On Tue, 14 Sep 2021 23:08:27 +0500
Usama Nadeem [off-list ref] wrote:

+
+		if (dev_info.rx_offload_capa & DEV_RX_OFFLOAD_UDP_CKSUM)
+			local_port_conf.rxmode.offloads |=
+			DEV_RX_OFFLOAD_UDP_CKSUM;
+
+		else
+			printf("WARNING: UDP Checksum offload not available.\n");
+
+		if (dev_info.rx_offload_capa & DEV_RX_OFFLOAD_TCP_CKSUM)
+			local_port_conf.rxmode.offloads |=
+			DEV_RX_OFFLOAD_TCP_CKSUM;
+
+		else
+			printf("WARNING: TCP Checksum offload not available.\n");

Why does l3fwd care about L4 checksum offload?
The application should really be just a simple L3 router. But it
seems to have become a test for ptype and depends on TCP/UDP.