Annotation of src/usr.bin/systat/mbufs.c, Revision 1.25
1.25 ! henning 1: /* $OpenBSD: mbufs.c,v 1.24 2009/04/20 20:30:41 chl 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>
1.19 canacar 22: #include <net/if.h>
1.1 deraadt 23:
1.19 canacar 24: #include <err.h>
25: #include <errno.h>
26: #include <ifaddrs.h>
1.1 deraadt 27: #include <stdlib.h>
28: #include <string.h>
1.19 canacar 29:
1.1 deraadt 30: #include "systat.h"
1.18 canacar 31:
32:
1.19 canacar 33: /* pool info for mcl* pools */
34: struct mclpool_info {
35: char title[16];
36: int pool_offset;
37: int size;
38: } mclpools[MCLPOOLS];
39:
40: int mclpool_count = 0;
41: int mbpool_index = -1;
42: struct pool mbpool;
43:
44: /* interfaces */
45: static int num_ifs;
46: struct if_info {
47: char name[16];
48: struct if_data data;
49: } *interfaces = NULL;
50:
1.18 canacar 51: void print_mb(void);
52: int read_mb(void);
53: int select_mb(void);
1.23 kettenis 54: static void showmbuf(struct if_info *, int, int);
1.1 deraadt 55:
56:
1.19 canacar 57: /* Define fields */
58: field_def fields_mbuf[] = {
59: {"IFACE", 8, 16, 1, FLD_ALIGN_LEFT, -1, 0, 0, 0},
60: {"RXDELAY", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0},
61: {"TXDELAY", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0},
1.25 ! henning 62: {"CURTX", 3, 5, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0},
1.19 canacar 63: {"LIVELOCKS", 5, 10, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0},
64: {"SIZE", 3, 5, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0},
65: {"ALIVE", 3, 5, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0},
66: {"LWM", 3, 5, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0},
67: {"HWM", 3, 5, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0},
1.22 dlg 68: {"CWM", 3, 5, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0},
1.1 deraadt 69: };
70:
71:
1.19 canacar 72: #define FIELD_ADDR(x) (&fields_mbuf[x])
1.18 canacar 73:
1.19 canacar 74: #define FLD_MB_IFACE FIELD_ADDR(0)
75: #define FLD_MB_RXDELAY FIELD_ADDR(1)
76: #define FLD_MB_TXDELAY FIELD_ADDR(2)
1.25 ! henning 77: #define FLD_MB_CURTX FIELD_ADDR(3)
! 78: #define FLD_MB_LLOCKS FIELD_ADDR(4)
! 79: #define FLD_MB_MSIZE FIELD_ADDR(5)
! 80: #define FLD_MB_MALIVE FIELD_ADDR(6)
! 81: #define FLD_MB_MLWM FIELD_ADDR(7)
! 82: #define FLD_MB_MHWM FIELD_ADDR(8)
! 83: #define FLD_MB_MCWM FIELD_ADDR(9)
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
1.25 ! henning 92: FLD_MB_CURTX, FLD_MB_LLOCKS, FLD_MB_MSIZE, FLD_MB_MALIVE, FLD_MB_MLWM,
! 93: FLD_MB_MHWM, 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:
202: num_disp = 0;
203: if (getifaddrs(&ifap)) {
204: error("getifaddrs: %s", strerror(errno));
205: return (1);
206: }
207:
208: nif = 1;
209: for (ifa = ifap; ifa != NULL; ifa = ifa->ifa_next)
210: if (ifa->ifa_addr && ifa->ifa_addr->sa_family == AF_LINK)
211: nif++;
212:
213: if (interfaces == NULL || num_ifs < nif) {
214: size_t len = sizeof(*ifi) * nif;
215: if (nif > SIZE_MAX / sizeof(*ifi)) {
216: error("overflow allocting %u interfaces", nif);
217: goto exit;
218: }
219:
220: ifi = realloc(interfaces, len);
221: if (ifi == NULL) {
222: error("realloc: out of memory allocating %lld bytes",
223: (long long) len);
224: goto exit;
225: }
226:
227: interfaces = ifi;
228: num_ifs = nif;
229: }
230:
231: /* Fill in the "real" interfaces */
232: ifi = interfaces + 1;
233:
234: for (ifa = ifap; ifa != NULL; ifa = ifa->ifa_next) {
235: if (ifa->ifa_addr == NULL ||
236: ifa->ifa_addr->sa_family != AF_LINK)
237: continue;
238:
239: strlcpy(ifi->name, ifa->ifa_name, sizeof(ifi->name));
240:
241: if (ifa->ifa_data)
242: memcpy(&ifi->data, ifa->ifa_data, sizeof(ifi->data));
243: else
244: bzero(&ifi->data, sizeof(ifi->data));
245: ifi++;
246: }
247:
