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nexedi
linux
Commits
edcd5821
Commit
edcd5821
authored
Aug 24, 2006
by
David S. Miller
Browse files
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Browse Files
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Plain Diff
[XFRM]: Pull xfrm_state_by{spi,src} hash table knowledge out of afinfo.
Signed-off-by:
David S. Miller
<
davem@davemloft.net
>
parent
2770834c
Changes
4
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Inline
Side-by-side
Showing
4 changed files
with
159 additions
and
197 deletions
+159
-197
include/net/xfrm.h
include/net/xfrm.h
+0
-78
net/ipv4/xfrm4_state.c
net/ipv4/xfrm4_state.c
+0
-28
net/ipv6/xfrm6_state.c
net/ipv6/xfrm6_state.c
+0
-40
net/xfrm/xfrm_state.c
net/xfrm/xfrm_state.c
+159
-51
No files found.
include/net/xfrm.h
View file @
edcd5821
...
...
@@ -243,14 +243,10 @@ extern int __xfrm_state_delete(struct xfrm_state *x);
struct
xfrm_state_afinfo
{
unsigned
short
family
;
struct
list_head
*
state_bysrc
;
struct
list_head
*
state_byspi
;
int
(
*
init_flags
)(
struct
xfrm_state
*
x
);
void
(
*
init_tempsel
)(
struct
xfrm_state
*
x
,
struct
flowi
*
fl
,
struct
xfrm_tmpl
*
tmpl
,
xfrm_address_t
*
daddr
,
xfrm_address_t
*
saddr
);
struct
xfrm_state
*
(
*
state_lookup
)(
xfrm_address_t
*
daddr
,
u32
spi
,
u8
proto
);
struct
xfrm_state
*
(
*
state_lookup_byaddr
)(
xfrm_address_t
*
daddr
,
xfrm_address_t
*
saddr
,
u8
proto
);
int
(
*
tmpl_sort
)(
struct
xfrm_tmpl
**
dst
,
struct
xfrm_tmpl
**
src
,
int
n
);
int
(
*
state_sort
)(
struct
xfrm_state
**
dst
,
struct
xfrm_state
**
src
,
int
n
);
};
...
...
@@ -431,80 +427,6 @@ static inline void xfrm_pols_put(struct xfrm_policy **pols, int npols)
}
#endif
#define XFRM_DST_HSIZE 1024
static
__inline__
unsigned
__xfrm4_dst_hash
(
xfrm_address_t
*
addr
)
{
unsigned
h
;
h
=
ntohl
(
addr
->
a4
);
h
=
(
h
^
(
h
>>
16
))
%
XFRM_DST_HSIZE
;
return
h
;
}
static
__inline__
unsigned
__xfrm6_dst_hash
(
xfrm_address_t
*
addr
)
{
unsigned
h
;
h
=
ntohl
(
addr
->
a6
[
2
]
^
addr
->
a6
[
3
]);
h
=
(
h
^
(
h
>>
16
))
%
XFRM_DST_HSIZE
;
return
h
;
}
static
__inline__
unsigned
__xfrm4_src_hash
(
xfrm_address_t
*
addr
)
{
return
__xfrm4_dst_hash
(
addr
);
}
static
__inline__
unsigned
__xfrm6_src_hash
(
xfrm_address_t
*
addr
)
{
return
__xfrm6_dst_hash
(
addr
);
}
static
__inline__
unsigned
xfrm_src_hash
(
xfrm_address_t
*
addr
,
unsigned
short
family
)
{
switch
(
family
)
{
case
AF_INET
:
return
__xfrm4_src_hash
(
addr
);
case
AF_INET6
:
return
__xfrm6_src_hash
(
addr
);
}
return
0
;
}
static
__inline__
unsigned
__xfrm4_spi_hash
(
xfrm_address_t
*
addr
,
u32
spi
,
u8
proto
)
{
unsigned
h
;
h
=
ntohl
(
addr
->
a4
^
spi
^
proto
);
h
=
(
h
^
(
h
>>
10
)
^
(
h
>>
20
))
%
XFRM_DST_HSIZE
;
return
h
;
}
static
__inline__
unsigned
__xfrm6_spi_hash
(
xfrm_address_t
*
addr
,
u32
spi
,
u8
proto
)
{
unsigned
h
;
h
=
ntohl
(
addr
->
a6
[
2
]
^
addr
->
a6
[
3
]
^
spi
^
proto
);
h
=
(
h
^
(
h
>>
10
)
^
(
h
>>
20
))
%
XFRM_DST_HSIZE
;
return
h
;
}
static
__inline__
unsigned
xfrm_spi_hash
(
xfrm_address_t
*
addr
,
u32
spi
,
u8
proto
,
unsigned
short
family
)
{
switch
(
family
)
{
case
AF_INET
:
return
__xfrm4_spi_hash
(
addr
,
spi
,
proto
);
case
AF_INET6
:
return
__xfrm6_spi_hash
(
addr
,
spi
,
proto
);
}
return
0
;
/*XXX*/
}
extern
void
__xfrm_state_destroy
(
struct
xfrm_state
*
);
static
inline
void
__xfrm_state_put
(
struct
xfrm_state
*
x
)
...
