xref: /illumos-gate/usr/src/lib/libdladm/common/usage.c (revision c211fc479225fa54805cf480633bf6689ca9a2db)
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 2009 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #include <fcntl.h>
28 #include <stdlib.h>
29 #include <strings.h>
30 #include <exacct.h>
31 #include <libdladm.h>
32 
33 #define	TIMEBUFLEN	20
34 #define	GBIT		1000000000
35 #define	MBIT		1000000
36 #define	KBIT		1000
37 
38 #define	NET_RESET_TOT(tbytes, ttime, tibytes, tobytes, step) {	\
39 	(step) = 1;						\
40 	(tbytes) = 0;						\
41 	(ttime) = 0;						\
42 	(tibytes) = 0;						\
43 	(tobytes) = 0;						\
44 	}
45 
46 /* Flow/Link Descriptor */
47 typedef struct net_desc_s {
48 	char		net_desc_name[LIFNAMSIZ];
49 	char		net_desc_devname[LIFNAMSIZ];
50 	uchar_t		net_desc_ehost[ETHERADDRL];
51 	uchar_t		net_desc_edest[ETHERADDRL];
52 	ushort_t	net_desc_vlan_tpid;
53 	ushort_t	net_desc_vlan_tci;
54 	ushort_t	net_desc_sap;
55 	ushort_t	net_desc_cpuid;
56 	ushort_t	net_desc_priority;
57 	uint64_t	net_desc_bw_limit;
58 	in6_addr_t	net_desc_saddr;
59 	in6_addr_t	net_desc_daddr;
60 	boolean_t	net_desc_isv4;
61 	in_port_t	net_desc_sport;
62 	in_port_t	net_desc_dport;
63 	uint8_t		net_desc_protocol;
64 	uint8_t		net_desc_dsfield;
65 	boolean_t	net_desc_newrec;
66 } net_desc_t;
67 
68 /* Time structure: Year, Month, Day, Hour, Min, Sec */
69 typedef struct net_time_s {
70 	int	net_time_yr;
71 	int	net_time_mon;
72 	int	net_time_day;
73 	int	net_time_hr;
74 	int	net_time_min;
75 	int	net_time_sec;
76 } net_time_t;
77 
78 /* Flow/Link Stats */
79 typedef struct net_stat_s {
80 	char			net_stat_name[LIFNAMSIZ];
81 	uint64_t		net_stat_ibytes;
82 	uint64_t		net_stat_obytes;
83 	uint64_t		net_stat_ipackets;
84 	uint64_t		net_stat_opackets;
85 	uint64_t		net_stat_ierrors;
86 	uint64_t		net_stat_oerrors;
87 	uint64_t		net_stat_tibytes;
88 	uint64_t		net_stat_tobytes;
89 	uint64_t		net_stat_tipackets;
90 	uint64_t		net_stat_topackets;
91 	uint64_t		net_stat_tierrors;
92 	uint64_t		net_stat_toerrors;
93 	uint64_t		net_stat_ctime;
94 	uint64_t		net_stat_tdiff;
95 	net_time_t		net_stat_time;
96 	struct net_stat_s	*net_stat_next;
97 	net_desc_t		*net_stat_desc;
98 	boolean_t		net_stat_isref;
99 } net_stat_t;
100 
101 /* Used to create the [gnu]plot file */
102 typedef struct net_plot_entry_s {
103 	char		*net_pe_name;
104 	uint64_t	net_pe_tottime;
105 	uint64_t	net_pe_totbytes;
106 	uint64_t	net_pe_totibytes;
107 	uint64_t	net_pe_totobytes;
108 	uint64_t	net_pe_lasttime;
109 } net_plot_entry_t;
110 
111 /* Stats entry */
112 typedef struct net_entry_s {
113 	net_desc_t		*net_entry_desc;
114 	net_stat_t		*net_entry_shead;
115 	net_stat_t		*net_entry_stail;
116 	int			net_entry_scount;
117 	net_stat_t		*net_entry_sref;
118 	net_stat_t		*net_entry_tstats;
119 	uint64_t		net_entry_ttime;
120 	struct net_entry_s	*net_entry_next;
121 } net_entry_t;
122 
123 /* Time sorted list */
124 typedef struct net_time_entry_s {
125 	net_stat_t	*my_time_stat;
126 	struct net_time_entry_s *net_time_entry_next;
127 	struct net_time_entry_s *net_time_entry_prev;
128 } net_time_entry_t;
129 
130 /* The parsed table */
131 typedef	struct net_table_s {
132 	/* List of stats */
133 	net_entry_t		*net_table_head;
134 	net_entry_t		*net_table_tail;
135 	int			net_entries;
136 
137 	/*
138 	 * Optimization I : List sorted by time, i.e:
139 	 * Time		Resource	..
140 	 * -------------------------------
141 	 * 11.15.10	bge0
142 	 * 11.15.10	ce0
143 	 * 11.15.10	vnic1
144 	 * 11.15.15	bge0
145 	 * 11.15.15	ce0
146 	 * 11.15.15	vnic1
147 	 */
148 	net_time_entry_t	*net_time_head;
149 	net_time_entry_t	*net_time_tail;
150 
151 	/*
152 	 * Optimization II : List sorted by resources
153 	 * Time		Resource	..
154 	 * -------------------------------
155 	 * 11.15.10	bge0
156 	 * 11.15.15	bge0
157 	 * 11.15.10	ce0
158 	 * 11.15.15	ce0
159 	 * 11.15.10	vnic1
160 	 * 11.15.15	vnic1
161 	 */
162 	net_time_entry_t	*net_ctime_head;
163 	net_time_entry_t	*net_ctime_tail;
164 
165 	/* Common to both the above (sorted) lists. */
166 	int			net_time_entries;
167 } net_table_t;
168 
169 #define	NET_DATE_GREATER	0
170 #define	NET_DATE_LESSER		1
171 #define	NET_DATE_EQUAL		2
172 
173 #define	NET_TIME_GREATER	0
174 #define	NET_TIME_LESSER		1
175 #define	NET_TIME_EQUAL		2
176 
177 #ifndef _LP64
178 #define	FMT_UINT64	"%-15llu"
179 #else
180 #define	FMT_UINT64	"%-15lu"
181 #endif
182 
183 /*
184  * Given a timebuf of the form M/D/Y,H:M:S break it into individual elements.
