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The RFC 8986 defines the SRv6 Network Programming concept and specifies the base set of SRv6 behaviors that enables the creation of interoperable overlays with underlay optimization. In addition, the RFC 8986 introduces the concept of "flavors", additional operations that can modify or extend the existing SRv6 behaviors. In the Linux kernel and in FRR, an SRv6 SID is implemented as a route associated with a `seg6local` nexthop. A `seg6local` nexthop represents an SRv6 behavior bound to a SID. The Linux kernel already supports the ability to add a set of flavors to a `seg6local` nexthop to modify or extend the associated behavior. This commit aligns the `seg6local` nexthop implementation of FRR to the Linux kernel. It extends the `seg6local` nexthop implementation by adding a struct `seg6local_flavors_info` that encodes the SRv6 flavors information. Currently, the `seg6local_flavors_info` data structure has three members: - `tlv_ops` indicates which flavors are enabled for the `seg6local` nexthop; - `lcblock_len`is the length of the Locator-Block part of the SID; - `lcnode_func_len` is the length of the combined Node and Function parts of the SID. `lcblock_len` and `lcnode_func_len` define the SID structure. They are required for some behaviors (e.g. NEXT-C-SID and REPLACE-C-SID). For other flavors (e.g. PSP, USP, USD) these parameters are not required and can be omitted. Signed-off-by: Carmine Scarpitta <carmine.scarpitta@uniroma2.it> |
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FRRouting
FRR is free software that implements and manages various IPv4 and IPv6 routing protocols. It runs on nearly all distributions of Linux and BSD and supports all modern CPU architectures.
FRR currently supports the following protocols:
- BGP
- OSPFv2
- OSPFv3
- RIPv1
- RIPv2
- RIPng
- IS-IS
- PIM-SM/MSDP
- LDP
- BFD
- Babel
- PBR
- OpenFabric
- VRRP
- EIGRP (alpha)
- NHRP (alpha)
Installation & Use
For source tarballs, see the releases page.
For Debian and its derivatives, use the APT repository at https://deb.frrouting.org/.
Instructions on building and installing from source for supported platforms may be found in the developer docs.
Once installed, please refer to the user guide for instructions on use.
Community
The FRRouting email list server is located here and offers the following public lists:
| Topic | List |
|---|---|
| Development | dev@lists.frrouting.org |
| Users & Operators | frog@lists.frrouting.org |
| Announcements | announce@lists.frrouting.org |
For chat, we currently use Slack. You can join by clicking the "Slack" link under the Participate section of our website.
Contributing
FRR maintains developer's documentation which contains the project workflow and expectations for contributors. Some technical documentation on project internals is also available.
We welcome and appreciate all contributions, no matter how small!
Security
To report security issues, please use our security mailing list:
security [at] lists.frrouting.org