ng_pred1.c File Reference

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/mbuf.h>
#include <sys/malloc.h>
#include <sys/errno.h>
#include <sys/syslog.h>
#include <netgraph/ng_message.h>
#include <netgraph/netgraph.h>
#include <netgraph/ng_parse.h>
#include <netgraph/ng_pred1.h>
#include "opt_netgraph.h"

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Data Structures
struct	ng_pred1_private

Macros
#define	PRED1_HDRLEN   2
#define	PRED1_TABLE_SIZE   0x10000
#define	PRED1_BUF_SIZE   4096
#define	PPP_INITFCS   0xffff /* Initial FCS value */
#define	PPP_GOODFCS   0xf0b8 /* Good final FCS value */
#define	HASH(x)   priv->Hash = (priv->Hash << 4) ^ (x)
#define	ERROUT(x)   do { error = (x); goto done; } while (0)

Typedefs
typedef struct ng_pred1_private *	priv_p

Functions
static	MALLOC_DEFINE (M_NETGRAPH_PRED1, "netgraph_pred1", "netgraph pred1 node")
static int	ng_pred1_compress (node_p node, struct mbuf *m, struct mbuf **resultp)
static int	ng_pred1_decompress (node_p node, struct mbuf *m, struct mbuf **resultp)
static void	Pred1Init (node_p node)
static int	Pred1Compress (node_p node, u_char *source, u_char *dest, int len)
static int	Pred1Decompress (node_p node, u_char *source, u_char *dest, int slen, int dlen)
static void	Pred1SyncTable (node_p node, u_char *source, int len)
static uint16_t	Crc16 (uint16_t fcs, u_char *cp, int len)
	NETGRAPH_INIT (pred1, &ng_pred1_typestruct)
static int	ng_pred1_constructor (node_p node)
static int	ng_pred1_newhook (node_p node, hook_p hook, const char *name)
static int	ng_pred1_rcvmsg (node_p node, item_p item, hook_p lasthook)
static int	ng_pred1_rcvdata (hook_p hook, item_p item)
static int	ng_pred1_shutdown (node_p node)
static int	ng_pred1_disconnect (hook_p hook)

Variables
static ng_constructor_t	ng_pred1_constructor
static ng_rcvmsg_t	ng_pred1_rcvmsg
static ng_shutdown_t	ng_pred1_shutdown
static ng_newhook_t	ng_pred1_newhook
static ng_rcvdata_t	ng_pred1_rcvdata
static ng_disconnect_t	ng_pred1_disconnect
static const uint16_t	Crc16Table []
static const struct ng_parse_struct_field	ng_pred1_config_type_fields [] = NG_PRED1_CONFIG_INFO
static const struct ng_parse_type	ng_pred1_config_type
static const struct ng_parse_struct_field	ng_pred1_stats_type_fields [] = NG_PRED1_STATS_INFO
static const struct ng_parse_type	ng_pred1_stat_type
static const struct ng_cmdlist	ng_pred1_cmds []
static struct ng_type	ng_pred1_typestruct

Macro Definition Documentation

ERROUT

#define ERROUT

(

x

)

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

Definition at line 178 of file ng_pred1.c.

HASH

#define HASH

(

x

)

priv->Hash = (priv->Hash << 4) ^ (x)

Definition at line 69 of file ng_pred1.c.

PPP_GOODFCS

#define PPP_GOODFCS   0xf0b8 /* Good final FCS value */

Definition at line 59 of file ng_pred1.c.

PPP_INITFCS

#define PPP_INITFCS   0xffff /* Initial FCS value */

Definition at line 58 of file ng_pred1.c.

PRED1_BUF_SIZE

#define PRED1_BUF_SIZE   4096

Definition at line 57 of file ng_pred1.c.

PRED1_HDRLEN

#define PRED1_HDRLEN   2

Definition at line 54 of file ng_pred1.c.

PRED1_TABLE_SIZE

#define PRED1_TABLE_SIZE   0x10000

Definition at line 56 of file ng_pred1.c.

