Just create a NMLinuxPlatform instance and unref it again.
This already connects to netlink and fetches all objects.
(cherry picked from commit 977626d942)
Switch platform caching implementation. Instead of caching libnl
objects, cache our own types.
Don't remove yet the now obsolete functions.
Advantage:
* Performance
- as we now cache our native NMPlatformObject instances, we no longer
have to convert libnl objects every time we access the platform
cache.
- for most cases, access is now O(1) because we can lookup the object
in a hash table. Note that ip4_address_get_all() still has to
create a copy of the result (O(n)), but as the caller is about to
use those elements, he cannot do better then O(n) anyway.
* We cache our own native types and have full control over them. We
cannot extend the libnl objects, which has many short-commings:
- _rtnl_addr_hack_lifetimes_rel_to_abs() to convert the timestamps
to absolute values (and back).
- hack_empty_master_iff_lower_up() would modify the internal flag,
but it looses the original value. That means, we can only hack
the state before putting a link into the cache, but we cannot revert
that change, when a slave in the cache changes state.
That was previously solved by always refetching the master when
a slave changed. Now we can re-evaluate the connected state
(DELAYED_ACTION_TYPE_MASTER_CONNECTED).
- we implement functions like equality, to-string as most suitable
for us. Before we needed hacks like nm_nl_object_diff(),
nm_nl_cache_search(), route_search_cache().
- we can extend our objects with exactly those properties we care,
and possibly additional properties that are not representable in
the libnl objects.
- we no longer cache RTM_F_CLONED routes and they get rejected early
on as we receive them.
- In the future, maybe it'd be interesting the make platform objects
immutable (and ref-counted) and expose them directly.
* Previous implementation did not order the refresh of objects but
called check_cache_items(). Now, those actions are delayed and
combined in an attempt to reduce the overall number of reloads.
Realize how expensive a check_cache_items() for addresses and routes
was: it would iterate all addresses/routes and call refresh_object().
The latter obtains a full dump of *all* objects again, and ignores
all but the needle.
Note that we probably still schedule some delayed actions that
are not needed.
Later we can optimize that further (related bug bgo #747985).
While some of these points could also have been implemented with
caching of libnl objects, that would have become hard to maintain.
https://bugzilla.gnome.org/show_bug.cgi?id=747981
(cherry picked from commit 470bcefa5f)
NMPObject is a simple "object" implemenation around NMPlatformObject.
They are ref-counted and have a class-pointer. Several basic functions
like equality, hash, to-string are implemented.
NMPCache is can be used to store the NMPObject. Objects are indexed
via their primary id, but there is also multi-lookup via NMCacheId
and NMMultiIndex.
Part of the implementation is inside "nm-linux-platform.c",
because it depends on utility functions from there.
(cherry picked from commit 53f98e7f9e)
A class to do efficient lookup for multiple values based on a key.
The values are opaque pointers (void*). These values can be
associated with keys. The keys are an opaque type NMMultiIndexId
with arbitrary hash/equal functions.
Think of the keys being a set of buckets. A value can be associated with multiple
keys, just like with a regular GHashTable (i.e. it can be in multiple buckets).
But one key can also be associated with multiple values (i.e. one bucket can contain
multiple values). Hence the name "multi".
One bucket can only either contain a value or not. It cannot contain the same
value multiple times.
This is implemented as a hash of hashes with the outer keys being
NMMultiIndexId. The inner hashes are the "buckets".
This class will be used as an efficient lookup index to find all values
that belong to a certain key (bucket). Later we will ask for example
"Which IP4-Addresses are associated with a certain ifindex" and
efficiently retrieve the cached result list.
(cherry picked from commit f99723eda5)
NMRefString is a simple, refcounted, immutable string. Increasing/decreasing
the refcount does not affect const-ness.
It can be used just like a regular 'const char *' pointer. The only
difference is that you need special alloc/free functions.
(cherry picked from commit 430658b17a)
Later we will need this flag to distinguish routes from kernel
that have source RTPROT_KERNEL.
This flag is still unused.
(cherry picked from commit 64d918293b)
Cache the scope as part of the NMPlatformIP4Route and
no longer read it from libnl object when needed. Later
there will be no more libnl objects around, and we need
to scope when deleting an IPv4 route.
(cherry picked from commit 619f660a3e)
nm_device_factory_manager_find_factory_for_link_type()
easily can see a link-type NM_LINK_TYPE_UNKNOWN because
there are many link types that NetworkManager cannot detect.
Just return NULL early.
Fixes: 71bde20c30
(cherry picked from commit eb2efaa228)
The supplicant interface's proxy may outlive the interface object
itself, so we must ensure that all signal handlers are disconnected.
Fixes a crash on suspend/resume.
Fixes: 59c8192b22
(cherry picked from commit e5e0fa566b)
Add nm_utils_setpgid() as a g_spawn*() child setup function for
calling setpgid(), and use it where appropriate rather than
reimplementing it every time.
(cherry picked from commit fb792af7cb)
There's no point in calling setpgid() on short-lived processes, so
remove the setpgid() calls when spawning dispatcher scripts, iptables,
iscsiadmin, and netconf.
(cherry picked from commit c22e3f327a)
nm-iface-helper originally used the same pthread_sigmask()-based
signal handling as NetworkManager, but was then switched to using
g_unix_signal_add(). But a little bit of unnecessary code remained.
(cherry picked from commit 3d068724da)
Replace the pthread_sigwait()-based signal handling with
g_unix_signal_add()-based handling, and get rid of all the
now-unnecessary calls to nm_unblock_posix_signals() when spawning
subprocesses.
As a bonus, this also fixes the "^C in gdb kills NM too" bug.
(cherry picked from commit c5b3e93792)
We already protected route-metrics that are configured as default-routes
in platform. For most cases, that list is identical to our internal list
of non-synced routes.
But if for some reason that is not the case, we must also protect the
metric of routs that we currently track as "non-synced".
(cherry picked from commit 6849050ad9)
Also accept a NULL connection in
nm_default_route_manager_ip4_connection_has_default_route() and
nm_default_route_manager_ip6_connection_has_default_route().
(cherry picked from commit 49227a07f3)
The previous syntax (s/S for synced, n/N for never-default) is confusing.
Indicate 'never-default' by '0', vs. '1'.
Indicated synced/non-synced as '+sync' and '-sync'.
(cherry picked from commit df9533d045)
The advantage of this is that if we later add another function
pointer we don't have to touch any existing calls which would
only pass NULL to that argument.
Using a variadic argument and partial initialization of an
auto variable gives us that flexibility.
(cherry picked from commit 035e31327b)
The keys of the hash are static strings. No need to make a copy of it.
If we ever need dynamics properties, we should intern those strings.
(cherry picked from commit 16f089ce64)
Instead of having a get_func() and out2in_func(), have only one
get_func() that accepts an argument of the output format.
This way, a conversion to parsable input format, doesn't have to go
first thourgh get_func() and mangle the pretty string in out2in_func().
This fixes conversions via nmc_property_out2in_cut_paren().
For example, nmc_property_802_1X_get_private_key_password_flags()
would return a localized string _("0 (none)"). There is no guarantee
that out2in_func() would find the expected output format after
localizing.
This also fixes nmc_property_out2in_routes() which expected
a format "dst =" (would be "ip =") and expects mandatory
'nh' and 'mt' arguments. In fact, the regex didn't match and
nmc_property_out2in_routes() always failed.
While at it, also combine the implementation of
nmc_property_ipv4_get_routes() and nmc_property_ipv6_get_routes().
(cherry picked from commit 8a14851f93)
