The bridge driver implementation of virNetworkUpdate() removes and
re-adds iptables rules any time a network has an <ip>, <forward>, or
<forward>/<interface> element updated. There are some types of
networks that have those elements and yet have no iptables rules
associated with them, and unfortunately the functions that remove/add
iptables rules don't check the type of network before attempting to
remove/add the rules, sometimes leading to an erroneous failure of the
entire update operation.
Under normal circumstances I would refactor the lower level functions
to be more robust, but to avoid code churn as much as possible, I've
just added extra checks directly to networkUpdate().
https://www.gnu.org/licenses/gpl-howto.html recommends that
the 'If not, see <url>.' phrase be a separate sentence.
* tests/securityselinuxhelper.c: Remove doubled line.
* tests/securityselinuxtest.c: Likewise.
* globally: s/; If/. If/
Two changes are introduced in this patch:
- The first change removes ATTRIBUTE_RETURN_CHECK from
virNetDevBandwidthClear, because it was called with ignore_value
always, anyway. The function is used even when it's not necessary
to call it, just for cleanup purposes.
- The second change is added ignoring of the command's exit status,
since it may report an error even when run just as "to be sure we
clean up" function. No libvirt errors are suppresed by this.
A user on IRC had accidentally killed all of his libvirt-started
dnsmasq instances (due to a buggy dnsmasq service script in Fedora
16), and had hoped that libvirtd would notice this on restart and
reload all the dnsmasq daemons (as it does with iptables
rules). Unfortunately this was not the case - as long as the network
object had a pid registered for dnsmasq and/or radvd, it assumed that
the processes were running.
This patch takes advantage of the new utility functions in
bridge_driver.c to do a "refresh" of all radvd and dnsmasq processes
started by libvirt each time libvirtd is restarted - this function
attempts to do a SIGHUP of each existing process, and if that fails,
it restarts the process, rebuilding all the associated config files
and commandline parameters in the process. This normally has no
effect, but will be useful in solving the occasional "odd situation"
without needing to take the drastic step of destroying/re-starting the
network.
Call the network_conf function that modifies the live/persistent/both
config, then refresh/restart dnsmasq/radvd if necessary, and finally
save the config in the proper place(s).
This patch also needed to uncomment a few utility functions that were
added inside #if 0 in the previous commit (to avoid compiler errors
due to unreferenced static functions).
This patch splits the starting of dnsmasq and radvd into multiple
files, and adds new networkRefreshXX() and networkRestartXX()
functions for each. These new functions are currently commented out
because they won't be used until the next commit, and the compile options
require all static functions to be used.
networkRefreshXX() - rewrites any file-based config for dnsmasq/radvd,
and sends SIGHUP to the process to make it reread its config. If the
program isn't already running, it's just started.
networkRestartXX() - kills the given program, waits for it to exit
(see the comments in the function networkKillDaemon()), then calls
networkStartXX().
This commit is here mostly as a checkpoint to verify no change in
functional behavior after refactoring networkStartXX() functions to
fit in with these new functions.
These new functions are highly inspired by those in domain_conf.c (but
not identical), and are intended to make it simpler to update the
various combinations of live/persistent network configs.
The network driver wasn't previously as careful about the separation
between the live "status" in network->def and the persistent "config"
in network->newDef (or sometimes in network->def). This series
attempts to remedy some of that, but probably doesn't go all the way
(enough to get these functions working and enable continued work on
virNetworkUpdate though).
bridge_driver.c and test_driver.c were updated in a few places to take
advantage of the new functions and/or account for changes in argument
lists.
This patch removed the "--filterwin2k" dnsmasq command line
parameter which was unnecessary for domain specification,
possibly blocked some usage, and was command line clutter.
Gene Czarcinski <gene@czarc.net>
libvirt's network config documents that a bridge's STP "forward delay"
(called "delay" in the XML) should be specified in seconds, but
virNetDevBridgeSetSTPDelay() assumes that it is given a delay in
milliseconds (although the comment at the top of the function
incorrectly says "seconds".
