From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pg1-f201.google.com (mail-pg1-f201.google.com [209.85.215.201]) (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 599E5169AD2 for ; Mon, 9 Mar 2026 18:08:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773079702; cv=none; b=D1ZzCutcGgkvqIFyzidg63KdZ6DaQgIoC88KYHIqVOm9QlxSBI5+I+dA1shBjiiD+bhf3eYNzEKX1rjLi3IjAYrJwxh38LVYmInw/IdpTTdC4n5+7fpwCky0fL9QsYQvR2wwLtoQPLJl6Twg6lHhMJc65MMVUPkn2lYQokR1XoA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773079702; c=relaxed/simple; bh=pHXO8GZNKzWHHjS11uVUoeVDBKj6DMaEjf7vf7shg1k=; h=Date:Mime-Version:Message-ID:Subject:From:To:Cc:Content-Type; b=DbKCFWus/gi8KMCvec/av5YomCY8wT5keqaG5ih+b3uu3UDmU4J8fjA/zrMgb7YGDNnCaK4ljbn9ipfaDBsFIk/LariaKIvbx2U1/Hvcl8eaTMxymdSiXgcGbDEbgARqSZm9luJnZGue4lpvlCH31vX1jf9W9eVBvjZOAHX7/AY= 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=aYkwAkM5; arc=none smtp.client-ip=209.85.215.201 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="aYkwAkM5" Received: by mail-pg1-f201.google.com with SMTP id 41be03b00d2f7-b630753cc38so54000986a12.1 for ; Mon, 09 Mar 2026 11:08:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1773079701; x=1773684501; darn=vger.kernel.org; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=SSvyxLEWYpsT1FmHWkL0pWV32hlYY8paSDx6+V25IME=; b=aYkwAkM5+Nx5iMhDrmprZTN76uaMogt3prRW6w4YHgpxhxafIlpVm69utC8DUf3RY6 bxC2gSA7uYPOq9gjin1d6UaO98leAW5nUTKNXzCGTT8CNMEdGNdAbzlp6pFuAg4pJRjZ M4V1wQ0q6NLNR3zpwNjPygyV/7njf0JQ7X+zSv2qj6UBJVV7HugTpKjq/p9SYCgSgcMZ cgbCQtQIG4a12M5NjjS27N7hZFHaAtBGhdpfObbUSXHTA9JHAlokxEQH1UYfSIxWfXzu 3GbOaxetg+2NfQcqfdPaSmTefH4riBp8cj/krPkBRmAbbB5eQ3NyFu/YNaZKb7ojYyfx Ctpg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1773079701; x=1773684501; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=SSvyxLEWYpsT1FmHWkL0pWV32hlYY8paSDx6+V25IME=; b=MjVT2uMzMECnUGCSPhFMKfXz6Nk4VzEU4wtSRn834mLSR9PsXEytLOSqAI6Ps3hPf+ aUGkLbEMV5ss5VHZKeOcuZz7eN+uwN795RL1mvJPnFl7tjzJpEGpF1/xXKEm4iJLsY5/ 0BBKU7JoljUO/lgkq1jOnfxRYSqesy9F4GzQSLTMqSsGC8GNQsxo8arfCp3YlCtCWnT3 mELUIGgT8CPijEmLTk7ERgPEWQ3QvO+wQIDLOS33f/0FkqCLxYKiBTA5tgg665mXGlRj +CVlzQ43vxVRHK0tSZsx1AbHs2gbwBsTqfOSqJ2CwfVv+wYBQkuY2Hk3ECiBGUUgvjLC 8sGw== X-Forwarded-Encrypted: i=1; AJvYcCVbLXvrvDGQqIhv4aVfs1cvPRcEJUV4QjQ7/SEMUnO93A4Xala6BbN4ooi54/i2yHs2xbI0GbQ=@vger.kernel.org X-Gm-Message-State: AOJu0YzboSYrmQ0tFzf9/dTKh5r0zKFzXEPiXSowZJBT2yL12F+1LkBl vUS9t097Nf/eYoM4aD3d/kojxPCKivn+87yH+i+eMAm2wUnjQ7CilTkoehyFlhLdY9186ROLYsO RBgeTYA== X-Received: from pfbjr8.prod.google.com ([2002:a05:6a00:9148:b0:7f4:e7a0:9b05]) (user=kuniyu job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6a00:4b53:b0:829:8bb4:1030 with SMTP id d2e1a72fcca58-829a2eaa5c1mr11138096b3a.42.1773079700462; Mon, 09 Mar 2026 11:08:20 -0700 (PDT) Date: Mon, 9 Mar 2026 18:06:47 +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 2.53.0.473.g4a7958ca14-goog Message-ID: <20260309180804.3471287-1-kuniyu@google.com> Subject: [PATCH v3 net 0/2] ipv6: Fix two GC issues with permanent routes. From: Kuniyuki Iwashima To: David Ahern , "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: Kui-Feng Lee , Xin Long , Simon Horman , Kuniyuki Iwashima , Kuniyuki Iwashima , netdev@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Patch 1 fixes the unbounded growth of tb6_gc_hlist due to permanent routes whose exception routes have all expired. Patch 2 fixes an issue where exception routes tied to permanent routes are not properly aged. Changes: v3: Patch 2: Use IS_ENABLED() v2: https://lore.kernel.org/netdev/20260308032304.1841198-1-kuniyu@google.com/ Patch 2: Fix build failure when CONFIG_IPV6=n (no net->ipv6 definition) v1: https://lore.kernel.org/netdev/20260307024709.718395-1-kuniyu@google.com/ Kuniyuki Iwashima (2): ipv6: Remove permanent routes from tb6_gc_hlist when all exceptions expire. ipv6: Don't remove permanent routes with exceptions from tb6_gc_hlist. include/net/ip6_fib.h | 19 ++++++++++++++++++- net/ipv6/addrconf.c | 4 ++-- net/ipv6/ip6_fib.c | 15 +++++++++++++-- net/ipv6/route.c | 2 +- 4 files changed, 34 insertions(+), 6 deletions(-) -- 2.53.0.473.g4a7958ca14-goog