185  */
186 static void
187 dissect_time(char *tbuf, net_time_t *nt)
188 {
189 	char	*d;
190 	char	*t;
191 	char	*dd;
192 	char	*h;
193 	char	*endp;
194 
195 	if (tbuf == NULL || nt == NULL)
196 		return;
197 
198 	d = strtok(tbuf, ",");	/* Date */
199 	t = strtok(NULL, ",");	/* Time */
200 
201 	/* Month */
202 	dd = strtok(d, "/");
203 	if (dd == NULL)
204 		return;
205 	nt->net_time_mon = strtol(dd, &endp, 10);
206 
207 	/* Day */
208 	dd = strtok(NULL, "/");
209 	if (dd == NULL)
210 		return;
211 	nt->net_time_day = strtol(dd, &endp, 10);
212 
213 	/* Year */
214 	dd = strtok(NULL, "/");
215 	if (dd == NULL)
216 		return;
217 	nt->net_time_yr = strtol(dd, &endp, 10);
218 	if (strlen(dd) <= 2)
219 		nt->net_time_yr += 2000;
220 
221 	if (t == NULL)
222 		return;
223 
224 	/* Hour */
225 	h = strtok(t, ":");
226 	if (h == NULL)
227 		return;
228 	nt->net_time_hr = strtol(h, &endp, 10);
229 
230 	/* Min */
231 	h = strtok(NULL, ":");
232 	if (h == NULL)
233 		return;
234 	nt->net_time_min = strtol(h, &endp, 10);
235 
236 	/* Sec */
237 	h = strtok(NULL, ":");
238 	if (h == NULL)
239 		return;
240 	nt->net_time_sec = strtol(h, &endp, 10);
241 }
242 
243 /* Get a stat item from an object in the exacct file */
244 static void
245 add_stat_item(ea_object_t *o, net_stat_t *ns)
246 {
247 	switch (o->eo_catalog & EXT_TYPE_MASK) {
248 	case EXT_STRING:
249 		if ((o->eo_catalog & EXD_DATA_MASK) == EXD_NET_STATS_NAME) {
250 			(void) strncpy(ns->net_stat_name, o->eo_item.ei_string,
251 			    strlen(o->eo_item.ei_string));
252 		}
253 		break;
254 	case EXT_UINT64:
255 		if ((o->eo_catalog & EXD_DATA_MASK) == EXD_NET_STATS_CURTIME) {
256 			time_t	_time;
257 			char	timebuf[TIMEBUFLEN];
258 
259 			ns->net_stat_ctime = o->eo_item.ei_uint64;
260 			_time = ns->net_stat_ctime;
261 			(void) strftime(timebuf, sizeof (timebuf),
262 			    "%m/%d/%Y,%T\n", localtime(&_time));
263 			dissect_time(timebuf, &ns->net_stat_time);
264 		} else if ((o->eo_catalog & EXD_DATA_MASK) ==
265 		    EXD_NET_STATS_IBYTES) {
266 			ns->net_stat_ibytes = o->eo_item.ei_uint64;
267 		} else if ((o->eo_catalog & EXD_DATA_MASK) ==
268 		    EXD_NET_STATS_OBYTES) {
269 			ns->net_stat_obytes = o->eo_item.ei_uint64;
270 		} else if ((o->eo_catalog & EXD_DATA_MASK) ==
271 		    EXD_NET_STATS_IPKTS) {
272 			ns->net_stat_ipackets = o->eo_item.ei_uint64;
273 		} else if ((o->eo_catalog & EXD_DATA_MASK) ==
274 		    EXD_NET_STATS_OPKTS) {
275 			ns->net_stat_opackets = o->eo_item.ei_uint64;
276 		} else if ((o->eo_catalog & EXD_DATA_MASK) ==
277 		    EXD_NET_STATS_IERRPKTS) {
278 			ns->net_stat_ierrors = o->eo_item.ei_uint64;
279 		} else if ((o->eo_catalog & EXD_DATA_MASK) ==
280 		    EXD_NET_STATS_OERRPKTS) {
281 			ns->net_stat_oerrors = o->eo_item.ei_uint64;
282 		}
283 		break;
284 	default:
285 		break;
286 	}
287 }
288 
289 /* Get a description item from an object in the exacct file */
290 static void
291 add_desc_item(ea_object_t *o, net_desc_t *nd)
292 {
293 	switch (o->eo_catalog & EXT_TYPE_MASK) {
294 	case EXT_STRING:
295 		if ((o->eo_catalog & EXD_DATA_MASK) == EXD_NET_DESC_NAME) {
296 			(void) strncpy(nd->net_desc_name, o->eo_item.ei_string,
297 			    strlen(o->eo_item.ei_string));
298 		} else if ((o->eo_catalog & EXD_DATA_MASK) ==
299 		    EXD_NET_DESC_DEVNAME) {
300 			(void) strncpy(nd->net_desc_devname,
301 			    o->eo_item.ei_string, strlen(o->eo_item.ei_string));
302 		}
303 		break;
304 	case EXT_UINT8:
305 		if ((o->eo_catalog & EXD_DATA_MASK) == EXD_NET_DESC_PROTOCOL) {
306 			nd->net_desc_protocol = o->eo_item.ei_uint8;
307 		} else if ((o->eo_catalog & EXD_DATA_MASK) ==
308 		    EXD_NET_DESC_DSFIELD) {
309 			nd->net_desc_dsfield = o->eo_item.ei_uint8;
310 		}
311 		break;
312 	case EXT_UINT16:
313 		if ((o->eo_catalog & EXD_DATA_MASK) == EXD_NET_DESC_SPORT) {
314 			nd->net_desc_sport = o->eo_item.ei_uint16;
315 		} else if ((o->eo_catalog & EXD_DATA_MASK) ==
316 		    EXD_NET_DESC_DPORT) {
317 			nd->net_desc_dport = o->eo_item.ei_uint16;
318 		} else if ((o->eo_catalog & EXD_DATA_MASK) ==
319 		    EXD_NET_DESC_SAP) {
320 			nd->net_desc_sap = o->eo_item.ei_uint16;
321 		} else if ((o->eo_catalog & EXD_DATA_MASK) ==
322 		    EXD_NET_DESC_VLAN_TPID) {
323 			nd->net_desc_vlan_tpid = o->eo_item.ei_uint16;
324 		} else if ((o->eo_catalog & EXD_DATA_MASK) ==
325 		    EXD_NET_DESC_VLAN_TCI) {
326 			nd->net_desc_vlan_tci = o->eo_item.ei_uint16;
327 		} else if ((o->eo_catalog & EXD_DATA_MASK) ==
328 		    EXD_NET_DESC_PRIORITY) {
329 			nd->net_desc_priority = o->eo_item.ei_uint16;
330 		}
331 		break;
332 	case EXT_UINT32:
333 		if ((o->eo_catalog & EXD_DATA_MASK) == EXD_NET_DESC_V4SADDR ||
334 		    (o->eo_catalog & EXD_DATA_MASK) == EXD_NET_DESC_V4DADDR) {
335 				struct in_addr	addr;
336 
337 				addr.s_addr = htonl(o->eo_item.ei_uint32);
338 
339 				if ((o->eo_catalog & EXD_DATA_MASK) ==
340 				    EXD_NET_DESC_V4SADDR) {
341 					IN6_INADDR_TO_V4MAPPED(&addr,
342 					    &nd->net_desc_saddr);
343 				} else {
344 					IN6_INADDR_TO_V4MAPPED(&addr,
345 					    &nd->net_desc_daddr);
346 				}
347 		}
348 		break;
349 	case EXT_UINT64:
350 		if ((o->eo_catalog & EXD_DATA_MASK) == EXD_NET_DESC_BWLIMIT)
351 			nd->net_desc_bw_limit = o->eo_item.ei_uint64;
352 		break;
353 	case EXT_RAW:
354 		if ((o->eo_catalog & EXD_DATA_MASK) == EXD_NET_DESC_V6SADDR ||
355 		    (o->eo_catalog & EXD_DATA_MASK) == EXD_NET_DESC_V6DADDR) {
