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>
20 #include <sys/socket.h>
21 #include <netinet/in.h>
24 #include <arpa/inet.h>
25 #include <asm/types.h>
26 #include <linux/pkt_sched.h>
27 #include <linux/param.h>
28 #include <linux/if_arp.h>
29 #include <linux/mpls.h>
36 #include "namespace.h"
38 int timestamp_short
= 0;
40 int get_integer(int *val
, const char *arg
, int base
)
48 res
= strtol(arg
, &ptr
, base
);
50 /* If there were no digits at all, strtol() stores
51 * the original value of nptr in *endptr (and returns 0).
52 * In particular, if *nptr is not '\0' but **endptr is '\0' on return,
53 * the entire string is valid.
55 if (!ptr
|| ptr
== arg
|| *ptr
)
58 /* If an underflow occurs, strtol() returns LONG_MIN.
59 * If an overflow occurs, strtol() returns LONG_MAX.
60 * In both cases, errno is set to ERANGE.
62 if ((res
== LONG_MAX
|| res
== LONG_MIN
) && errno
== ERANGE
)
65 /* Outside range of int */
66 if (res
< INT_MIN
|| res
> INT_MAX
)
73 int mask2bits(__u32 netmask
)
76 __u32 mask
= ntohl(netmask
);
79 /* a valid netmask must be 2^n - 1 */
80 if ((host
& (host
+ 1)) != 0)
83 for (; mask
; mask
<<= 1)
88 static int get_netmask(unsigned *val
, const char *arg
, int base
)
92 if (!get_unsigned(val
, arg
, base
))
95 /* try coverting dotted quad to CIDR */
96 if (!get_addr_1(&addr
, arg
, AF_INET
) && addr
.family
== AF_INET
) {
97 int b
= mask2bits(addr
.data
[0]);
108 int get_unsigned(unsigned *val
, const char *arg
, int base
)
116 res
= strtoul(arg
, &ptr
, base
);
118 /* empty string or trailing non-digits */
119 if (!ptr
|| ptr
== arg
|| *ptr
)
123 if (res
== ULONG_MAX
&& errno
== ERANGE
)
126 /* out side range of unsigned */
135 * get_time_rtt is "translated" from a similar routine "get_time" in
136 * tc_util.c. We don't use the exact same routine because tc passes
137 * microseconds to the kernel and the callers of get_time_rtt want to
138 * pass milliseconds (standard unit for rtt values since 2.6.27), and
139 * have a different assumption for the units of a "raw" number.
141 int get_time_rtt(unsigned *val
, const char *arg
, int *raw
)
147 if (strchr(arg
, '.') != NULL
) {
157 if ((t
== HUGE_VALF
|| t
== HUGE_VALL
) && errno
== ERANGE
)
160 res
= strtoul(arg
, &p
, 0);
167 if (res
== ULONG_MAX
&& errno
== ERANGE
)
179 if (strcasecmp(p
, "s") == 0 || strcasecmp(p
, "sec")==0 ||
180 strcasecmp(p
, "secs")==0)
182 else if (strcasecmp(p
, "ms") == 0 || strcasecmp(p
, "msec")==0 ||
183 strcasecmp(p
, "msecs") == 0)
184 t
*= 1.0; /* allow suffix, do nothing */
189 /* emulate ceil() without having to bring-in -lm and always be >= 1 */
199 int get_u64(__u64
*val
, const char *arg
, int base
)
201 unsigned long long res
;
207 res
= strtoull(arg
, &ptr
, base
);
209 /* empty string or trailing non-digits */
210 if (!ptr
|| ptr
== arg
|| *ptr
)
214 if (res
== ULLONG_MAX
&& errno
== ERANGE
)
217 /* in case ULL is 128 bits */
218 if (res
> 0xFFFFFFFFFFFFFFFFULL
)
225 int get_u32(__u32
*val
, const char *arg
, int base