248: /* Fill in the "System" entry from pools */
249: bzero(interfaces, sizeof(interfaces[0]));
250: strlcpy(interfaces[0].name, "System", sizeof(interfaces[0].name));
1.18 canacar 251:
252: mib[0] = CTL_KERN;
1.19 canacar 253: mib[1] = KERN_POOL;
254: mib[2] = KERN_POOL_POOL;
255: mib[3] = mbpool_index;
256: size = sizeof(struct pool);
257:
258: if (sysctl(mib, 4, &mbpool, &size, NULL, 0) < 0) {
259: error("sysctl(KERN_POOL_POOL, %d)", i);
260: goto exit;
261: }
262:
263: for (i = 0; i < mclpool_count; i++) {
264: struct mclpool *mp = &interfaces[0].data.ifi_mclpool[i];
265:
266: mib[3] = mclpools[i].pool_offset;
267: size = sizeof(struct pool);
1.18 canacar 268:
1.19 canacar 269: if (sysctl(mib, 4, &pool, &size, NULL, 0) < 0) {
270: error("sysctl(KERN_POOL_POOL, %d)", mib[3]);
271: continue;
272: }
273:
274: mp->mcl_alive = pool.pr_nget - pool.pr_nput;
275: mp->mcl_hwm = pool.pr_hiwat;
1.18 canacar 276: }
277:
1.19 canacar 278: num_disp = 1;
279: ret = 0;
1.18 canacar 280:
1.19 canacar 281: for (i = 0; i < num_ifs; i++) {
282: struct if_info *ifi = &interfaces[i];
283: int pnd = num_disp;
284: for (p = 0; p < mclpool_count; p++) {
285: struct mclpool *mp = &ifi->data.ifi_mclpool[p];
286: if (mp->mcl_alive == 0)
287: continue;
288: num_disp++;
289: }
290: if (i && pnd == num_disp)
291: num_disp++;
1.18 canacar 292: }
293:
1.19 canacar 294: exit:
295: freeifaddrs(ifap);
296: return (ret);
1.1 deraadt 297: }
298:
299: void
1.18 canacar 300: print_mb(void)
1.1 deraadt 301: {
1.19 canacar 302: int i, p, n, count = 0;
1.1 deraadt 303:
1.23 kettenis 304: showmbuf(interfaces, -1, 1);
1.19 canacar 305:
306: for (n = i = 0; i < num_ifs; i++) {
307: struct if_info *ifi = &interfaces[i];
308: int pcnt = count;
1.23 kettenis 309: int showif = i;
310:
1.18 canacar 311: if (maxprint > 0 && count >= maxprint)
1.19 canacar 312: return;
1.1 deraadt 313:
1.19 canacar 314: for (p = 0; p < mclpool_count; p++) {
315: struct mclpool *mp = &ifi->data.ifi_mclpool[p];
316: if (mp->mcl_alive == 0)
317: continue;
318: if (n++ >= dispstart) {
1.23 kettenis 319: showmbuf(ifi, p, showif);
320: showif = 0;
1.19 canacar 321: count++;
322: }
323: }
324:
325: if (i && pcnt == count) {
326: /* only print the first line */
327: if (n++ >= dispstart) {
1.23 kettenis 328: showmbuf(ifi, -1, 1);
1.19 canacar 329: count++;
330: }
331: }
1.1 deraadt 332:
1.5 ericj 333:
1.19 canacar 334: }
1.1 deraadt 335: }
336:
1.18 canacar 337:
338: static void
1.23 kettenis 339: showmbuf(struct if_info *ifi, int p, int showif)
1.1 deraadt 340: {
1.23 kettenis 341: if (showif)
1.19 canacar 342: print_fld_str(FLD_MB_IFACE, ifi->name);
343:
344: if (p == -1 && ifi == interfaces) {
345: print_fld_size(FLD_MB_MSIZE, mbpool.pr_size);
346: print_fld_size(FLD_MB_MALIVE, mbpool.pr_nget - mbpool.pr_nput);
347: print_fld_size(FLD_MB_MHWM, mbpool.pr_hiwat);
348: }
1.25 ! henning 349: if (showif && p != -1)
! 350: print_fld_uint(FLD_MB_CURTX, ifi->data.ifi_maxtx);
1.19 canacar 351:
352: #if NOTYET
353: print_fld_uint(FLD_MB_RXDELAY, ifi->data.ifi_rxdelay);
354: print_fld_uint(FLD_MB_TXDELAY, ifi->data.ifi_txdelay);
355: #endif
1.20 canacar 356: if (ifi->data.ifi_livelocks)
357: print_fld_size(FLD_MB_LLOCKS, ifi->data.ifi_livelocks);
1.19 canacar 358:
359: if (p >= 0 && p < mclpool_count) {
360: struct mclpool *mp = &ifi->data.ifi_mclpool[p];
361:
362: print_fld_str(FLD_MB_MSIZE, mclpools[p].title);
363: print_fld_uint(FLD_MB_MALIVE, mp->mcl_alive);
364: if (mp->mcl_lwm)
365: print_fld_size(FLD_MB_MLWM, mp->mcl_lwm);
366: if (mp->mcl_hwm)
367: print_fld_size(FLD_MB_MHWM, mp->mcl_hwm);
1.22 dlg 368: if (mp->mcl_cwm)
369: print_fld_size(FLD_MB_MCWM, mp->mcl_cwm);
1.19 canacar 370: }
1.18 canacar 371:
372: end_line();
1.1 deraadt 373: }
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