veth: add software timestamping
Provide a software TX timestamp as well as the ethtool query interface and report the software timestamp capabilities. Tested with "ethtool -T" and two linuxptp instances each bound to a tunnel endpoint. Signed-off-by: Michael Walle <michael@walle.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -24,6 +24,7 @@
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#include <linux/filter.h>
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#include <linux/ptr_ring.h>
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#include <linux/bpf_trace.h>
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#include <linux/net_tstamp.h>
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#define DRV_NAME "veth"
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#define DRV_VERSION "1.0"
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@ -114,6 +115,18 @@ static void veth_get_ethtool_stats(struct net_device *dev,
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data[0] = peer ? peer->ifindex : 0;
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}
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static int veth_get_ts_info(struct net_device *dev,
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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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static const struct ethtool_ops veth_ethtool_ops = {
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.get_drvinfo = veth_get_drvinfo,
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.get_link = ethtool_op_get_link,
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@ -121,6 +134,7 @@ static const struct ethtool_ops veth_ethtool_ops = {
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.get_sset_count = veth_get_sset_count,
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.get_ethtool_stats = veth_get_ethtool_stats,
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.get_link_ksettings = veth_get_link_ksettings,
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.get_ts_info = veth_get_ts_info,
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};
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/* general routines */
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@ -201,6 +215,7 @@ static netdev_tx_t veth_xmit(struct sk_buff *skb, struct net_device *dev)
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skb_record_rx_queue(skb, rxq);
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}
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skb_tx_timestamp(skb);
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if (likely(veth_forward_skb(rcv, skb, rq, rcv_xdp) == NET_RX_SUCCESS)) {
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struct pcpu_vstats *stats = this_cpu_ptr(dev->vstats);
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