...
net/ipv4/xfrm4_state.c
View file @
edcd5821
...
...
@@ -62,38 +62,10 @@ __xfrm4_init_tempsel(struct xfrm_state *x, struct flowi *fl,
x
->
props
.
family
=
AF_INET
;
}
static
struct
xfrm_state
*
__xfrm4_state_lookup
(
xfrm_address_t
*
daddr
,
u32
spi
,
u8
proto
)
{
unsigned
h
=
__xfrm4_spi_hash
(
daddr
,
spi
,
proto
);
struct
xfrm_state
*
x
;
list_for_each_entry
(
x
,
xfrm4_state_afinfo
.
state_byspi
+
h
,
byspi
)
{
if
(
x
->
props
.
family
==
AF_INET
&&
spi
==
x
->
id
.
spi
&&
daddr
->
a4
==
x
->
id
.
daddr
.
a4
&&
proto
==
x
->
id
.
proto
)
{
xfrm_state_hold
(
x
);
return
x
;
}
}
return
NULL
;
}
/* placeholder until ipv4's code is written */
static
struct
xfrm_state
*
__xfrm4_state_lookup_byaddr
(
xfrm_address_t
*
daddr
,
xfrm_address_t
*
saddr
,
u8
proto
)
{
return
NULL
;
}
static
struct
xfrm_state_afinfo
xfrm4_state_afinfo
=
{
.
family
=
AF_INET
,
.
init_flags
=
xfrm4_init_flags
,
.
init_tempsel
=
__xfrm4_init_tempsel
,
.
state_lookup
=
__xfrm4_state_lookup
,
.
state_lookup_byaddr
=
__xfrm4_state_lookup_byaddr
,
};
void
__init
xfrm4_state_init
(
void
)
...
...
net/ipv6/xfrm6_state.c
View file @
edcd5821
...
...
@@ -63,44 +63,6 @@ __xfrm6_init_tempsel(struct xfrm_state *x, struct flowi *fl,
x
->
props
.
family
=
AF_INET6
;
}
static
struct
xfrm_state
*
__xfrm6_state_lookup_byaddr
(
xfrm_address_t
*
daddr
,
xfrm_address_t
*
saddr
,
u8
proto
)
{
struct
xfrm_state
*
x
=
NULL
;
unsigned
h
;
h
=
__xfrm6_src_hash
(
saddr
);
list_for_each_entry
(
x
,
xfrm6_state_afinfo
.
state_bysrc
+
h
,
bysrc
)
{
if
(
x
->
props
.
family
==
AF_INET6
&&
ipv6_addr_equal
((
struct
in6_addr
*
)
daddr
,
(
struct
in6_addr
*
)
x
->
id
.
daddr
.
a6
)
&&
ipv6_addr_equal
((
struct
in6_addr
*
)
saddr
,
(
struct
in6_addr
*
)
x
->
props
.
saddr
.
a6
)
&&
proto
==
x
->
id
.
proto
)
{
xfrm_state_hold
(
x
);
return
x
;
}
}
return
NULL
;
}
static
struct
xfrm_state
*
__xfrm6_state_lookup
(
xfrm_address_t
*
daddr
,
u32
spi
,
u8
proto
)
{
unsigned
h
=
__xfrm6_spi_hash
(
daddr
,
spi
,
proto
);
struct
xfrm_state
*
x
;
list_for_each_entry
(
x
,
xfrm6_state_afinfo
.
