NS-over-FR-over-GRE implementation. More...

#include <errno.h>
#include <string.h>
#include <unistd.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <netinet/ip6.h>
#include <arpa/inet.h>
#include <linux/if.h>
#include <sys/ioctl.h>
#include <netpacket/packet.h>
#include <linux/if_ether.h>
#include <linux/hdlc.h>
#include <linux/hdlc/ioctl.h>
#include <linux/sockios.h>
#include <osmocom/gprs/frame_relay.h>
#include <osmocom/core/byteswap.h>
#include <osmocom/core/stat_item.h>
#include <osmocom/core/logging.h>
#include <osmocom/core/msgb.h>
#include <osmocom/core/select.h>
#include <osmocom/core/socket.h>
#include <osmocom/core/timer.h>
#include <osmocom/core/talloc.h>
#include <osmocom/gprs/gprs_ns2.h>
#include <osmocom/core/netdev.h>
#include <osmocom/gprs/protocol/gsm_08_16.h>
#include <osmocom/gprs/protocol/gsm_08_18.h>
#include "config.h"
#include "common_vty.h"
#include "gprs_ns2_internal.h"

Data Structures
struct	priv_bind

struct	priv_vc

Macros
#define	GRE_PTYPE_FR 0x6559

#define	GRE_PTYPE_IPv4 0x0800

#define	GRE_PTYPE_IPv6 0x86dd

#define	GRE_PTYPE_KAR 0x0000 /* keepalive response */

#define	IPPROTO_GRE 47

#define	E1_LINERATE 2048000

#define	E1_SLOTS_TOTAL 32

#define	E1_SLOTS_USED 31

#define	SUPERCHANNEL_LINERATE (E1_LINERATE*E1_SLOTS_USED)/E1_SLOTS_TOTAL

#define	BIT_DURATION_NS (1000000000 / SUPERCHANNEL_LINERATE)

#define	LMI_Q933A_DLCI 0

Functions
static void	free_bind (struct gprs_ns2_vc_bind *bind)
	clean up all private driver state. More...

static int	fr_dlci_rx_cb (void cb_data, struct msgb msg)

static void	free_vc (struct gprs_ns2_vc *nsvc)

static void	dump_vty (const struct gprs_ns2_vc_bind bind, struct vty vty, bool stats)

static void	fr_dlci_status_cb (struct osmo_fr_dlc dlc, void cb_data, bool active)

static struct priv_vc *	fr_alloc_vc (struct gprs_ns2_vc_bind bind, struct gprs_ns2_vc nsvc, uint16_t dlci)

int	gprs_ns2_find_vc_by_dlci (struct gprs_ns2_vc_bind bind, uint16_t dlci, struct gprs_ns2_vc *result)

static int	fr_netif_ofd_cb (struct osmo_fd *bfd, uint32_t what)

static int	fr_netif_write_one (struct gprs_ns2_vc_bind bind, struct msgb msg)

int	gprs_ns2_is_fr_bind (struct gprs_ns2_vc_bind *bind)
	determine if given bind is for FR-GRE encapsulation. More...

static int	fr_vc_sendmsg (struct gprs_ns2_vc nsvc, struct msgb msg)

static void	enqueue_at_head (struct gprs_ns2_vc_bind bind, struct msgb msg)

static void	enqueue_at_tail (struct gprs_ns2_vc_bind bind, struct msgb msg)

static int	backlog_enqueue_or_free (struct gprs_ns2_vc_bind bind, struct msgb msg)

static void	fr_backlog_timer_cb (void *data)

int	fr_tx_cb (void data, struct msgb msg)

static int	devname2ifindex (const char *ifname)

static int	open_socket (int ifindex, const struct gprs_ns2_vc_bind *nsbind)

static int	gprs_n2_fr_ifupdown_ind_cb (struct osmo_netdev *netdev, bool if_running)

static int	gprs_n2_fr_mtu_chg_cb (struct osmo_netdev *netdev, uint32_t new_mtu)

static int	set_ifupdown (const char *netif, bool up)

static int	setup_device (const char netif, const struct gprs_ns2_vc_bind bind)

int	gprs_ns2_fr_bind (struct gprs_ns2_inst nsi, const char name, const char netif, struct osmo_fr_network fr_network, enum osmo_fr_role fr_role, struct gprs_ns2_vc_bind **result)
	Create a new bind for NS over FR. More...

