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ntp: check supported flags before enabling HW timestamping

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This commit is contained in:
Miroslav Lichvar
2017-01-27 11:24:45 +01:00
parent 60fca19d40
commit c174566982
1 changed files with 9 additions and 1 deletions
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10
ntp_io_linux.c
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@@ -103,7 +103,7 @@ add_interface(CNF_HwTsInterface *conf_iface)
struct ethtool_ts_info ts_info;
struct hwtstamp_config ts_config;
struct ifreq req;
int sock_fd, if_index, phc_fd;
int sock_fd, if_index, phc_fd, req_hwts_flags;
unsigned int i;
struct Interface *iface;
@@ -143,6 +143,14 @@ add_interface(CNF_HwTsInterface *conf_iface)
return 0;
}
req_hwts_flags = SOF_TIMESTAMPING_RX_HARDWARE | SOF_TIMESTAMPING_TX_HARDWARE |
SOF_TIMESTAMPING_RAW_HARDWARE;
if ((ts_info.so_timestamping & req_hwts_flags) != req_hwts_flags) {
DEBUG_LOG(LOGF_NtpIOLinux, "HW timestamping not supported on %s", req.ifr_name);
close(sock_fd);
return 0;
}
ts_config.flags = 0;
ts_config.tx_type = HWTSTAMP_TX_ON;
ts_config.rx_filter = HWTSTAMP_FILTER_ALL;