2 * Copyright (c) 2003, Trent Nelson, <trent@arpa.com>.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTIFSTAT_ERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * $FreeBSD: src/usr.bin/systat/ifstat.c,v 1.7 2008/01/12 00:11:26 delphij Exp $
31 #include <sys/types.h>
32 #include <sys/socket.h>
33 #include <sys/sysctl.h>
35 #include <net/if_mib.h>
49 #define C1 0 /* 0-19 */
50 #define C2 20 /* 20-39 */
51 #define C3 40 /* 40-59 */
52 #define C4 60 /* 60-80 */
53 #define C5 80 /* Used for label positioning. */
55 static const int col0 = 0;
56 static const int col1 = C1;
57 static const int col2 = C2;
58 static const int col3 = C3;
59 static const int col4 = C4;
60 static const int col5 = C5;
63 static SLIST_HEAD(, if_stat) curlist;
66 SLIST_ENTRY(if_stat) link;
67 char if_name[IF_NAMESIZE];
68 struct ifmibdata if_mib;
70 struct timeval tv_lastchanged;
71 u_long if_in_curtraffic;
72 u_long if_out_curtraffic;
73 u_long if_in_traffic_peak;
74 u_long if_out_traffic_peak;
75 u_int if_row; /* Index into ifmib sysctl */
76 u_int if_ypos; /* 0 if not being displayed */
80 extern u_int curscale;
82 static void right_align_string(struct if_stat *);
83 static void getifmibdata(const int, struct ifmibdata *);
84 static void sort_interface_list(void);
85 static u_int getifnum(void);
87 #define IFSTAT_ERR(n, s) do { \
93 #define STARTING_ROW (8)
94 #define ROW_SPACING (3)
98 " Interface Traffic Peak Total"
100 #define CLEAR_LINE(y, x) do { \
105 #define IN_col2 (ifp->if_in_curtraffic)
106 #define OUT_col2 (ifp->if_out_curtraffic)
107 #define IN_col3 (ifp->if_in_traffic_peak)
108 #define OUT_col3 (ifp->if_out_traffic_peak)
109 #define IN_col4 (ifp->if_mib.ifmd_data.ifi_ibytes)
110 #define OUT_col4 (ifp->if_mib.ifmd_data.ifi_obytes)
112 #define EMPTY_COLUMN " "
113 #define CLEAR_COLUMN(y, x) mvprintw((y), (x), "%20s", EMPTY_COLUMN);
115 #define DOPUTRATE(c, r, d) do { \
116 CLEAR_COLUMN(r, c); \
117 mvprintw(r, (c), "%10.3f %s%s ", \
118 convert(d##_##c, curscale), \
119 get_string(d##_##c, curscale), \
123 #define DOPUTTOTAL(c, r, d) do { \
124 CLEAR_COLUMN((r), (c)); \
125 mvprintw((r), (c), "%12.3f %s ", \
126 convert(d##_##c, SC_AUTOBYTE), \
127 get_string(d##_##c, SC_AUTOBYTE)); \
130 #define PUTRATE(c, r) do { \
131 DOPUTRATE(c, (r), IN); \
132 DOPUTRATE(c, (r)+1, OUT); \
135 #define PUTTOTAL(c, r) do { \
136 DOPUTTOTAL(c, (r), IN); \
137 DOPUTTOTAL(c, (r)+1, OUT); \
140 #define PUTNAME(p) do { \
141 mvprintw(p->if_ypos, 0, "%s", p->if_name); \
142 mvprintw(p->if_ypos, col2-3, "%s", (const char *)"in"); \
143 mvprintw(p->if_ypos+1, col2-3, "%s", (const char *)"out"); \
150 struct if_stat *p = NULL;
153 n = getifnum(); /* NOTE: can return < 0 */
155 SLIST_INIT(&curlist);
156 for (i = 0; i < n; i++) {
157 p = (struct if_stat *)calloc(1, sizeof(struct if_stat));
159 IFSTAT_ERR(1, "out of memory");
160 SLIST_INSERT_HEAD(&curlist, p, link);
162 getifmibdata(p->if_row, &p->if_mib);
163 right_align_string(p);
166 * Initially, we only display interfaces that have
167 * received some traffic.
