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this merges a bgp capability negotiation fix where bgpd would fail if no
multiprotocol capability was present, but other capabilities were.
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Conflicts:
bgpd/bgp_route.c
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Address problem where bgpd would reject a session if a peer sent some
capabilities in its Open message, but did not include a Multiprotocol
extensions capability. Note that the session would come up if there
were no capabilities at all in the Open message.
* Add the 'mp_capability' out parameter to
bgp_capability_parse(). Set it to '1' if a Multiprotocol
extensions capability is encountered.
* Switch on 'mp_capability' instead of 'capability' in the calling
functions to determine if the peer indicated the set of AFI/SAFIs
it supports.
The net result is that when a peer does not send an MP capability,
it is assumed to support the AFI/SAFIs configured for it locally.
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* bgpd/bgp_attr.c: (bgp_attr_flags_diagnose) debug code for error-handling
paths probably shouldn't assert, instead it should just log that there
was no problem.
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* bgpd/bgp_attr.c: (bgp_attr_parse) the invalid flag check call to
bgp_attr_malformed is pretty useless if it doesn't actually allow
for the PROCEED non-error case.
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* bgp_attr.c: (bgp_attr_flag_invalid) flags is meant to be masked
off with the mask variable...
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* bgp_attr.c: (bgp_attr_malformed) When a malformed attribute error can be
ignored, and BGP message processing may still proceed, the stream getp
should be adjusted to the end of the attribute - the caller may not have
consumed all the attribute. Problem noted by Martin Winter in bug 678.
Also, rename the 'startp' local to 'notify_datap', for clarity.
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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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* 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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The patch adds the ipv6 network command in the BGP multicast address
family mode.
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This patch contains the following:
1. Addition of IPv6 SAFI_MULTICAST BGP routes into the BGP Multicast RIB.
2. Deletion of IPv6 SAFI_MULTICAST BGP routes from the BGP Multicast RIB.
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This patch contains the following:
1. Addition of IPv4 SAFI_MULTICAST BGP routes into the BGP Multicast RIB.
2. Deletion of IPv4 SAFI_MULTICAST BGP routes from the BGP Multicast RIB.
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* bgp_nexthop.c: The nexthop lookup cache has to return success for queried
nexthops if bgpd isn't connected to zebra, or else BGP without zebra doesn't
work.
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* bgpd/bgp_attr.c: (bgp_attr_aspath) error message could be misleading,
clearly log what flag was incorrect.
(Problem noted in "bgpd: fix error message in bgp_attr_aspath()" in
Quagga-RE)
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* bgp_attr.c
* attr_flag_str: new message list
* bgp_attr_flags_diagnose(): new function, implements previously added
error logging in a generic way
* bgp_attr_origin(): use bgp_attr_flags_diagnose()
* bgp_attr_nexthop(): ditto
* bgp_attr_med(): ditto
* bgp_attr_local_pref(): ditto
* bgp_attr_atomic(): ditto
* bgp_attr_originator_id(): ditto
* bgp_attr_cluster_list(): ditto
* bgp_mp_reach_parse(): ditto
* bgp_mp_unreach_parse(): ditto
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* bgp_nexthop.c (show_ip_bgp_scan_tables): access proper structure field
in AF_INET6 case, handle ifindex NH type properly
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bgp_nexthop_onlink(): zlookup is not used here at all
bgp_nexthop_lookup_ipv6(): rely on the detection performed by "query"
function (this also changes the fallback value to 0), reorder if-block
bgp_nexthop_lookup(): idem
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* bgp_nexthop.c: (show_ip_bgp_scan) transform into
show_ip_bgp_scan_tables(), which uses inet_ntop() and can dump
nexthops on request; (show_ip_bgp_scan_detail_cmd) new function
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bgp_nexthop_lookup_ipv6(): declare variables where they are actually
used, drop no-op initialization (the field is already 0)
bgp_nexthop_lookup(): ditto
bgp_nexthop_check_ebgp(): rename to bgp_nexthop_onlink()
bgp_nexthop_cache_changed(): rename to bgp_nexthop_cache_different()
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* (general) Move functions in headers into files, to be compiled into
shared object files. Remove inline qualifier from functions. Let the
compiler do the work.
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...otherwise 4294967295 is not a valid value on 32bit systems
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* lib/prefix.h
* IPV4_CLASS_DE(): make consistent with counterpart macros
* bgp_packet.c
* bgp_open_receive(): test using macro instead of ">="
* bgp_route.c
* bgp_update_rsclient(): idem
* bgp_update_main(): idem
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(This patch was modified to leave calls to stream_getl() in place, they
are necessary for the stream's internal pointer to advance to the
correct position. -- Denis)
Signed-off-by: Denis Ovsienko <infrastation@yandex.ru>
Fix gcc warnings about varables that are set but never used.
* bgpd/bgp_attr.c
* cluster_unintern(): ret
* transit_unintern(): ret
* bgp_attr_default_intern(): attre
* bgp_mp_reach_parse(): rd_high, rd_low
* bgpd/bgp_route.c
* bgp_announce_check_rsclient(): bgp
* bgpd/bgp_zebra.c
* zebra_read_ipv4(): ifindex
* zebra_read_ipv6(): ifindex
* bgpd/bgpd.c
* bgp_config_write_peer(): filter
* lib/distribute.c
* distribute_list_all(): dist
* distribute_list(): dist
* distribute_list_prefix_all(): dist
* distribute_list_prefix(): dist
* lib/if_rmap.c
* if_rmap(): if_rmap
* lib/vty.c
* vty_accept(): vty
* lib/zclient.c
* zclient_read(): ret
* zebra/irdp_interface.c
* if_group(): zi
* zebra/rt_netlink.c
* kernel_read(): ret, sock
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This issue has been pointed out by Lou Berger and Tim Browski.
