#include <winioctl.h>
#include <tap-windows.h>
#include <setupapi.h>
#include <cfgmgr32.h>
#include "buffer.h"
#include "error.h"
#include "mtu.h"
#include "win32.h"
#include "event.h"
#include "proto.h"
#include "misc.h"
#include "networking.h"
#include "ring_buffer.h"

Include dependency graph for tun.h:

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Data Structures
struct	tuntap_options

struct	tuntap

struct	tap_reg

struct	panel_reg

struct	device_instance_id_interface

Macros
#define	WINTUN_COMPONENT_ID "wintun"

#define	TUN_ADAPTER_INDEX_INVALID ((DWORD)-1)

#define	IPW32_SET_ADAPTIVE_DELAY_WINDOW 300

#define	IPW32_SET_ADAPTIVE_TRY_NETSH 20

#define	IPW32_SET_MANUAL 0 /* "--ip-win32 manual" */

#define	IPW32_SET_NETSH 1 /* "--ip-win32 netsh" */

#define	IPW32_SET_IPAPI 2 /* "--ip-win32 ipapi" */

#define	IPW32_SET_DHCP_MASQ 3 /* "--ip-win32 dynamic" */

#define	IPW32_SET_ADAPTIVE 4 /* "--ip-win32 adaptive" */

#define	IPW32_SET_N 5

#define	N_DHCP_ADDR

#define	N_SEARCH_LIST_LEN 10 /* Max # of entries in domin-search list */

#define	TUNNEL_TYPE(tt) ((tt) ? ((tt)->type) : DEV_TYPE_UNDEF)

#define	TUNNEL_TOPOLOGY(tt) ((tt) ? ((tt)->topology) : TOP_UNDEF)

#define	IFCONFIG_BEFORE_TUN_OPEN 0

#define	IFCONFIG_AFTER_TUN_OPEN 1

#define	IFCONFIG_DEFAULT IFCONFIG_AFTER_TUN_OPEN

#define	ROUTE_BEFORE_TUN 0

#define	ROUTE_AFTER_TUN 1

#define	ROUTE_ORDER_DEFAULT ROUTE_AFTER_TUN

Enumerations
enum	windows_driver_type { WINDOWS_DRIVER_UNSPECIFIED, WINDOWS_DRIVER_TAP_WINDOWS6, WINDOWS_DRIVER_WINTUN }

Functions
static bool	tuntap_defined (const struct tuntap *tt)

static bool	tuntap_is_wintun (struct tuntap *tt)

static bool	tuntap_ring_empty (struct tuntap *tt)

void	open_tun (const char dev, const char dev_type, const char dev_node, struct tuntap tt)

void	close_tun (struct tuntap tt, openvpn_net_ctx_t ctx)

int	write_tun (struct tuntap tt, uint8_t buf, int len)

int	read_tun (struct tuntap tt, uint8_t buf, int len)

void	tuncfg (const char dev, const char dev_type, const char dev_node, int persist_mode, const char username, const char groupname, const struct tuntap_options options, openvpn_net_ctx_t *ctx)

const char *	guess_tuntap_dev (const char dev, const char dev_type, const char dev_node, struct gc_arena gc)

struct tuntap *	init_tun (const char dev, const char dev_type, int topology, const char ifconfig_local_parm, const char ifconfig_remote_netmask_parm, const char ifconfig_ipv6_local_parm, int ifconfig_ipv6_netbits_parm, const char ifconfig_ipv6_remote_parm, struct addrinfo local_public, struct addrinfo remote_public, const bool strict_warn, struct env_set es, openvpn_net_ctx_t ctx)

void	init_tun_post (struct tuntap tt, const struct frame frame, const struct tuntap_options *options)

void	do_ifconfig_setenv (const struct tuntap tt, struct env_set es)

void	do_ifconfig (struct tuntap tt, const char ifname, int tun_mtu, const struct env_set es, openvpn_net_ctx_t ctx)
	do_ifconfig - configure the tunnel interface More...

