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[net-next,3/3] net: dsa: sja1105: Empty the RX timestamping queue on PTP settings change

Message ID 20191227023750.12559-4-olteanv@gmail.com
State Changes Requested
Delegated to: David Miller
Headers show
Series Improvements to SJA1105 DSA RX timestamping | expand

Commit Message

Vladimir Oltean Dec. 27, 2019, 2:37 a.m. UTC 
When disabling PTP timestamping, don't reset the switch with the new
static config until all existing PTP frames have been timestamped on the
RX path or dropped. There's nothing we can do with these afterwards.

Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
---
 drivers/net/dsa/sja1105/sja1105_ptp.c | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/drivers/net/dsa/sja1105/sja1105_ptp.c b/drivers/net/dsa/sja1105/sja1105_ptp.c
index d843c6395e52..a16628cd5f66 100644
--- a/drivers/net/dsa/sja1105/sja1105_ptp.c
+++ b/drivers/net/dsa/sja1105/sja1105_ptp.c
@@ -102,6 +102,8 @@  static int sja1105_change_rxtstamping(struct sja1105_private *priv,
 		kfree_skb(priv->tagger_data.stampable_skb);
 		priv->tagger_data.stampable_skb = NULL;
 	}
+	ptp_cancel_worker_sync(ptp_data->clock);
+	skb_queue_purge(&ptp_data->skb_rxtstamp_queue);
 
 	return sja1105_static_config_reload(priv, SJA1105_RX_HWTSTAMPING);
 }