diff options
| author | Martin Habets <mhabets@solarflare.com> | 2018-01-25 18:24:56 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-01-25 22:05:14 +0100 |
| commit | 9c3afb33ae587723d2acda044a352670ec8d5b82 (patch) | |
| tree | 60de7b57106b2fd3cfb7f25e70ae4ef8f2c1ad3b /drivers | |
| parent | sfc: handle TX timestamps in the normal data path (diff) | |
| download | linux-9c3afb33ae587723d2acda044a352670ec8d5b82.tar.xz linux-9c3afb33ae587723d2acda044a352670ec8d5b82.zip | |
sfc: add function to determine which TX timestamping method to use
Use MC capability MC_CMD_GET_CAPABILITIES_V2_OUT_TX_MAC_TIMESTAMPING to
detect whether the NIC supports timestamping packets sent out the main
datapath.
Signed-off-by: Martin Habets <mhabets@solarflare.com>
Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/sfc/nic.h | 1 | ||||
| -rw-r--r-- | drivers/net/ethernet/sfc/ptp.c | 10 |
2 files changed, 11 insertions, 0 deletions
diff --git a/drivers/net/ethernet/sfc/nic.h b/drivers/net/ethernet/sfc/nic.h index 54bfbba5ffe6..43a3fa1486ec 100644 --- a/drivers/net/ethernet/sfc/nic.h +++ b/drivers/net/ethernet/sfc/nic.h @@ -471,6 +471,7 @@ static inline void efx_rx_skb_attach_timestamp(struct efx_channel *channel, } void efx_ptp_start_datapath(struct efx_nic *efx); void efx_ptp_stop_datapath(struct efx_nic *efx); +bool efx_ptp_use_mac_tx_timestamps(struct efx_nic *efx); ktime_t efx_ptp_nic_to_kernel_time(struct efx_tx_queue *tx_queue); extern const struct efx_nic_type falcon_a1_nic_type; diff --git a/drivers/net/ethernet/sfc/ptp.c b/drivers/net/ethernet/sfc/ptp.c index 976d38bf6068..096b2f7a4835 100644 --- a/drivers/net/ethernet/sfc/ptp.c +++ b/drivers/net/ethernet/sfc/ptp.c @@ -329,6 +329,16 @@ static int efx_phc_settime(struct ptp_clock_info *ptp, static int efx_phc_enable(struct ptp_clock_info *ptp, struct ptp_clock_request *request, int on); +bool efx_ptp_use_mac_tx_timestamps(struct efx_nic *efx) +{ + struct efx_ef10_nic_data *nic_data = efx->nic_data; + + return ((efx_nic_rev(efx) >= EFX_REV_HUNT_A0) && + (nic_data->datapath_caps2 & + (1 << MC_CMD_GET_CAPABILITIES_V2_OUT_TX_MAC_TIMESTAMPING_LBN) + )); +} + #define PTP_SW_STAT(ext_name, field_name) \ { #ext_name, 0, offsetof(struct efx_ptp_data, field_name) } #define PTP_MC_STAT(ext_name, mcdi_name) \ |