169 if (p->if_mib.ifmd_data.ifi_ibytes != 0)
173 sort_interface_list();
175 return (subwin(stdscr, LINES-1-5, 0, 5, 0));
179 closeifstat(WINDOW *w)
181 struct if_stat *node = NULL;
183 while (!SLIST_EMPTY(&curlist)) {
184 node = SLIST_FIRST(&curlist);
185 SLIST_REMOVE_HEAD(&curlist, link);
203 wmove(wnd, TOPLINE, 0);
205 mvprintw(TOPLINE, 0, "%s", TOPLABEL);
213 struct if_stat *ifp = NULL;
214 SLIST_FOREACH(ifp, &curlist, link) {
215 if (ifp->display == 0)
218 PUTRATE(col2, ifp->if_ypos);
219 PUTRATE(col3, ifp->if_ypos);
220 PUTTOTAL(col4, ifp->if_ypos);
235 struct if_stat *ifp = NULL;
236 struct timeval tv, new_tv, old_tv;
237 double elapsed = 0.0;
238 u_int new_inb, new_outb, old_inb, old_outb = 0;
239 u_int we_need_to_sort_interface_list = 0;
241 SLIST_FOREACH(ifp, &curlist, link) {
243 * Grab a copy of the old input/output values before we
244 * call getifmibdata().
246 old_inb = ifp->if_mib.ifmd_data.ifi_ibytes;
247 old_outb = ifp->if_mib.ifmd_data.ifi_obytes;
248 ifp->tv_lastchanged = ifp->if_mib.ifmd_data.ifi_lastchange;
250 if (gettimeofday(&new_tv, NULL) != 0)
251 IFSTAT_ERR(2, "error getting time of day");
252 (void)getifmibdata(ifp->if_row, &ifp->if_mib);
255 new_inb = ifp->if_mib.ifmd_data.ifi_ibytes;
256 new_outb = ifp->if_mib.ifmd_data.ifi_obytes;
258 /* Display interface if it's received some traffic. */
259 if (new_inb > 0 && old_inb == 0) {
261 we_need_to_sort_interface_list++;
265 * The rest is pretty trivial. Calculate the new values
266 * for our current traffic rates, and while we're there,
267 * see if we have new peak rates.
270 timersub(&new_tv, &old_tv, &tv);
271 elapsed = tv.tv_sec + (tv.tv_usec * 1e-6);
273 ifp->if_in_curtraffic = new_inb - old_inb;
274 ifp->if_out_curtraffic = new_outb - old_outb;
277 * Rather than divide by the time specified on the comm-
278 * and line, we divide by ``elapsed'' as this is likely
279 * to be more accurate.
281 ifp->if_in_curtraffic /= elapsed;
282 ifp->if_out_curtraffic /= elapsed;
284 if (ifp->if_in_curtraffic > ifp->if_in_traffic_peak)
285 ifp->if_in_traffic_peak = ifp->if_in_curtraffic;
287 if (ifp->if_out_curtraffic > ifp->if_out_traffic_peak)
288 ifp->if_out_traffic_peak = ifp->if_out_curtraffic;
290 ifp->tv.tv_sec = new_tv.tv_sec;
291 ifp->tv.tv_usec = new_tv.tv_usec;
295 if (we_need_to_sort_interface_list)
296 sort_interface_list();
302 * We want to right justify our interface names against the first column
303 * (first sixteen or so characters), so we need to do some alignment.
306 right_align_string(struct if_stat *ifp)
308 int str_len = 0, pad_len = 0;
309 char *newstr = NULL, *ptr = NULL;
311 if (ifp == NULL || ifp->if_mib.ifmd_name == NULL)
314 /* string length + '\0' */
315 str_len = strlen(ifp->if_mib.ifmd_name)+1;
316 pad_len = IF_NAMESIZE-(str_len);
318 newstr = ifp->if_name;
319 ptr = newstr + pad_len;
320 (void)memset((void *)newstr, (int)' ', IF_NAMESIZE);
321 (void)strncpy(ptr, (const char *)&ifp->if_mib.ifmd_name,
329 * This function iterates through our list of interfaces, identifying
330 * those that are to be displayed (ifp->display = 1). For each interf-
331 * rface that we're displaying, we generate an appropriate position for
332 * it on the screen (ifp->if_ypos).
334 * This function is called any time a change is made to an interface's
338 sort_interface_list(void)
340 struct if_stat *ifp = NULL;
344 SLIST_FOREACH(ifp, &curlist, link) {
358 static int name[] = { CTL_NET,
364 datalen = sizeof(data);
365 if (sysctl(name, 5, (void *)&data, (size_t *)&datalen, NULL,
367 IFSTAT_ERR(1, "sysctl error");
372 getifmibdata(int row, struct ifmibdata *data)
375 static int name[] = { CTL_NET,
381 datalen = sizeof(*data);
384 if ((sysctl(name, 6, (void *)data, (size_t *)&datalen, NULL,
385 (size_t)0) != 0) && (errno != ENOENT))
386 IFSTAT_ERR(2, "sysctl error getting interface data");
390 cmdifstat(const char *cmd, char *args)
394 retval = ifcmd(cmd, args);
395 /* ifcmd() returns 1 on success */