1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
24 * Copyright (c) 2011, Joyent Inc. All rights reserved.
25 */
26
27 #include <sys/types.h>
28 #include <sys/tihdr.h>
29 #include <sys/policy.h>
30 #include <sys/tsol/tnet.h>
31 #include <sys/kstat.h>
32
33 #include <inet/common.h>
34 #include <inet/ip.h>
35 #include <inet/tcp.h>
36 #include <inet/tcp_impl.h>
37 #include <inet/tcp_stats.h>
38 #include <inet/kstatcom.h>
39 #include <inet/snmpcom.h>
40
41 static int tcp_kstat_update(kstat_t *, int);
42 static int tcp_kstat2_update(kstat_t *, int);
43 static void tcp_sum_mib(tcp_stack_t *, mib2_tcp_t *);
44
45 static void tcp_add_mib(mib2_tcp_t *, mib2_tcp_t *);
46 static void tcp_add_stats(tcp_stat_counter_t *, tcp_stat_t *);
47 static void tcp_clr_stats(tcp_stat_t *);
48
49 tcp_g_stat_t tcp_g_statistics;
50 kstat_t *tcp_g_kstat;
51
52 /* Translate TCP state to MIB2 TCP state. */
53 static int
54 tcp_snmp_state(tcp_t *tcp)
55 {
56 if (tcp == NULL)
57 return (0);
58
59 switch (tcp->tcp_state) {
60 case TCPS_CLOSED:
61 case TCPS_IDLE: /* RFC1213 doesn't have analogue for IDLE & BOUND */
62 case TCPS_BOUND:
63 return (MIB2_TCP_closed);
64 case TCPS_LISTEN:
65 return (MIB2_TCP_listen);
66 case TCPS_SYN_SENT:
67 return (MIB2_TCP_synSent);
68 case TCPS_SYN_RCVD:
69 return (MIB2_TCP_synReceived);
70 case TCPS_ESTABLISHED:
71 return (MIB2_TCP_established);
72 case TCPS_CLOSE_WAIT:
73 return (MIB2_TCP_closeWait);
74 case TCPS_FIN_WAIT_1:
75 return (MIB2_TCP_finWait1);
76 case TCPS_CLOSING:
77 return (MIB2_TCP_closing);
78 case TCPS_LAST_ACK:
79 return (MIB2_TCP_lastAck);
80 case TCPS_FIN_WAIT_2:
81 return (MIB2_TCP_finWait2);
82 case TCPS_TIME_WAIT:
83 return (MIB2_TCP_timeWait);
84 default:
85 return (0);
86 }
87 }
88
89 /*
90 * Return SNMP stuff in buffer in mpdata.
91 */
92 mblk_t *
93 tcp_snmp_get(queue_t *q, mblk_t *mpctl, boolean_t legacy_req)
94 {
95 mblk_t *mpdata;
96 mblk_t *mp_conn_ctl = NULL;
97 mblk_t *mp_conn_tail;
98 mblk_t *mp_attr_ctl = NULL;
99 mblk_t *mp_attr_tail;
100 mblk_t *mp6_conn_ctl = NULL;
101 mblk_t *mp6_conn_tail;
102 mblk_t *mp6_attr_ctl = NULL;
103 mblk_t *mp6_attr_tail;
104 struct opthdr *optp;
105 mib2_tcpConnEntry_t tce;
106 mib2_tcp6ConnEntry_t tce6;
107 mib2_transportMLPEntry_t mlp;
108 connf_t *connfp;
109 int i;
110 boolean_t ispriv;
111 zoneid_t zoneid;
112 int v4_conn_idx;
113 int v6_conn_idx;
114 conn_t *connp = Q_TO_CONN(q);
115 tcp_stack_t *tcps;
116 ip_stack_t *ipst;
117 mblk_t *mp2ctl;
118 mib2_tcp_t tcp_mib;
119 size_t tcp_mib_size, tce_size, tce6_size;
120
121 /*
122 * make a copy of the original message
123 */
124 mp2ctl = copymsg(mpctl);
125
126 if (mpctl == NULL ||
127 (mpdata = mpctl->b_cont) == NULL ||
128 (mp_conn_ctl = copymsg(mpctl)) == NULL ||
129 (mp_attr_ctl = copymsg(mpctl)) == NULL ||
130 (mp6_conn_ctl = copymsg(mpctl)) == NULL ||
131 (mp6_attr_ctl = copymsg(mpctl)) == NULL) {
132 freemsg(mp_conn_ctl);
133 freemsg(mp_attr_ctl);
134 freemsg(mp6_conn_ctl);
135 freemsg(mp6_attr_ctl);
136 freemsg(mpctl);
137 freemsg(mp2ctl);
138 return (NULL);
139 }
140
141 ipst = connp->conn_netstack->netstack_ip;
142 tcps = connp->conn_netstack->netstack_tcp;
143
144 if (legacy_req) {
145 tcp_mib_size = LEGACY_MIB_SIZE(&tcp_mib, mib2_tcp_t);
146 tce_size = LEGACY_MIB_SIZE(&tce, mib2_tcpConnEntry_t);
147 tce6_size = LEGACY_MIB_SIZE(&tce6, mib2_tcp6ConnEntry_t);
148 } else {
149 tcp_mib_size = sizeof (mib2_tcp_t);
150 tce_size = sizeof (mib2_tcpConnEntry_t);
151 tce6_size = sizeof (mib2_tcp6ConnEntry_t);
152 }
153
154 bzero(&tcp_mib, sizeof (tcp_mib));
155
156 /* build table of connections -- need count in fixed part */
157 SET_MIB(tcp_mib.tcpRtoAlgorithm, 4); /* vanj */
158 SET_MIB(tcp_mib.tcpRtoMin, tcps->tcps_rexmit_interval_min);
159 SET_MIB(tcp_mib.tcpRtoMax, tcps->tcps_rexmit_interval_max);
160 SET_MIB(tcp_mib.tcpMaxConn, -1);
161 SET_MIB(tcp_mib.tcpCurrEstab, 0);
162
163 ispriv =
164 secpolicy_ip_config((Q_TO_CONN(q))->conn_cred, B_TRUE) == 0;
165 zoneid = Q_TO_CONN(q)->conn_zoneid;
166
167 v4_conn_idx = v6_conn_idx = 0;
168 mp_conn_tail = mp_attr_tail = mp6_conn_tail = mp6_attr_tail = NULL;
169
170 for (i = 0; i < CONN_G_HASH_SIZE; i++) {
171 ipst = tcps->tcps_netstack->netstack_ip;
172
173 connfp = &ipst->ips_ipcl_globalhash_fanout[i];
174
175 connp = NULL;
176
177 while ((connp =
178 ipcl_get_next_conn(connfp, connp, IPCL_TCPCONN)) != NULL) {
179 tcp_t *tcp;
180 boolean_t needattr;
181
182 if (connp->conn_zoneid != zoneid)
183 continue; /* not in this zone */
