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2016-09-19KRT: Add krt_scope attributeOndrej Zajicek (work)
Add a new route attribute, krt_scope, to expose the Linux kernel route scope. Constants from /etc/iproute2/rt_scopes (prefixed by "ips_") are expected to be used with the attribute. Both import and export are supported. Also, the patch fixes device route export to the kernel, by setting link scope automatically.
2016-09-15Main: Improve BIRD help messagesPavel Tvrdik
2016-09-15rt-table: Fix kernel protocol export filter memory bugPavel Tvrdik
Kernel protocol calls rt_export_merged(), which used @rte_update_pool for temporary allocations, supposing it is called from other functions from rt-table.c that handles locking and flushing of the linpool. Therefore, linpool was not flushed properly and memory leaked. Add linpool argument to rt_export_merged() and use @krt_filter_lp when called from kernel protocol. Thanks to Justin Cattle and Alexander Frolkin for the bugreport. (Commit squashed and updated by Ondrej Zajicek)
2016-09-15KRT: Add kernel metric protocol optionOndrej Zajicek (work)
Kernel routes with different metrics do not clash with each other, therefore using dedicated metric value is a reliable way to avoid overwriting routes from other sources (e.g. kernel device routes). Although kernel route metric could already be set as a route attribute by filters, that is not consistent with the way how Linux kernel handles route metric - not just a route attribute, but a part of a route key.
2016-09-14KRT: Support for IPv6 ECMPOndrej Zajicek (work)
Linux represents IPv6 ECMP routes as a sequence of unipath routes with the same prefix. We have to translate between our representation (one route with multipath next hop) and the Linux representation in both directions. Proper learning of alien IPv6 ECMP routes still not supported. Thanks to Mikhail Sennikovskii for the original patch.
2016-08-31KRT: Fix trivial errorOndrej Zajicek (work)
2016-08-30KRT: Forbid path merging on BSDOndrej Zajicek (work)
We support ECMP routes only on Linux. Exported routes are checked in krt_capable(), but a route generated during path merging avoids this check.
2016-08-16whitespace fixesOndřej Surý
2016-07-20Netlink: Fix build with older headers missing IFA_FLAGSOndrej Zajicek (work)
2016-07-20Netlink: Ignore tentative addressesOndrej Zajicek (work)
Ignore tentative IPv6 addresses and wait until finish of Duplicate Address Detection (We got notification when an address is no longer tentative) to avoid problems when protocols try to use interfaces with tentative link-local addresses. Based on patch from Jan Moskyto Matejka
2016-07-11Log: Fix error handling of debug file openOndrej Zajicek (work)
Logging is not yet initialized, we have to use fprintf() here. Thanks to Pavel Tvrdik for noticing and debugging it.
2016-06-27cppcheck: fix va_end() functionsPavel Tvrdík
2016-05-30Unix IO: Tried to fix strange behavior after POLLHUP or POLLERR.Jan Moskyto Matejka
2016-05-12Prog Doc: Complete several missing parametersPavel Tvrdik
2016-05-10netlink: update struct msghdrStijn Tintel
The netlink code assumes an order for the members of struct msghdr. This breaks recvmsg and sendmsg with musl libc on mips64. Fix this by using designated initializers instead. Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
2016-05-03Initialize variable ifr in sk_setup()Pavel Tvrdik
