There are two ways of iterating over nexthops of a given
route entry.
- Either only the main nexthop are taken into account
(which is the case today when attempting to install an
LSP entry on a BGP connected labeled route.
- Or by taking into account nexthops that are resolved
and linked in nexthop->resolved of the previous nexthop
which has RECURSIVE flag set. This second case has to be
taken into account in the case where recursive routes may
be used to install an LSP entry.
Introduce a new API in nexthop that will parse over the
appropriate nexthop, if the nexthop-resolution flag is turned
on or not on the given VRF.
Use that API in the lsp_install() function so as to walk
over the appropriate nexthops.
Co-developed-by: Dmytro Shytyi <dmytro.shytyi@6wind.com>
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
Signed-off-by: Dmytro Shytyi <dmytro.shytyi@6wind.com>
Upon reconfiguring nexthop-resolution updates, update the
lsp entries accordingly.
If fec nexthop-resolution becomes true, then call again
fec_change_update_lsp() for each fec entry available.
If fec nexthop-resolution becomes false, then call again
fec_change_update_lsp() for each fec entry available, and
if the update fails, uninstall any lsp related with the fec
entry. In the case lsp_install() and no lsp entry could be
created or updated, then consider this call as a failure, and
return -1.
Co-developed-by: Dmytro Shytyi <dmytro.shytyi@6wind.com>
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
Signed-off-by: Dmytro Shytyi <dmytro.shytyi@6wind.com>
Fixes:
zebra/zebra_netns_notify.c: In function 'zebra_ns_ready_read':
zebra/zebra_netns_notify.c:266:40: error: implicit declaration of function 'basename' [-Wimplicit-function-declaration]
266 | if (strmatch(VRF_DEFAULT_NAME, basename(netnspath))) {
| ^~~~~~~~
Fixed by including libgen.h, then since basename may modify its
parameter, allocate a copy on the stack, using strdupa, and pass the
temporary string to basename.
According to the man page for basename:
With glibc, one gets the POSIX version of basename() when
<libgen.h> is included, and the GNU version otherwise.
The POSIX version of basename may modify the contents of path,
so we should to pass a copy when calling this function.
[1] https://man7.org/linux/man-pages/man3/basename.3.html
Signed-off-by: Georgi Valkov <gvalkov@gmail.com>
The 'show running-config' does not display the ipv6 source address
when a locator is not configured. Fix this by systematically displaying
the ipv6 source address.
Fixes: 6a0956169b ("zebra: Add encap source address to SRv6 config write function")
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
Currently zebra does not deny the routes if `ip protocol <proto> route-map
FOO`
commmand is configured with reference to an undefined route-map (FOO in
this case).
However, on FRR restart, in zebra_route_map_check() routes get denied
if route-map name is available but the route-map is not defined. This
change was introduced in fd303a4ba1.
Fix:
When `ip protocol <proto> route-map FOO` CLI is configured with reference to an
undefined route-map FOO, let the processing in ip_protocol_rm_add() and
ip_protocol_rm_del() go through so that zebra can deny the routes instead
of simply returning. This will result in consistent behavior.
Testing Done:
Before fix:
```
spine-1# configure
spine-1(config)# ip protocol bgp route-map rmap7
root@spine-1:mgmt:/var/home/cumulus# vtysh -c "show run" | grep rmap7
ip protocol bgp route-map rmap7
root@spine-1:mgmt:/var/home/cumulus#
spine-1(config)# do show ip route
Codes: K - kernel route, C - connected, S - static, R - RIP,
O - OSPF, I - IS-IS, B - BGP, E - EIGRP, N - NHRP,
T - Table, A - Babel, D - SHARP, F - PBR, f - OpenFabric,
Z - FRR,
> - selected route, * - FIB route, q - queued, r - rejected, b - backup
t - trapped, o - offload failure
C>* 27.0.0.1/32 is directly connected, lo, 02:27:45
B>* 27.0.0.3/32 [20/0] via fe80::202:ff:fe00:21, downlink_1, weight 1, 02:27:35
B>* 27.0.0.4/32 [20/0] via fe80::202:ff:fe00:29, downlink_2, weight 1, 02:27:40
B>* 27.0.0.5/32 [20/0] via fe80::202:ff:fe00:31, downlink_3, weight 1, 02:27:40
B>* 27.0.0.6/32 [20/0] via fe80::202:ff:fe00:39, downlink_4, weight 1, 02:27:40
```
After fix:
```
spine-1(config)# ip protocol bgp route-map route-map67
spine-1(config)# do show ip route
Codes: K - kernel route, C - connected, S - static, R - RIP,
O - OSPF, I - IS-IS, B - BGP, E - EIGRP, N - NHRP,
T - Table, A - Babel, D - SHARP, F - PBR, f - OpenFabric,
Z - FRR,
> - selected route, * - FIB route, q - queued, r - rejected, b - backup
t - trapped, o - offload failure
C>* 27.0.0.1/32 is directly connected, lo, 00:35:03
B 27.0.0.3/32 [20/0] via fe80::202:ff:fe00:21, downlink_1 inactive, weight 1, 00:34:58
B 27.0.0.4/32 [20/0] via fe80::202:ff:fe00:29, downlink_2 inactive, weight 1, 00:34:57
B 27.0.0.5/32 [20/0] via fe80::202:ff:fe00:31, downlink_3 inactive, weight 1, 00:34:57
B 27.0.0.6/32 [20/0] via fe80::202:ff:fe00:39, downlink_4 inactive, weight 1, 00:34:58
spine-1(config)#
root@spine-1:mgmt:/var/home/cumulus# ip route show
root@spine-1:mgmt:/var/home/cumulus#
```
Signed-off-by: Pooja Jagadeesh Doijode <pdoijode@nvidia.com>
Configured with "mpls label bind 1.1.1.1/32 explicit-null", the running
configuration is:
```
!
