4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
9 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
18 #include <sys/socket.h>
19 #include <netinet/in.h>
22 #include <arpa/inet.h>
24 #include <asm/types.h>
25 #include <linux/pkt_sched.h>
32 int get_integer(int *val, const char *arg, int base)
39 res = strtol(arg, &ptr, base);
40 if (!ptr || ptr == arg || *ptr || res > INT_MAX || res < INT_MIN)
46 int mask2bits(__u32 netmask)
49 __u32 mask = ntohl(netmask);
52 /* a valid netmask must be 2^n - 1 */
53 if ((host & (host + 1)) != 0)
56 for (; mask; mask <<= 1)
61 static int get_netmask(unsigned *val, const char *arg, int base)
65 if (!get_unsigned(val, arg, base))
68 /* try coverting dotted quad to CIDR */
69 if (!get_addr_1(&addr, arg, AF_INET) && addr.family == AF_INET) {
70 int b = mask2bits(addr.data[0]);
81 int get_unsigned(unsigned *val, const char *arg, int base)
88 res = strtoul(arg, &ptr, base);
89 if (!ptr || ptr == arg || *ptr || res > UINT_MAX)
96 * get_time_rtt is "translated" from a similar routine "get_time" in
97 * tc_util.c. We don't use the exact same routine because tc passes
98 * microseconds to the kernel and the callers of get_time_rtt want to
99 * pass milliseconds (standard unit for rtt values since 2.6.27), and
100 * have a different assumption for the units of a "raw" number.
102 int get_time_rtt(unsigned *val, const char *arg, int *raw)
108 if (strchr(arg,'.') != NULL) {
114 res = strtoul(arg, &p, 0);
125 if (strcasecmp(p, "s") == 0 || strcasecmp(p, "sec")==0 ||
126 strcasecmp(p, "secs")==0)
128 else if (strcasecmp(p, "ms") == 0 || strcasecmp(p, "msec")==0 ||
129 strcasecmp(p, "msecs") == 0)
130 t *= 1.0; /* allow suffix, do nothing */
135 /* emulate ceil() without having to bring-in -lm and always be >= 1 */
145 int get_u64(__u64 *val, const char *arg, int base)
147 unsigned long long res;
152 res = strtoull(arg, &ptr, base);
153 if (!ptr || ptr == arg || *ptr || res == 0xFFFFFFFFULL)
159 int get_u32(__u32 *val, const char *arg, int base)
166 res = strtoul(arg, &ptr, base);
167 if (!ptr || ptr == arg || *ptr || res > 0xFFFFFFFFUL)
173 int get_u16(__u16 *val, const char *arg, int base)
180 res = strtoul(arg, &ptr, base);
181 if (!ptr || ptr == arg || *ptr || res > 0xFFFF)
187 int get_u8(__u8 *val, const char *arg, int base)
194 res = strtoul(arg, &ptr, base);
195 if (!ptr || ptr == arg || *ptr || res > 0xFF)
201 int get_s16(__s16 *val, const char *arg, int base)
208 res = strtol(arg, &ptr, base);
209 if (!ptr || ptr == arg || *ptr || res > 0x7FFF || res < -0x8000)
215 int get_s8(__s8 *val, const char *arg, int base)
222 res = strtol(arg, &ptr, base);
223 if (!ptr || ptr == arg || *ptr || res > 0x7F || res < -0x80)
229 /* This uses a non-standard parsing (ie not inet_aton, or inet_pton)
230 * because of legacy choice to parse 10.8 as 10.8.0.0 not 10.0.0.8
232 static int get_addr_ipv4(__u8 *ap, const char *cp)
236 for (i = 0; i < 4; i++) {
240 n = strtoul(cp, &endp, 0);
242 return -1; /* bogus network value */
244 if (endp == cp) /* no digits */
252 if (i == 3 || *endp != '.')
