Annotation of src/usr.bin/systat/mbufs.c, Revision 1.31
1.31 ! claudio 1: /* $OpenBSD: mbufs.c,v 1.30 2010/11/02 10:24:34 dlg Exp $ */
1.19 canacar 2: /*
3: * Copyright (c) 2008 Can Erkin Acar <canacar@openbsd.org>
1.1 deraadt 4: *
1.19 canacar 5: * Permission to use, copy, modify, and distribute this software for any
6: * purpose with or without fee is hereby granted, provided that the above
7: * copyright notice and this permission notice appear in all copies.
1.1 deraadt 8: *
1.19 canacar 9: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1 deraadt 16: */
17: #include <sys/param.h>
18: #include <sys/types.h>
1.19 canacar 19: #include <sys/socket.h>
20: #include <sys/sysctl.h>
1.1 deraadt 21: #include <sys/mbuf.h>
1.28 blambert 22: #include <sys/pool.h>
1.19 canacar 23: #include <net/if.h>
1.1 deraadt 24:
1.19 canacar 25: #include <err.h>
26: #include <errno.h>
27: #include <ifaddrs.h>
1.1 deraadt 28: #include <stdlib.h>
29: #include <string.h>
1.19 canacar 30:
1.1 deraadt 31: #include "systat.h"
1.18 canacar 32:
33:
1.19 canacar 34: /* pool info for mcl* pools */
35: struct mclpool_info {
36: char title[16];
37: int pool_offset;
38: int size;
39: } mclpools[MCLPOOLS];
40:
41: int mclpool_count = 0;
42: int mbpool_index = -1;
43: struct pool mbpool;
1.31 ! claudio 44: u_int mcllivelocks, mcllivelocks_cur, mcllivelocks_diff;
1.19 canacar 45:
46: /* interfaces */
47: static int num_ifs;
48: struct if_info {
49: char name[16];
50: struct if_data data;
51: } *interfaces = NULL;
52:
1.18 canacar 53: void print_mb(void);
54: int read_mb(void);
55: int select_mb(void);
1.23 kettenis 56: static void showmbuf(struct if_info *, int, int);
1.1 deraadt 57:
58:
1.19 canacar 59: /* Define fields */
60: field_def fields_mbuf[] = {
61: {"IFACE", 8, 16, 1, FLD_ALIGN_LEFT, -1, 0, 0, 0},
62: {"RXDELAY", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0},
63: {"TXDELAY", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0},
64: {"LIVELOCKS", 5, 10, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0},
65: {"SIZE", 3, 5, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0},
66: {"ALIVE", 3, 5, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0},
67: {"LWM", 3, 5, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0},
68: {"HWM", 3, 5, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0},
1.22 dlg 69: {"CWM", 3, 5, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0},
1.1 deraadt 70: };
71:
72:
1.19 canacar 73: #define FIELD_ADDR(x) (&fields_mbuf[x])
1.18 canacar 74:
1.19 canacar 75: #define FLD_MB_IFACE FIELD_ADDR(0)
76: #define FLD_MB_RXDELAY FIELD_ADDR(1)
77: #define FLD_MB_TXDELAY FIELD_ADDR(2)
1.26 henning 78: #define FLD_MB_LLOCKS FIELD_ADDR(3)
79: #define FLD_MB_MSIZE FIELD_ADDR(4)
80: #define FLD_MB_MALIVE FIELD_ADDR(5)