enum osmo_fr_role	gprs_ns2_fr_bind_role (struct gprs_ns2_vc_bind *bind)
	Return the frame relay role of a bind. More...

const char *	gprs_ns2_fr_bind_netif (struct gprs_ns2_vc_bind *bind)
	Return the network interface of the bind. More...

struct gprs_ns2_vc_bind *	gprs_ns2_fr_bind_by_netif (struct gprs_ns2_inst nsi, const char netif)
	Find NS bind for a given network interface. More...

struct gprs_ns2_vc *	gprs_ns2_fr_connect (struct gprs_ns2_vc_bind bind, struct gprs_ns2_nse nse, uint16_t nsvci, uint16_t dlci)
	Create, connect and activate a new FR-based NS-VC. More...

struct gprs_ns2_vc *	gprs_ns2_fr_connect2 (struct gprs_ns2_vc_bind *bind, uint16_t nsei, uint16_t nsvci, uint16_t dlci)
	Create, connect and activate a new FR-based NS-VC. More...

struct gprs_ns2_vc *	gprs_ns2_fr_nsvc_by_dlci (struct gprs_ns2_vc_bind *bind, uint16_t dlci)
	Return the nsvc by dlci. More...

uint16_t	gprs_ns2_fr_nsvc_dlci (const struct gprs_ns2_vc *nsvc)
	Return the dlci of the nsvc. More...

Variables
struct gprs_ns2_vc_driver	vc_driver_fr

Detailed Description

NS-over-FR-over-GRE implementation.

GPRS Networks Service (NS) messages on the Gb interface. 3GPP TS 08.16 version 8.0.1 Release 1999 / ETSI TS 101 299 V8.0.1 (2002-05) as well as its successor 3GPP TS 48.016

Macro Definition Documentation

◆ BIT_DURATION_NS

#define BIT_DURATION_NS (1000000000 / SUPERCHANNEL_LINERATE)

◆ E1_LINERATE

#define E1_LINERATE 2048000

◆ E1_SLOTS_TOTAL

#define E1_SLOTS_TOTAL 32

◆ E1_SLOTS_USED

#define E1_SLOTS_USED 31

◆ GRE_PTYPE_FR

#define GRE_PTYPE_FR 0x6559

◆ GRE_PTYPE_IPv4

#define GRE_PTYPE_IPv4 0x0800

◆ GRE_PTYPE_IPv6

#define GRE_PTYPE_IPv6 0x86dd

◆ GRE_PTYPE_KAR

#define GRE_PTYPE_KAR 0x0000 /* keepalive response */

◆ IPPROTO_GRE

#define IPPROTO_GRE 47

◆ LMI_Q933A_DLCI

#define LMI_Q933A_DLCI 0

◆ SUPERCHANNEL_LINERATE

#define SUPERCHANNEL_LINERATE (E1_LINERATE*E1_SLOTS_USED)/E1_SLOTS_TOTAL

Function Documentation

◆ backlog_enqueue_or_free()

static int backlog_enqueue_or_free	(	struct gprs_ns2_vc_bind *	bind,
		struct msgb *	msg
	)

static

References priv_bind::backlog, bvci, BVCI_SIGNALLING, priv_bind::dlci, enqueue_at_head(), enqueue_at_tail(), priv_bind::if_running, priv_bind::lmi_msg, LMI_Q933A_DLCI, msg, msgb_free(), msgb_length(), NS_PDUT_UNITDATA, and gprs_ns2_vc_bind::priv.

Referenced by fr_tx_cb().

◆ devname2ifindex()

static int devname2ifindex ( const char * ifname )

static

References OSMO_STRLCPY_ARRAY.

