| /* |
| * tc_util.c Misc TC utility functions. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version |
| * 2 of the License, or (at your option) any later version. |
| * |
| * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> |
| * |
| */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <unistd.h> |
| #include <syslog.h> |
| #include <fcntl.h> |
| #include <sys/socket.h> |
| #include <netinet/in.h> |
| #include <arpa/inet.h> |
| #include <string.h> |
| #include <math.h> |
| |
| #include "utils.h" |
| #include "tc_util.h" |
| |
| int get_qdisc_handle(__u32 *h, const char *str) |
| { |
| __u32 maj; |
| char *p; |
| |
| maj = TC_H_UNSPEC; |
| if (strcmp(str, "none") == 0) |
| goto ok; |
| maj = strtoul(str, &p, 16); |
| if (p == str) |
| return -1; |
| maj <<= 16; |
| if (*p != ':' && *p!=0) |
| return -1; |
| ok: |
| *h = maj; |
| return 0; |
| } |
| |
| int get_tc_classid(__u32 *h, const char *str) |
| { |
| __u32 maj, min; |
| char *p; |
| |
| maj = TC_H_ROOT; |
| if (strcmp(str, "root") == 0) |
| goto ok; |
| maj = TC_H_UNSPEC; |
| if (strcmp(str, "none") == 0) |
| goto ok; |
| maj = strtoul(str, &p, 16); |
| if (p == str) { |
| maj = 0; |
| if (*p != ':') |
| return -1; |
| } |
| if (*p == ':') { |
| maj <<= 16; |
| str = p+1; |
| min = strtoul(str, &p, 16); |
| if (*p != 0) |
| return -1; |
| maj |= min; |
| } else if (*p != 0) |
| return -1; |
| |
| ok: |
| *h = maj; |
| return 0; |
| } |
| |
| int print_tc_classid(char *buf, int len, __u32 h) |
| { |
| if (h == TC_H_ROOT) |
| sprintf(buf, "root"); |
| else if (h == TC_H_UNSPEC) |
| snprintf(buf, len, "none"); |
| else if (TC_H_MAJ(h) == 0) |
| snprintf(buf, len, ":%x", TC_H_MIN(h)); |
| else if (TC_H_MIN(h) == 0) |
| snprintf(buf, len, "%x:", TC_H_MAJ(h)>>16); |
| else |
| snprintf(buf, len, "%x:%x", TC_H_MAJ(h)>>16, TC_H_MIN(h)); |
| return 0; |
| } |
| |
| char * sprint_tc_classid(__u32 h, char *buf) |
| { |
| if (print_tc_classid(buf, SPRINT_BSIZE-1, h)) |
| strcpy(buf, "???"); |
| return buf; |
| } |
| |
| /* See http://physics.nist.gov/cuu/Units/binary.html */ |
| static const struct rate_suffix { |
| const char *name; |
| double scale; |
| } suffixes[] = { |
| { "bit", 1. }, |
| { "Kibit", 1024. }, |
| { "kbit", 1000. }, |
| { "mibit", 1024.*1024. }, |
| { "mbit", 1000000. }, |
| { "gibit", 1024.*1024.*1024. }, |
| { "gbit", 1000000000. }, |
| { "tibit", 1024.*1024.*1024.*1024. }, |
| { "tbit", 1000000000000. }, |
| { "Bps", 8. }, |
| { "KiBps", 8.*1024. }, |
| { "KBps", 8000. }, |
| { "MiBps", 8.*1024*1024. }, |
| { "MBps", 8000000. }, |
| { "GiBps", 8.*1024.*1024.*1024. }, |
| { "GBps", 8000000000. }, |
| { "TiBps", 8.*1024.*1024.*1024.*1024. }, |
| { "TBps", 8000000000000. }, |
| { NULL } |
| }; |
| |
| |
| int get_rate(unsigned *rate, const char *str) |
| { |
| char *p; |
| double bps = strtod(str, &p); |
| const struct rate_suffix *s; |
| |
| if (p == str) |
| return -1; |
| |
| if (*p == '\0') { |
| *rate = bps / 8.; /* assume bytes/sec */ |
| return 0; |
| } |
| |
| for (s = suffixes; s->name; ++s) { |
| if (strcasecmp(s->name, p) == 0) { |
| *rate = (bps * s->scale) / 8.; |
| return 0; |
