include/utils.h

   1 #ifndef __UTILS_H__
   2 #define __UTILS_H__ 1
   3
   4 #include <sys/types.h>
   5 #include <asm/types.h>
   6 #include <resolv.h>
   7 #include <stdlib.h>
   8 #include <stdbool.h>
   9
  10 #include "libnetlink.h"
  11 #include "ll_map.h"
  12 #include "rtm_map.h"
  13
  14 extern int preferred_family;
  15 extern int human_readable;
  16 extern int use_iec;
  17 extern int show_stats;
  18 extern int show_details;
  19 extern int show_raw;
  20 extern int resolve_hosts;
  21 extern int oneline;
  22 extern int brief;
  23 extern int timestamp;
  24 extern int timestamp_short;
  25 extern const char * _SL_;
  26 extern int max_flush_loops;
  27 extern int batch_mode;
  28 extern bool do_all;
  29
  30 #ifndef IPPROTO_ESP
  31 #define IPPROTO_ESP     50
  32 #endif
  33 #ifndef IPPROTO_AH
  34 #define IPPROTO_AH      51
  35 #endif
  36 #ifndef IPPROTO_COMP
  37 #define IPPROTO_COMP    108
  38 #endif
  39 #ifndef IPSEC_PROTO_ANY
  40 #define IPSEC_PROTO_ANY 255
  41 #endif
  42
  43 #ifndef CONFDIR
  44 #define CONFDIR         "/etc/iproute2"
  45 #endif
  46
  47 #define SPRINT_BSIZE 64
  48 #define SPRINT_BUF(x)   char x[SPRINT_BSIZE]
  49
  50 void incomplete_command(void) __attribute__((noreturn));
  51
  52 #define NEXT_ARG() do { argv++; if (--argc <= 0) incomplete_command(); } while(0)
  53 #define NEXT_ARG_OK() (argc - 1 > 0)
  54 #define NEXT_ARG_FWD() do { argv++; argc--; } while(0)
  55 #define PREV_ARG() do { argv--; argc++; } while(0)
  56
  57 typedef struct
  58 {
  59         __u16 flags;
  60         __u16 bytelen;
  61         __s16 bitlen;
  62         /* These next two fields match rtvia */
  63         __u16 family;
  64         __u32 data[8];
  65 } inet_prefix;
  66
  67 #define PREFIXLEN_SPECIFIED 1
  68
  69 #define DN_MAXADDL 20
  70 #ifndef AF_DECnet
  71 #define AF_DECnet 12
  72 #endif
  73
  74 struct dn_naddr
  75 {
  76         unsigned short          a_len;
  77         unsigned char a_addr[DN_MAXADDL];
  78 };
  79
  80 #define IPX_NODE_LEN 6
  81
  82 struct ipx_addr {
  83         u_int32_t ipx_net;
  84         u_int8_t  ipx_node[IPX_NODE_LEN];
  85 };
  86
  87 #ifndef AF_MPLS
  88 # define AF_MPLS 28
  89 #endif
  90
  91 /* Maximum number of labels the mpls helpers support */
  92 #define MPLS_MAX_LABELS 8
  93
  94 __u32 get_addr32(const char *name);
  95 int get_addr_1(inet_prefix *dst, const char *arg, int family);
  96 int get_prefix_1(inet_prefix *dst, char *arg, int family);
  97 int get_addr(inet_prefix *dst, const char *arg, int family);
  98 int get_prefix(inet_prefix *dst, char *arg, int family);
  99 int mask2bits(__u32 netmask);
 100 int get_addr_ila(__u64 *val, const char *arg);
 101
 102 int get_hex(char c);
 103 int get_integer(int *val, const char *arg, int base);
 104 int get_unsigned(unsigned *val, const char *arg, int base);
 105 int get_time_rtt(unsigned *val, const char *arg, int *raw);
 106 #define get_byte get_u8
 107 #define get_ushort get_u16
 108 #define get_short get_s16
 109 int get_u64(__u64 *val, const char *arg, int base);
 110 int get_u32(__u32 *val, const char *arg, int base);
 111 int get_s32(__s32 *val, const char *arg, int base);
 112 int get_u16(__u16 *val, const char *arg, int base);
 113 int get_s16(__s16 *val, const char *arg, int base);
 114 int get_u8(__u8 *val, const char *arg, int base);
 115 int get_s8(__s8 *val, const char *arg, int base);
 116 int get_be64(__be64 *val, const char *arg, int base);
 117 int get_be32(__be32 *val, const char *arg, int base);
 118 int get_be16(__be16 *val, const char *arg, int base);
 119 int get_addr64(__u64 *ap, const char *cp);
 120
 121 char *hexstring_n2a(const __u8 *str, int len, char *buf, int blen);
 122 __u8 *hexstring_a2n(const char *str, __u8 *buf, int blen, unsigned int *len);
 123 #define ADDR64_BUF_SIZE sizeof("xxxx:xxxx:xxxx:xxxx")
 124 int addr64_n2a(__u64 addr, char *buff, size_t len);
 125
 126 int af_bit_len(int af);
 127 int af_byte_len(int af);
 128
 129 const char *format_host_r(int af, int len, const void *addr,
 130                                char *buf, int buflen);
 131 const char *format_host(int af, int lne, const void *addr);
 132 #define format_host_rta(af, rta) \
 133         format_host(af, RTA_PAYLOAD(rta), RTA_DATA(rta))
 134 const char *rt_addr_n2a_r(int af, int len, const void *addr,
