6 #include <sys/socket.h>
7 #include <linux/sockios.h>
10 #include <sys/signal.h>
11 #include <sys/ioctl.h>
20 #include <netinet/in.h>
21 #include <arpa/inet.h>
22 #include <linux/types.h>
23 #include <linux/errqueue.h>
27 #define DEFDATALEN (64 - 8) /* default data length */
29 #define MAXWAIT 10 /* max seconds to wait for response */
30 #define MININTERVAL 10 /* Minimal interpacket gap */
31 #define MINUSERINTERVAL 200 /* Minimal allowed interval for non-root */
33 #define SCHINT(a) (((a) <= MININTERVAL) ? MININTERVAL : (a))
35 #define A(bit) rcvd_tbl[(bit)>>3] /* identify byte in array */
36 #define B(bit) (1 << ((bit) & 0x07)) /* identify bit in byte */
37 #define SET(bit) (A(bit) |= B(bit))
38 #define CLR(bit) (A(bit) &= (~B(bit)))
39 #define TST(bit) (A(bit) & B(bit))
44 #define F_INTERVAL 0x002
45 #define F_NUMERIC 0x004
46 #define F_PINGFILLED 0x008
48 #define F_RROUTE 0x020
49 #define F_SO_DEBUG 0x040
50 #define F_SO_DONTROUTE 0x080
51 #define F_VERBOSE 0x100
52 #define F_TIMESTAMP 0x200
53 #define F_FLOWINFO 0x200
54 #define F_SOURCEROUTE 0x400
55 #define F_TCLASS 0x400
56 #define F_FLOOD_POLL 0x800
57 #define F_LATENCY 0x1000
58 #define F_AUDIBLE 0x2000
59 #define F_ADAPTIVE 0x4000
60 #define F_STRICTSOURCE 0x8000
61 #define F_NOLOOP 0x10000
63 #define F_MARK 0x40000
64 #define F_PTIMEOFDAY 0x80000
67 * MAX_DUP_CHK is the number of bits in received table, i.e. the maximum
68 * number of received sequence numbers we can keep track of.
70 #define MAX_DUP_CHK 0x10000
72 extern char rcvd_tbl[MAX_DUP_CHK / 8];
75 extern u_char outpack[];
79 extern char *hostname;
81 extern int ident; /* process id to identify our packets */
86 extern long npackets; /* max packets to transmit */
87 extern long nreceived; /* # of packets we got back */
88 extern long nrepeats; /* number of duplicates */
89 extern long ntransmitted; /* sequence # for outbound packets = #sent */
90 extern long nchecksum; /* replies with bad checksum */
91 extern long nerrors; /* icmp errors */
92 extern int interval; /* interval between packets (msec) */
94 extern int deadline; /* time to die */
95 extern int lingertime;
96 extern struct timeval start_time, cur_time;
97 extern volatile int exiting;
98 extern volatile int status_snapshot;
100 extern int confirm_flag;
101 extern int working_recverr;
104 #define MSG_CONFIRM 0
109 extern int timing; /* flag to do timing */
110 extern long tmin; /* minimum round trip time */
111 extern long tmax; /* maximum round trip time */
112 extern long long tsum; /* sum of all times, for doing average */
113 extern long long tsum2;
118 #define COMMON_OPTIONS \
119 case 'a': case 'U': case 'c': case 'd': \
120 case 'f': case 'i': case 'w': case 'l': \
121 case 'S': case 'n': case 'p': case 'q': \
122 case 'r': case 's': case 'v': case 'L': \
123 case 't': case 'A': case 'W': case 'B': case 'm': \
126 #define COMMON_OPTSTR "h?VQ:I:M:aUc:dfi:w:l:S:np:qrs:vLt:AW:Bm:D"
131 * Subtract 2 timeval structs: out = out - in. Out is assumed to
134 static inline void tvsub(struct timeval *out, struct timeval *in)
136 if ((out->tv_usec -= in->tv_usec) < 0) {
138 out->tv_usec += 1000000;
140 out->tv_sec -= in->tv_sec;
143 static inline void set_signal(int signo, void (*handler)(int))
147 memset(&sa, 0, sizeof(sa));
149 sa.sa_handler = (void (*)(int))handler;
151 sa.sa_flags = SA_INTERRUPT;
153 sigaction(signo, &sa, NULL);
156 extern int __schedule_exit(int next);
158 static inline int schedule_exit(int next)
160 if (npackets && ntransmitted >= npackets && !deadline)
161 next = __schedule_exit(next);
165 static inline int in_flight(void)
167 __u16 diff = (__u16)ntransmitted - acked;
168 return (diff<=0x7FFF) ? diff : ntransmitted-nreceived-nerrors;
171 static inline void acknowledge(__u16 seq)
173 __u16 diff = (__u16)ntransmitted - seq;
174 if (diff <= 0x7FFF) {
175 if ((int)diff+1 > pipesize)
176 pipesize = (int)diff+1;
177 if ((__s16)(seq - acked) > 0 ||
178 (__u16)ntransmitted - acked > 0x7FFF)
183 static inline void advance_ntransmitted(void)
186 /* Invalidate acked, if 16 bit seq overflows. */
187 if ((__u16)ntransmitted - acked > 0x7FFF)
188 acked = (__u16)ntransmitted + 1;
192 extern int send_probe(void);
193 extern int receive_error_msg(void);
194 extern int parse_reply(struct msghdr *msg, int len, void *addr, struct timeval *);
195 extern void install_filter(void);
197 extern int pinger(void);
198 extern void sock_setbufs(int icmp_sock, int alloc);
199 extern void setup(int icmp_sock);
200 extern void main_loop(int icmp_sock, __u8 *buf, int buflen) __attribute__((noreturn));
201 extern void finish(void) __attribute__((noreturn));
202 extern void status(void);
203 extern void common_options(int ch);
204 extern int gather_statistics(__u8 *ptr, int icmplen,
205 int cc, __u16 seq, int hops,
206 int csfailed, struct timeval *tv, char *from,
207 void (*pr_reply)(__u8 *ptr, int cc));
208 extern void print_timestamp(void);