356 			in6_addr_t	addr;
357 
358 			addr = *(in6_addr_t *)o->eo_item.ei_raw;
359 			if ((o->eo_catalog & EXD_DATA_MASK) ==
360 			    EXD_NET_DESC_V6SADDR) {
361 				nd->net_desc_saddr = addr;
362 			} else {
363 				nd->net_desc_daddr = addr;
364 			}
365 		} else if ((o->eo_catalog & EXD_DATA_MASK) ==
366 		    EXD_NET_DESC_EHOST) {
367 			bcopy((uchar_t *)o->eo_item.ei_raw, nd->net_desc_ehost,
368 			    ETHERADDRL);
369 		} else if ((o->eo_catalog & EXD_DATA_MASK) ==
370 		    EXD_NET_DESC_EDEST) {
371 			bcopy((uchar_t *)o->eo_item.ei_raw, nd->net_desc_edest,
372 			    ETHERADDRL);
373 		}
374 		break;
375 	default:
376 		break;
377 	}
378 }
379 
380 /* Add a description item to the table */
381 static dladm_status_t
382 add_desc_to_tbl(net_table_t *net_table, net_desc_t *nd)
383 {
384 	net_entry_t	*ne;
385 
386 	if ((ne = calloc(1, sizeof (net_entry_t))) == NULL)
387 		return (DLADM_STATUS_NOMEM);
388 
389 	if ((ne->net_entry_tstats = calloc(1, sizeof (net_stat_t))) == NULL) {
390 		free(ne);
391 		return (DLADM_STATUS_NOMEM);
392 	}
393 
394 	ne->net_entry_desc = nd;
395 	ne->net_entry_shead = NULL;
396 	ne->net_entry_stail = NULL;
397 	ne->net_entry_scount = 0;
398 
399 	if (net_table->net_table_head == NULL) {
400 		net_table->net_table_head = ne;
401 		net_table->net_table_tail = ne;
402 	} else {
403 		net_table->net_table_tail->net_entry_next = ne;
404 		net_table->net_table_tail = ne;
405 	}
406 	net_table->net_entries++;
407 	return (DLADM_STATUS_OK);
408 }
409 
410 /* Compare dates and return if t1 is equal, greater or lesser than t2 */
411 static int
412 compare_date(net_time_t *t1, net_time_t *t2)
413 {
414 	if (t1->net_time_yr == t2->net_time_yr &&
415 	    t1->net_time_mon == t2->net_time_mon &&
416 	    t1->net_time_day == t2->net_time_day) {
417 		return (NET_DATE_EQUAL);
418 	}
419 	if (t1->net_time_yr > t2->net_time_yr ||
420 	    (t1->net_time_yr == t2->net_time_yr &&
421 	    t1->net_time_mon > t2->net_time_mon) ||
422 	    (t1->net_time_yr == t2->net_time_yr &&
423 	    t1->net_time_mon == t2->net_time_mon &&
424 	    t1->net_time_day > t2->net_time_day)) {
425 		return (NET_DATE_GREATER);
426 	}
427 	return (NET_DATE_LESSER);
428 }
429 
430 /* Compare times and return if t1 is equal, greater or lesser than t2 */
431 static int
432 compare_time(net_time_t *t1, net_time_t *t2)
433 {
434 	int	cd;
435 
436 	cd = compare_date(t1, t2);
437 
438 	if (cd == NET_DATE_GREATER) {
439 		return (NET_TIME_GREATER);
440 	} else if (cd == NET_DATE_LESSER) {
441 		return (NET_TIME_LESSER);
442 	} else {
443 		if (t1->net_time_hr == t2->net_time_hr &&
444 		    t1->net_time_min == t2->net_time_min &&
445 		    t1->net_time_sec == t2->net_time_sec) {
446 			return (NET_TIME_EQUAL);
447 		}
448 		if (t1->net_time_hr > t2->net_time_hr ||
449 		    (t1->net_time_hr == t2->net_time_hr &&
450 		    t1->net_time_min > t2->net_time_min) ||
451 		    (t1->net_time_hr == t2->net_time_hr &&
452 		    t1->net_time_min == t2->net_time_min &&
453 		    t1->net_time_sec > t2->net_time_sec)) {
454 			return (NET_TIME_GREATER);
455 		}
456 	}
457 	return (NET_TIME_LESSER);
458 }
459 
460 /*
461  * Given a start and end time and start and end entries check if the
462  * times are within the range, and adjust, if needed.
463  */
464 static dladm_status_t
465 chk_time_bound(net_time_t *s, net_time_t *e,  net_time_t *sns,
466     net_time_t *ens)
467 {
468 	if (s != NULL && e != NULL) {
469 		if (compare_time(s, e) == NET_TIME_GREATER)
470 			return (DLADM_STATUS_BADTIMEVAL);
471 	}
472 	if (s != NULL) {
473 		if (compare_time(s, sns) == NET_TIME_LESSER) {
474 			s->net_time_yr = sns->net_time_yr;
475 			s->net_time_mon = sns->net_time_mon;
476 			s->net_time_day = sns->net_time_day;
477 			s->net_time_hr = sns->net_time_hr;
478 			s->net_time_min = sns->net_time_min;
479 			s->net_time_sec = sns->net_time_sec;
480 		}
481 	}
482 	if (e != NULL) {
483 		if (compare_time(e, ens) == NET_TIME_GREATER) {
484 			e->net_time_yr = ens->net_time_yr;
485 			e->net_time_mon = ens->net_time_mon;
486 			e->net_time_day = ens->net_time_day;
487 			e->net_time_hr = ens->net_time_hr;
488 			e->net_time_min = ens->net_time_min;
489 			e->net_time_sec = ens->net_time_sec;
490 		}
491 	}
492 	return (DLADM_STATUS_OK);
493 }
494 
495 /*
496  * Given a start and end time (strings), convert them into net_time_t
497  * and also check for the range given the head and tail of the list.
498  * If stime is lower then head or etime is greated than tail, adjust.
499  */
500 static dladm_status_t
501 get_time_range(net_time_entry_t *head, net_time_entry_t *tail,
502     net_time_t *st, net_time_t *et, char *stime, char *etime)
503 {
504 	bzero(st, sizeof (net_time_t));
505 	bzero(et, sizeof (net_time_t));
506 
507 	if (stime == NULL && etime == NULL)
508 		return (0);
509 
510 	if (stime != NULL)
511 		dissect_time(stime, st);
512 	if (etime != NULL)
513 		dissect_time(etime, et);
514 
515 	if (stime != NULL || etime != NULL) {
516 		return (chk_time_bound(stime == NULL ? NULL : st,
517 		    etime == NULL ? NULL : et,
518 		    &head->my_time_stat->net_stat_time,
519 		    &tail->my_time_stat->net_stat_time));
520 	}
521 	return (0);
522 }
523 
524 /*
525  * Walk the list from a given starting point and return when we find
526  * an entry that is greater or equal to st. lasttime will point to the
527  * previous time entry.
