This patch adds transpostion_offset and transposition_len to bgp_sid_info,
and transposes SID only at bgp_zebra_announce.
Signed-off-by: Ryoga Saito <ryoga.saito@linecorp.com>
Current implementation of SRv6 SID allocation algorithm sets most least
2 bytes. But, according to RFC8986, function bits is located in the next
to locator. New allocation alogirithm respects this format.
Signed-off-by: Ryoga Saito <contact@proelbtn.com>
This commit add cil to configure BGP SRv6-VPN sid allocation.
Almost mechanism are based on BGP MPLS-VPN.
User can allocate and export sid with using following config.
Then bgpd try to allocate new SID to redirect vpn to vrf using
SRv6 localsid End.DT4/DT6. Currently linux kernel will regect
End.DT4 route install due to no-implementation.
(at-least today's FRR's ci kernel.)
So now we only supports BGP SRv6-VPNv6.
router bgp 1
segment-routing srv6
locator loc1
!
address-family ipv6 vpn
exit-address-family
!
router bgp 1 vrf vrf10
address-family ipv6 unicast
sid vpn export 1 !!(option1)!!
sid vpn export auto !!(option2)!!
exit-address-family
!
Signed-off-by: Hiroki Shirokura <slank.dev@gmail.com>
If a vrf is exporting to a vpn table and/or importing to a vpn
table then it is assumed t be a MPLS VPN vrf.
Signed-off-by: Pat Ruddy <pat@voltanet.io>
This is the bulk part extracted from "bgpd: Convert from `struct
bgp_node` to `struct bgp_dest`". It should not result in any functional
change.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
two bgp vrf instance has vrf route leak configured,
when a source vrf x is deleted, its leaked routes are cleaned
up from the destination and vpn table.
With this change when a source bgp instance is reconfigured,
export its routes back to destination vrfs where it is configured
as leak.
Ticket:CM-20534 CM-24484
Reviewed By:
Testing Done:
configure vrf leak between two vrf intances,
delete and readd source vrf and checked its routes
exported to vpn table and leaked vrfs table.
Signed-off-by: Chirag Shah <chirag@cumulusnetworks.com>
A VRF leak is configured between two vrfs,
bgp VRF X and VRF Y.
When a bgp VRF X is removed, unimport bgp VRF X routes
from VPN and VRF Y.
If VRF X is also importing from bgp VRF Y, remove X from
export list of Y and do required route cleanup.
Ticket:CM-20534 CM-24484
Reviewed By:
Testing Done:
Before deleteing vrf1002:
nl1# show ip route vrf vrf1003 9.9.2.4/32
Routing entry for 9.9.2.4/32
Known via "bgp", distance 200, metric 0, vrf vrf1003, best
Last update 00:04:51 ago
* 200.2.8.2, via swp1.2(vrf vrf1002)
* 200.2.9.2, via swp2.2(vrf vrf1002)
* 200.2.10.2, via swp3.2(vrf vrf1002)
Instance vrf1003:
This VRF is importing IPv4 Unicast routes from the following VRFs:
vrf1002
Import RT(s): 6.0.2.9:2
This VRF is exporting IPv4 Unicast routes to the following VRFs:
vrf1002
RD: 6.0.3.9:3
Export RT: 6.0.3.9:3
After deleting vrf1002:
nl1(config)# no router bgp 64902 vrf vrf1002
nl1# show ip route vrf vrf1003 9.9.2.4/32
Routing entry for 9.9.2.4/32
Known via "bgp", distance 20, metric 0, vrf vrf1003, best
Last update 00:00:32 ago
* 200.3.8.2, via swp1.3
* 200.3.9.2, via swp2.3
* 200.3.10.2, via swp3.3
Instance vrf1003:
This VRF is importing IPv4 Unicast routes from the following VRFs:
vrf1002
Import RT(s):
This VRF is not exporting IPv4 Unicast routes to any other VRF
nl1# show bgp ipv4 vpn
No BGP prefixes displayed, 0 exist
Readd vrf1002:
points back to source vrf
nl1# show ip route vrf vrf1003 9.9.2.4/32
Routing entry for 9.9.2.4/32
Known via "bgp", distance 200, metric 0, vrf vrf1003, best
Last update 00:00:21 ago
* 200.2.8.2, via swp1.2(vrf vrf1002)
* 200.2.9.2, via swp2.2(vrf vrf1002)
* 200.2.10.2, via swp3.2(vrf vrf1002)
Signed-off-by: Chirag Shah <chirag@cumulusnetworks.com>
A router-id change that isn't explicitly configured (a change
from zebra, for example) should not replace a configured vpn
RD/RT.
