`isis_srv6_area_init` should not use `yang_get_default_*` functions for
fabricd.
Fixes: https://github.com/FRRouting/frr/issues/14722
Signed-off-by: Carmine Scarpitta <cscarpit@cisco.com>
Add CLI command and functions to configure the interface used for
installing SRv6 SIDs into Linux data plane
Signed-off-by: Carmine Scarpitta <carmine.scarpitta@uniroma2.it>
The function `sid_exist` verifies if a given SRv6 SID has already been
allocated for a given IS-IS area. This commit extends `sid_exist` to
also consider adjacency SIDs when checking for the existence of the SID.
Signed-off-by: Carmine Scarpitta <carmine.scarpitta@uniroma2.it>
An SRv6 adjacency SID is a SID that is associated with a particular
adjacency. Adjacency SIDs are advertised using the SRv6 End.X SID
Sub-TLV (RFC 9352 section #8.1) or SRv6 LAN End.X SID Sub-TLV (RFC 9352
section #8.2).
This commit defines the following Adj SIDs management functions:
* srv6_endx_sid_add_single: add a new SRv6 Adjacency SID
* srv6_endx_sid_del: delete an SRv6 Adjacency SID
* isis_srv6_endx_sid_find: lookup SRv6 End.X SID by type
It also attaches some callbacks to the hooks isis_adj_state_change_hook,
isis_adj_ip_enabled_hook, isis_adj_ip_disabled_hook, which are
responsible for installing/removing an SRv6 Adjacency SID automatically
when the state of an IS-IS adjacency changes.
Signed-off-by: Carmine Scarpitta <carmine.scarpitta@uniroma2.it>
Add a function to fill in an SRv6 SID Structure Sub-Sub-TLV with
information from an SRv6 SID (RFC 9352 section #9).
Signed-off-by: Carmine Scarpitta <carmine.scarpitta@uniroma2.it>
Add a function to fill in an SRv6 End SID Sub-TLV with information from
an SRv6 End SID (RFC 9352 section #7.2).
Signed-off-by: Carmine Scarpitta <carmine.scarpitta@uniroma2.it>
Add a function to fill in an SRv6 Locator TLV with information from an
SRv6 locator (RFC 9352 section #7.1).
Signed-off-by: Carmine Scarpitta <carmine.scarpitta@uniroma2.it>
When an SRv6 locator is unset, remove all the SRv6 End SIDs allocated
from that locator.
Signed-off-by: Carmine Scarpitta <carmine.scarpitta@uniroma2.it>
Add a function to allocate an SRv6 SID from an SRv6 locator chunk owned
by IS-IS. The chunk must be allocated by a previous call to
`isis_zebra_srv6_manager_get_locator_chunk()`.
Signed-off-by: Carmine Scarpitta <carmine.scarpitta@uniroma2.it>
Add the list of SRv6 SIDs allocated by the IS-IS instance to the per-area
SRv6 configuration. The list is area-specific. Each IS-IS area has its
own SRv6 SIDs list. The list is initialized when an IS-IS area is
created and freed when an IS-IS area is destroyed.
Signed-off-by: Carmine Scarpitta <carmine.scarpitta@uniroma2.it>
Define a new memtype `MTYPE_ISIS_SRV6_SID` used to allocate objects of
type `IS-IS SRv6 SID`.
Signed-off-by: Carmine Scarpitta <carmine.scarpitta@uniroma2.it>
Add a function to unset the SRv6 locator for a specific IS-IS area.
This function calls `isis_zebra_srv6_manager_release_locator_chunk()` to
ask zebra to release the locator chunk owned by IS-IS and removes the
chunk from the area's chunks list.
Signed-off-by: Carmine Scarpitta <carmine.scarpitta@uniroma2.it>
Add a list of SRv6 locator chunks allocated to a specific IS-IS area.
The list is initialized when the IS-IS area is created and freed when
the IS-IS area is destroyed. Subsequent commits will introduce the
possibility to allocate and release locator chunks.
Signed-off-by: Carmine Scarpitta <carmine.scarpitta@uniroma2.it>
Add a CLI command to print SRv6 capabilities, algorithms and MSDs
supported by the IS-IS nodes.
Example:
r1# show isis segment-routing srv6 node
Area FOO:
IS-IS L1 SRv6-Nodes:
IS-IS L2 SRv6-Nodes:
System ID Algorithm SRH Max SL SRH Max End Pop SRH Max H.encaps SRH Max End D
-----------------------------------------------------------------------------------------
1111.1111.1111 SPF 16 0 1 2
2222.2222.2222 SPF 16 0 1 2
Signed-off-by: Carmine Scarpitta <carmine.scarpitta@uniroma2.it>
Add Maximum SRv6 SID Depths (MSDs) parameters as per RFC 9352 section #4
to the per-area IS-IS SRv6 Data Base. Currently the MSD values are
hardcoded.
Signed-off-by: Carmine Scarpitta <carmine.scarpitta@uniroma2.it>
`isis_srv6_area_term()` cleans up SRv6 information for a specific
IS-IS area. This commit adds a new function `isis_srv6_term()` that will
be used to perform global SRv6 cleanup.
Signed-off-by: Carmine Scarpitta <carmine.scarpitta@uniroma2.it>
`isis_srv6_area_init()` initializes SRv6 information for a specific
IS-IS area. This commit adds a new function `isis_srv6_init()` that will
be used to perform global SRv6 initialization.
Signed-off-by: Carmine Scarpitta <carmine.scarpitta@uniroma2.it>
When SRv6 is initialized on a given IS-IS area, set the administrative
enabled status to the default value defined by the YANG model.
Signed-off-by: Carmine Scarpitta <carmine.scarpitta@uniroma2.it>
Add `isis_srv6.c` and `isis_srv6.h` files needed to support SRv6 in IS-IS
(as per RFC 9352).
Signed-off-by: Carmine Scarpitta <carmine.scarpitta@uniroma2.it>
