From: Jacob Keller Date: Wed, 3 May 2017 17:28:58 +0000 (-0700) Subject: i40e: add statistic indicating number of skipped Tx timestamps X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=2955faca0403a4f6029d589f60ff44be09f24859;p=openwrt%2Fstaging%2Fblogic.git 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 Signed-off-by: Jeff Kirsher --- 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; }