net/gve: fix Tx for chained mbuf

The EOP and CSUM bit was not set for all the packets in mbuf chain
causing packet transmission stalls for packets split across
mbuf in chain.

Fixes: 4022f99 ("net/gve: support basic Tx data path for DQO")
Cc: stable@dpdk.org

Signed-off-by: Tathagat Priyadarshi <tathagat.dpdk@gmail.com>
Signed-off-by: Varun Lakkur Ambaji Rao <varun.la@gmail.com>
Acked-by: Joshua Washington <joshwash@google.com>

.mailmap

@@ -1531,6 +1531,7 @@ Vakul Garg <vakul.garg@nxp.com>
 Vamsi Attunuru <vattunuru@marvell.com>
 Vamsi Krishna Atluri <vamsi.atluri@amd.com>
 Vanshika Shukla <vanshika.shukla@nxp.com>
+Varun Lakkur Ambaji Rao <varun.la@gmail.com>
 Varun Sethi <v.sethi@nxp.com>
 Vasily Philipov <vasilyf@mellanox.com>
 Veerasenareddy Burru <vburru@marvell.com>

drivers/net/gve/gve_tx_dqo.c

@@ -89,6 +89,7 @@ gve_tx_burst_dqo(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
 	uint16_t sw_id;
 	uint64_t bytes;
 	uint16_t first_sw_id;
+	uint8_t csum;
 
 	sw_ring = txq->sw_ring;
 	txr = txq->tx_ring;
@@ -114,6 +115,9 @@ gve_tx_burst_dqo(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
 		ol_flags = tx_pkt->ol_flags;
 		nb_used = tx_pkt->nb_segs;
 		first_sw_id = sw_id;
+
+		csum = !!(ol_flags & GVE_TX_CKSUM_OFFLOAD_MASK_DQO);
+
 		do {
 			if (sw_ring[sw_id] != NULL)
 				PMD_DRV_LOG(DEBUG, "Overwriting an entry in sw_ring");
@@ -126,6 +130,8 @@ gve_tx_burst_dqo(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
 			txd->pkt.dtype = GVE_TX_PKT_DESC_DTYPE_DQO;
 			txd->pkt.compl_tag = rte_cpu_to_le_16(first_sw_id);
 			txd->pkt.buf_size = RTE_MIN(tx_pkt->data_len, GVE_TX_MAX_BUF_SIZE_DQO);
+			txd->pkt.end_of_packet = 0;
+			txd->pkt.checksum_offload_enable = csum;
 
 			/* size of desc_ring and sw_ring could be different */
 			tx_id = (tx_id + 1) & mask;
@@ -138,9 +144,6 @@ gve_tx_burst_dqo(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
 		/* fill the last descriptor with End of Packet (EOP) bit */
 		txd->pkt.end_of_packet = 1;
 
-		if (ol_flags & GVE_TX_CKSUM_OFFLOAD_MASK_DQO)
-			txd->pkt.checksum_offload_enable = 1;
-
 		txq->nb_free -= nb_used;
 		txq->nb_used += nb_used;
 	}