Commit Graph

45208 Commits

Author SHA1 Message Date
Daniel P. Berrange
491e5e85ef tests: redirect stderr to stdout for iotests
The python I/O tests helper for running qemu-img/qemu-io
setup stdout to be captured to a pipe, but left stderr
untouched. As a result, if something failed in qemu-img/
qemu-io, data written to stderr would get output directly
and not line up with data on the test stdout due to
buffering.  If we explicitly redirect stderr to the same
pipe as stdout, things are much clearer when they go
wrong.

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-03-30 11:59:32 +02:00
Daniel P. Berrange
4ef130fca8 qemu-img/qemu-io: don't prompt for passwords if not required
The qemu-img/qemu-io tools prompt for disk encryption passwords
regardless of whether any are actually required. Adding a check
on bdrv_key_required() avoids this prompt for disk formats which
have been converted to the QCryptoSecret APIs.

This is just a temporary hack to ensure the block I/O tests
continue to work after each patch, since the last patch will
completely delete all the password prompting code.

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-03-30 11:59:32 +02:00
Daniel P. Berrange
abb06c5ac1 block: add flag to indicate that no I/O will be performed
When opening an image it is useful to know whether the caller
intends to perform I/O on the image or not. In the case of
encrypted images this will allow the block driver to avoid
having to prompt for decryption keys when we merely want to
query header metadata about the image. eg qemu-img info

This flag is enforced at the top level only, since even if
we don't want todo I/O on the 'qcow2' file payload, the
underlying 'file' driver will still need todo I/O to read
the qcow2 header, for example.

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-03-30 11:59:32 +02:00
Max Reitz
5430215699 block/qapi: Pass bdrv_query_blk_stats() s->stats
bdrv_query_blk_stats() does not need access to all of BlockStats,
BlockDeviceStats is enough and is what this function is actually
supposed to fill.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-03-30 11:59:32 +02:00
Max Reitz
0e8f44bee9 block/qapi: Set s->device in bdrv_query_stats()
This is the only instance of bdrv_query_blk_stats() accessing anything
in the BlockStats structure other than s->stats, so let us move it to
its caller (where it makes just as much sense) allowing us to make
bdrv_query_blk_stats() take a pointer to the BlockDeviceStats instead of
BlockStats.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-03-30 11:59:32 +02:00
Peter Xu
5eda622768 block/qapi: fix unbounded stack for dump_qdict
Using heap instead of stack for better safety.

Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-03-30 11:59:32 +02:00
Peter Xu
853ccfed8f block/qapi: make two printf() formats literal
Fix two places to use literal printf format when possible.

Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-03-30 11:59:32 +02:00
Kevin Wolf
72f41b6fbd block: Remove blk_set_bs()
The function is unused since commit f21d96d0 ('block: Use BdrvChild in
BlockBackend').

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2016-03-30 11:59:32 +02:00
Programmingkid
d0855f1235 block/raw-posix.c: Make physical devices usable in QEMU under Mac OS X host
Mac OS X can be picky when it comes to allowing the user
to use physical devices in QEMU. Most mounted volumes
appear to be off limits to QEMU. If an issue is detected,
a message is displayed showing the user how to unmount a
volume. Now QEMU uses both CD and DVD media.

Signed-off-by: John Arbuckle <programmingkidx@gmail.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-03-30 11:59:32 +02:00
Kevin Wolf
73ac451f34 block: Reject writethrough mode except at the root
Writethrough mode is going to become a BlockBackend feature rather than
a BDS one, so forbid it in places where we won't be able to support it
when the code finally matches the envisioned design.

We only allowed setting the cache mode of non-root nodes after the 2.5
release, so we're still free to make this change.

