The name 'opaque' is a little general - call the route_entry
struct 're_opaque' to make it more specific.
Signed-off-by: Mark Stapp <mstapp@nvidia.com>
EVPN route add should be queued to preserve the config order.
In particular, against deletion in rib_delete().
Signed-off-by: Xiao Liang <shaw.leon@gmail.com>
Pass in the route_node that is under consideration
into route_notify_internal to allow calling functions
to reduce stack size as well as looking up data.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
The function zsend_redistribute_route uses the prefix and
source prefix. Just pass in the route_node instead.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
Since f60a1188 we store a pointer to the VRF in the interface structure.
There's no need anymore to store a separate vrf_id field.
Signed-off-by: Igor Ryzhov <iryzhov@nfware.com>
The dplane_ctx_get_pbr_ipset_entry function only
failed when the caller did not pass in a valid
usable pointer. Change the code to assert on
a pointer not being passed in and remove the
bool return
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
The only time this function ever failed is when
the developer does not pass in a usable pointer
to place the data in. Change it to an assert
to signify to the end developer that is what
we want and then remove all the if checks
for failure
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
The function call dplane_ctx_get_pbr_ipset only
returns false when the calling function fails to
pass in a valid ipset pointer. This should
be an assertion issue since it's a programming
issue as opposed to an actual run time issue.
Change the function call parameter to not return
a bool on success/fail for a compile time decision.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
Currently the NEXTHOP_TYPE_IPV4 and NEXTHOP_TYPE_IPV6 are
not sending up the resolved ifindex for the route. This
is causing upper level protocols that have something like
this:
route-map FOO permit 10
match interface swp13
!
router ospf
redistribute static
!
ip route 4.5.6.7/32 10.10.10.10
where 10.10.10.10 resolves to interface swp13. The route-map
will never match in this case.
Since FRR has the resolved nexthop interface, FRR might as
well send it up to be selected on by the upper level protocol
as needed.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
It appears that without that change, there were no notifications
sent to bgp daemon, after flowspec operations have been sent to
zebra.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
when gre information could not be retrieved because GRE interface has
been deleted, a GRE_UPDATE message may be sent to NHRP. In that case,
the gre values are reset. There was a missing tunnel destination value,
which has been omitted.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
Pass down the safi for when we need address
resolution. At this point in time we are
hard coding the safi to SAFI_UNICAST.
Future commits will take advantage of this.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
PIM is going to need to be able to send down the address it is
trying to resolve in the multicast rib. We need a way to signal
this to the end developer. Start the conversion by adding the
ability to have a safi. But only allow SAFI_UNICAST at the moment.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
The entirety of the import checking no longer needs to be
in zebra as that no-one is calling it. Remove the code.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
These are no longer really needed. The client just needs
to call nexthop resolution instead.
So let's remove the zapi types.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
Because vrf backend may be based on namespaces, each vrf can
use in the [16-(2^32-1)] range table identifier for daemons that
request it. Extend the table manager to be hosted by vrf.
That possibility is disabled in the case the vrf backend is vrflite.
In that case, all vrf context use the same table manager instance.
Add a configuration command to be able to configure the wished
range of tables to use. This is a solution that permits to give
chunks to bgp daemon when it works with bgp flowspec entries and
wants to use specific iptables that do not override vrf tables.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
At startup there exists a time frame where we might not know
a particular vrf's router id. When zebra gets a request for
it let's not just blindly send whatever we have. Let's be
a bit smart and only respond with one if we have one.
The upper level protocol can wait for it to have one.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
Description:
Change is intended for fixing the following issues related to vrf route leaking:
Routes with special nexthops i.e. blackhole/sink routes when imported,
are not programmed into the FIB and corresponding nexthop is set as 'inactive',
nexthop interface as 'unknown'.
While importing/leaking routes between VRFs, in case of special nexthop(ipv4/ipv6)
once bgp announces route(s) to zebra, nexthop type is incorrectly set as
NEXTHOP_TYPE_IPV6_IFINDEX/NEXTHOP_TYPE_IFINDEX
i.e. directly connected even though we are not able to resolve through an interface.
