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netlink: specs: rt-route: add lwtunnel encap sub-message support

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Define encap-type enum (LWTUNNEL_ENCAP_*) and add encap-data sub-message
keyed by encap-type. Add tunnel attribute sets (mpls, ip, ila, ip6, seg6,
bpf, seg6-local, rpl, ioam6, xfrm). This spec update depends on the kernel
side encap-type/data reorder patch.

Keep some nested option attributes as binary in this patch to simplify
review; they will be converted in follow-up patches.

Also add the Makefile to include uapi headers. Note the lwtunnel.h
is guarded by _UAPI_LWTUNNEL_H_.

Signed-off-by: Hangbin Liu <liuhangbin@kylinos.cn>
Link: https://patch.msgid.link/20261008-ynl_rt_encap-v4-3-4ed2ccf7f949@kylinos.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Hangbin Liu 2026-10-08 16:24:03 +08:00 committed by Jakub Kicinski
parent 05d3030eff
commit 24d11a5586
2 changed files with 294 additions and 2 deletions
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287
Documentation/netlink/specs/rt-route.yaml
View File

@ -99,6 +99,58 @@ definitions:
name: ra-withdrawn
doc: A Router Advertisement withdrew the route with a zero
lifetime.
-
name: encap-type
type: enum
name-prefix: lwtunnel-encap-
enum-name:
entries:
- none
- mpls
- ip
- ila
- ip6
- seg6
- bpf
- seg6-local
- rpl
- ioam6
- xfrm
sub-messages:
-
name: encap-data
formats:
-
value: mpls
attribute-set: mpls-iptunnel
-
value: ip
attribute-set: lwtunnel-ip
-
value: ila
attribute-set: ila-attrs
-
value: ip6
attribute-set: lwtunnel-ip6
-
value: seg6
attribute-set: seg6-iptunnel
-
value: bpf
attribute-set: lwt-bpf
-
value: seg6-local
attribute-set: seg6-local
-
value: rpl
attribute-set: rpl-iptunnel
-
value: ioam6
attribute-set: ioam6-iptunnel
-
value: xfrm
attribute-set: lwt-xfrm
attribute-sets:
-
@ -174,9 +226,12 @@ attribute-sets:
-
name: encap-type
type: u16
enum: encap-type
-
name: encap
type: binary # tunnel specific nest
type: sub-message
sub-message: encap-data
selector: encap-type
-
name: expires
type: u32
@ -277,6 +332,236 @@ attribute-sets:
-
name: fastopen-no-cookie
type: u32
-
name: mpls-iptunnel
name-prefix: mpls-iptunnel-
header: linux/mpls_iptunnel.h
attributes:
-
name: dst
type: binary
-
name: ttl
type: u8
-
name: lwtunnel-ip
name-prefix: lwtunnel-ip-
header: linux/lwtunnel.h
attributes:
-
name: id
type: u64
byte-order: big-endian
-
name: dst
type: u32
byte-order: big-endian
display-hint: ipv4
-
name: src
type: u32
byte-order: big-endian
display-hint: ipv4
-
name: ttl
type: u8
-
name: tos
type: u8
-
name: flags
type: u16
byte-order: big-endian
-
name: pad
type: pad
-
name: opts
type: binary # lwtunnel ip nest options
-
name: ila-attrs
name-prefix: ila-attr-
header: linux/ila.h
attributes:
-
name: locator
type: u64
byte-order: big-endian
-
name: identifier
type: u64
-
name: locator-match
type: u64
byte-order: big-endian
-
name: ifindex
type: s32
-
name: dir
type: u32
-
name: pad
type: pad
-
name: csum-mode
type: u8
-
name: ident-type
type: u8
-
name: hook-type
type: u8
-
name: lwtunnel-ip6
name-prefix: lwtunnel-ip6-
header: linux/lwtunnel.h
attributes:
-
name: id
type: u64
byte-order: big-endian
-
name: dst
type: binary
display-hint: ipv6
-
name: src
type: binary
display-hint: ipv6
-
name: hoplimit
type: u8
-
name: tc
type: u8
-
name: flags
type: u16
byte-order: big-endian
-
name: pad
type: pad
-
name: opts
type: binary # lwtunnel ip nest options
-
name: seg6-iptunnel
name-prefix: seg6-iptunnel-
header: linux/seg6_iptunnel.h
attributes:
-
name: srh
type: binary
-
name: src
type: binary
display-hint: ipv6
-
name: table
type: u32
-
name: lwt-bpf
name-prefix: lwt-bpf-
header: linux/lwtunnel.h
attributes:
-
name: in
type: binary # bpf prog
-
name: out
type: binary
-
name: xmit
type: binary
-
name: xmit-headroom
type: u32
-
name: seg6-local
name-prefix: seg6-local-
header: linux/seg6_local.h
attributes:
-
name: action
type: u32
-
name: srh
type: binary
-
name: table
type: u32
-
name: nh4
type: u32
byte-order: big-endian
display-hint: ipv4
-
name: nh6
type: binary
display-hint: ipv6
-
name: iif
type: u32
-
name: oif
type: u32
-
name: bpf
type: binary
-
name: vrftable
type: u32
-
name: counters
type: binary
-
name: flavors
type: binary
-
name: rpl-iptunnel
name-prefix: rpl-iptunnel-
header: linux/rpl_iptunnel.h
attributes:
-
name: srh
type: binary
-
name: ioam6-iptunnel
name-prefix: ioam6-iptunnel-
header: linux/ioam6_iptunnel.h
attributes:
-
name: mode
type: u8
-
name: dst
type: binary
display-hint: ipv6
-
name: trace
type: binary
-
name: freq-k
type: u32
-
name: freq-n
type: u32
-
name: src
type: binary
display-hint: ipv6
-
name: lwt-xfrm
name-prefix: lwt-xfrm-
header: linux/lwtunnel.h
attributes:
-
name: if-id
type: u32
-
name: link
type: u32
operations:
enum-model: directional

