xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

i40e/i40evf: Ignore a driver perceived Tx hang if the number of desc pending < 4

Browse Source 
We are seeing situations where the driver sees a hang with less than 4
desc pending, if the driver chooses to ignore it the queue progresses
forward and the stack never experiences a real hang.
With this patch we will log a stat when this situation happens
"tx_sluggish" will increment and we can see some more details
at a higher debug level. Other than that we will ignore this
particular case of Tx hang.

Change-ID: I7d1d1666d990e2b12f4f6bed0d17d22e1b6410d5
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Anjali Singhai Jain
2014-07-10 07:58:25 +00:00
committed by Jeff Kirsher
parent 30650cc552
commit 810b3ae42f
6 changed files with 19 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/net/ethernet/intel/i40e/i40e.h
View File

@@ -316,6 +316,7 @@ struct i40e_pf {
u32 tx_timeout_count;
u32 tx_timeout_recovery_level;
unsigned long tx_timeout_last_recovery;
u32 tx_sluggish_count;
u32 hw_csum_rx_error;
u32 led_status;
u16 corer_count; /* Core reset count */