[PATCH net-next v4 4/6] netlink: specs: rt-route: describe lwtunnel IP options
flat view
COOLING4d
From: Hangbin Liu <hidden>
Date: 2026-10-08 08:24:38
Also in:
bpf, lkml
Subsystem:
networking [general], networking [ipv4/ipv6], the rest, yaml netlink (ynl) · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, David Ahern, Ido Schimmel, Linus Torvalds, Donald Hunter
From: Hangbin Liu <redacted> Replace binary opts in lwtunnel-ip and lwtunnel-ip6 with a nested lwtunnel-ip-opts set. Add attribute sets for geneve, vxlan, and erspan IP options to match linux/lwtunnel.h. Note the kernel encodes LWTUNNEL_IP_OPTS_GENEVE differently for requests vs dumps. On the request path, the kernel iterates and reads one CLASS/TYPE/DATA triplet per geneve option. On the dump path, the kernel opens only one nested geneve option and writes a CLASS/TYPE/DATA triplet for every option within it. Before there is a proper way to handle it, I will just omit geneve options and use binary for it. Signed-off-by: Hangbin Liu <redacted> --- For sashiko: We don't need to add linux/lwtunnel.h for lwtunnel-ip-opts, lwtunnel-ip-opt-vxlan and lwtunnel-ip-opt-erspan since the parent one lwtunnel-ip already include it. --- Documentation/netlink/specs/rt-route.yaml | 45 +++++++++++++++++++++++++++++-- 1 file changed, 43 insertions(+), 2 deletions(-)
diff --git a/Documentation/netlink/specs/rt-route.yaml b/Documentation/netlink/specs/rt-route.yaml
index dc842a786794..ea6711292c9b 100644
--- a/Documentation/netlink/specs/rt-route.yaml
+++ b/Documentation/netlink/specs/rt-route.yaml@@ -377,7 +377,8 @@ attribute-sets: type: pad - name: opts - type: binary # lwtunnel ip nest options + type: nest + nested-attributes: lwtunnel-ip-opts - name: ila-attrs name-prefix: ila-attr-
@@ -444,7 +445,8 @@ attribute-sets: type: pad - name: opts - type: binary # lwtunnel ip nest options + type: nest + nested-attributes: lwtunnel-ip-opts - name: seg6-iptunnel name-prefix: seg6-iptunnel-
@@ -562,6 +564,45 @@ attribute-sets: - name: link type: u32 + - + name: lwtunnel-ip-opts + name-prefix: lwtunnel-ip-opts- + attributes: + - + name: geneve + type: binary + - + name: vxlan + type: nest + nested-attributes: lwtunnel-ip-opt-vxlan + - + name: erspan + type: nest + nested-attributes: lwtunnel-ip-opt-erspan + - + name: lwtunnel-ip-opt-vxlan + name-prefix: lwtunnel-ip-opt-vxlan- + attributes: + - + name: gbp + type: u32 + - + name: lwtunnel-ip-opt-erspan + name-prefix: lwtunnel-ip-opt-erspan- + attributes: + - + name: ver + type: u8 + - + name: index + type: u32 + byte-order: big-endian + - + name: dir + type: u8 + - + name: hwid + type: u8 operations: enum-model: directional
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2.55.0