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 #define SPRINT_BSIZE 64
  44 #define SPRINT_BUF(x)   char x[SPRINT_BSIZE]
  45
  46 void incomplete_command(void) __attribute__((noreturn));
  47
  48 #define NEXT_ARG() do { argv++; if (--argc <= 0) incomplete_command(); } while(0)
  49 #define NEXT_ARG_OK() (argc - 1 > 0)
  50 #define NEXT_ARG_FWD() do { argv++; argc--; } while(0)
  51 #define PREV_ARG() do { argv--; argc++; } while(0)
  52
  53 typedef struct
  54 {
  55         __u16 flags;
  56         __u16 bytelen;
  57         __s16 bitlen;
  58         /* These next two fields match rtvia */
  59         __u16 family;
  60         __u32 data[8];
  61 } inet_prefix;
  62
  63 #define PREFIXLEN_SPECIFIED 1
  64
  65 #define DN_MAXADDL 20
  66 #ifndef AF_DECnet
  67 #define AF_DECnet 12
  68 #endif
  69
  70 struct dn_naddr
  71 {
  72         unsigned short          a_len;
  73         unsigned char a_addr[DN_MAXADDL];
  74 };
  75
  76 #define IPX_NODE_LEN 6
  77
  78 struct ipx_addr {
  79         u_int32_t ipx_net;
  80         u_int8_t  ipx_node[IPX_NODE_LEN];
  81 };
  82
  83 #ifndef AF_MPLS
  84 # define AF_MPLS 28
  85 #endif
  86
  87 /* Maximum number of labels the mpls helpers support */
  88 #define MPLS_MAX_LABELS 8
  89
  90 __u32 get_addr32(const char *name);
  91 int get_addr_1(inet_prefix *dst, const char *arg, int family);
  92 int get_prefix_1(inet_prefix *dst, char *arg, int family);
  93 int get_addr(inet_prefix *dst, const char *arg, int family);
  94 int get_prefix(inet_prefix *dst, char *arg, int family);
  95 int mask2bits(__u32 netmask);
  96
  97 int get_integer(int *val, const char *arg, int base);
  98 int get_unsigned(unsigned *val, const char *arg, int base);
  99 int get_time_rtt(unsigned *val, const char *arg, int *raw);
 100 #define get_byte get_u8
 101 #define get_ushort get_u16
 102 #define get_short get_s16
 103 int get_u64(__u64 *val, const char *arg, int base);
 104 int get_u32(__u32 *val, const char *arg, int base);
 105 int get_s32(__s32 *val, const char *arg, int base);
 106 int get_u16(__u16 *val, const char *arg, int base);
 107 int get_s16(__s16 *val, const char *arg, int base);
 108 int get_u8(__u8 *val, const char *arg, int base);
 109 int get_s8(__s8 *val, const char *arg, int base);
 110
 111 char* hexstring_n2a(const __u8 *str, int len, char *buf, int blen);
 112 __u8* hexstring_a2n(const char *str, __u8 *buf, int blen);
 113
 114 int af_bit_len(int af);
 115 int af_byte_len(int af);
 116
 117 const char *format_host(int af, int len, const void *addr,
 118                                char *buf, int buflen);
 119 const char *rt_addr_n2a(int af, int len, const void *addr,
 120                                char *buf, int buflen);
 121
 122 int read_family(const char *name);
 123 const char *family_name(int family);
 124
 125 void missarg(const char *) __attribute__((noreturn));
 126 void invarg(const char *, const char *) __attribute__((noreturn));
 127 void duparg(const char *, const char *) __attribute__((noreturn));
 128 void duparg2(const char *, const char *) __attribute__((noreturn));
 129 int matches(const char *arg, const char *pattern);
 130 int inet_addr_match(const inet_prefix *a, const inet_prefix *b, int bits);
 131
 132 const char *dnet_ntop(int af, const void *addr, char *str, size_t len);
 133 int dnet_pton(int af, const char *src, void *addr);
 134
 135 const char *ipx_ntop(int af, const void *addr, char *str, size_t len);
 136 int ipx_pton(int af, const char *src, void *addr);
 137
 138 const char *mpls_ntop(int af, const void *addr, char *str, size_t len);
 139 int mpls_pton(int af, const char *src, void *addr);
 140
 141 extern int __iproute2_hz_internal;
 142 int __get_hz(void);
 143
 144 static __inline__ int get_hz(void)
 145 {
 146         if (__iproute2_hz_internal == 0)
 147                 __iproute2_hz_internal = __get_hz();
 148         return __iproute2_hz_internal;
 149 }
 150
 151 extern int __iproute2_user_hz_internal;
 152 int __get_user_hz(void);
 153
 154 static __inline__ int get_user_hz(void)
 155 {
 156         if (__iproute2_user_hz_internal == 0)
 157                 __iproute2_user_hz_internal = __get_user_hz();
 158         return __iproute2_user_hz_internal;
 159 }
 160
 161 static inline __u32 nl_mgrp(__u32 group)
 162 {
 163         if (group > 31 ) {
 164                 fprintf(stderr, "Use setsockopt for this group %d\n", group);
 165                 exit(-1);
 166         }
 167         return group ? (1 << (group - 1)) : 0;
 168 }
 169
 170
 171 int print_timestamp(FILE *fp);
 172 void print_nlmsg_timestamp(FILE *fp, const struct nlmsghdr *n);
 173
 174 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
 175
 176 #define BUILD_BUG_ON(cond) ((void)sizeof(char[1 - 2 * !!(cond)]))
 177
 178 #ifndef offsetof
 179 # define offsetof(type, member) ((size_t) &((type *)0)->member)
 180 #endif
 181
 182 #ifndef min
 183 # define min(x, y) ({                   \
 184         typeof(x) _min1 = (x);          \
 185         typeof(y) _min2 = (y);          \
 186         (void) (&_min1 == &_min2);      \
 187         _min1 < _min2 ? _min1 : _min2; })
 188 #endif
 189
 190 #ifndef __check_format_string
 191 # define __check_format_string(pos_str, pos_args) \
 192         __attribute__ ((format (printf, (pos_str), (pos_args))))
 193 #endif
 194
 195 #define htonll(x) ((1==htonl(1)) ? (x) : ((uint64_t)htonl((x) & 0xFFFFFFFF) << 32) | htonl((x) >> 32))
 196 #define ntohll(x) ((1==ntohl(1)) ? (x) : ((uint64_t)ntohl((x) & 0xFFFFFFFF) << 32) | ntohl((x) >> 32))
 197
 198 extern int cmdlineno;
 199 ssize_t getcmdline(char **line, size_t *len, FILE *in);
 200 int makeargs(char *line, char *argv[], int maxargs);
 201 int inet_get_addr(const char *src, __u32 *dst, struct in6_addr *dst6);
 202
 203 struct iplink_req;
 204 int iplink_parse(int argc, char **argv, struct iplink_req *req,
 205                 char **name, char **type, char **link, char **dev,
 206                 int *group, int *index);
 207
 208 int do_each_netns(int (*func)(char *nsname, void *arg), void *arg,
 209                 bool show_label);
 210
 211 char *int_to_str(int val, char *buf);
 212
 213 #endif /* __UTILS_H__ */