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/*-
* Copyright (c) 2006-2009 University of Zagreb
* Copyright (c) 2006-2009 FreeBSD Foundation
*
* This software was developed by the University of Zagreb and the
* FreeBSD Foundation under sponsorship by the Stichting NLnet and the
* FreeBSD Foundation.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _SYS_VIMAGE_H_
#define _SYS_VIMAGE_H_
#include <sys/proc.h>
#include <sys/queue.h>
/* Interim userspace API. */
struct vi_req {
int vi_api_cookie; /* Catch API mismatch. */
int vi_req_action; /* What to do with this request? */
u_short vi_proc_count; /* Current number of processes. */
int vi_if_count; /* Current number of ifnets. */
int vi_sock_count;
char vi_name[MAXPATHLEN];
char vi_if_xname[MAXPATHLEN]; /* XXX should be IFNAMSIZ */
};
#define VI_CREATE 0x00000001
#define VI_DESTROY 0x00000002
#define VI_SWITCHTO 0x00000008
#define VI_IFACE 0x00000010
#define VI_GET 0x00000100
#define VI_GETNEXT 0x00000200
#define VI_GETNEXT_RECURSE 0x00000300
#define VI_API_VERSION 1 /* Bump on struct changes. */
#define VI_API_COOKIE ((sizeof(struct vi_req) << 16) | VI_API_VERSION)
#ifdef _KERNEL
#if defined(VIMAGE) && defined(VIMAGE_GLOBALS)
#error "You cannot have both option VIMAGE and option VIMAGE_GLOBALS!"
#endif
#ifdef INVARIANTS
#define VNET_DEBUG
#endif
struct vimage;
struct vprocg;
struct vnet;
struct vi_req;
struct ifnet;
struct kld_sym_lookup;
struct thread;
typedef int vnet_attach_fn(const void *);
typedef int vnet_detach_fn(const void *);
#ifndef VIMAGE_GLOBALS
struct vnet_symmap {
char *name;
size_t offset;
size_t size;
};
typedef struct vnet_symmap vnet_symmap_t;
struct vnet_modinfo {
u_int vmi_id;
u_int vmi_dependson;
char *vmi_name;
vnet_attach_fn *vmi_iattach;
vnet_detach_fn *vmi_idetach;
size_t vmi_size;
struct vnet_symmap *vmi_symmap;
};
typedef struct vnet_modinfo vnet_modinfo_t;
struct vnet_modlink {
TAILQ_ENTRY(vnet_modlink) vml_mod_le;
const struct vnet_modinfo *vml_modinfo;
const void *vml_iarg;
const char *vml_iname;
};
/* Stateful modules. */
#define VNET_MOD_NET 0 /* MUST be 0 - implicit dependency */
#define VNET_MOD_NETGRAPH 1
#define VNET_MOD_INET 2
#define VNET_MOD_INET6 3
#define VNET_MOD_IPSEC 4
#define VNET_MOD_IPFW 5
#define VNET_MOD_DUMMYNET 6
#define VNET_MOD_PF 7
#define VNET_MOD_ALTQ 8
#define VNET_MOD_IPX 9
#define VNET_MOD_ATALK 10
#define VNET_MOD_ACCF_HTTP 11
#define VNET_MOD_IGMP 12
#define VNET_MOD_MLD 13
/* Stateless modules. */
#define VNET_MOD_IF_CLONE 19
#define VNET_MOD_NG_ETHER 20
#define VNET_MOD_NG_IFACE 21
#define VNET_MOD_NG_EIFACE 22
#define VNET_MOD_ESP 23
#define VNET_MOD_IPIP 24
#define VNET_MOD_AH 25
#define VNET_MOD_IPCOMP 26
#define VNET_MOD_GIF 27
#define VNET_MOD_ARP 28
#define VNET_MOD_RTABLE 29
#define VNET_MOD_LOIF 30
#define VNET_MOD_DOMAIN 31
#define VNET_MOD_DYNAMIC_START 32
#define VNET_MOD_MAX 64
/* Major module IDs for vimage sysctl virtualization. */
#define V_GLOBAL 0 /* global variable - no indirection */
#define V_NET 1
#define V_PROCG 2
/* Name mappings for minor module IDs in vimage sysctl virtualization. */
#define V_MOD_vnet_net VNET_MOD_NET
