Commit graph

190 commits

Author SHA1 Message Date
Ondrej Zajicek (work)
318acb0f6c BSD: Use MSG_DONTROUTE for unicast packets on FreeBSD
BSD systems cannot use SO_DONTROUTE, because it does not work properly
with multicast packets (perhaps it tries to find iface based on multicast
group address). But we can use MSG_DONTROUTE sendmsg() flag for unicast
packets. Works on FreeBSD, is ignored on OpenBSD and is broken on NetBSD
(i guess due to integrated routing table and ARP table).
2018-07-28 16:54:06 +02:00
Ondrej Zajicek (work)
eaf63d314d Better initialization of random generator
Use full time precision to initialize random generator. The old
code was prone to initialize it to the same values in specific
circumstances (boot without RTC, multiple VMs starting at once).
2018-05-03 17:07:39 +02:00
Ondrej Zajicek (work)
75d98b6013 Merge branch 'master' into int-new 2018-01-23 18:29:32 +01:00
Ondrej Zajicek (work)
d6cf996151 IO: Fix socket priority
On Linux, setting the ToS will also set the priority and the range of
accepted values is quite limited (masked by 0x1e). Therefore, 0xc0 is
translated to a priority of 0, not something we want, overriding the
"7" priority which was set previously explicitely. To avoid that, just
move setting priority later in the code.

Thanks to Vincent Bernat for the patch.
2018-01-23 17:05:45 +01:00
Ondrej Zajicek (work)
46434a3cad Merge commit '7b2c5f3d2826e3175bf31b1c36056c9efc587a2b' into int-new 2017-12-07 18:35:46 +01:00
Ondrej Zajicek (work)
a6f79ca57f Timers: Revert temporary names and remove old timer.h 2017-12-07 13:54:59 +01:00
Ondrej Zajicek (work)
574b232427 Timers: Fix TBF and some last remains 2017-12-07 13:53:42 +01:00
Ondrej Zajicek (work)
6b5cd7c05f Sysdep: Remove old timer code 2017-12-07 13:53:42 +01:00
Ondrej Zajicek (work)
ee528fbd5d Timers: Add typecast to unit-converting macros 2017-12-07 13:53:42 +01:00
Ondrej Zajicek (work)
f047271cb9 Timers: Parse and format functions for microsecond times
Date/time output (e.g. in logs, show commands) can use %f to specify
subsecond time. By default, millisecond precision is used in output.
2017-12-07 13:49:27 +01:00
Ondrej Zajicek (work)
025525266f Timers: Replace old timers with microsecond timers
The old timer interface is still kept, but implemented by new timers. The
plan is to switch from the old inteface to the new interface, then clean
it up.
2017-12-07 13:49:27 +01:00
Ondrej Zajicek (work)
28a7d3943e Timers: Integrate microsecond timers to the main loop 2017-12-07 13:46:53 +01:00
Ondrej Zajicek (work)
534215a18f Timers: Split microsecond timers from BFD code to lib 2017-12-07 13:46:53 +01:00
Ondrej Zajicek (work)
943478b00f Basic VRF support
Add basic VRF (virtual routing and forwarding) support. Protocols can be
associated with VRFs, such protocols will be restricted to interfaces
assigned to the VRF (as reported by Linux kernel) and will use sockets
bound to the VRF. E.g., different multihop BGP instances can use diffent
kernel routing tables to handle BGP TCP connections.

The VRF support is preliminary, currently there are several limitations:

- Recent Linux kernels (4.11) do not handle correctly sockets bound
to interaces that are part of VRF, so most protocols other than multihop
BGP do not work. This will be fixed by future kernel versions.

- Neighbor cache ignores VRFs. Breaks config with the same prefix on
local interfaces in different VRFs. Not much problem as single hop
protocols do not work anyways.

- Olock code ignores VRFs. Breaks config with multiple BGP peers with the
same IP address in different VRFs.

- Incoming BGP connections are not dispatched according to VRFs.
Breaks config with multiple BGP peers with the same IP address in
different VRFs. Perhaps we would need some kernel API to read VRF of
incoming connection? Or probably use multiple listening sockets in
int-new branch.

