net/iavf: fix setting L2TAG

[ upstream commit 2482a99 ]

Base on HW, if a packet is split into multiple segments, the L2TAG
should only be valid on the last Rx descriptor. So fix it by setting
L2TAG into mbuf when processing the last split packet.

Fixes: 319c421 ("net/avf: enable SSE Rx Tx")

Signed-off-by: Jeff Guo <jia.guo@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>

drivers/net/avf/avf_rxtx_vec_common.h

@@ -33,6 +33,7 @@ reassemble_packets(struct avf_rx_queue *rxq, struct rte_mbuf **rx_bufs,
 			if (!split_flags[buf_idx]) {
 				/* it's the last packet of the set */
 				start->hash = end->hash;
+				start->vlan_tci = end->vlan_tci;
 				start->ol_flags = end->ol_flags;
 				/* we need to strip crc for the whole packet */
 				start->pkt_len -= rxq->crc_len;