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wireguard-next-tmp7-1
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wireguard-next-tmp7-1
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This allows to modify MPLS label stack in filters. Fixes a bug in
handling of 'gw_mpls' attribute.
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Recursive MPLS routes used hostentry from the original route, which
triggered different table than MPLS table, and therefore were not
updated.
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Old configs do not define MPLS domains and may use a static protocol
to define static MPLS routes.
When MPLS channel is the only channel of static protocol, handle it
as a main channel. Also, define implicit MPLS domain if needed and
none is defined.
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This allows changing label policy or label range without restart.
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Use mpls_new_label() / mpls_free_label() also for static labels, to keep
track of allocated labels and to enforce label ranges.
Static label allocations always use static label range, regardless of
configured label range.
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Instead of just using route attributes, static routes with
static MPLS labels can be defined just by e.g.:
route 10.1.1.0/24 mpls 100 via 10.1.2.1 mpls 200;
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Allow to shorten label range over unused area.
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Add command to show MPLS label ranges and their stats.
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The L3VPN protocol implements RFC 4364 BGP/MPLS VPNs using MPLS backbone.
It works similarly to pipe. It connects IP table (one per VRF) with (global)
VPN table. Routes passed from VPN table to IP table are stripped of RD and
filtered by import targets, routes passed in the other direction are extended
with RD, MPLS labels and export targets in extended communities. A separate
MPLS channel is used to announce MPLS routes for the labels.
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The new labeling policy MPLS_POLICY_VRF assigns one label to all routes
(from the same FEC map associated with one VRF), while replaces their
next hops with a lookup to a VRF table. This is useful for L3VPN
protocol.
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The MPLS subsystem manages MPLS labels and handles their allocation to
MPLS-aware routing protocols. These labels are then attached to IP or VPN
routes representing label switched paths -- LSPs.
There was already a preliminary MPLS support consisting of MPLS label
net_addr, MPLS routing tables with static MPLS routes, remote labels in
next hops, and kernel protocol support.
This patch adds the MPLS domain as a basic structure representing local
label space with dynamic label allocator and configurable label ranges.
To represent LSPs, allocated local labels can be attached as route
attributes to IP or VPN routes with local labels as attributes.
There are several steps for handling LSP routes in routing protocols --
deciding to which forwarding equivalence class (FEC) the LSP route
belongs, allocating labels for new FECs, announcing MPLS routes for new
FECs, attaching labels to LSP routes. The FEC map structure implements
basic code for managing FECs in routing protocols, therefore existing
protocols can be made MPLS-aware by adding FEC map and delegating
most work related to local label management to it.
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In general, private_id is sparse and protocols may want to map some
internal values directly into it. For example, L3VPN needs to
map VPN route discriminators to private_id.
OTOH, u32 is enough for global_id, as these identifiers are dense.
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Add a new protocol offering route aggregation.
User can specify list of route attributes in the configuration file and
run route aggregation on the export side of the pipe protocol. Routes are
sorted and for every group of equivalent routes new route is created and
exported to the routing table. It is also possible to specify filter
which will run for every route before aggregation.
Furthermore, it will be possible to set attributes of new routes
according to attributes of the aggregated routes.
This is a work in progress.
Original work by Igor Putovny, subsequent cleanups and finalization by
Maria Matejka.
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This is a backport cherry-pick of commits
165156beeb2926472bbceca3c103aacc3f81a8cc
cce974e8ea992d0e6d2f649eca7880b436d91d71
from the v3.0 branch as we need symbol hashes directly inside their
scopes for more general usage than before.
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Use 51820 (default wireguard port) as default tunnel type.
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Most syntactic constructs in BIRD configuration (e.g. protocol options)
are defined as keywords, which are distinct from symbols (user-defined
names for protocols, variables, ...). That may cause backwards
compatibility issue when a new feature is added, as it may collide with
existing user names.
We can allow keywords to be shadowed by symbols in almost all cases to
avoid this issue.
This replaces the previous mechanism, where shadowable symbols have to be
explictly added to kw_syms.
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Thanks to Alexander Zubkov for the notice.
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Nonterminal bytestring allows to provide expressions to be evaluated in
places where BYTETEXT is used now: passwords, radv custom option.
Based on the patch from Alexander Zubkov <green@qrator.net>, thanks!
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Replace f_eval_int() function with a type-generic variant: cf_eval().
Implement similar fuction: cf_eval_int() via inline call to cf_eval().
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- Rename BYTESTRING lexem to BYTETEXT, not to collide with 'bytestring' type name
- Add bytestring type with id T_BYTESTRING (0x2c)
- Add from_hex() filter function to create bytestring from hex string
- Add filter test cases for bytestring type
Minor changes by committer.
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Despite not having defined 'master interface', VRF interfaces should be
treated as being inside respective VRFs. They behave as a loopback for
respective VRFs. Treating the VRF interface as inside the VRF allows
e.g. OSPF to pick up IP addresses defined on the VRF interface.
For this, we also need to tell apart VRF interfaces and regular interfaces.
Extend Netlink code to parse interface type and mark VRF interfaces with
IF_VRF flag.
Based on the patch from Erin Shepherd, thanks!
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Now we use rt_notify() and channels for both feed and notifications,
in both import tables (pre-policy) and regular tables (post-policy).
Remove direct walk in bmp_route_monitor_snapshot().
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