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Miller" , David Ahern , Donald Hunter , Eric Dumazet , Ido Schimmel , Jacob Keller , Jakub Kicinski , Johannes Berg , Kees Cook , Kory Maincent , Kuniyuki Iwashima , Nicolas Dichtel , Nikolaos Gkarlis , Paolo Abeni , Sabrina Dubroca , Shuah Khan , Simon Horman , Stanislav Fomichev , Vadim Fedorenko , Willem de Bruijn , linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH net-next v9 5/6] netlink: specs: rt-addr: document AF_PACKET multicast dumps Date: Wed, 30 Sep 2026 20:28:41 +0900 Message-ID: <20260930112842.21323-6-sigefriedhyy@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260930112842.21323-1-sigefriedhyy@gmail.com> References: <20260930112842.21323-1-sigefriedhyy@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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 Reviewed-by: Nicolas Dichtel --- Documentation/netlink/specs/rt-addr.yaml | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) diff --git a/Documentation/netlink/specs/rt-addr.yaml b/Documentation/netlink/specs/rt-addr.yaml index 17ead22034515..1bd1184d1e202 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 +170,16 @@ 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. For AF_PACKET + a non-zero ifa-index restricts the dump to that device and + ifa-prefixlen, ifa-flags and ifa-scope must be zero, AF_INET and + AF_INET6 apply this with NETLINK_GET_STRICT_CHK only. attribute-set: addr-attrs fixed-header: ifaddrmsg do: @@ -181,10 +192,13 @@ operations: - multicast - mc-users - cacheinfo + - flags + - target-netnsid dump: request: value: 58 - attributes: [] + attributes: + - target-netnsid reply: value: 58 attributes: *mcaddr-attrs -- 2.43.0