Signed-off-by: Mark Stapp <mjs@voltanet.io>
VRF route leak auto RD and RT uses router-id,
when a router-id changes for a bgp instance, change
associated vpn RD and RT values. Withdraw
old RD/RT routes from vpn and with new
RD/RT values advertise new routes to vpn.
One of the sceanrio is restarting frr:
A router-id change may not have reflected
for bgp vrf instance X, while import vrf X
under bgp vrf instance Y.
Once router-id changes for bgp VRF X,
change RD and RTs from export VRF and
imported VRFs. Readvertise routes with new
values to VPN.
Ticket:CM-24149
Reviewed By:CCR-8394
Testing Done:
Validated via configured multiple bgp VRF instances
and enable route leaks among them, restart frr
and all instance received correct RD and RT values.
Checked 'show bgp vrf all ipv4 unicast route-leak'
and vpn table 'show bgp ipv4 vpn all' output.
Signed-off-by: Chirag Shah <chirag@cumulusnetworks.com>
Refine check that looks for VPN routes imported into a VRF because
a VRF can have other imported routes too like IPv4 and IPv6 unicast
routes sourced from EVPN type-2 and type-5 routes.
Signed-off-by: Vivek Venkatraman <vivek@cumulusnetworks.com>
Reviewed-by: Anuradha Karuppiah <anuradhak@cumulusnetworks.com>
Reviewed-by: Donald Sharp <sharpd@cumulusnetworks.com>
A non-imported route or a non-VPN imported route is a candidate to be
exported into the VPN routing table for leaking to other BGP instances
or advertisement into BGP/MPLS VPN. The former is a local or learnt
IPv4 or IPv6 route. The latter is an IPv4 or IPv6 route that is based
on a received EVPN type-2 or type-5 route.
Implement a function to specify if a route can be exported into VPN
and use in the appropriate places.
Signed-off-by: Vivek Venkatraman <vivek@cumulusnetworks.com>
Reviewed-by: Anuradha Karuppiah <anuradhak@cumulusnetworks.com>
Reviewed-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>
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>
Problem reported that when systemctl restart networking or switchd
performed, not all imported prefixes were successfully restored.
Ticket: CM-21684
Signed-off-by: Don Slice <dslice@cumulusnetworks.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>
Note that when we are importing vrf EVA into vrf DONNA
we must keep track of all the vrfs EVA is being
exported into and we must also keep track of all the vrf's
that DONNA is receiving data from as well.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
Implement fixes for route leaking between VRFs through BGP, especially for
the scenario where routes are leaked from a VRF X to multiple other VRFs.
This include making sure that import and export happen via the global VPN
table, setting RD correctly and proper handling for multiple import/export.
Ticket: CM-20256
Signed-off-by: Vivek Venkatraman <vivek@cumulusnetworks.com>
Reviewed-by: Donald Sharp <sharpd@cumulusnetworks.com>
add the `import vrf XXXX` command
router bgp 4 vrf DONNA
<config>
!
router bgp 4 vrf EVA
<config>
address-family ipv4 uni
import vrf DONNA
!
!
This command will allow for vrf EVA to specify that it would like
to receive the routes from vrf DONNA into it's table.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
given a configuration such as this:
router bgp 7777 vrf A
address-family ipv4 unicast
route-map vpn import FOO
import vpn
or this:
router bgp 7777 vrf A
address-family ipv4 unicast
rd vpn export 1:3
rt vpn export 1:100
route-map vpn export FOO
export vpn
Previous code allowed leaking if the named FOO route-map was not defined.
Since the configuration is logically incomplete, if a route-map is named
for "vpn export" or "vpn import" but is not defined, leaking should not
occur until the route-map is defined.
This changeset implements the correct behavior.
Signed-off-by: G. Paul Ziemba <paulz@labn.net>
Add support for CLI "auto" keyword in vrf->vpn export label:
router bgp NNN vrf FOO
address-family ipv4 unicast
label vpn export auto
exit-address-family
Signed-off-by: G. Paul Ziemba <paulz@labn.net>
The following types are nonstandard:
- u_char
- u_short
- u_int
- u_long
- u_int8_t
- u_int16_t
- u_int32_t
Replace them with the C99 standard types:
- uint8_t
- unsigned short
- unsigned int
- unsigned long
- uint8_t
- uint16_t
- uint32_t
Signed-off-by: Quentin Young <qlyoung@cumulusnetworks.com>
This commit is relying on bgp vpn-policy. It is needed to configure
several bgp vrf instances, and in each of the bgp instance, configure
the following command under address-family ipv4 unicast node:
[no] rt redirect import RTLIST
Then, a function is provided, that will parse the BGP instances.