528  */
529 static void
530 get_starting_point(net_time_entry_t *head, net_time_entry_t **start,
531     net_time_t *st, char *stime, uint64_t *lasttime)
532 {
533 	net_time_entry_t	*next = head;
534 
535 	if (head == NULL) {
536 		*start = NULL;
537 		return;
538 	}
539 	if (stime == NULL) {
540 		*start = head;
541 		*lasttime = head->my_time_stat->net_stat_ctime;
542 		return;
543 	}
544 	*start = NULL;
545 	while (next != NULL) {
546 		if (compare_time(st,
547 		    &next->my_time_stat->net_stat_time) != NET_TIME_LESSER) {
548 			*lasttime = next->my_time_stat->net_stat_ctime;
549 			next = next->net_time_entry_next;
550 			continue;
551 		}
552 		*start = next;
553 		break;
554 	}
555 }
556 
557 /*
558  * Point entry (pe) functions
559  */
560 /* Clear all the counters. Done after the contents are written to the file */
561 static void
562 clear_pe(net_plot_entry_t *pe, int entries, int *pentries)
563 {
564 	int	count;
565 
566 	for (count = 0; count < entries; count++) {
567 		pe[count].net_pe_totbytes = 0;
568 		pe[count].net_pe_totibytes = 0;
569 		pe[count].net_pe_totobytes = 0;
570 		pe[count].net_pe_tottime = 0;
571 	}
572 	*pentries = 0;
573 }
574 
575 /* Update an entry in the point entry table */
576 static void
577 update_pe(net_plot_entry_t *pe, net_stat_t *nns, int nentries,
578     int *pentries, uint64_t lasttime)
579 {
580 	int	count;
581 
582 	for (count = 0; count < nentries; count++) {
583 		if (strcmp(pe[count].net_pe_name, nns->net_stat_name) == 0)
584 			break;
585 	}
586 	if (count == nentries)
587 		return;
588 
589 	if (pe[count].net_pe_totbytes == 0)
590 		pe[count].net_pe_lasttime = lasttime;
591 
592 	pe[count].net_pe_totbytes += nns->net_stat_ibytes +
593 	    nns->net_stat_obytes;
594 	pe[count].net_pe_tottime += nns->net_stat_tdiff;
595 	pe[count].net_pe_totibytes += nns->net_stat_ibytes;
596 	pe[count].net_pe_totobytes += nns->net_stat_obytes;
597 	(*pentries)++;
598 }
599 
600 /* Flush the contents of the point entry table to the file. */
601 static void
602 add_pe_to_file(int (*fn)(dladm_usage_t *, void *), net_plot_entry_t *pe,
603     net_stat_t *ns, int entries, void *arg)
604 {
605 	int		count;
606 	dladm_usage_t	usage;
607 	uint64_t	tottime;
608 
609 	bcopy(&ns->net_stat_ctime, &usage.du_etime, sizeof (usage.du_etime));
610 	for (count = 0; count < entries; count++) {
611 		bcopy(pe[count].net_pe_name, &usage.du_name,
612 		    sizeof (usage.du_name));
613 		bcopy(&pe[count].net_pe_lasttime, &usage.du_stime,
614 		    sizeof (usage.du_stime));
615 		usage.du_rbytes = pe[count].net_pe_totibytes;
616 		usage.du_obytes = pe[count].net_pe_totobytes;
617 		tottime = pe[count].net_pe_tottime;
618 		usage.du_bandwidth = (tottime > 0) ?
619 		    ((pe[count].net_pe_totbytes * 8) / tottime) : 0;
620 		usage.du_last = (count == entries-1);
621 		fn(&usage, arg);
622 	}
623 }
624 
625 /*
626  * Net entry functions
627  */
628 static net_entry_t *
629 get_ne_from_table(net_table_t *net_table, char *name)
630 {
631 	int		count;
632 	net_desc_t	*nd;
633 	net_entry_t	*ne = net_table->net_table_head;
634 
635 	for (count = 0; count < net_table->net_entries; count++) {
636 		nd = ne->net_entry_desc;
637 		if (strcmp(name, nd->net_desc_name) == 0)
638 			return (ne);
639 		ne = ne->net_entry_next;
640 	}
641 	return (NULL);
642 }
643 
644 /*  Get the entry for the descriptor, if it exists */
645 static net_desc_t *
646 get_ndesc(net_table_t *net_table, net_desc_t *nd)
647 {
648 	int		count;
649 	net_desc_t	*nd1;
650 	net_entry_t	*ne = net_table->net_table_head;
651 
652 	for (count = 0; count < net_table->net_entries; count++) {
653 		nd1 = ne->net_entry_desc;
654 		if (strcmp(nd1->net_desc_name, nd->net_desc_name) == 0 &&
655 		    strcmp(nd1->net_desc_devname, nd->net_desc_devname) == 0 &&
656 		    bcmp(nd1->net_desc_ehost, nd->net_desc_ehost,
657 		    ETHERADDRL) == 0 &&
658 		    bcmp(nd1->net_desc_edest, nd->net_desc_edest,
659 		    ETHERADDRL) == 0 &&
660 		    nd1->net_desc_vlan_tpid == nd->net_desc_vlan_tpid &&
661 		    nd1->net_desc_vlan_tci == nd->net_desc_vlan_tci &&
662 		    nd1->net_desc_sap == nd->net_desc_sap &&
663 		    nd1->net_desc_cpuid == nd->net_desc_cpuid &&
664 		    nd1->net_desc_priority == nd->net_desc_priority &&
665 		    nd1->net_desc_bw_limit == nd->net_desc_bw_limit &&
666 		    nd1->net_desc_sport == nd->net_desc_sport &&
667 		    nd1->net_desc_dport == nd->net_desc_dport &&
668 		    nd1->net_desc_protocol == nd->net_desc_protocol &&
669 		    nd1->net_desc_dsfield == nd->net_desc_dsfield &&
670 		    IN6_ARE_ADDR_EQUAL(&nd1->net_desc_saddr,
671 		    &nd->net_desc_saddr) &&
672 		    IN6_ARE_ADDR_EQUAL(&nd1->net_desc_daddr,
673 		    &nd->net_desc_daddr)) {
674 			return (nd1);
675 		}
676 		ne = ne->net_entry_next;
677 	}
678 	return (NULL);
679 }
680 
681 /*
682  * Update the stat entries. The stats in the file are cumulative, so in order
683  * to have increments, we maintain a reference stat entry, which contains
684  * the stats when the record was first written and a total stat entry, which
685  * maintains the running count. When we want to add a stat entry, if it
686  * the reference stat entry, we don't come here. For subsequent entries,
687  * we get the increment by subtracting the current value from the reference
688  * stat and the total stat.
