+static int parse_user_mac(struct ether_addr *user_mac,
+ const char *value)
+{
+ unsigned int index = 0;
+ char mac_temp[strlen(ETH_TAP_USR_MAC_FMT) + 1], *mac_byte = NULL;
+
+ if (user_mac == NULL || value == NULL)
+ return 0;
+
+ strlcpy(mac_temp, value, sizeof(mac_temp));
+ mac_byte = strtok(mac_temp, ":");
+
+ while ((mac_byte != NULL) &&
+ (strlen(mac_byte) <= 2) &&
+ (strlen(mac_byte) == strspn(mac_byte,
+ ETH_TAP_CMP_MAC_FMT))) {
+ user_mac->addr_bytes[index++] = strtoul(mac_byte, NULL, 16);
+ mac_byte = strtok(NULL, ":");
+ }
+
+ return index;
+}
+
+static int
+set_mac_type(const char *key __rte_unused,
+ const char *value,
+ void *extra_args)
+{
+ struct ether_addr *user_mac = extra_args;
+
+ if (!value)
+ return 0;
+
+ if (!strncasecmp(ETH_TAP_MAC_FIXED, value, strlen(ETH_TAP_MAC_FIXED))) {
+ static int iface_idx;
+
+ /* fixed mac = 00:64:74:61:70:<iface_idx> */
+ memcpy((char *)user_mac->addr_bytes, "\0dtap", ETHER_ADDR_LEN);
+ user_mac->addr_bytes[ETHER_ADDR_LEN - 1] = iface_idx++ + '0';
+ goto success;
+ }
+
+ if (parse_user_mac(user_mac, value) != 6)
+ goto error;
+success:
+ RTE_LOG(DEBUG, PMD, "TAP user MAC param (%s)\n", value);
+ return 0;
+
+error:
+ RTE_LOG(ERR, PMD, "TAP user MAC (%s) is not in format (%s|%s)\n",
+ value, ETH_TAP_MAC_FIXED, ETH_TAP_USR_MAC_FMT);
+ return -1;
+}
+
+/*
+ * Open a TUN interface device. TUN PMD
+ * 1) sets tap_type as false
+ * 2) intakes iface as argument.
+ * 3) as interface is virtual set speed to 10G
+ */
+static int
+rte_pmd_tun_probe(struct rte_vdev_device *dev)
+{
+ const char *name, *params;
+ int ret;
+ struct rte_kvargs *kvlist = NULL;
+ char tun_name[RTE_ETH_NAME_MAX_LEN];
+ char remote_iface[RTE_ETH_NAME_MAX_LEN];
+
+ tap_type = 0;
+ strcpy(tuntap_name, "TUN");
+
+ name = rte_vdev_device_name(dev);
+ params = rte_vdev_device_args(dev);
+ memset(remote_iface, 0, RTE_ETH_NAME_MAX_LEN);
+
+ if (params && (params[0] != '\0')) {
+ RTE_LOG(DEBUG, PMD, "parameters (%s)\n", params);
+
+ kvlist = rte_kvargs_parse(params, valid_arguments);
+ if (kvlist) {
+ if (rte_kvargs_count(kvlist, ETH_TAP_IFACE_ARG) == 1) {
+ ret = rte_kvargs_process(kvlist,
+ ETH_TAP_IFACE_ARG,
+ &set_interface_name,
+ tun_name);
+
+ if (ret == -1)
+ goto leave;
+ }
+ }
+ }
+ pmd_link.link_speed = ETH_SPEED_NUM_10G;
+
+ RTE_LOG(NOTICE, PMD, "Initializing pmd_tun for %s as %s\n",
+ name, tun_name);
+
+ ret = eth_dev_tap_create(dev, tun_name, remote_iface, 0);
+
+leave:
+ if (ret == -1) {
+ RTE_LOG(ERR, PMD, "Failed to create pmd for %s as %s\n",
+ name, tun_name);
+ tun_unit--; /* Restore the unit number */
+ }
+ rte_kvargs_free(kvlist);
+
+ return ret;
+}
+