examples/tep_term: add UDP tunneling port configuration

The port number of UDP tunneling packet is configurable.

For i40e, it has 16 entries in total.

Signed-off-by: Jijiang Liu <jijiang.liu@intel.com>

examples/tep_termination/main.c

@@ -112,6 +112,7 @@
 #define MAC_ADDR_CMP 0xFFFFFFFFFFFFULL
 
 #define CMD_LINE_OPT_NB_DEVICES "nb-devices"
+#define CMD_LINE_OPT_UDP_PORT "udp-port"
 #define CMD_LINE_OPT_RX_RETRY "rx-retry"
 #define CMD_LINE_OPT_RX_RETRY_DELAY "rx-retry-delay"
 #define CMD_LINE_OPT_RX_RETRY_NUM "rx-retry-num"
@@ -136,6 +137,9 @@ struct vpool {
 	uint32_t buf_size;
 } vpool_array[MAX_QUEUES+MAX_QUEUES];
 
+/* UDP tunneling port */
+uint16_t udp_port = 4789;
+
 /* overlay packet operation */
 struct ol_switch_ops overlay_options = {
 	.port_configure = vxlan_port_init,
@@ -250,6 +254,7 @@ static void
 tep_termination_usage(const char *prgname)
 {
 	RTE_LOG(INFO, VHOST_CONFIG, "%s [EAL options] -- -p PORTMASK\n"
+	"               --udp-port: UDP destination port for VXLAN packet\n"
 	"		--nb-devices[1-64]: The number of virtIO device\n"
 	"		-p PORTMASK: Set mask for ports to be used by application\n"
 	"		--rx-retry [0|1]: disable/enable(default) retries on rx."
@@ -275,6 +280,7 @@ tep_termination_parse_args(int argc, char **argv)
 	const char *prgname = argv[0];
 	static struct option long_option[] = {
 		{CMD_LINE_OPT_NB_DEVICES, required_argument, NULL, 0},
+		{CMD_LINE_OPT_UDP_PORT, required_argument, NULL, 0},
 		{CMD_LINE_OPT_RX_RETRY, required_argument, NULL, 0},
 		{CMD_LINE_OPT_RX_RETRY_DELAY, required_argument, NULL, 0},
 		{CMD_LINE_OPT_RX_RETRY_NUM, required_argument, NULL, 0},
@@ -326,6 +332,19 @@ tep_termination_parse_args(int argc, char **argv)
 					enable_retry = ret;
 			}
 
+			if (!strncmp(long_option[option_index].name,
+					CMD_LINE_OPT_UDP_PORT,
+					sizeof(CMD_LINE_OPT_UDP_PORT))) {
+				ret = parse_num_opt(optarg, INT16_MAX);
+				if (ret == -1) {
+					RTE_LOG(INFO, VHOST_CONFIG,
+						"Invalid argument for UDP port [0-N]\n");
+					tep_termination_usage(prgname);
+					return -1;
+				} else
+					udp_port = ret;
+			}
+
 			/* Specify the retries delay time (in useconds) on RX.*/
 			if (!strncmp(long_option[option_index].name,
 				CMD_LINE_OPT_RX_RETRY_DELAY,

examples/tep_termination/vxlan_setup.c

@@ -129,8 +129,12 @@ vxlan_port_init(uint8_t port, struct rte_mempool *mbuf_pool)
 	uint16_t rx_rings, tx_rings = (uint16_t)rte_lcore_count();
 	const uint16_t rx_ring_size = RTE_TEST_RX_DESC_DEFAULT;
 	const uint16_t tx_ring_size = RTE_TEST_TX_DESC_DEFAULT;
+	struct rte_eth_udp_tunnel tunnel_udp;
 	struct rte_eth_rxconf *rxconf;
 	struct rte_eth_txconf *txconf;
+	struct vxlan_conf *pconf = &vxdev;
+
+	pconf->dst_port = udp_port;
 
 	rte_eth_dev_info_get(port, &dev_info);
 
@@ -176,6 +180,12 @@ vxlan_port_init(uint8_t port, struct rte_mempool *mbuf_pool)
 	if (retval < 0)
 		return retval;
 
+	/* Configure UDP port for UDP tunneling */
+	tunnel_udp.udp_port = udp_port;
+	tunnel_udp.prot_type = RTE_TUNNEL_TYPE_VXLAN;
+	retval = rte_eth_dev_udp_tunnel_add(port, &tunnel_udp);
+	if (retval < 0)
+		return retval;
 	rte_eth_macaddr_get(port, &ports_eth_addr[port]);
 	RTE_LOG(INFO, PORT, "Port %u MAC: %02"PRIx8" %02"PRIx8" %02"PRIx8
 			" %02"PRIx8" %02"PRIx8" %02"PRIx8"\n",
@@ -186,13 +196,14 @@ vxlan_port_init(uint8_t port, struct rte_mempool *mbuf_pool)
 			ports_eth_addr[port].addr_bytes[3],
 			ports_eth_addr[port].addr_bytes[4],
 			ports_eth_addr[port].addr_bytes[5]);
+
 	return 0;
 }
 
 static int
 vxlan_rx_process(struct rte_mbuf *pkt)
 {
-	return  decapsulation(pkt);
+	return decapsulation(pkt);
 }
 
 static void

examples/tep_termination/vxlan_setup.h

@@ -35,6 +35,7 @@
 #define VXLAN_SETUP_H_
 
 extern uint16_t nb_devices;
+extern uint16_t udp_port;
 extern uint8_t ports[RTE_MAX_ETHPORTS];
 extern struct ether_addr ports_eth_addr[RTE_MAX_ETHPORTS];