81: #define FLD_MB_MLWM FIELD_ADDR(6)
82: #define FLD_MB_MHWM FIELD_ADDR(7)
83: #define FLD_MB_MCWM FIELD_ADDR(8)
1.18 canacar 84:
85:
86: /* Define views */
1.19 canacar 87: field_def *view_mbuf[] = {
88: FLD_MB_IFACE,
89: #if NOTYET
90: FLD_MB_RXDELAY, FLD_MB_TXDELAY,
91: #endif
1.26 henning 92: FLD_MB_LLOCKS, FLD_MB_MSIZE, FLD_MB_MALIVE, FLD_MB_MLWM, FLD_MB_MHWM,
93: FLD_MB_MCWM, NULL
1.18 canacar 94: };
95:
1.19 canacar 96: /* Define view managers */
1.18 canacar 97:
98: struct view_manager mbuf_mgr = {
99: "Mbufs", select_mb, read_mb, NULL, print_header,
100: print_mb, keyboard_callback, NULL, NULL
101: };
102:
103: field_view views_mb[] = {
1.19 canacar 104: {view_mbuf, "mbufs", '4', &mbuf_mgr},
1.18 canacar 105: {NULL, NULL, 0, NULL}
106: };
107:
108:
109: int
1.19 canacar 110: initmembufs(void)
1.1 deraadt 111: {
1.19 canacar 112: field_view *v;
113: int i, mib[4], npools;
114: struct pool pool;
115: char pname[32];
116: size_t size;
117:
118: /* go through all pools to identify mbuf and cluster pools */
119: bzero(mclpools, sizeof(mclpools));
1.18 canacar 120:
1.19 canacar 121: mib[0] = CTL_KERN;
122: mib[1] = KERN_POOL;
123: mib[2] = KERN_POOL_NPOOLS;
124: size = sizeof(npools);
125:
126: if (sysctl(mib, 3, &npools, &size, NULL, 0) < 0) {
127: err(1, "sysctl(KERN_POOL_NPOOLS)");
128: /* NOTREACHED */
129: }
130:
131: for (i = 1; i <= npools; i++) {
132: mib[0] = CTL_KERN;
133: mib[1] = KERN_POOL;
134: mib[2] = KERN_POOL_NAME;
135: mib[3] = i;
136: size = sizeof(pname);
137: if (sysctl(mib, 4, &pname, &size, NULL, 0) < 0) {
1.21 canacar 138: continue;
1.19 canacar 139: }
140:
141: if (strcmp(pname, "mbpl") == 0) {
142: mbpool_index = i;
143: continue;
144: }
145:
146: if (strncmp(pname, "mcl", 3) != 0)
147: continue;
148:
149: if (mclpool_count == MCLPOOLS) {
1.24 chl 150: warnx("mbufs: Too many mcl* pools");
1.19 canacar 151: break;
152: }
153:
154: mib[2] = KERN_POOL_POOL;
155: size = sizeof(struct pool);
156:
157: if (sysctl(mib, 4, &pool, &size, NULL, 0) < 0) {
158: err(1, "sysctl(KERN_POOL_POOL, %d)", i);
159: /* NOTREACHED */
160: }
161:
162: mclpools[mclpool_count].size = pool.pr_size;
163: mclpools[mclpool_count].pool_offset = i;
164: snprintf(mclpools[mclpool_count].title,
165: sizeof(mclpools[0].title), "%dk",
166: pool.pr_size / 1024);
167:
168: mclpool_count++;
169: }
170:
171: if (mclpool_count != MCLPOOLS)
172: warnx("mbufs: Unable to read all %d mcl* pools", MCLPOOLS);
173:
174: /* add view to the engine */
175: for (v = views_mb; v->name != NULL; v++)
176: add_view(v);
177:
178:
179: /* finally read it once */
1.18 canacar 180: read_mb();
181:
1.19 canacar 182: return(1);
183: }
1.18 canacar 184:
1.19 canacar 185: int
186: select_mb(void)
187: {
188: num_disp = 0;
1.18 canacar 189: return (0);
