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pflags
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Kernel route sync is done by other ways now and this code is not used
currently.
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Direct protocol hooks for IGP metric inside nest/rt-table.c make the
protocol API unnecessarily complex. Instead, we use a proper callback.
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It is an auxiliary key in the routing table, not a route attribute.
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This is needed to provide the protocols the full old route after filters
when export table is enabled.
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tables are present
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We can also quite simply allocate bigger blocks. Anyway, we need these
blocks to be aligned to their size which needs one mmap() two times
bigger and then two munmap()s returning the unaligned parts.
The user can specify -B <N> on startup when <N> is the exponent of 2,
setting the block size to 2^N. On most systems, N is 12, anyway if you
know that your configuration is going to eat gigabytes of RAM, you are
almost forced to raise your block size as you may easily get into memory
fragmentation issues or you have to raise your maximum mapping count,
e.g. "sysctl vm.max_map_count=(number)".
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coredump.
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unnecessary syscalls
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unnecessary syscalls
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Remove assumption that main channel is the only channel.
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Just use hello_expiry for that, keep init_expiry for initial
unauthentized neighbors.
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One of previous patches broke password list parsing code, fix that.
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Some cleanups and bugfixes to the previous patch, including:
- Fix rate limiting in index mismatch check
- Fix missing BABEL_AUTH_INDEX_LEN in auth_tx_overhead computation
- Fix missing auth_tx_overhead recalculation during reconfiguration
- Fix pseudoheader construction in babel_auth_sign() (sport vs fport)
- Fix typecasts for ptrdiffs in log messages
- Make auth log messages similar to corresponding RIP/OSPF ones
- Change auth log messages for events that happen during regular
operation to debug messages
- Switch meaning of babel_auth_check*() functions for consistency
with corresponding RIP/OSPF ones
- Remove requirement for min/max key length, only those required by
given MAC code are enforced
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This implements support for MAC authentication in the Babel protocol, as
specified by RFC 8967. The implementation seeks to follow the RFC as close
as possible, with the only deliberate deviation being the addition of
support for all the HMAC algorithms already supported by Bird, as well as
the Blake2b variant of the Blake algorithm.
For description of applicability, assumptions and security properties,
see RFC 8967 sections 1.1 and 1.2.
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In preparation for adding authentication checks, refactor the TLV
walking code so it can be reused for a separate pass of the packet
for authentication checks.
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Add min/max key length fields to the MAC algorithm description and
validate configured keys before they are used.
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Add support for specifying a password in hexadecimal format, The result
is the same whether a password is specified as a quoted string or a
hex-encoded byte string, this just makes it more convenient to input
high-entropy byte strings as MAC keys.
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Import the blake2-kat.h header with test vector output from the blake
reference implementation, and add tests to mac_test.c to compare the
output of the Bird MAC algorithm implementations with that reference
output.
Since the reference implementation only has test vectors for the full
output size, there are no tests for the smaller-sized output variants.
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The Babel MAC authentication RFC recommends implementing Blake2s as one of
the supported algorithms. In order to achieve do this, add the blake2b and
blake2s hash functions for MAC authentication. The hashing function
implementations are the reference implementations from blake2.net.
The Blake2 algorithms allow specifying an arbitrary output size, and the
Babel MAC spec says to implement Blake2s with 128-bit output. To satisfy
this, we add two different variants of each of the algorithms, one using
the default size (256 bits for Blake2s, 512 bits for Blake2b), and one
using half the default output size.
Update to BIRD coding style done by committer.
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Simplify the code and fix an issue with getentropy() return value.
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Add a wrapper function in sysdep to get random bytes, and required checks
in configure.ac to select how to do it. The configure script tries, in
order, getrandom(), getentropy() and reading from /dev/urandom.
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Routes from downed protocols stay in rtable (until next rtable prune
cycle ends) and may be even exported to another protocol. In BGP case,
source BGP protocol is examined, although dynamic parts (including
neighbor entries) are already freed. That may lead to crash under some
race conditions. Ensure that freed neighbor entry is not accessed to
avoid this issue.
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underlying interface disappears
When an interface disappears, all the neighbors are freed as well. Seqno
requests were anyway not decoupled from them, leading to strange
segfaults. This fix adds a proper seqno request list inside neighbors to
make sure that no pointer to neighbor is kept after free.
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Some area handling code got confused by IPv4 setup in OSPFv3 mode.
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.gitlab-ci.yml:
+ pkg targets for some distros added
+ artifacts added
- some distros were commented out (due to errors).
misc/docker/*:
+ Dockerfiles updated with the necessary packages.
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