Add a bit of code that allows us to dump the mac hash. Future
commits will actually add entries to the mac hash and then operate
on it.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
I bulk-fixed "recieved" as a misspelling in 0437e10... but didn't notice
there was a JSON value among these.
Signed-off-by: David Lamparter <equinox@diac24.net>
Missing endline was resulting in garbled output in vtysh in some cases, for example, when there were no peers configured and the user has issued "bgp disable-ebgp-connected-route-check" command.
Signed-off-by: Anton Degtyarev <anton@cumulusnetworks.com>
In rare cases when the default BGP instance is instantiated after VRF bgp instances (see comment to bgp_mplsvpn.c:vpn_leak_postchange_all() for an example), the "router bgp" command needs to call vpn_leak_postchange_all() to start the route leaking process. The issue was it was never checked if the "router bgp" command was used to create the default BGP instance or just to enter into "router bgp" command context. This resulted in vpn_leak_postchange_all() executed every time (and vpn routes re-announced to all peers) when the user was entering "router bgp" command context.
Signed-off-by: Anton Degtyarev <anton@cumulusnetworks.com>
The motivation for this patch is to address a concerning behavior of
tx-addpath-bestpath-per-AS. Prior to this patch, all paths' TX ID was
pre-determined as the path was received from a peer. However, this meant
that any time the path selected as best from an AS changed, bgpd had no
choice but to withdraw the previous best path, and advertise the new
best-path under a new TX ID. This could cause significant network
disruption, especially for the subset of prefixes coming from only one
AS that were also communicated over a bestpath-per-AS session.
The patch's general approach is best illustrated by
txaddpath_update_ids. After a bestpath run (required for best-per-AS to
know what will and will not be sent as addpaths) ID numbers will be
stripped from paths that no longer need to be sent, and held in a pool.
Then, paths that will be sent as addpaths and do not already have ID
numbers will allocate new ID numbers, pulling first from that pool.
Finally, anything left in the pool will be returned to the allocator.
In order for this to work, ID numbers had to be split by strategy. The
tx-addpath-All strategy would keep every ID number "in use" constantly,
preventing IDs from being transferred to different paths. Rather than
create two variables for ID, this patch create a more generic array that
will easily enable more addpath strategies to be implemented. The
previously described ID manipulations will happen per addpath strategy,
and will only be run for strategies that are enabled on at least one
peer.
Finally, the ID numbers are allocated from an allocator that tracks per
AFI/SAFI/Addpath Strategy which IDs are in use. Though it would be very
improbable, there was the possibility with the free-running counter
approach for rollover to cause two paths on the same prefix to get
assigned the same TX ID. As remote as the possibility is, we prefer to
not leave it to chance.
This ID re-use method is not perfect. In some cases you could still get
withdraw-then-add behaviors where not strictly necessary. In the case of
bestpath-per-AS this requires one AS to advertise a prefix for the first
time, then a second AS withdraws that prefix, all within the space of an
already pending MRAI timer. In those situations a withdraw-then-add is
more forgivable, and fixing it would probably require a much more
significant effort, as IDs would need to be moved to ADVs instead of
paths.
Signed-off-by Mitchell Skiba <mskiba@amazon.com>
local mac add/del comes from zebra. the hidden commands help verify
various race conditions between bgp and zebra.
Ticket: CM-22687
Reviewed By: CCR-7939
Signed-off-by: Anuradha Karuppiah <anuradhak@cumulusnetworks.com>
Problems were reported with the name of the default vrf and the
default bgp instance being different, creating confusion. This
fix changes both to "default" for consistency.
Ticket: CM-21791
Signed-off-by: Don Slice <dslice@cumulusnetworks.com>
Reviewed-by: CCR-7658
Testing: manual testing and automated tests before pushing
If you are using bgp unnumbered( or interface based peers )
when we detect an error give the user a bit more of a clue
what they may have done wrong.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
1. "show bgp ipv4 json"
- Added "network" field which displays a prefix in 'prefix/prefixlen' format.