184
185 tcp = connp->conn_tcp;
186 TCPS_UPDATE_MIB(tcps, tcpHCInSegs, tcp->tcp_ibsegs);
187 tcp->tcp_ibsegs = 0;
188 TCPS_UPDATE_MIB(tcps, tcpHCOutSegs, tcp->tcp_obsegs);
189 tcp->tcp_obsegs = 0;
190
191 tce6.tcp6ConnState = tce.tcpConnState =
192 tcp_snmp_state(tcp);
193 if (tce.tcpConnState == MIB2_TCP_established ||
194 tce.tcpConnState == MIB2_TCP_closeWait)
195 BUMP_MIB(&tcp_mib, tcpCurrEstab);
196
197 needattr = B_FALSE;
198 bzero(&mlp, sizeof (mlp));
199 if (connp->conn_mlp_type != mlptSingle) {
200 if (connp->conn_mlp_type == mlptShared ||
201 connp->conn_mlp_type == mlptBoth)
202 mlp.tme_flags |= MIB2_TMEF_SHARED;
203 if (connp->conn_mlp_type == mlptPrivate ||
204 connp->conn_mlp_type == mlptBoth)
205 mlp.tme_flags |= MIB2_TMEF_PRIVATE;
206 needattr = B_TRUE;
207 }
208 if (connp->conn_anon_mlp) {
209 mlp.tme_flags |= MIB2_TMEF_ANONMLP;
210 needattr = B_TRUE;
211 }
212 switch (connp->conn_mac_mode) {
213 case CONN_MAC_DEFAULT:
214 break;
215 case CONN_MAC_AWARE:
216 mlp.tme_flags |= MIB2_TMEF_MACEXEMPT;
217 needattr = B_TRUE;
218 break;
219 case CONN_MAC_IMPLICIT:
220 mlp.tme_flags |= MIB2_TMEF_MACIMPLICIT;
221 needattr = B_TRUE;
222 break;
223 }
224 if (connp->conn_ixa->ixa_tsl != NULL) {
225 ts_label_t *tsl;
226
227 tsl = connp->conn_ixa->ixa_tsl;
228 mlp.tme_flags |= MIB2_TMEF_IS_LABELED;
229 mlp.tme_doi = label2doi(tsl);
230 mlp.tme_label = *label2bslabel(tsl);
231 needattr = B_TRUE;
232 }
233
234 /* Create a message to report on IPv6 entries */
235 if (connp->conn_ipversion == IPV6_VERSION) {
236 tce6.tcp6ConnLocalAddress = connp->conn_laddr_v6;
237 tce6.tcp6ConnRemAddress = connp->conn_faddr_v6;
238 tce6.tcp6ConnLocalPort = ntohs(connp->conn_lport);
239 tce6.tcp6ConnRemPort = ntohs(connp->conn_fport);
240 if (connp->conn_ixa->ixa_flags & IXAF_SCOPEID_SET) {
241 tce6.tcp6ConnIfIndex =
242 connp->conn_ixa->ixa_scopeid;
243 } else {
244 tce6.tcp6ConnIfIndex = connp->conn_bound_if;
245 }
246 /* Don't want just anybody seeing these... */
247 if (ispriv) {
248 tce6.tcp6ConnEntryInfo.ce_snxt =
249 tcp->tcp_snxt;
250 tce6.tcp6ConnEntryInfo.ce_suna =
251 tcp->tcp_suna;
252 tce6.tcp6ConnEntryInfo.ce_rnxt =
253 tcp->tcp_rnxt;
254 tce6.tcp6ConnEntryInfo.ce_rack =
255 tcp->tcp_rack;
256 } else {
257 /*
258 * Netstat, unfortunately, uses this to
259 * get send/receive queue sizes. How to fix?
260 * Why not compute the difference only?
261 */
262 tce6.tcp6ConnEntryInfo.ce_snxt =
263 tcp->tcp_snxt - tcp->tcp_suna;
264 tce6.tcp6ConnEntryInfo.ce_suna = 0;
265 tce6.tcp6ConnEntryInfo.ce_rnxt =
266 tcp->tcp_rnxt - tcp->tcp_rack;
267 tce6.tcp6ConnEntryInfo.ce_rack = 0;
268 }
269
270 tce6.tcp6ConnEntryInfo.ce_swnd = tcp->tcp_swnd;
271 tce6.tcp6ConnEntryInfo.ce_rwnd = tcp->tcp_rwnd;
272 tce6.tcp6ConnEntryInfo.ce_rto = tcp->tcp_rto;
273 tce6.tcp6ConnEntryInfo.ce_mss = tcp->tcp_mss;
274 tce6.tcp6ConnEntryInfo.ce_state = tcp->tcp_state;
275
276 tce6.tcp6ConnCreationProcess =
277 (connp->conn_cpid < 0) ? MIB2_UNKNOWN_PROCESS :
278 connp->conn_cpid;
279 tce6.tcp6ConnCreationTime = connp->conn_open_time;
280
281 (void) snmp_append_data2(mp6_conn_ctl->b_cont,
282 &mp6_conn_tail, (char *)&tce6, tce6_size);
283
284 mlp.tme_connidx = v6_conn_idx++;
285 if (needattr)
286 (void) snmp_append_data2(mp6_attr_ctl->b_cont,
287 &mp6_attr_tail, (char *)&mlp, sizeof (mlp));
288 }
289 /*
290 * Create an IPv4 table entry for IPv4 entries and also
291 * for IPv6 entries which are bound to in6addr_any
292 * but don't have IPV6_V6ONLY set.
293 * (i.e. anything an IPv4 peer could connect to)
294 */
295 if (connp->conn_ipversion == IPV4_VERSION ||
296 (tcp->tcp_state <= TCPS_LISTEN &&
297 !connp->conn_ipv6_v6only &&
298 IN6_IS_ADDR_UNSPECIFIED(&connp->conn_laddr_v6))) {
299 if (connp->conn_ipversion == IPV6_VERSION) {
300 tce.tcpConnRemAddress = INADDR_ANY;
301 tce.tcpConnLocalAddress = INADDR_ANY;
302 } else {
303 tce.tcpConnRemAddress =
304 connp->conn_faddr_v4;
305 tce.tcpConnLocalAddress =
306 connp->conn_laddr_v4;
307 }
308 tce.tcpConnLocalPort = ntohs(connp->conn_lport);
309 tce.tcpConnRemPort = ntohs(connp->conn_fport);
310 /* Don't want just anybody seeing these... */
311 if (ispriv) {
312 tce.tcpConnEntryInfo.ce_snxt =
313 tcp->tcp_snxt;
314 tce.tcpConnEntryInfo.ce_suna =
315 tcp->tcp_suna;
316 tce.tcpConnEntryInfo.ce_rnxt =
317 tcp->tcp_rnxt;
318 tce.tcpConnEntryInfo.ce_rack =
319 tcp->tcp_rack;
320 } else {
321 /*
322 * Netstat, unfortunately, uses this to
323 * get send/receive queue sizes. How
324 * to fix?
