d/numam-dpdk
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

net/i40e: improve FDIR programming times

Browse Source 
Previously, the FDIR programming time is +11ms on i40e.
This patch will result in an average programming time of
22usec with a max of 60usec .

Signed-off-by: Michael Lilja <ml@napatech.com>
Acked-by: Beilei Xing <beilei.xing@intel.com>
This commit is contained in:
Michael Lilja 2017-05-17 16:57:57 +02:00 committed by Ferruh Yigit
parent 2f3b88fbab
commit 68d19b480e
1 changed files with 12 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
drivers/net/i40e/i40e_fdir.c
View File

@ -73,9 +73,8 @@
#define I40E_FDIR_IPv6_PAYLOAD_LEN 380
#define I40E_FDIR_UDP_DEFAULT_LEN 400
/* Wait count and interval for fdir filter programming */
#define I40E_FDIR_WAIT_COUNT 10
#define I40E_FDIR_WAIT_INTERVAL_US 1000
/* Wait time for fdir filter programming */
#define I40E_FDIR_MAX_WAIT_US 10000
/* Wait count and interval for fdir filter flush */
#define I40E_FDIR_FLUSH_RETRY 50
@ -1299,28 +1298,27 @@ i40e_fdir_filter_programming(struct i40e_pf *pf,
/* Update the tx tail register */
rte_wmb();
I40E_PCI_REG_WRITE(txq->qtx_tail, txq->tx_tail);
for (i = 0; i < I40E_FDIR_WAIT_COUNT; i++) {
rte_delay_us(I40E_FDIR_WAIT_INTERVAL_US);
for (i = 0; i < I40E_FDIR_MAX_WAIT_US; i++) {
if ((txdp->cmd_type_offset_bsz &
rte_cpu_to_le_64(I40E_TXD_QW1_DTYPE_MASK)) ==
rte_cpu_to_le_64(I40E_TX_DESC_DTYPE_DESC_DONE))
break;
rte_delay_us(1);
}
if (i >= I40E_FDIR_WAIT_COUNT) {
if (i >= I40E_FDIR_MAX_WAIT_US) {
PMD_DRV_LOG(ERR, "Failed to program FDIR filter:"
" time out to get DD on tx queue.");
return -ETIMEDOUT;
}
/* totally delay 10 ms to check programming status*/
rte_delay_us((I40E_FDIR_WAIT_COUNT - i) * I40E_FDIR_WAIT_INTERVAL_US);
if (i40e_check_fdir_programming_status(rxq) < 0) {
PMD_DRV_LOG(ERR, "Failed to program FDIR filter:"
" programming status reported.");
return -ENOSYS;
for (; i < I40E_FDIR_MAX_WAIT_US; i++) {
if (i40e_check_fdir_programming_status(rxq) >= 0)
return 0;
rte_delay_us(1);
}
return 0;
PMD_DRV_LOG(ERR,
"Failed to program FDIR filter: programming status reported.");
return -ETIMEDOUT;
}
/*