Typedef Documentation

priv_p

typedef struct ng_pred1_private* priv_p

Definition at line 83 of file ng_pred1.c.

Function Documentation

Crc16()

static uint16_t Crc16 ( uint16_t  fcs, u_char *  cp, int  len  )

static

Definition at line 676 of file ng_pred1.c.

References Crc16Table.

Referenced by ng_pred1_compress(), and ng_pred1_decompress().

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MALLOC_DEFINE()

static MALLOC_DEFINE ( M_NETGRAPH_PRED1  , "netgraph_pred1"  , "netgraph pred1 node"    )

static

NETGRAPH_INIT()

NETGRAPH_INIT	(	pred1	,
		&	ng_pred1_typestruct
	)

ng_pred1_compress()

static int ng_pred1_compress ( node_p  node, struct mbuf *  m, struct mbuf **  resultp  )

static

Definition at line 382 of file ng_pred1.c.

References Crc16(), fcs, NG_FREE_M, NG_NODE_PRIVATE, PPP_INITFCS, PRED1_BUF_SIZE, Pred1Compress(), and priv::stats.

Referenced by ng_pred1_rcvdata().

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ng_pred1_constructor()

static int ng_pred1_constructor ( node_p  node )

static

Definition at line 188 of file ng_pred1.c.

References NG_NODE_FORCE_WRITER, and NG_NODE_SET_PRIVATE.

ng_pred1_decompress()

static int ng_pred1_decompress ( node_p  node, struct mbuf *  m, struct mbuf **  resultp  )

static

Definition at line 465 of file ng_pred1.c.

References Crc16(), fcs, NG_FREE_M, NG_NODE_PRIVATE, PPP_GOODFCS, PPP_INITFCS, PRED1_BUF_SIZE, Pred1Decompress(), Pred1SyncTable(), and priv::stats.

Referenced by ng_pred1_rcvdata().

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ng_pred1_disconnect()

static int ng_pred1_disconnect ( hook_p  hook )

static

Definition at line 361 of file ng_pred1.c.

References NG_HOOK_NODE, NG_NODE_IS_VALID, NG_NODE_NUMHOOKS, ng_rmnode_self(), and Pred1Init().

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ng_pred1_newhook()

static int ng_pred1_newhook ( node_p  node, hook_p  hook, const char *  name  )

static

Definition at line 208 of file ng_pred1.c.

References name, NG_NODE_NUMHOOKS, NG_NODE_PRIVATE, NG_PRED1_HOOK_COMP, and NG_PRED1_HOOK_DECOMP.

ng_pred1_rcvdata()

static int ng_pred1_rcvdata ( hook_p  hook, item_p  item  )

static

Definition at line 299 of file ng_pred1.c.

References NG_FREE_ITEM, NG_FWD_NEW_DATA, NG_HOOK_NODE, NG_MKMESSAGE, NG_NODE_PRIVATE, ng_pred1_compress(), ng_pred1_decompress(), NG_SEND_MSG_ID, NGI_GET_M, NGM_PRED1_COOKIE, and NGM_PRED1_RESETREQ.

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ng_pred1_rcvmsg()

static int ng_pred1_rcvmsg ( node_p  node, item_p  item, hook_p  lasthook  )

static

Definition at line 229 of file ng_pred1.c.

References ng_mesg::ng_msghdr::arglen, ng_mesg::ng_msghdr::cmd, ng_mesg::data, ERROUT, ng_mesg::header, NG_FREE_MSG, NG_MKRESPONSE, NG_NODE_PRIVATE, NG_RESPOND_MSG, NGI_GET_MSG, NGI_RETADDR, NGM_PRED1_CLR_STATS, NGM_PRED1_CONFIG, NGM_PRED1_COOKIE, NGM_PRED1_GET_STATS, NGM_PRED1_GETCLR_STATS, NGM_PRED1_RESETREQ, Pred1Init(), priv::stats, and ng_mesg::ng_msghdr::typecookie.