This fixes the comment, and converts the delay to milliseconds before
calling virNetDevBridgeSetSTPDelay().
dnsmasq is forwarding a number of queries upstream that should not
be done. There still remains an MX query for a plain name with no
domain specified that will be forwarded is dnsmasq has --domain=xxx
--local=/xxx/ specified. This does not happen with no domain name
and --local=// ... not a libvirt problem.
BTW, thanks again to Claudio Bley!
* configure.ac, spec file: firewalld defaults to enabled if dbus is
available, otherwise is disabled. If --with_firewalld is explicitly
requested and dbus is not available, configure will fail.
* bridge_driver: add dbus filters to get the FirewallD1.Reloaded
signal and DBus.NameOwnerChanged on org.fedoraproject.FirewallD1.
When these are encountered, reload all the iptables reuls of all
libvirt's virtual networks (similar to what happens when libvirtd is
restarted).
* iptables, ebtables: use firewall-cmd's direct passthrough interface
when available, otherwise use iptables and ebtables commands. This
decision is made once the first time libvirt calls
iptables/ebtables, and that decision is maintained for the life of
libvirtd.
* Note that the nwfilter part of this patch was separated out into
another patch by Stefan in V2, so that needs to be revised and
re-reviewed as well.
================
All the configure.ac and specfile changes are unchanged from Thomas'
V3.
V3 re-ran "firewall-cmd --state" every time a new rule was added,
which was extremely inefficient. V4 uses VIR_ONCE_GLOBAL_INIT to set
up a one-time initialization function.
The VIR_ONCE_GLOBAL_INIT(x) macro references a static function called
vir(Ip|Eb)OnceInit(), which will then be called the first time that
the static function vir(Ip|Eb)TablesInitialize() is called (that
function is defined for you by the macro). This is
thread-safe, so there is no chance of any race.
IMPORTANT NOTE: I've left the VIR_DEBUG messages in these two init
functions (one for iptables, on for ebtables) as VIR_WARN so that I
don't have to turn on all the other debug message just to see
these. Even if this patch doesn't need any other modification, those
messages need to be changed to VIR_DEBUG before pushing.
This one-time initialization works well. However, I've encountered
problems with testing:
1) Whenever I have enabled the firewalld service, *all* attempts to
call firewall-cmd from within libvirtd end with firewall-cmd hanging
internally somewhere. This is *not* the case if firewall-cmd returns
non-0 in response to "firewall-cmd --state" (i.e. *that* command runs
and returns to libvirt successfully.)
2) If I start libvirtd while firewalld is stopped, then start
firewalld later, this triggers libvirtd to reload its iptables rules,
however it also spits out a *ton* of complaints about deletion failing
(I suppose because firewalld has nuked all of libvirt's rules). I
guess we need to suppress those messages (which is a more annoying
problem to fix than you might think, but that's another story).
3) I noticed a few times during this long line of errors that
firewalld made a complaint about "Resource Temporarily
unavailable. Having libvirtd access iptables commands directly at the
same time as firewalld is doing so is apparently problematic.
4) In general, I'm concerned about the "set it once and never change
it" method - if firewalld is disabled at libvirtd startup, causing
libvirtd to always use iptables/ebtables directly, this won't cause
*terrible* problems, but if libvirtd decides to use firewall-cmd and
firewalld is later disabled, libvirtd will not be able to recover.
This patch updates the network driver to properly utilize the new
attributes/elements that are now in virNetworkDef
Signed-off-by: Shradha Shah <sshah@solarflare.com>
Signed-off-by: Laine Stump <laine@laine.org>
The network pool should be able to keep track of both network device
names and PCI addresses, and return the appropriate one in the
actualDevice when networkAllocateActualDevice is called.
Signed-off-by: Shradha Shah <sshah@solarflare.com>
This patch introduces the new forward mode='hostdev' along with
attribute managed. Includes updates to the network RNG and new xml
parser/formatter code.
