net/zxdh: remove use of variable length array

The only VLA here is for refilling queue, and there already
is logic to limit burst size.

Signed-off-by: Stephen Hemminger <[email protected]>

Author: shemminger

drivers/net/zxdh/meson.build

@@ -25,5 +25,3 @@ sources = files(
         'zxdh_ethdev_ops.c',
         'zxdh_mtr.c',
 )
-
-cflags += no_wvla_cflag

drivers/net/zxdh/zxdh_queue.c

@@ -351,10 +351,8 @@ int32_t zxdh_dev_rx_queue_setup_finish(struct rte_eth_dev *dev, uint16_t logic_q
 		vq->sw_ring[vq->vq_nentries + desc_idx] = &rxvq->fake_mbuf;
 
 	while (!zxdh_queue_full(vq)) {
-		uint16_t free_cnt = vq->vq_free_cnt;
-
-		free_cnt = RTE_MIN(ZXDH_MBUF_BURST_SZ, free_cnt);
-		struct rte_mbuf *new_pkts[free_cnt];
+		struct rte_mbuf *new_pkts[ZXDH_MBUF_BURST_SZ];
+		uint16_t free_cnt = RTE_MIN(ZXDH_MBUF_BURST_SZ, vq->vq_free_cnt);
 
 		if (likely(rte_pktmbuf_alloc_bulk(rxvq->mpool, new_pkts, free_cnt) == 0)) {
 			error = zxdh_enqueue_recv_refill_packed(vq, new_pkts, free_cnt);

drivers/net/zxdh/zxdh_rxtx.c

@@ -902,9 +902,9 @@ zxdh_recv_pkts_packed(void *rx_queue, struct rte_mbuf **rx_pkts,
 refill:
 	/* Allocate new mbuf for the used descriptor */
 	if (likely(!zxdh_queue_full(vq))) {
+		struct rte_mbuf *new_pkts[ZXDH_MBUF_BURST_SZ];
 		/* free_cnt may include mrg descs */
-		uint16_t free_cnt = vq->vq_free_cnt;
-		struct rte_mbuf *new_pkts[free_cnt];
+		uint16_t free_cnt = RTE_MIN(vq->vq_free_cnt, ZXDH_MBUF_BURST_SZ);
 
 		if (!rte_pktmbuf_alloc_bulk(rxvq->mpool, new_pkts, free_cnt)) {
 			error = zxdh_enqueue_recv_refill_packed(vq, new_pkts, free_cnt);