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enic: add sw timestamp support

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Add ethtool ops to advertise sw timestamping.
Call skb_tx_timestamp() just before ringing the wq doorbell.

Signed-off-by: Govindarajulu Varadarajan <gvaradar@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Govindarajulu Varadarajan 2017-12-01 10:21:40 -08:00 committed by David S. Miller
parent b8278f2c12
commit fb7516d424
2 changed files with 13 additions and 0 deletions
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12
drivers/net/ethernet/cisco/enic/enic_ethtool.c
View File

@ -18,6 +18,7 @@
#include <linux/netdevice.h>
#include <linux/ethtool.h>
#include <linux/net_tstamp.h>
#include "enic_res.h"
#include "enic.h"
@ -578,6 +579,16 @@ static int enic_set_rxfh(struct net_device *netdev, const u32 *indir,
return __enic_set_rsskey(enic);
}
static int enic_get_ts_info(struct net_device *netdev,
struct ethtool_ts_info *info)
{
info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE |
SOF_TIMESTAMPING_RX_SOFTWARE |
SOF_TIMESTAMPING_SOFTWARE;
return 0;
}
static const struct ethtool_ops enic_ethtool_ops = {
.get_drvinfo = enic_get_drvinfo,
.get_msglevel = enic_get_msglevel,
@ -597,6 +608,7 @@ static const struct ethtool_ops enic_ethtool_ops = {
.get_rxfh = enic_get_rxfh,
.set_rxfh = enic_set_rxfh,
.get_link_ksettings = enic_get_ksettings,
.get_ts_info = enic_get_ts_info,
};
void enic_set_ethtool_ops(struct net_device *netdev)

1
drivers/net/ethernet/cisco/enic/enic_main.c
View File

@ -856,6 +856,7 @@ static netdev_tx_t enic_hard_start_xmit(struct sk_buff *skb,
if (vnic_wq_desc_avail(wq) < MAX_SKB_FRAGS + ENIC_DESC_MAX_SPLITS)
netif_tx_stop_queue(txq);
skb_tx_timestamp(skb);
if (!skb->xmit_more || netif_xmit_stopped(txq))
vnic_wq_doorbell(wq);