This leads to nexthop_active_check marking nexthop !NEXTHOP_FLAG_ACTIVE.
Unable to find the active nexthop(s), route is not programmed into the FIB.
Whenever BGP leaks routes, set the correct nexthop type, so that route gets resolved
and correctly programmed into the FIB, in the imported vrf.
Co-authored-by: Kantesh Mundaragi <kmundaragi@vmware.com>
Signed-off-by: Iqra Siddiqui <imujeebsiddi@vmware.com>
As NHRP expects some notification of neighboring entries on GRE
interface, when a new interface notification is encountered, the
exact neighbor state flag is found. Previously, the flag passed
to the upper layer was forced to NDM_STATE which is REACHABLE,
as can be seen on below trace:
2021/08/25 10:58:39 NHRP: [QQ0NK-1H449] Netlink: new-neigh 102.1.1.1 dev gre1 lladdr 10.125.0.2 nud 0x2 cache used 1 type 5
When passing the real value, NHRP received an other value like STALE.
2021/08/25 11:28:44 NHRP: [QQ0NK-1H449] Netlink: new-neigh 102.1.1.1 dev gre1 lladdr 10.125.0.2 nud 0x4 cache used 0 type 5
This flag is important for NHRP, as it permits to monitor the link
layer of NHRP entries.
Fixes: d603c0774e ("nhrp, zebra, lib: enforce usage of zapi_neigh_ip structure")
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
For some reason commit #ef524230a6baa decided
to remove enums and switch to uint16_t. Which
is not the right thing to do. Put it back
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
When calling rib_add_multipath_nhe ensure that we have
well aligned return codes that mean something so that
interersted parties can properly handle the situation.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
When receiving a route via zapi, if the route is rejected
there exists a code path where we would not free the corresponding
re created.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
Move remote VTEP updates from immediate, inline processing
in their ZAPI message handlers to the main workqueue.
Signed-off-by: Mark Stapp <mjs@voltanet.io>
In the reachability code we auto pass back the fully resolved
nexthops. Modify the ZEBRA_IPV4_NEXTHOP_LOOKUP_MRIB code
to do the exact same thing so that the zclient_lookup_nexthop
code does not need to recursively look for the data that
zebra already has.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
https://github.com/FRRouting/frr/pull/5865#discussion_r597670225
As this comment says. ZEBRA_FLAG_XXX should not have been used.
To communicate SRv6 Route Information. A simple Nexthop Flag would
have been sufficient for SRv6 information. And I fixed the whole
thing that way.
Signed-off-by: Hiroki Shirokura <slank.dev@gmail.com>
With this patch, zclient can intall seg6 rotues when
they set properties "nh_seg6_segs" on struct nexthop
and set ZEBRA_FLAG_SEG6_ROUTE on zapi_route's flag.
Signed-off-by: Hiroki Shirokura <slank.dev@gmail.com>
This commit is a part of #5853 works that add new ZAPI to
configure SRv6 locator which manages chunk prefix for
SRv6 SID IPv6 address for each routing protocol daemons.
NEW-ZAPIs:
* ZEBRA_SRV6_LOCATOR_ADD
* ZEBRA_SRV6_LOCATOR_DELETE
* ZEBRA_SRV6_MANAGER_CONNECT
* ZEBRA_SRV6_MANAGER_GET_LOCATOR_CHUNK
* ZEBRA_SRV6_MANAGER_RELEASE_LOCATOR_CHUNK
Zclient can connect to zebra's srv6-manager with
ZEBRA_SRV6_MANAGER_CONNECT api like a label-manager.
Then zclient uses ZEBRA_SRV6_MANAGER_GET_LOCATOR_CHUNK to
allocated dedicated locator chunk for it's routing protocol.
Zebra works for only prefix reservation and distribute
the ownership of the locator chunks for zcliens.
Then, zclient installs SRv6 function with
ZEBRA_ROUTE_ADD api with nh_seg6local_* fields.
This feature is already implemented by another PR(#7680).
Signed-off-by: Hiroki Shirokura <slank.dev@gmail.com>
With this patch, zclient can intall seg6local rotues whem
they set properties nh_seg6local_{action,ctx} on struct nexthop
and set ZEBRA_FLAG_SEG6LOCAL_ROUTE on zapi_route's flag.
