virtio-l2fwd: reset TCP TSO offload

Reset TCP TSO offload config is required before setting
new offload config based on negotiated features.

Signed-off-by: Rahul Bhansali <rbhansali@marvell.com>
Change-Id: Ied220c9255cd4cee43f01863ebd205cde7b2b01c
Reviewed-on: https://sj1git1.cavium.com/c/IP/SW/dataplane/dpu-offload/+/132829
Tested-by: sa_ip-toolkits-Jenkins <sa_ip-toolkits-jenkins@marvell.com>
Reviewed-by: Nithin Kumar Dabilpuram <ndabilpuram@marvell.com>

app/virtio-l2fwd/virtio_l2fwd.c

@@ -2023,18 +2023,19 @@ chksum_offload_configure(uint16_t virtio_devid)
 	uint16_t virt_q_count, portid;
 	int rc;
 
+#define TX_OFFLOADS (RTE_ETH_TX_OFFLOAD_IPV4_CKSUM | RTE_ETH_TX_OFFLOAD_TCP_TSO)
+#define RX_OFFLOADS (RTE_ETH_RX_OFFLOAD_CHECKSUM)
+
 	csum_offload = dao_virtio_netdev_feature_bits_get(virtio_devid) & 0x3;
 	tso_offload = dao_virtio_netdev_feature_bits_get(virtio_devid) & 0XFFFF;
 
 	portid = virtio_map[virtio_devid].id;
 	local_port_conf = &eth_dev_conf[portid];
 	virt_q_count = eth_dev_q_count[portid];
 
-	tx_offloads = local_port_conf->txmode.offloads;
-	rx_offloads = local_port_conf->rxmode.offloads;
+	tx_offloads = local_port_conf->txmode.offloads & ~(TX_OFFLOADS);
+	rx_offloads = local_port_conf->rxmode.offloads & ~(RX_OFFLOADS);
 
-	tx_offloads &= ~(RTE_ETH_TX_OFFLOAD_IPV4_CKSUM);
-	rx_offloads &= ~(RTE_ETH_RX_OFFLOAD_CHECKSUM);
 	if (csum_offload & RTE_BIT64(VIRTIO_NET_F_CSUM)) {
 		tx_offloads |= RTE_ETH_TX_OFFLOAD_IPV4_CKSUM;
 		if (tso_offload & RTE_BIT64(VIRTIO_NET_F_HOST_TSO4) ||