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ng_pred1_shutdown()

static int ng_pred1_shutdown ( node_p  node )

static

Definition at line 347 of file ng_pred1.c.

References NG_NODE_PRIVATE, NG_NODE_SET_PRIVATE, and NG_NODE_UNREF.

Pred1Compress()

static int Pred1Compress ( node_p  node, u_char *  source, u_char *  dest, int  len  )

static

Definition at line 584 of file ng_pred1.c.

References flags, HASH, and NG_NODE_PRIVATE.

Referenced by ng_pred1_compress().

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Pred1Decompress()

static int Pred1Decompress ( node_p  node, u_char *  source, u_char *  dest, int  slen, int  dlen  )

static

Definition at line 619 of file ng_pred1.c.

References flags, HASH, and NG_NODE_PRIVATE.

Referenced by ng_pred1_decompress().

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Pred1Init()

static void Pred1Init ( node_p  node )

static

Definition at line 571 of file ng_pred1.c.

References NG_NODE_PRIVATE, and PRED1_TABLE_SIZE.

Referenced by ng_pred1_disconnect(), and ng_pred1_rcvmsg().

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Pred1SyncTable()

static void Pred1SyncTable ( node_p  node, u_char *  source, int  len  )

static

Definition at line 658 of file ng_pred1.c.

References HASH, and NG_NODE_PRIVATE.

Referenced by ng_pred1_decompress().

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Variable Documentation

Crc16Table

static const uint16_t Crc16Table

static

Definition at line 106 of file ng_pred1.c.

Referenced by Crc16().

ng_pred1_cmds

const struct ng_cmdlist ng_pred1_cmds[]

static

Definition at line 125 of file ng_pred1.c.

ng_pred1_config_type

const struct ng_parse_type ng_pred1_config_type

static

Initial value:

= {
        &ng_parse_struct_type,
        ng_pred1_config_type_fields
}

Definition at line 111 of file ng_pred1.c.

ng_pred1_config_type_fields

const struct ng_parse_struct_field ng_pred1_config_type_fields[] = NG_PRED1_CONFIG_INFO

static

Definition at line 109 of file ng_pred1.c.

ng_pred1_constructor

ng_constructor_t ng_pred1_constructor

static

Definition at line 86 of file ng_pred1.c.

ng_pred1_disconnect

ng_disconnect_t ng_pred1_disconnect

static

Definition at line 91 of file ng_pred1.c.

ng_pred1_newhook

ng_newhook_t ng_pred1_newhook

static

Definition at line 89 of file ng_pred1.c.

ng_pred1_rcvdata

ng_rcvdata_t ng_pred1_rcvdata

static

Definition at line 90 of file ng_pred1.c.

ng_pred1_rcvmsg

ng_rcvmsg_t ng_pred1_rcvmsg

static

Definition at line 87 of file ng_pred1.c.

ng_pred1_shutdown

ng_shutdown_t ng_pred1_shutdown

static

Definition at line 88 of file ng_pred1.c.

ng_pred1_stat_type

const struct ng_parse_type ng_pred1_stat_type

static

Initial value:

= {
        &ng_parse_struct_type,
        ng_pred1_stats_type_fields
}

Definition at line 119 of file ng_pred1.c.

ng_pred1_stats_type_fields

const struct ng_parse_struct_field ng_pred1_stats_type_fields[] = NG_PRED1_STATS_INFO

static

Definition at line 117 of file ng_pred1.c.

ng_pred1_typestruct

struct ng_type ng_pred1_typestruct

static

Initial value:

= {
        .version =      NG_ABI_VERSION,
        .name =         NG_PRED1_NODE_TYPE,
        .constructor =  ng_pred1_constructor,
        .rcvmsg =       ng_pred1_rcvmsg,
        .shutdown =     ng_pred1_shutdown,
        .newhook =      ng_pred1_newhook,
        .rcvdata =      ng_pred1_rcvdata,
        .disconnect =   ng_pred1_disconnect,
        .cmdlist =      ng_pred1_cmds,
}

Definition at line 165 of file ng_pred1.c.