ip_encap.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/eventhandler.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/mutex.h>
#include <sys/mbuf.h>
#include <sys/errno.h>
#include <sys/socket.h>
#include <net/if.h>
#include <net/if_var.h>
#include <netinet/in.h>
#include <netinet/ip_var.h>
#include <netinet/ip_encap.h>

Include dependency graph for ip_encap.c:

Go to the source code of this file.

Data Structures
struct	encaptab
struct	srcaddrtab

Macros
#define	ENCAP_WLOCK()   mtx_lock(&encapmtx)
#define	ENCAP_WUNLOCK()   mtx_unlock(&encapmtx)
#define	ENCAP_RLOCK_TRACKER   struct epoch_tracker encap_et
#define	ENCAP_RLOCK()   NET_EPOCH_ENTER(encap_et)
#define	ENCAP_RUNLOCK()   NET_EPOCH_EXIT(encap_et)
#define	ENCAP_WAIT()   NET_EPOCH_WAIT()
#define	SRCADDR_WLOCK()   mtx_lock(&srcaddrmtx)
#define	SRCADDR_WUNLOCK()   mtx_unlock(&srcaddrmtx)
#define	SRCADDR_RLOCK_TRACKER   struct epoch_tracker srcaddr_et
#define	SRCADDR_RLOCK()    epoch_enter_preempt(net_epoch_preempt, &srcaddr_et)
#define	SRCADDR_RUNLOCK()    epoch_exit_preempt(net_epoch_preempt, &srcaddr_et)
#define	SRCADDR_WAIT()   epoch_wait_preempt(net_epoch_preempt)

Functions
	__FBSDID ("$FreeBSD$")
static	MALLOC_DEFINE (M_NETADDR, "encap_export_host", "Export host address structure")
	CK_LIST_HEAD (encaptab_head, encaptab)
	CK_LIST_HEAD (srcaddrtab_head, srcaddrtab)
	MTX_SYSINIT (encapmtx, &encapmtx, "encapmtx", MTX_DEF)
	MTX_SYSINIT (srcaddrmtx, &srcaddrmtx, "srcaddrmtx", MTX_DEF)
static void	srcaddr_change_event (void *arg __unused, struct ifnet *ifp, struct ifaddr *ifa, int event)
	EVENTHANDLER_DEFINE (ifaddr_event_ext, srcaddr_change_event, NULL, 0)
static struct srcaddrtab *	encap_register_srcaddr (struct srcaddrtab_head *head, encap_srcaddr_t func, void *arg, int mflags)
static int	encap_unregister_srcaddr (struct srcaddrtab_head *head, const struct srcaddrtab *cookie)
static struct encaptab *	encap_attach (struct encaptab_head *head, const struct encap_config *cfg, void *arg, int mflags)
static int	encap_detach (struct encaptab_head *head, const struct encaptab *cookie)
static int	encap_input (struct encaptab_head *head, struct mbuf *m, int off, int proto)

Variables
static struct mtx encapmtx	srcaddrmtx

Macro Definition Documentation

ENCAP_RLOCK

#define ENCAP_RLOCK

(

)

NET_EPOCH_ENTER(encap_et)

Definition at line 128 of file ip_encap.c.

ENCAP_RLOCK_TRACKER

#define ENCAP_RLOCK_TRACKER   struct epoch_tracker encap_et

Definition at line 127 of file ip_encap.c.

ENCAP_RUNLOCK

#define ENCAP_RUNLOCK

(

)

NET_EPOCH_EXIT(encap_et)

Definition at line 129 of file ip_encap.c.

ENCAP_WAIT

#define ENCAP_WAIT

(

)

NET_EPOCH_WAIT()

Definition at line 130 of file ip_encap.c.

ENCAP_WLOCK

#define ENCAP_WLOCK

(

)

mtx_lock(&encapmtx)

Definition at line 125 of file ip_encap.c.

ENCAP_WUNLOCK

#define ENCAP_WUNLOCK

(

)

mtx_unlock(&encapmtx)

Definition at line 126 of file ip_encap.c.

SRCADDR_RLOCK

#define SRCADDR_RLOCK

(

)

epoch_enter_preempt(net_epoch_preempt, &srcaddr_et)

Definition at line 135 of file ip_encap.c.