1.1 deraadt 190: }
191:
1.18 canacar 192: int
193: read_mb(void)
1.1 deraadt 194: {
1.19 canacar 195: struct pool pool;
196: struct ifaddrs *ifap, *ifa;
197: struct if_info *ifi;
198: int mib[4];
199: int i, p, nif, ret = 1;
200: size_t size;
201:
1.30 dlg 202: mib[0] = CTL_KERN;
203: mib[1] = KERN_NETLIVELOCKS;
1.31 ! claudio 204: size = sizeof(mcllivelocks_cur);
! 205: if (sysctl(mib, 2, &mcllivelocks_cur, &size, NULL, 0) < 0 &&
1.30 dlg 206: errno != EOPNOTSUPP) {
207: error("sysctl(KERN_NETLIVELOCKS)");
208: goto exit;
209: }
1.31 ! claudio 210: mcllivelocks_diff = mcllivelocks_cur - mcllivelocks;
! 211: mcllivelocks = mcllivelocks_cur;
1.30 dlg 212:
1.19 canacar 213: num_disp = 0;
214: if (getifaddrs(&ifap)) {
215: error("getifaddrs: %s", strerror(errno));
216: return (1);
217: }
218:
219: nif = 1;
220: for (ifa = ifap; ifa != NULL; ifa = ifa->ifa_next)
221: if (ifa->ifa_addr && ifa->ifa_addr->sa_family == AF_LINK)
222: nif++;
223:
224: if (interfaces == NULL || num_ifs < nif) {
225: size_t len = sizeof(*ifi) * nif;
226: if (nif > SIZE_MAX / sizeof(*ifi)) {
227: error("overflow allocting %u interfaces", nif);
228: goto exit;
229: }
230:
231: ifi = realloc(interfaces, len);
232: if (ifi == NULL) {
233: error("realloc: out of memory allocating %lld bytes",
234: (long long) len);
235: goto exit;
236: }
237:
238: interfaces = ifi;
239: num_ifs = nif;
240: }
241:
242: /* Fill in the "real" interfaces */
243: ifi = interfaces + 1;
244:
245: for (ifa = ifap; ifa != NULL; ifa = ifa->ifa_next) {
246: if (ifa->ifa_addr == NULL ||
247: ifa->ifa_addr->sa_family != AF_LINK)
248: continue;
249:
250: strlcpy(ifi->name, ifa->ifa_name, sizeof(ifi->name));
251:
252: if (ifa->ifa_data)
253: memcpy(&ifi->data, ifa->ifa_data, sizeof(ifi->data));
254: else
255: bzero(&ifi->data, sizeof(ifi->data));
256: ifi++;
257: }
258:
259: /* Fill in the "System" entry from pools */
260: bzero(interfaces, sizeof(interfaces[0]));
261: strlcpy(interfaces[0].name, "System", sizeof(interfaces[0].name));
1.18 canacar 262:
263: mib[0] = CTL_KERN;
1.19 canacar 264: mib[1] = KERN_POOL;
265: mib[2] = KERN_POOL_POOL;
266: mib[3] = mbpool_index;
267: size = sizeof(struct pool);
268:
269: if (sysctl(mib, 4, &mbpool, &size, NULL, 0) < 0) {
1.27 chl 270: error("sysctl(KERN_POOL_POOL, %d)", mib[3]);
1.19 canacar 271: goto exit;
272: }
273:
274: for (i = 0; i < mclpool_count; i++) {
275: struct mclpool *mp = &interfaces[0].data.ifi_mclpool[i];
276:
277: mib[3] = mclpools[i].pool_offset;
278: size = sizeof(struct pool);
1.18 canacar 279:
1.19 canacar 280: if (sysctl(mib, 4, &pool, &size, NULL, 0) < 0) {
281: error("sysctl(KERN_POOL_POOL, %d)", mib[3]);
282: continue;
283: }
284:
285: mp->mcl_alive = pool.pr_nget - pool.pr_nput;
286: mp->mcl_hwm = pool.pr_hiwat;