325 * Why not compute the difference only?
326 */
327 tce.tcpConnEntryInfo.ce_snxt =
328 tcp->tcp_snxt - tcp->tcp_suna;
329 tce.tcpConnEntryInfo.ce_suna = 0;
330 tce.tcpConnEntryInfo.ce_rnxt =
331 tcp->tcp_rnxt - tcp->tcp_rack;
332 tce.tcpConnEntryInfo.ce_rack = 0;
333 }
334
335 tce.tcpConnEntryInfo.ce_swnd = tcp->tcp_swnd;
336 tce.tcpConnEntryInfo.ce_rwnd = tcp->tcp_rwnd;
337 tce.tcpConnEntryInfo.ce_rto = tcp->tcp_rto;
338 tce.tcpConnEntryInfo.ce_mss = tcp->tcp_mss;
339 tce.tcpConnEntryInfo.ce_state =
340 tcp->tcp_state;
341
342 tce.tcpConnCreationProcess =
343 (connp->conn_cpid < 0) ?
344 MIB2_UNKNOWN_PROCESS :
345 connp->conn_cpid;
346 tce.tcpConnCreationTime = connp->conn_open_time;
347
348 (void) snmp_append_data2(mp_conn_ctl->b_cont,
349 &mp_conn_tail, (char *)&tce, tce_size);
350
351 mlp.tme_connidx = v4_conn_idx++;
352 if (needattr)
353 (void) snmp_append_data2(
354 mp_attr_ctl->b_cont,
355 &mp_attr_tail, (char *)&mlp,
356 sizeof (mlp));
357 }
358 }
359 }
360
361 tcp_sum_mib(tcps, &tcp_mib);
362
363 /* Fixed length structure for IPv4 and IPv6 counters */
364 SET_MIB(tcp_mib.tcpConnTableSize, tce_size);
365 SET_MIB(tcp_mib.tcp6ConnTableSize, tce6_size);
366
367 /*
368 * Synchronize 32- and 64-bit counters. Note that tcpInSegs and
369 * tcpOutSegs are not updated anywhere in TCP. The new 64 bits
370 * counters are used. Hence the old counters' values in tcp_sc_mib
371 * are always 0.
372 */
373 SYNC32_MIB(&tcp_mib, tcpInSegs, tcpHCInSegs);
374 SYNC32_MIB(&tcp_mib, tcpOutSegs, tcpHCOutSegs);
375
376 optp = (struct opthdr *)&mpctl->b_rptr[sizeof (struct T_optmgmt_ack)];
377 optp->level = MIB2_TCP;
378 optp->name = 0;
379 (void) snmp_append_data(mpdata, (char *)&tcp_mib, tcp_mib_size);
380 optp->len = msgdsize(mpdata);
381 qreply(q, mpctl);
382
383 /* table of connections... */
384 optp = (struct opthdr *)&mp_conn_ctl->b_rptr[
385 sizeof (struct T_optmgmt_ack)];
386 optp->level = MIB2_TCP;
387 optp->name = MIB2_TCP_CONN;
388 optp->len = msgdsize(mp_conn_ctl->b_cont);
389 qreply(q, mp_conn_ctl);
390
391 /* table of MLP attributes... */
392 optp = (struct opthdr *)&mp_attr_ctl->b_rptr[
393 sizeof (struct T_optmgmt_ack)];
394 optp->level = MIB2_TCP;
395 optp->name = EXPER_XPORT_MLP;
396 optp->len = msgdsize(mp_attr_ctl->b_cont);
397 if (optp->len == 0)
398 freemsg(mp_attr_ctl);
399 else
400 qreply(q, mp_attr_ctl);
401
402 /* table of IPv6 connections... */
403 optp = (struct opthdr *)&mp6_conn_ctl->b_rptr[
404 sizeof (struct T_optmgmt_ack)];
405 optp->level = MIB2_TCP6;
406 optp->name = MIB2_TCP6_CONN;
407 optp->len = msgdsize(mp6_conn_ctl->b_cont);
408 qreply(q, mp6_conn_ctl);
409
410 /* table of IPv6 MLP attributes... */
411 optp = (struct opthdr *)&mp6_attr_ctl->b_rptr[
412 sizeof (struct T_optmgmt_ack)];
413 optp->level = MIB2_TCP6;
414 optp->name = EXPER_XPORT_MLP;
415 optp->len = msgdsize(mp6_attr_ctl->b_cont);
416 if (optp->len == 0)
417 freemsg(mp6_attr_ctl);
418 else
419 qreply(q, mp6_attr_ctl);
420 return (mp2ctl);
421 }
422
423 /* Return 0 if invalid set request, 1 otherwise, including non-tcp requests */
424 /* ARGSUSED */
425 int
426 tcp_snmp_set(queue_t *q, int level, int name, uchar_t *ptr, int len)
427 {
428 mib2_tcpConnEntry_t *tce = (mib2_tcpConnEntry_t *)ptr;
429
430 switch (level) {
431 case MIB2_TCP:
432 switch (name) {
433 case 13:
434 if (tce->tcpConnState != MIB2_TCP_deleteTCB)
435 return (0);
436 /* TODO: delete entry defined by tce */
437 return (1);
438 default:
439 return (0);
440 }
441 default:
442 return (1);
443 }
444 }
445
446 /*
447 * TCP Kstats implementation
448 */
449 void *
450 tcp_kstat_init(netstackid_t stackid)
451 {
452 kstat_t *ksp;
453
454 tcp_named_kstat_t template = {
455 { "rtoAlgorithm", KSTAT_DATA_INT32, 0 },
456 { "rtoMin", KSTAT_DATA_INT32, 0 },
457 { "rtoMax", KSTAT_DATA_INT32, 0 },
458 { "maxConn", KSTAT_DATA_INT32, 0 },
459 { "activeOpens", KSTAT_DATA_UINT32, 0 },
460 { "passiveOpens", KSTAT_DATA_UINT32, 0 },
461 { "attemptFails", KSTAT_DATA_UINT32, 0 },
462 { "estabResets", KSTAT_DATA_UINT32, 0 },
463 { "currEstab", KSTAT_DATA_UINT32, 0 },
464 { "inSegs", KSTAT_DATA_UINT64, 0 },
465 { "outSegs", KSTAT_DATA_UINT64, 0 },
466 { "retransSegs", KSTAT_DATA_UINT32, 0 },
