ng_lmi.c File Reference

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/errno.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/syslog.h>
#include <netgraph/ng_message.h>
#include <netgraph/netgraph.h>
#include <netgraph/ng_lmi.h>

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Go to the source code of this file.

Data Structures
struct	nglmi_softc

Macros
#define	NAME_ANNEXA   NG_LMI_HOOK_ANNEXA
#define	NAME_ANNEXD   NG_LMI_HOOK_ANNEXD
#define	NAME_GROUP4   NG_LMI_HOOK_GROUPOF4
#define	NAME_NONE   "None"
#define	MAX_DLCIS   128
#define	MAXDLCI   1023
#define	DLCI_NULL   0
#define	DLCI_UP   1
#define	DLCI_DOWN   2
#define	LMI_MIN_LENGTH   8 /* XXX verify */
#define	SCF_CONNECTED   0x01 /* connected to something */
#define	SCF_AUTO   0x02 /* we are auto-detecting */
#define	SCF_FIXED   0x04 /* we are fixed from the start */
#define	SCF_LMITYPE   0x18 /* mask for determining Annex mode */
#define	SCF_NOLMI   0x00 /* no LMI type selected yet */
#define	SCF_ANNEX_A   0x08 /* running annex A mode */
#define	SCF_ANNEX_D   0x10 /* running annex D mode */
#define	SCF_GROUP4   0x18 /* running group of 4 */
#define	SETLMITYPE(sc, annex)
#define	NOPROTO(sc)   (((sc)->flags & SCF_LMITYPE) == SCF_NOLMI)
#define	ANNEXA(sc)   (((sc)->flags & SCF_LMITYPE) == SCF_ANNEX_A)
#define	ANNEXD(sc)   (((sc)->flags & SCF_LMITYPE) == SCF_ANNEX_D)
#define	GROUP4(sc)   (((sc)->flags & SCF_LMITYPE) == SCF_GROUP4)
#define	LMIPOLLSIZE   3
#define	LMI_PATIENCE   8 /* declare all DLCI DOWN after N LMI failures */
#define	STEPBY(stepsize)

Typedefs
typedef struct nglmi_softc *	sc_p

Functions
static int	nglmi_checkdata (hook_p hook, struct mbuf *m)
	NETGRAPH_INIT (lmi, &typestruct)
static void	LMI_ticker (node_p node, hook_p hook, void *arg1, int arg2)
static void	nglmi_startup_fixed (sc_p sc, hook_p hook)
static void	nglmi_startup_auto (sc_p sc)
static void	nglmi_startup (sc_p sc)
static void	nglmi_inquire (sc_p sc, int full)
static void	ngauto_state_machine (sc_p sc)
static int	nglmi_constructor (node_p node)
static int	nglmi_newhook (node_p node, hook_p hook, const char *name)
static int	nglmi_rcvmsg (node_p node, item_p item, hook_p lasthook)
static int	nglmi_rcvdata (hook_p hook, item_p item)
static int	nglmi_shutdown (node_p node)
static int	nglmi_disconnect (hook_p hook)

Variables
static ng_constructor_t	nglmi_constructor
static ng_rcvmsg_t	nglmi_rcvmsg
static ng_shutdown_t	nglmi_shutdown
static ng_newhook_t	nglmi_newhook
static ng_rcvdata_t	nglmi_rcvdata
static ng_disconnect_t	nglmi_disconnect
static struct ng_type	typestruct

Macro Definition Documentation

ANNEXA

#define ANNEXA

(

sc

)

(((sc)->flags & SCF_LMITYPE) == SCF_ANNEX_A)

Definition at line 173 of file ng_lmi.c.

ANNEXD

#define ANNEXD

(

sc

)

(((sc)->flags & SCF_LMITYPE) == SCF_ANNEX_D)

Definition at line 174 of file ng_lmi.c.

DLCI_DOWN

#define DLCI_DOWN   2

Definition at line 83 of file ng_lmi.c.

DLCI_NULL

#define DLCI_NULL   0

Definition at line 81 of file ng_lmi.c.

DLCI_UP

#define DLCI_UP   1

Definition at line 82 of file ng_lmi.c.

GROUP4

#define GROUP4

(

sc

)

(((sc)->flags & SCF_LMITYPE) == SCF_GROUP4)

Definition at line 175 of file ng_lmi.c.

LMI_MIN_LENGTH

#define LMI_MIN_LENGTH   8 /* XXX verify */

Definition at line 88 of file ng_lmi.c.

LMI_PATIENCE

#define LMI_PATIENCE   8 /* declare all DLCI DOWN after N LMI failures */

Definition at line 178 of file ng_lmi.c.

LMIPOLLSIZE

#define LMIPOLLSIZE   3

Definition at line 177 of file ng_lmi.c.

MAX_DLCIS

#define MAX_DLCIS   128

Definition at line 75 of file ng_lmi.c.

MAXDLCI

#define MAXDLCI   1023

Definition at line 76 of file ng_lmi.c.

NAME_ANNEXA

#define NAME_ANNEXA   NG_LMI_HOOK_ANNEXA

Definition at line 70 of file ng_lmi.c.

