From patchwork Wed Nov 18 01:33:19 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: wenxu X-Patchwork-Id: 11913757 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-11.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 47BBBC2D0E4 for ; Wed, 18 Nov 2020 01:33:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ECD522220B for ; Wed, 18 Nov 2020 01:33:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727413AbgKRBd1 (ORCPT ); Tue, 17 Nov 2020 20:33:27 -0500 Received: from m9785.mail.qiye.163.com ([220.181.97.85]:43560 "EHLO m9785.mail.qiye.163.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725767AbgKRBd0 (ORCPT ); Tue, 17 Nov 2020 20:33:26 -0500 Received: from localhost.localdomain (unknown [123.59.132.129]) by m9785.mail.qiye.163.com (Hmail) with ESMTPA id 511545C1B49; Wed, 18 Nov 2020 09:33:24 +0800 (CST) From: wenxu@ucloud.cn To: kuba@kernel.org, marcelo.leitner@gmail.com, vladbu@nvidia.com Cc: netdev@vger.kernel.org Subject: [PATCH v2 net-next 0/3] net/sched: fix over mtu packet of defrag in Date: Wed, 18 Nov 2020 09:33:19 +0800 Message-Id: <1605663203-14180-1-git-send-email-wenxu@ucloud.cn> X-Mailer: git-send-email 1.8.3.1 X-HM-Spam-Status: e1kfGhgUHx5ZQUtXWQgYFAkeWUFZS1VLWVdZKFlBSUI3V1ktWUFJV1kPCR oVCBIfWUFZGEgdSx5JSB8aHk4eVkpNS05NTUhJS09PTk5VGRETFhoSFyQUDg9ZV1kWGg8SFR0UWU FZT0tIVUpKS0hKTFVLWQY+ X-HM-Sender-Digest: e1kMHhlZQR0aFwgeV1kSHx4VD1lBWUc6NBg6MAw6NT06UT09DyooTQ4d ORwaCQtVSlVKTUtOTU1ISUtPTU5OVTMWGhIXVQweFQMOOw4YFxQOH1UYFUVZV1kSC1lBWUpJSFVO QlVKSElVSklCWVdZCAFZQUpCSU43Bg++ X-HM-Tid: 0a75d8fc24202087kuqy511545c1b49 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org From: wenxu Currently kernel tc subsystem can do conntrack in act_ct. But when several fragment packets go through the act_ct, function tcf_ct_handle_fragments will defrag the packets to a big one. But the last action will redirect mirred to a device which maybe lead the reassembly big packet over the mtu of target device. The first patch fix miss init the qdisc_skb_cb->mru The send one refactor the hanle of xmit in act_mirred and prepare for the third one The last one add implict packet fragment support to fix the over mtu for defrag in act_ct. There are too much versions, this series repost restart with version v2. wenxu (3): net/sched: fix miss init the mru in qdisc_skb_cb net/sched: act_mirred: refactor the handle of xmit net/sched: sch_frag: add generic packet fragment support. include/net/act_api.h | 8 +++ include/net/sch_generic.h | 5 +- net/core/dev.c | 2 + net/sched/Makefile | 2 +- net/sched/act_api.c | 44 ++++++++++++++ net/sched/act_ct.c | 7 +++ net/sched/act_mirred.c | 21 +++++-- net/sched/sch_frag.c | 150 ++++++++++++++++++++++++++++++++++++++++++++++ 8 files changed, 228 insertions(+), 11 deletions(-) create mode 100644 net/sched/sch_frag.c