From patchwork Mon Oct 14 20:55:40 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kuniyuki Iwashima X-Patchwork-Id: 13835475 Received: from smtp-fw-33001.amazon.com (smtp-fw-33001.amazon.com [207.171.190.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 18DF726296 for ; Mon, 14 Oct 2024 20:55:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=207.171.190.10 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728939358; cv=none; b=JXs12KFIOv6PK/xWbIC29NaBCtikTQqx7GZPTAf1YmsWwuZC5mgZG3yiPOKvQ265oy2jhvJkfAoyvzTar8XLGY52PDgFKJNNNM0UPbeufM7gX7tMKm7riXaB45m91wMnhRxhZHyQHHf/gYPlLz0v6C1csMAIJs5vNM04159y+ok= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728939358; c=relaxed/simple; bh=iJ7RFNChVuYPtkKskakOBJCFDqv5YnhM2b13fPP3Gso=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=t3OswXUmjCD6U0bRuHhbL46O69PGYW8MK4XXKMs1J2DTJbdv50UB2vjQgQ6x8CP8APw8ncX7/7PVYSD7sBqY4qR0+mg8067q9HB728goC42WMdUrprJYw3VZBee5yffdjHFC/uMhPnUpEeiJoxnq0H8mOi7KjoA1OppD26dcrKA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amazon.com; spf=pass smtp.mailfrom=amazon.co.jp; dkim=pass (1024-bit key) header.d=amazon.com header.i=@amazon.com header.b=SYajZ/Dk; arc=none smtp.client-ip=207.171.190.10 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amazon.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=amazon.co.jp Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=amazon.com header.i=@amazon.com header.b="SYajZ/Dk" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1728939357; x=1760475357; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=p47nYekNtMblN9yW6GABV9HnQUZlc4cvZt37e91UI/s=; b=SYajZ/Dk2e3HIXzlZAD33DpK/aNSnZ/b1ip/L+SPFmeKZwQgZgW9z1IY S/tKwUOlbLXAo2VtvRlnVBiPXqaPeB1DoVTlVx5k0J6qLFGvQZ0OpdMB6 e6/Ti/9/VFnBaaHAu1KStSjlfl09TEGqN860HHGKqY8TVF9HIDhJApJob k=; X-IronPort-AV: E=Sophos;i="6.11,203,1725321600"; d="scan'208";a="376090981" Received: from pdx4-co-svc-p1-lb2-vlan2.amazon.com (HELO smtpout.prod.us-west-2.prod.farcaster.email.amazon.dev) ([10.25.36.210]) by smtp-border-fw-33001.sea14.amazon.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Oct 2024 20:55:51 +0000 Received: from EX19MTAUWB001.ant.amazon.com [10.0.38.20:57057] by smtpin.naws.us-west-2.prod.farcaster.email.amazon.dev [10.0.38.26:2525] with esmtp (Farcaster) id 8251efab-5c24-4362-ae25-93591d912438; Mon, 14 Oct 2024 20:55:51 +0000 (UTC) X-Farcaster-Flow-ID: 8251efab-5c24-4362-ae25-93591d912438 Received: from EX19D004ANA001.ant.amazon.com (10.37.240.138) by EX19MTAUWB001.ant.amazon.com (10.250.64.248) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA) id 15.2.1258.34; Mon, 14 Oct 2024 20:55:49 +0000 Received: from 6c7e67c6786f.amazon.com (10.106.101.44) by EX19D004ANA001.ant.amazon.com (10.37.240.138) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA) id 15.2.1258.35; Mon, 14 Oct 2024 20:55:47 +0000 From: Kuniyuki Iwashima To: Johannes Berg CC: Alexandre Ferrieux , Kuniyuki Iwashima , Kuniyuki Iwashima , Subject: [PATCH v1 wl-next 0/3] wifi: wext: Namespacify wireless_nlevent_flush() calls. Date: Mon, 14 Oct 2024 13:55:40 -0700 Message-ID: <20241014205543.94787-1-kuniyu@amazon.com> X-Mailer: git-send-email 2.39.5 (Apple Git-154) Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: EX19D045UWC001.ant.amazon.com (10.13.139.223) To EX19D004ANA001.ant.amazon.com (10.37.240.138) Currently, wext's netdev notifier calls wireless_nlevent_flush() for any event of any device and iterates all netns. It happens even on a host without wext devices and is problematic if the host has thousands of netns & devices as reported in the thread below. [0] This series will address the issue by removing the netns iteration in wireless_nlevent_flush(). [0]: https://lore.kernel.org/netdev/CAKYWH0Ti3=4GeeuVyWKJ9LyTuRnf3Wy9GKg4Jb7tdeaT39qADA@mail.gmail.com/ Kuniyuki Iwashima (3): wifi: wext: Move wext_nlevents to net->gen[]. wifi: wext: Convert wireless_nlevent_work to per-netns work. wifi: wext: Don't iterate all netns in wireless_nlevent_flush(). include/net/iw_handler.h | 4 +-- include/net/net_namespace.h | 3 -- net/wireless/core.c | 2 +- net/wireless/wext-core.c | 69 +++++++++++++++++++++++++------------ 4 files changed, 50 insertions(+), 28 deletions(-)