NAME_ANNEXD

#define NAME_ANNEXD   NG_LMI_HOOK_ANNEXD

Definition at line 71 of file ng_lmi.c.

NAME_GROUP4

#define NAME_GROUP4   NG_LMI_HOOK_GROUPOF4

Definition at line 72 of file ng_lmi.c.

NAME_NONE

#define NAME_NONE   "None"

Definition at line 73 of file ng_lmi.c.

NOPROTO

#define NOPROTO

(

sc

)

(((sc)->flags & SCF_LMITYPE) == SCF_NOLMI)

Definition at line 172 of file ng_lmi.c.

SCF_ANNEX_A

#define SCF_ANNEX_A   0x08 /* running annex A mode */

Definition at line 162 of file ng_lmi.c.

SCF_ANNEX_D

#define SCF_ANNEX_D   0x10 /* running annex D mode */

Definition at line 163 of file ng_lmi.c.

SCF_AUTO

#define SCF_AUTO   0x02 /* we are auto-detecting */

Definition at line 157 of file ng_lmi.c.

SCF_CONNECTED

#define SCF_CONNECTED   0x01 /* connected to something */

Definition at line 156 of file ng_lmi.c.

SCF_FIXED

#define SCF_FIXED   0x04 /* we are fixed from the start */

Definition at line 158 of file ng_lmi.c.

SCF_GROUP4

#define SCF_GROUP4   0x18 /* running group of 4 */

Definition at line 164 of file ng_lmi.c.

SCF_LMITYPE

#define SCF_LMITYPE   0x18 /* mask for determining Annex mode */

Definition at line 160 of file ng_lmi.c.

SCF_NOLMI

#define SCF_NOLMI   0x00 /* no LMI type selected yet */

Definition at line 161 of file ng_lmi.c.

SETLMITYPE

#define SETLMITYPE	(		sc,
			annex
	)

Value:

do {                                                                    \
        (sc)->flags &= ~SCF_LMITYPE;                                    \
        (sc)->flags |= (annex);                                         \
} while (0)

Definition at line 166 of file ng_lmi.c.

STEPBY

#define STEPBY

(

stepsize

)

Value:

        do {                                    \
                packetlen -= (stepsize);        \
                data += (stepsize);             \
        } while (0)

Definition at line 542 of file ng_lmi.c.

Typedef Documentation

sc_p

typedef struct nglmi_softc* sc_p

Definition at line 140 of file ng_lmi.c.

Function Documentation

LMI_ticker()

static void LMI_ticker ( node_p  node, hook_p  hook, void *  arg1, int  arg2  )

static

Definition at line 262 of file ng_lmi.c.

References LMI_ticker(), ng_callout(), NG_LMI_POLL_RATE, NG_NODE_PRIVATE, ngauto_state_machine(), nglmi_inquire(), nglmi_softc::node, and SCF_AUTO.

Referenced by LMI_ticker(), and nglmi_startup().

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NETGRAPH_INIT()

NETGRAPH_INIT	(	lmi	,
		&	typestruct
	)

ngauto_state_machine()

static void ngauto_state_machine ( sc_p  sc )

static

Definition at line 393 of file ng_lmi.c.

References LMIPOLLSIZE, nglmi_inquire(), SCF_ANNEX_A, SCF_ANNEX_D, SCF_GROUP4, and SETLMITYPE.

Referenced by LMI_ticker().

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nglmi_checkdata()

static int nglmi_checkdata ( hook_p  hook, struct mbuf *  m  )

static

Definition at line 735 of file ng_lmi.c.

References ANNEXD, data, dlci, GROUP4, NG_FREE_M, NG_HOOK_NODE, NG_NODE_PRIVATE, SCF_ANNEX_A, SCF_ANNEX_D, SCF_AUTO, SCF_GROUP4, SCF_NOLMI, SETLMITYPE, STEPBY, and type.

Referenced by nglmi_rcvdata().

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nglmi_constructor()

static int nglmi_constructor ( node_p  node )

static

Definition at line 184 of file ng_lmi.c.

References NAME_NONE, ng_callout_init, NG_LMI_KEEPALIVE_RATE, NG_LMI_SEQ_PER_FULL, NG_NODE_SET_PRIVATE, ng_async_private::node, and nglmi_softc::node.

nglmi_disconnect()

static int nglmi_disconnect ( hook_p  hook )

static

Definition at line 1063 of file ng_lmi.c.

References NG_HOOK_NODE, NG_HOOK_PRIVATE, NG_NODE_IS_VALID, NG_NODE_PRIVATE, ng_rmnode_self(), ng_uncallout(), ng_async_private::node, and SCF_CONNECTED.

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nglmi_inquire()

static void nglmi_inquire ( sc_p  sc, int  full  )

static

Definition at line 311 of file ng_lmi.c.

References ANNEXA, ANNEXD, count, ng_tag_prio::discardability, DLCI_DOWN, DLCI_UP, GROUP4, LMI_PATIENCE, MAXDLCI, NG_PRIO_LINKSTATE, NG_SEND_DATA_ONLY, NG_TAG_PRIO, NGM_GENERIC_COOKIE, ng_tag_prio::priority, and ng_tag_prio::tag.