Signed-off-by: Shradha Shah <sshah@solarflare.com>
Existing code that creates a list of forwardIfs from a single PF
was moved to the new utility function networkCreateInterfacePool.
No functional change.
Signed-off-by: Shradha Shah <sshah@solarflare.com>
Add the ability to support VLAN tags for Open vSwitch virtual port
types. To accomplish this, modify virNetDevOpenvswitchAddPort and
virNetDevTapCreateInBridgePort to take a virNetDevVlanPtr
argument. When adding the port to the OVS bridge, setup either a
single VLAN or a trunk port based on the configuration from the
virNetDevVlanPtr.
Signed-off-by: Kyle Mestery <kmestery@cisco.com>
The network driver now looks for the vlan element in network and
portgroup objects, and logs an error at network define time if a vlan
is requested for a network type that doesn't support it. (Currently
vlan configuration is only supported for openvswitch networks, and
networks used to do hostdev assignment of SR-IOV VFs.)
At runtime, the three potential sources of vlan information are
examined in this order: interface, chosen portgroup, network, and the
first that is non-empty is used. Another check for valid network type
is made at this time, since the interface may have requested a vlan (a
legal thing to have in the interface config, since it's not known
until runtime if the chosen network will actually support it).
Since we must also check for domains requesting vlans for unsupported
connection types even if they are type='network', and since
networkAllocateActualDevice() is being called in exactly the correct
places, and has all of the necessary information to check, I slightly
modified the logic of that function so that interfaces that aren't
type='network' don't just return immediately. Instead, they also
perform all the same validation for supported features. Because of
this, it's not necessary to make this identical check in the other
three places that would normally require it: 1) qemu domain startup,
2) qemu device hotplug, 3) lxc domain startup.
This can be seen as a first step in consolidating network-related
functionality into the network driver, rather than having copies of
the same code spread around in multiple places; this will make it
easier to split the network parts off into a separate daemon, as we've
discussed recently.
Just as each physical device used by a network has a connections
counter, now each network has a connections counter which is
incremented once for each guest interface that connects using this
network.
The count is output in the live network XML, like this:
<network connections='20'>
...
</network>
It is read-only, and for informational purposes only - it isn't used
internally anywhere by libvirt.
A later patch will be adding a counter that will be
incremented/decremented each time an guest interface starts/stops
using a particular network. For this to work, all types of networks
need to go through a common return sequence rather than returning
early. To setup for this, a new success: label is added (when
necessary), a new error: label is added which does any cleanup
necessary only for error returns and then does goto cleanup, and early
returns are changed to goto error if it's a failure, or goto success
if it's successful. This way the intent of all the gotos is
unambiguous, and a successful return path never encounters the
"error:" label.
I want to include this count in the xml output of networks, but
calling it "connections" in the XML sounds better than "usageCount", and it
would be better if the name in the XML matched the variable name.
In a few places, usageCount was being initialized to 0, but this is
unnecessary, because VIR_ALLOC_N zero-fills everything anyway.
One of the original ideas behind allowing a <virtualport> in an
interface definition as well as in the <network> definition *and*one
or more <portgroup>s within the network, was that guest-specific
parameteres (like instanceid and interfaceid) could be given in the
interface's virtualport, and more general things (portid, managerid,
etc) could be given in the network and/or portgroup, with all the bits
brought together at guest startup time and combined into a single
virtualport to be used by the guest. This was somehow overlooked in
the implementation, though - it simply picks the "most specific"
virtualport, and uses the entire thing, with no attempt to merge in
details from the others.
This patch uses virNetDevVPortProfileMerge3() to combine the three
possible virtualports into one, then uses
virNetDevVPortProfileCheck*() to verify that the resulting virtualport
type is appropriate for the type of network, and that all the required
attributes for that type are present.
An example of usage is this: assuming a <network> definitions on host
ABC of:
<network>
<name>testA</name>
...
<virtualport type='openvswitch'/>
...
