;
4915 src_count++;
4916 }
4917 }
4918 else if (src->srcref == req.srcref)
4919 {
4920 result = nstat_control_send_update(state, src, req.hdr.context, 0, &gone);
4921 }
4922 }
4923
4924 if (gone)
4925 {
4926 // pull src out of the list
4927 TAILQ_REMOVE(&state->ncs_src_queue, src, ns_control_link);
4928 TAILQ_INSERT_TAIL(&dead_list, src, ns_control_link);
4929 }
4930
4931 if (req.srcref != NSTAT_SRC_REF_ALL && req.srcref == src->srcref)
4932 {
4933 break;
4934 }
4935 if (src_count >= QUERY_CONTINUATION_SRC_COUNT)
4936 {
4937 break;
4938 }
4939 }
4940
4941 nstat_flush_accumulated_msgs(state);
4942
4943
4944 u_int16_t flags = 0;
4945 if (req.srcref == NSTAT_SRC_REF_ALL)
4946 flags = nstat_control_end_query(state, src, partial);
4947
4948 lck_mtx_unlock(&state->ncs_mtx);
4949 /*
4950 * If an error occurred enqueueing data, then allow the error to
4951 * propagate to nstat_control_send. This way, the error is sent to
4952 * user-level.
4953 */
4954 if (req.srcref == NSTAT_SRC_REF_ALL && ENOMEM != result && ENOBUFS != result)
4955 {
4956 nstat_enqueue_success(req.hdr.context, state, flags);
4957 result = 0;
4958 }
4959
4960 while ((src = TAILQ_FIRST(&dead_list)))
4961 {
4962 TAILQ_REMOVE(&dead_list, src, ns_control_link);
4963 // release src and send notification
4964 nstat_control_cleanup_source(state, src, FALSE);
4965 }
4966
4967 return result;
4968 }
4969
4970 static errno_t
4971 nstat_control_handle_subscribe_sysinfo(
4972 nstat_control_state *state)
4973 {
4974 errno_t result = priv_check_cred(kauth_cred_get(), PRIV_NET_PRIVILEGED_NETWORK_STATISTICS, 0);
4975
4976 if (result != 0)
4977 {
4978 return result;
4979 }
4980
4981 lck_mtx_lock(&state->ncs_mtx);
4982 state->ncs_flags |= NSTAT_FLAG_SYSINFO_SUBSCRIBED;
4983 lck_mtx_unlock(&state->ncs_mtx);
4984
4985 return 0;
4986 }
4987
4988 static errno_t
4989 nstat_control_send(
4990 kern_ctl_ref kctl,
4991 u_int32_t unit,
4992 void *uinfo,
4993 mbuf_t m,
4994 __unused int flags)
4995 {
4996 nstat_control_state *state = (nstat_control_state*)uinfo;
4997 struct nstat_msg_hdr *hdr;
4998 struct nstat_msg_hdr storage;
4999 errno_t result = 0;
5000
5001 if (mbuf_pkthdr_len(m) < sizeof(*hdr))
5002 {
5003 // Is this the right thing to do?
5004 mbuf_freem(m);
5005 return EINVAL;
5006 }
5007
5008 if (mbuf_len(m) >= sizeof(*hdr))
5009 {
5010 hdr = mbuf_data(m);
5011 }
5012 else
5013 {
5014 mbuf_copydata(m, 0, sizeof(storage), &storage);
5015 hdr = &storage;
5016 }
5017
5018 // Legacy clients may not set the length
5019 // Those clients are likely not setting the flags either
5020 // Fix everything up so old clients continue to work
5021 if (hdr->length != mbuf_pkthdr_len(m))
5022 {
5023 hdr->flags = 0;
5024 hdr->length = mbuf_pkthdr_len(m);
5025 if (hdr == &storage)
5026 {
5027 mbuf_copyback(m, 0, sizeof(*hdr), hdr, MBUF_DONTWAIT);
5028 }
5029 }
5030
5031 switch (hdr->type)
5032 {
5033 case NSTAT_MSG_TYPE_ADD_SRC:
5034 result = nstat_control_handle_add_request(state, m);
5035 break;
5036
5037 case NSTAT_MSG_TYPE_ADD_ALL_SRCS:
5038 result = nstat_control_handle_add_all(state, m);
5039 break;
5040
5041 case NSTAT_MSG_TYPE_REM_SRC:
5042 result = nstat_control_handle_remove_request(state, m);
5043 break;
5044
5045 case NSTAT_MSG_TYPE_QUERY_SRC:
5046 result = nstat_control_handle_query_request(state, m);
5047 break;
5048
5049 case NSTAT_MSG_TYPE_GET_SRC_DESC:
5050 result = nstat_control_handle_get_src_description(state, m);
5051 break;
5052
5053 case NSTAT_MSG_TYPE_SET_FILTER:
5054 result = nstat_control_handle_set_filter(state, m);
5055 break;
5056
5057 case NSTAT_MSG_TYPE_GET_UPDATE:
5058 result = nstat_control_handle_get_update(state, m);
5059 break;
5060
5061 case NSTAT_MSG_TYPE_SUBSCRIBE_SYSINFO:
5062 result = nstat_control_handle_subscribe_sysinfo(state);
5063 break;
5064
5065 default:
5066 result = EINVAL;
5067 break;
5068 }
5069
5070 if (result != 0)
5071 {
5072 struct nstat_msg_error err;
5073
5074 bzero(&err, sizeof(err));
5075 err.hdr.type = NSTAT_MSG_TYPE_ERROR;
5076 err.hdr.length = sizeof(err) + mbuf_pkthdr_len(m);
5077 err.hdr.context = hdr->context;
5078 err.error = result;
5079
5080 if (mbuf_prepend(&m, sizeof(err), MBUF_DONTWAIT) == 0 &&
5081 mbuf_copyback(m, 0, sizeof(err), &err, MBUF_DONTWAIT) == 0)
5082 {
5083 result = ctl_enqueuembuf(kctl, unit, m, CTL_DATA_EOR | CTL_DATA_CRIT);
5084 if (result != 0)
5085 {
5086 mbuf_freem(m);
5087 }
5088 m = NULL;
5089 }
5090
5091 if (result != 0)
5092 {
5093 // Unable to prepend the error to the request - just send the error
5094 err.hdr.length = sizeof(err);
5095 result = ctl_enqueuedata(kctl, unit, &err, sizeof(err),
5096 CTL_DATA_EOR | CTL_DATA_CRIT);
5097 if (result != 0)
5098 nstat_stats.nstat_msgerrorfailures += 1;
5099 }
5100 nstat_stats.nstat_handle_msg_failures += 1;
5101 }
5102
5103 if (m) mbuf_freem(m);
5104
5105 return result;
5106 }
5107
5108
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