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| author | Jacob Keller <jacob.e.keller@intel.com> | 2012-12-05 07:24:46 +0000 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2013-01-23 14:33:28 -0800 |
| commit | 891dc0821d2089afcb04d3cace0a3522093680e7 (patch) | |
| tree | 3300dfc075d53037268f162d540b1b3b4cd18a5d /drivers/net/ethernet/intel/ixgbe/ixgbe.h | |
| parent | 6cb562d6681155190c52ef7603c559c284eef159 (diff) | |
| download | linux-891dc0821d2089afcb04d3cace0a3522093680e7.tar.gz linux-891dc0821d2089afcb04d3cace0a3522093680e7.tar.bz2 linux-891dc0821d2089afcb04d3cace0a3522093680e7.zip | |
ixgbe: Add ptp work item to poll for the Tx timestamp
This patch copies the igb implementation of Tx timestamps, which uses a work
item to poll for the Tx timestamp. In addition it adds a timeout value of 15
seconds, after which it will stop polling.
This is necessary due to an issue with the descriptor being marked done before
the Tx timestamp event has occurred. These two events don't correlate, so using
the done bit on the descriptor as indication that the timestamp must already
have been taken leads to potentially dropped Tx timestamps (especially under
heavy packet load)
Reported-by: Matthew Vick <matthew.vick@intel.com>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/ixgbe/ixgbe.h')
| -rw-r--r-- | drivers/net/ethernet/intel/ixgbe/ixgbe.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe.h b/drivers/net/ethernet/intel/ixgbe/ixgbe.h index 2572e1393e22..261859822ee5 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe.h +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe.h @@ -582,6 +582,9 @@ struct ixgbe_adapter { struct ptp_clock *ptp_clock; struct ptp_clock_info ptp_caps; + struct work_struct ptp_tx_work; + struct sk_buff *ptp_tx_skb; + unsigned long ptp_tx_start; unsigned long last_overflow_check; unsigned long last_rx_ptp_check; spinlock_t tmreg_lock; @@ -752,8 +755,6 @@ extern void ixgbe_ptp_init(struct ixgbe_adapter *adapter); extern void ixgbe_ptp_stop(struct ixgbe_adapter *adapter); extern void ixgbe_ptp_overflow_check(struct ixgbe_adapter *adapter); extern void ixgbe_ptp_rx_hang(struct ixgbe_adapter *adapter); -extern void ixgbe_ptp_tx_hwtstamp(struct ixgbe_q_vector *q_vector, - struct sk_buff *skb); extern void ixgbe_ptp_rx_hwtstamp(struct ixgbe_ring *rx_ring, union ixgbe_adv_rx_desc *rx_desc, struct sk_buff *skb); |