diff options
| author | Jacob Keller <jacob.e.keller@intel.com> | 2017-05-03 20:28:58 +0300 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2017-05-31 13:09:14 +0300 |
| commit | 2955faca0403a4f6029d589f60ff44be09f24859 (patch) | |
| tree | b77b3e9b2a6e383d6c88b618f33fc947209e3909 /drivers/net/ethernet | |
| parent | 69077577af5054da8c8adfb6c1ebb565c2f1f158 (diff) | |
| download | linux-2955faca0403a4f6029d589f60ff44be09f24859.tar.xz | |
i40e: add statistic indicating number of skipped Tx timestamps
The i40e driver can only handle one Tx timestamp request at a time.
This means it is possible for an application timestamp request to be
ignored.
There is no easy way for an administrator to determine if this occurred.
Add a new statistic which tracks this, tx_hwtstamp_skipped.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet')
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e.h | 1 | ||||
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_ethtool.c | 1 | ||||
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_txrx.c | 1 |
3 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e.h b/drivers/net/ethernet/intel/i40e/i40e.h index cdde3cc28fb5..aa46ae016539 100644 --- a/drivers/net/ethernet/intel/i40e/i40e.h +++ b/drivers/net/ethernet/intel/i40e/i40e.h @@ -506,6 +506,7 @@ struct i40e_pf { struct mutex tmreg_lock; /* Used to protect the SYSTIME registers. */ u64 ptp_base_adj; u32 tx_hwtstamp_timeouts; + u32 tx_hwtstamp_skipped; u32 rx_hwtstamp_cleared; u32 latch_event_flags; spinlock_t ptp_rx_lock; /* Used to protect Rx timestamp registers. */ diff --git a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c index 7a8eb486b9ea..35a246f05520 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c +++ b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c @@ -147,6 +147,7 @@ static const struct i40e_stats i40e_gstrings_stats[] = { I40E_PF_STAT("VF_admin_queue_requests", vf_aq_requests), I40E_PF_STAT("arq_overflows", arq_overflows), I40E_PF_STAT("rx_hwtstamp_cleared", rx_hwtstamp_cleared), + I40E_PF_STAT("tx_hwtstamp_skipped", tx_hwtstamp_skipped), I40E_PF_STAT("fdir_flush_cnt", fd_flush_cnt), I40E_PF_STAT("fdir_atr_match", stats.fd_atr_match), I40E_PF_STAT("fdir_atr_tunnel_match", stats.fd_atr_tunnel_match), diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c index 19984be0f70c..c69ee4b0cfe2 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c +++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c @@ -2630,6 +2630,7 @@ static int i40e_tsyn(struct i40e_ring *tx_ring, struct sk_buff *skb, skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; pf->ptp_tx_skb = skb_get(skb); } else { + pf->tx_hwtstamp_skipped++; return 0; } |