state_byspi
+
h
,
byspi
)
{
if
(
x
->
props
.
family
==
AF_INET6
&&
spi
==
x
->
id
.
spi
&&
ipv6_addr_equal
((
struct
in6_addr
*
)
daddr
,
(
struct
in6_addr
*
)
x
->
id
.
daddr
.
a6
)
&&
proto
==
x
->
id
.
proto
)
{
xfrm_state_hold
(
x
);
return
x
;
}
}
return
NULL
;
}
static
int
__xfrm6_state_sort
(
struct
xfrm_state
**
dst
,
struct
xfrm_state
**
src
,
int
n
)
{
...
...
@@ -223,8 +185,6 @@ __xfrm6_tmpl_sort(struct xfrm_tmpl **dst, struct xfrm_tmpl **src, int n)
static
struct
xfrm_state_afinfo
xfrm6_state_afinfo
=
{
.
family
=
AF_INET6
,
.
init_tempsel
=
__xfrm6_init_tempsel
,
.
state_lookup
=
__xfrm6_state_lookup
,
.
state_lookup_byaddr
=
__xfrm6_state_lookup_byaddr
,
.
tmpl_sort
=
__xfrm6_tmpl_sort
,
.
state_sort
=
__xfrm6_state_sort
,
};
...
...
net/xfrm/xfrm_state.c
View file @
edcd5821
...
...
@@ -38,6 +38,8 @@ EXPORT_SYMBOL(sysctl_xfrm_aevent_rseqth);
static
DEFINE_SPINLOCK
(
xfrm_state_lock
);
#define XFRM_DST_HSIZE 1024
/* Hash table to find appropriate SA towards given target (endpoint
* of tunnel or destination of transport mode) allowed by selector.
*
...
...
@@ -48,6 +50,48 @@ static struct list_head xfrm_state_bydst[XFRM_DST_HSIZE];
static
struct
list_head
xfrm_state_bysrc
[
XFRM_DST_HSIZE
];
static
struct
list_head
xfrm_state_byspi
[
XFRM_DST_HSIZE
];
static
__inline__
unsigned
__xfrm4_dst_hash
(
xfrm_address_t
*
addr
)
{
unsigned
h
;
h
=
ntohl
(
addr
->
a4
);
h
=
(
h
^
(
h
>>
16
))
%
XFRM_DST_HSIZE
;
return
h
;
}
static
__inline__
unsigned
__xfrm6_dst_hash
(
xfrm_address_t
*
addr
)
{
unsigned
h
;
h
=
ntohl
(
addr
->
a6
[
2
]
^
addr
->
a6
[
3
]);
h
=
(
h
^
(
h
>>
16
))
%
XFRM_DST_HSIZE
;
return
h
;
}
static
__inline__
unsigned
__xfrm4_src_hash
(
xfrm_address_t
*
addr
)
{
return
__xfrm4_dst_hash
(
addr
);
}
static
__inline__
unsigned
__xfrm6_src_hash
(
xfrm_address_t
*
addr
)
{
return
__xfrm6_dst_hash
(
addr
);
}
static
__inline__
unsigned
xfrm_src_hash
(
xfrm_address_t
*
addr
,
unsigned
short
family
)
{
switch
(
family
)
{
case
AF_INET
:
return
__xfrm4_src_hash
(
addr
);
case
AF_INET6
:
return
__xfrm6_src_hash
(
addr
);
}
return
0
;
}
static
__inline__
unsigned
xfrm_dst_hash
(
xfrm_address_t
*
addr
,
unsigned
short
family
)
{
...
...
