dect
/
linux-2.6
Archived
13
0
Fork 0
Code Releases Activity

ixgbe: remove needless queuing for L4 ptp packets 

This patch removes the queuing that was previously done for L4 packets
as it is not needed. The filter does not provide functionality, and it
is possible that queue setup here could trample settings done else-where
in the driver. (for example it may use a queue which isn't setup.)
Setting of the queue is not required for hardware timestamping and could
have inadverdent side effects.

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>
This commit is contained in:
Jacob Keller 2012-10-24 02:31:47 +00:00 committed by Jeff Kirsher
parent 6ccf7a575c
commit f3444d8b35
1 changed files with 2 additions and 32 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c
View File

@ -633,8 +633,7 @@ int ixgbe_ptp_hwtstamp_ioctl(struct ixgbe_adapter *adapter,
struct hwtstamp_config config;
u32 tsync_tx_ctl = IXGBE_TSYNCTXCTL_ENABLED;
u32 tsync_rx_ctl = IXGBE_TSYNCRXCTL_ENABLED;
u32 tsync_rx_mtrl = 0;
bool is_l4 = false;
u32 tsync_rx_mtrl = PTP_EV_PORT << 16;
bool is_l2 = false;
u32 regval;
@ -657,16 +656,15 @@ int ixgbe_ptp_hwtstamp_ioctl(struct ixgbe_adapter *adapter,
switch (config.rx_filter) {
case HWTSTAMP_FILTER_NONE:
tsync_rx_ctl = 0;
tsync_rx_mtrl = 0;
break;
case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
tsync_rx_ctl |= IXGBE_TSYNCRXCTL_TYPE_L4_V1;
tsync_rx_mtrl = IXGBE_RXMTRL_V1_SYNC_MSG;
is_l4 = true;
break;
case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
tsync_rx_ctl |= IXGBE_TSYNCRXCTL_TYPE_L4_V1;
tsync_rx_mtrl = IXGBE_RXMTRL_V1_DELAY_REQ_MSG;
is_l4 = true;
break;
case HWTSTAMP_FILTER_PTP_V2_EVENT:
case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
@ -679,7 +677,6 @@ int ixgbe_ptp_hwtstamp_ioctl(struct ixgbe_adapter *adapter,
case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
tsync_rx_ctl |= IXGBE_TSYNCRXCTL_TYPE_EVENT_V2;
is_l2 = true;
is_l4 = true;
config.rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT;
break;
case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
@ -713,33 +710,6 @@ int ixgbe_ptp_hwtstamp_ioctl(struct ixgbe_adapter *adapter,
else
IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_1588), 0);
#define PTP_PORT 319
/* L4 Queue Filter[3]: filter by destination port and protocol */
if (is_l4) {
u32 ftqf = (IXGBE_FTQF_PROTOCOL_UDP /* UDP */
| IXGBE_FTQF_POOL_MASK_EN /* Pool not compared */
| IXGBE_FTQF_QUEUE_ENABLE);
ftqf |= ((IXGBE_FTQF_PROTOCOL_COMP_MASK /* protocol check */
& IXGBE_FTQF_DEST_PORT_MASK /* dest check */
& IXGBE_FTQF_SOURCE_PORT_MASK) /* source check */
<< IXGBE_FTQF_5TUPLE_MASK_SHIFT);
IXGBE_WRITE_REG(hw, IXGBE_L34T_IMIR(3),
(3 << IXGBE_IMIR_RX_QUEUE_SHIFT_82599 |
IXGBE_IMIR_SIZE_BP_82599));
/* enable port check */
IXGBE_WRITE_REG(hw, IXGBE_SDPQF(3),
(htons(PTP_PORT) |
htons(PTP_PORT) << 16));
IXGBE_WRITE_REG(hw, IXGBE_FTQF(3), ftqf);
tsync_rx_mtrl |= PTP_PORT << 16;
} else {
IXGBE_WRITE_REG(hw, IXGBE_FTQF(3), 0);
}
/* enable/disable TX */
regval = IXGBE_READ_REG(hw, IXGBE_TSYNCTXCTL);