* bgp_packet.c
* bgp_route_refresh_receive(): restore if() condition, which was
broken by commit fdbc8e77c88f751924299d0bc752371d5cc31116
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getaddrinfo returns a list of socket parameters for listening. it
will contain both IPv4 and IPv6 listening sockets. unless we use
IPV6_V6ONLY on the IPv6 ones, only the socket listed first will
work. if the IPv4 one came first, the IPv6 one would get an
"Address in use" error.
this functionality was already present for bgpd and its listening
sockets. as it is needed for vtys as well, make it a common helper.
Conflicts:
lib/sockunion.c
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this replaces most occurences of routing protocol lists by preprocessor
defines from route_types.h. the latter is autogenerated from
route_types.txt by a perl script (previously awk). adding a routing
protocol now is mostly a matter of changing route_types.txt and log.c.
Conflicts:
lib/route_types.awk
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All daemons modified to support custom path to zserv
socket.
lib: generalize a zclient connection
zclient_socket_connect added. zclient_socket and
zclient_socket_un were hidden under static expression.
"zclient_serv_path_set" modified.
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New clause 'match probability <percentage value>'
was added in route-maps (bgpd/bgp_routemap.c modified).
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Second patch replaces "VTY_GET_LONG ("AS", as_ul, arg);"
by "VTY_GET_INTEGER_RANGE ("AS", as, arg, 1, BGP_AS4_MAX);"
as done in all other code, which parses AS numbers.
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When doing valgrind testing, the privledges from zprivs_init() need
to be cleaned up on exit.
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BGP was ignoring nexthop info for static and other redistributed
routes for IPv6. Build extra attribute info to store the nexthop.
See also:
https://bugzilla.vyatta.com/show_bug.cgi?id=6073
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this fixes commit b881c7074bb698aeb1b099175b325734fc6e44d2
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bgp_bind_address is replaced with sockunion_bind.
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if update-source was given as interface name, bgpd was unconditionally
trying to bind to an IPv4 address from that interface.
change function to find the best-matching (number of address bits)
same-family address on the interface.
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To set the TOS bits on TCP connections, platforms that restrict
capabilities need the priv level to be raised before the sockopt
is set, and this requires the ZCAP_NET_ADMIN priv.
* bgp_main.c: update _caps_p to include ZCAP_NET_ADMIN
* bgp_network.c
* bgp_connect(): request ZPRIVS_RAISE/ZPRIVS_LOWER
* bgp_listener(): request ZPRIVS_RAISE earlier
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* bgp_attr.c (bgp_attr_originator_id, bgp_attr_cluster_list): provide
required arguments to bgp_attr_malformed()
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* bgp_attr.c
* bgp_attr_aggregator(): check Optional/Transitive flag bits
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Commit 05a4936b713b9882171d0f7fb20b8439df23939e fixed some of the
attributes involved, but not all. This commit should do it.
* bgp_attr.c
* bgp_attr_originator_id()
* bgp_attr_cluster_list()
* bgp_mp_reach_parse()
* bgp_mp_unreach_parse()
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Some of the recent attribute flags/length checks copied from QRE use
bgp_notify_send_with_data() directly, but master branch assumes
using bgp_attr_malformed().
* bgp_attr.c
* bgp_attr_med()
* bgp_attr_local_pref()
* bgp_attr_atomic()
* bgp_attr_originator_id()
* bgp_attr_cluster_list()
* bgp_mp_reach_parse()
* bgp_mp_unreach_parse()
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* bgp_attr.[ch]
* bgp_mp_reach_parse(): add extra arguments and a uniform flag
check block
* bgp_mp_unreach_parse(): idem
* bgp_attr_parse(): provide extra arguments
* bgp_mp_attr_test.c
* parse_test(): justify respective calls
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* bgp_attr.c
* bgp_attr_cluster_list(): accept extra argument, add checks for
"optional", "transitive" and "partial" bits, log each error
condition independently
* bgp_attr_parse(): provide extra arguments
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* bgp_attr.c
* bgp_attr_originator_id(): accept extra argument, add checks for
"optional", "transitive" and "partial" bits, log each error
condition independently
* bgp_attr_parse(): provide extra arguments
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IPv6 supports the same concept of differentiated service for routing
protocols as IPv4, but like too many things, the standards committee
decided that having two names for the same thing wasn't good enough and
introduced a third more generic term transport class.
The socket option to set transport class works the same as IPv4, but the
arguments are different.
* lib/sockopt.[ch]
* setsockopt_ipv6_tclass(): new function
* bgpd/bgp_network.c
* bgp_connect(): set socket option
* bgp_listener(): set socket option
* ospf6d/ospf6_network.c
* ospf6_set_transport_class(): new function
* ospf6_serv_sock(): set socket option
* ripngd/ripngd.c
* ripng_make_socket(): set socket option
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