Signed-off-by: Hiroki Shirokura <slank.dev@gmail.com>
- gre keys are collected and stored locally.
- when gre source set is requested, and the link interface
configured is different, the gre information collected is
pushed in the query, namely source ip or gre keys if present.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
preserve mtu upon interface flapping and tunnel source change.
Signed-off-by:Reuben Dowle <reuben.dowle@4rf.com>
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
This action is initiated by nhrp and has been stubbed when
moving to zebra. Now, a netlink request is forged to set
the link interface of a gre interface if that gre interface
does not have already a link interface.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
Use the main zebra workqueue for daemon-owned NHGs, in addition
to processing kernel-owned NHGs. The zapi message processing
creates a temporary object that's enqueued to the workqueue,
then processed/installed as part of the workqueue processing.
Signed-off-by: Mark Stapp <mjs@voltanet.io>
zapi_nbr structure is renamed to zapi_neigh_ip.
Initially used to set a neighbor ip entry for gre interfaces, this
structure is used to get events from the zebra layer to nhrp layer.
The ndm state has been added, as it is needed on both sides.
The zebra dplane layer is slightly modified.
Also, to clarify what ZEBRA_NEIGH_ADD/DEL means, a rename is done:
it is called now ZEBRA_NEIGH_IP_ADD/DEL, and it signified that this
zapi interface permits to set link operations by associating ip
addresses to link addresses.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
Instead of directly configuring the neighbor table after read from zapi
interface, a zebra dplane context is prepared to host the interface and
the family where the neighbor table is updated. Also, some other fields
are hosted: app_probes, ucast_probes, and mcast_probes. More information
on those fields can be found on ip-ntable configuration.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
EVPN neighbor operations were already done in the zebra dataplane
framework. Now that NHRP is able to use zebra to perform neighbor IP
operations (by programming link IP operations), handle this operation
under dataplane framework:
- assign two new operations NEIGH_IP_INSTALL and NEIGH_IP_DELETE; this
is reserved for GRE like interfaces:
example: ip neigh add A.B.C.D lladdr E.F.G.H
- use 'struct ipaddr' to store and encode the link ip address
- reuse dplane_neigh_info, and create an union with mac address
- reuse the protocol type and use it for neighbor operations; this
permits to store the daemon originating this neighbor operation.
a new route type is created: ZEBRA_ROUTE_NEIGH.
- the netlink level functions will handle a pointer, and a type; the
type indicates the family of the pointer: AF_INET or AF_INET6 if the
link type is an ip address, mac address otherwise.
- to keep backward compatibility with old queries, as no extension was
done, an option NEIGH_NO_EXTENSION has been put in place
- also, 2 new state flags are used: NUD_PERMANENT and NUD_FAILED.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
neighbor table api in zebra is added. a netlink api is created for that.
the handler is called from the api defined in the previous commit.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
a zebra api is extended to offer ability to add or remove neighbor
entry from daemon. Also this extension makes possible to add neigh
entry, not only between IPs and macs, but also between IPs and NBMA IPs.
This API supports configuring ipv6/ipv4 entries with ipv4/ipv6 lladdr.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
zebra implements zebra api for configuring link layer information. that
can be an arp entry (for ipv4) or ipv6 neighbor discovery entry. This
can also be an ipv4/ipv6 entry associated to an underlay ipv4 address,
as it is used in gre point to multipoint interfaces.
this api will also be used as monitoring. an hash list is instantiated
into zebra (this is the vrf bitmap). each client interested in those entries
in a specific vrf, will listen for following messages: entries added, removed,
or who-has messages.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
EVPN nexthops are installed as remote neighs by zebra. This was earlier
done only via VRF IPvX uni routes imported from EVPN routes.
With EVPN-MH these VRF routes now reference a L3NHG which is setup based
on the EAD and doesn't include the RMAC. To workaround that BGP now
consolidates and maintains EVPN nexthops which are then sent to zebra.
zebra sets up these nexthops as L3-VNI nh entries using a dummy type-1
route as reference.
