ng_checksum.c File Reference

#include <sys/cdefs.h>
#include "opt_inet.h"
#include "opt_inet6.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/endian.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <net/bpf.h>
#include <net/ethernet.h>
#include <net/if.h>
#include <net/if_vlan_var.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <netinet/ip6.h>
#include <netinet/tcp.h>
#include <netinet/udp.h>
#include <machine/in_cksum.h>
#include <netgraph/ng_message.h>
#include <netgraph/ng_parse.h>
#include <netgraph/netgraph.h>
#include <netgraph/ng_checksum.h>

Include dependency graph for ng_checksum.c:

Go to the source code of this file.

Data Structures
struct	ng_checksum_priv

Macros
#define	ERROUT(x)   { error = (x); goto done; }
#define	PULLUP_CHECK(mbuf, length)
#define	PULLUP_CHECK(mbuf, length)

Typedefs
typedef struct ng_checksum_priv *	priv_p

Functions
	__FBSDID ("$FreeBSD$")
	NETGRAPH_INIT (checksum, &typestruct)
static int	ng_checksum_constructor (node_p node)
static int	ng_checksum_newhook (node_p node, hook_p hook, const char *name)
static int	ng_checksum_rcvmsg (node_p node, item_p item, hook_p lasthook)
static int	ng_checksum_rcvdata (hook_p hook, item_p item)
static int	ng_checksum_shutdown (node_p node)
static int	ng_checksum_disconnect (hook_p hook)

Variables
static ng_constructor_t	ng_checksum_constructor
static ng_rcvmsg_t	ng_checksum_rcvmsg
static ng_shutdown_t	ng_checksum_shutdown
static ng_newhook_t	ng_checksum_newhook
static ng_rcvdata_t	ng_checksum_rcvdata
static ng_disconnect_t	ng_checksum_disconnect
static const struct ng_parse_struct_field	ng_checksum_config_type_fields [] = NG_CHECKSUM_CONFIG_TYPE
static const struct ng_parse_type	ng_checksum_config_type
static const struct ng_parse_struct_field	ng_checksum_stats_fields [] = NG_CHECKSUM_STATS_TYPE
static const struct ng_parse_type	ng_checksum_stats_type
static const struct ng_cmdlist	ng_checksum_cmdlist []
static struct ng_type	typestruct

Macro Definition Documentation

ERROUT

#define ERROUT

(

x

)

{ error = (x); goto done; }

Definition at line 78 of file ng_checksum.c.

PULLUP_CHECK [1/2]

#define PULLUP_CHECK	(		mbuf,
			length
	)

Value:

        do {                                    \
        pullup_len += length;                                           \
        if (((mbuf)->m_pkthdr.len < pullup_len) ||                      \
            (pullup_len > MHLEN)) {                                     \
                return (EINVAL);                                        \
        }                                                               \
        if ((mbuf)->m_len < pullup_len &&                               \
            (((mbuf) = m_pullup((mbuf), pullup_len)) == NULL)) {        \
                return (ENOBUFS);                                       \
        }                                                               \
} while (0)

Definition at line 293 of file ng_checksum.c.

PULLUP_CHECK [2/2]

#define PULLUP_CHECK	(		mbuf,
			length
	)

Value:

        do {                                    \
        pullup_len += length;                                           \
        if (((mbuf)->m_pkthdr.len < pullup_len) ||                      \
            (pullup_len > MHLEN)) {                                     \
                error = EINVAL;                                         \
                goto bypass;                                            \
        }                                                               \
        if ((mbuf)->m_len < pullup_len &&                               \
            (((mbuf) = m_pullup((mbuf), pullup_len)) == NULL)) {        \
                error = ENOBUFS;                                        \
                goto drop;                                              \
        }                                                               \
} while (0)

Definition at line 293 of file ng_checksum.c.

Typedef Documentation

priv_p

typedef struct ng_checksum_priv* priv_p

Definition at line 69 of file ng_checksum.c.

Function Documentation

__FBSDID()

__FBSDID

(

"$FreeBSD$"

)

NETGRAPH_INIT()

NETGRAPH_INIT	(	checksum	,
		&	typestruct
	)

ng_checksum_constructor()

static int ng_checksum_constructor ( node_p  node )

static

Definition at line 162 of file ng_checksum.c.

References NG_NODE_SET_PRIVATE.

ng_checksum_disconnect()

static int ng_checksum_disconnect ( hook_p  hook )

static

Definition at line 711 of file ng_checksum.c.

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

Here is the call graph for this function:

ng_checksum_newhook()

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

static

Definition at line 175 of file ng_checksum.c.

