From patchwork Thu Nov 19 23:38:33 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: wenxu X-Patchwork-Id: 11919301 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 E91D0C63777 for ; Fri, 20 Nov 2020 00:14:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A8C8322244 for ; Fri, 20 Nov 2020 00:14:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727086AbgKTAOW (ORCPT ); Thu, 19 Nov 2020 19:14:22 -0500 Received: from m9785.mail.qiye.163.com ([220.181.97.85]:22444 "EHLO m9785.mail.qiye.163.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726463AbgKTAOV (ORCPT ); Thu, 19 Nov 2020 19:14:21 -0500 Received: from localhost.localdomain (unknown [123.59.132.129]) by m9785.mail.qiye.163.com (Hmail) with ESMTPA id DEAF05C0F3D; Fri, 20 Nov 2020 07:38:36 +0800 (CST) From: wenxu@ucloud.cn To: kuba@kernel.org, marcelo.leitner@gmail.com, vladbu@nvidia.com, jhs@mojatatu.com, xiyou.wangcong@gmail.com Cc: netdev@vger.kernel.org Subject: [PATCH v3 net-next 0/3] net/sched: fix over mtu packet of defrag in Date: Fri, 20 Nov 2020 07:38:33 +0800 Message-Id: <1605829116-10056-1-git-send-email-wenxu@ucloud.cn> X-Mailer: git-send-email 1.8.3.1 X-HM-Spam-Status: e1kfGhgUHx5ZQUtXWQgYFAkeWUFZS1VLWVdZKFlBSUI3V1ktWUFJV1kPCR oVCBIfWUFZGhpJGEkeTBpNQ0gYVkpNS05DSUJKSk1CTUNVGRETFhoSFyQUDg9ZV1kWGg8SFR0UWU FZT0tIVUpKS0hKTFVLWQY+ X-HM-Sender-Digest: e1kMHhlZQR0aFwgeV1kSHx4VD1lBWUc6Nxg6Pww6Hz03KjMJFi0MHTIj EksaCjNVSlVKTUtOQ0lCSkpMSkpDVTMWGhIXVQweFQMOOw4YFxQOH1UYFUVZV1kSC1lBWUpJSFVO QlVKSElVSklCWVdZCAFZQUpCT0s3Bg++ X-HM-Tid: 0a75e2dfc4152087kuqydeaf05c0f3d 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. 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 | 1 + 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(+), 10 deletions(-) create mode 100644 net/sched/sch_frag.c Acked-by: Cong Wang Acked-by: Jamal Hadi Salim