)
232 res
= strtoul(arg
, &ptr
, base
);
234 /* empty string or trailing non-digits */
235 if (!ptr
|| ptr
== arg
|| *ptr
)
239 if (res
== ULONG_MAX
&& errno
== ERANGE
)
242 /* in case UL > 32 bits */
243 if (res
> 0xFFFFFFFFUL
)
250 int get_u16(__u16
*val
, const char *arg
, int base
)
257 res
= strtoul(arg
, &ptr
, base
);
259 /* empty string or trailing non-digits */
260 if (!ptr
|| ptr
== arg
|| *ptr
)
264 if (res
== ULONG_MAX
&& errno
== ERANGE
)
274 int get_u8(__u8
*val
, const char *arg
, int base
)
282 res
= strtoul(arg
, &ptr
, base
);
283 /* empty string or trailing non-digits */
284 if (!ptr
|| ptr
== arg
|| *ptr
)
288 if (res
== ULONG_MAX
&& errno
== ERANGE
)
298 int get_s32(__s32
*val
, const char *arg
, int base
)
307 res
= strtol(arg
, &ptr
, base
);
308 if (!ptr
|| ptr
== arg
|| *ptr
)
310 if ((res
== LONG_MIN
|| res
== LONG_MAX
) && errno
== ERANGE
)
312 if (res
> INT32_MAX
|| res
< INT32_MIN
)
319 int get_s16(__s16
*val
, const char *arg
, int base
)
326 res
= strtol(arg
, &ptr
, base
);
327 if (!ptr
|| ptr
== arg
|| *ptr
)
329 if ((res
== LONG_MIN
|| res
== LONG_MAX
) && errno
== ERANGE
)
331 if (res
> 0x7FFF || res
< -0x8000)
338 int get_s8(__s8
*val
, const char *arg
, int base
)
345 res
= strtol(arg
, &ptr
, base
);
346 if (!ptr
|| ptr
== arg
|| *ptr
)
348 if ((res
== LONG_MIN
|| res
== LONG_MAX
) && errno
== ERANGE
)
350 if (res
> 0x7F || res
< -0x80)
356 /* This uses a non-standard parsing (ie not inet_aton, or inet_pton)
357 * because of legacy choice to parse 10.8 as 10.8.0.0 not 10.0.0.8
359 static int get_addr_ipv4(__u8
*ap
, const char *cp
)
363 for (i
= 0; i
< 4; i
++) {
367 n
= strtoul(cp
, &endp
, 0);
369 return -1; /* bogus network value */
371 if (endp
== cp
) /* no digits */
379 if (i
== 3 || *endp
!= '.')
380 return -1; /* extra characters */
387 int get_addr64(__u64
*ap
, const char *cp
)
396 for (i
= 0; i
< 4; i
++) {
400 n
= strtoul(cp
, &endp
, 16);
402 return -1; /* bogus network value */
404 if (endp
== cp
) /* no digits */
407 val
.v16
[i
] = htons(n
);
412 if (i
== 3 || *endp
!= ':')
413 return -1; /* extra characters */
422 int get_addr_1(inet_prefix
*addr
, const char *name
, int family
)
424 memset(addr
, 0, sizeof(*addr
));
426 if (strcmp(name
, "default") == 0 ||
427 strcmp(name
, "all") == 0 ||
428 strcmp(name
, "any") == 0) {
429 if ((family
== AF_DECnet
) || (family
== AF_MPLS
))
431 addr
->family
= family
;
432 addr
->bytelen
= (family
== AF_INET6
? 16 : 4);
437 if (family
== AF_PACKET
) {
439 len
= ll_addr_a2n((char *)&addr
->data
, sizeof(addr
->data
), name
);
443 addr
->family
= AF_PACKET
;
445 addr
->bitlen
= len
* 8;
449 if (strchr(name
, ':')) {
450 addr
->family
= AF_INET6
;
451 if (family
!= AF_UNSPEC
&& family
!= AF_INET6
)
453 if (inet_pton(AF_INET6
, name
, addr
->data
) <= 0)
460 if (family
== AF_DECnet
) {
462 addr
->family
= AF_DECnet
;
463 if (dnet_pton(AF_DECnet
, name
, &dna
) <= 0)
465 memcpy(addr
->data
, dna
.a_addr
, 2);
471 if (family
== AF_MPLS
) {
473 addr