==00:00:00:02.831 2468== Syscall param socketcall.setsockopt(optval) points to uninitialised byte(s) ==00:00:00:02.831 2468== at 0x513BDEA: setsockopt (in /usr/lib/libc-2.23.so) ==00:00:00:02.831 2468== by 0x45C7AF: sk_setup (io.c:1216) ==00:00:00:02.831 2468== by 0x45CDFF: sk_open (io.c:1417) ==00:00:00:02.831 2468== by 0x44B562: rip_open_socket (packets.c:740) ==00:00:00:02.831 2468== by 0x4481A7: rip_iface_locked (rip.c:616) ==00:00:00:02.831 2468== by 0x4133E4: olock_run_event (locks.c:177) ==00:00:00:02.831 2468== by 0x45A6DE: ev_run (event.c:85) ==00:00:00:02.831 2468== by 0x45A7AD: ev_run_list (event.c:142) ==00:00:00:02.831 2468== by 0x45E0FC: io_loop (io.c:2066) ==00:00:00:02.831 2468== by 0x463B56: main (main.c:845) ==00:00:00:02.831 2468== Address 0xffefffd24 is on thread 1's stack ==00:00:00:02.831 2468== in frame #1, created by sk_setup (io.c:1188) ==00:00:00:02.831 2468== Uninitialised value was created by a stack allocation ==00:00:00:02.831 2468== at 0x45C6BB: sk_setup (io.c:1188)
2016-04-29NEWS and version updateOndrej Zajicek (work)
2016-04-28Add the Babel routing protocol (RFC 6126)Ondrej Zajicek (work)
This patch implements the IPv6 subset of the Babel routing protocol. Based on the patch from Toke Hoiland-Jorgensen, with some heavy modifications and bugfixes. Thanks to Toke Hoiland-Jorgensen for the original patch.
2016-04-13BSD: Add the IPsec SA/SP database entries controlOndrej Zajicek (work)
Add code for manipulation with TCP-MD5 keys in the IPsec SA/SP database at FreeBSD systems. Now, BGP MD5 authentication (RFC 2385) keys are handled automatically on both Linux and FreeBSD. Based on patches from Pavel Tvrdik.
2016-04-07Main: Add local optionOndrej Zajicek (work)
Add option that changes default paths for config file and control socket to the current working directory.
2016-04-06IO: Avoid multiple event cycles in one loop cycle.Ondrej Zajicek (work)
Event cycle may took too much time and trigger next timer events, so avoid cycling between timer and event cycles inside the loop cycle.
2016-04-06IO: Replace RX priority heuristic with explicit markOndrej Zajicek (work)
In BIRD, RX has lower priority than TX with the exception of RX from control socket. The patch replaces heuristic based on socket type with explicit mark and uses it for both control socket and BGP session waiting to be established. This should avoid an issue when during heavy load, outgoing connection could connect (TX event), send open, but then failed to receive OPEN / establish in time, not sending notifications between and therefore got hold timer expired error from the neighbor immediately after it finally established the connection.
2016-04-06KRT: Fix route learn scan when route changedOndrej Zajicek (work)
When a kernel route changed, function krt_learn_scan() noticed that and replaced the route in internal kernel FIB, but after that, function krt_learn_prune() failed to propagate the new route to the nest, because it confused the new route with the (removed) old best route and decided that the best route did not changed. Wow, the original code (and the bug) is almost 17 years old.
2016-03-30IO/Poll: fix mistaken variable mergeJan Moskyto Matejka
The events variable is used in the short loop decision. The reasons are not much clear, keeping this to keep the former behaviour.
2016-03-18Unix: Substituted select -> poll also in congestion checkerJan Moskyto Matejka
It does strange things when even one fd larger than FD_SETSIZE is passed to select().
2016-03-15Poll: Prevent the improbable case of EAGAIN after POLLINJan Moskyto Matejka
2016-03-11Unix: Rework of select-loop to poll-loopJan Moskyto Matejka
This should lift the limit of FD_SETSIZE and allow more than 1024 fd's. FD_SETSIZE limit doesn't matter now when creating new sockets.
2016-02-11Unix: Fix bug in syslog name handlingOndrej Zajicek (work)
Pointer to current_log_name has to be changed even if the name is the same, because the old one will be invalid/freed after reconfiguration.
2015-11-24Netlink: attribute validation before parsingJan Moskyto Matejka
Wanted netlink attributes are defined in a table, specifying their size and neediness. Removing the long conditions that did the validation before. Also parsing IPv4 and IPv6 versions regardless on the IPV6 macro.
