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authorGravatar Denis Vlasenko <vda.linux@googlemail.com>2008-04-07 00:46:29 +0000
committerGravatar Denis Vlasenko <vda.linux@googlemail.com>2008-04-07 00:46:29 +0000
commit90c31b3d4b58512ec2e1ed00670668dd52236415 (patch)
tree99f428830311a06751f258784573bb0262d43f11 /networking
parent278a1c22645263f1a82bb3437345e3d96c3f13eb (diff)
downloadbusybox-90c31b3d4b58512ec2e1ed00670668dd52236415.tar.gz
busybox-90c31b3d4b58512ec2e1ed00670668dd52236415.tar.bz2
ping: add -w, -W support (James Simmons <jsimmons AT infradead.org>)
function old new delta print_stats_and_exit - 282 +282 sendping_tail 151 231 +80 packed_usage 23976 24054 +78 ping_main 401 412 +11 arm_ioctl 13 20 +7 pingstats 259 - -259 ------------------------------------------------------------------------------ (add/remove: 1/1 grow/shrink: 4/0 up/down: 458/-259) Total: 199 bytes
Diffstat (limited to 'networking')
-rw-r--r--networking/ping.c73
1 files changed, 50 insertions, 23 deletions
diff --git a/networking/ping.c b/networking/ping.c
index 93b2e02f1..299148641 100644
--- a/networking/ping.c
+++ b/networking/ping.c
@@ -224,15 +224,17 @@ int ping_main(int argc ATTRIBUTE_UNUSED, char **argv)
/* full(er) version */
-#define OPT_STRING ("qvc:s:I:4" USE_PING6("6"))
+#define OPT_STRING ("qvc:s:w:W:I:4" USE_PING6("6"))
enum {
OPT_QUIET = 1 << 0,
OPT_VERBOSE = 1 << 1,
OPT_c = 1 << 2,
OPT_s = 1 << 3,
- OPT_I = 1 << 4,
- OPT_IPV4 = 1 << 5,
- OPT_IPV6 = (1 << 6) * ENABLE_PING6,
+ OPT_w = 1 << 4,
+ OPT_W = 1 << 5,
+ OPT_I = 1 << 6,
+ OPT_IPV4 = 1 << 7,
+ OPT_IPV6 = (1 << 8) * ENABLE_PING6,
};
@@ -246,6 +248,9 @@ struct globals {
uint16_t myid;
unsigned tmin, tmax; /* in us */
unsigned long long tsum; /* in us, sum of all times */
+ unsigned deadline;
+ unsigned timeout;
+ unsigned total_secs;
const char *hostname;
const char *dotted;
union {
@@ -271,6 +276,9 @@ struct globals {
#define tmin (G.tmin )
#define tmax (G.tmax )
#define tsum (G.tsum )
+#define deadline (G.deadline )
+#define timeout (G.timeout )
+#define total_secs (G.total_secs )
#define hostname (G.hostname )
#define dotted (G.dotted )
#define pingaddr (G.pingaddr )
@@ -280,6 +288,8 @@ void BUG_ping_globals_too_big(void);
if (sizeof(G) > COMMON_BUFSIZE) \
BUG_ping_globals_too_big(); \
pingsock = -1; \
+ datalen = DEFDATALEN; \
+ timeout = MAXWAIT; \
tmin = UINT_MAX; \
} while (0)
@@ -292,7 +302,8 @@ void BUG_ping_globals_too_big(void);
/**************************************************************************/
-static void pingstats(int junk ATTRIBUTE_UNUSED)
+static void print_stats_and_exit(int junk) ATTRIBUTE_NORETURN;
+static void print_stats_and_exit(int junk ATTRIBUTE_UNUSED)
{
signal(SIGINT, SIG_IGN);
@@ -311,7 +322,8 @@ static void pingstats(int junk ATTRIBUTE_UNUSED)
tavg / 1000, tavg % 1000,
tmax / 1000, tmax % 1000);
}
- exit(nreceived == 0); /* (nreceived == 0) is true (1) -- 'failure' */
+ /* if condition is true, exit with 1 -- 'failure' */
+ exit(nreceived == 0 || (deadline && nreceived < pingcount));
}
static void sendping_tail(void (*sp)(int), const void *pkt, int size_pkt)
@@ -327,13 +339,30 @@ static void sendping_tail(void (*sp)(int), const void *pkt, int size_pkt)
if (sz != size_pkt)
bb_error_msg_and_die(bb_msg_write_error);
- signal(SIGALRM, sp);
- if (pingcount == 0 || ntransmitted < pingcount) { /* schedule next in 1s */
+ if (pingcount == 0 || deadline || ntransmitted < pingcount) {
+ /* Didn't send all pings yet - schedule next in 1s */
+ signal(SIGALRM, sp);
+ if (deadline) {
+ total_secs += PINGINTERVAL;
+ if (total_secs >= deadline)
+ signal(SIGALRM, print_stats_and_exit);
+ }
alarm(PINGINTERVAL);
- } else { /* done, wait for the last ping to come back */
- /* todo, don't necessarily need to wait so long... */
- signal(SIGALRM, pingstats);
- alarm(MAXWAIT);
+ } else { /* -c NN, and all NN are sent (and no deadline) */
+ /* Wait for the last ping to come back.
