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networkd/libsystemd-network: collection of trivial patches v2
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With the previous description it wasn't clear that the
kernel default is being described.
Add link to kernel docs.
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Checks that a given address is not tentative nor deprecated.
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No need to expose these functions, but rather call them from address_{add,drop}.
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Don't allocate Address objects only to free them again when processing
rtnl events.
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We need to be able to look these things up quickly as we will be updating them
continuously and there can in principle be many of them.
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Add compare_func and hash_func for the Address object. The notion of
address equality is the same as in the kernel, and hashing preserves
preserves equality.
Two addresses are considered equal if:
- they have the same address family, and
- they are neither IPv4 nor IPv6 addresses, or
- the local addresses are identical, and
- they are IPv6 addresses, or
- they have the same prefixlength, and
- their peer prefixes are identical
This fixes a bug in the old equality check, which got the local address
and the peer prefix mixed up.
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Freeing links/addresses may trigger sending signals over the bus, so let's make sure
the bus stays around until our own objects have been freed.
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Rename new_dynamic() to simply _new() and reuse that from new_static().
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fixes Coverity #1317207
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networkd: add bridge properties
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networkd: add support to configure preferred source of static routes
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ForwardDelaySec: forward delay
HelloTimeSec: hello time
MaxAgeSec: maximum message age
for more information see
http://www.tldp.org/HOWTO/BRIDGE-STP-HOWTO/set-up-the-bridge.html
In kernel
br_dev_newlink: does not have the this functionality to set while
creation.
br_changelink: after creation we can change the parameters.
we need to first create then set it the parameters.
Introduce new callback post_create .This should
set the properties after the creation.
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Let's clean up our tree a bit, and reduce invocations of the
thread-unsafe strerror() by replacing it with printf()'s %m specifier.
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- Rely everywhere that we use abs() on the error code passed in anyway,
thus don't need to explicitly negate what we pass in
- Never attach synthetic error number information to log messages. Only
log about errors we *receive* with the error number we got there,
don't log any synthetic error, that don#t even propagate, but just eat
up.
- Be more careful with attaching exactly the error we get, instead of
errno or unrelated errors randomly.
- Fix one occasion where the error number and line number got swapped.
- Make sure we never tape over OOM issues, or inability to resolve
specifiers
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This also allows us to drop build.h from a ton of files, hence do so.
Since we touched the #includes of those files, let's order them properly
according to CODING_STYLE.
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The DHCP variable in the [Network] section of the network configuration
file moves the link to the configured state according to the following:
DHCP=yes Link is configured when either DHCPv4 or DHCPv6 succeed
DHCP=ipv4 Link is configured only when DHCPv4 succeeds
DHCP=ipv6 Link is configured only when DHCPv6 succeeds
DHCP=no Neither DHCPv4 or DHCPv6 is attempted
Reported by Martin Pitt.
Fixes https://github.com/systemd/systemd/issues/1368
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DHCPv6 suspend fixes
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Wait until DHCPv6 has acquired an address before announcing the link
to be configured. Log the DHCPv6 lease lost event.
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Whenever a Router Advertisement is received, dhcp6_configure() will be
called. A Router Advertisment can also instruct DHCPv6 to start acquiring
IPv6 addresses in manged mode, if it previously was handling only other
information. As an Router Advertisment is also received after the DHCPv6
client has resumed from a suspend, fix the function not to assume DHCPv6
is currently running, but instead try to restart it. Handle
sd_dhcp6_start() returning -EALREADY indicating that the DHCPv6 client was
already running.
Collect all client unrefs in one place to unclutter the error handling.
Fixes https://github.com/systemd/systemd/issues/963
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This causes the kernel to accept router advertisments even if
ip forwarding is enabled for this interface.
This fixes #1340.
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A variety of mostly unrelated fixes
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Let's underline the header line of the table shown by cgtop, how it is
customary for tables. In order to do this, let's introduce new ANSI
underline macros, and clean up the existing ones as side effect.
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Currently, sd-lldp.h exports "UPDATE_INFO".. and defines it to a magic
constant '10'. This is completely bogus, so fix it to follow our coding
standards:
- Prefix exported symbols by SD_LLDP_*
- Define a separate event-enum for event types
- Translate internal state to external event-types
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Prefix all exported constants with SD_IPV4LL_* to avoid namespacing
conflicts.
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Prefix all exported constants by SD_ICMP6_ND_* to avoid any namespacing
conflicts.
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Prefix all exported constants with SD_DHCP6_CLIENT_* to avoid any
namespacing conflicts.
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Prefix all constants with SD_DHCP_CLIENT_* to avoid namespacing
conflicts.
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This splits the Address Conflict Detection out of the Link Local
library so that we can reuse it for DHCP and static addresses in
the future.
Implements RFC5227.
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Firstly, no longer distinguish between STOP and INIT states.
Secondly, do not trigger STOP events when calls to sd_ipv4ll_*() fail. The
caller is the one who would receive the event and will already know that the
call to sd_ipv4ll_*() has failed, so it is redundant.
STOP events will now only be triggered by calling sd_ipv4ll_stop() explicitly
or by some internal error in the library triggered by receiving a packet or
an expiring timeout (i.e., any error that would otherwise not be reported
back to the consumer of the library).
Lastly, follow CODING_STYLE and always return NULL on unref. Protect from
objects being destroyed in callbacks accordingly.
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This patch support to configure the ipv6 acceprt ra option.
for more information see
http://www.tldp.org/HOWTO/Linux+IPv6-HOWTO/proc-sys-net-ipv6..html
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Patch via coccinelle.
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This replaces this:
free(p);
p = NULL;
by this:
p = mfree(p);
Change generated using coccinelle. Semantic patch is added to the
sources.
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Introduce a proper enum, and don't pass around string ids anymore. This
simplifies things quite a bit, and makes virtualization detection more
similar to architecture detection.
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Commit 0339cd770 changed libsystemd-network's error code for missing DHCP lease
data from ENOENT to ENODATA. Adjust networkd accordingly.
This fixes interfaces being stuck in "degraded/configuring" mode forever.
https://github.com/systemd/systemd/issues/1147
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tree-wide: do not shadow the global var timezone
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networkd: add support for tunnel encap limit
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The constraints we place on the pool is that it is a contiguous
sequence of addresses in the same subnet as the server address, not
including the subnet nor broadcast addresses, but possibly including
the server address itself. If the server address is included in the
pool it is (obviously) reserved and not handed out to clients.
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Don't restrict yourselves to 32 leases, simply manage the whole subnet by default.
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Merge sd_dhcp_server_set_address() and sd_dhcp_server_set_lease_pool() into
sd_dhcp_server_configure_pool() as the behavior of the two former depends
on the order they are called in. The flexibility is not needed, so let's
just do this in one call.
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The Tunnel Encapsulation Limit option specifies how many additional
levels of encapsulation are permitted to be prepended to the packet
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We may not set it before checking it for null.
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Otherwise we'll try to remove an invalid fd from epoll all the time.
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