@@ -60,6 +104,36 @@ unsigned xfrm_dst_hash(xfrm_address_t *addr, unsigned short family)
return
0
;
}
static
__inline__
unsigned
__xfrm4_spi_hash
(
xfrm_address_t
*
addr
,
u32
spi
,
u8
proto
)
{
unsigned
h
;
h
=
ntohl
(
addr
->
a4
^
spi
^
proto
);
h
=
(
h
^
(
h
>>
10
)
^
(
h
>>
20
))
%
XFRM_DST_HSIZE
;
return
h
;
}
static
__inline__
unsigned
__xfrm6_spi_hash
(
xfrm_address_t
*
addr
,
u32
spi
,
u8
proto
)
{
unsigned
h
;
h
=
ntohl
(
addr
->
a6
[
2
]
^
addr
->
a6
[
3
]
^
spi
^
proto
);
h
=
(
h
^
(
h
>>
10
)
^
(
h
>>
20
))
%
XFRM_DST_HSIZE
;
return
h
;
}
static
__inline__
unsigned
xfrm_spi_hash
(
xfrm_address_t
*
addr
,
u32
spi
,
u8
proto
,
unsigned
short
family
)
{
switch
(
family
)
{
case
AF_INET
:
return
__xfrm4_spi_hash
(
addr
,
spi
,
proto
);
case
AF_INET6
:
return
__xfrm6_spi_hash
(
addr
,
spi
,
proto
);
}
return
0
;
/*XXX*/
}
DECLARE_WAIT_QUEUE_HEAD
(
km_waitq
);
EXPORT_SYMBOL
(
km_waitq
);
...
...
@@ -342,6 +416,83 @@ xfrm_init_tempsel(struct xfrm_state *x, struct flowi *fl,
return
0
;
}
static
struct
xfrm_state
*
__xfrm_state_lookup
(
xfrm_address_t
*
daddr
,
u32
spi
,
u8
proto
,
unsigned
short
family
)
{
unsigned
int
h
=
xfrm_spi_hash
(
daddr
,
spi
,
proto
,
family
);
struct
xfrm_state
*
x
;
list_for_each_entry
(
x
,
xfrm_state_byspi
+
h
,
byspi
)
{
if
(
x
->
props
.
family
!=
family
||
x
->
id
.
spi
!=
spi
||
x
->
id
.
proto
!=
proto
)
continue
;
switch
(
family
)
{
case
AF_INET
:
if
(
x
->
id
.
daddr
.
a4
!=
daddr
->
a4
)
continue
;
break
;
case
AF_INET6
:
if
(
!
ipv6_addr_equal
((
struct
in6_addr
*
)
daddr
,
(
struct
in6_addr
*
)
x
->
id
.
daddr
.
a6
))
continue
;
break
;
};
xfrm_state_hold
(
x
);
return
x
;
}
return
NULL
;
}
static
struct
xfrm_state
*
__xfrm_state_lookup_byaddr
(
xfrm_address_t
*
daddr
,
xfrm_address_t
*
saddr
,
u8
proto
,
unsigned
short
family
)
{
unsigned
int
h
=
xfrm_src_hash
(
saddr
,
family
);
struct
xfrm_state
*
x
;
list_for_each_entry
(
x
,
xfrm_state_bysrc
+
h
,
bysrc
)
{
if
(
x
->
props
.
family
!=
family
||
x
->
id
.
proto
!=
proto
)
continue
;
switch
(
family
)
{
case
AF_INET
:
if
(
x
->
id
.
daddr
.
a4
!=
daddr
->
a4
||
x
->
props
.
saddr
.
a4
!=
saddr
->
a4
)
continue
;
break
;
case
AF_INET6
:
if
(
!
ipv6_addr_equal
((
struct
in6_addr
*
)
daddr
,
(
struct
in6_addr
*
)
x
->
id
.
daddr
.
a6
)
||
!
ipv6_addr_equal
((
struct
in6_addr
*
)
saddr
,
(
struct
in6_addr
*
)
x
->
props
.
saddr
.
a6
))
continue
;
break
;
};
xfrm_state_hold
(
x
);
return
x
;
}
return
NULL
;
}
static
inline
struct
xfrm_state
*
__xfrm_state_locate
(
struct
xfrm_state
*
x
,
int
use_spi
,
int
family
)
{
if
(
use_spi
)
return
__xfrm_state_lookup
(
&
x
->
id
.
daddr
,
x
->
id
.
spi
,
x
->
id
.
proto
,
family
);
else
return
__xfrm_state_lookup_byaddr
(
&
x
->
id
.
daddr
,
&
x
->
props
.
saddr
,
x
->
id
.
proto
,
family
);
}
struct
xfrm_state
*
xfrm_state_find
(
xfrm_address_t
*
daddr
,
xfrm_address_t
*
saddr
,
struct
flowi
*
fl
,
struct
xfrm_tmpl
*
tmpl
,
...