bool	is_dev_type (const char dev, const char dev_type, const char *match_type)

int	dev_type_enum (const char dev, const char dev_type)

const char *	dev_type_string (const char dev, const char dev_type)

const char *	ifconfig_options_string (const struct tuntap tt, bool remote, bool disable, struct gc_arena gc)

bool	is_tun_p2p (const struct tuntap *tt)

void	check_subnet_conflict (const in_addr_t ip, const in_addr_t netmask, const char *prefix)

void	warn_on_use_of_common_subnets (openvpn_net_ctx_t *ctx)

static int	ifconfig_order (void)

static int	route_order (void)

int	ascii2ipset (const char *name)

const char *	ipset2ascii (int index)

const char *	ipset2ascii_all (struct gc_arena *gc)

void	verify_255_255_255_252 (in_addr_t local, in_addr_t remote)

const IP_ADAPTER_INFO *	get_adapter_info_list (struct gc_arena *gc)

const IP_ADAPTER_INFO *	get_tun_adapter (const struct tuntap tt, const IP_ADAPTER_INFO list)

const IP_ADAPTER_INFO *	get_adapter_info (DWORD index, struct gc_arena *gc)

const IP_PER_ADAPTER_INFO *	get_per_adapter_info (const DWORD index, struct gc_arena *gc)

const IP_ADAPTER_INFO *	get_adapter (const IP_ADAPTER_INFO *ai, DWORD index)

bool	is_adapter_up (const struct tuntap tt, const IP_ADAPTER_INFO list)

bool	is_ip_in_adapter_subnet (const IP_ADAPTER_INFO ai, const in_addr_t ip, in_addr_t highest_netmask)

DWORD	adapter_index_of_ip (const IP_ADAPTER_INFO list, const in_addr_t ip, int count, in_addr_t *netmask)

void	show_tap_win_adapters (int msglev, int warnlev)

void	show_adapters (int msglev)

void	tap_allow_nonadmin_access (const char *dev_node)

void	show_valid_win32_tun_subnets (void)

const char *	tap_win_getinfo (const struct tuntap tt, struct gc_arena gc)

void	tun_show_debug (struct tuntap *tt)

bool	dhcp_release_by_adapter_index (const DWORD adapter_index)

bool	dhcp_renew_by_adapter_index (const DWORD adapter_index)

void	fork_register_dns_action (struct tuntap *tt)

void	ipconfig_register_dns (const struct env_set *es)

void	tun_standby_init (struct tuntap *tt)

bool	tun_standby (struct tuntap *tt)

int	tun_read_queue (struct tuntap *tt, int maxsize)

int	tun_write_queue (struct tuntap tt, struct buffer buf)

int	tun_finalize (HANDLE h, struct overlapped_io io, struct buffer buf)

static bool	tuntap_stop (int status)

static bool	tuntap_abort (int status)

static int	tun_write_win32 (struct tuntap tt, struct buffer buf)

static int	read_tun_buffered (struct tuntap tt, struct buffer buf)

static ULONG	wintun_ring_packet_align (ULONG size)

static ULONG	wintun_ring_wrap (ULONG value)

static void	read_wintun (struct tuntap tt, struct buffer buf)

static bool	is_ip_packet_valid (const struct buffer *buf)

static int	write_wintun (struct tuntap tt, struct buffer buf)

static int	write_tun_buffered (struct tuntap tt, struct buffer buf)

static event_t	tun_event_handle (const struct tuntap *tt)

static void	tun_set (struct tuntap tt, struct event_set es, unsigned int rwflags, void arg, unsigned int persistent)

const char *	tun_stat (const struct tuntap tt, unsigned int rwflags, struct gc_arena gc)

Macro Definition Documentation

◆ IFCONFIG_AFTER_TUN_OPEN

#define IFCONFIG_AFTER_TUN_OPEN 1

Definition at line 325 of file tun.h.

Referenced by do_open_tun(), and ifconfig_order().

◆ IFCONFIG_BEFORE_TUN_OPEN

#define IFCONFIG_BEFORE_TUN_OPEN 0

Definition at line 324 of file tun.h.

Referenced by do_open_tun(), and ifconfig_order().

◆ IFCONFIG_DEFAULT

#define IFCONFIG_DEFAULT IFCONFIG_AFTER_TUN_OPEN

Definition at line 327 of file tun.h.

Referenced by ifconfig_order().

◆ IPW32_SET_ADAPTIVE

#define IPW32_SET_ADAPTIVE 4 /* "--ip-win32 adaptive" */

Definition at line 70 of file tun.h.

Referenced by add_option(), close_tun(), do_ifconfig_ipv4(), init_options(), options_postprocess_mutate_invariant(), options_postprocess_verify_ce(), tun_standby(), and tuntap_set_ip_props().

◆ IPW32_SET_ADAPTIVE_DELAY_WINDOW

#define IPW32_SET_ADAPTIVE_DELAY_WINDOW 300

Definition at line 59 of file tun.h.

Referenced by add_option().

