On 2026-03-09 3:11 PM, Przemyslaw Korba wrote:
Since upstream commit d9f3e9ecc456 ("net: ptp: introduce
.supported_perout_flags to ptp_clock_info") and commit 7c571ac57d9d ("net:
ptp: introduce .supported_extts_flags to ptp_clock_info"), kernel core now
requires that the driver set the .supported_perout_flags and
.supported_extts_flags fields in PTP clock info. Otherwise, the additional
flags will be rejected by the kernel automatically.

i40e does not support perout flags, so reject any request with perout
flags.

Signed-off-by: Przemyslaw Korba <[email protected]>

Hey Przemek,

**Please don't circumvent our established process of going through internal review before posting to iwl**. You should send to our internal mailing list and get at least one Reviewed-by tag first, before posting to iwl. I think we make exceptions only when there is a strict time constraint and need to get the change out FAST (e.g. bug present in Tony's tree or netdev but not in Linus' tree yet). Reach out internally if you don't know the process and I can share the proper resources.

---
  drivers/net/ethernet/intel/i40e/i40e_ptp.c | 12 +++++++++++-
  1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/i40e/i40e_ptp.c 
b/drivers/net/ethernet/intel/i40e/i40e_ptp.c
index 7bcea7d9720f..8d7958692235 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_ptp.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_ptp.c
@@ -601,10 +601,18 @@ static int i40e_ptp_feature_enable(struct ptp_clock_info 
*ptp,
        /* TODO: Implement flags handling for EXTTS and PEROUT */

Ignoring Simon's comment (not because it doesn't have merit, but because I don't know this part of the driver and the referenced patches), given you just seem to have implemented setting (or maybe handling) these flags in this commit, might be the time to remove this TODO comment? :)

-Dawid

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