The incoming ecommunity will be compared with the configured rt redirect
import ecommunity list, and return the VRF first instance of the matching
route target.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
- vpn_leak_to_vpn_active(): check instance type
- vpn_leak_prechange(): qualify with test for active
- vpn_leak_postchange(): remove duplicated call to
vpn_leak_from_vrf_update_all()
- bgp_vty.c: Avoid null-pointer dereference for command "no rt vpn import"
Signed-off-by: G. Paul Ziemba <paulz@labn.net>
PR #1739 added code to leak routes between (default VRF) VPN safi and unicast RIBs in any VRF. That set of changes included temporary CLI including vpn-policy blocks to specify RD/RT/label/&c. After considerable discussion, we arrived at a consensus CLI shown below.
The code of this PR implements the vpn-specific parts of this syntax:
router bgp <as> [vrf <FOO>]
address-family <afi> unicast
rd (vpn|evpn) export (AS:NN | IP:nn)
label (vpn|evpn) export (0..1048575)
rt (vpn|evpn) (import|export|both) RTLIST...
nexthop vpn (import|export) (A.B.C.D | X:X::X:X)
route-map (vpn|evpn|vrf NAME) (import|export) MAP
[no] import|export [vpn|evpn|evpn8]
[no] import|export vrf NAME
User documentation of the vpn-specific parts of the above syntax is in PR #1937
Signed-off-by: G. Paul Ziemba <paulz@labn.net>
- add "debug bgp vpn label" CLI
- improved debug messages for "debug bgp bestpath"
- send vrf label to zebra after zebra informs bgpd of vrf_id
- withdraw vrf_label from zebra if zebra informs bgpd that vrf_id is disabled
Signed-off-by: G. Paul Ziemba <paulz@labn.net>
Turns out we had 3 different ways to define labels
all of them overlapping with the same meanings.
Consolidate to 1. This one choosen is consistent
naming wise with what the *bsd and linux kernels
use.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
BGP Route Distinguisher (RD) handling is common for different flavors
of BGP VPNs such as BGP/MPLS IP VPNs (RFC 4364) and BGP EVPNs (RFC 7432).
Separate out the RD handling functions into its own files.
Note: No functional change introduced with this commit.
Signed-off-by: Vivek Venkatraman <vivek@cumulusnetworks.com>
Reviewed-by: Donald Sharp <sharpd@cumulusnetworks.com>
Signed-off-by: Daniel Walton <dwalton@cumulusnetworks.com>
- All ipv4 labeled-unicast routes are now installed in the ipv4 unicast
table. This allows us to do things like take routes from an ipv4
unicast peer, allocate a label for them and TX them to a ipv4
labeled-unicast peer. We can do the opposite where we take routes from
a labeled-unicast peer, remove the label and advertise them to an ipv4
unicast peer.
- Multipath over a labeled route and non-labeled route is not allowed.
- You cannot activate a peer for both 'ipv4 unicast' and 'ipv4
labeled-unicast'
- The 'tag' variable was overloaded for zebra's route tag feature as
well as the mpls label. I added a 'mpls_label_t mpls' variable to
avoid this. This is much cleaner but resulted in touching a lot of
code.
The FSF's address changed, and we had a mixture of comment styles for
the GPL file header. (The style with * at the beginning won out with
580 to 141 in existing files.)
Note: I've intentionally left intact other "variations" of the copyright
header, e.g. whether it says "Zebra", "Quagga", "FRR", or nothing.
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
This patch introduces show show bgp evpn commands to dump
NLRI entries configured or received on BGP, related to EVPN
New command introduced is the following:
show [ip] bgp l2vpn evpn [all | rd <rd name> ] [overlay]
Like for MPLS, similar set of commands is added for EVPN:
show [ip] bgp l2vpn evpn [all|rd <RDNAME>]
show [ip] bgp l2vpn evpn all neighbor <NEIGHBOR> routes
show [ip] bgp l2vpn evpn all neighbor <NEIGHBOR> advertised-routes
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
The commit is removed duplicated command show ip bgp ipv4|ipv6 enca|vpn
command that is conflicting between bgp_route.c and
bgp_mplsvpn.c/bgp_encap.c files. The fix is integrating the call to
specific mpls or encap settings from inside bgp_show_route() function.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