467 { "connTableSize", KSTAT_DATA_INT32, 0 },
468 { "outRsts", KSTAT_DATA_UINT32, 0 },
469 { "outDataSegs", KSTAT_DATA_UINT32, 0 },
470 { "outDataBytes", KSTAT_DATA_UINT32, 0 },
471 { "retransBytes", KSTAT_DATA_UINT32, 0 },
472 { "outAck", KSTAT_DATA_UINT32, 0 },
473 { "outAckDelayed", KSTAT_DATA_UINT32, 0 },
474 { "outUrg", KSTAT_DATA_UINT32, 0 },
475 { "outWinUpdate", KSTAT_DATA_UINT32, 0 },
476 { "outWinProbe", KSTAT_DATA_UINT32, 0 },
477 { "outControl", KSTAT_DATA_UINT32, 0 },
478 { "outFastRetrans", KSTAT_DATA_UINT32, 0 },
479 { "inAckSegs", KSTAT_DATA_UINT32, 0 },
480 { "inAckBytes", KSTAT_DATA_UINT32, 0 },
481 { "inDupAck", KSTAT_DATA_UINT32, 0 },
482 { "inAckUnsent", KSTAT_DATA_UINT32, 0 },
483 { "inDataInorderSegs", KSTAT_DATA_UINT32, 0 },
484 { "inDataInorderBytes", KSTAT_DATA_UINT32, 0 },
485 { "inDataUnorderSegs", KSTAT_DATA_UINT32, 0 },
486 { "inDataUnorderBytes", KSTAT_DATA_UINT32, 0 },
487 { "inDataDupSegs", KSTAT_DATA_UINT32, 0 },
488 { "inDataDupBytes", KSTAT_DATA_UINT32, 0 },
489 { "inDataPartDupSegs", KSTAT_DATA_UINT32, 0 },
490 { "inDataPartDupBytes", KSTAT_DATA_UINT32, 0 },
491 { "inDataPastWinSegs", KSTAT_DATA_UINT32, 0 },
492 { "inDataPastWinBytes", KSTAT_DATA_UINT32, 0 },
493 { "inWinProbe", KSTAT_DATA_UINT32, 0 },
494 { "inWinUpdate", KSTAT_DATA_UINT32, 0 },
495 { "inClosed", KSTAT_DATA_UINT32, 0 },
496 { "rttUpdate", KSTAT_DATA_UINT32, 0 },
497 { "rttNoUpdate", KSTAT_DATA_UINT32, 0 },
498 { "timRetrans", KSTAT_DATA_UINT32, 0 },
499 { "timRetransDrop", KSTAT_DATA_UINT32, 0 },
500 { "timKeepalive", KSTAT_DATA_UINT32, 0 },
501 { "timKeepaliveProbe", KSTAT_DATA_UINT32, 0 },
502 { "timKeepaliveDrop", KSTAT_DATA_UINT32, 0 },
503 { "listenDrop", KSTAT_DATA_UINT32, 0 },
504 { "listenDropQ0", KSTAT_DATA_UINT32, 0 },
505 { "halfOpenDrop", KSTAT_DATA_UINT32, 0 },
506 { "outSackRetransSegs", KSTAT_DATA_UINT32, 0 },
507 { "connTableSize6", KSTAT_DATA_INT32, 0 }
508 };
509
510 ksp = kstat_create_netstack(TCP_MOD_NAME, stackid, TCP_MOD_NAME, "mib2",
511 KSTAT_TYPE_NAMED, NUM_OF_FIELDS(tcp_named_kstat_t), 0, stackid);
512
513 if (ksp == NULL)
514 return (NULL);
515
516 template.rtoAlgorithm.value.ui32 = 4;
517 template.maxConn.value.i32 = -1;
518
519 bcopy(&template, ksp->ks_data, sizeof (template));
520 ksp->ks_update = tcp_kstat_update;
521 ksp->ks_private = (void *)(uintptr_t)stackid;
522
523 /*
524 * If this is an exclusive netstack for a local zone, the global zone
525 * should still be able to read the kstat.
526 */
527 if (stackid != GLOBAL_NETSTACKID)
528 kstat_zone_add(ksp, GLOBAL_ZONEID);
529
530 kstat_install(ksp);
531 return (ksp);
532 }
533
534 void
535 tcp_kstat_fini(netstackid_t stackid, kstat_t *ksp)
536 {
537 if (ksp != NULL) {
538 ASSERT(stackid == (netstackid_t)(uintptr_t)ksp->ks_private);
539 kstat_delete_netstack(ksp, stackid);
540 }
541 }
542
543 static int
544 tcp_kstat_update(kstat_t *kp, int rw)
545 {
546 tcp_named_kstat_t *tcpkp;
547 tcp_t *tcp;
548 connf_t *connfp;
549 conn_t *connp;
550 int i;
551 netstackid_t stackid = (netstackid_t)(uintptr_t)kp->ks_private;
552 netstack_t *ns;
553 tcp_stack_t *tcps;
554 ip_stack_t *ipst;
555 mib2_tcp_t tcp_mib;
556
557 if (rw == KSTAT_WRITE)
558 return (EACCES);
559
560 ns = netstack_find_by_stackid(stackid);
561 if (ns == NULL)
562 return (-1);
563 tcps = ns->netstack_tcp;
564 if (tcps == NULL) {
565 netstack_rele(ns);
566 return (-1);
567 }
568
569 tcpkp = (tcp_named_kstat_t *)kp->ks_data;
570
571 tcpkp->currEstab.value.ui32 = 0;
572 tcpkp->rtoMin.value.ui32 = tcps->tcps_rexmit_interval_min;
573 tcpkp->rtoMax.value.ui32 = tcps->tcps_rexmit_interval_max;
574
575 ipst = ns->netstack_ip;
576
577 for (i = 0; i < CONN_G_HASH_SIZE; i++) {
578 connfp = &ipst->ips_ipcl_globalhash_fanout[i];
579 connp = NULL;
580 while ((connp =
581 ipcl_get_next_conn(connfp, connp, IPCL_TCPCONN)) != NULL) {
582 tcp = connp->conn_tcp;
583 switch (tcp_snmp_state(tcp)) {
584 case MIB2_TCP_established:
585 case MIB2_TCP_closeWait:
586 tcpkp->currEstab.value.ui32++;
587 break;
588 }
589 }
590 }
591 bzero(&tcp_mib, sizeof (tcp_mib));
592 tcp_sum_mib(tcps, &tcp_mib);
593
594 /* Fixed length structure for IPv4 and IPv6 counters */
595 SET_MIB(tcp_mib.tcpConnTableSize, sizeof (mib2_tcpConnEntry_t));