2. "show bgp ipv6 json"
- Added "network" field which displays a prefix in 'prefix/prefixlen' format.
- JSON does not have "prefix", "prefixLen" fields which are present in IPv4
command. Added these fields as they are useful.
3. "show bgp ipv4/ipv6 neighbor <neighbor_addr> advertised-routes json"
- Added "network" field.
4. "show bgp ipv4/ipv6 summary json"
- Added "pfxSnt" for peers. This count is obtained from corresponding
update_subgroup.
5. "show bgp neighbor json"
- Added "sentPrefixCounter"
Signed-off-by: Ameya Dharkar <adharkar@vmware.org>
When executing vpn route-map config for importation, the running-config
records vrf import route-map instead. Actually, this is a problem when
restarting configuring when using vpn route-map. The choice is done to
move to vrf format, when at least one import list is created for vrfs.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
Do a straight conversion of `struct bgp_info` to `struct bgp_path_info`.
This commit will setup the rename of variables as well.
This is being done because `struct bgp_info` is not descriptive
of what this data actually is. It is path information for routes
that we keep to build the actual routes nexthops plus some extra
information.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Cleanup calls where we were passing in the su for
peer creation a tiny bit.
Creating a peer from the cli will always have a conf_if *or*
a su but not both. While a doppelganger will have both.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
1. "show bgp ipv4 json"
- Corresponding CLI has "network" field which displays a prefix in
'prefix/prefixlen' format. Added this "network" field to JSON as well.
- Following fields have different names in JSON and CLI.
CLI JSON
metric med
locPrf localPref
path aspath
Added fields "metric", "locPrf" and "path" in JSON for CLI/JSON
consistency. Older JSON fields med, localPref, aspath will be
deprecated in future.
2. "show bgp ipv6 json"
- Similar changes as "show bgp ipv4 json"
- JSON does not have "prefix", "prefixLen" fields which are present in IPv4
command. Added these fields as they are useful.
3. "show bgp ipv4/ipv6 neighbor <neighbor_addr> advertised-routes json"
- Added "network" field.
- Added locPrf, path fields for CLI/JSON consistency. localPref, aspath will
be deprecated in future.
4. "show bgp ipv4/ipv6 summary json"
- Added "pfxRcd" for CLI/JSON consistency.
"prefixReceivedCount" will be deprecated in future.
- Added "pfxSnt" for peers. This count is obtalned from corresponding
update_subgroup. This needed a fix in the code where we copy fields
for a split update_subgroup from the parent update_subgrp.
New subgrp should inherit subgrp->scount(Count of advertized prefixes)
of the parent subgrp.
5. "show bgp neighbor json"
- Added "sentPrefixCounter"
6. "show bgp ipv4/ipv6 <prefix> json"
- Added "metric" field for CLI/JSON consistency.
"med" will be deprecated in future.
Signed-off-by: Ameya Dharkar <adharkar@vmware.org>
The existing commands "ip as-path", "ip community list", "ip extcommunity
list" & "ip largecommunity list" is used to configure both for ipv4 and
ipv6. So the prefix "ip" is removed from these commands.
All the configuration, show related configuration, show running config
& boot up with write memory is also verified with the provided fix.
Signed-off-by: Sarita Patra <saritap@vmware.com>
The `struct bgp_addr` is not needed for anything other than
the address hash. Isolate this data structure so that it
is not polluting up the name space.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Problem reported that some bgp and ospf json commands did not return
any json output at all if the bgp/ospf instance did not exist.
Additionally, some bgp and ospf json commands did not return any json
output if the instance existed but no neighbors were defined. This
fix makes these commands more consistent in returning empty braces for
json output and issue a message if not using json output. Additionally,
made the flag "use_json" a bool to make it consistent since previously,
it had been defined as an int, char, u_char, and bool at various places.
