Re: [PATCH net-next 2/4] net: macb: Enable RX timestamping for specific PTPv1 filters
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From: Théo Lebrun <theo.lebrun@bootlin.com>
Date: 2026-09-22 19:02:07
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Hello Kim, On Tue Sep 22, 2026 at 11:10 AM CEST, Kim Wooseok via B4 Relay wrote:
From: Kim Wooseok <redacted>
Selecting a PTPv1 Sync or Delay_Req filter in gem_set_hwtst() returns
success, but leaves rx_bd_control at its initial value of
TSTAMP_DISABLED. The requested filter therefore appears to have been
applied, even though received packets have no hardware timestamps.
The PTPv1 event case already enables timestamping for all frames, so
use that path for Sync and Delay_Req as well. This enables timestamping
for both requests and returns HWTSTAMP_FILTER_ALL to tell the caller
which filter was actually applied.
Fixes: ab91f0a9b5f4 ("net: macb: Add hardware PTP support")
Assisted-by: GPT-6 Astra
Signed-off-by: Kim Wooseok <redacted>Reviewed-by: Théo Lebrun <theo.lebrun@bootlin.com> Thanks, -- Théo Lebrun, Bootlin Embedded Linux and Kernel engineering https://bootlin.com