◆ IPW32_SET_ADAPTIVE_TRY_NETSH

#define IPW32_SET_ADAPTIVE_TRY_NETSH 20

Definition at line 60 of file tun.h.

Referenced by tun_standby().

◆ IPW32_SET_DHCP_MASQ

#define IPW32_SET_DHCP_MASQ 3 /* "--ip-win32 dynamic" */

Definition at line 69 of file tun.h.

Referenced by add_option(), close_tun(), dhcp_release(), dhcp_renew(), do_ifconfig_ipv4(), init_options(), options_postprocess_mutate_invariant(), options_postprocess_verify_ce(), and tuntap_set_ip_props().

◆ IPW32_SET_IPAPI

#define IPW32_SET_IPAPI 2 /* "--ip-win32 ipapi" */

Definition at line 68 of file tun.h.

Referenced by tuntap_set_ip_addr().

◆ IPW32_SET_MANUAL

#define IPW32_SET_MANUAL 0 /* "--ip-win32 manual" */

Definition at line 66 of file tun.h.

Referenced by close_tun(), do_ifconfig_ipv4(), do_ifconfig_ipv6(), and options_postprocess_mutate_invariant().

◆ IPW32_SET_N

#define IPW32_SET_N 5

Definition at line 71 of file tun.h.

Referenced by ascii2ipset(), ipset2ascii(), and ipset2ascii_all().

◆ IPW32_SET_NETSH

#define IPW32_SET_NETSH 1 /* "--ip-win32 netsh" */

Definition at line 67 of file tun.h.

Referenced by close_tun(), do_ifconfig_ipv4(), and options_postprocess_mutate_invariant().

◆ N_DHCP_ADDR

#define N_DHCP_ADDR

Value:

4 /* Max # of addresses allowed for

* DNS, WINS, etc. */

Definition at line 96 of file tun.h.

Referenced by dhcp_option_address_parse(), and dhcp_option_dns6_parse().

◆ N_SEARCH_LIST_LEN

#define N_SEARCH_LIST_LEN 10 /* Max # of entries in domin-search list */

Definition at line 115 of file tun.h.

Referenced by add_option().

◆ ROUTE_AFTER_TUN

#define ROUTE_AFTER_TUN 1

Definition at line 352 of file tun.h.

Referenced by do_open_tun(), and do_up().

◆ ROUTE_BEFORE_TUN

#define ROUTE_BEFORE_TUN 0

Definition at line 351 of file tun.h.

Referenced by do_open_tun(), and route_order().

◆ ROUTE_ORDER_DEFAULT

#define ROUTE_ORDER_DEFAULT ROUTE_AFTER_TUN

Definition at line 353 of file tun.h.

Referenced by route_order().

◆ TUN_ADAPTER_INDEX_INVALID

#define TUN_ADAPTER_INDEX_INVALID ((DWORD)-1)

◆ TUNNEL_TOPOLOGY

#define TUNNEL_TOPOLOGY ( tt ) ((tt) ? ((tt)->topology) : TOP_UNDEF)

Definition at line 160 of file tun.h.

Referenced by multi_select_virtual_addr(), and multi_set_virtual_addr_env().

◆ TUNNEL_TYPE

#define TUNNEL_TYPE ( tt ) ((tt) ? ((tt)->type) : DEV_TYPE_UNDEF)

Definition at line 157 of file tun.h.

Referenced by drop_if_recursive_routing(), ipv6_send_icmp_unreachable(), multi_add_iroutes(), multi_client_connect_late_setup(), multi_del_iroutes(), multi_process_incoming_link(), multi_process_incoming_tun(), multi_select_virtual_addr(), multi_set_virtual_addr_env(), process_incoming_link_part2(), process_incoming_tun(), process_ip_header(), process_outgoing_tun(), and read_incoming_tun().

◆ WINTUN_COMPONENT_ID

#define WINTUN_COMPONENT_ID "wintun"

Definition at line 45 of file tun.h.

Referenced by get_tap_reg().

Enumeration Type Documentation

◆ windows_driver_type

enum windows_driver_type

Enumerator
WINDOWS_DRIVER_UNSPECIFIED
WINDOWS_DRIVER_TAP_WINDOWS6
WINDOWS_DRIVER_WINTUN

Definition at line 47 of file tun.h.

Function Documentation

◆ adapter_index_of_ip()

DWORD adapter_index_of_ip	(	const IP_ADAPTER_INFO *	list,
		const in_addr_t	ip,
		int *	count,
		in_addr_t *	netmask
	)

Definition at line 4677 of file tun.c.