...
@@ -353,13 +504,6 @@ xfrm_state_find(xfrm_address_t *daddr, xfrm_address_t *saddr,
int
acquire_in_progress
=
0
;
int
error
=
0
;
struct
xfrm_state
*
best
=
NULL
;
struct
xfrm_state_afinfo
*
afinfo
;
afinfo
=
xfrm_state_get_afinfo
(
family
);
if
(
afinfo
==
NULL
)
{
*
err
=
-
EAFNOSUPPORT
;
return
NULL
;
}
spin_lock_bh
(
&
xfrm_state_lock
);
list_for_each_entry
(
x
,
xfrm_state_bydst
+
h
,
bydst
)
{
...
...
@@ -406,8 +550,8 @@ xfrm_state_find(xfrm_address_t *daddr, xfrm_address_t *saddr,
x
=
best
;
if
(
!
x
&&
!
error
&&
!
acquire_in_progress
)
{
if
(
tmpl
->
id
.
spi
&&
(
x0
=
afinfo
->
state_lookup
(
daddr
,
tmpl
->
id
.
spi
,
tmpl
->
id
.
proto
))
!=
NULL
)
{
(
x0
=
__xfrm_
state_lookup
(
daddr
,
tmpl
->
id
.
spi
,
tmpl
->
id
.
proto
,
family
))
!=
NULL
)
{
xfrm_state_put
(
x0
);
error
=
-
EEXIST
;
goto
out
;
...
...
@@ -457,7 +601,6 @@ xfrm_state_find(xfrm_address_t *daddr, xfrm_address_t *saddr,
else
*
err
=
acquire_in_progress
?
-
EAGAIN
:
error
;
spin_unlock_bh
(
&
xfrm_state_lock
);
xfrm_state_put_afinfo
(
afinfo
);
return
x
;
}
...
...
@@ -584,34 +727,20 @@ static struct xfrm_state *__find_acq_core(unsigned short family, u8 mode, u32 re
return
x
;
}
static
inline
struct
xfrm_state
*
__xfrm_state_locate
(
struct
xfrm_state_afinfo
*
afinfo
,
struct
xfrm_state
*
x
,
int
use_spi
)
{
if
(
use_spi
)
return
afinfo
->
state_lookup
(
&
x
->
id
.
daddr
,
x
->
id
.
spi
,
x
->
id
.
proto
);
else
return
afinfo
->
state_lookup_byaddr
(
&
x
->
id
.
daddr
,
&
x
->
props
.
saddr
,
x
->
id
.
proto
);
}
static
struct
xfrm_state
*
__xfrm_find_acq_byseq
(
u32
seq
);
int
xfrm_state_add
(
struct
xfrm_state
*
x
)
{
struct
xfrm_state_afinfo
*
afinfo
;
struct
xfrm_state
*
x1
;
int
family
;
int
err
;
int
use_spi
=
xfrm_id_proto_match
(
x
->
id
.
proto
,
IPSEC_PROTO_ANY
);
family
=
x
->
props
.
family
;
afinfo
=
xfrm_state_get_afinfo
(
family
);
if
(
unlikely
(
afinfo
==
NULL
))
return
-
EAFNOSUPPORT
;
spin_lock_bh
(
&
xfrm_state_lock
);
x1
=
__xfrm_state_locate
(
afinfo
,
x
,
use_spi
);
x1
=
__xfrm_state_locate
(
x
,
use_spi
,
family
);
if
(
x1
)
{
xfrm_state_put
(
x1
);
x1
=
NULL
;
...
...
@@ -637,7 +766,6 @@ int xfrm_state_add(struct xfrm_state *x)
out:
spin_unlock_bh
(
&
xfrm_state_lock
);
xfrm_state_put_afinfo
(
afinfo
);
if
(
!
err
)
xfrm_flush_all_bundles
();
...
...
