igb: Fix trigger of incorrect irq in igb_xsk_wakeup

[ Upstream commit d4c13ab36273a8c318ba06799793cc1f5d9c6fa1 ]

The current implementation in the igb_xsk_wakeup expects
the Rx and Tx queues to share the same irq. This would lead
to triggering of incorrect irq in split irq configuration.
This patch addresses this issue which could impact environments
with 2 active cpu cores
or when the number of queues is reduced to 2 or less

cat /proc/interrupts | grep eno2
 167:          0          0          0          0 IR-PCI-MSIX-0000:08:00.0
 0-edge      eno2
 168:          0          0          0          0 IR-PCI-MSIX-0000:08:00.0
 1-edge      eno2-rx-0
 169:          0          0          0          0 IR-PCI-MSIX-0000:08:00.0
 2-edge      eno2-rx-1
 170:          0          0          0          0 IR-PCI-MSIX-0000:08:00.0
 3-edge      eno2-tx-0
 171:          0          0          0          0 IR-PCI-MSIX-0000:08:00.0
 4-edge      eno2-tx-1

Furthermore it uses the flags input argument to trigger either rx, tx or
both rx and tx irqs as specified in the ndo_xsk_wakeup api documentation

Fixes: 80f6ccf9f116 ("igb: Introduce XSK data structures and helpers")
Signed-off-by: Vivek Behera <vivek.behera@siemens.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Suggested-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Tested-by: Saritha Sanigani <sarithax.sanigani@intel.com> (A Contingent Worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

0 files changed, 0 insertions, 0 deletions