1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Copyright (c) 2015 National Instruments
6 * Joe Hershberger <joe.hershberger@ni.com>
10 #define __ETH_RAW_OS_H
15 * struct eth_sandbox_raw_priv - raw socket session
17 * sd: socket descriptor - the open socket during a session
18 * host_ifname: interface name on the host to use for sending our packets
19 * host_ifindex: interface index number on the host
20 * device: struct sockaddr_ll - the host interface packets move to/from
21 * local: 1 or 0 to select the local interface ('lo') or not
22 * local_bindsd: socket descriptor to prevent the kernel from sending
23 * a message to the server claiming the port is
25 * local_bind_udp_port: The UDP port number that we bound to
27 struct eth_sandbox_raw_priv {
29 char host_ifname[IFNAMSIZ];
30 unsigned int host_ifindex;
34 unsigned short local_bind_udp_port;
37 /* A struct to mimic if_nameindex but that does not depend on Linux headers */
38 struct sandbox_eth_raw_if_nameindex {
39 unsigned int if_index; /* Index of interface (1, 2, ...) */
40 char *if_name; /* Null-terminated name ("eth0", etc.) */
43 /* Enumerate host network interfaces */
44 struct sandbox_eth_raw_if_nameindex *sandbox_eth_raw_if_nameindex(void);
45 /* Free the data structure of enumerated network interfaces */
46 void sandbox_eth_raw_if_freenameindex(struct sandbox_eth_raw_if_nameindex *ptr);
49 * Check if the interface named "ifname" is a localhost interface or not.
50 * ifname - the interface name on the host to check
52 * returns - 0 if real interface, 1 if local, negative if error
54 int sandbox_eth_raw_os_is_local(const char *ifname);
57 * Look up the name of the interface based on the ifindex populated in priv.
59 * Overwrite the host_ifname member in priv based on looking up host_ifindex
61 * returns - 0 if success, negative if error
63 int sandbox_eth_raw_os_idx_to_name(struct eth_sandbox_raw_priv *priv);
65 int sandbox_eth_raw_os_start(struct eth_sandbox_raw_priv *priv,
66 unsigned char *ethmac);
67 int sandbox_eth_raw_os_send(void *packet, int length,
68 struct eth_sandbox_raw_priv *priv);
69 int sandbox_eth_raw_os_recv(void *packet, int *length,
70 const struct eth_sandbox_raw_priv *priv);
71 void sandbox_eth_raw_os_stop(struct eth_sandbox_raw_priv *priv);
73 #endif /* __ETH_RAW_OS_H */