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04d4105174
The i40e_detect_recover_hung function uses the i40e_get_tx_pending function to determine if there are packets stalled on the ring. i40e_get_tx_pending calculates the pending packets using the head writeback value and HW tail. If the queue is stopped and we lose the interrupt to update our next_to_clean then we a) won't get another interrupt to clean because queue is stopped b) we won't catch the problem with i40e_detect_recover_hung because the HW values look like there's no packets waiting to be transmitted. Using the SW values we can catch the issue because next_to_clean will be out of sync with head writeback. This has the added benefit being less CPU intensive because we don't need to reach into the hardware to get the values. Signed-off-by: Alan Brady <alan.brady@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> |
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| .. | ||
| e1000 | ||
| e1000e | ||
| fm10k | ||
| i40e | ||
| i40evf | ||
| igb | ||
| igbvf | ||
| ixgb | ||
| ixgbe | ||
| ixgbevf | ||
| e100.c | ||
| Kconfig | ||
| Makefile | ||