The target of block jobs is now always opened in a writeback mode
because it doesn't have a BlockBackend attached. This makes more sense
anyway because block jobs know when to flush. If the graph is modified
on job completion, the original cache mode moves to the new root, so
for the guest device writethough always stays enabled if it was
configured this way.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2016-03-30 11:59:32 +02:00
Kevin Wolf
b8816a4386 block: Make backing files always writeback
First of all, we're generally not writing to backing files, but when we
do, it's in the context of block jobs which know very well when to flush
the image.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2016-03-30 11:59:32 +02:00
Kevin Wolf
aaa436f998 block: Remove cache.writeback from blockdev-add
The WCE bit is a frontend property and should not be part of the backend
configuration. This is especially important because the same BDS can be
used by different users with different WCE requirements.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-03-30 11:59:32 +02:00
Kevin Wolf
7a827aaec8 block: Remove dirty bitmaps from bdrv_move_feature_fields()
This patch changes dirty bitmaps from following a BlockBackend in graph
changes to sticking with the node they were created at. For the full
discussion, read the following mailing list thread:

  [Qemu-block] block: Dirty bitmaps and COR in bdrv_move_feature_fields()
  https://lists.nongnu.org/archive/html/qemu-block/2016-02/msg00745.html

In summary, the justification for this change is:

* When moving the dirty bitmap to the top of the tree was introduced in
  bdrv_append() in commit a9fc4408, it didn't actually have any effect
  because there could never be a bitmap in use when bdrv_append() was
  called (op blockers would prevent this). This is still true today for
  all internal uses of dirty bitmaps.

* Support for user-defined dirty bitmaps was introduced in 2.4, but we
  discouraged users from using it because we didn't consider it ready
  yet.

  Moreover, in 2.5, the bdrv_swap() removal introduced a bug that left
  dangling pointers if a dirty bitmap was present (the anchors of the
  dirty bitmap were swapped, but the back link in the first element
  wasn't updated), so it didn't even work correctly.

* block-dirty-bitmap-add takes an arbitrary node name, even if no
  BlockBackend is attached. This suggests that it is a node level
  operation and not a BlockBackend one. Consequently, there is no reason
  for dirty bitmaps to stay with a BlockBackend that was attached to the
  node they were created for.

* It was suggested that block-dirty-bitmap-add could track the node if a
  node name was specified, and track the BlockBackend if the device name
  was specified. This would however be inconsistent with other QMP
  commands. Commands that accept both device and node names currently
  interpret the device name just as an alias for the current root node
  of that BlockBackend.

* Dirty bitmaps have a name that is only unique amongst the bitmaps in a
  specific node. Moving bitmaps could lead to name clashes. Automatic
  renaming would involve too much magic.

* Persistent bitmaps are stored in a specific node. Moving them around
  automatically might be at least surprising, but it would probably also
  become a real problem because that would have to happen atomically
  without the management tool knowing of the operation.

At the end of the day it seems to be very clear that it was a mistake to
include dirty bitmaps in bdrv_move_feature_fields(). The functionality
of moving bitmaps and/or attaching them to a BlockBackend instead will
probably be needed, but it should be done with a new explicit QMP
command or option.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2016-03-30 11:59:32 +02:00
Kevin Wolf
4c8449832c block: Remove copy-on-read from bdrv_move_feature_fields()
Ever since we first introduced bdrv_append() in commit 8802d1fd ('qapi:
Introduce blockdev-group-snapshot-sync command'), the copy-on-read flag
was moved to the new top layer when taking a snapshot. The only problem
is that it doesn't make a whole lot of sense.

The use case for manually enabled CoR is to avoid reading data twice
from a slow remote image, so we want to save it to a local overlay, say
an ISO image accessed via HTTP to a local qcow2 overlay. When taking a
snapshot, we end up with a backing chain like this:

    http <- local.qcow2 <- snap_overlay.qcow2

There is no point in doing CoR from local.qcow2 into snap_overlay.qcow2,
we just want to keep copying data from the remote source into
local.qcow2.

The other use case of CoR is in the context of streaming, which isn't
very interesting for bdrv_move_feature_fields() because op blockers
prevent this combination.

This patch makes the copy-on-read flag stay on the image for which it
was originally set and prevents it from being propagated to the new
overlay. It is no longer intended to move CoR to the BlockBackend level.
In order for this to make sense, we also need to keep the respective
image read-write.