References D_ROUTE_DEBUG, dmsg, gc_free(), gc_new(), get_interface_metric(), in_addr_t, is_ip_in_adapter_subnet(), print_in_addr_t(), and TUN_ADAPTER_INDEX_INVALID.

Referenced by get_default_gateway(), and test_route().

◆ ascii2ipset()

int ascii2ipset ( const char * name )

Definition at line 6908 of file tun.c.

References ASSERT, IPW32_SET_N, ipset_names::short_form, and SIZE.

Referenced by add_option().

◆ check_subnet_conflict()

void check_subnet_conflict	(	const in_addr_t	ip,
		const in_addr_t	netmask,
		const char *	prefix
	)

Definition at line 536 of file tun.c.

References gc_free(), gc_new(), get_default_gateway(), in_addr_t, M_WARN, msg, and print_in_addr_t().

Referenced by add_routes(), init_tun(), and tuntap_ring_empty().

◆ close_tun()

void close_tun	(	struct tuntap *	tt,
		openvpn_net_ctx_t *	ctx
	)

Definition at line 6780 of file tun.c.

References tuntap::actual_name, ASSERT, clear_tuntap(), D_WIN32_IO_LOW, delete_route_connected_v6_net(), dhcp_release(), tuntap::did_ifconfig_ipv6_setup, tuntap::did_ifconfig_setup, dmsg, tuntap_options::dns6_len, do_address_service(), do_dns_domain_service(), do_dns_service(), free, gc_free(), gc_new(), tuntap::hand, tuntap_options::ip_win32_type, tuntap::ipapi_context, tuntap::ipapi_context_defined, IPW32_SET_ADAPTIVE, IPW32_SET_DHCP_MASQ, IPW32_SET_MANUAL, IPW32_SET_NETSH, M_ERRNO, M_WARN, msg, tuntap_options::msg_channel, netsh_delete_address_dns(), tuntap::options, overlapped_io_close(), rw_handle::read, tuntap::reads, tuntap::rw_handle, status, strerror_win32(), tuntap::windows_driver, WINDOWS_DRIVER_WINTUN, tuntap::wintun_receive_ring, tuntap::wintun_receive_ring_handle, tuntap::wintun_send_ring, tuntap::wintun_send_ring_handle, rw_handle::write, and tuntap::writes.

Referenced by do_close_tun_simple(), ipset2ascii_all(), open_null(), and tuntap_ring_empty().

◆ dev_type_enum()

int dev_type_enum	(	const char *	dev,
		const char *	dev_type
	)

Definition at line 361 of file tun.c.

References DEV_TYPE_NULL, DEV_TYPE_TAP, DEV_TYPE_TUN, DEV_TYPE_UNDEF, and is_dev_type().

Referenced by dev_type_string(), do_init_route_list(), guess_tuntap_dev(), helper_client_server(), init_tun(), multi_init(), open_null(), options_postprocess_mutate_ce(), options_postprocess_mutate_invariant(), options_postprocess_verify_ce(), and tuntap_ring_empty().

◆ dev_type_string()

const char* dev_type_string	(	const char *	dev,
		const char *	dev_type
	)

Definition at line 382 of file tun.c.

References dev_type_enum(), DEV_TYPE_NULL, DEV_TYPE_TAP, and DEV_TYPE_TUN.

Referenced by do_open_tun(), open_null(), options_string(), and tuntap_ring_empty().

◆ dhcp_release_by_adapter_index()

bool dhcp_release_by_adapter_index ( const DWORD adapter_index )

Definition at line 5095 of file tun.c.

References D_TUNTAP_INFO, gc_free(), gc_new(), get_interface_info(), M_WARN, msg, status, and strerror_win32().

Referenced by add_option(), and dhcp_release().

◆ dhcp_renew_by_adapter_index()

bool dhcp_renew_by_adapter_index ( const DWORD adapter_index )

Definition at line 5135 of file tun.c.

References D_TUNTAP_INFO, gc_free(), gc_new(), get_interface_info(), M_WARN, msg, status, and strerror_win32().

Referenced by add_option(), and dhcp_renew().

◆ do_ifconfig()

void do_ifconfig	(	struct tuntap *	tt,
		const char *	ifname,
		int	tun_mtu,
		const struct env_set *	es,
		openvpn_net_ctx_t *	ctx
	)

do_ifconfig - configure the tunnel interface

Parameters

tt	the tuntap interface context
ifname	the human readable interface name
mtu	the MTU value to set the interface to
es	the environment to be used when executing the commands
ctx	the networking API opaque context

Definition at line 1575 of file tun.c.