Ticket: CM-31398
Signed-off-by: Anuradha Karuppiah <anuradhak@cumulusnetworks.com>
This one also needed a bit of shuffling around, but MTYPE_RE is the only
one left used across file boundaries now.
Signed-off-by: David Lamparter <equinox@diac24.net>
like it has been done for iptable contexts, a zebra dplane context is
created for each ipset/ipset entry event. The zebra_dplane_ctx job is
then enqueued and processed by separate thread. Like it has been done
for zebra_pbr_iptable context, the ipset and ipset entry contexts are
encapsulated into an union of structures in zebra_dplane_ctx.
There is a specificity in that when storing ipset_entry structure, there
was a backpointer pointer to the ipset structure that is necessary
to get some complementary information before calling the hook. The
proposal is to use an ipset_entry_info structure next to the ipset_entry,
in the zebra_dplane context. That information is used for ipset_entry
processing. The ipset name and the ipset type are the only fields
necessary.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
The iptable processing was not handled in remote dataplane, and was
directly processed by the thread in charge of zapi calls. Now that call
can be handled in the zebra_dplane separate thread. once a
zebra_dplane_ctx is allocated for iptable handling, the hook call is
performed later. Subsequently, a return code may be triggered to zclient
interface if any problem occurs when calling the hook call.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
Neither tabs nor newlines are acceptable in syslog messages. They also
break line-based parsing of file logs.
Signed-off-by: David Lamparter <equinox@diac24.net>
valgrind is reporting:
2448137-==2448137== Thread 5 zebra_apic:
2448137-==2448137== Syscall param writev(vector[...]) points to uninitialised byte(s)
2448137:==2448137== at 0x4D6FDDD: __writev (writev.c:26)
2448137-==2448137== by 0x4D6FDDD: writev (writev.c:24)
2448137-==2448137== by 0x48A35F5: buffer_flush_available (buffer.c:431)
2448137-==2448137== by 0x48A3504: buffer_flush_all (buffer.c:237)
2448137-==2448137== by 0x495948: zserv_write (zserv.c:263)
2448137-==2448137== by 0x4904B7E: thread_call (thread.c:1681)
2448137-==2448137== by 0x48BD3E5: fpt_run (frr_pthread.c:308)
2448137-==2448137== by 0x4C61EA6: start_thread (pthread_create.c:477)
2448137-==2448137== by 0x4D78DEE: clone (clone.S:95)
2448137-==2448137== Address 0x720c3ce is 62 bytes inside a block of size 4,120 alloc'd
2448137:==2448137== at 0x483877F: malloc (vg_replace_malloc.c:307)
2448137-==2448137== by 0x48D2977: qmalloc (memory.c:110)
2448137-==2448137== by 0x48A30E3: buffer_add (buffer.c:135)
2448137-==2448137== by 0x48A30E3: buffer_put (buffer.c:161)
2448137-==2448137== by 0x49591B: zserv_write (zserv.c:256)
2448137-==2448137== by 0x4904B7E: thread_call (thread.c:1681)
2448137-==2448137== by 0x48BD3E5: fpt_run (frr_pthread.c:308)
2448137-==2448137== by 0x4C61EA6: start_thread (pthread_create.c:477)
2448137-==2448137== by 0x4D78DEE: clone (clone.S:95)
2448137-==2448137== Uninitialised value was created by a stack allocation
2448137:==2448137== at 0x43E490: zserv_encode_vrf (zapi_msg.c:103)
Effectively we are sending `struct vrf_data` without ensuring
data has been properly initialized.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
Send the results of daemons' nhg updates asynchronously,
after the update has actually completed. Capture additional
info about the source daemon in order to locate the correct
zapi session. Simplify the result types considered by the
zebra_nhg module.
Signed-off-by: Mark Stapp <mjs@voltanet.io>
The raw zapi apis to encode and decode NHGs don't need to be
public; also add a little more validity-checking.
Signed-off-by: Mark Stapp <mjs@voltanet.io>
Following functions is using writen to dispatch message
into socket, but another function uses zserv_send_message.
This commit does tiny unification for zapi's socket messaging.
