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Without this, the underlying device would get freed (and hence
fail).
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This patch adds peer address support for
networkd . In the [Address] a new configurable
param is Peer.
[Match]
Name=ipip-tun
[Address]
Address=10.0.0.1/32
Peer=10.0.0.2/32
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When doing a NEWADDR, the reply we get back is the NEWADDR itself, rather
than just an empty ack (unlike how NEWLINK works). For this reason, the
process that did the NEWADDR does not get the broadcast message.
We were only listening for broadcast messages, and hence not tracking the
addresses we added ourselves. This went unnoticed as the kernel will usually
send NEWADDR messages from time to time anyway, so things would mostly work,
but in the worst case we would not notice that a routable address was available
and consider ourselves offline.
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Susant says:
> ip tuntap turns this off by default.
Let's follow ip(8) here as that should be the least surprising.
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The group argument is a union. We need to
pass the correct type
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It had a bug in the typing, fix that and also make it save the address family so we
can print proper error messages.
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This patch introduces TUN/TAP device creation support
to networkd.
Example conf to create a tap device:
file: tap.netdev
------------------
[NetDev]
Name=tap-test
Kind=tap
[Tap]
OneQueue=true
MultiQueue=true
PacketInfo=true
User=sus
Group=sus
------------------
Test:
1. output of ip link
tap-test: tap pi one_queue UNKNOWN_FLAGS:900 user 1000 group 1000
id:
uid=1000(sus) gid=10(wheel) groups=10(wheel),1000(sus)
context=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023
Modifications:
Added:
1. file networkd-tuntap.c
3. netdev kind NETDEV_KIND_TUN and NETDEV_KIND_TAP
2. Tun and Tap Sections and config params to parse
conf and gperf conf parameters
[tomegun: tweak the 'kind' checking for received ifindex]
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We should never call them again, so make sure they are cleaned up correctly.
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Keeping the refcounting next to the sd_bus_call_async() makes it easier to check.
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Send hostname (option 12) in DISCOVER and REQUEST messages so the
DHCP server could use it to register with dynamic DNS and such.
To opt-out of this behaviour set SendHostname to false in [DHCP]
section of .network file
[tomegun: rebased, made sure a failing set_hostname is a noop and moved
config from DHCPv4 to DHCP]
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We were doing this correctly for when the callback takes the Link object, but
must also do it for the cases it takes the NetDev object.
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This allows restarts to work gracefully.
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The Link statemachine relies on this, as it would otherwise wait forever. Hook up the tunnels in the
same way as the other NetDev's.
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Currently DHCP/IPv4LL only works on ethernet devices, but no reason not to otherwise
manage them.
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use cleanup macro for Address na
[tomegun: dropped unneccessary braces]
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_free() should always succeed, even if object is not fully allocated.
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We failed to take a ref when waiting for udev synchronization. Fix that and also
make unreffing in callbacks simpler throughout by using _cleanup_ macros.
Fixes <https://bugs.freedesktop.org/show_bug.cgi?id=80556>.
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The logic otherwise is that we leave anything preconfigured alone, but in the case of DHCP
we actually need to update it whenever the lease is renewed.
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Don't wait for IPv4LL nor DHCP to finish before setting statically configured addresses.
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This adds support for DHCP options 33 and 121: Static Route and
Classless Static Route. To enable this feature, set UseRoutes=true
in .network file. Returned routes are added to the routing table.
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If there are v4 or v6 specific options we can keep those in separate sections,
but for the common options, we will use only one.
Moreovere only use DHCP=[yes/both|no/none|v4|v6] to enable or disable the clients.
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Note that /proc/sys/net/ipv4/ip_dynaddr needs to be non-zero.
[tomegun: hook up DHCP renew events to increase the lifetime when necessary]
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When a link fails or looses carrier, always stop ongoing router
solicitation and any DHCPv6 client that may be running.
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We used to check if e.g. IFLA_BOND_MAX is defined and provide fallback
values in missing.h is it wasn't. But over time, various kernel
versions added IFLA_* defines, so checking for IFLA_BOND_MAX is not
enough if the kernel is new enough to have some of them but too old to
have all. In case we detect that the latest known enum value is
missing, #define most of them.
https://bugs.freedesktop.org/show_bug.cgi?id=80095
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Avoid freeing the netdev structure in the cleanup macro.
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The link was unintentionally being unreferenced instead of referenced for the
MTU setup.
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Enable DHCPv6 support by creating a DHCPv6 boolean in the Network
section. Add necessary DHCPv6 structures and initial function calls.
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address on the interface
This way we can make use of the addresses of the IP pool.
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When an address is configured to be all zeroes, networkd will now
automatically find a locally unused network of the right size from a
list of pre-configured pools. Currently those pools are 10.0.0.0/8,
172.16.0.0/12, 192.168.0.0/16 and fc00::/7, i.e. the network ranges for
private networks. They are compiled in, but should be configurable
eventually.
This allows applying the same configuration to a large number of
interfaces with each time a different IP range block, and management of
these IP ranges is fully automatic.
When allocating an address range from the pool it is made sure the range
is not used otherwise.
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of it everywhere
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We were comparing against our own internal enum rather than the kernel exposed one.
Found by Thomas Ritter.
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Unref tunnel while shutting down
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This patch enables netwokd to create vxlan
Changes:
Added:
1. File networkd networkd-vxlan.c
2. to netdev
bool learning
struct in_addr group
uint64_t vxlanid;
3. VXLAN subsection and config
parameters
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Rename the netdev variables. Remove tunnel_
so that it can be reused .
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