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It was supposed to do tail-recursion in interpret() but it didn't
compile as such. Converting it to loop makes a significant filter
performance improvement for flat filters.
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The two-letter instructions were quite messy but they could be easily
read from memory dumps. Now GDB (since 2012) supports pretty printing
enum values and GCC checks the switch construction for missing enum
values so we are converting the nice two-byte values to enums.
Anyway, the enum still keeps the old two-byte values to be able to read
the instruction codes even without GDB from plain memory dump.
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All keywords used in Babel config have to be declared locally.
Thanks to Leo Vandewoestijne for the bugreport.
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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.
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The option allows to specify that some cease subcodes should
disable the protocol when received.
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A filter should log messages only if executed explicitly (e.g., during
route export or route import). When a filter is executed for technical
reasons (e.g., to establish whether a route was exported before), it
should run silently.
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According to GNU Readline developers, if we link with libreadline then
there is no need to link with libhistory at all.
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RFC6126bis introduces a flags field for the Hello TLV, and adds a unicast flag
that is used to signify that a hello was sent as unicast. This adds parsing of
the flags field and ignores such unicast hellos, which preserves compatibility
until we can add a proper implementation of the unicast hello mechanism.
Thanks to Toke Hoiland-Jorgensen for the patch.
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The old ones do not work on current Debian.
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And change default values of specific route options to be consistent with
values of default router options.
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The patch implements Default Router Preferences and More-Specific Routes
(RFC 4191) for RAdv protocol, allowing to announce router preference and
more specific routes in router advertisements. Routes can be exported to
RAdv like to regular routing protocols.
Some cleanups, bugfixes and other changes done by Ondrej Zajicek.
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They are internally ints, but they got refused as a wrong type. This
fixes setting of the BGP origin and is also needed for RA.
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The patch implements BGP Administrative Shutdown Communication (RFC 8203)
allowing BGP operators to pass messages related to BGP session
administrative shutdown/restart. It handles both transmit and receive of
shutdown messages. Messages are logged and may be displayed by show
protocol all command.
Thanks to Job Snijders for the basic patch.
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Thanks to Alexander Zubkov for the notification.
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Actually much simpler than expected.
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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.
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Starting from Linux 4.11, IPv6 ECMP routes are now notified using
RTA_MULTIPATH, like IPv4 ones. The patch adds support for RTA_MULTIPATH
parsing for IPv6 routes. This also enables to parse ECMP alien routes
correctly.
Thanks to Vincent Bernat for the original patch.
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Incorrect structure alignment breaks kernel routing table updates on
FreeBSD/ARM (and perhaps other platforms).
Thanks to Eugene Sevastyanov for the original patch.
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Add configuration and docker definitions for tests and builds in Gitlab
CI platform.
Some of them currently fail, which is a known problem.
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Keep a cache of all the relevant prefixes we send out. When a prefix
appears, insert it into the cache. If it dies, keep it there for a
while, marked as dead.
Send out the dead prefixes with zero lifetime.
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Put the prefix option preparation into a separate function. We're going
to reuse that bit of code.
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non-primary is ugly, just omit it (and use primary in the other case).
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A non-primary address isn't necessarily secondary, that's an independent
flag.
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A TODO file last updated 5 years ago is useless.
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Adapt the naming conventions to be a bit closer to the other protocols.
proto_radv -> radv_proto
struct radv_proto *ra -> struct radv_proto *p
struct proto *p -> struct proto *P
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Thanks to Lennert Buytenhek <buytenh@wantstofly.org> for the patch.
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The old hash table had fixed size, which makes it slow for config files
with large number of symbols and symbol lookups. The new one is growing
according to needs.
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Function isspace() expects to get *unsigned* chars (encoded as ints),
not that it matters for plain ASCII.
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Simplify BIRD client library checks, add proper devel header checks and
prefer dependency on just tinfo than full ncurses.
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Replaced by constant compile-time expressions. CPU_STRUCT_ALIGN is not
really correct, but is consistent with the old behavior.
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