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

Include dependency graph for ng_frame_relay.c:

Data Structures
struct	ctxinfo

struct	frmrel_softc

struct	segment

Macros
#define	CHAN_VALID 0x01 /* assigned to a channel */

#define	CHAN_ACTIVE 0x02 /* bottom level active */

#define	MAX_CT 16 /* # of dlci's active at a time (POWER OF 2!) */

#define	CTX_VALID 0x8000 /* this bit means it's a valid CTX */

#define	CTX_VALUE (MAX_CT - 1) /* mask for context part */

#define	BYTEX_EA 0x01 /* End Address. Always 0 on byte1 */

#define	BYTE1_C_R 0x02

#define	BYTE2_FECN 0x08 /* forwards congestion notification */

#define	BYTE2_BECN 0x04 /* Backward congestion notification */

#define	BYTE2_DE 0x02 /* Discard elligability */

#define	LASTBYTE_D_C 0x02 /* last byte is dl_core or dlci info */

#define	SHIFTIN(segment, byte, dlci)

#define	SHIFTOUT(segment, byte, dlci)

#define	ERROUT(x) do { error = (x); goto done; } while (0)

Typedefs
typedef struct frmrel_softc *	sc_p

Functions
static int	ngfrm_decode (node_p node, item_p item)

static int	ngfrm_addrlen (char *hdr)

static int	ngfrm_allocate_CTX (sc_p sc, int dlci)

	NETGRAPH_INIT (framerelay, &typestruct)

static int	ngfrm_constructor (node_p node)

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

static int	ngfrm_rcvdata (hook_p hook, item_p item)

static int	ngfrm_shutdown (node_p node)

static int	ngfrm_disconnect (hook_p hook)

Variables
static const struct segment	makeup []

static ng_constructor_t	ngfrm_constructor

static ng_shutdown_t	ngfrm_shutdown

static ng_newhook_t	ngfrm_newhook

static ng_rcvdata_t	ngfrm_rcvdata

static ng_disconnect_t	ngfrm_disconnect

static struct ng_type	typestruct

Macro Definition Documentation

◆ BYTE1_C_R

#define BYTE1_C_R 0x02

Definition at line 96 of file ng_frame_relay.c.

◆ BYTE2_BECN

#define BYTE2_BECN 0x04 /* Backward congestion notification */

Definition at line 98 of file ng_frame_relay.c.

◆ BYTE2_DE

#define BYTE2_DE 0x02 /* Discard elligability */

Definition at line 99 of file ng_frame_relay.c.

◆ BYTE2_FECN

#define BYTE2_FECN 0x08 /* forwards congestion notification */

Definition at line 97 of file ng_frame_relay.c.

◆ BYTEX_EA

#define BYTEX_EA 0x01 /* End Address. Always 0 on byte1 */

Definition at line 95 of file ng_frame_relay.c.

◆ CHAN_ACTIVE

#define CHAN_ACTIVE 0x02 /* bottom level active */

Definition at line 72 of file ng_frame_relay.c.

◆ CHAN_VALID

#define CHAN_VALID 0x01 /* assigned to a channel */

Definition at line 71 of file ng_frame_relay.c.

◆ CTX_VALID

#define CTX_VALID 0x8000 /* this bit means it's a valid CTX */

Definition at line 88 of file ng_frame_relay.c.

◆ CTX_VALUE

#define CTX_VALUE (MAX_CT - 1) /* mask for context part */

Definition at line 89 of file ng_frame_relay.c.

◆ ERROUT

#define ERROUT ( x ) do { error = (x); goto done; } while (0)

Definition at line 151 of file ng_frame_relay.c.

◆ LASTBYTE_D_C

#define LASTBYTE_D_C 0x02 /* last byte is dl_core or dlci info */

Definition at line 100 of file ng_frame_relay.c.

◆ MAX_CT

#define MAX_CT 16 /* # of dlci's active at a time (POWER OF 2!) */

Definition at line 77 of file ng_frame_relay.c.

◆ SHIFTIN

#define SHIFTIN	(	segment,
		byte,
		dlci
	)

Value:

        {                                                                    \
                (dlci) <<= (segment)->width;                                 \
                (dlci) |=                                                    \
                        (((byte) & (segment)->mask) >> (segment)->shift);    \
        }

Definition at line 114 of file ng_frame_relay.c.

◆ SHIFTOUT

#define SHIFTOUT	(	segment,
		byte,
		dlci
	)

Value:

        {                                                                    \
                (byte) |= (((dlci) << (segment)->shift) & (segment)->mask);  \
                (dlci) >>= (segment)->width;                                 \
        }

Definition at line 121 of file ng_frame_relay.c.

Typedef Documentation

◆ sc_p

typedef struct frmrel_softc* sc_p

Definition at line 93 of file ng_frame_relay.c.

Function Documentation

◆ NETGRAPH_INIT()

NETGRAPH_INIT	(	framerelay	,
		&	typestruct
	)

◆ ngfrm_addrlen()

int ngfrm_addrlen ( char * hdr )

static

Definition at line 311 of file ng_frame_relay.c.

References BYTEX_EA.

Referenced by ngfrm_decode().

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◆ ngfrm_allocate_CTX()

static int ngfrm_allocate_CTX	(	sc_p	sc,
		int	dlci
	)

static

Definition at line 158 of file ng_frame_relay.c.