<portgroup name='engineering'>
<virtualport>
<parameters profileid='eng'/>
</virtualport>
</portgroup>
<portgroup name='sales'>
<virtualport>
<parameters profileid='sales'/>
</virtualport>
</portgroup>
</network>
and the same <network> on host DEF of:
<network>
<name>testA</name>
...
<virtualport type='802.1Qbg'>
<parameters typeid="1193047" typeidversion="2"/>
</virtualport>
...
<portgroup name='engineering'>
<virtualport>
<parameters managerid="11"/>
</virtualport>
</portgroup>
<portgroup name='sales'>
<virtualport>
<parameters managerid="55"/>
</virtualport>
</portgroup>
</network>
and a guest <interface> definition of:
<interface type='network'>
<source network='testA' portgroup='sales'/>
<virtualport>
<parameters instanceid="09b11c53-8b5c-4eeb-8f00-d84eaa0aaa4f"
interfaceid="09b11c53-8b5c-4eeb-8f00-d84eaa0aaa4f"\>
</virtualport>
...
</interface>
If the guest was started on host ABC, the <virtualport> used would be:
<virtualport type='openvswitch'>
<parameters interfaceid='09b11c53-8b5c-4eeb-8f00-d84eaa0aaa4f'
profileid='sales'/>
</virtualport>
but if that guest was started on host DEF, the <virtualport> would be:
<virtualport type='802.1Qbg'>
<parameters instanceid="09b11c53-8b5c-4eeb-8f00-d84eaa0aaa4f"
typeid="1193047" typeidversion="2"
managerid="55"/>
</virtualport>
Additionally, if none of the involved <virtualport>s had a specified type
(this includes cases where no virtualport is given at all),
virtPortProfile is now used by 4 different types of network devices
(NETWORK, BRIDGE, DIRECT, and HOSTDEV), and it's getting cumbersome to
replicate so much code in 4 different places just because each type
has the virtPortProfile in a slightly different place. This patch puts
a single virtPortProfile in a common place (outside the type-specific
union) in both virDomainNetDef and virDomainActualNetDef, and adjusts
the parse and format code (and the few other places where it is used)
accordingly.
Note that when a <virtualport> element is found, the parse functions
verify that the interface is of a type that supports one, otherwise an
error is generated (CONFIG_UNSUPPORTED in the case of <interface>, and
INTERNAL in the case of <actual>, since the contents of <actual> are
always generated by libvirt itself).
Per the FSF address could be changed from time to time, and GNU
recommends the following now: (http://www.gnu.org/licenses/gpl-howto.html)
You should have received a copy of the GNU General Public License
along with Foobar. If not, see <http://www.gnu.org/licenses/>.
This patch removes the explicit FSF address, and uses above instead
(of course, with inserting 'Lesser' before 'General').
Except a bunch of files for security driver, all others are changed
automatically, the copyright for securify files are not complete,
that's why to do it manually:
src/security/security_selinux.h
src/security/security_driver.h
src/security/security_selinux.c
src/security/security_apparmor.h
src/security/security_apparmor.c
src/security/security_driver.c
Update the linux bridge driver to use virReportError instead
of the networkReportError custom macro
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Introduce new members in the virMacAddr 'class'
- virMacAddrSet: set virMacAddr from a virMacAddr
- virMacAddrSetRaw: setting virMacAddr from raw 6 byte MAC address buffer
- virMacAddrGetRaw: writing virMacAddr into raw 6 byte MAC address buffer
- virMacAddrCmp: comparing two virMacAddr
- virMacAddrCmpRaw: comparing a virMacAddr with a raw 6 byte MAC address buffer
then replace raw MAC addresses by replacing
- 'unsigned char *' with virMacAddrPtr
- 'unsigned char ... [VIR_MAC_BUFLEN]' with virMacAddr
and introduce usage of above functions where necessary.
commit 52d064f42d added
VIR_NETWORK_XML_INACTIVE in order to allow suppressing the
auto-generated list of VFs in network definitions, and a --inactive
flag to virsh net-dumpxml to take advantage of the flag. However, it
missed out on two opportunities:
1) Use INACTIVE to get the current config of the network as it
exists on disk, rather than the currently active config.