Referenced by LMI_ticker(), and ngauto_state_machine().

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nglmi_newhook()

static int nglmi_newhook ( node_p  node, hook_p  hook, const char *  name  )

static

Definition at line 205 of file ng_lmi.c.

References name, NAME_ANNEXA, NAME_ANNEXD, NAME_GROUP4, NAME_NONE, NG_HOOK_SET_PRIVATE, NG_LMI_HOOK_ANNEXA, NG_LMI_HOOK_ANNEXD, NG_LMI_HOOK_AUTO0, NG_LMI_HOOK_AUTO1023, NG_LMI_HOOK_DEBUG, NG_LMI_HOOK_GROUPOF4, NG_NODE_PRIVATE, nglmi_startup_auto(), nglmi_startup_fixed(), nglmi_softc::node, SCF_ANNEX_A, SCF_ANNEX_D, SCF_CONNECTED, SCF_GROUP4, and SETLMITYPE.

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nglmi_rcvdata()

static int nglmi_rcvdata ( hook_p  hook, item_p  item  )

static

Definition at line 553 of file ng_lmi.c.

References ANNEXA, ANNEXD, count, data, dlci, DLCI_DOWN, DLCI_UP, GROUP4, nglmistat::hook, MAXDLCI, NAME_ANNEXA, NAME_ANNEXD, NAME_GROUP4, NG_FREE_ITEM, NG_FREE_M, NG_HOOK_NODE, NG_HOOK_PRIVATE, NG_NODE_PRIVATE, NGI_GET_M, nglmi_checkdata(), SCF_AUTO, and STEPBY.

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nglmi_rcvmsg()

static int nglmi_rcvmsg ( node_p  node, item_p  item, hook_p  lasthook  )

static

Definition at line 441 of file ng_lmi.c.

References ng_mesg::ng_msghdr::arglen, nglmistat::autod, ng_mesg::ng_msghdr::cmd, count, ng_mesg::data, DLCI_DOWN, DLCI_UP, nglmistat::fixed, ng_mesg::header, nglmistat::hook, MAXDLCI, NG_FREE_MSG, NG_MKRESPONSE, NG_NODE_PRIVATE, NG_RESPOND_MSG, NG_TEXTRESPONSE, NGI_GET_MSG, NGM_GENERIC_COOKIE, NGM_LMI_COOKIE, NGM_LMI_GET_STATUS, NGM_TEXT_STATUS, nglmistat::proto, SCF_AUTO, SCF_FIXED, nglmistat::seen, ng_mesg::ng_msghdr::typecookie, and nglmistat::up.

nglmi_shutdown()

static int nglmi_shutdown ( node_p  node )

static

Definition at line 1048 of file ng_lmi.c.

References NG_NODE_PRIVATE, NG_NODE_SET_PRIVATE, NG_NODE_UNREF, and ng_async_private::node.

nglmi_startup()

static void nglmi_startup ( sc_p  sc )

static

Definition at line 300 of file ng_lmi.c.

References LMI_ticker(), ng_callout(), and ng_async_private::node.

Referenced by nglmi_startup_auto(), and nglmi_startup_fixed().

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nglmi_startup_auto()

static void nglmi_startup_auto ( sc_p  sc )

static

Definition at line 291 of file ng_lmi.c.

References nglmi_startup(), SCF_AUTO, and SCF_CONNECTED.

Referenced by nglmi_newhook().

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nglmi_startup_fixed()

static void nglmi_startup_fixed ( sc_p  sc, hook_p  hook  )

static

Definition at line 283 of file ng_lmi.c.

References nglmi_startup(), SCF_CONNECTED, and SCF_FIXED.

Referenced by nglmi_newhook().

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Variable Documentation

nglmi_constructor

ng_constructor_t nglmi_constructor

static

Definition at line 93 of file ng_lmi.c.

nglmi_disconnect

ng_disconnect_t nglmi_disconnect

static

Definition at line 98 of file ng_lmi.c.

nglmi_newhook

ng_newhook_t nglmi_newhook

static

Definition at line 96 of file ng_lmi.c.

nglmi_rcvdata

ng_rcvdata_t nglmi_rcvdata

static

Definition at line 97 of file ng_lmi.c.

nglmi_rcvmsg

ng_rcvmsg_t nglmi_rcvmsg

static

Definition at line 94 of file ng_lmi.c.

nglmi_shutdown

ng_shutdown_t nglmi_shutdown

static

Definition at line 95 of file ng_lmi.c.

typestruct

struct ng_type typestruct

static

Initial value:

= {
        .version =      NG_ABI_VERSION,
        .name =         NG_LMI_NODE_TYPE,
        .constructor =  nglmi_constructor,
        .rcvmsg =       nglmi_rcvmsg,
        .shutdown =     nglmi_shutdown,
        .newhook =      nglmi_newhook,
        .rcvdata =      nglmi_rcvdata,
        .disconnect =   nglmi_disconnect,
}

Definition at line 101 of file ng_lmi.c.