Referenced by gprs_ns2_fr_bind().

◆ dump_vty()

static void dump_vty	(	const struct gprs_ns2_vc_bind *	bind,
		struct vty *	vty,
		bool	stats
	)

static

References priv_bind::if_running, priv_bind::link, llist_for_each_entry, priv_bind::netif, ns2_vty_dump_nsvc(), gprs_ns2_vc_bind::nsvc, osmo_fr_role_str(), gprs_ns2_vc_bind::priv, osmo_fr_link::role, VTY_NEWLINE, and vty_out().

Referenced by gprs_ns2_fr_bind().

◆ enqueue_at_head()

static void enqueue_at_head	(	struct gprs_ns2_vc_bind *	bind,
		struct msgb *	msg
	)

static

References priv_bind::backlog, priv_bind::list, llist_add(), msg, NS2_BIND_STAT_BACKLOG_LEN, osmo_stat_item_group_get_item(), osmo_stat_item_inc(), osmo_timer_schedule(), gprs_ns2_vc_bind::priv, priv_bind::retry_us, gprs_ns2_vc_bind::statg, and priv_bind::timer.

Referenced by backlog_enqueue_or_free().

◆ enqueue_at_tail()

static void enqueue_at_tail	(	struct gprs_ns2_vc_bind *	bind,
		struct msgb *	msg
	)

static

References priv_bind::backlog, priv_bind::list, llist_add_tail(), msg, NS2_BIND_STAT_BACKLOG_LEN, osmo_stat_item_group_get_item(), osmo_stat_item_inc(), osmo_timer_schedule(), gprs_ns2_vc_bind::priv, priv_bind::retry_us, gprs_ns2_vc_bind::statg, and priv_bind::timer.

Referenced by backlog_enqueue_or_free().

◆ fr_alloc_vc()

static struct priv_vc * fr_alloc_vc	(	struct gprs_ns2_vc_bind *	bind,
		struct gprs_ns2_vc *	nsvc,
		uint16_t	dlci
	)

static

References osmo_fr_dlc::cb_data, priv_vc::dlc, priv_vc::dlci, fr_dlci_rx_cb(), fr_dlci_status_cb(), gprs_ns2_is_fr_bind(), priv_bind::link, OSMO_ASSERT, osmo_fr_dlc_alloc(), gprs_ns2_vc::priv, gprs_ns2_vc_bind::priv, osmo_fr_dlc::rx_cb, and osmo_fr_dlc::status_cb.

Referenced by gprs_ns2_fr_connect().

◆ fr_backlog_timer_cb()

static void fr_backlog_timer_cb ( void * data )

static

References priv_bind::backlog, data, fr_netif_write_one(), priv_bind::list, llist_add(), llist_empty(), priv_bind::lmi_msg, msg, msgb_dequeue(), NS2_BIND_STAT_BACKLOG_LEN, osmo_stat_item_dec(), osmo_stat_item_group_get_item(), osmo_timer_schedule(), gprs_ns2_vc_bind::priv, priv_bind::retry_us, gprs_ns2_vc_bind::statg, and priv_bind::timer.

Referenced by gprs_ns2_fr_bind().

◆ fr_dlci_rx_cb()

static int fr_dlci_rx_cb	(	void *	cb_data,
		struct msgb *	msg
	)

static

References msg, and ns2_recv_vc().

Referenced by fr_alloc_vc().

◆ fr_dlci_status_cb()

static void fr_dlci_status_cb	(	struct osmo_fr_dlc *	dlc,
		void *	cb_data,
		bool	active
	)

static

References ns2_vc_force_unconfigured(), and ns2_vc_fsm_start().

Referenced by fr_alloc_vc().

◆ fr_netif_ofd_cb()

static int fr_netif_ofd_cb	(	struct osmo_fd *	bfd,
		uint32_t	what
	)

static

References osmo_fd::data, osmo_fd::fd, priv_bind::ifindex, priv_bind::link, LOGBIND, LOGL_ERROR, msg, msgb_alloc(), msgb_free(), msgb_put(), NS_ALLOC_SIZE, OSMO_FD_READ, osmo_fr_rx(), and gprs_ns2_vc_bind::priv.