2) Add INACTIVE to the flags used for the virsh net-edit command, so
that it won't include the forward-pool interfaces that were
autogenerated, and so that a re-edit of the network prior to
restarting it will show any other edits made since the last restart
of the network. (prior to this patch, if you edited a network a 2nd
time without restarting, all of the previous edits would magically
disappear).
In order to fit with the new #define-based generic edit function in
virsh.c, a new function vshNetworkGetXMLDesc() was added. This
function first tries to call virNetworkGetXMLDesc with the INACTIVE
flag added, then retries without if the first attempt fails (in the
manner expected when the server doesn't support it).
Remove the uid param from virGetUserConfigDirectory,
virGetUserCacheDirectory, virGetUserRuntimeDirectory,
and virGetUserDirectory
These functions were universally called with the
results of getuid() or geteuid(). To make it practical
to port to Win32, remove the uid parameter and hardcode
geteuid()
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
As defined in:
http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html
This offers a number of advantages:
* Allows sharing a home directory between different machines, or
sessions (eg. using NFS)
* Cleanly separates cache, runtime (eg. sockets), or app data from
user settings
* Supports performing smart or selective migration of settings
between different OS versions
* Supports reseting settings without breaking things
* Makes it possible to clear cache data to make room when the disk
is filling up
* Allows us to write a robust and efficient backup solution
* Allows an admin flexibility to change where data and settings are stored
* Dramatically reduces the complexity and incoherence of the
system for administrators
This patch will allow OpenFlow controllers to identify which interface
belongs to a particular VM by using the Domain UUID.
ovs-vsctl get Interface vnet0 external_ids
{attached-mac="52:54:00:8C:55:2C", iface-id="83ce45d6-3639-096e-ab3c-21f66a05f7fa", iface-status=active, vm-id="142a90a7-0acc-ab92-511c-586f12da8851"}
V2 changes:
Replaced vm-uuid with vm-id. There was a discussion in Open vSwitch
mailinglist that we should stick with the same DB key postfixes for the
sake of consistency (e.g iface-id, vm-id ...).
With an additional new bool added to determine whether or not to
discourage the use of the supplied MAC address by the bridge itself,
virNetDevTapCreateInBridgePort had three booleans (well, 2 bools and
an int used as a bool) in the arg list, which made it increasingly
difficult to follow what was going on. This patch combines those three
into a single flags arg, which not only shortens the arg list, but
makes it more self-documenting.
When a tap device for a domain is created and attached to a bridge,
the first byte of the tap device MAC address is set to 0xFE, while the
rest is set to match the MAC address that will be presented to the
guest as its network device MAC address. Setting this high value in
the tap's MAC address discourages the bridge from using the tap
device's MAC address as the bridge's own MAC address (Linux bridges
always take on the lowest numbered MAC address of all attached devices
as their own).
In one case within libvirt, a tap device is created and attached to
the bridge with the intent that its MAC address be taken on by the
bridge as its own (this is used to assure that the bridge has a fixed
MAC address to prevent network outages created by the bridge MAC
address "flapping" as guests are started and stopped). In this case,
the first byte of the mac address is *not* altered to 0xFE.
In the current code, callers to virNetDevTapCreateInBridgePort each
make the MAC address modification themselves before calling, which
leads to code duplication, and also prevents lower level functions
from knowing the real MAC address being used by the guest. The problem
here is that openvswitch bridges must be informed about this MAC
address, or they will be unable to pass traffic to/from the guest.
This patch centralizes the location of the MAC address "0xFE fixup"
into virNetDevTapCreateInBridgePort(), meaning 1) callers of this
function no longer need the extra strange bit of code, and 2)
bitNetDevTapCreateBridgeInPort itself now is called with the guest's
unaltered MAC address, and can pass it on, unmodified, to
virNetDevOpenvswitchAddPort.
There is no other behavioral change created by this patch.
