[dpdk-dev] [PATCH] lib/librte_net: fix bug for ipv4 checksum calculating

guohongzhi guohongzhi1 at huawei.com
Tue May 26 11:16:39 CEST 2020


0xffff is invalid for IPv4 checksum(RFC1624)

Fixes: 6006818cfb26 ("net: new checksum functions")

Reviewed-By: Morten Brørup <mb at smartsharesystems.com>
Acked-by: Olivier Matz <olivier.matz at 6wind.com>

Signed-off-by: guohongzhi <guohongzhi1 at huawei.com>
---
 lib/librte_net/rte_ip.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/librte_net/rte_ip.h b/lib/librte_net/rte_ip.h
index 1ceb7b7..ece2e43 100644
--- a/lib/librte_net/rte_ip.h
+++ b/lib/librte_net/rte_ip.h
@@ -267,7 +267,7 @@ rte_ipv4_cksum(const struct rte_ipv4_hdr *ipv4_hdr)
 {
 	uint16_t cksum;
 	cksum = rte_raw_cksum(ipv4_hdr, sizeof(struct rte_ipv4_hdr));
-	return (cksum == 0xffff) ? cksum : (uint16_t)~cksum;
+	return (uint16_t)~cksum;
 }
 
 /**
-- 
2.21.0.windows.1




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