mpls label bind 1.1.1.1/32 IPv4 Explicit Null
!
```
After this commit, the running configuration is:
```
!
mpls label bind 1.1.1.1/32 explicit-null
!
```
And add the support for the "no" form:
```
anlan(config)# mpls label bind 1.1.1.1/32 explicit-null
anlan(config)# no mpls label bind 1.1.1.1/32 explicit-null
```
Signed-off-by: anlan_cs <anlan_cs@tom.com>
* Starting from version DPDK 22.11 we have API changes:
The rte_driver and rte_device objects are now opaque and must be manipulated through added accessors.
We need to update Zebra DPDK sources to DPDK version >=22.11
* Fix clang-format
Signed-off-by: EasyNet <devel@easynet.dev>
The zebra_nexthop_vty_helper() and zebra_nexthop_json_helper()
functions could be very helpful to display nexthop information
from whatever daemon.
Move the core function in the nexthop_vty_helper() and the
nexthop_json_helper() function. The zebra API call remains
unchanged.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
Include the prefix source address when set by a route-map in
show output for routes, in various formats.
Add some debugs when encoding netlink route messages with
a source address.
Signed-off-by: Mark Stapp <mjs@cisco.com>
If you had a situation where an operator turned on
ospfd with snmp but not ospf6d and agentx was configured
then you get into a situation where ospf6d would complain
that the config for agentx did not exist. Let's modify
the code to allow this situation to happen.
Fixes: #15896
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
The fpm code path for the dplane_fpm_nl module was improperly
encoding the multipath nexthop data for vxlan type routes.
Move this into the embedded nexthop encoding where it belongs.
This change makes it so that the usage of `-M dplane_fpm_nl`
is now producing the same netlink messages that `-M fpm`
produces when using vxlan based nexthops.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
1) Add ability to hex-dump the received packet for debugging
2) Receive encap type and vxlan vni and display them.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
In the context of SVD (Single VxLAN Device) for L3VNI,
the remote VTEP's nexthop is programmed neighbor entry against
SVD along with neighbor entry against SVI.
However, when L3VNI is removed or the VRF is disabled, all SVI
based remote nexthop neighbors are uninstalled and deleted.
The SVD based neigh entries remains in Zebra and the Kernel.
Subsequently, when reconfiguring L3VNI and relearning the same nexthop,
the neighbor entry is not programmed is because it is not removed
from Zebra SVD neighbor hash table, leading to the failure to
reprogram the entry.
With this fix, the SVD nexthop neigh entry is uninstalled
and deleted from Zebra and Kernel.
Ticket: #3729045
Testing:
borderleaf:# ip neigh show 2.2.2.2
2.2.2.2 dev vlan2560_l3 lladdr 00:01:00:00:1d:09 extern_learn NOARP proto zebra
2.2.2.2 dev vxlan99 lladdr 00:01:00:00:1d:09 extern_learn NOARP proto zebra
With the fix:
Zebra log shows both enties SVD (vxlan99) and SVI (vlan2560_l3)
neighbor entries are deleted.
2024/05/03 18:41:33.527125 ZEBRA: [NH6N7-54CD1] Tx RTM_DELNEIGH family
ipv4 IF vxlan99(16) Neigh 2.2.2.2 MAC null flags 0x10 state 0x0
ext_flags 0x0
2024/05/03 18:41:33.527128 ZEBRA: [NH6N7-54CD1] Tx RTM_DELNEIGH family
ipv4 IF vlan2560_l3(18) Neigh 2.2.2.2 MAC null flags 0x10 state 0x0
ext_flags 0x0
borderleaf:# ip neigh show 2.2.2.2
borderleaf:#
Signed-off-by: Chirag Shah <chirag@nvidia.com>
Upon bridge flap, the associated SVD case,
VLAN membership is not updated correctly.
When SVI comes up, the VNI could not associate
with it as bridge VLAN membership was not updated.
