i40e: Record number TXes cleaned during NAPI

Update i40e_clean_tx_irq to take an out parameter (tx_cleaned) which stores
the number TXs cleaned.

No XDP related TX code is touched. Care has been taken to avoid changing
the control flow of i40e_clean_tx_irq and i40e_napi_poll.
Signed-off-by: NJoe Damato <jdamato@fastly.com>
Acked-by: NJesse Brandeburg <jesse.brandeburg@intel.com>
Acked-by: NSridhar Samudrala <sridhar.samudrala@intel.com>
Tested-by: Gurucharan <gurucharanx.g@intel.com> (A Contingent worker at Intel)
Signed-off-by: NTony Nguyen <anthony.l.nguyen@intel.com>

drivers/net/ethernet/intel/i40e/i40e_txrx.c

@@ -923,11 +923,13 @@ void i40e_detect_recover_hung(struct i40e_vsi *vsi)
  * @vsi: the VSI we care about
  * @tx_ring: Tx ring to clean
  * @napi_budget: Used to determine if we are in netpoll
+ * @tx_cleaned: Out parameter set to the number of TXes cleaned
  *
  * Returns true if there's any budget left (e.g. the clean is finished)
  **/
 static bool i40e_clean_tx_irq(struct i40e_vsi *vsi,
-			      struct i40e_ring *tx_ring, int napi_budget)
+			      struct i40e_ring *tx_ring, int napi_budget,
+			      unsigned int *tx_cleaned)
 {
 	int i = tx_ring->next_to_clean;
 	struct i40e_tx_buffer *tx_buf;
@@ -1048,6 +1050,7 @@ static bool i40e_clean_tx_irq(struct i40e_vsi *vsi,
 		}
 	}
 
+	*tx_cleaned = total_packets;
 	return !!budget;
 }
 
@@ -2689,6 +2692,8 @@ int i40e_napi_poll(struct napi_struct *napi, int budget)
 			       container_of(napi, struct i40e_q_vector, napi);
 	struct i40e_vsi *vsi = q_vector->vsi;
 	struct i40e_ring *ring;
+	bool tx_clean_complete = true;
+	unsigned int tx_cleaned = 0;
 	bool clean_complete = true;
 	bool arm_wb = false;
 	int budget_per_ring;
@@ -2705,10 +2710,10 @@ int i40e_napi_poll(struct napi_struct *napi, int budget)
 	i40e_for_each_ring(ring, q_vector->tx) {
 		bool wd = ring->xsk_pool ?
 			  i40e_clean_xdp_tx_irq(vsi, ring) :
-			  i40e_clean_tx_irq(vsi, ring, budget);
+			  i40e_clean_tx_irq(vsi, ring, budget, &tx_cleaned);
 
 		if (!wd) {
-			clean_complete = false;
+			clean_complete = tx_clean_complete = false;
 			continue;
 		}
 		arm_wb |= ring->arm_wb;