->family
= AF_MPLS
;
474 if (mpls_pton(AF_MPLS
, name
, addr
->data
) <= 0)
478 /* How many bytes do I need? */
479 for (i
= 0; i
< 8; i
++) {
480 if (ntohl(addr
->data
[i
]) & MPLS_LS_S_MASK
) {
481 addr
->bytelen
= (i
+ 1)*4;
488 addr
->family
= AF_INET
;
489 if (family
!= AF_UNSPEC
&& family
!= AF_INET
)
492 if (get_addr_ipv4((__u8
*)addr
->data
, name
) <= 0)
500 int af_bit_len(int af
)
518 int af_byte_len(int af
)
520 return af_bit_len(af
) / 8;
523 int get_prefix_1(inet_prefix
*dst
, char *arg
, int family
)
529 memset(dst
, 0, sizeof(*dst
));
531 if (strcmp(arg
, "default") == 0 ||
532 strcmp(arg
, "any") == 0 ||
533 strcmp(arg
, "all") == 0) {
534 if ((family
== AF_DECnet
) || (family
== AF_MPLS
))
536 dst
->family
= family
;
542 slash
= strchr(arg
, '/');
546 err
= get_addr_1(dst
, arg
, family
);
548 dst
->bitlen
= af_bit_len(dst
->family
);
551 if (get_netmask(&plen
, slash
+1, 0)
552 || plen
> dst
->bitlen
) {
556 dst
->flags
|= PREFIXLEN_SPECIFIED
;
566 int get_addr(inet_prefix
*dst
, const char *arg
, int family
)
568 if (get_addr_1(dst
, arg
, family
)) {
569 fprintf(stderr
, "Error: %s address is expected rather than \"%s\".\n",
570 family_name(dst
->family
) ,arg
);
576 int get_prefix(inet_prefix
*dst
, char *arg
, int family
)
578 if (family
== AF_PACKET
) {
579 fprintf(stderr
, "Error: \"%s\" may be inet prefix, but it is not allowed in this context.\n", arg
);
583 if (get_prefix_1(dst
, arg
, family
)) {
584 fprintf(stderr
, "Error: %s prefix is expected rather than \"%s\".\n",
585 family_name(dst
->family
) ,arg
);
591 __u32
get_addr32(const char *name
)
594 if (get_addr_1(&addr
, name
, AF_INET
)) {
595 fprintf(stderr
, "Error: an IP address is expected rather than \"%s\"\n", name
);
601 void incomplete_command(void)
603 fprintf(stderr
, "Command line is not complete. Try option \"help\"\n");
607 void missarg(const char *key
)
609 fprintf(stderr
, "Error: argument \"%s\" is required\n", key
);
613 void invarg(const char *msg
, const char *arg
)
615 fprintf(stderr
, "Error: argument \"%s\" is wrong: %s\n", arg
, msg
);
619 void duparg(const char *key
, const char *arg
)
621 fprintf(stderr
, "Error: duplicate \"%s\": \"%s\" is the second value.\n", key
, arg
);
625 void duparg2(const char *key
, const char *arg
)
627 fprintf(stderr
, "Error: either \"%s\" is duplicate, or \"%s\" is a garbage.\n", key
, arg
);
631 int matches(const char *cmd
, const char *pattern
)
633 int len
= strlen(cmd
);
634 if (len
> strlen(pattern
))
636 return memcmp(pattern
, cmd
, len
);
639 int inet_addr_match(const inet_prefix
*a
, const inet_prefix
*b
, int bits
)
641 const __u32
*a1
= a
->data
;
642 const __u32
*a2
= b
->data
;
643 int words
= bits
>> 0x05;
648 if (memcmp(a1
, a2
, words
<< 2))
658 mask
= htonl((0xffffffff) << (0x20 - bits
));
660 if ((w1
^ w2
) & mask
)
667 int __iproute2_hz_internal
;
676 return atoi(getenv("HZ")) ? : HZ
;
678 if (getenv("PROC_NET_PSCHED")) {
679 snprintf(name
, sizeof(name
)-1, "%s", getenv("PROC_NET_PSCHED"));