Ticket: CM-21040
Signed-off-by: Don Slice <dslice@cumulusnetworks.com>
Because a VRF name can be used for default VRF, or an alias of an
already created VRF can be passed as parameter, the default VRF name
must be found out. This avoids creating double BGP instances for
example.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
While perusing CONFDATE I noticed that we had a couple
CONFDATE 201805, which we were not picking up( for other
reasons and fixed in a different PR ). But upon investigation
of these I noticed that the commits where in 201805, so these
CONFDATES should be in 2019
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
* Added parameter in bgp_redistribute_set() to indicate change
in redistribute option
* If there is change, call bgp_redistribute_unreg() to withdraw routes
Signed-off-by: kssoman <somanks@vmware.com>
The dn_count for dynamic Peers was not being updated when
using json output.
Signed-off-by: Dongling Duan <dlduan@amazon.com>
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Adding EVPN prefix of Type 2, 3 and 5 routes to bgp updates
prefix filters.
Ticket:CM-14476
Testing Done:
Configure multiple evpn options under 'debug bgp updates prefix'.
Below is the running-config output.
MAC-IP route with just MAC:
debug bgp updates prefix l2vpn evpn type macip mac
00:02:00:0a:0a:0a
MAC-IP route with MAC and IP:
debug bgp updates prefix l2vpn evpn type macip mac
00:02:00:00:00:0c ip 45.0.1.9
MAC-IP route with just MAC and IPv6:
debug bgp updates prefix l2vpn evpn type
macip mac 00:02:00:00:00:0a ip 2001:fee1:0:1::8
Type-3:
debug bgp updates prefix l2vpn evpn type multicast ip 27.0.1.19
Type-5:
debug bgp updates prefix l2vpn evpn type prefix
ip 2060:1:1:1::/64
Signed-off-by: Chirag Shah <chirag@cumulusnetworks.com>
This commit removes various parts of the bgpd implementation code which
are unused/useless, e.g. unused functions, unused variable
initializations, unused structs, ...
Signed-off-by: Pascal Mathis <mail@pascalmathis.com>
Issue 2473
VRF-VPN route-leaking configuration commands assumed existence of
default bgp instance. If a non-default vrf configuration occurred
before the default vrf configuration, it would result in a (NULL)
dereference to the non-existent default vrf.
This change 1) detects non-existence of default vrf and skips corresponding
RIB updating that normally occurs during configuration changes of the
route-leaking parameters; and 2) when the default bgp instance is defined,
runs the deferred RIB updating.
In vpn_leak_to_vrf_update_all(), replace early return if bgp_vpn is NULL
with assert, as the former would lead to subtly wrong RIB contents. The
underlying issue that led to commit 73aed5841a
should be fixed by the above changes.
Signed-off-by: G. Paul Ziemba <paulz@labn.net>
This commit introduces BGP peer-group overrides for the last set of
peer-level attrs which did not offer that feature yet. The following
attributes have been implemented: description, local-as, password and
update-source.
Each attribute, with the exception of description because it does not
offer any inheritance between peer-groups and peers, is now also setting
a peer-flag instead of just modifying the internal data structures. This
made it possible to also re-use the same implementation for attribute
overrides as already done for peer flags, AF flags and AF attrs.
The `no neighbor <neigh> description` command has been slightly changed
to support negation for no parameters, one parameter or * parameters
(LINE...). This was needed for the test suite to pass and is a small
change without any bigger impact on the CLI.
Signed-off-by: Pascal Mathis <mail@pascalmathis.com>
This commit implements BGP peer-group overrides for the timer flags,
which control the value of the hold, keepalive, advertisement-interval
and connect connect timers. It was kept separated on purpose as the
whole timer implementation is quite complex and merging this commit
together with with the other flag implementations did not seem right.