References CHAN_VALID, CTX_VALID, CTX_VALUE, dlci, and MAX_CT.

Referenced by ngfrm_newhook().

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◆ ngfrm_constructor()

static int ngfrm_constructor ( node_p node )

static

Definition at line 213 of file ng_frame_relay.c.

References NG_NODE_SET_PRIVATE, and ng_async_private::node.

◆ ngfrm_decode()

static int ngfrm_decode	(	node_p	node,
		item_p	item
	)

static

Definition at line 409 of file ng_frame_relay.c.

References CTX_VALID, CTX_VALUE, data, dlci, ERROUT, makeup, NG_FREE_ITEM, NG_FREE_M, NG_FWD_NEW_DATA, NG_NODE_PRIVATE, ngfrm_addrlen(), NGI_GET_M, and SHIFTIN.

Referenced by ngfrm_rcvdata().

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◆ ngfrm_disconnect()

static int ngfrm_disconnect ( hook_p hook )

static

Definition at line 484 of file ng_frame_relay.c.

References dlci, ctxinfo::dlci, ctxinfo::flags, ctxinfo::hook, NG_HOOK_NODE, NG_HOOK_PRIVATE, NG_NODE_IS_VALID, NG_NODE_NUMHOOKS, NG_NODE_PRIVATE, and ng_rmnode_self().

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◆ ngfrm_newhook()

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

static

Definition at line 234 of file ng_frame_relay.c.

References CHAN_ACTIVE, dlci, ctxinfo::hook, name, NG_FRAMERELAY_HOOK_DEBUG, NG_FRAMERELAY_HOOK_DLCI, NG_FRAMERELAY_HOOK_DOWNSTREAM, NG_HOOK_SET_PRIVATE, NG_NODE_PRIVATE, and ngfrm_allocate_CTX().

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◆ ngfrm_rcvdata()

static int ngfrm_rcvdata	(	hook_p	hook,
		item_p	item
	)

static

Definition at line 328 of file ng_frame_relay.c.

References BYTEX_EA, CHAN_ACTIVE, data, dlci, ctxinfo::dlci, ERROUT, ctxinfo::flags, ctxinfo::hook, makeup, NG_FREE_ITEM, NG_FREE_M, NG_FWD_NEW_DATA, NG_HOOK_NODE, NG_HOOK_PRIVATE, NG_NODE_PRIVATE, ngfrm_decode(), NGI_GET_M, and SHIFTOUT.

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◆ ngfrm_shutdown()

static int ngfrm_shutdown ( node_p node )

static

Definition at line 467 of file ng_frame_relay.c.

References NG_NODE_PRIVATE, NG_NODE_SET_PRIVATE, and NG_NODE_UNREF.

Variable Documentation

◆ makeup

const struct segment makeup[]

static

Initial value:

= {
        { 0xfc, 2, 6 },
        { 0xf0, 4, 4 },
        { 0xfe, 1, 7 },
        { 0xfc, 2, 6 }
}

Referenced by ngfrm_decode(), and ngfrm_rcvdata().

◆ ngfrm_constructor

ng_constructor_t ngfrm_constructor

static

Definition at line 128 of file ng_frame_relay.c.

◆ ngfrm_disconnect

ng_disconnect_t ngfrm_disconnect

static

Definition at line 132 of file ng_frame_relay.c.

◆ ngfrm_newhook

ng_newhook_t ngfrm_newhook

static

Definition at line 130 of file ng_frame_relay.c.

◆ ngfrm_rcvdata

ng_rcvdata_t ngfrm_rcvdata

static

Definition at line 131 of file ng_frame_relay.c.

◆ ngfrm_shutdown

ng_shutdown_t ngfrm_shutdown

static

Definition at line 129 of file ng_frame_relay.c.

◆ typestruct

struct ng_type typestruct

static

Initial value:

= {
        .version =      NG_ABI_VERSION,
        .name =         NG_FRAMERELAY_NODE_TYPE,
        .constructor =  ngfrm_constructor,
        .shutdown =     ngfrm_shutdown,
        .newhook =      ngfrm_newhook,
        .rcvdata =      ngfrm_rcvdata,
        .disconnect =   ngfrm_disconnect,
}

Definition at line 140 of file ng_frame_relay.c.

Data Structures

Macros

Typedefs

Functions

Variables

Macro Definition Documentation

◆ BYTE1_C_R

◆ BYTE2_BECN

◆ BYTE2_DE

◆ BYTE2_FECN

◆ BYTEX_EA

◆ CHAN_ACTIVE

◆ CHAN_VALID

◆ CTX_VALID

◆ CTX_VALUE

◆ ERROUT

◆ LASTBYTE_D_C

◆ MAX_CT

◆ SHIFTIN

◆ SHIFTOUT

Typedef Documentation

◆ sc_p

Function Documentation

◆ NETGRAPH_INIT()

◆ ngfrm_addrlen()

◆ ngfrm_allocate_CTX()

◆ ngfrm_constructor()

◆ ngfrm_decode()

◆ ngfrm_disconnect()

◆ ngfrm_newhook()

◆ ngfrm_rcvdata()

◆ ngfrm_shutdown()

Variable Documentation

◆ makeup

◆ ngfrm_constructor

◆ ngfrm_disconnect

◆ ngfrm_newhook

◆ ngfrm_rcvdata

◆ ngfrm_shutdown

◆ typestruct