Ticket: #3821632
Testing:
Before fix:
-----------
tor-1:#ifdown br_l3vni ; sleep 1 ; ifup br_l3vni
tor-1:# vtysh -c 'show evpn vni 8888'
VNI: 8888
Type: L3
Tenant VRF: sym_1
Vlan: 490
Bridge: br_l3vni
Local Vtep Ip: 27.0.0.9
Vxlan-Intf: vxlan99
SVI-If: None <<<<<< SVI not found
State: Down <<<<<< status remained in down BGP is not informed
VNI Filter: none
System MAC: None
Router MAC: None
L2 VNIs: 1800 1801 1900 1901
After fix:
----------
tor-1:# ifdown br_l3vni; sleep 1; ifup br_l3vni
tor-1:# vtysh
Hello, this is FRRouting (version 8.4.3).
Copyright 1996-2005 Kunihiro Ishiguro, et al.
tor-1# show evpn vni 8888
VNI: 8888
Type: L3
Tenant VRF: sym_1
Vlan: 490
Bridge: br_l3vni
Local Vtep Ip: 27.0.0.9
Vxlan-Intf: vxlan99
SVI-If: vlan490_l3 <<<<<<
State: Up <<<<<<
VNI Filter: none
System MAC: 44:38:39:ff:ff:29
Router MAC: 44:38:39:ff:ff:29
L2 VNIs: 1800 1801 1900 1901
Signed-off-by: Chirag Shah <chirag@nvidia.com>
This is theoretically not needed if neither DEFUNs nor zlog_* calls are
used, except I'm about to turn it into a build error to catch the cases
where it _is_ necessary. Which is libmgmt_be_nb.la in this case, where
it causes build failures on hppa.
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
With the commit `605df8d4`, all real things are moved into dplane.
So the operations mentioned in this comment have nothing to do with
this function `netlink_link_change()`.
Just remove that confusing and useless comment.
Signed-off-by: anlan_cs <anlan_cs@tom.com>
As part of the kernel netlink functionality, it is
possible that a bit of nested attributes can be
passed up. This attribute has a type value which
is stored in the lower 8 bits and in the upper 8
bits are a couple control flags that can be used.
FRR can parse this data and then just throw away
the value unless we mask off the upper 8 bits.
Let's ensure that it can be properly parsed.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
I don't know why it appears only now.
> ../sdist/zebra/fpm_listener.c:420:8: error: comparison of integers of different signs: 'int' and 'size_t' (aka 'unsigned long') [-Werror,-Wsign-compare]
> if (!RTNH_OK(rtnh, len)) {
> ^~~~~~~~~~~~~~~~~~
> ../sdist/include/linux/rtnetlink.h:437:31: note: expanded from macro 'RTNH_OK'
> ((int)(rtnh)->rtnh_len) <= (len))
len is set with RTA_PAYLOAD and should be an integer.
> len = RTA_PAYLOAD(mpath_rtattr);
> #define RTA_PAYLOAD(rta) ((int)((rta)->rta_len) - RTA_LENGTH(0))
Signed-off-by: Louis Scalbert <louis.scalbert@6wind.com>
Add the support for adding DX6 behavior into netlink layer of zebra.
Add the necessary test in sharpd.
> ubuntu2204# sharp install seg6local-routes 1:1::1:2 nexthop-seg6local loop1 End_DX6 4:4::4:6 1
> ubuntu2204# do show ipv6 route
> [..]
> D>* 1:1::1:2/128 [150/0] is directly connected, loop1, seg6local End.DX6 nh6 4:4::4:6, weight 1, 00:00:03
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
In zebra_interface_nhg_reinstall zebra is checking that the
nhg is a singleton and not a blackhole nhg. This was originally
done with checking that the nexthop is a NEXTHOP_TYPE_IFINDEX,
NEXTHOP_TYPE_IPV4_IFINDEX and NEXTHOP_TYPE_IPV6_IFINDEX. This
was excluding NEXTHOP_TYPE_IPV4 and NEXTHOP_TYPE_IPV6. These
were both possible to be received and maintained from the upper
level protocol for when a route is being recursively resolved.
If we have gotten to this point in zebra_interface_nhg_reinstall
the nexthop group has already been installed at least once
and we *know* that it is actually a valid nexthop. What the
test is really trying to do is ensure that we are not reinstalling
a blackhole nexthop group( Which is not possible to even be
here by the way, but safety first! ). So let's change
to test for that instead.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
Change input/output arguments of the RPC callback from lists of
(xpath/value) tuples to YANG data trees.
Signed-off-by: Igor Ryzhov <iryzhov@nfware.com>
This was caught by the grpc_basic test which was receiving an invalid error
result, which was returned b/c inside zebra the libyang code was flagging the
value as invalid for a derived zebra interface type.
Signed-off-by: Christian Hopps <chopps@labn.net>
If a command is not marked as `YANG`-converted, the current command
batching buffer is flushed before executing the command. We shouldn't
flush the buffer when executing an `exit` command. It should only be
flushed if the next command is not `YANG`-converted, which is checked by
the command itself, not the previous `exit`.
Fixes#15706.
Signed-off-by: Igor Ryzhov <iryzhov@nfware.com>
