net/mlx5: fix LRO checksum

[dpdk.git] / drivers / net / mlx5 / mlx5_rxtx.c

diff --git a/drivers/net/mlx5/mlx5_rxtx.c b/drivers/net/mlx5/mlx5_rxtx.c
index 4d67925..e4106bf 100644 (file)
--- a/drivers/net/mlx5/mlx5_rxtx.c
+++ b/drivers/net/mlx5/mlx5_rxtx.c
@@ -1529,7 +1529,7 @@ mlx5_lro_update_tcp_hdr(struct rte_tcp_hdr *restrict tcp,
        if (cqe->lro_tcppsh_abort_dupack & MLX5_CQE_LRO_PUSH_MASK)
                tcp->tcp_flags |= RTE_TCP_PSH_FLAG;
        tcp->cksum = 0;
-       csum += rte_raw_cksum(tcp, (tcp->data_off & 0xF) * 4);
+       csum += rte_raw_cksum(tcp, (tcp->data_off >> 4) * 4);
        csum = ((csum & 0xffff0000) >> 16) + (csum & 0xffff);
        csum = (~csum) & 0xffff;
        if (csum == 0)