References name, NG_CHECKSUM_HOOK_IN, NG_CHECKSUM_HOOK_OUT, and NG_NODE_PRIVATE.

ng_checksum_rcvdata()

static int ng_checksum_rcvdata ( hook_p  hook, item_p  item  )

static

Definition at line 541 of file ng_checksum.c.

References ERROUT, ng_checksum_vlan_header::etype, NG_CHECKSUM_CSUM_IPV4, NG_CHECKSUM_CSUM_IPV6, NG_FREE_ITEM, NG_FREE_M, NG_FWD_NEW_DATA, NG_HOOK_NODE, NG_NODE_PRIVATE, NGI_GET_M, PULLUP_CHECK, and priv::stats.

ng_checksum_rcvmsg()

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

static

Definition at line 190 of file ng_checksum.c.

References ng_mesg::ng_msghdr::arglen, ng_mesg::ng_msghdr::cmd, ng_checksum_config::csum_flags, ng_checksum_config::csum_offload, ng_mesg::data, ERROUT, ng_mesg::header, NG_CHECKSUM_CSUM_IPV4, NG_CHECKSUM_CSUM_IPV6, NG_FREE_MSG, NG_MKRESPONSE, NG_NODE_PRIVATE, NG_RESPOND_MSG, NGI_GET_MSG, NGM_CHECKSUM_CLR_STATS, NGM_CHECKSUM_COOKIE, NGM_CHECKSUM_GET_STATS, NGM_CHECKSUM_GETCLR_STATS, NGM_CHECKSUM_GETCONFIG, NGM_CHECKSUM_GETDLT, NGM_CHECKSUM_SETCONFIG, NGM_CHECKSUM_SETDLT, priv::stats, and ng_mesg::ng_msghdr::typecookie.

ng_checksum_shutdown()

static int ng_checksum_shutdown ( node_p  node )

static

Definition at line 695 of file ng_checksum.c.

References NG_NODE_PRIVATE, NG_NODE_SET_PRIVATE, and NG_NODE_UNREF.

Variable Documentation

ng_checksum_cmdlist

const struct ng_cmdlist ng_checksum_cmdlist[]

static

Definition at line 94 of file ng_checksum.c.

ng_checksum_config_type

const struct ng_parse_type ng_checksum_config_type

static

Initial value:

= {
        &ng_parse_struct_type,
        &ng_checksum_config_type_fields
}

Definition at line 82 of file ng_checksum.c.

ng_checksum_config_type_fields

const struct ng_parse_struct_field ng_checksum_config_type_fields[] = NG_CHECKSUM_CONFIG_TYPE

static

Definition at line 80 of file ng_checksum.c.

ng_checksum_constructor

ng_constructor_t ng_checksum_constructor

static

Definition at line 72 of file ng_checksum.c.

ng_checksum_disconnect

ng_disconnect_t ng_checksum_disconnect

static

Definition at line 77 of file ng_checksum.c.

ng_checksum_newhook

ng_newhook_t ng_checksum_newhook

static

Definition at line 75 of file ng_checksum.c.

ng_checksum_rcvdata

ng_rcvdata_t ng_checksum_rcvdata

static

Definition at line 76 of file ng_checksum.c.

ng_checksum_rcvmsg

ng_rcvmsg_t ng_checksum_rcvmsg

static

Definition at line 73 of file ng_checksum.c.

ng_checksum_shutdown

ng_shutdown_t ng_checksum_shutdown

static

Definition at line 74 of file ng_checksum.c.

ng_checksum_stats_fields

const struct ng_parse_struct_field ng_checksum_stats_fields[] = NG_CHECKSUM_STATS_TYPE

static

Definition at line 87 of file ng_checksum.c.

ng_checksum_stats_type

const struct ng_parse_type ng_checksum_stats_type

static

Initial value:

= {
        &ng_parse_struct_type,
        &ng_checksum_stats_fields
}

Definition at line 89 of file ng_checksum.c.

typestruct

struct ng_type typestruct

static

Initial value:

= {
        .version =      NG_ABI_VERSION,
        .name =         NG_CHECKSUM_NODE_TYPE,
        .constructor =  ng_checksum_constructor,
        .rcvmsg =       ng_checksum_rcvmsg,
        .shutdown =     ng_checksum_shutdown,
        .newhook =      ng_checksum_newhook,
        .rcvdata =      ng_checksum_rcvdata,
        .disconnect =   ng_checksum_disconnect,
        .cmdlist =      ng_checksum_cmdlist,
}

Definition at line 147 of file ng_checksum.c.