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enetc: add software timestamping

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Provide a software TX timestamp and add it to the ethtool query
interface.

skb_tx_timestamp() is also needed if one would like to use PHY
timestamping.

Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Walle
2019-12-10 01:15:37 +01:00
committed by David S. Miller
parent bb9d8454bb
commit 4caefbce06
2 changed files with 3 additions and 0 deletions
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2
drivers/net/ethernet/freescale/enetc/enetc.c
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@@ -227,6 +227,8 @@ static int enetc_map_tx_buffs(struct enetc_bdr *tx_ring, struct sk_buff *skb,
enetc_bdr_idx_inc(tx_ring, &i); enetc_bdr_idx_inc(tx_ring, &i);
tx_ring->next_to_use = i; tx_ring->next_to_use = i;
skb_tx_timestamp(skb);
/* let H/W know BD ring has been updated */ /* let H/W know BD ring has been updated */
enetc_wr_reg(tx_ring->tpir, i); /* includes wmb() */ enetc_wr_reg(tx_ring->tpir, i); /* includes wmb() */

1
drivers/net/ethernet/freescale/enetc/enetc_ethtool.c
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@@ -579,6 +579,7 @@ static int enetc_get_ts_info(struct net_device *ndev,
(1 << HWTSTAMP_FILTER_ALL); (1 << HWTSTAMP_FILTER_ALL);
#else #else
info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE | info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE |
SOF_TIMESTAMPING_TX_SOFTWARE |
SOF_TIMESTAMPING_SOFTWARE; SOF_TIMESTAMPING_SOFTWARE;
#endif #endif
return 0; return 0;