2015-11-23Nest: Fix bug in device protoOndrej Zajicek (work)
If an interface address notification is received during device protocol shutdown/restart, BIRD crashed. Thanks to Wei Huang for the bugreport.
2015-11-11Fix compiling with --enable-debug optionPavel Tvrdík
2015-11-11Netlink: Allow more than 256 routing tables.Jan Moskyto Matejka
Since 2.6.19, the netlink API defines RTA_TABLE routing attribute to allow 32-bit routing table IDs. Using this attribute to index routing tables at Linux, instead of 8-bit rtm_table field.
2015-11-09Conf: Fixes bug in symbol lookup during reconfigurationOndrej Zajicek (work)
Symbol lookup by cf_find_symbol() not only did the lookup but also added new void symbols allocated from cfg_mem linpool, which gets broken when lookups are done outside of config parsing, which may lead to crashes during reconfiguration. The patch separates lookup-only cf_find_symbol() and config-modifying cf_get_symbol(), while the later is called only during parsing. Also new_config and cfg_mem global variables are NULLed outside of parsing.
2015-11-03IO: Fix the previous bugfixOndrej Zajicek (work)
I should check it after making some trivial changes. The original patch from Alexander has it right.
2015-11-03IO: Handle fd values too big for select()Ondrej Zajicek (work)
If the number of sockets is too much for select(), we should at least handle it with proper error messages and reject new sockets instead of breaking the event loop. Thanks to Alexander V. Chernikov for the patch.
2015-10-17Minor changesOndrej Zajicek (work)
2015-07-28Netlink: Fixes uninitialized variableOndrej Zajicek
Thanks to Pavel Tvrdik for the bugfix
2015-06-08BGP multipath supportOndrej Zajicek
Kernel option 'merge paths' allows to merge routes exported to kernel protocol (currently BGP and static routes) to multipath routes.
2015-06-08KRT: Fixes some minor bugs in kernel protocolOndrej Zajicek
2015-06-08unsigned [int] -> uintPavel Tvrdík
2015-06-08unsgined char -> bytePavel Tvrdík
2015-05-13Fix in the last commitOndrej Zajicek
2015-05-12KRT: Add support for plenty of kernel route metricsOndrej Zajicek
Linux kernel route metrics (RTA_METRICS netlink route attribute) are represented and accessible as new route attributes: krt_mtu, krt_window, krt_rtt, krt_rttvar, krt_sstresh, krt_cwnd, krt_advmss, krt_reordering, krt_hoplimit, krt_initcwnd, krt_rto_min, krt_initrwnd, krt_quickack, krt_lock_mtu, krt_lock_window, krt_lock_rtt, krt_lock_rttvar, krt_lock_sstresh, krt_lock_cwnd, krt_lock_advmss, krt_lock_reordering, krt_lock_hoplimit, krt_lock_rto_min, krt_feature_ecn, krt_feature_allfrag
2015-04-25KRT: Fixes route reloadOndrej Zajicek
Did not really worked
2015-04-25KRT: Fixes learning of preferred kernel routes.Ondrej Zajicek
When a new route was imported from kernel and chosen as preferred, then the old best route was propagated as a withdraw to the kernel protocol. Under some circumstances such withdraw propagated to the BSD kernel could remove the new alien route and thus reverting the import.
2015-04-22KRT: Support for RTM_CHANGE on BSDOndrej Zajicek
2015-04-20NEWS and version updatev1.5.0Ondrej Zajicek
2015-04-19Fixes port range socket optionOndrej Zajicek
2015-04-12Minor fixesOndrej Zajicek
2015-03-31Understand IFF_MULTICAST flag on ifaces in LinuxOndrej Zajicek
Unfortunately, some interfaces support multicast but do not have this flag set, so we use it only as a positive hint. Thanks to Clint Armstrong for noticing the problem.