Replace custom implementation or call to ipaddr_isset with a call to
ipaddr_is_zero.
ipaddr_isset is not fully correct, because it's fine to have some
non-zero bytes at the end of the struct in case of IPv4 and the function
doesn't allow that.
Signed-off-by: Igor Ryzhov <iryzhov@nfware.com>
When setting maximum-prefix-out on peer-group, the applied value on
member is 0.
Fix usage of maximum-prefix-out on peer-group.
The peer_maximum_prefix_out_(un)set functions are derived from
peer_maximum_prefix_(un)set.
Fixes: fde246e835 ("bgpd: Add an option to limit outgoing prefixes")
Signed-off-by: Louis Scalbert <louis.scalbert@6wind.com>
Test the ability to use the following configure command with a Y value:
no neighbor X.X.X.X maximum-prefix-out Y
Signed-off-by: Louis Scalbert <louis.scalbert@6wind.com>
Specifying a number is not possible with command no neighbor X.X.X.X
maximum-prefix-out
> frr(config-router-af)# no neighbor 192.168.1.2 maximum-prefix-out 1
> % Unknown command: no neighbor 192.168.1.2 maximum-prefix-out 1
This patch allows it.
Signed-off-by: Louis Scalbert <louis.scalbert@6wind.com>
vrf_disable is always called first before
vrf_delete. The rnh_table and rnh_table_multicast tables
are already deleted as part of vrf_disable. No need
to do it again.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
This PR will include if the area is NSSA in the output of "show ipv6 ospf"
r2# show ipv6 ospf
...
Area 0.0.0.0
Number of Area scoped LSAs is 8
Interface attached to this area: r2-eth1
SPF last executed 20.46717s ago
Area 0.0.0.1[Stub]
Number of Area scoped LSAs is 9
Interface attached to this area: r2-eth0
SPF last executed 20.46911s ago
Area 0.0.0.2[NSSA]
Number of Area scoped LSAs is 14
Interface attached to this area: r2-eth2
SPF last executed 20.46801s ago
Signed-off-by: ckishimo <carles.kishimoto@gmail.com>
Introduces a topotest to validate proper AS-Path manipulation when using
"neighbor ... remove-private-AS".
Signed-off-by: Trey Aspelund <taspelund@nvidia.com>
In situations where remove-private-AS is configured for eBGP peers
residing in a private ASN, the peer's ASN was not being retained
in the AS-Path which can allow loops to occur. This was addressed
in a prior commit but it only addressed cases where the "replace-AS"
keyword was configured.
This commit ensures we retain the peer's ASN when using
"remove-private-AS" for eBGP peers in a private ASN regardless of other
keywords.
Setup:
=========
router bgp 4200000002
neighbor enp1s0 interface v6only remote-as external
neighbor enp6s0 interface v6only remote-as external
!
address-family ipv4 unicast
neighbor enp6s0 remove-private-AS
exit-address-family
ub18# show ip bgp sum | include 420000
BGP router identifier 100.64.0.111, local AS number 4200000002 vrf-id 0 <<<<< local asn 4200000002
ub20(enp1s0) 4 4200000001 22 22 0 0 0 00:00:57 1 1
ub20(enp6s0) 4 4200000001 21 22 0 0 0 00:00:57 0 1 <<<< peer asn 4200000001
ub18# show ip bgp | include 0.2
Default local pref 100, local AS 4200000002
*> 100.64.0.2/32 enp1s0 0 0 4200000001 4200000004 4200000005 4200000001 i
Before ("remote-private-AS" only):
=========
ub18# show ip bgp neighbors enp6s0 advertised-routes | include 100.64.0.2
*> 100.64.0.2/32 :: 0 i <<<<< empty as-path, no way to prevent loop
After ("remote-private-AS" only):
=========
ub18# show ip bgp neighbors enp6s0 advertised-routes | include 100.64.0.2
*> 100.64.0.2/32 :: 0 4200000001 4200000001 i <<<< retain peer's asn, breaks loop
Ticket: 2857047
Signed-off-by: Trey Aspelund <taspelund@nvidia.com>
Opaque data takes up a lot of memory when there are a lot of routes on
the box. Given that this is just a cosmetic info, I propose to disable
it by default to not shock people who start using FRR for the first time
or upgrades from an old version.
