[dpdk-dev] [PATCH] app/testpmd: fix IP checksum calculation

[George Prekas]

Insert a compiler barrier to make sure that the IP checksum calculation
happens after setting all the fields of the IP header.

Signed-off-by: George Prekas <prekageo at amazon.com>
---
 app/test-pmd/flowgen.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/app/test-pmd/flowgen.c b/app/test-pmd/flowgen.c
index acf3e2460..893b4b0b8 100644
--- a/app/test-pmd/flowgen.c
+++ b/app/test-pmd/flowgen.c
@@ -150,6 +150,7 @@ pkt_burst_flow_gen(struct fwd_stream *fs)
 							   next_flow);
 		ip_hdr->total_length	= RTE_CPU_TO_BE_16(pkt_size -
 							   sizeof(*eth_hdr));
+		rte_compiler_barrier();
 		ip_hdr->hdr_checksum	= ip_sum((unaligned_uint16_t *)ip_hdr,
 						 sizeof(*ip_hdr));
 
-- 
2.17.1