[PATCH net-next v6 3/4] netlink: specs: rt-addr: document AF_PACKET multicast dumps
From: Yuyang Huang <hidden>
Date: 2026-09-22 00:00:09
Also in:
lkml, netdev
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 global flag, list the attributes the AF_PACKET dump uses and describe how ifa-family selects IPv4, IPv6 or link-layer output for RTM_GETMULTICAST. Signed-off-by: Yuyang Huang <redacted> Reviewed-by: Nicolas Dichtel <redacted> --- Documentation/netlink/specs/rt-addr.yaml | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-)
diff --git a/Documentation/netlink/specs/rt-addr.yaml b/Documentation/netlink/specs/rt-addr.yaml
index 17ead2203451..dc5c0ce259ba 100644
--- a/Documentation/netlink/specs/rt-addr.yaml
+++ b/Documentation/netlink/specs/rt-addr.yaml@@ -77,6 +77,8 @@ definitions: name: mcautojoin - name: stable-privacy + - + name: global attribute-sets: -
@@ -168,7 +170,15 @@ operations: attributes: *ifaddr-all - name: getmulticast - doc: Get / dump IPv4/IPv6 multicast addresses. + doc: | + Get / dump multicast addresses. ifa-family must select the address + family: AF_INET or AF_INET6 for the IP multicast groups joined on + a device, AF_PACKET for the link-layer multicast addresses in the + device filter. Link-layer entries added explicitly, e.g. with + SIOCADDMULTI or "bridge fdb add ... self", rather than by a + protocol join are reported with the global flag set. A non-zero + ifa-index restricts the dump to that device, ifa-prefixlen, + ifa-flags and ifa-scope must be zero. attribute-set: addr-attrs fixed-header: ifaddrmsg do:
@@ -181,10 +191,13 @@ operations: - multicast - mc-users - cacheinfo + - flags + - target-netnsid dump: request: value: 58 - attributes: [] + attributes: + - target-netnsid reply: value: 58 attributes: *mcaddr-attrs
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2.43.0