ethtool: Add a common function for drivers with transmit time stamping.
Currently, most drivers do not support transmit SO_TIMESTAMPING. For those that do support it, there is one appropriate response to the get_ts_info query. This patch adds a common function providing this response. Signed-off-by: Richard Cochran <richardcochran@gmail.com> Reviewed-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -811,6 +811,7 @@ struct net_device;
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/* Some generic methods drivers may use in their ethtool_ops */
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u32 ethtool_op_get_link(struct net_device *dev);
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int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *eti);
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/**
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* ethtool_rxfh_indir_default - get default value for RX flow hash indirection
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@ -38,6 +38,17 @@ u32 ethtool_op_get_link(struct net_device *dev)
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}
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EXPORT_SYMBOL(ethtool_op_get_link);
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int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *info)
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{
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info->so_timestamping =
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SOF_TIMESTAMPING_TX_SOFTWARE |
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SOF_TIMESTAMPING_RX_SOFTWARE |
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SOF_TIMESTAMPING_SOFTWARE;
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info->phc_index = -1;
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return 0;
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}
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EXPORT_SYMBOL(ethtool_op_get_ts_info);
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/* Handlers for each ethtool command */
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#define ETHTOOL_DEV_FEATURE_WORDS ((NETDEV_FEATURE_COUNT + 31) / 32)
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