References D_LOW, tuntap::did_ifconfig_ipv6_setup, tuntap::did_ifconfig_setup, do_ifconfig_ipv4(), do_ifconfig_ipv6(), tuntap::local, tuntap::local_ipv6, management_set_state(), msg, net_ctx_free(), and OPENVPN_STATE_ASSIGN_IP.

Referenced by do_open_tun(), and tuntap_ring_empty().

◆ do_ifconfig_setenv()

void do_ifconfig_setenv	(	const struct tuntap *	tt,
		struct env_set *	es
	)

Definition at line 689 of file tun.c.

References tuntap::did_ifconfig_ipv6_setup, tuntap::did_ifconfig_setup, gc_free(), gc_new(), is_tun_p2p(), tuntap::local, tuntap::local_ipv6, tuntap::netbits_ipv6, print_in6_addr(), print_in_addr_t(), tuntap::remote_ipv6, tuntap::remote_netmask, setenv_int(), and setenv_str().

Referenced by do_open_tun(), init_tun(), and tuntap_ring_empty().

◆ fork_register_dns_action()

void fork_register_dns_action ( struct tuntap * tt )

Definition at line 5977 of file tun.c.

References alloc_buf_gc(), BSTR, buf_printf(), fork_to_self(), gc_free(), gc_new(), tuntap_options::msg_channel, tuntap::options, tuntap_options::register_dns, and register_dns_service().

Referenced by initialization_sequence_completed().

◆ get_adapter()

const IP_ADAPTER_INFO* get_adapter	(	const IP_ADAPTER_INFO *	ai,
		DWORD	index
	)

Definition at line 4482 of file tun.c.

References TUN_ADAPTER_INDEX_INVALID.

Referenced by get_adapter_info(), get_default_gateway(), get_tun_adapter(), and netsh_ifconfig().

◆ get_adapter_info()

const IP_ADAPTER_INFO* get_adapter_info	(	DWORD	index,
		struct gc_arena *	gc
	)

Definition at line 4501 of file tun.c.

References get_adapter(), and get_adapter_info_list().

Referenced by delete_temp_addresses(), dhcp_status(), and get_bypass_addresses().

◆ get_adapter_info_list()

const IP_ADAPTER_INFO* get_adapter_info_list ( struct gc_arena * gc )

Definition at line 4368 of file tun.c.

References gc_malloc(), M_INFO, msg, status, and strerror_win32().

Referenced by get_adapter_index_method_2(), get_adapter_info(), get_default_gateway(), netsh_ifconfig(), show_adapters(), test_routes(), and windows_route_find_if_index().

◆ get_per_adapter_info()

const IP_PER_ADAPTER_INFO* get_per_adapter_info	(	const DWORD	index,
		struct gc_arena *	gc
	)

Definition at line 4395 of file tun.c.

References gc_malloc(), M_INFO, msg, status, strerror_win32(), and TUN_ADAPTER_INDEX_INVALID.

Referenced by get_bypass_addresses(), netsh_ifconfig(), and show_adapter().

◆ get_tun_adapter()

const IP_ADAPTER_INFO* get_tun_adapter	(	const struct tuntap *	tt,
		const IP_ADAPTER_INFO *	list
	)

Definition at line 4586 of file tun.c.

References tuntap::adapter_index, and get_adapter().

Referenced by is_adapter_up(), and windows_route_find_if_index().

◆ guess_tuntap_dev()

const char* guess_tuntap_dev	(	const char *	dev,
		const char *	dev_type,
		const char *	dev_node,
		struct gc_arena *	gc
	)

Definition at line 405 of file tun.c.

References dev_type_enum(), DEV_TYPE_TAP, DEV_TYPE_TUN, and netsh_get_id().

Referenced by do_open_tun(), and tuntap_ring_empty().

◆ ifconfig_options_string()

const char* ifconfig_options_string	(	const struct tuntap *	tt,
		bool	remote,
		bool	disable,
		struct gc_arena *	gc
	)

Definition at line 590 of file tun.c.

References alloc_buf_gc(), BSTR, buf_printf(), DEV_TYPE_TAP, DEV_TYPE_TUN, tuntap::did_ifconfig_setup, tuntap::local, print_in_addr_t(), tuntap::remote_netmask, TOP_SUBNET, tuntap::topology, and tuntap::type.

