tun.c File Reference

#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <ifaddrs.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <net/if.h>
#include <osmocom/core/utils.h>
#include <osmocom/core/select.h>
#include <osmocom/core/linuxlist.h>
#include <osmocom/core/logging.h>
#include <osmocom/core/write_queue.h>
#include <osmocom/core/socket.h>
#include <osmocom/core/netns.h>
#include <osmocom/core/netdev.h>
#include <osmocom/core/tun.h>

Data Structures
struct	osmo_tundev

Macros
#define	TUN_DEV_PATH   "/dev/net/tun"
#define	TUN_PACKET_MAX   8196
#define	LOGTUN(tun, lvl, fmt, args ...)

Functions
static int	tundev_decaps (struct osmo_tundev *tundev)
static int	tundev_read_cb (struct osmo_fd *fd)
static int	tundev_write_cb (struct osmo_fd *fd, struct msgb *msg)
static int	tundev_ifupdown_ind_cb (struct osmo_netdev *netdev, bool ifupdown)
static int	tundev_dev_name_chg_cb (struct osmo_netdev *netdev, const char *new_dev_name)
static int	tundev_mtu_chg_cb (struct osmo_netdev *netdev, uint32_t new_mtu)
struct osmo_tundev *	osmo_tundev_alloc (void *ctx, const char *name)
	Allocate a new tundev object. More...
void	osmo_tundev_free (struct osmo_tundev *tundev)
	Free an allocated tundev object. More...
static int	tundev_open_fd (struct osmo_tundev *tundev, int flags)
	Open and configure fd of the tunnel device. More...
int	osmo_tundev_open (struct osmo_tundev *tundev)
	Open the tunnel device owned by the tundev object. More...
int	osmo_tundev_close (struct osmo_tundev *tundev)
	Close the tunnel device owned by the tundev object. More...
bool	osmo_tundev_is_open (struct osmo_tundev *tundev)
	Retrieve whether the tundev object is in "opened" state. More...
void	osmo_tundev_set_priv_data (struct osmo_tundev *tundev, void *priv_data)
	Set private user data pointer on the tundev object. More...
void *	osmo_tundev_get_priv_data (struct osmo_tundev *tundev)
	Get private user data pointer from the tundev object. More...
void	osmo_tundev_set_data_ind_cb (struct osmo_tundev *tundev, osmo_tundev_data_ind_cb_t data_ind_cb)
	Set data_ind_cb callback, called when a new packet is received on the tun interface. More...
const char *	osmo_tundev_get_name (const struct osmo_tundev *tundev)
	Get name used to identify the tundev object. More...
int	osmo_tundev_get_fd (const struct osmo_tundev *tundev)
	Get FD associated to the tundev object. More...
int	osmo_tundev_set_dev_name (struct osmo_tundev *tundev, const char *dev_name)
	Set name used to name the tunnel interface created by the tundev object. More...
const char *	osmo_tundev_get_dev_name (const struct osmo_tundev *tundev)
	Get name used to name the tunnel interface created by the tundev object. More...
int	osmo_tundev_set_netns_name (struct osmo_tundev *tundev, const char *netns_name)
	Set name of the network namespace to use when opening the tunnel interface. More...
const char *	osmo_tundev_get_netns_name (const struct osmo_tundev *tundev)
	Get name of network namespace used when opening the tunnel interface. More...
struct osmo_netdev *	osmo_tundev_get_netdev (struct osmo_tundev *tundev)
	Get netdev managing the tunnel interface of tundev. More...
int	osmo_tundev_send (struct osmo_tundev *tundev, struct msgb *msg)
	Submit a packet to the tunnel device managed by the tundev object. More...