-int sandbox_eth_raw_os_start(const char *ifname, unsigned char *ethmac,
- struct eth_sandbox_raw_priv *priv);
+/* A struct to mimic if_nameindex but that does not depend on Linux headers */
+struct sandbox_eth_raw_if_nameindex {
+ unsigned int if_index; /* Index of interface (1, 2, ...) */
+ char *if_name; /* Null-terminated name ("eth0", etc.) */
+};
+
+/* Enumerate host network interfaces */
+struct sandbox_eth_raw_if_nameindex *sandbox_eth_raw_if_nameindex(void);
+/* Free the data structure of enumerated network interfaces */
+void sandbox_eth_raw_if_freenameindex(struct sandbox_eth_raw_if_nameindex *ptr);
+
+/*
+ * Check if the interface named "ifname" is a localhost interface or not.
+ * ifname - the interface name on the host to check
+ *
+ * returns - 0 if real interface, 1 if local, negative if error
+ */
+int sandbox_eth_raw_os_is_local(const char *ifname);
+
+/*
+ * Look up the name of the interface based on the ifindex populated in priv.
+ *
+ * Overwrite the host_ifname member in priv based on looking up host_ifindex
+ *
+ * returns - 0 if success, negative if error
+ */
+int sandbox_eth_raw_os_idx_to_name(struct eth_sandbox_raw_priv *priv);
+
+int sandbox_eth_raw_os_start(struct eth_sandbox_raw_priv *priv,
+ unsigned char *ethmac);