Remove refill budget from iflib

Reviewed by:	gallatin
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D23948

sys/net/iflib.c

@@ -2081,7 +2081,7 @@ _iflib_fl_refill(if_ctx_t ctx, iflib_fl_t fl, int count)
 }
 
 static __inline uint8_t
-__iflib_fl_refill_lt(if_ctx_t ctx, iflib_fl_t fl, int max)
+__iflib_fl_refill_all(if_ctx_t ctx, iflib_fl_t fl)
 {
 	/* we avoid allowing pidx to catch up with cidx as it confuses ixl */
 	int32_t reclaimable = fl->ifl_size - fl->ifl_credits - 1;
@@ -2093,7 +2093,7 @@ __iflib_fl_refill_lt(if_ctx_t ctx, iflib_fl_t fl, int max)
 	MPASS(reclaimable == delta);
 
 	if (reclaimable > 0)
-		return (_iflib_fl_refill(ctx, fl, min(max, reclaimable)));
+		return (_iflib_fl_refill(ctx, fl, reclaimable));
 	return (0);
 }
 
@@ -2812,7 +2812,7 @@ iflib_rxeof(iflib_rxq_t rxq, qidx_t budget)
 		cidxp = &rxq->ifr_fl[0].ifl_cidx;
 	if ((avail = iflib_rxd_avail(ctx, rxq, *cidxp, budget)) == 0) {
 		for (i = 0, fl = &rxq->ifr_fl[0]; i < sctx->isc_nfl; i++, fl++)
-			retval |= __iflib_fl_refill_lt(ctx, fl, budget + 8);
+			retval |= __iflib_fl_refill_all(ctx, fl);
 		DBG_COUNTER_INC(rx_unavail);
 		return (retval);
 	}
@@ -2872,7 +2872,7 @@ iflib_rxeof(iflib_rxq_t rxq, qidx_t budget)
 	CURVNET_RESTORE();
 	/* make sure that we can refill faster than drain */
 	for (i = 0, fl = &rxq->ifr_fl[0]; i < sctx->isc_nfl; i++, fl++)
-		retval |= __iflib_fl_refill_lt(ctx, fl, budget + 8);
+		retval |= __iflib_fl_refill_all(ctx, fl);
 
 	lro_enabled = (if_getcapenable(ifp) & IFCAP_LRO);
 	if (lro_enabled)