Referenced by gprs_ns2_fr_bind().

◆ fr_netif_write_one()

static int fr_netif_write_one	(	struct gprs_ns2_vc_bind *	bind,
		struct msgb *	msg
	)

static

References priv_bind::backlog, BIT_DURATION_NS, osmo_fd::fd, len(), LOGBIND, LOGL_ERROR, msg, msgb_data(), msgb_free(), msgb_length(), priv_bind::ofd, gprs_ns2_vc_bind::priv, and priv_bind::retry_us.

Referenced by fr_backlog_timer_cb(), and fr_tx_cb().

◆ fr_tx_cb()

int fr_tx_cb	(	void *	data,
		struct msgb *	msg
	)

References priv_bind::backlog, backlog_enqueue_or_free(), data, fr_netif_write_one(), priv_bind::list, llist_empty(), msg, and gprs_ns2_vc_bind::priv.

Referenced by gprs_ns2_fr_bind().

◆ fr_vc_sendmsg()

static int fr_vc_sendmsg	(	struct gprs_ns2_vc *	nsvc,
		struct msgb *	msg
	)

static

References priv_vc::dlc, msg, msgb_length(), NS_CTR_BYTES_OUT, NS_CTR_BYTES_OUT_DROP, NS_CTR_PKTS_OUT, NS_CTR_PKTS_OUT_DROP, osmo_fr_tx_dlc(), OSMO_LIKELY, gprs_ns2_vc::priv, RATE_CTR_ADD_NS, and RATE_CTR_INC_NS.

Referenced by gprs_ns2_fr_bind().

◆ free_bind()

static void free_bind ( struct gprs_ns2_vc_bind * bind )

static

clean up all private driver state.

Should be only called by gprs_ns2_free_bind()

References priv_bind::backlog, gprs_ns2_is_fr_bind(), priv_bind::link, list, priv_bind::list, llist_empty(), llist_for_each_entry_safe, priv_bind::lmi_msg, msg, msgb_free(), priv_bind::netdev, gprs_ns2_vc_bind::nsvc, priv_bind::ofd, OSMO_ASSERT, osmo_fd_close(), osmo_fr_link_free(), osmo_netdev_free(), osmo_timer_del(), gprs_ns2_vc_bind::priv, and priv_bind::timer.

◆ free_vc()

static void free_vc ( struct gprs_ns2_vc * nsvc )

static

References gprs_ns2_vc::bind, gprs_ns2_is_fr_bind(), OSMO_ASSERT, and gprs_ns2_vc::priv.

Referenced by gprs_ns2_fr_bind().

◆ gprs_n2_fr_ifupdown_ind_cb()

static int gprs_n2_fr_ifupdown_ind_cb	(	struct osmo_netdev *	netdev,
		bool	if_running
	)

static

References priv_bind::backlog, priv_bind::if_running, list, priv_bind::list, llist_for_each_entry_safe, priv_bind::lmi_msg, LOGBIND, LOGL_NOTICE, msg, msgb_free(), priv_bind::netif, osmo_netdev_get_priv_data(), osmo_timer_del(), osmo_timer_schedule(), gprs_ns2_vc_bind::priv, priv_bind::retry_us, and priv_bind::timer.

Referenced by gprs_ns2_fr_bind().

◆ gprs_n2_fr_mtu_chg_cb()

static int gprs_n2_fr_mtu_chg_cb	(	struct osmo_netdev *	netdev,
		uint32_t	new_mtu
	)

static

References priv_bind::if_running, list, llist_for_each_entry, LOGBIND, LOGL_INFO, gprs_ns2_vc_bind::mtu, ns2_nse_update_mtu(), gprs_ns2_inst::nse, gprs_ns2_vc_bind::nsi, osmo_netdev_get_priv_data(), and gprs_ns2_vc_bind::priv.

Referenced by gprs_ns2_fr_bind().

