ice: Check FDIR program status for AVF

Enable returning FDIR completion status by checking the
ctrl_vsi Rx queue descriptor value.

To enable returning FDIR completion status from ctrl_vsi Rx queue,
COMP_Queue and COMP_Report of FDIR filter programming descriptor
needs to be properly configured. After program request sent to ctrl_vsi
Tx queue, ctrl_vsi Rx queue interrupt will be triggered and
completion status will be returned.

Driver will first issue request in ice_vc_fdir_add_fltr(), then
pass FDIR context to the background task in interrupt service routine
ice_vc_fdir_irq_handler() and finally deal with them in
ice_flush_fdir_ctx(). ice_flush_fdir_ctx() will check the descriptor's
value, fdir context, and then send back virtual channel message to VF
by calling ice_vc_add_fdir_fltr_post(). An additional timer will be
setup in case of hardware interrupt timeout.

Signed-off-by: Yahui Cao <[email protected]>
Signed-off-by: Brett Creeley <[email protected]>
Signed-off-by: Jesse Brandeburg <[email protected]>
Signed-off-by: Qi Zhang <[email protected]>
Tested-by: Chen Bo <[email protected]>
Signed-off-by: Tony Nguyen <[email protected]>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index 9cb5e653b38d..eb895e6db077 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -2071,6 +2071,7 @@ static void ice_service_task(struct work_struct *work)
 	ice_process_vflr_event(pf);
 	ice_clean_mailboxq_subtask(pf);
 	ice_sync_arfs_fltrs(pf);
+	ice_flush_fdir_ctx(pf);
 	/* Clear __ICE_SERVICE_SCHED flag to allow scheduling next event */
 	ice_service_task_complete(pf);
 
@@ -2082,6 +2083,7 @@ static void ice_service_task(struct work_struct *work)
 	    test_bit(__ICE_MDD_EVENT_PENDING, pf->state) ||
 	    test_bit(__ICE_VFLR_EVENT_PENDING, pf->state) ||
 	    test_bit(__ICE_MAILBOXQ_EVENT_PENDING, pf->state) ||
+	    test_bit(__ICE_FD_VF_FLUSH_CTX, pf->state) ||
 	    test_bit(__ICE_ADMINQ_EVENT_PENDING, pf->state))
 		mod_timer(&pf->serv_tmr, jiffies);
 }