As a side effect of these changes, creating a live snapshot image (as
opposed to using an existing externally created one) on top of a COR
block device works now. It used to fail because it tried to open its
backing file both read-only and with COR.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2016-03-30 11:59:32 +02:00
Kevin Wolf
63eaaae08c block: Remove bdrv_make_anon()
The call in hmp_drive_del() is dead code because blk_remove_bs() is
called a few lines above. The only other remaining user is
bdrv_delete(), which only abuses bdrv_make_anon() to remove it from the
named nodes list. This path inlines the list entry removal into
bdrv_delete() and removes bdrv_make_anon().

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
2016-03-30 11:59:32 +02:00
Yongbok Kim
f6d4dd8109 target-mips: add MAAR, MAARI register
The MAAR register is a read/write register included in Release 5
of the architecture that defines the accessibility attributes of
physical address regions. In particular, MAAR defines whether an
instruction fetch or data load can speculatively access a memory
region within the physical address bounds specified by MAAR.

As QEMU doesn't do speculative access, hence this patch only
provides ability to access the registers.

Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:14:00 +01:00
Yongbok Kim
c98d3d79ee target-mips: use CP0_CHECK for gen_m{f|t}hc0
Reuse CP0_CHECK macro for gen_m{f|t}hc0.

Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:14:00 +01:00
Leon Alrae
408294352a hw/mips/cps: enable ITU for multithreading processors
Make ITU available in the system if CPU supports multithreading
and is part of CPS.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:14:00 +01:00
Leon Alrae
0d74a222c2 target-mips: make ITC Configuration Tags accessible to the CPU
Add CP0.ErrCtl register with WST, SPR and ITC bits. In 34K and interAptiv
processors these bits are used to enable CACHE instruction access to
different arrays. When WST=0, SPR=0 and ITC=1 the CACHE instruction will
access ITC tag values.

Generally we do not model caches and we have been treating the CACHE
instruction as NOP. But since CACHE can operate on ITC Tags new
MIPS_HFLAG_ITC_CACHE hflag is introduced to generate the helper only when
CACHE is in the ITC Access mode.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:14:00 +01:00
Leon Alrae
40d48212f9 target-mips: check CP0 enabled for CACHE instruction also in R6
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:14:00 +01:00
Leon Alrae
25a611e3e4 hw/mips: implement ITC Storage - Bypass View
Bypass View does not cause issuing thread to block and does not affect
any of the cells state bit.

Read from a FIFO cell returns the value of the oldest entry.
Store to a FIFO cell changes the value of the newest entry.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:14:00 +01:00
Leon Alrae
40dc9dc339 hw/mips: implement ITC Storage - P/V Sync and Try Views
P/V Synchronized and Try Views can be used to access Semaphore cells.
Load returns current value and post-decrements the value in the cell
(until it reaches zero). Stores increment the value (until it saturates
at 0xFFFF).

P/V Synchronized View causes the issuing thread to block on read if value
is 0. P/V Try View does not block the thread, it returns 0 in this case.

Cell's Empty and Full bits are not modified.

Trap bit (i.e. Gating Storage exceptions) not implemented.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:14:00 +01:00
Leon Alrae
4051089d61 hw/mips: implement ITC Storage - Empty/Full Sync and Try Views
Empty/Full Synchronized and Try views can be used to access FIFO cells.
Store to the FIFO cell pushes the value into the queue, load pops the oldest
element from the queue. Cell's Full and Empty bits are automatically updated
to reflect new state of the cell.

Empty/Full Synchronized View causes the issuing thread to block when FIFO is
empty while thread is performing a read, or FIFO is full while thread is
performing a write.

Empty/Full Try View never blocks the thread. If cell is full then write is
ignored, if cell is empty then load returns 0.

Trap bit (i.e. Gating Storage exceptions) not implemented.
Store Conditional support for E/F Try View (i.e. indicate failure if FIFO
is full) not implemented.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:14:00 +01:00
Leon Alrae
5924c869c0 hw/mips: implement ITC Storage - Control View
Control view is used to access the ITC Storage Cell Tags. It never causes
the issuing thread to block.