 135                                char *buf, int buflen);
 136 const char *rt_addr_n2a(int af, int len, const void *addr);
 137 #define rt_addr_n2a_rta(af, rta) \
 138         rt_addr_n2a(af, RTA_PAYLOAD(rta), RTA_DATA(rta))
 139
 140 int read_family(const char *name);
 141 const char *family_name(int family);
 142
 143 void missarg(const char *) __attribute__((noreturn));
 144 void invarg(const char *, const char *) __attribute__((noreturn));
 145 void duparg(const char *, const char *) __attribute__((noreturn));
 146 void duparg2(const char *, const char *) __attribute__((noreturn));
 147 int matches(const char *arg, const char *pattern);
 148 int inet_addr_match(const inet_prefix *a, const inet_prefix *b, int bits);
 149
 150 const char *dnet_ntop(int af, const void *addr, char *str, size_t len);
 151 int dnet_pton(int af, const char *src, void *addr);
 152
 153 const char *ipx_ntop(int af, const void *addr, char *str, size_t len);
 154 int ipx_pton(int af, const char *src, void *addr);
 155
 156 const char *mpls_ntop(int af, const void *addr, char *str, size_t len);
 157 int mpls_pton(int af, const char *src, void *addr);
 158
 159 extern int __iproute2_hz_internal;
 160 int __get_hz(void);
 161
 162 static __inline__ int get_hz(void)
 163 {
 164         if (__iproute2_hz_internal == 0)
 165                 __iproute2_hz_internal = __get_hz();
 166         return __iproute2_hz_internal;
 167 }
 168
 169 extern int __iproute2_user_hz_internal;
 170 int __get_user_hz(void);
 171
 172 static __inline__ int get_user_hz(void)
 173 {
 174         if (__iproute2_user_hz_internal == 0)
 175                 __iproute2_user_hz_internal = __get_user_hz();
 176         return __iproute2_user_hz_internal;
 177 }
 178
 179 static inline __u32 nl_mgrp(__u32 group)
 180 {
 181         if (group > 31 ) {
 182                 fprintf(stderr, "Use setsockopt for this group %d\n", group);
 183                 exit(-1);
 184         }
 185         return group ? (1 << (group - 1)) : 0;
 186 }
 187
 188 /* courtesy of bridge-utils */
 189 static inline unsigned long __tv_to_jiffies(const struct timeval *tv)
 190 {
 191         unsigned long long jif;
 192
 193         jif = 1000000ULL * tv->tv_sec + tv->tv_usec;
 194
 195         return jif/10000;
 196 }
 197
 198 static inline void __jiffies_to_tv(struct timeval *tv, unsigned long jiffies)
 199 {
 200         unsigned long long tvusec;
 201
 202         tvusec = 10000ULL*jiffies;
 203         tv->tv_sec = tvusec/1000000;
 204         tv->tv_usec = tvusec - 1000000 * tv->tv_sec;
 205 }
 206
 207 int print_timestamp(FILE *fp);
 208 void print_nlmsg_timestamp(FILE *fp, const struct nlmsghdr *n);
 209
 210 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
 211
 212 #define BUILD_BUG_ON(cond) ((void)sizeof(char[1 - 2 * !!(cond)]))
 213
 214 #ifndef offsetof
 215 # define offsetof(type, member) ((size_t) &((type *)0)->member)
 216 #endif
 217
 218 #ifndef min
 219 # define min(x, y) ({                   \
 220         typeof(x) _min1 = (x);          \
 221         typeof(y) _min2 = (y);          \
 222         (void) (&_min1 == &_min2);      \
 223         _min1 < _min2 ? _min1 : _min2; })
 224 #endif
 225
 226 #ifndef __check_format_string
 227 # define __check_format_string(pos_str, pos_args) \
 228         __attribute__ ((format (printf, (pos_str), (pos_args))))
 229 #endif
 230
 231 #define _textify(x)     #x
 232 #define textify(x)      _textify(x)
 233
 234 #define htonll(x) ((1==htonl(1)) ? (x) : ((uint64_t)htonl((x) & 0xFFFFFFFF) << 32) | htonl((x) >> 32))
 235 #define ntohll(x) ((1==ntohl(1)) ? (x) : ((uint64_t)ntohl((x) & 0xFFFFFFFF) << 32) | ntohl((x) >> 32))
 236
 237 extern int cmdlineno;
 238 ssize_t getcmdline(char **line, size_t *len, FILE *in);
 239 int makeargs(char *line, char *argv[], int maxargs);
 240 int inet_get_addr(const char *src, __u32 *dst, struct in6_addr *dst6);
 241
 242 struct iplink_req;
 243 int iplink_parse(int argc, char **argv, struct iplink_req *req,
 244                 char **name, char **type, char **link, char **dev,
 245                 int *group, int *index);
 246
 247 int do_each_netns(int (*func)(char *nsname, void *arg), void *arg,
 248                 bool show_label);
 249
 250 char *int_to_str(int val, char *buf);
 251
 252 #endif /* __UTILS_H__ */