596 SET_MIB(tcp_mib.tcp6ConnTableSize, sizeof (mib2_tcp6ConnEntry_t));
597
598 tcpkp->activeOpens.value.ui32 = tcp_mib.tcpActiveOpens;
599 tcpkp->passiveOpens.value.ui32 = tcp_mib.tcpPassiveOpens;
600 tcpkp->attemptFails.value.ui32 = tcp_mib.tcpAttemptFails;
601 tcpkp->estabResets.value.ui32 = tcp_mib.tcpEstabResets;
602 tcpkp->inSegs.value.ui64 = tcp_mib.tcpHCInSegs;
603 tcpkp->outSegs.value.ui64 = tcp_mib.tcpHCOutSegs;
604 tcpkp->retransSegs.value.ui32 = tcp_mib.tcpRetransSegs;
605 tcpkp->connTableSize.value.i32 = tcp_mib.tcpConnTableSize;
606 tcpkp->outRsts.value.ui32 = tcp_mib.tcpOutRsts;
607 tcpkp->outDataSegs.value.ui32 = tcp_mib.tcpOutDataSegs;
608 tcpkp->outDataBytes.value.ui32 = tcp_mib.tcpOutDataBytes;
609 tcpkp->retransBytes.value.ui32 = tcp_mib.tcpRetransBytes;
610 tcpkp->outAck.value.ui32 = tcp_mib.tcpOutAck;
611 tcpkp->outAckDelayed.value.ui32 = tcp_mib.tcpOutAckDelayed;
612 tcpkp->outUrg.value.ui32 = tcp_mib.tcpOutUrg;
613 tcpkp->outWinUpdate.value.ui32 = tcp_mib.tcpOutWinUpdate;
614 tcpkp->outWinProbe.value.ui32 = tcp_mib.tcpOutWinProbe;
615 tcpkp->outControl.value.ui32 = tcp_mib.tcpOutControl;
616 tcpkp->outFastRetrans.value.ui32 = tcp_mib.tcpOutFastRetrans;
617 tcpkp->inAckSegs.value.ui32 = tcp_mib.tcpInAckSegs;
618 tcpkp->inAckBytes.value.ui32 = tcp_mib.tcpInAckBytes;
619 tcpkp->inDupAck.value.ui32 = tcp_mib.tcpInDupAck;
620 tcpkp->inAckUnsent.value.ui32 = tcp_mib.tcpInAckUnsent;
621 tcpkp->inDataInorderSegs.value.ui32 = tcp_mib.tcpInDataInorderSegs;
622 tcpkp->inDataInorderBytes.value.ui32 = tcp_mib.tcpInDataInorderBytes;
623 tcpkp->inDataUnorderSegs.value.ui32 = tcp_mib.tcpInDataUnorderSegs;
624 tcpkp->inDataUnorderBytes.value.ui32 = tcp_mib.tcpInDataUnorderBytes;
625 tcpkp->inDataDupSegs.value.ui32 = tcp_mib.tcpInDataDupSegs;
626 tcpkp->inDataDupBytes.value.ui32 = tcp_mib.tcpInDataDupBytes;
627 tcpkp->inDataPartDupSegs.value.ui32 = tcp_mib.tcpInDataPartDupSegs;
628 tcpkp->inDataPartDupBytes.value.ui32 = tcp_mib.tcpInDataPartDupBytes;
629 tcpkp->inDataPastWinSegs.value.ui32 = tcp_mib.tcpInDataPastWinSegs;
630 tcpkp->inDataPastWinBytes.value.ui32 = tcp_mib.tcpInDataPastWinBytes;
631 tcpkp->inWinProbe.value.ui32 = tcp_mib.tcpInWinProbe;
632 tcpkp->inWinUpdate.value.ui32 = tcp_mib.tcpInWinUpdate;
633 tcpkp->inClosed.value.ui32 = tcp_mib.tcpInClosed;
634 tcpkp->rttNoUpdate.value.ui32 = tcp_mib.tcpRttNoUpdate;
635 tcpkp->rttUpdate.value.ui32 = tcp_mib.tcpRttUpdate;
636 tcpkp->timRetrans.value.ui32 = tcp_mib.tcpTimRetrans;
637 tcpkp->timRetransDrop.value.ui32 = tcp_mib.tcpTimRetransDrop;
638 tcpkp->timKeepalive.value.ui32 = tcp_mib.tcpTimKeepalive;
639 tcpkp->timKeepaliveProbe.value.ui32 = tcp_mib.tcpTimKeepaliveProbe;
640 tcpkp->timKeepaliveDrop.value.ui32 = tcp_mib.tcpTimKeepaliveDrop;
641 tcpkp->listenDrop.value.ui32 = tcp_mib.tcpListenDrop;
642 tcpkp->listenDropQ0.value.ui32 = tcp_mib.tcpListenDropQ0;
643 tcpkp->halfOpenDrop.value.ui32 = tcp_mib.tcpHalfOpenDrop;
644 tcpkp->outSackRetransSegs.value.ui32 = tcp_mib.tcpOutSackRetransSegs;
645 tcpkp->connTableSize6.value.i32 = tcp_mib.tcp6ConnTableSize;
646
647 netstack_rele(ns);
648 return (0);
649 }
650
651 /*
652 * kstats related to squeues i.e. not per IP instance
653 */
654 void *
655 tcp_g_kstat_init(tcp_g_stat_t *tcp_g_statp)
656 {
657 kstat_t *ksp;
658
659 tcp_g_stat_t template = {
660 { "tcp_timermp_alloced", KSTAT_DATA_UINT64 },
661 { "tcp_timermp_allocfail", KSTAT_DATA_UINT64 },
662 { "tcp_timermp_allocdblfail", KSTAT_DATA_UINT64 },
663 { "tcp_freelist_cleanup", KSTAT_DATA_UINT64 },
664 };
665
666 ksp = kstat_create(TCP_MOD_NAME, 0, "tcpstat_g", "net",
667 KSTAT_TYPE_NAMED, sizeof (template) / sizeof (kstat_named_t),
668 KSTAT_FLAG_VIRTUAL);
669
670 if (ksp == NULL)
671 return (NULL);
672
673 bcopy(&template, tcp_g_statp, sizeof (template));
674 ksp->ks_data = (void *)tcp_g_statp;
675
676 kstat_install(ksp);
677 return (ksp);
678 }
679
680 void
681 tcp_g_kstat_fini(kstat_t *ksp)
682 {
683 if (ksp != NULL) {
684 kstat_delete(ksp);
685 }
686 }
687
688 void *
689 tcp_kstat2_init(netstackid_t stackid)
690 {
691 kstat_t *ksp;
692
693 tcp_stat_t template = {
694 { "tcp_time_wait_syn_success", KSTAT_DATA_UINT64, 0 },
695 { "tcp_clean_death_nondetached", KSTAT_DATA_UINT64, 0 },