- We should handle master VRF interface up/down events and perhaps
disable associated protocols when VRF goes down. Or at least disable
associated interfaces.

- Also we should check if the master iface is really VRF iface and
not some other kind of master iface.

- BFD session request dispatch should be aware of VRFs.

- Perhaps kernel protocol should read default kernel table ID from VRF
iface so it is not necessary to configure it.

- Perhaps we should have per-VRF default table.
2017-09-06 17:38:48 +02:00
Ondrej Zajicek (work)
734e9fb8a9 Minor cleanups and fixes 2017-05-23 13:12:25 +02:00
Ondrej Zajicek (work)
e40542ef3a Minor autoconf cleanup and documentation update 2017-05-16 12:59:22 +02:00
Ondrej Zajicek (work)
fd1f355b7b Merge branch 'master' into int-new 2017-05-09 17:37:38 +02:00
Ondrej Zajicek (work)
71652572e3 Minor autoconf cleanup and documentation update 2017-05-09 16:46:41 +02:00
Ondrej Zajicek (work)
c259669fa3 Merge branch 'master' into int-new 2017-02-08 14:34:48 +01:00
Jan Moskyto Matejka
2c33da5070 Netlink: fix occasional netlink hangs on busy machines 2016-12-20 20:36:56 +01:00
Jan Moskyto Matejka
ad88b94bca Merge branch 'int-new-rpki-squashed' (early part) into int-new 2016-12-07 15:30:46 +01:00
Ondrej Zajicek (work)
d15b0b0a1b BGP redesign
Integrated and extensible BGP with generalized AFI handling,
support for IPv4+IPv6 AFI and unicast+multicast SAFI.
2016-12-07 14:20:52 +01:00
Jan Moskyto Matejka
af62c0f9f1 LibSSH may be switched off together with RPKI 2016-12-07 14:15:35 +01:00
Jan Moskyto Matejka
cdbe1defa4 SSH: Commented quirk based on undocumented behavior of LibSSH 2016-12-07 09:35:24 +01:00
Pavel Tvrdík
65d2a88dd2 RPKI protocol with one cache server per protocol
The RPKI protocol (RFC 6810) using the RTRLib
(http://rpki.realmv6.org/) that is integrated inside
the BIRD's code.

Implemeted transports are:
 - unprotected transport over TCP
 - secure transport over SSHv2

Example configuration of bird.conf:
  ...
  roa4 table r4;
  roa6 table r6;

  protocol rpki {
    debug all;

    # Import both IPv4 and IPv6 ROAs
    roa4 { table r4; };
    roa6 { table r6; };

    # Set cache server (validator) address,
    # overwrite default port 323
    remote "rpki-validator.realmv6.org" port 8282;

    # Overwrite default time intervals
    retry   10;         # Default 600 seconds
    refresh 60;         # Default 3600 seconds
    expire 600;         # Default 7200 seconds
  }

  protocol rpki {
    debug all;

