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
 101 int get_integer(int *val, const char *arg, int base);
 102 int get_unsigned(unsigned *val, const char *arg, int base);
 103 int get_time_rtt(unsigned *val, const char *arg, int *raw);
 104 #define get_byte get_u8
 105 #define get_ushort get_u16
 106 #define get_short get_s16
 107 int get_u64(__u64 *val, const char *arg, int base);
 108 int get_u32(__u32 *val, const char *arg, int base);
 109 int get_s32(__s32 *val, const char *arg, int base);
 110 int get_u16(__u16 *val, const char *arg, int base);
 111 int get_s16(__s16 *val, const char *arg, int base);
 112 int get_u8(__u8 *val, const char *arg, int base);
 113 int get_s8(__s8 *val, const char *arg, int base);
 114
 115 char* hexstring_n2a(const __u8 *str, int len, char *buf, int blen);
 116 __u8* hexstring_a2n(const char *str, __u8 *buf, int blen);
 117
 118 int af_bit_len(int af);
 119 int af_byte_len(int af);
 120
 121 const char *format_host(int af, int len, const void *addr,
 122                                char *buf, int buflen);
 123 const char *rt_addr_n2a(int af, int len, const void *addr,
 124                                char *buf, int buflen);
 125
 126 int read_family(const char *name);
 127 const char *family_name(int family);
 128
 129 void missarg(const char *) __attribute__((noreturn));
 130 void invarg(const char *, const char *) __attribute__((noreturn));
 131 void duparg(const char *, const char *) __attribute__((noreturn));
 132 void duparg2(const char *, const char *) __attribute__((noreturn));
 133 int matches(const char *arg, const char *pattern);
 134 int inet_addr_match(const inet_prefix *a, const inet_prefix *b, int bits);
 135
 136 const char *dnet_ntop(int af, const void *addr, char *str, size_t len);
 137 int dnet_pton(int af, const char *src, void *addr);
 138
 139 const char *ipx_ntop(int af, const void *addr, char *str, size_t len);
 140 int ipx_pton(int af, const char *src, void *addr);
 141
 142 const char *mpls_ntop(int af, const void *addr, char *str, size_t len);
 143 int mpls_pton(int af, const char *src, void *addr);
 144
 145 extern int __iproute2_hz_internal;
 146 int __get_hz(void);
 147
 148 static __inline__ int get_hz(void)
 149 {
 150         if (__iproute2_hz_internal == 0)
 151                 __iproute2_hz_internal = __get_hz();
 152         return __iproute2_hz_internal;
 153 }
 154
 155 extern int __iproute2_user_hz_internal;
 156 int __get_user_hz(void);
 157
 158 static __inline__ int get_user_hz(void)
 159 {
 160         if (__iproute2_user_hz_internal == 0)
 161                 __iproute2_user_hz_internal = __get_user_hz();
 162         return __iproute2_user_hz_internal;
 163 }
 164
 165 static inline __u32 nl_mgrp(__u32 group)
 166 {
 167         if (group > 31 ) {
 168                 fprintf(stderr, "Use setsockopt for this group %d\n", group);
 169                 exit(-1);
 170         }
 171         return group ? (1 << (group - 1)) : 0;
 172 }
 173
 174
 175 int print_timestamp(FILE *fp);
 176 void print_nlmsg_timestamp(FILE *fp, const struct nlmsghdr *n);
 177
 178 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
 179
 180 #define BUILD_BUG_ON(cond) ((void)sizeof(char[1 - 2 * !!(cond)]))
 181
 182 #ifndef offsetof
 183 # define offsetof(type, member) ((size_t) &((type *)0)->member)
 184 #endif
 185
 186 #ifndef min
 187 # define min(x, y) ({                   \
 188         typeof(x) _min1 = (x);          \
 189         typeof(y) _min2 = (y);          \
 190         (void) (&_min1 == &_min2);      \
 191         _min1 < _min2 ? _min1 : _min2; })
 192 #endif
 193
 194 #ifndef __check_format_string
 195 # define __check_format_string(pos_str, pos_args) \
 196         __attribute__ ((format (printf, (pos_str), (pos_args))))
 197 #endif
 198
 199 #define _textify(x)     #x
 200 #define textify(x)      _textify(x)
 201
 202 #define htonll(x) ((1==htonl(1)) ? (x) : ((uint64_t)htonl((x) & 0xFFFFFFFF) << 32) | htonl((x) >> 32))
 203 #define ntohll(x) ((1==ntohl(1)) ? (x) : ((uint64_t)ntohl((x) & 0xFFFFFFFF) << 32) | ntohl((x) >> 32))
 204
 205 extern int cmdlineno;
 206 ssize_t getcmdline(char **line, size_t *len, FILE *in);
 207 int makeargs(char *line, char *argv[], int maxargs);
 208 int inet_get_addr(const char *src, __u32 *dst, struct in6_addr *dst6);
 209
 210 struct iplink_req;
 211 int iplink_parse(int argc, char **argv, struct iplink_req *req,
 212                 char **name, char **type, char **link, char **dev,
 213                 int *group, int *index);
 214
 215 int do_each_netns(int (*func)(char *nsname, void *arg), void *arg,
 216                 bool show_label);
 217
 218 char *int_to_str(int val, char *buf);
 219
 220 #endif /* __UTILS_H__ */