When receiving a BGP update that includes a colored extended community,
the nexthop is tracked in the bgp nexthop tracking context, but the
color is never recorded. Adding to this, the BGP route is not prevented
from being installed without hte color.
Actually, the srte color is set only when the SRTE_COLOR attribute is set.
And that attribute value is only set when an ext. community is locally
created, or an srte value is set, but not when a BGP update with a color
ext. community is received.
Fix this by setting the SRTE_COLOR attribute on this last case.
Fixes: 442e2edcfa ("bgpd: add functions related to srte_color management")
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
The ISIS_SR_LAN_BACKUP should be renamed to ISIS_SR_ADJ_BACKUP.
Fixes: 26f6acafc3 ("isisd: add support for segment routing")
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
Add SRv6 Binding SID END.B6.Encaps nh6 str to lib.
It is used to display nh6 when one uses 'show ipv6 route'.
Signed-off-by: Dmytro Shytyi <dmytro.shytyi@6wind.com>
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
In topotest, a given interface has only the ignore routes bit turned
on for IPv6 only, whereas topotest is expected to turn it on for all
address families.
> # show interface
> Interface r2-r3-eth2 is up, line protocol is up
> [..]
> flags: <UP,BROADCAST,RUNNING,MULTICAST>
> Ignore all v6 routes with linkdown
> Type: Ethernet
> [..]
This is because the only the 'default' ipv6 ignore sysctl is set to
1. Set also the /proc/sys/net/conf/<family>/default/ignore_routes_with_linkdown
flag, to have same behaviour for ipv4 and ipv6.
Fixes: 4958158787 ("tests: micronet: update infra")
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
This extends non-broadcast support to point-to-multipoint networks.
Neighbors will be explicitly configured and polled in lieu of multicast
dicovery. Toptotests and documentation updates are included.
Additionally, the ospf neighbor commands have been greatly simplified taking
advantage of DEFPY() capabilities.
The AllOSPFRouters (224.0.0.5) is still joined for non-broadcast networks
since it is joined for NBMA networks. It seems this could be removed but
it should done be in a separate commit.
Signed-off-by: Acee Lindem <acee@lindem.com>
Don't allocate subtlvs container if there's nothing to add to it. If the
container is allocated, the "sub-TLVs presence" bit is set in the TLVs
even if there's no actual sub-TLVs, what violates the RFC.
Fixes#14514.
Signed-off-by: Igor Ryzhov <iryzhov@nfware.com>
Currently bgp_path_info's are stored in reverse order
received. Sort them by the best path ordering.
This will allow for optimizations in the future on
how multipath is done.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
This topotest covers the PR-15574's coverage
where a change is not to delete neighbors when
the associated peer-group's remote-as is removed.
Ticket: #3828243
Testing:
test_bgp_peer-group.py::test_bgp_peer_group
---------------------------------------------------------------------------- live log call -----------------------------------------------------------------------------
2024-03-29 18:12:22,608 INFO: r1: checking if daemons are running
2024-03-29 18:12:22,802 INFO: r2: checking if daemons are running
2024-03-29 18:12:22,911 INFO: r3: checking if daemons are running
2024-03-29 18:12:23,015 INFO: topo: Remove bgp peer-group PG1 remote-as neighbor should be retained
2024-03-29 18:12:25,605 INFO: topo: Re-add bgp peer-group PG1 remote-as neighbor should be established
----------------------------------------------------------- generated xml file: /tmp/topotests/topotests.xml -----------------------------------------------------------
========================================================================== 2 passed in 17.63s ==========================================================================
Signed-off-by: Chirag Shah <chirag@nvidia.com>
Do not reap instead let's schedule for deletion
and let best_path_selection take care of the deletion
as it should.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
Currently evpn code calls bgp_best_selection for local
decisions for local tables to figure out what to do.
This is also pi based so let's note that the pi has
been changed before calling bgp_best_selection.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
This will allow a consistency of approach to adding/removing
pi's to from the workqueue for processing as well as properly
handling the dest->info pi list more appropriately.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
bgp_damp.c has an instance of bgp_path_info_delete is called.
Thus setting up the path info for deletion, but since it never
calls bgp_process, it can never be deleted. This means that in
a dampening situation, after a withdrawal the path_info would
stick around. Schedule the path for deletion.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
Add a new flag BGP_PATH_UNSORTED to keep track
of sorted -vs- unsorted path_info's. Add some
ability to the system to understand when that
flag is set.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
Add a debug function to allow developers to dump flags
associated with a bgp_path_info in a human readable format.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
Modify update_evpn_type5_route_entry to return a pointer to the
struct bgp_path_info modified in this function. This code
merely follows the standards used in other bgp_evpn.c code
where the update function returns the pointer to the path
info.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
The nexthop tracking never displays the prefix that
has been used in ZEBRA to resolve its nexthop. This
information will be useful if some decision has to be
taken regarding any loops, that is to say if for instance
a BGP prefix is resolved over a prefix in ZEBRA that is
exactly the same.