9
tools/net/ynl/Makefile.deps
View File

@ -45,7 +45,14 @@ CFLAGS_rt-link:=$(call get_hdr_inc,__LINUX_RTNETLINK_H,rtnetlink.h) \
$(call get_hdr_inc,_LINUX_IF_LINK_H,if_link.h)
CFLAGS_rt-neigh:=$(call get_hdr_inc,__LINUX_RTNETLINK_H,rtnetlink.h) \
$(call get_hdr_inc,__LINUX_NEIGHBOUR_H,neighbour.h)
CFLAGS_rt-route:=$(call get_hdr_inc,__LINUX_RTNETLINK_H,rtnetlink.h)
CFLAGS_rt-route:=$(call get_hdr_inc,_LINUX_ILA_H,ila.h) \
$(call get_hdr_inc,_LINUX_IOAM6_IPTUNNEL_H,ioam6_iptunnel.h) \
$(call get_hdr_inc,_LINUX_MPLS_IPTUNNEL_H,mpls_iptunnel.h) \
$(call get_hdr_inc,_LINUX_RPL_IPTUNNEL_H,rpl_iptunnel.h) \
$(call get_hdr_inc,__LINUX_RTNETLINK_H,rtnetlink.h) \
$(call get_hdr_inc,_LINUX_SEG6_IPTUNNEL_H,seg6_iptunnel.h) \
$(call get_hdr_inc,_LINUX_SEG6_LOCAL_H,seg6_local.h) \
$(call get_hdr_inc,_LWTUNNEL_H_,lwtunnel.h)
CFLAGS_rt-rule:=$(call get_hdr_inc,__LINUX_FIB_RULES_H,fib_rules.h)
CFLAGS_tc:= $(call get_hdr_inc,__LINUX_RTNETLINK_H,rtnetlink.h) \
$(call get_hdr_inc,__LINUX_PKT_SCHED_H,pkt_sched.h) \