1.18 canacar 287: }
288:
1.19 canacar 289: num_disp = 1;
290: ret = 0;
1.18 canacar 291:
1.19 canacar 292: for (i = 0; i < num_ifs; i++) {
293: struct if_info *ifi = &interfaces[i];
294: int pnd = num_disp;
295: for (p = 0; p < mclpool_count; p++) {
296: struct mclpool *mp = &ifi->data.ifi_mclpool[p];
297: if (mp->mcl_alive == 0)
298: continue;
299: num_disp++;
300: }
301: if (i && pnd == num_disp)
302: num_disp++;
1.18 canacar 303: }
304:
1.19 canacar 305: exit:
306: freeifaddrs(ifap);
307: return (ret);
1.1 deraadt 308: }
309:
310: void
1.18 canacar 311: print_mb(void)
1.1 deraadt 312: {
1.19 canacar 313: int i, p, n, count = 0;
1.1 deraadt 314:
1.23 kettenis 315: showmbuf(interfaces, -1, 1);
1.19 canacar 316:
317: for (n = i = 0; i < num_ifs; i++) {
318: struct if_info *ifi = &interfaces[i];
319: int pcnt = count;
1.23 kettenis 320: int showif = i;
321:
1.18 canacar 322: if (maxprint > 0 && count >= maxprint)
1.19 canacar 323: return;
1.1 deraadt 324:
1.19 canacar 325: for (p = 0; p < mclpool_count; p++) {
326: struct mclpool *mp = &ifi->data.ifi_mclpool[p];
327: if (mp->mcl_alive == 0)
328: continue;
329: if (n++ >= dispstart) {
1.23 kettenis 330: showmbuf(ifi, p, showif);
331: showif = 0;
1.19 canacar 332: count++;
333: }
334: }
335:
336: if (i && pcnt == count) {
337: /* only print the first line */
338: if (n++ >= dispstart) {
1.23 kettenis 339: showmbuf(ifi, -1, 1);
1.19 canacar 340: count++;
341: }
342: }
1.1 deraadt 343:
1.5 ericj 344:
1.19 canacar 345: }
1.1 deraadt 346: }
347:
1.18 canacar 348:
349: static void
1.23 kettenis 350: showmbuf(struct if_info *ifi, int p, int showif)
1.1 deraadt 351: {
1.23 kettenis 352: if (showif)
1.19 canacar 353: print_fld_str(FLD_MB_IFACE, ifi->name);
354:
355: if (p == -1 && ifi == interfaces) {
1.31 ! claudio 356: print_fld_uint(FLD_MB_LLOCKS, mcllivelocks_diff);
1.19 canacar 357: print_fld_size(FLD_MB_MSIZE, mbpool.pr_size);
358: print_fld_size(FLD_MB_MALIVE, mbpool.pr_nget - mbpool.pr_nput);
359: print_fld_size(FLD_MB_MHWM, mbpool.pr_hiwat);
360: }
361:
362: #if NOTYET
363: print_fld_uint(FLD_MB_RXDELAY, ifi->data.ifi_rxdelay);
364: print_fld_uint(FLD_MB_TXDELAY, ifi->data.ifi_txdelay);
1.29 dlg 365: #endif
1.19 canacar 366:
367: if (p >= 0 && p < mclpool_count) {
368: struct mclpool *mp = &ifi->data.ifi_mclpool[p];
369:
370: print_fld_str(FLD_MB_MSIZE, mclpools[p].title);
371: print_fld_uint(FLD_MB_MALIVE, mp->mcl_alive);
372: if (mp->mcl_lwm)
373: print_fld_size(FLD_MB_MLWM, mp->mcl_lwm);
374: if (mp->mcl_hwm)
375: print_fld_size(FLD_MB_MHWM, mp->mcl_hwm);
1.22 dlg 376: if (mp->mcl_cwm)
377: print_fld_size(FLD_MB_MCWM, mp->mcl_cwm);
1.19 canacar 378: }
1.18 canacar 379:
380: end_line();
1.1 deraadt 381: }
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