#define V_MOD_vnet_netgraph VNET_MOD_NETGRAPH
#define V_MOD_vnet_inet VNET_MOD_INET
#define V_MOD_vnet_inet6 VNET_MOD_INET6
#define V_MOD_vnet_ipfw VNET_MOD_IPFW
#define V_MOD_vnet_pf VNET_MOD_PF
#define V_MOD_vnet_gif VNET_MOD_GIF
#define V_MOD_vnet_ipsec VNET_MOD_IPSEC
#define V_MOD_vprocg 0 /* no minor module ids like in vnet */
int vi_symlookup(struct kld_sym_lookup *, char *);
int vi_td_ioctl(u_long, struct vi_req *, struct thread *);
int vi_if_move(struct thread *, struct ifnet *, char *, int,
struct vi_req *);
int vi_child_of(struct vimage *, struct vimage *);
struct vimage *vimage_by_name(struct vimage *, char *);
void vnet_mod_register(const struct vnet_modinfo *);
void vnet_mod_register_multi(const struct vnet_modinfo *, void *, char *);
void vnet_mod_deregister(const struct vnet_modinfo *);
void vnet_mod_deregister_multi(const struct vnet_modinfo *, void *, char *);
struct vnet *vnet_alloc(void);
void vnet_destroy(struct vnet *);
#endif /* !VIMAGE_GLOBALS */
#ifdef VIMAGE_GLOBALS
#define VSYM(base, sym) (sym)
#else /* !VIMAGE_GLOBALS */
#ifdef VIMAGE
#define VSYM(base, sym) ((base)->_ ## sym)
#else /* !VIMAGE */
#define VSYM(base, sym) (base ## _0._ ## sym)
#endif /* VIMAGE */
#endif /* VIMAGE_GLOBALS */
#ifndef VIMAGE_GLOBALS
#ifdef VIMAGE
/*
* Casted NULL hack is needed for harvesting sizeofs() of fields inside
* struct vnet_* containers at compile time.
*/
#define VNET_SYMMAP(mod, name) \
{ #name, offsetof(struct vnet_ ## mod, _ ## name), \
sizeof(((struct vnet_ ## mod *) NULL)->_ ## name) }
#else /* !VIMAGE */
#define VNET_SYMMAP(mod, name) \
{ #name, (size_t) &(vnet_ ## mod ## _0._ ## name), \
sizeof(vnet_ ## mod ## _0._ ## name) }
#endif /* VIMAGE */
#define VNET_SYMMAP_END { NULL, 0 }
struct vimage {
LIST_ENTRY(vimage) vi_le; /* all vimage list */
LIST_ENTRY(vimage) vi_sibling; /* vimages with same parent */
LIST_HEAD(, vimage) vi_child_head; /* direct offspring list */
struct vimage *vi_parent; /* ptr to parent vimage */
u_int vi_id; /* ID num */
volatile u_int vi_ucredrefc; /* # of ucreds pointing to us */
char vi_name[MAXHOSTNAMELEN];
struct vnet *v_net;
struct vprocg *v_procg;
};
struct vnet {
void *mod_data[VNET_MOD_MAX];
LIST_ENTRY(vnet) vnet_le; /* all vnets list */
u_int vnet_magic_n;
u_int ifcnt;
u_int sockcnt;
};
struct vprocg {
LIST_ENTRY(vprocg) vprocg_le;
u_int vprocg_id; /* ID num */
u_int nprocs;
};
#ifdef VIMAGE
LIST_HEAD(vimage_list_head, vimage);
extern struct vimage_list_head vimage_head;
#else /* !VIMAGE */
extern struct vprocg vprocg_0;
#endif /* VIMAGE */
#endif /* !VIMAGE_GLOBALS */
#define curvnet curthread->td_vnet
#define VNET_MAGIC_N 0x3e0d8f29
#ifdef VIMAGE
#ifdef VNET_DEBUG
#define VNET_ASSERT(condition) \
if (!(condition)) { \
printf("VNET_ASSERT @ %s:%d %s():\n", \
__FILE__, __LINE__, __FUNCTION__); \
panic(#condition); \
}
#define CURVNET_SET_QUIET(arg) \
VNET_ASSERT((arg)->vnet_magic_n == VNET_MAGIC_N); \
struct vnet *saved_vnet = curvnet; \
const char *saved_vnet_lpush = curthread->td_vnet_lpush; \
curvnet = arg; \
curthread->td_vnet_lpush = __FUNCTION__;
#define CURVNET_SET_VERBOSE(arg) \
CURVNET_SET_QUIET(arg) \
if (saved_vnet) \
