From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-yw1-f201.google.com (mail-yw1-f201.google.com [209.85.128.201]) (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 E56D333F595 for ; Tue, 28 Apr 2026 17:04:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777395858; cv=none; b=GauUQzW6gL5rBA1wdzgKPhmKzsalLos1AUqgwPZJU+4nO92szxkgWSGzSjHlzU64WxRNg2U2iOrxZ/sIXScf4pZydztO9cBATDLTOtp4bGErEQgvfLPgAujwFcxyW0MhcgZrkZke1MTr/UrX+bgPDAzzale8PECkAo6plGZ6dIk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777395858; c=relaxed/simple; bh=pO6stthgR/V4ZXefRDeAnuht+jkmnlnRKLcdFg7WKnY=; h=Date:Mime-Version:Message-ID:Subject:From:To:Cc:Content-Type; b=BDt4Wni9rQ71N9Ig/IV9yMdzknita/fkNtUgInPgc5UGQcDxjP3IVIAgYjOwjlc3P0i+SMF3SrTTEN7T8heO6r8qcHhQWA59g39IKlnvNJ8gnSbF2tFMLz5+n0m8Q4ouqRihM+jYfYRWcM6dq0ZOlGTDNQQiQ4S+YQHT8ERHmLg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--edumazet.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=LYp2jEKE; arc=none smtp.client-ip=209.85.128.201 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--edumazet.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="LYp2jEKE" Received: by mail-yw1-f201.google.com with SMTP id 00721157ae682-79878791ec6so262814107b3.3 for ; Tue, 28 Apr 2026 10:04:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1777395856; x=1778000656; darn=vger.kernel.org; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=3tcICOxMBTI2sSaaw3mWzDuzaXjEAMWkGT7RCWACzuI=; b=LYp2jEKEKo59jx1yticTA25o5v+GtQFOLG5oXrfInlIemkS5hE8rrUQIyNjTaU2Wqx viaOeo483+ZbbU/SmIQ20vGHBKJ87NS6ua8tvfX2uaRkGIbXd1HaKQHt1T8/KstR8L1m 5o/plFhoZ1fwLgLbrUBbRR32eVA+LphoFtrAt0HqewF6Q4IE0OcF9UtRR38+vQVedr0X reXPeHpfqC44sKpRJYS8NKbMGg+70Hwu2KegIobw/clrTfnf1JwjWvNkK5rQ9fnhgz4k 6XmcIr3V0MyReyvA7eT4hTufSb+EOrV1RQcAGqc0GWAUTCwxovgmxt0VCuHxTv6jkFnW 3kUA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1777395856; x=1778000656; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=3tcICOxMBTI2sSaaw3mWzDuzaXjEAMWkGT7RCWACzuI=; b=N73CSYF7jnDy1GSfLpbdj9g74GCWGghv3oEMyRJIZkSqTUQ4M/Nhp50bC67rU24bQJ tQ0wLMaUGb9R+xCP8MaA1zMAKSGxv25LIS7YyMmFgjr7uRzZ1WB4m6uybKJH9omNFf0n FR42A+U/BwuCNF7SZSkymz4+JUNwLOS6xDYS39rjn5qYMQZZmr3aO/wEUXYtluwP+vLP rd4ZZlRo+EPC0LxjauU0t9NdayUtw8aUTG+ScI3c3MQzCUN0h+KVZKAlVF8BAstyxDr1 idMSFrZuL7lBa0q378ABk/GJ1f1QniXenbCn9tjdIS+RTFhkf7J9h4+8FQBWYn8WwHiA PcFg== X-Forwarded-Encrypted: i=1; AFNElJ8cVYtRE9RXoISOr/XFbiJdJyOvqUPvomXcaQt3bRZPGWnzpGNHDg9NusvsLlY7lmIFy+xQPhI=@vger.kernel.org X-Gm-Message-State: AOJu0YxaoLSBw5cutPDwDeVb6wvjBtkpnZrqCA4m4v2W6NdUQsS+X6iR XcUHIRftDJRII0sAaKf4Hhv6WhodAEDbJnRxYgaW6EnBG4n0fVZRDLG1xbfx4TkOl1Spg0gYqaG Fmj8wCWbKb8GdYQ== X-Received: from ywbkd8.prod.google.com ([2002:a05:690c:4f88:b0:7b3:59b0:79d]) (user=edumazet job=prod-delivery.src-stubby-dispatcher) by 2002:a05:690c:c50e:b0:7b3:b0a6:2c5b with SMTP id 00721157ae682-7bcf50e7662mr41690017b3.12.1777395855732; Tue, 28 Apr 2026 10:04:15 -0700 (PDT) Date: Tue, 28 Apr 2026 17:04:10 +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 2.54.0.545.g6539524ca2-goog Message-ID: <20260428170414.250566-1-edumazet@google.com> Subject: [PATCH v2 net-next 0/4] net/sched: tc_dump_qdisc() optimizations From: Eric Dumazet To: "David S . Miller" , Jakub Kicinski , Paolo Abeni Cc: Simon Horman , Jamal Hadi Salim , Jiri Pirko , netdev@vger.kernel.org, eric.dumazet@gmail.com, Eric Dumazet Content-Type: text/plain; charset="UTF-8" Before converting tc_dump_qdisc() to RCU, we make the following changes: - Use for_each_netdev_dump() instead of for_each_netdev() - Only dump qdiscs of a single device at user space request. v2: addressed Jakub feedback (thanks!) Eric Dumazet (4): net/sched: propagate tc_fill_tclass() error net/sched: tc_dump_qdisc_root() refactor net/sched: switch tc_dump_qdisc() to for_each_netdev_dump() net/sched: speedup tc_dump_qdisc() when tcm_ifindex is provided net/sched/sch_api.c | 129 +++++++++++++++++++++++--------------------- 1 file changed, 69 insertions(+), 60 deletions(-) -- 2.54.0.545.g6539524ca2-goog