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847e1cd1
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体验新版 GitCode,发现更多精彩内容 >>
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847e1cd1
编写于
6月 13, 2013
作者:
R
Roman Bogorodskiy
提交者:
Michal Privoznik
6月 14, 2013
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电子邮件补丁
差异文件
BSD: implement virNetDevTapCreate() and virNetDevTapDelete()
Implementation uses SIOCIFCREATE2 and SIOCIFDESTROY ioctls.
上级
9614d70b
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
116 addition
and
2 deletion
+116
-2
src/util/virnetdevtap.c
src/util/virnetdevtap.c
+116
-2
未找到文件。
src/util/virnetdevtap.c
浏览文件 @
847e1cd1
...
...
@@ -275,7 +275,121 @@ cleanup:
VIR_FORCE_CLOSE
(
fd
);
return
ret
;
}
#else
/* ! TUNSETIFF */
#elif defined(SIOCIFCREATE2) && defined(SIOCIFDESTROY)
int
virNetDevTapCreate
(
char
**
ifname
,
int
*
tapfd
,
int
tapfdSize
,
unsigned
int
flags
ATTRIBUTE_UNUSED
)
{
int
s
;
struct
ifreq
ifr
;
int
ret
=
-
1
;
char
*
newifname
=
NULL
;
if
(
tapfdSize
>
1
)
{
virReportError
(
VIR_ERR_CONFIG_UNSUPPORTED
,
"%s"
,
_
(
"Multiqueue devices are not supported on this system"
));
goto
cleanup
;
}
/* As FreeBSD determines interface type by name,
* we have to create 'tap' interface first and
* then rename it to 'vnet'
*/
if
((
s
=
virNetDevSetupControl
(
"tap"
,
&
ifr
))
<
0
)
return
-
1
;
if
(
ioctl
(
s
,
SIOCIFCREATE2
,
&
ifr
)
<
0
)
{
virReportSystemError
(
errno
,
"%s"
,
_
(
"Unable to create tap device"
));
goto
cleanup
;
}
/* In case we were given exact interface name (e.g. 'vnetN'),
* we just rename to it. If we have format string like
* 'vnet%d', we need to find the first available name that
* matches this pattern
*/
if
(
strstr
(
*
ifname
,
"%d"
)
!=
NULL
)
{
int
i
;
for
(
i
=
0
;
i
<=
IF_MAXUNIT
;
i
++
)
{
char
*
newname
;
if
(
virAsprintf
(
&
newname
,
*
ifname
,
i
)
<
0
)
{
virReportOOMError
();
goto
cleanup
;
}
if
(
virNetDevExists
(
newname
)
==
0
)
{
newifname
=
newname
;
break
;
}
VIR_FREE
(
newname
);
}
if
(
newifname
)
{
VIR_FREE
(
*
ifname
);
*
ifname
=
newifname
;
}
else
{
virReportError
(
VIR_ERR_INTERNAL_ERROR
,
_
(
"Failed to generate new name for interface %s"
),
ifr
.
ifr_name
);
goto
cleanup
;
}
}
if
(
tapfd
)
{
char
*
dev_path
=
NULL
;
if
(
virAsprintf
(
&
dev_path
,
"/dev/%s"
,
ifr
.
ifr_name
)
<
0
)
{
virReportOOMError
();
goto
cleanup
;
}
if
((
*
tapfd
=
open
(
dev_path
,
O_RDWR
))
<
0
)
{
virReportSystemError
(
errno
,
_
(
"Unable to open %s"
),
dev_path
);
VIR_FREE
(
dev_path
);
goto
cleanup
;
}
VIR_FREE
(
dev_path
);
}
if
(
virNetDevSetName
(
ifr
.
ifr_name
,
*
ifname
)
==
-
1
)
{
goto
cleanup
;
}
ret
=
0
;
cleanup:
VIR_FORCE_CLOSE
(
s
);
return
ret
;
}
int
virNetDevTapDelete
(
const
char
*
ifname
)
{
int
s
;
struct
ifreq
ifr
;
int
ret
=
-
1
;
if
((
s
=
virNetDevSetupControl
(
ifname
,
&
ifr
))
<
0
)
return
-
1
;
if
(
ioctl
(
s
,
SIOCIFDESTROY
,
&
ifr
)
<
0
)
{
virReportSystemError
(
errno
,
_
(
"Unable to remove tap device %s"
),
ifname
);
goto
cleanup
;
}
ret
=
0
;
cleanup:
VIR_FORCE_CLOSE
(
s
);
return
ret
;
}
#else
int
virNetDevTapCreate
(
char
**
ifname
ATTRIBUTE_UNUSED
,
int
*
tapfd
ATTRIBUTE_UNUSED
,
int
tapfdSize
ATTRIBUTE_UNUSED
,
...
...
@@ -291,7 +405,7 @@ int virNetDevTapDelete(const char *ifname ATTRIBUTE_UNUSED)
_
(
"Unable to delete TAP devices on this platform"
));
return
-
1
;
}
#endif
/* ! TUNSETIFF */
#endif
/**
...
...
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