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      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_integer(int *val, const char *arg, int base);
    103 int get_unsigned(unsigned *val, const char *arg, int base);
    104 int get_time_rtt(unsigned *val, const char *arg, int *raw);
    105 #define get_byte get_u8
    106 #define get_ushort get_u16
    107 #define get_short get_s16
    108 int get_u64(__u64 *val, const char *arg, int base);
    109 int get_u32(__u32 *val, const char *arg, int base);
    110 int get_s32(__s32 *val, const char *arg, int base);
    111 int get_u16(__u16 *val, const char *arg, int base);
    112 int get_s16(__s16 *val, const char *arg, int base);
    113 int get_u8(__u8 *val, const char *arg, int base);
    114 int get_s8(__s8 *val, const char *arg, int base);
    115 int get_addr64(__u64 *ap, const char *cp);
    116 
    117 char* hexstring_n2a(const __u8 *str, int len, char *buf, int blen);
    118 __u8* hexstring_a2n(const char *str, __u8 *buf, int blen);
    119 #define ADDR64_BUF_SIZE sizeof("xxxx:xxxx:xxxx:xxxx")
    120 int addr64_n2a(__u64 addr, char *buff, size_t len);
    121 
    122 int af_bit_len(int af);
    123 int af_byte_len(int af);
    124 
    125 const char *format_host(int af, int len, const void *addr,
    126 			       char *buf, int buflen);
    127 const char *rt_addr_n2a(int af, int len, const void *addr,
    128 			       char *buf, int buflen);
    129 
    130 int read_family(const char *name);
    131 const char *family_name(int family);
    132 
    133 void missarg(const char *) __attribute__((noreturn));
    134 void invarg(const char *, const char *) __attribute__((noreturn));
    135 void duparg(const char *, const char *) __attribute__((noreturn));
    136 void duparg2(const char *, const char *) __attribute__((noreturn));
    137 int matches(const char *arg, const char *pattern);
    138 int inet_addr_match(const inet_prefix *a, const inet_prefix *b, int bits);
    139 
    140 const char *dnet_ntop(int af, const void *addr, char *str, size_t len);
    141 int dnet_pton(int af, const char *src, void *addr);
    142 
    143 const char *ipx_ntop(int af, const void *addr, char *str, size_t len);
    144 int ipx_pton(int af, const char *src, void *addr);
    145 
    146 const char *mpls_ntop(int af, const void *addr, char *str, size_t len);
    147 int mpls_pton(int af, const char *src, void *addr);
    148 
    149 extern int __iproute2_hz_internal;
    150 int __get_hz(void);
    151 
    152 static __inline__ int get_hz(void)
    153 {
    154 	if (__iproute2_hz_internal == 0)
    155 		__iproute2_hz_internal = __get_hz();
    156 	return __iproute2_hz_internal;
    157 }
    158 
    159 extern int __iproute2_user_hz_internal;
    160 int __get_user_hz(void);
    161 
    162 static __inline__ int get_user_hz(void)
    163 {
    164 	if (__iproute2_user_hz_internal == 0)
    165 		__iproute2_user_hz_internal = __get_user_hz();
    166 	return __iproute2_user_hz_internal;
    167 }
    168 
    169 static inline __u32 nl_mgrp(__u32 group)
    170 {
    171 	if (group > 31 ) {
    172 		fprintf(stderr, "Use setsockopt for this group %d\n", group);
    173 		exit(-1);
    174 	}
    175 	return group ? (1 << (group - 1)) : 0;
    176 }
    177 
    178 
    179 int print_timestamp(FILE *fp);
    180 void print_nlmsg_timestamp(FILE *fp, const struct nlmsghdr *n);
    181 
    182 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
    183 
    184 #define BUILD_BUG_ON(cond) ((void)sizeof(char[1 - 2 * !!(cond)]))
    185 
    186 #ifndef offsetof
    187 # define offsetof(type, member) ((size_t) &((type *)0)->member)
    188 #endif
    189 
    190 #ifndef min
    191 # define min(x, y) ({			\
    192 	typeof(x) _min1 = (x);		\
    193 	typeof(y) _min2 = (y);		\
    194 	(void) (&_min1 == &_min2);	\
    195 	_min1 < _min2 ? _min1 : _min2; })
    196 #endif
    197 
    198 #ifndef __check_format_string
    199 # define __check_format_string(pos_str, pos_args) \
    200 	__attribute__ ((format (printf, (pos_str), (pos_args))))
    201 #endif
    202 
    203 #define _textify(x)	#x
    204 #define textify(x)	_textify(x)
    205 
    206 #define htonll(x) ((1==htonl(1)) ? (x) : ((uint64_t)htonl((x) & 0xFFFFFFFF) << 32) | htonl((x) >> 32))
    207 #define ntohll(x) ((1==ntohl(1)) ? (x) : ((uint64_t)ntohl((x) & 0xFFFFFFFF) << 32) | ntohl((x) >> 32))
    208 
    209 extern int cmdlineno;
    210 ssize_t getcmdline(char **line, size_t *len, FILE *in);
    211 int makeargs(char *line, char *argv[], int maxargs);
    212 int inet_get_addr(const char *src, __u32 *dst, struct in6_addr *dst6);
    213 
    214 struct iplink_req;
    215 int iplink_parse(int argc, char **argv, struct iplink_req *req,
    216 		char **name, char **type, char **link, char **dev,
    217 		int *group, int *index);
    218 
    219 int do_each_netns(int (*func)(char *nsname, void *arg), void *arg,
    220 		bool show_label);
    221 
    222 char *int_to_str(int val, char *buf);
    223 
    224 #endif /* __UTILS_H__ */
    225