forked from Minki/linux
0066c8b6f4
Fix PHY delay compensation math in igb_ptp_tx_hwtstamp() and
igb_ptp_rx_rgtstamp. Add PHY delay compensation in
igb_ptp_rx_pktstamp().
In the IGB driver, there are two functions that retrieve timestamps
received by the PHY - igb_ptp_rx_rgtstamp() and igb_ptp_rx_pktstamp().
The previous commit only changed igb_ptp_rx_rgtstamp(), and the change
was incorrect.
There are two instances in which PHY delay compensations should be
made:
- Before the packet transmission over the PHY, the latency between
when the packet is timestamped and transmission of the packets,
should be an add operation, but it is currently a subtract.
- After the packets are received from the PHY, the latency between
the receiving and timestamping of the packets should be a subtract
operation, but it is currently an add.
Signed-off-by: Kshitiz Gupta <kshitiz.gupta@ni.com>
Fixes:
|
||
|---|---|---|
| .. | ||
| e1000_82575.c | ||
| e1000_82575.h | ||
| e1000_defines.h | ||
| e1000_hw.h | ||
| e1000_i210.c | ||
| e1000_i210.h | ||
| e1000_mac.c | ||
| e1000_mac.h | ||
| e1000_mbx.c | ||
| e1000_mbx.h | ||
| e1000_nvm.c | ||
| e1000_nvm.h | ||
| e1000_phy.c | ||
| e1000_phy.h | ||
| e1000_regs.h | ||
| igb_ethtool.c | ||
| igb_hwmon.c | ||
| igb_main.c | ||
| igb_ptp.c | ||
| igb.h | ||
| Makefile | ||