680 } else if (getenv("PROC_ROOT")) {
681 snprintf(name
, sizeof(name
)-1, "%s/net/psched", getenv("PROC_ROOT"));
683 strcpy(name
, "/proc/net/psched");
685 fp
= fopen(name
, "r");
689 if (fscanf(fp
, "%*08x%*08x%08x%08x", &nom
, &denom
) == 2)
699 int __iproute2_user_hz_internal
;
701 int __get_user_hz(void)
703 return sysconf(_SC_CLK_TCK
);
706 const char *rt_addr_n2a_r(int af
, int len
, const void *addr
, char *buf
, int buflen
)
711 return inet_ntop(af
, addr
, buf
, buflen
);
713 return mpls_ntop(af
, addr
, buf
, buflen
);
715 return ipx_ntop(af
, addr
, buf
, buflen
);
718 struct dn_naddr dna
= { 2, { 0, 0, }};
719 memcpy(dna
.a_addr
, addr
, 2);
720 return dnet_ntop(af
, &dna
, buf
, buflen
);
723 return ll_addr_n2a(addr
, len
, ARPHRD_VOID
, buf
, buflen
);
729 const char *rt_addr_n2a(int af
, int len
, const void *addr
)
731 static char buf
[256];
733 return rt_addr_n2a_r(af
, len
, addr
, buf
, 256);
736 int read_family(const char *name
)
738 int family
= AF_UNSPEC
;
739 if (strcmp(name
, "inet") == 0)
741 else if (strcmp(name
, "inet6") == 0)
743 else if (strcmp(name
, "dnet") == 0)
745 else if (strcmp(name
, "link") == 0)
747 else if (strcmp(name
, "ipx") == 0)
749 else if (strcmp(name
, "mpls") == 0)
751 else if (strcmp(name
, "bridge") == 0)
756 const char *family_name(int family
)
758 if (family
== AF_INET
)
760 if (family
== AF_INET6
)
762 if (family
== AF_DECnet
)
764 if (family
== AF_PACKET
)
766 if (family
== AF_IPX
)
768 if (family
== AF_MPLS
)
770 if (family
== AF_BRIDGE
)
775 #ifdef RESOLVE_HOSTNAMES
778 struct namerec
*next
;
784 static struct namerec
*nht
[NHASH
];
786 static const char *resolve_address(const void *addr
, int len
, int af
)
789 struct hostent
*h_ent
;
794 if (af
== AF_INET6
&& ((__u32
*)addr
)[0] == 0 &&
795 ((__u32
*)addr
)[1] == 0 && ((__u32
*)addr
)[2] == htonl(0xffff)) {
801 hash
= *(__u32
*)(addr
+ len
- 4) % NHASH
;
803 for (n
= nht
[hash
]; n
; n
= n
->next
) {
804 if (n
->addr
.family
== af
&&
805 n
->addr
.bytelen
== len
&&
806 memcmp(n
->addr
.data
, addr
, len
) == 0)
809 if ((n
= malloc(sizeof(*n
))) == NULL
)
812 n
->addr
.bytelen
= len
;
814 memcpy(n
->addr
.data
, addr
, len
);
821 if ((h_ent
= gethostbyaddr(addr
, len
, af
)) != NULL
)
822 n
->name
= strdup(h_ent
->h_name
);
824 /* Even if we fail, "negative" entry is remembered. */
829 const char *format_host_r(int af
, int len
, const void *addr
,
830 char *buf
, int buflen
)
832 #ifdef RESOLVE_HOSTNAMES
836 len
= len
<= 0 ? af_byte_len(af
) : len
;
839 (n
= resolve_address(addr
, len
, af
)) != NULL
)
843 return rt_addr_n2a_r(af
, len
, addr
, buf
, buflen
);
846 const char *format_host(int af
, int len
, const void *addr
)
848 static char buf
[256];
850 return format_host_r(af
, len
, addr
, buf
, 256);
854 char *hexstring_n2a(const __u8
*str
, int len
, char *buf
, int blen
)
859 for (i
=0; i
<len
; i
++) {
862 sprintf(ptr
, "%02x", str
[i
]);
869 __u8
* hexstring_a2n(const char *str
, __u8
*buf
, int blen