| } |
| } |
| |
| return -1; |
| } |
| |
| int get_rate_and_cell(unsigned *rate, int *cell_log, char *str) |
| { |
| char * slash = strchr(str, '/'); |
| |
| if (slash) |
| *slash = 0; |
| |
| if (get_rate(rate, str)) |
| return -1; |
| |
| if (slash) { |
| int cell; |
| int i; |
| |
| if (get_integer(&cell, slash+1, 0)) |
| return -1; |
| *slash = '/'; |
| |
| for (i=0; i<32; i++) { |
| if ((1<<i) == cell) { |
| *cell_log = i; |
| return 0; |
| } |
| } |
| return -1; |
| } |
| return 0; |
| } |
| |
| void print_rate(char *buf, int len, __u32 rate) |
| { |
| double tmp = (double)rate*8; |
| extern int use_iec; |
| |
| if (use_iec) { |
| if (tmp >= 1024*1023 && |
| fabs(1024*1024*rint(tmp/(1024*1024)) - tmp) < 1024) |
| snprintf(buf, len, "%gMibit", rint(tmp/(1024*1024))); |
| else if (tmp >= 1024-16 && fabs(1024*rint(tmp/1024) - tmp) < 16) |
| snprintf(buf, len, "%gKibit", rint(tmp/1024)); |
| else |
| snprintf(buf, len, "%ubit", rate); |
| |
| } else { |
| if (tmp >= 999999 && |
| fabs(1000000.*rint(tmp/1000000.) - tmp) < 1000) |
| snprintf(buf, len, "%gMbit", rint(tmp/1000000.)); |
| else if (tmp >= 990 && fabs(1000.*rint(tmp/1000.) - tmp) < 10) |
| snprintf(buf, len, "%gKbit", rint(tmp/1000.)); |
| else |
| snprintf(buf, len, "%ubit", rate); |
| } |
| } |
| |
| char * sprint_rate(__u32 rate, char *buf) |
| { |
| print_rate(buf, SPRINT_BSIZE-1, rate); |
| return buf; |
| } |
| |
| int get_usecs(unsigned *usecs, const char *str) |
| { |
| double t; |
| char *p; |
| |
| t = strtod(str, &p); |
| if (p == str) |
| return -1; |
| |
| if (*p) { |
| if (strcasecmp(p, "s") == 0 || strcasecmp(p, "sec")==0 || |
| strcasecmp(p, "secs")==0) |
| t *= 1000000; |
| else if (strcasecmp(p, "ms") == 0 || strcasecmp(p, "msec")==0 || |
| strcasecmp(p, "msecs") == 0) |
| t *= 1000; |
| else if (strcasecmp(p, "us") == 0 || strcasecmp(p, "usec")==0 || |
| strcasecmp(p, "usecs") == 0) |
| t *= 1; |
| else |
| return -1; |
| } |
| |
| *usecs = t; |
| return 0; |
| } |
| |
| |
| void print_usecs(char *buf, int len, __u32 usec) |
| { |
| double tmp = usec; |
| |
| if (tmp >= 1000000) |
| snprintf(buf, len, "%.1fs", tmp/1000000); |
| else if (tmp >= 1000) |
| snprintf(buf, len, "%.1fms", tmp/1000); |
| else |
| snprintf(buf, len, "%uus", usec); |
| } |
| |
| char * sprint_usecs(__u32 usecs, char *buf) |
| { |
| print_usecs(buf, SPRINT_BSIZE-1, usecs); |
| return buf; |
| } |
| |
| int get_size(unsigned *size, const char *str) |
| { |
| double sz; |
| char *p; |
| |
| sz = strtod(str, &p); |
| if (p == str) |
| return -1; |
| |
| if (*p) { |
| if (strcasecmp(p, "kb") == 0 || strcasecmp(p, "k")==0) |
| sz *= 1024; |
| else if (strcasecmp(p, "gb") == 0 || strcasecmp(p, "g")==0) |
| sz *= 1024*1024*1024; |
| else if (strcasecmp(p, "gbit") == 0) |
| sz *= 1024*1024*1024/8; |
| else if (strcasecmp(p, "mb") == 0 || strcasecmp(p, "m")==0) |
| sz *= 1024*1024; |
| else if (strcasecmp(p, "mbit") == 0) |
| sz *= 1024*1024/8; |
| else if (strcasecmp(p, "kbit") == 0) |
| sz *= 1024/8; |
| else if (strcasecmp(p, "b") != 0) |
| return -1; |
| } |
| |
| *size = sz; |
| return 0; |
| } |
| |
