[PATCH v2 2/2] app/testpmd: clear stale internal len information

[<skori@marvell.com>]

From: Sunil Kumar Kori <skori@marvell.com>

hdr_lens is used to maintain header lengths after parsing packets.
When port receives different type of packets (say first is VXLAN
packet and second is GRE packet).

For first packet, L2/L3/L4 lengths are set for inner and outer header
alongwith tunnel_len.

Now for second packet, tunnel_len is added more than its size it
contains stale value which further leads to wrong header pointers.

Hence clearing stale information before processing each packet.

Signed-off-by: Sunil Kumar Kori <skori@marvell.com>
---
 app/test-pmd/csumonly.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/app/test-pmd/csumonly.c b/app/test-pmd/csumonly.c
index fa0002d321..203af35cf0 100644
--- a/app/test-pmd/csumonly.c
+++ b/app/test-pmd/csumonly.c
@@ -627,7 +627,6 @@ pkt_burst_checksum_forward(struct fwd_stream *fs)
 	uint32_t rx_bad_outer_l4_csum;
 	uint32_t rx_bad_outer_ip_csum;
 	struct testpmd_offload_info info;
-	struct rte_net_hdr_lens hdr_lens = {0};
 	uint32_t ptype;
 
 	/* receive a burst of packet */
@@ -666,6 +665,8 @@ pkt_burst_checksum_forward(struct fwd_stream *fs)
 #endif
 
 	for (i = 0; i < nb_rx; i++) {
+		struct rte_net_hdr_lens hdr_lens = {0};
+
 		if (likely(i < nb_rx - 1))
 			rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[i + 1],
 						       void *));
-- 
2.43.0