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icmp: Implement ping tracking based on echo identifiers

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Open and bind a socket for each possible ICMP/ICMPv6 echo identifier,
and add a tracking mechanism. Otherwise, multiple pings in parallel
won't work, and a single ping to a different destination would make
an existing ping sequence stop working.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
This commit is contained in:
Stefano Brivio 2021-05-21 11:14:50 +02:00
commit d303cfdd55
3 changed files with 33 additions and 31 deletions

3
util.c
View file

@ -189,9 +189,6 @@ int sock_l4(struct ctx *c, int af, uint16_t proto, uint16_t port)
return -1;
}
if (proto == IPPROTO_ICMP || proto == IPPROTO_ICMPV6)
goto epoll_add;
if (af == AF_INET) {
sa = (const struct sockaddr *)&addr4;
sl = sizeof(addr4);