[PATCH v1] net/memif: fix segfault with Tx burst larger than 255

[Joyce Kong]

There will be a segfault when tx burst size is larger than
256. This is because eth_memif_tx uses an index i which is
uint8_t to count transmitted nb_pkts. Extend i to uint16_t,
the same size as nb_pkts.

Fixes: b5613c8f9d0a ("net/memif: add a Tx fast path")
Cc: sta...@dpdk.org

Reported-by: Liangxing Wang <liangxing.w...@arm.com>
Signed-off-by: Joyce Kong <joyce.k...@arm.com>
Reviewed-by: Ruifeng Wang <ruifeng.w...@arm.com>
---
 drivers/net/memif/rte_eth_memif.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/memif/rte_eth_memif.c 
b/drivers/net/memif/rte_eth_memif.c
index 7cc8c0da91..6f45a00172 100644
--- a/drivers/net/memif/rte_eth_memif.c
+++ b/drivers/net/memif/rte_eth_memif.c
@@ -684,7 +684,7 @@ eth_memif_tx(void *queue, struct rte_mbuf **bufs, uint16_t 
nb_pkts)
                n_free = __atomic_load_n(&ring->head, __ATOMIC_ACQUIRE) - slot;
        }
 
-       uint8_t i;
+       uint16_t i;
        struct rte_mbuf **buf_tmp = bufs;
        mbuf_head = *buf_tmp++;
        struct rte_mempool *mp = mbuf_head->pool;
-- 
2.25.1