Guest can empty the FIFO cell by setting Empty bit to 1.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:14:00 +01:00
Leon Alrae
34fa7e83e1 hw/mips: implement ITC Configuration Tags and Storage Cells
Implement ITC as a single object consisting of two memory regions:

1) tag_io: ITC Configuration Tags (i.e. ITCAddressMap{0,1} registers) which
are accessible by the CPU via CACHE instruction. Also adding
MemoryRegion *itc_tag to the CPUMIPSState so that CACHE instruction will
dispatch reads/writes directly.

2) storage_io: memory-mapped ITC Storage whose address space is configurable
(i.e. enabled/remapped/resized) by writing to ITCAddressMap{0,1} registers.

ITC Storage contains FIFO and Semaphore cells. Read-only FIFO bit in the
ITC cell tag indicates the type of the cell. If the ITC Storage contains
both types of cells then FIFOs are located before Semaphores.

Since issuing thread can get blocked on the access to a cell (in E/F
Synchronized and P/V Synchronized Views) each cell has a bitmap to track
which threads are currently blocked.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:14:00 +01:00
Leon Alrae
a9a9506171 target-mips: enable CM GCR in MIPS64R6-generic CPU
Indicate that in the MIPS64R6-generic CPU the memory-mapped
Global Configuration Register Space is implemented.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:13:59 +01:00
Leon Alrae
bff384a4fb hw/mips_malta: add CPS to Malta board
If the user specifies smp > 1 and the CPU with CM GCR support, then
create Coherent Processing System (which takes care of instantiating CPUs)
rather than CPUs directly and connect i8259 and cbus to the pins exposed by
CPS. However, there is no GIC yet, thus CPS exposes CPU's IRQ pins so use
the same pin numbers as before.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:13:59 +01:00
Leon Alrae
67a5496184 hw/mips_malta: move CPU creation to a separate function
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:13:59 +01:00
Leon Alrae
dc520a7dee hw/mips_malta: remove redundant irq and clock init
Global smp_cpus is never zero (even if user provides -smp 0), thus clocks
and irqs are always initialized for each created CPU in the loop at the
beginning of mips_malta_init.

These two lines cause a leak of already allocated timer and irqs for the
first CPU - remove them.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:13:59 +01:00
Leon Alrae
cc518af0b2 hw/mips_malta: remove CPUMIPSState from the write_bootloader()
Remove CPUMIPSState from the write_bootloader() argument list as it
is not used in the function.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:13:59 +01:00
Leon Alrae
2edd5261ff hw/mips/cps: create CPC block inside CPS
Create Cluster Power Controller and add a link to the CPC MemoryRegion
in GCR. Guest can enable / map CPC to any physical address by writing to
the memory-mapped GCR_CPC_BASE register.

Set vp-start-reset property to 1 to allow only first VP to run from reset.
Others are brought up by the guest via CPC memory-mapped registers.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:13:59 +01:00
Leon Alrae
1f93a6e4f3 hw/mips: add initial Cluster Power Controller support
Cluster Power Controller (CPC) is responsible for power management in
multiprocessing system. It provides registers to control the power and the
clock frequency of the individual elements in the system.

This patch implements only three registers that are used to control the
power state of each VP on a single core:
* VP Run is a write-only register used to set each VP to the run state
* VP Stop is a write-only register used to set each VP to the suspend state
* VP Running is a read-only register indicating the run state of each VP

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:13:59 +01:00
Leon Alrae
a9bd9b5a86 hw/mips/cps: create GCR block inside CPS
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:13:59 +01:00
Yongbok Kim
3994215db4 hw/mips: add initial Global Config Register support
Add initial GCR support to indicate number of VPs present in the system,
L2 bypass mode and revision number.

Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
[leon.alrae@imgtec.com:
 * removed GIC part,
 * changed commit message,
 * replaced %lx format spec. with PRIx64,
 * renamed mips_gcr.{c,h} to mips_cmgcr.{c,h},
 * replaced CONFIG_MIPS_GIC with CONFIG_MIPS_CPS]
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:13:59 +01:00
Yongbok Kim
c870e3f52c target-mips: add CMGCRBase register
Physical base address for the memory-mapped Coherency Manager Global
Configuration Register space.
The MIPS default location for the GCR_BASE address is 0x1FBF_8.
This register only exists if Config3 CMGCR is set to one.

Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
[leon.alrae@imgtec.com: move CMGCR enabling to a separate patch]
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:13:59 +01:00
Leon Alrae
8e7e8a5b7b hw/mips: implement generic MIPS Coherent Processing System container
Implement generic MIPS Coherent Processing System (CPS) which in this
commit just creates VPs, but it will serve as a container also for
other components like Global Configuration Registers and Cluster Power
Controller.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:13:58 +01:00
Sameeh Jubran
8e0f7dd251 Revert "e1000: fix hang of win2k12 shutdown with flood ping"
This reverts commit 9596ef7c7b.

This workaround in order to fix endless interrupts is no
longer needed because it was superseded by the previous patch
(e1000: Fixing interrupt pace).

Signed-off-by: Sameeh Jubran <sameeh@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
2016-03-30 08:57:42 +08:00
Sameeh Jubran
74004e8ce4 e1000: Fixing interrupts pace.
This patch introduces an upper bound for number of interrupts
per second. Without this bound an interrupt storm can occur as
it has been observed on Windows 10 when disabling the device.

According to the SPEC - Intel PCI/PCI-X Family of Gigabit
Ethernet Controllers Software Developer's Manual, section
13.4.18 - the Ethernet controller guarantees a maximum
observable interrupt rate of 7813 interrupts/sec. If there is
no upper bound this could lead to an interrupt storm by e1000
(when mit_delay < 500) causing interrupts to fire at a very high
pace.
Thus if mit_delay < 500 then the delay should be set to the
minimum delay possible which is 500. This can be calculated
easily as follows:

Interval = 10^9 / (7813 * 256) = 500.

Signed-off-by: Sameeh Jubran <sameeh@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
2016-03-30 08:57:36 +08:00
Zhang Chen
9fd3c5d556 tests/test-filter-redirector: Add unit test for filter-redirector
In this unit test,we will test the filter redirector function.

Case 1, tx traffic flow:

qemu side              | test side
                       |
+---------+            |  +-------+
| backend <---------------+ sock0 |
+----+----+            |  +-------+
     |                 |
+----v----+  +-------+ |
|  rd0    +->+chardev| |
+---------+  +---+---+ |
                 |     |
+---------+      |     |
|  rd1    <------+     |
+----+----+            |
     |                 |
+----v----+            |  +-------+
|  rd2    +--------------->sock1  |
+---------+            |  +-------+
                       +

a. we(sock0) inject packet to qemu socket backend
b. backend pass packet to filter redirector0(rd0)
c. rd0 redirect packet to out_dev(chardev) which is connected with
filter redirector1's(rd1) in_dev
d. rd1 read this packet from in_dev, and pass to next filter redirector2(rd2)
e. rd2 redirect packet to rd2's out_dev which is connected with an opened socketed(sock1)
f. we read packet from sock1 and compare to what we inject

Start qemu with:

"-netdev socket,id=qtest-bn0,fd=%d "
"-device rtl8139,netdev=qtest-bn0,id=qtest-e0 "
"-chardev socket,id=redirector0,path=%s,server,nowait "
"-chardev socket,id=redirector1,path=%s,server,nowait "
"-chardev socket,id=redirector2,path=%s,nowait "
"-object filter-redirector,id=qtest-f0,netdev=qtest-bn0,"
"queue=tx,outdev=redirector0 "
"-object filter-redirector,id=qtest-f1,netdev=qtest-bn0,"
"queue=tx,indev=redirector2 "
"-object filter-redirector,id=qtest-f2,netdev=qtest-bn0,"
"queue=tx,outdev=redirector1 "

