diff options
| author | Matthew Vick <matthew.vick@intel.com> | 2012-08-18 07:26:33 +0000 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2012-09-17 02:04:24 -0700 |
| commit | 1f6e8178d6851951876ad8524f4de7a0e6b111be (patch) | |
| tree | e7a363f6216bc4456ae57d4cd1895bcf5f958ce8 /drivers/net/ethernet/intel/igb/igb.h | |
| parent | 201987e3d03fadf0d87980981b7421198e3e5922 (diff) | |
igb: Prevent dropped Tx timestamps via work items and interrupts.
In rare circumstances, it's possible a descriptor writeback will occur
before a timestamped Tx packet will go out on the wire, leading to the
driver believing the hardware failed to timestamp the packet. Schedule a
work item for 82576 and use the available time sync interrupt registers
on 82580 and above to account for this.
Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Matthew Vick <matthew.vick@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/igb/igb.h')
| -rw-r--r-- | drivers/net/ethernet/intel/igb/igb.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/net/ethernet/intel/igb/igb.h b/drivers/net/ethernet/intel/igb/igb.h index 797346998d52..43c8e2914263 100644 --- a/drivers/net/ethernet/intel/igb/igb.h +++ b/drivers/net/ethernet/intel/igb/igb.h @@ -381,6 +381,8 @@ struct igb_adapter { struct ptp_clock *ptp_clock; struct ptp_clock_info ptp_caps; struct delayed_work ptp_overflow_work; + struct work_struct ptp_tx_work; + struct sk_buff *ptp_tx_skb; spinlock_t tmreg_lock; struct cyclecounter cc; struct timecounter tc; @@ -394,6 +396,7 @@ struct igb_adapter { #define IGB_FLAG_QUAD_PORT_A (1 << 2) #define IGB_FLAG_QUEUE_PAIRS (1 << 3) #define IGB_FLAG_DMAC (1 << 4) +#define IGB_FLAG_PTP (1 << 5) /* DMA Coalescing defines */ #define IGB_MIN_TXPBSIZE 20408 @@ -440,8 +443,9 @@ extern void igb_set_fw_version(struct igb_adapter *); #ifdef CONFIG_IGB_PTP extern void igb_ptp_init(struct igb_adapter *adapter); extern void igb_ptp_stop(struct igb_adapter *adapter); -extern void igb_ptp_tx_hwtstamp(struct igb_q_vector *q_vector, - struct igb_tx_buffer *buffer_info); +extern void igb_ptp_reset(struct igb_adapter *adapter); +extern void igb_ptp_tx_work(struct work_struct *work); +extern void igb_ptp_tx_hwtstamp(struct igb_adapter *adapter); extern void igb_ptp_rx_hwtstamp(struct igb_q_vector *q_vector, union e1000_adv_rx_desc *rx_desc, struct sk_buff *skb); |