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2015-11-11networkd: ndisc - handle router advertisement in userspaceTom Gundersen
Router Discovery is a core part of IPv6, which by default is handled by the kernel. However, the kernel implementation is meant as a fall-back, and to fully support the protocol a userspace implementation is desired. The protocol essentially listens for Router Advertisement packets from routers on the local link and use these to configure the client automatically. The four main pieces of information are: what kind (if any) of DHCPv6 configuration should be performed; a default gateway; the prefixes that should be considered to be on the local link; and the prefixes with which we can preform SLAAC in order to pick a global IPv6 address. A lot of additional information is also available, which we do not yet fully support, but which will eventually allow us to avoid the need for DHCPv6 in the common case. Short-term, the reason for wanting this is in userspace was the desire to fully track all the addresses on links we manage, and that is not possible for addresses managed by the kernel (as the kernel does not expose to us the fact that it manages these addresses). Moreover, we would like to support stable privacy addresses, which will soon be mandated and the legacy MAC-based global addresses deprecated, to do this well we need to handle the generation in userspace. Lastly, more long-term we wish to support more RA options than what the kernel exposes.
2015-11-11sd-ndisc: introduce separate callbacksTom Gundersen
As the data passed is very different, we introduce four different callbacks: - Generic - router discovery timed out or state machine stopped - Router - router and link configuration received - Prefix onlink - configuration for an onlink prefix received - Prefix autonomous - configuration for to configure a SLAAC address for a prefix received
2015-11-11sd-ndisc: notify user on STOPTom Gundersen
Also, stop the state machine when we get into a broken state, rather than just notify the user.
2015-11-11sd-dhcp6-client: add is_running() methodTom Gundersen
2015-11-10Merge pull request #1735 from thom311/masterTom Gundersen
lldp: avoid compiler warnings in lldp_tfl_package_read* functions
2015-11-09Merge pull request #1820 from michich/errno-v2Daniel Mack
[v2] treewide: treatment of errno and other cleanups
2015-11-06doc: correct orthography, word forms and missing/extraneous wordsJan Engelhardt
2015-11-05libsystemd-network: inet_pton does not set errno on parsing errorMichal Schmidt
it would set errno only for an invalid address family. Also fix a copy&paste error in one error string.
2015-11-03util-lib: move character class definitions to string-util.hLennart Poettering
2015-11-03sd-pppoe: dropTom Gundersen
It is really unclear if we want to / have the resources to support this fully, so drop it for now. It can easily be brought back if a killer usecase emerges. Note that this code was never hooked up, so this does not remove any features.
2015-10-31lldp: avoid compiler warnings in lldp_tfl_package_read* functionsThomas Haller
gcc 5.1.1 wrongly warns about uninitialized variable @r2 when compiling with "-Og". Refactor the code to avoid the warnings. Fixes: 564cabd46c7c1532ad4d562bf8332eaed49ac201
2015-10-30sd-dhcp6-client: fix assert in options parsingTom Gundersen
2015-10-27util-lib: split out allocation calls into alloc-util.[ch]Lennart Poettering
2015-10-27util-lib: move string table stuff into its own string-table.[ch]Lennart Poettering
2015-10-27util-lib: move more file I/O related calls into fileio.[ch]Lennart Poettering
2015-10-27util-lib: split out hex/dec/oct encoding/decoding into its own fileLennart Poettering
2015-10-27util-lib: split string parsing related calls from util.[ch] into parse-util.[ch]Lennart Poettering
2015-10-25util-lib: split out fd-related operations into fd-util.[ch]Lennart Poettering
There are more than enough to deserve their own .c file, hence move them over.
2015-10-24sd-*.h: clean up exported (or to-be-exported) header filesLennart Poettering
Exported header files should not include internal headers. Fix that. Exported header files should not use the bool type. So far we opted to stick to C89 for exported headers, and hence use "int" for bools in them. Continue to do so. Exported header files should have #include lines for everything they use including inttypes.h and sys/types.h, so that they may be included in any order. Exported header files should have C++ guards, hence add them. Exported header files should not use gcc extensions like #pragma once, get rid of it.
2015-10-24util-lib: split our string related calls from util.[ch] into its own file ↵Lennart Poettering
string-util.[ch] There are more than enough calls doing string manipulations to deserve its own files, hence do something about it. This patch also sorts the #include blocks of all files that needed to be updated, according to the sorting suggestions from CODING_STYLE. Since pretty much every file needs our string manipulation functions this effectively means that most files have sorted #include blocks now. Also touches a few unrelated include files.
2015-10-22sd-ndisc: reduce callbacksTom Gundersen
Only callback on error when the statemachine is in a truly broken state. This is now only the case when we fail to rearm a timer.
2015-10-22sd-ndisc: drop sd_ndisc_get_prefixlen()Tom Gundersen
This is unused, and in the future we will pass prefixes and prefixlengths directly to the callbacks when needed rather than having to search for them.
2015-10-22sd-ndisc: drop sd_ndisc_prefix_match()Tom Gundersen
This is no longer used.
2015-10-22sd-ndisc: don't trigger timeout on prefix expiryTom Gundersen
The caller of the library is no longer notified, so triggering a timer just to clean up is not necessary. Instead check for and clean up invalid prefixes lazily.
2015-10-22sd-ndisc: remove a prefix from the ndisc object when freeing itTom Gundersen
This follows the coding style, and allows some simplification to the rest of the code.