@@ -653,17 +781,12 @@ EXPORT_SYMBOL(xfrm_state_add);
int
xfrm_state_update
(
struct
xfrm_state
*
x
)
{
struct
xfrm_state_afinfo
*
afinfo
;
struct
xfrm_state
*
x1
;
int
err
;
int
use_spi
=
xfrm_id_proto_match
(
x
->
id
.
proto
,
IPSEC_PROTO_ANY
);
afinfo
=
xfrm_state_get_afinfo
(
x
->
props
.
family
);
if
(
unlikely
(
afinfo
==
NULL
))
return
-
EAFNOSUPPORT
;
spin_lock_bh
(
&
xfrm_state_lock
);
x1
=
__xfrm_state_locate
(
afinfo
,
x
,
use_spi
);
x1
=
__xfrm_state_locate
(
x
,
use_spi
,
x
->
props
.
family
);
err
=
-
ESRCH
;
if
(
!
x1
)
...
...
@@ -683,7 +806,6 @@ int xfrm_state_update(struct xfrm_state *x)
out:
spin_unlock_bh
(
&
xfrm_state_lock
);
xfrm_state_put_afinfo
(
afinfo
);
if
(
err
)
return
err
;
...
...
@@ -776,14 +898,10 @@ xfrm_state_lookup(xfrm_address_t *daddr, u32 spi, u8 proto,
unsigned
short
family
)
{
struct
xfrm_state
*
x
;
struct
xfrm_state_afinfo
*
afinfo
=
xfrm_state_get_afinfo
(
family
);
if
(
!
afinfo
)
return
NULL
;
spin_lock_bh
(
&
xfrm_state_lock
);
x
=
afinfo
->
state_lookup
(
daddr
,
spi
,
proto
);
x
=
__xfrm_state_lookup
(
daddr
,
spi
,
proto
,
family
);
spin_unlock_bh
(
&
xfrm_state_lock
);
xfrm_state_put_afinfo
(
afinfo
);
return
x
;
}
EXPORT_SYMBOL
(
xfrm_state_lookup
);
...
...
@@ -793,14 +911,10 @@ xfrm_state_lookup_byaddr(xfrm_address_t *daddr, xfrm_address_t *saddr,
u8
proto
,
unsigned
short
family
)
{
struct
xfrm_state
*
x
;
struct
xfrm_state_afinfo
*
afinfo
=
xfrm_state_get_afinfo
(
family
);
if
(
!
afinfo
)
return
NULL
;
spin_lock_bh
(
&
xfrm_state_lock
);
x
=
afinfo
->
state_lookup_byaddr
(
daddr
,
saddr
,
proto
);
x
=
__xfrm_state_lookup_byaddr
(
daddr
,
saddr
,
proto
,
family
);
spin_unlock_bh
(
&
xfrm_state_lock
);
xfrm_state_put_afinfo
(
afinfo
);
return
x
;
}
EXPORT_SYMBOL
(
xfrm_state_lookup_byaddr
);
...
...
@@ -1272,11 +1386,8 @@ int xfrm_state_register_afinfo(struct xfrm_state_afinfo *afinfo)
write_lock_bh
(
&
xfrm_state_afinfo_lock
);
if
(
unlikely
(
xfrm_state_afinfo
[
afinfo
->
family
]
!=
NULL
))
err
=
-
ENOBUFS
;
else
{
afinfo
->
state_bysrc
=
xfrm_state_bysrc
;
afinfo
->
state_byspi
=
xfrm_state_byspi
;
else
xfrm_state_afinfo
[
afinfo
->
family
]
=
afinfo
;
}
write_unlock_bh
(
&
xfrm_state_afinfo_lock
);
return
err
;
}
...
...
@@ -1293,11 +1404,8 @@ int xfrm_state_unregister_afinfo(struct xfrm_state_afinfo *afinfo)
if
(
likely
(
xfrm_state_afinfo
[
afinfo
->
family
]
!=
NULL
))
{
if
(
unlikely
(
xfrm_state_afinfo
[
afinfo
->
family
]
!=
afinfo
))
err
=
-
EINVAL
;
else
{
else
xfrm_state_afinfo
[
afinfo
->
family
]
=
NULL
;
afinfo
->
state_byspi
=
NULL
;
afinfo
->
state_bysrc
=
NULL
;
}
}
write_unlock_bh
(
&
xfrm_state_afinfo_lock
);
return
err
;
...
...
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