| int get_size_and_cell(unsigned *size, int *cell_log, char *str) |
| { |
| char * slash = strchr(str, '/'); |
| |
| if (slash) |
| *slash = 0; |
| |
| if (get_size(size, str)) |
| return -1; |
| |
| if (slash) { |
| int cell; |
| int i; |
| |
| if (get_integer(&cell, slash+1, 0)) |
| return -1; |
| *slash = '/'; |
| |
| for (i=0; i<32; i++) { |
| if ((1<<i) == cell) { |
| *cell_log = i; |
| return 0; |
| } |
| } |
| return -1; |
| } |
| return 0; |
| } |
| |
| void print_size(char *buf, int len, __u32 sz) |
| { |
| double tmp = sz; |
| |
| if (sz >= 1024*1024 && fabs(1024*1024*rint(tmp/(1024*1024)) - sz) < 1024) |
| snprintf(buf, len, "%gMb", rint(tmp/(1024*1024))); |
| else if (sz >= 1024 && fabs(1024*rint(tmp/1024) - sz) < 16) |
| snprintf(buf, len, "%gKb", rint(tmp/1024)); |
| else |
| snprintf(buf, len, "%ub", sz); |
| } |
| |
| char * sprint_size(__u32 size, char *buf) |
| { |
| print_size(buf, SPRINT_BSIZE-1, size); |
| return buf; |
| } |
| |
| static double percent_scale = (double)(1ull << 32) / 100.; |
| |
| int get_percent(__u32 *percent, const char *str) |
| { |
| char *p; |
| double per = strtod(str, &p); |
| |
| if (per > 100.) |
| return -1; |
| if (*p && strcmp(p, "%")) |
| return -1; |
| |
| *percent = per * percent_scale; |
| return 0; |
| } |
| |
| void print_percent(char *buf, int len, __u32 per) |
| { |
| snprintf(buf, len, "%g%%", (double) per / percent_scale); |
| } |
| |
| char * sprint_percent(__u32 per, char *buf) |
| { |
| print_percent(buf, SPRINT_BSIZE-1, per); |
| return buf; |
| } |
| |
| void print_qdisc_handle(char *buf, int len, __u32 h) |
| { |
| snprintf(buf, len, "%x:", TC_H_MAJ(h)>>16); |
| } |
| |
| char * sprint_qdisc_handle(__u32 h, char *buf) |
| { |
| print_qdisc_handle(buf, SPRINT_BSIZE-1, h); |
| return buf; |
| } |
| |
| char * action_n2a(int action, char *buf, int len) |
| { |
| switch (action) { |
| case -1: |
| return "continue"; |
| break; |
| case TC_ACT_OK: |
| return "pass"; |
| break; |
| case TC_ACT_SHOT: |
| return "drop"; |
| break; |
| case TC_ACT_RECLASSIFY: |
| return "reclassify"; |
| case TC_ACT_PIPE: |
| return "pipe"; |
| case TC_ACT_STOLEN: |
| return "stolen"; |
| default: |
| snprintf(buf, len, "%d", action); |
| return buf; |
| } |
| } |
| |
| int action_a2n(char *arg, int *result) |
| { |
| int res; |
| |
| if (matches(arg, "continue") == 0) |
| res = -1; |
| else if (matches(arg, "drop") == 0) |
| res = TC_ACT_SHOT; |
| else if (matches(arg, "shot") == 0) |
| res = TC_ACT_SHOT; |
| else if (matches(arg, "pass") == 0) |
| res = TC_ACT_OK; |
| else if (strcmp(arg, "ok") == 0) |
| res = TC_ACT_OK; |
| else if (matches(arg, "reclassify") == 0) |
| res = TC_ACT_RECLASSIFY; |
| else { |
| char dummy; |
| if (sscanf(arg, "%d%c", &res, &dummy) != 1) |
| return -1; |
| } |
| *result = res; |
| return 0; |
| } |
| |
| void print_tm(FILE * f, struct tcf_t *tm) |
| { |
| int hz = get_hz(); |
| if (tm->install != 0) |
| fprintf(f, " installed %d sec", tm->install/hz); |
| if (tm->lastuse != 0) |
| fprintf(f, " used %d sec", tm->lastuse/hz); |
| if (tm->expires != 0) |
| fprintf(f, " expires %d sec", tm->expires/hz); |
| } |