printf("CURVNET_SET(%p) in %s() on cpu %d, prev %p in %s()\n", \
curvnet, curthread->td_vnet_lpush, curcpu, \
saved_vnet, saved_vnet_lpush);
#define CURVNET_SET(arg) CURVNET_SET_VERBOSE(arg)
#define CURVNET_RESTORE() \
VNET_ASSERT(saved_vnet == NULL || \
saved_vnet->vnet_magic_n == VNET_MAGIC_N); \
curvnet = saved_vnet; \
curthread->td_vnet_lpush = saved_vnet_lpush;
#else /* !VNET_DEBUG */
#define VNET_ASSERT(condition)
#define CURVNET_SET(arg) \
struct vnet *saved_vnet = curvnet; \
curvnet = arg;
#define CURVNET_SET_VERBOSE(arg) CURVNET_SET(arg)
#define CURVNET_SET_QUIET(arg) CURVNET_SET(arg)
#define CURVNET_RESTORE() \
curvnet = saved_vnet;
#endif /* VNET_DEBUG */
#else /* !VIMAGE */
#define VNET_ASSERT(condition)
#define CURVNET_SET(arg)
#define CURVNET_SET_QUIET(arg)
#define CURVNET_RESTORE()
#endif /* !VIMAGE */
#ifdef VIMAGE
#ifdef VNET_DEBUG
#define INIT_FROM_VNET(vnet, modindex, modtype, sym) \
if (vnet == NULL || vnet != curvnet) \
panic("in %s:%d %s()\n vnet=%p curvnet=%p", \
__FILE__, __LINE__, __FUNCTION__, \
vnet, curvnet); \
modtype *sym = (vnet)->mod_data[modindex];
#else /* !VNET_DEBUG */
#define INIT_FROM_VNET(vnet, modindex, modtype, sym) \
modtype *sym = (vnet)->mod_data[modindex];
#endif /* !VNET_DEBUG */
#else /* !VIMAGE */
#define INIT_FROM_VNET(vnet, modindex, modtype, sym)
#endif /* VIMAGE */
#ifdef VIMAGE
LIST_HEAD(vnet_list_head, vnet);
extern struct vnet_list_head vnet_head;
extern struct vnet *vnet0;
#define VNET_ITERATOR_DECL(arg) struct vnet *arg;
#define VNET_FOREACH(arg) LIST_FOREACH(arg, &vnet_head, vnet_le)
#else
#define VNET_ITERATOR_DECL(arg)
#define VNET_FOREACH(arg)
#endif
#ifdef VIMAGE
LIST_HEAD(vprocg_list_head, vprocg);
extern struct vprocg_list_head vprocg_head;
#define INIT_VPROCG(arg) struct vprocg *vprocg = (arg);
#else
#define INIT_VPROCG(arg)
#endif
#ifdef VIMAGE
#define IS_DEFAULT_VIMAGE(arg) ((arg)->vi_id == 0)
#define IS_DEFAULT_VNET(arg) ((arg) == vnet0)
#else
#define IS_DEFAULT_VIMAGE(arg) 1
#define IS_DEFAULT_VNET(arg) 1
#endif
#ifdef VIMAGE
#define CRED_TO_VNET(cr) \
(IS_DEFAULT_VIMAGE((cr)->cr_vimage) ? (cr)->cr_prison->pr_vnet \
: (cr)->cr_vimage->v_net)
#define TD_TO_VIMAGE(td) (td)->td_ucred->cr_vimage
#define TD_TO_VNET(td) CRED_TO_VNET((td)->td_ucred)
#define TD_TO_VPROCG(td) (td)->td_ucred->cr_vimage->v_procg
#define P_TO_VIMAGE(p) (p)->p_ucred->cr_vimage
#define P_TO_VNET(p) CRED_TO_VNET((p)->p_ucred)
#define P_TO_VPROCG(p) (p)->p_ucred->cr_vimage->v_procg
#else /* !VIMAGE */
#define CRED_TO_VNET(cr) NULL
#define TD_TO_VIMAGE(td) NULL
#define TD_TO_VNET(td) NULL
#define P_TO_VIMAGE(p) NULL
#define P_TO_VNET(p) NULL
#ifdef VIMAGE_GLOBALS
#define TD_TO_VPROCG(td) NULL
#define P_TO_VPROCG(p) NULL
#else /* !VIMAGE_GLOBALS */
#define TD_TO_VPROCG(td) &vprocg_0
#define P_TO_VPROCG(p) &vprocg_0
#endif /* VIMAGE_GLOBALS */
#endif /* VIMAGE */
/* Non-VIMAGE null-macros */
#define VNET_LIST_RLOCK()
#define VNET_LIST_RUNLOCK()
/* XXX those defines bellow should probably go into vprocg.h and vcpu.h */
#define VPROCG(sym) VSYM(vprocg, sym)
/*
* Size-guards for the vimage structures.
* If you need to update the values you MUST increment __FreeBSD_version.
