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Commit 9c3afb33 authored by Martin Habets's avatar Martin Habets Committed by David S. Miller
Browse files

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: default avatarMartin Habets <mhabets@solarflare.com>
Signed-off-by: default avatarEdward Cree <ecree@solarflare.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b9b603d4

drivers/net/ethernet/sfc/nic.h

+1 −0
Original line number Diff line number Diff line
@@ -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;

drivers/net/ethernet/sfc/ptp.c

+10 −0
Original line number Diff line number Diff line
@@ -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)				\