This patch allows libvirt to add interfaces to already
existing Open vSwitch bridges. The following syntax in
domain XML file can be used:
<interface type='bridge'>
<mac address='52:54:00:d0:3f:f2'/>
<source bridge='ovsbr'/>
<virtualport type='openvswitch'>
<parameters interfaceid='921a80cd-e6de-5a2e-db9c-ab27f15a6e1d'/>
</virtualport>
<address type='pci' domain='0x0000' bus='0x00'
slot='0x03' function='0x0'/>
</interface>
or if libvirt should auto-generate the interfaceid use
following syntax:
<interface type='bridge'>
<mac address='52:54:00:d0:3f:f2'/>
<source bridge='ovsbr'/>
<virtualport type='openvswitch'>
</virtualport>
<address type='pci' domain='0x0000' bus='0x00'
slot='0x03' function='0x0'/>
</interface>
It is also possible to pass an optional profileid. To do that
use following syntax:
<interface type='bridge'>
<source bridge='ovsbr'/>
<mac address='00:55:1a:65:a2:8d'/>
<virtualport type='openvswitch'>
<parameters interfaceid='921a80cd-e6de-5a2e-db9c-ab27f15a6e1d'
profileid='test-profile'/>
</virtualport>
</interface>
To create Open vSwitch bridge install Open vSwitch and
run the following command:
ovs-vsctl add-br ovsbr
I slightly botched commit be9fb5a - I converted '--arg=value' to
'--arg value', which has no semantic change, but did trip up the
testsuite.
* src/network/bridge_driver.c (networkBuildDnsmasqArgv): Restore
expected output.
Detected by valgrind. Leaks introduced in commit 973af236.
* src/network/bridge_driver.c: fix memory leaks on failure and successful path.
* How to reproduce?
% make -C tests check TESTS=networkxml2argvtest
% cd tests && valgrind -v --leak-check=full ./networkxml2argvtest
* Actual result:
==2226== 3 bytes in 1 blocks are definitely lost in loss record 1 of 24
==2226== at 0x4A05FDE: malloc (vg_replace_malloc.c:236)
==2226== by 0x39CF0FEDE7: __vasprintf_chk (in /lib64/libc-2.12.so)
==2226== by 0x41DFF7: virVasprintf (stdio2.h:199)
==2226== by 0x41E0B7: virAsprintf (util.c:1695)
==2226== by 0x41A2D9: networkBuildDhcpDaemonCommandLine (bridge_driver.c:545)
==2226== by 0x4145C8: testCompareXMLToArgvHelper (networkxml2argvtest.c:47)
==2226== by 0x4156A1: virtTestRun (testutils.c:141)
==2226== by 0x414332: mymain (networkxml2argvtest.c:123)
==2226== by 0x414D97: virtTestMain (testutils.c:696)
==2226== by 0x39CF01ECDC: (below main) (in /lib64/libc-2.12.so)
==2226==
==2226== 3 bytes in 1 blocks are definitely lost in loss record 2 of 24
==2226== at 0x4A05FDE: malloc (vg_replace_malloc.c:236)
==2226== by 0x39CF0FEDE7: __vasprintf_chk (in /lib64/libc-2.12.so)
==2226== by 0x41DFF7: virVasprintf (stdio2.h:199)
==2226== by 0x41E0B7: virAsprintf (util.c:1695)
==2226== by 0x41A307: networkBuildDhcpDaemonCommandLine (bridge_driver.c:551)
==2226== by 0x4145C8: testCompareXMLToArgvHelper (networkxml2argvtest.c:47)
==2226== by 0x4156A1: virtTestRun (testutils.c:141)
==2226== by 0x414332: mymain (networkxml2argvtest.c:123)
==2226== by 0x414D97: virtTestMain (testutils.c:696)
==2226== by 0x39CF01ECDC: (below main) (in /lib64/libc-2.12.so)
==2226==
==2226== 5 bytes in 1 blocks are definitely lost in loss record 4 of 24
==2226== at 0x4A05FDE: malloc (vg_replace_malloc.c:236)
==2226== by 0x39CF0FEDE7: __vasprintf_chk (in /lib64/libc-2.12.so)
==2226== by 0x41DFF7: virVasprintf (stdio2.h:199)
==2226== by 0x41E0B7: virAsprintf (util.c:1695)
==2226== by 0x41A2AB: networkBuildDhcpDaemonCommandLine (bridge_driver.c:539)
==2226== by 0x4145C8: testCompareXMLToArgvHelper (networkxml2argvtest.c:47)
==2226== by 0x4156A1: virtTestRun (testutils.c:141)
==2226== by 0x414332: mymain (networkxml2argvtest.c:123)
==2226== by 0x414D97: virtTestMain (testutils.c:696)
==2226== by 0x39CF01ECDC: (below main) (in /lib64/libc-2.12.so)
==2226==
==2226== LEAK SUMMARY:
==2226== definitely lost: 11 bytes in 3 blocks
Signed-off-by: Alex Jia <ajia@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
If a system has 64 or more VF's, it is quite tedious to mention each VF
in the interface pool.
