MSVC does not support VLAs, replace VLAs with standard C arrays
or alloca(). alloca() is available for all toolchain/platform
combinations officially supported by DPDK.

Signed-off-by: Tyler Retzlaff <roret...@linux.microsoft.com>
---
 drivers/common/idpf/idpf_common_rxtx.c        | 2 +-
 drivers/common/idpf/idpf_common_rxtx_avx512.c | 6 ++++--
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/common/idpf/idpf_common_rxtx.c 
b/drivers/common/idpf/idpf_common_rxtx.c
index 83b131e..da24b78 100644
--- a/drivers/common/idpf/idpf_common_rxtx.c
+++ b/drivers/common/idpf/idpf_common_rxtx.c
@@ -569,7 +569,7 @@
        uint16_t nb_refill = rx_bufq->rx_free_thresh;
        uint16_t nb_desc = rx_bufq->nb_rx_desc;
        uint16_t next_avail = rx_bufq->rx_tail;
-       struct rte_mbuf *nmb[rx_bufq->rx_free_thresh];
+       struct rte_mbuf **nmb = alloca(sizeof(struct rte_mbuf *) * 
rx_bufq->rx_free_thresh);
        uint64_t dma_addr;
        uint16_t delta;
        int i;
diff --git a/drivers/common/idpf/idpf_common_rxtx_avx512.c 
b/drivers/common/idpf/idpf_common_rxtx_avx512.c
index f65e8d5..9131bd6 100644
--- a/drivers/common/idpf/idpf_common_rxtx_avx512.c
+++ b/drivers/common/idpf/idpf_common_rxtx_avx512.c
@@ -1002,7 +1002,8 @@
        uint32_t n;
        uint32_t i;
        int nb_free = 0;
-       struct rte_mbuf *m, *free[txq->rs_thresh];
+       struct rte_mbuf *m;
+       struct rte_mbuf **free = alloca(sizeof(struct rte_mbuf *) * 
txq->rs_thresh);
 
        /* check DD bits on threshold descriptor */
        if ((txq->tx_ring[txq->next_dd].qw1 &
@@ -1319,7 +1320,8 @@
        uint32_t n;
        uint32_t i;
        int nb_free = 0;
-       struct rte_mbuf *m, *free[txq->rs_thresh];
+       struct rte_mbuf *m;
+       struct rte_mbuf **free = alloca(sizeof(struct rte_mbuf *) * 
txq->rs_thresh);
 
        n = txq->rs_thresh;
 
-- 
1.8.3.1

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