From: Paolo Abeni <pabeni@redhat.com>
To: Yuyang Huang <sigefriedhyy@gmail.com>
Cc: "David S. Miller" <davem@davemloft.net>,
Andrew Lunn <andrew+netdev@lunn.ch>,
David Ahern <dsahern@kernel.org>,
Donald Hunter <donald.hunter@gmail.com>,
Eric Dumazet <edumazet@google.com>,
Ido Schimmel <idosch@nvidia.com>,
Jakub Kicinski <kuba@kernel.org>, Shuah Khan <shuah@kernel.org>,
Simon Horman <horms@kernel.org>,
linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org,
netdev@vger.kernel.org
Subject: Re: [PATCH net-next 0/3] net: report multicast group user count
Date: Fri, 3 Jul 2026 08:50:23 +0200 [thread overview]
Message-ID: <2a0033b6-9a54-4de3-b1a8-78d4bc815f56@redhat.com> (raw)
In-Reply-To: <20260630110207.37841-1-sigefriedhyy@gmail.com>
On 6/30/26 1:02 PM, Yuyang Huang wrote:
> RTM_GETMULTICAST reports IPv4 and IPv6 multicast group membership, but
> does not include the per-group user count. Userspace therefore still has
> to parse /proc/net/igmp and /proc/net/igmp6 to obtain the Users column.
> In particular, this prevents iproute2 from moving "ip maddr show"
> entirely from procfs to rtnetlink.
>
> Add IFA_MC_USERS to carry the user count in RTM_GETMULTICAST dumps and
> RTM_NEWMULTICAST / RTM_DELMULTICAST notifications for both address
> families. Update the rt-addr YNL specification and extend the rtnetlink
> selftest to verify that two joins increase the reported count by two.
Will you take care of implementing the iproute2 bits, too?
Thanks,
Paolo
next prev parent reply other threads:[~2026-07-03 6:50 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-30 11:02 [PATCH net-next 0/3] net: report multicast group user count Yuyang Huang
2026-06-30 11:02 ` [PATCH net-next 1/3] net: ipv4: " Yuyang Huang
2026-07-01 20:54 ` Vadim Fedorenko
2026-07-02 8:11 ` Ido Schimmel
2026-06-30 11:02 ` [PATCH net-next 2/3] net: ipv6: " Yuyang Huang
2026-07-01 20:55 ` Vadim Fedorenko
2026-07-02 8:12 ` Ido Schimmel
2026-06-30 11:02 ` [PATCH net-next 3/3] selftests: net: check " Yuyang Huang
2026-07-01 20:55 ` Vadim Fedorenko
2026-07-03 6:50 ` Paolo Abeni [this message]
2026-07-03 6:52 ` [PATCH net-next 0/3] net: report " Yuyang Huang
2026-07-03 7:00 ` patchwork-bot+netdevbpf
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