Referenced by options_string(), and tuntap_ring_empty().

◆ ifconfig_order()

static int ifconfig_order ( void )

inlinestatic

Definition at line 330 of file tun.h.

References IFCONFIG_AFTER_TUN_OPEN, IFCONFIG_BEFORE_TUN_OPEN, and IFCONFIG_DEFAULT.

Referenced by do_open_tun().

◆ init_tun()

struct tuntap* init_tun	(	const char *	dev,
		const char *	dev_type,
		int	topology,
		const char *	ifconfig_local_parm,
		const char *	ifconfig_remote_netmask_parm,
		const char *	ifconfig_ipv6_local_parm,
		int	ifconfig_ipv6_netbits_parm,
		const char *	ifconfig_ipv6_remote_parm,
		struct addrinfo *	local_public,
		struct addrinfo *	remote_public,
		const bool	strict_warn,
		struct env_set *	es,
		openvpn_net_ctx_t *	ctx
	)

◆ init_tun_post()

void init_tun_post	(	struct tuntap *	tt,
		const struct frame *	frame,
		const struct tuntap_options *	options
	)

Definition at line 888 of file tun.c.

References tuntap::adapter_index, M_FATAL, msg, tuntap::options, overlapped_io::overlapped, overlapped_io_init(), rw_handle::read, tuntap::reads, tuntap::rw_handle, TUN_ADAPTER_INDEX_INVALID, tuntap::windows_driver, WINDOWS_DRIVER_WINTUN, tuntap::wintun_receive_ring_handle, tuntap::wintun_send_ring_handle, rw_handle::write, and tuntap::writes.

Referenced by do_init_tun(), and tuntap_ring_empty().

◆ ipconfig_register_dns()

void ipconfig_register_dns ( const struct env_set * es )

Definition at line 5199 of file tun.c.

References argv_free(), argv_msg(), argv_new(), argv_printf(), D_TUNTAP_INFO, get_win_sys_path(), msg, netcmd_semaphore_lock(), netcmd_semaphore_release(), openvpn_execve_check(), and WIN_IPCONFIG_PATH_SUFFIX.

Referenced by add_option().

◆ ipset2ascii()

const char* ipset2ascii ( int index )

Definition at line 6923 of file tun.c.

References ASSERT, IPW32_SET_N, ipset_names::short_form, and SIZE.

Referenced by ipset2ascii_all().

◆ ipset2ascii_all()

const char* ipset2ascii_all ( struct gc_arena * gc )

Definition at line 6937 of file tun.c.

References alloc_buf_gc(), ASSERT, BSTR, buf_printf(), close_tun(), free, ipset2ascii(), IPW32_SET_N, buffer::len, open_tun(), read, read_tun(), SIZE, write, and write_tun().

Referenced by add_option().

◆ is_adapter_up()

bool is_adapter_up	(	const struct tuntap *	tt,
		const IP_ADAPTER_INFO *	list
	)

Definition at line 4599 of file tun.c.

References tuntap::adapter_netmask, get_adapter_ip_netmask(), get_adapter_n_ip_netmask(), get_tun_adapter(), in_addr_t, and tuntap::local.

Referenced by test_routes().

◆ is_dev_type()

bool is_dev_type	(	const char *	dev,
		const char *	dev_type,
		const char *	match_type
	)

Definition at line 343 of file tun.c.

References ASSERT.

Referenced by dev_type_enum(), and tuntap_ring_empty().

◆ is_ip_in_adapter_subnet()

bool is_ip_in_adapter_subnet	(	const IP_ADAPTER_INFO *	ai,
		const in_addr_t	ip,
		in_addr_t *	highest_netmask
	)

Definition at line 4644 of file tun.c.

References get_adapter_ip_netmask(), get_adapter_n_ip_netmask(), and in_addr_t.

Referenced by adapter_index_of_ip(), and windows_route_find_if_index().

◆ is_ip_packet_valid()

static bool is_ip_packet_valid ( const struct buffer * buf )

inlinestatic

Definition at line 573 of file tun.h.

References BLEN, BPTR, OPENVPN_IPH_GET_VER, and openvpn_iphdr::version_len.

Referenced by write_wintun().

◆ is_tun_p2p()

bool is_tun_p2p ( const struct tuntap * tt )

Definition at line 663 of file tun.c.

References DEV_TYPE_NULL, DEV_TYPE_TAP, DEV_TYPE_TUN, M_FATAL, msg, TOP_SUBNET, tuntap::topology, and tuntap::type.

