From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj1-f73.google.com (mail-pj1-f73.google.com [209.85.216.73]) (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 7CB24235C01 for ; Thu, 4 Jun 2026 22:47:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.73 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780613236; cv=none; b=KyXo6S7v4SKlz7WHm7nDRk3afe4/JCB0gdX+4odgZhBx2EFCTEy9OTYJgL16JXtmhswJFaPo7lBi5r292W2XBIf31vS2ACYH+iqupiLxrmHNnxo0lZu0hCgyuTA+8AKrSpvy7u4DtuChuXH+ek8AZPoztqx6QrypOilpK/CfU48= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780613236; c=relaxed/simple; bh=nGHxuSLaj5PZagx+diw2C0PVZD+D6jDeG21FiEyfYUg=; h=Date:Mime-Version:Message-ID:Subject:From:To:Cc:Content-Type; b=C55ZKKlJA54/rITOfKGrLcxBO6zA04SW9mdfd1dNmwPPNANCwk+FvdY2G20S/5cnCV+pinu9mLCNWN7YXdxd0gIIKndv8mCrm1pkGyhKYRkt1yYHPZjs7h2yvkdsGRiQTIDf0pWhcClEuLcCTghKarMw7b7ElcHJ3413SNIUYww= 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=EsMFVQcW; arc=none smtp.client-ip=209.85.216.73 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="EsMFVQcW" Received: by mail-pj1-f73.google.com with SMTP id 98e67ed59e1d1-36d6389bbf4so1134913a91.3 for ; Thu, 04 Jun 2026 15:47:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1780613235; x=1781218035; darn=vger.kernel.org; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=UJiWu+o71oPNLE5PyJyZFCP865ju6FGM/GBubt1te5Q=; b=EsMFVQcWPLHJv+jUDs97rsPPa0HUiuBtCB7LiVLF/oMgc84qlPy52cLwbMS57WGA9K CKu6aNG8aeTbXHOh+5Lt8VOxzTtUJuwAGEnmWo5Jhi6cGHS3ZZuxb9vEqIk8wDGYaVJd /Eou3r5LJ7jEI88lf+jpbtQwK2iyhCe/6RUG8uJib0uYI/mdjwHK3Lnz12ik61l3ecPA AW0wyHlUmRIlvctYpOrFJBMEh644SMaQB58VhwFUsV681fMfqE+isjlCEGnx2sZAy1Bq 1/AzSvNl343RS5xgEF7jJfrrRcmlXUmzvVdLy8QxUssn4dI0N2FvY1UvVlUvnCBhi2+D vNIw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1780613235; x=1781218035; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=UJiWu+o71oPNLE5PyJyZFCP865ju6FGM/GBubt1te5Q=; b=rGy767IFSwT9n/SfyKhPAKpm5d/YQ7QtKzWCvCJqur1yxJwLkDz7JsW3dk02xG045K UK6gDZpf5yHGpzf0zRwDbgNxJwuPaVlSfP0pckWvxZkLANYbeGly1/zkIBf6Gad3RJmm KlLsqmVHSOBg/M9t2umQctXcQUrPVOKT/A77CXtKV3P/pbxUoFXofwzrrMlc2h2laDk0 Itf4E+tTlOrsTMfZwZUWMwPhXdXa3GccyhwGR9hK5Tdkfzj/d7BFgdRP/eVABWDpojVc Zgk32k1cZGizjKKIUHiwIWOOE1eTPvgyD21NOpTz20xJQNBUWmHw/cfkl1FCap8fTQ/i /Vgw== X-Forwarded-Encrypted: i=1; AFNElJ+mrT7smmpuqqTJHY5lmVlg0FB540EeiX33U/QQgWB3aMBcOa6sfvwYuaRXmOV0S9JNk7Wsaeg=@vger.kernel.org X-Gm-Message-State: AOJu0Yzf7vXViCBeHz2Da/9Mf3JrFfumtYAUq6eEi7JjuDUCaCr+6Nbm eLefiSy9lP7KveMKzG6oZIjMAeZ05SwHNgAK4m73pi7uE107WljQ5Rz6cNyvETBITp4PkjtE3Z3 xl54IOg== X-Received: from pjyf13.prod.google.com ([2002:a17:90a:ec8d:b0:369:3e28:9233]) (user=kuniyu job=prod-delivery.src-stubby-dispatcher) by 2002:a17:90a:d606:b0:36d:ee3b:fcae with SMTP id 98e67ed59e1d1-370ee447899mr824245a91.6.1780613234513; Thu, 04 Jun 2026 15:47:14 -0700 (PDT) Date: Thu, 4 Jun 2026 22:46:18 +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 2.54.0.1032.g2f8565e1d1-goog Message-ID: <20260604224712.3209821-1-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 , Ido Schimmel , 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/ip6mr.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 - 6 converts RTM_GETROUTE handlers to RCU. Patch 7 removes struct fib_dump_filter.rtnl_held. Patch 8 use RCU for mr_table for CONFIG_IPV6_MROUTE_MULTIPLE_TABLES=n for ->exit_rtnl(). Patch 9 move fib_rules_unregister() to ->exit() Patch 10 - 12 converts ->exit_batch() to ->exit_rtnl() to save one RTNL in cleanup_net(). Patch 13 removes unnecessary RTNL during setup_net() failure. Patch 14 drops RTNL for MRT6_(ADD|DEL)_MFC(_PROXY)?. Patch 15 misc clean up Changes: v3: Patch 1 : Use XFAIL_ADD() v2: https://lore.kernel.org/netdev/20260410211726.1668756-1-kuniyu@google.com/ Add patch 8 & 9 for ->exit_rtnl() conversion and drop 2 trivial patches (patch 2 & 14 in v1) v1: https://lore.kernel.org/netdev/20260407212001.2368593-1-kuniyu@google.com/ Kuniyuki Iwashima (15): selftest: net: Extend ipmr.c for IP6MR. 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: Free mr_table after RCU grace period. ip6mr: Call fib_rules_unregister() without RTNL. 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: Replace RTNL with a dedicated mutex for MFC. ip6mr: Define net->ipv6.{ip6mr_notifier_ops,ipmr_seq} under CONFIG_IPV6_MROUTE. include/net/ip_fib.h | 1 - include/net/netns/ipv6.h | 5 +- net/ipv4/fib_frontend.c | 19 +- net/ipv4/ipmr.c | 4 +- net/ipv6/ip6_fib.c | 1 - net/ipv6/ip6mr.c | 299 +++++++++++------- net/mpls/af_mpls.c | 6 +- tools/testing/selftests/net/forwarding/ipmr.c | 189 +++++++---- 8 files changed, 312 insertions(+), 212 deletions(-) -- 2.54.0.1032.g2f8565e1d1-goog