On Wed, 2 Dec 2020 14:05:09 +0100 Andrea Mayer wrote: > This patchset provides support for the SRv6 End.DT4 and End.DT6 (VRF mode) > behaviors. > > The SRv6 End.DT4 behavior is used to implement multi-tenant IPv4 L3 VPNs. It > decapsulates the received packets and performs IPv4 routing lookup in the > routing table of the tenant. The SRv6 End.DT4 Linux implementation leverages a > VRF device in order to force the routing lookup into the associated routing > table. > The SRv6 End.DT4 behavior is defined in the SRv6 Network Programming [1]. > > The Linux kernel already offers an implementation of the SRv6 End.DT6 behavior > which allows us to set up IPv6 L3 VPNs over SRv6 networks. This new > implementation of DT6 is based on the same VRF infrastructure already exploited > for implementing the SRv6 End.DT4 behavior. The aim of the new SRv6 End.DT6 in > VRF mode consists in simplifying the construction of IPv6 L3 VPN services in > the multi-tenant environment. > Currently, the two SRv6 End.DT6 implementations (legacy and VRF mode) > coexist seamlessly and can be chosen according to the context and the user > preferences. > > - Patch 1 is needed to solve a pre-existing issue with tunneled packets > when a sniffer is attached; > > - Patch 2 improves the management of the seg6local attributes used by the > SRv6 behaviors; > > - Patch 3 adds support for optional attributes in SRv6 behaviors; > > - Patch 4 introduces two callbacks used for customizing the > creation/destruction of a SRv6 behavior; > > - Patch 5 is the core patch that adds support for the SRv6 End.DT4 > behavior; > > - Patch 6 introduces the VRF support for SRv6 End.DT6 behavior; > > - Patch 7 adds the selftest for SRv6 End.DT4 behavior; > > - Patch 8 adds the selftest for SRv6 End.DT6 (VRF mode) behavior. > > Regarding iproute2, the support for the new "vrftable" attribute, required by > both SRv6 End.DT4 and End.DT6 (VRF mode) behaviors, is provided in a different > patchset that will follow shortly. > > I would like to thank David Ahern for his support during the development of > this patchset. Applied, thank you!
