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Super-important change, yeah!
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Let's make clear this always has the same size, since otherwise it's not useful
for reproducible runs, which this is really about however.
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A field "index" is not particularly precise and also might conflict with libc's
index() function definition. Also, pretty much everywhere else we call this
concept "ifindex", including in networkd, the primary user of these libraries.
Hence, let's fix this up and call this "ifindex" everywhere here too.
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Also adjust indentation in various places.
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Header files were organized in a way where the includer would add various
typedefs used by the includee before including it, resulting in a tangled
web of dependencies between files.
Replace this with the following logic:
networkd.h
/ \
networkd-link.h \
networkd-ipv4ll.h--\__\
networkd-fdb.h \
networkd-network.h netword-netdev-*.h
networkd-route.h \
networkd-netdev.h
If a pointer to a structure defined in a different header file is needed,
use a typedef line instead of including the whole header.
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This should be handled fine now by .dir-locals.el, so need to carry that
stuff in every file.
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Sort the includes accoding to the new coding style.
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Change the "out" parameter from uint8_t[8] to uint64_t. On architectures which
enforce pointer alignment this fixes crashes when we previously cast an
unaligned array to uint64_t*, and on others this should at least improve
performance as the compiler now aligns these properly.
This also simplifies the code in most cases by getting rid of typecasts. The
only place which we can't change is struct duid's en.id, as that is _packed_
and public API, so we can't enforce alignment of the "id" field and have to
use memcpy instead.
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This initializes the clients to try rebinding the preexisting
addresses before doing anything else.
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Different tools use different terms for the same concept, let's try
to stick with 'priority', as that is what the netlink API uses.
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These functions are almost entirely the same, so avoid duplication.
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We were considering a link configured whilst its IPv6 addresses were still
tentative.
Fixes issue #650.
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No need to expose these functions, but rather call them from address_{add,drop}.
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Rename new_dynamic() to simply _new() and reuse that from new_static().
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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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Prefix all exported constants with SD_IPV4LL_* 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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networkd: actually always use AddressFamilyBoolean as the bit mask it is
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This allows both IPv4 and IPv6 link-local addresses to be enabled or disabled. By default
we still enable IPv6LL and disable IPv4LL. The old config option is kept for backwards
compatibility, but removed from the documentation.
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The kernel always returns all addresses, rather than only for the given link, so let's only enumerate once.
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- Rename log_meta() → log_internal(), to follow naming scheme of most
other log functions that are usually invoked through macros, but never
directly.
- Rename log_info_object() to log_object_info(), simply because the
object should be before any other parameters, to follow OO-style
programming style.
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log_error_errno() as log calls that take error numbers
This change has two benefits:
- The format string %m will now resolve to the specified error (or to
errno if the specified error is 0. This allows getting rid of a ton of
strerror() invocations, a function that is not thread-safe.
- The specified error can be passed to the journal in the ERRNO= field.
Now of course, we just need somebody to convert all cases of this:
log_error("Something happened: %s", strerror(-r));
into thus:
log_error_errno(-r, "Something happened: %m");
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