2015-10-22sd-ndisc: don't inform the caller of expired prefixesTom Gundersen
The caller should push any lifetime information into the kernel and let the kernel handle prefix expiration.
2015-10-22sd-ndisc: clean up state enumTom Gundersen
There is no need to assign valuse to the states. Also add _INVALID and _MAX, even though these are not used, it keeps it consistent.
2015-10-22sd-ndisc: rename icmp6 to ndisc throughout the codeTom Gundersen
2015-10-22libsystemd-network: split icm6-util.[ch] out of dhcp6 codeTom Gundersen
2015-10-22sd-ndisc: rename API from sd-icmp6-ndTom Gundersen
2015-10-22sd-icmp6-nd: rename files to sd-ndiscTom Gundersen
The actual code rename will follow. The reason for the change of name is to make it simpler and more uniform with how we name other libraries (we don't include the underlying protocol). The new name also matches the naming in the kernel (which is particularly relevent here as we expect to let the kernel do some parts of the protocol and we do others).
2015-10-11sd-ipv4ll: allow initial address to be set explicitlyTom Gundersen
This is useful in case the daemon is restarted and the state of the IPv4LL client should be serialized/deserialized.
2015-10-11libsystemd-network: limit accuracy of timestamps in loggingTom Gundersen
We don't care about timestamps down to the last usec, round to the closest sec as that will be plenty for debugging purposes.
2015-10-08lldp: rename publicly visible structureBeniamino Galvani
Rename struct 'tlv_packet' to 'sd_lldp_packet' and struct 'tlv_section' to 'sd_lldp_section' since the former is referenced in public header sd-lldp.h. Signed-off-by: Beniamino Galvani <bgalvani@redhat.com>
2015-10-06siphash24: unify APITom Gundersen
Make the API of the new helpers more similar to the old wrapper. In particular we now return the hash as a byte string to avoid any endianness problems.
2015-10-06Merge pull request #1465 from teg/siphash24Lennart Poettering
hashmap/siphash24: refactor hash functions
2015-10-05hashmap: hash_funcs - make inputs unambiguousTom Gundersen
Make sure all variable-length inputs are properly terminated or that their length is encoded in some way. This avoids ambiguity of adjacent inputs. E.g., in case of a hash function taking two strings, compressing "ab" followed by "c" is now distinct from "a" followed by "bc".
2015-10-05hashmap: refactor hash_funcTom Gundersen
All our hash functions are based on siphash24(), factor out siphash_init() and siphash24_finalize() and pass the siphash state to the hash functions rather than the hash key. This simplifies the hash functions, and in particular makes composition simpler as calling siphash24_compress() repeatedly on separate chunks of input has the same effect as first concatenating the input and then calling siphash23_compress() on the result.
2015-10-02lldp: add reception testsBeniamino Galvani
Add some tests to simulate the reception of LLDP frames and to verify the correctness of the data in the MIB.
2015-10-02lldp: fix parsing of TLV lengthBeniamino Galvani
tlv_packet_read_bytes() and tlv_packet_read_string() returned the wrong length when called after other functions which modify the offset in the container. In other words, if the TLV data length is X and we do a tlv_packet_read_u8(), a subsequent tlv_packet_read_bytes() should return a length of (X - 1).
2015-10-02lldp: move lldp_receive_packet() to lldp-internal.cBeniamino Galvani
In order to implement tests for the LLDP state machine, we need to mock lldp_network_bind_raw_socket(). Move the other function lldp_receive_packet() to another file so that we can replace the first function with a custom one and keep the second one.
2015-10-02lldp: check return value of lldp_tlv_packet_exit_container()Beniamino Galvani
2015-10-02lldp: add support for organizationally specific TLVsBeniamino Galvani
LLDP TLVs of type 127 are used to carry organizationally specific information and include additional fields to specify the OUI and subtype. Add support for parsing such fields and functions to access the most common IEEE 802.1 specific TLVs.
2015-10-02lldp: factor out common code in lldp-tlv.cBeniamino Galvani
2015-10-02lldp: add sd_lldp_tlv_packet_get_destination_type()Beniamino Galvani
It can be useful to know the destination address of a LLDP frame because it determines the scope of propagation of the frame and thus this information be used to know whether the neighbor is connected to the same physical link. See clause 7.1 of IEEE Std 802.1AB-2009.
2015-10-02lldp: add public function to export LLDP TLV packetsBeniamino Galvani
Add a public function to get a list of current LLDP neighbours' TLV packets. The function populates an array of pointers to the opaque type sd_lldp_packet and returns the number of elements found. Callers must take care of freeing the array and decreasing the refcount of elements when done.
2015-10-02lldp: move TLV related functions to lldp-tlv.cBeniamino Galvani
Move some public functions from lldp-internal.c to lldp-tlv.c, as now they are not internal functions anymore.
2015-10-02lldp: export opaque TLV type and accessor functionsBeniamino Galvani
Export struct tlv_packet as a public opaque sd_lldp_packet type and make its accessor functions public.
2015-10-02lldp: change order of arguments of lldp_read_*() functionsBeniamino Galvani
These functions are going to be exported, swap the 'data' and 'length' arguments so that their signature is consistent with the rest of the code.
2015-10-02lldp: add reference counter to struct tlv_packetBeniamino Galvani
Add a reference counter to the tlv_packet structure so that it can be shared between multiple users and properly free'd when no longer in use.