689  */
690 static void
691 update_stats(net_stat_t *ns1, net_entry_t *ne, net_stat_t *ref)
692 {
693 
694 	/* get the increment */
695 	ns1->net_stat_ibytes -= (ref->net_stat_ibytes + ref->net_stat_tibytes);
696 	ns1->net_stat_obytes -= (ref->net_stat_obytes + ref->net_stat_tobytes);
697 	ns1->net_stat_ipackets -= (ref->net_stat_ipackets +
698 	    ref->net_stat_tipackets);
699 	ns1->net_stat_opackets -= (ref->net_stat_opackets +
700 	    ref->net_stat_topackets);
701 	ns1->net_stat_ierrors -= (ref->net_stat_ierrors +
702 	    ref->net_stat_tierrors);
703 	ns1->net_stat_oerrors -= (ref->net_stat_oerrors +
704 	    ref->net_stat_toerrors);
705 
706 	/* update total bytes */
707 	ref->net_stat_tibytes += ns1->net_stat_ibytes;
708 	ref->net_stat_tobytes += ns1->net_stat_obytes;
709 	ref->net_stat_tipackets += ns1->net_stat_ipackets;
710 	ref->net_stat_topackets += ns1->net_stat_opackets;
711 	ref->net_stat_tierrors += ns1->net_stat_ierrors;
712 	ref->net_stat_toerrors  += ns1->net_stat_oerrors;
713 
714 	ne->net_entry_tstats->net_stat_ibytes += ns1->net_stat_ibytes;
715 	ne->net_entry_tstats->net_stat_obytes += ns1->net_stat_obytes;
716 	ne->net_entry_tstats->net_stat_ipackets += ns1->net_stat_ipackets;
717 	ne->net_entry_tstats->net_stat_opackets += ns1->net_stat_opackets;
718 	ne->net_entry_tstats->net_stat_ierrors += ns1->net_stat_ierrors;
719 	ne->net_entry_tstats->net_stat_oerrors += ns1->net_stat_oerrors;
720 }
721 
722 /* Add the stat entry into the table */
723 static dladm_status_t
724 add_stat_to_tbl(net_table_t *net_table, net_stat_t *ns)
725 {
726 	net_entry_t	*ne;
727 
728 	ne = get_ne_from_table(net_table, ns->net_stat_name);
729 	if (ne == NULL)
730 		return (DLADM_STATUS_NOMEM);
731 
732 	/* Ptr to flow desc */
733 	ns->net_stat_desc = ne->net_entry_desc;
734 	if (ns->net_stat_desc->net_desc_newrec) {
735 		ns->net_stat_desc->net_desc_newrec = B_FALSE;
736 		ns->net_stat_isref = B_TRUE;
737 		ne->net_entry_sref = ns;
738 	} else if (ns->net_stat_ibytes < ne->net_entry_sref->net_stat_tibytes ||
739 	    (ns->net_stat_obytes < ne->net_entry_sref->net_stat_tobytes)) {
740 		ns->net_stat_isref = B_TRUE;
741 		ne->net_entry_sref = ns;
742 	} else {
743 		ns->net_stat_isref = B_FALSE;
744 		update_stats(ns, ne, ne->net_entry_sref);
745 	}
746 	if (ne->net_entry_shead == NULL) {
747 		ne->net_entry_shead = ns;
748 		ne->net_entry_stail = ns;
749 	} else {
750 		if (!ns->net_stat_isref) {
751 			ne->net_entry_ttime += (ns->net_stat_ctime -
752 			    ne->net_entry_stail->net_stat_ctime);
753 			ns->net_stat_tdiff = ns->net_stat_ctime -
754 			    ne->net_entry_stail->net_stat_ctime;
755 		}
756 		ne->net_entry_stail->net_stat_next = ns;
757 		ne->net_entry_stail = ns;
758 	}
759 
760 	ne->net_entry_scount++;
761 	return (DLADM_STATUS_OK);
762 }
763 
764 /* Add a flow/link descriptor record to the table */
765 static dladm_status_t
766 add_desc(net_table_t *net_table, ea_file_t *ef, int nobjs)
767 {
768 	net_desc_t	*nd;
769 	net_desc_t	*dnd;
770 	int		count;
771 	ea_object_t	scratch;
772 
773 	if ((nd = calloc(1, sizeof (net_desc_t))) == NULL)
774 		return (DLADM_STATUS_NOMEM);
775 	nd->net_desc_newrec = B_TRUE;
776 
777 	for (count = 0; count < nobjs; count++) {
778 		if (ea_get_object(ef, &scratch) == -1) {
779 			free(nd);
780 			return (DLADM_STATUS_NOMEM);
781 		}
782 		add_desc_item(&scratch, nd);
783 	}
784 	if ((dnd = get_ndesc(net_table, nd)) != NULL) {
785 		dnd->net_desc_newrec = B_TRUE;
786 		free(nd);
787 		return (DLADM_STATUS_OK);
788 	}
789 	if (add_desc_to_tbl(net_table, nd) != 0) {
790 		free(nd);
791 		return (DLADM_STATUS_NOMEM);
792 	}
793 	return (DLADM_STATUS_OK);
794 }
795 
796 /* Make an entry into the time sorted list */
797 static void
798 addto_time_list(net_table_t *net_table, net_time_entry_t *nt,
799     net_time_entry_t *ntc)
800 {
801 	net_stat_t		*ns = nt->my_time_stat;
802 	net_stat_t		*ns1;
803 	net_time_entry_t	*end;
804 	net_time_t		*t1;
805 	int			count;
806 
807 	t1 = &ns->net_stat_time;
808 
809 	net_table->net_time_entries++;
810 
811 	if (net_table->net_time_head == NULL) {
812 		net_table->net_time_head = nt;
813 		net_table->net_time_tail = nt;
814 	} else {
815 		net_table->net_time_tail->net_time_entry_next = nt;
816 		nt->net_time_entry_prev = net_table->net_time_tail;
817 		net_table->net_time_tail = nt;
818 	}
819 
820 	if (net_table->net_ctime_head == NULL) {
821 		net_table->net_ctime_head = ntc;
822 		net_table->net_ctime_tail = ntc;
823 	} else {
824 		end = net_table->net_ctime_tail;
825 		count = 0;
826 		while (count < net_table->net_time_entries - 1) {
827 			ns1 = end->my_time_stat;
828 			/* Just add it to the tail */
829 			if (compare_date(t1, &ns1->net_stat_time) ==
830 			    NET_DATE_GREATER) {
831 				break;
832 			}
833 			if (strcmp(ns1->net_stat_name, ns->net_stat_name) ==
834 			    0) {
835 				ntc->net_time_entry_next =
836 				    end->net_time_entry_next;
837 				if (end->net_time_entry_next != NULL) {
838 					end->net_time_entry_next->
839 					    net_time_entry_prev = ntc;
840 				} else {
841 					net_table->net_ctime_tail = ntc;
842 				}
843 				end->net_time_entry_next = ntc;
844 				ntc->net_time_entry_prev = end;
845 				return;
846 			}
847 			count++;
848 			end = end->net_time_entry_prev;
849 		}
850 		net_table->net_ctime_tail->net_time_entry_next = ntc;
851 		ntc->net_time_entry_prev = net_table->net_ctime_tail;
852 		net_table->net_ctime_tail = ntc;
