From mboxrd@z Thu Jan 1 00:00:00 1970 From: Cong Wang Subject: [Patch net-next v2 0/3] net_sched: reflect tx_queue_len change for pfifo_fast Date: Tue, 23 Jan 2018 10:18:56 -0800 Message-ID: <20180123181859.18583-1-xiyou.wangcong@gmail.com> Cc: john.fastabend@gmail.com, Cong Wang To: netdev@vger.kernel.org Return-path: Received: from mail-pf0-f193.google.com ([209.85.192.193]:43551 "EHLO mail-pf0-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751681AbeAWSTH (ORCPT ); Tue, 23 Jan 2018 13:19:07 -0500 Received: by mail-pf0-f193.google.com with SMTP id y26so946352pfi.10 for ; Tue, 23 Jan 2018 10:19:07 -0800 (PST) Sender: netdev-owner@vger.kernel.org List-ID: This pathcset restores the pfifo_fast qdisc behavior of dropping packets based on latest dev->tx_queue_len. Patch 1 introduces a helper, patch 2 introduces a new Qdisc ops which is called when we modify tx_queue_len, patch 3 implements this ops for pfifo_fast. Please see each patch for details. --- v2: handle error case for ->change_tx_queue_len() Cong Wang (3): net: introduce helper dev_change_tx_queue_len() net_sched: plug in qdisc ops change_tx_queue_len net_sched: implement ->change_tx_queue_len() for pfifo_fast include/linux/netdevice.h | 1 + include/net/sch_generic.h | 2 ++ net/core/dev.c | 29 +++++++++++++++++++++++++++ net/core/net-sysfs.c | 25 +----------------------- net/core/rtnetlink.c | 18 +++++------------ net/sched/sch_generic.c | 50 +++++++++++++++++++++++++++++++++++++++++++++++ 6 files changed, 88 insertions(+), 37 deletions(-) -- 2.13.0