diff options
| author | Bert Kenward <bkenward@solarflare.com> | 2022-04-07 18:24:02 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-04-09 00:43:10 +0300 |
| commit | bd4a2697e5e27a33d345827dfbdebb8f28f4aa87 (patch) | |
| tree | e998456ff4e469ee20993a5eba0b8697bf48327a | |
| parent | 58389c00d49cf4f9bee50530901834a8503240b6 (diff) | |
| download | linux-bd4a2697e5e27a33d345827dfbdebb8f28f4aa87.tar.xz | |
sfc: use hardware tx timestamps for more than PTP
The 8000 series and newer NICs all get hardware timestamps from the MAC
and can provide timestamps on a normal TX queue, rather than via a slow
path through the MC. As such we can use this path for any packet where a
hardware timestamp is requested.
This also enables support for PTP over transports other than IPv4+UDP.
Signed-off-by: Bert Kenward <bkenward@solarflare.com>
Signed-off-by: Edward Cree <ecree@xilinx.com>
Link: https://lore.kernel.org/r/510652dc-54b4-0e11-657e-e37ee3ca26a9@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | drivers/net/ethernet/sfc/tx.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/net/ethernet/sfc/tx.c b/drivers/net/ethernet/sfc/tx.c index 6983799e1c05..138bca611341 100644 --- a/drivers/net/ethernet/sfc/tx.c +++ b/drivers/net/ethernet/sfc/tx.c @@ -527,7 +527,8 @@ netdev_tx_t efx_hard_start_xmit(struct sk_buff *skb, /* PTP "event" packet */ if (unlikely(efx_xmit_with_hwtstamp(skb)) && - unlikely(efx_ptp_is_ptp_tx(efx, skb))) { + ((efx_ptp_use_mac_tx_timestamps(efx) && efx->ptp_data) || + unlikely(efx_ptp_is_ptp_tx(efx, skb)))) { /* There may be existing transmits on the channel that are * waiting for this packet to trigger the doorbell write. * We need to send the packets at this point. |