This is a note to let you know that I've just added the patch titled
sfc: Check firmware supports Ethernet PTP filter
to the 6.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
sfc-check-firmware-supports-ethernet-ptp-filter.patch
and it can be found in the queue-6.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit dd8b9719e9e765281262a49fd70a69bac95fa26e
Author: Alex Austin <alex.austin@xxxxxxx>
Date: Thu Aug 24 17:46:57 2023 +0100
sfc: Check firmware supports Ethernet PTP filter
[ Upstream commit c4413a20fa6d7c4888009fb7dd391685f196cd36 ]
Not all firmware variants support RSS filters. Do not fail all PTP
functionality when raw ethernet PTP filters fail to insert.
Fixes: e4616f64726b ("sfc: support PTP over Ethernet")
Signed-off-by: Alex Austin <alex.austin@xxxxxxx>
Acked-by: Edward Cree <ecree.xilinx@xxxxxxxxx>
Reviewed-by: Pieter Jansen van Vuuren <pieter.jansen-van-vuuren@xxxxxxx>
Link: https://lore.kernel.org/r/20230824164657.42379-1-alex.austin@xxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/ethernet/sfc/ptp.c b/drivers/net/ethernet/sfc/ptp.c
index 0c40571133cb9..00cf6de3bb2be 100644
--- a/drivers/net/ethernet/sfc/ptp.c
+++ b/drivers/net/ethernet/sfc/ptp.c
@@ -1485,7 +1485,9 @@ static int efx_ptp_insert_multicast_filters(struct efx_nic *efx)
goto fail;
rc = efx_ptp_insert_eth_multicast_filter(efx);
- if (rc < 0)
+
+ /* Not all firmware variants support this filter */
+ if (rc < 0 && rc != -EPROTONOSUPPORT)
goto fail;
}
