sfc: use main datapath for HW timestamps if available

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We can now transmit SKBs in 2 ways:
1. Via the MC (for the 7XXX series and earlier), using
   efx_ptp_xmit_skb_mc().
2. Via the TX queues on the dedicated PTP channel (8XXX series and later),
   using efx_ptp_xmit_skb_queue().
The PTP worker thread uses the method set up at probe time. It never
 checked the return code from the old efx_ptp_xmit_skb(), so it now
 returns void.
We increment the TX dropped counter of the device if the transmit fails.

As a result of the probe per channel the remove gets called multiple times.
 Clean up efx->ptp_data properly to avoid the 2nd call blowing up.

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>

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Martin Habets 2018-01-25 17:25:15 +00:00 • committed by David S. Miller

parent 9c3afb33ae

commit 23418dc131

2 changed files with 42 additions and 15 deletions

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9

drivers/net/ethernet/sfc/ef10.c

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48

drivers/net/ethernet/sfc/ptp.c

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