+ * -W timeout: wait for a response in seconds.
+ * Affects only timeout in absense of any responses,
+ * otherwise ping waits for two RTTs. */
+ unsigned expire = timeout;
+
+ if (nreceived) {
+ /* approx. 2*tmax, in seconds (2 RTT) */
+ expire = tmax / (512*1024);
+ if (expire == 0)
+ expire = 1;
+ }
+ signal(SIGALRM, print_stats_and_exit);
+ alarm(expire);
}
}
@@ -549,7 +578,7 @@ static void ping4(len_and_sockaddr *lsa)
sockopt = 48 * 1024; /* explain why 48k? */
setsockopt(pingsock, SOL_SOCKET, SO_RCVBUF, &sockopt, sizeof(sockopt));
- signal(SIGINT, pingstats);
+ signal(SIGINT, print_stats_and_exit);
/* start the ping's going ... */
sendping4(0);
@@ -568,7 +597,7 @@ static void ping4(len_and_sockaddr *lsa)
continue;
}
unpack4(packet, c, &from);
- if (pingcount > 0 && nreceived >= pingcount)
+ if (pingcount && nreceived >= pingcount)
break;
}
}
@@ -624,7 +653,7 @@ static void ping6(len_and_sockaddr *lsa)
if (if_index)
pingaddr.sin6.sin6_scope_id = if_index;
- signal(SIGINT, pingstats);
+ signal(SIGINT, print_stats_and_exit);
/* start the ping's going ... */
sendping6(0);
@@ -659,7 +688,7 @@ static void ping6(len_and_sockaddr *lsa)
}
}
unpack6(packet, c, /*&from,*/ hoplimit);
- if (pingcount > 0 && nreceived >= pingcount)
+ if (pingcount && nreceived >= pingcount)
break;
}
}
@@ -691,11 +720,9 @@ int ping_main(int argc ATTRIBUTE_UNUSED, char **argv)
INIT_G();
- datalen = DEFDATALEN;
-
- /* exactly one argument needed, -v and -q don't mix */
- opt_complementary = "=1:q--v:v--q";
- getopt32(argv, OPT_STRING, &opt_c, &opt_s, &opt_I);
+ /* exactly one argument needed; -v and -q don't mix; -w NUM, -W NUM */
+ opt_complementary = "=1:q--v:v--q:w+:W+";
+ getopt32(argv, OPT_STRING, &opt_c, &opt_s, &deadline, &timeout, &opt_I);
if (option_mask32 & OPT_c)
pingcount = xatoul(opt_c); // -c
if (option_mask32 & OPT_s)
@@ -726,8 +753,8 @@ int ping_main(int argc ATTRIBUTE_UNUSED, char **argv)
dotted = xmalloc_sockaddr2dotted_noport(&lsa->u.sa);
ping(lsa);
- pingstats(0);
- return EXIT_SUCCESS;
+ print_stats_and_exit(0);
+ /*return EXIT_SUCCESS;*/
}
#endif /* FEATURE_FANCY_PING */