◆ gprs_ns2_find_vc_by_dlci()

int gprs_ns2_find_vc_by_dlci	(	struct gprs_ns2_vc_bind *	bind,
		uint16_t	dlci,
		struct gprs_ns2_vc **	result
	)

References priv_vc::dlci, gprs_ns2_is_fr_bind(), llist_for_each_entry, gprs_ns2_vc_bind::nsvc, OSMO_ASSERT, and gprs_ns2_vc::priv.

◆ gprs_ns2_fr_bind()

int gprs_ns2_fr_bind	(	struct gprs_ns2_inst *	nsi,
		const char *	name,
		const char *	netif,
		struct osmo_fr_network *	fr_network,
		enum osmo_fr_role	fr_role,
		struct gprs_ns2_vc_bind **	result
	)

Create a new bind for NS over FR.

Parameters

[in]	nsi	NS instance in which to create the bind
[in]	netif	Network interface to bind to
[in]	fr_network
[in]	fr_role
[out]	result	pointer to the created bind or if a bind with the name exists return the bind.

Returns: 0 on success; negative on error. -EALREADY returned in case a bind with the name exists

References priv_bind::backlog, osmo_fr_link::cb_data, devname2ifindex(), gprs_ns2_vc_bind::driver, dump_vty(), gprs_ns2_vc_bind::dump_vty, osmo_fd::fd, fr_backlog_timer_cb(), fr_netif_ofd_cb(), fr_tx_cb(), fr_vc_sendmsg(), FRAME_RELAY_SDU, free_vc(), gprs_ns2_vc_bind::free_vc, gprs_n2_fr_ifupdown_ind_cb(), gprs_n2_fr_mtu_chg_cb(), gprs_ns2_bind_by_name(), gprs_ns2_free_bind(), GPRS_NS2_LL_FR, priv_bind::ifindex, INIT_LLIST_HEAD, priv_bind::link, priv_bind::list, gprs_ns2_vc_bind::ll, LOGBIND, LOGL_ERROR, gprs_ns2_vc_bind::mtu, name, priv_bind::netdev, priv_bind::netif, ns2_bind_alloc(), priv_bind::ofd, open_socket(), OSMO_FD_READ, osmo_fd_register(), osmo_fd_setup(), osmo_fr_link_alloc(), osmo_fr_link_free(), osmo_netdev_alloc(), osmo_netdev_free(), osmo_netdev_register(), osmo_netdev_set_ifindex(), osmo_netdev_set_ifupdown_ind_cb(), osmo_netdev_set_mtu_chg_cb(), osmo_netdev_set_priv_data(), OSMO_STRLCPY_ARRAY, osmo_timer_setup(), gprs_ns2_vc_bind::priv, priv_bind::retry_us, gprs_ns2_vc_bind::send_vc, setup_device(), priv_bind::timer, gprs_ns2_vc_bind::transfer_capability, osmo_fr_link::tx_cb, and vc_driver_fr.

Referenced by DEFUN().

◆ gprs_ns2_fr_bind_by_netif()

struct gprs_ns2_vc_bind * gprs_ns2_fr_bind_by_netif	(	struct gprs_ns2_inst *	nsi,
		const char *	netif
	)

Find NS bind for a given network interface.

Parameters

[in]	nsi	NS instance
[in]	netif	the network interface to search for

Returns: the bind or NULL if not found

References gprs_ns2_inst::binding, gprs_ns2_fr_bind_netif(), gprs_ns2_is_fr_bind(), list, llist_for_each_entry, gprs_ns2_vc_bind::nsi, and OSMO_ASSERT.

Referenced by DEFUN().

◆ gprs_ns2_fr_bind_netif()

const char * gprs_ns2_fr_bind_netif ( struct gprs_ns2_vc_bind * bind )

Return the network interface of the bind.

Parameters

[in] bind The bind

Returns: the network interface

References gprs_ns2_vc_bind::driver, priv_bind::netif, gprs_ns2_vc_bind::priv, and vc_driver_fr.

