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Babel makes use of blackhole routes to prevent routing loops between
overlapping prefixes shortly after a route is retracted (see RFC 6126
sections 2.8 and 3.5.5). This patch adds support for installing such
blackhole routes.
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Factorise the common parts of the in/out filtering functions. This also
fixes a bug with filtered out routes, which in babeld are signalled by
a filter returing INFINITY, not -1.
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Stand-alone babeld installs routes using both a next-hop gateway
and an interface index. Unfortunately, this doesn't work for IPv4
under Quagga.
We now ignore the ifindex when installing IPv4 routes, which makes
Babel work for IPv4 in prefix-based networks. Of course this breaks
IPv4 mesh networks, unless you play some tricks with your interfaces'
netmasks.
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Perhaps could it be able to free already free memory (so free(NULL)),
in function interface_reset(). On other hand, it initiated untracked
interfaces, raising (at least) inappropriate messages. Finally, I
remove the BABEL_IF_IS_ENABLE flag, witch was not really usefull.
Note the test if_up isn't weaker, because (...IS_UP => ...IS_ENABLE).
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We are interested by eui64 with at least 6 octets.
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Babelz is the last version of the stand-alone babel daemon. In
particular, it use multiple channels to diminuate
interferences. Please refer to this one for more details.
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Add proper initialization of SAFI field, which is present in the
revisions of zapi_ipv4 and zapi_ipv6 structures specific to
MP-BGP patchset. Without this change no Babel routes could make
into zebra RIB.
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Zebra doesn't set errno to EEXIST if we add a route who was already in
the kernel, so we always returned after just doing "add; delete". This
patch fix the problem by doing "delete; add" always.
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* babel_interface.c
* show_babel_interface_sub(): new function to process one ifp
* show_babel_interface(): new function, VTY wrapper
* babel_if_init(): update respectively
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* net.c
* babel_send(): arguments are not treated as "const", justify
declaration
* babel_main.c: declare constant pointers as such
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Including system headers is not necessary with zebra.h included and
sometimes results in "__ASSERT_FUNCTION redefined" compilation warning.
* babeld.c
* babel_distribute_update_interface(): make static
* babel_interface.c
* interface_config_write(): unused 'babel_ifp'
* don't include system headers
* message.c
* send_request(): unused 'babel_ifp'
* send_multihop_request(): idem
* don't include system headers
* route.c: don't include system headers
* xroute.c: idem
* source.h: newline at EOF
* message.h: idem
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FreeBSD system headers have their own "struct route", which made it
impossible to compile babeld. Switching babeld to "struct babel_route".
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* Initial import of the Babel routing protocol, ported to Quagga.
* LICENCE: Update the original LICENCE file to include all known potentially
applicable copyright claims. Ask that any future contributors to babeld/
grant MIT/X11 licence to their work.
* *.{c,h}: Add GPL headers, in according with the SFLC guidance on
dealing with potentially mixed GPL/other licensed work, at:
https://www.softwarefreedom.org/resources/2007/gpl-non-gpl-collaboration.html
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While defining two "maskbytes" arrays for the respective endiannesses,
the code was unconditionally using one that only worked on little endian
systems.
Use preprocessor macros to avoid the somewhat expensive
htonl/ntohl macros.
From: Renato Westphal <renatowestphal@gmail.com>
Signed-off-by: David Lamparter <equinox@diac24.net>
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Protocol version checks fits ospf_packet_examin() better (like it is
implemented in ospf6d), and packet type check is already there.
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The old ospf_check_auth() function did two different jobs depending on
AuType. For Null and Simple cases it actually authenticated the packet,
but for Cryptographic case it only checked declared packet size (not
taking the actual number of bytes on wire into account). The calling
function, ospf_verify_header(), had its own set of MD5/checksum checks
dispatched depending on AuType.
This commit makes the packet size check work against the real number of
bytes and moves it to ospf_packet_examine(). All MD5/checksum
verification is now performed in ospf_check_auth() function.
* ospf_packet.c
* ospf_packet_examin(): check length with MD5 bytes in mind
* ospf_verify_header(): remove all AuType-specific code
* ospf_check_auth(): completely rewrite
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