)
876 while (cnt
< blen
&& strlen(str
) > 1) {
880 strncpy(tmpstr
, str
, 2);
882 tmp
= strtoul(tmpstr
, &endptr
, 16);
883 if (errno
!= 0 || tmp
> 0xFF || *endptr
!= '\0')
891 int addr64_n2a(__u64 addr
, char *buff
, size_t len
)
893 __u16
*words
= (__u16
*)&addr
;
899 for (i
= 0; i
< 4; i
++) {
905 ret
= snprintf(&buff
[written
], len
- written
, "%x%s", v
, sep
);
915 int print_timestamp(FILE *fp
)
920 gettimeofday(&tv
, NULL
);
921 tm
= localtime(&tv
.tv_sec
);
923 if (timestamp_short
) {
926 strftime(tshort
, sizeof(tshort
), "%Y-%m-%dT%H:%M:%S", tm
);
927 fprintf(fp
, "[%s.%06ld] ", tshort
, tv
.tv_usec
);
929 char *tstr
= asctime(tm
);
931 tstr
[strlen(tstr
)-1] = 0;
932 fprintf(fp
, "Timestamp: %s %ld usec\n",
941 /* Like glibc getline but handle continuation lines and comments */
942 ssize_t
getcmdline(char **linep
, size_t *lenp
, FILE *in
)
947 if ((cc
= getline(linep
, lenp
, in
)) < 0)
948 return cc
; /* eof or error */
951 cp
= strchr(*linep
, '#');
955 while ((cp
= strstr(*linep
, "\\\n")) != NULL
) {
960 if ((cc1
= getline(&line1
, &len1
, in
)) < 0) {
961 fprintf(stderr
, "Missing continuation line\n");
968 cp
= strchr(line1
, '#');
972 *lenp
= strlen(*linep
) + strlen(line1
) + 1;
973 *linep
= realloc(*linep
, *lenp
);
975 fprintf(stderr
, "Out of memory\n");
980 strcat(*linep
, line1
);
986 /* split command line into argument vector */
987 int makeargs(char *line
, char *argv
[], int maxargs
)
989 static const char ws
[] = " \t\r\n";
993 for (cp
= line
+ strspn(line
, ws
); *cp
; cp
+= strspn(cp
, ws
)) {
994 if (argc
>= (maxargs
- 1)) {
995 fprintf(stderr
, "Too many arguments to command\n");
999 /* word begins with quote */
1000 if (*cp
== '\'' || *cp
== '"') {
1004 /* find ending quote */
1005 cp
= strchr(cp
, quote
);
1007 fprintf(stderr
, "Unterminated quoted string\n");
1015 /* find end of word */
1016 cp
+= strcspn(cp
, ws
);
1024 int inet_get_addr(const char *src
, __u32
*dst
, struct in6_addr
*dst6
)
1026 if (strchr(src
, ':'))
1027 return inet_pton(AF_INET6
, src
, dst6
);
1029 return inet_pton(AF_INET
, src
, dst
);
1032 void print_nlmsg_timestamp(FILE *fp
, const struct nlmsghdr
*n
)
1035 time_t secs
= ((__u32
*)NLMSG_DATA(n
))[0];
1036 long usecs
= ((__u32
*)NLMSG_DATA(n
))[1];
1037 tstr
= asctime(localtime(&secs
));
1038 tstr
[strlen(tstr
)-1] = 0;
1039 fprintf(fp
, "Timestamp: %s %lu us\n", tstr
, usecs
);
1042 static int on_netns(char *nsname
, void *arg
)
1044 struct netns_func
*f
= arg
;
1046 if (netns_switch(nsname
))
1049 return f
->func(nsname
, f
->arg
);
1052 static int on_netns_label(char *nsname
, void *arg
)
1054 printf("\nnetns: %s\n", nsname
);
1055 return on_netns(nsname
, arg
);
1058 int do_each_netns(int (*func
)(char *nsname
, void *arg
), void *arg
,
1061 struct netns_func nsf
= { .func
= func
, .arg
= arg
};
1064 return netns_foreach(on_netns_label
, &nsf
);
1066 return netns_foreach(on_netns
, &nsf
);
1069 char *int_to_str(int val
, char *buf
)
1071 sprintf(buf
, "%d", val
);