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ntp: enable PKTINFO on client sockets

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This will be useful to detect synchronization loops.
This commit is contained in:
Miroslav Lichvar 2014-10-08 15:10:33 +02:00
parent 2f738d5805
commit 15d8c08eaa
1 changed files with 8 additions and 11 deletions
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19
ntp_io.c
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@ -174,8 +174,7 @@ prepare_socket(int family, int port_number, int client_only)
if (family == AF_INET) { if (family == AF_INET) {
#ifdef IP_PKTINFO #ifdef IP_PKTINFO
/* We want the local IP info on server sockets */ /* We want the local IP info on server sockets */
if (!client_only && if (setsockopt(sock_fd, IPPROTO_IP, IP_PKTINFO, (char *)&on_off, sizeof(on_off)) < 0) {
setsockopt(sock_fd, IPPROTO_IP, IP_PKTINFO, (char *)&on_off, sizeof(on_off)) < 0) {
LOG(LOGS_ERR, LOGF_NtpIO, "Could not set packet info socket option"); LOG(LOGS_ERR, LOGF_NtpIO, "Could not set packet info socket option");
/* Don't quit - we might survive anyway */ /* Don't quit - we might survive anyway */
} }
@ -190,17 +189,15 @@ prepare_socket(int family, int port_number, int client_only)
} }
#endif #endif
if (!client_only) {
#ifdef IPV6_RECVPKTINFO #ifdef IPV6_RECVPKTINFO
if (setsockopt(sock_fd, IPPROTO_IPV6, IPV6_RECVPKTINFO, (char *)&on_off, sizeof(on_off)) < 0) { if (setsockopt(sock_fd, IPPROTO_IPV6, IPV6_RECVPKTINFO, (char *)&on_off, sizeof(on_off)) < 0) {
LOG(LOGS_ERR, LOGF_NtpIO, "Could not set IPv6 packet info socket option"); LOG(LOGS_ERR, LOGF_NtpIO, "Could not set IPv6 packet info socket option");
}
#elif defined(IPV6_PKTINFO)
if (setsockopt(sock_fd, IPPROTO_IPV6, IPV6_PKTINFO, (char *)&on_off, sizeof(on_off)) < 0) {
LOG(LOGS_ERR, LOGF_NtpIO, "Could not set IPv6 packet info socket option");
}
#endif
} }
#elif defined(IPV6_PKTINFO)
if (setsockopt(sock_fd, IPPROTO_IPV6, IPV6_PKTINFO, (char *)&on_off, sizeof(on_off)) < 0) {
LOG(LOGS_ERR, LOGF_NtpIO, "Could not set IPv6 packet info socket option");
}
#endif
} }
#endif #endif