--------------------------------------
Case 2, rx traffic flow
qemu side              | test side
                       |
+---------+            |  +-------+
| backend +---------------> sock1 |
+----^----+            |  +-------+
     |                 |
+----+----+  +-------+ |
|  rd0    +<-+chardev| |
+---------+  +---+---+ |
                 ^     |
+---------+      |     |
|  rd1    +------+     |
+----^----+            |
     |                 |
+----+----+            |  +-------+
|  rd2    <---------------+sock0  |
+---------+            |  +-------+

a. we(sock0) insert packet to filter redirector2(rd2)
b. rd2 pass packet to filter redirector1(rd1)
c. rd1 redirect packet to out_dev(chardev) which is connected with
   filter redirector0's(rd0) in_dev
d. rd0 read this packet from in_dev, and pass ti to qemu backend which is
   connected with an opened socketed(sock1)
e. we read packet from sock1 and compare to what we inject

Start qemu with:

"-netdev socket,id=qtest-bn0,fd=%d "
"-device rtl8139,netdev=qtest-bn0,id=qtest-e0 "
"-chardev socket,id=redirector0,path=%s,server,nowait "
"-chardev socket,id=redirector1,path=%s,server,nowait "
"-chardev socket,id=redirector2,path=%s,nowait "
"-object filter-redirector,id=qtest-f0,netdev=qtest-bn0,"
"queue=rx,outdev=redirector0 "
"-object filter-redirector,id=qtest-f1,netdev=qtest-bn0,"
"queue=rx,indev=redirector2 "
"-object filter-redirector,id=qtest-f2,netdev=qtest-bn0,"
"queue=rx,outdev=redirector1 "

Signed-off-by: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
2016-03-30 08:57:33 +08:00
Zhang Chen
d46f75b2e9 net/filter-mirror: implement filter-redirector
Filter-redirector is a netfilter plugin.
It gives qemu the ability to redirect net packet.
redirector can redirect filter's net packet to outdev.
and redirect indev's packet to filter.

                      filter
                        +
            redirector  |
               +--------------+
               |        |     |
  indev +-----------+   +---------->  outdev
               |    |         |
               +--------------+
                    |
                    v
                  filter

usage:

-netdev user,id=hn0
-chardev socket,id=s0,host=ip_primary,port=X,server,nowait
-chardev socket,id=s1,host=ip_primary,port=Y,server,nowait
-filter-redirector,id=r0,netdev=hn0,queue=tx/rx/all,indev=s0,outdev=s1

Signed-off-by: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
2016-03-30 08:57:28 +08:00
Zhang Chen
ba8940dd86 net/filter-mirror: Change filter_mirror_send interface
Change filter_mirror_send interface to make it easier
to used by other filter

Signed-off-by: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
2016-03-30 08:57:23 +08:00
Zhang Chen
06809ecf73 tests/test-filter-mirror:add filter-mirror unit test
In this unit test we will test the mirror function.

start qemu with:
      -netdev socket,id=qtest-bn0,fd=sockfd
      -device e1000,netdev=qtest-bn0,id=qtest-e0
      -chardev socket,id=mirror0,path=/tmp/filter-mirror-test.sock,server,nowait
      -object filter-mirror,id=qtest-f0,netdev=qtest-bn0,queue=tx,outdev=mirror0

We inject packet to netdev socket id = qtest-bn0,
filter-mirror will copy and mirror the packet to mirror0.
we read packet from mirror0 and then compare to what we injected.

Signed-off-by: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
2016-03-30 08:57:16 +08:00
Zhang Chen
f6d3afb51f net/filter-mirror:Add filter-mirror
Filter-mirror is a netfilter plugin.
It gives qemu the ability to mirror
packets to a chardev.

usage:

-netdev tap,id=hn0
-chardev socket,id=mirror0,host=ip_primary,port=X,server,nowait
-filter-mirror,id=m0,netdev=hn0,queue=tx/rx/all,outdev=mirror0

Signed-off-by: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Reviewed-by: Yang Hongyang <hongyang.yang@easystack.cn>
Reviewed-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
2016-03-30 08:54:29 +08:00
Peter Maydell
553934db66 -----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
 
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 Cd6d0SZlcOnq3M5LiOrA
 =1ekF
 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/cody/tags/block-pull-request' into staging