Fixes#10101.
Signed-off-by: Igor Ryzhov <iryzhov@nfware.com>
XPATH_MAXLEN denotes the maximum length of an XPATH. It does not make
sense to allocate a buffer intended to contain an XPATH with a size
larger than the maximum allowable size of an XPATH. Consequently this PR
removes buffers that do this. Prints into these buffers are now checked
for overflow.
Signed-off-by: Quentin Young <qlyoung@nvidia.com>
VRF name should not be printed in the config since 574445ec. The update
was done for NB config output but I missed it for regular vty output.
Signed-off-by: Igor Ryzhov <iryzhov@nfware.com>
```
exit1-debian-11(config-router)# neighbor 192.168.100.3 remote-as external
exit1-debian-11(config-router)# do sh run | include extended
exit1-debian-11(config-router)# neighbor 192.168.100.3 capability extended-nexthop
exit1-debian-11(config-router)# do sh run | include extended
neighbor 192.168.100.3 capability extended-nexthop
exit1-debian-11(config-router)# no neighbor 192.168.100.3 capability extended-nexthop
exit1-debian-11(config-router)# do sh run | include extended
exit1-debian-11(config-router)# neighbor eth0 interface remote-as external
exit1-debian-11(config-router)# do sh run | include extended
exit1-debian-11(config-router)# neighbor eth0 capability extended-nexthop
exit1-debian-11(config-router)# do sh run | include extended
exit1-debian-11(config-router)# no neighbor eth0 capability extended-nexthop
exit1-debian-11(config-router)# do sh run | include extended
no neighbor eth0 capability extended-nexthop
exit1-debian-11(config-router)#
```
Signed-off-by: Donatas Abraitis <donatas.abraitis@gmail.com>
The current maximum-prefix-out topo-test starts a configuration with a
maximum-prefix-out.
Test the application of new maximum-prefix-out value without clearing
the neighbor.
Signed-off-by: Louis Scalbert <louis.scalbert@6wind.com>
Abstract:
- The command "neighbor PEER maximum-prefix-out NUMBER" cannot be applied
without clearing the BGP neighbor.
- Apply the maximum-prefix-out value as soon as it is modified without
clearing the neighbor.
subgroup_update_packet() and subgroup_withdraw_packet() respectively
manages the announcement and withdrawal BGP message to the peer.
subgrp->scount counter counts the number of sent prefixes.
Before the patch, the maximum out prefix limitation was applied in
subgroup_update_packet() in order that subgrp->scount never exceeds the
limit. Setting a limit inferior to the effective number of sent prefix
did not result in sending any withdrawal message to reduce the number of
sent prefixes. Without clearing the BGP neighbor, the limitation only
applied to the announcement of new prefixes when the limitation was
over.
With the patch, the limitation is checked in subgroup_announce_check().
The function is intended to say whether a prefix has to be announced in
regards to the prefix-list, route-map... Now when a maximum-prefix-out
value is changed/removed, the neighbor AFI/SAFI table is re-parsed in
the same way as for the application of route-map, prefix-lists...
Signed-off-by: Louis Scalbert <louis.scalbert@6wind.com>
Take into account the maximum-prefix-out value when calculating the
update-group hash.
Fixes: fde246e835 ("bgpd: Add an option to limit outgoing prefixes")
Signed-off-by: Louis Scalbert <louis.scalbert@6wind.com>
Add a thread_ignore_late_timer(struct thread *thread) function
that allows thread.c to ignore when timers are late to the party.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
If a thread timer should have popped CPU_CONSUMED_CHECK
seconds in the past, and we are only handling it now. Consider
the thread starved and notice it.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