253 return -1; /* extra characters */
260 int get_addr_1(inet_prefix *addr, const char *name, int family)
262 memset(addr, 0, sizeof(*addr));
264 if (strcmp(name, "default") == 0 ||
265 strcmp(name, "all") == 0 ||
266 strcmp(name, "any") == 0) {
267 if (family == AF_DECnet)
269 addr->family = family;
270 addr->bytelen = (family == AF_INET6 ? 16 : 4);
275 if (strchr(name, ':')) {
276 addr->family = AF_INET6;
277 if (family != AF_UNSPEC && family != AF_INET6)
279 if (inet_pton(AF_INET6, name, addr->data) <= 0)
286 if (family == AF_DECnet) {
288 addr->family = AF_DECnet;
289 if (dnet_pton(AF_DECnet, name, &dna) <= 0)
291 memcpy(addr->data, dna.a_addr, 2);
297 addr->family = AF_INET;
298 if (family != AF_UNSPEC && family != AF_INET)
301 if (get_addr_ipv4((__u8 *)addr->data, name) <= 0)
309 int get_prefix_1(inet_prefix *dst, char *arg, int family)
315 memset(dst, 0, sizeof(*dst));
317 if (strcmp(arg, "default") == 0 ||
318 strcmp(arg, "any") == 0 ||
319 strcmp(arg, "all") == 0) {
320 if (family == AF_DECnet)
322 dst->family = family;
328 slash = strchr(arg, '/');
332 err = get_addr_1(dst, arg, family);
334 switch(dst->family) {
346 if (get_netmask(&plen, slash+1, 0)
347 || plen > dst->bitlen) {
351 dst->flags |= PREFIXLEN_SPECIFIED;
361 int get_addr(inet_prefix *dst, const char *arg, int family)
363 if (family == AF_PACKET) {
364 fprintf(stderr, "Error: \"%s\" may be inet address, but it is not allowed in this context.\n", arg);
367 if (get_addr_1(dst, arg, family)) {
368 fprintf(stderr, "Error: an inet address is expected rather than \"%s\".\n", arg);
374 int get_prefix(inet_prefix *dst, char *arg, int family)
376 if (family == AF_PACKET) {
377 fprintf(stderr, "Error: \"%s\" may be inet prefix, but it is not allowed in this context.\n", arg);
380 if (get_prefix_1(dst, arg, family)) {
381 fprintf(stderr, "Error: an inet prefix is expected rather than \"%s\".\n", arg);
387 __u32 get_addr32(const char *name)
390 if (get_addr_1(&addr, name, AF_INET)) {
391 fprintf(stderr, "Error: an IP address is expected rather than \"%s\"\n", name);
397 void incomplete_command(void)
399 fprintf(stderr, "Command line is not complete. Try option \"help\"\n");
403 void missarg(const char *key)
405 fprintf(stderr, "Error: argument \"%s\" is required\n", key);
409 void invarg(const char *msg, const char *arg)
411 fprintf(stderr, "Error: argument \"%s\" is wrong: %s\n", arg, msg);
415 void duparg(const char *key, const char *arg)
417 fprintf(stderr, "Error: duplicate \"%s\": \"%s\" is the second value.\n", key, arg);
421 void duparg2(const char *key, const char *arg)
423 fprintf(stderr, "Error: either \"%s\" is duplicate, or \"%s\" is a garbage.\n", key, arg);
427 int matches(const char *cmd, const char *pattern)
429 int len = strlen(cmd);
430 if (len > strlen(pattern))
432 return memcmp(pattern, cmd, len);
435 int inet_addr_match(const inet_prefix *a, const inet_prefix *b, int bits)
437 const __u32 *a1 = a->data;
438 const __u32 *a2 = b->data;
439 int words = bits >> 0x05;
444 if (memcmp(a1, a2, words << 2))
454 mask = htonl((0xffffffff) << (0x20 - bits));
456 if ((w1 ^ w2) & mask)
463 int __iproute2_hz_internal;
472 return atoi(getenv("HZ")) ? : HZ;
474 if (getenv("PROC_NET_PSCHED")) {
