[PATCH net-next v5 09/10] netlink: specs: rt-route: add the route deletion reason
From: Yuyang Huang <hidden>
Date: 2026-08-04 01:48:17
Also in:
linux-kselftest, 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
Add the del-reason attribute and its enum to the route attribute set, and to the getroute reply, which the route notifications reuse. The attribute is absent from the newroute and delroute request lists. RTA_DEL_REASON is above strict_start_type in rtm_ipv6_policy, so encoding it in a request is rejected with -EINVAL. Signed-off-by: Yuyang Huang <redacted> --- Documentation/netlink/specs/rt-route.yaml | 17 +++++++++++++++++ 1 file changed, 17 insertions(+)
diff --git a/Documentation/netlink/specs/rt-route.yaml b/Documentation/netlink/specs/rt-route.yaml
index 9f4a1a253676..f14532798640 100644
--- a/Documentation/netlink/specs/rt-route.yaml
+++ b/Documentation/netlink/specs/rt-route.yaml@@ -78,6 +78,15 @@ definitions: - name: rta-used type: u32 + - + name: del-reason + type: enum + name-prefix: rt-del-reason- + enum-name: rt-del-reason + entries: + - unspec + - expired + - ra-withdrawn attribute-sets: -
@@ -185,6 +194,10 @@ attribute-sets: type: u32 byte-order: big-endian display-hint: hex + - + name: del-reason + type: u32 + enum: del-reason - name: metrics name-prefix: rtax-
@@ -299,6 +312,7 @@ operations: - dport - nh-id - flowlabel + - del-reason dump: request: value: 26
@@ -313,6 +327,9 @@ operations: do: request: value: 24 + # del-reason is notification-only. It is above + # strict_start_type in rtm_ipv6_policy, so the kernel rejects + # it in requests. attributes: &route-req-attrs - dst - src
--
2.43.0