net: net_tstamp: Add unspec field to hwtstamp_source enumeration

Prepare for future support of saving hwtstamp source in PTP xarray by
introducing HWTSTAMP_SOURCE_UNSPEC to hwtstamp_source enum, setting it
to 0 to match old behavior of no source defined.

Signed-off-by: Kory Maincent <kory.maincent@bootlin.com>
Link: https://patch.msgid.link/20240709-feature_ptp_netnext-v17-5-b5317f50df2a@bootlin.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/include/linux/net_tstamp.h b/include/linux/net_tstamp.h
index 3799c79b6c83e99a92d35924cc45dfeaa20a2bd3..662074b08c94c0fe0eca352ba9cdc7ee1c09d132 100644 (file)
--- a/include/linux/net_tstamp.h
+++ b/include/linux/net_tstamp.h
@@ -14,6 +14,7 @@
                                         SOF_TIMESTAMPING_RAW_HARDWARE)
 
 enum hwtstamp_source {
+       HWTSTAMP_SOURCE_UNSPEC,
        HWTSTAMP_SOURCE_NETDEV,
        HWTSTAMP_SOURCE_PHYLIB,
 };