ng_deflate.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/endian.h>
#include <sys/errno.h>
#include <sys/syslog.h>
#include <contrib/zlib/zlib.h>
#include <netgraph/ng_message.h>
#include <netgraph/netgraph.h>
#include <netgraph/ng_parse.h>
#include <netgraph/ng_deflate.h>
#include "opt_netgraph.h"

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Data Structures
struct	ng_deflate_private

Macros
#define	DEFLATE_HDRLEN   2
#define	PROT_COMPD   0x00fd
#define	DEFLATE_BUF_SIZE   4096
#define	ERROUT(x)   do { error = (x); goto done; } while (0)

Typedefs
typedef struct ng_deflate_private *	priv_p

Functions
static	MALLOC_DEFINE (M_NETGRAPH_DEFLATE, "netgraph_deflate", "netgraph deflate node")
static int	ng_deflate_compress (node_p, struct mbuf *, struct mbuf **)
static int	ng_deflate_decompress (node_p, struct mbuf *, struct mbuf **)
static void	ng_deflate_reset_req (node_p)
	NETGRAPH_INIT (deflate, &ng_deflate_typestruct)
	MODULE_DEPEND (ng_deflate, zlib, 1, 1, 1)
static int	ng_deflate_constructor (node_p node)
static int	ng_deflate_newhook (node_p node, hook_p hook, const char *name)
static int	ng_deflate_rcvmsg (node_p node, item_p item, hook_p lasthook)
static int	ng_deflate_rcvdata (hook_p hook, item_p item)
static int	ng_deflate_shutdown (node_p node)
static int	ng_deflate_disconnect (hook_p hook)

Variables
static ng_constructor_t	ng_deflate_constructor
static ng_rcvmsg_t	ng_deflate_rcvmsg
static ng_shutdown_t	ng_deflate_shutdown
static ng_newhook_t	ng_deflate_newhook
static ng_rcvdata_t	ng_deflate_rcvdata
static ng_disconnect_t	ng_deflate_disconnect
static const struct ng_parse_struct_field	ng_deflate_config_type_fields [] = NG_DEFLATE_CONFIG_INFO
static const struct ng_parse_type	ng_deflate_config_type
static const struct ng_parse_struct_field	ng_deflate_stats_type_fields [] = NG_DEFLATE_STATS_INFO
static const struct ng_parse_type	ng_deflate_stat_type
static const struct ng_cmdlist	ng_deflate_cmds []
static struct ng_type	ng_deflate_typestruct

Macro Definition Documentation

DEFLATE_BUF_SIZE

#define DEFLATE_BUF_SIZE   4096

Definition at line 61 of file ng_deflate.c.

DEFLATE_HDRLEN

#define DEFLATE_HDRLEN   2

Definition at line 57 of file ng_deflate.c.

ERROUT

#define ERROUT

(

x

)

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

Definition at line 162 of file ng_deflate.c.

PROT_COMPD

#define PROT_COMPD   0x00fd

Definition at line 59 of file ng_deflate.c.

Typedef Documentation

priv_p

typedef struct ng_deflate_private* priv_p

Definition at line 74 of file ng_deflate.c.

Function Documentation

MALLOC_DEFINE()

static MALLOC_DEFINE ( M_NETGRAPH_DEFLATE  , "netgraph_deflate"  , "netgraph deflate node"    )

static

MODULE_DEPEND()

MODULE_DEPEND	(	ng_deflate	,
		zlib	,
		1	,
		1	,
		1
	)

NETGRAPH_INIT()

NETGRAPH_INIT	(	deflate	,
		&	ng_deflate_typestruct
	)

ng_deflate_compress()

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

static

Definition at line 420 of file ng_deflate.c.

References DEFLATE_BUF_SIZE, DEFLATE_HDRLEN, NG_FREE_M, NG_NODE_PRIVATE, PROT_COMPD, and priv::stats.

Referenced by ng_deflate_rcvdata().

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ng_deflate_constructor()

static int ng_deflate_constructor ( node_p  node )

static

Definition at line 172 of file ng_deflate.c.

References NG_NODE_FORCE_WRITER, and NG_NODE_SET_PRIVATE.

ng_deflate_decompress()

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

static

Definition at line 526 of file ng_deflate.c.

References DEFLATE_BUF_SIZE, NG_FREE_M, NG_NODE_PRIVATE, PROT_COMPD, and priv::stats.

Referenced by ng_deflate_rcvdata().

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ng_deflate_disconnect()

static int ng_deflate_disconnect ( hook_p  hook )

static

Definition at line 392 of file ng_deflate.c.

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

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ng_deflate_newhook()

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

static

Definition at line 192 of file ng_deflate.c.

