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traceroute: even with -v, don't show other ping processes reply's

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function                                             old     new   delta
traceroute_init                                     1135    1151     +16
common_ping_main                                    1919    1935     +16
common_traceroute_main                              1715    1668     -47
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/1 up/down: 32/-47)            Total: -15 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2020-12-13 15:53:06 +01:00
parent d067acb005
commit 623e55a396
2 changed files with 21 additions and 2 deletions
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10
networking/ping.c
View File

@ -332,6 +332,11 @@ static int common_ping_main(sa_family_t af, char **argv)
create_icmp_socket(lsa);
G.myid = (uint16_t) getpid();
/* we can use native-endian ident, but other Unix ping/traceroute
* utils use *big-endian pid*, and e.g. traceroute on our machine may be
* *not* from busybox, idents may collide. Follow the convention:
*/
G.myid = htons(G.myid);
#if ENABLE_PING6
if (lsa->u.sa.sa_family == AF_INET6)
ping6(lsa);
@ -927,6 +932,11 @@ static int common_ping_main(int opt, char **argv)
G.interval_us = interval * 1000000;
myid = (uint16_t) getpid();
/* we can use native-endian ident, but other Unix ping/traceroute
* utils use *big-endian pid*, and e.g. traceroute on our machine may be
* *not* from busybox, idents may collide. Follow the convention:
*/
myid = htons(myid);
hostname = argv[optind];
#if ENABLE_PING6
{

13
networking/traceroute.c
View File

@ -659,9 +659,11 @@ packet4_ok(int read_len, int seq)
if ((option_mask32 & OPT_USE_ICMP)
&& type == ICMP_ECHOREPLY
&& icp->icmp_id == ident
&& icp->icmp_seq == htons(seq)
) {
if (icp->icmp_id != ident)
/* reply to another ping/traceroute from this box? */
return 0; /* ignore, silently */
/* In UDP mode, when we reach the machine, we (usually)
* would get "port unreachable" - in ICMP we got "echo reply".
* Simulate "port unreachable" for caller:
@ -726,9 +728,11 @@ packet6_ok(int read_len, int seq)
if ((option_mask32 & OPT_USE_ICMP)
&& type == ICMP6_ECHO_REPLY
&& icp->icmp6_id == ident
&& icp->icmp6_seq == htons(seq)
) {
if (icp->icmp6_id != ident)
/* reply to another ping/traceroute from this box? */
return 0; /* ignore, silently */
/* In UDP mode, when we reach the machine, we (usually)
* would get "port unreachable" - in ICMP we got "echo reply".
* Simulate "port unreachable" for caller:
@ -988,6 +992,11 @@ traceroute_init(int op, char **argv)
outip = xzalloc(packlen);
ident = getpid();
/* we can use native-endian ident, but other Unix ping/traceroute
* utils use *big-endian pid*, and e.g. ping on our machine may be
* *not* from busybox, idents may collide. Follow the convention:
*/
ident = htons(ident);
outdata = (void*)(outudp + 1);
if (af == AF_INET) {