The following modification will implicitly create an interface pool from
the SR-IOV PF.
Hi,
this is the fifth version of my SRV record for DNSMasq patch rebased
for the current codebase to the bridge driver and libvirt XML file to
include support for the SRV records in the DNS. The syntax is based on
DNSMasq man page and tests for both xml2xml and xml2argv were added as
well. There are some things written a better way in comparison with
version 4, mainly there's no hack in tests/networkxml2argvtest.c and
also the xPath context is changed to use a simpler query using the
virXPathInt() function relative to the current node.
Also, the patch is also fixing the networkxml2argv test to pass both
checks, i.e. both unit tests and also syntax check.
Please review,
Michal
Signed-off-by: Michal Novotny <minovotn@redhat.com>
This patch addresses https://bugzilla.redhat.com/show_bug.cgi?id=760442
When a network has any forward type other than route, nat or none, the
network configuration should be done completely external to libvirt -
libvirt only uses these types to allow configuring guests in a manner
that isn't tied to a specific host (all the host-specific information,
in particular interface names, port profile data, and bandwidth
configuration is in the network definition, and the guest
configuration only references it).
Due to a bug in the bridge network driver, libvirt was adding iptables
rules for networks with forward type='bridge' etc. any time libvirtd
was restarted while one of these networks was active.
This patch eliminates that error by only "reloading" iptables rules if
forward type is route, nat, or none.
Only one IPv4 DHCP definition is supported. Originally the code checked
for a multiple definition and returned an error, but the new domain
definition was already added to networks. This patch moves the check
before the newly defined network is added to active networks.
*src/network/bridge_driver.c: networkDefine(): - move multiple IPv4
addresses check before
definition is used.
The virDomainNetGetActualBridgeName and virDomainNetGetActualDirectDev
methods both return strings that point to data in the virDomainDefPtr
struct, and should therefore not be freed. The return values should
thus be 'const char *' not 'char *'.