Referenced by do_ifconfig_ipv4(), do_ifconfig_setenv(), init_tun(), open_null(), and tuntap_ring_empty().

◆ open_tun()

void open_tun	(	const char *	dev,
		const char *	dev_type,
		const char *	dev_node,
		struct tuntap *	tt
	)

Definition at line 6656 of file tun.c.

References DEV_TYPE_NULL, DEV_TYPE_TAP, DEV_TYPE_TUN, gc_free(), gc_new(), M_FATAL, M_INFO, M_NOPREFIX, msg, open_null(), tun_open_device(), tuntap_post_open(), and tuntap::type.

Referenced by do_open_tun(), ipset2ascii_all(), open_null(), and tuntap_ring_empty().

◆ read_tun()

int read_tun	(	struct tuntap *	tt,
		uint8_t *	buf,
		int	len
	)

Referenced by ipset2ascii_all(), open_null(), read_incoming_tun(), and tuntap_ring_empty().

◆ read_tun_buffered()

static int read_tun_buffered	(	struct tuntap *	tt,
		struct buffer *	buf
	)

inlinestatic

Definition at line 499 of file tun.h.

References tuntap::hand, tuntap::reads, and tun_finalize().

Referenced by read_incoming_tun().

◆ read_wintun()

static void read_wintun	(	struct tuntap *	tt,
		struct buffer *	buf
	)

inlinestatic

Definition at line 517 of file tun.h.

References overlapped_io::buf_init, buf_write(), tun_ring::data, TUN_PACKET::data, tun_ring::head, buffer::len, M_INFO, msg, tuntap::reads, TUN_PACKET::size, tun_ring::tail, WINTUN_MAX_PACKET_SIZE, WINTUN_RING_CAPACITY, wintun_ring_packet_align(), wintun_ring_wrap(), and tuntap::wintun_send_ring.

Referenced by read_incoming_tun().

◆ route_order()

static int route_order ( void )

inlinestatic

Definition at line 356 of file tun.h.

References ROUTE_BEFORE_TUN, and ROUTE_ORDER_DEFAULT.

Referenced by do_open_tun(), and do_up().

◆ show_adapters()

void show_adapters ( int msglev )

Definition at line 4944 of file tun.c.

References gc_free(), gc_new(), get_adapter_info_list(), msg, and show_adapter().

Referenced by add_option(), check_add_routes(), do_route(), initialization_sequence_completed(), and management_show_net_callback().

◆ show_tap_win_adapters()

void show_tap_win_adapters	(	int	msglev,
		int	warnlev
	)

Definition at line 4090 of file tun.c.

References gc_free(), gc_new(), get_panel_reg(), get_tap_reg(), tap_reg::guid, panel_reg::guid, msg, panel_reg::name, tap_reg::next, panel_reg::next, print_windows_driver(), and tap_reg::windows_driver.

Referenced by add_option().

◆ show_valid_win32_tun_subnets()

void show_valid_win32_tun_subnets ( void )

Definition at line 4057 of file tun.c.

Referenced by add_option().

◆ tap_allow_nonadmin_access()

void tap_allow_nonadmin_access ( const char * dev_node )

Definition at line 4993 of file tun.c.

References at_least_one_tap_win(), gc_free(), gc_new(), get_device_guid(), get_panel_reg(), get_tap_reg(), get_unspecified_device_guid(), M_ERR, M_FATAL, M_WARN, msg, openvpn_snprintf(), and tap_allow_nonadmin_access_handle().

Referenced by add_option().

◆ tap_win_getinfo()

const char* tap_win_getinfo	(	const struct tuntap *	tt,
		struct gc_arena *	gc
	)

Definition at line 6685 of file tun.c.

References alloc_buf_gc(), BCAP, BSTR, tuntap::hand, buffer::len, tuntap::windows_driver, and WINDOWS_DRIVER_TAP_WINDOWS6.

Referenced by print_status(), and x_check_status().

◆ tun_event_handle()

static event_t tun_event_handle ( const struct tuntap * tt )

inlinestatic

Definition at line 690 of file tun.h.

References tuntap::rw_handle.

Referenced by tun_set().

◆ tun_finalize()

int tun_finalize	(	HANDLE	h,
		struct overlapped_io *	io,
		struct buffer *	buf
	)

Definition at line 3564 of file tun.c.