475 snprintf(name, sizeof(name)-1, "%s", getenv("PROC_NET_PSCHED"));
476 } else if (getenv("PROC_ROOT")) {
477 snprintf(name, sizeof(name)-1, "%s/net/psched", getenv("PROC_ROOT"));
479 strcpy(name, "/proc/net/psched");
481 fp = fopen(name, "r");
485 if (fscanf(fp, "%*08x%*08x%08x%08x", &nom, &denom) == 2)
495 int __iproute2_user_hz_internal;
497 int __get_user_hz(void)
499 return sysconf(_SC_CLK_TCK);
502 const char *rt_addr_n2a(int af, int len, const void *addr, char *buf, int buflen)
507 return inet_ntop(af, addr, buf, buflen);
509 return ipx_ntop(af, addr, buf, buflen);
512 struct dn_naddr dna = { 2, { 0, 0, }};
513 memcpy(dna.a_addr, addr, 2);
514 return dnet_ntop(af, &dna, buf, buflen);
521 #ifdef RESOLVE_HOSTNAMES
524 struct namerec *next;
530 static struct namerec *nht[NHASH];
532 static const char *resolve_address(const void *addr, int len, int af)
535 struct hostent *h_ent;
540 if (af == AF_INET6 && ((__u32*)addr)[0] == 0 &&
541 ((__u32*)addr)[1] == 0 && ((__u32*)addr)[2] == htonl(0xffff)) {
547 hash = *(__u32 *)(addr + len - 4) % NHASH;
549 for (n = nht[hash]; n; n = n->next) {
550 if (n->addr.family == af &&
551 n->addr.bytelen == len &&
552 memcmp(n->addr.data, addr, len) == 0)
555 if ((n = malloc(sizeof(*n))) == NULL)
558 n->addr.bytelen = len;
560 memcpy(n->addr.data, addr, len);
567 if ((h_ent = gethostbyaddr(addr, len, af)) != NULL)
568 n->name = strdup(h_ent->h_name);
570 /* Even if we fail, "negative" entry is remembered. */
576 const char *format_host(int af, int len, const void *addr,
577 char *buf, int buflen)
579 #ifdef RESOLVE_HOSTNAMES
595 /* I see no reasons why gethostbyname
596 may not work for DECnet */
605 (n = resolve_address(addr, len, af)) != NULL)
609 return rt_addr_n2a(af, len, addr, buf, buflen);
613 char *hexstring_n2a(const __u8 *str, int len, char *buf, int blen)
618 for (i=0; i<len; i++) {
621 sprintf(ptr, "%02x", str[i]);
624 if (i != len-1 && blen > 1) {
632 __u8* hexstring_a2n(const char *str, __u8 *buf, int blen)
642 while ((ch = *str) != ':' && ch != 0) {
643 if (ch >= '0' && ch <= '9')
645 else if (ch >= 'a' && ch <= 'f')
647 else if (ch >= 'A' && ch <= 'F')
666 memset(buf+cnt, 0, blen-cnt);
670 int print_timestamp(FILE *fp)
675 memset(&tv, 0, sizeof(tv));
676 gettimeofday(&tv, NULL);
678 tstr = asctime(localtime(&tv.tv_sec));
679 tstr[strlen(tstr)-1] = 0;
680 fprintf(fp, "Timestamp: %s %lu usec\n", tstr, tv.tv_usec);
686 /* Like glibc getline but handle continuation lines and comments */
687 ssize_t getcmdline(char **linep, size_t *lenp, FILE *in)
692 if ((cc = getline(linep, lenp, in)) < 0)
693 return cc; /* eof or error */
696 cp = strchr(*linep, '#');
700 while ((cp = strstr(*linep, "\\\n")) != NULL) {
705 if ((cc1 = getline(&line1, &len1, in)) < 0) {
706 fprintf(stderr, "Missing continuation line\n");
713 cp = strchr(line1, '#');
717 *lenp = strlen(*linep) + strlen(line1) + 1;
718 *linep = realloc(*linep, *lenp);
720 fprintf(stderr, "Out of memory\n");
725 strcat(*linep, line1);
731 /* split command line into argument vector */
732 int makeargs(char *line, char *argv[], int maxargs)
734 static const char ws[] = " \t\r\n";
738 for (cp = strtok(line, ws); cp; cp = strtok(NULL, ws)) {
739 if (argc >= (maxargs - 1)) {
740 fprintf(stderr, "Too many arguments to command\n");