696 { "tcp_eager_blowoff_q", KSTAT_DATA_UINT64, 0 },
697 { "tcp_eager_blowoff_q0", KSTAT_DATA_UINT64, 0 },
698 { "tcp_no_listener", KSTAT_DATA_UINT64, 0 },
699 { "tcp_listendrop", KSTAT_DATA_UINT64, 0 },
700 { "tcp_listendropq0", KSTAT_DATA_UINT64, 0 },
701 { "tcp_wsrv_called", KSTAT_DATA_UINT64, 0 },
702 { "tcp_flwctl_on", KSTAT_DATA_UINT64, 0 },
703 { "tcp_timer_fire_early", KSTAT_DATA_UINT64, 0 },
704 { "tcp_timer_fire_miss", KSTAT_DATA_UINT64, 0 },
705 { "tcp_zcopy_on", KSTAT_DATA_UINT64, 0 },
706 { "tcp_zcopy_off", KSTAT_DATA_UINT64, 0 },
707 { "tcp_zcopy_backoff", KSTAT_DATA_UINT64, 0 },
708 { "tcp_fusion_flowctl", KSTAT_DATA_UINT64, 0 },
709 { "tcp_fusion_backenabled", KSTAT_DATA_UINT64, 0 },
710 { "tcp_fusion_urg", KSTAT_DATA_UINT64, 0 },
711 { "tcp_fusion_putnext", KSTAT_DATA_UINT64, 0 },
712 { "tcp_fusion_unfusable", KSTAT_DATA_UINT64, 0 },
713 { "tcp_fusion_aborted", KSTAT_DATA_UINT64, 0 },
714 { "tcp_fusion_unqualified", KSTAT_DATA_UINT64, 0 },
715 { "tcp_fusion_rrw_busy", KSTAT_DATA_UINT64, 0 },
716 { "tcp_fusion_rrw_msgcnt", KSTAT_DATA_UINT64, 0 },
717 { "tcp_fusion_rrw_plugged", KSTAT_DATA_UINT64, 0 },
718 { "tcp_in_ack_unsent_drop", KSTAT_DATA_UINT64, 0 },
719 { "tcp_sock_fallback", KSTAT_DATA_UINT64, 0 },
720 { "tcp_lso_enabled", KSTAT_DATA_UINT64, 0 },
721 { "tcp_lso_disabled", KSTAT_DATA_UINT64, 0 },
722 { "tcp_lso_times", KSTAT_DATA_UINT64, 0 },
723 { "tcp_lso_pkt_out", KSTAT_DATA_UINT64, 0 },
724 { "tcp_listen_cnt_drop", KSTAT_DATA_UINT64, 0 },
725 { "tcp_listen_mem_drop", KSTAT_DATA_UINT64, 0 },
726 { "tcp_zwin_mem_drop", KSTAT_DATA_UINT64, 0 },
727 { "tcp_zwin_ack_syn", KSTAT_DATA_UINT64, 0 },
728 { "tcp_rst_unsent", KSTAT_DATA_UINT64, 0 },
729 { "tcp_reclaim_cnt", KSTAT_DATA_UINT64, 0 },
730 { "tcp_reass_timeout", KSTAT_DATA_UINT64, 0 },
731 #ifdef TCP_DEBUG_COUNTER
732 { "tcp_time_wait", KSTAT_DATA_UINT64, 0 },
733 { "tcp_rput_time_wait", KSTAT_DATA_UINT64, 0 },
734 { "tcp_detach_time_wait", KSTAT_DATA_UINT64, 0 },
735 { "tcp_timeout_calls", KSTAT_DATA_UINT64, 0 },
736 { "tcp_timeout_cached_alloc", KSTAT_DATA_UINT64, 0 },
737 { "tcp_timeout_cancel_reqs", KSTAT_DATA_UINT64, 0 },
738 { "tcp_timeout_canceled", KSTAT_DATA_UINT64, 0 },
739 { "tcp_timermp_freed", KSTAT_DATA_UINT64, 0 },
740 { "tcp_push_timer_cnt", KSTAT_DATA_UINT64, 0 },
741 { "tcp_ack_timer_cnt", KSTAT_DATA_UINT64, 0 },
742 #endif
743 };
744
745 ksp = kstat_create_netstack(TCP_MOD_NAME, stackid, "tcpstat", "net",
746 KSTAT_TYPE_NAMED, sizeof (template) / sizeof (kstat_named_t), 0,
747 stackid);
748
749 if (ksp == NULL)
750 return (NULL);
751
752 bcopy(&template, ksp->ks_data, sizeof (template));
753 ksp->ks_private = (void *)(uintptr_t)stackid;
754 ksp->ks_update = tcp_kstat2_update;
755
756 /*
757 * If this is an exclusive netstack for a local zone, the global zone
758 * should still be able to read the kstat.
759 */
760 if (stackid != GLOBAL_NETSTACKID)
761 kstat_zone_add(ksp, GLOBAL_ZONEID);
762
763 kstat_install(ksp);
764 return (ksp);
765 }
766
767 void
768 tcp_kstat2_fini(netstackid_t stackid, kstat_t *ksp)
769 {
770 if (ksp != NULL) {
771 ASSERT(stackid == (netstackid_t)(uintptr_t)ksp->ks_private);
772 kstat_delete_netstack(ksp, stackid);
773 }
774 }
775
776 /*
777 * Sum up all per CPU tcp_stat_t kstat counters.
778 */
779 static int
780 tcp_kstat2_update(kstat_t *kp, int rw)
781 {
782 netstackid_t stackid = (netstackid_t)(uintptr_t)kp->ks_private;
783 netstack_t *ns;
784 tcp_stack_t *tcps;
785 tcp_stat_t *stats;
786 int i;
787 int cnt;
788
789 if (rw == KSTAT_WRITE)
790 return (EACCES);
791
792 ns = netstack_find_by_stackid(stackid);
793 if (ns == NULL)
794 return (-1);
795 tcps = ns->netstack_tcp;
796 if (tcps == NULL) {
797 netstack_rele(ns);
798 return (-1);
799 }
800
801 stats = (tcp_stat_t *)kp->ks_data;
802 tcp_clr_stats(stats);
803
804 /*
805 * tcps_sc_cnt may change in the middle of the loop. It is better
806 * to get its value first.
807 */
808 cnt = tcps->tcps_sc_cnt;
809 for (i = 0; i < cnt; i++)
810 tcp_add_stats(&tcps->tcps_sc[i]->tcp_sc_stats, stats);
811
812 netstack_rele(ns);
813 return (0);
814 }
815
816 /*
817 * To add stats from one mib2_tcp_t to another. Static fields are not added.