Funcs:
- zsend_assign_label_chunk_response()
- zsend_label_manager_connect_response()
Signed-off-by: Hiroki Shirokura <slank.dev@gmail.com>
Just gather the opaque data into the route entry. Later
commits will display this data for end users as well as
to send it down.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
Issue:
The bgp routes learnt from peers which are not installed in kernel are
advertised to peers. This can cause routers to send traffic to these
destinations only to get dropped. The fix is to provide a configurable
option "bgp suppress-fib-pending". When the option is enabled, bgp will
advertise routes only if it these are successfully installed in kernel.
Fix (Part1) :
* Added message ZEBRA_ROUTE_NOTIFY_REQUEST used by client to request
FIB install status for routes
* Added AFI/SAFI to ZAPI messages
* Modified the functions zapi_route_notify_decode(), zsend_route_notify_owner()
and route_notify_internal() to include AFI, SAFI as parameters
Signed-off-by: kssoman <somanks@gmail.com>
Only set the NHG/backup NHG pointers of the caller if the read
of the nexthops was successfull. Otherwise, we might free when not
neccessary or double free.
Signed-off-by: Stephen Worley <sworley@cumulusnetworks.com>
Add the zapi code for encoding/decoding of backup nexthops for when
we are ready for it, but disable it for now so that we revert
to the old way with them.
When zebra gets a proto-NHG with a backup in it, we early fail and
tell the upper level proto. In this case sharpd. Sharpd then reverts
to the old way of installation with the route.
Signed-off-by: Stephen Worley <sworley@cumulusnetworks.com>
Add type to the nhg_proto_del API params for sanity checking
that the types of the route sent by the proto matches the type
found with the ID.
Signed-off-by: Stephen Worley <sworley@cumulusnetworks.com>
Clean up the function names and remove some TODOs that are no
longer needed/hacks we used for testing.
Signed-off-by: Stephen Worley <sworley@cumulusnetworks.com>
Get the multipath number checks working with proto-based NHG
message decoding in zapi_msg.c
Modify the function that checks this for routes to work without
being passed a prefix as is the case with NHG creates.
Signed-off-by: Stephen Worley <sworley@cumulusnetworks.com>
Make the message parameters align better with other zapi
notifications and change the ID to correctly be a uint32.
Signed-off-by: Stephen Worley <sworley@cumulusnetworks.com>
Fix some reference counting issues seen when replacing
a NHG and deleting one.
For replacement, we should end with the same refcnt on the new
one.
For delete, its the caller's job to decrement its ref after
its done with it.
Further, update routes in the rib with the new pointer after replace.
Signed-off-by: Stephen Worley <sworley@cumulusnetworks.com>
When we add a proto NHG, increment the refcount, when
we del a proto NHG, decrement the refcount rather than
deleting it explicitly. If the upper level proto is handling
it properly, it should get decremented to zero when we
receive a NHG del.
Signed-off-by: Stephen Worley <sworley@cumulusnetworks.com>
Fix check in zread where we determine validity of a route
based on reading in nexthops/checking ID is present.
We had a bad conditional that was determining a route
is bad if its not NHG ID based.
Signed-off-by: Stephen Worley <sworley@cumulusnetworks.com>
We were hard coding proto bgp for use with the NHG creation.
Use the actual passed one from zapi now that it exists.
Signed-off-by: Stephen Worley <sworley@cumulusnetworks.com>
Add code to properly handle routes sent with NHG ID rather
than a nexthop_group.
For now, we separate this from backup nexthop handling since that
should probably be added to the nhg_proto_add calls.
Signed-off-by: Stephen Worley <sworley@cumulusnetworks.com>
Implement the underlying zebra functionality to Add/Del an
internal zebra and kernel NHG.
These NHGs are managed by the upperlevel protocols that send them
down via zapi messaging.
They are not put into the overall zebra NHG hash table and only
put into to the ID table. Therefore, different protos cannot
and will not share NHGs.
The proto is also set appropriately when sent to the kernel.
Expand the separation of Zebra hashed/shared/created NHGs and
proto created and mangaged NHGs.
Signed-off-by: Stephen Worley <sworley@cumulusnetworks.com>
Modify the send down of a route to use the nexthop group id
if we have one associated with the route.
Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