Basically three new peer flags were introduced, namely
*PEER_FLAG_ROUTEADV*, *PEER_FLAG_TIMER* and *PEER_FLAG_TIMER_CONNECT*.
The overrides work exactly the same way as they did before, but
introducing these flags made a few conditionals simpler as they no
longer had to compare internal data structures against eachother.
Last but not least, the test suite has been adjusted accordingly to test
the newly implemented flag overrides.
Signed-off-by: Pascal Mathis <mail@pascalmathis.com>
This commit cleans up some ugly leftovers from previous flag-override
implementation and refactors the AF-flag override implementation to
match the same behavior the newly added peer-flag override
implementation has.
Signed-off-by: Pascal Mathis <mail@pascalmathis.com>
The current implementation of peer flags (e.g. shutdown, passive, ...)
only has partial support for overriding flags of a peer-group when the
peer is a member. Often settings might get lost if the user toys around
with the peer-group configuration, which can lead to disaster.
This commit introduces the same override implementation which was
previously integrated to support proper peer flag/attribute override on
the address-family level. The code is very similar and the global
attributes now use their separate state-arrays *flags_invert* and
*flags_override*.
The test suite for BGP peer attributes was extended to also check peer
global attributes, so that the newly introduced changes are covered. An
additional feature was added which allows to test an attribute with an
*interface-peer*, which can be configured by running `neighbor IF-TEST
interface`. This was introduced so that the dynamic runtime inversion of
the `extended-nexthop` flag, which is only enabled by default for
interface peers, can also be tested.
Last but not least, two small changes have been made to the current bgpd
implementation:
- The command `strict-capability-match` can now also be set on a
peer-group, it seems like this command slipped through while
implementing peer-groups in the very past.
- The macro `COND_FLAG` was introduced inside lib/zebra.h, which now
allows to either set or unset a flag based on a condition. The syntax
for using this macro is: `COND_FLAG(flag_variable, flag, condition)`
Signed-off-by: Pascal Mathis <mail@pascalmathis.com>
The labeled unicast and unicast tables have been combined
into the unicast table. Additionally we have a restriction
where if you configure labeled unicast you cannot configure
unicast. This created a bug with 'show bgp ipv4 labeled-unicast summ'
command where we were displaying NoNeg, because v4 has been intentionally
turned off.
Modify the code so that when we are looking up if we have negotiated
a capapbility we use the correct one, while still using the appropriate
table for prefix count.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
This command needs to be deprecated. It partially implements
a refusal to create multiple instances. If you do not need
multiple instances, just don't create them in the cli instead.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
This command needs to be deprecated. It sets a small variety
of options via the BGP_OPT_CONFIG_CISCO flag. Set for removal
in 1 year.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
This commit fixes all outstanding style/formatting issues as detected by
'git clang-format' or 'checkpath' for the new peer-group override
implementation, which spanned across several commits.
Signed-off-by: Pascal Mathis <mail@pascalmathis.com>
This commit fixes peer-group overrides for inverted AF flags. This
implementation is currently only being used by the three 'send-community'
flags. Commit 70ee29b4d introduced generic support for overriding AF
flags, but did not support inverted flags.
By introducing an additional array on the BGP peer structure called
'af_flags_invert' all current and future flags which should work in an
inverted way can now also be properly overridden.
The CLI commands will work exactly the same way as before, just that 'no
<command>' now sets the flag and override whereas '<command>' will unset
the flag and remove the override.
Signed-off-by: Pascal Mathis <mail@pascalmathis.com>
Problem reported due to tab completion showing all possible peers
in every vrf, but when neighbor in wrong vrf entered "no such
neighbor" is the error message. Making it slightly more clear
with "no such neighbor in the view/vrf" to clue the user that they
may have specified the wrong vrf.
Signed-off-by: Don Slice <dslice@cumulusnetworks.com>
This commit moves the command 'bgp enforce-first-as' from global BGP
instance configuration to peer/neighbor configuration, which can now be
changed by executing '[no] neighbor <neighbor> enforce-first-as'.