818 * The caller should set them up propertly.
819 */
820 static void
821 tcp_add_mib(mib2_tcp_t *from, mib2_tcp_t *to)
822 {
823 to->tcpActiveOpens += from->tcpActiveOpens;
824 to->tcpPassiveOpens += from->tcpPassiveOpens;
825 to->tcpAttemptFails += from->tcpAttemptFails;
826 to->tcpEstabResets += from->tcpEstabResets;
827 to->tcpInSegs += from->tcpInSegs;
828 to->tcpOutSegs += from->tcpOutSegs;
829 to->tcpRetransSegs += from->tcpRetransSegs;
830 to->tcpOutRsts += from->tcpOutRsts;
831
832 to->tcpOutDataSegs += from->tcpOutDataSegs;
833 to->tcpOutDataBytes += from->tcpOutDataBytes;
834 to->tcpRetransBytes += from->tcpRetransBytes;
835 to->tcpOutAck += from->tcpOutAck;
836 to->tcpOutAckDelayed += from->tcpOutAckDelayed;
837 to->tcpOutUrg += from->tcpOutUrg;
838 to->tcpOutWinUpdate += from->tcpOutWinUpdate;
839 to->tcpOutWinProbe += from->tcpOutWinProbe;
840 to->tcpOutControl += from->tcpOutControl;
841 to->tcpOutFastRetrans += from->tcpOutFastRetrans;
842
843 to->tcpInAckBytes += from->tcpInAckBytes;
844 to->tcpInDupAck += from->tcpInDupAck;
845 to->tcpInAckUnsent += from->tcpInAckUnsent;
846 to->tcpInDataInorderSegs += from->tcpInDataInorderSegs;
847 to->tcpInDataInorderBytes += from->tcpInDataInorderBytes;
848 to->tcpInDataUnorderSegs += from->tcpInDataUnorderSegs;
849 to->tcpInDataUnorderBytes += from->tcpInDataUnorderBytes;
850 to->tcpInDataDupSegs += from->tcpInDataDupSegs;
851 to->tcpInDataDupBytes += from->tcpInDataDupBytes;
852 to->tcpInDataPartDupSegs += from->tcpInDataPartDupSegs;
853 to->tcpInDataPartDupBytes += from->tcpInDataPartDupBytes;
854 to->tcpInDataPastWinSegs += from->tcpInDataPastWinSegs;
855 to->tcpInDataPastWinBytes += from->tcpInDataPastWinBytes;
856 to->tcpInWinProbe += from->tcpInWinProbe;
857 to->tcpInWinUpdate += from->tcpInWinUpdate;
858 to->tcpInClosed += from->tcpInClosed;
859
860 to->tcpRttNoUpdate += from->tcpRttNoUpdate;
861 to->tcpRttUpdate += from->tcpRttUpdate;
862 to->tcpTimRetrans += from->tcpTimRetrans;
863 to->tcpTimRetransDrop += from->tcpTimRetransDrop;
864 to->tcpTimKeepalive += from->tcpTimKeepalive;
865 to->tcpTimKeepaliveProbe += from->tcpTimKeepaliveProbe;
866 to->tcpTimKeepaliveDrop += from->tcpTimKeepaliveDrop;
867 to->tcpListenDrop += from->tcpListenDrop;
868 to->tcpListenDropQ0 += from->tcpListenDropQ0;
869 to->tcpHalfOpenDrop += from->tcpHalfOpenDrop;
870 to->tcpOutSackRetransSegs += from->tcpOutSackRetransSegs;
871 to->tcpHCInSegs += from->tcpHCInSegs;
872 to->tcpHCOutSegs += from->tcpHCOutSegs;
873 }
874
875 /*
876 * To sum up all MIB2 stats for a tcp_stack_t from all per CPU stats. The
877 * caller should initialize the target mib2_tcp_t properly as this function
878 * just adds up all the per CPU stats.
879 */
880 static void
881 tcp_sum_mib(tcp_stack_t *tcps, mib2_tcp_t *tcp_mib)
882 {
883 int i;
884 int cnt;
885
886 /*
887 * tcps_sc_cnt may change in the middle of the loop. It is better
888 * to get its value first.
889 */
890 cnt = tcps->tcps_sc_cnt;
891 for (i = 0; i < cnt; i++)
892 tcp_add_mib(&tcps->tcps_sc[i]->tcp_sc_mib, tcp_mib);
893 }
894
895 /*
896 * To set all tcp_stat_t counters to 0.
897 */
898 static void
899 tcp_clr_stats(tcp_stat_t *stats)
900 {
901 stats->tcp_time_wait_syn_success.value.ui64 = 0;
902 stats->tcp_clean_death_nondetached.value.ui64 = 0;
903 stats->tcp_eager_blowoff_q.value.ui64 = 0;
904 stats->tcp_eager_blowoff_q0.value.ui64 = 0;
905 stats->tcp_no_listener.value.ui64 = 0;
906 stats->tcp_listendrop.value.ui64 = 0;
907 stats->tcp_listendropq0.value.ui64 = 0;
908 stats->tcp_wsrv_called.value.ui64 = 0;
909 stats->tcp_flwctl_on.value.ui64 = 0;
910 stats->tcp_timer_fire_early.value.ui64 = 0;
911 stats->tcp_timer_fire_miss.value.ui64 = 0;
912 stats->tcp_zcopy_on.value.ui64 = 0;
913 stats->tcp_zcopy_off.value.ui64 = 0;
914 stats->tcp_zcopy_backoff.value.ui64 = 0;
915 stats->tcp_fusion_flowctl.value.ui64 = 0;
916 stats->tcp_fusion_backenabled.value.ui64 = 0;
917 stats->tcp_fusion_urg.value.ui64 = 0;
918 stats->tcp_fusion_putnext.value.ui64 = 0;
919 stats->tcp_fusion_unfusable.value.ui64 = 0;
920 stats->tcp_fusion_aborted.value.ui64 = 0;
921 stats->tcp_fusion_unqualified.value.ui64 = 0;
922 stats->tcp_fusion_rrw_busy.value.ui64 = 0;
923 stats->tcp_fusion_rrw_msgcnt.value.ui64 = 0;
924 stats->tcp_fusion_rrw_plugged.value.ui64 = 0;
925 stats->tcp_in_ack_unsent_drop.value.ui64 = 0;
926 stats->tcp_sock_fallback.value.ui64 = 0;
927 stats->tcp_lso_enabled.value.ui64 = 0;
928 stats->tcp_lso_disabled.value.ui64 = 0;
929 stats->tcp_lso_times.value.ui64 = 0;
930 stats->tcp_lso_pkt_out.value.ui64 = 0;
931 stats->tcp_listen_cnt_drop.value.ui64 = 0;
932 stats->tcp_listen_mem_drop.value.ui64 = 0;
933 stats->tcp_zwin_mem_drop.value.ui64 = 0;
934 stats->tcp_zwin_ack_syn.value.ui64 = 0;
935 stats->tcp_rst_unsent.value.ui64 = 0;
936 stats->tcp_reclaim_cnt.value.ui64 = 0;
937 stats->tcp_reass_timeout.value.ui64 = 0;
938
939 #ifdef TCP_DEBUG_COUNTER
940 stats->tcp_time_wait.value.ui64 = 0;
941 stats->tcp_rput_time_wait.value.ui64 = 0;
942 stats->tcp_detach_time_wait.value.ui64 = 0;
943 stats->tcp_timeout_calls.value.ui64 = 0;
944 stats->tcp_timeout_cached_alloc.value.ui64 = 0;
945 stats->tcp_timeout_cancel_reqs.value.ui64 = 0;
946 stats->tcp_timeout_canceled.value.ui64 = 0;
947 stats->tcp_timermp_freed.value.ui64 = 0;
948 stats->tcp_push_timer_cnt.value.ui64 = 0;
949 stats->tcp_ack_timer_cnt.value.ui64 = 0;
950 #endif
951 }
952
953 /*
954 * To add counters from the per CPU tcp_stat_counter_t to the stack
955 * tcp_stat_t.