853 	}
854 }
855 
856 /* Add stat entry into the lists */
857 static dladm_status_t
858 add_stats(net_table_t *net_table, ea_file_t *ef, int nobjs)
859 {
860 	net_stat_t		*ns;
861 	int			count;
862 	ea_object_t		scratch;
863 	net_time_entry_t	*nt;
864 	net_time_entry_t	*ntc;
865 
866 	if ((ns = calloc(1, sizeof (net_stat_t))) == NULL)
867 		return (DLADM_STATUS_NOMEM);
868 
869 	if ((nt = calloc(1, sizeof (net_time_entry_t))) == NULL) {
870 		free(ns);
871 		return (DLADM_STATUS_NOMEM);
872 	}
873 	if ((ntc = calloc(1, sizeof (net_time_entry_t))) == NULL) {
874 		free(ns);
875 		free(nt);
876 		return (DLADM_STATUS_NOMEM);
877 	}
878 
879 	nt->my_time_stat = ns;
880 	ntc->my_time_stat = ns;
881 
882 	for (count = 0; count < nobjs; count++) {
883 		if (ea_get_object(ef, &scratch) == -1) {
884 			free(ns);
885 			free(nt);
886 			free(ntc);
887 			return (DLADM_STATUS_NOMEM);
888 		}
889 		add_stat_item(&scratch, ns);
890 	}
891 	if (add_stat_to_tbl(net_table, ns) != 0) {
892 		free(ns);
893 		free(nt);
894 		free(ntc);
895 		return (DLADM_STATUS_NOMEM);
896 	}
897 	addto_time_list(net_table, nt, ntc);
898 	return (DLADM_STATUS_OK);
899 }
900 
901 /* Free the entire table */
902 static void
903 free_logtable(net_table_t *net_table)
904 {
905 	net_entry_t		*head;
906 	net_entry_t		*next;
907 	net_stat_t		*ns;
908 	net_stat_t		*ns1;
909 	net_time_entry_t	*thead;
910 	net_time_entry_t	*tnext;
911 
912 	thead = net_table->net_time_head;
913 	while (thead != NULL) {
914 		thead->my_time_stat = NULL;
915 		tnext = thead->net_time_entry_next;
916 		thead->net_time_entry_next = NULL;
917 		thead->net_time_entry_prev = NULL;
918 		free(thead);
919 		thead = tnext;
920 	}
921 	net_table->net_time_head = NULL;
922 	net_table->net_time_tail = NULL;
923 
924 	thead = net_table->net_ctime_head;
925 	while (thead != NULL) {
926 		thead->my_time_stat = NULL;
927 		tnext = thead->net_time_entry_next;
928 		thead->net_time_entry_next = NULL;
929 		thead->net_time_entry_prev = NULL;
930 		free(thead);
931 		thead = tnext;
932 	}
933 	net_table->net_ctime_head = NULL;
934 	net_table->net_ctime_tail = NULL;
935 
936 	net_table->net_time_entries = 0;
937 
938 	head = net_table->net_table_head;
939 	while (head != NULL) {
940 		next = head->net_entry_next;
941 		head->net_entry_next = NULL;
942 		ns = head->net_entry_shead;
943 		while (ns != NULL) {
944 			ns1 = ns->net_stat_next;
945 			free(ns);
946 			ns = ns1;
947 		}
948 		head->net_entry_scount = 0;
949 		head->net_entry_sref = NULL;
950 		free(head->net_entry_desc);
951 		free(head->net_entry_tstats);
952 		free(head);
953 		head = next;
954 	}
955 	net_table->net_table_head = NULL;
956 	net_table->net_table_tail = NULL;
957 	net_table->net_time_entries = 0;
958 	free(net_table);
959 }
960 
961 /* Parse the exacct file, and return the parsed table. */
962 static void *
963 parse_logfile(char *file, int logtype, dladm_status_t *status)
964 {
965 	ea_file_t	ef;
966 	ea_object_t	scratch;
967 	net_table_t	*net_table;
968 
969 	*status = DLADM_STATUS_OK;
970 	if ((net_table = calloc(1, sizeof (net_table_t))) == NULL) {
971 		*status = DLADM_STATUS_NOMEM;
972 		return (NULL);
973 	}
974 	if (ea_open(&ef, file, NULL, 0, O_RDONLY, 0) == -1) {
975 		*status = DLADM_STATUS_BADARG;
976 		free(net_table);
977 		return (NULL);
978 	}
979 	bzero(&scratch, sizeof (ea_object_t));
980 	while (ea_get_object(&ef, &scratch) != -1) {
981 		if (scratch.eo_type != EO_GROUP) {
982 			(void) ea_free_item(&scratch, EUP_ALLOC);
983 			(void) bzero(&scratch, sizeof (ea_object_t));
984 			continue;
985 		}
986 		/* Read Link Desc/Stat records */
987 		if (logtype == DLADM_LOGTYPE_FLOW) {
988 			/* Flow Descriptor */
989 			if ((scratch.eo_catalog &
990 			    EXD_DATA_MASK) == EXD_GROUP_NET_FLOW_DESC) {
991 				(void) add_desc(net_table, &ef,
992 				    scratch.eo_group.eg_nobjs - 1);
993 			/* Flow Stats */
994 			} else if ((scratch.eo_catalog &
995 			    EXD_DATA_MASK) == EXD_GROUP_NET_FLOW_STATS) {
996 				(void) add_stats(net_table, &ef,
997 				    scratch.eo_group.eg_nobjs - 1);
998 			}
999 		} else if (logtype == DLADM_LOGTYPE_LINK) {
1000 			/* Link Descriptor */
1001 			if ((scratch.eo_catalog &
1002 			    EXD_DATA_MASK) == EXD_GROUP_NET_LINK_DESC) {
1003 				(void) add_desc(net_table, &ef,
1004 				    scratch.eo_group.eg_nobjs - 1);
1005 			/* Link Stats */
1006 			} else if ((scratch.eo_catalog &
1007 			    EXD_DATA_MASK) == EXD_GROUP_NET_LINK_STATS) {
1008 				(void) add_stats(net_table, &ef,
1009 				    scratch.eo_group.eg_nobjs - 1);
1010 			}
1011 		} else {
1012 			if (((scratch.eo_catalog & EXD_DATA_MASK) ==
1013 			    EXD_GROUP_NET_LINK_DESC) || ((scratch.eo_catalog &
1014 			    EXD_DATA_MASK) == EXD_GROUP_NET_FLOW_DESC)) {
1015 				(void) add_desc(net_table, &ef,
1016 				    scratch.eo_group.eg_nobjs - 1);
1017 			} else if (((scratch.eo_catalog & EXD_DATA_MASK) ==
1018 			    EXD_GROUP_NET_LINK_STATS) || ((scratch.eo_catalog &
1019 			    EXD_DATA_MASK) == EXD_GROUP_NET_FLOW_STATS)) {
1020 				(void) add_stats(net_table, &ef,
1021 				    scratch.eo_group.eg_nobjs - 1);
1022 			}
1023 		}
1024 		(void) ea_free_item(&scratch, EUP_ALLOC);
1025 		(void) bzero(&scratch, sizeof (ea_object_t));
1026 	}
1027 
1028 	(void) ea_close(&ef);
1029 	return ((void *)net_table);
1030 }
1031 
1032 /*
1033  * Walk the ctime list.  This is used when looking for usage records
1034  * based on a "resource" name.