Referenced by config_write_nsvc(), config_write_vbind(), gprs_ns2_fr_bind_by_netif(), and gprs_ns2_ll_str_buf().

◆ gprs_ns2_fr_bind_role()

enum osmo_fr_role gprs_ns2_fr_bind_role ( struct gprs_ns2_vc_bind * bind )

Return the frame relay role of a bind.

Parameters

[in] bind The bind

Returns: the frame relay role or -EINVAL if bind is not frame relay

References gprs_ns2_vc_bind::driver, priv_bind::link, gprs_ns2_vc_bind::priv, osmo_fr_link::role, and vc_driver_fr.

Referenced by config_write_vbind().

◆ gprs_ns2_fr_connect()

struct gprs_ns2_vc * gprs_ns2_fr_connect	(	struct gprs_ns2_vc_bind *	bind,
		struct gprs_ns2_nse *	nse,
		uint16_t	nsvci,
		uint16_t	dlci
	)

Create, connect and activate a new FR-based NS-VC.

Parameters

[in]	bind	bind in which the new NS-VC is to be created
[in]	nsei	NSEI of the NS Entity in which the NS-VC is to be created
[in]	dlci	Data Link connection identifier

Returns: pointer to newly-allocated, connected and activated NS-VC; NULL on error

References priv_bind::dlci, fr_alloc_vc(), gprs_ns2_fr_nsvc_by_dlci(), gprs_ns2_free_nsvc(), gprs_ns2_is_fr_bind(), gprs_ns2_lltype_str(), GPRS_NS2_VC_MODE_BLOCKRESET, gprs_ns2_nse::ll, priv_bind::netif, ns2_vc_alloc(), gprs_ns2_nse::nsei, gprs_ns2_vc::nsvci, gprs_ns2_vc::nsvci_is_valid, OSMO_ASSERT, osmo_identifier_sanitize_buf(), gprs_ns2_vc::priv, and gprs_ns2_vc_bind::priv.

Referenced by DEFUN(), and gprs_ns2_fr_connect2().

◆ gprs_ns2_fr_connect2()

struct gprs_ns2_vc * gprs_ns2_fr_connect2	(	struct gprs_ns2_vc_bind *	bind,
		uint16_t	nsei,
		uint16_t	nsvci,
		uint16_t	dlci
	)

Create, connect and activate a new FR-based NS-VC.

Parameters

[in]	bind	bind in which the new NS-VC is to be created
[in]	nsei	NSEI of the NS Entity in which the NS-VC is to be created
[in]	dlci	Data Link connection identifier

Returns: pointer to newly-allocated, connected and activated NS-VC; NULL on error

References gprs_ns2_create_nse(), GPRS_NS2_DIALECT_STATIC_RESETBLOCK, gprs_ns2_fr_connect(), gprs_ns2_free_nse(), gprs_ns2_is_fr_bind(), GPRS_NS2_LL_FR, gprs_ns2_nse_by_nsei(), nsei, gprs_ns2_vc_bind::nsi, gprs_ns2_nse::nsvc, and OSMO_ASSERT.

◆ gprs_ns2_fr_nsvc_by_dlci()

struct gprs_ns2_vc * gprs_ns2_fr_nsvc_by_dlci	(	struct gprs_ns2_vc_bind *	bind,
		uint16_t	dlci
	)

Return the nsvc by dlci.

Parameters

[in]	bind
[in]	dlci	Data Link connection identifier

Returns: the nsvc or NULL if not found

References priv_vc::dlci, gprs_ns2_is_fr_bind(), llist_for_each_entry, gprs_ns2_vc_bind::nsvc, OSMO_ASSERT, and gprs_ns2_vc::priv.

Referenced by DEFUN(), and gprs_ns2_fr_connect().

◆ gprs_ns2_fr_nsvc_dlci()

uint16_t gprs_ns2_fr_nsvc_dlci ( const struct gprs_ns2_vc * nsvc )

Return the dlci of the nsvc.

