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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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An OSPFv2 packet with trailing data blocks (authentication and/or
link-local signaling) failed the recently implemented packet length
check, because trailing data length isn't counted in the packet header
"length" field. This commit fixes respective check conditions.
* ospf_packet.c
* ospf_packet_examin(): use "bytesdeclared" instead of "bytesonwire"
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This commit ports more packet checks to OSPFv2, in particular, LSA size
verification and Router-LSA link blocks verification.
* ospf_lsa.h: add LSA size macros
* ospf_packet.h: add struct ospf_ls_update
* ospf_packet.c
* ospf_lsa_minlen[]: a direct equivalent of ospf6_lsa_minlen[]
* ospf_router_lsa_links_examin(): new function, verifies trailing
part of a Router-LSA
* ospf_lsa_examin(): new function like ospf6_lsa_examin()
* ospf_lsaseq_examin(): new function like ospf6_lsaseq_examin()
* ospf_packet_examin(): add type-specific deeper level checks
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Rewrite some pointer arithmetics without the additional variables and
move byte order conversion inside the function.
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1. The only purpose of "ibuf" argument was to get stream size, which
was always equal to OSPF_MAX_PACKET_SIZE + 1, exactly as initialized
in ospf_new().
2. Fix the packet size check condition, which was incorrect for very
large packets, at least in theory.
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This commit ports some of the OSPFv3 packet reception checks
to OSPFv2.
* ospf_packet.c
* ospf_packet_minlen[]: a direct equivalent of ospf6_packet_minlen[]
* ospf_packet_examin(): new function designed after the first part
of ospf6_packet_examin()
* ospf_read(): verify received packet with ospf_packet_examin()
* ospf_packet.h: add convenience macros
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* ospf_packet.h: add proper str/max extern declarations
* ospf_packet.c
* ospf_packet_type_str: rewrite in "struct message", add max value
* ospf_packet_add(): use LOOKUP()
* ospf_write(): ditto
* ospf_hello(): ditto
* ospf_read(): ditto
* ospf_dump.h: the declaration does not belong here
* ospf_dump.c
* ospf_header_dump(): use LOOKUP()
* show_debugging_ospf(): ditto
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* basic.texi: @asis isn't legal with @itemize apparently, should be @w
according to docs, but @w{} seems to be needed. Fixes doc build error.
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* configure.ac: Check for latexmk and pdflatex
* Makefile.am: Add a conditional target to build HACKING.pdf, as a convenience
* HACKING.tex: A slightly more structured HACKING, is readable on its own.
* HACKING: removed
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* bgp_packet.c: (bgp_open_receive) Errors from bgp_open_option_parse are
detected, and the code will stop processing the OPEN and return. However
it does so without calling bgp_notify_send to send a NOTIFY - which means
the peer FSM doesn't get stopped, and bgp_read will be called again later.
Because it returns, it doesn't go through the code near the end of the
function that removes the current message from the peer input streaam.
Thus the next call to bgp_read will try to parse a half-parsed stream as
if it were a new BGP message, leading to an assert later in the code when
it tries to read stuff that isn't there. Add the required call to
bgp_notify_send before returning.
* bgp_open.c: (bgp_capability_as4) Be a bit stricter, check the length field
corresponds to the only value it can be, which is the amount we're going to
read off the stream. And make sure the capability flag gets set, so
callers can know this capability was read, regardless.
(peek_for_as4_capability) Let bgp_capability_as4 do the length check.
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* tools/multiple-bgpd: Make PREV more general and correct. Add comment
to route-map about why rt/soo sets are there - cause it's still broken.
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* thread.c: (thread_timer_process,thread_process) thread_list_delete nulls
thread->next. Loops need to save next first, or will only process the head.
Problem noted by Lou Berger <lberger@labn.net>.
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* bgp_attr.h: (struct bgp_attr_parser_args) Attribute parsing context,
containing common arguments.
* bgp_attr.c: (general) Move the bgp_attr_flag_invalid flag-check calls up,
out of each individual attr parser function, to be done once in attr_parse.
Similarly move the calculation of the 'total' attribute length field up
to attr_parse.
Bundle together common arguments to attr-parsing functions and helpers
into (struct bgp_attr_parser_args), so it can be passed by reference down
the stack & also de-clutter the argument lists & make it easier to
add/modify the context for attr-parsing - add local const aliases to avoid
modifying body of code too much. This also should help avoid cut & paste
errors, where calls to helpers with hard-coded attribute types are pasted
to other functions but the code isn't changed.
(bgp_attr_flags_diagnose) as above.
(bgp_attr_flag_invalid) as above.
(bgp_attr_{origin,aspath,as4_path,nexthop,med,local_pref,atomic}) as above.
(bgp_attr_{aggregator,as4_aggregator,community,originator_id}) as above
(bgp_attr_{cluster_list,ext_communities},bgp_mp_{un,}reach_parse) as above
(bgp_attr_unknown) as above.
(bgp_attr_malformed) as above. Also, startp and length have to be
special-cased, because whether or not to send attribute data depends
on the particular error - a separate length argument, distinct from
args->length, indicates whether or not the attribute data should be sent
in the NOTIFY.
(bgp_attr_aspath_check) Call to bgp_attr_malformed is wrong here, there is
no attribute parsing context - e.g. the 'flag' argument is unlikely to be
right, remove it. Explicitly handle the error instead.
(bgp_attr_munge_as4_attrs) Flag argument is pointless.
As the comment notes, the check here is pointless as AS_PATH presence
already checked elsewhere.
(bgp_attr_parse) Do bgp_attr_flag_invalid call here.
Use (struct bgp_attr_parser_args) for args to attr parser functions.
Remove out-of-context 'flag' argument to as4 checking functions.
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* bgpd/bgp_attr.c: (attr_flags_values []) array of required flags for
attributes, EXTLEN & PARTIAL masked off as "dont care" as appropriate.
(bgp_attr_flag_invalid) check if flags may be invalid, according to
the above table & RFC rules.
(bgp_attr_*) Use bgp_attr_flag_invalid.
(bgp_attr_as4_aggregator) ditto, also take startp argument for the
NOTIFY data.
(bgp_attr_parse) pass startp to bgp_attr_as4_aggregator
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* lib/thread.h: new timer macro, millisecond precision
(this was cherrypicked from pimd to isolate all non-contained changes)
From: Everton Marques <everton.marques@gmail.com>
Signed-off-by: David Lamparter <equinox@diac24.net>
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