1035  */
1036 dladm_status_t
1037 dladm_walk_usage_res(int (*fn)(dladm_usage_t *, void *), int logtype,
1038     char *logfile, char *resource, char *stime, char *etime, void *arg)
1039 {
1040 	net_table_t		*net_table;
1041 	net_time_t		st, et;
1042 	net_time_entry_t	*start;
1043 	net_stat_t		*ns = NULL;
1044 	net_stat_t		*nns;
1045 	uint64_t		tot_time = 0;
1046 	uint64_t		last_time;
1047 	uint64_t		tot_bytes = 0;
1048 	uint64_t		tot_ibytes = 0;
1049 	uint64_t		tot_obytes = 0;
1050 	boolean_t		gotstart = B_FALSE;
1051 	dladm_status_t		status;
1052 	dladm_usage_t		usage;
1053 	int			step = 1;
1054 
1055 	/* Parse the log file */
1056 	net_table = parse_logfile(logfile, logtype, &status);
1057 	if (net_table == NULL)
1058 		return (status);
1059 
1060 	if (net_table->net_entries == 0)
1061 		return (DLADM_STATUS_OK);
1062 	start = net_table->net_ctime_head;
1063 
1064 	/* Time range */
1065 	status = get_time_range(net_table->net_ctime_head,
1066 	    net_table->net_ctime_tail, &st, &et, stime, etime);
1067 	if (status != DLADM_STATUS_OK)
1068 		return (status);
1069 
1070 	while (start != NULL) {
1071 		nns = start->my_time_stat;
1072 
1073 		/* Get to the resource we are interested in */
1074 		if (strcmp(resource, nns->net_stat_name) != 0) {
1075 			start = start->net_time_entry_next;
1076 			continue;
1077 		}
1078 
1079 		/* Find the first record */
1080 		if (!gotstart) {
1081 			get_starting_point(start, &start, &st, stime,
1082 			    &last_time);
1083 			if (start == NULL)
1084 				break;
1085 			nns = start->my_time_stat;
1086 			gotstart = B_TRUE;
1087 		}
1088 
1089 		/* Write one entry and return if we are out of the range */
1090 		if (etime != NULL && compare_time(&nns->net_stat_time, &et)
1091 		    == NET_TIME_GREATER) {
1092 			if (tot_bytes != 0) {
1093 				bcopy(ns->net_stat_name, &usage.du_name,
1094 				    sizeof (usage.du_name));
1095 				bcopy(&last_time, &usage.du_stime,
1096 				    sizeof (usage.du_stime));
1097 				bcopy(&ns->net_stat_ctime, &usage.du_etime,
1098 				    sizeof (usage.du_etime));
1099 				usage.du_rbytes = tot_ibytes;
1100 				usage.du_obytes = tot_obytes;
1101 				usage.du_bandwidth = tot_bytes*8/tot_time;
1102 				usage.du_last = B_TRUE;
1103 				fn(&usage, arg);
1104 			}
1105 			return (DLADM_STATUS_OK);
1106 		}
1107 
1108 		/*
1109 		 * If this is a reference entry, just print what we have
1110 		 * and proceed.
1111 		 */
1112 		if (nns->net_stat_isref) {
1113 			if (tot_bytes != 0) {
1114 				bcopy(&nns->net_stat_name, &usage.du_name,
1115 				    sizeof (usage.du_name));
1116 				bcopy(&nns->net_stat_ctime, &usage.du_stime,
1117 				    sizeof (usage.du_stime));
1118 				usage.du_rbytes = tot_ibytes;
1119 				usage.du_obytes = tot_obytes;
1120 				usage.du_bandwidth = tot_bytes*8/tot_time;
1121 				usage.du_last = B_TRUE;
1122 				fn(&usage, arg);
1123 				NET_RESET_TOT(tot_bytes, tot_time, tot_ibytes,
1124 				    tot_obytes, step);
1125 			}
1126 			last_time = nns->net_stat_ctime;
1127 			start = start->net_time_entry_next;
1128 			continue;
1129 		}
1130 
1131 		ns = nns;
1132 		if (--step == 0) {
1133 			tot_bytes += ns->net_stat_ibytes + ns->net_stat_obytes;
1134 			tot_ibytes += ns->net_stat_ibytes;
1135 			tot_obytes += ns->net_stat_obytes;
1136 			tot_time += ns->net_stat_tdiff;
1137 			bcopy(&ns->net_stat_name, &usage.du_name,
1138 			    sizeof (usage.du_name));
1139 			bcopy(&last_time, &usage.du_stime,
1140 			    sizeof (usage.du_stime));
1141 			bcopy(&ns->net_stat_ctime, &usage.du_etime,
1142 			    sizeof (usage.du_etime));
1143 			usage.du_rbytes = tot_ibytes;
1144 			usage.du_obytes = tot_obytes;
1145 			usage.du_bandwidth = tot_bytes*8/tot_time;
1146 			usage.du_last = B_TRUE;
1147 			fn(&usage, arg);
1148 
1149 			NET_RESET_TOT(tot_bytes, tot_time, tot_ibytes,
1150 			    tot_obytes, step);
1151 			last_time = ns->net_stat_ctime;
1152 		} else {
1153 			tot_bytes += ns->net_stat_ibytes + ns->net_stat_obytes;
1154 			tot_ibytes += ns->net_stat_ibytes;
1155 			tot_obytes += ns->net_stat_obytes;
1156 			tot_time += ns->net_stat_tdiff;
1157 		}
1158 		start = start->net_time_entry_next;
1159 	}
1160 
1161 	if (tot_bytes != 0) {
1162 		bcopy(&ns->net_stat_name, &usage.du_name,
1163 		    sizeof (usage.du_name));
1164 		bcopy(&last_time, &usage.du_stime,
1165 		    sizeof (usage.du_stime));
1166 		bcopy(&ns->net_stat_ctime, &usage.du_etime,
1167 		    sizeof (usage.du_etime));
1168 		usage.du_rbytes = tot_ibytes;
1169 		usage.du_obytes = tot_obytes;
1170 		usage.du_bandwidth = tot_bytes*8/tot_time;
1171 		usage.du_last = B_TRUE;
1172 		fn(&usage, arg);
1173 	}
1174 
1175 	free_logtable(net_table);
1176 	return (status);
1177 }
1178 
1179 /*
1180  * Walk the time sorted list if a resource is not specified.
1181  */
1182 dladm_status_t
1183 dladm_walk_usage_time(int (*fn)(dladm_usage_t *, void *), int logtype,
1184     char *logfile, char *stime, char *etime, void *arg)
1185 {
1186 	net_table_t		*net_table;
1187 	net_time_entry_t	*start;
1188 	net_stat_t		*ns = NULL, *nns;
1189 	net_time_t		st, et, *t1;
1190 	net_desc_t		*nd;
1191 	net_entry_t		*ne;
1192 	net_plot_entry_t	*pe;
1193 	int			count;
1194 	int			step = 1;
1195 	int			nentries = 0, pentries = 0;
1196 	uint64_t		last_time;
1197 	dladm_status_t		status;
1198 
1199 	/* Parse the log file */
1200 	net_table = parse_logfile(logfile, logtype, &status);
1201 	if (net_table == NULL)
1202 		return (status);
1203 
1204 	if (net_table->net_entries == 0)
1205 		return (DLADM_STATUS_OK);
1206 	start = net_table->net_time_head;
1207 
1208 	/* Find the first and last records and starting point */
1209 	status = get_time_range(net_table->net_time_head,
1210 	    net_table->net_time_tail, &st, &et, stime, etime);
1211 	if (status != DLADM_STATUS_OK)
1212 		return (status);
1213 	get_starting_point(start, &start, &st, stime, &last_time);
1214 	/*
1215 	 * Could assert to be non-null, since get_time_range()
1216 	 * would have adjusted.
1217 	 */
1218 	if (start == NULL)
1219 		return (DLADM_STATUS_BADTIMEVAL);
1220 
1221 	/*
1222 	 * Collect entries for all resources in a time slot before
1223 	 * writing to the file.
