diff options
author | Olof Johansson <olof@lixom.net> | 2014-05-29 13:39:43 -0700 |
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committer | Olof Johansson <olof@lixom.net> | 2014-05-29 13:39:43 -0700 |
commit | 8320857b1d168fd17d7cee48bbfd04aaf6797be8 (patch) | |
tree | 58b31d3d9514df93974216f190824d73f9816d9f /drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c | |
parent | 263c08af44741697202b85e631a964ee85200eb0 (diff) | |
parent | 4b660a7f5c8099d88d1a43d8ae138965112592c7 (diff) |
Merge tag 'v3.15-rc6' into next/defconfig
Linux 3.15-rc6
Diffstat (limited to 'drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c')
-rw-r--r-- | drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c | 40 |
1 files changed, 13 insertions, 27 deletions
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c index 63515a6f67fa..8902ae683457 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c @@ -435,10 +435,8 @@ void ixgbe_ptp_overflow_check(struct ixgbe_adapter *adapter) void ixgbe_ptp_rx_hang(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; - struct ixgbe_ring *rx_ring; u32 tsyncrxctl = IXGBE_READ_REG(hw, IXGBE_TSYNCRXCTL); unsigned long rx_event; - int n; /* if we don't have a valid timestamp in the registers, just update the * timeout counter and exit @@ -450,18 +448,15 @@ void ixgbe_ptp_rx_hang(struct ixgbe_adapter *adapter) /* determine the most recent watchdog or rx_timestamp event */ rx_event = adapter->last_rx_ptp_check; - for (n = 0; n < adapter->num_rx_queues; n++) { - rx_ring = adapter->rx_ring[n]; - if (time_after(rx_ring->last_rx_timestamp, rx_event)) - rx_event = rx_ring->last_rx_timestamp; - } + if (time_after(adapter->last_rx_timestamp, rx_event)) + rx_event = adapter->last_rx_timestamp; /* only need to read the high RXSTMP register to clear the lock */ if (time_is_before_jiffies(rx_event + 5*HZ)) { IXGBE_READ_REG(hw, IXGBE_RXSTMPH); adapter->last_rx_ptp_check = jiffies; - e_warn(drv, "clearing RX Timestamp hang"); + e_warn(drv, "clearing RX Timestamp hang\n"); } } @@ -517,7 +512,7 @@ static void ixgbe_ptp_tx_hwtstamp_work(struct work_struct *work) dev_kfree_skb_any(adapter->ptp_tx_skb); adapter->ptp_tx_skb = NULL; clear_bit_unlock(__IXGBE_PTP_TX_IN_PROGRESS, &adapter->state); - e_warn(drv, "clearing Tx Timestamp hang"); + e_warn(drv, "clearing Tx Timestamp hang\n"); return; } @@ -530,35 +525,22 @@ static void ixgbe_ptp_tx_hwtstamp_work(struct work_struct *work) } /** - * __ixgbe_ptp_rx_hwtstamp - utility function which checks for RX time stamp - * @q_vector: structure containing interrupt and ring information + * ixgbe_ptp_rx_hwtstamp - utility function which checks for RX time stamp + * @adapter: pointer to adapter struct * @skb: particular skb to send timestamp with * * if the timestamp is valid, we convert it into the timecounter ns * value, then store that result into the shhwtstamps structure which * is passed up the network stack */ -void __ixgbe_ptp_rx_hwtstamp(struct ixgbe_q_vector *q_vector, - struct sk_buff *skb) +void ixgbe_ptp_rx_hwtstamp(struct ixgbe_adapter *adapter, struct sk_buff *skb) { - struct ixgbe_adapter *adapter; - struct ixgbe_hw *hw; + struct ixgbe_hw *hw = &adapter->hw; struct skb_shared_hwtstamps *shhwtstamps; u64 regval = 0, ns; u32 tsyncrxctl; unsigned long flags; - /* we cannot process timestamps on a ring without a q_vector */ - if (!q_vector || !q_vector->adapter) - return; - - adapter = q_vector->adapter; - hw = &adapter->hw; - - /* - * Read the tsyncrxctl register afterwards in order to prevent taking an - * I/O hit on every packet. - */ tsyncrxctl = IXGBE_READ_REG(hw, IXGBE_TSYNCRXCTL); if (!(tsyncrxctl & IXGBE_TSYNCRXCTL_VALID)) return; @@ -566,13 +548,17 @@ void __ixgbe_ptp_rx_hwtstamp(struct ixgbe_q_vector *q_vector, regval |= (u64)IXGBE_READ_REG(hw, IXGBE_RXSTMPL); regval |= (u64)IXGBE_READ_REG(hw, IXGBE_RXSTMPH) << 32; - spin_lock_irqsave(&adapter->tmreg_lock, flags); ns = timecounter_cyc2time(&adapter->tc, regval); spin_unlock_irqrestore(&adapter->tmreg_lock, flags); shhwtstamps = skb_hwtstamps(skb); shhwtstamps->hwtstamp = ns_to_ktime(ns); + + /* Update the last_rx_timestamp timer in order to enable watchdog check + * for error case of latched timestamp on a dropped packet. + */ + adapter->last_rx_timestamp = jiffies; } int ixgbe_ptp_get_ts_config(struct ixgbe_adapter *adapter, struct ifreq *ifr) |