References name, NG_DEFLATE_HOOK_COMP, NG_DEFLATE_HOOK_DECOMP, NG_NODE_NUMHOOKS, and NG_NODE_PRIVATE.

ng_deflate_rcvdata()

static int ng_deflate_rcvdata ( hook_p  hook, item_p  item  )

static

Definition at line 323 of file ng_deflate.c.

References ng_deflate_compress(), ng_deflate_decompress(), NG_FREE_ITEM, NG_FWD_NEW_DATA, NG_HOOK_NODE, NG_MKMESSAGE, NG_NODE_PRIVATE, NG_SEND_MSG_ID, NGI_GET_M, NGM_DEFLATE_COOKIE, and NGM_DEFLATE_RESETREQ.

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ng_deflate_rcvmsg()

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

static

Definition at line 213 of file ng_deflate.c.

References ng_mesg::ng_msghdr::arglen, ng_mesg::ng_msghdr::cmd, ng_mesg::data, ng_deflate_config::enable, ERROUT, ng_mesg::header, ng_deflate_reset_req(), NG_FREE_MSG, NG_MKRESPONSE, NG_NODE_PRIVATE, NG_RESPOND_MSG, NGI_GET_MSG, NGI_RETADDR, NGM_DEFLATE_CLR_STATS, NGM_DEFLATE_CONFIG, NGM_DEFLATE_COOKIE, NGM_DEFLATE_GET_STATS, NGM_DEFLATE_GETCLR_STATS, NGM_DEFLATE_RESETREQ, priv::stats, ng_mesg::ng_msghdr::typecookie, and ng_deflate_config::windowBits.

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ng_deflate_reset_req()

static void ng_deflate_reset_req ( node_p  node )

static

Definition at line 707 of file ng_deflate.c.

References NG_NODE_PRIVATE.

Referenced by ng_deflate_rcvmsg().

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ng_deflate_shutdown()

static int ng_deflate_shutdown ( node_p  node )

static

Definition at line 370 of file ng_deflate.c.

References NG_NODE_PRIVATE, NG_NODE_SET_PRIVATE, and NG_NODE_UNREF.

Variable Documentation

ng_deflate_cmds

const struct ng_cmdlist ng_deflate_cmds[]

static

Definition at line 106 of file ng_deflate.c.

ng_deflate_config_type

const struct ng_parse_type ng_deflate_config_type

static

Initial value:

= {
        &ng_parse_struct_type,
        ng_deflate_config_type_fields
}

Definition at line 92 of file ng_deflate.c.

ng_deflate_config_type_fields

const struct ng_parse_struct_field ng_deflate_config_type_fields[] = NG_DEFLATE_CONFIG_INFO

static

Definition at line 90 of file ng_deflate.c.

ng_deflate_constructor

ng_constructor_t ng_deflate_constructor

static

Definition at line 77 of file ng_deflate.c.

ng_deflate_disconnect

ng_disconnect_t ng_deflate_disconnect

static

Definition at line 82 of file ng_deflate.c.

ng_deflate_newhook

ng_newhook_t ng_deflate_newhook

static

Definition at line 80 of file ng_deflate.c.

ng_deflate_rcvdata

ng_rcvdata_t ng_deflate_rcvdata

static

Definition at line 81 of file ng_deflate.c.

ng_deflate_rcvmsg

ng_rcvmsg_t ng_deflate_rcvmsg

static

Definition at line 78 of file ng_deflate.c.

ng_deflate_shutdown

ng_shutdown_t ng_deflate_shutdown

static

Definition at line 79 of file ng_deflate.c.

ng_deflate_stat_type

const struct ng_parse_type ng_deflate_stat_type

static

Initial value:

= {
        &ng_parse_struct_type,
        ng_deflate_stats_type_fields
}

Definition at line 100 of file ng_deflate.c.

ng_deflate_stats_type_fields

const struct ng_parse_struct_field ng_deflate_stats_type_fields[] = NG_DEFLATE_STATS_INFO

static

Definition at line 98 of file ng_deflate.c.

ng_deflate_typestruct

struct ng_type ng_deflate_typestruct

static

Initial value:

= {
        .version =      NG_ABI_VERSION,
        .name =         NG_DEFLATE_NODE_TYPE,
        .constructor =  ng_deflate_constructor,
        .rcvmsg =       ng_deflate_rcvmsg,
        .shutdown =     ng_deflate_shutdown,
        .newhook =      ng_deflate_newhook,
        .rcvdata =      ng_deflate_rcvdata,
        .disconnect =   ng_deflate_disconnect,
        .cmdlist =      ng_deflate_cmds,
}

Definition at line 146 of file ng_deflate.c.