cxgb4/cxgb4vf: Use fl capacity to check if fl needs to be replenished

Use freelist capacity instead of freelist size while checking, if
freelist needs to be refilled
Signed-off-by: NHariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/chelsio/cxgb4/sge.c

@@ -2226,7 +2226,7 @@ static int process_responses(struct sge_rspq *q, int budget)
 		budget_left--;
 	}
 
-	if (q->offset >= 0 && rxq->fl.size - rxq->fl.avail >= 16)
+	if (q->offset >= 0 && fl_cap(&rxq->fl) - rxq->fl.avail >= 16)
 		__refill_fl(q->adap, &rxq->fl);
 	return budget - budget_left;
 }

drivers/net/ethernet/chelsio/cxgb4vf/sge.c

@@ -1864,7 +1864,7 @@ static int process_responses(struct sge_rspq *rspq, int budget)
 	 * for new buffer pointers, refill the Free List.
 	 */
 	if (rspq->offset >= 0 &&
-	    rxq->fl.size - rxq->fl.avail >= 2*FL_PER_EQ_UNIT)
+	    fl_cap(&rxq->fl) - rxq->fl.avail >= 2*FL_PER_EQ_UNIT)
 		__refill_fl(rspq->adapter, &rxq->fl);
 	return budget - budget_left;
 }