SRCADDR_RLOCK_TRACKER

#define SRCADDR_RLOCK_TRACKER   struct epoch_tracker srcaddr_et

Definition at line 134 of file ip_encap.c.

SRCADDR_RUNLOCK

#define SRCADDR_RUNLOCK

(

)

epoch_exit_preempt(net_epoch_preempt, &srcaddr_et)

Definition at line 137 of file ip_encap.c.

SRCADDR_WAIT

#define SRCADDR_WAIT

(

)

epoch_wait_preempt(net_epoch_preempt)

Definition at line 139 of file ip_encap.c.

SRCADDR_WLOCK

#define SRCADDR_WLOCK

(

)

mtx_lock(&srcaddrmtx)

Definition at line 132 of file ip_encap.c.

SRCADDR_WUNLOCK

#define SRCADDR_WUNLOCK

(

)

mtx_unlock(&srcaddrmtx)

Definition at line 133 of file ip_encap.c.

Function Documentation

__FBSDID()

__FBSDID

(

"$FreeBSD$"

)

CK_LIST_HEAD() [1/2]

CK_LIST_HEAD	(	encaptab_head	,
		encaptab
	)

CK_LIST_HEAD() [2/2]

CK_LIST_HEAD	(	srcaddrtab_head	,
		srcaddrtab
	)

encap_attach()

static struct encaptab * encap_attach ( struct encaptab_head *  head, const struct encap_config *  cfg, void *  arg, int  mflags  )

static

Definition at line 236 of file ip_encap.c.

References encap_config::check, ENCAP_DRV_LOOKUP, ENCAP_WLOCK, ENCAP_WUNLOCK, encap_config::exact_match, encap_config::input, encap_config::lookup, encap_config::min_length, and encap_config::proto.

encap_detach()

static int encap_detach ( struct encaptab_head *  head, const struct encaptab *  cookie  )

static

Definition at line 273 of file ip_encap.c.

References cookie, ENCAP_WAIT, ENCAP_WLOCK, and ENCAP_WUNLOCK.

encap_input()

static int encap_input ( struct encaptab_head *  head, struct mbuf *  m, int  off, int  proto  )

static

Definition at line 292 of file ip_encap.c.

References ENCAP_DRV_LOOKUP, ENCAP_RLOCK, ENCAP_RLOCK_TRACKER, and ENCAP_RUNLOCK.

encap_register_srcaddr()

static struct srcaddrtab * encap_register_srcaddr ( struct srcaddrtab_head *  head, encap_srcaddr_t  func, void *  arg, int  mflags  )

static

Definition at line 186 of file ip_encap.c.

References SRCADDR_WLOCK, and SRCADDR_WUNLOCK.

encap_unregister_srcaddr()

static int encap_unregister_srcaddr ( struct srcaddrtab_head *  head, const struct srcaddrtab *  cookie  )

static

Definition at line 216 of file ip_encap.c.

References cookie, SRCADDR_WAIT, SRCADDR_WLOCK, and SRCADDR_WUNLOCK.

EVENTHANDLER_DEFINE()

EVENTHANDLER_DEFINE	(	ifaddr_event_ext	,
		srcaddr_change_event	,
		NULL	,
		0
	)

MALLOC_DEFINE()

static MALLOC_DEFINE ( M_NETADDR  , "encap_export_host"  , "Export host address structure"    )

static

MTX_SYSINIT() [1/2]

MTX_SYSINIT	(	encapmtx	,
		&	encapmtx,
		"encapmtx"	,
		MTX_DEF
	)

MTX_SYSINIT() [2/2]

MTX_SYSINIT	(	srcaddrmtx	,
		&	srcaddrmtx,
		"srcaddrmtx"	,
		MTX_DEF
	)

srcaddr_change_event()

static void srcaddr_change_event ( void *arg  __unused, struct ifnet *  ifp, struct ifaddr *  ifa, int  event  )

static

Definition at line 151 of file ip_encap.c.

References ipv4_srcaddrtab, SRCADDR_RLOCK, SRCADDR_RLOCK_TRACKER, and SRCADDR_RUNLOCK.

Variable Documentation

srcaddrmtx

struct mtx encapmtx srcaddrmtx

static

Definition at line 122 of file ip_encap.c.