net/ice: fix tunnel packet Tx descriptor

[ upstream commit c261e7de45d38ddc3b4b8909c35b448c5e1b0fcf ]

The TX descriptor of tunnel packet filled incorrectly due to the MACLEN
is not set.

This patch fixes this issue by setting MACLEN to correctly fill the
TX descriptor.

Fixes: bd70c45 ("net/ice: support Tx checksum offload for tunnel")

Signed-off-by: Shiyang He <shiyangx.he@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>

drivers/net/ice/ice_rxtx.c

@@ -2560,10 +2560,7 @@ ice_txd_enable_checksum(uint64_t ol_flags,
 			union ice_tx_offload tx_offload)
 {
 	/* Set MACLEN */
-	if (ol_flags & RTE_MBUF_F_TX_TUNNEL_MASK)
-		*td_offset |= (tx_offload.outer_l2_len >> 1)
-			<< ICE_TX_DESC_LEN_MACLEN_S;
-	else
+	if (!(ol_flags & RTE_MBUF_F_TX_TUNNEL_MASK))
 		*td_offset |= (tx_offload.l2_len >> 1)
 			<< ICE_TX_DESC_LEN_MACLEN_S;
 
@@ -2824,9 +2821,12 @@ ice_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
 
 		/* Fill in tunneling parameters if necessary */
 		cd_tunneling_params = 0;
-		if (ol_flags & RTE_MBUF_F_TX_TUNNEL_MASK)
+		if (ol_flags & RTE_MBUF_F_TX_TUNNEL_MASK) {
+			td_offset |= (tx_offload.outer_l2_len >> 1)
+				<< ICE_TX_DESC_LEN_MACLEN_S;
 			ice_parse_tunneling_params(ol_flags, tx_offload,
 						   &cd_tunneling_params);
+		}
 
 		/* Enable checksum offloading */
 		if (ol_flags & ICE_TX_CKSUM_OFFLOAD_MASK)