References ASSERT, overlapped_io::buf, D_WIN32_IO, dmsg, overlapped_io::iostate, IOSTATE_IMMEDIATE_RETURN, IOSTATE_INITIAL, IOSTATE_QUEUED, buffer::len, M_ERRNO, msg, overlapped_io::overlapped, overlapped_io::size, status, and overlapped_io::status.

Referenced by read_tun_buffered(), and tun_write_win32().

◆ tun_read_queue()

int tun_read_queue	(	struct tuntap *	tt,
		int	maxsize
	)

Definition at line 3437 of file tun.c.

References ASSERT, BLEN, BPTR, overlapped_io::buf, overlapped_io::buf_init, D_WIN32_IO, dmsg, gc_free(), gc_new(), tuntap::hand, overlapped_io::iostate, IOSTATE_IMMEDIATE_RETURN, IOSTATE_INITIAL, IOSTATE_QUEUED, overlapped_io::overlapped, tuntap::reads, overlapped_io::size, status, overlapped_io::status, and strerror_win32().

Referenced by tun_set().

◆ tun_set()

static void tun_set	(	struct tuntap *	tt,
		struct event_set *	es,
		unsigned int	rwflags,
		void *	arg,
		unsigned int *	persistent
	)

inlinestatic

Definition at line 700 of file tun.h.

References event_ctl(), EVENT_READ, tuntap::rwflags_debug, tun_event_handle(), tun_read_queue(), tun_stat(), tuntap_defined(), tuntap::windows_driver, and WINDOWS_DRIVER_TAP_WINDOWS6.

Referenced by io_wait_dowork(), and multi_tcp_wait().

◆ tun_show_debug()

void tun_show_debug ( struct tuntap * tt )

Definition at line 6703 of file tun.c.

References alloc_buf(), BCAP, BSTR, D_TAP_WIN_DEBUG, free_buf(), tuntap::hand, buffer::len, msg, tuntap::windows_driver, and WINDOWS_DRIVER_TAP_WINDOWS6.

Referenced by pre_select().

◆ tun_standby()

bool tun_standby ( struct tuntap * tt )

Definition at line 5670 of file tun.c.

References tuntap::adapter_index, tuntap::adapter_netmask, tuntap_options::ip_win32_type, IPW32_SET_ADAPTIVE, IPW32_SET_ADAPTIVE_TRY_NETSH, tuntap::local, M_INFO, msg, netsh_ifconfig(), NI_IP_NETMASK, NI_OPTIONS, NI_TEST_FIRST, tuntap::options, and tuntap::standby_iter.

Referenced by check_add_routes(), and write_tun_buffered().

◆ tun_standby_init()

void tun_standby_init ( struct tuntap * tt )

Definition at line 5664 of file tun.c.

References tuntap::standby_iter.

Referenced by do_up(), and write_tun_buffered().

◆ tun_stat()

const char* tun_stat	(	const struct tuntap *	tt,
		unsigned int	rwflags,
		struct gc_arena *	gc
	)

Definition at line 628 of file tun.c.

References alloc_buf_gc(), BSTR, buf_printf(), EVENT_READ, EVENT_WRITE, overlapped_io_state_ascii(), tuntap::reads, tuntap::rwflags_debug, and tuntap::writes.

Referenced by tun_set().

◆ tun_write_queue()

int tun_write_queue	(	struct tuntap *	tt,
		struct buffer *	buf
	)

Definition at line 3501 of file tun.c.

References ASSERT, BLEN, BPTR, overlapped_io::buf, buf_copy(), overlapped_io::buf_init, D_WIN32_IO, dmsg, gc_free(), gc_new(), tuntap::hand, overlapped_io::iostate, IOSTATE_IMMEDIATE_RETURN, IOSTATE_INITIAL, IOSTATE_QUEUED, buffer::len, overlapped_io::overlapped, overlapped_io::size, status, overlapped_io::status, strerror_win32(), and tuntap::writes.

Referenced by tun_write_win32().

◆ tun_write_win32()

static int tun_write_win32	(	struct tuntap *	tt,
		struct buffer *	buf
	)

inlinestatic

Definition at line 474 of file tun.h.

References BLEN, tuntap::hand, overlapped_io_active(), status, tun_finalize(), tun_write_queue(), and tuntap::writes.

Referenced by write_tun_buffered().

◆ tuncfg()

void tuncfg	(	const char *	dev,
		const char *	dev_type,
		const char *	dev_node,
		int	persist_mode,
		const char *	username,
		const char *	groupname,
		const struct tuntap_options *	options,
		openvpn_net_ctx_t *	ctx
	)