Parameters

[in] nsvc

Returns: the dlci or 0 on error. 0 is not a valid dlci.

References gprs_ns2_vc::bind, priv_vc::dlci, gprs_ns2_vc_bind::driver, gprs_ns2_vc::priv, and vc_driver_fr.

Referenced by config_write_nsvc(), and gprs_ns2_ll_str_buf().

◆ gprs_ns2_is_fr_bind()

int gprs_ns2_is_fr_bind ( struct gprs_ns2_vc_bind * bind )

determine if given bind is for FR-GRE encapsulation.

References gprs_ns2_vc_bind::driver, and vc_driver_fr.

Referenced by fr_alloc_vc(), free_bind(), free_vc(), gprs_ns2_find_vc_by_dlci(), gprs_ns2_fr_bind_by_netif(), gprs_ns2_fr_connect(), gprs_ns2_fr_connect2(), and gprs_ns2_fr_nsvc_by_dlci().

◆ open_socket()

static int open_socket	(	int	ifindex,
		const struct gprs_ns2_vc_bind *	nsbind
	)

static

References fd, LOGBIND, and LOGL_ERROR.

Referenced by gprs_ns2_fr_bind().

◆ set_ifupdown()

static int set_ifupdown	(	const char *	netif,
		bool	up
	)

static

References OSMO_STRLCPY_ARRAY.

Referenced by setup_device().

◆ setup_device()

static int setup_device	(	const char *	netif,
		const struct gprs_ns2_vc_bind *	bind
	)

static

References LOGBIND, LOGL_ERROR, LOGL_INFO, LOGL_NOTICE, OSMO_STRLCPY_ARRAY, set_ifupdown(), and buffer::size.

Referenced by gprs_ns2_fr_bind().

Variable Documentation

◆ vc_driver_fr

struct gprs_ns2_vc_driver vc_driver_fr

Initial value:

= {
        .name = "GB frame relay",
        .free_bind = free_bind,
}

Referenced by gprs_ns2_fr_bind(), gprs_ns2_fr_bind_netif(), gprs_ns2_fr_bind_role(), gprs_ns2_fr_nsvc_dlci(), and gprs_ns2_is_fr_bind().

Data Structures

Macros

Functions

Variables

Detailed Description

Macro Definition Documentation

◆ BIT_DURATION_NS

◆ E1_LINERATE

◆ E1_SLOTS_TOTAL

◆ E1_SLOTS_USED

◆ GRE_PTYPE_FR

◆ GRE_PTYPE_IPv4

◆ GRE_PTYPE_IPv6

◆ GRE_PTYPE_KAR

◆ IPPROTO_GRE

◆ LMI_Q933A_DLCI

◆ SUPERCHANNEL_LINERATE

Function Documentation

◆ backlog_enqueue_or_free()

◆ devname2ifindex()

◆ dump_vty()

◆ enqueue_at_head()

◆ enqueue_at_tail()

◆ fr_alloc_vc()

◆ fr_backlog_timer_cb()

◆ fr_dlci_rx_cb()

◆ fr_dlci_status_cb()

◆ fr_netif_ofd_cb()

◆ fr_netif_write_one()

◆ fr_tx_cb()

◆ fr_vc_sendmsg()

◆ free_bind()

◆ free_vc()

◆ gprs_n2_fr_ifupdown_ind_cb()

◆ gprs_n2_fr_mtu_chg_cb()

◆ gprs_ns2_find_vc_by_dlci()

◆ gprs_ns2_fr_bind()

◆ gprs_ns2_fr_bind_by_netif()

◆ gprs_ns2_fr_bind_netif()

◆ gprs_ns2_fr_bind_role()

◆ gprs_ns2_fr_connect()

◆ gprs_ns2_fr_connect2()

◆ gprs_ns2_fr_nsvc_by_dlci()

◆ gprs_ns2_fr_nsvc_dlci()

◆ gprs_ns2_is_fr_bind()

◆ open_socket()

◆ set_ifupdown()

◆ setup_device()

Variable Documentation

◆ vc_driver_fr