End users can now enforce sane first-AS checking on regular sessions
while e.g. disabling the checks on routeserver sessions, which usually
strip away their own AS number from the path.
To ensure backwards-compatibility, a migration routine was added which
automatically sets the 'enforce-first-as' flag on all configured
neighbors if the old global setting was activated. The old global
command immediately disappears after running the migration routine once.
Signed-off-by: Pascal Mathis <mail@pascalmathis.com>
The current implementation does not respect the AFI+SAFI combination of
a peer when executing a non-soft (hard) clear. An example would be the
command `clear bgp ipv4 unicast *`, which will clear all BGP peers, even
those that do not have IPv4-Unicast activated.
This commit fixes that behavior by applying the same rules to both soft
and hard clear commands, so that peers without a matching AFI+SAFI
combination will be no longer modified.
Additionally, this commit adds warning messages to all `clear bgp
[<afi>] [<safi>] <target>` commands when no matching peers with the given
AFI+SAFI combination could be found.
Both existing and new warning messages have been extended to also
mention the AFI+SAFI combination that is missing, which is more helpful
to the user than a generic expression 'No peer configured'.
Signed-off-by: Pascal Mathis <mail@pascalmathis.com>
The current implementation of building JSON output is greatly different
for large communities compared to standard communities. This is mainly
noticeable by the missing 'list' attribute, which usually offers an
array of all communities present on a BGP route.
This commit adds the missing functionality of properly returning a
'list' attribute in JSON output and also tries a similar approach like
the standard communities are using to implement this feature.
Additionally, the 'format' specifier has been completely removed from
large communities string/JSON rendering, as the official RFC8092 specifies that
there is only one canonical representation:
> The canonical representation of BGP Large Communities is three
> separate unsigned integers in decimal notation in the following
> order: Global Administrator, Local Data 1, Local Data 2. Numbers
> MUST NOT contain leading zeros; a zero value MUST be represented with
> a single zero. Each number is separated from the next by a single
> colon. For example: 64496:4294967295:2, 64496:0:0.
As the 'format' specifier has not been used/checked and only one
canonical representation exists per today, there was no reason to keep
the 'format' parameter in the function signature.
Last but not least, the struct attribute 'community_entry.config' is no
longer being used for large communities and instead 'lcommunity_str' is
being called to maintain a similar approach to standard communities.
As a side effect, this also fixed a memory leak inside 'community_entry_free'
which did not free the allocated memory for the 'config' attribute when
dealing with a large community.
Signed-off-by: Pascal Mathis <mail@pascalmathis.com>
Before this fix, both real neighbors and peer-groups were lumped
together in auto-completion and it didn't work at all for
peer-groups. This fix changes that behavior to do the right
thing.
Signed-off-by: Don Slice <dslice@cumulusnetworks.com>
In the FRR implementation of EVPN,
eBGP leaf-spine peering for EVPN is fully supported by allowing
the next hop to be propagated and not rewritten at each hop.
There are other changes also related to route import to facilitate this.
However, propagating the next hop is not correct in some cases.
Specifically, if the DC is comprised of multiple PODs
with distinct intra-POD and inter-POD VxLAN tunnels,
EVPN routes received from an adjacent POD by a border/exit leaf
must be propagated into the local POD with the next hop rewritten (to self).
Signed-off-by: Mitesh Kanjariya <mitesh@cumulusnetworks.com>
The loop over all afi's implies that these commands actually need
to loop over all afi's to check the vpn policy. We know the
appropriate afi based upon the node we are in. So just return
the correct afi to look at and then just apply it.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Prior to this fix, you could configure importing a vrf from inside
the same vrf. This can lead to unexpected behavior in the leaking
process. This fix disallows that behavior.
Ticket: CM-20539
Signed-off-by: Don Slice <dslice@cumulusnetworks.com>