* See description further down to see how to get the new values.
*/
#ifdef __amd64__
#define SIZEOF_vnet_net 192
#define SIZEOF_vnet_inet 4424
#define SIZEOF_vnet_inet6 8808
#define SIZEOF_vnet_ipsec 31160
#endif
#ifdef __arm__
#define SIZEOF_vnet_net 104
#define SIZEOF_vnet_inet 2616
#define SIZEOF_vnet_inet6 8524
#define SIZEOF_vnet_ipsec 1
#endif
#ifdef __i386__ /* incl. pc98 */
#define SIZEOF_vnet_net 104
#define SIZEOF_vnet_inet 2612
#define SIZEOF_vnet_inet6 8512
#define SIZEOF_vnet_ipsec 31024
#endif
#ifdef __ia64__
#define SIZEOF_vnet_net 192
#define SIZEOF_vnet_inet 4424
#define SIZEOF_vnet_inet6 8808
#define SIZEOF_vnet_ipsec 31160
#endif
#ifdef __mips__
#define SIZEOF_vnet_net 104
#define SIZEOF_vnet_inet 2648
#define SIZEOF_vnet_inet6 8544
#define SIZEOF_vnet_ipsec 1
#endif
#ifdef __powerpc__
#define SIZEOF_vnet_net 104
#define SIZEOF_vnet_inet 2640
#define SIZEOF_vnet_inet6 8520
#define SIZEOF_vnet_ipsec 31048
#endif
#ifdef __sparc64__ /* incl. sun4v */
#define SIZEOF_vnet_net 192
#define SIZEOF_vnet_inet 4424
#define SIZEOF_vnet_inet6 8808
#define SIZEOF_vnet_ipsec 31160
#endif
#ifndef SIZEOF_vnet_net
#error "SIZEOF_vnet_net no defined for this architecture."
#endif
#ifndef SIZEOF_vnet_inet
#error "SIZEOF_vnet_inet no defined for this architecture."
#endif
#ifndef SIZEOF_vnet_inet6
#error "SIZEOF_vnet_inet6 no defined for this architecture."
#endif
#ifndef SIZEOF_vnet_ipsec
#error "SIZEOF_vnet_ipsec no defined for this architecture."
#endif
/*
* x must be a positive integer constant (expected value),
* y must be compile-time evaluated to a positive integer,
* e.g. CTASSERT_EQUAL(FOO_EXPECTED_SIZE, sizeof (struct foo));
* One needs to compile with -Wuninitialized and thus at least -O
* for this to trigger and -Werror if it should be fatal.
*/
#define CTASSERT_EQUAL(x, y) \
static int __attribute__((__used__)) \
__attribute__((__section__(".debug_ctassert_equal"))) \
__CONCAT(__ctassert_equal_at_line_, __LINE__)(void); \
\
static int __attribute__((__used__)) \
__attribute__((__section__(".debug_ctassert_equal"))) \
__CONCAT(__ctassert_equal_at_line_, __LINE__)(void) \
{ \
int __CONCAT(__CONCAT(__expected_, x), \
_but_got)[(y) + (x)]; \
__CONCAT(__CONCAT(__expected_, x), _but_got)[(x)] = 1; \
return (__CONCAT(__CONCAT(__expected_, x), \
_but_got)[(y)]); \
} \
struct __hack
/*
* x shall be the expected value (SIZEOF_vnet_* from above)
* and y shall be the real size (sizeof(struct vnet_*)).
* If you run into the CTASSERT() you want to compile a universe
* with COPTFLAGS+="-O -Wuninitialized -DVIMAGE_CHECK_SIZES".
* This should give you the errors for the proper values defined above.
* Make sure to re-run universe with the proper values afterwards -
* -DMAKE_JUST_KERNELS should be enough.
*
* Note:
* CTASSERT() takes precedence in the current FreeBSD world thus the
* CTASSERT_EQUAL() will not neccessarily trigger if one uses both.
* But as CTASSERT_EQUAL() needs special compile time options, we
* want the default case to be backed by CTASSERT().
*/
#if 0
#ifndef VIMAGE_CTASSERT
#ifdef VIMAGE_CHECK_SIZES
#define VIMAGE_CTASSERT(x, y) \
CTASSERT_EQUAL(x, y)
#else
#define VIMAGE_CTASSERT(x, y) \
CTASSERT_EQUAL(x, y); \
CTASSERT(x == 0 || x == y)
#endif
#endif
#else
#define VIMAGE_CTASSERT(x, y) struct __hack
#endif
#endif /* _KERNEL */
#endif /* !_SYS_VIMAGE_H_ */
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