    # Import only IPv4 routes
    roa4 { table r4; };

    # Set cache server address to localhost,
    # use default ports tcp => 323 or ssh => 22
    remote 127.0.0.1;

    # Use SSH transport instead of unprotected transport over TCP
    ssh encryption {
      bird private key "/home/birdgeek/.ssh/id_rsa";
      remote public key "/home/birdgeek/.ssh/known_hosts";
      user "birdgeek";
    };
  }
  ...
2016-12-07 09:35:24 +01:00
Ondrej Zajicek (work)
8860e991f6 Merge branch 'master' into int-new 2016-11-08 19:27:58 +01:00
Ondrej Zajicek (work)
c8cafc8ebb Minor code cleanups 2016-11-08 17:46:29 +01:00
Ondrej Zajicek (work)
cc5b93f72d Merge tag 'v1.6.2' into int-new 2016-11-08 17:04:29 +01:00
Jan Moskyto Matejka
3e236955c9 Build: switch on -Wextra, get rid of most of the warnings
There are several unresolved -Wmissing-field-initializers on older
versions of GCC than 5.1, all of them false positive.
2016-11-01 14:52:54 +01:00
Jan Moskyto Matejka
ccd2a3eda2 Kernel socket missing err_hook fix
Thanks to Tim Weippert for bugreport.
2016-09-29 13:21:16 +02:00
Ondřej Surý
33d22f0e9e whitespace fixes 2016-08-16 09:24:12 +02:00
Pavel Tvrdik
18c53c4567 Fix declaration of shared global variables async_*
In a header file write it with extern keyword. And in one of the *.c
file declare it without extern keyword.
2016-06-08 17:37:16 +02:00
Jan Moskyto Matejka
9dbcb11cb5 Unix IO: Tried to fix strange behavior after POLLHUP or POLLERR. 2016-05-30 14:28:22 +02:00
Jan Moskyto Matejka
925aa14912 After-master-merge simple fixes.
BSD lib/setkey.h and lib/sysio.h #include fixes.
OpenBSD's flex needs -o param without space.
V6ONLY for SK_IP fix.
2016-05-24 12:12:14 +02:00
Ondrej Zajicek (work)
08b3a24da5 IO: Minor changes in socket AF handing
AF can be specified implicitly by saddr or daddr, flags SKF_V4ONLY and
SKF_V6ONLY are to be removed.
2016-05-17 15:21:49 +02:00
Ondrej Zajicek (work)
af678af0d5 Merge remote-tracking branch 'origin/master' into int-new 2016-05-12 18:03:23 +02:00
Ondrej Zajicek (work)
286e2011d2 Miscellaneous minor fixes 2016-05-12 16:04:47 +02:00
Pavel Tvrdik
8e433d6a52 Prog Doc: Complete several missing parameters 2016-05-12 15:49:44 +02:00
Jan Moskyto Matejka
0c6dfe5236 Merge branch 'int-new' into int-new-merged 2016-05-10 14:30:49 +02:00
Jan Moskyto Matejka
7152e5efbb Build system reworked to one global Makefile with includes and no nesting
Also removed the lib-dir merging with sysdep. Updated #include's
accordingly.

Fixed make doc on recent Debian together with moving generated doc into
objdir.

Moved Makefile.in into root dir

Retired all.o and birdlib.a
Linking the final binaries directly from all the .o files.
2016-05-10 14:07:34 +02:00
Pavel Tvrdik
f7a99acb4e Initialize variable ifr in sk_setup()
==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)
2016-05-03 11:02:48 +02:00
Ondrej Zajicek (work)
a7baa09862 BSD: Add the IPsec SA/SP database entries control
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.
2016-04-13 14:37:09 +02:00
Jan Moskyto Matejka
7a7ac65682 Merge branch 'master' into int-new-channels 2016-04-08 12:28:33 +02:00
Ondrej Zajicek (work)
bd22d7f41d IO: Avoid multiple event cycles in one loop cycle.
Event cycle may took too much time and trigger next timer events, so
avoid cycling between timer and event cycles inside the loop cycle.
2016-04-06 11:57:28 +02:00
Ondrej Zajicek (work)
9e7b3ebdf9 IO: Replace RX priority heuristic with explicit mark
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.
2016-04-06 11:49:34 +02:00
Jan Moskyto Matejka
ea0a8be2ff IO/Poll: fix mistaken variable merge
The events variable is used in the short loop decision. The reasons are
not much clear, keeping this to keep the former behaviour.
2016-03-30 16:21:32 +02:00
Jan Moskyto Matejka
9c92f69272 Unix: Substituted select -> poll also in congestion checker
It does strange things when even one fd larger than FD_SETSIZE is
passed to select().
2016-03-18 11:47:13 +01:00
Jan Moskyto Matejka
fd926ed4ee Poll: Prevent the improbable case of EAGAIN after POLLIN 2016-03-15 14:57:49 +01:00
Jan Moskyto Matejka
e1c13a5a7b Unix: Rework of select-loop to poll-loop
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.
2016-03-11 12:45:10 +01:00
Pavel Tvrdík
966ca6143b io.c: fix reads from uninitialized memory 2016-01-27 12:41:59 +01:00