# gpg: Signature made Tue 29 Mar 2016 01:48:09 BST using RSA key ID C0DE3057
# gpg: Good signature from "Jeffrey Cody <jcody@redhat.com>"
# gpg:                 aka "Jeffrey Cody <jeff@codyprime.org>"
# gpg:                 aka "Jeffrey Cody <codyprime@gmail.com>"

* remotes/cody/tags/block-pull-request:
  qemu-iotests: add no-op streaming test
  qemu-iotests: fix test_stream_partial()
  block: never cancel a streaming job without running stream_complete()

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-29 19:54:49 +01:00
Peter Maydell
5b8e6b4cc2 slirp updates
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Merge remote-tracking branch 'remotes/thibault/tags/samuel-thibault' into staging

slirp updates

# gpg: Signature made Tue 29 Mar 2016 00:16:05 BST using RSA key ID FB6B2F1D
# gpg: Good signature from "Samuel Thibault <samuel.thibault@gnu.org>"
# gpg:                 aka "Samuel Thibault <sthibault@debian.org>"
# gpg:                 aka "Samuel Thibault <samuel.thibault@inria.fr>"
# gpg:                 aka "Samuel Thibault <samuel.thibault@labri.fr>"
# gpg:                 aka "Samuel Thibault <samuel.thibault@ens-lyon.org>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg:          It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 900C B024 B679 31D4 0F82  304B D017 8C76 7D06 9EE6
#      Subkey fingerprint: F632 74CD C630 0873 CB3D  29D9 E3E5 1CE8 FB6B 2F1D

* remotes/thibault/tags/samuel-thibault:
  Rework ipv6 options
  Use C99 flexible array instead of 1-byte trailing array
  Avoid embedding struct mbuf in other structures
  slirp: send icmp6 errors when UDP send failed
  slirp: Fix memory leak on small incoming ipv4 packet

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-29 18:25:27 +01:00
Peter Maydell
7cd592bc65 VFIO updates 2016-03-28
- Use 128bit math to avoid asserts with IOMMU regions (Bandan Das)
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Merge remote-tracking branch 'remotes/awilliam/tags/vfio-update-20160328.0' into staging

VFIO updates 2016-03-28

 - Use 128bit math to avoid asserts with IOMMU regions (Bandan Das)

# gpg: Signature made Mon 28 Mar 2016 23:16:52 BST using RSA key ID 3BB08B22
# gpg: Good signature from "Alex Williamson <alex.williamson@redhat.com>"
# gpg:                 aka "Alex Williamson <alex@shazbot.org>"
# gpg:                 aka "Alex Williamson <alwillia@redhat.com>"
# gpg:                 aka "Alex Williamson <alex.l.williamson@gmail.com>"

* remotes/awilliam/tags/vfio-update-20160328.0:
  vfio: convert to 128 bit arithmetic calculations when adding mem regions

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-29 17:39:41 +01:00
Samuel Thibault
d8eb386495 Rework ipv6 options
Rename the recently-added ip6-foo options into ipv6-foo options, to make
them coherent with other ipv6 options.

Also rework the documentation.

Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
2016-03-29 01:15:43 +02:00
Peter Maydell
1c3c8e9547 Use C99 flexible array instead of 1-byte trailing array
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
2016-03-29 01:15:02 +02:00
Bandan Das
55efcc537d vfio: convert to 128 bit arithmetic calculations when adding mem regions
vfio_listener_region_add for a iommu mr results in
an overflow assert since iommu memory region is initialized
with UINT64_MAX. Convert calculations to 128 bit arithmetic
for iommu memory regions and let int128_get64 assert for non iommu
regions if there's an overflow.

Suggested-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Bandan Das <bsd@redhat.com>
[missed (end - 1) on 2nd trace call, move llsize closer to use]
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2016-03-28 13:27:49 -06:00
Alberto Garcia
409d54986d qemu-iotests: add no-op streaming test
This patch tests that in a partial block-stream operation, no data is
ever copied from the base image.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-id: 5272a2aa57bc0b3f981f8b3e0c813e58a88c974b.1458566441.git.berto@igalia.com
Signed-off-by: Jeff Cody <jcody@redhat.com>
2016-03-28 13:56:44 -04:00