net/e1000: fix saving of stripped VLAN TCI

[ upstream commit 8d57c9fcfcda3122aa38fba08a029ec248eeb52d ]

When receiving a scattered packet, save the stripped VLAN TCI
in the first mbuf segment where users expect to find it.

Fixes: 8058034 ("e1000: support EM devices (also known as e1000/e1000e)")

Signed-off-by: Visa Hankala <visa@hankala.org>
Acked-by: Wenjun Wu <wenjun1.wu@intel.com>

.mailmap

@@ -1414,6 +1414,7 @@ Vincent Li <vincent.mc.li@gmail.com>
 Vincent S. Cojot <vcojot@redhat.com>
 Vipin Varghese <vipin.varghese@amd.com> <vipin.varghese@intel.com>
 Vipul Ashri <vipul.ashri@oracle.com>
+Visa Hankala <visa@hankala.org>
 Vishal Kulkarni <vishal@chelsio.com>
 Vishwas Danivas <vishwas@pensando.io>
 Vitaliy Mysak <vitaliy.mysak@intel.com>

drivers/net/e1000/em_rxtx.c

@@ -1030,6 +1030,7 @@ eth_em_recv_scattered_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
 		 *    - RX port identifier,
 		 *    - hardware offload data, if any:
 		 *      - IP checksum flag,
+		 *      - VLAN TCI, if any,
 		 *      - error flags.
 		 */
 		first_seg->port = rxq->port_id;
@@ -1039,7 +1040,7 @@ eth_em_recv_scattered_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
 					rx_desc_error_to_pkt_flags(rxd.errors);
 
 		/* Only valid if RTE_MBUF_F_RX_VLAN set in pkt_flags */
-		rxm->vlan_tci = rte_le_to_cpu_16(rxd.special);
+		first_seg->vlan_tci = rte_le_to_cpu_16(rxd.special);
 
 		/* Prefetch data of first segment, if configured to do so. */
 		rte_packet_prefetch((char *)first_seg->buf_addr +