If we attempt to register nexthops before we have the zebra
connection, they will not be installed. After we have noticed
that we are up, re-install them.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Allow some debug notification when we are unable to talk
to zebra due to the connection not being there yet.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Add the '[no] flood <disable|head-end-replication>' command
to the l2vpn evpn afi/safi sub commands for bgp. This command
when entered as 'flood disable' will turn off type 3 route
generation for the transmittal of the type 3 route necessary
for BUM replication on the remote VTEP. Additionally it will
turn off the BUM handling via the new zebra command,
ZEBRA_VXLAN_FLOOD_CONTROL.
Signed-off-by: Vivek Venkatraman <vivek@cumulusnetworks.com>
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Allow the modification of whether or not we will allow
BUM flooding on the vxlan bridge. To do this allow
the upper level protocol to specify via the ZEBRA_VXLAN_FLOOD_CONTROL
zapi message.
If flooding is disabled then BUM traffic will not be forwarded
to other VTEP's.
Signed-off-by: Vivek Venkatraman <vivek@cumulusnetworks.com>
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.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>
In bgp if we have not configured bgp we were ignoring
interface based callbacks. Leading to states where
we may not be processing interface information.
Leading to states where we do not actually keep
ifp data. As an example:
Suppose vrf A and vrf B. A has interface swp1.
At the same time we only have a `router bgp 9 vrf B`
When we received the callback for moving swp1
from vrf A to vrf B we were not processing the
move at all and BGP would not consider the interface
part of vrf B at all.
This commit makes bgp pay attention to interface
events irrelevant if bgp is using that vrf. This
is now consistent with how the lib/if* expects
to work and the rest of the daemons in FRR.
Signed-off-by: Donald Sharp <sharpd@cumulsnetworks.com>
Corrections so that the BGP daemon can work with the label manager properly
through a label-manager proxy. Details:
- Correction so the BGP daemon behind a proxy label manager gets the range
correctly (-I added to the BGP daemon, to set the daemon instance id)
- For the BGP case, added an asynchronous label manager connect command so
the labels get recycled in case of a BGP daemon reconnection. With this,
BGPd and LDPd would behave similarly.
Signed-off-by: F. Aragon <paco@voltanet.io>
When using `no bgp fast-external-failover` and a interface moves
from one vrf into another we would not fully process the change.
Fix this code path.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
The peer->nexthop.ifp pointer must be set when parsing the
attributes in bgp_mp_reach_parse, notice this
and fail gracefully.
Rework bgp_nexthop_set to remove the HAVE_CUMULUS and to
fail the nexthop_set when we have a zebra connection and
no ifp pointer, as that not havinga zebra connection and
no ifp pointer is legal.
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>
Implement procedures similar to what is specified in
https://tools.ietf.org/html/draft-malhotra-bess-evpn-irb-extended-mobility
in order to support extended mobility scenarios in EVPN. These are scenarios
where a host/VM move results in a different (MAC,IP) binding from earlier.
For example, a host with an address assignment (IP1, MAC1) moves behind a
different PE (VTEP) and has an address assignment of (IP1, MAC2) or a host
with an address assignment (IP5, MAC5) has a different assignment of (IP6,
MAC5) after the move. Note that while these are described as "move" scenarios,
they also cover the situation when a VM is shut down and a new VM is spun up
at a different location that reuses the IP address or MAC address of the
earlier instance, but not both. Yet another scenario is a MAC change for an
attached host/VM i.e., when the MAC of an attached host changes from MAC1 to
MAC2. This is necessary because there may already be a non-zero sequence
number associated with MAC2. Also, even though (IP, MAC1) is withdrawn before
(IP, MAC2) is advertised, they may propagate through the network differently.
The procedures continue to rely on the MAC mobility extended community
specified in RFC 7432 and already supported by the implementation, but
augment it with a inheritance mechanism that understands the relationship
of the host MACIP (ARP/neighbor table entry) to the underlying MAC (MAC
forwarding database entry). In FRR, this relationship is understood by the
zebra component which doubles as the "host mobility manager", so the MAC
mobility sequence numbers are determined through interaction between bgpd
and zebra.
Signed-off-by: Vivek Venkatraman <vivek@cumulusnetworks.com>
Reviewed-by: Donald Sharp <sharpd@cumulusnetworks.com>
Reviewed-by: Anuradha Karuppiah <anuradhak@cumulusnetworks.com>
Because one flowspec entry can create 1-N bgp pbr entries, the list is
now updated and visible. Also, because the bgp_extra structure is used,
this list is flushed when the bgp_extra structure is deleted.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.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>
The flowspec fragment attribute is taken into account to be pushed in
BGP policy routing entries. Valid values are enumerate list of 1, 2, 4,
or 8 values. no combined value is supported yet.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
The rearrangement of where the decision point of
filling in the aggregate information, must have allowed
SA to find a path of code where we may use ifindex uninitialized.
While I don't think this is possible to happen, make this issue
go away.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
The aggregate-address command is not creating the null0
route. This got lost somewhere in the last year or so.
Add this ability back for BGP route installs into
zebra.
We need this aggregate route installed into the rib
because we are drawing this traffic to us irrelevant
of the number of routes we do have for that prefix.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Sometimes at startup, BGP Flowspec may be allocated a routing table
identifier not in the range of the predefined table range.
This issue is due to the fact that BGP peering goes up, while the BGP
did not yet retrieve the Table Range allocator.
The fix is done so that BGP PBR entries are not installed while
routing table identifier range is not obtained. Once the routing table
identifier is obtained, parse the FS entries and check that all selected
entries are installed, and if not, install it.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
By default, some debug traces were displayed. Those pbr traces are
hidden with 'debug bgp zebra' command.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
policy routing is configurable via address-family ipv4 flowspec
subfamily node. This is then possible to restrict flowspec operation
through the BGP instance, to a single or some interfaces, but not all.
Two commands available:
[no] local-install [IFNAME]
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
Once PBR rules installed, an information is printed in the main
show bgp ipv4 flowspec detail information.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
Those 3 fields are read and written between zebra and bgpd.
This permits extending the ipset_entry structure.
Combinatories will be possible:
- filtering with one of the src/dst port.
- filtering with one of the range src/ range dst port
usage of src or dst is exclusive in a FS entry.
- filtering a port or a port range based on either src or dst port.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
When rule add transaction is sent from bgpd to zebra, the reference
context must not be incremented while the confirmation message of
install has not been sent back; unless if the transaction failed to be
sent.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
The debugging message in charge of showing if the route is added or
witdrawn is changed accordingly to reflect this status.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