Store the value in bgp nexthop context, and display it.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
Command 'show ip route vrf <vrf_name> json' returns a valid json object,
however if instead of <vrf_name> we specify 'all', we get an invalid json
object, like:
{//vrf1 routes}{//vrf2 routes}{vrf3 routes}
After the fix:
{"vrf1":{//vrf1 routes},"vrf2:{//vrf2 routes},"vrf3":{//vrf3 routes}}
Which is a valid json object, that can be parsed effectively using built-in
modules. The rest of the commands remains unaffected and behave the same.
Signed-off-by: Piotr Suchy <psuchy@akamai.com>
The asan memory leak has been detected:
> Direct leak of 16 byte(s) in 1 object(s) allocated from:
> #0 0x7f9066dadd28 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xded28)
> #1 0x7f9066779b5d in qcalloc lib/memory.c:105
> #2 0x556d6ca527c2 in vpn_leak_zebra_vrf_sid_update_per_af bgpd/bgp_mplsvpn.c:389
> #3 0x556d6ca530e1 in vpn_leak_zebra_vrf_sid_update bgpd/bgp_mplsvpn.c:451
> #4 0x556d6ca64b3b in vpn_leak_postchange bgpd/bgp_mplsvpn.h:311
> #5 0x556d6ca64b3b in vpn_leak_postchange_all bgpd/bgp_mplsvpn.c:3751
> #6 0x556d6cb9f116 in bgp_zebra_process_srv6_locator_chunk bgpd/bgp_zebra.c:3337
> #7 0x7f906685a6b6 in zclient_read lib/zclient.c:4490
> #8 0x7f9066826a32 in event_call lib/event.c:2011
> #9 0x7f906675c444 in frr_run lib/libfrr.c:1217
> #10 0x556d6c980d52 in main bgpd/bgp_main.c:545
> #11 0x7f9065784c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86)
Fix this by freeing the previous memory chunk.
Fixes: b72c9e1475 ("bgpd: cli for SRv6 SID alloc to redirect to vrf (step4)")
Fixes: 527588aa78 ("bgpd: add support for per-VRF SRv6 SID")
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
If we receive an attribute that is handled by bgp_attr_malformed(), use
treat-as-withdraw behavior for unknown (or missing to add - if new) attributes.
Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>
Currently BGP attempts to send route change information
to it's peers *before* the route is installed into zebra.
This creates a bug in suppress-fib-pending in the following
scenario:
a) bgp suppress-fib-pending and bgp has a route with
2 way ecmp.
b) bgp receives a route withdraw from peer 1. BGP
will send the route to zebra and mark the route as
FIB_INSTALL_PENDING.
c) bgp receives a route withdraw from peer 2. BGP
will see the route has the FIB_INSTALL_PENDING and
not send the withdrawal of the route to the peer.
bgp will then send the route deletion to zebra and
clean up the bgp_path_info's.
At this point BGP is stuck where it has not sent
a route withdrawal to downstream peers.
Let's modify the code in bgp_process_main_one to
send the route notification to zebra first before
attempting to announce the route. The route withdrawal
will remove the FIB_INSTALL_PENDING flag from the dest
and this will allow group_announce_route to believe
it can send the route withdrawal.
For the master branch this is ok because the recent
backpressure commits are in place and nothing is going
to change from an ordering perspective in that regards.
Ostensibly this fix is also for operators of Sonic and
will be backported to the 8.5 branch as well. This will
change the order of the send to peers to be after the
zebra installation but sonic users are using suppress-fib-pending
anyways so updates won't go out until rib ack has been
received anyways.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
When BGP has been asked to wait for FIB installation, on route
removal a return call is likely to not have the dest since BGP
will have cleaned up the node, entirely. Let's just note that
the prefix cannot be found if debugs are turned on and move on.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
Without this patch, we always set the BGP Prefix SID attribute flag without
checking if it's malformed or not. RFC8669 says that this attribute MUST be discarded.
Also, this fixes the bgpd crash when a malformed Prefix SID attribute is received,
with malformed transitive flags and/or TLVs.
Reported-by: Iggy Frankovic <iggyfran@amazon.com>
Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>