956 */
957 static void
958 tcp_add_stats(tcp_stat_counter_t *from, tcp_stat_t *to)
959 {
960 to->tcp_time_wait_syn_success.value.ui64 +=
961 from->tcp_time_wait_syn_success;
962 to->tcp_clean_death_nondetached.value.ui64 +=
963 from->tcp_clean_death_nondetached;
964 to->tcp_eager_blowoff_q.value.ui64 +=
965 from->tcp_eager_blowoff_q;
966 to->tcp_eager_blowoff_q0.value.ui64 +=
967 from->tcp_eager_blowoff_q0;
968 to->tcp_no_listener.value.ui64 +=
969 from->tcp_no_listener;
970 to->tcp_listendrop.value.ui64 +=
971 from->tcp_listendrop;
972 to->tcp_listendropq0.value.ui64 +=
973 from->tcp_listendropq0;
974 to->tcp_wsrv_called.value.ui64 +=
975 from->tcp_wsrv_called;
976 to->tcp_flwctl_on.value.ui64 +=
977 from->tcp_flwctl_on;
978 to->tcp_timer_fire_early.value.ui64 +=
979 from->tcp_timer_fire_early;
980 to->tcp_timer_fire_miss.value.ui64 +=
981 from->tcp_timer_fire_miss;
982 to->tcp_zcopy_on.value.ui64 +=
983 from->tcp_zcopy_on;
984 to->tcp_zcopy_off.value.ui64 +=
985 from->tcp_zcopy_off;
986 to->tcp_zcopy_backoff.value.ui64 +=
987 from->tcp_zcopy_backoff;
988 to->tcp_fusion_flowctl.value.ui64 +=
989 from->tcp_fusion_flowctl;
990 to->tcp_fusion_backenabled.value.ui64 +=
991 from->tcp_fusion_backenabled;
992 to->tcp_fusion_urg.value.ui64 +=
993 from->tcp_fusion_urg;
994 to->tcp_fusion_putnext.value.ui64 +=
995 from->tcp_fusion_putnext;
996 to->tcp_fusion_unfusable.value.ui64 +=
997 from->tcp_fusion_unfusable;
998 to->tcp_fusion_aborted.value.ui64 +=
999 from->tcp_fusion_aborted;
1000 to->tcp_fusion_unqualified.value.ui64 +=
1001 from->tcp_fusion_unqualified;
1002 to->tcp_fusion_rrw_busy.value.ui64 +=
1003 from->tcp_fusion_rrw_busy;
1004 to->tcp_fusion_rrw_msgcnt.value.ui64 +=
1005 from->tcp_fusion_rrw_msgcnt;
1006 to->tcp_fusion_rrw_plugged.value.ui64 +=
1007 from->tcp_fusion_rrw_plugged;
1008 to->tcp_in_ack_unsent_drop.value.ui64 +=
1009 from->tcp_in_ack_unsent_drop;
1010 to->tcp_sock_fallback.value.ui64 +=
1011 from->tcp_sock_fallback;
1012 to->tcp_lso_enabled.value.ui64 +=
1013 from->tcp_lso_enabled;
1014 to->tcp_lso_disabled.value.ui64 +=
1015 from->tcp_lso_disabled;
1016 to->tcp_lso_times.value.ui64 +=
1017 from->tcp_lso_times;
1018 to->tcp_lso_pkt_out.value.ui64 +=
1019 from->tcp_lso_pkt_out;
1020 to->tcp_listen_cnt_drop.value.ui64 +=
1021 from->tcp_listen_cnt_drop;
1022 to->tcp_listen_mem_drop.value.ui64 +=
1023 from->tcp_listen_mem_drop;
1024 to->tcp_zwin_mem_drop.value.ui64 +=
1025 from->tcp_zwin_mem_drop;
1026 to->tcp_zwin_ack_syn.value.ui64 +=
1027 from->tcp_zwin_ack_syn;
1028 to->tcp_rst_unsent.value.ui64 +=
1029 from->tcp_rst_unsent;
1030 to->tcp_reclaim_cnt.value.ui64 +=
1031 from->tcp_reclaim_cnt;
1032 to->tcp_reass_timeout.value.ui64 +=
1033 from->tcp_reass_timeout;
1034
1035 #ifdef TCP_DEBUG_COUNTER
1036 to->tcp_time_wait.value.ui64 +=
1037 from->tcp_time_wait;
1038 to->tcp_rput_time_wait.value.ui64 +=
1039 from->tcp_rput_time_wait;
1040 to->tcp_detach_time_wait.value.ui64 +=
1041 from->tcp_detach_time_wait;
1042 to->tcp_timeout_calls.value.ui64 +=
1043 from->tcp_timeout_calls;
1044 to->tcp_timeout_cached_alloc.value.ui64 +=
1045 from->tcp_timeout_cached_alloc;
1046 to->tcp_timeout_cancel_reqs.value.ui64 +=
1047 from->tcp_timeout_cancel_reqs;
1048 to->tcp_timeout_canceled.value.ui64 +=
1049 from->tcp_timeout_canceled;
1050 to->tcp_timermp_freed.value.ui64 +=
1051 from->tcp_timermp_freed;
1052 to->tcp_push_timer_cnt.value.ui64 +=
1053 from->tcp_push_timer_cnt;
1054 to->tcp_ack_timer_cnt.value.ui64 +=
1055 from->tcp_ack_timer_cnt;
1056 #endif
1057 }