Signed-off-by: Erez Geva <erez.geva....@siemens.com>
---
sk.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/sk.c b/sk.c
index f18b2bf..de8bf58 100644
--- a/sk.c
+++ b/sk.c
@@ -55,8 +55,17 @@ static int hwts_init(int fd, const char *device, int
rx_filter, int tx_type)
strncpy(ifreq.ifr_name, device, sizeof(ifreq.ifr_name) - 1);
ifreq.ifr_data = (void *) &cfg;
+
+ if (ioctl(fd, SIOCGHWTSTAMP, &ifreq) < 0)
+ {
+ pr_err("ioctl SIOCGHWTSTAMP failed: %m");
+ return -1;
+ }
+
cfg.tx_type = tx_type;
- cfg.rx_filter = rx_filter;
+ // Do not downgrade the rx filter, as it may be used by an AVB/TSN
application
+ if (cfg.rx_filter != HWTSTAMP_FILTER_ALL)
+ cfg.rx_filter = rx_filter;
req = cfg;
err = ioctl(fd, SIOCSHWTSTAMP, &ifreq);
if (err < 0)
--
2.17.1
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