Messages in this thread | | | From | Josef Miegl <> | Subject | [PATCH v2 0/1] net: geneve: accept every ethertype | Date | Mon, 27 Feb 2023 08:41:03 +0100 |
| |
The Geneve encapsulation, as defined in RFC 8926, has a Protocol Type field, which states the Ethertype of the payload appearing after the Geneve header.
Commit 435fe1c0c1f7 ("net: geneve: support IPv4/IPv6 as inner protocol") introduced a new IFLA_GENEVE_INNER_PROTO_INHERIT flag that allowed the use of other Ethertypes than Ethernet. However, for a reason not known to me, it imposed a restriction that prohibits receiving payloads other than IPv4, IPv6 and Ethernet.
This patch removes this restriction, making it possible to receive any Ethertype as a payload, if the IFLA_GENEVE_INNER_PROTO_INHERIT flag is set.
This is especially useful if one wants to encapsulate MPLS, because with this patch the control-plane traffic (IP, LLC) and the data-plane traffic (MPLS) can be encapsulated without an Ethernet frame, making lightweight overlay networks a possibility.
Changes in v2: - added a cover letter - lines no longer exceed 80 columns
Josef Miegl (1): net: geneve: accept every ethertype
drivers/net/geneve.c | 15 ++++----------- 1 file changed, 4 insertions(+), 11 deletions(-)
-- 2.37.1
| |