From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pf1-f202.google.com (mail-pf1-f202.google.com [209.85.210.202]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 07D88253F05 for ; Tue, 7 Apr 2026 21:20:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.202 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775596806; cv=none; b=HmvDucM6zTQgOQAWl9fs63ZpR1GOSq02pVJwlPeMVsMMBxV5j9jrxwap/XQLU2kSusX0ukPK5kDHys97R9Um1T+mhnoS16Akxas2vv0wMDHtNdyx1IfcH+VN9UwqzDT6Z5vp5GM53Em0CC3rmnaseTTN745F9eiOO2UqLv/jAIE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775596806; c=relaxed/simple; bh=OV84db14e02xsWwKu3XDB2umeRHlpxXKWOb25CGuETs=; h=Date:Mime-Version:Message-ID:Subject:From:To:Cc:Content-Type; b=STJ9tZK+qglc6ydE9RUZbELEIsrp4Cou+oP+IFxKlukVNLE+RbzmF70eYk5cToUv5vr6jAwGJpiTJsl2tYf4+6Fy4lUT2FWsTKY8NVPnpZ00xnThidMe2H4DMLIU+qwPP6m7iG2aVVGIN8Hm/4kkwVBKMRGgQLSmqcjXwL3fI3s= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--kuniyu.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=KOTvSu2J; arc=none smtp.client-ip=209.85.210.202 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--kuniyu.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="KOTvSu2J" Received: by mail-pf1-f202.google.com with SMTP id d2e1a72fcca58-82c649dc145so3345087b3a.3 for ; Tue, 07 Apr 2026 14:20:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1775596804; x=1776201604; darn=vger.kernel.org; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=13/e8QRKJhxkHlopxevZBlaQoBeQhrJbh0a8w86ccsM=; b=KOTvSu2JzHlxQ8aKatDpsLx+fIJ/+5dJwLXF68UnG4EiSQns4gu73xeJ8XClM9RsQE giRe703n1Q9naDvf/aWppknJPGOU+YfG6dPIWhAqRVBC1YF6T4ElCHzWL3ovSKrbOpQG ogXyHiCs1CITzeaWaavvo7DuuX64DpoTE6dpUrDkErku2SEvkKWdUB7Pr9JLRsUqmfAx EKuzSLew0mus3RQJx+GEMwt3egsiL6h3fk1oBk/3vGwKqOZ04V+xOMpa0GTbyag/N60n 1H0hipJozxMlaL0kJzWZyW+pEtGcrANLlWM4fTS2td7yEAIXXWpcGN0RAjrr5Uxaufr+ haLA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1775596804; x=1776201604; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=13/e8QRKJhxkHlopxevZBlaQoBeQhrJbh0a8w86ccsM=; b=VwpOQ7W8OBENB1SIg2Fr/Mm9g2RNcteDwBEmkV5zmic3uMBzC0HijqfzhlMvh9n2jd u1JbiunGhbsePW8yjKd5S6cduipGFkrxi9EeFM7BGob+qh5GdWsia7uR4wzyo3tRGBaY NkWY+8OkO3C9qf5goI5P0ud3gmg0bNmcckXiX+tXD2kjLeD0WNzrc+zzhVgq7oM5EJb6 oFD22tQVjI21jYxuubMbj7FH/kZIfORyuweNGMLreQaPQMLxo3U32LUT3GDJWCjxZbyl 7HUYCYlGezpWeEobWLx5JTdM+c9EouxoBH4XlY9LGakan8ijYbdBPpRuvBr6tZEKydht O2HQ== X-Forwarded-Encrypted: i=1; AJvYcCWuSqBv55uVZHLgJ3Kjjcp/q/kY+/O7zh3vYjUPq+kAYyRvA53fNmiG8yhedTZ2thSBL+bcsx4=@vger.kernel.org X-Gm-Message-State: AOJu0YzeX4637ZqACYuzNgf2/KtuGVKLKikFoLNntp/FhIQ3FTOjR7or 5sYDNca6EGDcxxcDJLgWTI6SVuYpTlLjFM2Ew2/kEehrEDNU6HLQu4nlM16L3X4A1uQLJR2XfU8 F4ogNdg== X-Received: from pfbfb9.prod.google.com ([2002:a05:6a00:2d89:b0:829:7ce4:7fcc]) (user=kuniyu job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6a00:14ca:b0:81f:3eda:9d69 with SMTP id d2e1a72fcca58-82d0da99cfemr18011041b3a.22.1775596803804; Tue, 07 Apr 2026 14:20:03 -0700 (PDT) Date: Tue, 7 Apr 2026 21:19:33 +0000 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 X-Mailer: git-send-email 2.53.0.1213.gd9a14994de-goog Message-ID: <20260407212001.2368593-1-kuniyu@google.com> Subject: [PATCH v3 net-next 00/15] ip6mr: No RTNL for RTNL_FAMILY_IP6MR rtnetlink. From: Kuniyuki Iwashima To: "David S . Miller" , David Ahern , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: Simon Horman , Kuniyuki Iwashima , Kuniyuki Iwashima , netdev@vger.kernel.org Content-Type: text/plain; charset="UTF-8" This series is the IPv6 version of https://lore.kernel.org/netdev/20260228221800.1082070-1-kuniyu@google.com/ and removes RTNL from ip6mr rtnetlink handlers. After this series, there are a few RTNL left in net/ipv6/ipmr.c and such users will be converted to per-netns RTNL in another series. Patch 1 extends the ipmr selftest to exercise most of the RTNL paths in net/ipv6/ipmr.c Patch 2 is misc cleanup. Patch 3 - 7 converts RTM_GETROUTE handlers to RCU. Patch 8 removes struct fib_dump_filter.rtnl_held. Patch 9 - 11 converts ->exit_batch() to ->exit_rtnl() to save one RTNL in cleanup_net(). Patch 12 - 13 removes unnecessary RTNL during setup_net() failure. Patch 14 is cleanup. Patch 15 drops RTNL for MRT6_(ADD|DEL)_MFC(_PROXY)?. Kuniyuki Iwashima (15): selftest: net: Extend ipmr.c for IP6MR. ipmr: Convert mr_table.cache_resolve_queue_len to u32. ip6mr: Annotate access to mrt->mroute_do_{pim,assert,wrvifwhole}. ip6mr: Use MAXMIFS in mr6_msgsize(). ip6mr: Allocate skb earlier in ip6mr_rtm_getroute(). ip6mr: Convert ip6mr_rtm_getroute() to RCU. ip6mr: Convert ip6mr_rtm_dumproute() to RCU. net: Remove rtnl_held of struct fib_dump_filter. ip6mr: Move unregister_netdevice_many() out of mroute_clean_tables(). ip6mr: Move unregister_netdevice_many() out of ip6mr_free_table(). ip6mr: Convert ip6mr_net_exit_batch() to ->exit_rtnl(). ip6mr: Remove RTNL in ip6mr_rules_init() and ip6mr_net_init(). ip6mr: Call fib_rules_unregister() without RTNL. ip6mr: Define net->ipv6.{ip6mr_notifier_ops,ipmr_seq} under CONFIG_IP_MROUTE. ip6mr: Replace RTNL with a dedicated mutex for MFC. include/linux/mroute_base.h | 2 +- include/net/ip_fib.h | 1 - include/net/netns/ipv6.h | 5 +- net/ipv4/fib_frontend.c | 19 +- net/ipv4/ipmr.c | 22 +- net/ipv6/ip6_fib.c | 1 - net/ipv6/ip6mr.c | 195 +++++++++++------- net/mpls/af_mpls.c | 6 +- tools/testing/selftests/net/forwarding/ipmr.c | 163 ++++++++++----- 9 files changed, 252 insertions(+), 162 deletions(-) -- 2.53.0.1213.gd9a14994de-goog