* src/conf/domain_conf.c, src/conf/domain_conf.h: Mark const
* src/network/bridge_driver.c: Update to use a const char *
Move the ifaceMacvtapLinkDump and ifaceGetNthParent functions
into virnetdevvportprofile.c since they are specific to that
code. This avoids polluting the headers with the Linux specific
netlink data types
* src/util/interface.c, src/util/interface.h: Move
ifaceMacvtapLinkDump and ifaceGetNthParent functions and delete
remaining file
* src/util/virnetdevvportprofile.c: Add ifaceMacvtapLinkDump
and ifaceGetNthParent functions
* src/network/bridge_driver.c, src/nwfilter/nwfilter_gentech_driver.c,
src/nwfilter/nwfilter_learnipaddr.c, src/util/virnetdevmacvlan.c:
Remove include of interface.h
To match up with the existing virNetDevSetIPv4Address, rename
ifaceGetIPAddress to virNetDevGetIPv4Address
* util/interface.h, util/interface.c: Rename API
* network/bridge_driver.c: Update for API rename
In preparation for code re-organization, rename the Macvtap
management APIs to have the following patterns
virNetDevMacVLanXXXXX - macvlan/macvtap interface management
virNetDevVPortProfileXXXX - virtual port profile management
* src/util/macvtap.c, src/util/macvtap.h: Rename APIs
* src/conf/domain_conf.c, src/network/bridge_driver.c,
src/qemu/qemu_command.c, src/qemu/qemu_command.h,
src/qemu/qemu_driver.c, src/qemu/qemu_hotplug.c,
src/qemu/qemu_migration.c, src/qemu/qemu_process.c,
src/qemu/qemu_process.h: Update for renamed APIs
The src/util/network.c file is a dumping ground for many different
APIs. Split it up into 5 pieces, along functional lines
- src/util/virnetdevbandwidth.c: virNetDevBandwidth type & helper APIs
- src/util/virnetdevvportprofile.c: virNetDevVPortProfile type & helper APIs
- src/util/virsocketaddr.c: virSocketAddr and APIs
- src/conf/netdev_bandwidth_conf.c: XML parsing / formatting
for virNetDevBandwidth
- src/conf/netdev_vport_profile_conf.c: XML parsing / formatting
for virNetDevVPortProfile
* src/util/network.c, src/util/network.h: Split into 5 pieces
* src/conf/netdev_bandwidth_conf.c, src/conf/netdev_bandwidth_conf.h,
src/conf/netdev_vport_profile_conf.c, src/conf/netdev_vport_profile_conf.h,
src/util/virnetdevbandwidth.c, src/util/virnetdevbandwidth.h,
src/util/virnetdevvportprofile.c, src/util/virnetdevvportprofile.h,
src/util/virsocketaddr.c, src/util/virsocketaddr.h: New pieces
* daemon/libvirtd.h, daemon/remote.c, src/conf/domain_conf.c,
src/conf/domain_conf.h, src/conf/network_conf.c,
src/conf/network_conf.h, src/conf/nwfilter_conf.h,
src/esx/esx_util.h, src/network/bridge_driver.c,
src/qemu/qemu_conf.c, src/rpc/virnetsocket.c,
src/rpc/virnetsocket.h, src/util/dnsmasq.h, src/util/interface.h,
src/util/iptables.h, src/util/macvtap.c, src/util/macvtap.h,
src/util/virnetdev.h, src/util/virnetdevtap.c,
tools/virsh.c: Update include files
Rename the virVirtualPortProfileParams struct to be
virNetDevVPortProfile, and rename the APIs to match
this prefix.
* src/util/network.c, src/util/network.h: Rename port profile
APIs
* src/conf/domain_conf.c, src/conf/domain_conf.h,
src/conf/network_conf.c, src/conf/network_conf.h,
src/network/bridge_driver.c, src/qemu/qemu_hotplug.c,
src/util/macvtap.c, src/util/macvtap.h: Update for
renamed APIs/structs
steps to reproduce:
1. having a network xml file(named default.xml) like this one:
<network>
<name>default</name>
<uuid>c5322c4c-81d0-4985-a363-ad6389780d89</uuid>
<bridge name="virbr0" />
<forward/>
<ip address="192.168.122.1" netmask="255.255.255.0">
<dhcp>
<range start="192.168.122.2" end="192.168.122.254" />
</dhcp>
</ip>
</network>
in /etc/libvirt/qemu/networks/, and mark it as autostart:
$ ls -l /etc/libvirt/qemu/networks/autostart
total 0
lrwxrwxrwx 1 root root 14 Oct 12 14:02 default.xml -> ../default.xml
2. start libvirtd and the device virbr0 is not automatically up.
The reason is that the function virNetDevExists is now returns 1 if
the device exists, comparing to the former one returns 0 if the device
exists. But with only this fix will cause a segmentation fault(the same
steps as above) that is fixed by the second chunk of code.