1224 	 */
1225 	nentries = net_table->net_entries;
1226 
1227 	pe = malloc(sizeof (net_plot_entry_t) * net_table->net_entries + 1);
1228 	if (pe == NULL)
1229 		return (DLADM_STATUS_NOMEM);
1230 
1231 	ne = net_table->net_table_head;
1232 	for (count = 0; count < nentries; count++) {
1233 		nd = ne->net_entry_desc;
1234 		pe[count].net_pe_name = nd->net_desc_name;
1235 		ne = ne->net_entry_next;
1236 	}
1237 
1238 	clear_pe(pe, nentries, &pentries);
1239 
1240 	/* Write header to file */
1241 	/* add_pe_to_file(fn, pe, ns, nentries, arg); */
1242 
1243 	t1 = &start->my_time_stat->net_stat_time;
1244 
1245 	while (start != NULL) {
1246 
1247 		nns = start->my_time_stat;
1248 		/*
1249 		 * We have crossed the time boundary, check if we need to
1250 		 * print out now.
1251 		 */
1252 		if (compare_time(&nns->net_stat_time, t1) ==
1253 		    NET_TIME_GREATER) {
1254 			/* return if we are out of the range */
1255 			if (etime != NULL &&
1256 			    compare_time(&nns->net_stat_time, &et) ==
1257 			    NET_TIME_GREATER) {
1258 				if (pentries > 0) {
1259 					add_pe_to_file(fn, pe, ns, nentries,
1260 					    arg);
1261 					clear_pe(pe, nentries, &pentries);
1262 				}
1263 				free(pe);
1264 				return (DLADM_STATUS_OK);
1265 			}
1266 			/* update the stats from the ns. */
1267 			t1 = &nns->net_stat_time;
1268 			last_time = ns->net_stat_ctime;
1269 			if (--step == 0) {
1270 				if (pentries > 0) {
1271 					add_pe_to_file(fn, pe, ns, nentries,
1272 					    arg);
1273 					clear_pe(pe, nentries, &pentries);
1274 				}
1275 				step = 1;
1276 			}
1277 		}
1278 
1279 		/*
1280 		 * if this is a reference entry, just print what we have
1281 		 * for this resource and proceed. We will end up writing
1282 		 * the stats for all the entries when we hit a ref element,
1283 		 * which means 'steps' for some might not be accurate, but
1284 		 * that is fine, the alternative is to write only the
1285 		 * resource for which we hit a reference entry.
1286 		 */
1287 		if (nns->net_stat_isref) {
1288 			if (pentries > 0) {
1289 				add_pe_to_file(fn, pe, ns, nentries, arg);
1290 				clear_pe(pe, nentries, &pentries);
1291 			}
1292 			step = 1;
1293 		} else {
1294 			update_pe(pe, nns, nentries, &pentries, last_time);
1295 		}
1296 		ns = nns;
1297 		start = start->net_time_entry_next;
1298 	}
1299 
1300 	if (pentries > 0)
1301 		add_pe_to_file(fn, pe, ns, nentries, arg);
1302 
1303 	free(pe);
1304 	free_logtable(net_table);
1305 
1306 	return (DLADM_STATUS_OK);
1307 }
1308 
1309 dladm_status_t
1310 dladm_usage_summary(int (*fn)(dladm_usage_t *, void *), int logtype,
1311     char *logfile, void *arg)
1312 {
1313 	net_table_t		*net_table;
1314 	net_entry_t		*ne;
1315 	net_desc_t		*nd;
1316 	net_stat_t		*ns;
1317 	int			count;
1318 	dladm_usage_t		usage;
1319 	dladm_status_t		status;
1320 
1321 	/* Parse the log file */
1322 	net_table = parse_logfile(logfile, logtype, &status);
1323 	if (net_table == NULL)
1324 		return (status);
1325 
1326 	if (net_table->net_entries == 0)
1327 		return (DLADM_STATUS_OK);
1328 
1329 	ne = net_table->net_table_head;
1330 	for (count = 0; count < net_table->net_entries; count++) {
1331 		ns = ne->net_entry_tstats;
1332 		nd = ne->net_entry_desc;
1333 
1334 		if (ns->net_stat_ibytes + ns->net_stat_obytes == 0)
1335 			continue;
1336 		bcopy(&nd->net_desc_name, &usage.du_name,
1337 		    sizeof (usage.du_name));
1338 		usage.du_duration = ne->net_entry_ttime;
1339 		usage.du_ipackets = ns->net_stat_ipackets;
1340 		usage.du_rbytes = ns->net_stat_ibytes;
1341 		usage.du_opackets = ns->net_stat_opackets;
1342 		usage.du_obytes = ns->net_stat_obytes;
1343 		usage.du_bandwidth =
1344 		    (ns->net_stat_ibytes + ns->net_stat_obytes) * 8 /
1345 		    usage.du_duration;
1346 		usage.du_last = (count == net_table->net_entries-1);
1347 		fn(&usage, arg);
1348 
1349 		ne = ne->net_entry_next;
1350 	}
1351 
1352 	free_logtable(net_table);
1353 	return (DLADM_STATUS_OK);
1354 }
1355 
1356 /*
1357  * Walk the ctime list and display the dates of the records.
1358  */
1359 dladm_status_t
1360 dladm_usage_dates(int (*fn)(dladm_usage_t *, void *), int logtype,
1361     char *logfile, char *resource, void *arg)
1362 {
1363 	net_table_t		*net_table;
1364 	net_time_entry_t	*start;
1365 	net_stat_t		*nns;
1366 	net_time_t		st;
1367 	net_time_t		*lasttime = NULL;
1368 	uint64_t		last_time;
1369 	boolean_t		gotstart = B_FALSE;
1370 	dladm_status_t		status;
1371 	dladm_usage_t		usage;
1372 
1373 	/* Parse the log file */
1374 	net_table = parse_logfile(logfile, logtype, &status);
1375 	if (net_table == NULL)
1376 		return (status);
1377 
1378 	if (net_table->net_entries == 0)
1379 		return (DLADM_STATUS_OK);
1380 
1381 	start = net_table->net_ctime_head;
1382 
1383 	while (start != NULL) {
1384 		nns = start->my_time_stat;
1385 
1386 		/* get to the resource we are interested in */
1387 		if (resource != NULL) {
1388 			if (strcmp(resource, nns->net_stat_name) != 0) {
1389 				start = start->net_time_entry_next;
1390 				continue;
1391 			}
1392 		}
1393 
1394 		/* get the starting point in the logfile */
1395 		if (!gotstart) {
1396 			get_starting_point(start, &start, &st, NULL,
1397 			    &last_time);
1398 			if (start == NULL)
1399 				break;
1400 			nns = start->my_time_stat;
1401 			gotstart = B_TRUE;
1402 		}
1403 
1404 		if (lasttime == NULL ||
1405 		    compare_date(&nns->net_stat_time, lasttime) ==
1406 		    NET_DATE_GREATER) {
1407 			bzero(&usage, sizeof (dladm_usage_t));
1408 			(void) strlcpy(usage.du_name, nns->net_stat_name,
1409 			    sizeof (usage.du_name));
1410 			bcopy(&nns->net_stat_ctime, &usage.du_stime,
1411 			    sizeof (usage.du_stime));
1412 			fn(&usage, arg);
1413 			lasttime = &nns->net_stat_time;
1414 		}
1415 
1416 		start = start->net_time_entry_next;
1417 		continue;
1418 	}
1419 
1420 	free_logtable(net_table);
1421 	return (status);
1422 }
1423